CN206035809U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN206035809U CN206035809U CN201620890545.9U CN201620890545U CN206035809U CN 206035809 U CN206035809 U CN 206035809U CN 201620890545 U CN201620890545 U CN 201620890545U CN 206035809 U CN206035809 U CN 206035809U
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- resonant cavity
- rotary compressor
- lower cover
- plate
- communicating passage
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Abstract
The utility model discloses a rotary compressor. This rotary compressor includes the cylinder apron, rolling piston and pump body cylinder, the piston chamber has in the pump body cylinder, rolling piston rolls and sets up at the piston intracavity, it is provided with the slide to slide on the pump body cylinder, the one end butt of slide is on rolling piston's outer wall, separate the piston chamber for chamber and the compression chamber of breathing in, be provided with the resonant cavity on the cylinder apron, be provided with the gas vent on the pump body cylinder, resonant cavity and compression chamber do not communicate with each other when breathing in the stage at rotary compressor, be in the compression at rotary compressor, the exhaust communicate during the stage. According to the utility model discloses a rotary compressor can effectively cushion compressor pump and at compression, the refrigerant pressure fluctuation in exhaust stage, reduce compressor vibration, noise, solves the performance reduction problem that traditional resonant cavity scheme arouses simultaneously.
Description
Technical field
This utility model is related to Compressor Technology field, in particular to a kind of rotary compressor.
Background technology
In existing rotary compressor, the pump housing is generally by bent axle, upper flange, upper deafener, roller, cylinder, purgation
The parts such as orchid, bottom silencer are constituted.In the compressor with the lower exhaust structure pump housing, gases at high pressure are discharged to from lower air vent
In the cavity of lower noise reduction, upper deafener or the pump housing are discharged to by the single tube passage between lower flange cylinder upper flange then
It is outside.
Roller type compressor pump can produce larger pressure in compression and exhaust phase coolant in compressor operation
Power is pulsed, and causes compressor oscillation phenomenon integrally occur so that complete machine oscillation is more violent, and pressure fluctuation is also resulted in and made an uproar
Sound problem.
The noise reduction means of existing compressor pump are all to arrange resonant cavity carrying out noise reduction in the pump housing air vent of compressor,
But this kind of scheme is at the end of compressor air-discharging, the high pressure refrigerant overstock in resonant cavity can be back to suction muffler, increased clearance
Volume, the problem for easily causing gettering efficiency to reduce, increased compressor power consumption, while the performance of compressor can be caused to reduce.
Utility model content
A kind of rotary compressor is provided in this utility model embodiment, effectively buffer compression pump body can compressed, arranged
The refrigerant pressure pulsation in gas stage, reduces vibration of compressor, noise, while solving the compressor that traditional resonant cavity scheme causes
Problem can be declined.
For achieving the above object, this utility model embodiment provides a kind of rotary compressor, including cylinder cover plate, rolls and lives
There is in plug and pump housing cylinder, the pump housing cylinder plunger shaft, rolling piston is rolled and is arranged on piston intracavity, sliding on pump housing cylinder sets
Slide plate is equipped with, one end of slide plate is connected on the outer wall of rolling piston, and plunger shaft is divided into suction muffler and compression chamber, cylinder head
Resonant cavity is provided with plate, air vent is provided with pump housing cylinder, and resonant cavity is in air-breathing rank with compression chamber in rotary compressor
It is not communicated with during section, connects when rotary compressor is in compression, exhaust phase.
Preferably, resonant cavity is gradually connected with compression chamber when rolling piston turns over air-breathing ending corner, in rotary compression
The exhaust phase latter stage of machine is gradually disconnected with compression chamber and being connected.
Preferably, cylinder cover plate is lower cover of air cylinder plate, connection resonant cavity and compression chamber on lower cover of air cylinder plate, is additionally provided with
Communicating passage, the volume of the volume of communicating passage less than resonant cavity.
Preferably, resonant cavity being radially arranged along lower cover of air cylinder plate, is provided with sealing-plug at the outer openings of resonant cavity,
Communicating passage is provided with the upside of resonant cavity, and communicating passage is axially extended to the upper surface of lower cover of air cylinder plate.
Preferably, resonant cavity being radially arranged along lower cover of air cylinder plate, is provided with sealing-plug at the outer openings of resonant cavity,
Communicating passage is provided with the upside of resonant cavity, and communicating passage is obliquely extended to the upper surface of lower cover of air cylinder plate.
Preferably, resonant cavity is provided with sealing-plug at the axially arranged of lower cover of air cylinder plate, the bottom opening of resonant cavity,
Communicating passage is provided with the top of resonant cavity, and communicating passage forms stepped hole with resonant cavity, and communicating passage is axially extended to gas
The upper surface of cylinder lower cover.
Preferably, the axially disposed communicating passage for having the upper surface for extending to lower cover of air cylinder plate on lower cover of air cylinder plate,
The bottom of communicating passage is provided with resonance block, is provided with resonant cavity on resonance block, and resonant cavity is connected with communicating passage.
Preferably, communicating passage includes the different first passage of diameter and second channel, first passage and second channel
It is commonly connected to resonant cavity, first passage and second channel extend to the upper surface of lower cover of air cylinder plate.
Preferably, communicating passage includes the different first passage of diameter and second channel, resonant cavity includes separating setting
The first chamber and the second chamber, first passage connected with the first chamber, and second channel is connected with the second chamber, first passage and second channel
Extend to the upper surface of lower cover of air cylinder plate.
Preferably, resonant cavity extends to surface of the cylinder cover plate near pump housing cylinder side, resonant cavity is away from pump housing gas
One side seal of cylinder.
Using the technical solution of the utility model, rotary compressor includes cylinder cover plate, rolling piston and pump housing cylinder, pump
There is in bromhidrosis cylinder plunger shaft, rolling piston is rolled and is arranged on piston intracavity, sliding on pump housing cylinder is provided with slide plate, slide plate
One end is connected on the outer wall of rolling piston, and plunger shaft is divided into suction muffler and compression chamber, resonance is provided with cylinder cover plate
Chamber, is provided with air vent on pump housing cylinder, resonant cavity is not communicated with when rotary compressor is in expiratory phase with compression chamber, in rotation
Rotary compressor is connected when being in compression, exhaust phase.As a result of structure of resonant cavity of the present utility model, because resonant cavity exists
Air-breathing ending corner was just connected with compression chamber to aerofluxuss latter stage, and resonant cavity works in coolant compression stage and aerofluxuss early stage, can
Pressure fluctuation of the buffering pump housing coolant in compression stage and exhaust phase, so that reduce vibration of compressor, noise；In addition, because
Do not connect with suction muffler in expiratory phase resonant cavity, not resulting in cavity inner high voltage refrigerant return affects air-breathing to imitate in suction muffler
Rate, greatly reduces impact of the conventional resonant cavity scheme clearance loss to compressor performance.
Description of the drawings
Fig. 1 is the resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Fig. 2 be this utility model embodiment rotary compressor be in expiratory phase when structural representation；
Fig. 3 is the rotary compressor of this utility model embodiment in structural representation when compressing the starting stage；
Fig. 4 is structural representation of the rotary compressor of this utility model embodiment in compression stage；
Fig. 5 is the structural representation of the rotary compressor in compression stage latter stage of this utility model embodiment；
Fig. 6 is the decomposition texture schematic diagram of the rotary compressor of this utility model embodiment；
Fig. 7 is the first resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Fig. 8 is second resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Fig. 9 is the third resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Figure 10 is the 4th kind of resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Figure 11 is the 5th kind of resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Figure 12 is the 6th kind of resonant structure schematic diagram of the rotary compressor of this utility model embodiment；
Figure 13 is the 7th kind of resonant structure schematic diagram of the rotary compressor of this utility model embodiment.
Description of reference numerals：1st, cylinder cover plate；2nd, rolling piston；3rd, pump housing cylinder；4th, slide plate；5th, suction muffler；6th, compress
Chamber；7th, air vent；8th, resonant cavity；9th, communicating passage；10th, sealing-plug；11st, resonate block；12nd, first passage；13rd, second channel；
14th, the first chamber；15th, the second chamber.
Specific embodiment
This utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as to this practicality
New restriction.
With reference to referring to shown in Fig. 1 to Figure 13, according to embodiment of the present utility model, rotary compressor include cylinder cover plate 1,
Rolling piston 2 and pump housing cylinder 3, have plunger shaft in pump housing cylinder 3, rolling piston 2 is rolled and is arranged on piston intracavity, pump housing gas
Slide on cylinder 3 and be provided with slide plate 4, one end of slide plate 4 is connected on the outer wall of rolling piston 2, and plunger shaft is divided into suction muffler 5
With compression chamber 6, resonant cavity 8 on cylinder cover plate 1, is provided with, on pump housing cylinder 3, is provided with air vent 7, resonant cavity 8 and compression chamber 6
It is not communicated with when rotary compressor is in expiratory phase, connects when rotary compressor is in compression, exhaust phase.
As a result of structure of resonant cavity of the present utility model, because resonant cavity 8 terminates angle beta to aerofluxuss latter stage ability in air-breathing
Connect with compression chamber 6, resonant cavity 8 works in coolant compression stage and aerofluxuss early stage, pump housing coolant can be buffered in compression rank
The pressure fluctuation of section and exhaust phase, so that reduce vibration of compressor, noise；In addition, because expiratory phase resonant cavity 8 not with
Suction muffler 5 is connected, and not resulting in cavity inner high voltage refrigerant return affects gettering efficiency in suction muffler, is greatly reduced conventional common
Shake impact of the chamber scheme clearance loss to compressor performance.
Resonant cavity of the present utility model 8 is coordinated with the end face of rolling piston 2, is formed according to the characteristics of motion of rolling piston 2
Switching state, resonant cavity 8 are not connected with suction muffler in the whole expiratory phase of the pump housing, and are worked as rolling piston 2 and turned over air-breathing ending corner
After β, resonant cavity 8 is gradually connected with compression chamber 6, and in exhaust phase latter stage, resonant cavity 8 is scrolled piston 2 again and progressively closes off, so as to
Disconnect with compression chamber 6 and connecting.By reasonably switching connection and off-state between resonant cavity 8 and compression chamber 6, can be effective
Solve structure of resonant cavity noise reduction and reduce the contradiction between compressor performance, improve the work of compressor on the basis of noise is reduced
Make performance.
With reference to referring to shown in Fig. 2 to Fig. 5, in fig. 2, resonant cavity 8 is not connected with suction muffler 5 in the whole expiratory phase of the pump housing
Logical, rolling piston 2 turns over air-breathing and terminates angle beta, and now rolling piston 2 is rotated to the side away from resonant cavity 8, gets out of the way resonant cavity 8
Opening so that resonant cavity 8 is gradually connected with compression chamber 6.When rolling piston 2 turns to position shown in Fig. 3, rolling piston 2
θ angles are rotated, now rolling piston 2 gets out of the way resonant cavity 8 completely, and resonant cavity 8 is connected with compression chamber 6 completely, cold so as to buffer the pump housing
Pressure fluctuation of the matchmaker in compression stage and exhaust phase, reduces vibration of compressor, noise.When rolling piston 2 continues to rotate to θ 1
During angle, as shown in figure 4, now compressor is in the air-breathing end stage, rolling piston 2 starts gradually to cover resonant cavity 8, until complete
All standing resonant cavity 8, so as to disconnect the connection of resonant cavity 8 and compression chamber 6, now rolling piston 2 reaches position as shown in Figure 5
Put, now rolling piston 2 turns to 2 jiaos of θ.When rolling piston 2 turns to 1 jiao of θ from θ angles, resonant cavity 8 is remained and compression
6 full communicating state of chamber.
In the present embodiment, cylinder cover plate 1 is lower cover of air cylinder plate, is additionally provided with connection 8 He of resonant cavity on lower cover of air cylinder plate
The communicating passage 9 of compression chamber 6, the volume of communicating passage 9 are less than the volume of resonant cavity 8.The volume of resonant cavity 8 is more than communicating passage
9 volume, can play more preferable resonant interaction, can preferably absorb pump housing coolant in compression stage and the pressure of exhaust phase
Power is pulsed.Cylinder cover plate 1 can also be cylinder upper cover plate.
With reference to shown in Figure 1, correspondence position (specially radius R and the position on pump housing cylinder upper cover plate or lower cover
Angle ψ) place's processing resonant cavity passage, and the airtight cavity that processing is attached thereto, feeder connection diameter phi d, length l and cavity body
V is according to noise reduction Frequency Design for product.Wherein, feeder connection position angle ψ and cylinder air-breathing terminate have following relation between angle beta：0°<ψ<
180°-β；Feeder connection center radius R should be met when air-breathing terminates angle beta, and entrance is still scrolled piston end surface covering.
The set-up mode of resonant cavity 8 and communicating passage 9 is embodied in each embodiment shown in Fig. 7 to Figure 13.
With reference to shown in Figure 7, in the present embodiment, resonant cavity 8 is radially arranged along lower cover of air cylinder plate, resonant cavity 8
Sealing-plug 10 is provided with outer openings, and the upside of resonant cavity 8 is provided with communicating passage 9, and communicating passage 9 is axially extended to gas
The upper surface of cylinder lower cover.This kind of structure processing is simple and convenient, facilitates implementation.
With reference to shown in Figure 8, in the present embodiment, resonant cavity 8 is radially arranged along lower cover of air cylinder plate, resonant cavity 8
Sealing-plug 10 is provided with outer openings, and the upside of resonant cavity 8 is provided with communicating passage 9, and communicating passage 9 is obliquely extended to cylinder
The upper surface of lower cover.In the present embodiment, as communicating passage 9 is obliquely installed, therefore the length of communicating passage 9 can be reduced
Degree, can improve the length of resonant cavity 8, very long just can realize resonant cavity by communicating passage 9 without the need for what is designed resonant cavity 8
8 with the connection of compression chamber 6 and disconnection, therefore it is simpler to process structure.
With reference to shown in Figure 9, in the present embodiment, resonant cavity 8 is axially arranged along lower cover of air cylinder plate, resonant cavity 8
Sealing-plug 10 is provided with bottom opening, and the top of resonant cavity 8 is provided with communicating passage 9, and communicating passage 9 is formed with resonant cavity 8
Stepped hole, communicating passage 9 are axially extended to the upper surface of lower cover of air cylinder plate.In the present embodiment, resonant cavity 8 and communicating passage
9 are coaxially disposed, and process convenient, and can reduce manufacturing procedure, reduce processing cost.
It is with reference to shown in Figure 10, in the present embodiment, axially disposed on lower cover of air cylinder plate to extend to lower cover of air cylinder
The communicating passage 9 of the upper surface of plate, the bottom of communicating passage 9 are provided with resonance block 11, are provided with resonant cavity 8 on resonance block 11,
Resonant cavity 8 is connected with communicating passage 9.In the present embodiment, resonant cavity 8 is not set directly on lower cover of air cylinder plate, but is set
Put on resonance block 11, resonance block 11 is fixedly connected with lower cover of air cylinder plate, and communicating passage 9 is arranged on lower cover of air cylinder plate, resonance
The connection and disconnection with compression chamber 6 is realized by communicating passage 9 in chamber 8.In the present embodiment, due to block 11 and the lower cover of air cylinder of resonating
Plate separate machined, therefore the difficulty of processing of resonant cavity can be further reduced, and suitable resonance can be changed as needed
Chamber 8, so that adapt to different types of pump housing damping noise reduction demand.Resonance block 11 can be directly welded on lower cover of air cylinder plate,
The mode such as can be bolted to be fixedly connected on lower cover of air cylinder plate.
With reference to shown in Figure 11, in the present embodiment, communicating passage 9 includes the different first passage 12 and second of diameter
Passage 13, first passage 12 and second channel 13 are commonly connected to resonant cavity 8, and first passage 12 and second channel 13 extend to gas
The upper surface of cylinder lower cover.In the present embodiment, same resonant cavity 8 can arrange multiple communicating passages, identical by arranging
Or the communicating passage of different feeder connection diameters and entrance length, it is possible to achieve identical or different frequency of noise elimination, so as to full
The noise elimination of the body cylinder of sufficient different frequency needs.
With reference to shown in Figure 12, such as fruit structure permission, multiple resonant cavities can be set.In the present embodiment, connect logical
Road 9 includes the different first passage 12 of diameter and second channel 13, and resonant cavity 8 includes separating the first chamber 14 and the second chamber for arranging
15, first passage 12 is connected with the first chamber 14, and second channel 13 is connected with the second chamber 15, and first passage 12 and second channel 13 prolong
Extend the upper surface of lower cover of air cylinder plate.By arranging identical or different feeder connection diameter, entrance length and resonant cavity volume, can
To realize identical or different frequency of noise elimination, so as to meet the noise elimination demand of the multi-frequency of the pump housing, sound deadening shock absorption effect is improved.
With reference to shown in Figure 13, in the present embodiment, resonant cavity 8 extends to cylinder cover plate 1 near 3 side of pump housing cylinder
Surface, a side seal of the resonant cavity 8 away from pump housing cylinder 3.In the present embodiment, and communicating passage 9 is not provided with, but is only existed
Resonant cavity 8 is set on the cylinder cover plate 1 of the pump housing, and resonant cavity 8 directly extends to the surface of cylinder cover plate 1 from bottom, by rolling
The motion of piston 2 forms communicating passage, realizes the company of resonant cavity 8 and compression chamber 6 by the adjustment of the movement position of rolling piston 2
The adjustment that on and off is opened.Due to need not individually process communicating passage 9 in the structure, and directly can be formed by processing blind hole
The resonant cavity 8 of sealed bottom, therefore sealing-plug need not be reprocessed, processing technique and the difficulty of processing of resonant cavity is reduced, is improved
Working (machining) efficiency.
The structure that resonant cavity 8 is arranged on cylinder upper cover plate be arranged on lower cover of air cylinder plate be it is substantially the same, because
I will not elaborate for this.For the compressor with multiple cylinders, the cavity of resonant cavity 8 and communicating passage 9 can be in phases
Processing and implementation on the central dividing plate of adjacent two cylinders.
After using structure of resonant cavity of the present utility model, because the entrance of the communicating passage of resonant cavity terminates in air-breathing
Angle was just connected with compression chamber 6 to aerofluxuss latter stage, and resonant cavity 8 works in coolant compression stage and aerofluxuss early stage, can buffer pump
Pressure fluctuation of the body coolant in compression stage and exhaust phase, so that reduce vibration of compressor, noise；In addition, because in air-breathing
The communicating passage entrance of stage resonant cavity is not connected with suction muffler 5, does not result in cavity inner high voltage refrigerant return in suction muffler
Gettering efficiency is affected, impact of the conventional resonant cavity scheme clearance loss to compressor performance is greatly reduced.
Certainly, it is more than preferred implementation of the present utility model.It should be pointed out that for the ordinary skill of the art
For personnel, on the premise of without departing from this utility model ultimate principle, some improvements and modifications can also be made, these improvement
Protection domain of the present utility model is also considered as with retouching.
Claims (10)
1. a kind of rotary compressor, it is characterised in that including cylinder cover plate (1), rolling piston (2) and pump housing cylinder (3), described
There is in pump housing cylinder (3) plunger shaft, described rolling piston (2) roll and are arranged on the piston intracavity, pump housing cylinder (3)
Upper slip is provided with slide plate (4), and the one end of slide plate (4) is connected on the outer wall of the rolling piston (2), by the piston
Chamber is divided into suction muffler (5) and compression chamber (6), is provided with resonant cavity (8), pump housing cylinder (3) on cylinder cover plate (1)
On be provided with air vent (7), resonant cavity (8) are with the compression chamber (6) when the rotary compressor is in expiratory phase
It is not communicated with, connects when the rotary compressor is in compression, exhaust phase.
2. rotary compressor according to claim 1, it is characterised in that resonant cavity (8) are in the rolling piston (2)
Gradually connect with the compression chamber (6) when turning over air-breathing ending corner, the rotary compressor exhaust phase latter stage gradually with
Described compression chamber (6) disconnect connection.
3. rotary compressor according to claim 1, it is characterised in that described cylinder cover plate (1) is lower cover of air cylinder plate, institute
State and on lower cover of air cylinder plate, be additionally provided with the communicating passage (9) for connecting resonant cavity (8) and the compression chamber (6), the connection
Volume of the volume of passage (9) less than the resonant cavity (8).
4. rotary compressor according to claim 3, it is characterised in that resonant cavity (8) are along the lower cover of air cylinder plate
Be radially arranged, be provided with sealing-plug (10) at the outer openings of resonant cavity (8), the upside of resonant cavity (8) is arranged
There is the communicating passage (9), communicating passage (9) are axially extended to the upper surface of the lower cover of air cylinder plate.
5. rotary compressor according to claim 3, it is characterised in that resonant cavity (8) are along the lower cover of air cylinder plate
Be radially arranged, be provided with sealing-plug (10) at the outer openings of resonant cavity (8), the upside of resonant cavity (8) is arranged
There is the communicating passage (9), communicating passage (9) are obliquely extended to the upper surface of the lower cover of air cylinder plate.
6. rotary compressor according to claim 3, it is characterised in that resonant cavity (8) are along the lower cover of air cylinder plate
It is axially arranged, be provided with sealing-plug (10) at the bottom opening of resonant cavity (8), the top of resonant cavity (8) is arranged
There is the communicating passage (9), communicating passage (9) form stepped hole, communicating passage (9) edge with the resonant cavity (8)
Axially extend to the upper surface of the lower cover of air cylinder plate.
7. rotary compressor according to claim 3, it is characterised in that on the lower cover of air cylinder plate it is axially disposed have prolong
The communicating passage (9) of the upper surface of the lower cover of air cylinder plate is extended, the bottom of communicating passage (9) is provided with resonance block
(11), the resonant cavity (8) is provided with resonance block (11), resonant cavity (8) are connected with the communicating passage (9).
8. rotary compressor according to claim 3, it is characterised in that described communicating passage (9) include that diameter is different
First passage (12) and second channel (13), first passage (12) and the second channel (13) are commonly connected to described common
Shake chamber (8), and first passage (12) and the second channel (13) extend to the upper surface of the lower cover of air cylinder plate.
9. rotary compressor according to claim 3, it is characterised in that described communicating passage (9) include that diameter is different
First passage (12) and second channel (13), described resonant cavity (8) include separating the first chamber (14) and the second chamber (15) for arranging,
First passage (12) are connected with the first chamber (14), and second channel (13) are connected with the second chamber (15), institute
State the upper surface that first passage (12) and the second channel (13) extend to the lower cover of air cylinder plate.
10. rotary compressor according to claim 1, it is characterised in that resonant cavity (8) extend to the cylinder head
Surface of the plate (1) near pump housing cylinder (3) side, resonant cavity (8) are close away from the side of pump housing cylinder (3)
Envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620890545.9U CN206035809U (en) | 2016-08-16 | 2016-08-16 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620890545.9U CN206035809U (en) | 2016-08-16 | 2016-08-16 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035809U true CN206035809U (en) | 2017-03-22 |
Family
ID=58306626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620890545.9U Withdrawn - After Issue CN206035809U (en) | 2016-08-16 | 2016-08-16 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151034A (en) * | 2016-08-16 | 2016-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary compressor |
| CN110892158A (en) * | 2017-07-27 | 2020-03-17 | 富士通将军股份有限公司 | Rotary compressor |
-
2016
- 2016-08-16 CN CN201620890545.9U patent/CN206035809U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151034A (en) * | 2016-08-16 | 2016-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary compressor |
| CN110892158A (en) * | 2017-07-27 | 2020-03-17 | 富士通将军股份有限公司 | Rotary compressor |
| US11225971B2 (en) | 2017-07-27 | 2022-01-18 | Fujitsu General Limited | Rotary compressor |
| CN110892158B (en) * | 2017-07-27 | 2022-03-04 | 富士通将军股份有限公司 | Rotary compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20200814 |
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| AV01 | Patent right actively abandoned |