CN207815765U - Air-conditioning system - Google Patents

Abstract

The utility model discloses a kind of air-conditioning systems to include：Compressor, compressor include the first cylinder and the second cylinder, the first cylinder have the first air inlet, first row gas port and can release slide plate chamber, the second cylinder have the second air inlet, second exhaust port and can release plunger cavity；Commutate valve group, the valve group that commutates includes the first four-way valve, second four-way valve, first triple valve, second triple valve, first four-way valve is used to low pressure refrigerant and high-pressure refrigerant corresponding to supply to the slide plate chamber of the first cylinder, first air entry, first triple valve is for supplying middle compression refrigerant or low pressure refrigerant to the second air entry, so that compressor switches between independent compression operating mode and transfiguration compression work pattern, second four-way valve switches to refrigeration mode or heating mode for controlling, second triple valve is for supplying high-pressure refrigerant or low pressure refrigerant to the plunger cavity of the second cylinder, so that the second cylinder switches between compression chamber all participates in compression and the two patterns are compressed in subparticipation.

Description

Air-conditioning system

Technical field

The utility model is related to Compressor Technology fields, in particular to a kind of air-conditioning system.

Background technology

In the related technology, positive displacement compressor be a kind of tool there are two and more than two compression chambers compressor, typically There are two the rotary compressors of cylinder for tool.When cooling load is larger, compressor operates (two cylinders while work with full capacity Make)；When cooling load is smaller, compressor operates (only one of which cylinder operation, another does not work) with portion capacity. It, can the existing high frequent start and stop in sub-load to avoid constant speed air-conditioning system using the air-conditioning system of positive displacement compressor Problem is reduced with part-load efficiency, SEER (refrigeration season energy efficiency ratio) is far above constant speed air-conditioning system, although Less than frequency-conversion air-conditioning system, but its cost is far below frequency-conversion air-conditioning system.It has been taken into account calmly it may be said that positive displacement compressor is one kind The low cost of fast compressor and a kind of efficient compromise proposal of frequency-changeable compressor are the one of Compressor Technology development in recent years A important directions.

Independent compression formula compressor be also a kind of tool there are two and more than two compression chambers compressor, typically have The rotary compressor of two cylinders.The low-pressure gas of one of compression chamber Compression Evaporation device outlet, another compression chamber compression Medium pressure gas after flash vessel separation or economizer heat exchange are evaporated after level-one throttles.Independent compression cycle can reduce throttling damage It loses, reduces the mass dryness fraction into the refrigerant of evaporator, evaporator heat transfer efficiency is improved, to improve air-conditioning system in specific work Ability under condition and efficiency.Existing compressor is usually merely one in independent compression formula compressor and positive displacement compressor The advantages of planting, two kinds of compress techniques cannot be taken into account, therefore can be further perfect.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries Refrigeration or heating efficiency and the sub-load for taking into account transition season can be improved under specific operation by going out one kind, to improve The compressor of annual energy efficiency.

The utility model is that the applicant is made based on following cognition：

Double-cylinder variable-capacity compressor and twin-tub independent compression formula compressor were not only had any different, but also were related.Double-cylinder variable-capacity compressor With having in common that for twin-tub independent compression formula compressor：The exhaust of two cylinders all mixes in compression case body, and then one Play the exhaust outlet of discharge compressor.Difference is：At work, the air entry state of two cylinders is complete for double-cylinder variable-capacity compressor Exactly the same, the step-up ratio of two cylinders is identical, and two cylinders are equivalent to parallel running；And twin-tub independent compression formula compressor is in work When making, the first cylinder is from low pressure air suction, and for the second cylinder from some intermediate pressure air-breathing, the step-up ratio of two cylinders is different.Twin-tub Positive displacement compressor and twin-tub independent compression formula compressor respectively have advantage and disadvantage.Therefore, it is badly in need of providing a kind of compressor, makes it can be with Independent compression mode operates, but can with become capacitance type operating, can be improved when determining operating mode refrigeration (heating) ability or efficiency and Season energy efficiency can be taken into account, the advantages of to give full play to two kinds of Compressor Technologies.

Include according to the air-conditioning system of the utility model embodiment：Compressor, the compressor include shell, total exhaust Mouth, motor, the first cylinder and the second cylinder, first cylinder have the first air inlet first row gas port and can release slide plate Chamber, second cylinder have the second air inlet, second exhaust port and can release plunger cavity；Commutate valve group, the reversal valve Group includes the first four-way valve, the second four-way valve, the first triple valve, the second triple valve, and first four-way valve is used for low pressure system Cryogen or high-pressure refrigerant correspond to slide plate chamber, first air entry of the supply to the first cylinder, with make the first cylinder in compression chamber Participate in compression and be not involved in compress the two patterns between switch, second four-way valve for control switch to refrigeration mode or Heating mode, first triple valve is for supplying middle compression refrigerant or low pressure refrigerant to the second air entry, so that described Compressor switches between independent compression operating mode and transfiguration compression work pattern, and second triple valve is used to suppress height Cryogen or low pressure refrigerant are supplied to the plunger cavity of the second cylinder, so that the second cylinder all participates in compression and part in compression chamber Participation switches between compressing the two patterns.

According to the air-conditioning system of the utility model embodiment, switch the system of the first cylinder and the second cylinder by the valve group that commutates Refrigerant pressure, so that compressor and air-conditioning system can be run under independent compression and transfiguration compression both of which, and at each The compression chamber that cylinder can also be controlled under pattern all participates in compression, subparticipation compression or is not involved in compression, makes convenient for basis Compressor is adjusted with operating mode to be under suitable operating mode.As a result, when refrigeration or heating load are larger, compressor is with twin-tub Full capacity mode is run, to meet the requirement of indoor hot and cold load；When refrigeration or heating load are smaller, compressor is with single cylinder Varying capacity mode is run, and to reduce the start-stop time of compressor, improves the season energy efficiency of air-conditioning system；When needs are in low ring When being heated at a temperature of border, compressor is run in a manner of independent compression, to improve the heating capacity under heating efficiency and worst cold case.

According to the air-conditioning system of the utility model one embodiment, further include：Outdoor heat exchanger, the outdoor heat exchanger One end is connected by second four-way valve with the compressor；First throttle element, one end of the first throttle element with The other end of the outdoor heat exchanger is connected；There is the first communication port, the second communication port and third to connect for flash vessel, the flash vessel Port, the first communication port of the flash vessel are connected with the other end of the first throttle element, second communication port and institute The first triple valve is stated to be connected with for compression refrigerant in compressor supply；Second restricting element, second restricting element One end is connected with the third connecting mouth of the flash vessel；And indoor heat exchanger, one end of the indoor heat exchanger and described the The other end of two restricting elements is connected, and the other end of the indoor heat exchanger is connected with second four-way valve, and the described 1st Port valve, the second four-way valve, the first triple valve, the second triple valve the interface of logical low pressure refrigerant connect together.

According to the air-conditioning system of the utility model one embodiment, further include：Outdoor heat exchanger, the outdoor heat exchanger One end is connected by second four-way valve with the compressor；There is the first port, second to lead to for economizer, the economizer Mouth, third connectivity mouth and the 4th port, the third connectivity mouth and the 4th port are connected with the heat exchanger tube of the economizer, institute State the second port for for the compressor supply in compression refrigerant；Indoor heat exchanger, first port and the first segment One end of fluid element connects, and the other end of the first throttle element is selectively changed with the indoor heat exchanger and the outdoor One in hot device is connected, the third connectivity mouth switchably with one in the indoor heat exchanger and the outdoor heat exchanger It is connected, and the third connectivity mouth is connected with the other end of the first throttle element, the 4th interface passes through the second throttling member Part is switchably connected with one in the indoor heat exchanger and the outdoor heat exchanger；Under refrigeration mode, described first is logical Mouthful and the third connectivity mouth is connected with the outdoor heat exchanger and the 4th port is connected with the indoor heat exchanger, heat Under pattern, first port and the third connectivity mouth are connected with the outdoor heat exchanger and the 4th port and the room Interior heat exchanger is connected, first four-way valve, the second four-way valve, the first triple valve, the second triple valve logical low pressure refrigerant Interface connects together.

In some embodiments, first triple valve is with first to third connector, first connector and institute The third connector for stating the first four-way valve is connected, and second connector is used to be connected with the flash vessel or the economizer, The third connector is connected with second air entry, and first triple valve is configured in the first connected state and second It can be switched between connected state；First connector is closed under the first connected state, second connector and described the Three connectors are connected, and second connector is closed under the second connected state, and first connector is connect with the third Mouth is connected.

Optionally, first triple valve includes two shut-off valves, and one end of one of shut-off valve is formed as the first company One end of interface and another shut-off valve is formed as the second connector, the other end connection of two shut-off valve and to be collectively formed be the Three connectors.

Optionally, first triple valve includes shut-off valve and check valve, and one end of wherein check valve is formed as the first company One end of interface and shut-off valve is formed as the second connector, and the other end of the shut-off valve and the other end of check valve are connected and be total to With third connector is formed as, the check valve is connected from described one end to the other end.

In some embodiments, second four-way valve has first to fourth communication port, first communication port and institute The total exhaust outlet for stating compressor is connected, and second communication port is the third communication port, described for being connect with outdoor heat exchanger First connector, the third interface are connected with each other logical, and the 4th communication port with indoor heat exchanger for connecting, and described second Four-way valve is configured to can be switched between the first connected state and the second connected state；Described first under the first connected state Communication port is connected with second communication port, the third communication port is connected with the 4th communication port, in the second connected state Under first communication port is connected with the 4th communication port, second communication port is connected with the third communication port.

In some embodiments, second triple valve has first to connect mouth to third, and described first connects mouth and institute The first interface for stating the first four-way valve is connected, and described second connects mouth, the third interface, first connector, described the Three communication ports are connected, and the third connects mouth and is connected with the plunger cavity, and second triple valve is configured in the first connection It can be switched between state and the second connected state；Described first connects mouth closing under the first connected state, and described second connects Mouth connects mouth with the third and is connected, and described second connects mouth closing under the second connected state, and described first connects mouth and institute Third connection mouth is stated to be connected.

In some embodiments, further include gas-liquid separator, the import of the gas-liquid separator and second four-way valve Third communication port be connected, the gas-liquid separator outlet respectively with the third interface of first four-way valve, described first First connector of triple valve, the second connection mouth of second triple valve are connected.

According to the air-conditioning system of the utility model one embodiment, under independent compression operating mode, second cylinder The volume for participating in the compression chamber of compression is V2 ', and the volume of the compression chamber of first cylinder is V1, is met：V2 '/V1= 5%-30%, preferably V2 '/V1=10%.

According to the air-conditioning system of the utility model one embodiment, under transfiguration operating mode, second cylinder participates in Whole volumes of the compression chamber of compression are V2, and the volume of the compression chamber of first cylinder is V1, is met：V2/V1=30%- 70%, preferably V2/V1=40%.

According to the air-conditioning system of the utility model one embodiment, under transfiguration operating mode, second cylinder participates in Whole volumes of the compression chamber of compression are V2, and the volume of the compression chamber of first cylinder is V1, V1+V2=(1.3-1.7) V1, Preferably V1+V2=1.4V1.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description In become apparent, or recognized by the practice of the utility model.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment Become apparent and is readily appreciated that, wherein：

Fig. 1 is the schematic diagram according to the air-conditioning system of the utility model first embodiment.

Fig. 2 be according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder part Divide the schematic diagram for the independent compression refrigeration mode for participating in compression.

Fig. 3 according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder portion Participate in the schematic diagram under the independent compression heating mode of compression.

Fig. 4 is that work in the first cylinder according to the air-conditioning system of the utility model first embodiment all complete with the second cylinder Portion participates in the schematic diagram under the independent compression refrigeration mode of compression.

Fig. 5 is that work in the first cylinder according to the air-conditioning system of the utility model first embodiment all complete with the second cylinder Portion participates in the schematic diagram under the independent compression heating mode of compression.

Fig. 6 is to work in only the second cylinder portion according to the air-conditioning system of the utility model first embodiment to participate in compression Schematic diagram under transfiguration refrigeration mode.

Fig. 7 is to work in only the second cylinder portion according to the air-conditioning system of the utility model first embodiment to participate in compression System flow chart under transfiguration heating mode.

Fig. 8 is to work in only the second cylinder according to the air-conditioning system of the utility model first embodiment all to participate in compression Schematic diagram under transfiguration refrigeration mode.

Fig. 9 is to work in only the second cylinder according to the air-conditioning system of the utility model first embodiment all to participate in compression System flow chart under transfiguration heating mode.

Figure 10 be according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder Schematic diagram under the transfiguration refrigeration mode of subparticipation compression.

Figure 11 be according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder System flow chart under the transfiguration heating mode of subparticipation compression.

Figure 12 be according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder All participate in the schematic diagram under the transfiguration refrigeration mode of compression.

Figure 13 be according to the air-conditioning system of the utility model first embodiment work in the first cylinder all with the second cylinder All participate in the system flow chart under the transfiguration heating mode of compression.

Figure 14 is the schematic diagram according to the air-conditioning system of the utility model second embodiment (by the 1st of first embodiment the Port valve is substituted for two shut-off valves).

Figure 15 is the schematic diagram according to the air-conditioning system of the utility model 3rd embodiment (by the 1st of first embodiment the Port valve is substituted for shut-off valve and check valve).

Figure 16 is to work in schematic diagram under refrigeration mode (by according to the air-conditioning system of the utility model fourth embodiment The flash evaporation of one embodiment is substituted for economizer).

Figure 17 is to work in schematic diagram under heating mode (by according to the air-conditioning system of the utility model fourth embodiment The flash evaporation of one embodiment is substituted for economizer).

Reference numeral：

Air-conditioning system 100,

Compressor 1, total exhaust outlet 1d, motor 2, the first cylinder 3, the first air entry 3s, first row gas port 3d, slide plate chamber 3c, the second cylinder 4, the second air entry 4s, second exhaust port 4d, plunger cavity 4c, the first four-way valve 5, first interface 5d, second connects Mouthful 5c, the third interface triple valve 6 of 5s, the 4th interface 5e, first, the first connector 6a, the second connector 6b, third connector 6c, gas-liquid separator 7, the second four-way valve 8, the first communication port 8d, the second communication port 8c, third communication port 8s, the 4th communication port 8e, outdoor heat exchanger 9, outdoor fan 10, first throttle element 11, flash vessel 12, the first communication port 12c, the second communication port 12a, third connecting mouth 12b, the second restricting element 13, indoor heat exchanger 14, indoor fan 15, the second triple valve 16, first connects Port 16a, second connects mouth 16b, and third connects mouth 16c, the first shut-off valve 17, the second shut-off valve 18, check valve 19, economizer 20, the first port 20a, the second port 20b, third connectivity mouth 20c, the 4th port 20d.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

Referring to Fig. 1 to Figure 17 detailed descriptions according to the air-conditioning system 100 of the utility model embodiment.

Include according to the air-conditioning system 100 of the utility model embodiment：Compressor 1 and commutation valve group, compressor 1 include the One cylinder 3 and the second cylinder 4, the first cylinder 3 have the first air inlet 3s, first row gas port 3d and can release slide plate chamber 3c, Second cylinder 4 have the second air inlet 4s, second exhaust port 4d and can release plunger cavity 4c.The valve group that commutates includes the first four-way Valve 5, the second four-way valve 8, the first triple valve 6, the second triple valve 16, the first four-way valve 5 are used for low pressure refrigerant or high compacting Cryogen corresponds to slide plate chamber 3c, first air entry 3s of the supply to the first cylinder 3, so that the first cylinder 3 participates in compressing in compression chamber And be not involved in compress the two patterns between switch, the first triple valve 6 be used for by middle compression refrigerant or low pressure refrigerant supply to Second air entry 4s, so that compressor 1 switches between independent compression operating mode and transfiguration compression work pattern, the second four-way Valve 8 switches to refrigeration mode or heating mode for controlling, and the second triple valve 16 is used for high-pressure refrigerant or low pressure refrigerant Supply to the second cylinder 4 plunger cavity 4c so that the second cylinder 4 compression chamber all participate in compression and subparticipation compress this two Switch between a pattern.

According to the air-conditioning system 100 of the utility model first embodiment, by commutating, valve group switches the first cylinder 3 and second The refrigerant pressure of cylinder 4, so that compressor 1 and air-conditioning system 100 can be under independent compressions and transfiguration compression both of which Operation, and the compression chamber that can also control cylinder in each mode all participates in compression, subparticipation compression or is not involved in pressure Contracting is in convenient for adjusting compressor 1 according to applying working condition under suitable operating mode.As a result, when refrigeration or heating load are larger When, compressor 1 is run in a manner of twin-tub full capacity, to meet the requirement of indoor hot and cold load；When refrigeration or heating load are smaller When, compressor 1 is run in a manner of single cylinder varying capacity, to reduce the start-stop time of compressor 1, improves the season of air-conditioning system 100 Energy efficiency；When needing to heat at low ambient temperatures, compressor 1 is run in a manner of independent compression, to improve heating efficiency And the heating capacity under worst cold case.

According to the air-conditioning system 100 of the utility model one embodiment, air-conditioning system 100 further includes：Outdoor heat exchanger 9, First throttle element 11, flash vessel 12, the second restricting element 13 and indoor heat exchanger 14.One end of outdoor heat exchanger 9 passes through Second four-way valve 8 is connected with compressor 1, and one end of first throttle element 11 is connected with the other end of outdoor heat exchanger 9, flash vessel 12 have the first communication port 12c, the second communication port 12a and third connecting mouth 12b, the first communication port 12c of flash vessel 12 and the The other end of one restricting element 11 is connected, and the second communication port 12a is connected with the first triple valve 6 with to be suppressed in the supply of compressor 1 Cryogen, one end of the second restricting element 13 are connected with the third connecting mouth 12b of flash vessel 12, one end of indoor heat exchanger 14 and the The other end of two restricting elements 13 is connected, and the other end of indoor heat exchanger 14 is connected with the 4th communication port 8e of the second four-way valve 8, First four-way valve 5, the second four-way valve 8, the first triple valve 6, the second triple valve 16 the interface of logical low pressure refrigerant be connected to one It rises.

As a result, by means of the first four-way valve 5, the connected state of the second four-way valve 8, the first triple valve 6, the second triple valve 16 Switching, realize 100 inner refrigerant flow path of air-conditioning system commutation, to make air-conditioning system 100 that can work in 12 kinds of tools respectively The operational mode of body：First cylinder 3 all with 4 subparticipation of the second cylinder compression independent compression refrigeration mode, the first cylinder 3 All pressure is all participated in the independent compression heating mode, the first cylinder 3 and the second cylinder 4 of 4 subparticipation of the second cylinder compression The independent compression refrigeration mode of contracting, the first cylinder 3 and the second cylinder 4 all participate in the independent compression heating mode of compression, only the The transfiguration refrigeration mode of two cylinders, 4 subparticipation compression, the transfiguration heating mode of 4 subparticipation of only the second cylinder compression, second Cylinder 4 all participates in transfiguration heating mode, the first cylinder 3 that the transfiguration refrigeration mode of compression, the second cylinder 4 all participate in compression With the transfiguration of the transfiguration refrigeration mode, the first cylinder 3 and 4 subparticipation of the second cylinder compression of 4 subparticipation of the second cylinder compression Heating mode, the first cylinder 3 and the second cylinder 4 all participate in transfiguration refrigeration mode, the first cylinder 3 and the second cylinder 4 of compression All participate in the transfiguration heating mode of compression.

Optionally, flash vessel 12 can also use economizer 20 to substitute, and specifically, economizer 20 has the first port 20a, the Two port 20b, third connectivity mouth 20c and the 4th port 20d, the heat exchanger tube of third connectivity mouth 20c and the 4th port 20d and economizer 20 It is connected, compression refrigerant during the second port 20b is used to supply for compressor 1, the first port 20a and the one of first throttle element 11 End is connected, and the other end of first throttle element 11 is selectively connected with one in indoor heat exchanger 14 and outdoor heat exchanger 9, Third connectivity mouth 20c is switchably connected with one in indoor heat exchanger 14 and outdoor heat exchanger 9, and third connectivity mouth 20c and The other end of one restricting element 11 is connected, the 4th port 20d by the second restricting element 13 switchably with indoor heat exchanger 14 It is connected with one in outdoor heat exchanger 9；Under refrigeration mode, the first port 20a and third connectivity mouth 20c with outdoor heat exchanger 9 It is connected and the 4th port 20d is connected with indoor heat exchanger 14, under heating mode, the first port 20a and third connectivity mouth 20c is and room External heat exchanger 9 is connected and the 4th port 20d is connected with indoor heat exchanger 14, the first four-way valve 5, the second four-way valve 8, the first threeway Valve 6, the second triple valve 16 the interface of logical low pressure refrigerant connect together.

As shown in Figure 1, the first four-way valve 5 has first to fourth interface, it is connected in first interface 5d and shell, second connects Mouth 5c is connected with slide plate chamber 3c, and for leading to low pressure refrigerant, the 4th interface 5e's third interface 5s is connected with the first air entry 3s, the One four-way valve 5 is configured to can be switched between the first connected state and the second connected state；First under the first connected state Interface 5d is connected with second interface 5c, third interface 5s is connected with the 4th interface 5e, the first interface 5d under the second connected state It is connected with the 4th interface 5e, second interface 5c is connected with third interface 5s.

In some embodiments, the first triple valve 6 is with first to third connector, the first connector 6a and the first four-way The third interface 5s of valve 5 is connected, and the second connector 6b with flash vessel 12 or economizer 20 for being connected, third connector 6c and the Two air entry 4s are connected, and the first triple valve 6 is configured to can be switched between the first connected state and the second connected state； The first connector 6a is closed under one connected state, and the second connector 6b is connected with third connector 6c, under the second connected state Second connector 6b is closed, and the first connector 6a is connected with third connector 6c.

Certainly, the utility model is not limited to this, and as shown in figure 14, the first triple valve 6 includes two shut-off valves, wherein one One end of a shut-off valve is formed as the first connector 6a and one end of another shut-off valve is formed as the second connector 6b, and two are cut Only the other end of valve is connected and is collectively formed as third connector 6c.

As shown in figure 15, in still further embodiments, the first triple valve 6 includes shut-off valve and check valve 19, wherein unidirectionally One end of valve 19 is formed as the first connector 6a and one end of check valve 19 is formed as the second connector 6b, the other end of shut-off valve It connect and is collectively formed with the other end of check valve 19 as third connector 6c, check valve 19 is connected from one end to the other end.

In some embodiments, the second four-way valve 8 has first to fourth communication port, the first communication port 8d and compressor 1 Total exhaust outlet 1d be connected, the second communication port 8c for being connect with outdoor heat exchanger 9, third communication port 8s, the first connector 6a, Third interface 5s is connected with each other logical, and for being connect with indoor heat exchanger 14, the second four-way valve 8 is configured to the 4th communication port 8e It can be switched between first connected state and the second connected state；The first communication port 8d and the second communication port under the first connected state 8c is connected, third communication port 8s is connected with the 4th communication port 8e, the circulations of the first communication port 8d and the 4th under the second connected state Mouth 8e is connected, the second communication port 8c is connected with third communication port 8s.

As shown in Figure 1, the second triple valve 16 has first to connect mouth to third, first connects mouth 16a and the first four-way valve 5 First interface 5d be connected, second, which connects mouth 16b, third interface 5s, the first connector 6a, third communication port 8s, is connected, third It connects mouth 16c with plunger cavity 4c to be connected, the second triple valve 16 is configured between the first connected state and the second connected state It is changeable；First connects mouth 16a closings under the first connected state, and the second connection mouth 16b connects mouth 16c with third and is connected, Second connects mouth 16b closings under second connected state, and the first connection mouth 16a connects mouth 16c with third and is connected.

Wherein, the first four-way valve 5, the second four-way valve 8, the first triple valve 6, the second triple valve 16 can be electromagnetic coil controls The valve of system is in the second connected state when being powered in the first connected state, electromagnetic coil when electromagnetic coil no power. It can be the valve of other any way controls, such as can be hydraulic pressure, air pressure or the valve manually controlled.

Further, further include gas-liquid separator 7, the third communication port of the import of gas-liquid separator 7 and the second four-way valve 8 8s be connected, gas-liquid separator 7 outlet respectively with the third interface 5s of the first four-way valve 5, the first connector of the first triple valve 6 6a, the second connection mouth 16b of the second triple valve 16 are connected.

According to the air-conditioning system 100 of the utility model one embodiment, under independent compression operating mode, the second cylinder 4 The volume for participating in the compression chamber of compression is V2 ', and the volume of the compression chamber of the first cylinder 3 is V1, is met：V2 '/V1=5%- 30%, preferably V2 '/V1=10%.

According to the air-conditioning system 100 of the utility model one embodiment, under transfiguration operating mode, the second cylinder 4 participates in Whole volumes of the compression chamber of compression are V2, and the volume of the compression chamber of the first cylinder 3 is V1, is met：V2/V1=30%- 70%, preferably V2/V1=40%.

According to the air-conditioning system 100 of the utility model one embodiment, under transfiguration operating mode, the second cylinder 4 participates in Whole volumes of the compression chamber of compression are V2, and the volume of the compression chamber of the first cylinder 3 is V1, V1+V2=(1.3-1.7) V1, excellent Selection of land V1+V2=1.4V1.

As shown in figure 16, flash vessel 12 can also be replaced according to the air-conditioning system 100 of the utility model one embodiment At economizer 20, to further increase the application range of air-conditioning system 100.

Referring to Fig. 1 to Figure 17 detailed descriptions according to the air-conditioning system 100 of first to fourth embodiment of the utility model.

First embodiment

As shown in Figure 1, air-conditioning system 100 is by compressor 1, and the first four-way valve 5, the first triple valve 6, gas-liquid separator 7, Two four-way valves 8, outdoor heat exchanger 9, outdoor fan 10, first throttle element 11, flash vessel 12, the second restricting element 13 are indoor Fan 14, indoor heat exchanger 15 and the second triple valve 16 composition.The inside of wherein compressor 1 includes motor 2, the first cylinder 3 With the second cylinder 4.Motor 2, the first cylinder 3 and the second cylinder 4 are mounted on same root bent axle, when the rotor of motor 2 rotates, band The rotor rotation of dynamic first cylinder 3 and the second cylinder 4, to be realized to refrigerant in the inside of the first cylinder 3 and the second cylinder 4 The compression of gas.

Second four-way valve 8 tool is the first communication port 8d, the second communication port 8c, third communication port respectively there are four communication port 8s and the 4th communication port 8e.When the second four-way valve 8 is in the first connected state, the first communication port 8d and the second communication port 8c connect It is logical, third communication port 8s and the 4th communication port 8e connections, when the second four-way valve 8 is in the second connected state, the first communication port 8d and the 4th communication port 8e connections, third communication port 8s and the second communication port 8c connections.

First four-way valve 5 also has there are four interface, is first interface 5d respectively, second interface 5c, third interface 5s and the Four interface 5e.When the first four-way valve 5 is in the first connected state, first interface 5d is connected to second interface 5c, third interface 5s and the 4th interface 5e connections, when the first four-way valve 5 is in the second connected state, first interface 5d and the 4th interface 5e connect Logical, third interface 5s is connected to second interface 5c.

There are three connectors for first triple valve 6 tool, are the first connector 6a, third connector 6c and the second connector respectively 6b.When the first triple valve 6 is in the first connected state, third connector 6c and the second connector 6b connections, the first connector 6a is in one end closed state, when the first triple valve 6 is in the second connected state, third connector 6c and the first connector 6a Connection, the second connector of interface 6b are in one end closed state.

Second triple valve 16 tool is the first connection mouth 16a respectively, the second connection mouth 16b and third connect there are three mouth is connected Port 16c.When the second triple valve 16 is in the first connected state, 1 third connector 6c and 1 second connector 6b connections, the One connection mouth 16a be in one end closed state, when the second triple valve 16 be in the second connected state, third connection mouth 16c with First connects mouth 16a connections, and the second connection mouth 16b is in one end closed state.

First cylinder 3 is can to determine its cylinder whether to work by controlling the pressure of slide plate chamber 3c.First cylinder 3 With the first air entry 3s, first row gas port 3d and slide plate chamber 3c.The 4th interface 5e of first air entry 3s and the first four-way valve 5 It communicating, first row gas port 3d is connected to the inner space of compressor 1, and slide plate chamber 3c is drawn out to the outside of compressor 1 by pipeline, And it is connected with the second interface 5c of the first four-way valve 5.Unlike the cylinder composition of common compressor 1, described first Without spring in the sliding vane groove of cylinder 3.When slide plate chamber 3c leads to high pressure, the slide plate of first cylinder 3 is pressed in cylinder Rotor on (not shown), at this time the first cylinder 3 can work normally (participate in gas compression), when slide plate chamber 3c leads to low pressure When, the slide plate of first cylinder 3 is unable to the rotor (not shown) in compression cylinder, and the first cylinder 3 does not work (no at this time It can participate in gas compression).When the first cylinder 3 participates in gas compression, gas is sucked by the first air entry 3s, compressed gas It is discharged into the shell of compressor 1 by first row gas port 3d, and compressor 1 is discharged via total exhaust outlet 1d of compressor 1.When When one cylinder 3 participates in gas compression, whole compression chamber volumes are indicated with V1.

Second cylinder 4 is that bypass is exhausted by plunger, to realize the cylinder of operation at part load.Second cylinder 4 have the second air entry 4s, second exhaust port 4d, and the plunger cavity 4c being arranged on partition board in the cylinder or cylinder lower bearing. The inner space of the third connector 6c connections of second air entry 4s and the first triple valve 6, second exhaust port 4d and compressor 1 connects Logical, plunger cavity 4c is drawn out to the outside of compressor 1 by pipeline, and connects mouth 16c with the third of the second triple valve 16 and be connected. Plunger (not shown) is housed, plunger cavity 4c, which is configured to plunger in the case of logical high pressure, to be blocked up in the epicoele of plunger cavity 4c The firmly by-pass prot (not shown) of the second cylinder 4.

When the plunger cavity 4c of the second cylinder 4 leads to high pressure, the plunger in plunger cavity 4c is under the pressure effect of high pressure gas It moves up, blocks the by-pass prot of cylinder completely.For gas by the second air entry 4s suckings, the gas after compression, boosting is logical at this time It crosses second exhaust port 4d to be discharged into the shell of compressor 1, compressor 1 finally is discharged via total exhaust outlet 1d of compressor 1.Herein In the case of kind, whole volumes of the compression chamber of the second cylinder 4 both participate in gas compression, i.e. the second cylinder 4 is run with full load.The Compression chamber volume when two cylinders 4 are run with full load is indicated with V2.

When the plunger cavity 4c of the second cylinder 4 leads to low pressure, the plunger in plunger cavity 4c is fallen downwards under gravity, The by-pass prot of second cylinder 4 is opened.At this point, after gas is sucked by the second air entry 4s, portion gas is direct from by-pass prot place The air entry (concrete structure is being not shown in figure) of compressor is bypassed back, remaining gas then after compression, is arranged from exhaust outlet 4d In the shell for entering compressor 1, compressor 1 finally is discharged via total exhaust outlet 1d of compressor 1.In this case, the second gas Gas compression only is taken part in from by-pass prot to the volume second exhaust port 4d in cylinder 4, and from the second air entry 4s to side Volume of cylinder between through-hole is not engaged in gas compression, i.e., the second cylinder 4 is with operation at part load.Second cylinder 4 is with part Compression chamber volume when load operation is indicated with V2 '.

Gas-liquid separator 7 plays gas-liquid separation, can store and not yet be evaporated completely from the part that heat exchanger comes Refrigerant liquid, it is ensured that the refrigerant for sucking the air entry of cylinder is gas, prevents hydraulic compression.

Flash vessel 12 is two-way flash vessel, has the second communication port 12a, third connecting mouth 12b and the first communication port 12c.The second connector 6b connections of second communication port 12a and the first triple valve 6, third connecting mouth 12b and the second restricting element 13 are connected, and the first communication port 12c is connected with first throttle element 11.Liquid can enter from third connecting mouth 12b, from the first connection Mouth 12c outflows can also enter from the first communication port 12c, be flowed out from third connecting mouth 12b.

Air-conditioning system 100 as shown in Figure 1, according to the second four-way valve 8, the first four-way valve 5, the first triple valve the 6, the 2nd 3 The difference of the working condition of port valve 16 can work in 12 kinds of different operating modes respectively, be carried out referring to Fig. 2-Figure 13 detailed It describes in detail bright.

The independent compression refrigeration mode that (1) first cylinder 3 is all compressed with 4 subparticipation of the second cylinder

When the first four-way valve 5, the second four-way valve 8, the first triple valve 6, the second triple valve 16 are in the first connected state When, the air-conditioning system 100 of first embodiment works in the independent pressure that the first cylinder 3 is all compressed with 4 subparticipation of the second cylinder Contracting refrigeration mode.

As shown in Fig. 2, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the second connector 6b of the first triple valve 6 are connected to third connector 6c, the first connector 6a closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion in the shell of compressor 1, it is meant that the second cylinder 3 Slide plate chamber 3c is connected to high pressure.The slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder at this time, First cylinder 3 can work normally (V1 whole volumes participate in gas compression).Refrigerant gas by the first cylinder 3 the first air-breathing Mouth 3s suckings, in the first cylinder 3 after compression, boosting (pressure Pd), by first row gas port 3d the first cylinders 3 of discharge, in turn Compressor 1 is discharged via total exhaust outlet 1d.

Subsequent refrigerant gas enters outdoor heat exchange by the first communication port 8d, the second communication port 8c of the second four-way valve 8 Device 9.In outdoor heat exchanger 9, refrigerant gas to environmental air heat release, heat by 10 forced convection of outdoor fan air It takes away, exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through first throttle member Part 11, pressure reduction, partially liq shwoot come out, and become gas-liquid mixture, flow into flash vessel 12.In flash vessel 12, shwoot The gas-liquid mixture gone out forms gas-liquid two-phase layering.Wherein liquid phase (pressure after the decompression of 13 second throttle of the second restricting element It is reduced to Ps), get in heat exchanger 14.Indoors in heat exchanger 14, refrigerant evaporation endothermic, absorption is forced by indoor fan 15 Heat in the room air of convection current generates refrigeration effect.

Refrigerant after heat absorption is then evaporated to gas, by the 4th communication port 8e of the second four-way valve 8, third communication port 8s, into gas-liquid separator 7, the drop that may be carried secretly in wherein filtering out gas, then flow back to the first cylinder 3 first inhales Gas port 3s.Since the plunger cavity 4c of the second cylinder 4 and the second connection mouth 16b of the second triple valve 16 are connection, plunger cavity 4c The low pressure exported with gas-liquid separator 7 is connected to, the by-pass prot of the second cylinder 4 will be in the open state, and the second cylinder 4 only has portion Partial volume (V2 ') can participate in gas compression.Gas phase (pressure Pm) in flash vessel 12 then connects via the second of flash vessel 12 Port 12a, the second connector 6b of the first triple valve 6, third connector 6c flow to the second air entry 4s of the second cylinder 4, The V2 ' of second cylinder is partially compressed, after boosting, and the enclosure interior of compressor 1 is discharged into via second exhaust port 4d, last and first The exhaust of cylinder 3 together, is discharged to via total exhaust outlet 1d outside compressor 1.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.And what it is due to the compression of the first cylinder 3 is to be in low pressure Ps states Under gas, the compression of the second cylinder 4 is the gas under the intermediate pressure Pm states, and two cylinders discharges are that pressure is The high pressure gas of Pd, and the first cylinder 3 exhaust and the air-breathing of the second cylinder 4 do not mix, therefore this operating mode is the The independent compression refrigeration mode that one cylinder all works with the second cylinder portion.

The independent compression heating mode that (2) first cylinders 3 are all compressed with 4 subparticipation of the second cylinder

When the second four-way valve 8 is in the second connected state, the first four-way valve 5, the first triple valve 6, at the second triple valve 16 When the first connected state, the air-conditioning system 100 of first embodiment as shown in Figure 1 works in the first cylinder 3 all with second The independent compression heating mode of 4 subparticipation of cylinder compression.

As shown in figure 3, the first communication port 8d of the second four-way valve 8 and the 4th communication port 8e connections at this time, third communication port 8s and the second communication port 8c connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the second connector 6b of the first triple valve 6 are connected to third connector 6c, the first connector 6a closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, the first four-way valve 5, the first triple valve 6, the second triple valve 16, the first cylinder 3, second The state of cylinder 4 is identical with independent compression refrigeration mode, i.e., third cylinder 3 all participates in gas compression, the second cylinder 4 only part Volume (V2 ') participates in gas compression.Refrigerant, which is differed only in, with independent compression refrigeration mode flows through outdoor heat exchanger 9 and interior The sequencing of heat exchanger 14 is different.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of rotary compressor 1.Since pressure is pressure at expulsion in the shell of compressor 1, it is meant that second The slide plate chamber 3c of cylinder 3 is connected to high pressure.The slide plate of the first cylinder 3 is pressed on the rotor in cylinder (in figure at this time It is not shown), the first cylinder 3 can work normally (V1 all participates in gas compression).Refrigerant gas is by the first of the first cylinder 3 In the first cylinder 3 after compression, boosting (pressure Pd), the first cylinder 3 is discharged by first row gas port 3d in air entry 3s suckings, And then compressor 1 is discharged via total exhaust outlet 1d.

The refrigerant gas that compressor 1 is discharged passes through the first communication port 8d, the 4th communication port 8e of the second four-way valve 8, first Get in heat exchanger 14.In outdoor heat exchanger 14, refrigerant gas is to room air heat release, and heat is by indoor fan the last 15 The air for compeling convection current is taken away, and indoor heating is given.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This Refrigerant liquid flows through the second restricting element 13, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into and dodges Steaming device 12.In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein liquid phase is by first throttle member After the decompression of 11 second throttle of part (pressure is reduced to Ps), into outdoor heat exchanger 9.

In outdoor heat exchanger 9, refrigerant evaporation endothermic absorbs in the outdoor air by 10 forced convection of outdoor fan Heat.Refrigerant after heat absorption is then evaporated to gas, by the second communication port 8c of the second four-way valve 8, third communication port 8s, into Enter gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas flows back to the first air entry of the first cylinder 3 3s.Since the plunger cavity 4c of the second cylinder 4 and the second connection mouth 16b of the second triple valve 16 are connections, plunger cavity 4c will be with The low pressure connection that gas-liquid separator 7 exports, the by-pass prot of the second cylinder 4 will be in the open state, and the second cylinder 4 only has part to hold Product (V2 ') can participate in gas compression.Gas phase (pressure Pm) in flash vessel 12 is then via the second communication port of flash vessel 12a, the second connector 6b of the first triple valve 6, third connector 6c flow to the second air entry 4s of the second cylinder 4, second The V2 ' of cylinder is partially compressed, after boosting, and the enclosure interior of compressor 1 is discharged into via second exhaust port 4d, last and the first cylinder 3 exhaust together, is discharged to via total exhaust outlet 1d outside compressor 1.So move in circles.

Under such operating mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic State, air-conditioning system 100 are in the state heated to interior.And what it is due to the compression of the first cylinder 3 is to be in low pressure Ps shapes Gas under state, the compression of the second cylinder 4 is the gas under intermediate pressure Pm states, and what two cylinders were discharged is pressure For the high pressure gas of Pd, and the exhaust of the first cylinder 3 and the air-breathing of the second cylinder 4 do not mix, therefore this operating mode is The independent compression heating mode that first cylinder all works with the second cylinder portion.

(3) first cylinders 3 and the second cylinder 4 all participate in the independent compression refrigeration mode of compression

When the first four-way valve 5, the second four-way valve 8, the first triple valve 6 are in the first connected state, the second triple valve 16 When in the second connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and the second cylinder 4 all participates in pressure The independent compression refrigeration mode of contracting.

As shown in figure 4, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the second connector 6b of the first triple valve 6 are connected to third connector 6c, the first connector 6a closings, and second First connection mouth 16a of triple valve 16 connects mouth 16c connections with third, and second connects mouth 16b closings.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion in the shell of compressor 1, it is meant that the second cylinder 3 Slide plate chamber 3c is connected to high pressure.The slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder at this time, First cylinder 3 can work normally (V1 whole volumes participate in gas compression).

Refrigerant gas is by the first air entry 3s suckings of the first cylinder 3, (the pressure after compression, boosting in the first cylinder 3 For Pd), the first cylinder 3 is discharged by first row gas port 3d, and then compressor 1 is discharged via total exhaust outlet 1d.Subsequent refrigerant gas Body enters outdoor heat exchanger 9 by the first communication port 8d, the second communication port 8c of the second four-way valve 8.In outdoor heat exchanger 9, Refrigerant gas is taken away to environmental air heat release, heat by the air of 10 forced convection of outdoor fan, exothermic refrigeration Agent gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through first throttle element 11, pressure reduction, part Liquid shwoot comes out, and becomes gas-liquid mixture, flows into flash vessel 12.

In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein liquid phase is by the second throttling After the decompression of 13 second throttle of element (pressure is reduced to Ps), heat exchanger 14 is got in.Indoors in heat exchanger 14, refrigerant evaporation Heat absorption absorbs by the heat in the room air of 15 forced convection of indoor fan, generates refrigeration effect.Refrigerant after heat absorption is then It is evaporated to gas, by the 4th communication port 8e of the second four-way valve 8, third communication port 8s, into gas-liquid separator 7, wherein Filter out in gas may entrainment drop, then pass through third interface 5s, the 4th interface 5e of the first four-way valve 5, flow back to the First air entry 3s of one cylinder 3.

Since the plunger cavity 4c of the second cylinder 4 and the first connection mouth 16a of the second triple valve 16 are connection, plunger cavity 4c It will be connected to the high pressure in the shell of compressor 1, the by-pass prot of the second cylinder 4 will be in blocked state, the compression of the second cylinder 4 Whole volumes (V2) of chamber can participate in gas compression.Gas phase (pressure Pm) in flash vessel 12 is then via the of flash vessel Two communication port 12a, the second connector 6b of the first triple valve 6, third connector 6c flow to the second air entry of the second cylinder 4 4s is discharged into the enclosure interior of compressor 1 via the second exhaust port 4d of the second cylinder 4 in the second cylinder 4 after compression, boosting, Last and the first cylinder 3 exhaust together, is discharged to via exhaust outlet 1d outside compressor 1.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.And what it is due to the compression of the first cylinder 3 is to be in low pressure Ps states Under gas, the compression of the second cylinder 4 is the gas under the intermediate pressure Pm states, and two cylinders discharges are that pressure is The high pressure gas of Pd, and the exhaust of the first cylinder 3 and the air-breathing of the second cylinder 4 do not mix, therefore this operating mode is two A cooperative independent compression refrigeration mode of cylinder.

(4) first cylinders 3 and the second cylinder 4 all participate in the independent compression heating mode of compression

When the second four-way valve 8, the second triple valve 16 are in the second connected state, at the first four-way valve 5, the first triple valve 6 When the first connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and the second cylinder 4 all participates in compression Independent compression heating mode.

As shown in figure 5, the first communication port 8d of the second four-way valve 8 and the 4th communication port 8e connections at this time, third communication port 8s and the second communication port 8c connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the second connector 6b of the first triple valve 6 are connected to third connector 6c, the first connector 6a closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, the first four-way valve 5, the first triple valve 6, the second triple valve 16, the first cylinder 3, second The state of cylinder 4 is identical with independent compression refrigeration mode, i.e., third cylinder 3 all participates in gas compression, 4 compression chamber of the second cylinder Whole volumes (V2) participate in gas compression.Refrigerant, which is differed only in, with independent compression refrigeration mode flows through outdoor heat exchanger 9 It is different with the sequencing of indoor heat exchanger 14.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion in the shell of compressor 1, it is meant that the second cylinder 3 Slide plate chamber 3c is connected to high pressure.The slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder at this time, First cylinder 3 can work normally (V1 all participates in gas compression).Refrigerant gas by the first cylinder 3 the first air entry 3s Sucking, in the first cylinder 3 after compression, boosting (pressure Pd), by first row gas port 3d the first cylinders 3 of discharge, and then via Compressor 1 is discharged in exhaust outlet 1d.The refrigerant gas of compressor 1 is discharged by the first communication port 8d of the second four-way valve 8, the 4th Communication port 8e is introduced into indoor heat exchanger 14.

In outdoor heat exchanger 14, refrigerant gas is to room air heat release, and heat is by 15 forced convection of indoor fan Air is taken away, and indoor heating is given.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid Body flows through the second restricting element 13, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into flash vessel 12. In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein liquid phase passes through first throttle element 11 2 times After reducing pressure by regulating flow (pressure is reduced to Ps), into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic, absorb by Heat in the outdoor air of 10 forced convection of outdoor fan.

Refrigerant after heat absorption is then evaporated to gas, by the second communication port 8c of the second four-way valve 8, third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas passes through the third of the first four-way valve 5 Interface 5s, the 4th interface 5e flow back to the first air entry 3s of the first cylinder 3.Due to the plunger cavity 4c and the two or three of the second cylinder 4 First connection mouth 16a of port valve 16 is connection, and plunger cavity 4c will be connected to the high pressure in the shell of compressor 1, the second cylinder 4 By-pass prot will be in blocked state, the compression chamber whole volume (V2) of the second cylinder 4 can participate in gas compression.Flash vessel Gas phase (pressure Pm) in 12 then via the second communication port 12a of flash vessel 12, the first triple valve 6 the second connector 6b, Third connector 6c flow to the second air entry 4s of the second cylinder 4, in the second cylinder 4 after compression, boosting, via the second cylinder 4 second exhaust port 4d is discharged into the enclosure interior of compressor 1, and last and the first cylinder 3 exhaust together, is arranged via exhaust outlet 1d Go out to outside compressor 1.So move in circles.

Under such operating mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic State, air-conditioning system 100 are in the state heated to interior.And what it is due to the compression of the first cylinder 3 is to be in low pressure Ps shapes Gas under state, the compression of the second cylinder 4 is the gas under intermediate pressure Pm states, and what two cylinders were discharged is pressure For the high pressure gas of Pd, and the exhaust of the first cylinder 3 and the air-breathing of the second cylinder 4 do not mix, therefore this operating mode is The cooperative independent compression heating mode of two cylinders.

(5) the transfiguration refrigeration mode of 4 subparticipation of only the second cylinder compression

When the first four-way valve 5, the first triple valve 6 are in the second connected state, at the second four-way valve 8, the second triple valve 16 When the first connected state, air-conditioning system 100 as shown in Figure 1 works in the transfiguration system of 4 subparticipation of only the second cylinder compression Chill formula.

As shown in fig. 6, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the first interface 5d of the first four-way valve 5 and the 4th interface 5e connections, third interface 5s and second Interface 5c connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, since second interface 5c and third interface 5s are communicated, the 4th interface 5e and first interface 5d is communicated so that the slide plate chamber 3c of the first cylinder 3 is connected to the low pressure line that pressure is Ps, the first air entry of the first cylinder 3 3s is connected to the high pressure in the shell of compressor 1.The slide plate of the first cylinder 3 is unable to the rotor in compression cylinder (in figure not at this time Show), simultaneously because the first air entry 3s pressure of the first cylinder 3 is equal to the pressure at expulsion in the shell of compressor 1, the first gas The rotor of cylinder 3 will dally, and the first cylinder 3 cannot participate in gas compression.

Since the plunger cavity 4c of the second cylinder 4 and the second connection mouth 16b of the second triple valve 16 are communicated, plunger cavity 4c It is connected to low pressure, the by-pass prot of the second cylinder 4 will be in the open state, and the second cylinder 4 can join only partial volume (V2 ') With gas compression.At this point, refrigerant gas is sucked by the second air entry 4s of the second cylinder 4, pressed in the parts V2 ' of the second cylinder After contracting, boosting (pressure Pd), the enclosure interior of compressor 1 is discharged into via second exhaust port 4d, and then arrange via exhaust outlet 1d Go out compressor 1.Subsequent refrigerant gas enters outdoor and changes by the first communication port 8d, the second communication port 8c of the second four-way valve 8 Hot device 9.

In outdoor heat exchanger 9, refrigerant gas is to environmental air heat release, and heat is by 10 forced convection of outdoor fan Air is taken away, and exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through first segment Fluid element 11, pressure reduction, partially liq shwoot come out, and become gas-liquid mixture, flow into flash vessel 12.In flash vessel 12, The gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein second connector 6b disconnection of the gas phase due to the first triple valve 6 And be arrested in flash vessel 12, liquid phase is then after the decompression of 13 second throttle of the second restricting element (pressure is reduced to Ps), into entering the room Interior heat exchanger 14.Indoors in heat exchanger 14, refrigerant evaporation endothermic absorbs the room air by 15 forced convection of indoor fan In heat, generate refrigeration effect.Refrigerant after heat absorption is then evaporated to gas, by the 4th communication port of the second four-way valve 8 8e, third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas passes through first The first connector 6a, the third connector 6c of triple valve 6 flow back to the second air entry 4s of the second cylinder 4.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.Again since the first cylinder 3 is in off position, only the second gas V2 ' the volume works of cylinder 4 belong to drop capacity operation for twin-tub full capacity, therefore this operating mode is only second The transfiguration refrigeration mode of 4 subparticipation of cylinder compression.

(6) the transfiguration heating mode of 4 subparticipation of only the second cylinder compression

When the first four-way valve 5, the second four-way valve 8, the first triple valve 6 are in the second connected state, at the second triple valve 16 When the first connected state, air-conditioning system 100 as shown in Figure 1 works in the transfiguration system of 4 subparticipation of only the second cylinder compression Heat pattern.

As shown in fig. 7, the first communication port 8d of the second four-way valve 8 and the 4th communication port 8e connections at this time, third communication port 8s and the second communication port 8c connections, the first interface 5d of the first four-way valve 5 and the 4th interface 5e connections, third interface 5s and second Interface 5c connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second Second connection mouth 16b of triple valve connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, since second interface 5c and third interface 5s are communicated, the 4th interface 5e and first interface 5d is communicated so that the slide plate chamber 3c of the first cylinder 3 is connected to the low pressure line that pressure is Ps, the first air entry of the first cylinder 3 3s is connected to the high pressure in the shell of compressor 1.The slide plate of the first cylinder 3 is unable to the rotor in compression cylinder (in figure not at this time Show), simultaneously because the first air entry 3s pressure of the first cylinder 3 is equal to the pressure at expulsion in the shell of compressor 1, the first gas The rotor of cylinder 3 will dally, and cannot participate in gas compression.

Since the plunger cavity 4c of the second cylinder 4 and the second connection mouth 16b of the second triple valve 16 are communicated, plunger cavity 4c It is connected to low pressure, the by-pass prot of the second cylinder 4 will be in the open state, and the second cylinder 4 can join only partial volume (V2 ') With gas compression.At this point, refrigerant gas is sucked by the second air entry 4s of the second cylinder 4, compression, liter in the second cylinder 4 After pressure (pressure Pd), the second cylinder 4 is discharged by second exhaust port 4d, and then compressor 1 is discharged via exhaust outlet 1d.Then system Refrigerant gas gets in heat exchanger 14 by the first communication port 8d, the 4th communication port 8e of the second four-way valve 8.

Indoors in heat exchanger 14, refrigerant gas is to room air heat release, and heat is by 15 forced convection of indoor fan Air is taken away, to give indoor heating.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant Liquid flows through the second restricting element 13, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into flash vessel 12. In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase due to the first triple valve 6 second Connector 6b is disconnected and is arrested in flash vessel 12, the liquid phase then (pressure drop after the decompression of 11 second throttle of first throttle element For Ps), into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic is absorbed by 10 forced convection of outdoor fan Outdoor air in heat.Refrigerant after heat absorption is then evaporated to gas, by the second communication port 8c of the second four-way valve 8, Third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas passes through the one or three The first connector 6a, the third connector 6c of port valve 6 flow back to the second air entry 4s of the second cylinder 4.So move in circles.

In this mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic shape State, air-conditioning system 100 are in the state heated to interior.Again since the first cylinder 3 is in off position, only the second gas V2 ' the volume works of cylinder 4 belong to drop capacity operation for twin-tub full capacity, therefore this operating mode is only second The transfiguration heating mode of 4 subparticipation of cylinder compression.

(7) second cylinder 4 all participates in the transfiguration refrigeration mode of compression

When the second four-way valve 8 is in the first connected state, the first four-way valve 5, the first triple valve 6, at the second triple valve 16 When the second connected state, air-conditioning system 100 as shown in Figure 1 works in the transfiguration refrigeration that the second cylinder 4 all participates in compression Pattern.

As shown in figure 8, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the third interface 5s of the first four-way valve 5 are connected to second interface 5c, first interface 5d and the 4th Interface 5e connections, the third connector 6c of the first triple valve 6 and the first connector 6a connections, the second connector 6b closings, second The third of triple valve 16 connects mouth 16c and first and connects mouth 16a connections, and second connects mouth 16b closings.

Under such operating mode, since second interface 5c and third interface 5s are communicated, the 4th interface 5e and first interface 5d is communicated so that the slide plate chamber 3c of the first cylinder 3 is connected to the low pressure line that pressure is Ps, the first air entry of the first cylinder 3 3s is connected to the high pressure in the shell of compressor 1.The slide plate of the first cylinder 3 is unable to the rotor in compression cylinder (in figure not at this time Show), simultaneously because the first air entry 3s pressure of the first cylinder 3 is equal to the pressure at expulsion in the shell of compressor 1, the first gas The rotor of cylinder 3 will dally, and cannot participate in gas compression.

Since the plunger cavity 4c of the second cylinder 4 and the first connection mouth 16a of the second triple valve 16 are connection, plunger cavity 4c It will be connected to the high pressure in the shell of compressor 1, the by-pass prot of the second cylinder 4 will be in blocked state, the compression of the second cylinder 4 Whole volumes (V2) of chamber can participate in gas compression.At this point, refrigerant gas is inhaled by the second air entry 4s of the second cylinder 4 Enter, in the second cylinder 4 after compression, boosting, the enclosure interior of compressor 1 be discharged into via the second exhaust port 4d of the second cylinder 4, Finally it is discharged to outside compressor 1 via exhaust outlet 1d.The refrigerant gas that compressor 1 is discharged passes through the first of the second four-way valve 8 Communication port 8d, the second communication port 8c enter outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant gas is put to environmental air Heat, heat are taken away by the air of 10 forced convection of outdoor fan, and exothermic refrigerant gas then condenses out, and become to freeze Agent liquid.

This refrigerant liquid flows through first throttle element 11, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixed Object flows into flash vessel 12.In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase due to Second connector 6b of the first triple valve 6 is disconnected and is arrested in flash vessel 12, and liquid phase then passes through the second restricting element 13 2 times After reducing pressure by regulating flow (pressure is reduced to Ps), heat exchanger 14 is got in.Indoors in heat exchanger 14, refrigerant evaporation endothermic absorbs By the heat in the room air of 15 forced convection of indoor fan, refrigeration effect is generated.Refrigerant after heat absorption is then evaporated to gas Body filters out gas wherein by the 4th communication port 8e of the second four-way valve 8, third communication port 8s into gas-liquid separator 7 The drop that may be carried secretly in body, the first connector 6a, the third connector 6c for then passing through the first triple valve 6 flow back to the second cylinder 4 the second air entry 4s.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.Again since the first cylinder 3 cannot participate in compressing, the second cylinder 4 Compression is all participated in, drop capacity operation is belonged to for twin-tub full capacity, therefore this operating mode is that the second cylinder 4 is complete Portion participates in the transfiguration refrigeration mode of compression.

(8) second cylinder 4 all participates in the transfiguration heating mode of compression

When the first four-way valve 5, the second four-way valve 8, the first triple valve 6, the second triple valve 16 are in the second connected state When, air-conditioning system 100 as shown in Figure 1 works in the transfiguration heating mode that the second cylinder 4 all participates in compression.

As shown in figure 9, the first communication port 8d of the second four-way valve 8 and the 4th communication port 8e connections at this time, third communication port 8s and the second communication port 8c connections, the first interface 5d of the first four-way valve 5 and the 4th interface 5e connections, third interface 5s and second Interface 5c connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second The third of triple valve 16 connects mouth 16c and first and connects mouth 16a connections, and second connects mouth 16b closings.

Under such operating mode, since second interface 5c and third interface 5s are communicated, the 4th interface 5e and first interface 5d is communicated so that the slide plate chamber 3c of the first cylinder 3 is connected to the low pressure line that pressure is Ps, the first air entry of the first cylinder 3 3s is connected to the high pressure in the shell of compressor 1.The slide plate of the first cylinder 3 is unable to the rotor in compression cylinder (in figure not at this time Show), simultaneously because the first air entry 3s pressure of the first cylinder 3 is equal to the pressure at expulsion in the shell of compressor 1, the first gas The rotor of cylinder 3 will dally, and cannot participate in gas compression.Due to the second cylinder 4 plunger cavity 4c and the second triple valve 16 first It is connection to connect mouth 16a, and plunger cavity 4c will be connected to the high pressure in the shell of compressor 1, and the by-pass prot of the second cylinder 4 will be located Gas compression can be participated in whole volumes (V2) of blocked state, the compression chamber of the second cylinder 4.

At this point, refrigerant gas is sucked by the second air entry 4s of the second cylinder 4, compression, boosting in the second cylinder 4 Afterwards, it is discharged into the enclosure interior of compressor 1 via the second exhaust port 4d of the second cylinder 4, is finally discharged to pressure via exhaust outlet 1d Outside the shell of contracting machine 1.The refrigerant gas of compressor 1 is discharged by the first communication port 8d of the second four-way valve 8, the 4th communication port 8e gets in heat exchanger 14.Indoors in heat exchanger 14, refrigerant gas is to room air heat release, and heat is by indoor fan 15 The air of forced convection is taken away, and indoor heating is given.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid. This refrigerant liquid flows through the second restricting element 13, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into Flash vessel 12.

In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase is due to the first threeway Second connector 6b of valve 6 is disconnected and is arrested in flash vessel 12, and liquid phase is then passed through 11 second throttle of first throttle element and is depressured (pressure is reduced to Ps) afterwards, into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic is absorbed by outdoor fan Heat in the outdoor air of 10 forced convections.Refrigerant after heat absorption is then evaporated to gas, by the second of the second four-way valve 8 Communication port 8c, third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas passes through Cross the first connector 6a of the first triple valve 6, third connector 6c flows back to the second air entry 4s of the second cylinder 4.So cycle Back and forth.

In this mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic shape State, air-conditioning system 100 are in the state heated to interior.Again since the first cylinder 3 cannot participate in compressing, the second cylinder 4 Compression is all participated in, drop capacity operation is belonged to for twin-tub full capacity, therefore this operating mode is that the second cylinder 4 is complete Portion participates in the transfiguration heating mode of compression.

The transfiguration refrigeration mode of (9) first cylinders 3 and 4 subparticipation of the second cylinder compression

When the first four-way valve 5, the second four-way valve 8, the second triple valve 16 are in the first connected state, at the first triple valve 6 When the second connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and 4 subparticipation of the second cylinder compression Transfiguration refrigeration mode.

As shown in Figure 10, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion, the slide plate chamber of the second cylinder 3 in the shell of compressor 1 3c is connected to high pressure, and the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder, and the first cylinder 3 can be with Normal work (whole volumes of compression chamber participate in gas compression).Due to the plunger cavity 4c and the second triple valve 16 of the second cylinder 4 The second connection mouth 16b be connection, plunger cavity 4c is connected to the low pressure that gas-liquid separator 7 exports, the by-pass prot of the second cylinder 4 In the open state, the second cylinder 4 only has partial volume (V2 ') that can participate in gas compression.

At this point, refrigerant gas is sucked by the first air entry 3s of the first cylinder 3, in the first cylinder 3 after compression, boosting (pressure Pd) is discharged the first cylinder 3 by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas By the second air entry 4s suckings of the second cylinder 4, it is partially compressed, after boosting in the V2 ' of the second cylinder, via second exhaust port 4d The exhaust of the enclosure interior and the first cylinder 3 that are discharged into compressor 1 together, is discharged to via exhaust outlet 1d outside compressor 1.Discharge The refrigerant gas of compressor 1 enters outdoor heat exchanger 9 by the first communication port 8d, the second communication port 8c of the second four-way valve 8.

In outdoor heat exchanger 9, refrigerant gas is to environmental air heat release, and heat is by 10 forced convection of outdoor fan Air is taken away, and exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through first segment Fluid element 11, pressure reduction, partially liq shwoot come out, and become gas-liquid mixture, flow into flash vessel 12.In flash vessel 12, The gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.

Wherein since the second connector 6b of the first triple valve 6 is disconnected and is arrested in flash vessel 12, liquid phase then passes through gas phase (pressure is reduced to Ps) after 13 second throttle of the second restricting element is depressured is crossed, heat exchanger 14 is got in.Indoors in heat exchanger 14, Refrigerant evaporation endothermic absorbs by the heat in the room air of 15 forced convection of indoor fan, generates refrigeration effect.After heat absorption Refrigerant be then evaporated to gas, by the 4th communication port 8e of the second four-way valve 8, third communication port 8s, into gas-liquid separation Then device 7, the drop that may be carried secretly in wherein filtering out gas are divided into two-way, the first via passes through the third of the first four-way valve 5 Interface 5s, the 4th interface 5e flow back to the first air entry 3s of the first cylinder 3, and the second tunnel is connected by the first of the first triple valve 6 Mouth 6a, third connector 6c flow back to the second air entry 4s of the second cylinder 4.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.Again since the partial volume of the first cylinder 3 and the second cylinder 4 is same When work, they all from pressure be Ps low pressure line air-breathing, while toward pressure be Pd pressure duct be vented, relative to twin-tub Belong to drop capacity operation for full capacity, therefore this operating mode is that the first cylinder 3 and 4 subparticipation of the second cylinder are compressed Transfiguration refrigeration mode.

The transfiguration heating mode of (10) first cylinders 3 and 4 subparticipation of the second cylinder compression

When the first four-way valve 5, the second triple valve 16 are in the first connected state, at the second four-way valve 8, the first triple valve 6 When the second connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and 4 subparticipation of the second cylinder compression Transfiguration heating mode.

As shown in figure 11, the first communication port 8d of the second four-way valve 8 and the 4th communication port 8e connections at this time, third communication port 8s and the second communication port 8c connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second Second connection mouth 16b of triple valve 16 connects mouth 16c connections with third, and first connects mouth 16a closings.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion, the slide plate chamber of the second cylinder 3 in the shell of compressor 1 3c is connected to high pressure, and the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder, and the first cylinder 3 can be with Normal work (participates in gas compression).Since the plunger cavity 4c of the second cylinder 4 and the second connection mouth 16b of the second triple valve 16 are Connection, plunger cavity 4c is connected to the low pressure that gas-liquid separator 7 exports, and the by-pass prot of the second cylinder 4 is in the open state, and second Cylinder 4 only has partial volume (V2 ') that can participate in gas compression.

At this point, refrigerant gas is sucked by the first air entry 3s of the first cylinder 3, in the first cylinder 3 after compression, boosting (pressure Pd) is discharged the first cylinder 3 by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas By the second air entry 4s suckings of the second cylinder 4, it is partially compressed, after boosting in the V2 ' of the second cylinder, via second exhaust port 4d The exhaust of the enclosure interior and the first cylinder 3 that are discharged into compressor 1 together, is discharged to via exhaust outlet 1d outside compressor 1.Discharge The refrigerant gas of compressor 1 gets in heat exchanger by the first communication port 8d, the 4th communication port 8e of the second four-way valve 8 14.Indoors in heat exchanger 14, refrigerant gas to room air heat release, heat by 15 forced convection of indoor fan air band It walks, gives indoor heating.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through Second restricting element 13, pressure reduction, partially liq shwoot come out, and become gas-liquid mixture, flow into flash vessel 12.

In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase is due to the first threeway Second connector 6b of valve 6 is disconnected and is arrested in flash vessel 12, and liquid phase is then passed through 11 second throttle of first throttle element and is depressured (pressure is reduced to Ps) afterwards, into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic is absorbed by outdoor fan Heat in the outdoor air of 10 forced convections.Refrigerant after heat absorption is then evaporated to gas, by the second of the second four-way valve 8 Communication port 8c, third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas divides For two-way, the first via flows back to the first air entry of the first cylinder 3 by third interface 5s, the 4th interface 5e of the first four-way valve 5 The second air entry of the second cylinder 4 is flowed back on 3s, the second tunnel by the first connector 6a, the third connector 6c of the first triple valve 6 4s.So move in circles.

In this mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic shape State, air-conditioning system 100 are in the state heated to interior.Again since the partial volume of the first cylinder 3 and the second cylinder 4 is same When work, they all from pressure be Ps low pressure line air-breathing, while toward pressure be Pd pressure duct be vented, relative to twin-tub Belong to drop capacity operation for full capacity, therefore this operating mode is that the first cylinder 3 and 4 subparticipation of the second cylinder are compressed Transfiguration heating mode.

3 cylinder of (11) first gas and the second cylinder 4 all participate in the transfiguration refrigeration mode of compression

When the first four-way valve 5, the second four-way valve 8 are in the first connected state, at the first triple valve 6, the second triple valve 16 When the second connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and the second cylinder 4 all participates in compression Transfiguration refrigeration mode.

As shown in figure 12, the first communication port 8d of the second four-way valve 8 and the second communication port 8c connections at this time, third communication port 8s and the 4th communication port 8e connections, the first interface 5d of the first four-way valve 5 are connected to second interface 5c, third interface 5s and the 4th Interface 5e connections, the first connector 6a of the first triple valve 6 are connected to third connector 6c, the second connector 6b closings, and second First connection mouth 16a of triple valve 16 connects mouth 16c connections with third, and second connects mouth 16b closings.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion, the slide plate chamber of the second cylinder 3 in the shell of compressor 1 3c is connected to high pressure, and the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder, and the first cylinder 3 can be with Normal work (whole volumes of compression chamber participate in gas compression).Due to the plunger cavity 4c and the second triple valve 16 of the second cylinder 4 The first connection mouth 16a be connection, plunger cavity 4c will be connected to the high pressure in the shell of compressor 1, the bypass of the second cylinder 4 Hole will be in blocked state, and whole volumes (V2) of the compression chamber of the second cylinder 4 can participate in gas compression.

At this point, refrigerant gas is sucked by the first air entry 3s of the first cylinder 3, in the first cylinder 3 after compression, boosting (pressure Pd) is discharged the first cylinder 3 by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas By the second air entry 4s suckings of the second cylinder 4, it is partially compressed, after boosting in the V2 ' of the second cylinder, via the second cylinder 4 Second exhaust port 4d be discharged into compressor 1 enclosure interior and the first cylinder 3 exhaust together, be discharged to pressure via exhaust outlet 1d Outside contracting machine 1.The refrigerant gas that compressor 1 is discharged enters by the first communication port 8d of the second four-way valve 8, the second communication port 8c Outdoor heat exchanger 9.In outdoor heat exchanger 9, to environmental air heat release, heat is forced pair refrigerant gas by outdoor fan 10 The air of stream is taken away, and exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through One restricting element 11, pressure reduction, partially liq shwoot come out, and become gas-liquid mixture, flow into flash vessel 12.

In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase is due to the first threeway Second connector 6b of valve 6 is disconnected and is arrested in flash vessel 12, and liquid phase is then passed through 13 second throttle of the second restricting element and is depressured (pressure is reduced to Ps) afterwards gets in heat exchanger 14.Indoors in heat exchanger 14, refrigerant evaporation endothermic is absorbed by indoor wind The heat in the room air of 15 forced convections is fanned, refrigeration effect is generated.Refrigerant after heat absorption is then evaporated to gas, by The 4th communication port 8e, the third communication port 8s of two four-way valves 8 may folders in wherein filtering out gas into gas-liquid separator 7 The drop of band, is then divided into two-way, and the first via flows back to the first gas by third interface 5s, the 4th interface 5e of the first four-way valve 5 The second gas is flowed back in first air entry 3s of cylinder 3, the second tunnel by the first connector 6a, the third connector 6c of the first triple valve 6 Second air entry 4s of cylinder 4.So move in circles.

In this mode, outdoor heat exchanger 9 is in condensation heat release state, and indoor heat exchanger 14 is in evaporation endothermic shape State, air-conditioning system 100 are in the state freezed to interior.Again since the first cylinder 3 and the second cylinder 4 work at the same time, it All from the low pressure line air-breathing that pressure is Ps, while being vented toward the pressure duct that pressure is Pd, two cylinders are equivalent to parallel connection Working condition, and be maximum relative to the capacity of previous mode 5-- patterns 10, therefore this operating mode is 3 He of the first cylinder Second cylinder 4 all participates in the transfiguration refrigeration mode of compression.

(12) first cylinders 3 and the second cylinder 4 all participate in the transfiguration heating mode of compression

When the first four-way valve 5 is in the first connected state, the second four-way valve 8, the first triple valve 6, at the second triple valve 16 When the second connected state, air-conditioning system 100 as shown in Figure 1 works in the first cylinder 3 and the second cylinder 4 all participates in compression Transfiguration heating mode, system flow at this time is as shown in figure 13.At this point, the first communication port 8d of the second four-way valve 8 and the 4th Communication port 8e connections, third communication port 8s and the second communication port 8c connections, the first interface 5d and second interface of the first four-way valve 5 5c is connected to, and third interface 5s and the 4th interface 5e connections, the first connector 6a and third connector 6c of the first triple valve 6 connect Logical, the first connection mouth 16a of the second connector 6b closings, the second triple valve 16 connects mouth 16c connections with third, and second connects mouth 16b is closed.

Under such operating mode, since second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3 3c is connected to the enclosure interior of compressor 1.Since pressure is pressure at expulsion, the slide plate chamber of the second cylinder 3 in the shell of compressor 1 3c is connected to high pressure, and the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder, and the first cylinder 3 can be with Normal work (participates in gas compression).Since the plunger cavity 4c of the second cylinder 4 and the first connection mouth 16a of the second triple valve 16 are Connection, plunger cavity 4c will be connected to the high pressure in the shell of compressor 1, and the by-pass prot of the second cylinder 4 will be in blocked state, Whole volumes (V2) of the compression chamber of second cylinder 4 can participate in gas compression.

At this point, refrigerant gas is sucked by the first air entry 3s of the first cylinder 3, in the first cylinder 3 after compression, boosting (pressure Pd) is discharged the first cylinder 3 by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas By the second air entry 4s suckings of the second cylinder 4, it is partially compressed, after boosting in the V2 ' of the second cylinder, via the second cylinder 4 Second exhaust port 4d be discharged into compressor 1 enclosure interior and the first cylinder 3 exhaust together, be discharged to pressure via exhaust outlet 1d Outside contracting machine 1.The refrigerant gas that compressor 1 is discharged enters by the first communication port 8d of the second four-way valve 8, the 4th communication port 8e Indoor heat exchanger 14.Indoors in heat exchanger 14, to room air heat release, heat is forced pair refrigerant gas by indoor fan 15 The air of stream is taken away, and indoor heating is given.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigeration Agent liquid flows through the second restricting element 13, pressure reduction, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into flash vessel 12。

In flash vessel 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase is due to the first threeway Second connector 6b of valve 6 is disconnected and is arrested in flash vessel 12, and liquid phase is then passed through 11 second throttle of first throttle element and is depressured (pressure is reduced to Ps) afterwards, into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic is absorbed by outdoor fan Heat in the outdoor air of 10 forced convections.Refrigerant after heat absorption is then evaporated to gas, by the second of the second four-way valve 8 Communication port 8c, third communication port 8s, into gas-liquid separator 7, then the drop that may be carried secretly in wherein filtering out gas divides For two-way, the first via flows back to the first air entry of the first cylinder 3 by third interface 5s, the 4th interface 5e of the first four-way valve 5 The second air entry of the second cylinder 4 is flowed back on 3s, the second tunnel by the first connector 6a, the third connector 6c of the first triple valve 6 4s.So move in circles.

In this mode, indoor heat exchanger 14 is in condensation heat release state, and outdoor heat exchanger 9 is in evaporation endothermic shape State, air-conditioning system 100 are in the state heated to interior.Again since the first cylinder 3 and the second cylinder 4 work at the same time, it All from the low pressure line air-breathing that pressure is Ps, while being vented toward the pressure duct that pressure is Pd, two cylinders are equivalent to parallel connection Working condition, and be maximum relative to the capacity of previous mode 5- patterns 10, therefore this operating mode is the first cylinder 3 and the Two cylinder 4 all participates in the transfiguration heating mode of compression.

In conclusion two grades of independent compressions and fourth gear transfiguration operation side may be implemented in technical solution described in the utility model The switching of formula.When the operation of two grades of independent compressions, the volume that participates in the compression chamber of the cylinder of compression is respectively V1+V2 ' and V1+V2, When fourth gear transfiguration is run, the volume for participating in the compression chamber of the cylinder of compression is followed successively by V2 ', V2, V1+V2 by arrangement from small to large ', V1+V2。

Based on air-conditioning system 100 shown in Fig. 1-Figure 13, the volume of cylinder for participating in compression is limited to：

The compression chamber volume V2 ' that second cylinder 4 participates in compression is the 5%-30% of the compression chamber volume V1 of the first cylinder 3, That is V2 '/V1=5%-30%, preferably V2 '/V1=10%；

Whole compression chamber volume V2 that second cylinder 4 participates in compression are the 30%- of the compression chamber volume V1 of the first cylinder 3 70%, i.e. V2/V1=30%-70%, preferably V2/V1=40%；

The sum of 4 volume of first cylinder, 3 volume and the second cylinder is 1.3-1.7 times of 3 volume of the first cylinder, i.e. V1+V2= (1.3-1.7) V1, preferably V1+V2=1.4V1.

Second embodiment

Second embodiment and first embodiment difference lies in：The other elements of the first triple valve 6 in first embodiment Instead of the function of integrally realizing of air-conditioning system 100 is constant.

As shown in figure 14, it is that with two shut-off valves, (the first shut-off valve 17 and second ends by the first triple valve 6 in Fig. 1 Valve 18) come the scheme that is substituted, the various functions of the system described in Fig. 1-Figure 13 equally may be implemented.

In such scheme：When the first shut-off valve 17 close, the second shut-off valve 18 conducting when, at this time the second connector 6b and Third connector 6c is communicated, and the first connector 6a is blocked, and is equivalent to the first triple valve 6 and is in the first connected state, when first section When only the conducting of valve 17, the second shut-off valve 18 are closed, the second connector 6b is blocked at this time, the first connector 6a and third connector 6c It communicates, is equivalent to the first triple valve 6 and is in the second connected state.

It is appreciated that the air-conditioning system 100 of the utility model second embodiment also has the air-conditioning system of first embodiment Above-mentioned function possessed by 100 can also be run under above-mentioned 12 kinds of operating modes, and this will not be repeated here.

3rd embodiment

3rd embodiment and first embodiment difference lies in：The other elements of the first triple valve 6 in first embodiment Instead of the function of integrally realizing of air-conditioning system 100 is constant.

As shown in figure 15, it is the side for further substituting the first shut-off valve 17 in Figure 14 with a check valve 19 The various functions of the system described in Fig. 2-Figure 13 equally may be implemented in case.

In such scheme：When the second shut-off valve 18 is connected, the second connector 6b and third connector 6c are communicated at this time, First connector 6a is blocked (because the pressure Pm of flash vessel 12 is more than the pressure Ps of gas-liquid separator 7), is equivalent to the first triple valve 6 In the first connected state, when shut-off valve 18 is closed, the second connector 6b, the first connector 6a and third connector 6c at this time It communicates, is equivalent to the first triple valve 6 and is in the second connected state.

It is appreciated that the air-conditioning system 100 of the utility model 3rd embodiment also has the air-conditioning system of first embodiment Above-mentioned function possessed by 100 can also be run under above-mentioned 12 kinds of operating modes, and this will not be repeated here.

Fourth embodiment

Fourth embodiment and first embodiment difference lies in：Flash vessel 12 can be replaced with economizer 20, equally may be used To realize various operational modes above-mentioned.In other words, flash vessel 12 can be substituted for economizer 20, and connecting line is accordingly finely tuned, The function of integrally realizing of air-conditioning system 100 is constant.

As shown in Figure 16 and Figure 17, economizer 20, which is one, has the first port 20a, the second port 20b, third connectivity mouth 20c is heat exchanger tube between the hollow container of the 4th port 20d, wherein third connectivity mouth 20c and the 4th port 20d, in heat exchanger tube Fluid can carry out septate heat transfer with the fluid of hollow space.

As shown in figure 16, it is to change the flash vessel 12 in Fig. 1 into economizer 20, and flow signal in cooling mode Figure.In cooling mode, the import of first throttle element 11 is connected with outdoor heat exchanger 9, the outlet of first throttle element 11 and First port 20a of economizer 20 is connected, and the second port 20b and the second connector 6b are connected, third connectivity mouth 20c and outdoor heat exchange Device 9 is connected, and the import of the 4th port 20d and the second restricting element 13 is connected, the outlet of the second restricting element 13 and indoor heat exchange Device 14 is connected.At this point, the high temperature and pressure liquid refrigerant flowed out from outdoor heat exchanger 9 is divided into two-way, the first via is through first-class Enter economizer 20 from the first port 20a after the throttling of element 11, the second road is directly entered from third connectivity mouth 20c in economizer 20 Heat exchanger tube.First via refrigerant shwoot due to pressure reduction after throttling, becomes the gas-liquid mixture of low-temp low-pressure, this low temperature is low Liquid refrigerant in the gas-liquid mixture cooling economizer heat exchanger tube of pressure, makes liquid refrigerant have higher degree of supercooling, can be with Improve refrigerating capacity.The gas-liquid mixture of the first via evaporates after absorbing the heat of the second road refrigerant liquid, in a gaseous form Enter the second air entry 4s of the second cylinder 4 by the second connector 6b of the first triple valve 6, third connector 6c, realizes only Vertical compression operation.There is the liquid refrigerant compared with high supercooling degree then to flow out economizer 20, warp by the 4th port 20d in economizer 20 Heat exchanger 14 is got in after crossing 13 second throttle of the second restricting element, completes evaporation in heat exchanger 14 indoors.

As shown in figure 17, it is to change the flash vessel 12 in Fig. 1 into economizer 20, and flow signal in a heating mode Figure.In a heating mode, the import of first throttle element 11 is connected with indoor heat exchanger 14, the outlet of first throttle element 11 and First port 20a of economizer 20 is connected, and the second connector 6b of the second port 20b and the first triple valve 6 is connected, third connectivity mouth 20c is connected with indoor heat exchanger 14, and the import of the 4th port 20d and the second restricting element 13 is connected, the second restricting element 13 Outlet is connected with outdoor heat exchanger 9.

At this point, the high temperature and pressure liquid refrigerant flowed out from indoor heat exchanger 14 is divided into two-way, the first via is through first segment Enter economizer 20 from the first port 20a after the throttling of fluid element 11, the second road is directly entered from third connectivity mouth 20c in economizer 20 Heat exchanger tube.First via refrigerant shwoot due to pressure reduction after throttling, becomes the gas-liquid mixture of low-temp low-pressure, this low temperature Liquid refrigerant in the gas-liquid mixture cooling economizer heat exchanger tube of low pressure, makes liquid refrigerant have higher degree of supercooling, can To improve the heat absorption capacity in outdoor heat exchanger 9.The gas-liquid mixture of the first via absorbs the heat of the second road refrigerant liquid It is evaporated after amount, the second cylinder 4 is entered by the second connector 6b of the first triple valve 6, third connector 6c in a gaseous form Second air entry 4s realizes independent compression operation.Have the liquid refrigerant compared with high supercooling degree then by the 4th port in economizer 20d flows out economizer, gets in heat exchanger 9 after 13 second throttle of the second restricting element, is completed in heat exchanger 9 indoors Evaporation.

It is appreciated that the air-conditioning system 100 of the utility model fourth embodiment also has the air-conditioning system of first embodiment Above-mentioned function possessed by 100 can also be run under above-mentioned 12 kinds of operating modes, and this will not be repeated here.

In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "top", "bottom" "inner", "outside", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of retouching State the utility model and simplify and describe, do not indicate or imply the indicated structure or element must have a particular orientation, with Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, defining " first ", " Two " feature can explicitly or implicitly include one or more this feature.In the description of the present invention, unless It is otherwise noted, the meaning of " plurality " is two or more.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that： Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (12)

1. a kind of air-conditioning system, which is characterized in that including：

Compressor, the compressor include the first cylinder and the second cylinder, and first cylinder has the first air inlet, first row Gas port and can release slide plate chamber, second cylinder have the second air inlet, second exhaust port and can release plunger cavity；

Commutate valve group, and the commutation valve group includes the first four-way valve, the second four-way valve, the first triple valve, the second triple valve, described First four-way valve is used to low pressure refrigerant and high-pressure refrigerant corresponding to slide plate chamber, first air entry of the supply to the first cylinder, With make the first cylinder compression chamber participate in compression and be not involved in compress the two patterns between switch, first triple valve is used Supplied to the second air entry in by middle compression refrigerant or low pressure refrigerant so that the compressor in independent compression operating mode and Switch between transfiguration compression work pattern, second four-way valve switches to refrigeration mode or heating mode for controlling, described Second triple valve is for supplying high-pressure refrigerant or low pressure refrigerant to the plunger cavity of the second cylinder, so that the second cylinder is being pressed Contracting chamber all switches between the two patterns are compressed in participation compression and subparticipation.

2. air-conditioning system according to claim 1, which is characterized in that further include：

One end of outdoor heat exchanger, the outdoor heat exchanger is connected by second four-way valve with the compressor；

One end of first throttle element, the first throttle element is connected with the other end of the outdoor heat exchanger；

Flash vessel, the flash vessel have the first communication port, the second communication port and third connecting mouth, and the first of the flash vessel connects Port is connected with the other end of the first throttle element, and second communication port is connected with first triple valve to be described Compression refrigerant in compressor supply；

Second restricting element, one end of second restricting element are connected with the third connecting mouth of the flash vessel；And

Indoor heat exchanger, one end of the indoor heat exchanger are connected with the other end of second restricting element, and the interior is changed The other end of hot device is connected with second four-way valve, first four-way valve, the second four-way valve, the first triple valve, the two or three The interface of the logical low pressure refrigerant of port valve connects together.

3. air-conditioning system according to claim 1, which is characterized in that further include：

One end of outdoor heat exchanger, the outdoor heat exchanger is connected by second four-way valve with the compressor；

One end of first throttle element, the first throttle element is connected with the other end of the outdoor heat exchanger；

Economizer, the economizer have the first port, the second port, third connectivity mouth and the 4th port, the third connectivity mouth and 4th port is connected with the heat exchanger tube of the economizer, and second port is used to press in compressor supply Refrigerant；

First port of indoor heat exchanger, the economizer is connect with one end of first throttle member, the first throttle member The other end of part is selectively connected with one in the indoor heat exchanger and the outdoor heat exchanger, and the third connectivity mouth can Switching ground is connected with one in the indoor heat exchanger and the outdoor heat exchanger, and the third connectivity mouth and the first segment The other end of fluid element connects, the 4th port by the second restricting element switchably with the indoor heat exchanger and described One in outdoor heat exchanger is connected；

Under refrigeration mode, the first port and third connectivity mouth is connected with the outdoor heat exchanger and the 4th port Be connected with the indoor heat exchanger, under heating mode, first port and the third connectivity mouth with the outdoor heat exchanger Be connected and the 4th port be connected with the indoor heat exchanger, first four-way valve, the second four-way valve, the first triple valve, The interface of the logical low pressure refrigerant of second triple valve connects together.

4. according to the air-conditioning system described in any one of claim 2-3, which is characterized in that first four-way valve has first To the 4th interface, it is connected in the first interface and the shell of the compressor, the second interface is connected with the slide plate chamber, The third interface is for leading to low pressure refrigerant, and the 4th interface is connected with first air entry, first four-way valve It is configured to can be switched between the first connected state and the second connected state；

Under the first connected state the first interface be connected with the second interface, the third interface and the 4th interface It is connected, the first interface is connected with the 4th interface under the second connected state, the second interface connects with the third Mouth is connected.

5. air-conditioning system according to claim 4, which is characterized in that first triple valve is connected with first to third Mouthful, first connector is connected with the third interface of first four-way valve, second connector for flash vessel or Economizer is connected, and the third connector is connected with second air entry, and first triple valve is configured to connect first It is logical to can be switched between state and the second connected state；

First connector is closed under the first connected state, and second connector is connected with the third connector, Second connector is closed under second connected state, and first connector is connected with the third connector.

6. air-conditioning system according to claim 5, which is characterized in that first triple valve includes two shut-off valves, In one end of a shut-off valve be formed as one end of the first connector and another shut-off valve and be formed as the second connector, two are cut Only the other end of valve is connected and is collectively formed as third connector；Or optionally,

First triple valve includes shut-off valve and check valve, and one end of wherein check valve is formed as the first connector and check valve One end be formed as the second connector, the other end connection of the other end and check valve of the shut-off valve and be collectively formed as third Connector, the check valve are connected from described one end to the other end.

7. air-conditioning system according to claim 5, which is characterized in that second four-way valve has first to fourth circulation Mouthful, first communication port is connected with total exhaust outlet of the compressor, and second communication port is used to connect with outdoor heat exchanger Connect, the third communication port, first connector, the third interface be connected with each other it is logical, the 4th communication port be used for Indoor heat exchanger connects, and second four-way valve is configured to can be switched between the first connected state and the second connected state；

Under the first connected state first communication port be connected with second communication port, the third communication port and described the Four communication ports are connected, and first communication port is connected with the 4th communication port under the second connected state, described second circulates Mouth is connected with the third communication port.

8. air-conditioning system according to claim 7, which is characterized in that second triple valve is connected with first to third Mouthful, the first connection mouth is connected with the first interface of first four-way valve, and described second connects mouth, third connection Mouth, first connector, the third communication port are connected, and the third connects mouth and is connected with the plunger cavity, and described second Triple valve is configured to can be switched between the first connected state and the second connected state；

Described first connects mouth closing under the first connected state, and the second connection mouth connects mouth with the third and is connected, Described second connects mouth closing under second connected state, and the first connection mouth connects mouth with the third and is connected.

9. air-conditioning system according to claim 8, which is characterized in that further include gas-liquid separator, the gas-liquid separator Import be connected with the third communication port of second four-way valve, the outlet of the gas-liquid separator respectively with first four-way The third interface of valve, the first connector of first triple valve, the second connection mouth of second triple valve are connected.

10. air-conditioning system according to any one of claim 1-3, which is characterized in that under independent compression operating mode, The volume that second cylinder participates in the compression chamber of compression is V2 ', and the volume of the compression chamber of first cylinder is V1, is expired Foot：V2 '/V1=5%-30%, preferably V2 '/V1=10%.

11. air-conditioning system according to any one of claim 1-3, which is characterized in that described under transfiguration operating mode Whole volumes that second cylinder participates in the compression chamber of compression are V2, and the volume of the compression chamber of first cylinder is V1, is met： V2/V1=30%-70%, preferably V2/V1=40%.

12. air-conditioning system according to any one of claim 1-3, which is characterized in that described under transfiguration operating mode Whole volumes that second cylinder participates in the compression chamber of compression are V2, and the volume of the compression chamber of first cylinder is V1, V1+V2= (1.3-1.7) V1, preferably V1+V2=1.4V1.