CN1712720A - By-pass valve assembly of rotary displacement compressor - Google Patents
By-pass valve assembly of rotary displacement compressor Download PDFInfo
- Publication number
- CN1712720A CN1712720A CN 200410019718 CN200410019718A CN1712720A CN 1712720 A CN1712720 A CN 1712720A CN 200410019718 CN200410019718 CN 200410019718 CN 200410019718 A CN200410019718 A CN 200410019718A CN 1712720 A CN1712720 A CN 1712720A
- Authority
- CN
- China
- Prior art keywords
- valve
- bypass
- valve assembly
- volume variable
- pass hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to a by-pass valve assembly of a positive-displacement rotary compressor. The main structure of the invention comprises a valve board moving with pressure difference to open and close a by-pass hole, a valve board guide mounted on the joint face between the by-pass hole and the assembling space holding the valve board inside it and guiding the valve board to move to thickness direction, a fixing member communicated on an inner peripheral surface at the front of the valve guide making the valve board and the valve guide modularized together.
Description
Technical field
The present invention relates to the bypass valve of compressor, more particularly, relate to the bypass valve assembly of the rotary compressor of volume-variable.
Background technique
In general, compressor is the machine of fluids such as compression refrigerant gas.According to the fluid compress mode, compressor can be divided into rotary compressor, reciprocal compressor and scroll compressor etc.
Rotary compressor possesses mechanism portion and compression mechanical part a casing inside, and mechanism portion and compression mechanical part are combined in the two ends of a running shaft respectively, the rotating force of mechanism portion is sent on the compression mechanical part, thus compression refrigerant in compression mechanical part.
Such rotary compressor is applicable on the air bells conditioners such as most of air conditioner.And nearest trend shows that along with the multifunction of air conditioner, the demand that can reduce the volume variable rotating compressor of power consumption and raising compression efficiency increases gradually.
Compressor in the past, the main rotation number of control compressor that adopts changes compressor capacity.But this need possess complicated controller (as changer system) etc., so the shortcoming that exists manufacture cost to rise.
Utilize bypass valve assembly stably to change compressor capacity and release cheap volume variable rotating compressor in order to solve above-mentioned shortcoming, to have used in the past.
Fig. 1 demonstrates the structure of volume variable rotating compressor in the past, and Fig. 2 is the air cylinder structure figure that in the past volume variable rotating compressor possesses bypass valve assembly.
Fig. 3 and Fig. 4 demonstrate bypass valve assembly structure and the operating state of Fig. 2, and Fig. 5 and Fig. 6 are that simple displaying goes out the cold media air flow path of volume variable rotating compressor in the past.
As shown in the figure, the main structure of volume variable rotating compressor in the past includes casing (10), mechanism portion and compression mechanical part.Wherein, casing (10) forms confined space in inside; Mechanism portion is arranged on the inner side of casing (10) and rotating force is provided; The rotating force compression refrigerant that compression mechanical part utilizes mechanism portion to provide.
Mechanism portion is to be made of stator (11), rotor (12) and running shaft (13).Stator (11) is fixedly mounted on the inside of casing (10); Rotor (12) is rotatably installed in the inside of stator (11); Running shaft (13) rotatably is combined on the axle center of rotor (12) and forms one, and running shaft (13) bottom is formed with eccentric part.
The main structure of compression mechanical part includes cylinder (14), main bearing (15) and auxiliary bearing (16), running shaft (13), rolling piston (17), outlet valve (19) and baffler (20).Wherein, cylinder (14) ringwise and be arranged on the inside of casing (10); Main bearing (15) and auxiliary bearing (16) cover the left and right sides of cylinder (14), form the inner space together; Running shaft (13) is pressed into rotor (12) lining, and is supported and transmit rotating force by main bearing (15) and auxiliary bearing (16); Rolling piston (17) is combined on the eccentric part of running shaft (13) and rotation, compression refrigerant when rotating in the inner space of cylinder (14); Outlet valve (19) is combined near the front end of main bearing (15) central authorities to open and close exhaust port (15a), controls the discharge of cold media air from the cylinder pressing chamber thus; Baffler (20) possesses the resonant chamber that can hold outlet valve (19), and is arranged on the outer side surface of main bearing (15).
Blade (18) radially protrudes and is rotatably installed in the cylinder, touch scrolling piston (17) thus outer circumferential face the cylinder interior separated by spaces is become suction chamber (S) and pressing chamber (C).Form promising blade accepting groove (18a) in the inside of cylinder (a 14) side in conjunction with blade (18).Possess to have in the inside of blade accepting groove (18a) and make the spring (18b) of blade (18) Elastic Contact on rolling piston (17).
In addition, inside one side of cylinder (14) is formed with the intakeport (14a) that refrigerant is flowed into, and is formed with the relief opening (14b) that the refrigerant after making compression is discharged along circumferencial direction phase root piece accepting groove (18a) at the opposite side of intakeport (14a).
On intakeport (14a), be combined with the sucking pipe (21) that is connected with the gas-liquid separator (not shown) of casing (10) sidepiece, be provided with the outlet pipe (22) that pressurized gas is discharged to the outside at the upside of casing (10).
And, be formed with the by-pass hole (14c) of a part of bypass that makes pressurized gas in intakeport (14a) opposite of cylinder (a 14) side, possessing at the outlet side of by-pass hole (14c) has the installing space of circular cross-sectional shape portion (14d).Below the bypass valve assembly that will illustrate (24) is installed in installing space portion (14d).
Meanwhile, sucking pipe (21) and outlet pipe (22) are connected with the 1st bypass tube (22a) and the 2nd bypass tube (21a) respectively.(21a 22a) connects the connecting tube (31) that is communicated with by-pass hole (14c) by three-way valve (30) to described each bypass tube.
Described three-way valve (30) optionally is communicated with connecting tube (31) according to the control of control device (32) with the 1st bypass tube (22a) or the 2nd bypass tube (21a).
The main structure of bypass valve assembly (24) includes packing ring (25), valve thin slice (26), valve plate (27), valve guiding (28) and valve spring (29).Wherein, packing ring (25) is close to and prevents on the junction plane of by-pass hole (14c) and installing space portion (14d) that cold media air from leaking; Valve thin slice (26) is close to packing ring (25) and goes up the formation valve face; Valve plate (27) optionally is close on valve thin slice (26) valve face opens or closes by-pass hole (14c), to regulate whether bypass of cold media air; Valve guiding (28) guides moving of valve plate (27) when valve plate (27) is accommodated in inside; Valve spring (29) elastic support and standing valve guiding (28).
Packing ring (25) and valve thin slice (26) are formed with the corresponding circular plate shape of diameter with installing space portion (14d), and in the central portion be formed with respectively the through hole that is communicated with by-pass hole (14c) (25a, 26a).
Valve guiding (28) is made of valve body (28a) and a plurality of guide element (28b).Valve body (28a) has the hollow cylinder shape that is communicated with by-pass hole (14c), forms the attachment face that valve plate (27) is installed at the one end; Guide element (28b) is long than valve body (28a), and whole across a certain distance mutually formation around valve body (28a).So, valve plate (27) can move along thickness direction between the inner peripheral surface of each guide element (28b), can discharge to connecting tube (31) by the air vent (28c) between each guide element (28b) at the cold media air of pressing chamber (C) lining of cylinder (14) compression.
In addition, after gas via-hole (28d) inflow of cold media air by valve body (28a) central part of connecting tube (31) supply, exert pressure, it is close on the valve thin slice (26) to valve plate (27).
Valve spring (29) is made of pressure spring, and the one end is fixedly installed on spring groove (29a) lining on installing space portion (14d) inner peripheral surface, elastic support valve plate (27).At this moment, it is big than other position diameter to be combined in the end of valve spring (29) of spring groove (29a) lining.
So, possess the rotary compressor in the past of said structure, along with turn-on power in the mechanism portion, running shaft (13) rotation is connected rolling piston (17) on the running shaft (13) at eccentric rotation in the inner space of cylinder (14) and compression refrigerant gas.Like this, compressed high pressure refrigerant gas process casing (10) is inner is discharged in the freezing cycle device by outlet pipe (22).
During the compressor primary starting, as shown in Figure 5, when needing big refrigerating capacity (startup operation mode), under the 2nd bypass tube (21a) closing state that sucking pipe (21) branch comes out, control device (32) is regulated three-way valve (30), and the 1st bypass tube (22a) is communicated with connecting tube (31).
At this moment, again supply to cylinder one side by the part in the high pressure refrigerant gas of outlet pipe (22) discharge by the 1st bypass tube (22a), and exert pressure to the valve plate (27) of bypass valve assembly (24) by the high pressure refrigerant gas that the 1st bypass tube (22a) flows into, valve plate (27) is close on the valve face of valve thin slice (26), closes by-pass hole (14c) thus.
So bypass valve assembly (24) can not leak the cold media air in the compression of the pressing chamber (C) of cylinder (14), and make cold media air pass through relief opening (15a) all and casing (10) inside is discharged to freezing cycle device by outlet pipe (22).
On the contrary, when compressor operation is stable, when promptly needing relatively little refrigerating capacity (normal operation pattern), as shown in Figure 6, under the 1st bypass tube (22a) closing state that outlet pipe (22) branch comes out, control device (32) is regulated three-way valve (30), and the 2nd bypass tube (21a) and connecting tube (31) are communicated with.
At this moment, the part of the cold media air that the pressing chamber (C) in cylinder (14) compresses is discharged to the 2nd bypass tube (21a) by bypass valve assembly (24), so reduce from the amount of cylinder (14) pressing chamber (C) to the cold media air of casing (10) discharge, the refrigerating capacity of freezing cycle device descends.
At this moment, the low pressure refrigerant gas that flows into by sucking pipe (21) flow into the valve plate (27) of the 2nd bypass tube (21a) to bypass valve assembly (24) that comes out from sucking pipe (21) branch and applies certain pressure, but the pressure that is applied to valve plate (27) is low than the pressure of pressing chamber (C), so valve plate (27) is opened by-pass hole (14c) in the time of valve guiding (28) side shifting.
But, possessing the bypass valve assembly in the past (24) of said structure, complex structure not only also will be with each component parts of bolts assemblies, so there is the low shortcoming of manufacturing efficiency.
In addition, in the bypass valve assembly in the past (24), valve plate (27) contacts by the face with valve thin slice (26) valve face and closes or open by-pass hole (14c).Therefore, such structure has the worry that cold media air leaks, and the dead volume that valve thin slice (26) and packing ring (25) occur, has the shortcoming that compressor performance is descended.
Summary of the invention
In order to solve the shortcoming of above-mentioned prior art, the object of the present invention is to provide by the bypass valve modularization and can simplify the bypass valve assembly that can reduce the volume variable rotating compressor of dead volume when cold media air that assembling procedure is enhanced productivity and after preventing to compress leaks.
The bypass valve assembly of volume variable rotating compressor provided by the invention, be installed in the installing space that the by-pass hole of the bypass compression cold media air that forms with cylinder interior space one side is communicated with, selectivity opens and closes the capacity of by-pass hole with the change rotary compressor.
The main structure of related bypass valve assembly includes valve plate, valve guiding and fixed component.Wherein, valve plate utilizes pressure difference to move, and opens and closes by-pass hole; Valve guiding is close on the junction plane that is installed in by-pass hole and installing space portion, and accommodates valve plate in inside and guide valve plate that it is moved along thickness direction; Fixed component is combined in the inner peripheral surface of valve guide front end, makes valve plate and the valve modularization together that leads.
In addition, fixed component is the snap ring of energy radial contraction and resiliently deformable.
In order to prevent that valve plate breaks away from, the inner peripheral surface diameter of snap ring is little than the diameter of valve plate.
Meanwhile, snap ring is housed in the engagement groove corresponding with the snap ring width that valve guide front end inner peripheral surface forms and the elasticity combination.
The installation position of the snap ring of installing in engagement groove is a tabular surface.
On the junction plane of by-pass hole and installing space portion, to protrude in order being communicated with and to form and have a valve contacting part that makes the surface of contact that valve plate is close to by-pass hole.
On the valve contacting part, be formed with and prevent and the interactional step part of fixed component height.
Meanwhile, in order to contact with the valve plate line, the surface of contact of valve contacting part forms curved surface.
In addition, in the spring groove of installing space portion inner peripheral surface, fixedly install the valve spring of elastic support and standing valve guiding.
In valve guiding rear end whole protrude form make valve spring follow the valve guiding modular together be combined in simultaneously on the valve spring in conjunction with projection.
The bypass valve assembly of volume variable rotating compressor of the present invention can be simplified assembling procedure by the bypass valve modularization, enhances productivity, and prevents from can reduce dead volume when cold media air from leaking, and can improve compressor performance.
Description of drawings
Fig. 1 is a volume variable rotating compressor structural drawing in the past.
Fig. 2 is the air cylinder structure figure that in the past volume variable rotating compressor possesses bypass valve assembly.
Fig. 3 and Fig. 4 are bypass valve assembly structure and the operating state figure of Fig. 2.
Fig. 5 and Fig. 6 are the sketches of volume variable rotating compressor cold media air flow path in the past.
Fig. 7 is the structural drawing that possesses the rotary compressor cylinder of bypass valve assembly of the present invention.
Fig. 8 and Fig. 9 are the bypass valve assembly structural drawing of Fig. 7.
Figure 10 is the bypass valve assembly operating state figure of Fig. 7.
The symbol description of accompanying drawing major component:
24: cylinder, 24c: by-pass hole,
24d: installing space portion, 24e: the valve contacting part,
24f: the step part, 31: connecting tube,
34: bypass valve assembly, 35: snap ring,
36: valve plate, 37: the valve guiding,
37a: valve body, 37b: guide element,
37c: air vent, 37d: exhaust port,
37e: engagement groove, 37f: in conjunction with projection,
38: valve spring, 38a: spring groove.
Embodiment
Specific embodiments of the invention are described with reference to the accompanying drawings.
Fig. 7 is the air cylinder structure figure that possesses the rotary compressor of bypass valve assembly of the present invention, and Fig. 8 and Fig. 9 are the bypass valve assembly structural drawing of Fig. 7.
In addition, Figure 10 is the bypass valve assembly operating state figure of Fig. 7.
In explanation process of the present invention, for clear and definite main idea of the present invention is omitted for the explanation of disclosed function and formation.
As shown in the figure, the inner side of cylinder (24) that possesses the rotary compressor of bypass valve assembly of the present invention is formed with the blade accepting groove (28a) that makes blade (28) combination, and possess in the inside of blade accepting groove (28a) and spring to be arranged (28b), make blade (18) Elastic Contact on rolling piston (27).Blade (28) is to radially protruding and rotatably installing, and the outer circumferential face of touch scrolling piston (27) is separated into suction chamber and pressing chamber to the inner space of cylinder (24) thus.
In addition, inside one side of cylinder (24) is formed with the intakeport (24a) that refrigerant is flowed into, and is formed with the relief opening (24b) that the refrigerant after making compression is discharged along circumferencial direction phase root piece accepting groove (28a) at the opposite side of intakeport (24a).
On intakeport (24a), be combined with the sucking pipe (not shown) that is connected with the gas-liquid separator (not shown) of casing (not shown) sidepiece, be combined with the outlet pipe (not shown) that the cold media air after making compression is discharged to the outside at the upside of casing (10).
And, be formed with the by-pass hole (24c) of a part of bypass that makes compression refrigerant gas in the opposite of cylinder (24) intakeport (24a) side, possessing at the outlet side of by-pass hole (24c) has the installing space in toroidal cross section portion (24d).Bypass valve assembly of the present invention (34) is installed in the installing space portion (24d), and is illustrated below.
Meanwhile, sucking pipe and outlet pipe branch out the 1st bypass tube and the 2nd bypass tube (not shown) separately.Described each bypass tube is connected by on three-way valve (not shown) and the connecting tube (31) that by-pass hole (24c) is communicated with
At this moment, described three-way valve optionally is communicated with connecting tube (31) according to the control of control device (not shown) with the 1st bypass tube (22a) or the 2nd bypass tube (21a).
Bypass valve assembly of the present invention (34) includes valve plate (36), valve guiding (37) and fixed component.Wherein, valve plate (36) utilizes pressure difference to move, to open and close by-pass hole (24c); Valve guiding (37) is close on the junction plane that is installed in by-pass hole (24c) and installing space portion (24d), accommodates valve plate (36) in inside and guides valve plate (36) that it is moved to thickness direction; Fixed component is combined in the inner peripheral surface of valve guiding (37) front end, makes described valve plate (36) and valve guiding (37) modularization together.
Valve guiding (37) is made of valve body (37a) and a plurality of guide element (37b).Valve body (37a) is communicated with by-pass hole (24c), is the hollow cylinder shape, and at one end is formed with the attachment face that valve plate (36) is installed; Guide element (37b) is long than valve body (37a) length, and whole across a certain distance mutually formation around valve body (37a).So, valve plate (36) with circular plate shape of certain diameter can be arranged between the inner peripheral surface of each guide element (28b) and can move along thickness direction, and the cold media air of cylinder (14) pressing chamber (C) compression can be discharged to connecting tube (31) through by-pass hole (24c) by the air vent (37c) between each guide element (37b).
In addition, the cold media air of supplying with from connecting tube (31) by hole (37d) by the gas that forms on valve guiding (37) valve body (37a) central part flows into the back and applies pressure to by-pass hole (24c) direction to valve plate (36).
Described fixed component is the snap ring (35) of energy radial contraction and resiliently deformable, and is formed with the engagement groove (37e) corresponding with snap ring (35) width at valve guiding (37) front end inner peripheral surface.Snap ring (35) is housed in engagement groove (37e) lining and elasticity combination.
In addition, the inner peripheral surface diameter of snap ring (35) is little than the diameter of valve plate (36).According to such structure, the snap ring (35) of valve guiding (37) front end combination can prevent that valve plate (36) is installed to the inner back of valve guiding (37) and breaks away to the outside.
The installation position that is installed in the snap ring (35) of engagement groove (37e) lining forms tabular surface.According to such structure, snap ring (35) is close to the front end of valve guiding (37), prevents to follow when valve plate (36) breaks away from valve guiding (37) to form modularization together.So build-up member quantity reduces, simplify assembly process, can enhance productivity.
And possessing on the junction plane of by-pass hole (24c) and installing space portion (24d) has in order to be communicated with by-pass hole (24c) and to protrude formation, and makes valve plate (36) be close to the valve contacting part (24e) of surface of contact.Be formed with on the valve contacting part (24e) and prevent and the highly interactional step part of snap ring (35).And for the line with valve plate (36) contacts, the surface of contact of valve contacting part (24e) forms curved surface.
According to such structure, after valve contacting part (24e) is installed on the modular bypass valve assembly (34), be positioned at the inside of valve guiding (37), there is not mutual effect of altitude with snap ring (35).So, go up switching by-pass hole (24c) by the line contact at valve contacting part (24e) according to the valve plate (36) that pressure difference moves, can reduce the dead volume because of using packing ring and valve thin slice to occur in the past thus, the cold media air after preventing from simultaneously to compress leaks, and can improve compressor performance.
In addition, be installed as the valve spring (38) of elastic support valve guiding (37) at an end of valve guiding (37).Valve spring (38) constitutes with pressure spring, and the one end is fixedly installed on spring groove (38a) lining of installing space portion (24d) inner peripheral surface, elastic support valve guiding (37).The end of the valve spring (38) of spring groove (38a) lining combination is big than other position diameter.
In valve guiding (37) rear end whole protrude be formed with set size in conjunction with projection (37f), and valve spring (38) is by forming with valve guiding (37) modularization together in conjunction with projection (37f).
The rotary compressor method of operation that possesses the bypass valve assembly (34) of said structure follows structure in the past identical, states so here no longer endure.
As mentioned above, for example understand possible embodiments of the present invention, but protection scope of the present invention not being limited in the aforesaid specific embodiment, be that the basis makes an explanation with the scope of claim record.
Claims (10)
1, a kind of bypass valve assembly of volume variable rotating compressor, be installed in the bypass compression installing space that afterwards by-pass hole of cold media air is communicated with that forms with cylinder interior space one side, selectivity opens and closes by-pass hole to change the capacity of rotary compressor, it is characterized in that
Structure includes valve plate, valve guiding and fixed component; Valve plate utilizes pressure difference to move, and opens and closes by-pass hole; Valve guiding is close on the junction plane that is installed in by-pass hole and installing space portion, and accommodates valve plate in inside and guide valve plate that it is moved along thickness direction.
2, the bypass valve assembly of volume variable rotating compressor according to claim 1 is characterized in that, fixed component is the snap ring of energy radial contraction and resiliently deformable.
3, the bypass valve assembly of volume variable rotating compressor according to claim 2 is characterized in that, breaks away from order to prevent valve plate, and the inner peripheral surface diameter of snap ring is little than the diameter of valve plate.
According to the bypass valve assembly of claim 2 or 3 described volume variable rotating compressors, it is characterized in that 4, snap ring is housed in the engagement groove corresponding with the snap ring width that valve guide front end inner peripheral surface forms and the elasticity combination.
5, the thin part of the bypass valve of volume variable rotating compressor according to claim 4 is characterized in that, the installation position that snap ring is installed in engagement groove is a tabular surface.
6, the bypass valve assembly of volume variable rotating compressor according to claim 1, it is characterized in that, also include on the junction plane of by-pass hole and installing space portion to protrude and form and make valve plate be close to the valve contacting part of surface of contact in order to be communicated with by-pass hole.
7, the bypass valve assembly of volume variable rotating compressor according to claim 6 is characterized in that, is formed with to prevent and the interactional step part of fixed component height on the valve contacting part.
8,, it is characterized in that the valve contacting part forms curved surface with the surface of contact that the valve plate line contacts according to the bypass valve assembly of claim 6 or 7 described volume variable rotating compressors.
9, the bypass valve assembly of volume variable rotating compressor according to claim 1 is characterized in that, the valve spring elastic support that the valve guiding is installed by the spring groove that fixedly installs at the space portion inner peripheral surface is fixed.
10, the bypass valve assembly of volume variable rotating compressor according to claim 1 is characterized in that, in valve guiding rear end whole protrude form make valve spring follow the valve guiding modular together be combined in simultaneously on the valve spring in conjunction with projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100197181A CN100424352C (en) | 2004-06-21 | 2004-06-21 | By-pass valve assembly of rotary displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100197181A CN100424352C (en) | 2004-06-21 | 2004-06-21 | By-pass valve assembly of rotary displacement compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1712720A true CN1712720A (en) | 2005-12-28 |
| CN100424352C CN100424352C (en) | 2008-10-08 |
Family
ID=35718473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100197181A Expired - Fee Related CN100424352C (en) | 2004-06-21 | 2004-06-21 | By-pass valve assembly of rotary displacement compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100424352C (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2956555B2 (en) * | 1995-12-05 | 1999-10-04 | 松下電器産業株式会社 | Scroll gas compressor |
| US5807081A (en) * | 1997-01-06 | 1998-09-15 | Carrier Corporation | Combination valve for screw compressors |
| JP2000303982A (en) * | 1999-04-22 | 2000-10-31 | Hitachi Ltd | Scroll compressor |
| FR2830291B1 (en) * | 2001-09-28 | 2004-04-16 | Danfoss Maneurop S A | SPIRAL COMPRESSOR, OF VARIABLE CAPACITY |
-
2004
- 2004-06-21 CN CNB2004100197181A patent/CN100424352C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100424352C (en) | 2008-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1283923C (en) | Double volume ratio whiral machinery | |
| CN1993555A (en) | Capacity variable device for rotary compressor and driving method of air conditioner having the same | |
| CN1475673A (en) | Turbo machine having dual volume ratio | |
| CN1865705A (en) | Scroll compressor | |
| CN1309959C (en) | Displacement changing device of vortex compressor | |
| CN101052808A (en) | Capacity varying type rotary compressor | |
| CN1993553A (en) | Capacity variable type rotary compressor and driving method thereof | |
| CN1289820C (en) | Compressor | |
| CN1651768A (en) | Scroll compressor | |
| CN1608173A (en) | Hermetic compressor | |
| CN1904369A (en) | Multisection rotating type compressor and airconditioner therefor | |
| CN1712720A (en) | By-pass valve assembly of rotary displacement compressor | |
| CN105756898A (en) | Vacuum pump | |
| CN1757920A (en) | Hermetically sealed type orbiting vane compressor | |
| CN1904370A (en) | Multisection rotating type compressor | |
| CN208330741U (en) | The Horizontal vortex refrigeration compressor adjusted with interior volume specific ratio | |
| CN200978805Y (en) | Concentric ring drum-type compressor | |
| CN107829930B (en) | Automobile air conditioner compressor | |
| CN1712710A (en) | By-pass valve assembly of rotary and capacity-variable compressor | |
| CN1924358A (en) | Eddy liquid machinery | |
| CN1712712A (en) | By-pass valve combination of rotary and capacity-variable compressor | |
| CN1955481A (en) | Variable capacity vortex compressor | |
| CN1566705A (en) | Capacity changing device for vortex type compressor | |
| CN1080389C (en) | Fluid compressor | |
| CN1712709A (en) | By-pass valve combination of rotary and capacity-variable compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20110621 |