CN213872787U

CN213872787U - Commercial gas stove with flame-out protection device

Info

Publication number: CN213872787U
Application number: CN202022242572.4U
Authority: CN
Inventors: 张晓玲
Original assignee: Wuhan Suisheng Technology Co ltd
Current assignee: Wuhan Suisheng Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-08-03
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a commercial gas-cooker with flame-out protection device, including furnace body, controller, be equipped with the furnace end in the furnace chamber of furnace body, the furnace end includes that the torch is lighted to the changming and main, be equipped with the flame throws on the changming, be equipped with ignition switch on the first gas supply pipeline of the changming torch, the controller is connected with the ignition switch electricity, flame throws on one side of the changming torch and is equipped with the ignition needle, ignition switch is connected with the ignition needle electricity, be equipped with the first energy reflector who is the back taper type between the changming torch and the main torch of burning, the middle part of first energy reflector is equipped with branch fire hole, the lower part space of first energy reflector forms the heat isolation region, be equipped with the response needle in the heat isolation region, be located flame throws on one side of hole, the response needle is connected with the controller electricity. Through the layered arrangement of the long and bright torch and the main combustion torch, the first energy reflecting plate and the cooling assembly cool the heat isolation area, and the damage to the induction needle caused by excessive heat radiation is avoided.

Description

Commercial gas stove with flame-out protection device

Technical Field

The utility model relates to a safety protection field of cooking utensils especially relates to a commercial gas-cooker with flame-out protection device.

Background

The induction needle is an important component of the gas stove, and the quality of the induction needle is related to the ignition reaction time and the ignition success rate of the gas stove. The sensing needle is actually a temperature sensing element which directly measures the temperature and converts the temperature signal into a thermoelectromotive force signal, and the sensing needle is formed by combining two different alloy materials. Different alloy materials can generate different thermoelectric potentials under the action of temperature, and the induction needle is manufactured by using different thermoelectric potentials generated by different alloy materials under the action of temperature. Two conductors of different compositions are joined into a loop at their two ends, and when the temperature of the joint is different, an electromotive force is generated in the loop, which is called thermoelectric effect, and called thermoelectric potential. The induction needle is used for temperature measurement by utilizing the principle, wherein one end directly used for measuring the temperature of a medium is called a working end, and the other end is called a cold end; the cold end is connected with a display instrument or a matched instrument, and the display instrument can indicate the thermoelectric force generated by the induction needle. The height of the sensing needle is basically equal to that of the fire cover, and the distance between the sensing needle and the fire cover is kept. The response needle can not be too far away with the fire lid distance, generally keeps 4 +/-0.5 mm's distance preferred, if the mounted position is too low, the response needle is heated inadequately, produces the thermoelectric power inadequately, can not make the solenoid valve actuation, and the mounted position is too high, and the flame contact is too big, burns out the response needle easily, and same reason is too far away, also can the thermoelectric power inadequately, can not make the solenoid valve actuation.

The principle of the commercial gas cooker is that the gas cooker is connected into a medium-pressure valve or a high-pressure valve in a gas pipeline, so that the gas pipeline outputs fuel with larger gas volume, an air blower provides more oxygen for combustion, and then more heat is provided for cooking, as the power of the commercial gas cooker is high, the use time is long, the temperature of a central combustion area is very high, an ignition needle and an induction needle on a furnace end are easy to be burnt out, so that the ignition needle and the induction needle lose ignition and flameout protection functions and are complicated to replace, so that most of the existing commercial gas cookers are not provided with the ignition needle and the induction needle, only a pilot torch and a main combustion torch are arranged on the furnace end and are respectively controlled by two gas valves separately, and the pilot torch is usually manually ignited by an elongated igniter when the gas cooker is used, after the pot is set, the gas valve of the main burning torch is opened and the torch fire of the pilot burning torch ignites the main burning torch. However, the combustion mode without flameout protection has serious potential safety hazard, and does not accord with the national safety mandatory management standard, before the long open flame is ignited, if a gas valve of the main combustion torch is opened, the main flame is ignited at the same time after the long open flame is ignited, and because the ventilation volume of the main combustion torch is large, the main combustion torch is easy to cause deflagration, and especially for commercial cooking utensils with high power, the combustion mode has great potential safety hazard.

The reason for dismantling the induction needle at present mainly includes the following two points: firstly, under the action of an air blower and a medium-pressure valve, the commercial gas stove is not uniformly mixed with gas and air, and the combustion is unstable, so that the induction needle is misjudged and flamed out; secondly, because the response needle life is short fragile, can not normally ignite, demolish and change and waste time and energy. In summary, further improvements to the existing sensing structure are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to above-mentioned difficult point, provide a commercial gas-cooker with flame-out protection device, the response needle is difficult to be burnt out, burns the stability to the response needle after igniteing, and signal continuous transmission is to the controller, and commercial gas-cooker's stability in use is good.

The utility model relates to a commercial gas-cooker with flame-out protection device, including furnace body, controller, be equipped with the furnace end in the furnace chamber of furnace body, the furnace end includes the long bright torch and mainly fires the torch, be equipped with the flame thrower on the long bright torch, be equipped with ignition switch on the first gas supply pipeline of long bright torch, the controller is connected with the ignition switch electricity, flame thrower one side of long bright torch is equipped with the ignition needle, ignition switch is connected with the ignition needle electricity, the main torch is the cyclic annular setting, the upper surface of main torch is circular array and has a plurality of main flame holes, be equipped with the manual-automatic body valve on the second gas supply pipeline of main torch, the manual-automatic body valve is connected with the controller electricity, long bright torch is located main torch middle part below, be equipped with the first energy reflector plate that is the back taper type between long bright torch and the main torch, the middle part of first energy reflector plate is equipped with branch fire hole, the lower space of the first energy reflection sheet forms a heat isolation area, an induction needle is arranged in the heat isolation area and located on one side of the fire spraying hole, and the induction needle is electrically connected with the controller.

Furthermore, the first energy reflection sheet comprises a surface reflection layer and a bottom heat insulation layer, the reflection layer is made of ceramic or metal materials, and the heat insulation layer is made of aluminum silicate.

Further, still include cooling subassembly, heat exchange assembly, the cooling subassembly is connected with heat exchange assembly, the cooling subassembly is located in the heat isolation region.

Further, the cooling subassembly includes the cooling pipe, the cooling pipe is the annular and locates in the heat isolation region, is located and mainly fires between the inner wall of torch and the response needle, the cooling subassembly is water pipe and tap, the one end and the water piping connection of cooling pipe, the other end is connected with tap.

Furthermore, the cross section of the cooling pipe is circular or square, and the material of the cooling pipe is any one of a stainless steel pipe, a copper pipe and an aluminum pipe.

Preferably, the cooling pipe is a square aluminum pipe.

The gas burner further comprises an air supply pipeline, wherein an air blower and an air volume adjusting valve are arranged on the air supply pipeline, a gas premixing chamber with a hollow structure is arranged below the main burner, and the gas premixing chamber is communicated with the air supply pipeline and the second gas supply pipeline.

Furthermore, a mixer for uniformly mixing the gas and the air is arranged in the gas premixing chamber.

Further preferably, a spiral mixing blade is arranged inside the mixer, and a flow distribution plate is arranged above the mixer.

The flame-out protection method based on the commercial gas stove with the flame-out protection device comprises the following steps:

s1, placing a first energy reflection sheet between the pilot burner and the main burner, enabling an induction needle to be located in a heat isolation area of the first energy reflection sheet, manually controlling an ignition switch to ignite the pilot burner through an ignition switch, dividing flame sprayed out from a flame spraying hole into a main flame and a side flame through a flame dividing hole, wherein the main flame is used for igniting the main burner, and the side flame is used for burning the induction needle to enable the induction needle to generate induction electricity to be transmitted to a controller;

s2, detecting flame, if the controller collects the induced electricity generated by the induction needle, keeping the ignition switch open, manually opening the manual-automatic integrated valve, igniting the main combustion torch through the pilot burner for cooking, if the controller does not collect the induced electricity, automatically closing the ignition switch, and entering the step S1 for re-ignition;

s3, the controller continuously detects flame in the cooking process, and if induction electricity generated by the induction needle is not collected, the ignition switch and the manual-automatic integrated valve are automatically closed by the controller.

Specifically, a cooling component is arranged in the heat isolation area, so that the temperature in the heat isolation area is further reduced.

Compared with the prior art, the utility model, have following advantage:

1. the side flame of the torch burns the induction needle through the fire dividing hole, the side flame burns stably without deviation, the induction needle generates stable signals to the controller, and the controller is prevented from misjudgment.

2. Through the setting of long bright torch and main torch layering of firing, first energy reflector plate and cooling subassembly are to the cooling of heat isolation region, avoid too much heat radiation to the response needle to cause the damage, reflect partial heat energy to the pan bottom simultaneously, have promoted the utilization ratio of heat energy, compare in the response needle of traditional commercial kitchen, its life extension is more than 4 times.

3. The air and the fuel gas of the pilot burner and the main burner are supplied separately, and the air and the fuel gas of the main burner are mixed and uniformly distributed through the mixer and the distribution plate, so that the fuel gas of the pilot burner and the main burner is stably combusted, and the probability of accidental flameout of the commercial stove due to the supply of the air and the fuel gas is reduced.

Drawings

FIG. 1 is a schematic view of a commercial gas range with a flameout protection device;

fig. 2 is a schematic structural view of a cooling pipe in embodiment 1.

1-furnace body, 2-controller, 3-furnace end, 4-long bright torch, 5-main burning torch, 6-flame spraying hole, 7-first gas supply pipeline, 8-ignition switch, 9-ignition needle, 10-main burning hole, 11-second gas supply pipeline, 12-manual-automatic integrated valve, 13-first energy reflection sheet, 14-flame distributing hole, 15-heat isolation area, 16-induction needle, 17-cooling pipe, 18-furnace chamber, 19-cooling component, 20-heat exchange component, 21-tap water pipe, 22-tap, 23-air supply pipeline, 24-blower, 25-air quantity regulating valve, 26-gas premixing chamber, 27-mixer, 28-mixing blade, 29-flow distribution plate, 30-pot, 31-second energy reflection sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and 2, the utility model relates to a commercial gas stove with flame-out protection device, which comprises a stove body and a controller, wherein a stove head is arranged in a stove chamber of the stove body, the stove head comprises a pilot torch and a main combustion torch, a fire hole is arranged on the pilot torch, an ignition switch is arranged on a first gas supply pipeline of the pilot torch, the controller is electrically connected with the ignition switch, an ignition needle is arranged on one side of the fire hole of the pilot torch, the ignition switch is electrically connected with the ignition needle, the main combustion torch is arranged in an annular shape, a plurality of main fire holes are arranged on the upper surface of the main combustion torch in a circular array, an auto-manual valve is arranged on a second gas supply pipeline of the main combustion torch, the auto-manual valve is electrically connected with the controller, the pilot torch is arranged below the middle part of the main combustion torch, a first energy reflection sheet in a reverse taper shape is arranged between the pilot torch and the main combustion torch, the middle part of the first energy reflection sheet is provided with a fire dividing hole, the lower space of the first energy reflection sheet forms a heat isolation area, an induction needle is arranged in the heat isolation area and located on one side of the fire spraying hole, and the induction needle is electrically connected with the controller.

Divide the flame hole to be arranged in dividing into main flame and side flame with the flame that burns in the flame jet of the long and clear torch, the flame of main flame is higher, easily receives the culinary art in-process pan to remove the influence, through dividing the flame hole with flame separation back, the side flame is located lower position, receives the influence less, sustainable stable burning response needle.

The first energy reflection sheet comprises a surface reflection layer and a bottom heat insulation layer, the reflection layer is made of metal materials, the reflection layer is made of stainless steel materials in the embodiment, the surface smoothness is not larger than Ra1.6, heat energy can be reflected to the bottom of the pot, and the heat insulation layer is made of aluminum silicate and has good high-temperature resistance and heat insulation performance.

Still include cooling subassembly, heat exchange assembly, the cooling subassembly is connected with heat exchange assembly, the cooling subassembly is located in the heat isolation region.

In this embodiment the cooling subassembly includes the cooling tube, the cooling tube is the annular and locates in the heat isolation region, is located and mainly fires between the inner wall of torch and the response needle, the cooling subassembly is water pipe and tap, the one end and the water piping connection of cooling tube, the other end is connected with tap, and the tap goes out water and can take away the heat energy in the heat isolation region among the culinary art process, reduces the temperature in the heat isolation region, the cross-section of cooling tube is circular shape stainless steel pipe, wall thickness 1 mm.

The gas pre-mixing device is characterized by further comprising an air supply pipeline, wherein an air blower and an air volume adjusting valve are arranged on the air supply pipeline, a gas pre-mixing chamber with a hollow structure is arranged below the main combustion torch, and the gas pre-mixing chamber is communicated with the air supply pipeline and the second gas supply pipeline. The gas premixing chamber is internally provided with a mixer used for uniformly mixing gas and air, the mixer is internally provided with a spiral mixing blade (namely an SK type static mixer), and a flow distribution plate is arranged above the mixer. As shown by the arrow 1, gas and air after the homogeneous mixing in the blender, the main fire hole of reposition of redundant personnel to different positions through the flow distribution plate burns again, compares in the conventional mode of mixing after the reposition of redundant personnel again, the utility model discloses the homogeneity of mixing is better, and the burning is more abundant, and stability is better.

s2, detecting flame, keeping an ignition switch open if a controller collects induced electricity generated by an induction needle, manually opening a manual-automatic integrated valve and an air quantity regulating valve, enabling the ratio of gas and air of a main combustion torch to be reasonable, grasping the opening size of the manual-automatic integrated valve and the air quantity regulating valve by observing the combustion state of the flame, igniting the main combustion torch through a pilot burner for cooking, automatically closing the ignition switch if the controller does not collect the induced electricity, and entering the step S1 for re-ignition;

s3, the controller continuously detects flame in the cooking process, if induction electricity generated by the induction needle is not collected, the ignition switch and the manual-automatic integrated valve are automatically closed by the controller, and a cooling assembly is arranged in the heat isolation area to further reduce the temperature in the heat isolation area.

The control steps of the utility model follow the flameout protection principle that 'the long open fire cannot be extinguished, the main fire cannot be extinguished, the long open fire is extinguished, and the main fire must be extinguished'.

Example 2

The utility model relates to a commercial gas-cooker with flame-out protection device, including furnace body, controller, be equipped with the furnace end in the furnace chamber of furnace body, the furnace end includes the long bright torch and mainly fires the torch, be equipped with the flaming hole on the long bright torch, be equipped with ignition switch on the first gas supply pipeline of the long bright torch, the controller is connected with the ignition switch electricity, flaming hole one side of the long bright torch is equipped with the ignition needle, ignition switch is connected with the ignition needle electricity, and the air supply of the long bright torch is the same with traditional cooking utensils, by ignition switch department and gas mixture back, flaming hole department burns, and the long bright torch main function is used for igniting main torch, and its supply of gas and air is less relatively, main burning is the annular setting, the upper surface of main torch is the circular array and has a plurality of main flaming holes, be equipped with the hand from integrative valve on the second gas supply pipeline of main torch, the manual-automatic integrated electric actuator is characterized in that the manual-automatic integrated valve is electrically connected with the controller, the pilot torch is arranged below the middle part of the main combustion torch, the vertical fall distance is 30mm, a first energy reflector plate in a reverse taper shape is arranged between the pilot torch and the main combustion torch, a fire distribution hole is formed in the middle of the first energy reflector plate, a heat isolation area is formed in the lower space of the first energy reflector plate, an induction needle is arranged in the heat isolation area and located on one side of the fire spraying hole, and the induction needle is electrically connected with the controller.

The first energy reflection sheet comprises a reflection layer of a surface layer and a heat insulation layer of a bottom layer, the reflection layer is made of ceramic materials with the thickness of 5mm, the heat energy can be reflected to the bottom of the cookware, and the heat insulation layer is made of aluminum silicate with the thickness of 5mm and has good heat insulation performance.

Still include cooling subassembly, heat exchange assembly, the cooling subassembly is connected with heat exchange assembly, the cooling subassembly is located in the heat isolation region. In this embodiment the cooling subassembly includes the cooling pipe, and heat exchange assemblies is the water tank, is equipped with the water pump in the water tank, and the water pump makes the inside water of water tank circulate and flows in the cooling pipe, the cooling pipe is square aluminum pipe, and the wall thickness is 0.8 mm. In another embodiment, the cooling pipe is a square copper pipe.

Claims

1. A commercial gas stove with a flameout protection device comprises a stove body and a controller, wherein a stove head is arranged in a stove cavity of the stove body, the stove head comprises a pilot torch and a main burning torch, a flame spray hole is formed in the pilot torch, an ignition switch is arranged on a first gas supply pipeline of the pilot torch, the controller is electrically connected with the ignition switch, an ignition needle is arranged on one side of the flame spray hole of the pilot torch, the ignition switch is electrically connected with the ignition needle, the main burning torch is annularly arranged, a plurality of main flame spray holes are formed in the upper surface of the main burning torch in a circular array, the commercial gas stove is characterized in that a manual-automatic integrated valve is arranged on a second gas supply pipeline of the main burning torch, the manual-automatic integrated valve is electrically connected with the controller, the pilot torch is arranged below the middle part of the main burning torch, a first energy reflection sheet in a reverse taper shape is arranged between the pilot torch and the main burning torch, and a flame distribution hole is formed in the middle part of the first energy reflection sheet, the lower space of the first energy reflection sheet forms a heat isolation area, an induction needle is arranged in the heat isolation area and located on one side of the fire spraying hole, and the induction needle is electrically connected with the controller.

2. The commercial gas stove with flameout protection device according to claim 1, wherein the first energy reflection sheet comprises a surface reflection layer and a bottom insulation layer, the reflection layer is made of ceramic or metal material, and the insulation layer is made of aluminum silicate.

3. The commercial gas stove with the flameout protection device according to claim 1 or 2, further comprising a cooling component and a heat exchange component, wherein the cooling component is connected with the heat exchange component, and the cooling component is arranged in the heat isolation region.

4. The commercial gas stove with flameout protection device according to claim 3, wherein the cooling assembly comprises a cooling pipe, the cooling pipe is annularly arranged in the heat isolation area and located between the inner wall of the main combustion torch and the induction needle, the cooling assembly is a tap water pipe and a faucet, one end of the cooling pipe is connected with the tap water pipe, and the other end of the cooling pipe is connected with the faucet.

5. The commercial gas stove with flameout protection device according to claim 4, wherein the cooling pipe has a circular or square cross section and is made of any one of stainless steel pipe, copper pipe and aluminum pipe.

6. The commercial gas stove with flameout protection device according to claim 5, further comprising an air supply pipe, wherein the air supply pipe is provided with a blower and an air volume adjusting valve, a hollow gas premixing chamber is arranged below the main burning torch, and the gas premixing chamber is communicated with the air supply pipe and the second gas supply pipe.

7. The commercial gas stove with flameout protection device according to claim 6, wherein a mixer for uniformly mixing gas and air is provided in the gas premixing chamber.

8. The commercial gas range with flameout protection device as claimed in claim 7, wherein the mixer is provided with helical mixing blades inside, and a splitter plate is provided above the mixer.