CN1955474A - Multi-stage rotary compressor - Google Patents
Multi-stage rotary compressor Download PDFInfo
- Publication number
- CN1955474A CN1955474A CN 200510015672 CN200510015672A CN1955474A CN 1955474 A CN1955474 A CN 1955474A CN 200510015672 CN200510015672 CN 200510015672 CN 200510015672 A CN200510015672 A CN 200510015672A CN 1955474 A CN1955474 A CN 1955474A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- compression unit
- rotary compressor
- stage rotary
- suction pipe
- 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.)
- Pending
Links
Images
Landscapes
- Compressor (AREA)
Abstract
A multi-stage rotation compressor able to compress the cold medium twice is composed of casing, drive unit in said casing, the first and the second compression units, the first suction tube, control valve in the first suction tube, the second suction tube, the second exhaust valve, the cavity for temporary storage cold medium exhausted from the second compression unit, connecting tube between said cavity and control valve, and cold medium channel between said two compression units and with limiting valve.
Description
Technical field
What the present invention related to is rotary compressor, particularly be multi-stage rotary compressor
Background technique
Compressor is widely used in each industry.Compressor is meant the power that reception is transmitted by power sources such as motors, by air or refrigerant and other special gas are applied compression, increases a kind of device of compression work gas pressure.Compressor is divided into displacement type compressor and turbo type compressor according to the mode of compression, and wherein displacement type compressor (Positive displacement compressor) adopts increases the compress mode of its pressure by reducing volume; Turbo type compressor (Turbo compressor) adopts the compress mode that the kinergety of gas is converted to pressure energy.In displacement type compressor, rotary compressor is mainly used in as in the apparatuses of air conditioning such as air-conditioning, and is recently along with the ever-increasing trend of the function of air-conditioning, also more and more significant to the requirement of the adjustable rotary compressor of capacity.
Up to now, the refrigerant of rotary compressor adopts the chloride refrigerant of CFC series.Because this refrigerant existence damages the ozone layer, thereby cause the phenomenon of global warming, its use is limited, and is also therefore encouraging replacing existing refrigerant Study on Technology and exploitation.With present exploitation situation, alternative refrigerant is carbon dioxide possibly.The research of global warming problem not only is confined to substitute the field of refrigerant, also will improve the efficient of equipment simultaneously.Because present most of electric energy still obtains by the mode of fuel such as burning coal, and the carbon dioxide that produces during fuel such as burning coal is only and causes the global warming arch-criminal.
In the compressor of the heart that is referred to as refrigeration system, the problem that people pay close attention to most is how will keep under the prerequisite of existing compressor performance, and a kind of alternative refrigerant harmless to earth environment that be suitable for is provided.Therefore, it is adjustable and can use the compressor that substitutes refrigerant-the have multi-stage rotary compressor of a plurality of compression units a kind of capacity to have occurred.
In common multi-stage rotary compressor,, and will be accommodated in the seal container the driver element that compression unit drives to a plurality of compression units that separately refrigerant sucked, compress and discharges.
In above-mentioned compression unit, along with the running shaft of driver element rotation with integrally formed a plurality of centrifugal cams, and the outer circumferential face of each centrifugal cam will be embedded into plunger and fix.Plunger is positioned at the inside of cylinder, and with cylinder under state of contact, move back and forth.In cylinder interior, will be divided into induction chamber and pressing chamber by the ring that rolls that contacts with plunger.Above-mentioned driver element is made of the motor that can the rotary driving axle be rotated, and is received into the inside of seal container with compression unit.
In common as mentioned above multi-stage rotary compressor, plunger contacts and repeatedly refrigerant is sucked, compresses and discharges with the internal diameter of cylinder.When load need move hereinafter to be referred as normal mode with bigger capacity greatly, drive a plurality of compression units respectively; Thereby in the time of need reducing power consumption hereinafter to be referred as battery saving mode with less capacity operation when loading less, adopt the method that is drawn into the refrigerant in a part of compression unit that stops, utilize after moving backward fixed plate (Piece) etc. to fix when rolling ring (Vane), remove the separation state between suction chamber and the pressing chamber, thereby make plunger dally Idling and the method that can't compress refrigerant.
Also the pole-changing motor (Inverter motor) with controlling and driving device can be used as driver element, reach the purpose of adjusting the refrigerant capacity by adjusting its speed.
But there are following shortcoming in the structure of aforesaid common rotary compressor and operation method thereof.
The first, the mode to the refrigerant that is drawn in the compression unit stops can't realize the variation of various different capabilities.
The second, under battery saving mode, make and move after rolling hoop and, need to install as parts such as fixed plates separately, and need to be equipped with the required space of above-mentioned parts is installed its mode of fixing, thus the increase production process.
The 3rd, along with fixed plate impacts rolling ring for a long time repeatedly, the surface produces infringement, and causes producing wearing and tearing or impurity, thereby reduces its quality.
The 4th, when adopting idle running or stop the mode of refrigerant suction, because can't use a part of compression unit, so can reduce the efficient of compressor.
The 5th, when pole-changing motor is used as driver element, improve cost of production because its price is higher, therefore, need a kind of technology that realizes capacity regulating in the constant-seed motor of less expensive at present.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of and not only regulate its capacity, can also make cost of production drop to minimum multi-stage rotary compressor according to the variation of room temperature,
Another object of the present invention is to provide a kind of when working with battery saving mode, use the following multi-stage rotary compressor of realizing power saving effect of state of a plurality of compression units simultaneously for the discharge capacity that reduces refrigerant,
The technological scheme that solves the problems of the technologies described above is:
A kind of multi-stage rotary compressor, this multi-stage rotary compressor comprises: the inner shell that forms airtight control; Be installed on the driver element that is used to produce driving force in the shell; By receiving the driving force transmitted by driver element the 1st compression unit and the 2nd compression unit, refrigerant is directed to the 1st suction pipe in the 1st compression unit to the refrigerant compression; Be installed on and be used in the 1st suction pipe sucking the control valve that refrigerant is controlled; Refrigerant is directed to the 2nd suction pipe in the 2nd compression unit; By covering the 2nd expulsion valve that the discharge refrigerant of the 2nd compression unit is controlled, the chamber that the refrigerant of discharging in the 2nd compression unit is temporarily preserved; The connecting tube of connection chamber and control valve; By connecting the 1st compression unit and the 2nd compression unit, the refrigerant flow that the seal space of chamber and shell is communicated with; Be installed in the limiting valve that in the refrigerant flow refrigerant flow is carried out switch.
Described control valve is a three-way valve.
Described refrigerant flow constitutes with annular, and with vertical perforation within it portion be formed for the cylinder of each compression unit of inner space that refrigerant is compressed; Side bearing, intermediate bearing, following side bearing on mulching method has about cylinder one side forms.
Described limiting valve is a leaf valve.
Described driver element uses constant-seed motor.
In described the 1st compression unit and the 2nd compression unit, be used for compression refrigerant is sucked and the inner space capacity that compresses has nothing in common with each other.
In described the 1st suction pipe and the 2nd suction pipe, have only one of them to be connected with liquid container.
Suction one side of described the 1st suction pipe and the 2nd suction pipe is connected with the liquid container that the gaseous liquid in the refrigerant is separated separately.
The invention has the beneficial effects as follows: the present invention compresses once more to the refrigerant after being compressed, and can reach higher head pressure, thereby can improve its volumetric efficiency.In addition,, can reduce leakage, and significantly minimizing is delivered to heat in suction side's low temperature refrigerant to the enclosure of head pressure because use refrigerant after being compressed when compressing once more.Simultaneously, the present invention does not need to be equipped with independent parts and installing space with respect to move the mode of rolling ring and fixing backward under battery saving mode, and production process is simple.Owing to no longer need to use fixed plate that the ring that rolls that retreats is fixed, therefore can avoid problems such as wearing and tearing and foreign matter generation, thereby improve the stability and the quality of its product.
The present invention still uses a plurality of compression units under battery saving mode, can improve the efficient of motor and compressor.Because the refrigerant after being compressed is compressed once more, needed power with respect to normal mode still less, thereby realize power saving effect.Utilize the constant-seed motor pondage of less expensive, can save cost.
Description of drawings
Fig. 1 is an embodiment of the invention longitudinal sectional drawing;
Fig. 2 is that the embodiment of the invention is at normal mode working state sectional drawing;
Fig. 3 is that the embodiment of the invention is at battery saving mode working state sectional drawing.
The symbol description material * * * of * * accompanying drawing major component
100: shell 110: discharge tube
130: liquid container 200: driver element
210: stator 220: rotor
230: 300: the 1 compression units of running shaft
340: the 1 plungers in 330: the 1 inner spaces
350: 360: the 1 tap holes of intermediate bearing
400: the 2 compression units of 370: the 1 expulsion valves
430: the 2 inner spaces of 410: the 2 cylinders
Plunger 450 in 440: the 2: following side bearing
470: the 2 expulsion valves of 460: the 2 tap holes
500: 710: the 1 suction pipes of limiting valve
715: control valve 720: connecting tube
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in detail.
Fig. 1 is an embodiment of the invention longitudinal sectional drawing.
As shown in the figure, multi-stage rotary compressor of the present invention is included in the inner shell 100 that forms airtight control; Be installed on the driver element 200 that is used to produce driving force in the shell 100; By receiving the driving force of transmitting by driver element 200, the 1st compression unit 300 and the 2nd compression unit 400 that refrigerant is compressed; Refrigerant is directed to the 1st suction pipe 710 in the 1st compression unit 300; Be installed in the 1st suction pipe 710, be used for sucking the control valve 715 that refrigerant is controlled; Refrigerant is directed to the 2nd suction pipe 730 in the 2nd compression unit 400; By covering the 2nd expulsion valve 470 that the discharge refrigerant of the 2nd compression unit 400 is controlled, the chamber 740 that the refrigerant of discharging in the 2nd compression unit 400 is temporarily preserved; The connecting tube 720 of connection chamber 740 and control valve 715; By connecting the 1st compression unit 300 and the 2nd compression unit 400, the refrigerant flow 600 that the seal space of chamber 740 and shell 100 is communicated with; Be installed in the refrigerant flow 600, refrigerant flow 600 carried out the limiting valve 500 of switch.
Above-mentioned shell 100 forms to connect the mode of protruding pipe the 110, the 1st suction pipe 710 and the 2nd suction pipe 730.
Above-mentioned driver element 200 comprises that the inside that is fixed on shell 100 inserts the stator 210 of power supply from the outside; Install in the mode of a fixed gap at interval in the inside of stator 210, the rotor 220 that is rotated in the interactional process is taking place with stator; Forming as one with rotor 220 is used for driving force is delivered in each compression unit 300,400, has the running shaft 230 of two centrifugal portions.
Above-mentioned compression unit comprises the 1st compression unit 300 and the 2nd compression unit 400.The 1st compression unit 300 wherein comprises the 1st cylinder 310 of the ring-type that is installed on shell 100 inside; Common the 1st inner space 330 that forms, both sides up and down by covering the 1st cylinder 310, and radial direction running shaft 230 is supported on side bearing 320 and intermediate bearing 350; Be inserted into the centrifugal portion of upside of running shaft 230, in the 1st inner space 330 of the 1st cylinder 310, be rotated the 1st plunger 340 that in the process refrigerant is compressed; In order to make the outer circumferential face crimping of itself and the 1st plunger 340,, the 1st inner space 330 of the 1st cylinder 310 is divided into the 1st of the 1st suction chamber and the 1st pressing chamber rolls ring (not marking among the figure) with the mode combination that can move along the radial direction of the 1st cylinder 310; With the front end combination of the 1st tap hole 360 that forms in mode that can switch and the side bearing on above-mentioned 320 and be communicated with the 1st pressing chamber, the 1st expulsion valve 370 that the refrigerant of discharging in the 1st pressing chamber is regulated.
Above-mentioned the 2nd compression unit 400 comprises the 2nd cylinder 410 of below that is positioned at the 1st cylinder 310 and the ring-type that contacts with intermediate bearing 350; Common the 2nd inner space 430 that forms of upper side by being attached to the 2nd cylinder 410, and the following side bearing 450 that running shaft 230 is supported at radial direction and axle direction; Combine the 2nd plunger 440 that the refrigerant of the 2nd inner space 430 that is positioned at the 2nd cylinder 410 is compressed in rotary manner with centrifugal of the downside of running shaft 230; In order to make the outer circumferential face crimping of itself and the 2nd plunger 440, the mode combination of moving with the radial direction along the 2nd cylinder 410 is divided into the 2nd of the 2nd suction chamber and the 2nd pressing chamber with the 2nd inner space 430 of the 2nd cylinder 410 and rolls ring (not marking among the figure); With the mode of switch and the 2nd expulsion valve 470 of the 2nd tap hole 460 front end combinations that form in following side bearing 450 1 sides and be communicated with the 2nd pressing chamber.
The volume of the volume of the inner space 330 of above-mentioned the 1st cylinder 310 and the 2nd inner space 430 of the 2nd cylinder 410 can be identical, but in order to realize the adjusting between the multiple capacity, form suitable with different volumes.
Suction one side of above-mentioned the 1st suction pipe 710 and the 2nd suction pipe 730 is connected with the liquid container 130 that is used for the gaseous liquid of refrigerant is separated.Above-mentioned liquid container 130 is sent to the 1st suction pipe 710 and the 2nd suction pipe 730 with the scrubbed gas composition separate gaseous liquid a liquid container pipe 135 that receives refrigerant from the outside after.And in the 1st suction pipe or the 2nd suction pipe, one of them can not be directly connected in the compression unit by liquid container 130.
Above-mentioned control valve 715 uses three-way valve 3 to be advisable, and for its valve is controlled, above-mentioned control valve 715 is connected with microprocessor.
In order to prevent that refrigerant from leaking, chamber 740 closely is installed in the below of the 2nd compression unit 400 and more precisely descends the below of side bearing 450 and keep sealing.
In addition, the noise that produces when reducing compressor operating makes it utilize acting as of silencing apparatus suitable simultaneously when chamber 740 is designed.
In detail, refrigerant flow forms in the mode of a side of the 320, the 1st cylinder 310 of side bearing in the vertical perforation, intermediate bearing the 350, the 2nd cylinder 410 and following side bearing 450.
Above-mentioned limiting valve 500 uses leaf valve to be advisable.Leaf valve is meant a kind of thin sheet form, thereby along with the pressure difference of gas is carried out the valve that the recloser effect is played in bending.Above-mentioned limiting valve comprises main body that forms with thin sheet form and the fixing part 510 that is used for fixing main body.
Below, effect of the present invention and effect are described.
Fig. 2 is that the embodiment of the invention is at normal mode working state sectional drawing.As shown in the figure, when under the bigger normal mode of the demand of refrigerant, working, at first control valve 715 is operated prevention refrigerant flowing in connecting tube 720, make refrigerant flow into the 1st compression unit 300, make refrigerant flow into the 2nd compression unit 400 simultaneously by the 2nd suction pipe 730.
When being driver element 200 connection power supplys, running shaft 230 begin to rotate and the 1st plunger 340 and the 2nd plunger 440 in separately cylinder interior space 330,340 move back and forth, and the 1st roll that ring (not marking among the figure) and the 2nd rolls ring (not marking among the figure) thus between form volume and suck refrigerant.Refrigerant after passing through liquid container 130, a part will be inhaled in the 1st compression unit 300 by the 1st suction pipe 710, and be discharged to the inside of shell 100 after being compressed by the 1st tap hole 360.Refrigerant by remainder after the liquid container 130 is inhaled in the 2nd compression unit 400 by the 2nd suction pipe 730, and is discharged to the inside in chamber 740 by the 2nd tap hole 460 after being compressed.When the refrigerant of 740 inside, chamber reaches certain pressure when above, thereby limiting valve 500 will be bent refrigerant is flow in the seal space in the shell 100.Each refrigerant of discharging in the 1st compression unit 300 and the 2nd compression unit 400 will fill up the inside of shell 100, be discharged to the outside of shell 100 then by discharge tube, and said process is carried out in circulation successively.
As mentioned above, when under normal mode, working, above-mentioned the 1st compression unit and the 2nd compression unit will be by parallel connections, thereby separately refrigerant is compressed and discharge, and move to the outside of compressor by discharge tube after assembling in that shell 100 is inner, so the discharge capacity of its refrigerant is more with respect to the follow-up battery saving mode that will illustrate.
Fig. 3 is that the embodiment of the invention is at battery saving mode working state sectional drawing.As shown in the figure,, make by the suction refrigerant after the liquid container 130 and can't flow directly into the 1st compression unit 300, only allow the refrigerant of process connecting tube 720 flow into the 1st compression unit 300 by operation control valve 715.At this moment, will all be inhaled in the 2nd compression unit 400 by the 2nd suction pipe 730, be discharged to 740 inside, chamber by the 2nd tap hole 460 after being compressed by the refrigerant after the liquid container 130.The refrigerant that temporarily is saved in 740 inside, chamber flow into the 1st compression unit 300 by connecting tube 720 and is compressed once more.And will be discharged to the inside of shell 100 by the 1st tap hole 360 by the refrigerant after compressing once more, be directed to outside refrigeration system by discharge tube at last.In these cases, because shell 100 pressure inside are higher than chamber 740 pressure inside for discharging to press, so limiting valve 500 can be by opening, and whole refrigerants of 740 inside, chamber all will flow in the 1st compression unit by connecting tube 720.
As mentioned above, when working under battery saving mode, the refrigerant that compresses in above-mentioned the 2nd compression unit 400 will move to the 1st compression unit 300 and be compressed once more.Be that compression unit is connected, thereby make refrigerant be compressed and discharge by the 2nd compression unit 400 and the 1st compression unit 300 successively,, can reach higher compression factor though therefore the discharge capacity of refrigerant is less relatively.In addition, in order to obtain to specify the head pressure of level, can be through the compression process in two stages, what especially suck in the 1st compression unit 300 is refrigerant after being compressed to a certain degree by the 2nd compression unit 400, therefore needed power is very little.So when under battery saving mode, working, the 1st compression unit and the 2nd compression unit required drive and will be less than normal mode, thereby realize power savings.
In addition, because the present invention has control unit,, still can realize the adjusting of capacity, thereby reduce production costs by normal mode and battery saving mode so use under the state of the cheaper constant-seed motor of price not using the high price pole-changing motor.
Claims (8)
1. multi-stage rotary compressor, this multi-stage rotary compressor comprises: the inner shell that forms airtight control; Be installed on the driver element that is used to produce driving force in the shell; By receiving the driving force transmitted by driver element the 1st compression unit and the 2nd compression unit to the refrigerant compression, it is characterized in that, refrigerant is directed to the 1st suction pipe in the 1st compression unit; Be installed on and be used in the 1st suction pipe sucking the control valve that refrigerant is controlled; Refrigerant is directed to the 2nd suction pipe in the 2nd compression unit; By covering the 2nd expulsion valve that the discharge refrigerant of the 2nd compression unit is controlled, the chamber that the refrigerant of discharging in the 2nd compression unit is temporarily preserved; The connecting tube of connection chamber and control valve; By connecting the 1st compression unit and the 2nd compression unit, the refrigerant flow that the seal space of chamber and shell is communicated with; Be installed in the limiting valve that in the refrigerant flow refrigerant flow is carried out switch.
2. multi-stage rotary compressor according to claim 1 is characterized in that, described control valve is a three-way valve.
3. multi-stage rotary compressor according to claim 1 is characterized in that described refrigerant flow constitutes with annular, and with vertical perforation within it portion be formed for the cylinder of each compression unit of inner space that refrigerant is compressed; Side bearing, intermediate bearing, following side bearing on mulching method has about cylinder one side forms.
4. multi-stage rotary compressor according to claim 1 is characterized in that, described limiting valve is a leaf valve.
5. multi-stage rotary compressor according to claim 1 is characterized in that, described driver element uses constant-seed motor.
6. multi-stage rotary compressor according to claim 1 is characterized in that, in described the 1st compression unit and the 2nd compression unit, is used for compression refrigerant is sucked and the inner space capacity that compresses has nothing in common with each other.
7. multi-stage rotary compressor according to claim 1 is characterized in that, has only one of them to be connected with liquid container in described the 1st suction pipe and the 2nd suction pipe.
8. multi-stage rotary compressor according to claim 1 is characterized in that, suction one side of described the 1st suction pipe and the 2nd suction pipe is connected with the liquid container that the gaseous liquid in the refrigerant is separated separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015672 CN1955474A (en) | 2005-10-27 | 2005-10-27 | Multi-stage rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015672 CN1955474A (en) | 2005-10-27 | 2005-10-27 | Multi-stage rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955474A true CN1955474A (en) | 2007-05-02 |
Family
ID=38062975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015672 Pending CN1955474A (en) | 2005-10-27 | 2005-10-27 | Multi-stage rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1955474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062366A1 (en) * | 2007-11-17 | 2009-05-22 | Guang Dong Mei Zhi Refrigeration Equipment Co., Ltd | A discharge valve device of a rotary compressor |
-
2005
- 2005-10-27 CN CN 200510015672 patent/CN1955474A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062366A1 (en) * | 2007-11-17 | 2009-05-22 | Guang Dong Mei Zhi Refrigeration Equipment Co., Ltd | A discharge valve device of a rotary compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101052808A (en) | Capacity varying type rotary compressor | |
| CN1219982C (en) | Turbine compressor | |
| CN1236255C (en) | Refrigerant circulation device | |
| CN1482364A (en) | Compressor | |
| CN1779262A (en) | Double-cylinder rotary compressor and air conditioner therewith | |
| CN1532473A (en) | R4efrigerant circulation device | |
| CN1769710A (en) | Apparatus for changing capacity of multi-stage rotary compressor | |
| CN1690599A (en) | Apparatus for switching air conditioner refrigerant pipes | |
| CN1541306A (en) | Compressor | |
| CN1757927A (en) | Orbiting vane compressor | |
| CN1950610A (en) | Rotary fluid machine | |
| CN1793660A (en) | Rotary compressor of multi-cylinder | |
| CN1629490A (en) | Vortex compressor | |
| CN101080597A (en) | Air-conditioner and its driving method | |
| CN100343518C (en) | Multi-cylinder compressor | |
| CN1904370A (en) | Multisection rotating type compressor | |
| CN1608173A (en) | Hermetic compressor | |
| CN1904369A (en) | Multisection rotating type compressor and airconditioner therefor | |
| CN1955474A (en) | Multi-stage rotary compressor | |
| CN1955477B (en) | Multi-stage rotary compressor | |
| CN1757920A (en) | Hermetically sealed type orbiting vane compressor | |
| CN1880770A (en) | Oil drainage reducing device of high-pressure type scroll compressor | |
| CN101128673B (en) | Multilevel rotary compressor | |
| CN1690553A (en) | Apparatus for switching air conditioner refrigerant pipes | |
| CN2769556Y (en) | Vortex 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 | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20070502 |