Barbecue oven valve with automatic fuel gas cut-off function

Abstract

According to the barbecue oven valve with the automatic fuel gas cut-off function, when the temperature of the periphery of the adjusting valve is too high, the thermal deformation strip expands in the length direction along with temperature rise according to the thermal expansion principle, and due to the fact that the fixed end of one end of the thermal deformation strip is fixed to the limiting frame, the thermal deformation strip can not deform easily. The movable end of the other end of the thermal deformation strip pushes the adjusting shaft to move along with thermal expansion, so that gas flow of the adjusting valve is cut off or reduced, combustion of the barbecue oven is reduced, and therefore the barbecue oven is prevented from being damaged due to long-time overload combustion, a fuel conveying pipeline is prevented from being damaged, and the adjusting valve is prevented from being burnt red. Meanwhile, heat energy of the barbecue oven can be prevented from being conducted to the adjusting valve and the fuel supply area through the fuel conveying pipeline, and the safety performance of the barbecue oven and the adjusting valve is improved; the utility model belongs to the technical field of gas regulating valves.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas regulating valves, and in particular relates to a barbecue stove valve with a gas automatic cutting-off function. Background Art

[0002] The barbecue valve is an important part of the barbecue, which is responsible for controlling the flow of gas and thus the size of the flame. During barbecue, if the barbecue is overloaded for a long time, the heat of the barbecue will be transferred to the regulating valve through the air or pipeline, which will make the regulating valve very likely to be burned red, resulting in gas explosion, and easily causing damage to the regulating valve and unable to close and control the gas. Utility Model Content

[0003] The utility model aims to provide a barbecue stove valve with a gas automatic cut-off function to solve the technical problems described in the background technology.

[0004] The barbecue stove valve with automatic gas shut-off function comprises a bracket, a regulating valve and a limit frame are installed on the bracket, the regulating valve is provided with an adjusting shaft, a heat deformation strip which can be deformed according to the surrounding temperature is arranged in the limit frame, one end of the heat deformation strip is a fixed end fixed to the limit frame, and the other end of the heat deformation strip is a movable end which is transmission-connected to the adjusting shaft, so as to push the adjusting shaft to move when the heat deformation strip is deformed.

[0005] According to the technical solution, the utility model can achieve the following beneficial effects:

[0006] When the temperature around the regulating valve is too high, the heat deformation strip expands along the length direction as the temperature rises according to the principle of thermal expansion. Since the fixed end of one end of the heat deformation strip is fixed to the limit frame, the movable end of the other end of the heat deformation strip pushes the regulating shaft to move as the heat expands, thereby cutting off or reducing the gas flow of the regulating valve to reduce the burning of the barbecue oven; thereafter, when the surrounding of the regulating valve is cooled, the heat deformation strip shrinks as the temperature decreases according to the principle of thermal expansion to drive the regulating shaft to move and restore the gas flow of the regulating valve to a normal amount. Therefore, the utility model can avoid the barbecue oven from being damaged due to long-term overload combustion, damage to the fuel delivery pipeline, and red-burning of the regulating valve, and can also prevent the heat energy of the barbecue oven from being transmitted to the regulating valve and the fuel supply area through the fuel delivery pipeline, thereby improving the safety performance of the barbecue oven and the regulating valve.

[0007] In order to further optimize the above technical solution, it can be optionally combined with one or more of the following implementation methods without conflict.

[0008] In some embodiments, a safety rod that can melt at a set temperature is installed on the bracket, and the safety rod is used to prevent the thermal deformation strip from deforming and pushing the adjustment shaft to close the adjustment valve when the set temperature is not reached;

[0009] According to the above technical solution, when the temperature around the regulating valve is too high, the safety lever is melted by the current temperature. At this time, the thermal deformation strip expands outward with elastic deformation. Since one fixed end of the thermal deformation strip is fixed to the limit frame, the movable end of the other end of the thermal deformation strip drives the regulating shaft to move with elastic deformation, thereby realizing cutting off or reducing the gas flow of the regulating valve.

[0010] In some embodiments, a gear is fixed on the regulating shaft, a slide rail is installed on the bracket, a slider slides on the slide rail, and a rack meshing with the gear is installed on the slider; the movable end of the thermal deformation strip is connected to the slider by a bearing.

[0011] According to the above technical solution, when the thermal deformation strip expands along the length direction due to thermal expansion or returns to its original shape by elastic deformation with the increase of temperature through the thermal expansion principle, the movable end of the thermal deformation strip pushes the slider to slide on the slide rail, the slider drives the rack to move, and the rack drives the gear to drive the regulating shaft to rotate, thereby realizing adjusting or cutting off the gas flow of the regulating valve.

[0012] In some embodiments, a runner is fixed on the regulating shaft, an outward protruding portion protrudes from the outer periphery of the runner, and a microswitch is installed on the bracket beside the outer periphery of the runner. When the regulating shaft drives the runner to rotate, the protruding portion presses on the microswitch.

[0013] According to the above technical solution, when adjusting the gas flow of the regulating shaft by rotating the regulating shaft, the regulating shaft synchronously drives the runner to rotate. When the runner rotates to a certain stroke, the protruding portion of the runner will press on the microswitch. At this time, the microswitch can send a signal to the gas supply device to terminate the gas supply or automatically output gas, thereby further improving safety.

[0014] In some embodiments, at least two microswitches are installed on the bracket beside the outer periphery of the runner, one of the microswitches is used for signal connection with the igniter, and the other microswitch is used for signal connection with the fuel supply device.

[0015] According to the above technical solution, when the runner rotates to a certain stroke, the protruding portion of the runner will press on a certain microswitch, thereby sending a signal to the igniter or the fuel supply device through the microswitch, so that the igniter gives ignition, so that the fuel supply device outputs gas or terminates the gas supply. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments in the present invention, the following will briefly describe the drawings and reference numerals required in the description of the specific embodiments.

[0017] Figure 1 It is a schematic structural diagram of the regulating valve part of the present invention;

[0018] Figure 2 It is the structural layout diagram of the position where the microswitch of the present utility model is located;

[0019] Figure 3 It is the structural layout diagram of the limit frame of the present utility model.

[0020] Reference numerals:

[0021] 1. Bracket; 2. Regulating valve; 21. Adjusting shaft; 3. Limit frame; 31. Thermal deformation strip; 311. Fixed end; 312. Movable end; 32. Safety lever; 33. Gear; 34. Slide rail; 35. Slide block; 351. Rack; 4. Runner; 41. Outer convex part; 42. Microswitch. Detailed implementation manners

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0023] Embodiment 1

[0024] As Figures 1 to 3 shown, this embodiment provides a barbecue grill valve with an automatic gas cut-off function, which includes a bracket 1, and a regulating valve 2, a microswitch 42, a slide rail 34 and a limit frame 3 are installed on the bracket 1.

[0025] The regulating valve 2 is provided with an adjusting shaft 21, a gear 33 and a runner 4 are fixed on the adjusting shaft 21, an outwardly protruding outer convex part 41 is provided on the outer periphery of the runner 4, at least two microswitches 42 are located on the outer periphery of the runner 4, one of the microswitches 42 is used for signal connection with the igniter, and the other microswitch 42 is used for signal connection with the fuel supply device. When the adjusting shaft 21 drives the runner 4 to rotate, the outer convex part 41 presses on the microswitch 42. Another control valve for manually controlling the flow is connected to the input port or output port channel of the regulating valve 2.

[0026] A slide block 35 slides on the slide rail 34, and a rack 351 meshing with the gear 33 is installed on the slide block 35.

[0027] There is a thermal deformation strip 31 in the limit frame 3 that can deform according to the surrounding temperature. One end of the thermal deformation strip 31 is a fixed end 311 fixed to the limit frame 3, and the other end of the thermal deformation strip 31 is a movable end 312 bearing-connected to the slide block 35 to push the slide block 35 to move when the thermal deformation strip 31 deforms.

[0028] The following is the working description of the barbecue grill valve of this embodiment.

[0029] When the temperature around the regulating valve 2 is too high, the thermal deformation strip 31 expands thermally along its length with the increase in temperature by the principle of thermal expansion. Since the fixed end 311 at one end of the thermal deformation strip 31 is fixed to the limiting frame 3, the movable end 312 at the other end of the thermal deformation strip 31 pushes the sliding block 35 to slide on the slide rail 34 as it expands thermally. The sliding block 35 drives the rack 351 to move, and the rack 351 drives the gear 33 to drive the regulating shaft 21 to rotate, so as to cut off or reduce the gas flow of the regulating valve 2 and reduce the combustion of the barbecue grill.

[0030] After the temperature around the regulating valve 2 cools down, the thermal deformation strip 31 contracts as the temperature decreases by the principle of thermal expansion. At this time, the movable end 312 of the thermal deformation strip 31 pushes the sliding block 35 to slide reversely on the slide rail 34. The sliding block 35 drives the rack 351 to move reversely, and the rack 351 drives the gear 33 to drive the regulating shaft 21 to rotate reversely, so as to restore the gas flow of the regulating valve 2 to the normal amount.

[0031] Embodiment 2

[0032] As Figures 1 to 3 shown, this embodiment provides a barbecue grill valve with an automatic gas cut-off function, which includes a bracket 1. The bracket 1 is equipped with a regulating valve 2, a micro switch 42, a slide rail 34, a limiting frame 3 and a safety lever 32.

[0033] The regulating valve 2 is provided with a regulating shaft 21. A gear 33 and a runner 4 are fixed on the regulating shaft 21. An outwardly protruding portion 41 is provided on the outer circumference of the runner 4. At least two of the micro switches 42 are located on the outer circumference of the runner 4. One of the micro switches 42 is used for signal connection with the igniter, and the other micro switch 42 is used for signal connection with the fuel supply device. When the regulating shaft 21 drives the runner 4 to rotate, the outwardly protruding portion 41 presses on the micro switch 42. A control valve for manually controlling the flow rate is connected to the input port or output port channel of the regulating valve 2.

[0034] A sliding block 35 slides on the slide rail 34, and a rack 351 meshing with the gear 33 is installed on the sliding block 35.

[0035] Inside the limit frame 3, there is a thermal deformation strip 31. One end of the thermal deformation strip 31 is a fixed end 311 fixed to the limit frame 3, and the other end of the thermal deformation strip 31 is a movable end 312 bearing-connected to the slider 35. The thermal deformation strip 31 is an elastic deformation body in a bent state and capable of elastically deforming to a straight state. The safety lever 32 is used to support the movable end 312 of the thermal deformation strip 31. The safety lever 32 can melt at a set temperature. When the set temperature is not reached, the safety lever 32 prevents and restricts the thermal deformation strip 31 from elastically deforming to a straight state. The movable end 312 of the thermal deformation strip 31 is bearing-connected to the slider 35.

[0036] The following is the working description of the barbecue grill valve described in this embodiment.

[0037] When the temperature around the regulating valve 2 is too high, the safety lever 32 is melted by the current temperature. At this time, the thermal deformation strip 31 expands outward with elastic deformation. Since the fixed end 311 at one end of the thermal deformation strip 31 is fixed to the limit frame 3, the movable end 312 at the other end of the thermal deformation strip 31 elastically deforms and pushes the slider 35 to slide on the slide rail 34. The slider 35 drives the rack 351 to move, and the rack 351 drives the gear 33 to drive the adjusting shaft 21 to rotate, so as to cut off or reduce the gas flow of the regulating valve 2, reduce the combustion of the barbecue grill, and thus achieve the protection of the barbecue grill and the regulating valve 2.

[0038] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

1. A barbecue grill valve with an automatic gas cut-off function, which comprises a bracket (1), the bracket (1) is provided with a regulating valve (2) and a limit frame (3), the regulating valve (2) is provided with a regulating shaft (21), and is characterized in that: The limit frame (3) contains a heat deformation strip (31) that can be deformed according to the surrounding temperature. One end of the heat deformation strip (31) is a fixed end (311) fixed to the limit frame (3), and the other end of the heat deformation strip (31) is a movable end (312) that is transmission-connected to the adjustment shaft (21) so as to push the adjustment shaft (21) to move when the heat deformation strip (31) is deformed.

2. The barbecue stove valve with an automatic gas cut-off function according to claim 1, characterized in that: The support (1) is provided with a safety rod (32) which can melt at a set temperature. When the set temperature is not reached, the safety rod (32) is used to prevent the thermal deformation strip (31) from deforming and pushing the adjustment shaft (21) to close the adjustment valve (2).

3. A barbecue grill valve with an automatic gas cut-off function according to claim 1 or 2, characterized in that: A gear (33) is fixed on the adjusting shaft (21); a slide rail (34) is installed on the bracket (1); a slider (35) slides on the slide rail (34); a rack (351) meshing with the gear (33) is installed on the slider (35); and a movable end (312) of the thermal deformation strip (31) is connected to a bearing of the slider (35).

4. A barbecue grill valve with an automatic gas cut-off function according to claim 1, characterized in that: A rotating wheel (4) is fixed on the adjusting shaft (21), an outer convex portion (41) protruding outward is provided on the outer periphery of the rotating wheel (4), a micro switch (42) located beside the outer periphery of the rotating wheel (4) is installed on the bracket (1), and when the adjusting shaft (21) drives the rotating wheel (4) to rotate, the outer convex portion (41) presses on the micro switch (42).

5. The barbecue stove valve with an automatic gas cut-off function according to claim 4, characterized in that: The bracket (1) is equipped with at least two micro switches (42) located on the periphery of the rotating wheel (4), one of the micro switches (42) is used to connect with an igniter signal, and the other micro switch (42) is used to connect with a fuel supply device signal.

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