CN112747472A - Combustion chamber and gas appliance - Google Patents
Combustion chamber and gas appliance Download PDFInfo
- Publication number
- CN112747472A CN112747472A CN201911056280.7A CN201911056280A CN112747472A CN 112747472 A CN112747472 A CN 112747472A CN 201911056280 A CN201911056280 A CN 201911056280A CN 112747472 A CN112747472 A CN 112747472A
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- CN
- China
- Prior art keywords
- side plate
- plate
- wind channel
- combustion chamber
- bounding wall
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- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
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- 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
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- 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
Abstract
The invention discloses a combustion chamber and gas equipment, the combustion chamber includes: the first bounding wall that is located the outside and the second bounding wall that is located the inboard, the second bounding wall constructs a burning chamber, first bounding wall and second bounding wall interval set up construct out with burning chamber intercommunication at least first layer wind channel and second floor wind channel, the fresh air inlet in first layer wind channel and second floor wind channel is formed on first bounding wall, the exhaust vent in first layer wind channel and second floor wind channel forms on the second bounding wall, in the direction of height, the fresh air inlet in first layer wind channel is located the top of exhaust vent, the fresh air inlet in second floor wind channel is located the below of exhaust vent. According to the combustion chamber provided by the embodiment of the invention, the first enclosing plate and the second enclosing plate form at least two layers of air channels communicated with the combustion cavity, so that the first enclosing plate is cooled, heat is prevented from being transferred outwards, secondary air can be supplied to the combustor, and the heat efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a combustion chamber and gas equipment.
Background
In order to avoid the damage to the service life of other parts of the gas equipment caused by the outward transmission of high-temperature heat energy, the conventional combustion chamber generally comprises two types, namely a combustion chamber surrounded by oxygen-free copper, and a water pipe coiled on the outer wall surface of the oxygen-free copper for cooling so as to prolong the service life of the parts. The method has the disadvantages of high process requirement of coil pipe welding, high manufacturing difficulty and high manufacturing cost because a large amount of oxygen-free copper materials are used. Meanwhile, the wall surface of the combustion chamber with the coil pipe is easy to produce condensed water at low temperature in winter, and the service life of the heat exchanger can be influenced. The other is that the inner wall of the combustion chamber is provided with a heat insulation material, the cost of the heat insulation material is high, and the heat insulation effect is poor under the condition that the thickness and the sealing performance of the heat insulation material are insufficient.
Based on the above, it is necessary to optimize the structure of the combustion chamber, and design a structure with low cost, simple process and good heat insulation effect.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems to a certain extent.
Therefore, the invention provides a combustion chamber, and the manufacturing process of the combustion chamber is simple and the manufacturing cost is low.
The invention also provides a gas device which is simple in structure, low in production cost, long in service life and high in heat efficiency.
The combustion chamber according to an embodiment of the invention comprises: the first bounding wall that is located the outside and the second bounding wall that is located the inboard, the second bounding wall constructs out the burning chamber, first bounding wall with second bounding wall interval set up construct out with at least first layer wind channel and the second floor wind channel of burning chamber intercommunication, first layer wind channel with the fresh air inlet in second floor wind channel is formed at on the first bounding wall, first layer wind channel with the exhaust vent in second floor wind channel form in on the second bounding wall, in the direction of height, the fresh air inlet in first layer wind channel is located the top of exhaust vent, the fresh air inlet in second floor wind channel is located the below of exhaust vent.
According to the combustion chamber provided by the embodiment of the invention, the first enclosing plate and the second enclosing plate form at least two layers of air channels communicated with the combustion cavity, so that the first enclosing plate is cooled, heat is prevented from being transferred outwards, secondary air can be supplied to the combustor, and the heat efficiency is improved.
In addition, the combustion chamber according to the embodiment of the invention may also have the following additional technical features:
in some embodiments of the invention, at least one of the first and second enclosures is a steel plate.
In an optional embodiment, the air inlet holes and the air outlet holes are arranged in a staggered manner in the height direction.
In an alternative example, the first enclosing plate and the second enclosing plate jointly form a pipe groove extending along the horizontal direction.
In an alternative embodiment, the first shroud comprises: the first rear side plate, the first left side plate connected to the left edge of the first rear side plate, the first right side plate connected to the right edge of the first rear side plate, and the first front side plate respectively connected to the front edges of the first left side plate and the first right side plate, wherein the first rear side plate, the first left side plate and the first right side plate are integrally formed.
In an alternative embodiment, the second shroud comprises: the second rear side plate, the second left side plate connected to the left edge of the second rear side plate, the second right side plate connected to the right edge of the second rear side plate, and the second front side plate respectively connected to the front edges of the second left side plate and the second right side plate, wherein the second rear side plate, the second left side plate, and the second right side plate are integrally formed.
In an alternative example, the upper end of the second front side plate forms a bent plate, and the bent plate is at least partially attached to the inner side wall of the first front side plate, so as to close the upper side of the air duct.
In a further alternative example, the upper side of the bending plate and the first front side plate form an insulating air chamber, and the insulating air chamber is not communicated with the combustion chamber.
In a further alternative, a portion of the air inlet openings are disposed adjacent the bent plate.
In an optional embodiment, the air inlet hole is long-strip-shaped.
In an alternative example, the hole wall of the air outlet of the second enclosing plate forms a wind deflector extending towards the inner wall of the first enclosing plate.
According to the embodiment of the invention, the gas equipment comprises the combustion chamber, and the combustion chamber effectively avoids heat transfer to the outside, prolongs the service life of parts and improves the combustion efficiency, so that the gas equipment has long service life and high heat efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an exploded view of a combustion chamber according to some embodiments of the invention;
FIG. 2 is a cross-sectional view of a combustion chamber according to some embodiments of the invention;
FIG. 3 is a cross-sectional view of a combustion chamber according to one embodiment of the present invention;
FIG. 4 is a cross-sectional view of a combustion chamber according to another embodiment of the present invention;
FIG. 5 is a perspective view of a combustion chamber according to some embodiments of the present invention;
FIG. 6 is a schematic diagram of a gas fired device according to some embodiments of the present invention.
Reference numerals:
a gas-fired facility 1000;
a combustion chamber 100;
a first shroud 10; an air inlet hole 11; a first rear side panel 12; a first left side plate 13; a first right side plate 14; a first front side plate 15;
a second shroud 20; a combustion chamber 21; an air outlet 22; a second rear side plate 23; a second left side panel 24; a second front side plate 25; a wind deflector 26; a bending plate 27;
an air duct 30;
a pipe groove 40;
a heat insulating air chamber 50;
a heat exchanger 200;
a burner 300;
a fan 400.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1-6, a combustion chamber 100 according to an embodiment of the present invention is described, the combustion chamber 100 being connected to a heat exchanger 200 and a burner 300, respectively, wherein a portion of the heat exchanger 200 and the burner 300 may be embedded within the combustion chamber 100, or both may be located outside the combustion chamber 100, or one may be located inside the combustion chamber 100 and the other may be located outside the combustion chamber 100.
Specifically, the combustion chamber 100 includes a first shroud 10 on the outside and a second shroud 20 on the inside. The second enclosure 20 defines a combustion chamber 21, i.e. the combustion flame of the burner 300 and the generated high-temperature flue gas are enclosed in the combustion chamber 21.
The outer side of the first enclosing plate 10 is provided with a second enclosing plate 20, and the second enclosing plate 20 can be at least partially arranged around the outer side of the first enclosing plate 10. For example, the second enclosure 20 is enclosed on at least one of the left side, the right side, the front side and the rear side of the first enclosure 10, preferably, the second enclosure 20 is enclosed on the left side, the right side and the front side and the rear side of the first enclosure 10, and more preferably, the second enclosure 20 and the first enclosure 10 have substantially the same extension height in the vertical direction (e.g., the vertical direction in the drawing), so that the first enclosure 10 blocking heat from being transferred to the outside can be provided on the outer side of the second enclosure 20, thereby reducing heat from being sent out from the combustion chamber 100 to the outside and avoiding damage to the components of the gas appliance 1000 due to high temperature.
The first enclosing plate 10 and the second enclosing plate 20 are arranged at intervals to form at least a first air duct 30 and a second air duct 30 which are communicated with the combustion cavity 21, air inlet holes 11 of the first air duct 30 and the second air duct 30 are formed on the first enclosing plate 10, and air outlet holes 22 of the first air duct 30 and the second air duct 30 are formed on the second enclosing plate 20. That is, under the drive of wind pressure, the air current inhales from the outside to the inside, prevents on the one hand that the heat in combustion chamber 21 outwards spreads, and on the other hand takes away the heat of first bounding wall 10, avoids its temperature rise too high.
In other words, the air in the air duct 30 is in a flowing state, and the external cold air can continuously enter the second layer of air duct of the first air duct 30, so that the heat of the first enclosure 10 is continuously taken away, and flows into the combustion chamber 21, thereby realizing the secondary air supply to the burner 300. The combustion chamber 100 of the embodiment of the present invention conveys the flowing air to the air duct 30, so that on one hand, the first enclosing plate 10 is cooled, the heat is reduced from being diffused to the outside, the damage of the parts of the gas equipment 1000 is avoided, and on the other hand, the thermal efficiency is also improved.
It should be noted that the "first layer" and the "second layer" are at least two layers of air ducts 30 distributed in the height direction of the combustion chamber 100, i.e. in the height direction of the combustion chamber 100. Each layer of air duct 30 may be one chamber or a plurality of chambers independently distributed along the circumferential direction, and adjacent chambers may or may not be communicated. The chamber configurations and numbers of the air ducts 20 of adjacent layers may be the same or different.
As shown in fig. 2-4, the air inlet holes 11 of the air duct 30 are formed on the first enclosure 10, and the air outlet holes 22 of the air duct 30 are formed on the second enclosure 20. That is, the cool air enters the air duct 30 through the first enclosing plate 10, and after passing through the air duct 30, flows out from the air outlet 22 and enters the combustion chamber 21. In this case, the combustion chamber 100 of the present invention is applied to a forced-induction type gas appliance, the forced-induction type gas appliance is sequentially provided with the burner 300, the combustion chamber 100, the heat exchanger 200 and the fan 400 from bottom to top, and negative pressure is formed in the combustion chamber 21 under the suction of the fan 400, so that the outside air is sucked into the air duct 30, and the cooling effect on the first enclosing plate 10 is achieved.
In order to achieve a better cooling effect and supply enough secondary air to the combustion chamber 21, as shown in fig. 2, the airflow flowing directions in the first layer of air duct 30 and the second layer of air duct of the embodiment of the present invention adopt a convection mode, specifically, in the height direction, the air inlet holes 11 of the first layer of air duct 30 are located above the air outlet holes 22, and the air inlet holes 11 of the second layer of air duct 30 are located below the air outlet holes 22.
In short, according to the combustion chamber 100 of the embodiment of the present invention, the first enclosure 10 and the second enclosure 20 form at least two layers of air ducts 30 communicated with the combustion chamber 21, so that the first enclosure 10 is cooled, heat is prevented from being transferred to the outside, secondary air can be supplied to the combustor 300, and thermal efficiency is improved.
It should be noted that at least one of the first enclosing plate 10 and the second enclosing plate 20 of the combustion chamber 100 of the present invention is a steel plate, compared with the existing combustion chamber using oxygen-free copper or heat insulating material, the plasticity of the steel plate is strong, the connection process between the first enclosing plate 10 and the second enclosing plate 20 is simpler, for example, when the first enclosing plate 10 and the second enclosing plate 20 are both made of steel plates, the first enclosing plate 10 and the second enclosing plate 20 are formed into a whole by adopting a local welding mode, the air duct 30 structure can be formed by bending the first enclosing plate 10 or the second enclosing plate 20, and the configuration is easy. Namely, the first enclosing plate 10 and the second enclosing plate 20 are made of steel, so that the production process is simplified, and the production cost is reduced
In an alternative embodiment, as shown in fig. 1 and 5, the air inlet holes 11 and the air outlet holes 22 of the air duct 30 are arranged in a staggered manner in the height direction. That is, air enters the air duct 30 from one direction of the first enclosure 10 and exits the air duct 30 from the other direction of the second enclosure 20. Therefore, air does not directly pass through the air duct 30 from the same height direction, and air flow can flow in the height direction, so that the cooling of the areas with different heights of the first enclosing plate 10 is realized. The number of the air inlet holes 11 of each air inlet duct 30 may be one or more, and preferably, the air inlet holes 11 are distributed in the circumferential direction of the first enclosing plate 10, so that the air inlet surface in the circumferential direction of the first enclosing plate 10 can be increased, and the first enclosing plate 10 is ensured to be fully cooled.
Advantageously, as shown in fig. 1 and 5, the air inlet openings 11 are elongated. Therefore, the distribution length of the air inlet holes 11 can be prolonged as much as possible, so that the circumferential air inlet surface of the first enclosing plate 10 is further increased, and the first enclosing plate 10 is ensured to be fully cooled.
In a further alternative, as shown in FIG. 2, the air flow within the air chute 30 is from the top down. Thus, the air flow in the air duct 30 is delivered to the lower side of the combustion chamber 21. This makes it possible to supply sufficient secondary air to the combustor 300 of the gas plant 1000, thereby improving the combustion efficiency.
In some embodiments of the present invention, the first shroud 10 and the second shroud 20 together define a tube slot 40 extending in the left-right direction. A portion of the water pipes of the heat exchanger 200 may pass through the pipe slot 40, that is, a portion of the water pipes are disposed in the combustion chamber 21 and directly heated in the combustion chamber 21, thereby improving the heat exchange efficiency between the flue gas and the water pipes.
In an alternative embodiment, as shown in fig. 1 and 5, the first enclosing plate 10 comprises a first back side plate 12, a first left side plate 13, a first right side plate 14 and a first front side plate 15 which are connected with each other in the circumferential direction, wherein the first back side plate 12, the first left side plate 13 and the first right side plate 14 are integrally formed. Correspondingly, the second shroud 20 includes a second rear side plate 23, a second left side plate 24, a second right side plate, and a second front side plate 25 that are connected to each other in the circumferential direction, wherein the second rear side plate 23, the second left side plate 24, and the second right side plate are integrally formed.
Specifically, the first left side plate 13 is connected to the left edge of the first rear side plate 12, the first right side plate 14 is connected to the right edge of the first rear side plate 12, and the first front side plate 15 is connected to the front edges of the first left side plate 13 and the first right side plate 14, respectively. Correspondingly, the second left side plate 24 is connected to the left edge of the second rear side plate 23, the second right side plate is connected to the right edge of the second rear side plate 23, and the second front side plate 25 is connected to the front edges of the second left side plate 24 and the second right side plate, respectively.
That is, the first rear side plate 12, the first left side plate 13 and the first right side plate 14 are integrally formed into a U-shaped structure, the first front side plate 15 is used to close the U-shaped opening, the second rear side plate 23, the second left side plate 24 and the second right side plate are integrally formed into a U-shaped structure, and the second front side plate 25 is used to close the U-shaped opening. In other words, the first enclosing plate 10 and the second enclosing plate 20 are both frame bodies which are open towards the front side, for example, they can be formed by bending one plate for multiple times, and can be connected with each other by welding to form a whole, and the whole structure of the combustion chamber is simple in modeling and easy to produce and manufacture.
In an alternative example, as shown in fig. 1 and 2, a bent plate 27 is formed at the upper end of the second front side plate 25, and the bent plate 27 at least partially adheres to the inner side wall of the first front side plate 15, thereby closing the upper side of the air duct 30. That is, the bent plate 27 restricts the upward flow of air so that the air can flow downward into the combustion chamber 21, and supplies secondary air to the burner 300.
In an alternative example, as shown in fig. 5, the upper side of the bent plate 27 and the first front side plate 15 form an insulating air chamber 50, and the insulating air chamber 50 is not communicated with the combustion chamber 21. It can be understood that, because the bending plate 27 is partially attached to the inner wall of the first front side plate 15, the temperature of the first front side plate 15 is higher at the attachment of the bending plate 27 and the first front side plate 15, and the heat insulation air chamber 50 can block heat from transferring to the first front side plate 15 and can reduce the temperature at the attachment to some extent.
In a further alternative, a portion of the air inlet openings 11 are disposed adjacent to the bent plate 27. That is, the cold air enters the air duct 30 from the side close to the bending plate 27, which is beneficial to continuously taking away the temperature of the joint of the bending plate 27 and the first front side plate 15, and avoiding the over-high temperature of the joint.
In other embodiments of the invention the walls of the outlet openings 22 of the second panel 20 form wind deflectors 26 extending towards the inner wall of the first panel 10. The wind deflector 26 may direct the wind as far as possible to the inner wall of the first shroud 10 so that the air flow may flow snugly over the inner wall of the first shroud 10, thereby allowing the air to sufficiently absorb the heat of the first shroud 10.
The gas appliance 1000 according to the embodiment of the present invention includes the combustion chamber 100 of the above-mentioned embodiment, and since the combustion chamber 100 according to the embodiment of the present invention has a simple structure, is easy to manufacture, and effectively prevents heat from being transferred to the outside, prolongs the service life of parts, and improves combustion efficiency, the gas appliance 1000 according to the embodiment of the present invention has a simple structure, a low production cost, a long service life, and a high thermal efficiency.
In the description of the present invention, it is to be understood that the terms "bottom", "top", "inside", "outside", "upper", "lower", "left", "right", "front", "rear", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being 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 invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (12)
1. A combustor, comprising: the first bounding wall that is located the outside and the second bounding wall that is located the inboard, the second bounding wall constructs out the burning chamber, first bounding wall with second bounding wall interval set up construct out with at least first layer wind channel and the second floor wind channel of burning chamber intercommunication, first layer wind channel with the fresh air inlet in second floor wind channel is formed at on the first bounding wall, first layer wind channel with the exhaust vent in second floor wind channel form in on the second bounding wall, in the direction of height, the fresh air inlet in first layer wind channel is located the top of exhaust vent, the fresh air inlet in second floor wind channel is located the below of exhaust vent.
2. The combustor of claim 1, wherein at least one of said first shroud and said second shroud is a steel plate.
3. The combustor of claim 1, wherein said air inlet openings and said air outlet openings are staggered in height.
4. The combustor of claim 1, wherein said first shroud and said second shroud cooperate to define a duct extending in a horizontal direction.
5. The combustor according to any one of claims 1-4, wherein the first enclosing plate comprises a first rear side plate, a first left side plate, a first right side plate and a first front side plate which are connected with each other in a circumferential direction, wherein the first rear side plate, the first left side plate and the first right side plate are integrally formed.
6. The combustor of claim 5, wherein the second shroud comprises a second back side plate, a second left side plate, a second right side plate, and a second front side plate interconnected in a circumferential direction, wherein the second back side plate, the second left side plate, and the second right side plate are integrally formed.
7. The combustor of claim 6, wherein the upper end of said second front plate forms a bent plate, said bent plate at least partially attached to the inner sidewall of said first front plate, thereby closing the upper side of said air duct.
8. The combustion chamber as claimed in claim 7, wherein the upper side of the bent plate and the first front plate form an insulating air chamber, and the insulating air chamber is not communicated with the combustion chamber.
9. The combustor of claim 7, wherein a portion of said air inlet openings are disposed adjacent said bent plate.
10. The combustor of claim 1, wherein said air intake openings are elongated.
11. The combustor according to claim 2, wherein the wall of said second shroud outlet forms a baffle extending towards the inner wall of said first shroud.
12. A gas-fired appliance, characterized in that it comprises a combustion chamber according to any one of claims 1 to 11.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911056280.7A CN112747472A (en) | 2019-10-31 | 2019-10-31 | Combustion chamber and gas appliance |
| JP2022525274A JP2023501216A (en) | 2019-10-31 | 2020-10-23 | Combustion chamber and gas system |
| US17/772,501 US20220373178A1 (en) | 2019-10-31 | 2020-10-23 | Combustion chamber and gas apparatus |
| PCT/CN2020/123267 WO2021083047A1 (en) | 2019-10-31 | 2020-10-23 | Combustion chamber and gas apparatus |
| EP20880731.3A EP4043812A4 (en) | 2019-10-31 | 2020-10-23 | Combustion chamber and gas apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911056280.7A CN112747472A (en) | 2019-10-31 | 2019-10-31 | Combustion chamber and gas appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112747472A true CN112747472A (en) | 2021-05-04 |
Family
ID=75644888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911056280.7A Pending CN112747472A (en) | 2019-10-31 | 2019-10-31 | Combustion chamber and gas appliance |
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| Country | Link |
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| CN (1) | CN112747472A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950648A (en) * | 2004-05-11 | 2007-04-18 | 株式会社能率 | Heat exchanger and water heating device |
| EP2618062A2 (en) * | 2012-01-23 | 2013-07-24 | Alois Wegscheider | Small fireplace |
| CN106765324A (en) * | 2017-01-05 | 2017-05-31 | 湖北新农佳科技有限公司 | Air jacket formula cooking stove thorax |
| CN110296536A (en) * | 2019-07-04 | 2019-10-01 | 广东省众骋热能科技有限公司 | A kind of combustion heat-exchange device with Multi-stage cooling structure |
-
2019
- 2019-10-31 CN CN201911056280.7A patent/CN112747472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950648A (en) * | 2004-05-11 | 2007-04-18 | 株式会社能率 | Heat exchanger and water heating device |
| EP2618062A2 (en) * | 2012-01-23 | 2013-07-24 | Alois Wegscheider | Small fireplace |
| CN106765324A (en) * | 2017-01-05 | 2017-05-31 | 湖北新农佳科技有限公司 | Air jacket formula cooking stove thorax |
| CN110296536A (en) * | 2019-07-04 | 2019-10-01 | 广东省众骋热能科技有限公司 | A kind of combustion heat-exchange device with Multi-stage cooling structure |
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