CN211695436U

CN211695436U - Combustion chamber and gas appliance

Info

Publication number: CN211695436U
Application number: CN201921868386.2U
Authority: CN
Inventors: 薛超雄; 勾健; 徐国平; 梁国荣
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-10-16
Anticipated expiration: 2029-10-31

Abstract

The utility model 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 out the burning chamber, first bounding wall with the second bounding wall interval set up construct out with at least one wind channel of burning chamber intercommunication, first bounding wall with the second bounding wall constructs out the tube seat that extends along the horizontal direction jointly. According to the utility model discloses combustion chamber establishes the tube seat that extends along the horizontal direction through constructing, improves the heat exchange efficiency of the water pipe of flue gas and heat exchanger to through the wind channel to the cooling of first bounding wall, avoid the heat to transmit externally, can improve the thermal efficiency to combustor supply secondary air again.

Description

Combustion chamber and gas appliance

Technical Field

The utility model relates to a water heater technical field, more specifically relates 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.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem to a certain extent at least.

Therefore, the utility model provides a combustion chamber, the heat exchange efficiency of this combustion chamber is high.

The utility model discloses still provide a gas equipment, this gas equipment's heat exchange efficiency is high.

According to utility model's 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 out the burning chamber, first bounding wall with the second bounding wall interval set up construct out with at least one wind channel of burning chamber intercommunication, first bounding wall with the second bounding wall constructs out the tube seat that extends along the horizontal direction jointly.

According to the utility model discloses a combustion chamber establishes the tube seat that extends along the horizontal direction through constructing, improves the heat exchange efficiency of the water pipe of flue gas and heat exchanger to through the cooling of wind channel to first bounding wall, improved spare part life, avoid the heat to external transmission, can be to combustor supply secondary air again, improved the thermal efficiency.

In addition, according to the utility model discloses combustion chamber, can also have following additional technical characterstic:

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 optional example, the air inlet hole of the air duct is formed in the first enclosing plate, the air outlet hole of the air duct is formed in the second enclosing plate, and the air inlet hole is arranged above the air outlet hole in the height direction.

In an alternative example, the air duct includes at least a first layer air duct and a second layer air duct.

In an optional example, the air inlet holes of the first layer of air duct and the second layer of air duct are both located above the air outlet holes or the air inlet holes of the first layer of air duct are located above the air outlet holes, and the air inlet holes of the second layer of air duct are located below the air outlet holes.

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 a further alternative example, 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 utility model discloses gas equipment includes the combustion chamber of above-mentioned embodiment, because according to the utility model discloses the combustion chamber effectively avoids the heat to transmit to the outside, has prolonged the life of spare part, and has improved heat exchange efficiency through the tube seat, consequently, according to the utility model discloses gas equipment long service life and heat exchange efficiency are high.

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 present invention;

fig. 2 is a cross-sectional view of a combustion chamber according to some embodiments of the present invention;

fig. 3 is a cross-sectional view of a combustion chamber according to an 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 structural view of a gas appliance 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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-6, a combustion chamber 100 according to an embodiment of the present invention is described, the combustion chamber 100 is connected to a heat exchanger 200 and a burner 300 respectively, wherein a portion of the heat exchanger 200 and the burner 300 can be embedded in the combustion chamber 100, or both can be located outside the combustion chamber 100, or one can be located inside the combustion chamber 100 and the other can 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 an air duct 30 communicated with the combustion chamber 21, and cold air in the air duct 30 takes away at least a part of heat of the first enclosing plate 10. That is, the air in the air duct 30 is in a flowing state, and the external cold air can continuously enter the air duct 30, so that the heat of the first enclosing plate 10 is continuously taken away and flows into the combustion chamber 21, thereby realizing the secondary air supply to the burner 300.

The utility model discloses combustion chamber 100 will be to the air duct 30 transport air that flows, has realized the cooling to first bounding wall 10 on the one hand, has reduced the heat and has outwards diffused, has avoided the harm of 1000 spare parts of gas equipment, and on the other hand has also improved the thermal efficiency.

Wherein, the first enclosing plate 10 and the second enclosing plate 20 jointly form a pipe groove 40 extending along the horizontal direction (the left-right direction in fig. 1). 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.

It is worth mentioning, the utility model discloses first bounding wall 10 and the at least one of second bounding wall 20 of combustion chamber 100 are the steel sheet, compare in current combustion chamber use anaerobic copper or thermal insulation material, the plasticity of steel sheet is strong for connection process between first bounding wall 10 and the second bounding wall 20 is comparatively simple, for example, under first bounding wall 10 and the second bounding wall 20 were the steel sheet the condition, can adopt local welding mode to connect first bounding wall 10 and second bounding wall 20, wind channel 30 structure can be bent through first bounding wall 10 or second bounding wall 20 and form, the configuration is easy.

It should be noted that the air duct 30 formed by the first enclosure 10 and the second enclosure 20 may be one or more distributed along the circumferential direction and/or one or more distributed along the height direction of the combustion chamber. Each of the air ducts 30 may have separate air inlet openings 11 and air outlet openings 22, or a plurality of air ducts 30 may share one air inlet opening 11 and flow out through the respective air outlet openings 22. The plurality of air ducts 30 may or may not be in communication with each other.

In short, according to the utility model discloses according to combustion chamber 100, through constructing the tube seat 40 of establishing along the horizontal direction extension, improve the heat exchange efficiency of flue gas and the water pipe of heat exchanger 200 to through the cooling of wind channel 30 to first bounding wall 10, avoid the heat to transmit to the outside, can supply secondary air to combustor 300 again, improved the thermal efficiency.

In some embodiments of the present invention, 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. Under this condition, the utility model discloses a combustion chamber 100 is applied to strong type gas equipment of taking out, and strong type gas equipment of taking out is equipped with combustor 300, combustion chamber 100, heat exchanger 200 and fan 400 from bottom to top in proper order, and under the suction of fan 400, the formation negative pressure in the combustion chamber 21 for in the outside air is inhaled wind channel 30, the realization is to the cooling effect of first bounding wall 10.

In an alternative embodiment, as shown in fig. 1 and 5, the air inlet holes 11 and the air outlet holes 22 are staggered in the height direction. For example, air enters the air chute 30 from one direction of the first enclosure 10 and exits the air chute 30 from the other direction of the second enclosure 20. Therefore, air cannot directly pass through the air duct 30 from the same direction, and air flow can flow in the height direction, so that cooling of 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.

Alternatively, the air inlet holes 11 of the air duct 30 are formed on the first enclosure 10, the air outlet holes 22 of the air duct 30 are formed on the second enclosure 20, and the air inlet holes 11 are disposed above the air outlet holes 22 in the height direction. Therefore, the air flow in the air duct 30 can be fed into the combustion chamber 21 from top to bottom, and the secondary air is supplemented to the direction of the burner 200, so as to ensure sufficient combustion.

In some embodiments of the present invention, the air duct 30 includes at least a first layer of air duct 30 and a second layer of air duct 30. That is, the combustion chamber 100 includes two or more air ducts 30 in the height direction, and thus the first enclosing plate 10 can be cooled by segments by providing the multiple air ducts 30, and the cooling effect is improved.

Optionally, the air inlet holes 11 of the first layer of air duct 30 and the second layer of air duct 30 are both located above the air outlet hole 22. That is, the air flows in the two air ducts 30 flow in the same direction, so that the air flows can flow toward the burner 200 quickly, and sufficient air is ensured for the combustion reaction.

For reaching the cooling effect of preferred, can supply sufficient secondary air again to burning chamber 21, as shown in fig. 2, the utility model discloses the air current flow direction adopts the convection current mode in first layer wind channel 30 and the second floor wind channel of embodiment, specifically, in the direction of height, the fresh air inlet 11 of first layer wind channel 30 is located the top of exhaust vent 22, and the fresh air inlet 11 of second floor wind channel 30 is located the below of exhaust vent 22.

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 an alternative embodiment, as shown in fig. 1 and 5, the first shroud 10 comprises: the first rear side plate 12, a first left side plate 13 connected to the left edge of the first rear side plate 12, a first right side plate 14 connected to the right edge of the first rear side plate 12, and a first front side plate 15 connected to the front edges of the first left side plate 13 and the first right side plate 14, respectively, wherein the first rear side plate 12, the first left side plate 13, and the first right side plate 14 are integrally formed; correspondingly, the second shroud 20 comprises: the second rear side plate 23, a second left side plate 24 connected to the left edge of the second rear side plate 23, a second right side plate connected to the right edge of the second rear side plate 23, and a second front side plate 25 connected to the front edges of the second left side plate 24 and the second right side plate, respectively, wherein the second rear side plate 23, the second left side plate 24, and the second right side plate are integrally formed.

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. The whole structure of the combustion chamber is simple in shape 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 present invention, the wall of the outlet opening 22 of the second panel 20 forms a wind deflector 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.

According to the utility model discloses gas equipment 1000 includes the combustion chamber 100 of above-mentioned embodiment, because according to the utility model discloses combustion chamber 100 simple structure easily produces the manufacturing, and effectively avoids the heat to transmit to the outside, has prolonged the life of spare part, and has improved combustion efficiency, consequently, according to the utility model discloses gas equipment 1000's simple structure, low in production cost, long service life and thermal efficiency are high.

In the description of the present invention, it is to be understood that the terms "bottom", "top", "inside", "outside", "upper", "lower", and the like refer to the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

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 the second bounding wall interval set up construct out with at least one wind channel of burning chamber intercommunication, first bounding wall with the second bounding wall constructs out the tube seat that extends along the horizontal direction jointly, wherein, the wind channel has fresh air inlet and 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 according to claim 1, wherein said air inlet holes are formed on said first enclosure, said air outlet holes are formed on said second enclosure, and said air inlet holes are disposed above said air outlet holes in a height direction.

5. The combustor of claim 1, wherein said air ducts comprise at least a first layer of air ducts and a second layer of air ducts.

6. The combustor of claim 5, wherein the air inlet holes of the first layer of air duct and the second layer of air duct are both located above the air outlet holes or the air inlet holes of the first layer of air duct are located above the air outlet holes, and the air inlet holes of the second layer of air duct are located below the air outlet holes.

7. The combustor according to any one of claims 1-6, wherein 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.

8. The combustor of claim 7, wherein 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.

9. The combustor of claim 8, 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.

10. The combustion chamber as claimed in claim 9, 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.

11. The combustor of claim 9, wherein a portion of said air inlet openings are disposed adjacent said bent plate.

12. The combustor of claim 1, wherein said air intake openings are elongated.

13. The combustor according to claim 1, wherein the wall of said second shroud outlet forms a baffle extending towards the inner wall of said first shroud.

14. A gas-fired appliance, characterized in that it comprises a combustion chamber according to any one of claims 1 to 13.