CN207584769U - Burner and wall-hung boiler - Google Patents
Burner and wall-hung boiler Download PDFInfo
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- CN207584769U CN207584769U CN201721584758.XU CN201721584758U CN207584769U CN 207584769 U CN207584769 U CN 207584769U CN 201721584758 U CN201721584758 U CN 201721584758U CN 207584769 U CN207584769 U CN 207584769U
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- burner
- flow reduction
- speed structure
- flow
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Abstract
The utility model is related to a kind of burner and wall-hung boilers, wherein burner includes burner (1) and the air-flow reduction of speed structure (2) with multiple through-holes (20), and the air-flow reduction of speed structure (2) can slow down to the air for the flame zone (11) for flowing to the burner (1).The utility model passes through air-flow reduction of speed structure of the setting with multiple through-holes, there can be certain barrier effect to air-flow, reduce the flow velocity for the air for flowing to flame zone, air is avoided to flow the influence to flame, prevent flame from being blown partially, flame is enable to be directed at water route as much as possible, the heat that burning generates is enable more to pass to water route, improves thermal transition efficiency.
Description
Technical field
The utility model is related to field of combustion technology more particularly to a kind of burners and wall-hung boiler.
Background technology
At present, the application of wall-hung boiler is more and more extensive, and main thermal conversion processes is to generate heat by combustion of natural gas
Amount, then transfers heat to water route, then different rooms is transported to by water route, the air in room is heated.
In the prior art, the position of wall-hung boiler fuel combustion is in the upper surface of burner, in combustion, burner
Upper surface formed flame zone, and flame zone be negative pressuren zone, to surrounding air have draft effect, therefore under suction function around
Air can quickly be flowed to flame zone, and the quick flowing of air can blow flame deviation, can influence the transmission of heat in this way, make combustion
The heat that material burning generates cannot efficiently pass to water route, lead to the whole thermal efficiency of wall-hung boiler to reduce.
It should be noted that the information for being disclosed in the utility model background technology part is merely intended to increase to this practicality newly
The understanding of the general background of type, and be not construed as recognizing or imply that information composition has been art technology in any form
The prior art well known to personnel.
Utility model content
The purpose of this utility model is to propose a kind of burner and wall-hung boiler, to solve to fire in the prior art as much as possible
The problem of deviation, easily occurs for the combustion flame of burner.
To achieve the above object, the utility model provides a kind of burner, including burner and with multiple through-holes
Air-flow reduction of speed structure, air-flow reduction of speed structure can slow down to the air for the flame zone for flowing to burner.
Further, multiple through-holes are evenly arranged in air-flow reduction of speed structure, with the sky of the flame zone to flowing to burner
Gas realizes current balance function；Alternatively, multiple through-holes subregion in air-flow reduction of speed structure is set, the uniform cloth of through-hole in each region
It puts, current balance function is realized with the air of the flame zone to flowing to burner.
Further, air-flow reduction of speed structure is arranged along perpendicular to the direction of flame extension；Alternatively, air-flow reduction of speed structure edge is flat
Row is arranged in the direction that flame extends；Alternatively, air-flow reduction of speed structure is obliquely installed relative to the direction that flame extends.
Further, air-flow reduction of speed structure setting is in the lower section of flame zone and/or side.
Further, air-flow reduction of speed structure includes the bottom plate on the bottom surface of burner.
Further, air-flow reduction of speed structure includes avoiding structure, and avoiding structure is used to prevent air-flow reduction of speed structure and burning
Device is interfered.
Further, avoiding structure includes the avoidance notch for being arranged on the edge of air-flow reduction of speed structure.
Further, the quantity for avoiding notch is multiple, and multiple avoidance notches are relative to the center line of air-flow reduction of speed structure
It is symmetrical arranged.
Further, bottom plate includes homogenizing plate and avoids flanging, to be avoided to the protrusion for being set to burner base.
Further, air-flow reduction of speed structure setting is in the position for the jet-flow mouth that can avoid burner.
Further, air-flow reduction of speed structure includes installation folding, and air-flow reduction of speed structure is mounted on burning by installation folding
On the side of device, to avoid jet-flow mouth.
Further, the bottom plate on the bottom surface of burner includes homogenizing plate and avoids flanging, avoids flanging setting
Between homogenizing plate and installation folding.
Further, through-hole is circular hole, between the center of circle of a diameter of 2~4mm and/or two adjacent circular holes of circular hole away from
From for 4~6mm.
To achieve the above object, the utility model additionally provides a kind of wall-hung boiler, including above-mentioned burner.
Based on above-mentioned technical proposal, the utility model, can be right by air-flow reduction of speed structure of the setting with multiple through-holes
Air-flow has certain barrier effect, reduces the flow velocity for the air for flowing to flame zone, and air is avoided to flow the influence to flame, is prevented
Flame is blown partially, and flame is enable to be directed at water route as much as possible, and the heat that burning generates is enable more to pass to water route, is carried
High fever transformation efficiency.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application,
The illustrative embodiments and their description of the utility model are not formed for explaining the utility model to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the side view of the utility model burner one embodiment.
Fig. 2 is the air-flow flow schematic diagram of burner in Fig. 1 embodiments.
Fig. 3 is the bottom view of the utility model burner one embodiment.
Fig. 4 is the structure diagram of air-flow reduction of speed structure in the utility model burner one embodiment.
Fig. 5 is the rearview of air-flow reduction of speed structure in Fig. 4 embodiments.
Fig. 6 is the left view of air-flow reduction of speed structure in Fig. 4 embodiments.
Fig. 7 is the partial structural diagram of air-flow reduction of speed structure in Fig. 4 embodiments.
Fig. 8 is air-flow reduction of speed structure and the raised phase interworking on burner in the utility model burner one embodiment
The structure diagram of conjunction.
In figure：
1st, burner；2nd, air-flow reduction of speed structure；11st, flame zone；12nd, it is raised；
20th, through-hole；21st, homogenizing plate；22nd, flanging is avoided；23rd, installation folding；24th, the first notch；25th, the second notch；26、
Third notch；27th, mounting hole.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, the technical solution in embodiment is carried out clear, complete
Ground describes.Obviously, described embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.
Embodiment based on the utility model, the institute that those of ordinary skill in the art are obtained without making creative work
There is other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be appreciated that term " " center ", " transverse direction ", " longitudinal direction ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " on ", " under ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description rather than instruction
Or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to scope of protection of the utility model.
Flame deviation easily occurs in burning to solve the problems, such as burner of the prior art, the utility model proposes
A kind of structure improved burner.
As shown in Figure 1, in an illustrative examples of burner provided by the utility model, the burner
Including burner 1 and with multiple through-holes 20 air-flow reduction of speed structure 2, into burner 1 fuel combustion when generate flame zone
11, air-flow reduction of speed structure 2 can slow down to the air for flowing to flame zone 11.Wherein, the effective object of air-flow reduction of speed structure 2
It is the air for flowing to flame zone 11.
In above-mentioned illustrative examples, as shown in Fig. 2, by air-flow reduction of speed structure 2 of the setting with multiple through-holes 20,
There can be certain barrier effect to air-flow, reduce the flow velocity for the air for flowing to flame zone, avoid shadow of the air flowing to flame
It rings, prevents flame from being blown partially, flame is enable to be directed at water route as much as possible, the heat that burning generates is enable more to pass to
Thermal transition efficiency is improved in water route.
Wherein, multiple through-holes 20 set in air-flow reduction of speed structure 2 can be arranged according to certain rules, than
Such as, multiple through-holes 20 can be evenly arranged in air-flow reduction of speed structure 2, real with the air of the flame zone 11 to flowing to burner 1
Existing current balance function；Alternatively, multiple through-holes 20 subregion in air-flow reduction of speed structure 2 is set, the through-hole 20 in each region is uniform
Arrangement realizes current balance function with the air of the flame zone 11 to flowing to burner 1.By the way that multiple through-holes 20 are set as uniform cloth
It puts, air can be dredged, effect is flowed in realization, makes the air for flowing to flame zone 11 more uniform, further prevents fire
Flame is blown partially, improves thermal transition efficiency.
Air-flow reduction of speed structure 2 is preferably plank frame, can make structure simpler in this way, and installation is also more convenient,
And too big space will not be occupied.
For air-flow reduction of speed structure 2, it can be arranged along perpendicular to the direction that flame extends, as shown in Fig. 2, flame edge
Vertical direction extends, and the arranged direction of air-flow reduction of speed structure 2 is parallel with horizontal plane, can be to along erecting by air-flow reduction of speed structure 2
Nogata to the air for flowing to flame zone 11 flow and slow down；In another embodiment, air-flow reduction of speed structure 2 can also edge
The direction arrangement of flame extension is parallel to, for example, when flame vertically extends, air-flow reduction of speed structure 2 is vertically
Arrangement, blows inclined flame to avoid the air for flowing to flame zone 11 in the horizontal direction；In yet another embodiment, air-flow reduction of speed structure
2 can also be obliquely installed relative to the direction that flame extends, and be blown to avoid the air for along inclined direction flowing to flame zone 11 partially fiery
Flame.
About installation position, air-flow reduction of speed structure 2 can be arranged on the lower section and/or side of flame zone 11, with to never
The equidirectional air for flowing to flame zone 11 flow and slow down.
Preferably, air-flow reduction of speed structure 2 is arranged on the air intake of burner 1, equal to be carried out to the air for entering burner 1
Stream and deceleration.
It is further preferred that air-flow reduction of speed structure 2 is arranged on the lower section of burner 1.Specifically, air-flow reduction of speed structure 2 can
To be arranged on the lower section of burner 1 by support construction, air-flow reduction of speed structure 2 can also be directly mounted on to the bottom of burner 1
On face.Wherein preferably directly air-flow reduction of speed structure 2 is mounted on the bottom surface of burner 1, can more effectively be ensured in this way
Into the uniformity of the air-flow of burner 1, and reduce flow velocity.
As being further improved for the utility model burner embodiment, as shown in figure 3, air-flow reduction of speed structure 2 includes
Avoiding structure, avoiding structure be used for prevent when mounted air-flow reduction of speed structure 2 on burner 1 structure (such as connect bolt,
Ignition electrode, ignition detector etc.) it interferes.By setting avoiding structure, the installation that can make air-flow reduction of speed structure 2 is more steady
Gu and avoiding structure has positioning action, can improve the installation effectiveness of air-flow reduction of speed structure 2.
Specifically, avoiding structure can include being arranged on the avoidance notch at the edge of air-flow reduction of speed structure 2.Pass through setting
Notch is avoided, air-flow reduction of speed structure 2 can be enable to avoid some structures on burner 1, avoided interference with.
Preferably, the quantity for avoiding notch is multiple, and multiple avoidance notches are relative to the center line pair of air-flow reduction of speed structure 2
Claim setting.Inverse problem can occur to avoid structure feature during processing in this way, reduce difficulty of processing.
Avoiding structure, can also be by setting the form of bending to be kept away to realize other than using the form for avoiding notch
It allows.Specifically, as shown in Fig. 4~8, air-flow reduction of speed structure 2 includes the bottom plate being arranged on 1 bottom surface of burner, and bottom plate includes equal
Flowing plate 21 and avoidance flanging 22 avoid flanging 22 relative to 21 upward bending of homogenizing plate, so as in the back side of homogenizing plate 21 and combustion
Reserved space is formed between the bottom surface of burner 1, the protrusion 12 for being set to 1 bottom of burner can be carried out by the reserved space
It avoids.Preferably, homogenizing plate 21 and the angle avoided between flanging 22 are obtuse angle.
Wherein, through-hole 20 is arranged on homogenizing plate 21, and through-hole 20 can be set on flanging 22 by avoiding, and can not also be set logical
Hole 20.
As shown in figure 8, for the structure diagram that the protrusion 12 in air-flow reduction of speed structure 2 and burner 1 cooperates, need
Illustrate, which is omitted the one of burner 1 to clearly illustrate the matching relationship of air-flow reduction of speed structure 2 and protrusion 12
A little structures.In this embodiment, it avoids flanging 22 and forms above-mentioned avoiding structure.
Preferably, air-flow reduction of speed structure 2 is arranged on the position for the jet-flow mouth that can avoid burner 1.Due to combustion gas
Jet orifice needs to introduce air, therefore setting can be to avoid air-flow reduction of speed structure 2 to entering premix by jet-flow mouth in this way
The air mass flow of chamber impacts.
Specifically, air-flow reduction of speed structure includes installation folding 23, and air-flow reduction of speed structure 2 is mounted on combustion by installation folding 23
On the side of burner 1, to avoid jet-flow mouth.Wherein, the side of burner 1 can be arranged on burner 1 bottom and
The side in the structure of bottom surface is protruded from, which is arranged on the side of jet-flow mouth, and installation folding 23 is mounted on
Jet-flow mouth can be just avoided on the side of the projective structure, and can be that installation folding 23 provides installation, makes its peace
It fills more convenient.
Through-hole 20 on installation folding 23 can be set, through-hole 20 can not also be set, can specifically be carried out according to actual needs
Selection.
As shown in figure 5, installation folding 23 is equipped with mounting hole 27, installation folding 23 is installed by screw across mounting hole 27
On the side of burner 1.It is simple in structure by way of screw installation, it is easy to disassemble.
Preferably, the side of burner 1 and the bottom surface of burner 1 are mutually perpendicular to, i.e., the side of burner 1 is vertically
Extension, and installation folding 23 is mutually perpendicular to homogenizing plate 21, when mounted can install bottom surface be converted into side installation in this way,
Make easier for installation.
In a preferred embodiment, air-flow reduction of speed structure 2 includes bottom plate and installation folding 23, and bottom plate includes homogenizing plate
21 are set to avoidance flanging 22, avoidance flanging 22 between homogenizing plate 21 and installation folding 23.
In above preferred embodiment, avoid flanging 22 and be connected between homogenizing plate 21 and installation folding 23, such as Fig. 6 institutes
Show, air-flow reduction of speed structure 2 can be made to form structure type of the tool there are two bending, while avoiding interference with, can also be facilitated
Installation.Homogenizing plate 21, avoidance flanging 22 and installation folding 23 can be integrally formed.
In above-mentioned each embodiment, set through-hole 20 is preferably but not limited to as circular hole in air-flow reduction of speed structure 2.
As shown in fig. 7, a diameter of 2~4mm of circular hole, such as 2mm, 3mm.The size can not only meet barrier effect, but also
It is unlikely to influence the air total amount needed for fuel gas buring.The distance between center of circle of two adjacent circular holes is preferably 4~6mm,
Such as 4mm, 5mm.
Based on above-mentioned burner, the utility model also proposes a kind of wall-hung boiler, which includes above-mentioned burning
Device.Certainly, other than wall-hung boiler, burner provided by the utility model can also be applied to other and be related to burning
In equipment, to avoid flame occur deviation the problem of.
Positive technique effect is equally applicable to wall-hung boiler possessed by burner in above-mentioned each embodiment, here no longer
It repeats.
Below in conjunction with the accompanying drawings the concrete structure of one embodiment of 1~8 pair of the utility model burner and wall-hung boiler and
Action principle is described in detail：
As shown in Figures 1 to 3, gas inlet is equipped with below the side of burner 1, combustion gas is entered by the gas inlet
In the rectangular gas-distributing pipe laterally set, the side of gas-distributing pipe is equipped with multiple combustion gas spouts, and combustion gas is formed when being sprayed from combustion gas spout
Ejector action, the air around combustion gas spout enter premix chamber with combustion gas, and combustion gas and air are sufficiently mixed in premix chamber,
Then it sprays and burns by the fire hole of burner top, flame zone 11 is formed in the top of burner 1.Wherein, premix chamber packet
Bending pipeline is included, to lengthen the path that combustion gas is mixed with air, increase is done time in advance, and combustion gas is enable to be sufficiently mixed with air,
Improve efficiency of combustion.In addition, the both sides of burner 1 are equipped with installing plate, burner 1 can be mounted on by wall hanging by the installing plate
On the shell of stove.
Air-flow reduction of speed structure 2 is mounted on the bottom surface of burner 1, and multiple through-holes 20 are spread all in air-flow reduction of speed structure 2.Air-flow
The stainless steel plate that 0.5mm may be used in reduction of speed structure 2 is made, and through-hole 20 can be processed using stamping die, can also lead to
Numerical Control Punch is crossed to be processed；The overall dimensions of air-flow reduction of speed structure 2 can be 270mm*117mm；Add in air-flow reduction of speed structure 2
Work is there are two mounting hole 27, in order to assemble.
As shown in Fig. 4~8, air-flow reduction of speed structure 2 includes homogenizing plate 21, avoids flanging 22 and installation folding 23, homogenizing plate
21 are equipped with the multiple through-holes 20 being evenly arranged, and it is that can set through-hole 20 to avoid flanging 22 and installation folding 23, can not also
Through-hole 20 is set.Homogenizing plate 21 and the angle avoided between flanging 22 are obtuse angle, are avoided between flanging 22 and installation folding 23
Angle is also obtuse angle, and homogenizing plate 21 and installation folding 23 are mutually perpendicular to.Wherein, it is formed between homogenizing plate 21 and avoidance flanging 22
Avoiding structure matched with the protrusion 12 on burner 1.
Multiple avoidance notches are additionally provided in air-flow reduction of speed structure 2, to avoid connection bolt, the perforating needle on burner 1
Etc. structures, prevent from interfering.It avoids notch and includes the first notch 24, the second notch 25 and third notch 26, wherein the first notch 24
The same side of homogenizing plate 21 is arranged on the second notch 25, the first notch 24 includes three, and rectangular shaped；Second notch 25
The both sides of the first notch 24 are separately positioned on, also rectangular shaped, but the area of 24 to the second notch 25 of the first notch is big；It avoids
The length of flanging 22 and installation folding 23 is shorter than the length of homogenizing plate 21, therefore in homogenizing plate 21 and avoids flanging 22 and installation
Third notch 26 is formd between flanging 23.
When being not provided with air-flow reduction of speed structure 2, air-flow blows to flame zone 11, easily blows flame partially from from all directions
Position, influences thermal transition efficiency；And after increasing air-flow reduction of speed structure 2, air can be dredged by air-flow reduction of speed structure 2, be adjusted
Section and deceleration, air is unanimously upward by air-flow reduction of speed 2 rear directions of structure, uniformly disperses, and flow velocity is uniform, does not interfere with flame
Direction can realize higher heat transference efficiency.
Pass through the explanation to the utility model burner and multiple embodiments of wall-hung boiler, it can be seen that the utility model
Burner and wall-hung boiler embodiment at least have the advantages that one or more of：
1st, it by setting air-flow reduction of speed structure, can slow down to the air for flowing to flame zone, prevent air flowing pair
The influence of flame protects the flame of burner that deviation does not occur, and flame is enable to be directed at water route as much as possible, improves converting heat
Efficiency；
2nd, multiple through-holes are evenly arranged, and air-flow reduction of speed structure has current balance function, make to flow to the sky of the flame zone of burner
Gas is more uniform, further prevents flame deviation；
3rd, air-flow reduction of speed structure is mounted on the bottom surface of burner, and stream and slowing effect are more preferable；
4th, air-flow reduction of speed structure is equipped with avoiding structure, can prevent air-flow reduction of speed structure and the structure on burner bottom surface
It interferes.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (14)
- A kind of 1. burner, which is characterized in that the air-flow reduction of speed structure including burner (1) and with multiple through-holes (20) (2), the air-flow reduction of speed structure (2) can slow down to the air for the flame zone (11) for flowing to the burner (1).
- 2. burner according to claim 1, which is characterized in that multiple through-holes (20) are in the air-flow reduction of speed knot Structure is evenly arranged on (2), to realize current balance function to the air of the flame zone for flowing to the burner (1) (11)；It is alternatively, multiple The through-hole (20) subregion on the air-flow reduction of speed structure (2) is set, the through-hole (20) uniform cloth in each region It puts, to realize current balance function to the air of the flame zone for flowing to the burner (1) (11).
- 3. burner according to claim 1, which is characterized in that the air-flow reduction of speed structure (2) is along perpendicular to flame The direction arrangement of extension；Alternatively, the air-flow reduction of speed structure (2) is arranged along the direction for being parallel to flame extension；Alternatively, the gas Stream reduction of speed structure (2) is obliquely installed relative to the direction that flame extends.
- 4. burner according to claim 1, which is characterized in that the air-flow reduction of speed structure (2) is arranged on the fire The lower section and/or side in flame area (11).
- 5. burner according to claim 1, which is characterized in that the air-flow reduction of speed structure (2) is including being mounted on State the bottom plate on the bottom surface of burner (1).
- 6. burner according to claim 1, which is characterized in that the air-flow reduction of speed structure (2) includes avoiding structure, The avoiding structure is used to prevent the air-flow reduction of speed structure (2) from the burner (1) interfering.
- 7. burner according to claim 6, which is characterized in that the avoiding structure includes being arranged on the air-flow drop The avoidance notch at the edge of fast structure (2).
- 8. burner according to claim 7, which is characterized in that the quantity for avoiding notch is multiple and multiple The avoidance notch is symmetrical arranged relative to the center line of the air-flow reduction of speed structure (2).
- 9. burner according to claim 5, which is characterized in that the bottom plate includes homogenizing plate (21) and avoids flanging (22), to be avoided to the protrusion (12) for being set to the burner (1) bottom.
- 10. burner according to claim 1, which is characterized in that the air-flow reduction of speed structure (2) is arranged on and can keep away Open the position of the jet-flow mouth of the burner (1).
- 11. burner according to claim 10, which is characterized in that the air-flow reduction of speed structure (2) is rolled over including installation Side (23), the air-flow reduction of speed structure (2) by the installation folding (23) on the side of the burner (1), with Avoid the jet-flow mouth.
- 12. burner according to claim 11, which is characterized in that on the bottom surface of the burner (1) Bottom plate includes homogenizing plate (21) and avoids flanging (22), and the avoidance flanging (22) is set to the homogenizing plate (21) and the peace Between dress flanging (23).
- 13. according to claim 1~12 any one of them burner, which is characterized in that the through-hole (20) be circular hole, institute The distance between center of circle of a diameter of 2~4mm and/or two adjacent circular hole of circular hole is stated as 4~6mm.
- 14. a kind of wall-hung boiler, which is characterized in that including such as claim 1~13 any one of them burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721584758.XU CN207584769U (en) | 2017-11-24 | 2017-11-24 | Burner and wall-hung boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721584758.XU CN207584769U (en) | 2017-11-24 | 2017-11-24 | Burner and wall-hung boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207584769U true CN207584769U (en) | 2018-07-06 |
Family
ID=62733327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721584758.XU Active CN207584769U (en) | 2017-11-24 | 2017-11-24 | Burner and wall-hung boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207584769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781808A (en) * | 2017-11-24 | 2018-03-09 | 珠海格力电器股份有限公司 | Burner and wall-hung boiler |
-
2017
- 2017-11-24 CN CN201721584758.XU patent/CN207584769U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781808A (en) * | 2017-11-24 | 2018-03-09 | 珠海格力电器股份有限公司 | Burner and wall-hung boiler |
| CN107781808B (en) * | 2017-11-24 | 2023-03-14 | 珠海格力电器股份有限公司 | Burner and hanging stove |
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