CN201043767Y - Safety control switch for gas stove - Google Patents

Abstract

The utility model provides a safety control switch of a gas stove, which comprises a body, a taper valve chamber, a first containing chamber and a second containing chamber which are communicated with each other are arranged in the body, an air inlet channel is communicated with the first containing chamber, and a first air outlet channel and a second air outlet channel are respectively communicated with the second containing chamber and the outside; the closed group, the electromagnetic valve and the first temperature control device are respectively arranged in the valve chamber, the first accommodating chamber and the second accommodating chamber; the second temperature control device and the knob set are arranged outside the body, and the knob set is connected with the closer, the first temperature control device and the electromagnetic valve and can be used for pushing the electromagnetic valve, driving the closer to rotate and linking the first temperature control device so as to control whether gas can flow into the gas inlet channel or flow out of the first and second gas outlet channels; therefore, the integrated design with multiple effects of temperature control, flameout protection, sequential ignition and the like can be obtained.

Description

Safety control switch for gas stove

technical field

The utility model relates to a gas stove, in particular to a safety control switch for a gas stove.

Background technique

The gas ignition switch is basically a highly mature product, and there are many improvements and creations on the gas ignition switch, all of which are specific improvements to the partial structure of the gas ignition switch to obtain better practical effects. Now, the applicant proposes the utility model in order to make this class of products more refined.

The structure of the multi-stage gas ignition switch commonly used in the industry at present generally includes a switch body, the switch body is provided with a valve chamber and a container chamber connected to each other, an air inlet channel and several outlet air channels, which pass through the switch body And connected to the chamber or valve chamber; a closing group, set in the valve room; a solenoid valve, set in the chamber and connected to the closing group; a knob group, set at one end of the switch body and connected to the closing group; a thermocouple , electrically connected to the solenoid valve. When igniting, first press and rotate the rotating shaft of the knob group, so that the front end of the closing rod inside the closing sub-group can press the valve plug of the solenoid valve forward to make it shift, so that the gas can enter the interior from one end of the closing sub-group, and then The main fire igniter is ignited through the outlet flow channel, and then the thermocouple can sense the heat of the main fire to generate a current, and then the solenoid valve generates magnetic force to attract the valve plug, so as to maintain the continuous output of gas for the burner (main fire) to generate Sequential ignition function.

And when the main fire of the burner of the gas stove is extinguished for some reason, the thermocouple no longer senses the heat to prompt the solenoid valve to return to its original state, thereby avoiding the situation of continuous gas output and leakage, which is used to obtain the effect of flameout protection. Furthermore, there is also a gas ignition switch with temperature control function used in the industry.

That is to say, although the existing gas ignition switches are usually equipped with safety function designs such as sequential ignition, flameout protection or temperature control, if one wants to obtain the aforementioned three safety functions at the same time, it is usually necessary to combine gas ignition switches with different functional designs. As a group of control systems, in this way, there are disadvantages such as cumbersome connecting pipelines, bulky and inconvenient actual use. However, if the ignition switch with only one or two safety functions is used alone, there are still safety concerns in use.

Utility model content

In view of this, the main purpose of this utility model is to provide a safety control switch for gas stoves that can solve the above-mentioned shortcomings. Functional all-in-one design.

Therefore, in order to achieve the aforementioned purpose, the utility model provides a safety control switch for a gas stove, the safety control switch includes:

The main body is provided with a conical valve chamber communicating with the first chamber and the second chamber, and the connection between the conical valve chamber and the first chamber is provided with a first control port. The connection of the second chamber is provided with a second control port, an air inlet channel, which communicates with the first chamber, and a first outlet air channel and a second outlet air channel respectively communicate with the second chamber and the outside world;

The closed sub-group is complementary set in the valve chamber, and a number of air holes are arranged on it;

A solenoid valve is installed in the first chamber, and is used to constantly close the first control port when it is not pushed by external force;

The first temperature control device is arranged in the second chamber and corresponds to the second control port, and is used to constantly close the second control port when it is not pushed by external force;

The second temperature control device is set at the gas outlet end of the second outlet flow channel, one end of which can sense the combustion temperature of the gas stove, and can be used to control whether the second outlet flow channel communicates with the outside world and change it according to the temperature change. flow;

The knob group is arranged at one end of the body and is connected with the shutter, the first temperature control device and the solenoid valve, and can be used to push the solenoid valve, drive the shutter group to rotate and link the first temperature control device.

The safety control switch of the gas stove of the utility model is an integrated design with three functions of sequential ignition, flameout protection and temperature control.

Description of drawings

Fig. 1 is the front view of preferred embodiment of the utility model;

Fig. 2 is the top view of the preferred embodiment of the utility model;

Fig. 3 is a sectional view along line 3-3 in Fig. 1;

Fig. 4 is a sectional view along line 4-4 in Fig. 2;

Fig. 5 is a schematic diagram of the action of the preferred embodiment of the present invention.

Detailed ways

Hereinafter, according to a preferred embodiment of the present invention, a further detailed description will be given in conjunction with the accompanying drawings.

First, please refer to Fig. 1 to Fig. 4, the safety control switch 10 of the preferred embodiment of the present invention is applied to gas stoves (such as gas stoves, ovens, ovens, heaters, etc.), and consists of a body 12, a closed Group 13, solenoid valve 14, first temperature control device 15, second temperature control device 16 and knob group 17 constitute.

The body 12 has a conical valve chamber 22 communicating with the first chamber 24 and the second chamber 26 inside. The valve chamber 22 communicates with the first chamber 24 through a gas flow channel 27, and the gas flow channel 27 The connection with the first chamber 24 is also provided with a first control port 28; the connection between the valve chamber 22 and the second chamber 26 is also provided with a second control port 30; the intake flow channel 32 communicates with the first On one side of the chamber 24 , the first outlet air passage 34 and the second outlet air passage 36 communicate with the second chamber 26 , the main fire igniter (not shown in the figure), and the second temperature control device 16 respectively.

The shutter group 13 is composed of a shutter 40 , a holding member 42 , a shutter rod 44 , a rotating body 46 and a leak-proof member 48 . The shutter 40 is arranged in the valve chamber 22, and its cross-section is in a conical shape complementary to the valve chamber 22. A shaft hole 50 runs through its axis, and an air groove 52 communicating with the shaft hole 50 is provided on the side. The holder 42 is A sleeve is fixed at one end of the shaft hole 50 , the closing rod 44 is placed in the holding member 42 and is located in the shaft hole 50 , the rotating body 46 is fixed at the other end of the closing rod 44 , and the leak-proof member 48 It is an O-ring, which is arranged on one end of the closing rod 44 protruding from the holder 42 .

The solenoid valve 14 is a solenoid valve used in the existing gas switch, and is arranged in the first chamber 24 and connected with a thermocouple of the gas switch to control whether the first control port 28 is opened.

The first temperature control device 15 is an existing fluid temperature controller, comprising a sealing plate 54, a membrane cover 56, an elastic member 58 and a temperature sensing member 60 between the sealing plate 54 and the membrane cover 56, the sealing plate 54 Connect the rotating body 46 and close the second control port 30 by the tension of the elastic member 58. The membrane cover 56 is a hollow cover, and the temperature sensing member 60 is arranged at an appropriate position of the gas stove (such as being placed in a pot on the gas stove) or in the oven) and communicate with the membrane cover 56 and the locking sealing plate 54, the membrane cover 56 and the inside of the temperature sensing element 60 are filled with a fluid (liquid or gas) with a high coefficient of thermal expansion, so when the temperature sensing element 60 senses When the proper position of the gas stove is heated up to a predetermined temperature, the membrane cover 56 can expand to push the elastic member 58 and the sealing plate 54 to move toward the second control port 30 .

The second temperature control device 16 is a conventional fluid temperature controller, including a hollow shell 62 , a retractable temperature control valve 64 and a temperature sensor 66 . The casing 62 is tubular and locked to the gas outlet end of the second gas outlet channel 36 , with a third control port 68 inside and an gas outlet 70 on the side, and the temperature control valve 64 is set inside the casing 62 And close the third control port 68, the temperature sensor 66 is arranged beside the furnace head of the gas stove and connected to the temperature control valve 64, the temperature sensor 66 and the temperature control valve 64 are filled with a fluid with a high thermal expansion coefficient (here is gas), therefore, when the temperature sensor 66 senses that the burner burns to an appropriate temperature, the fluid will expand so that the temperature control valve 64 no longer closes the third control port 68 .

The knob group 17 is an existing gas switch knob group, including a rotating shaft 72, a push member 74 and a driving member 76. Corresponding to the solenoid valve 14 , the driving member 76 is connected to the rotating shaft 72 and the pushing member 74 .

In addition, the safety control switch further includes an adjustment member 18, which is screwed to the position of the body 12 corresponding to the first outlet flow channel 34, and can be used to adjust the gas output volume of the first outlet flow channel 34 (cooperating with the gas output of liquefied or natural gas). and adjust).

Therefore, as shown in Figure 5, when the rotating shaft 72 of the knob group 17 of the present utility model is pressed and rotated, the driving member 76 can be driven by the rotating shaft 72 to push down the push member 74, and the push member 74 can be Push away the valve of electromagnetic valve 14, and this sealing plate 54 is then subjected to the effect that the inner end of temperature sensing element 60 moves and no longer closes the second control port 30 (rotating body 46 is in screw connection relation with the inner end of temperature sensing element 60, rotates When the body 46 rotates, the inner end of the temperature-sensing element 60 can be moved outward, thereby making the sealing plate 54, the membrane cover 56, and the elastic element 58 move synchronously), and the shutter 40 is rotated at the same time so that the gas groove 52 corresponds to the gas flow channel 27, the gas can enter the interior of the shutter 40 from the inlet flow channel 32 through the first control port 28 and the gas flow channel 27, and then flow into the first and second output flow channels 34, 36 through the second control port 30, and Carry out the action of sequential ignition.

The gas in the first outlet flow channel 34 flows to the main fire igniter for igniting the main fire, and the main fire can burn to the thermocouple and temperature sensor 66 of the gas switch, so that the thermocouple generates thermoelectric potential and the solenoid valve 14 is activated. , keep the first control port 28 unblocked.

The gas in the second outlet flow channel 36 flows into the second temperature control device 16, and when the temperature sensor 66 is heated to an appropriate temperature by the main fire (the internal gas expands to drive the temperature control valve 64), the temperature The control valve 64 no longer closes the third control port 68, so that the gas can flow to the burner of the gas stove for burning and igniting the main fire. The temperature control valve 64 gradually moves away from the third control port 68, Gradually increase the gas flow to make the flame grow from small to large, so that the main fire can be ignited first and then the main fire, and the slow ignition action can ensure that the gas stove will not cause deflagration.

Secondly, when the main fire of the gas stove goes out for some reason, the thermocouple no longer senses the heat, prompting the solenoid valve 14 to return to its original state, thereby closing the first control port 28, avoiding gas leakage, and achieving the effect of flameout protection .

In addition, the safety control switch 10 of the present invention also has the functions of constant temperature and temperature regulation.

When the temperature sensing element 60 senses that the temperature at the proper position of the gas stove exceeds the default value, the fluid inside it can expand (the membrane cover 56 also expands) to push the elastic element 58 and the sealing plate 54 towards the second pipe port 30 Move it to an appropriate position to reduce the flow of gas to cool down and produce a constant temperature function.

Moreover, when the rotating shaft 72 rotates, it drives the shutter 40 and the shutter rod 44 to rotate synchronously, and the shutter rod 44 is linked with the rotating body 46. Since the rotating body 46 is in a screw connection with the inner end of the temperature sensing element 60, the rotating When the body 46 rotates, the inner end of the temperature-sensing element 60 can be moved outward, and then the sealing plate 54, the membrane cover 56, and the elastic element 58 can be moved synchronously, and the gas flow rate entering the second control port 30 can be increased, thereby producing the function of temperature regulation.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model.

Claims (10)

1. A safety control switch for a gas stove, characterized in that the safety control switch includes: The main body is provided with a conical valve chamber communicating with the first chamber and the second chamber. The connection between the valve chamber and the first chamber is provided with a first control port. The valve chamber and the second chamber A second control port is provided at the joint, an air inlet channel communicates with the first chamber, a first outlet air channel and a second outlet air channel communicate with the second chamber and the outside world; The closed sub-group is complementary set in the valve chamber, and a number of air holes are arranged on it; A solenoid valve is installed in the first chamber, and is used to constantly close the first control port when it is not pushed by external force; The first temperature control device is arranged in the second chamber and corresponds to the second control port, and is used to constantly close the second control port when it is not pushed by external force; The second temperature control device is set at the gas outlet end of the second outlet flow channel, and one end of it can sense the combustion temperature of the gas stove, so as to control whether the second outlet flow channel communicates with the outside world and change traffic; The knob set is arranged at one end of the body and is connected with the shutter, the first temperature control device and the electromagnetic valve, so as to drive the shutter to rotate and push the first temperature control device and the electromagnetic valve. 2. The safety control switch for a gas stove as claimed in claim 1, wherein a gas flow passage connecting the valve chamber and the first chamber is further provided inside the body, and the first control port is located at the gas flow The junction of the road and the first chamber. 3. The safety control switch of a gas stove according to claim 1, wherein the safety control switch further includes an adjustment member, which is movably arranged at a position of the main body corresponding to the first air outlet channel for Adjust the gas outlet volume of the first outlet channel. 4. The safety control switch of a gas stove as claimed in claim 1, wherein said closing subgroup comprises: Shutter, the shaft center of the shutter is pierced with a shaft hole, and the side is provided with an air groove connecting the shaft hole; The shutter rod is inserted into the shaft hole of the shutter; The rotating body is arranged at one end of the closing rod and connected with the control valve. 5. The safety control switch for a gas stove as claimed in claim 4, wherein the shutter group further includes a holding member, which is arranged in the shaft hole of the shutter, and the shutter rod is held by the holding member fixed in the shaft hole. 6 . The safety control switch for a gas stove as claimed in claim 4 , wherein the closing subgroup further includes a leak-proof part, which is arranged at one end of the holding part corresponding to the knob group. 7 . 7. The safety control switch for a gas stove according to claim 1, wherein the first temperature control device comprises a sealing plate, a membrane cover, and an elastic member interposed between the sealing plate and the membrane cover, and the sealing plate Corresponds to the second control port and connects the closed subgroup. 8. The safety control switch for a gas stove as claimed in claim 7, wherein the first temperature control device further includes a temperature sensing element, which is arranged at a predetermined position of the gas stove and connected to a membrane cover, and the membrane cover It is a hollow cover, and the temperature sensing element and the membrane cover are filled with a fluid with a high thermal expansion coefficient. 9. The safety control switch for gas stoves according to claim 1, wherein the second temperature control device comprises: a hollow casing, the casing is connected to the gas outlet end of the second outlet channel, and one side thereof is provided with an gas outlet; A temperature control valve is arranged in the housing and corresponds to the air outlet; The temperature sensor is arranged next to the burner of the gas stove and connected to the temperature control valve. The temperature sensor and the temperature control valve are filled with a fluid with a high thermal expansion coefficient. 10. The safety control switch of a gas stove as claimed in claim 9, wherein a third control port is provided at a position corresponding to the gas outlet in the housing, and the temperature control valve is used to control whether the second outlet gas channel is open or not. Connected to the air outlet.

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