An automatic gas valve structure for a coal-fired thermal differential power generation device

Abstract

This utility model relates to the field of gas stoves, and discloses an automatic gas valve structure for a gas stove thermoelectric generator. It includes a thermoelectric generator unit, an electromagnetic valve mounted on the gas inlet pipe of the gas stove, a trigger switch located below the rotary switch of the gas stove, and a small blower mounted on the air inlet pipe of the gas stove. A guide hole is provided on the stove surface. The trigger switch includes an upper movable rod slidably fitted within the guide hole and a bracket located below the stove surface. Initially, the upper end of the upper movable rod contacts the rotary switch. A lower fixed rod, coaxial with the upper movable rod, is mounted on the bracket. A lower contact piece is located at the upper end of the lower fixed rod, and an upper contact piece is located at the lower end of the upper movable rod. When the user uses the gas stove, pressing the rotary switch allows the upper and lower contact pieces to make conductive contact. The upper and lower contact pieces form a closed switch, which is connected in series with the gas stove's battery, which powers the electromagnetic valve.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, specifically to an automatic gas valve structure for a gas stove temperature difference power generation device. Background Technology

[0002] Gas stoves, also known as gas cooktops, operate primarily on the principle of releasing heat energy through gas combustion. Their core function is to generate a flame by controlling the mixing and combustion of gas and air. However, in actual use, the flame on a gas stove can suddenly go out due to various reasons, such as water spilling on the burner. This can cause gas leaks, and if the user's emergency response is inappropriate, it can easily lead to a safety accident, posing a significant danger. Furthermore, existing gas stoves typically have a hole at the end of the gas inlet valve, allowing air to be drawn in naturally. This method results in a small air intake, easily leading to incomplete combustion. Those skilled in the art might consider adding a blower to increase the air intake and improve combustion efficiency; however, blowers require external mains power, posing installation limitations and safety hazards.

[0003] Based on the above problems, this utility model proposes an automatic gas valve structure for a coal gas temperature difference power generation device. Utility Model Content

[0004] To address the problems mentioned in the background above, this utility model provides an automatic gas valve structure for a coal gas temperature difference power generation device.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows.

[0006] An automatic gas valve structure for a coal gas temperature difference power generation device includes: a temperature difference power generation unit, an electromagnetic valve installed on the gas inlet pipe of a gas stove, a trigger switch installed below the rotary switch of the gas stove, and a small blower installed on the air inlet pipe of the gas stove.

[0007] The gas stove has guide holes on its surface, and the trigger switch includes an upper movable rod that slides inside the guide holes and a bracket located below the surface.

[0008] The upper movable lever is located directly below the rotary switch. Initially, the upper end of the upper movable lever is in contact with the rotary switch.

[0009] The bracket is equipped with a lower fixed rod that is coaxial with the upper movable rod. The upper end of the lower fixed rod is equipped with a lower contact piece, and the lower end of the upper movable rod is equipped with an upper contact piece. When the user uses the gas stove, pressing the knob switch will make the upper contact piece and the lower contact piece make conductive contact. The upper contact piece and the lower contact piece form a closed switch. The closed switch is connected in series with the gas stove's battery, which is used to power the solenoid valve.

[0010] As a further improvement and optimization of this utility model, the thermoelectric power generation unit includes a thermoelectric element, and a heat-conducting rod is provided at the hot end of the thermoelectric element, with the end of the heat-conducting rod close to the burner head of the gas stove.

[0011] As a further improvement and optimization of this utility model, the upper movable rod is provided with an upper wiring hole for wiring the upper contact piece, and the lower fixed rod is provided with a lower wiring hole for wiring the lower contact piece.

[0012] As a further improvement and optimization of this utility model, a fixing ring is provided on the outside of the upper movable rod, and a spring is provided between the fixing ring and the bracket.

[0013] As a further improvement and optimization of this utility model, a magnetic ring is embedded at the lower end of the upper movable rod, and an electromagnet is set on the bracket below the upper movable rod. The power generated by the thermoelectric generator is used to supply the electromagnet. When the electromagnet is energized, the magnetic attraction force generated between it and the magnetic ring is greater than the maximum elastic force of the spring.

[0014] As a further improvement and optimization of this utility model, the lower end of the upper movable rod is provided with a slot, and the upper end of the lower fixed rod is slidably sleeved in the slot.

[0015] As a further improvement and optimization of this utility model, a ball bearing is embedded in the upper end of the upper movable rod.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] In this solution, the user operates the same way as with existing gas stoves. First, press the knob switch to activate the igniter. Simultaneously, the trigger switch is activated, opening the solenoid valve. Gas can then be smoothly and steadily delivered to the burner head through the gas inlet pipe, igniting the flame. At this point, the thermoelectric generator starts, providing power to the trigger switch and the small blower, keeping the solenoid valve open and the small blower running continuously. When the flame goes out, the thermoelectric generator can no longer generate electricity, so the solenoid valve closes and the small blower stops running, achieving the purpose of flameout protection. In addition, powering the trigger switch and small blower through thermoelectric generation can significantly reduce power consumption and ensure more complete gas combustion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 A 3D model of the cooktop, rotary switch, and trigger switch;

[0020] Figure 3 A front view of the cooktop, rotary switches, and trigger switches;

[0021] Figure 4 This is a schematic diagram of the trigger switch.

[0022] Figure 5 This is a cross-sectional view of the trigger switch.

[0023] The labels in the attached diagram are:

[0024] 1. Stovetop; 2. Knob switch; 3. Trigger switch; 301. Bracket; 302. Lower fixed rod; 303. Upper movable rod; 304. Lower contact piece; 305. Upper contact piece; 306. Slot; 307. Ball bearing; 308. Lower wiring hole; 309. Upper wiring hole; 310. Electromagnet; 311. Magnetic ring; 312. Fixing ring; 313. Spring. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Reference Figures 1-5 An automatic gas valve structure for a coal gas temperature difference power generation device includes a temperature difference power generation unit (not shown in the figure), an electromagnetic valve installed on the gas inlet pipe of the gas stove, a trigger switch 3 installed below the rotary switch 2 of the gas stove, and a small blower installed on the air inlet pipe of the gas stove (not shown in the figure).

[0027] In use, the process is the same as with any existing gas stove. The user first presses the knob switch 2 to activate the igniter. At the same time, the trigger switch 3 is activated, opening the solenoid valve. Gas can then be smoothly and steadily delivered to the burner head through the gas inlet pipe, igniting the flame. At this point, the thermoelectric generator starts, providing power to the trigger switch 3 and the small blower, keeping the solenoid valve open and the small blower running continuously. When the flame goes out, the thermoelectric generator can no longer generate electricity, so the solenoid valve closes and the small blower stops running, thus achieving flameout protection. In addition, powering the trigger switch 3 and the small blower through thermoelectric generators significantly reduces power consumption and ensures more complete combustion of the gas.

[0028] Specifically, the thermoelectric power generation unit adopts the Seebeck effect, which converts the waste heat of the flame into electrical energy through a thermoelectric element. This is achievable with existing technology. For example, a heat-conducting rod made of thermally conductive material conducts the heat of the flame to the hot end of the thermoelectric element. The cold end of the thermoelectric element is far away from the burner of the gas stove and dissipates heat naturally. Therefore, there is a temperature difference between the hot and cold ends of the thermoelectric element, which enables thermoelectric power generation.

[0029] Specifically, refer to Figures 2-5 The gas stove's cooktop surface 1 is equipped with guide holes.

[0030] The trigger switch 3 includes an upper movable rod 303 that is slidably sleeved in the guide hole and a bracket 301 located below the stove surface 1.

[0031] The upper movable rod 303 is located directly below the rotary switch 2. Initially, the upper end of the upper movable rod 303 is in contact with the rotary switch 2. When the user uses the gas stove, they usually press the rotary switch 2 first and then turn it. During this process, the upper movable rod 303 will move downwards due to the pressure of the rotary switch 2. Afterwards, when the rotary switch 2 rotates, in order to reduce the friction between the rotary switch 2 and the upper movable rod 303, a ball bearing 307 can be embedded in the upper end of the upper movable rod 303 to replace the sliding friction with rolling friction, thereby making the rotation of the rotary switch 2 more stable and smooth.

[0032] The bracket 301 is provided with a lower fixed rod 302 that is coaxial with the upper movable rod 303.

[0033] The lower fixed rod 302 has a lower contact piece 304 at its upper end, and the upper movable rod 303 has an upper contact piece 305 at its lower end.

[0034] A retaining ring 312 is provided on the outside of the upper movable rod 303, and a spring 313 is provided between the retaining ring 312 and the bracket 301.

[0035] When the knob switch 2 is pressed and the upper movable rod 303 is moved down, the upper contact 305 and the lower contact 304 will come into contact. The upper contact 305 and the lower contact 304 form a closed switch. The closed switch is connected in series with the battery, which is used to power the solenoid valve. Therefore, the solenoid valve can be opened and the spring 313 can be compressed.

[0036] Furthermore, the upper movable rod 303 is provided with an upper wiring hole 309 for wiring the upper contact piece 305, and the lower fixed rod 302 is provided with a lower wiring hole 308 for wiring the lower contact piece 304.

[0037] Furthermore, gas stoves are generally installed in the kitchen, where grease is present. To prevent grease from getting on the surfaces of the upper contact plate 305 and lower contact plate 304, affecting their use, refer to... Figure 5 The lower end of the upper movable rod 303 is provided with a slot 306, and the upper end of the lower fixed rod 302 is slidably sleeved in the slot 306. Its technical advantage is that it can make the upper contact piece 305 and the lower contact piece 304 located in the slot 306, protecting them from oil stains for a long time.

[0038] A magnetic ring 311 is also embedded at the lower end of the upper movable rod 303. An electromagnet 310 is installed on the bracket 301 below the upper movable rod 303. The electricity generated by the thermoelectric generator is used to supply the electromagnet 310. When the electromagnet 310 is energized, the magnetic attraction force generated between it and the magnetic ring 311 is greater than the maximum elastic force of the spring 313.

[0039] The working principle of this utility model:

[0040] When using a gas stove, users typically press knob switch 2 first, then turn knob switch 2. During this process:

[0041] Pressing the rotary switch 2 will cause the upper movable rod 303 to move downward, thereby causing the upper contact 305 to contact the lower contact 304. The upper contact 305 and the lower contact 304 form a closed switch. The closed switch is connected in series with a battery, which powers the solenoid valve. Therefore, the solenoid valve can be opened and the spring 313 can be compressed. During this process, it should be noted that due to assembly errors and manufacturing precision errors, there will be a certain error between the displacement of the rotary switch 2 when it is pressed and the displacement required for the upper contact 305 and the lower contact 304 to make contact. However, since the design of conductive contacts in the prior art generally has elastic deformation, it is possible to make the upper contact 305 and the lower contact 304 make conductive contact by pressing the rotary switch 2, which will not be elaborated further.

[0042] Then, the knob switch 2 is rotated to ignite a flame, which is achievable with existing technology and will not be described in detail.

[0043] After the flame is ignited, the thermoelectric generator immediately generates electricity, which supplies the electromagnet 310, thereby keeping the closed switch continuously closed and the solenoid valve continuously open, ensuring a stable and smooth gas supply. At the same time, the electricity also supplies a small blower to make the gas burn more completely.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A coal gas thermoelectric power generation device automatic gas valve structure, characterized by, include: Thermoelectric generator, solenoid valve installed on gas inlet pipe of gas stove, trigger switch (3) installed below knob switch (2) of gas stove and small blower installed on air inlet pipe of gas stove; The gas stove has a guide hole on the stove surface (1), and the trigger switch (3) includes an upper movable rod (303) that is slidably sleeved in the guide hole and a bracket (301) located below the stove surface (1). The upper movable lever (303) is located directly below the rotary switch (2). Initially, the upper end of the upper movable lever (303) is in contact with the rotary switch (2). The bracket (301) is provided with a lower fixed rod (302) coaxial with the upper movable rod (303). The upper end of the lower fixed rod (302) is provided with a lower contact piece (304), and the lower end of the upper movable rod (303) is provided with an upper contact piece (305). When the user uses the gas stove, pressing the knob switch (2) can make the upper contact piece (305) and the lower contact piece (304) make conductive contact. The upper contact piece (305) and the lower contact piece (304) form a closed switch. The closed switch is connected in series with the gas stove's battery, which is used to power the solenoid valve.

2. The automatic gas valve structure of a coal gas thermoelectric power generation device according to claim 1, characterized in that, The thermoelectric generator unit includes a thermoelectric element, and a heat-conducting rod is provided at the hot end of the thermoelectric element. The end of the heat-conducting rod is close to the burner of the gas stove.

3. The automatic gas valve structure of a coal gas thermoelectric power generation device according to claim 1, characterized in that, The upper movable rod (303) is provided with an upper wiring hole (309) for wiring the upper contact piece (305), and the lower fixed rod (302) is provided with a lower wiring hole (308) for wiring the lower contact piece (304).

4. The automatic gas valve structure of a coal gas thermoelectric power generation device according to claim 1, characterized in that, A retaining ring (312) is provided on the outside of the upper movable rod (303), and a spring (313) is provided between the retaining ring (312) and the bracket (301).

5. The automatic gas valve structure for a coal-fired thermal differential power generation device according to claim 4, characterized in that, A magnetic ring (311) is embedded at the lower end of the upper movable rod (303). An electromagnet (310) is installed on the bracket (301) below the upper movable rod (303). The electricity generated by the thermoelectric generator is used to supply the electromagnet (310). When the electromagnet (310) is energized, the magnetic attraction force generated between it and the magnetic ring (311) is greater than the maximum elastic force of the spring (313).

6. The automatic gas valve structure for a coal-fired thermal differential power generation device according to claim 1, characterized in that, The lower end of the upper movable rod (303) is provided with a slot (306), and the upper end of the lower fixed rod (302) is slidably sleeved in the slot (306).

7. The automatic gas valve structure for a coal-fired thermal differential power generation device according to claim 1, characterized in that, The upper end of the upper movable rod (303) is inlaid with ball bearings (307).

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