WO2023036318A1

WO2023036318A1 - Anti-freeze valve

Info

Publication number: WO2023036318A1
Application number: PCT/CN2022/118248
Authority: WO
Inventors: 康志军; 俞舟
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-09-10
Filing date: 2022-09-09
Publication date: 2023-03-16
Also published as: KR20240046802A; DE112022004343T5; JP2024531540A

Abstract

Provided in the present application is an anti-freeze valve, comprising: a valve seat having a valve cavity and a valve port, a side wall of the valve cavity having a limiting surface; a valve core movably arranged in the valve cavity to close or open the valve port; a temperature bulb movably arranged in the valve cavity, one end of the temperature bulb cooperating with the valve core, the temperature bulb having a stopping surface in stopping fit with the limiting surface, and included angles being formed between the stopping surface and the moving direction of the temperature bulb and between the limiting surface and the moving direction of the temperature bulb; a first channel arranged between a side wall of the temperature bulb and a side wall of the valve seat; and a second channel arranged between the limiting surface and the stopping surface and communicating with the first channel. When the valve port is opened, the second channel communicates with the valve port. When in use, a fluid flows in from one end of the valve seat far away from the valve port and sequentially enters the first channel and the second channel, and when the valve port is opened, the second channel communicates with the valve port, so that the fluid can flow out from the valve port. Through the technical solution provided by the present application, the problems in the prior art that the anti-freeze valve has a complex structure and is difficult to process can be solved.

Description

antifreeze valve

technical field

The present application relates to the technical field of valves, in particular to an antifreeze valve.

Background technique

The antifreeze valve is used to open the valve when the external ambient temperature is low to discharge the fluid in the heat exchange system and prevent the fluid from freezing and damaging the equipment. An antifreeze valve usually includes a valve core, a valve seat, and a temperature bulb. When the temperature changes, the length of the temperature bulb can be extended or shortened, so that the valve core that cooperates with the temperature bulb moves to open or close the valve port.

The antifreeze valve is provided with a circulation channel for fluid flow. In the prior art, the circulation channel of the antifreeze valve is relatively complicated, resulting in difficult processing and high cost.

application content

The present application provides an antifreeze valve to solve the problems in the prior art that the antifreeze valve has a complex structure and is difficult to process.

In order to solve the above problems, the application provides an antifreeze valve, including: a valve seat, the valve seat has a valve cavity and a valve port, the side wall of the valve cavity has a limit surface; the valve core is movably arranged in the valve cavity, and Close or open the valve port; the temperature bulb is movably arranged in the valve cavity, one end of the temperature bulb is matched with the valve core, the temperature bulb has a stop surface, the stop surface and the limit surface stop fit, the stop surface and the limit surface There is an included angle between the position plane and the moving direction of the temperature bulb; the first channel is set between the side wall of the temperature bulb and the side wall of the valve seat; the second channel is set between the limit surface and the stop surface , the second channel communicates with the first channel; wherein, when the valve port is open, the second channel communicates with the valve port.

Further, there is a groove on the limit surface or the stop surface, and the groove forms the second channel.

Further, the valve cavity includes a first valve hole and a second valve hole that communicate with each other, the diameter of the first valve hole is larger than the diameter of the second valve hole, and the connection between the first valve hole and the second valve hole has a limiting surface; The temperature bulb includes a guide shaft, a limit shaft and a drive shaft connected in sequence. The radial dimension of the limit shaft is larger than that of the guide shaft and the drive shaft. The guide shaft and the limit shaft are arranged in the first valve hole, and the drive shaft The valve core is arranged in the second valve hole, the limit shaft has a stop surface, and the first channel is located between the side wall of the limit shaft and the inner wall of the first valve hole.

Further, the limiting shaft is cylindrical, the side wall of the limiting shaft is in clearance fit with the inner wall of the first valve hole, and the gap between the side wall of the limiting shaft and the inner wall of the first valve hole forms a first channel.

Further, the value of the gap between the side wall of the limiting shaft and the inner wall of the first valve hole is greater than or equal to 0.1mm.

Further, the side wall of the limiting shaft has a first notch, and the first notch forms a first channel.

Further, the antifreeze valve also includes a third channel, the third channel is located between the side wall of the valve core and the side wall of the valve cavity, and the third channel communicates with the second channel; wherein, when the valve port is open, the third channel connected to the valve port.

Further, the valve core includes a stop shaft and a core shaft connected to each other, the radial dimension of the stop shaft is larger than the radial dimension of the core shaft, and the core shaft is used to close or open the valve port; the antifreeze valve also includes a drive spring, the drive spring Sleeved on the mandrel, one end of the drive spring abuts against the end face of the stopper shaft, and the other end of the drive spring abuts against the bottom wall of the valve chamber; the third channel includes a first sub-channel and a second sub-channel that communicate with each other , the first sub-channel is located between the side wall of the stopper shaft and the side wall of the valve cavity, and the second sub-channel is located between the side wall of the core shaft and the side wall of the valve cavity.

Further, the side wall of the stop shaft has a second notch, and the second notch forms the first sub-channel.

Further, the antifreeze valve also includes: an elastic member, which is sleeved on the temperature bulb, and one end of the elastic member close to the valve port abuts against the stepped surface of the temperature bulb, and the end of the valve seat away from the valve port has a necking structure, and the necking structure and The end of the elastic member away from the valve port abuts, the opening of the constriction structure communicates with the valve cavity, and there is a gap for fluid to pass between the elastic member and the outer wall of the temperature bulb.

Further, the valve port has a tapered first sealing surface; the valve core has an annular groove, a tapered second sealing surface and a tapered guide surface, the annular groove is located between the second sealing surface and the guide surface, and the guide surface The diameter A of the large end is smaller than the diameter G of the small end of the second sealing surface, and the second sealing surface is used for limited cooperation with the first sealing surface; the antifreeze valve also includes a sealing ring, which is set in the annular groove and the valve port is closed Next, the sealing ring abuts against the first sealing surface.

Further, the valve port also has a cylindrical surface, the cavity formed around the cylindrical surface communicates with the cavity formed around the first sealing surface, and the diameter A of the large end of the guide surface is smaller than the diameter B of the cylindrical surface; wherein, when the valve port is closed Next, the guide surface extends into the cylindrical surface.

Further, the valve core also has a cylindrical transition surface, the transition surface is located between the guide surface and the annular groove, and the diameter of the transition surface is equal to the diameter A of the large end of the guide surface; wherein, when the valve port is closed, the transition surface extends into inside the cylinder.

Further, the cone angles of the first sealing surface and the second sealing surface are the same, and when the valve port is closed, the second sealing surface is in contact with the first sealing surface.

Further, the sealing ring is made of elastic material. When the valve port is open, the outer diameter E of the sealing ring is larger than the diameter B of the small end of the first sealing surface and smaller than the diameter F of the large end of the first sealing surface.

Further, the diameter G of the small end of the second sealing surface is larger than the diameter B of the small end of the first sealing surface and smaller than the diameter F of the large end of the first sealing surface; the diameter C of the small end of the guide surface is smaller than the inner diameter D of the sealing ring.

Further, the antifreeze valve also includes: a guide sleeve, which is sleeved on the temperature bulb, and one end of the guide sleeve close to the valve port is in contact with the temperature bulb; Sleeve or warm pack abutment.

Further, the guide sleeve includes a sleeve body and a limit ring arranged at one end of the sleeve body, the outer diameter of the limit ring is larger than the outer diameter of the sleeve body, and one side of the limit ring is in contact with the temperature bulb; the elastic member is sleeved on the sleeve body. On the body, one end of the elastic member close to the valve port abuts against the other side of the limit ring.

Further, the elastic member is a spring, and the outer diameter H of the casing is smaller than the inner diameter I of the elastic member; the outer diameter T of the limiting ring is smaller than the inner diameter V of the valve chamber.

Further, the end of the guide sleeve far away from the valve port has a guiding slope; the end of the valve seat far away from the valve port has a constriction structure, and the constriction structure abuts against the end of the elastic member far away from the valve port.

Further, the temperature bulb includes a guide shaft, a limit shaft and a drive shaft connected in sequence, wherein the limit shaft has a diameter larger than the guide shaft and the drive shaft, and the drive shaft cooperates with the valve core; the guide sleeve is sleeved on the guide shaft, One end of the guide sleeve close to the valve port abuts against the limit shaft; the inner diameter J of the guide sleeve is larger than the outer diameter K of the guide shaft.

Further, the spool has a guide hole, the drive shaft includes a drive section, a push rod and a guide section connected in sequence, the drive section is connected to the limit shaft, and the diameters of the push rod, the guide section and the drive section increase sequentially, wherein the guide section Penetrating into the guide hole, the outer wall of the guide section matches the inner wall of the guide hole, and the end face of the guide section abuts against the bottom wall of the guide hole; the opening of the guide hole has a chamfer, and the valve core also has an assembly hole communicating with the guide hole. The diameter of the assembly hole is larger than the diameter of the guide hole, and the outer wall of the driving section cooperates with the inner wall of the assembly hole.

Further, the antifreeze valve also includes: an elastic member, which is sleeved on the temperature bulb; a guide sleeve, which is sleeved on the temperature bulb and the elastic member, and the guide sleeve extends along the extension direction of the valve cavity, and at least part of the guide sleeve is in contact with the valve The inner wall of the cavity is fitted, the end of the guide sleeve close to the valve port is in contact with the temperature bulb, and the end of the elastic member close to the valve port is in contact with the temperature bulb or the guide sleeve.

Further, the temperature bulb includes a guide shaft and a limit shaft connected to each other, and the limit shaft protrudes from the guide shaft; the guide sleeve includes a sleeve body and a limit ring connected to each other, the sleeve body and the guide shaft are arranged at intervals, and the limit ring A mounting hole matching the guide shaft is arranged on the top, the limit ring abuts against the limit shaft, and the elastic member is located between the guide shaft and the sleeve body.

Further, the sleeve body has a first guide section and a second guide section connected to each other, the second guide section is connected with the limit ring, the first guide section is attached to the inner wall of the valve chamber, and the second guide section is connected to the inner wall of the valve chamber interval setting.

Further, a positioning flange is formed between the first guiding segment and the second guiding segment, and the elastic member abuts on the positioning flange.

Further, the end of the first guide section away from the valve port is provided with a guide surface, and the guide surface is set at a preset angle with the extending direction of the guide sleeve, so as to guide the temperature bulb through the guide surface.

Further, the second guide segment is provided with a communication through hole, the gap between the second guide segment and the inner wall of the valve cavity forms a first communication gap, and the communication through hole communicates with the inner cavity of the guide sleeve and the first communication gap; the limit shaft and the valve cavity The inner walls of the cavity are arranged at intervals to form the second flow gap; wherein, the inner cavity of the guide sleeve, the flow through hole, the first flow gap and the second flow gap form the first channel.

Applying the technical solution of the present application, an antifreeze valve is provided, including: a valve seat, the valve seat has a valve cavity and a valve port, the side wall of the valve cavity has a limiting surface; the valve core is movably arranged in the valve cavity, To close or open the valve port; the temperature bulb is movably arranged in the valve cavity, and one end of the temperature bulb is matched with the valve core. The temperature bulb has a stop surface, and the stop surface and the limit surface stop and cooperate. There is an included angle between the limit surface and the moving direction of the temperature bulb; the first channel is set between the side wall of the temperature bulb and the side wall of the valve seat; the second channel is set between the limit surface and the stop surface During the interval, the second channel communicates with the first channel; wherein, when the valve port is open, the second channel communicates with the valve port. When in use, fluid flows in from the end of the valve seat away from the valve port, and then enters the first channel and the second channel in sequence. When the valve port is open, the second channel communicates with the valve port, so that the fluid can flow out from the valve port. Through the above arrangement, the structure of the circulation channel of the antifreeze valve is relatively simple, so that the overall structure of the antifreeze valve is simple and easy to process while achieving smooth fluid flow. The second channel is provided between the limiting surface and the stop surface, which ensures that the fluid can still flow when the stop surface and the stop surface cooperate with each other, and facilitates processing. Wherein, through the stop cooperation between the stop surface and the limit surface, the temperature bulb can be limited in the moving direction of the temperature bulb, thereby limiting the moving range of the temperature bulb.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application. In the attached picture:

Fig. 1 shows the sectional view of the antifreeze valve provided by the embodiment of the present application;

Fig. 2 shows the sectional view of Z-Z position in Fig. 1;

Fig. 3 shows a sectional view of the valve seat in Fig. 1;

Figure 4 shows a top view of the valve seat in Figure 3;

Fig. 5 shows a schematic structural view of a temperature bulb in Fig. 1;

Fig. 6 shows the top view of the temperature bulb in Fig. 5;

Fig. 7 shows the structural representation of another kind of temperature bulb in Fig. 1;

Figure 8 shows a top view of the temperature bulb in Figure 7;

Figure 9 shows a cross-sectional view of the spool in Figure 1;

Figure 10 shows a top view of the spool in Figure 9;

Fig. 11 shows a partial enlarged view of the antifreeze valve in Fig. 1 at the valve port;

Fig. 12 shows a schematic diagram of dimensioning of the valve seat in Fig. 1;

Figure 13 shows a schematic diagram of the dimensioning of the spool in Figure 1;

Fig. 14 shows a schematic structural view of an antifreeze valve provided by another embodiment of the present application;

Fig. 15 shows a schematic diagram of dimensioning of the guide sleeve in Fig. 14;

Figure 16 shows a schematic view of the valve seat in Figure 14;

Figure 17 shows a schematic diagram of the temperature bulb in Figure 14;

Figure 18 shows a schematic diagram of the spool in Figure 14;

Figure 19 shows a schematic view of the elastic member in Figure 14;

Fig. 20 shows a schematic structural view of an antifreeze valve provided by another embodiment of the present application;

Figure 21 shows a schematic diagram of the guide sleeve in Figure 20;

Figure 22 shows a top view of the valve seat in the antifreeze valve provided in Figure 20;

Figure 23 shows a cross-sectional view in one direction of the antifreeze valve provided in Figure 20 to open the valve port;

Fig. 24 shows a cross-sectional view of the antifreeze valve provided in Fig. 20 in another direction when the valve port is opened.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10, valve seat; 11, valve chamber; 111, limit surface; 1111, groove; 112, first valve hole; 113, second valve hole; 12, valve port; 121, first sealing surface; 122, cylinder Surface; 13. Neck structure;

20, spool; 21, stop shaft; 211, second gap; 22, mandrel; 23, annular groove; 24, second sealing surface; 25, guide surface; 26, transition surface; 27, guide hole; 28 , Mounting hole;

30, temperature bulb; 31, guide shaft; 32, limit shaft; 321, stop surface; 322, first gap; 33, drive shaft; 331, drive section; 332, ejector rod; 333, guide section;

41. The first channel; 42. The second channel;

51. Elastic member; 52. Driving spring;

60. The third channel; 61. The first sub-channel; 62. The second sub-channel;

70. Sealing ring;

80, guide sleeve; 81, sleeve body; 811, first guide section; 812, second guide section; 8121, circulation through hole; 82, limit ring; 83, guide slope; 84, positioning flange;

90, limit piece; 91, circulation port.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

As shown in Figures 1 to 10, the embodiment of the present application provides an antifreeze valve, including: a valve seat 10, the valve seat 10 has a valve cavity 11 and a valve port 12, and the side wall of the valve cavity 11 has a limiting surface 111 The spool 20 is movably arranged in the valve cavity 11 to close or open the valve port 12; the temperature package 30 is movably arranged in the valve cavity 11, and one end of the temperature package 30 cooperates with the spool 20, and the temperature package 30 has a stop surface 321, and the stop surface 321 and the limit surface 111 stop and cooperate, and both the stop surface 321 and the limit surface 111 have an angle between the moving direction of the temperature bulb 30; the first channel 41 is arranged on Between the side wall of the temperature bulb 30 and the side wall of the valve seat 10; the second passage 42 is arranged between the limiting surface 111 and the stop surface 321, and the second passage 42 communicates with the first passage 41; wherein, the valve port When 12 is open, the second channel 42 communicates with the valve port 12 .

Through the above arrangement, the structure of the circulation channel of the antifreeze valve is relatively simple, so that the overall structure of the antifreeze valve is simple and easy to process while achieving smooth fluid flow. The second channel 42 is provided between the limiting surface 111 and the stop surface 321 , which ensures that the fluid can still flow when the stop surface 321 and the limit surface 111 stop and cooperate, and facilitates processing. Wherein, through the stop cooperation between the stop surface 321 and the limit surface 111, the temperature bulb 30 can be limited in the moving direction of the temperature bulb 30, thereby limiting the moving range of the temperature bulb 30.

Optionally, the second channel 42 can be arranged on the stop surface 321 of the temperature bulb 30 , or on the limit surface of the valve cavity 11 . Wherein, the included angle between the stop surface 321 , the limit surface 111 and the moving direction of the temperature bulb 30 can be set as 90°.

Wherein, the limit surface 111 or the stop surface 321 has a groove 1111 , and the groove 1111 forms the second channel 42 . Both the limit surface 111 and the stop surface 321 can be provided with a groove 1111 , through which the fluid can smoothly pass between the limit surface 111 and the stop surface 321 , that is, through the second channel 42 . In this solution, there are two grooves 1111, which improves the smoothness of fluid circulation.

Specifically, the valve chamber 11 includes a first valve hole 112 and a second valve hole 113 that communicate with each other. The diameter of the first valve hole 112 is larger than the diameter of the second valve hole 113. The joint has a limit surface 111; the temperature bulb 30 includes a guide shaft 31, a limit shaft 32 and a drive shaft 33 connected in sequence, the radial dimension of the limit shaft 32 is greater than that of the guide shaft 31, the drive shaft 33, and the guide The shaft 31 and the limit shaft 32 are arranged in the first valve hole 112, the drive shaft 33 and the valve core 20 are arranged in the second valve hole 113, the limit shaft 32 has a stop surface 321, and the first channel 41 is located on the limit shaft. 32 and the inner wall of the first valve hole 112.

With the above arrangement, the limit surface 111 at the connection between the first valve hole 112 and the second valve hole 113 can be limitedly matched with the stop surface 321 on the limit shaft 32 to limit the moving range of the temperature bulb 30 . Wherein, the diameter of the first valve hole 112 is greater than the diameter of the second valve hole 113 in order to form a limiting surface 111 at the joint; the radial dimension of the limiting shaft 32 is greater than the radial dimension of the guide shaft 31 and the drive shaft 33, Easy to assemble and limit. By arranging the driving shaft 33 and the valve core 20 in the second valve hole 113 , it is convenient for the driving shaft 33 to cooperate with the valve core 20 .

As shown in Figure 5 and Figure 6, in one solution, the limit shaft 32 is cylindrical, the side wall of the limit shaft 32 and the inner wall of the first valve hole 112 have clearance fit, the side wall of the limit shaft 32 and the first The gap between the inner walls of the valve hole 112 forms the first passage 41 . The limiting shaft 32 is configured as a cylinder, which is convenient for matching with the inner wall of the first valve hole 112 . The side wall of the limiting shaft 32 and the inner wall of the first valve hole 112 are arranged in a clearance fit, leaving a gap to ensure the smooth passage of fluid.

Further, the value of the gap between the side wall of the limiting shaft 32 and the inner wall of the first valve hole 112 is greater than or equal to 0.1 mm. Limiting the gap value between the two within the above numerical range can ensure that the fluid passes smoothly through the gap between the side wall of the limiting shaft 32 and the inner wall of the first valve hole 112, reducing or avoiding the occurrence of unsmooth fluid circulation or even blockage. question.

Alternatively, as shown in FIGS. 7 and 8 , in another solution, the sidewall of the limiting shaft 32 has a first notch 322 , and the first notch 322 forms the first channel 41 . The first notch 322 is provided on the side wall of the limiting shaft 32, which not only ensures that the fluid can pass through the first channel 41, but also facilitates processing. Wherein, setting the first notches 322 into two improves the smoothness of fluid circulation. The first notch 322 can be understood as being formed by removing part of the material of the limiting shaft 32 during processing.

Specifically, the antifreeze valve further includes a third channel 60, the third channel 60 is located between the side wall of the valve core 20 and the side wall of the valve chamber 11, the third channel 60 communicates with the second channel 42; wherein, the valve port 12 is opened In the case of , the third channel 60 communicates with the valve port 12 . In this solution, the third channel 60 is in communication with the second channel 42 , which ensures that the fluid can enter the third channel 60 after passing through the second channel 42 . When the valve port 12 is opened, the third channel 60 communicates with the valve port 12, that is, the fluid can flow out of the valve port 12, thereby realizing the drainage function.

Wherein, the spool 20 includes a stop shaft 21 and a core shaft 22 connected to each other, the radial dimension of the stop shaft 21 is greater than the radial dimension of the core shaft 22, and the core shaft 22 is used to close or open the valve port 12; the antifreeze valve also Including a drive spring 52, the drive spring 52 is sleeved on the mandrel 22, one end of the drive spring 52 is in contact with the end face of the stopper shaft 21, and the other end of the drive spring 52 is in contact with the bottom wall of the valve chamber 11; the third channel 60 includes a first sub-channel 61 and a second sub-channel 62 communicating with each other. The first sub-channel 61 is located between the side wall of the stop shaft 21 and the side wall of the valve chamber 11, and the second sub-channel 62 is located between the side wall of the mandrel 22. Between the side wall and the side wall of the valve cavity 11.

In this solution, the radial dimension of the stopper shaft 21 is set to be larger than the radial dimension of the mandrel 22, so that the stopper shaft 21 can be limitedly fitted with the drive spring 52, so that the elastic force of the drive spring 52 can act on the valve. Core 20. By setting the driving spring 52, the elastic force of the driving spring 52 acts on the valve core 20, thereby driving the valve core 20 to move. When the temperature bulb 30 moves toward one end of the valve port 12, the valve core 20 is pushed to move towards the valve port 12, thereby compressing the drive spring 52, so that the valve core 20 is against the valve port 12, that is, the valve port 12 is in a closed state; When 30 moves toward the end far away from the valve port 12, since the driving spring 52 is in a compressed state, the elastic force of the driving spring 52 will push the valve core 20 to move toward the end far away from the valve port 12, that is, the valve port 12 is in an open state.

Further, the side wall of the stop shaft 21 has a second notch 211 , and the second notch 211 forms the first sub-channel 61 . A second notch 211 is provided on the side wall of the stop shaft 21, which not only ensures that the fluid can pass through the stop shaft 21, but also facilitates processing. Wherein, setting the second notches 211 into two improves the smoothness of fluid circulation.

As shown in Figure 1, the antifreeze valve also includes: an elastic member 51, which is sleeved on the temperature bulb 30, the end of the elastic member 51 close to the valve port 12 abuts against the stepped surface of the temperature bulb 30, and the valve seat 10 is far away from the valve port 12. One end has a constriction structure 13, the constriction structure 13 abuts against the end of the elastic member 51 away from the valve port 12, the opening of the constriction structure 13 communicates with the valve chamber 11, and there is a supply valve between the elastic member 51 and the outer wall of the temperature bulb 30. gap through which fluid passes. One end of the elastic member 51 is in contact with the stepped surface of the temperature bulb 30 , and the end away from the valve port 12 is in contact with the constriction structure 13 , so that the elastic member 51 can be prevented from popping out. By setting the elastic member 51 , pressure can be applied to the temperature bulb 30 to make the temperature bulb 30 abut against the valve core 20 . A gap is provided between the elastic member 51 and the outer wall of the temperature bulb 30 to ensure that the fluid can pass through smoothly. The opening on the constriction structure 13 is used for fluid inflow.

As shown in Figures 11 to 13, the valve port 12 has a tapered first sealing surface 121; the valve core 20 has an annular groove 23, a tapered second sealing surface 24 and a tapered guide surface 25, and the annular groove 23 is located at Between the second sealing surface 24 and the guide surface 25, the diameter A of the large end of the guide surface 25 is smaller than the diameter G of the small end of the second sealing surface 24, and the second sealing surface 24 is used for limiting cooperation with the first sealing surface 121; The ring 70 is arranged in the annular groove 23 , wherein when the valve port 12 is closed, the sealing ring 70 abuts against the first sealing surface 121 .

With this solution, by setting a tapered guide surface 25, and the diameter A of the large end of the guide surface 25 is smaller than the diameter G of the small end of the second sealing surface 24, the guide surface 25 can play a guiding role, so that the valve core 20 is closed. When the valve port is 12, the guide surface 25 can enter the valve port 12 first, and then seal after the valve core 20 is adjusted to make the seal more reliable. The sealing performance of the valve port 12 can be improved by setting the tapered first sealing surface 121 and the second sealing surface 24 in limited fit. When the valve port 12 is closed, the sealing ring 70 abuts against the first sealing surface 121, and the sealing ring 70 is in close contact with the inner wall of the annular groove 23, thereby improving the sealing performance of the valve port 12.

Specifically, the valve port 12 also has a cylindrical surface 122, the cavity formed around the cylindrical surface 122 communicates with the cavity formed around the first sealing surface 121, and the diameter A of the large end of the guide surface 25 is smaller than the diameter B of the cylindrical surface 122; , when the valve port 12 is closed, the guide surface 25 extends into the cylindrical surface 122 . By setting the cylindrical surface 122, and the diameter A of the large end of the guiding surface 25 is smaller than the diameter B of the cylindrical surface 122, the guiding surface 25 can smoothly enter the cylindrical surface 122 and play a guiding role.

Wherein, the valve core 20 also has a cylindrical transition surface 26, the transition surface 26 is located between the guide surface 25 and the annular groove 23, and the diameter of the transition surface 26 is equal to the diameter A of the large end of the guide surface 25; wherein, the valve port 12 is closed In this case, the transition surface 26 protrudes into the cylindrical surface 122 . The transition surface 26 is set to be cylindrical, and the diameter of the transition surface 26 is equal to the diameter A of the large end of the guide surface 25. When the valve port 12 is closed, the transition surface 26 can further play a guiding role, so that the valve core 20 is piloted. The valve port 12 is sealed again after positive, which ensures the sealing effect.

Specifically, the taper angles of the first sealing surface 121 and the second sealing surface 24 are the same, and when the valve port 12 is closed, the second sealing surface 24 is in contact with the first sealing surface 121 . Setting the first sealing surface 121 and the second sealing surface 24 with the same cone angle can make the second sealing surface 24 closely fit the first sealing surface 121 when the valve port 12 is closed, thereby improving the sealing performance of the valve port 12 .

Specifically, the sealing ring 70 is made of elastic material. When the valve port 12 is opened, the outer diameter E of the sealing ring 70 is larger than the diameter B of the small end of the first sealing surface 121 and smaller than the diameter F of the large end of the first sealing surface 121. . The sealing ring 70 is made of elastic material, and the outer diameter E of the sealing ring 70 is larger than the diameter B of the small end of the first sealing surface 121 and smaller than the diameter F of the large end of the first sealing surface 121. When the valve port 12 is closed, The sealing ring 70 is elastically deformed by being squeezed, so that the sealing ring 70 can abut against the first sealing surface 121 and the inner wall of the annular groove 23, and the sealing area is large, which ensures the tightness of the sealing of the valve port 12 and improves the sealing performance. The service life of the antifreeze valve is extended.

Wherein, the diameter G of the small end of the second sealing surface 24 is larger than the diameter B of the small end of the first sealing surface 121 and smaller than the diameter F of the large end of the first sealing surface 121 . The small end diameter G of the second sealing surface 24 is set to be larger than the small end diameter B of the first sealing surface 121, so that the second sealing surface 24 cannot be stretched into the cylindrical surface 122; meanwhile, the second sealing surface 24 The diameter G of the small end of the valve is set to be smaller than the diameter F of the large end of the first sealing surface 121, which ensures that the second sealing surface 24 and the first sealing surface 121 can effectively cooperate, and improves the stability and reliability of the sealing of the valve port 12.

Specifically, the diameter C of the small end of the guide surface 25 is smaller than the inner diameter D of the sealing ring 70 . In this way, the sealing ring 70 can pass through the guide surface 25 smoothly, which is convenient for installation.

As shown in Figures 14 to 19, the embodiment of the present application provides another antifreeze valve. On the basis of the above embodiments, the antifreeze valve further includes: a guide sleeve 80, which is sleeved on the temperature bulb 30, and the guide sleeve 80 One end close to the valve port 12 abuts against the temperature bulb 30;

With this solution, by setting the guide sleeve 80 on the temperature bulb 30, and setting the elastic member 51 on the guide sleeve 80, the relatively large gap between the elastic member 51 and the temperature bulb 30 is eliminated, and the guide sleeve 80 can be Guide the temperature bulb 30 and the elastic member 51 . In this way, during assembly, due to the guiding and limiting functions of the guide sleeve 80, the problem of deviation of the temperature bulb 30 due to the unbalanced pressure of the elastic member 51 can be reduced or avoided, thereby improving the working stability of the temperature bulb 30. Wherein, the inner wall of the guide sleeve 80 cooperates with the outer wall of the temperature bulb 30, and the outer wall of the guide sleeve 80 cooperates with the inner wall of the elastic member 51, which can reduce the influence of the elastic member on the temperature bulb 30 during assembly, and improve the stability during work. ,reliability.

Specifically, the guide sleeve 80 includes a sleeve body 81 and a limit ring 82 arranged at one end of the sleeve body 81. The outer diameter of the limit ring 82 is larger than the outer diameter of the sleeve body 81. One side of the limit ring 82 is in contact with the temperature bulb 30. Connect; the elastic member 51 is sleeved on the casing 81 , and one end of the elastic member 51 close to the valve port 12 abuts against the other side of the stop ring 82 . The guide sleeve 80 is provided with a sleeve body 81, and the elastic member 51 is sleeved on the sleeve body 81, so that the elastic member 51 does not directly act on the temperature bulb 30, reducing or avoiding the temperature sensor 30 being affected by the elastic component during work. 51 affects the problem of deviation; the setting of the limit ring 82 can make the elastic member 51 abut against the limit ring 82, so that the elastic force of the elastic member 51 can be applied to the temperature bulb 30 through the limit ring 82, thereby making the temperature Bag 30 withstands spool 20 .

Wherein, the elastic member 51 is a spring, and the outer diameter H of the casing 81 is smaller than the inner diameter I of the elastic member 51 . In the present application, the elastic member 51 is set as a spring, which has large elastic deformation capacity and strong recovery ability; the outer diameter H of the sleeve body 81 is smaller than the inner diameter I of the elastic member 51, which is convenient for the elastic member 51 to be sleeved on the sleeve body 81. Also gaps can be formed to allow fluid to pass through.

Further, the outer diameter T of the limiting ring 82 is smaller than the inner diameter V of the valve cavity 11 . Such arrangement can ensure that a gap is formed between the limit ring 82 and the inner wall of the valve cavity 11 for fluid to pass through, facilitate installation, and prevent the guide sleeve 80 from being stuck when moving with the temperature bulb 30 .

Specifically, the end of the guide sleeve 80 away from the valve port 12 has a guide slope 83 . By setting the guide inclined surface 83, when the temperature bulb 30 moves toward the end away from the valve port, it can be guided in advance to prevent the guide sleeve 80 from being stuck on the inner ring of the elastic member 51, thereby improving the stability of the temperature bulb 30 during operation. .

Specifically, the end of the valve seat 10 away from the valve port 12 has a constriction structure 13 , and the constriction structure 13 abuts against the end of the elastic member 51 far away from the valve port 12 . By arranging the constriction structure 13 to abut against one end of the elastic member 51 , the elastic member 51 can be limited, thereby preventing the elastic member 51 from popping out. In this solution, the necking structure 13 and the elastic member 51 can be connected by riveting, and the structure is stable, firm and easy to assemble.

During the riveting assembly process, the downward pressure of the elastic member 51 is unbalanced. If there is no guide sleeve 80 for guidance, the temperature bulb 30 may be tilted, resulting in high resistance to the up and down movement of the temperature bulb 30 and failure of action. After the guide sleeve 80 is set, on the one hand, it can prevent the temperature bulb 30 from being eccentric during riveting, and on the other hand, it can prevent the temperature bulb 30 from being eccentric in motion, thereby increasing the reliability of the temperature bulb 30 movement, and making the action of the antifreeze valve more stable when opening and closing the valve. The more flexible, the better the consistency.

Specifically, the temperature bulb 30 includes a guide shaft 31, a limit shaft 32 and a drive shaft 33 connected in sequence, wherein the diameter of the limit shaft 32 is larger than the diameter of the guide shaft 31 and the drive shaft 33, and the drive shaft 33 and the valve core 20 cooperate The guide sleeve 80 is sleeved on the guide shaft 31, and the end of the guide sleeve 80 close to the valve port 12 abuts against the limit shaft 32. The setting of the guide shaft 31 is convenient for setting the guide sleeve 80 on the guide shaft 31; the purpose of setting the limit shaft 32 is to carry out limit cooperation with the inner wall of the valve chamber 11 in the axial direction, thereby limiting the range of movement of the temperature bulb 30, and can Bearing the elastic force exerted by the elastic member 51; by setting the driving shaft 33 to cooperate with the valve core 20, when the temperature bulb 30 is stretched, it can drive the valve core 20 to move, so that the valve core 20 closes the valve port 12.

Wherein, the inner diameter J of the guide sleeve 80 is larger than the outer diameter K of the guide shaft 31 . Such setting is convenient for the guide sleeve 80 to be sleeved on the guide shaft 31 smoothly.

Further, the valve core 20 has a guide hole 27, and the drive shaft 33 includes a drive section 331, a push rod 332 and a guide section 333 connected in sequence, the drive section 331 is connected to the limit shaft 32, and the push rod 332, the guide section 333 and the drive section The diameter of 331 increases successively, wherein, the guide section 333 penetrates into the guide hole 27, the outer wall of the guide section 333 cooperates with the inner wall of the guide hole 27, and the end surface of the guide section 333 abuts against the bottom wall of the guide hole 27.

A guide hole 27 is provided on the valve core 20 to guide the guide section 333 . With the above arrangement, when the valve core 20 is well oriented, it can guide the temperature bulb 30 ; when the temperature bulb 30 is well oriented, it can guide the valve core 20 . Therefore, the spool 20 and the temperature bulb 30 can guide each other, making the guidance more stable and reliable, thereby ensuring the stability of the temperature bulb 30 during work, and improving the sealing performance of the valve core 20 when closing the valve port 12 .

Wherein, the opening of guide hole 27 has chamfering, and spool 20 also has the assembly hole 28 that communicates with guide hole 27, and the diameter of assembly hole 28 is larger than the diameter of guide hole 27, and the outer wall of driving section 331 and the inner wall of assembly hole 28 cooperate. . By providing a chamfer on the opening of the guide hole 27 and the diameter of the assembly hole 28 is larger than that of the guide hole 27 , the assembly of the temperature bulb 30 and the valve core 20 can be facilitated. Moreover, the cooperation between the outer wall of the driving section 331 and the inner wall of the assembly hole 28 can also make the valve core 20 and the temperature bulb 30 guide each other.

As shown in Figures 20 to 24, in another embodiment of the present application, the antifreeze valve further includes: an elastic member 51, which is sleeved on the temperature bulb 30; a guide sleeve 80, which is sleeved on the temperature bulb 30 and the elastic On the member 51, the guide sleeve 80 extends along the extension direction of the valve chamber 11, at least part of the guide sleeve 80 is attached to the inner wall of the valve chamber 11, the end of the guide sleeve 80 near the valve port 12 is in contact with the temperature bulb 30, and the elastic member 51 One end close to the valve port 12 abuts against the temperature bulb 30 or the guide sleeve 80 .

In this embodiment, by setting the guide sleeve 80 on the temperature bulb 30 and the elastic member 51, that is, the temperature bulb 30 and the elastic member 51 are both located in the inner cavity of the guide sleeve 80, and at least the guide sleeve 80 The part fits with the inner wall of the valve cavity 11, so that the movement of the temperature bulb 30 can be effectively guided by the guide sleeve 80, and the displacement of the temperature bulb 30 can be avoided during the movement, so as to ensure that the temperature bulb 30 is in line with the valve seat 10 when it moves up and down. Good concentricity improves the movement reliability and coaxiality of the temperature bulb 30 in the valve seat 10, thereby improving the positioning effect of the temperature bulb 30 on the valve core 20, ensuring that the valve core 20 moves up and down reliably, thereby ensuring the sealing of the valve port 12 reliability. Therefore, the antifreeze valve provided by this embodiment can solve the technical problem of poor sealing reliability of the valve port 12 of the antifreeze valve in the prior art.

It should be noted that "at least part of the guide sleeve 80 fits with the inner wall of the valve chamber 11" in this embodiment does not mean that at least part of the guide sleeve 80 is completely attached to the inner wall of the valve chamber 11, but the guide sleeve can There is a small gap between at least part of 80 and the inner wall of the valve cavity 11, but this small gap does not affect the guiding of the position of the guide sleeve 80 along the extending direction of the inner wall of the valve cavity 11 through the inner wall of the valve cavity 11, To effectively ensure the guiding smoothness and stability of the guide sleeve 80 .

In this embodiment, the temperature bulb 30 includes a guide shaft 31 and a limit shaft 32 connected to each other, and the limit shaft 32 protrudes from the guide shaft 31; the guide sleeve 80 includes a sleeve body 81 and a limit ring 82 connected to each other. The sleeve body 81 is spaced apart from the guide shaft 31, and the limit ring 82 is provided with a mounting hole suitable for the guide shaft 31. The limit ring 82 abuts against the limit shaft 32, and the elastic member 51 is located between the guide shaft 31 and the sleeve body. Between 81. With such a structural arrangement, the contact area between the limiting ring 82 and the limiting shaft 32 is increased through the abutment between the limiting ring 82 and the limiting shaft 32 , thereby effectively improving the positioning stability of the guide sleeve 80 .

Wherein, the sleeve body 81 has a first guide section 811 and a second guide section 812 connected to each other, the second guide section 812 is connected with the limit ring 82, the first guide section 811 is attached to the inner wall of the valve chamber 11, and the second guide section 812 The segment 812 is spaced apart from the inner wall of the valve cavity 11 . With such a structural arrangement, the guiding stability of the guide sleeve 80 can be improved through the first guide section 811 , and the guiding resistance of the guide sleeve 80 can be reduced easily through the avoidance of the second guide section 812 and the inner wall of the valve cavity 11 .

In this embodiment, a positioning flange 84 is formed between the first guiding section 811 and the second guiding section 812 , and the elastic member 51 abuts against the positioning flange 84 . With such a structural arrangement, the elastic member 51 can be effectively positioned, so that the elastic member 51 can be compressed or stretched along the extension direction of the valve cavity 11 , and the stability of the elastic member 51 can be improved. Specifically, a positioning flange 84 is formed between the first guiding section 811 and the second guiding section 812 , and the elastic member 51 abuts on the positioning flange 84 .

Specifically, the end of the first guiding section 811 away from the valve port 12 is provided with a guiding slope 83 , which is set at a predetermined angle with the extending direction of the guide sleeve 80 , so as to guide the temperature bulb 30 through the guiding slope 83 . With such a structural arrangement, the elastic member 51 protruding from the guide sleeve 80 can be smoothly compressed into the inner cavity of the guide sleeve 80 under the guidance of the guide inclined surface 83, so as to improve the stability of the elastic member.

In this embodiment, the second guide segment 812 is provided with a communication through hole 8121, the gap between the second guide segment 812 and the inner wall of the valve chamber 11 forms a first communication gap, and the communication through hole 8121 communicates with the inner cavity of the guide sleeve 80 and the first communication gap. A flow gap; the limit shaft 32 is spaced apart from the inner wall of the valve cavity 11 to form a second flow gap; wherein, the inner cavity of the guide sleeve 80, the flow through hole 8121, the first flow gap and the second flow gap form the first channel 41. With such a structural arrangement, it is convenient for the fluid to flow smoothly from the inner cavity of the guide sleeve 80 to the valve port 12 when the antifreeze valve is running, so that the antifreeze valve can work smoothly.

Specifically, a groove 1111 may be provided on the inner wall of the valve seat 10, the second communication gap communicates with the third communication gap through the groove 1111, and the structural layout is optimized to facilitate the communication between the second communication gap and the third communication gap, so that Fluid flows smoothly.

Specifically, the gap between the outer diameter of the valve core 20 and the valve core 20 in this embodiment is greater than or equal to 0.4 mm. With such a structural arrangement, the flow capacity of the antifreeze valve can be effectively guaranteed.

Specifically, the valve port 12 in this embodiment is located at one end of the valve chamber 11, and the other end of the valve chamber 11 is a communication port, and a limiter 90 is installed at the communication port, and the limiter 90 is riveted at the communication port, and the limiter 90 is provided with a flow port 91 .

In this embodiment, the end of the elastic member 51 close to the communication port can abut against the limiting member 90 to improve the stability of the elastic member 51 . Alternatively, the guide shaft 31 of the temperature bulb 30 is movably installed at the flow opening 91 of the limiting member 90 so that the temperature bulb 30 has enough space for expansion and contraction. Alternatively, the end of the elastic member 51 near the communication port abuts against the limiting member 90 to improve the stability of the elastic member 51; mouth 91 so that the temperature bulb 30 has enough space for expansion and contraction.

It should be noted that "the guide shaft 31 of the temperature bulb 30 is movably installed at the circulation port 91 of the stopper 90" here does not mean that the guide shaft 31 of the temperature bulb 30 must be passed through the stopper. 90 at the flow opening 91, but means that when the temperature bulb 30 is subject to temperature changes and the length changes, the elastic member 51 can be compressed and passed through the flow opening 91 of the limiting member 90.

In this embodiment, the fluid passes through the inner side of the guide sleeve 80, the flow through hole 8121, the first flow gap, the second flow gap between the temperature bulb 30 and the valve seat 10, the groove 1111 of the valve seat 10, and the gap between the end surface of the valve core 20 and the valve seat. The gap between them and the valve port 12 realize the circulation of fluid. The circulation passages everywhere are large enough to ensure the flow capacity, improve the Kv value of the flow capacity when the antifreeze valve is opened, and increase the drainage capacity. The reliable guide setting of the guide sleeve 80 and the improvement of the flow channel make the guide not need the gap between the temperature bulb 30 and the valve seat 10, so the gap between the temperature bulb 30 and the valve seat 10 can be enlarged, and the flow capacity can be greatly improved.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

An antifreeze valve, characterized in that it comprises:

A valve seat (10), the valve seat (10) has a valve cavity (11) and a valve port (12), and the side wall of the valve cavity (11) has a limiting surface (111);

a spool (20) movably arranged in the valve chamber (11) to close or open the valve port (12);

A temperature bulb (30), which is movably arranged in the valve chamber (11), one end of the temperature bulb (30) cooperates with the valve core (20), and the temperature bulb (30) has a stop surface (321), the stopper surface (321) and the limiting surface (111) stop and cooperate, and the stopper surface (321) and the limiting surface (111) are both in contact with the temperature bulb (30 ) has an included angle between the moving directions;

A first passage (41), arranged between the side wall of the temperature bulb (30) and the side wall of the valve seat (10);

The second passage (42) is arranged between the limiting surface (111) and the stop surface (321), and the second passage (42) communicates with the first passage (41); wherein, When the valve port (12) is open, the second channel (42) communicates with the valve port (12).
The antifreeze valve according to claim 1, characterized in that, there is a groove (1111) on the limit surface (111) or the stop surface (321), and the groove (1111) forms the first Two channels (42).
The antifreeze valve according to claim 1, characterized in that,

The valve cavity (11) includes a first valve hole (112) and a second valve hole (113) communicating with each other, the diameter of the first valve hole (112) is larger than the diameter of the second valve hole (113) , the junction of the first valve hole (112) and the second valve hole (113) has the limiting surface (111);

The temperature bulb (30) includes a guide shaft (31), a limit shaft (32) and a drive shaft (33) connected in sequence, and the radial dimension of the limit shaft (32) is larger than that of the guide shaft (31) , the radial dimension of the drive shaft (33), the guide shaft (31) and the limit shaft (32) are arranged in the first valve hole (112), the drive shaft (33) and The valve core (20) is arranged in the second valve hole (113), the limit shaft (32) has the stop surface (321), the first channel (41) is located at the limit Between the side wall of the position axis (32) and the inner wall of the first valve hole (112).
The antifreeze valve according to claim 3, characterized in that, the limit shaft (32) is cylindrical, and there is a gap between the side wall of the limit shaft (32) and the inner wall of the first valve hole (112). Cooperate, the gap between the side wall of the limiting shaft (32) and the inner wall of the first valve hole (112) forms the first channel (41).
The antifreeze valve according to claim 4, characterized in that, the value of the gap between the side wall of the limiting shaft (32) and the inner wall of the first valve hole (112) is greater than or equal to 0.1 mm; The side wall of the limiting shaft (32) has a first notch (322), and the first notch (322) forms the first channel (41).
The antifreeze valve according to claim 1, characterized in that, the antifreeze valve further comprises a third channel (60), the third channel (60) is located between the side wall of the valve core (20) and the valve Between the side walls of the cavity (11), the third passage (60) communicates with the second passage (42); wherein, when the valve port (12) is opened, the third passage (60 ) communicates with the valve port (12).
The antifreeze valve according to claim 6, characterized in that,

The spool (20) includes a stop shaft (21) and a core shaft (22) connected to each other, the radial dimension of the stop shaft (21) is larger than the radial dimension of the core shaft (22), so The mandrel (22) is used to close or open the valve port (12);

The antifreeze valve also includes a driving spring (52), the driving spring (52) is sheathed on the mandrel (22), one end of the driving spring (52) and the end of the stop shaft (21) The end face abuts, and the other end of the driving spring (52) abuts against the bottom wall of the valve cavity (11);

The third channel (60) includes a first sub-channel (61) and a second sub-channel (62) connected to each other, and the first sub-channel (61) is located on the side wall and the side wall of the stop shaft (21). Between the side walls of the valve cavity (11), the second subchannel (62) is located between the side walls of the mandrel (22) and the side walls of the valve cavity (11).
The antifreeze valve according to claim 7, characterized in that, the side wall of the stopper shaft (21) has a second notch (211), and the second notch (211) forms the first sub-channel (61 ).
The antifreeze valve according to claim 1, characterized in that,

The valve port (12) has a tapered first sealing surface (121); the valve core (20) has an annular groove (23), a tapered second sealing surface (24) and a tapered guide surface ( 25), the annular groove (23) is located between the second sealing surface (24) and the guide surface (25), and the large end diameter A of the guide surface (25) is smaller than that of the second sealing surface The diameter G of the small end of (24), the second sealing surface (24) is used to limit fit with the first sealing surface (121);

The antifreeze valve also includes a sealing ring (70), the sealing ring (70) is arranged in the annular groove (23), and when the valve port (12) is closed, the sealing ring (70) and The first sealing surface (121) abuts against.
The antifreeze valve according to claim 9, characterized in that, the valve port (12) also has a cylindrical surface (122), and the cylindrical surface (122) surrounds the formed cavity and the first sealing surface (121 ) is communicated around the formed cavity, and the large end diameter A of the guide surface (25) is smaller than the diameter B of the cylindrical surface (122); wherein, when the valve port (12) is closed, the guide surface (25) protrudes into said cylindrical surface (122).
The antifreeze valve according to claim 10, characterized in that, the valve core (20) also has a cylindrical transition surface (26), and the transition surface (26) is located between the guide surface (25) and the Between the annular grooves (23), the diameter of the transition surface (26) is equal to the diameter A of the large end of the guide surface (25); wherein, when the valve port (12) is closed, the transition surface ( 26) protruding into said cylindrical surface (122).
The antifreeze valve according to claim 9, characterized in that, the cone angles of the first sealing surface (121) and the second sealing surface (24) are the same, and when the valve port (12) is closed, The second sealing surface (24) is attached to the first sealing surface (121).
The antifreeze valve according to claim 9, characterized in that, the sealing ring (70) is made of elastic material, and when the valve port (12) is opened, the outer diameter E of the sealing ring (70) It is larger than the diameter B of the small end of the first sealing surface (121) and smaller than the diameter F of the large end of the first sealing surface (121).
The antifreeze valve according to claim 9, characterized in that, the diameter G of the small end of the second sealing surface (24) is larger than the diameter B of the small end of the first sealing surface (121) and smaller than the diameter of the first sealing surface (121). The diameter F of the large end of the surface (121); the diameter C of the small end of the guide surface (25) is smaller than the inner diameter D of the sealing ring (70).
The antifreeze valve according to claim 1, wherein the antifreeze valve further comprises:

A guide sleeve (80), sleeved on the temperature bulb (30), and one end of the guide sleeve (80) close to the valve port (12) abuts against the temperature bulb (30);

The elastic member (51) is sleeved on the guide sleeve (80), the end of the elastic member (51) close to the valve port (12) and the guide sleeve (80) or the temperature bulb (30) )Abut.
The antifreeze valve according to claim 15, characterized in that, the guide sleeve (80) comprises a sleeve body (81) and a limiting ring (82) arranged at one end of the sleeve body (81), the limiting ring (82) is The outer diameter of the ring (82) is larger than the outer diameter of the casing (81), and one side of the limiting ring (82) abuts against the temperature bulb (30); the elastic member (51) is sheathed On the sleeve (81), one end of the elastic member (51) close to the valve port (12) abuts against the other side of the limiting ring (82).
The antifreeze valve according to claim 16, characterized in that, the elastic member (51) is a spring, and the outer diameter H of the sleeve (81) is smaller than the inner diameter I of the elastic member (51); The outer diameter T of the position ring (82) is smaller than the inner diameter V of the valve chamber (11).
The antifreeze valve according to claim 15, characterized in that, the end of the guide sleeve (80) away from the valve port (12) has a guide slope (83); the valve seat (10) is far away from the valve One end of the port (12) has a constriction structure (13), and the constriction structure (13) abuts against the end of the elastic member (51) away from the valve port (12).
The antifreeze valve according to claim 15, characterized in that, the temperature bulb (30) includes a guide shaft (31), a limit shaft (32) and a drive shaft (33) connected in sequence, wherein the limit The diameter of the shaft (32) is greater than the diameter of the guide shaft (31) and the drive shaft (33), and the drive shaft (33) cooperates with the valve core (20); the guide sleeve (80) covers Set on the guide shaft (31), the end of the guide sleeve (80) close to the valve port (12) abuts against the limit shaft (32); the inner diameter J of the guide sleeve (80) greater than the outer diameter K of the guide shaft (31).
The antifreeze valve according to claim 19, characterized in that,

The valve core (20) has a guide hole (27), and the drive shaft (33) includes a drive section (331), a push rod (332) and a guide section (333) connected in sequence, and the drive section (331) Connected with the limiting shaft (32), the diameters of the ejector rod (332), the guiding section (333) and the driving section (331) increase sequentially, wherein the guiding section (333) passes through into the guide hole (27), the outer wall of the guide section (333) matches the inner wall of the guide hole (27), the end surface of the guide section (333) and the bottom of the guide hole (27) wall abutment;

The opening of the guide hole (27) has a chamfer, and the valve core (20) also has an assembly hole (28) communicated with the guide hole (27), and the diameter of the assembly hole (28) is larger than the The diameter of the guide hole (27), the outer wall of the driving section (331) is matched with the inner wall of the assembly hole (28).
The antifreeze valve according to claim 1, wherein the antifreeze valve further comprises:

an elastic member (51), the elastic member (51) is sheathed on the temperature bulb (30);

A guide sleeve (80), sleeved on the temperature bulb (30) and the elastic member (51), the guide sleeve (80) extends along the extension direction of the valve cavity (11), and the guide sleeve At least part of (80) fits with the inner wall of the valve cavity (11), the end of the guide sleeve (80) close to the valve port (12) abuts with the temperature bulb (30), the elastic One end of the piece (51) close to the valve port (12) abuts against the temperature bulb (30) or the guide sleeve (80).
The antifreeze valve according to claim 21, characterized in that, the temperature bulb (30) includes a guide shaft (31) and a limit shaft (32) connected to each other, and the limit shaft (32) protrudes from the The guide shaft (31) is set; the guide sleeve (80) includes a sleeve body (81) and a limit ring (82) connected to each other, and the sleeve body (81) is spaced apart from the guide shaft (31), The limiting ring (82) is provided with a mounting hole compatible with the guide shaft (31), the limiting ring (82) abuts against the limiting shaft (32), and the elastic member (51) is located between the guide shaft (31) and the sleeve (81).
The antifreeze valve according to claim 22, characterized in that, the sleeve (81) has a first guide section (811) and a second guide section (812) connected to each other, and the second guide section (812) It is connected with the limit ring (82), the first guide section (811) is attached to the inner wall of the valve chamber (11), and the second guide section (812) is connected to the valve chamber (11) The inner wall interval setting.
The antifreeze valve according to claim 23, characterized in that, a positioning flange (84) is formed between the first guide section (811) and the second guide section (812), and the elastic member (51) abuts against the positioning flange (84).
The antifreeze valve according to claim 23, characterized in that, the end of the first guide section (811) away from the valve port (12) is provided with a guide slope (83), and the guide slope (83) is in line with the The extension direction of the guide sleeve (80) is set at a preset angle, so as to guide the temperature bulb (30) through the guide slope (83).
The antifreeze valve according to claim 23, characterized in that, the second guide section (812) is provided with a communication through hole (8121), and the second guide section (812) is connected to the valve cavity (11) The gap on the inner wall forms a first communication gap, and the communication through hole (8121) communicates with the inner cavity of the guide sleeve (80) and the first communication gap; the limiting shaft (32) and the valve cavity ( 11) the inner wall is arranged at intervals to form a second flow gap; wherein, the inner cavity of the guide sleeve (80), the flow through hole (8121), the first flow gap and the second flow gap constitute the Describe the first channel (41).