CN207701327U - A kind of exhaust valve plate, compressor and air conditioner - Google Patents
A kind of exhaust valve plate, compressor and air conditioner Download PDFInfo
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- CN207701327U CN207701327U CN201721675515.7U CN201721675515U CN207701327U CN 207701327 U CN207701327 U CN 207701327U CN 201721675515 U CN201721675515 U CN 201721675515U CN 207701327 U CN207701327 U CN 207701327U
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Abstract
A kind of exhaust valve plate of the utility model offer, compressor and air conditioner, the exhaust valve plate (100), including：Tail portion (1), the flange (3) for exhaust valve plate to be fixed to compressor；Head (2), it is corresponding with exhaust outlet (4) position of compressor, it can be relative to the tail portion (1) upward exhaust outlet (4) that dig to open compressor and downward return with the exhaust outlet (4) of close compressor, and projective structure (5) is additionally provided on the lower surface of the head (2), in a manner of downwardly projecting, and gradually risen from the tail portion (1) to the head (2) along the protrusion height of the length direction of the exhaust valve plate (100), the projective structure (5).It can play the role of flow-disturbing and water conservancy diversion using projective structure by the utility model, gas dispersion reduces flutter and the microseismic noise of valve block to the impact force of valve block, improves valve structure reliability, improves compressor noise oscillating mass.
Description
Technical field
The utility model belongs to Compressor Technology field, and in particular to a kind of exhaust valve plate, compressor and air conditioner.
Background technology
For the prior art during compressor air-discharging, valve block is bent upwards opening, leans against on valve block baffle, from compressor
The high speed and high pressure gas-liquid mixture that cylinder injection goes out impacts valve block, and for valve block since its thickness is thin, rigidity is low, is rushed in the gas of high speed
It hits down, it may occur that similar to the self-excited vibration that flag flutters in the wind, referred to as flutter.It is disconnected that flutter may result in valve block fatigue
It splits, reduces valve structure reliability；Meanwhile the air-flow of high speed is to flow through valve block with a kind of turbulent condition, in valve block lower surface
Many small vortex are formed, microseismic noise is brought, compressor noise vibration is made to increase.
Since compressor air-discharging in the prior art leads to valve block fatigue fracture, valve structure reliability there are flutter
It is low, while air-flow personnel can form many small vortex, bring microseismic noise, compressor noise is made to vibrate in valve block lower surface
The technical problems such as increase, therefore the utility model research and design goes out a kind of exhaust valve plate, compressor and air conditioner.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome compressor air-discharging in the prior art, there are flutters
And the defect for causing valve block fatigue fracture, valve structure reliability low, to provide a kind of exhaust valve plate, compressor and air-conditioning
Device.
The utility model provides a kind of exhaust valve plate comprising：
Tail portion, the flange for exhaust valve plate to be fixed to compressor；
Head, it is corresponding with the vent position of compressor, it can upwards be dug relative to the tail portion to open compression
The exhaust outlet of machine and downwards return are with the exhaust outlet of close compressor；
And on the lower surface on the head, projective structure is additionally provided in a manner of downwardly projecting, and along the exhaust
The length direction of valve block, the projective structure protrusion height gradually risen from the tail portion to the head.
Preferably,
In vertical section, the width of the lower end of the projective structure be less than upper end width.
Preferably,
The width of the projective structure gradually increases from lower end to upper end.
Preferably,
The projective structure includes the protrusion rib extended along the length direction of the exhaust valve plate.
Preferably,
Along the length direction, it is described protrusion rib width be wide structure, alternatively, along the length direction,
The width of the protrusion rib gradually increases from the tail portion to the head.
Preferably,
The protrusion rib is multiple, and along the extension of the length direction of exhaust valve plate and along the width of the exhaust valve plate
Degree direction is arranged side by side.
Preferably,
Between multiple protrusion ribs, in vertical section, along the width direction of exhaust valve plate, positioned at intermediate convex
The protrusion height for going out rib is more than the protrusion height of the protrusion rib positioned at both sides.
Preferably,
The projective structure includes multiple salient points, and along the length direction of the exhaust valve plate, multiple salient points
Protrusion height gradually rises from the tail portion to the head.
Preferably,
Multiple salient points are evenly distributed on the lower surface on the head.
Preferably,
The projective structure is recessed by the way that the head is stamped to form downwards type and is formed in the upper surface on the head
Slot；Alternatively, the projective structure is formed by adding component on the lower surface on the head.
The present invention also provides a kind of compressors, including exhaust outlet comprising preceding any one of them exhaust valve plate, the row
Air valve plate connects with exhaust outlet matching.
Preferably,
Further include flange, the exhaust outlet of the compressor is set on the flange.
The present invention also provides a kind of air conditioners comprising preceding any one of them compressor.
A kind of exhaust valve plate, compressor and air conditioner provided by the utility model have the advantages that：
1. the exhaust valve plate of the utility model, compressor and air conditioner, by the lower surface on the head, with downward
The mode of protrusion is additionally provided with projective structure, and along the length direction of the exhaust valve plate, the protrusion height of the projective structure
The mode gradually risen from the tail portion to the head enables to the air-flow when the high speed and high pressure being discharged from compresser cylinder
When mixture impacts and flows through valve block, projective structure (including groove or pit) plays the role of flow-disturbing and water conservancy diversion, gas dispersion
To the impact force of valve block, changing air motion state, air-flow is made to become hybrid state, a part of air-flow exciting force is cancelled out each other,
A part reduces the flutter of valve block to external diffusion, gas dispersion to the impact force of valve block, reduces the microseismic noise of valve block, improves
The structural reliability of valve block, so as to improve compressor noise oscillating mass；
2. the exhaust valve plate of the utility model, compressor and air conditioner can reduce pressure by the way that above-mentioned projective structure is arranged
The vortex formed in valve block lower surface when contracting machine is vented reduces compressor airflow microseismic noise, improves the structural reliability of valve block,
So as to improve compressor noise oscillating mass；
3. the exhaust valve plate of the utility model, compressor and air conditioner, multiple downward grooves are arranged (i.e. in valve block round head
Projective structure), groove can be along the one large one small wedge groove of valve block length direction, can also be wide rectangular
Slot, can also be multiple small ruts, and groove or pit are in the big shape in the small top in lower part in vertical direction；
4. the exhaust valve plate of the utility model, compressor and air conditioner, by setting the projective structure to its lower end
Width be less than the width of the preferred projective structure of width of upper end and gradually increase from lower end to upper end, can be in compressor air-discharging
In the process, when the refrigerant mixture of gas streams of high speed and high pressure in compresser cylinder impacts and flows through valve block lower surface, groove or recessed
Hole (projective structure) is similar to the flow-interfering bar of aircraft wing or empennage, further plays the role of flow-disturbing and water conservancy diversion, changes
The motion state for becoming air-flow makes air-flow become hybrid state, and a part of air-flow exciting force cancels out each other, a part to external diffusion,
Gas dispersion reduces the flutter of valve block to the impact force of valve block.
Description of the drawings
Fig. 1 is existing exhaust valve plate and the matched overlooking structure diagram of flange；
Fig. 2 is the schematic cross-sectional view in the directions the A-A section of Fig. 1；
Fig. 3 a are the overlooking structure figures of the exhaust valve plate in Fig. 1；
Fig. 3 b are the B-B direction sectional structure charts of the exhaust valve plate of Fig. 3 a；
Fig. 4 is the exhaust valve plate and the matched overlooking structure diagram of flange of the utility model；
Fig. 5 is the schematic cross-sectional view in the directions the C-C section of Fig. 4；
Fig. 6 a are the overlooking structure figures of the exhaust valve plate of the utility model embodiment 1；
Fig. 6 b are the D-D of Fig. 6 a to sectional view；
Fig. 6 c are the enlarged structure schematic diagrams of the parts F of Fig. 6 b；
Fig. 6 d are the E-E of Fig. 6 a to sectional view；
Fig. 7 is the overlooking structure figure of the exhaust valve plate of the utility model embodiment 2；
Fig. 8 a are the overlooking structure figures of the exhaust valve plate of the utility model embodiment 3；
Fig. 8 b are the G-G of Fig. 8 a to sectional view.
Reference numeral is expressed as in figure：
100, exhaust valve plate；1, tail portion；2, head；3, flange；4, exhaust outlet；5, projective structure；51, rib is protruded；52、
Salient point；6, valve block baffle；7, rivet；8, interconnecting piece.
Specific implementation mode
Shown in Fig. 4-8b, the utility model provides a kind of exhaust valve plate 100 comprising：
Tail portion 1, the flange 3 for exhaust valve plate to be fixed to compressor；
Head 2, it is corresponding with 4 position of exhaust outlet of compressor, it can upwards be dug relative to the tail portion 1 to open pressure
With the exhaust outlet 4 of close compressor, exhaust valve plate 100 further includes for connecting tail portion for the exhaust outlet 4 of contracting machine and downwards return
1 and head 2 interconnecting piece 8；
And projective structure 5 is additionally provided on the lower surface on the head 2, in a manner of downwardly projecting, and along the row
The length direction of air valve plate 100, the projective structure 5 protrusion height gradually risen from the tail portion 1 to the head 2.
By on the lower surface on the head, projective structure is additionally provided in a manner of downwardly projecting, and along the row
The mode that is gradually risen from the tail portion to the head of protrusion height of the length direction of air valve plate, the projective structure, energy
It is enough to make when the mixture of gas streams for the high speed and high pressure being discharged from compresser cylinder impacts and flows through valve block, projective structure (including
Groove or pit) play the role of flow-disturbing and water conservancy diversion, gas dispersion changes air motion state, makes gas to the impact force of valve block
Stream becomes hybrid state, and a part of air-flow exciting force is cancelled out each other, a part of to external diffusion, impact of the gas dispersion to valve block
Power reduces the flutter of valve block, reduces the microseismic noise of valve block, the structural reliability of valve block is improved, so as to improve compressor noise
Oscillating mass；
It is gradually risen from the tail portion 1 to the head 2 by the protrusion height of projective structure 5, valve block is enabled to exist
So that air-flow is guided towards valve block outer end (valve block right end as shown in Figure 5) when opening exhaust outlet, to realize pair
Air-flow carries out the effect of water conservancy diversion so that air-flow can be successfully directed out after valve block opens exhaust outlet；
By the way that above-mentioned projective structure is arranged, the vortex formed in valve block lower surface when compressor air-discharging can be reduced, is reduced
Compressor airflow microseismic noise improves the structural reliability of valve block, so as to improve compressor noise oscillating mass.
Preferably,
In vertical section, the width of the lower end of the projective structure 5 be less than upper end width.By the way that the protrusion is tied
The width that structure is set as its lower end gradually increases less than the width of the preferred projective structure of width of upper end from lower end to upper end, can
During compressor air-discharging, when the refrigerant mixture of gas streams of high speed and high pressure in compresser cylinder impacts and flows through valve block following table
When face, groove or pit (projective structure) are similar to the flow-interfering bar of aircraft wing or empennage, further play flow-disturbing and
The effect of water conservancy diversion changes the motion state of air-flow, and air-flow is made to become hybrid state, and a part of air-flow exciting force is cancelled out each other, and one
To external diffusion, gas dispersion reduces the flutter of valve block to the impact force of valve block for part.
Preferably,
The width of the projective structure 5 gradually increases from lower end to upper end.This is the further of the projective structure of the present invention
Preferred width structure form can form the stronger flow-interfering bar for being similar to wing or empennage of flow-disturbing effect, increase to air-flow
Flow-disturbing effect.
Preferably,
The projective structure 5 includes the protrusion rib 51 extended along the length direction of the exhaust valve plate 100.This is this hair
The structure type of the embodiment 1 of bright exhaust valve plate and the projective structure of embodiment 2, referring to attached drawing 6a and Fig. 7, due to air-flow stream
Dynamic direction is to be discharged again along the length direction of valve block when first impacting valve block straight up, again, therefore will protrude rib along valve block
Length direction is disposed to extend, and can be formed preferable guide functions (when valve block opens exhaust outlet) to air-flow, be closed in valve block
Flow-disturbing effect is carried out to air-flow when exhaust outlet, can also flow-disturbing effect be carried out to air-flow certainly when valve block opens exhaust outlet.
Preferably,
Width along the length direction, the protrusion rib 51 is that (this is the implementation of the utility model to wide structure
The structure type of example 2, such as Fig. 7), alternatively, along the length direction, it is described protrusion rib 51 width from the tail portion 1 to
The head 2 gradually increases (this is the structure type of the embodiments of the present invention 1, such as Fig. 6 a-6d).Pass through wide protrusion
Gradually increased wedge shape protrusion rib, the equal flow-disturbing effect that can be realized to air-flow change air motion state, make for rib and width
Air-flow becomes hybrid state, and a part of air-flow exciting force is cancelled out each other, and a part prevents flutter, but pass through width to external diffusion
Gradually increased wedge shape protrudes rib to degree, the effect of expansion pressure release can be formed to air-flow so that air-flow can more swimmingly flow
Go out valve block.
Preferably,
The protrusion rib 51 is multiple, and along the extension of the length direction of exhaust valve plate 100 and along the exhaust valve plate
100 width direction is arranged side by side.Referring to Fig. 6 a, Fig. 7, this is the arrangement mode of multiple protrusion ribs of the utility model, is made
Valve block can be exported between adjacent protrusion rib and can also be raised rib disturbance by obtaining air-flow, prevent valve block flutter.
Preferably,
Between multiple protrusion ribs 51, in vertical section, along exhaust valve plate 100 width direction, be located at
Between protrusion rib 51 protrusion height be more than positioned at both sides protrusion rib 51 protrusion height.Flow due to air-flow and punching
Advocate to concentrate on intermediate protrusion rib if hitting and weakened towards periphery, therefore centre is protruded to the protrusion height of rib
It is set as highest, enables to the effect of flow-disturbing to be better than both sides, so that having to flow and the highest air-flow of impact force
Targetedly maximum flow-disturbing so that the flow-disturbing effect for protruding rib reaches maximization, prevents flutter and reduces vortex
Effect is optimal.
Preferably,
The projective structure 5 includes multiple salient points 52, and along the length direction of the exhaust valve plate 100, multiple described
The protrusion height of salient point 52 gradually rises from the tail portion 1 to the head 2.This is the embodiments of the present invention 3 (referring to attached
Fig. 8 a) the third structure type of projective structure can flow-disturbing be carried out to air-flow in the same old way, and led by multiple salient points
Stream acts on, and direction of the protrusion height between multiple salient points from tail portion to head gradually rises, and can ensure that air-flow is smooth
Ground exports valve block outer end, and eddy current loss is reduced while reducing flutter.
Preferably,
Multiple salient points 52 are evenly distributed on the lower surface on the head 2.This is multiple salient points of the utility model
Preferred arrangement and arrangement mode.
Preferably,
The projective structure 5 is by being stamped to form downwards type to the head and being formed in the upper surface on the head recessed
Fall into slot；Alternatively, the projective structure is formed by adding component on the lower surface on the head 2.This is the utility model
The preferred molding mode of projective structure, by impact style can to valve block upper table downwards punching press, by formed in upper surface it is recessed
Slot is fallen into, or turbulator member is set to play the role of flow-disturbing water conservancy diversion in lower surface.
Compressor pump is mainly made of parts such as cylinder, upper lower flange, roller, bent axle, slide plates, cylinder and upper lower flange
Between form closed space, roller and slide plate are placed in cylinder, confined space is divided into the compression chamber of suction muffler, bent axle drives
Roller rotates so that the volume of suction muffler and compression chamber changes.Valve block and valve block baffle are installed on flange, when in compression chamber
Volume be gradually reduced, when pressure is gradually risen to a certain extent, valve block passive open under the action of compressing cavity pressure, compression
Machine starts to be vented, and the effect of valve block baffle is excessive deformation when preventing valve block from opening, and limits the opening amplitude of valve block.In compressor
When exhaust, the refrigerant flow rate inside cylinder quickly, impacts valve block, and for valve block due to its very thin thickness, rigidity is low, in high speed
Refrigerant impact under be easy to happen the self-excited vibration to flutter in the wind similar to flag, referred to as flutter.By in valve block round head
It can be along valve block length direction (from dextrad that single or multiple downward grooves or pit (i.e. projective structure 5), groove, which are arranged,
It is left) gradual increased wedge slot can also be wide square groove or multiple small ruts, groove or pit are in Vertical Square
Upwards in the big shape in the small top in lower part.During compressor air-discharging, when the refrigerant gas of high speed and high pressure in compresser cylinder
Stream mixture is when impacting and flowing through valve block lower surface, and groove or pit are similar to the flow-interfering bar of aircraft wing or empennage, play
The effect of flow-disturbing and water conservancy diversion changes the motion state of air-flow, and air-flow is made to become hybrid state, and a part of air-flow exciting force mutually supports
Disappearing, for a part to external diffusion, gas dispersion reduces the flutter of valve block to the impact force of valve block, such as Fig. 6 a-8b, groove or pit
The rigidity of valve block can also be increased, valve block plain bending and Torsion mode frequency is improved, avoid the driving frequency of refrigerant, can also inhibit
Valve block vibrates and the generation of flutter.Meanwhile the effect of the flow-disturbing of groove or pit can reduce what turbulent flow was formed in valve block lower surface
Small vortex reduces the microseismic noise caused by vortex such as Fig. 6 a-8b, so as to improve compressor noise oscillating mass, improves valve
The structural reliability of piece.
The position of groove or pit should in the projection perimeter face of flange gas vent, with ensure valve block close when not with method
Blue gas vent interference, ensures closure when valve block is closed.Groove or pit can also be to use generally by punch forming
Other materials valve block lower surface fill, play the role of shape identical with groove and.
The utility model also provides a kind of compressor, including exhaust outlet comprising preceding any one of them exhaust valve plate, institute
Exhaust valve plate is stated with exhaust outlet matching to connect.
By on the lower surface on the head, projective structure is additionally provided in a manner of downwardly projecting, and along the row
The mode that is gradually risen from the tail portion to the head of protrusion height of the length direction of air valve plate, the projective structure, energy
It is enough to make when the mixture of gas streams for the high speed and high pressure being discharged from compresser cylinder impacts and flows through valve block, projective structure (including
Groove or pit) play the role of flow-disturbing and water conservancy diversion, gas dispersion changes air motion state, makes gas to the impact force of valve block
Stream becomes hybrid state, and a part of air-flow exciting force is cancelled out each other, a part of to external diffusion, impact of the gas dispersion to valve block
Power reduces the flutter of valve block, reduces the microseismic noise of valve block, the structural reliability of valve block is improved, so as to improve compressor noise
Oscillating mass；
It is gradually risen from the tail portion 1 to the head 2 by the protrusion height of projective structure 5, valve block is enabled to exist
So that air-flow is guided towards valve block outer end (valve block right end as shown in Figure 5) when opening exhaust outlet, to realize pair
Air-flow carries out the effect of water conservancy diversion so that air-flow can be successfully directed out after valve block opens exhaust outlet；
By the way that above-mentioned projective structure is arranged, the vortex formed in valve block lower surface when compressor air-discharging can be reduced, is reduced
Compressor airflow microseismic noise improves the structural reliability of valve block, so as to improve compressor noise oscillating mass.
The inventive point of the invention is：In valve block round head, multiple downward grooves (i.e. projective structure 5) are set, it is recessed
Slot can be can also be wide square groove, can also be more along the one large one small wedge slot of valve block length direction
A small rut, groove or pit are in the big shape in the small top in lower part in vertical direction.(following Fig. 6 d)
Preferably,
Further include flange (preferably upper flange), the exhaust outlet of the compressor is set on the flange 3.This is this reality
It is preferably provided with position with novel exhaust valve plate, can realize the scavenging action to compressor.
The utility model also provides a kind of air conditioner comprising preceding any one of them compressor.
1. the single or multiple downward grooves or pit (i.e. projective structure 5) that are arranged by valve block round head are to air-flow
Flow-disturbing and guide functions, the flutter of valve block when reducing compressor air-discharging reduce resulting noise and vibration, and improve valve block
Structural reliability；
2. the groove or pit of valve block, which can effectively reduce high-speed gas, flows through the vortex formed when valve block lower surface, to
The noise of compressor is reduced, the noise of especially middle low frequency improves compressor quality.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.The above is only the preferred embodiment of the utility model, it is noted that for the art
For those of ordinary skill, without deviating from the technical principle of the utility model, several improvements and modifications can also be made,
These improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (13)
1. a kind of exhaust valve plate (100), it is characterised in that：Including：
Tail portion (1), the flange (3) for exhaust valve plate to be fixed to compressor；
Head (2), it is corresponding with exhaust outlet (4) position of compressor, it can upwards be dug relative to the tail portion (1) to open
The exhaust outlet (4) of compressor and downwards return are with the exhaust outlet (4) of close compressor；
And projective structure (5) is additionally provided on the lower surface of the head (2), in a manner of downwardly projecting, and along the row
The length direction of air valve plate (100), the protrusion height of the projective structure (5) are gradual from the tail portion (1) to the head (2)
It increases.
2. exhaust valve plate according to claim 1, it is characterised in that：
In vertical section, the width of the lower end of the projective structure (5) be less than upper end width.
3. exhaust valve plate according to claim 2, it is characterised in that：
The width of the projective structure (5) gradually increases from lower end to upper end.
4. exhaust valve plate according to any one of claim 1-3, it is characterised in that：
The projective structure (5) includes the protrusion rib (51) extended along the length direction of the exhaust valve plate (100).
5. exhaust valve plate according to claim 4, it is characterised in that：
Along the length direction, it is described protrusion rib (51) width be wide structure, alternatively, along the length direction,
The width of the protrusion rib (51) gradually increases from the tail portion (1) to the head (2).
6. exhaust valve plate according to claim 4, it is characterised in that：
The protrusion rib (51) is multiple, and along the extension of the length direction of exhaust valve plate (100) and along the exhaust valve plate
(100) width direction is arranged side by side.
7. exhaust valve plate according to claim 6, it is characterised in that：
Between multiple protrusion ribs (51), in vertical section, along exhaust valve plate (100) width direction, be located at
Between protrusion rib (51) protrusion height be more than positioned at both sides protrusion rib (51) protrusion height.
8. exhaust valve plate according to any one of claim 1-3, it is characterised in that：
The projective structure (5) includes multiple salient points (52), and along the length direction of the exhaust valve plate (100), Duo Gesuo
The protrusion height for stating salient point (52) gradually rises from the tail portion (1) to the head (2).
9. exhaust valve plate according to claim 8, it is characterised in that：
Multiple salient points (52) are evenly distributed on the lower surface of the head (2).
10. exhaust valve plate according to any one of claim 1-3, it is characterised in that：
The projective structure (5) is recessed by the way that the head is stamped to form downwards type and is formed in the upper surface on the head
Slot；Alternatively, the projective structure is formed by adding component on the lower surface of the head (2).
11. a kind of compressor, including exhaust outlet, it is characterised in that：Including the air bleeding valve described in any one of claim 1-10
Piece, the exhaust valve plate connect with exhaust outlet matching.
12. compressor according to claim 11, it is characterised in that：
Further include flange, the exhaust outlet of the compressor is set on the flange (3).
13. a kind of air conditioner, it is characterised in that：Including the compressor described in any one of claim 11-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675515.7U CN207701327U (en) | 2017-12-04 | 2017-12-04 | A kind of exhaust valve plate, compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675515.7U CN207701327U (en) | 2017-12-04 | 2017-12-04 | A kind of exhaust valve plate, compressor and air conditioner |
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| Publication Number | Publication Date |
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| CN207701327U true CN207701327U (en) | 2018-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622932A (en) * | 2019-02-28 | 2020-09-04 | 普罗名特有限责任公司 | Volumetric pump with flow-promoting surfaces |
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2017
- 2017-12-04 CN CN201721675515.7U patent/CN207701327U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622932A (en) * | 2019-02-28 | 2020-09-04 | 普罗名特有限责任公司 | Volumetric pump with flow-promoting surfaces |
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Effective date of registration: 20190723 Address after: 230088 Anhui city of Hefei province high tech Zone Parkinson weir Science Park Road No. 209. Co-patentee after: Zhuhai Lingda Compressor Co.,Ltd. Patentee after: Hefei Landa Compressor Co., Ltd. Co-patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519110 Longshan Road, Doumen Industrial Zone, Guangdong, Zhuhai, No. 1 Co-patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Patentee before: Zhuhai Landa Compressor Co., Ltd. |