CN103821716B - Twin-stage rotary compressor and the refrigerating circulatory device with it - Google Patents
Twin-stage rotary compressor and the refrigerating circulatory device with it Download PDFInfo
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- CN103821716B CN103821716B CN201410074761.1A CN201410074761A CN103821716B CN 103821716 B CN103821716 B CN 103821716B CN 201410074761 A CN201410074761 A CN 201410074761A CN 103821716 B CN103821716 B CN 103821716B
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Abstract
The invention discloses a kind of twin-stage rotary compressor and the refrigerating circulatory device with it, the twin-stage rotary compressor includes：Air jet pipe；Housing, housing, which is externally provided with reservoir, housing, has jet chamber, and jet chamber is connected with reservoir and air jet pipe respectively；Two cylinders, two cylinders are each provided in housing and are spaced apart from each other on vertical, and one of them in two cylinders is connected with jet chamber, another is connected with reservoir and with the vane slot and compression chamber radially extended, the exhaust outlet of compression chamber is connected with jet chamber；Piston, piston is located in compression chamber and can rolled along the inwall of compression chamber；Slide plate, slide plate is movably arranged in vane slot and the inwall of outer end and vane slot limits back pressure chamber jointly, back pressure chamber is connected with jet chamber, and slide plate is configured to be accommodated in when jet chamber is connected with reservoir inner only to piston when vane slot is interior, jet chamber is connected with air jet pipe.According to the twin-stage rotary compressor of the present invention, performance is good and reliability is high.
Description
Technical field
The present invention relates to appliance field, more particularly, to a kind of twin-stage rotary compressor and the kind of refrigeration cycle with it dress
Put.
Background technology
Pointed out in correlation technique, when for example air conditioner load is big for refrigerating circulatory device, such as ultralow temperature is heated, due to system
The specific volume of cryogen is big, and compressor air suction mass flow reduces, except causing compressor heating capacity to be greatly lowered, meanwhile, by
In mass flow reduction, oil return is difficult, and the heat that refrigerant is taken away is reduced, and is easily caused compressor pump abrasion and motor is reliable
Property decline, and system energy efficiency is low.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of twin-stage rotary compressor, property of the twin-stage rotary compressor under various environment temperatures
It can make moderate progress, and reliability is high.
It is another object of the present invention to propose a kind of refrigerating circulatory device with above-mentioned twin-stage rotary compressor.
The twin-stage rotary compressor of embodiment according to a first aspect of the present invention, including：Air jet pipe；Housing, the housing
Being externally provided with reservoir, the housing has jet chamber, and the jet chamber is connected with the reservoir and the air jet pipe respectively；
Two cylinders, described two cylinders are each provided in the housing and are spaced apart from each other on vertical, its in described two cylinders
In one connected with the jet chamber, another is connected with the reservoir and with the vane slot and compression chamber radially extended,
The exhaust outlet of the compression chamber is connected with the jet chamber；Piston, the piston is located in the compression chamber and along the compression
The inwall of chamber can be rolled；And slide plate, the slide plate is movably arranged in the vane slot and outer end and the vane slot
Inwall limits back pressure chamber jointly, and the back pressure chamber is connected with the jet chamber, wherein the slide plate is configured to the jet
It is inner when chamber is accommodated in when being connected with the reservoir in the vane slot, the jet chamber is connected with the air jet pipe only to support institute
State piston.
Twin-stage rotary compressor according to embodiments of the present invention, for example surpasses greatly in refrigerating circulatory device such as air conditioner load
During low-temperature heating, compressed using twin-stage jet, gas mass flow can be effectively increased, improve refrigerating circulatory device heating capacity
And efficiency, and improve pump housing lubrication, in ordinary temp operating mode refrigerating operaton, using single stage compress, kind of refrigeration cycle can be improved
The efficiency and efficiency of device.
In addition, twin-stage rotary compressor according to the above embodiment of the present invention can also have technology additional as follows special
Levy：
Alternatively, bottom more next in described two cylinders is provided with bearing, and the bottom of the bearing is provided with cover plate, institute
State cover plate and limit the jet chamber jointly with the bearing.
Or alternatively, provided with isolating device between described two cylinders, the jet is limited in the isolating device
Chamber.
Specifically, the isolating device includes：Slider, the top of the slider and/or bottom-open；And isolation
Plate, the division board is located at the top and/or bottom of the slider and limits the jet chamber jointly with the slider.
Alternatively, the jet chamber is connected by triple valve with the reservoir and the air jet pipe.
Further, the jet chamber has the air entry being connected with the triple valve, the back pressure chamber and the air-breathing
Mouth is communicated.
Alternatively, the discharge volume of one of cylinder is V1, and the discharge volume of another cylinder is V2, its
Middle V1/V2=0.45~0.95.
Alternatively, the height of one of cylinder is less than in the height of another cylinder, the housing and is provided with
Bent axle, the bent axle is provided with axially spaced two eccentric parts, and the lower end of the bent axle is stretched into described two cylinders,
And described two eccentric parts are located in described two cylinders respectively, the offset of the eccentric part in one of cylinder
More than or equal to the offset of the eccentric part of another cylinder.
The refrigerating circulatory device of embodiment according to a second aspect of the present invention, including：Evaporator；Condenser, the condenser
It is connected with the evaporator；Throttling arrangement, the throttling arrangement is located between the evaporator and the condenser；Flash vessel,
The flash vessel is located between the throttling arrangement and the condenser；And revolved according to the twin-stage of above-mentioned first aspect of the invention
There is gas returning port and gas outlet, the evaporator, the condenser pass through on rotary compressor, the twin-stage rotary compressor
Four-way valve is connected with the gas returning port, the gas outlet respectively, and the flash vessel is connected with the air jet pipe.
Refrigerating circulatory device according to embodiments of the present invention, by setting the twin-stage of above-mentioned first aspect embodiment rotary
Compressor, when load is smaller, selection single-stage operation when load is big, is run using twin-stage, followed so as to effectively increase refrigeration
Overall performance, reliability and the efficiency of loop device.
Further, control valve is provided between the condenser and the flash vessel, the refrigerating circulatory device is further
Including：By-passing valve, the by-passing valve is in parallel with the control valve and the flash vessel.
Further, the refrigerating circulatory device also includes：First throttle device and the first control valve, the first segment
Stream device and first control valve are respectively provided at the control valve and the flash vessel, the flash vessel and the throttling arrangement
Between, the control valve, the first throttle device and the flash vessel are in parallel with the by-passing valve.
Alternatively, the throttling arrangement is capillary or expansion valve.
Further, the second control valve is provided between the gas returning port and the air jet pipe.
Alternatively, the refrigerating circulatory device is air-conditioning.
Further, the refrigerating circulatory device further comprises：Water tank, the water tank be connected with the evaporator with
The evaporator heat exchange.
Alternatively, the refrigerating circulatory device is Teat pump boiler.
Brief description of the drawings
Fig. 1 is the schematic diagram of twin-stage rotary compressor according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the compression set of the twin-stage rotary compressor shown in Fig. 1；
Fig. 3 is the top view of the compression set shown in Fig. 2；
Fig. 4 is the profile of the line A-A along along Fig. 3；
Fig. 5 is the side view of the compression set shown in Fig. 1；
Fig. 6 is the profile of the line B-B along along Fig. 5；
Fig. 7 is the schematic diagram of compression set in accordance with another embodiment of the present invention；
Schematic diagram when Fig. 8 is refrigerating circulatory device refrigeration according to embodiments of the present invention；
Fig. 9 is schematic diagram when refrigerating circulatory device shown in Fig. 8 is heated；
Schematic diagram when Figure 10 is the refrigerating circulatory device defrosting shown in Fig. 8；
Schematic diagram when Figure 11 is refrigerating circulatory device defrosting in accordance with another embodiment of the present invention.
Reference：
100：Twin-stage rotary compressor；
1：Air jet pipe；2：Housing；21：Gas outlet；
3：Reservoir；31：Low pressure air suction pipe；32：First air intake duct；33：Gas returning port；
4：Motor；41：Stator；42：Rotor；5：Triple valve；
6：Compression set；
61：Base bearing；62：First cylinder；621：First compression chamber；
622：First piston；623：First slide plate；624：Spring；
63：Dividing plate；631：Slider；632：Division board；
64：Second cylinder；641：Second compression chamber；642：Second piston；
643：Second slide plate；644：Back pressure chamber；
65：Supplementary bearing；651：Jet chamber；652：Air entry；653：Second air intake duct；
6541：First passage；6542：Second channel；6543：Third channel；
66：Cover plate；67：Bent axle；671：First eccentric part；672：Second eccentric part；
200：Refrigerating circulatory device；
201：Evaporator；202：Condenser；203：Throttling arrangement；
204：Flash vessel；2041：Second control valve；
205：By-passing valve；206：Four-way valve；207：Control valve；
208：First throttle device；209：First control valve.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
The twin-stage rotary compressor 100 of embodiment can be used for refrigerating circulatory device for example according to a first aspect of the present invention
In air-conditioning.In the description below the application, illustrated so that twin-stage rotary compressor 100 is used in air-conditioning as an example.Certainly,
Those skilled in the art understand, be can be also used for according to the twin-stage rotary compressor 100 of the present invention in Teat pump boiler
Deng.
As Figure 1-Figure 4, the twin-stage rotary compressor 100 of embodiment, including jet according to a first aspect of the present invention
Pipe 1, housing 2, two cylinders, piston and slide plate.
Housing 2, which is externally provided with reservoir 3, housing 2, has jet chamber 651.For example in the example of fig. 1, reservoir 3 can be with
It is fixed on the side wall of housing 2, accommodating chamber is limited in housing 2, the top of accommodating chamber has motor 4, and motor 4 includes ring
The stator 41 and rotor 42 of shape, stator 41 are fixed on the inwall of housing 2, and rotor 42 is rotatably arranged in stator 41, are accommodated
The bottom of chamber, which has in compression set 6, the driving compressed gas of compression set 6 of motor 4, compression set 6, limits jet chamber
651, jet chamber 651 is connected with reservoir 3 and air jet pipe 1 respectively, to be passed through the gas that pressure is not waited into jet chamber 651 respectively
Body.
Compression set 6 includes two cylinders, two pistons, two slide plates, two bearings, dividing plate 63 and bent axle 67.In order to
It is easy to description, in the description below the application, two cylinders, two pistons, two slide plates, two bearings is divided into respectively
First cylinder 62, the second cylinder 64, first piston 622, second piston 642, the first slide plate 623, the second slide plate 643, base bearing
61 and supplementary bearing 65.
Wherein, the first cylinder 62 and the second cylinder 64 are top and bottom unlimited tubular, the first cylinder 62 and second
Cylinder 64 is spaced from each other in the vertical direction, and the first cylinder 62 is located at the top of the second cylinder 64, the first cylinder 62 and the
The first vane slot and the second vane slot radially extended, the first slide plate 623 and the second slide plate 643 are respectively formed with two cylinders 64
It is respectively received in the first vane slot and the second vane slot and may move upwards in interior foreign side, the outer end connection of the first slide plate 623
There is spring, under the elastic force effect of spring the inner of the first slide plate 623 can be caused to remain the periphery with first piston 622
Wall is contacted, and dividing plate 63 is located between the first cylinder 62 and the second cylinder 64, and base bearing 61 is located at the top of the first cylinder 62, countershaft
65 bottoms for being located at the second cylinder 64 are held, so that base bearing 61, the first cylinder 62 and dividing plate 63 limit the first compression chamber jointly
621, dividing plate 63, the second cylinder 64 and supplementary bearing 65 limit the second compression chamber 641, upper end and the motor 4 of bent axle 67 jointly
Rotor 42 is connected and drives rotation by rotor 42, and the lower end of bent axle 67 sequentially passes through base bearing 61 and dividing plate 63 and stretches into the first pressure
In the compression chamber 641 of contracting chamber 621 and second, bent axle 67 is provided with along its first eccentric part 671 and second axially spaced from each other
Eccentric part 672, first piston 622 and second piston 642 be respectively sleeved on the first eccentric part 671 and the second eccentric part 672 and
It can be rolled along the inwall of the first compression chamber 621 and the second compression chamber 641.Here, it is necessary to which explanation, direction " interior " is appreciated that
For towards the direction of the first cylinder 62 or the center of the second cylinder 64, its opposite direction is defined as " outer ", i.e., away from the first cylinder
62 or the direction at the center of the second cylinder 64.
Two cylinders（That is the first cylinder 62 and the second cylinder 64）It is each provided in housing 2 and vertical（For example, in Fig. 1
Above-below direction）On be spaced apart from each other, one of them in two cylinders（For example, the first cylinder 62 in Fig. 1）With jet chamber 651
Connection, specifically, jet chamber 651 is connected with the air inlet of the first compression chamber 621 of the first cylinder 62, so that by jet chamber 651
Interior gas is passed through in the first compression chamber 621 and is compressed.
Another in two cylinders（For example, the second cylinder 64 in Fig. 1）Connected with reservoir 3, specifically, the second gas
Second compression chamber 641 of cylinder 64 is mutually passed to by the bottom of the first air intake duct 32 and reservoir 3 gas to be compressed being passed through
It is compressed in two compression chambers 641, and another above-mentioned cylinder（For example, the second cylinder 64 in Fig. 1）With what is radially extended
Vane slot（That is the second vane slot）And compression chamber（That is the second compression chamber 641）, compression chamber（That is the second compression chamber 641）Exhaust outlet
Connected with jet chamber 651, piston（That is second piston 642）It is located at compression chamber（That is the second compression chamber 641）It is interior and along compression chamber（I.e.
Second compression chamber 641）Inwall can roll, when the second 64 compression work of cylinder, the gas after being compressed in the second compression chamber 641
Body can enter jet chamber 651 by exhaust outlet, and the gas in it is passed through in the first compression chamber 621 and pressed again by jet chamber 651
Contracting.
Slide plate（For example, the second slide plate 643 in Fig. 1 and Fig. 4）It is movably arranged at vane slot（That is the second vane slot）It is interior,
And slide plate（That is the second slide plate 643）Outer end and vane slot（That is the second vane slot）Inwall limit back pressure chamber 644 jointly, carry on the back
Pressure chamber 644 is connected with jet chamber 651, wherein slide plate（That is the second slide plate 643）Jet chamber 651 is configured to connect with reservoir 3
When be accommodated in vane slot（That is the second vane slot）It is interior, for example, air-conditioning is under cooling condition, now enter jet chamber 651 and
The gas of two cylinders 64 is all that the pressure at two ends inside and outside low-pressure gas, the second slide plate 643 is equal, i.e. the second compression chamber 641 and the back of the body
Pressure in pressure chamber 644 is equal, and second piston 642 is supported in the inner of the second slide plate 643 incessantly, and therefore, the second cylinder 64 is unloaded, the
Low-pressure gas of the air-breathing of one cylinder 62 from jet chamber 651, carries out single stage compress.
Piston is only supported in the inner of second slide plate 643 when jet chamber 651 is connected with air jet pipe 1（That is second piston 642）.Example
Such as, air-conditioning is in worst cold case, and the second cylinder 64 sucks the low-pressure gas that the evaporator 201 from air-conditioning is exported, jet chamber 651
Suck the flash vessel 204 from air-conditioning medium pressure gas, now inside and outside the second slide plate 643 two ends pressure, i.e., second pressure
It is the low-pressure gas that pressure is relatively low in contracting chamber 641, is the higher medium pressure gas of pressure in back pressure chamber 644, the second slide plate 643 is in pressure
Inner in the presence of difference only to support second piston 642, the second cylinder 64 is loaded, after the compression of the second cylinder 64, the gas of jet chamber 651
For the mixed gas of the gas after being compressed through the second cylinder 64 and the medium pressure gas from flash vessel 204, the first cylinder 62 is sucked
After medium pressure gas, the second second compression is carried out, the receiving space of housing 2 will be discharged to after gas compression to high pressure, so as to realize double
Level compression.
Thus, the second slide plate 643 is controlled by using the air pressure of jet chamber 651, when single-stage is run, in jet chamber 651
Air pressure be low pressure, equal with the pressure in the second cylinder 64, i.e., to the pressure release of the second slide plate 643, the second slide plate 643 is failure to actuate,
Worn away so as to reduce twin-stage rotary compressor 100, improve the efficiency of twin-stage rotary compressor 100.When twin-stage is run, spray
Air pressure in air cavity 651 is middle pressure, so that the air pressure in back pressure chamber 644 is middle pressure, with the high pressure in housing 2, outside compression set 6
Compare, the pressure difference at two ends reduces inside and outside the second slide plate 643, so as to reduce the abrasion of the second slide plate 643, be effectively protected the
Two slide plates 643, and then reduce the abrasion of twin-stage rotary compressor 100, improve the use longevity of twin-stage rotary compressor 100
Life.
Twin-stage rotary compressor 100 according to embodiments of the present invention is big in such as air conditioner load of refrigerating circulatory device 200
For example when ultralow temperature is heated, compressed using twin-stage jet, gas mass flow can be effectively increased, improve refrigerating circulatory device
200 heating capacities and efficiency, and improve pump housing lubrication, in ordinary temp operating mode refrigerating operaton, using single stage compress, Ke Yiti
The efficiency and efficiency of high refrigerating circulatory device 200.
In one embodiment of the invention, as depicted in figs. 1 and 2, it is more next in two cylinders（For example, Fig. 1 and figure
The second cylinder 64 in 2）Bottom be provided with bearing（For example, the supplementary bearing 65 in Fig. 1 and Fig. 2）, bearing（That is supplementary bearing 65）'s
Bottom is provided with cover plate 66, cover plate 66 and bearing（That is supplementary bearing 65）Jet chamber 651 is limited jointly.Thus, easy for installation, assembling
Efficiency high and cost is low.
Certainly, the invention is not restricted to this, in other embodiments of the present invention, reference picture 7 is provided between two cylinders
Jet chamber 651 is limited in isolating device, isolating device.Specifically, isolating device includes：Slider 631 and division board 632,
The top of slider 631 and/or bottom-open.Division board 632 is located at the top and/or bottom of slider 631 and and slider
631 limit jet chamber 651 jointly.
For example in the example in figure 7, isolating device keeps apart the first cylinder 62 and the second cylinder 64, and isolating device includes
One slider 631 and a division board 632, the bottom-open of slider 631, division board 632 are located at the bottom of slider 631
Portion and jet chamber 651 is limited jointly with slider 631, now the upper surface of slider 631 and the lower surface of the first cylinder 62
The upper surface of contact, the lower surface of division board 632 and the second cylinder 64.Certainly, in another example of the present invention, every
From the top that plate 632 can also be located at slider 631 to limit jet chamber 651 with slider 631, wherein slider 631
Top is opened wide（It is not shown）.In still other example of the present invention, the top and bottom of slider 631 are opened wide, slider
631 top and bottom can be respectively equipped with a division board 632, and two division boards 632 and slider 631 limit spray jointly
Air cavity 651（It is not shown）.
In one embodiment of the invention, jet chamber 651 is connected by triple valve 5 with reservoir 3 and air jet pipe 1, such as
Shown in Fig. 1, housing 2 is externally provided with the second air intake duct 653, and the second air intake duct 653 is remained with jet chamber 651 to be connected, and second inhales
Tracheae 653 is connected by triple valve 5 with low pressure air suction pipe 31, the air jet pipe 1 of the bottom of reservoir 3, when air conditioner refrigerating, triple valve
5 the second air intake ducts 653 of control are connected with low pressure air suction pipe 31, when air-conditioning heating, second air intake duct 653 of the control of triple valve 5 and
Air jet pipe 1 is connected.Thus, by setting triple valve 5, according to operating mode, it can automatically switch and flow into the refrigeration of above-mentioned jet chamber 651
Agent, is the refrigerant come out from flash vessel 204 or carrys out the refrigerant that flash-pot 201 comes out；Underload is in air-conditioning
During lower operation, the control jet of triple valve 5 chamber 651, which is sucked, carrys out the refrigerant that flash-pot 201 comes out, and above-mentioned twin-stage is rotatably pressed
Second cylinder 64 of contracting machine 100 is unloaded, the compressed gas of the first cylinder 62；When being run under the conditions of air-conditioning is in and heated, triple valve 5
Control jet chamber 651 sucks the refrigerant come out from flash vessel 204, runs the above-mentioned twin-stage of twin-stage rotary compressor 100.
Further, jet chamber 651 has the air entry 652 being connected with triple valve 5, back pressure chamber 644 and the phase of air entry 652
It is logical.Reference picture 5 and Fig. 6, air entry 652 are corresponding with the second air intake duct 653, and air entry 652 is stretched into one end of the second air intake duct 653
Interior and connected with the inside of jet chamber 651, back pressure chamber 644 passes through gas channel as shwon in Figures 5 and 6 and air entry 652
Connection, specifically, gas channel include first passage 6541, second channel 6542 and third channel 6543, first passage 6541
Vertically extend, and the lower end of first passage 6541 is communicated with air entry 652, second channel 6542 prolongs in the horizontal direction
Stretch, one end of second channel 6542 is connected with the upper end of first passage 6541, alternatively, and second channel 6542 is by supplementary bearing 65
Upper surface is downwardly concaved to be formed, and third channel 6543 vertically extends, and lower end and the second channel of third channel 6543
6542 other end connection, the upper end of third channel 6543 is connected with back pressure chamber 644, because the air-breathing of the first cylinder 62 may be led
Cause the pressure oscillation of jet chamber 651, it is possible to cause the back pressure of the second slide plate 643 not enough in Two-stage Compression, by setting back pressure chamber
644 directly connect with air entry 652, are conducive to stablizing the back pressure of the second slide plate 643, it is ensured that the action of the second slide plate 643.
Alternatively, one of cylinder（For example, the first cylinder 62 in Fig. 1）Discharge volume be V1, another cylinder
（For example, the second cylinder 64 in Fig. 1）Discharge volume be V2, wherein, V1/V2=0.45~0.95.Here, it is necessary to explanation
It is that " discharge volume " can be understood as the appearance of the compressed gas from the exhaust outlet discharge on the first cylinder 62 or the second cylinder 64
Product.For different areas and use condition, the difference of V1/V2 ratios will bring different efficiencies, in the temperature of evaporation and condensation
It is poor big（Such as heat pump working condition）When, V1/V2 can take smaller value；When both above-mentioned temperature difference are smaller, higher value, such pin can be taken
To different regions and different use conditions, the efficiency of twin-stage rotary compressor 100 can be improved.
Alternatively, one of cylinder（For example, the first cylinder 62 in Fig. 1）Height be less than another cylinder（For example,
The second cylinder 64 in Fig. 1）Height, bent axle 67 is provided with housing 2, bent axle 67 is provided with axially spaced two bias
Portion（That is the first eccentric part 671 and the second eccentric part 672）, the lower end of bent axle 67 is stretched into two cylinders, and two eccentric parts
Wei Yu not two cylinders（That is the first cylinder 62 and the second cylinder 64）It is interior, one of cylinder（For example, the first cylinder in Fig. 1
62）The offset of interior eccentric part is more than or equal in another cylinder（For example, the second cylinder 64 in Fig. 1）Eccentric part it is inclined
Heart amount.The refrigerants such as R22, the R410A used at present, its pressure limit run determines that its low-pressure stage pressure difference is small, hiigh pressure stage pressure
Poor big, the further flattening of the first cylinder 62 will can improve the efficiency of twin-stage rotary compressor 100, in addition, also causing twin-stage
The structure of rotary compressor 100 is more compact, is conducive to improving the reliability of reliability, particularly bearing and axle.
As shown in figures s-11, the refrigerating circulatory device 200 of embodiment, including evaporator according to a second aspect of the present invention
201st, condenser 202, throttling arrangement 203, flash vessel 204 and according to the twin-stage of above-mentioned first aspect embodiment of the invention rotate
Formula compressor 100.
Condenser 202 is connected with evaporator 201.Throttling arrangement 203 is located between evaporator 201 and condenser 202.Flash distillation
Device 204 is located between throttling arrangement 203 and condenser 202.There is gas returning port 33 and gas outlet on twin-stage rotary compressor 100
21, evaporator 201, condenser 202 are connected with gas returning port 33, gas outlet 21 respectively by four-way valve 206, flash vessel 204 and spray
Tracheae 1 is connected.Further, control valve 207, refrigerating circulatory device 200 can be provided between condenser 202 and flash vessel 204
Further comprise：By-passing valve 205, by-passing valve 205 is in parallel with control valve 207 and flash vessel 204.Wherein, in refrigerating circulatory device
When 200 such as air-conditionings are run under underload, the gas that by-passing valve 205 comes out above-mentioned condenser 202 is not passed through flash vessel
204, and it is bypassed into throttling arrangement 203.Alternatively, as shown in Fig. 1, Fig. 8-Figure 11, gas returning port 33 is located at the top of reservoir 3
Portion, gas outlet 21 is located at the top of housing 2.
When refrigerating circulatory device 200 is air-conditioning, when air conditioner refrigerating works, as shown in figure 8, control valve 207 is closed, bypass
Valve 205 is opened, and the refrigerant of the HTHP come out by the gas outlet 21 of housing 2 enters condenser 202, the system of HTHP
Cryogen becomes liquid refrigerant after the condensation process by condenser 202, liquid refrigerant is flowed through after by-passing valve 205 by throttling
Device 203 is depressured, as low-pressure, liquid refrigerant, and the refrigerant after throttling enters evaporator 201, and refrigerant is in evaporator 201
In be evaporated and exchange heat and become gas, gas refrigerant passes through gas returning port 33 and entered in housing 2.
When air-conditioning heating works, as shown in figure 9, control valve 207 is opened, by-passing valve 205 is closed, and passes through the row of housing 2
The high-temperature high-pressure gas refrigerant that gas port comes out initially enters evaporator 201, becomes after the condensation process by evaporator 201
Cold high pressure liquid refrigerant, liquid refrigerant is depressured by throttling arrangement 203, as low-pressure, liquid refrigerant, alternatively, section
It is capillary or expansion valve to flow device 203, and the refrigerant after throttling enters flash vessel 204 and carries out gas-liquid separation, and gaseous coolant is straight
Connect and flow to gas returning port 33, pure liquid refrigerant enters condenser 202, refrigerant, which is evaporated in condenser 202 after process, to be led to
Gas returning port 33 is crossed to enter in housing 2.
Such as air-conditioning of refrigerating circulatory device 200 according to embodiments of the present invention, by setting above-mentioned first aspect embodiment
Twin-stage rotary compressor 100, when load is smaller, selection single-stage operation, when load is big, run using twin-stage so that
Effectively increase overall performance, reliability and the efficiency of refrigerating circulatory device 200.
In one embodiment of the invention, reference picture 8- Figure 11, refrigerating circulatory device 200 also includes：First throttle is filled
208 and first control valve 209 are put, the control valve 209 of first throttle device 208 and first is respectively provided at control valve 207 and flash vessel
204th, between flash vessel 204 and throttling arrangement 203, control valve 207, first throttle device 208 and (the first control of flash vessel 204
Valve 209) it is in parallel with by-passing valve 205.
As shown in figure 8, the control valve 209 of control valve 207 and first is closed（First control valve 209 can also be not related to）, bypass
Valve 205 is opened, and the high-pressure refrigerant after being compressed through twin-stage rotary compressor 100 flows to condenser 202 through four-way valve 206, then
Throttling arrangement 203 is flowed through through by-passing valve 205, the cold-producing medium stream after throttling expansion is through evaporator 201, after being absorbed heat through evaporator 201,
Return to twin-stage rotary compressor 100.Now, the control jet of triple valve 5 chamber 651 is connected with low pressure air suction pipe 31, the second gas
The pressure of inspiration(Pi) of cylinder 64 is consistent with the pressure of inspiration(Pi) of jet chamber 651, and what back pressure cavity was passed through is low pressure, and the second slide plate 643 is failure to actuate.First
The suction low pressure refrigerant of cylinder 62 is compressed, and realizes single stage compress.During kind of refrigeration cycle, using the loop, refrigerant can be reduced
The pipe arrangement and element flowed through, reduces system flow drag losses, improves system energy efficiency.
As shown in figure 9, by-passing valve 205 is closed, the control valve 209 of control valve 207 and first is opened, through twin-stage rotary compression
High-pressure refrigerant after machine 100 compresses flows to evaporator 201 through four-way valve 206, and the refrigerant come out by evaporator 201 is through throttling
Flash vessel 204 is flowed into after the throttling expansion of device 203, is divided into two-way in the gas-liquid two-phase cold-producing medium of the shwoot of flash vessel 204：Main road
Refrigerant liquid enters condenser 202 after the throttling expansion of first throttle device 208, is carried out in condenser 202 after heat exchange
Become refrigerant gas, then flow into twin-stage rotary compressor 100 to be compressed；The refrigerant gas of subsidiary loop is from flash vessel
204 come out, into jet loop, so as to flow into twin-stage rotary compressor 100.Now, the control of triple valve 5 jet chamber 651 with
Air jet pipe 1 is connected, and the medium pressure gas come out from flash vessel 204 enters jet chamber 651, and the pressure at expulsion of the second cylinder 64 is middle pressure
Gas pressure, twin-stage rotary compressor 100 carries out two stages of compression circulation.
In addition, refrigerating circulatory device 200 further comprises：Water tank（It is not shown）, water tank be connected with evaporator 201 with
Evaporator 201 exchanges heat.Alternatively, refrigerating circulatory device 200 is Teat pump boiler.When refrigerating circulatory device 200 is heat-pump hot-water
During device, evaporator 201 carries out heat exchange with water tank, and system circulation is consistent with above-mentioned refrigeration, heating operations.Pressure difference pressure ratio when heating
It is larger, particularly under low-temperature heating and heat pump working condition, circulated using two stages of compression, system heating capacity can be effectively improved, and carry
Rise system energy efficiency.
As shown in Figure 10, during defrosting, the control valve 209 of by-passing valve 205 and first is closed, through twin-stage rotary compressor 100
High-pressure refrigerant after compression flows to condenser 202 through four-way valve 206, and the refrigerant come out by condenser 202 is through first throttle
Device 208, the low pressure refrigerant after expansion flows into flash vessel 204, and the refrigerant come out from flash vessel 204 is entered by tonifying Qi loop
Enter twin-stage rotary compressor 100.Now, the control jet of triple valve 5 chamber 651 is connected with air jet pipe 1.
Further, the second control valve 2041 is provided between gas returning port 33 and air jet pipe 1.Specifically, the He of air jet pipe 1 is connected
Low pressure air suction pipe 31, and the second control valve 2041 is set between, the second control valve 2041 is opened when only running in defrost mode
Open, closed in other Modal actions, during defrosting, low-temperature refrigerant enters twin-stage rotary compressor 100 through jet loop
The cylinder 64 of jet chamber 651 and second, it is possible to prevente effectively from the second cylinder 64 is likely to occur the feelings of intake negative-pressure in Defrost operation
Condition.In defrosting, high-low pressure pressure difference is small, and pressure ratio is small, if using two stages of compression, easily causing overcompression, causes power consumption to rise,
Using the loop, the generation of such case can be prevented effectively from.
In the description of the invention, it is to be understood that term " " center ", " transverse direction ", " length ", " width ", " thickness ",
" on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " axial direction ", " radial direction ",
The orientation or position relationship of instructions such as " circumferences " are, based on orientation shown in the drawings or position relationship, to be for only for ease of description originally
Invention and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific square
Position construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second ", " the 3rd " are defined
One or more this feature can be expressed or be implicitly included to feature.In the description of the invention, the implication of " multiple "
It is two or more, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (15)
1. a kind of twin-stage rotary compressor, it is characterised in that including：
Air jet pipe；
Housing, the housing is externally provided with reservoir, has jet chamber in the housing, the jet chamber by triple valve with it is described
Reservoir is connected with the air jet pipe, when controlling the triple valve jet chamber is connected with the reservoir, from the storage
Liquid device is passed through the first pressure refrigerant for flowing through the reservoir to the jet intracavitary, controls the triple valve to make the jet chamber
When being connected with the air jet pipe, second pressure refrigerant is passed through from the air jet pipe to the jet intracavitary, the second pressure is cold
The pressure of matchmaker is more than the pressure of the first pressure refrigerant；
Two cylinders, described two cylinders are each provided in the housing and are spaced apart from each other on vertical, in described two cylinders
One of them connected with the jet chamber, another is connected with the reservoir and with the vane slot and compression radially extended
Chamber, the exhaust outlet of the compression chamber is connected with the jet chamber；
Piston, the piston is located in the compression chamber and can rolled along the inwall of the compression chamber；And
Slide plate, the slide plate is movably arranged in the vane slot and outer end and the inwall of the vane slot limit the back of the body jointly
Pressure chamber, the back pressure chamber is connected with the jet chamber, is connected wherein the slide plate is configured to the jet chamber with the reservoir
It is accommodated in when logical inner only to the piston when vane slot is interior, the jet chamber is connected with the air jet pipe.
2. twin-stage rotary compressor according to claim 1, it is characterised in that more next in described two cylinders
Bottom is provided with bearing, and the bottom of the bearing is provided with cover plate, and the cover plate limits the jet chamber jointly with the bearing.
3. twin-stage rotary compressor according to claim 1, it is characterised in that provided with isolation between described two cylinders
The jet chamber is limited in device, the isolating device.
4. twin-stage rotary compressor according to claim 3, it is characterised in that the isolating device includes：
Slider, the top of the slider and/or bottom-open；With
Division board, the division board is located at the top and/or bottom of the slider and limits institute jointly with the slider
State jet chamber.
5. twin-stage rotary compressor according to claim 1, it is characterised in that the jet chamber has and the threeway
The connected air entry of valve, the back pressure chamber is communicated with the air entry.
6. the twin-stage rotary compressor according to any one of claim 1-5, it is characterised in that one of gas
The discharge volume of cylinder is V1, and the discharge volume of another cylinder is V2,
Wherein V1/V2=0.45~0.95.
7. the twin-stage rotary compressor according to any one of claim 1-5, it is characterised in that one of gas
The height of cylinder is less than the height of another cylinder,
Bent axle is provided with the housing, the bent axle is provided with axially spaced two eccentric parts, the lower end of the bent axle
Stretch into described two cylinders, and described two eccentric parts are located in described two cylinders respectively, in one of cylinder
The eccentric part the offset of the eccentric part that is more than or equal in another described cylinder of offset.
8. a kind of refrigerating circulatory device, it is characterised in that including：
Evaporator；
Condenser, the condenser is connected with the evaporator；
Throttling arrangement, the throttling arrangement is located between the evaporator and the condenser；
Flash vessel, the flash vessel is located between the throttling arrangement and the condenser；And
Have on twin-stage rotary compressor according to any one of claim 1-7, the twin-stage rotary compressor
Gas returning port and gas outlet, the evaporator, the condenser are connected with the gas returning port, the gas outlet respectively by four-way valve
Logical, the flash vessel is connected with the air jet pipe.
9. refrigerating circulatory device according to claim 8, it is characterised in that set between the condenser and the flash vessel
There is control valve, the refrigerating circulatory device further comprises：
By-passing valve, the by-passing valve is in parallel with the control valve and the flash vessel.
10. refrigerating circulatory device according to claim 9, it is characterised in that also include：
First throttle device and the first control valve, the first throttle device and first control valve are respectively provided at the control
Between valve and the flash vessel, the flash vessel and the throttling arrangement, the control valve, the first throttle device and described
Flash vessel is in parallel with the by-passing valve.
11. refrigerating circulatory device according to claim 8, it is characterised in that the throttling arrangement is capillary or expansion
Valve.
12. the refrigerating circulatory device according to any one of claim 8-11, it is characterised in that the gas returning port and described
The second control valve is provided between air jet pipe.
13. refrigerating circulatory device according to claim 8, it is characterised in that the refrigerating circulatory device is air-conditioning.
14. refrigerating circulatory device according to claim 8, it is characterised in that further comprise：
Water tank, the water tank be connected with the evaporator with the evaporator heat exchange.
15. refrigerating circulatory device according to claim 14, it is characterised in that the refrigerating circulatory device is heat-pump hot-water
Device.
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| CN201410074761.1A CN103821716B (en) | 2014-03-03 | 2014-03-03 | Twin-stage rotary compressor and the refrigerating circulatory device with it |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410074761.1A CN103821716B (en) | 2014-03-03 | 2014-03-03 | Twin-stage rotary compressor and the refrigerating circulatory device with it |
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| CN103821716B true CN103821716B (en) | 2017-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4047209A4 (en) * | 2020-10-21 | 2023-06-21 | Anhui Meizhi Precision Manufacturing Co., Ltd. | Compressor and refrigeration apparatus |
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| CN105201836B (en) * | 2014-06-27 | 2018-01-02 | 珠海格力电器股份有限公司 | Air-conditioning system, air-conditioning system gas supplementary structure and double-stage compressor |
| CN105443383B (en) * | 2014-09-01 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure, double-stage compressor and air-conditioning system |
| CN104728109B (en) * | 2015-02-03 | 2017-03-22 | 广东美芝制冷设备有限公司 | Air conditioning system and rotating compressor component thereof |
| CN104879942B (en) * | 2015-05-13 | 2017-06-16 | 广东美芝制冷设备有限公司 | The cooling and warming circulatory system |
| CN105134597B (en) * | 2015-08-20 | 2018-09-11 | 广东美芝制冷设备有限公司 | Compressor and air conditioner |
| CN105114306B (en) * | 2015-09-01 | 2018-02-13 | 广东美芝制冷设备有限公司 | Rotary compression thermomechanical components and there is its freezing cycle device |
| CN105201838A (en) * | 2015-10-28 | 2015-12-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor compressor |
| CN105650925B (en) * | 2016-01-14 | 2018-03-30 | 安徽美芝精密制造有限公司 | refrigeration system and its control method |
| CN105757798B (en) * | 2016-03-03 | 2018-11-27 | 美的集团武汉制冷设备有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN106014990A (en) * | 2016-07-15 | 2016-10-12 | 上海日立电器有限公司 | Double-cylinder rotary compressor and air conditioning system thereof |
| CN106762642A (en) * | 2016-12-05 | 2017-05-31 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN107178503B (en) * | 2017-07-28 | 2021-06-08 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating device |
| CN111141045B (en) * | 2018-11-06 | 2021-11-02 | 广东美芝制冷设备有限公司 | Refrigeration system |
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| JP5327089B2 (en) * | 2006-03-03 | 2013-10-30 | ダイキン工業株式会社 | Rotary compressor |
| CN102927008B (en) * | 2011-08-10 | 2015-06-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, and air conditioning system having it |
| CN202707496U (en) * | 2012-07-30 | 2013-01-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable-capacity rotary compressor |
| CN203335401U (en) * | 2013-03-26 | 2013-12-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage enthalpy-added rotor compressor, and air conditioner and heat-pump water heater with same |
| CN203285687U (en) * | 2013-06-05 | 2013-11-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| CN203756524U (en) * | 2014-03-03 | 2014-08-06 | 广东美芝制冷设备有限公司 | Double-level rotating compressor and refrigerating cycling device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4047209A4 (en) * | 2020-10-21 | 2023-06-21 | Anhui Meizhi Precision Manufacturing Co., Ltd. | Compressor and refrigeration apparatus |
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