JPH06241438A - Gas combustion controller - Google Patents

Abstract

PURPOSE:To provide a gas combustion controller in which thermal power can be switched in multiple stages even at the time of an automatic temperature regulation and which has small power combustion. CONSTITUTION:A plurality of gas flow rate control ports 52 are provided on an upper surface of a gas flow rate controller 49, which is coupled to a coupler 70 in which its rotation is controlled, a driver 38 is mounted at a center on an outer periphery of a shaft guide 45 while passing a shift pin 48 of the coupler 70 through a shaft slide groove 40 of the driver 38, the driver 38 is rotated by a motor-driven driver 31 using a motor 33, and the driver 38 is always pressed to a cock body 42 by a mounting plate 41 and a spring 55. Accordingly, the controller 39 is linearly driven merely by driving the driver 38 by the motor 33 to control all switching of gas and regulating of gas flow rate. Since power is consumed only at the time of driving the motor 33, power consumption can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas combustion control device for use in a combustion instrument that burns gas as fuel.

[0002]

2. Description of the Related Art A conventional combustion device of this type is shown in FIGS.
Shown in. FIG. 8 is a front perspective view of a conventional gas cooker, FIG. 9 is a schematic view of the structure of a conventional stove, and FIG. 10 is an adjustment diagram of a gas flow rate during automatic temperature control in a conventional example.

As shown in FIG. 8, a conventional gas cooker includes a stove burner 1, a temperature sensor 2, a heater 3, an ignition / extinguishing button 4, a heat power adjusting lever 5, a grill portion 6, and an automatic temperature control panel 7. It is configured. FIG. 9 is a diagram showing the outline of the structure of the stove. When the ignition / extinguishing button 4 is pushed in, the ignition switch 8 is turned on, and the solenoid valve 10 for temperature control and the solenoid valve 11 for temperature control are energized via the control board 20 to be in the open state. Becomes The gas flows from the gas inlet 9 through the main solenoid valve 10, the bypass passage 12 and the bypass nozzle 14, and also the temperature regulating solenoid valve 11 and the main passage 13, and the manual valve 1
5, the heat power adjusting needle 16, the stove pipe 17, and the nozzle receiver 18, and the maximum flow rate is regulated by the main nozzle 19 to be supplied to the burner 1. At the same time, the igniter 21 is turned on via the control board 20, the spark plug 22 is discharged, the burner 1 starts combustion, the thermocouple 23 receives heat from the burner 1, transmits thermoelectromotive force to the control board 20, and continues combustion. It is configured to let.

In the case of adjusting the heat power in the above structure, the heat quantity adjusting lever 5 is operated to move the heat power adjusting needle 16 to adjust the combustion amount, or the temperature adjusting solenoid valve 11 is turned on at the time of automatic temperature adjusting, By turning it off, the combustion amount is selected to be regulated by the bypass nozzle 14 or the main nozzle 19. FIG. 10 shows gas flow rate adjustment during automatic temperature control. In FIG. 10, the horizontal axis represents time and the vertical axis represents gas flow rate.
In 0, two patterns of gas flow rate adjustment are shown.
In the above-mentioned configuration, when controlling by changing the gas amount by automatic temperature control, the temperature control solenoid valve 11 in FIG. 8 is turned on (high flame combustion) and off (light flame combustion) for a certain time as shown in FIG. 24 and the solenoid valve OFF time 25 are combined to adjust the gas flow rate within the total control time 26 (hatched portions of pattern A and pattern B).

[0005]

However, in the above-mentioned conventional configuration, there is a large difference between the maximum gas flow rate regulated by the main nozzle 19 and the minimum gas flow rate during automatic temperature regulation regulated by the bypass nozzle 14. Since a rapid change in the gas amount occurs when the power of the temperature control solenoid valve 11 is switched between ON and OFF, a gas that can be manually squeezed by the power adjustment needle 16 to prevent fire extinguishing that burns out the flame of the burner 1 is generated. The gas flow rate regulated by the bypass nozzle 14 has to be increased by about 10 to 20% than the flow rate, and there is a problem that the thermal power throttle cannot be fully throttled during automatic temperature control. In addition, when the gas flow rate is adjusted by automatic temperature control, there is a problem in that a strong flame-a low flame combustion is generated, so that there is a rapid change in the flame and the user feels uneasy. Further, during use of the gas cooker, it is necessary to always energize in order to keep one or more solenoid valves open, and there is a problem that power consumption is large. The present invention is to solve the above problems, in the combustion control of gas combustion equipment, even during automatic temperature control, the burner can sufficiently reduce the heat power to a gas flow rate that does not extinguish the fire, and also during high temperature during automatic temperature control. Since the amount of gas can be changed without performing low-temperature combustion, the purpose is to allow combustion control without causing concern to the user and with low power consumption.

[0006]

As a first means for achieving the above object, the present invention has a gas flow rate having a linearly movable gas flow rate regulator for regulating the gas flow rate in combustion control of a gas combustion appliance. A restricting portion, a connecting body detachably connected to the gas flow restricting body, a rotational drive type driving body that is connected to the connecting body and drives the gas flow restricting body, and is mounted on the gas flow restricting section, A drive unit having a drive unit and a spring for urging the drive unit in the mounting direction with respect to the gas flow rate control unit, and when the drive unit is mounted on the gas flow rate control unit, the drive unit in the drive unit is The structure is characterized in that the gas flow rate regulating unit is constantly energized.

As a second means, in the combustion control of a gas combustion appliance, a gas flow rate control unit having a linearly movable gas flow rate control unit for controlling the gas flow rate is detachably connected to the gas flow rate control unit. It is composed of an electric drive unit having a connecting body and a rotary drive type driving body which is connected to the connecting body and drives the gas flow rate regulating body, and the drive body has an external gear on the outer periphery, and the gas flow rate regulating section is provided. The backlash of the external gear is set to a large value in order to absorb the mounting backlash of the driving body when the driving body is mounted.

As a third means, in the combustion control of a gas combustion appliance, a heat power setting means for setting a heat power, a gas flow rate control portion having a linearly movable gas flow rate control means for controlling the gas flow rate, A connector that is detachably connected to the gas flow restricting body, an electric drive unit that is connected to the connecting body and has a rotary drive type driving body that drives the gas flow restricting body, and the position of the gas flow restricting body is detected. The position detection means is concentrically joined to the driving body, and the electric drive unit is controlled by the magnitude of change in the set amount by the thermal power setting means and the detection position of the position detection means. The configuration is characterized by variable drive speed.

As a fourth means, in the combustion control of a gas combustion appliance, a gas flow rate control unit having a linearly movable gas flow rate control unit for controlling the gas flow rate is detachably connected to the gas flow rate control unit. A coupling body, a rotary drive type driving body coupled to the coupling body to drive the gas flow rate regulating body, and a mounting direction of the driving body and the driving body mounted on the gas flow rate regulating section with respect to the gas flow rate regulating section. And a drive portion having a spring for urging the gas flow restricting body into a substantially rhombic shape, and when the drive portion is mounted on the gas flow restricting portion, the drive member inside the drive portion Is always urged by the gas flow rate control unit.

As a fifth means, in the combustion control of a gas combustion appliance, a gas flow rate control unit having a rotatably movable gas flow rate control unit for controlling the gas flow rate, and the gas flow rate control unit connected to the gas flow rate control unit. The drive body is composed of an electric drive section having a rotary drive type drive body for driving the regulation body, and the drive body has an external gear on the outer periphery thereof, and the backlash of the external gear is set to be large, and the gas flow rate regulation section is driven by the drive. When the body is attached, the rotational axis of the driving body is adapted to the rotational axis of the gas flow rate regulating body.

[0011]

According to the present invention, when the drive unit is mounted on the gas flow control unit, the drive unit for driving the gas flow control unit of the gas flow control unit is always urged by the gas flow control unit. By doing so, the movement in the moving direction of the gas flow rate regulating body of the driving body that manages the movement amount of the gas flow rate regulating body that regulates the gas amount regulation is always suppressed, so that the drive unit and the gas flow rate regulating unit are controlled. Assembling becomes easy because no adjustment is required in assembling. Further, only the rotational driving of the driving body can control all operations such as gas outflow, closing, and gas amount switching. Further, since the gas amount adjustment depends on the moving amount of the gas flow rate regulator, the gas amount is prevented from changing abruptly, so that the burner is less likely to be extinguished.

Further, an electric drive unit having a rotary drive type drive unit is provided, and the drive unit has a substantially cylindrical shape and an external gear on the outer periphery thereof, and the backlash of the external gear is set to a large value to serve as a gas flow rate regulating unit. By absorbing the backlash around the rotation axis of the drive body when the drive body is mounted by the gear, assembly is easy,
In addition, failures such as biting of gears due to displacement of the rotational axis of the driving body are reduced. Further, the electric power required for closing, flowing out, and switching the gas flow rate of the gas is required only when the electric drive unit is driven, so that the power consumption can be reduced.

Further, the position detecting means is joined on the concentric circle of the driving body, and the driving speed of the electric drive portion is variable according to the detected position of the position detecting means and the magnitude of the set amount of thermal power. The rotation angle of the driving body can be accurately measured, and the mounting can be simplified and the flow rate can be controlled by predetermining the correlation between the rotation angle of the driving body and the sliding amount of the gas flow rate regulating body. is there. Also, when adjusting the gas amount, the firepower adjustment speed is fast from the user's point of view at the beginning, giving the impression of being made rapidly, giving a sense of satisfaction, and making fine adjustments slowly, it is possible to adjust the position. It is easy to prevent backfire and the like due to a rapid change in the combustion amount.

Further, since the shape of the gas passage port of the gas flow regulating body is substantially rhombic and the linear movement of the driving body is suppressed when the driving body is mounted on the gas flow regulating portion, the gas flow regulating body of the gas flow regulating body is suppressed. Compared to the case where the gas passage is circular, the degree of freedom in combining the arrangement of the gas flow regulating ports that regulates the gas flow is higher, so the gas flow regulating unit can be manufactured compactly and the desired gas flow can be controlled freely. It has become possible to set to.

Further, the driving body is directly joined to the rotary movable type gas flow regulating body, the driving body is cylindrical and has an external gear on the outer periphery, and the backlash of the external gear is set to a large value to form a gas flow regulating portion. Since the rotation axis of the drive body is adapted to the rotation axis of the gas flow regulating body when the drive body is mounted, no adjustment is required in assembly of the electric drive unit and the gas flow regulating unit. It is easy to assemble, and there is no biting or the like when the gas flow restrictor rotates. Moreover, since the driving body is directly joined to the gas flow rate regulating body, the number of parts can be reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The parts having the same functions as the conventional ones are given the same numbers and their explanations are omitted.

1 to 8, FIG. 1 is a schematic structural view of a gas flow rate regulating portion, a position detecting means and an electric drive portion in one embodiment of the present invention, and FIG. 2 is a gas cooker in one embodiment of the present invention. FIG. 3 is a schematic view of the structure of a stove according to an embodiment of the present invention, and FIG. 4 is a shape of a shaft slide groove of a driving member and a gas flow restricting body according to an embodiment of the present invention.
FIG. 5 is a correlation diagram of the positions of the gas outlet and the gas flow regulating port and the flow characteristic, and FIG. 5 shows the shape of the shaft slide groove of the driver and the gas flow regulating body, the gas outlet, and the gas flow regulating port in another embodiment of the present invention. 6 is a correlation diagram of the position and the flow rate characteristic, FIG. 6 is a schematic diagram of the structure of the gas flow rate regulating unit, the position detecting means and the electric drive unit in another embodiment of the present invention, and FIG. 7 is the rotational drive in the other embodiment of the present invention. The top view of a type | formula gas flow control body is shown.

As shown in FIG. 2, the gas cooker of the present invention is
It comprises a stove burner 1, a temperature sensor 2, and the like 3, an ignition / fire extinguishing switch 28, a heat power adjusting switch 29, a grill portion 6, and an automatic temperature control operation panel 7. FIG. 3 is a diagram showing the outline of the structure of the stove. When the ignition / extinguishing switch 28 of the heating power setting means 27 is pushed, the electric drive unit 31 is driven via the control board 20, and the position detecting means 32 drives the driving means. While detecting the rotation angle, the gas passes through the gas flow rate regulating unit 30, the stove pipe 17, the nozzle receiver 18, and the maximum flow rate is regulated by the main nozzle 19 to be supplied to the burner 1. At the same time, the igniter 21 is turned on via the control board 20.
In this state, the spark plug 22 discharges, the burner 1 starts combustion, the thermocouple 23 receives heat from the burner 1, transmits thermoelectromotive force to the control board 20, and continues combustion.

FIG. 1 shows a schematic structure of the gas flow rate regulating unit 30, the electric drive unit 31, and the position detecting means 32. In the present embodiment, the electric drive unit 31 includes a motor 33, a motor worm 35 joined to the motor 33, a worm wheel 36 rotatably joined to the mounting plate 41, and an external gear 37 formed coaxially with the worm wheel 36. When the motor 33 is energized via the control board 20 of FIG. 3, the motor 33 is rotationally driven, and the rotation is transmitted to the motor worm 35, the worm wheel 36, and the external gear 37, and coaxially with the driving body 38. Is transmitted to the external gear 69 formed by taking a large backlash of the gear,
8 is driven to rotate. The drive speed of the electric drive unit 31 is also variable by changing the voltage applied to the motor 33 from the control board 20 of FIG.

The position detecting means 32 joins the D-cut shaft 39 formed on the driving body 38 to the encoder 34 joined to the mounting plate 41, and drives the driving body 3 through the control board 20 of FIG.
8 rotation angles are measured.

The structure of the gas flow rate control unit 30 will be described below. The gas flow rate control unit 30 includes a substantially concave box-shaped cock body 42, a connecting body 70, a substantially cylindrical driving body 38, a mounting plate 41, springs 54 and 55, a pressing plate 53, and a substantially rectangular parallelepiped shape. The gas flow rate restricting body 49 and the flow rate restricting plate 51 are mainly configured. A gas inlet 56 and a gas outlet 43 are formed on the concave lower surface of the cock body 42, and a shaft passage 44 is formed on the concave side surface.
4, a shaft guide 45 is formed in a substantially cylindrical shape, and a slit groove 46 is formed on the outer circumference of the shaft guide 45 in the axial direction.
Is formed. The connecting body 70 includes the main shaft 47,
The main shaft 47 is composed of a shaft pin 48 that is coupled to the vicinity of one end of the main shaft 47 so as to be orthogonal to each other in the axial direction. Have penetrated. The gas flow restrictor 49 includes a gas passage port 50 having a circular cross section in the axial direction of the main shaft 47.
The gas flow restrictor 49 is detachably joined to the main shaft 47 inside the concave shape of the cock body 42. A substantially stepped shaft slide groove 40 is formed on the outer periphery of the driving body 38.
The drive body 38 is detachably joined with the outer circumference of the shaft guide 45 as the central axis. A plurality of gas flow rate control ports 52 (a) to 52 (e) are formed in the gas flow rate control plate 51, and the gas flow rate control plate 51 is detachably joined to the upper surface of the gas flow rate control body 49. A ridge 54 is installed on the upper portion of the gas flow rate regulating plate 51, and the ridge 54 is compressed by a pressing plate 53 which covers the upper surface of the concave shape of the cock body 42, so that the flow rate regulating plate 5 is constantly maintained.
1 is pressed against the gas flow rate regulator 49. The mounting plate 41 to which the electric drive unit 31 and the encoder 34 are joined is joined to the shaft guide 45 side of the cock body 42.
A spring 55 is installed between the driving body 38 and the encoder 34, and the driving body 38 is constantly pressed against the cock body 42 by the pushing force of the spring 55. Inside the cylinder of the shaft guide 45, a seal packing 59 and a packing presser 58 for preventing gas leakage at the joint with the main shaft 47 are inserted, and a shaft slide groove 40 and a shaft pin 48 are inserted between the packing presser 58 and the connecting body 70. 5 to eliminate backlash with
6 is provided. In FIG. 1, reference numerals 60 and 61 are seal packings for preventing gas leakage at the joints of the components.

With the above structure, the connecting body 70 is prevented from rotating by the shaft pin 48 and the slit groove 46, and the driving body 38 is pushed by the spring 55 to push the main shaft 47.
Since the movement of the driving body 38 is suppressed, the connecting body 70 and the gas flow rate regulating body 49 are moved relative to the shape of the shaft slide groove 40 by the rotation of the driving body 38.
Slide in the axial direction of. The flow rate of the gas flowing in from the gas inflow port 56 of the cock body 42 is regulated by the gas flow rate regulating port 52 of the gas flow rate regulating plate 51, passes through the gas passage port 50 of the gas flow rate regulating body 49, and passes through the gas outflow port 43 of the cock body 42. And flows out to the stove pipe 17 in FIG. When the gas is closed, the gas flow restrictor 49 slides to close the gas outlet 43 and close the gas.

Switching of the gas flow rate in the above configuration will be described. FIG. 4 is a correlation diagram of the shape of the shaft slide groove of the driving body, the positions of the gas flow rate restricting body, the gas outlet, and the gas flow rate restricting port, and the flow rate characteristics in one embodiment of the present invention. 4 is a diagram showing the shape of the shaft slide groove 40 of the driving body 38, the horizontal axis is the rotation angle of the driving body 38,
The vertical axis represents the height of the shaft slide groove 40. Since the shaft slide groove 40 is formed in a substantially stepped shape, the flow rate between the flow rate fixed areas 62 (a) to 62 (f) and the flow rate fixed area 62 in which the connecting body 70 does not slide even if the drive body 38 rotates. It has switching areas 63 (a) to 63 (e). The middle part of FIG. 6 shows the positional correlation between the gas flow rate regulator 49, the gas flow outlet 43, and the gas flow rate control port 52 corresponding to the fixed flow rate regions 62 (a) to 62 (f). A gas flow rate regulating plate 51 and gas flow rate regulating ports 52 (a) to 52 (e) are shown in the middle right, and only the gas flow rate regulating port 52 through which gas passes is shown in each drawing. The lower diagram of FIG. 4 is a diagram showing a characteristic diagram of gas flow rate adjustment in the above configuration, in which the horizontal axis represents the rotation angle of the driving body 38 and the vertical axis represents the gas flow rate. In the above configuration,
In order to switch the thermal power, when the thermal power is set by the thermal power adjustment switch 29 of the thermal power setting means 27, in the present embodiment, the correlation between the rotation angle of the driving body 38 and the sliding amount of the gas flow rate regulating body 49 is predetermined, By the position detecting means 32,
When the rotation angle of the driving body 38 is measured and the position of the gas flow rate regulating body 49 is confirmed while the driving body 38 is rotated by the electric drive unit 31 to the fixed flow rate area 62 corresponding to the set thermal power, the shaft pin 48 Since the rotation of the connecting body 70 is suppressed by the slit groove 46 and the slit groove 46, the connecting body 70 and the gas flow rate restricting body 49 slide in the axial direction of the main shaft 47 by the shaft pin 48 passing through the shaft slide groove 40, and the passage of gas. The gas flow rate control port 52 to be switched is switched, and the gas flow rate to be supplied to the stove is set in 5 steps (maximum gas flow rate 68, medium fire gas flow rate 67, weak-strong gas flow rate 66, weak-medium gas flow rate 65, weak-weak gas). Flow rate 64). For example, when the maximum gas flow rate 68 is set, the gas flow rate restriction port 52
Gas passes through (a) -52 (e), weak-medium gas flow 6
When setting 5, the gas flow rate restriction port that allows gas to pass through is 52
Only (d) and 52 (e) are available.

In the present embodiment, with the above-described structure, all the operations such as the outflow of gas, the closing, and the switching of the gas amount can be controlled only by driving the driving body 38 by the motor 33. Therefore, the power consumption required is only used when the motor 33 is driven when the gas is opened and closed and when the gas flow rate is adjusted, so that the power consumption can be reduced.

Further, in the present embodiment, since the gas flow rate control plate 51 only needs to be replaced at the time of gas type replacement with the above-described configuration, gas type replacement can be easily performed.

Further, in this embodiment, the driving speed of the driving body 38 is as low as several tens of revolutions per minute, and the driving frequency is only required when the gas is opened / closed and the gas amount is adjusted. The total driving time per day is only a few minutes, which is very short. If the backlash is set to a large value in a normal gear train configuration, noise during high-speed driving becomes large and problems such as damage due to abrasion due to rattling occur, but as described above, in this embodiment, the total amount during actual use is increased. Since the driving time is short, the backlash of the external gear 69 provided on the driving body 38 is intentionally set to a large value, and the backlash around the rotation axis of the driving body 38 when the driving body 38 is attached to the gas flow rate regulating unit 30 is reduced. It has been found that the gears can absorb the play on the fitting of the shaft guide 45 and the driving body 38 and the play of the mounting plate 41 having the electric drive unit 31 and the cock body 42 by absorbing the gears. Therefore, by using this configuration, the assembly is easy and the driving body 3 is
The failure such as the gear biting due to the deviation of the rotational axis of No. 8 is reduced.

Further, in this embodiment, the driving body 38 is constantly pressed against the cock body 42 by the pushing force of the spring 55, and the shaft slide groove 40 of the driving body 38 is formed into a substantially step shape so that the driving body 38 is connected to the rotation of the coupling body. By having the flow rate fixed area 62 in which 70 does not slide, the set flow rate can be stably obtained even if there are variations in the detection accuracy of the rotation angle of the encoder 34, variations in the rotation stop of the motor 33, and the like.

Further, in this embodiment, as shown in FIG. 4, flow rate switching regions 63 (a) to 63 (a) -6 for switching the gas flow rate.
In the case of 3 (e), two or more adjacent gas flow rate control ports 5
Since 2 is switched while being opened at the same time, a sudden change in gas amount does not occur, so the weak-weak gas flow rate 64 can be reduced to a gas flow rate at which the burner does not extinguish fire or backfire.

Further, in the present embodiment, by varying the voltage for driving the motor 33 via the control board 20, the range of thermal power adjustment by the thermal power setting means 27 is changed from the maximum gas flow rate 68 to the weak-weak gas flow rate 64. Even if it is large, the encoder 34 measures the rotation angle of the driving body 38 from the maximum gas flow rate 68 to the weak-medium gas flow rate 65 while increasing the voltage applied to the motor 33 to increase the rotation speed of the driving body 38. , Weak-medium gas flow rate 65 to weak-weak gas flow rate 6
During the period up to 4, the voltage applied to the motor 33 is lowered and the rotation speed of the driving body 38 is controlled to be slow, so that the apparent gas flow rate can be switched quickly from the user's point of view, and delicate adjustment can be performed slowly. Therefore, there is no risk of fire extinguishing of the burner or backfire.

In this embodiment, the shaft guide 45 is formed integrally with the cock body 42. However, the same effect can be obtained by forming the shaft guide as a separate part and joining the shaft guide to the shaft passage opening of the cock body. can get.

In this embodiment, the drive means 32 is a motor 33, a motor worm 35 joined to the motor 33, a worm wheel 36 and an external gear 3 are coaxially arranged.
Rotation is transmitted to the external gear 69 of the driving body 38 by the gear shaft having 7, but the rotation of the motor 33 is changed by the combination of other gear trains.
The same effect can be obtained by transmitting to.

In this embodiment, the gas flow rate is switched to five stages. However, the number of gas flow rate switching stages is increased by increasing the number of gas flow rate control ports and the number of fixed flow rate regions of the shaft slide groove of the driver. It is possible to increase.

In this embodiment, the hole located below the gas flow restricting body 49 is used as the gas outlet 43, but the gas flow restricting plate 51 may be configured to have the gas inflow conversely.
The same effect can be obtained by setting the specifications such that the spring 54 that holds down the pressure does not contract due to the gas pressure.

Next, another embodiment of the linearly movable gas flow rate regulating member and the gas flow rate regulating port will be described with reference to FIGS. FIG. 5 shows the shape of the shaft slide groove of the driving body, the gas flow regulating body, the gas outlet, and
The correlation diagram of the position of a gas flow control port and a flow characteristic is shown. Figure 4
In, the weak-medium gas flow rate 65 is the gas flow rate regulation port 52.
Gas flow rate passing through (d) and gas flow rate restriction port 52 (e)
It is the sum of the gas flow rate passing through. For a gas having a high calorific value per volume, such as LP gas, it is 0. Although a control port on the order of several mm is required, due to the processing of the gas flow control plate 51, the gas flow control port 52
The minimum caliber of is limited. About φ0.34mm-300kc
The lower limit is about al / h. In FIG. 4, weak-weak gas flow rate 6
When 4 is set to 400 kcal / h, the weak-medium gas flow rate 65 is about 700 kcal / h. When it is desired to set the weak-medium gas flow rate 65 to 500 to 600 kcal / h for reasons such as heating, it is possible if the weak-medium gas flow rate 65 is regulated by the gas flow rate regulation port 52 (d) alone. Is the gas flow rate control port 5
2 (c) and the restriction hole 52 (d) pitch, and the restriction hole 52
Unless the pitch between (d) and the restriction hole 52 (e) is separated by the diameter of the gas passage port, the gas flow rates of the weak-weak gas flow rate 64 and the weak-strong gas flow rate 66 become too large. Therefore, when the pitch is separated by the diameter, the slide stroke of the connecting body 70, the length of the gas flow rate regulating body 49, and the like increase, and the size of the gas flow rate regulating unit 30 itself increases.

Therefore, in another embodiment of the present invention, as shown in FIG. 5, the shape of the gas passage port 50 of the gas flow regulating body 49 is substantially rhombic, and the gas flow regulating port 52 (d) is the other gas flow regulating port 52. It is configured to be displaced in the orthogonal direction from the line connecting the centers of (a) to (c) and (e). With the above configuration, the weak-medium gas flow rate 65 is regulated by the gas flow rate regulation port 52 (d) alone as shown in FIG.
The pitch between (c) and the restriction hole 52 (d), and the restriction hole 52
Since the pitch between (d) and the restriction hole 52 (e) is shorter than that in the case where the shape of the gas passage port is circular, the slide stroke, the length of the gas flow rate restricting body 49, etc. do not become large, and the gas The flow rate control unit 30 itself can be manufactured compactly,
In addition, the desired gas flow rate can be set freely.

In the other embodiment, the gas passage port 50 is used.
The shape of the gas passage port 50 is substantially rhombic, but the same effect can be obtained even if the shape of the gas passage port 50 is substantially elliptical with the movable direction of the gas flow rate regulating body 49 having a short diameter.

Next, another embodiment of the gas flow rate regulating portion will be described with reference to FIGS. FIG. 6 is a schematic structural view of a gas flow rate regulating unit, a position detecting means and an electric drive unit in another embodiment of the present invention, and FIG. 7 is a top view of a rotary drive type gas flow rate regulating body in another embodiment of the present invention. Indicates. In FIG. 6, the electric drive unit 31 and the position detection means 32 have the same configuration as that of the embodiment of FIG. The gas flow rate control unit 30 is configured as follows. As shown in FIG. 7, a plurality of gas passage openings 50 and gas outflow grooves 73 are provided in a substantially conical gas flow restricting body 49, and a cock body having a recess cut at the same taper angle as the conical shape of the gas flow restricting body 49. 42 is joined to the gas flow restricting body 49, the cock body 42 is provided with a plurality of gas outlets 43 facing the respective gas passage ports 50, and the gas flow restricting plate 51 is provided above the gas outlets 43. A plurality of gas flow control ports 52 facing the respective gas flow outlets 43 are formed in the gas flow control plate 51, and a cock body lid 71 is joined to the cock body 42 at the upper part of the gas flow control plate 51 to attach the cock body lid 71 to the cock body lid 71. Hakoro pipe mounting part 7
2 is formed, and the gas flow rate control body 49 is directly joined to the drive body 38. In FIG. 6, reference numerals 60 and 61 are seal packings for preventing gas leakage at the joints of the components. With the above configuration, the gas flows in through the gas inlet 56, passes through the gas outlet 50 of the gas flow regulator 49 and the gas outlet 43 of the cock body 42, and the flow rate is regulated by the gas flow regulator 52. From the attachment 72 to the stove pipe 1 of FIG.
Spilled to 7. The gas passage port 50 and the gas outlet port 43 penetrate, or the gas outlet groove 7 is formed on the lower surface of the gas outlet port 43.
When 3 are opposed to each other, the gas flows out from each gas outlet 43, and when the gas outlet 43 is closed by the conical taper surface of the gas flow regulating body 49, the gas is closed. As shown in FIG. 7, since the gas outflow grooves 73 corresponding to the respective gas passage ports 50 have different angles around the rotation axis formed therein, when the gas flow restrictor 49 is rotated, the gas outflow port through which the gas passes. 43
By sequentially switching the gas flow rate control port 52 and the gas flow rate control port 52, the gas is opened / closed and the flow rate is switched.

In this embodiment, the external gear 69 provided on the driving body 38 has a large backlash so that when the driving body 38 is mounted on the gas flow rate regulating portion 30, the rotational axis of the driving body 38 is regulated to the gas flow rate. By adopting a configuration in which the body 49 is adapted to the rotation axis, the electric drive unit 31 and the cock body 42 do not require adjustment and adjustment, and can be easily assembled. No bite, etc. Further, since the driving body 38 is directly joined to the gas flow rate regulating body 49, a connecting body for connecting the driving body and the gas flow rate regulating body becomes unnecessary, and the number of parts can be reduced.

[0039]

As described above, according to the cooker using the gas combustion control device of the present invention, the following effects can be obtained.

(1) When the drive unit is attached to the gas flow control unit, the drive unit for driving the gas flow control unit of the gas flow control unit is always biased by the gas flow control unit. Since the movement in the moving direction of the gas flow regulating body of the driving body that manages the moving amount of the gas flow regulating body that regulates the gas amount regulation is always suppressed, adjustment is made in the assembly of the driving unit and the gas flow regulating unit. Since it is unnecessary, assembly becomes easy.

(2) Only the rotational driving of the driving body can control all the operations of gas outflow, shutoff, and gas amount switching.

(3) Since the adjustment of the gas amount depends on the moving amount of the gas flow rate regulating member, it is possible to prevent the gas amount from changing abruptly, so that the burner is less likely to be extinguished.

(4) An electric drive unit having a rotary drive type drive unit is provided, and the drive unit has a substantially cylindrical shape and an external gear on the outer periphery, and the backlash of the external gear is set to a large value to regulate the gas flow rate. By absorbing the backlash around the rotation axis of the drive body when the drive body is mounted on the part with a gear, assembly is easy,
In addition, failures such as biting of gears due to displacement of the rotational axis of the driving body are reduced.

(5) Electric power required for closing, flowing out, and switching the gas flow rate is required only when driving the electric drive unit, so that power consumption can be reduced.

(6) Since the position detecting means is joined on the concentric circle of the driving body, and the driving speed of the electric drive portion is variable depending on the detected position of the position detecting means and the magnitude of the set amount of thermal power. The rotation angle of the driving body can be accurately measured, and the correlation between the rotation angle of the driving body and the slide amount of the flow rate regulating body is determined in advance, so that the mounting can be simplified and the flow rate can be controlled. .

(7) When adjusting the gas amount, from the user's point of view, the thermal power adjustment speed is fast in the beginning, gives the impression of being made rapidly, gives a feeling of satisfaction, and makes fine adjustments slowly. It is possible to adjust the position easily, and it is possible to prevent backfire and the like due to a rapid change in the combustion amount.

(8) Since the shape of the gas passage of the gas flow restrictor is substantially rhombic, and the linear displacement of the driver is suppressed when the driver is mounted on the gas flow restrictor, the gas flow rate is reduced. Compared to the case where the gas passage port of the regulator is circular, the degree of freedom in the combination of the arrangement of the gas flow regulating ports that regulates the gas flow rate is higher, so that the gas flow regulating section can be manufactured compactly and the target gas It is possible to freely set the flow rate.

(9) A driving body is directly joined to a rotary movable gas flow regulating body, and the driving body is cylindrical and has an external gear on its outer periphery. The backlash of the external gear is set to a large value to regulate the gas flow volume. Since the rotation axis of the drive body is fitted to the rotation axis of the gas flow restricting body when the drive body is mounted on the section, adjustment is possible in assembly of the electric drive section and the gas flow restricting section. It is unnecessary and easy to assemble, and there is no biting or the like when the gas flow restrictor rotates. Moreover, since the driving body is directly joined to the gas flow rate regulating body, the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic structural view of a gas flow rate regulating unit, a position detecting unit, and an electric drive unit in an embodiment of the present invention.

FIG. 2 is a front perspective view of a gas cooker according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a stove according to an embodiment of the present invention.

FIG. 4 is a correlation diagram of the shape of the shaft slide groove of the driving body and the positions of the gas flow rate regulator, the gas outlet, and the gas flow rate regulator and the flow rate characteristics in one embodiment of the present invention.

FIG. 5 is a correlation diagram of the shape of the shaft slide groove of the driving body and the positions of the gas flow rate regulator, the gas outlet, and the gas flow rate regulator and the flow rate characteristics in another embodiment of the present invention.

FIG. 6 is a schematic structural view of a gas flow rate regulating unit, a position detecting unit, and an electric drive unit in another embodiment of the present invention.

FIG. 7 is a top view of a rotary drive type gas flow rate regulator according to another embodiment of the present invention.

FIG. 8 is a front perspective view of a conventional gas cooker.

FIG. 9 is a schematic structural diagram of a conventional stove.

FIG. 10 is an adjustment diagram of gas flow rate during automatic temperature control in a conventional example.

[Explanation of reference numerals] 30 gas flow rate control unit 31 electric drive unit 32 position detection means 38 driver 49 gas flow rate control unit 50 gas passage port 55 spring 69 external gear 70 connection body

Claims (5)

[Claims] 1. A gas combustion apparatus, a gas flow rate control unit having a linearly movable gas flow rate control unit that controls a gas flow rate, a connection body detachably connected to the gas flow rate control unit, and the connection body. And a rotary drive type driving body that drives the gas flow rate regulating body and is attached to the gas flow rate regulating portion and urges the driving body and the driving body to urge the driving body in a mounting direction with respect to the gas flow rate regulating portion. Gas combustion control, characterized in that it is configured by a driving unit having the driving unit, and that when the driving unit is attached to the gas flow rate regulating unit, the driving body in the driving unit is constantly urged by the gas flow rate regulating unit. apparatus. 2. A gas combustion appliance, a gas flow rate regulating portion having a linearly movable gas flow rate regulating body for regulating a gas flow rate, a coupling body detachably coupled to the gas flow rate regulating body, and the coupling body. And an electric drive unit having a rotary drive type driving unit for driving the gas flow rate regulating body, the driving body having an external gear on the outer periphery, and the driving body being mounted on the gas flow rate regulating unit. A gas combustion control device characterized in that the backlash of the external gear is set to a large value in order to absorb the mounting play of the driving body at this time. 3. A thermal power setting means for setting thermal power of a gas combustion appliance, a gas flow rate regulating portion having a linearly movable gas flow rate regulating body for regulating the gas flow rate, and a gas flow rate regulating body which is detachable. And an electric drive unit having a rotary drive type driving body which is connected to the connecting body and drives the gas flow rate regulating body, and a position detecting means for detecting the position of the gas flow rate regulating body. A structure in which the position detection means is concentrically joined to the drive body, and the drive speed of the electric drive unit is variable depending on the magnitude of change in the set amount by the thermal power setting means and the detection position of the position detection means. A gas combustion control device characterized by: 4. A gas combustion appliance, a gas flow rate regulating portion having a linearly movable gas flow rate regulating body for regulating a gas flow rate, a coupling body detachably coupled to the gas flow rate regulating body, and the coupling body. And a rotary drive type driving body that drives the gas flow rate regulating body and is attached to the gas flow rate regulating portion and urges the driving body and the driving body to urge the driving body in a mounting direction with respect to the gas flow rate regulating portion. Comprising a drive unit, the shape of the gas passage of the gas flow restrictor is substantially rhombic, when the drive unit is mounted on the gas flow restrictor, the drive member in the drive unit becomes the gas flow restrictor. A gas combustion control device characterized by being constantly energized. 5. A gas combustion apparatus, a gas flow rate control unit having a rotatably movable gas flow rate control unit for controlling a gas flow rate, and a rotary drive for driving the gas flow rate control unit connected to the gas flow rate control unit. Drive unit having an external gear on the outer circumference, the backlash of the external gear is set to a large value, and the drive unit is mounted on the gas flow rate regulating unit. A gas combustion control device characterized in that the rotational axis of the body is adapted to the rotational axis of the gas flow regulating body.