TW201621192A - Solenoid valve of beverage supply device - Google Patents

Abstract

The subject of the present invention is to provide a solenoid valve of beverage supply device capable of surely performing sterilization within a short period of time. The solution of the present invention is to provide a solenoid valve of beverage supply device. The solenoid valve comprises: a plunger for performing a linear movement by the electromagnetic force of an electromagnetic coil; and a valve disposed at a front end of the plunger and pushed by a valve base, so as to lock the valve opening, wherein a front end of the plunger of the solenoid valve fixed inside the beverage supply device is disposed further lower than the base end located at the opposite side, and the base end is inclined relative to the vertical axis in a direction away from an inlet of the solenoid valve.

Description

Solenoid valve for beverage supply Field of invention

The present invention relates to a solenoid valve for opening and closing a flow path of a beverage supply device such as a water dispenser.

Background of the invention

In the case of a water stop for the water spout of a water dispenser that supplies beverage water, a solenoid valve that is operated by a user operating a switch is used instead of a manual cock type. For the solenoid valve of the water dispenser for treating beverages, the direct-acting solenoid valve is mainly used, and the flow path is simpler than the pilot type, so it is mainly a direct-acting type that uses sterilization or cleaning. By. Further, in the direct-acting type, a diaphragm type in which the beverage in the solenoid valve is separated from the actuator of the plunger is mainly used.

In the case of the water dispenser, it is necessary to periodically sterilize the piping system including the valve. In this case, the sterilization is carried out by the piping system by the high temperature water as described in Patent Document 1. However, most of the sterilization procedures are carried out with the water stop plug closed. At this time, the high temperature water circulates in the piping system in the water dispenser, but does not pass through the water stop plug, so there is no part of the water stop bolt through which the high temperature water passes. The minute, usually the outflow line side, heats the heat flowing to the nearby high-temperature water through the metal pipe, thereby forming a high temperature state for sterilization. However, there is a problem at this time, that is, when the portion of the water stop plug that does not pass through the high-temperature water has residual beverage water, the time required to reach the sterilization temperature becomes quite long.

Fig. 6 is a schematic longitudinal cross-sectional view of a solenoid valve 200 used as a water stop plug of a water dispenser, which has an inflow line 211, an outflow line 212, and a valve provided at one end of the inflow line 211. Port 213, electromagnetic coil 216, piston 217, valve body 219, and separator 221, and the like. In the solenoid valve 200, after the water dispenser is used, the valve port 213 is closed, and the field B on the side of the inflow line 211 is filled with water, and the water in the field C on the side of the outflow line 212 remains. Water filled in the field B does not cause hygiene problems, but the water remaining in the field C, when the high-temperature water for sterilization does not pass through the field C, causes hygiene problems, or even if it does not, it becomes The main reason for the length of time required for sterilization. This is because the residual water in the field C contacts the outside atmosphere at one end, and the possibility of adhesion and proliferation of the floating bacteria occurs.

Advanced technical literature Patent literature

Patent Document 1: Japanese Invention Application Publication No. 2006-021793

Summary of invention

The present invention has been created in view of the above, and its purpose is A solenoid valve for providing a beverage supply device that can be sterilized in a short time is provided.

In order to solve the above problems, the present invention provides a solenoid valve for a beverage supply device, comprising: a piston that linearly moves by an electromagnetic force of an electromagnetic coil; and a valve body that is disposed at a front end portion of the piston and is seated by the valve seat Pushing, thereby closing the valve port; the piston of the solenoid valve fixed in the beverage supply device is configured such that the front end portion is disposed below the base end portion on the opposite side, and the base end portion is The direction away from the inflow port of the solenoid valve is inclined with respect to the vertical axis.

By tilting the solenoid valve in this way, it is possible to realize a configuration in which no liquid beverage remains in the outflow line, and thus it is possible to realize a solenoid valve which is difficult to reproduce microorganisms, is easy to sterilize, and is hygienic. Further, it is possible to realize a solenoid valve in which air accumulation is hard to occur, or even if air accumulation occurs, the place is limited to the flow path of the beverage liquid or is very close to the flow path, so that there is a flow of the beverage liquid each time. At this time, the liquid can be taken away and the accumulated air can be carried away. Thereby, it is possible to provide a solenoid valve in which there is no heat transfer barrier to the portion to be sterilized, and it can be sterilized in a short time.

In the present invention, the piston may have an enlarged diameter portion, and the enlarged diameter portion functions to be fitted to the cylinder portion, thereby reducing the moving speed of the piston. The enlarged diameter portion of the piston and the air inside the cylinder portion act as an air damper to lower the moving speed of the piston, thereby preventing liquid splashing to the user when the valve is closed.

In the present invention, the solenoid valve may further include a viscous fluid, and the viscous fluid is sealed in a gap between the cylinder portion and the piston, and cooperates with the enlarged diameter portion to reduce the moving speed of the piston. Thereby, it is possible to prevent the liquid splashing of the user, especially when the valve is closed.

In the present invention, the valve body may have a conical projection at its front end.

In the present invention, the solenoid valve may also be a diaphragm type valve having a partition that separates the liquid flowing therethrough from the piston.

The present invention further provides a solenoid valve for a beverage supply device, the solenoid valve of the beverage supply device comprising: a piston linearly moving by an electromagnetic force of the electromagnetic coil; and a valve body disposed at a front end portion of the piston and being pushed by the valve seat Thereby, the valve port is closed; and the partition plate separates the liquid flowing in the electromagnetic valve from the piston; the piston of the electromagnetic valve fixed in the beverage supply device, the front end portion is disposed at a position The base end portion of the opposite side is further below, and the partition plate is inclined with respect to the horizontal line so that the portion of the partition plate on the side of the center axis of the piston close to the inflow port of the solenoid valve is the partition plate farther from the side. The part is more on the top.

The present invention also provides a beverage supply device including any one of the electromagnetic valves of the beverage supply device, wherein the electromagnetic valve is provided in a curved portion of the flow path.

In the present invention, the aforementioned solenoid valve can also be used for controlling external water injection.

1,2,3,4‧‧‧ solenoid valve

11‧‧‧Inflow line

11a‧‧‧Inlet

12‧‧‧Outflow line

12a‧‧‧Exit

13‧‧‧ valve port

14‧‧‧ valve seat

15‧‧‧ valve housing

16‧‧‧Electromagnetic coil

17‧‧‧Piston

18‧‧‧Cylinder Department

19‧‧‧ valve body

20‧‧‧Compressed coil spring

21‧‧‧Baffle

22‧‧‧Extended section

23‧‧‧Protruding

24‧‧‧O-ring

30‧‧‧ spitting pipe

100,200‧‧‧ solenoid valve

111,211‧‧‧Inflow line

112,212‧‧‧Outflow line

113,213‧‧‧ valve port

116,216‧‧‧Electromagnetic coil

117,217‧‧‧Pistons

119,219‧‧‧ valve body

121,221‧‧ ‧ partition

B, C‧‧‧ field

Ag‧‧‧vertical axis

Ap‧‧‧Long axis

Θ‧‧‧ tilt angle

Fig. 1 is a schematic longitudinal cross-sectional view showing a solenoid valve of a beverage supply device according to a first embodiment of the present invention.

Fig. 2 is a schematic longitudinal cross-sectional view showing a solenoid valve of a beverage supply device according to a second embodiment of the present invention.

Fig. 3 is a schematic longitudinal cross-sectional view showing a solenoid valve of a beverage supply device according to a third embodiment of the present invention.

Fig. 4 is a schematic longitudinal cross-sectional view showing a solenoid valve of a beverage supply device according to a fourth embodiment of the present invention.

Figure 5 is a schematic longitudinal cross-sectional view showing a solenoid valve of a beverage supply device of the related art of the present invention.

Figure 6 is a schematic longitudinal cross-sectional view of a solenoid valve of a conventional beverage supply device.

Detailed description of the preferred embodiment

Before describing the solenoid valve of the beverage supply device according to the embodiment of the present invention, a solenoid valve of a beverage device constructed in accordance with the related art of the present invention will be described with reference to FIG. 5 of the schematic longitudinal cross-sectional view.

The solenoid valve 100 shown in FIG. 5 is intended to prevent the occurrence of residual water on the outflow line side of the conventional solenoid valve 200 as shown in FIG. 6, and includes: an inflow line 111 and an outflow tube. The path 112 is provided at a valve port 113 at one end of the outflow line 112, an electromagnetic coil 116, a piston 117, a valve body 119, and a partition plate 121. According to the solenoid valve 100, the valve port 113 is formed at one end of the outflow pipe 112, and the outflow pipe is extended to the lower side. Therefore, there is no case where residual water is generated on the outflow pipe side. Only, in In the solenoid valve 100, as soon as the water dispenser is used, the area indicated by A in Fig. 5 in the flow path above the valve body 119 generates trapped air with air accumulation, which is confirmed. Because trapped air can cause microbial growth here; and obstacles to heat transfer to the site to be sterilized, it is desirable to remove it.

Next, the solenoid valve 1 of the beverage supply device according to the first embodiment of the present invention will be described below with reference to Fig. 1 of the schematic longitudinal sectional view. In particular, the solenoid valve 1 is installed in a direction where the direction of the flow path of the water changes (curved portion of the flow path), thereby suppressing residual water or trapped air, and is particularly effective for water injection of a beverage supply device or the like.

In the first place, the "beverage supply device" in the present specification is used, and the device is a water for a water tank or the like, which is stored in a water tank or the like, and is supplied with a small amount of water by a user's water injection button or the like. Device. Also, the device is used on a table or on the floor. In the example of such a device, the water dispenser described in Patent Document 1 is taken as an example. In the present specification, the water dispenser is also taken as an example, and the invention is described as a beverage supply device.

Further, the present invention has technical features relating to a solenoid valve of a beverage supply device, and in the present specification, detailed descriptions and illustrations of a beverage supply device or a water dispenser are omitted.

In the first embodiment, the solenoid valve 1 is actuated as a water stop of the water dispenser, and the end portion of the water discharge pipe 30 of the water dispenser is attached. The solenoid valve 1 is a direct-acting type, and includes, in terms of main components, an inflow line 11 having an inflow port 11a at an end portion and extending substantially horizontally, and an outflow line 12 having a valve port 13 at the end portion. Having an outflow port 12a at the lower end and substantially perpendicular Extending downward; valve seat 14, surrounding valve port 13; valve housing 15; electromagnetic coil 16; piston 17, linearly moved by electromagnetic force of electromagnetic coil 16; cylinder portion 18 of valve housing 15, guiding piston 17 movement; 19, fixed at the front end of the piston 17, or integrally formed with the front end portion of the piston 17; the compression coil spring 20 is received in the cylinder portion 18, the end surface of the base end portion of the pushing piston 17, and the partition 21 extends Between the valve body 19 and the valve casing 15, the liquid flowing therethrough is isolated from the piston 17, and in the present embodiment, it is made of rubber. Further, the front end portion of the piston 17 is disposed below the base end portion on the opposite side.

Since the solenoid valve 1 is configured as described above, when the electromagnetic coil 16 is not energized, the valve body 19 is pushed to the valve seat 14 by the force generated by the spring 20, and the valve port 13 is closed. On the other hand, the user operates the water injection button of the water dispenser (not shown) to energize the electromagnetic coil 16 so that the generated electromagnetic force overcomes the force of the spring 20, and the piston 17 moves with the valve. The seat 14 lifts the valve body 19, thereby opening the valve port 13 and discharging the drinking water.

Further, as shown in FIG. 1, each of the constituent elements of the electromagnetic valve 1 except for the inflow line 11 and the outflow line 12 is inclined with respect to the vertical axis Ag indicating the direction of gravity or the horizontal axis. In the present embodiment, the piston 17 is such that its longitudinal axis Ap is inclined from the vertical axis Ag by about 25 in the counterclockwise direction in Fig. 1, i.e., the base end portion of the piston 17 is inclined away from the inflow opening 11a. 25°, likewise, the contact surface with the valve seat 14 of the valve body 19 is inclined by about 25° from the horizontal axis in the counterclockwise direction in FIG.

The spouting pipe 30 of the water dispenser of Fig. 1 extends the end portion of the water supply valve 1 horizontally. Therefore, the inflow line 11 is connected to the solenoid valve 1 of the spouting pipe 30, so that the contact surface of the piston 17 and the valve body 19, and the above contents Similarly, it is fixed to the water dispenser with respect to the vertical axis Ag or the horizontal axis in a state of being inclined by about 25° in the counterclockwise direction of FIG. 1 .

Further, the solenoid valve 1 of Fig. 1 is screwed to the male screw portion formed at the end portion of the inflow line 11 and the male screw portion at the distal end portion of the jetting pipe 30, and is connected and fixed to the jetting pipe 30. This connection is fixed, and it can be replaced by a wide variety of known tubular connectors or flanged connectors.

In the first embodiment, as shown in Fig. 1, the solenoid valve 1 is inclined and fixed, and the area on the left side of the valve body 19 is lower than the area on the right side. As a result, when the valve port 13 is closed, no trapped air is generated in the field of at least the left side of the valve body 19 of the water of the valve body 19. On the other hand, in the field on the right side of the valve body 19, there is a possibility that trapped air is generated. However, even if the trapped air occurs in the solenoid valve of Fig. 1, the occurrence is in the flow path of the water or is very close to the circulation path, so that each time the water circulates, it will be transported through the water without accumulating. And expand. Also, of course, there is no water remaining in the outflow line 12.

In the first embodiment, the inclination angle θ from the vertical axis Ag of the piston 17 of the solenoid valve 1 fixed to the spout pipe 30 is set at about 25°, but in the present invention, the inclination angle θ is 10° to Since 40° is an appropriate range, it is of course possible to implement an embodiment in which the inclination angle θ is 25°. In the present invention, the inclination angle θ, the shape and size of the constituent elements of the valve seat 14, the valve body 19, the inflow line 11, the outflow line 12, and the partition 21 of the solenoid valve 1 are in accordance with their mutual positions. Relationship, the optimum value is likely to change, it is understandable.

Next, the electromagnetic valve 2 of the beverage supply device of the second embodiment will be described with reference to Fig. 2 . The solenoid valve 2 of this embodiment differs from the solenoid valve 1 of the first embodiment in that the piston 17 has the enlarged diameter portion 22 and the valve body 19 has a conical projection 23 on the side in contact with the valve seat 14. However, the other portions are the same as those of the electromagnetic valve 1 of the first embodiment, and therefore only different portions will be described.

Similarly to the first embodiment, the piston 17 of the solenoid valve 2 shown in Fig. 2 is guided by the cylinder portion 18 of the valve casing 15, except that an enlarged diameter is formed between the front end portion and the base end portion. The diameter portion 22. The diameter-enlarged portion 22 is configured to reduce the moving speed of the piston 17, that is, to cooperate with the air in the cylinder portion to function as an air damper, and to make the outer diameter slightly smaller than the inner diameter of the cylinder portion 18. If the moving speed of the piston 17 is lowered, particularly when the valve is closed, that is, the piston 17 is pushed and moved by the spring 20, when the valve body 19 closes the valve seat 14, the extrusion from the outlet pipe 12 is reduced. The speed of the water thus prevents the liquid splashing to the user.

Further, the conical projection 23 formed in the valve body 19 enters the valve opening 13 from the front end when the valve is closed. Since the conical projection 23 is provided, the direction in which the water is pressed out when the valve is closed can be changed, and the amount of water to be pressed can be reduced, and as a result, splashing of the liquid can be prevented.

Next, a solenoid valve 3 of the beverage supply device according to the third embodiment will be described with reference to Fig. 3 . The solenoid valve 3 of this embodiment differs from the solenoid valve 1 of the first embodiment in that a viscous fluid such as oil is sealed in the cylinder portion 18 to exhibit the function of the oil damper. However, the other portions are the same as those of the electromagnetic valve 1 of the first embodiment, and therefore only different portions will be described.

The solenoid valve 3 of the third embodiment is for viscous fluid such as oil. The cylinder portion 18 is enclosed, and an O-ring 24 is disposed near the outlet of the cylinder portion 18. Further, the piston 17 has the enlarged diameter portion 22 as in the second embodiment. In the enlarged diameter portion 22 of the piston 17 of the third embodiment, the gap between the cylinder portion 18 and the size of the second embodiment is considered to be larger in consideration of the viscosity of the oil.

In the solenoid valve 3 of the third embodiment, when the valve is closed, the oil existing in the cylinder chamber below the enlarged diameter portion 22 of the piston 17 passes between the piston 17 and the lower portion of FIG. The viscous impedance in the cylinder chamber on the upper side of the enlarged diameter portion 22 decelerates the moving speed of the piston 17. As a result, as in the case of the second embodiment, the speed of the water that is squeezed out from the outflow line 12 is lowered, so that the liquid splash to the user can be prevented.

Next, a solenoid valve 4 of the beverage supply device according to the fourth embodiment will be described with reference to Fig. 4 . The solenoid valve 4 is different from the above-described embodiment and is not in the form of a partition. However, the other points are basically the same as those of the solenoid valve 1 of the first embodiment.

In the fourth embodiment, the solenoid valve 4 also inclines the long axis Ap of the piston 17 in the counterclockwise direction of FIG. 4 from the vertical axis Ag showing the direction of gravity by about 25°, and is connected to the spout of the water dispenser. The water line 30 is therefore lower in the field from the left side of the valve body 19 than in the field on the right side. As a result, when the valve is closed, no air stagnation occurs in the field on the left side of Fig. 4 of the valve body 19 of water remaining around the valve body 19. On the other hand, there is a possibility that air is trapped in the field on the right side of the valve body 19. However, the air stays, even if the solenoid valve of Fig. 4 occurs, the occurrence is close to the flow path of the water, and therefore, it is carried away every time the water flows, and does not accumulate and expand.

Although not shown in the drawings, the embodiment in which the diameter of the inflow line 11 of the electromagnetic valve 4 of the fourth embodiment is enlarged upward, thereby suppressing the occurrence of air retention in the right side of the valve body 19 is also possible.

Although not shown in the drawings, in order to suppress the occurrence of trapped air in the right side of the valve body 19 of the solenoid valve 4 of the fourth embodiment, the thickness of the valve casing 15 is increased to the inside to fill the gap in the field. Forms may also be implemented.

Further, the solenoid valve 4 of the fourth embodiment is described in the second embodiment, that is, the enlarged diameter portion 22 of the piston 17 and the conical projections 23 of the valve body 19 and the second embodiment; 3 Description of the Embodiments The features of the so-called oil damper function may be implemented in a separate manner or in combination with other embodiments.

1‧‧‧ solenoid valve

11‧‧‧Inflow line

11a‧‧‧Inlet

12‧‧‧Outflow line

12a‧‧‧Exit

13‧‧‧ valve port

14‧‧‧ valve seat

15‧‧‧ valve housing

16‧‧‧Electromagnetic coil

17‧‧‧Piston

18‧‧‧Cylinder Department

19‧‧‧ valve body

20‧‧‧Compressed coil spring

21‧‧‧Baffle

30‧‧‧ spitting pipe

Ag‧‧‧vertical axis

Ap‧‧‧Long axis

Θ‧‧‧ tilt angle

Claims (8)

A solenoid valve for a beverage supply device, comprising: a piston linearly moving by an electromagnetic force of the electromagnetic coil; and a valve body disposed at a front end portion of the piston and pushed by the valve seat to thereby lock the valve port; In the piston of the electromagnetic valve in the beverage supply device, the front end portion is disposed below the base end portion on the opposite side, and the base end portion is opposed to the inflow port of the electromagnetic valve. Tilt on the vertical axis. The solenoid valve of the beverage supply device of claim 1, comprising a cylinder portion for guiding movement of the piston, wherein the piston has an enlarged diameter portion, and the enlarged diameter portion functions to be fitted to the cylinder portion, thereby lowering the piston Moving speed. The electromagnetic valve of the beverage supply device of claim 2, further comprising a viscous fluid sealed in a gap between the cylinder portion and the piston, and cooperating with the enlarged diameter portion to reduce movement of the piston speed. The solenoid valve of the beverage supply device according to any one of claims 1 to 3, wherein the valve body has a conical projection at a front end thereof. A solenoid valve for a beverage supply device according to any one of claims 1 to 3, wherein said solenoid valve is a diaphragm type valve having a partition for isolating liquid flowing therethrough from said piston. A solenoid valve for a beverage supply device, comprising: The piston is linearly moved by the electromagnetic force of the electromagnetic coil; the valve body is disposed at the front end portion of the piston, is pushed by the valve seat to thereby lock the valve port; and the partition plate is configured to discharge the liquid flowing in the electromagnetic valve The piston is isolated; the piston of the solenoid valve fixed in the beverage supply device has the front end portion disposed below the base end portion on the opposite side, and the partition plate is inclined with respect to the horizontal line so as to be The central axis of the piston, the portion of the partition adjacent to the side of the inflow port of the solenoid valve, is located above the portion of the partition farther from the side. A beverage supply device comprising any one of the electromagnetic valves of the beverage supply device according to any one of claims 1 to 3, wherein the electromagnetic valve is provided in a curved portion of the flow path. The beverage supply device of claim 7, wherein the solenoid valve is used for controlling external water injection.