JPH08285279A - Combustion adjusting device for gas equipment - Google Patents

Abstract

PURPOSE: To provide a thermal power adjusting mechanism in the ignition time which is easy to mount and adjust, and capable of being enhanced in its durability, and model-changed in the settlement of an ignition position responding to a desired model. CONSTITUTION: A thermal power adjusting mechanism 300 in the ignition time provides one fulcrum 61, and an arm of force point 62 which is interlocked with an ignition/extinguishing mechanism 100 and energized on one end, and a return lever 6 which is laid out intersecting with an operation lever 4 and having an arm of action 63, and two contacts 64 and 65 which are installed to the operation lever 4 and placed in contact with the arm of action 63 on the other end. When the operation lever 4 is set to any other point than the intermediate thermal power position, the arm of action 63 pushes either of the contacts 64 or 65 and turns the operation lever to the intermediate thermal power position.

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]

DISCLOSURE OF THE INVENTION The object of the present invention is to make it possible to set the range of medium heat power suitable for ignition to a desired range with an appropriate width, and to have a simple structure, easy assembly and adjustment, and improved durability. (EN) Provided is a combustion adjusting device for a gas equipment, which is equipped with a fire power adjusting mechanism at the time of ignition, which can easily change the design of the ignition position according to the model of the gas equipment. 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]

DISCLOSURE OF THE INVENTION The present invention is a point / fire extinguishing mechanism that is operated by manual operation, and is rotatably supported by a fulcrum, and is a rotary unit for adjusting the heating power of a burner from high to low. Gas equipped with a dynamic slide type operation lever, and a fire power adjustment mechanism at the time of ignition for setting the fire power of the burner to the medium heat position in conjunction with the operation of the point / fire extinguishing mechanism at the time of ignition In the device combustion adjustment device, the ignition power adjustment mechanism has one fulcrum, one end has a force point urged by the operation of the point / fire extinguishing mechanism, and the other end has a force applied to the operation lever. When the operating lever is set to a position other than the medium heat position, the point at the time of ignition is constituted by a return lever having an operating portion and two contactors provided on the operating lever and contacting the operating portion. Fire extinguishing mechanism In conjunction with the operation, the working portion, characterized in that the pivoting in the middle-fired position direction the operating lever pushes one of the contacts.

In the combustion adjusting device for a gas appliance according to a second aspect of the invention, when the operation lever is set to a position other than the medium heat power position, in conjunction with the operation of the point / fire extinguishing mechanism at the time of ignition,
It is characterized in that the operating portion presses one of the contactors to rotate the operation lever to a medium heat position in which the two contactors simultaneously contact the operating portion. The combustion adjusting device for a gas appliance according to claim 3, wherein the acting portion comprises a lateral acting arm arranged orthogonal to the operating lever, and the two contacts are provided from both sides of the operating lever. It is characterized by a pair of hand portions projecting orthogonally to each other.

In the combustion adjusting device for a gas device according to a fourth aspect, the ignition power adjusting mechanism at the time of ignition has one fulcrum,
A return lever that has a force point that is urged in conjunction with the operation of the point / fire extinguishing mechanism at one end, and that is arranged at the other end so as to intersect with the operation lever and that has a V-shaped action portion for the operation lever. And one contactor provided on the operation lever and in contact with the V-shaped action portion. When the operation lever is set to a position other than the medium heat position, the point / fire extinguishing mechanism at the time of ignition is In association with the operation, the V-shaped acting portion presses the contactor to rotate the operation lever in the direction of the medium heating power position which is the center of the V-shaped acting portion. A combustion adjusting device for a gas device according to a fifth aspect of the invention is characterized in that the contact is a pin provided so as to hang downward from the operation lever.

[0009]

According to the invention described in claim 1, since the operating portion is provided at the other end of the return lever and the two contactors are provided at the operating lever, the structure is simple and the assembling and adjusting are easy. Therefore, the durability can be improved. Further, by adjusting the positions of the two contacts, the level or width of the medium heat power at the time of ignition can be easily designed according to the type of gas equipment. With the configuration according to claim 2, it is possible to limit the medium heat power to one point. According to the third aspect of the present invention, the structure can be most simplified by forming the two contacts as the extension part of the operation lever and forming the operation part as the extension part of the return lever.

According to the fourth aspect of the invention, since the V-shaped action portion is provided at the other end of the return lever and one contact is provided at the operation lever, the structure is simple, and the assembling and adjusting are easy. Yes Durability can be improved. Further, by adjusting the shape of the V-shaped acting portion, the magnitude of the medium heat power at the time of ignition can be easily designed according to the model of the gas equipment. Claim 5
As described in (3), the structure can be made the simplest by forming the V-shaped acting portion as an extension portion of the return lever.

[0011]

1 to 5 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. As for the slide position of the slide type operation knob 20, in FIG. 6, the right end has a low heat power, the middle has a medium heat power, and the left end has a high heat power.

As shown in FIG. 3, the point / fire extinguishing mechanism 100 is
A safety valve S and a main valve M are provided inside, and a tubular valve body 1 horizontally mounted in the front-rear direction is provided. A heat power adjusting valve body 2B of the heat power increasing / decreasing mechanism 200 is vertically fastened to the upper surface of the front part (right part in the drawing) of the valve body 1. The thermal power control valve body 2B has a tubular shape, and the thermal power control valve 2 is provided at the upper end of the inner cavity. 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 operating the heat adjusting valve 2 and adjusting the heat of the burner B is attached to the upper end of the heat adjusting valve body 2B so as to be rotatable in the left and right directions.
The operating lever 4 is, in this embodiment, the thermal power control valve body 2
A bottomless box-shaped bracket 41 fastened to the upper end surface of B is rotatably supported by a fulcrum 42. At the front end of the operation lever 4, the slide type operation knob 20 is provided.
Is stuck.

The switch mechanism 3 is fastened to the front end surface of the valve body 1 with a screw, and a guide frame 31 forming a guide surface having a substantially 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 actuator 32 is biased forward (to the left 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 pushing position (ignition position) shown in Figs. 3 and 5 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).

The shaft hole 11 of the valve body 1 has an electromagnet 12 of a safety valve S penetrating the rear portion (right portion in the drawing), and a fuel gas passage 13 is formed inside. An inflow port 14 that opens downward is provided at the front part (left part in the drawing) of the valve body 1, and an outflow port 15 that opens upward and communicates with the thermal power control valve body 2B is formed at the rear part. In the shaft hole 11, the actuation rod 5 having the tip abutting against the tip (right end in the figure) of the rod-shaped base 33 of the actuator 32 is inserted so as to be movable back and forth. Operating rod 5
Is urged in the forward direction by the spring 51 and is displaced in the front-rear direction in conjunction with the actuator 32.

A portion of the fuel gas passage 13 where the outlet 15 is provided is formed with a small diameter to form a valve opening 16, which is a collar-shaped main valve fitted on the operating rod 5 and provided with the spring 51 installed back. A main valve M is formed with the 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).

The internal space of the heat regulation valve body 2B is the gas passage 2
The valve body 22 of the thermal power regulating valve 2 is slidably fitted into the upper end of the gas passage 21. Disc 22
The valve hole is connected to a gas outlet 24 for supplying fuel gas to the stove burner B. The upper end portion of the valve body 22 is exposed at the upper portion of the thermal power control valve body 2B, and the needle pin 23 for rotating the valve body 22 is attached to the exposed portion in the orthogonal direction.

The needle pin 23 is used for the heat regulation valve body 2
An inclined slit 4 which extends laterally from the upper end of B and is provided on the right side wall of the box-shaped bracket 41 and acts as a cam groove.
It projects to the outside through 0. The inclined slit 40 is
The amount of rotation of the needle pin 23 is converted into the amount of axial movement of the valve element 22 to increase or decrease the valve opening degree of the thermal power control valve 2.

The ignition power adjusting mechanism 300 for ignition has a plate-like return lever 6 rotatably attached to the ignition power adjusting valve body 2B at a fulcrum 61 on the right side wall of the ignition power adjusting valve body 2B. At the lower end of the return lever 6, a band plate-shaped force point arm 6 that comes into contact with the lever action portion 34 of the actuator 32 and becomes a force point.
2 is laterally extended so as to be bent at a right angle to the front surface side of the thermal power control valve body 2B. At the upper end of the return lever 6, a band-plate-shaped working arm 63 as a working portion is laterally extended so as to be bent at a right angle to the front surface side of the thermal power control valve body 2B.

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 7,
The spring joint 8 is provided between the lever base plate 43 and the lever main body 7.

On the right side of the lever base plate 43 (right side of the fulcrum 42), there is 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 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 main body 7 is formed by pressing a sheet metal, and has a narrow tip locking portion 71 and a wide intermediate portion 7.
2. Consists of a narrow front end 73. From both sides of the intermediate portion 72, strip-shaped contactors (a pair of hand portions) 64 and 65 bent downward at a substantially right angle are provided. Contacts 64, 6
The reference numeral 5 interferes with the working arm 63 as the return lever 6 rotates, and causes the return lever 6 and the operation lever 4 to interlock with each other.

The spring joint 8 is a spring holding member including a support wall portion 81 extending upward from the left end of the intermediate portion 72 of the lever body, and an arm portion 82 extending laterally from the front end of the support wall portion 81. It has means 83. Lever board 43
A rectangular window 84 is formed in the front side extension portion 45, and the other end of the joint spring 85 of the spring joint 8 is supported inside the intermediate portion 72 of the lever body.
A cut-and-raised claw 86 cut and raised at a substantially right angle is formed. The cut-and-raised claw 86 is inserted through the rectangular window 84 and protrudes upward, and one end of the joint spring 85 is hooked. The front wall of the bracket 41 has a step 8
A notch 88 with 7 is formed, and the distal end locking portion 71 of the lever body is inserted.

The spring joint 8 lifts the slide type operation knob 20 (see FIG. 1) to move the lever main body 1
Only when it is tilted about 0 degrees, the tip locking portion 71 is stepped 8
The engagement lever 7 is disengaged so that the operation lever 4 can be slid from the medium heat power to the weak heat power position.

When the operating lever 4 is set to the leftmost strong heat position or the rightmost weak heat position in FIG. 6, the return lever 6 has a position in which the upper end is inclined forward (see FIGS.
3, 5), the needle pin 23 is maintained at the uppermost position or the lowermost position, and the thermal power control valve 2 is at the maximum opening or the minimum opening.

Next, the operation of the combustion adjusting device for the gas equipment will be described. At the time of ignition, when the operating lever 4 is set to the high fire power position as shown in FIG. 4, when the point / fire extinguishing button 10 is pushed, the actuator 32 is pushed. At this time, the rod-shaped base portion 33 pushes in the actuating rod 5, and the main valve M
Then, the safety valve S is opened, and the micro switch actuating portion 35 turns on the micro switch to cause the sparker P (see FIG. 2) attached to the burner B to generate spark discharge.

Interlocking with this operation, as shown in FIG. 3, the lever acting portion 34 hits the power point arm 62 projecting forward, and further pushes the power point arm 62 to the position indicated by the chain double-dashed line to move the return lever 6 counterclockwise. Rotate in the direction. By this operation, as shown in FIG. 5, the working arm 6 at the upper end of the return lever 6 is
3, the strip-shaped contactor 64 is pressed, and the operating lever 4 is rotated to a medium heat position (ignition heat position) in which the two contacts 64, 65 simultaneously contact the working arm 63. At this time, even if the push-out position of the actuation rod 5 by the point / fire extinguishing button 10 varies during ignition, the lever main body 7 attached to the lever base plate 43 moves upward, absorbs the play, and can be accurately set to the medium heat position.

In this embodiment, the medium heat power position is one point, but the medium heat power position has a certain width, and when the operation lever 4 is set to the high heat power position, When the operation lever 4 is displaced to a higher position than the thermal power position and the operating lever 4 is set to the weak thermal power position, it may be displaced to a lower position than the medium thermal power position. Since the medium heat power range suitable for ignition has a width, 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 first.

Even when the heat power adjusting lever 4 is set to the weak heat power position, the contact arm 65 is similarly pushed by the working arm 63, and the operating lever 4 is rotated to the medium heat power position. As a result, at the time of ignition, the thermal power of the burner B is automatically set to the thermal power at the intermediate thermal power position suitable for ignition, and the ignition is smoothly performed. Due to the ignited flame of the burner B, the electromagnet 12 of the safety valve S is magnetized by the electromotive force of the thermocouple N (see FIG. 2) attached to the burner B, so that the safety valve S opens and combustion continues.

When the pushing operation of the point / fire extinguishing button 10 is stopped and released, the actuator 32 returns to the front and is locked at the intermediate position by the push / push mechanism. If 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 as 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.

FIG. 7 shows another embodiment. In this embodiment, a V-shaped acting portion 66 is formed at the other end (upper end) of the return lever 6, and a pin 67 is provided on the lower surface of the operation lever so as to project.
The V-shaped acting portion 66 may be a V-shaped wall surface obtained by extending the upper end of the return lever 6 as shown, or may be a V-shaped notch. Further, the pin 67 may be a round bar fixed separately as well as the lever body 7 cut and raised as shown. This embodiment also has the same operation as above.

In each of the above embodiments, a pressing type point / fire extinguishing mechanism is used. However, a combination of a rotary dial knob and a mechanism for converting rotational movement into axial back-and-forth movement is used. You may use.

[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 cross-sectional view of a combustion adjusting device for gas equipment.

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

FIG. 5 is a cross-sectional view of a combustion adjusting device for gas equipment.

FIG. 6 is a perspective view of a table stove.

FIG. 7 is a perspective view of a combustion adjusting device for a gas appliance according to another embodiment.

[Explanation of symbols]

 1 Valve Body 2 Thermal Power Control Valve 3 Switch Mechanism 4 Operating Lever 5 Actuating Rod 6 Return Lever 23 Needle Pin 42 Support Point 61 Support Point 62 Power Point Arm (Power Point) 63 Working Arm (Working Part) 64, 65 Contactors (A Pair of Hand Parts) 66 V-shaped action part 67 pin (contact) 100 points, fire extinguishing mechanism 200 heat power increasing / decreasing mechanism 300 fire power adjusting device B stove burner U combustion adjusting unit

Claims (5)

[Claims] 1. A point / fire extinguishing mechanism which is operated by manual operation, and a rotary slide type operation lever which is rotatably supported by a fulcrum and which adjusts the heating power of the burner from high to low. In a combustion adjustment device for a gas appliance, which includes a fire power adjustment mechanism at the time of ignition for setting the fire power of the burner to a medium heat position in conjunction with the operation of the point / fire extinguishing mechanism at the time of ignition, The ignition power adjustment mechanism at the time of ignition has one fulcrum, has a force point urged by the operation of the point / fire extinguishing mechanism at one end, and a return lever having an action portion for the operation lever at the other end, When the operation lever is set to a position other than the medium heat power position, it is linked to the operation of the point-and-fire extinguishing mechanism at the time of ignition, , The action There combustion tuning device for a gas appliance, characterized in that rotating a medium thermal position direction the operating lever pushes one of the contacts. 2. The operating unit according to claim 1, wherein when the operating lever is set to a position other than the medium heat position, the action portion is one of the contacts in conjunction with the operation of the point / fire extinguishing mechanism during ignition. Press one to push the operating lever to the 2
A combustion adjusting device for a gas appliance, wherein one contact is simultaneously rotated to a medium thermal power position in which the contact is brought into contact with the acting portion. 3. The method according to claim 1, wherein
The action part is composed of a lateral action arm arranged orthogonally to the operation lever, and the two contacts are a pair of hand portions projecting orthogonally to the action arm from both sides of the operation lever. A combustion adjusting device for a gas appliance, which is characterized in that 4. A point / fire extinguishing mechanism which is operated by manual operation, and a rotary slide type operation lever which is rotatably supported by a fulcrum and which adjusts the heating power of the burner from high to low. In a combustion adjustment device for a gas appliance, which includes a fire power adjustment mechanism at the time of ignition for setting the fire power of the burner to a medium heat position in conjunction with the operation of the point / fire extinguishing mechanism at the time of ignition, The ignition power adjustment mechanism at the time of ignition has one fulcrum, has a force point urged in conjunction with the operation of the point / fire extinguishing mechanism at one end, and is arranged at the other end intersecting with the operation lever. And a return lever having a V-shaped acting portion for the operating lever, and one contactor provided on the operating lever and in contact with the V-shaped acting portion. Is set At this time, in conjunction with the operation of the point / fire extinguishing mechanism at the time of ignition, the V-shaped action portion pushes the contactor to move the operation lever toward the medium heat position direction which is the center of the V-shaped action portion. A combustion adjusting device for a gas appliance, which is rotated. 5. The combustion adjusting device for a gas device according to claim 3, wherein the contact is a pin provided so as to extend downward from the operating lever.