Thermal induction extinguisher, valve assembly and gas stove

Abstract

The utility model discloses a thermal induction extinguisher, a valve assembly and a gas stove. A metal corrugated pipe is arranged in the thermal induction extinguisher, a plurality of rubber gaskets are sleeved outside the metal corrugated pipe, a hollow area used for containing lubricating oil is arranged inside the metal corrugated pipe, and the position of the hollow area corresponds to the position of the rubber gaskets. A plurality of through holes are formed in the pipe wall of the metal corrugated pipe, and lubricating oil in the hollow area flows out through the through holes to lubricate the rubber gasket; the end of the hollow area is further provided with a bolt for blocking the hollow area S. The bolt can be screwed out so that lubricating oil can be supplemented. The thermal induction extinguisher is improved, smoothness and tightness in daily use are further guaranteed, and the safety coefficient is improved. The utility model further discloses a valve assembly comprising the thermal induction extinguisher. The utility model further discloses a gas stove comprising the valve assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a thermal induction flameout device, a valve assembly and a gas stove. Background Art

[0002] The applicant of this utility model patent (hereinafter referred to as "this application") submitted a utility model patent application (hereinafter referred to as "the prior application") on January 26, 2024, requesting protection of the applicant's first-generation product; its application number is: 202420188814.1, and the prior application has not been published before the filing date of this application. The prior application records a valve assembly and a gas stove with a flameout protection device. On the basis of the existing valve assembly and gas stove, a flameout protection device is provided on the outside of the stove eye, which has a simple structure, flexible triggering, accurate reset, and is not easy to damage.

[0003] Please refer to Figures 1 to 6 ,in, Figure 1 This is a usage scenario diagram of the valve assembly with flameout protection device previously applied for. Figure 2 This is a three-dimensional structural diagram of a valve assembly with a flameout protection device previously applied for. Figure 3 This is a plan view of the valve assembly with flameout protection device previously applied for. Figure 4 for Figure 3 AA cross-sectional diagram of Figure 5 This is a three-dimensional assembly diagram of the flameout protection device in the prior application. Figure 6 It is a cross-sectional schematic diagram of the flameout protection device in the prior application.

[0004] The application records a thermal induction flameout device, which is a product on the market and includes: a metal bellows, a thermocouple temperature sensor, and a solenoid valve, wherein the thermocouple temperature sensor is arranged at one end of the metal bellows and is used to detect the temperature of the gas inlet passage, and the solenoid valve is arranged at the other end of the metal bellows and is electrically connected to the thermocouple temperature sensor; the utility model uses a thermocouple temperature sensor for temperature monitoring, and when the heat of the stove decreases, the solenoid valve linked to the thermocouple temperature sensor loses its magnetic force, and the adsorbed electromagnetic sheet automatically rebounds to block the gas; and when the heat rises, the thermocouple temperature sensor senses the heat, and the solenoid valve is reconnected, the solenoid valve pin is reset, and the gas is reopened. In this way, the gas can be automatically controlled without human intervention.

[0005] Please refer to Figure 7As shown in FIG. 1 , it is a partially enlarged view of a commercially available thermal induction flameoutlet; in the commercially available thermal induction flameoutlet, in order to ensure sealing and lubrication, a plurality of rubber washers 2042 are mounted on the outside of the metal bellows 2041, and lubricating oil is applied to the rubber washers. However, the applicant received the following feedback from the customer: after a period of use, the thermal induction flameoutlet has slid back and forth many times, and the lubricating oil is becoming less and less, and the rubber washers are increasingly worn; not only does the thermal induction flameoutlet get stuck when it reciprocates, but the wear of the rubber washers also causes gas to leak easily, posing a threat to safety in use.

[0006] In addition, once the commercially available thermal induction flameout device is initially installed into the valve assembly and gas stove, the user is not allowed to disassemble it for safety reasons; that is, the user cannot add lubricating oil to the rubber gasket during daily use, and it can only be repaired and maintained by professional after-sales service personnel at regular intervals. Utility Model Content

[0007] In order to overcome the defects of the prior art, the utility model provides a thermal induction flameout device, a valve assembly and a gas stove.

[0008] One of the purposes of the utility model is to provide a thermal induction flameout device, wherein a metal bellows is provided in the thermal induction flameout device, a plurality of rubber gaskets are sleeved on the outside of the metal bellows, a hollow area for containing lubricating oil is provided inside the metal bellows, and the position of the hollow area corresponds to the position of the rubber gasket; a plurality of through holes are provided on the tube wall of the metal bellows, and the through holes are used for the lubricating oil in the hollow area to flow out and lubricate the rubber gasket; a bolt for sealing the hollow area S is also provided at the end of the hollow area, and the bolt can be screwed out for replenishing the lubricating oil.

[0009] The second object of the utility model is to provide a valve assembly including the above-mentioned thermal induction flameout device, which includes a flameout protection device and a gas three-way valve that can be detachably connected; wherein,

[0010] The flameout protection device comprises: a push switch, a limit rod, a linkage rod, a spring, a threaded block, a limit tube and a switch valve; wherein the bottom end of the push switch is connected to the top end of the limit rod; the limit rod is provided with a limit platform adapted to the limit tube, and the bottom end is connected to the top end of the linkage rod; the spring is sheathed on the linkage rod; the top end of the spring abuts against the top end of the linkage rod, and the bottom end is connected to the threaded block; the external thread of the threaded block is adapted to the internal thread of the bottom end of the limit tube; the bottom end of the linkage rod is connected to the switch valve;

[0011] The thermal induction flameout device is arranged in the gas three-way valve.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Preferably, the gas three-way valve also includes: a gas inlet channel, a main fire gas channel and a permanent fire gas channel, wherein the gas inlet channel supplies gas to enter the gas three-way valve, the main fire gas channel supplies gas to be connected to the main fire port of the stove eye, and the permanent fire gas channel supplies gas to be connected to the permanent fire port of the stove eye; a gas valve adapted to the switch valve is provided in the main fire gas channel.

[0014] Preferably, the thermal induction flameout device also includes a thermocouple temperature sensor and a solenoid valve, wherein the thermocouple temperature sensor is arranged at one end of the metal bellows and is used to detect the temperature of the gas intake passage, and the solenoid valve is electrically connected to the thermocouple temperature sensor.

[0015] Preferably, a buffer structure is further provided in the flameout protection device. The buffer structure is provided at the connection between the push switch and the limit rod and includes a plurality of alternately arranged protrusions and recesses, and a rubber ring is provided in the recess.

[0016] Preferably, the bottom end of the limiting tube is also provided with an external thread for threaded connection of the flameout protection device with the gas three-way valve.

[0017] Preferably, a clamping portion is further provided at the bottom end of the position limiting tube for clamping and connecting the flameout protection device with the gas three-way valve.

[0018] Preferably, the bottom of the switch valve is designed to be concave, so that the switch valve can be sleeved outside the gas valve.

[0019] Preferably, the gas three-way valve also includes a main fire pressure-stabilizing flow regulator and a pilot fire pressure-stabilizing flow regulator; the main fire pressure-stabilizing flow regulator is embedded in the main fire gas channel, used to adjust the flow of the main fire and stabilize the pressure; the pilot fire pressure-stabilizing flow regulator is embedded in the pilot fire gas channel, used to adjust the flow of the pilot fire and stabilize the pressure.

[0020] Further preferably, the main fire pressure-stabilizing flow regulator and the pilot fire pressure-stabilizing flow regulator are both provided with front end knobs for the user to rotate and adjust.

[0021] The third object of the utility model is to provide a gas stove, wherein a through hole is arranged outside the stove eye of the gas stove, and a push switch in the valve assembly is movably inserted into the through hole.

[0022] Compared with the prior art, the utility model can produce the following beneficial technical effects:

[0023] 1. The utility model has a simple structure, flexible triggering, accurate reset, and is not easy to damage. As a second-generation upgraded product, it is improved based on the commercially available thermal induction flameout, further ensuring the smoothness and sealing degree of daily use, and improving the safety factor;

[0024] 2. The utility model sets the flameout protection device on the outside of the stove burner, which will not be baked or burned for a long time during use, greatly slowing down the aging of the pressure switch, not only improving safety, but also reducing the use cost because there is no need to frequently replace accessories;

[0025] 3. The flameout protection device in the utility model has few accessories, simple connection relationship, is not prone to failure during use, and safety can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a usage scenario diagram of a valve assembly with a flameout protection device previously applied for, and is also a usage scenario diagram of the valve assembly of the utility model;

[0028] Figure 2 It is a three-dimensional structural diagram of a valve assembly with a flameout protection device previously applied for, and is also a three-dimensional structural diagram of the valve assembly of the utility model;

[0029] Figure 3 It is a planar structural diagram of a valve assembly with a flameout protection device in a prior application, and is also a planar structural diagram of a valve assembly of the utility model;

[0030] Figure 4 for Figure 3 AA cross-sectional schematic diagram of the valve assembly with flameout protection device as a prior application;

[0031] Figure 5 It is a three-dimensional assembly diagram of the flameout protection device in the prior application, and is also a three-dimensional assembly diagram of the flameout protection device in the present utility model;

[0032] Figure 6 It is a cross-sectional schematic diagram of the flameout protection device in the prior application, and is also a cross-sectional schematic diagram of the flameout protection device in the present utility model;

[0033] Figure 7 It is a partial enlarged view of a commercially available heat-sensing flameout device;

[0034] Figure 8 It is a partial three-dimensional structural diagram of the improved thermal induction flameout device in the utility model;

[0035] Fig. 9 It is a partial planar structural diagram of the improved thermal induction flameout device in the utility model;

[0036] Fig.10 for Fig. 9 Schematic diagram of the BB cross section.

[0037] In the accompanying drawings, the component names represented by the reference numerals are listed as follows:

[0038] Va: valve assembly;

[0039] 100: flameout protection device, 101: push switch, 102: limit rod, 103: linkage rod, 104: spring, 105: threaded block, 106: limit tube, H: switch valve, Q: buffer structure;

[0040] 200: gas three-way valve, 201: gas inlet channel, 202: main fire gas channel, 203: pilot fire gas channel, 204: thermal induction flameout device, 205: main fire pressure-stabilizing flow regulator, 206: pilot fire pressure-stabilizing flow regulator, H': gas valve;

[0041] 2041: metal bellows, 2042: rubber gasket, 2043: through hole, 2044: bolt, S: hollow area. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] First, please refer to Figure 1As shown, it is a usage scenario diagram of the valve assembly of the utility model. The valve assembly Va (Valve assembly) of the utility model is installed in a commercial kitchen gas stove, and a through hole is arranged on the outside of the stove eye of the gas stove, and the push switch in the valve assembly Va is movably inserted in the through hole; therefore, when the staff is cooking, the pot is placed on the stove eye and does not contact the push switch; after cooking, the pot is moved out of the stove eye and placed outside the stove eye, and the bottom of the pot contacts and presses the push switch under the action of gravity, and the push switch moves downward, thereby closing the gas valve of the main fire, and the cooking stove temporarily extinguishes the main fire and only keeps the long-open fire burning; when cooking the next dish, the pot is moved back to the stove eye, the push switch rebounds and resets, and the gas valve of the main fire is reopened, and the cooking stove reignites the main fire.

[0044] Then, please combine Figure 2 , Figure 3 and Figure 4 As shown, Figure 2 This is a three-dimensional structural diagram of the valve assembly of the utility model. Figure 3 This is a planar structural diagram of the valve assembly of the utility model. Figure 4 for Figure 3 As a schematic diagram of the AA section of the valve assembly with a flameout protection device previously applied for; it should be noted that: the utility model is based on Figure 4 The structure in FIG. 2 has improved the thermal induction flameout device 204, which will be described in detail later.

[0045] The valve assembly includes: a flameout protection device 100 and a gas three-way valve 200. Specifically,

[0046] The flameout protection device 100 is described in detail in Figure 5 and Figure 6 As shown, Figure 5 is a three-dimensional assembly diagram of the flameout protection device, Figure 61 is a cross-sectional schematic diagram of the flameout protection device; specifically, the flameout protection device 100 comprises: a push switch 101, a limit rod 102, a linkage rod 103, a spring 104, a threaded block 105, a limit tube 106 and a switch valve H; wherein the top end of the push switch 101 extends out of the through hole provided on the outside of the stove eye of the cooking stove, and the bottom end is connected to the top end of the limit rod 102; the limit rod 102 is provided with a limit table adapted to the limit tube 106, and the bottom end is connected to the top of the linkage rod 103. The connecting rod 103 is connected to the end; the spring 104 is sheathed on the outer side of the connecting rod 103; the top end of the spring abuts against the top end of the connecting rod, and the bottom end is connected to the threaded block 105; the external thread of the threaded block 105 is adapted to the internal thread of the bottom end of the limiting tube 106; the bottom end of the connecting rod 103 is connected to the switch valve H, and the switch valve H is used to open or close the gas valve of the main fire; the bottom end of the limiting tube 106 is also provided with an external thread for threading the flameout protection device 100 and the gas three-way valve 200.

[0047] The working principle of the flameout protection device is as follows:

[0048] 1) After cooking is finished, the staff moves the pot out of the stove eye and places it outside the stove eye. The bottom of the pot touches and presses the push switch 101 under the action of gravity. The push switch 101 moves downward, and the trial limit rod 102 and the linkage rod 103 connected in sequence also move downward;

[0049] 2) Since the threaded block 105 is threadedly connected to the position limiting tube 106, the threaded block 105 also does not move if the position limiting tube does not move;

[0050] 3) The top end of the spring 104 moves downward with the linkage rod 103, while the bottom end thereof remains stationary with the threaded block 105, that is, the spring 104 is compressed and deformed;

[0051] 4) The switch valve H moves downward along with the linkage rod 103, thereby closing the gas valve of the main fire, and the cooking stove temporarily extinguishes the main fire, and only keeps the long-lasting fire burning;

[0052] 5) When cooking the next dish, the staff moves the pot back to the stove eye, the spring 104 rebounds and resets, the linkage rod 103 moves upward, the push switch 101 moves upward and resets, and the switch valve H also moves upward with the linkage rod 103, thereby reopening the gas valve of the main fire, and the cooking stove reignites the main fire.

[0053] Preferably, the flameout protection device 100 is further provided with a buffer structure Q, which is arranged at the connection between the push switch 101 and the limit rod 102, and includes a plurality of alternately arranged protrusions and recesses, and a rubber ring is arranged in the recess.

[0054] The gas three-way valve 200 includes: a gas intake channel 201, a main fire gas channel 202, a permanent fire gas channel 203, and a thermal induction flameout device 204, wherein the gas intake channel 201 supplies gas to enter the gas three-way valve 200, the main fire gas channel 202 supplies gas to be connected to the main fire port of the stove eye, and the permanent fire gas channel 203 supplies gas to be connected to the permanent fire port of the stove eye; a gas valve H' adapted to the switch valve H is provided in the main fire gas channel 202 for the flameout protection device to open or close the main fire.

[0055] Preferably, the bottom of the switch valve H is designed to be concave, so that the switch valve H is sleeved outside the gas valve H'.

[0056] The thermal induction flameout device 204 includes: a metal bellows, a thermocouple temperature sensor, and a solenoid valve, wherein the thermocouple temperature sensor is arranged at one end of the metal bellows and is used to detect the temperature of the gas inlet passage, and the solenoid valve is arranged at the other end of the metal bellows and is electrically connected to the thermocouple temperature sensor; the utility model uses a thermocouple temperature sensor for temperature monitoring, when the heat of the stove decreases, the solenoid valve linked to the thermocouple temperature sensor loses its magnetic force, and the adsorbed electromagnetic sheet automatically rebounds to block the gas; and when the heat rises, the thermocouple temperature sensor senses the heat, and the solenoid valve is reconnected, the solenoid valve pin is reset, and the gas is reopened. In this way, the gas can be automatically controlled without human intervention.

[0057] Please combine Figures 8 to 10 As shown, Figure 8 It is a partial three-dimensional structural diagram of the improved thermal induction flameout device in the utility model; Fig. 9 It is a partial planar structural diagram of the improved thermal induction flameout device in the utility model; Fig.10 for Fig. 9 BB cross-sectional schematic diagram. In the present utility model, a plurality of rubber washers 2042 are sleeved on the outside of the metal bellows 2041, and a hollow area S for containing lubricating oil is provided inside, and the position of the hollow area S corresponds to the position of the rubber washers 2042; a plurality of through holes 2043 are provided on the tube wall of the metal bellows 2041, and the through holes 2043 allow the lubricating oil in the hollow area S to flow out and lubricate the rubber washers 2042; a bolt 2044 for sealing the hollow area S is also provided at the end of the hollow area S, and the bolt 2044 can be unscrewed for replenishing lubricating oil. The lubricating oil is preferably butter grease, but is not limited thereto.

[0058] Preferably, the gas three-way valve 200 also includes a main fire pressure-stabilizing flow regulator 205 and a pilot fire pressure-stabilizing flow regulator 206; the main fire pressure-stabilizing flow regulator 205 is embedded in the main fire gas channel 202, and is used to adjust the flow of the main fire and stabilize the pressure; the pilot fire pressure-stabilizing flow regulator 206 is embedded in the pilot fire gas channel 203, and is used to adjust the flow of the pilot fire and stabilize the pressure; the main fire pressure-stabilizing flow regulator 205 and the pilot fire pressure-stabilizing flow regulator 206 are both provided with front end knobs for users to rotate and adjust.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A thermal induction flameout device, characterized in that: A metal bellows is provided, a plurality of rubber gaskets are sleeved on the outside of the metal bellows, a hollow area for containing lubricating oil is provided inside, and the position of the hollow area corresponds to the position of the rubber gasket; a plurality of through holes are provided on the tube wall of the metal bellows, and the through holes are used for the lubricating oil in the hollow area to flow out and lubricate the rubber gasket; a bolt for sealing the hollow area is also provided at the end of the hollow area, and the bolt can be unscrewed for replenishing the lubricating oil.

2. A valve assembly, comprising the thermal induction flameout device according to claim 1, characterized in that: It includes detachable connections: flameout protection device and gas three-way valve; among which, The flameout protection device comprises: a push switch, a limit rod, a linkage rod, a spring, a threaded block, a limit tube and a switch valve; wherein the bottom end of the push switch is connected to the top end of the limit rod; the limit rod is provided with a limit platform adapted to the limit tube, and the bottom end is connected to the top end of the linkage rod; the spring is sheathed on the linkage rod; the top end of the spring abuts against the top end of the linkage rod, and the bottom end is connected to the threaded block; the external thread of the threaded block is adapted to the internal thread of the bottom end of the limit tube; the bottom end of the linkage rod is connected to the switch valve; The thermal induction flameout device is arranged in the gas three-way valve.

3. The valve assembly according to claim 2, characterized in that: The gas three-way valve also includes: a gas inlet channel, a main fire gas channel and a pilot fire gas channel, wherein the gas inlet channel supplies gas to enter the gas three-way valve, the main fire gas channel supplies gas to be connected to the main fire port of the stove eye, and the pilot fire gas channel supplies gas to be connected to the pilot fire port of the stove eye; a gas valve adapted to the switch valve is provided in the main fire gas channel.

4. The valve assembly according to claim 3, characterized in that: The thermal induction flameout device also includes a thermocouple temperature sensor and a solenoid valve, wherein the thermocouple temperature sensor is arranged at one end of the metal bellows and is used to detect the temperature of the gas intake passage, and the solenoid valve is electrically connected to the thermocouple temperature sensor.

5. The valve assembly according to any one of claims 2 to 4, characterized in that: The flameout protection device is further provided with a buffer structure, which is arranged at the connection between the push switch and the limit rod and includes a plurality of alternately arranged protrusions and recesses, wherein a rubber ring is arranged in the recess.

6. The valve assembly according to any one of claims 2 to 4, characterized in that: The bottom end of the limit tube is also provided with an external thread for threaded connection of the flameout protection device with the gas three-way valve.

7. The valve assembly according to any one of claims 2 to 4, characterized in that: The bottom end of the limit tube is also provided with a clamping portion for the flameout protection device to be clamped and connected with the gas three-way valve.

8. The valve assembly according to any one of claims 2 to 4, characterized in that: The bottom of the switch valve is designed to be concave, so that the switch valve can be sleeved outside the gas valve.

9. The valve assembly according to claim 3, characterized in that: The gas three-way valve also includes a main fire pressure-stabilizing flow regulator and a pilot fire pressure-stabilizing flow regulator; the main fire pressure-stabilizing flow regulator is embedded in the main fire gas channel, and is used to adjust the flow of the main fire and stabilize the pressure; the pilot fire pressure-stabilizing flow regulator is embedded in the pilot fire gas channel, and is used to adjust the flow of the pilot fire and stabilize the pressure.

10. A gas stove, characterized in that: A through hole is arranged outside the stove eye of the gas stove, and a push switch in the valve assembly according to any one of claims 2 to 9 is movably inserted into the through hole.

Images