CN1904370B - Multisection rotating type compressor - Google Patents
Multisection rotating type compressor Download PDFInfo
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- CN1904370B CN1904370B CN2005100146184A CN200510014618A CN1904370B CN 1904370 B CN1904370 B CN 1904370B CN 2005100146184 A CN2005100146184 A CN 2005100146184A CN 200510014618 A CN200510014618 A CN 200510014618A CN 1904370 B CN1904370 B CN 1904370B
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Abstract
A multistage rotary compressor comprises a casing forming a closed space inside, a drive element disposed inside the casing, several compression elements for compressing the refrigerant, a guide element connected with the above several compression elements for guiding selectively the refrigerant discharged from one compression element and a control element mounted in the above guide element for compressing the above several compression elements, or guiding the refrigerant discharged from compression elements to the next compression element for recompressing or making a part of compression elements race rotation.
Description
Technical field
The present invention relates to a kind of compressor, particularly a kind of multisection rotating type compressor.
Background technique
Compressor is: utilize the power transmit from power generating apparatus such as motor, air or refrigerant or other special gas are exerted pressure, with its boil down to working gas, thereby improve the device of pressure.Compressor is widely used in every field.Here, compressor is divided into positive displacement compressor and turbocompressor according to the mode of compressing.Positive displacement compressor (positive displacement compressor) is the mode that reduces boost pressure by volume.Turbocompressor (turbo compressor) is can be converted to the mode that pressure can compress by the motion with gaseous state.Rotary compressor in the positive displacement compressor mainly is applicable to air conditioner.Because therefore the function of air conditioner variation has day by day recently also proposed the requirement of volume-variable to rotary compressor.
What the refrigerant of rotary compressor utilized always is the refrigerant that comprises the chlorine of CFC system.But above-mentioned refrigerant can damage the ozone layer, and becomes the reason of global warmingization, so its use begins to be restricted.Therefore, research and develop over against the alternative refrigerant that can replace existing refrigerant at present.Refrigerant can use carbon dioxide as an alternative.But, except will studying the alternative refrigerant that can tackle the global warming problem, also to study the problem that whether can improve machine performance efficient.This be because, a big chunk of electric energy is to use fossil pigment to obtain, the carbon dioxide that produces during the burning of fossil pigment is the principal element of global warmingization exactly.Therefore, in the compressor of the heart that can be called refrigeration system, how also to consider naturally and will be applicable in the past compressor the harmless alternative refrigerant of earth environment, and also can lossy problem on the performance.To possess the multisection rotating type compressor that a plurality of compressing members are arranged here, be exactly volume-variable, can utilize an example of the compressor that substitutes refrigerant.
Common multisection rotating type compressor is to be contained in the seal container and to constitute sucking driving element that refrigerant compresses a plurality of compressing members of discharging the back and be used to drive above-mentioned compressing member separately.In the above-mentioned compressing member, the running shaft that rotates by the effect of above-mentioned driving element is formed with a plurality of eccentric cams.Rotary-piston inserts the outer circumferential face that is fixed in each eccentric cam.Above-mentioned rotary-piston is positioned at cylinder interior, and roller bearing moves when contacting with the internal diameter of cylinder.The blade that cylinder interior is contacted with rotary-piston is divided into induction chamber and pressing chamber.Above-mentioned driving element is to be made of the motor that is used to rotate running shaft, and together is contained in the seal container with compressing member.In the above-mentioned common multisection rotating type compressor,, carry out suction, compression, the discharge work of refrigerant continuously along with rotary-piston contacts with the internal diameter of cylinder.If owing to produce too much load, need big capacity (below, be called power mode), then only need drive compression element separately.At this moment, the capacity of compressor is the summation of the refrigerant of each compressing member discharge.If, need reach the effect (below, be called save mode) of low capacity and power saving because load reduces, then in driving element, use to possess the anti-phase motor that the controlling and driving device is arranged, realize the volume-variable of refrigerant by velocity variations.Perhaps, after blade retreats, utilize stator blades such as part, eliminate the separation of induction chamber and pressing chamber, so rotary-piston can not compression refrigerant, but dally (idling).
The structure of above-mentioned common rotary compressor and operation method there are the following problems point.
The first, under save mode, retreat in the mode of stator blade, need possess the space that members such as part are installed, and can increase production process.
The second, because part applies impact to blade repeatedly, therefore have the possibility of injured surface, and can cause the reliability problem of wearing and tearing or generation foreign matter etc. through after a while.
The 3rd, use as driving element under the situation of anti-phase motor, because anti-phase motor generally is on the high side, therefore can cause the rising of fabricating cost.So, be necessary to use cheap constant-seed motor to realize volume-variable.
Summary of the invention
The present invention proposes in order to solve the above problems.Therefore, the purpose of this invention is to provide: can make each compressing member independent operating separately, therefore can embody the multisection rotating type compressor of multiple volume change.
In addition, the purpose of this invention is to provide: under the power mode of the jumbo compression volume of needs,, can make the multisection rotating type compressor of compression volume maximization by a plurality of compressing members are all used.
To achieve these goals, comprising following components according to multisection rotating type compressor of the present invention constitutes: the inner housing that forms confined space; Be arranged at the housing inboard, produce the driving element of driving force; The driving force of utilizing above-mentioned driving element to transmit, a plurality of compressing members of compression refrigerant; Connect above-mentioned a plurality of compressing member, the refrigerant that will discharge from compressing member optionally is directed to the induction element of other compressing member; Be installed on above-mentioned induction element, above-mentioned a plurality of compressing member is compressed separately, or make the refrigerant of from compressing member, discharging be directed to next compressing member to recompress, perhaps make the control unit of a part of compressing member idle running.
As mentioned above, has following effect: can be according to the operating conditions of compressor, with the discharge capacity of various variation refrigerant such as power mode, save mode and idle mode according to the present invention.
In addition, effect of the present invention is: possess control unit is arranged, and do not use the anti-phase motor of high price, and be to use constant-seed motor at a low price to embody power mode and save mode, realize volume change, therefore can reduce fabricating cost.
In addition, the refrigerant with one section compression among the present invention recompresses again, therefore can reach higher head pressure and improve volumetric efficiency.And, during recompression, utilization be the refrigerant of one section compression, therefore can reduce the leakage of head pressure to enclosure interior.Moreover, can also significantly reduce to be delivered to the heat of the low temperature refrigerant of suction side.
In addition, effect of the present invention is: with respect to the mode that retreats stator blade under save mode, the present invention does not need other member and installing space, and production process is also very simple.And, owing to do not need to be used to retreat the part (piece) of stator blade, therefore do not have the problem of wearing and tearing and generation foreign matter etc., thereby can improve the reliability of product.
In addition, effect of the present invention is: under save mode, also all use a plurality of compressing members, so the efficient of motor and compressor will improve all.And, with respect to power mode, be with the recompression of the refrigerant of one section compression, therefore, required drive seldom, thereby have power savings.
Description of drawings
Fig. 1 is the sectional drawing that shows according to the 1st embodiment's of the present invention multisection rotating type compressor.
Fig. 2 is the sectional drawing that demonstration is flowed according to the refrigerant under the power mode of the 1st embodiment's of the present invention multisection rotating type compressor.
Fig. 3 is the sectional drawing that flows according to the refrigerant under the save mode of the 1st embodiment's of the present invention multisection rotating type compressor.
Fig. 4 is the sectional drawing that flows according to the refrigerant under the idle mode of the 1st embodiment's of the present invention multisection rotating type compressor.
Fig. 5 is the sectional drawing that shows according to the 2nd embodiment's of the present invention multisection rotating type compressor.
The critical piece description of reference numerals
100: housing 200: driving element
400: the 2 compressing members of 300: the 1 compressing members
500: 510: the 2 suction pipes of induction element
520: 525: the 1 control valves of case
Connected 540: the 1 suction pipes of stream in 530: the 1
550: the 2 branch's streams of 545: the 2 control valves
Control valve connected stream in 560: the 2 in 555: the 3
570: the 1 branch's streams
Embodiment
Below, the embodiment shown in is elaborated to foundation multisection rotating type compressor of the present invention with reference to the accompanying drawings.
Fig. 1 is the sectional drawing that shows according to the 1st embodiment's of the present invention multisection rotating type compressor.
As shown in the figure, the inner housing 100 that forms confined space; Be arranged at housing 100 inboards, produce the driving element 200 of driving force; Be connected in above-mentioned driving element 200, the 1st, 2 compressing members 300,400 of compression refrigerant; Connect above-mentioned the 1st, 2 compressing members 300,400, the refrigerant that will discharge from the 1st compressing member 300 optionally is directed to the induction element 500 of the 2nd compressing member 400; Be installed on above-mentioned induction element 500, compress above-mentioned the 1st, 2 compressing members 300,400 separately, maybe the refrigerant that will discharge from the 2nd compressing member 400 is directed to the 1st compressing member 300 and recompresses the control unit that a part of compressing member is dallied.
The inside of above-mentioned housing 100 has certain containing space, and perforation is provided with discharge tube 110 and the 1st, 2 suction pipes 540,510.
Above-mentioned driving element 200 is to be made of following components: be fixed in the inside of housing 100, the stator 210 of power supply is provided from the outside; In the inside of stator 210, an at interval fixed gap setting, rotor rotated 220 by with the interaction of said stator 210 time; Combine with rotor 220 one, driving force is delivered to compressing member 300,400, and possess the running shaft 230 of 2 eccentric parts.
Here, driving element 200 preferably is made of constant-seed motor.Because constant-seed motor is cheap with respect to the anti-phase motor with controlling and driving device.
Above-mentioned compressing member is to be made of the 1st compressing member 300 and the 2nd compressing member 400.Above-mentioned the 1st compressing member 300 is to be made of following components: form annular, be arranged at the 1st cylinder 310 of the inside of housing 100; Cover the both sides up and down of above-mentioned the 1st cylinder 310, together constitute the 1st inner space 330, and to the upper bearing 320 and the intermediate bearing 350 of radial direction supporting rotating shaft 230; Be inserted in the upside eccentric part of running shaft 230, the 1st rotary-piston 340 of compression refrigerant when rotating by the 1st inner space 330 at the 1st cylinder 310; In order to be crimped on the outer circumferential face of the 1st rotary-piston 340, and can be incorporated into the 1st cylinder 310 to what radial direction moved, the 1st inner space 330 of above-mentioned the 1st cylinder 310 is divided into separately the 1st blade (not prompting among the figure) of the 1st suction chamber and the 1st pressing chamber; The front end that is incorporated into the 1st tap hole 360 that is communicated with the 1st pressing chamber that is formed at above-mentioned upper bearing 320 to be opened/closed, adjusting is from the 1st expulsion valve 370 of the discharge of the refrigerant of the 1st pressing chamber discharge.
The 2nd compressing member 400 is to be made of following components: form annular, be positioned at above-mentioned the 1st cylinder 310 downsides, the 2nd cylinder 410 that contacts with above-mentioned intermediate bearing 350; Be incorporated into the 2nd cylinder 410 above, together constitute the 2nd inner space 430, and support the lower bearing 450 of above-mentioned running shaft 230 to radial direction and axle direction; The rotatable downside eccentric part that is incorporated into above-mentioned running shaft 230 is positioned at the 2nd inner space 430 of above-mentioned the 2nd cylinder 410, the 2nd rotary-piston 440 that compresses; In order to be crimped on the outer circumferential face of the 2nd rotary-piston 440, and can be incorporated into the 2nd cylinder 410 to what radial direction moved, the 2nd inner space 430 of above-mentioned the 2nd cylinder 410 is divided into separately the 2nd blade (not prompting among the figure) of the 2nd suction chamber and the 2nd pressing chamber; The 2nd expulsion valve 470 that is incorporated into the front end of the 2nd tap hole 460 that is communicated with the 2nd pressing chamber that is formed at above-mentioned lower bearing 450 1 sides to be opened/closed.The present invention can also be deformed into compressed first the 2nd compressing member of refrigerant is formed one, and the 1st compressing member that will compress once more forms a plurality of.
In addition, the volume of the volume of the 1st inner space 330 of the 1st cylinder 310 and the 2nd inner space 430 of the 2nd cylinder 410 can be identical, but for more accurate volume change, preferably make the volume in two spaces form different sizes.
Above-mentioned induction element 500 is to be made of following components: the 1st suction pipe 540 that refrigerant is directed to the 1st compressing member 300; Refrigerant is directed to the 2nd suction pipe 510 of the 2nd compressing member 400; Cover the 2nd expulsion valve 470 of above-mentioned the 2nd compressing member 400, temporarily store the case 520 of the refrigerant of from the 2nd compressing member 400, discharging; From above-mentioned case 520 refrigerant is directed to the 1st of the 1st compressing member 300 and connects stream 530; The 2nd connect stream 560 what above-mentioned case 520 and above-mentioned the 1st suction pipe and the 2nd suction pipe were connected separately.
The suction side of above-mentioned the 1st suction pipe 540 and the 2nd suction pipe 510 is connected with liquid container 130.Here, the effect of above-mentioned liquid container is: the base fluid that separates refrigerant.
In order to prevent the leakage of refrigerant, above-mentioned case 520 is arranged at the bottom (bottom of the lower bearing 450 of saying so more accurately) of the 2nd compressing member 400.And the low noise when realizing compressor operating also has the effect of baffler (muffler) simultaneously.
The above-mentioned the 1st connects stream 530 connects lower bearing the 450, the 2nd cylinder 410 and intermediate bearing 350 with axle direction, after the radial direction of the 1st cylinder 310 prolongs formation, is connected with the 1st inner space 330 of the 1st cylinder 310.
The above-mentioned the 1st connects stream 530 can be formed at the inside of bearing and cylinder as in the present embodiment.But also its part can be made of members such as pipes, make it be exposed to the outside of compressor.For example, the pipe that is connected with case 520 connects housing 100 and is exposed to an outside part, and then to the side of radial direction perforation housing 100 and the 1st cylinder 310, is connected with the 1st inner space 330 of the 1st cylinder 310.
The above-mentioned the 2nd connects stream 560 comprises the following components formation: be communicated with in order to make above-mentioned case 520 and the 1st suction pipe 540 and the 2nd suction pipe 510, connect above-mentioned housing 100 and be provided with.And, form the 1st branch's stream 570 that is connected with the 1st suction pipe 540 after the 2nd connection stream 560 branches; And the 2nd branch's stream 550 that is connected with the 2nd suction pipe 510.
Above-mentioned control unit comprises following components and constitutes: be arranged on above-mentioned the 1st suction pipe 540 the 1st control valve 525 that flows of control refrigerant; Be arranged on above-mentioned the 1st branch's stream 570 the 2nd control valve 545 that flows of control refrigerant; Be arranged on above-mentioned the 2nd branch's stream 550 the 3rd control valve 555 that flows of control refrigerant.
Above-mentioned the 1st control valve 525 is safety check (check valve) preferably.
Above-mentioned the 2nd, 3 control valves 545,555 are 2 side's valves (2-way valve) preferably.
With reference to Fig. 2,3,4, describe as follows to the action effect of aforesaid multisection rotating type compressor.
At first, with reference to Fig. 2, the situation under the many power modes of the demand of refrigerant is described.Open (on) the 1st control valve 525 makes the suction refrigerant flow into the 1st compressing member 300.Meanwhile, close (off) the 2nd, 3 control valves 545,555, prevent that refrigerant from flowing to the 1st branch's stream 570 and the 2nd branch's stream 550 sides.
Provide power supply to driving element 200, running shaft 230 will rotate.And the 1st rotary-piston 340 and the 2nd rotary-piston 440 will be rotated motion in the inner space 330,430 of each cylinder, thereby form the space between the 1st blade (not prompting among the figure) and the 2nd blade (not prompting among the figure), suck refrigerant.After will being inhaled into the compression of the 1st compressing member 300 by the 1st suction pipe 540 via the part in the refrigerant of liquid container 130, be discharged to the inside of housing 100 by the 1st tap hole 360.After will being inhaled into 400 compressions of the 2nd compressing member by the 2nd suction pipe 510 via the remaining refrigerant of liquid container 130, be discharged in the case 520 by above-mentioned the 2nd tap hole 460.The refrigerant that is discharged to case 520 will connect stream 530 by the 1st and be discharged to housing 100 inside.The refrigerant of discharging separately from the 1st compressing member 300 and the 2nd compressing member 400 will make the inside of housing 100 saturated, and will be by discharge tube repeatedly to housing 100 outside discharges.
As mentioned above, under power mode, the the above-mentioned the 1st and the 2nd compressing member is connected in parallel, compress separately and discharge refrigerant, then, above-mentioned refrigerant of discharging separately flow to the outside of compressor again by discharge tube after housing 100 inside lump together, therefore many than the refrigerant discharge capacity under the save mode described later.
Below, with reference to Fig. 3, the less-in-demand save mode of refrigerant is described.
Close (off) the 1st control valve 525, when preventing that suction refrigerant via liquid container 130 from flowing into the 1st compressing member 300, control the 2nd control valve 545, the 1st suction pipe 540 and the 1st branch's stream 570 are communicated with.At this moment, close the 3rd control valve 555, prevent that refrigerant from flowing to the 2nd branch's stream 550.After will all being inhaled into 400 compressions of the 2nd compressing member by the 2nd suction pipe 510 via the refrigerant of liquid container 130, be discharged in the case 520 by the 2nd tap hole 460.The refrigerant that temporarily is stored in case 520 will connect by the 2nd and be compressed after the 1st branch's stream 570 of stream 560 and the 1st suction pipe 540 are inhaled into the 1st compressing member 300 again.The refrigerant of recompression will be discharged to housing 100 inside by the 1st tap hole 360, and then be directed to outside refrigeration system by discharge tube.
As mentioned above, under save mode, the refrigerant that compresses for the first time in above-mentioned the 2nd compressing member 400 will flow to the 1st compressing member 300 again and be compressed.That is, compressing member is connected in series, so refrigerant will be successively discharges via the 2nd compressing member 400 and the 1st compressing member 300, therefore can make the discharge capacity of refrigerant few relatively, perhaps can obtain high compression ratio.Moreover, in order to obtain the head pressure of suitable level, through the compression process in 2 stages, particularly, the 1st compressing member 300 can suck by the 2nd compressing member 400 boil down tos refrigerant to a certain degree, so required drive is few especially.Under save mode, the required drive of the 1st and the 2nd compressing member and less than the required drive under the power mode, the effect that therefore can obtain economizing on electricity.
In addition, the present invention possesses control unit is arranged, and does not use the anti-phase motor of high price, uses constant-seed motor relatively at a low price, embodies save mode and power mode, realizes volume change, therefore can reduce fabricating cost.
Below, with reference to Fig. 4, the less-in-demand idle mode of refrigerant is described.
Open (on) the 1st control valve 525 when making suction refrigerant via liquid container 130 flow into the 1st compressing member 300, is closed (off) the 2nd control valve 545, and open the 3rd control valve 555 is communicated with the 2nd branch's stream 550 and case 520.
After will being inhaled into the compression of the 1st compressing member 300 by the 1st suction pipe 540 via the part in the refrigerant of liquid container 130, be discharged to the inside of housing 100 by the 1st tap hole 360.After should being inhaled into 400 compressions of the 2nd compressing member by the 2nd suction pipe 510 via the remaining refrigerant of liquid container 130, be discharged in the case 520 by the 2nd tap hole 460 again.But the refrigerant that at this moment, has the pressure of sucking will flow in the case 520 by above-mentioned the 2nd branch's stream.Therefore, the 2nd expulsion valve 470 will be opened in advance, thereby prevent to realize in the 2nd compressing member 400 compression of refrigerant.That is, because the suction in the case 520 is pressed, it is too big that the pressure difference that the 2nd inner space 430 and case are 520 can not form, and therefore will discharge by the 2nd expulsion valve 470 does not have compressed refrigerant.So the 2nd compressing member 400 will dally.
As mentioned above, owing in the 2nd compressing member 400, can not compress, and can only in the 1st compressing member 300, compress, therefore the discharge capacity of compressed refrigerant will reduce.
That is, do not use the anti-phase motor of high price, only use constant-seed motor can realize the variation of refrigerant discharge capacity yet.
Fig. 5 is the sectional drawing that shows according to the 2nd embodiment's of the present invention multisection rotating type compressor.
As shown in the figure, above-mentioned control unit is arranged at the fulcrum of above-mentioned the 1st branch's stream 570 and the 2nd branch's stream 550 branches, and comprises the 4th control valve 580 formations that flow that can regulate refrigerant.
Above-mentioned the 4th control valve 580 is 3 side's valves (3-way valve) or 4 side's valves (4-way valve) preferably.
Among above-mentioned the 2nd embodiment, the adjusting that the refrigerant that the 2nd, 3 control valves 545,555 carry out in the 1st embodiment originally flows is to be undertaken by the 4th control valve 580 in the present embodiment.In addition, flowing of the refrigerant when power mode, save mode and idle mode is identical with the 1st embodiment, so the explanation of omitting its concrete driving mode.
Claims (4)
1. multisection rotating type compressor comprises:
The inner housing that forms confined space;
Be arranged at the housing inboard, produce the driving element of driving force;
The driving force of utilizing above-mentioned driving element to transmit, a plurality of compressing members of compression refrigerant;
Connect above-mentioned a plurality of compressing member, the refrigerant that will discharge from compressing member optionally is directed to the induction element of other compressing member;
Be installed on above-mentioned induction element, above-mentioned a plurality of compressing member is compressed separately, or make the refrigerant of from compressing member, discharging be directed to next compressing member to recompress, perhaps make the control unit of a part of compressing member idle running;
Above-mentioned compressing member is to be made of the 1st compressing member and the 2nd compressing member; It is characterized in that:
Above-mentioned induction element is made of following components:
Refrigerant is directed to the 1st suction pipe of the 1st compressing member;
Refrigerant is directed to the 2nd suction pipe of the 2nd compressing member;
Covering is arranged at the 2nd expulsion valve of above-mentioned the 2nd compressing member, the temporary transient case that stores the refrigerant of discharging from the 2nd compressing member;
Be used for refrigerant being directed to the 1st of enclosure interior and connect stream from above-mentioned case;
The 2nd connect stream what above-mentioned case and above-mentioned the 1st suction pipe and the 2nd suction pipe were connected separately,
The above-mentioned the 2nd connects stream prolongs formation from above-mentioned case, and comprises:
The 1st branch's stream that is connected with above-mentioned the 1st suction pipe is with the 2nd branch's stream that is connected with the 2nd suction pipe;
Above-mentioned control unit is made of following components:
Be arranged on above-mentioned the 1st suction pipe the 1st control valve that flows of control refrigerant;
Be arranged on above-mentioned the 1st branch's stream the 2nd control valve that flows of control refrigerant;
Be arranged on above-mentioned the 2nd branch's stream the 3rd control valve that flows of control refrigerant.
2. multisection rotating type compressor according to claim 1 is characterized in that:
Above-mentioned the 1st control valve is a safety check.
3. multisection rotating type compressor according to claim 1 is characterized in that:
Above-mentioned the 2nd, 3 control valves are 2 side's valves.
4. multisection rotating type compressor according to claim 1 is characterized in that:
Above-mentioned driving element is to be made of constant-seed motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100146184A CN1904370B (en) | 2005-07-25 | 2005-07-25 | Multisection rotating type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100146184A CN1904370B (en) | 2005-07-25 | 2005-07-25 | Multisection rotating type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1904370A CN1904370A (en) | 2007-01-31 |
| CN1904370B true CN1904370B (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005100146184A Expired - Fee Related CN1904370B (en) | 2005-07-25 | 2005-07-25 | Multisection rotating type compressor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560977B (en) * | 2009-05-09 | 2011-12-07 | 广东美芝制冷设备有限公司 | Capacity control rotary compressor |
| CN105840500A (en) * | 2015-04-02 | 2016-08-10 | 熵零股份有限公司 | Three-cylinder coaxial fluid mechanism |
| CN108869288B (en) * | 2018-07-16 | 2024-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner using same |
| CN115750353B (en) * | 2022-11-19 | 2023-07-28 | 上海阿波罗机械股份有限公司 | Shielding multistage self-cooling compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990073A (en) * | 1988-10-31 | 1991-02-05 | Kabushiki Kaisha Toshiba | Two-cylinder rotary compressor having improved valve cover structure |
| US6651458B1 (en) * | 1999-08-31 | 2003-11-25 | Sanyo Electric Co., Ltd. | Internal intermediate pressure 2-stage compression type rotary compressor |
| CN1504703A (en) * | 2002-12-05 | 2004-06-16 | ������������ʽ���� | Refrigerant cycling device |
| CN1576590A (en) * | 2003-07-23 | 2005-02-09 | 三星电子株式会社 | Variable capacity rotary compressor |
-
2005
- 2005-07-25 CN CN2005100146184A patent/CN1904370B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990073A (en) * | 1988-10-31 | 1991-02-05 | Kabushiki Kaisha Toshiba | Two-cylinder rotary compressor having improved valve cover structure |
| US6651458B1 (en) * | 1999-08-31 | 2003-11-25 | Sanyo Electric Co., Ltd. | Internal intermediate pressure 2-stage compression type rotary compressor |
| CN1504703A (en) * | 2002-12-05 | 2004-06-16 | ������������ʽ���� | Refrigerant cycling device |
| CN1576590A (en) * | 2003-07-23 | 2005-02-09 | 三星电子株式会社 | Variable capacity rotary compressor |
Non-Patent Citations (3)
| Title |
|---|
| JP昭58-128492A 1983.08.01 |
| JP昭63-212797A 1998.09.05 |
| JP特开2002-98076A 2002.04.05 |
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Granted publication date: 20100922 Termination date: 20120725 |