WO2019154102A1 - 燃烧室结构和燃气热水器 - Google Patents

燃烧室结构和燃气热水器 Download PDF

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Publication number
WO2019154102A1
WO2019154102A1 PCT/CN2019/073087 CN2019073087W WO2019154102A1 WO 2019154102 A1 WO2019154102 A1 WO 2019154102A1 CN 2019073087 W CN2019073087 W CN 2019073087W WO 2019154102 A1 WO2019154102 A1 WO 2019154102A1
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WO
WIPO (PCT)
Prior art keywords
combustion chamber
bracket
hole
burner
heat insulating
Prior art date
Application number
PCT/CN2019/073087
Other languages
English (en)
French (fr)
Inventor
吴录文
张洪斌
黄侨伟
吴世华
黄茂林
Original Assignee
芜湖美的厨卫电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 芜湖美的厨卫电器制造有限公司, 美的集团股份有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2019154102A1 publication Critical patent/WO2019154102A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel

Definitions

  • the present application relates to the technical field of water heaters, and in particular to a combustion chamber structure and a gas water heater using the same.
  • the main object of the present application is to provide a combustion chamber structure that can more effectively reduce the temperature rise during operation of the combustion chamber.
  • the combustion chamber structure proposed by the present application includes:
  • a housing having a combustion chamber and an opening and an air inlet opening communicating with the combustion chamber;
  • a burner the burner being housed in a combustion chamber, the burner being provided with a combustion crater;
  • An exhaust bracket connected between the burner and an inner wall of the combustion chamber, the exhaust bracket separating the combustion chamber into a combustion chamber communicating with the opening and the inlet air a flow guiding cavity communicating with the hole, the combustion burner is located in the combustion chamber, and an insulation gap communicating with the flow guiding cavity is formed between the exhaust bracket and an inner wall of the combustion chamber, the row
  • the air bracket is spaced apart from the plurality of air guiding holes and the plurality of heat insulating holes, wherein the air guiding holes communicate with the combustion chamber and the guiding cavity, and the guiding holes are disposed adjacent to the combustion fire port,
  • the heat insulating hole is in communication with the heat insulating gap, and the heat insulating hole is located at a periphery of the opening.
  • the exhaust bracket defines a through hole, and the burner is received in the through hole, and the exhaust bracket is bent from the outer edge to the edge of the hole wall of the through hole to form a mounting portion and a partition. a heat portion and a flow guiding portion, the mounting portion is connected to a circumference of the opening, and the heat insulating gap is formed between the heat insulating portion and an inner wall of the combustion chamber, the steam guiding portion and the burner.
  • the external connection, the flow guiding portion is provided with the flow guiding hole, and the mounting portion and/or the heat insulating portion is formed with the heat insulating hole.
  • the heat insulating hole is provided at a connection between the mounting portion and the heat insulating portion.
  • a surface of the heat insulating portion located in the heat insulating gap is convexly provided with a mounting protrusion, and the mounting protrusion abuts against an inner wall of the combustion chamber.
  • a plurality of protrusions are extended on opposite sides of the burner, and the guiding portion extends away from an end of the heat insulating portion to form a latching portion, and the engaging portion is opened a card slot, the bump being inserted into the card slot.
  • the exhaust bracket includes a first bracket and a second bracket that are oppositely disposed, and a third bracket and a fourth bracket that are oppositely disposed.
  • the first bracket, the third bracket, the second bracket, and the fourth bracket are sequentially Enclosing the circumference of the burner, the first bracket and the second bracket are formed with the card slot.
  • first bracket and the third bracket are an integrally formed structure, and the second bracket and the fourth bracket are integrally formed; or
  • the first bracket, the second bracket, the third bracket and the fourth bracket are integrally formed structures.
  • the combustion chamber structure further includes a fixing bracket connected between an inner wall of the combustion chamber and an outer portion of the combustor, and the fixing bracket is located at the exhaust bracket and the Between the air inlet holes.
  • the fixing bracket is provided with a wind guiding through hole, and two ends of the air guiding through hole respectively communicate with the air inlet hole and the guiding hole.
  • the burner is provided with a first gas inlet and a second gas inlet
  • the housing is further provided with a first mounting via and a second mounting via communicating with the combustion chamber, the first The gas inlet is in communication with the first mounting via, and the second gas inlet is in communication with the second mounting via.
  • the present application also provides a gas water heater comprising a fan and the above-described combustion chamber structure, the fan being disposed adjacent to the opening, and the fan pulsing air to allow air to enter the guiding cavity from the air inlet hole , divided into two ways, one pass through the diversion hole, the combustion chamber in turn, and then discharged from the opening, and the other pass through the insulated gap, and then discharged through the insulated hole.
  • the air is divided into two paths from the air inlet hole into the flow guiding cavity of the combustion chamber, and one way passes through the diversion hole and the combustion chamber in turn, and is discharged from the opening, and the other path passes through the heat insulation gap. It is discharged by the heat insulation hole.
  • the burner By connecting the burner to the inner wall of the combustion chamber by setting the exhaust bracket, the burner is limited and fixed, the problem of sloshing of the burner is avoided, and a diversion hole is provided through the exhaust bracket for guiding the diversion chamber
  • the air inside is diverted into the combustion chamber, and the air guided by the diversion hole can replenish the combustion of the combustion crater with secondary air, which is beneficial to more complete combustion of the gas, and the energy utilization rate of the gas combustion is higher and lower.
  • the emission of pollutants such as nitrogen oxides caused by incomplete combustion is energy-saving and environmentally friendly; at the same time, the diversion holes provided on the exhaust bracket can guide the air with lower temperature in the diversion chamber into the combustion chamber, and A flowing air layer is formed between the combustion crater of the burner and the inner wall of the combustion chamber, and the flowing air layer can take away a large amount of heat, effectively reducing the temperature rise of the casing when the combustion chamber structure works, and burning the gas The heat generated is fully applied to the heating of water to improve the heating efficiency.
  • pollutants such as nitrogen oxides caused by incomplete combustion
  • the insulating gap to the insulating hole generates another flowing air layer during operation, and the other air layer can carry away a large amount of heat absorbed by the exhaust bracket, thereby
  • the exhaust bracket is cooled, and the inner wall of the combustion chamber can be insulated and cooled to better reduce the temperature rise of the casing.
  • FIG. 1 is a schematic structural view of an embodiment of a combustion chamber structure of the present application.
  • Figure 2 is a front elevational view of the combustion chamber structure shown in Figure 1;
  • Figure 3 is a bottom plan view of the combustion chamber structure shown in Figure 1;
  • Figure 4 is a plan view of the combustion chamber structure shown in Figure 1;
  • Figure 5 is a schematic view showing the internal structure of the combustion chamber structure shown in Figure 1;
  • Figure 6 is an exploded view of the combustion chamber structure shown in Figure 1;
  • Figure 7 is a schematic structural view of the exhaust bracket in the combustion chamber structure shown in Figure 6;
  • Figure 8 is a plan view of the exhaust bracket shown in Figure 7.
  • first”, “second”, and the like in this application are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. Nor is it within the scope of protection required by this application.
  • fixed may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • fix may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • specific meanings of the above terms in the present application can be understood on a case-by-case basis.
  • the present application proposes a combustor structure 100.
  • a combustion chamber structure 100 in an embodiment of the present application includes:
  • a housing 10 is provided with a combustion chamber 101, and an opening 102 and an air inlet opening 103 communicating with the combustion chamber 101;
  • the burner 20 is housed in the combustion chamber 101, and the burner 20 is provided with a combustion burner 201;
  • the exhaust bracket 30 is connected between the combustor 20 and the inner wall of the combustion chamber 101.
  • the exhaust bracket 30 divides the combustion chamber 101 into a combustion chamber 1011 communicating with the opening 102 and a diversion flow communicating with the air inlet 103.
  • the chamber 1012 has a combustion vent 201 located in the combustion chamber 1011.
  • An insulating gap 1014 is formed between the exhaust bracket 30 and the inner wall of the combustion chamber 101.
  • the exhaust bracket 30 is spaced apart from the plurality of diversions.
  • the aperture 303 is located at the periphery of the opening 102.
  • the casing 10 has a rectangular tubular shape with the opening facing upward and the bottom closed, and the air inlet hole 103 is opened at the bottom of the casing 10, and communicates up and down to form the combustion chamber 101.
  • the combustor structure 100 of the present application may be selected for use in a rich-lean combustor, i.e., optionally in a combustor combusted with rich gas and light gas input for mixed combustion.
  • the exhaust bracket 30 and the inner wall of the combustion chamber 101 may be fixedly connected or detachably connected by one, two or more combinations of snapping, screwing or welding;
  • the bracket 30 and the exterior of the burner 20 may be fixedly connected or detachably connected by one, two or more combinations of snapping, screwing or welding, that is, through the exhaust bracket 30.
  • the exhaust bracket 30 can be made of a material such as a metal that is resistant to high temperatures and hard.
  • the guiding hole 301 mainly serves to conduct and guide the flow of the gas.
  • the plurality of guiding holes 301 can be evenly spaced and disposed around the combustion burner 201 of the burner 20, and the guide on the exhaust bracket 30.
  • the flow holes 301 may be arranged in a radial arrangement, a mesh arrangement or an array arrangement, etc., so that the air distribution of the flow guiding holes 301 into the combustion chamber 1011 is more uniform, thereby reducing the air flow in the combustion chamber 101.
  • the generated eddy current is more favorable for replenishing the combustion of the burner 20 with secondary air, so that the combustion of the burner 20 is more sufficient, the combustion flame of the combustion burner 201 is more uniform, and the whistling generated in the combustion can be further eliminated.
  • the shape of the guiding hole 301 can be various, such as a circle, an ellipse, a triangle, a quadrangle, a polygon, etc., and can be set according to actual conditions in a specific application. Further, the number of the flow guiding holes 301, the size of the aperture of the flow guiding holes 301, and the size of the spacing between the adjacent flow guiding holes 301 can be set according to a specific application.
  • the heat insulating gap 1014 can pass through the flowing air, mainly functions as heat insulation and cooling, and is discharged to the outside of the casing 10 by the heat insulating hole 303.
  • the heat insulating hole 303 has the function of guiding the gas flow direction, and optionally, a plurality of The heat insulating holes 303 may be evenly spaced and disposed around the outer circumference of the exhaust bracket 30 (around the circumference of the opening 102), and the heat insulating holes 303 on the exhaust bracket 30 may be arranged in a radial arrangement, a mesh arrangement or an array.
  • the arrangement and the like make the heat insulating hole 303 guide the air flow more uniformly, thereby reducing the eddy current generated by the air flow in the combustion chamber 101, and uniformly cooling the temperature, and further reducing the temperature rise of the casing 10.
  • the shape of the heat insulating hole 303 can be various, such as a circle, an ellipse, a triangle, a quadrangle, a polygon, etc., and can be set according to actual conditions in a specific application. Further, the number of the heat insulating holes 303, the hole size of the heat insulating holes 303, and the size of the gap between the adjacent heat insulating holes 303 can be set depending on the specific application.
  • the combustor structure 100 of the present application may adopt a strong pumping type combustion chamber structure, that is, by providing a fan 40, the fan 40 pulsing air, and the air enters the diversion chamber 1012 of the combustion chamber 101 from the air inlet hole 103 and is divided into two paths, one way. After passing through the air guiding hole 301 and the combustion chamber 1011 in sequence, the air is discharged from the opening 102, and the other path passes through the heat insulating gap 1014 and is discharged through the heat insulating hole 303.
  • the combustor structure 100 of the present application may also adopt a strong drum type combustor structure.
  • air is blown to allow air to enter the diversion chamber 1012 of the combustion chamber 101 from the air inlet hole 103 and then split into two paths, one by one. After passing through the air guiding hole 301 and the combustion chamber 1011, the air is discharged from the opening 102, and the other path passes through the heat insulating gap 1014 and is discharged through the heat insulating hole 303.
  • the air enters the diversion chamber 1012 of the combustion chamber 101 from the air inlet hole 103 and is divided into two paths, and one passage passes through the diversion hole 301 and the combustion chamber 1011 in sequence, and is discharged from the opening 102.
  • the other path is discharged through the heat insulating hole 303 after passing through the heat insulating gap 1014.
  • the burner 20 is connected to the inner wall of the combustion chamber 101 by providing the exhaust bracket 30, thereby limiting the fixing of the burner 20, avoiding the problem of the sloshing of the burner 20, and providing the flow guiding hole 301 through the exhaust bracket 30,
  • the air in the diversion chamber 1012 is diverted into the combustion chamber 1011, and the air guided by the diversion hole 301 can replenish the combustion of the combustion port 201 to facilitate the combustion of the gas more fully.
  • the energy utilization rate of combustion is higher, and the emission of pollutants such as nitrogen oxides caused by incomplete combustion is also reduced, and energy saving and environmental protection are provided; meanwhile, the flow guiding hole 301 provided on the exhaust bracket 30 can be used to guide the inside of the guiding cavity 1012.
  • the lower temperature air is conducted into the combustion chamber 1011, and a flowing air layer is formed between the combustion burner 201 of the burner 20 and the inner wall of the combustion chamber 101.
  • the flowing air layer can carry a large amount of heat, effectively
  • the temperature rise of the casing 10 during operation of the combustion chamber structure 10 is reduced, and the heat generated by the combustion of the gas can be sufficiently applied to the heating of the water to improve the heating efficiency.
  • the heat insulating gap 1014 and the heat insulating hole 303 by providing the heat insulating gap 1014 and the heat insulating hole 303, the heat insulating gap 1014 to the heat insulating hole 303 generates another flowing air layer during operation, and the other flowing air layer can adsorb the exhaust bracket 30.
  • a large amount of heat is taken away to cool the exhaust bracket 30, and the inner wall of the combustion chamber 101 can be insulated and cooled to better reduce the temperature rise of the casing 10.
  • the exhaust bracket 30 defines a through hole (not shown).
  • the burner 20 is received in the through hole, and the exhaust bracket 30 is bent from the outer edge to the edge of the through hole.
  • the mounting portion 30a, the heat insulating portion 30b, and the flow guiding portion 30c are folded, the mounting portion 30a is connected to the periphery of the opening 102, and the heat insulating portion 30b and the inner wall of the combustion chamber 101 form an insulating gap 1014, and the flow guiding portion 30c and the burning portion
  • the external connection of the device 20 is such that the flow guiding portion 30c is provided with a flow guiding hole 301, and the mounting portion 30a and/or the heat insulating portion 30b are formed with a heat insulating hole 303.
  • the exhaust bracket 30 has a square shape in plan view, and a through hole is formed in the frame.
  • the burner 20 houses and installs a hole wall connected to the through hole, and the cross section of the exhaust bracket 30 is formed.
  • the zigzag structure that is, as shown in FIG. 7, the mounting portion 30a, the heat insulating portion 30b, and the flow guiding portion 30c are all disposed at an angle, optionally between the mounting portion 30a, the heat insulating portion 30b, and the flow guiding portion 30c.
  • the mounting portion 30a is for mounting and connecting with the periphery of the opening 102 of the casing 10
  • the heat insulating portion 30b is for forming an insulating gap 1014 with the inner wall of the combustion chamber 101 for heat insulation and cooling
  • the flow guiding portion 30c It is used to form the flow guiding hole 301, and the secondary air is supplemented for the combustion of the burner 20 through the flow guiding hole 301, thereby improving the combustion efficiency and reducing the emission of polluted air caused by incomplete combustion.
  • a heat insulating hole 303 is provided at a joint between the mounting portion 30a and the heat insulating portion 30b.
  • a heat insulating hole 303 is provided at a joint between the mounting portion 30a and the heat insulating portion 30b. Since the two adjacent plates are easy to form a dead angle, and the gas flow here is poor, in order to avoid the occurrence of the adjacent dead angle, the gas flow performance at the place is improved, and the cooling effect is better, through the mounting portion.
  • the heat insulating hole 303 is disposed at the connection between the 30a and the heat insulating portion 30b, so that the air below can be quickly discharged upwardly through the heat insulating hole 303, thereby avoiding the accumulation of gas in the adjacent portion, and achieving better heat insulation and cooling. The effect of temperature rise of the casing 10 during operation is reduced.
  • a mounting protrusion 304 is protruded from the surface of the heat insulating portion 30b in the heat insulating gap 1014, and the mounting protrusion 304 abuts against the inner wall of the combustion chamber 101.
  • the surface of the heat insulating portion 30b located in the heat insulating gap 1014 is convexly provided with a mounting protrusion 304, and the positioning between the heat insulating portion 30b and the inner wall of the combustion chamber 101 is completed, and then the exhaust bracket 30 can be welded or the like. It is fixedly connected to the inner wall of the combustion chamber 101; that is, by providing the mounting protrusions 304 to facilitate the positioning of the exhaust bracket 30 when it is installed, the connection of the exhaust bracket 30 is facilitated, and the assembly efficiency is improved.
  • a plurality of bumps 21 are formed on opposite sides of the burner 20 , and the guide portion 30 c extends away from the end of the heat insulating portion 30 b to form a latching portion 30 d , and the latching portion 30 d is opened.
  • a plurality of burner monoliths are arranged side by side in the burner 20 , and the burners are formed into a single piece of the bumps 21 , and in order to fix the single piece of the burner and further fix the burner 20 ,
  • the card slot 302 is engaged with the bump 21, and the slot direction of the slot 302 is directed inward, that is, each burner is clamped and fixed in the combustion chamber 101, thereby burning in the front, rear, left and right directions.
  • the single piece is fixed by the limit, and the problem that the burner 20 is shaken during operation is avoided, so that the exhaust bracket 30 has the function of guiding the air at the same time and fixing the single piece of the burner.
  • the exhaust bracket 30 includes a first bracket 31 and a second bracket 32 that are oppositely disposed, a third bracket 33 and a fourth bracket 34 that are oppositely disposed, and the first bracket 31, the third bracket 33, the second bracket 32, and the first bracket
  • the four brackets 34 are sequentially enclosed around the burner 20, and the first bracket 31 and the second bracket 32 are each formed with a card slot 302.
  • the first bracket 31, the third bracket 33, the second bracket 32, and the fourth bracket 34 are all provided with a guiding hole 301, so as to facilitate more reasonable and more uniform air distribution, and help to provide uniformity.
  • the supplement of the secondary air promotes the full combustion of the gas, and can reduce the generation of the vortex of the air in the combustion chamber 101, forming a layer of air surrounding the combustion port 201 of the burner 20, which is more effective for the heat insulation and cooling effect.
  • the first bracket 31, the third bracket 33, the second bracket 32, and the fourth bracket 34 are all provided with a heat insulating hole 303, which is more reasonable and more uniform for the air guiding flow, and forms a surrounding air combustion chamber 101.
  • the flowing air layer of the opening 102 is more effective in insulating and cooling the inner wall of the combustion chamber 101.
  • a plurality of burner monoliths are arranged side by side in the burner 20 , and the burners are formed into a single piece of the bumps 21 , and in order to fix the single piece of the burner and further fix the burner 20 ,
  • the latching holes 21 are engaged with the latches 21 through the oppositely disposed first brackets 31 and the second brackets 32, and the slots of the slot 302 are oriented inward, that is, each burner is clamped and fixed.
  • the burners are individually fixed in the front, rear, left and right directions, and the problem of the sloshing of the burner 20 during operation is avoided, so that the first bracket 31 and the second bracket 32 have both The function of diversion air and limit fixed burner monolith.
  • first bracket 31 and the third bracket 33 are integrally formed, and the second bracket 32 and the fourth bracket 34 are integrally formed, thereby reducing the first bracket 31 and the third bracket.
  • the steps of mounting the bracket 33, the second bracket 32 and the fourth bracket 34 respectively improve the assembly efficiency;
  • first bracket 31, the second bracket 32, the third bracket 33, and the fourth bracket 34 are integrally formed, and the first bracket 31, the second bracket 32, and the third are further reduced.
  • the steps of mounting the bracket 33 and the fourth bracket 34 respectively improve the assembly efficiency.
  • the combustion chamber structure 100 further includes a fixing bracket 50 connected between the inner wall of the combustion chamber 101 and the outside of the burner 20, and fixed.
  • the bracket 50 is located between the exhaust bracket 30 and the air inlet aperture 103.
  • the fixing bracket 50 is provided with a wind guiding through hole 501, and both ends of the air guiding through hole 501 communicate with the air inlet hole 103 and the guiding hole 301, respectively.
  • the air guiding hole 501 has a larger hole diameter than the guiding hole 301, thereby facilitating the rapid passage of air.
  • the air guiding through hole 501 increases the air intake amount, and then the air distribution and adjustment are uniformly performed through the air guiding hole 301.
  • the burner 20 is provided with a first gas inlet 202 and a second gas inlet 203
  • the housing 10 is further provided with a first mounting via 104 communicating with the combustion chamber 101 and
  • the second mounting via 105 communicates with the first mounting via 104 and the second gas inlet 203 is in communication with the second mounting via 105.
  • the first gas inlet 202 and the second gas inlet 203 are respectively used for input of rich gas and light gas, and the installation and passage of the gas pipeline are facilitated by the first mounting hole 104 and the second mounting hole 105.
  • the present application also provides a gas water heater including a fan 40 and a combustor structure 100.
  • the specific structure of the combustor structure 100 refers to the above embodiment, and since the gas water heater adopts all the technical solutions of all the above embodiments, At least the effects of the technical solutions of the above embodiments are not repeated here.
  • the fan 40 pulsates the air, so that the air enters the guiding cavity 1012 from the air inlet hole 103, and is divided into two paths. After passing through the guiding hole 301 and the combustion chamber 1011 in sequence, the air is discharged from the opening 102. The other path is discharged through the heat insulating hole 303 after passing through the heat insulating gap 1014.
  • the fan 40 is disposed adjacent the opening 102.
  • the fan 40 can adopt various types of fans, such as a centrifugal fan, a cross-flow fan or an axial fan, etc., and only the fan 40 can be used to draw air, and the air in the combustion chamber 101 can be extracted from the opening 102, which can be strongly pumped.
  • the purpose of the type of combustion chamber to create air flow conditions is that the specific type of fan 40 can be selected according to the actual situation.
  • the sealing requirement of the combustion chamber 101 is reduced, so that the combustion chamber 101 can be set to be not fully sealed, reducing the risk of vibration and howling, and satisfying the gas water heater. User requirements to reduce noise.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

本申请公开一种燃烧室结构和应用该燃烧室结构的燃气热水器。燃烧室结构，包括：壳体，壳体内设有燃烧室、和与该燃烧室连通的开口和进风孔；燃烧器，燃烧器容置于燃烧室内，燃烧器设有燃烧火口；及排气支架，排气支架连接于燃烧器和燃烧室内壁之间，排气支架将燃烧室分隔为与开口连通的燃烧腔和与进风孔连通的导流腔，燃烧火口位于燃烧腔内，排气支架和燃烧室的内壁之间还形成有与导流腔连通的隔热间隙，排气支架间隔开设有多个导流孔和多个隔热孔，导流孔连通燃烧腔和导流腔，且导流孔邻近于燃烧火口设置，隔热孔与隔热间隙连通，且隔热孔位于开口的周缘。

Description

燃烧室结构和燃气热水器
相关申请
本申请要求于2018年2月10日提交中国专利局、申请号为201810141001.6、申请名称为“燃烧室结构和燃气热水器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及热水器技术领域，特别涉及一种燃烧室结构和应用该燃烧室结构的燃气热水器。
背景技术
现有的燃烧室结构在工作时，由于燃烧室内的燃烧器燃烧而产生非常高的温度，从而导致燃烧室温升过高的问题。
申请内容
本申请的主要目的是提供一种燃烧室结构，能够更加有效地降低了燃烧室工作时的温升。
为实现上述目的，本申请提出的燃烧室结构，包括：
壳体，所述壳体内设有燃烧室、和与该燃烧室连通的开口和进风孔；
燃烧器，所述燃烧器容置于燃烧室内，所述燃烧器设有燃烧火口；及
排气支架，所述排气支架连接于所述燃烧器和所述燃烧室内壁之间，所述排气支架将所述燃烧室分隔为与所述开口连通的燃烧腔和与所述进风孔连通的导流腔，所述燃烧火口位于所述燃烧腔内，所述排气支架和所述燃烧室的内壁之间还形成有与所述导流腔连通的隔热间隙，所述排气支架间隔开设有多个导流孔和多个隔热孔，所述导流孔连通所述燃烧腔和所述导流腔，且所述导流孔邻近于所述燃烧火口设置，所述隔热孔与所述隔热间隙连通，且所述隔热孔位于所述开口的周缘。
可选地，所述排气支架开设有一通孔，所述燃烧器收容于所述通孔内，所述排气支架由其外边缘至通孔的孔壁边缘依次弯折形成安装部、隔热部及导流部，所述安装部连接于所述开口的周缘，所述隔热部和所述燃烧室的内壁之间形成所述隔热间隙，所述导流部与所述燃烧器的外部连接，所述导流部开设有所述导流孔，所述安装部和/或所述隔热部形成有所述隔热孔。
可选地，所述安装部与所述隔热部的连接处设有所述隔热孔。
可选地，所述隔热部位于所述隔热间隙内的表面凸设有安装凸起，所述安装凸起抵接于所述燃烧室的内壁。
可选地，所述燃烧器的相对两侧均延伸凸设有多个凸块，所述导流部远离所述隔热部的端部延伸形成卡接部，所述卡接部开设有多个卡槽，所述凸块插接于所述卡槽。
可选地，所述排气支架包括相对设置的第一支架和第二支架、相对设置的第三支架和第四支架，所述第一支架、第三支架、第二支架及第四支架依次围合于所述排布于所述燃烧器的四周，所述第一支架和所述第二支架均形成有所述卡槽。
可选地，所述第一支架和所述第三支架为一体成型结构，所述第二支架和所述第四支架为一体成型结构；或者，
所述第一支架、所述第二支架、所述第三支架及所述第四支架为一体成型结构。
可选地，所述燃烧室结构还包括固定支架，所述固定支架连接于所述燃烧室的内壁和所述燃烧器的外部之间，且所述固定支架位于所述排气支架和所述进风孔之间。
可选地，所述固定支架开设有导风过孔，所述导风过孔的两端分别连通所述进风孔和所述导流孔。
可选地，所述燃烧器设有第一燃气进口和第二燃气进口，所述壳体还开设有与所述燃烧室连通的第一安装过孔和第二安装过孔，所述第一燃气进口与所述第一安装过孔连通，所述第二燃气进口与所述第二安装过孔连通。
本申请还提出一种燃气热水器，包括风机和上述的燃烧室结构，所述风机邻近所述开口设置，且所述风机抽动空气，以使空气从所述进风孔进入所述导流腔后，分为成两路，一路依次通过导流孔、燃烧腔后，由所述开口排出，另一路经过隔热间隙后，由所述隔热孔排出。
本申请技术方案的燃烧室结构在使用时，空气从进风孔进入燃烧室的导流腔后分成两路，一路依次通过导流孔、燃烧腔后由开口排出，另一路经过隔热间隙后由隔热孔排出。通过设置排气支架将燃烧器与燃烧室的内壁连接，从而对燃烧器进行限位固定，避免燃烧器出现晃动的问题，以及通过于排气支架设置导流孔，以用于将导流腔内的空气导流至燃烧腔内，该导流孔导流的空气能够对燃烧火口的燃烧进行二次空气的补充，利于燃气更加充分的燃烧，燃气燃烧的能量利用率更高，也降低了不完全燃烧而导致的氮氧化物等污染物的排放，节能环保；同时，于排气支架上设置的导流孔能够将导流腔内温度较低的空气导流至燃烧腔内，并在燃烧器的燃烧火口与燃烧室的内壁之间形成一流动的空气层，该流动的空气层能够带走大量的热量，有效地降低燃烧室结构工作时壳体的温升，并能将燃气燃烧产生的热量充分应用于对水的加热，提高加热效率。同时，通过设置隔热间隙和隔热孔，工作时，该隔热间隙至隔热孔会产生另一流动的空气层，该另一空气层能够将排气支架吸附的大量热量带走，从而对排气支架进行降温，并且能够对燃烧室的内壁进行隔热降温，起到较佳的降低壳体温升的作用。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请燃烧室结构一实施例的结构示意图；
图2为图1所示的燃烧室结构的前视图；
图3为图1所示的燃烧室结构的仰视图；
图4为图1所示的燃烧室结构的俯视图；
图5为图1所示的燃烧室结构的内部结构示意图；
图6为图1所示的燃烧室结构的爆炸图；
图7为图6所示的燃烧室结构中排气支架的结构示意图；
图8为图7所示的排气支架的俯视图。
附图标号说明：
标号 名称 标号 名称
100 燃烧室结构 301 导流孔
10 壳体 302 卡槽
101 燃烧室 303 隔热孔
1011 燃烧腔 304 安装凸起
1012 导流腔 30a 安装部
1014 隔热间隙 30b 隔热部
102 开口 30c 导流部
103 进风孔 30d 卡接部
104 第一安装过孔 31 第一支架
105 第二安装过孔 32 第二支架
20 燃烧器 33 第三支架
201 燃烧火口 34 第四支架
202 第一燃气进口 40 风机
203 第二燃气进口 50 固定支架
21 凸块 501 导风过孔
30 排气支架
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本申请中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请提出一种燃烧室结构100。
请结合参照图1至5所示，本申请一实施例中的燃烧室结构100，包括：
壳体10，壳体10内设有燃烧室101、和与该燃烧室101连通的开口102和进风孔103；
燃烧器20，燃烧器20容置于燃烧室101内，燃烧器20设有燃烧火口201；及
排气支架30，排气支架30连接于燃烧器20和燃烧室101内壁之间，排气支架30将燃烧室101分隔为与开口102连通的燃烧腔1011和与进风孔103连通的导流腔1012，燃烧火口201位于燃烧腔1011内，排气支架30和燃烧室101的内壁之间还形成有与导流腔1012连通的隔热间隙1014，排气支架30间隔开设有多个导流孔301和多个隔热孔303，导流孔301连通燃烧腔1011和导流腔1012，且导流孔301邻近于燃烧火口201设置，隔热孔303与隔热间隙1014连通，且隔热孔303位于开口102的周缘。
如图1和图5所示，壳体10呈开口朝上、底部闭合的方形筒状，其进风孔103开设在壳体10的底部，上下连通形成燃烧室101。具体地，本申请的燃烧室结构100可选用于浓淡型燃烧室，即，可选地应用于浓燃气和淡燃气输入进行混合燃烧的燃烧室中。
本申请中排气支架30与燃烧室101的内壁之间可通过卡接、螺纹连接或焊接等方式中的一种、两种或者多种的组合进行固定式连接或可拆卸式连接；排气支架30与燃烧器20的外部之间可通过卡接、螺纹连接或焊接等方式中的一种、两种或者多种的组合进行固定式连接或可拆卸式连接，即，通过排气支架30以将燃烧器20的外部与燃烧室101的内壁之间连接，对燃烧器20进行限位固定，限制燃烧器20的移动并避免其出现晃动的问题。排气支架30可采用耐高温、质地较硬的金属等材料制成。
导流孔301主要起到导通并引导气体流向的作用，可选地，多个导流孔301可间隔均匀并环绕于燃烧器20的燃烧火口201的周围设置，排气支架30上的导流孔301可呈辐射状排布、网状排布或阵列状排布等等，使得导流孔301导流进入燃烧腔1011内的空气分布更加的均匀，从而减少了燃烧室101内空气流动产生的涡流，更有利于对燃烧器20的燃烧进行二次空气的补充，使燃烧器20的燃烧更加的充分，燃烧火口201的燃烧火焰更加的均匀，并能进一步消除燃烧中产生的啸叫噪音，应用于燃气热水器时能够提升用户使用的体验舒适值。其中，导流孔301的形状设计可有多种，譬如圆形、椭圆形、三角形、四边形及多边形等等，具体应用中可根据实际情形进行设定。此外，导流孔301的数量、导流孔301的孔径大小以及相邻的导流孔301之间的间距大小等等均可根据具体应用进行设定。
隔热间隙1014内可通过流动的空气，主要起到隔热降温的作用，并且由隔热孔303向壳体10外排出，隔热孔303具有引导气体流向的作用，可选地，多个隔热孔303可间隔均匀并环绕于排气支架30的外周缘设置（环绕开口102的周缘），排气支架30上的隔热孔303可呈辐射状排布、网状排布或阵列状排布等等，使得隔热孔303导流空气气流更加均匀，从而减少了燃烧室101内空气流动产生的涡流，且均匀降温，更有降低壳体10的温升。其中，隔热孔303的形状设计可有多种，譬如圆形、椭圆形、三角形、四边形及多边形等等，具体应用中可根据实际情形进行设定。此外，隔热孔303的数量、隔热孔303的孔径大小以及相邻的隔热孔303之间的间距大小等等均可根据具体应用进行设定。
本申请中燃烧室结构100可选采用强抽型燃烧室结构，即，通过设置风机40，风机40抽动空气，空气从进风孔103进入燃烧室101的导流腔1012后分成两路，一路依次通过导流孔301、燃烧腔1011后由开口102排出，另一路经过隔热间隙1014后由隔热孔303排出。或者，本申请中燃烧室结构100也可采用强鼓型燃烧室结构，通过设置风机，鼓吹空气，以使空气从进风孔103进入燃烧室101的导流腔1012后分成两路，一路依次通过导流孔301、燃烧腔1011后由开口102排出，另一路经过隔热间隙1014后由隔热孔303排出。
本申请技术方案的燃烧室结构100在使用时，空气从进风孔103进入燃烧室101的导流腔1012后分成两路，一路依次通过导流孔301、燃烧腔1011后由开口102排出，另一路经过隔热间隙1014后由隔热孔303排出。通过设置排气支架30将燃烧器20与燃烧室101的内壁连接，从而对燃烧器20进行限位固定，避免燃烧器20出现晃动的问题，以及通过于排气支架30设置导流孔301，以用于将导流腔1012内的空气导流至燃烧腔1011内，该导流孔301导流的空气能够对燃烧火口201的燃烧进行二次空气的补充，利于燃气更加充分的燃烧，燃气燃烧的能量利用率更高，也降低了不完全燃烧而导致的氮氧化物等污染物的排放，节能环保；同时，于排气支架30上设置的导流孔301能够将导流腔1012内温度较低的空气导流至燃烧腔1011内，并在燃烧器20的燃烧火口201与燃烧室101的内壁之间形成一流动的空气层，该流动的空气层能够带走大量的热量，有效地降低燃烧室结构10工作时壳体10的温升，并能将燃气燃烧产生的热量充分应用于对水的加热，提高加热效率。同时，通过设置隔热间隙1014和隔热孔303，工作时，该隔热间隙1014至隔热孔303会产生另一流动的空气层，该另一流动的空气层能够将排气支架30吸附的大量热量带走，从而对排气支架30进行降温，并且能够对燃烧室101的内壁进行隔热降温，起到较佳的降低壳体10温升的作用。
请结合参照图5图7所示，排气支架30开设有一通孔（未图示），燃烧器20收容于通孔内，排气支架30由其外边缘至通孔的孔壁边缘依次弯折形成安装部30a、隔热部30b及导流部30c，安装部30a连接于开口102的周缘，隔热部30b和燃烧室101的内壁之间形成隔热间隙1014，导流部30c与燃烧器20的外部连接，导流部30c开设有导流孔301，安装部30a和/或隔热部30b形成有隔热孔303。
本申请中，如图4所示，排气支架30俯视结构为一方框形，方框内形成通孔，燃烧器20收容并安装连接于通孔的孔壁，排气支架30的截面形成呈Z字形结构，即，如图7所示，安装部30a、隔热部30b及导流部30c均呈夹角设置，可选地，安装部30a、隔热部30b及导流部30c之间均呈大致90度设置，安装部30a用于与壳体10的开口102周缘安装连接，隔热部30b用于与燃烧室101的内壁形成隔热间隙1014，以隔热降温，导流部30c用于形成导流孔301，通过导流孔301来为燃烧器20的燃烧提供二次空气的补充，提高燃烧效率，降低不完全燃烧而导致的污染空气的排放。
请结合参照图5和7所示，安装部30a与隔热部30b的连接处设有隔热孔303。
本申请中安装部30a与隔热部30b的连接处设有隔热孔303。由于两块邻接的板体之间易形成死角，且此处的气体流动性较差，为避免邻接处死角的产生，提高该处气体流动性能，起到更好的降温效果，通过在安装部30a与隔热部30b的连接处设置隔热孔303，使得下方的空气能够快速冲此处的隔热孔303向上排出，避免了邻接处气体的推积，并且能够达到更佳的隔热降温、减少壳体10工作时温升的效果。
请结合参照图5和图7所示，隔热部30b位于隔热间隙1014内的表面凸设有安装凸起304，安装凸起304抵接于燃烧室101的内壁。
本申请中隔热部30b位于隔热间隙1014内的表面凸设有安装凸起304，完成隔热部30b和燃烧室101的内壁之间的定位，而后可通过焊接等方式将排气支架30固定连接于燃烧室101的内壁；即，通过设置安装凸起304，以便于排气支架30安装时的定位，便于排气支架30的连接固定，提高装配效率。
请结合参照图6所示，燃烧器20的相对两侧均延伸凸设有多个凸块21，导流部30c远离隔热部30b的端部延伸形成卡接部30d，卡接部30d开设有多个卡槽302，凸块21插接于卡槽302。
具体地，如图6所示，燃烧器20内并排设有多个燃烧器单片，燃烧器单片形成凸块21，为了将燃烧器单片进行限位固定，并进一步固定燃烧器20，通过卡槽302与凸块21卡接配合，且卡槽302的槽口方向均朝内，即，将每一燃烧器单片夹持固定于燃烧室101内，从而在前后左右方向上对燃烧器单片均进行限位固定的作用，避免燃烧器20在工作时出现晃动等问题，从而使得排气支架30同时具有导流空气、限位固定燃烧器单片的作用。
进一步地，排气支架30包括相对设置的第一支架31和第二支架32、相对设置的第三支架33和第四支架34，第一支架31、第三支架33、第二支架32及第四支架34依次围合于排布于燃烧器20的四周，第一支架31和第二支架32均形成有卡槽302。
可选地，第一支架31、第三支架33、第二支架32及第四支架34上均设置有导流孔301，以利于空气导流的分配更加合理、更加均匀，有助均匀提供二次空气的补充、促进燃气充分燃烧，并能减少燃烧室101内空气涡流的产生，形成环绕燃烧器20燃烧火口201的流动的空气层，对隔热降温效果更加显著有效。可选地，第一支架31、第三支架33、第二支架32及第四支架34上均设置有隔热孔303，利于空气导流的分配更加合理、更加均匀，形成环绕燃烧室101的开口102的流动的空气层，对燃烧室101的内壁隔热降温效果更加显著有效。
具体地，如图6所示，燃烧器20内并排设有多个燃烧器单片，燃烧器单片形成凸块21，为了将燃烧器单片进行限位固定，并进一步固定燃烧器20，通过相对设置的第一支架31和第二支架32上的卡槽302与凸块21卡接配合，且卡槽302的槽口方向均朝内，即，将每一燃烧器单片夹持固定于燃烧室101内，从而在前后左右方向上对燃烧器单片均进行限位固定的作用，避免燃烧器20在工作时出现晃动等问题，从而使得第一支架31和第二支架32同时具有导流空气、限位固定燃烧器单片的作用。
可选地，在本申请一实施例中，第一支架31和第三支架33为一体成型结构、第二支架32和第四支架34为一体成型结构，从而减少了第一支架31和第三支架33、第二支架32和第四支架34分别安装的步骤，提升了装配效率；
或者，在本申请另一实施例中，第一支架31、第二支架32、第三支架33及第四支架34为一体成型结构，进一步减少了第一支架31、第二支架32、第三支架33及第四支架34分别安装的步骤，并提升了装配效率。
请结合参照图5所示，为了进一步对燃烧器20进行限位固定，燃烧室结构100还包括固定支架50，固定支架50连接于燃烧室101的内壁和燃烧器20的外部之间，且固定支架50位于排气支架30和进风孔103之间。
进一步地，固定支架50开设有导风过孔501，导风过孔501的两端分别连通进风孔103和导流孔301。
本申请中，空气从壳体10的底部开设的进风孔103进入燃烧室101内，并从导风过孔501而穿过固定支架50，并进一步经过排气支架30设置的导流孔301进入燃烧腔1011或者进一步经过隔热间隙1014并从隔热孔303排出。即，如图5所示，在空气的流向上，导风过孔501在导流孔301之前，可选地，导风过孔501的孔径大于导流孔301，从而更有利于空气快速通过导风过孔501，提升进风量，而后才需通过导流孔301进行空气的分配调整、均匀排布。
请结合参照图1、图2及图5所示，燃烧器20设有第一燃气进口202和第二燃气进口203，壳体10还开设有与燃烧室101连通的第一安装过孔104和第二安装过孔105，第一燃气进口202与第一安装过孔104连通，第二燃气进口203与第二安装过孔105连通。
本申请中第一燃气进口202和第二燃气进口203分别用于浓燃气和淡燃气的输入，并通过第一安装孔104和第二安装孔105方便于燃气管路的安装和通过。
本申请还提出一种燃气热水器，该燃气热水器包括风机40和燃烧室结构100，该燃烧室结构100的具体结构参照上述实施例，由于本燃气热水器采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有效果，在此不再一一赘述。风机40抽动空气，以使空气从所述进风孔103进入所述导流腔1012后，分为成两路，一路依次通过导流孔301、燃烧腔1011后，由所述开口102排出，另一路经过隔热间隙1014后，由所述隔热孔303排出。可选地，风机40邻近开口102设置。当然，风机40可采用多种类型的风机，譬如离心风机、贯流风机或轴流风机等等，只需要风机40能够抽动空气，将燃烧室101内的空气从开口102抽出，能够为强抽型燃烧室创造空气流动条件的目的即可，具体应用中可根据实际情形进行风机40种类的选定。本申请燃气热水器中，通过设置强抽型的燃烧室结构100，降低了燃烧室101的密封性要求，从而燃烧室101可设置为未全密封，减少了震动啸叫的风险，满足于燃气热水器降低噪音的用户需求。
以上所述仅为本申请的可选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (11)

  1. 一种燃烧室结构，其中，包括：
    壳体，所述壳体内设有燃烧室、和与该燃烧室连通的开口和进风孔；
    燃烧器，所述燃烧器容置于燃烧室内，所述燃烧器设有燃烧火口；及
    排气支架，所述排气支架连接于所述燃烧器和所述燃烧室内壁之间，所述排气支架将所述燃烧室分隔为与所述开口连通的燃烧腔和与所述进风孔连通的导流腔，所述燃烧火口位于所述燃烧腔内，
    所述排气支架和所述燃烧室的内壁之间还形成有与所述导流腔连通的隔热间隙，所述排气支架间隔开设有多个导流孔和多个隔热孔，所述导流孔连通所述燃烧腔和所述导流腔，且所述导流孔邻近于所述燃烧火口设置，所述隔热孔与所述隔热间隙连通，且所述隔热孔位于所述开口的周缘。
  2. 如权利要求1所述的燃烧室结构，其中，所述排气支架开设有一通孔，所述燃烧器收容于所述通孔内，所述排气支架由其外边缘至通孔的孔壁边缘依次弯折形成安装部、隔热部及导流部，所述安装部连接于所述开口的周缘，所述隔热部和所述燃烧室的内壁之间形成所述隔热间隙，所述导流部与所述燃烧器的外部连接，所述导流部开设有所述导流孔，所述安装部和/或所述隔热部形成有所述隔热孔。
  3. 如权利要求2所述的燃烧室结构，其中，所述安装部与所述隔热部的连接处设有所述隔热孔。
  4. 如权利要求2所述的燃烧室结构，其中，所述隔热部位于所述隔热间隙内的表面凸设有安装凸起，所述安装凸起抵接于所述燃烧室的内壁。
  5. 如权利要求2所述的燃烧室结构，其中，所述燃烧器的相对两侧均延伸凸设有多个凸块，所述导流部远离所述隔热部的端部延伸形成卡接部，所述卡接部开设有多个卡槽，所述凸块插接于所述卡槽。
  6. 如权利要求5所述的燃烧室结构，其中，所述排气支架包括相对设置的第一支架和第二支架、相对设置的第三支架和第四支架，所述第一支架、第三支架、第二支架及第四支架依次围合于所述排布于所述燃烧器的四周，所述第一支架和所述第二支架均形成有所述卡槽。
  7. 如权利要求6所述的燃烧室结构，其中，所述第一支架和所述第三支架为一体成型结构，所述第二支架和所述第四支架为一体成型结构；或者，
    所述第一支架、所述第二支架、所述第三支架及所述第四支架为一体成型结构。
  8. 如权利要求1所述的燃烧室结构，其中，所述燃烧室结构还包括固定支架，所述固定支架连接于所述燃烧室的内壁和所述燃烧器的外部之间，且所述固定支架位于所述排气支架和所述进风孔之间。
  9. 如权利要求8所述的燃烧室结构，其中，所述固定支架开设有导风过孔，所述导风过孔的两端分别连通所述进风孔和所述导流孔。
  10. 如权利要求1至9中任一项所述的燃烧室结构，其中，所述燃烧器设有第一燃气进口和第二燃气进口，所述壳体还开设有与所述燃烧室连通的第一安装过孔和第二安装过孔，所述第一燃气进口与所述第一安装过孔连通，所述第二燃气进口与所述第二安装过孔连通。
  11. 一种燃气热水器，其中，包括风机和燃烧室结构，所述燃烧室结构包括壳体、燃烧器及排气支架，所述壳体内设有燃烧室、和与该燃烧室连通的开口和进风孔；所述燃烧器容置于燃烧室内，所述燃烧器设有燃烧火口；所述排气支架连接于所述燃烧器和所述燃烧室内壁之间，所述排气支架将所述燃烧室分隔为与所述开口连通的燃烧腔和与所述进风孔连通的导流腔，所述燃烧火口位于所述燃烧腔内；所述排气支架和所述燃烧室的内壁之间还形成有与所述导流腔连通的隔热间隙，所述排气支架间隔开设有多个导流孔和多个隔热孔，所述导流孔连通所述燃烧腔和所述导流腔，且所述导流孔邻近于所述燃烧火口设置，所述隔热孔与所述隔热间隙连通，且所述隔热孔位于所述开口的周缘；
    所述风机邻近所述开口设置，且所述风机抽动空气，以使空气从所述进风孔进入所述导流腔后，分为成两路，一路依次通过导流孔、燃烧腔后，由所述开口排出，另一路经过隔热间隙后，由所述隔热孔排出。
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