CN117190252A - Low-temperature infrared gas appliance - Google Patents

Abstract

The application discloses a low-temperature infrared gas appliance, which comprises: the low-temperature catalytic combustion system comprises a nozzle assembly, an ignition needle assembly and a furnace chamber, wherein an injection pipe mounting hole is formed in the bottom of the furnace chamber, a front injection pipe is arranged in the injection pipe mounting hole, a porous flow distribution plate and catalytic cotton are arranged above the front injection pipe from bottom to top, precious metal catalysts are loaded on the surface of the catalytic cotton, and a rear injection pipe is communicated with the lower end of the front injection pipe; the application realizes low-temperature catalytic combustion reaction of fuel gas and oxygen under the action of a noble metal catalyst, and the porous structure of the catalytic cotton provides more catalyst active centers, so that the combustion reaction can continuously and stably proceed.

Description

Low-temperature infrared gas appliance

Technical Field

The application belongs to the field of heating appliances, and particularly relates to a low-temperature infrared gas appliance.

Background

The portable gas appliance mainly adopts a disposable gas tank for fuel distribution, is convenient to carry and is convenient for use in different scenes; in particular, in recent years, people are more and more enthusiasm for outdoor activities, and portable burners are becoming one of the necessary tools for camping. At present, the portable gas appliance is only provided with two kinds of burners, namely an atmospheric burner and an infrared burner, and the portable gas appliance provided with the two kinds of burners mainly has the following defects while bringing convenience:

1. the wind resistance is weak, and most of the atmospheric burners need to adopt a wind shield or a wind guard plate to ensure the use of a low-wind scene; the infrared burner has greatly improved windproof performance compared with the atmospheric burner, can be used under larger wind power, but has deteriorated combustion condition, and can not completely ensure no flameout

2. Because the combustion is thermal combustion, the activation energy required by the combustion is high, the combustion temperature is high, usually about 800 ℃ or even higher, open fire exists, combustible objects and materials can be easily ignited, and the risk of explosion or fire is caused; simultaneously, the pan bottom is easy to burn, the food is burnt, the pan body, in particular the non-stick layer on the pan body, is burnt, and not only has certain potential safety hazard, but also brings certain threat to the health of people.

3. The effective combustion area is small, the heating part is usually arranged at the central part of the stove body with the diameter of about 100mm, and the heating area of the cooking appliance is usually much larger than the heating area, so that the cooking appliance can realize relatively uniform heating only when the bottom of the pot is full of liquid, and the situation of nonuniform heating caused by local overhigh temperature rise when local liquid is burnt out can usually occur.

4. The function is single, is generally only used for cooking, and cannot be used or not suitable for heating.

In view of the foregoing, there is a need for a novel burner and a portable gas appliance incorporating the same that can solve the above problems.

Disclosure of Invention

The application mainly aims to provide a low-temperature infrared gas appliance.

According to an embodiment of the first aspect of the present application, there is provided a low temperature infrared gas burner comprising:

the low-temperature catalytic combustion system comprises a nozzle assembly, an ignition needle assembly and a furnace chamber, wherein an injection pipe mounting hole is formed in the bottom of the furnace chamber, a front injection pipe is arranged in the injection pipe mounting hole, a porous flow distribution plate and catalytic cotton are arranged above the front injection pipe from bottom to top, a noble metal catalyst is loaded on the surface of the catalytic cotton, and a rear injection pipe is communicated with the lower end of the front injection pipe;

the catalytic cotton ignition device comprises a furnace chamber, a catalytic cotton, an ignition needle assembly, a nozzle assembly and a rear injection pipe, wherein the furnace chamber and the catalytic cotton are provided with penetrating ignition needle mounting holes which vertically penetrate through the furnace chamber and the catalytic cotton at the same position, the ignition needle assembly is arranged in the penetrating ignition needle mounting holes, one end of the nozzle assembly is used for being connected with a fuel gas source, the other end of the nozzle assembly is communicated with the rear injection pipe, and the ignition needle assembly carries out high-voltage discharge on the catalytic cotton to locally ignite the catalytic cotton.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the low-temperature infrared gas appliance further comprises a furnace body shell assembly, the furnace body shell assembly comprises a front plate, a panel, a rear plate and a mounting bottom plate, the inner side of the upper part of the panel is provided with a horizontal folded edge, the mounting bottom plate is arranged at the bottoms of the front plate and the rear plate, and the horizontal folded edge and the mounting bottom plate support the low-temperature catalytic combustion system.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the upper part of the front injection pipe is sleeved with the splitter plate cotton support assembly, the upper part of the furnace chamber is bent to form the support step, the catalytic cotton quilt support step and the splitter plate cotton support assembly are jointly supported, the splitter plate cotton support assembly comprises the splitter fixing plate, the upright post and the catalytic cotton support ring, the splitter fixing plate is sleeved on the outer edge of the upper end of the front injection pipe, the upright post is arranged on the outer edge of the splitter fixing plate, and the splitter plate and the catalytic cotton support ring are respectively arranged at the middle part and the top of the upright post.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, a metal sleeve assembly is arranged in the penetrating ignition needle mounting hole, the metal sleeve assembly comprises a sealing gasket and a sleeve, the sleeve is inserted into the penetrating ignition needle mounting hole at the bottom of the furnace chamber from top to bottom from catalytic cotton, and the sealing gasket is arranged at the top of the sleeve; the catalytic cotton supporting ring and the sealing gasket clamp the catalytic cotton from the upper part and the lower part of the catalytic cotton respectively; the ignition needle assembly is disposed within the sleeve.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the ignition needle assembly comprises an ignition needle, a ceramic insulator is arranged outside the ignition needle, a threaded metal sleeve is coated outside the ceramic insulator, and two nuts are arranged on the metal sleeve;

the ignition needle assembly is arranged in the sleeve;

the bottom of the furnace chamber is provided with a furnace end front support, the furnace end front support is provided with a horizontal bend, a mounting hole is formed in the horizontal bend, the ignition needle assembly is assembled in the mounting hole, and the ignition needle assembly is fixed on the horizontal bend of the furnace end front support by two nuts;

the catalytic cotton is characterized in that a protective net is further arranged above the catalytic cotton, the needle tip of the ignition needle is located between the protective net and the catalytic cotton, the bottom end of the ignition needle is connected with piezoelectric ceramics, and electric sparks are generated when the piezoelectric ceramics are pressed.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the furnace body shell assembly further comprises a gas cylinder bin, the gas cylinder bin is arranged on one side of the furnace body shell assembly, one end of the gas cylinder bin is provided with a gas control valve, the gas control valve is used for being connected with a gas cylinder, and the gas control valve is further communicated with the nozzle assembly.

According to the embodiment of the first aspect of the application, the mounting plate is further provided with a folding positioning hinge, the folding positioning hinge comprises a positioning support and an elastic support, the positioning support is arranged on the mounting bottom plate, the elastic support is rotatably arranged on the positioning support, and the positioning support is provided with a limiting structure at the tail end and the beginning end of an elastic support rotating path.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the pot rack base is arranged above the catalytic cotton, the pot rack comprises three folds with vent holes and one non-porous fold, the non-porous fold and the folds with the vent holes are rectangular and surround, and the non-porous fold is close to the gas cylinder bin.

According to the low-temperature infrared gas appliance disclosed by the embodiment of the first aspect of the application, the rear injection pipe is provided with a penetrating air inlet on a vertical gas flow path.

One of the above technical solutions of the present application has at least one of the following advantages or beneficial effects:

according to the application, the noble metal catalyst is supported on the surface of the catalytic cotton, so that the catalytic combustion reaction of fuel gas and the noble metal catalyst is realized, the porous structure of the catalytic cotton maintains the effect of low-temperature ignition, the catalytic cotton has good wind resistance, and meanwhile, the flameless combustion is realized, and the catalytic cotton has good combustion effect.

Drawings

The application is further described below with reference to the drawings and examples;

FIG. 1 is a schematic isometric view of one embodiment of the application;

FIG. 2 is a schematic bottom view of FIG. 1;

FIG. 3 is a schematic view of the left side cross-sectional structure of FIG. 1;

FIG. 4 is a schematic view showing a folding positioning hinge accommodating state according to an embodiment of the present application;

FIG. 5 is a schematic view showing an opened state structure of a folding positioning hinge according to an embodiment of the present application

FIG. 6 is a schematic cross-sectional view of a low temperature catalytic combustion system according to an embodiment of the present application;

FIG. 7 is a schematic view of the structure of a splitter plate cotton support assembly in accordance with one embodiment of the application;

FIG. 8 is a schematic diagram of a heating status structure according to an embodiment of the present application;

wherein:

1. a furnace body shell assembly; 101. a front plate; 102. a panel; 1021. horizontally flanging; 103. a rear plate; 104. a mounting base plate; 105. a gas cylinder bin; 1051. a gas cylinder; 1052. a gas bottle cap; 106. a support leg;

2. a low temperature catalytic combustion system; 201. a nozzle assembly; 2011. a flange; 2012. copper pipe; 202. an ignition needle assembly; 2021. an ignition needle; 2022. a nut; 2023. a high voltage ignition wire; 2024. piezoelectric ceramics; 2025. a knob switch; 2026. a bottle locking button; 203. a cavity; 2031. an ejector tube mounting hole; 2032. a front ejector tube; 20321. an annular sealing cotton pad; 2033. a rear injection pipe; 20331. an air inlet; 2034. a through ignition needle mounting hole; 2035. furnace chamber ruffles; 2036. a support step; 204. a splitter plate cotton bracket assembly; 2041. a diverter plate; 2042. a shunt fixing plate; 2043. a column; 2044. a catalytic cotton support ring; 205. catalytic cotton; 206. a metal sleeve assembly; 2061. a sleeve; 2062. a sealing gasket; 207. a furnace end front support;

3. an energy-saving pot bracket; 301. a pot rack base; 302. a pot rack supporting piece; 3021. a vent hole; 3022. folding edges; 3023. pore-free flanging; 3024. semicircular boss; 3025. a highest point;

4. a protective net;

5. a gas control valve; 501. an air inlet joint; 502. the clip type air tank notch positioning spring plate;

6. folding positioning hinge; 601. positioning a support; 6011. a limit stop; 6012. opening the groove; 6013. a receiving groove; 6014. a protrusion; 602. and (5) elastically supporting.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more features.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and for example, it may be a fixed connection or an active connection, or it may be a detachable connection or a non-detachable connection, or it may be an integral connection; may be mechanically connected, may be electrically connected, or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements, indirect communication or interaction relationship between the two elements.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the application.

Referring to fig. 1 to 8, the application discloses a low temperature infrared gas appliance, including a furnace body shell assembly 1, a low temperature catalytic combustion system 2 and an energy-saving pot support 3, the low temperature catalytic combustion system 2 includes a nozzle assembly 201, an ignition needle assembly 202, the periphery surrounds confined furnace chamber 203, a splitter plate cotton support assembly 204 and catalytic cotton 205, wherein the bottom center of the furnace chamber 203 is provided with an ejector tube mounting hole 2031, a front ejector tube 2032 is provided in the ejector tube mounting hole 2031, splitter plate cotton support assembly 204 and catalytic cotton 205 are sequentially provided above the front ejector tube 2032, wherein the splitter plate cotton support assembly 204 includes a splitter plate 2041 with porous shape, the splitter plate 2041 is located below the catalytic cotton 205, the lower end of the front ejector tube 2032 is communicated with a rear ejector tube 2033, and the rear ejector tube 2033 is connected with a gas source through the nozzle assembly 201.

The front injection pipe 2032 and the rear injection pipe 2033 are of split type, so that on one hand, assembly and maintenance are facilitated, and the angle of dimensional deviation during manufacturing can be compensated.

A penetrating type ignition needle mounting hole 2034 penetrating the furnace chamber 203, the splitter plate 2041 and the catalytic cotton 205 vertically is provided at the same position, and the aforementioned ignition needle assembly 202 is provided in the penetrating type ignition needle mounting hole 2034. The through-needle mounting holes 2034 include a first through-needle mounting hole 205a on the catalytic cotton 205, a second through-needle mounting hole 2044b on the splitter plate 2041 and a third through-needle mounting hole 203c on the oven cavity 203. The catalytic cotton 205 is supported with a noble metal catalyst to form a catalyst layer.

The fuel gas passing through the nozzle assembly 201, the rear injection pipe 2033 and the front injection pipe 2032 in sequence is blocked and permeated by the porous splitter plate 2041, and is uniformly distributed on the catalytic cotton 205, and simultaneously contacts with the noble metal catalyst on the catalytic cotton 205. When the ignition needle assembly 202 is ignited, the fuel gas around the ignition needle assembly 202 is subjected to high-voltage discharge, and partial instantaneous open fire is formed, so that the partial temperature of the catalyst layer reaches the ignition temperature of catalytic combustion to form low-temperature catalytic oxidation reaction, and the partial heat is continuously diffused to the periphery of the ignition position to enable the whole catalytic cotton 205 to burn.

Preferably, the catalytic cotton 205 is a refractory fiber material with a cotton blanket-like porous structure, and one or two of platinum and rhodium noble metal catalysts are loaded on the surface of the material.

Further, the low-temperature infrared gas burner further comprises a burner body housing assembly 1, the burner body housing assembly 1 comprises a front plate 101, a panel 102, a rear plate 103, side plates and a mounting bottom plate 104, wherein the front plate 101, the rear plate 103 and the two side plates surround to form a cavity, the mounting bottom plate 104 is arranged at the bottom of the cavity, the panel 102 is arranged at the upper part of the cavity, a horizontal folded edge 1021 is arranged on the inner side of the upper part of the panel 102, a placement groove for placing a burner body into the burner body housing assembly 1 is formed on the panel 102 around the horizontal folded edge 1021, and the low-temperature catalytic combustion system 2 is mounted in the burner body housing assembly 1 in a mode that the bottom is supported by the mounting bottom plate 104 through the upper part of the horizontal folded edge 1021 which is overlapped at the panel 102.

Further, an energy-saving pot bracket 3 is arranged above the low-temperature catalytic combustion system 2 and is used for supporting a pot. A protective net 4 is also arranged between the energy-saving pot bracket 3 and the low-temperature catalytic combustion system 2, and the protective net 4 is mutually clamped with the top end of the furnace chamber 203 to fix catalytic cotton 205.

Preferably, the shape of the protection net 4 is equivalent to the effective heat-generating radiation area of the low-temperature catalytic combustion system 2.

In some embodiments of the present application, the side surface of the furnace body shell assembly 1 is further provided with a gas cylinder 105, the gas cylinder 105 is provided with a gas control valve 5 connected with the low-temperature catalytic combustion system 2, the gas control valve 5 is arranged at one end of the gas cylinder 105, the gas control valve 5 comprises a threaded gas inlet joint 501 and a snap-in gas cylinder notch positioning spring piece 502, and the snap-in gas cylinder notch positioning spring piece 502 is used for clamping a gas cylinder 1051 tank and guaranteeing the stability of the gas cylinder 1051 tank. The air inlet joint 501 communicates with the air outlet of the air cylinder 1051. Of course, the air inlet connector 501 may also be in communication with other sources of fuel through an adapter.

A gas bottle cover 1052 for shielding the gas bottle 105 is hinged above the gas bottle 105, and preferably, the gas bottle cover 1052 is connected with the gas bottle 105 through a double-rotating-shaft structure.

The inner side pipe wall of the front injection pipe 2032 is provided with a step, an annular sealing cotton pad 20321 is arranged under the close contact step, a rear injection pipe 2033 is arranged under the annular sealing cotton pad 20321, and the rear injection tank and the front injection pipe 2032 are sealed by the annular sealing cotton pad 20321 and have good air tightness. Meanwhile, a penetrating air inlet 20331 is formed in the side face of the rear injection pipe 2033, the air inlet 20331 is perpendicular to an air inlet path of the rear injection pipe 2033, and the rear injection pipe 2033 enters the air inlet 20331 through air to realize premixed combustion. The lower extreme of back injection pipe 2033 is provided with the internal thread, and nozzle assembly 201 includes flange 2011 and with the copper pipe 2012 of air inlet joint 501 intercommunication, flange 2011 one end and copper pipe 2012 intercommunication, the other end and back injection pipe 2033 spiro union.

The splitter plate cotton support assembly 204 further comprises a splitter fixing plate 2042, a column 2043 and a catalytic cotton support ring 2044, wherein the splitter fixing plate 2042 is nested at the outer edge of the upper end of the injection pipe and supported by the bottom of the oven cavity 203, and a through hole communicated with the front injection pipe 2032 is formed in the splitter fixing plate 2042. The upright post 2043 is disposed on the split-flow fixing plate 2042, and the split-flow plate 2041 and the catalytic cotton support ring 2044 are disposed at the middle and top of the upright post 2043, respectively, and the aforementioned through-type ignition needle mounting hole 2034 is disposed through the catalytic cotton support ring 2044.

The upper portion of the furnace chamber 203 is provided with a supporting step 2036, the edge of the supporting step 2036 is provided with a furnace chamber ruffle 2035, the edge of the protection net 4 is correspondingly protruded and forms a horizontal flanging, and the flanging of the protection net 4 and the furnace chamber ruffle 2035 are mutually clamped to seal and compress the catalytic cotton 205 for shaping.

The support step 2036 and the catalytic cotton support ring 2044 together carry the catalytic cotton 205 previously described.

Further, a metal sleeve assembly 206 is further installed in the penetrating ignition needle installing hole 2034, the metal sleeve assembly 206 comprises a sleeve 2061 with external threads and a sealing gasket 2062 arranged at the top end of the sleeve 2061, the metal sleeve 2061 penetrates through the upper portion of the catalytic cotton 205 and is in threaded connection with the penetrating ignition needle installing hole 2034 in the furnace chamber 203, and meanwhile, the sealing gasket 2062 is located above the catalytic cotton 205 and is matched with the catalytic cotton supporting ring 2044 to clamp and attach the catalytic cotton 205, so that sealing is achieved.

In the present application, the ignition needle assembly 202 comprises an ignition needle 2021, a ceramic insulator and a metal sleeve, wherein the ceramic insulator is arranged outside the ignition needle 2021, the metal sleeve is provided with external threads, the metal sleeve is coated outside the ceramic insulator, and two nuts 2022 are arranged at the external threads of the metal sleeve. The ignition needle assembly 202 is mounted to the bottom of the oven cavity 203 by an oven head front support 207. Specifically, the burner front support 207 is provided with a horizontal bend provided with a mounting hole coaxial with the sleeve 2061, and two nuts 2022 are respectively screwed with the metal sleeve of the ignition needle 2021 above and below the horizontal bend. At the same time, the upper part of the ignition needle assembly 202 is inserted into the sleeve 2061 in the middle, and the position of the needle tip of the ignition needle 2021 is adjusted by adjusting the positions of the two nuts 2022 on the metal sleeve. The position of the tip of the ignition needle 2021 in the present application is determined by the reasonable discharge distance of the tip of the ignition needle 2021 from the sealing washer 2062, and in general, the tip of the ignition needle 2021 is located between the sealing washer 2062 and the protection net 4.

Further, the bottom end of the ignition needle 2021 is electrically connected with the piezoelectric ceramic 2024 through the high-voltage ignition wire 2023, the piezoelectric ceramic 2024 is installed at the gas cylinder 105, the knob switch 2025 is also connected with the piezoelectric ceramic 2024, the knob switch 2025 is also connected with the gas control valve 5, the knob switch 2025 is installed on the wall of the gas cylinder 105, the piezoelectric ignition function is realized by pressing the knob switch 2025, and the installation of the ignition needle 2021, the knob switch 2025 and the piezoelectric ceramic 2024 is the prior art and will not be repeated herein.

Preferably, an indication mark is further arranged on the wall of the bin provided with the knob switch 2025, and is used for indicating the opening and closing of the knob switch 2025 and the flow of the fuel gas.

Preferably, a bottle locking button 2026 is further arranged on the bin wall marked with the indication mark, and the bottle locking button 2026 is used for fixing the gas bottle 1051 in the gas bottle bin 105, so that gas leakage is avoided.

In other embodiments of the application, the ignition of the fuel gas can be achieved by adding a flame nozzle, an open flame ignition device, a pulse igniter and a heating device without open flame. It should be understood that a heating device without open flame generally refers to a tool or device capable of locally heating the catalytic surface to a temperature above 180 degrees celsius, which is relevant to the application of the application and will be described later.

The foregoing energy-saving pot holder 3 includes a pot holder base 301 and a pot holder support piece 302, the pot holder base 301 is detachably provided with a protection net 4, the pot holder base 301 includes three folds 3022 with ventilation holes 3021 and one non-porous fold 3023, a semicircular boss 3024 is provided in the middle of the fold 3022 with ventilation holes 3021 and the non-porous fold 3023, the pot holder support piece 302 is provided in the middle of the corresponding fold 3022 with ventilation holes 3021 or the non-porous fold 3023, and the semicircular boss 3024 is kept equal to the highest point 3025 of the pot holder support piece 302. The nonporous flange 3023 is disposed on a side of the cylinder housing 105 that reduces the transfer of heat from combustion to the cylinder 1051 and avoids hazards.

Preferably, the size of the pan frame base 301 is the same as or slightly larger than the size of the protection net 4. In this embodiment, the size of the protection net 4 is 180mm by 180mm square area.

When the application is used, the gas control valve 5 is communicated with a gas source, and the gas source can be a gas cylinder 1051 provided by the application or can be communicated with a gas source such as natural gas through an adapter. When the knob switch 2025 is pressed, the gas control valve 5 is opened, and the gas enters the furnace chamber 203 after passing through the nozzle assembly 201, the rear injection pipe 2033 and the front injection pipe 2032, and as the splitter plate 2041 is of a porous structure, the gas can be uniformly distributed on the catalytic cotton 205 and is contacted with the noble metal catalyst on the catalytic cotton 205 under the blocking and permeation actions of the splitter plate 2041; when the knob switch 2025 is pressed, the piezoelectric ceramic 2024 is subjected to pressure discharge, current is conducted through the high-voltage ignition wire 2023 and the ignition needle 2021, the electric current is discharged at the position of the needle tip of the ignition needle 2021 to form sparks, the gas at the needle tip of the ignition needle 2021 is ignited, the catalytic cotton 205 is ignited to form local instantaneous open fire, at the moment, the temperature of the noble metal catalyst loaded on the catalytic cotton 205 reaches the ignition temperature of catalytic combustion, so that low-temperature catalytic reaction is formed, and the local reaction heat is continuously diffused to the periphery of the ignition position to gradually ignite the whole catalytic cotton 205.

In addition, the application also comprises a folding positioning hinge 6, the folding positioning hinge 6 is arranged on the mounting bottom plate 104, and the folding positioning hinge 6 can enable the low-temperature infrared gas burner to incline and be in a heating mode. Preferably, four feet 106 are provided on the mounting base plate 104, the feet 106 having a height greater than the thickness of the folding positioning hinge 6.

The folding positioning hinge 6 comprises a positioning support 601 and an elastic support 602, wherein the positioning support 601 is arranged on the mounting bottom plate 104, the elastic support 602 is rotatably arranged on the positioning support 601, and the positioning support 601 is provided with a limiting structure at the tail end and the beginning end of a rotation path of the elastic support 602 and is used for limiting the rotation of the elastic support 602 and keeping stable.

Specifically, mounting slots are symmetrically formed on the positioning support 601, a limit stop 6011 is formed between the two mounting slots, one end of the two mounting slots, which is far away from each other, forms a limit structure, the limit structure comprises an opening groove 6012 and a containing groove 6013, and a bulge 6014 is formed between the opening groove 6012 and the containing groove 6013;

the elastic support 602 includes a support portion and a leg portion, where the two leg portions are respectively connected with the support portion to form a shape like a Chinese character 'ji', and the two leg portions are respectively assembled in the mounting slot. When the elastic support 602 rotates into the open groove 6012 and is clamped in the open groove 6012, the elastic support 602 plays a role in supporting the furnace body shell assembly 1, and the low-temperature infrared gas burner is in an inclined state and is in a heating mode; when the elastic support 602 rotates to the accommodating groove 6013, the low-temperature infrared gas burner is placed flat, and is in a cooking mode.

The application has the advantages that:

first, since one or two noble metal catalysts of platinum and rhodium are supported on the catalytic cotton 205, the combustion reaction of fuel gas is carried out along a new path under the action of the noble metal catalysts, the activation energy required by the new path is small, the combustion reaction speed is low, the ignition temperature is low, and the ignition can be realized at 180 ℃ generally, so that the ignition can be realized by heating equipment without open fire. The combustion reaction of the application can be carried out at a lower temperature, and the temperature of the combustion panel is about 400 ℃. The characteristic of low ignition temperature determines that the application is not easy to blow out by wind, and has good wind resistance.

Second, the catalytic cotton 205 is made of a blanket-shaped porous structure material, has a very high specific surface area, and has a surface uniformly distributed with numerous catalytic active centers (equivalent to numerous fire holes) for catalytic reaction, so long as one catalytic active center is ensured to be at a temperature 180 ℃ higher than the ignition temperature, and the catalytic active centers can be kept.

Third, when the air flow blows to the catalytic cotton 205, the air flow does not blow out, but rather the combustion is more vigorous because the contact between the fuel gas and the oxygen on the surface of the catalyst is more sufficient, which is more favorable for the catalytic combustion reaction.

Fourth, the application belongs to the true flameless combustion, no open flame exists, the combustion temperature is 180-450 ℃, the temperature is below the ignition point of most combustible materials, and the fire hazard is extremely low. When the cooker is used for heating the cooker, the bottom of the cooker is not burned, so that food is not burned, the cooker body and a non-stick coating thereof are not burned, and a healthier cooking experience can be provided.

Fifth, the noble metal catalyst greatly reduces the activation energy of the combustion reaction of the fuel gas, so that the fuel gas is ignited at a very low temperature, the energy efficiency of the fuel gas is greatly improved, the combustion reaction is more complete, and the carbon monoxide emission is lower.

Sixth, since the fuel gas is burned on the catalytic cotton 205 at a low temperature, the infrared ray having the maximum radiation intensity in the low temperature combustion has a wavelength of 4 to 6 μm, and this infrared ray can penetrate deeper into the heated object, which is also advantageous for uniformity in the depth direction (vertical direction) of heating and drying.

Seventh, compared with the size of the conventional furnace end of the card-type furnace, the size of the conventional furnace end is within phi 100mm, the size of the furnace end of one embodiment of the application is 180mm and 180mm, the heating area is more than four times that of the conventional furnace end, and the bottom of the whole cooker can be almost covered; the heat intensity is also about four times of that of a conventional furnace end, so that the heating temperature of each point of the bottom of the pot is more uniform, the horizontal heating uniformity is better, and the condition of burning caused by uneven heating, especially local hot spots can be eliminated.

Eighth, the folding positioning hinge 6 is provided, so that the two working modes of cooking and heating are switched, and the low-temperature large-area combustion provides a more comfortable and healthy cooking and heating experience.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A low temperature infrared gas burner, comprising:

the low-temperature catalytic combustion system (2) comprises a nozzle assembly (201), an ignition needle assembly (202) and a furnace chamber (203), wherein an ejector pipe installation hole (2031) is formed in the bottom of the furnace chamber (203), a front ejector pipe (2032) is arranged in the ejector pipe installation hole (2031), a porous flow distribution plate (2041) and catalytic cotton (205) are arranged above the front ejector pipe (2032) from bottom to top, precious metal catalysts are loaded on the surface of the catalytic cotton (205), and a rear ejector pipe (2033) is communicated with the lower end of the front ejector pipe (2032);

the catalytic cotton (205) is provided with a penetrating ignition needle mounting hole (2034) vertically penetrating through the furnace chamber (203) and the catalytic cotton (205) at the same position, the ignition needle assembly (202) is arranged in the penetrating ignition needle mounting hole (2034), one end of the nozzle assembly (201) is used for being connected with a fuel gas source, the other end of the nozzle assembly is communicated with the rear injection pipe (2033), and the ignition needle assembly (202) performs high-voltage discharge on the catalytic cotton (205) to locally ignite the catalytic cotton (205).

2. The low temperature infrared gas burner of claim 1, wherein: the low-temperature infrared gas burner further comprises a burner body shell assembly (1), the burner body shell assembly (1) comprises a front plate (101), a panel (102), a rear plate (103) and a mounting base plate (104), a horizontal folded edge (1021) is arranged on the inner side of the upper portion of the panel (102), the mounting base plate (104) is arranged at the bottoms of the front plate (101) and the rear plate (103), and the horizontal folded edge (1021) and the mounting base plate (104) support the low-temperature catalytic combustion system (2).

3. The low temperature infrared gas burner of claim 2, wherein: the upper portion cover of preceding injection pipe (2032) is equipped with split plate cotton support subassembly (204), the upper portion of furnace chamber (203) is buckled and is formed supporting step (2036), catalytic cotton (205) are supported jointly by supporting step (2036) and split plate cotton support subassembly (204), split plate cotton support subassembly (204) are including reposition of redundant personnel fixed plate (2042), stand (2043) and catalytic cotton support ring (2044), the cover of reposition of redundant personnel fixed plate (2042) is established the upper end outer fringe of preceding injection pipe (2032), stand (2043) set up the outer fringe of reposition of redundant personnel fixed plate (2042), shunt plate (2041) and catalytic cotton support ring (2044) set up respectively middle part and top of stand (2043).

4. The low temperature infrared gas burner of claim 3, wherein: a metal sleeve assembly (206) is arranged in the penetrating ignition needle mounting hole (2034), the metal sleeve assembly (206) comprises a sealing gasket (2062) and a sleeve (2061), the sleeve (2061) is sequentially inserted into the penetrating ignition needle mounting hole (2034) at the bottom of the catalytic cotton (205), the splitter plate cotton bracket assembly (204) and the furnace chamber (203) from top to bottom from the upper plane of the catalytic cotton (205), and the sealing gasket (2062) is arranged at the top of the sleeve (2061); the sealing gasket (2062) and the catalytic cotton supporting ring (2044) clamp the catalytic cotton (205) from the upper part and the lower part of the catalytic cotton (205) respectively; the sleeve (2061) and the ignition needle mounting hole (2034) at the furnace chamber (203) are fixed together by welding or press riveting; the ignition needle assembly (202) is disposed within the cannula (2061).

5. The low temperature infrared gas burner of claim 4, wherein: the ignition needle assembly (202) comprises an ignition needle (2021), wherein a ceramic insulator is arranged outside the ignition needle (2021), a threaded metal sleeve is coated outside the ceramic insulator, and two nuts (2022) are arranged on the metal sleeve;

the ignition needle assembly (202) is disposed in the sleeve (2061);

the bottom of the furnace chamber (203) is provided with a furnace end front support (207), the furnace end front support (207) is provided with a horizontal bending part, a mounting hole is formed in the horizontal bending part, the ignition needle assembly (202) is assembled in the mounting hole, and two nuts (2022) fix the ignition needle assembly (202) on the horizontal bending part of the furnace end front support (207);

the catalytic cotton (205) is characterized in that a protective net (4) is further arranged above the catalytic cotton (205), the needle tip of the ignition needle (2021) is located between the protective net (4) and the catalytic cotton (205), the bottom end of the ignition needle (2021) is connected with piezoelectric ceramics (2024), and electric sparks are generated when the piezoelectric ceramics (2024) are pressed.

6. The low temperature infrared gas burner of claim 2, wherein: the furnace body shell assembly (1) further comprises a gas cylinder bin (105), the gas cylinder bin (105) is arranged on one side of the furnace body shell assembly (1), a gas control valve (5) is arranged at one end of the gas cylinder bin (105), the gas control valve (5) is used for being connected with a gas cylinder (1051), and the gas control valve (5) is further communicated with the nozzle assembly (201).

7. The low temperature infrared gas burner of claim 2, wherein: still be provided with folding location hinge (6) on the mounting panel, folding location hinge (6) are including location support (601) and elastic support (602), location support (601) set up on mounting panel (104), elastic support (602) rotate and set up on location support (601), location support (601) are provided with limit structure at the end, the beginning of elastic support (602) rotation route.

8. The low temperature infrared gas burner of claim 6, wherein: the catalytic cotton (205) is provided with a pot rack base (301) above, the pot rack comprises three folds (3022) with vent holes (3021) and a non-porous fold (3023), the folds (3023) with the vent holes (3021) are rectangular and surround, and the non-porous fold (3023) is close to the gas cylinder bin (105).

9. The low temperature infrared gas burner of claim 1, wherein: the rear injection pipe (2033) is provided with a penetrating air inlet (20331) on a vertical gas flow path.