JPH08312955A - Combustion regulator for gas appliance - Google Patents

Abstract

PURPOSE: To provide a combustion regulator for a gas appliance having a thermal power regulating mechanism at the time of igniting capable of facilitating the assembling and regulating with a simple structure and improving the durability. CONSTITUTION: A thermal power regulating mechanisms 300 at the time of igniting comprises a pair of return levers 6, 7 having fulcra 61, 71 rotatably supported to a thermal power regulating valve body and operating parts 63, 73 having force point surfaces 62, 72 operating a pair of needle pins 23, 24 providing force point surfaces 62, 72 energized by the operations of igniting or fire extinguishing mechanism at one end and providing at the rotary valve disc 22 of the regulating valve at the other end, wherein the disc 22 is displaced from a strong thermal power position or a weak thermal power position to an intermediate thermal power direction by the operation of the igniting or fire extinguishing mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal power adjusting mechanism for automatically setting the thermal power of a burner to an easy and safe level of ignition at the time of ignition.

[0002]

2. Description of the Related Art Gas appliances such as a table stove are provided with a point / fire extinguishing mechanism for igniting and extinguishing the burner, and a heat power adjusting mechanism for increasing or decreasing the heat power of the burner. From the viewpoint of operability, the point / fire extinguishing operation is often performed by pushing the ignition knob in the front-back direction such as the point / fire extinguishing button, but there are also gas appliances operated by rotating the knob. For the thermal power adjustment operation, a slide type operation lever is provided to continuously adjust the thermal power from weak to medium to strong or vice versa, and the operation knob for thermal power adjustment attached to the front end of the operation lever is placed in the left-right direction or the like. It is made by sliding to.

In the gas equipment, a direct ignition system is adopted in which an air-fuel mixture and a combustion air are ignited by an ignition source such as a discharge spark. In order to carry out this direct ignition smoothly and surely, it is desirable that the heat power of the burner is set to a heat power of medium or higher at the time of ignition. Further, in recent years, there has been a demand for use of a high-power burner, and it is dangerous for an elderly person or a user who wears clothes with sleeves, such as cooking clothes, if the heat power at ignition is too large. For this reason, conventionally, a number of ignition power adjustment mechanisms for ignition have been proposed in which the operation lever for adjusting the ignition power is forcibly and automatically set to a medium heat position suitable for ignition in conjunction with the ignition operation.

This kind of ignition power adjustment mechanism at the time of ignition is provided with a return lever for always moving the operation lever for adjusting the heat power to the intermediate heat power position in conjunction with the ignition operation. This return lever rotates about one fulcrum, has a force point urged by a movable member that is moved by an ignition operation at one end, and drives the operation lever for adjusting the heat power at the other end. It has an action part. With this configuration, when the operating lever is set to a position other than the medium heat position during ignition operation, the return lever that rotates in conjunction with the ignition operation causes the operation lever to forcibly and automatically reduce the burner heat power. It is returned to the position where it becomes a firepower, and a smooth and gentle safe ignition is performed.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to have a simple structure, easy assembling and adjustment, and improved durability, and interlocking with a returning operation for performing a re-ignition operation after completion of ignition operation. Another object of the present invention is to provide a combustion adjusting device for a gas appliance provided with a heat power adjusting mechanism at the time of ignition in which the returning member automatically returns to its original position by its own weight. In the present invention, the medium heat power means a heat power in a predetermined range most suitable for ignition between the high heat power and the low heat power.

[0006]

According to the present invention, a point / fire extinguishing mechanism for igniting and extinguishing a burner and a rotary valve body are arranged in a heat power adjusting valve body and attached to the rotary valve body. By rotating the pair of needle pins around the axis to increase or decrease the valve opening, the heat control valve that adjusts the heat of the burner from high to low is linked to the operation of the point / fire extinguishing mechanism during ignition. Then, in a combustion adjustment device for a gas appliance provided with a fire power adjustment mechanism at the time of ignition for setting the needle pin to a medium heat power position, the fire power adjustment mechanism at the time of ignition is rotated to the heat power adjustment valve body. From a pair of return levers that have a fulcrum supported freely, one end is provided with a force point urged by the operation of the point / fire extinguishing mechanism, and the other end has an action portion that acts on the pair of needle pins, respectively. And the above point Wherein the displacing a medium thermal direction the rotating valve body by the operation of the fire mechanism from one of high heat-force position or low heat-force position.

According to a second aspect of the present invention, there is provided a thermal power control device for a gas appliance, wherein the thermal power control valve is provided on an upper portion of the thermal power control valve body arranged in a longitudinal direction, and the pair of needle pins are
A right needle pin and a left needle pin that are provided on the left and right of the top of the rotary valve body protruding upward from the upper end of the heat control valve body, and the pair of return levers are
A right side return lever that is attached to the left and right of the thermal power control valve body and that pushes the right side needle pin from one of the high thermal power position or the low thermal power position in the medium thermal power direction, and the right needle pin that is in the high thermal power position or the low thermal power position. It is characterized by comprising a left side return lever which is pushed from one of the above in the direction of the medium heat power.

[0008]

According to the first aspect of the present invention, the operation of the point / fire extinguishing mechanism is converted into the rotation of the rotary valve body of the thermal power control valve by the pair of needle pins and the pair of return members, and a strong fire is generated. The power is adjusted from low or medium to medium. Therefore, the structure of the mechanism is simple, the operability is excellent, and the durability is high. With the configuration according to claim 2, the pair of needle pins and the pair of return members can be formed with a simple structure. Further, after the operation, it is not necessary to provide a special returning mechanism for the returning member.

[0009]

1 to 4 show a combustion adjusting unit U including a point / fire extinguishing mechanism 100 of a stove burner B, a heat power increasing / decreasing mechanism 200, and a fire power adjusting mechanism 300 at the time of ignition. The combustion adjusting unit U is mounted inside the table stove T shown in FIG. On the front surface of the table stove T, a point / fire extinguishing button 10 for operating the point / fire extinguishing mechanism 100.
However, it is urged forward by a spring (not shown) and is swingably attached in the front-rear direction.

Above the point / fire extinguishing button 10, a slide type operation knob 20 for operating the heat power increasing / decreasing mechanism 200 is provided.
However, it is provided to be slidable in the left-right direction. Regarding the slide position of the slide type operation knob 20, the right end has a low heat power, the middle has a medium heat power, and the left end has a high heat power.

The point / fire extinguishing mechanism 100 is provided with a safety valve S and a main valve M (see FIG. 4) inside, and is provided with a tubular valve body 1 mounted horizontally in the front-rear direction.
On the upper surface of the front part (left part in the figure) of the valve body 1, the heat power adjusting valve body 2 of the heat power adjusting mechanism 200 is vertically fastened. The thermal power regulating valve body 2 has a tubular shape, and the fuel gas passage 2
A thermal power control valve G is provided at the upper end of the inner lumen. A switch mechanism 3 operated by a point / fire extinguishing button 10 is fastened to the front end surface of the valve body 1.

An operating lever 4 for adjusting the heating power of the burner B by operating the heating power adjustment valve G (see FIG. 4) is attached to the upper end of the heating power adjustment valve body 2 so as to be rotatable in the left and right directions. . In this embodiment, the operation lever 4 is rotatably supported by a fulcrum 42 on an upper wall surface of a bottomless box-shaped bracket 41 fastened to the upper end surface of the thermal power control valve body 2. The slide type operation knob 20 is fixed to the front end portion of the operation lever 4.

The switch mechanism 3 is fastened to the front end surface of the valve body 1 with a screw, and has a guide frame 31 forming a guide surface having a cross-shaped cross section, and an actuator fitted in the guide frame 31 so as to be movable back and forth. And 32. Actuator 32
Has a substantially cruciform front shape, and has a rod-shaped base 33,
It has a wing-shaped lever action portion 34 projecting upward from the rod-shaped base 33, and a micro switch actuating portion 35 projecting leftward and rightward from the rod-shaped base 33. The tip of the lever acting portion 34 is a horizontal plate-shaped contact portion 36.

The actuator 32 is urged forward (leftward in the drawing) by a spring 37 interposed between the actuator 32 and the guide frame 31. A micro switch (not shown) is attached to the left side surface of the guide frame 31, and opens and closes in accordance with the displacement of the micro switch operating portion 35. The actuator 32 is shown in FIG.
When pushed in from the protruding position (fire extinguishing position) shown in Fig. 3,
The push-in position (ignition position) shown in is reached. When the push-in is released in this state, it is locked at the intermediate position (combustion position) by the push-push mechanism by a not-shown heart cam or modified heart cam, and when pushed again from the intermediate position, it returns to the original protruding position (fire extinguishing position).

As shown in FIG. 4, an electromagnet 12 of the safety valve S is fitted to the rear portion (right portion in the drawing) of the shaft hole of the valve body 1, and the inside is a fuel gas passage 11. An inflow port 14 opened downward at the front part (left part in the figure) of the valve body 1.
Further, an outlet 15 is formed in the front portion and opens upward and communicates with the fuel gas passage 21 of the thermal power control valve body 2.

In the fuel gas passage 11, the tip is the actuator 3.
The actuating rod 5 that is in contact with the tip (right end in the figure) of the rod-shaped base 33 of No. 2 is inserted so as to be movable back and forth. The actuation rod 5 is biased in the forward direction by the spring 51 and is displaced in the front-rear direction in conjunction with the operator 32.

The portion of the fuel gas flow passage 11 where the outlet 15 is provided is formed to have a small diameter to form a valve opening 16, which is a collar-shaped main body which is fitted on the operating rod 5 and on which the spring 51 is installed. A main valve M is formed with the valve body 52. A throttle wall 54 is formed between the main valve M and the inflow port 14 and serves as a valve port 55 of the safety valve S. A collar-shaped safety valve body 56 of the safety valve S is externally fitted together with the safety valve spring on the rear portion of the operating rod 5, and closes the valve port 55 when the operating rod 5 is located on the front side (left side in the drawing).

At the upper end of the fuel gas passage 21 of the heat regulation valve body 2, a rotary valve body 22 of the heat regulation valve G is slidably fitted. The valve hole of the rotary valve body 22 is connected to the gas outlet 2A for supplying the fuel gas to the stove burner B. As shown in FIGS. 6 to 8, the upper end of the rotary valve body 22 is exposed at the upper part of the thermal power control valve body 2, and the valve body 22 is rotated at the exposed portion to increase or decrease the valve opening degree. The right needle pin 23 and the left needle pin 24 are attached so as to face back in the direction orthogonal to the rotation axis.

The right needle pin 23 and the left needle pin 24 may be separately attached to the exposed portion of the rotary valve body 22, and one rod may be provided in the hole formed in the exposed portion of the rotary valve body 22. It may be formed by fitting the material into a skewered shape. In this embodiment, the right needle pin 23 and the left needle pin 2
4 extends from the upper end of the thermal power regulating valve body 2 to the right or left side, and the right needle pin 23 projects to the outside through an inclined slit 40 provided on the right side wall of the box-shaped bracket 41 and acting as a cam groove. There is.

The inclined slit 40 is formed by the right needle pin 2
The amount of rotation of No. 3 is converted into the amount of movement of the rotary valve body 22 in the axial direction to increase or decrease the valve opening of the thermal power adjustment valve G. When the right needle pin 23 is set to the upper end (front end) as shown in FIG. 1, the valve opening degree of the thermal power adjusting valve G becomes maximum and the thermal power of the burner B becomes maximum. When the right needle pin 23 is set to the lower end (front end) as shown in FIG. 2, the opening degree of the thermal power control valve G is minimum and the thermal power of the burner B is minimum.

The ignition power adjustment mechanism 300 for ignition has a fulcrum 61 on the right side wall of the ignition power adjustment valve body 2, and a right return lever 6 made of sheet metal mounted rotatably around the fulcrum 61.
A fulcrum 71 is provided on the left side wall of the thermal power adjustment valve body 2, and the left side return lever 7 made of sheet metal is rotatably mounted around the fulcrum 71.

The right side return lever 6 is formed with a force point surface 62 urged by the operation of the switch mechanism 3 of the point / fire extinguishing mechanism 100 at the lower end, and pushes up the right needle pin 23 from the weak heat position to the medium heat direction at the upper end. Is provided with a working surface 63. The left side return lever 7 has a force point surface 72 formed at the lower end and urged by the operation of the switch mechanism 3 of the point / fire extinguishing mechanism 100, and an action for pushing down the left needle pin 24 from the high heat position to the middle heat direction. A surface 73 is provided.

In this embodiment, the force application surfaces 62 and 72 are
Is formed as a horizontally long strip-shaped surface obtained by bending the lower end front portion of the return lever 6 or 7 at a right angle. The working surface 63 is an inclined edge formed on the upper end of the right side return lever 6, and
3 is a substantially L-shaped edge formed on the upper end of the left side return member. When the right return lever 6 rotates counterclockwise, the working surface 63 contacts the right needle pin 23, and when the left return lever 7 rotates counterclockwise, the working surface 73 contacts the left needle pin 24.

The operating lever 4 includes a lever base plate 43 rotatably supported by a fulcrum 42 on the upper wall surface of the bracket 41, and a front side extension part 45 extending forward from the lever base plate 43 through a step 44. The connected lever body 8,
It comprises a spring joint 80 provided between the lever base plate 43 and the lever body 8.

On the right side of the lever base plate 43 (right side of the fulcrum 42), there is provided a fork-shaped portion 46 which is extended and bent downward at a substantially right angle and in which a notch groove is formed, and the tip of the right needle pin 23. Is engaged with. Inverted L-shaped claws 47, 47 project downward from the front end of the front extension 45. The lever body 8 is formed by pressing a sheet metal, and includes a narrow end locking portion 81, a wide middle portion 82, and a narrow front end portion 83.

The spring joint 80 has a spring holding means 84 including a support wall portion extending upward from the left end of the intermediate portion 82 of the lever body, and an arm portion extending laterally from the front end of the support wall portion. Have. A rectangular window 85 is formed in the front extension portion 45 of the lever base plate 43, and is cut and raised at a substantially right angle in the middle portion 82 of the lever body to support the other end of the joint spring 86 of the spring joint 80 therein. A cut and raised claw 87 is formed.

The cut-and-raised claw 87 is inserted through the rectangular window 85 and protrudes upward, and one end of the joint spring 86 is hooked. A notch 89 with a step 88 is formed in the front wall of the bracket 41, and the tip locking portion 81 of the lever body is inserted therein. The spring joint 80 lifts the slide type operation knob 20 (see FIG. 2).
However, only when the lever body 8 is tilted about 10 degrees, the tip locking portion 81 is disengaged from the engagement of the step 88, and the operation lever 4 can be slid from the medium heat position to the low heat position.

When the operating lever 4 is set to the right end side weak heat power position shown in FIG. 2, the right needle pin 23 is maintained at the lower end position (rear end position), and the heat power adjusting valve G is rotated. 22 is set to the lower end position and has a small opening.
When the operation lever 4 is set to the left side strong heat position as shown in FIG. 1, the left needle pin 24 is maintained at the upper end position (rear end position), and the heat adjusting valve G rotates the rotating valve body 22.
Is set to the upper end position and has a large opening.

Next, the operation of the combustion adjusting device for the gas equipment will be described. Before operating the switch mechanism 3, the safety valve S
And the main valve M is closed. At the time of ignition, when the operating lever 4 is set to the low heat position or the high heat position as shown in FIG. 1 or 3, when the point / fire extinguishing button 10 is pressed, the operator 32 is pushed. At this time,
As shown in FIG. 4, the rod-shaped base portion 33 pushes in the actuation rod 5,
The main valve M and the safety valve S are opened, and the micro switch actuating section 35 turns on the micro switch to cause the sparker P to be generated by the sparker P attached to the burner B.

In conjunction with this operation, as shown in FIGS. 3 and 4, the force application surface 62 of the right side return lever 6 or the force application surface of the left side return lever 7 in which the contact portion 36 of the lever operating portion 34 projects forward. The right side return lever 6 or the left side return lever 7 is rotated by hitting one of the 72.

As a result, the right needle pin 23 or the left needle pin 24 is displaced from the lower end position (rear end position) or the upper end position (front end position) to the middle position. As a result, the thermal power adjustment valve G rotates from a large opening (upper end position) or a small opening (lower end position) to an intermediate position (ignition thermal power position) which is a medium thermal power position. Further, the fork-shaped portion 46 is driven by the rotation of the right needle pin 23, and the operating lever 4 is also displaced to the medium heat position.

In this embodiment, the medium heat power position is one point, but the medium heat power has a certain width, and when the operation lever 4 is set to the high heat power position, the medium heat power position is set. When the operating lever 4 is set to the low thermal power position, it may be displaced to the lower thermal power position. Since the medium heat power range suitable for ignition has a width,
In this way, the configuration in which the medium heat power has a certain width is superior in practicality such as operability as compared with the case where the medium heat power is one point.

In this way, the burner B is ignited.
The thermal power of is automatically set to the thermal power of the medium thermal power position suitable for ignition, and the ignition is smoothly performed. Due to the flame of the ignited burner B, the electromagnet 12 of the safety valve S is magnetized by the electromotive force of the thermocouple (not shown) attached to the burner B, and the safety valve S and the main valve M are maintained in the open state, and the combustion continue.

When the operation of pushing the point / fire extinguishing button 10 is stopped and released, the actuator 32 returns to the front, and the right side return lever 6 and the left side return lever 7 have the operating surfaces 62 and 72 in a free state and are pushed and pushed. It is locked in the intermediate position by the mechanism. When the point / fire extinguishing button 10 is pressed during combustion, the push / push mechanism is released, and the actuator 32 returns to the position before ignition shown in FIG. As a result, the main valve M and the safety valve S are closed, and the combustion of the burner B is stopped.

In the above embodiment, the inclined slit 40 acting as a cam groove is provided on the right side wall of the box-shaped bracket 41. However, the inclined slit 40 is provided on the left side wall of the bracket 41 and rotated by the left needle pin 24. The valve body 22 may be operated. Alternatively, the inclined slits 40 may be formed on both the left and right sides, and the rotary valve body 22 may be operated by both the right needle pin 23 and the left needle pin 24.
Further, the rotary valve body 22 may have a structure in which the valve opening degree increases or decreases only by the rotation, and in this case, the inclined slit 40 can be unnecessary.

[Brief description of drawings]

FIG. 1 is a perspective view of a combustion adjusting device for a gas appliance.

FIG. 2 is a perspective view of a combustion adjusting device for a gas appliance.

FIG. 3 is a perspective view of a combustion adjusting device for a gas appliance.

FIG. 4 is a cross-sectional view of a combustion adjusting device for gas equipment.

FIG. 5 is a perspective view of a table stove.

FIG. 6 is a perspective view of a heating power adjustment mechanism during ignition.

FIG. 7 is a perspective view of a heating power adjustment mechanism during ignition.

FIG. 8 is a perspective view of a heating power adjustment mechanism during ignition.

[Explanation of symbols]

 1 Valve Body 2 Fire Power Control Valve Body 3 Switch Mechanism 4 Control Lever 5 Actuator Rod 6 Right Return Lever 7 Left Return Lever 23 Right Needle Pin 24 Left Needle Pin 62, 72 Force Face 63, 73 Working Face 100 Point / Fire Extinguishing Mechanism 200 Fire Power Increase / decrease mechanism 300 Fire power adjustment mechanism at ignition B Stove burner U Combustion adjustment unit M Main valve S Safety valve G Fire power adjustment valve

Claims (2)

[Claims] 1. A point / fire extinguishing mechanism for igniting and extinguishing a burner, and a rotary valve body arranged in a heat power adjusting valve body,
A pair of needle pins attached to the rotating valve body are rotated about an axis to increase or decrease the valve opening degree to adjust the heat power of the burner from a high heat power to a low heat power, and a fire power control valve at the time of ignition. In conjunction with the operation of a point / fire extinguishing mechanism, in a combustion adjusting device for a gas appliance including a heat adjusting mechanism at the time of ignition for setting the needle pin to a medium heat position, the heat adjusting mechanism at the time of ignition is A fulcrum rotatably supported by the heat regulating valve body, a force point urged by the operation of the point / fire extinguishing mechanism is provided at one end, and the other end acts on the pair of needle pins. A pair of return levers each having a portion, and by operating the point / fire extinguishing mechanism, the rotary valve body is displaced from either the high heat position or the low heat position in the medium heat direction. Combustion adjustment device. 2. The thermal power control valve according to claim 1, wherein the thermal power control valve is provided in an upper portion of the thermal power control valve body arranged in a vertical direction, and the pair of needle pins project upward from an upper end of the thermal power control valve body. A right needle pin and a left needle pin that are provided on the left and right of the top of the rotating valve body, and the pair of return levers are attached to the left and right of the fire power control valve body, and the right needle pin is used for high heat power. A right side return lever that pushes in the medium heat direction from either the position or the low heat position, and a left side return lever that pushes the right needle pin in the medium heat direction from either the high heat position or the low heat position. Combustion adjusting device for gas equipment.