CN107842486A - Compressor and there is its air-conditioning system - Google Patents
Compressor and there is its air-conditioning system Download PDFInfo
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- CN107842486A CN107842486A CN201711195600.8A CN201711195600A CN107842486A CN 107842486 A CN107842486 A CN 107842486A CN 201711195600 A CN201711195600 A CN 201711195600A CN 107842486 A CN107842486 A CN 107842486A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 73
- 230000006835 compression Effects 0.000 claims abstract description 217
- 238000007906 compression Methods 0.000 claims abstract description 217
- 239000003507 refrigerant Substances 0.000 claims abstract description 143
- 238000005057 refrigeration Methods 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims description 111
- 239000007788 liquid Substances 0.000 claims description 72
- 230000008676 import Effects 0.000 claims description 14
- 239000007789 gas Substances 0.000 description 107
- 239000000203 mixture Substances 0.000 description 21
- 238000001704 evaporation Methods 0.000 description 16
- 230000008020 evaporation Effects 0.000 description 16
- 239000012071 phase Substances 0.000 description 15
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- 239000007791 liquid phase Substances 0.000 description 6
- 230000006837 decompression Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02743—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using three four-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
Abstract
The invention discloses a kind of compressor and there is its air-conditioning system.The compressor has the first cylinder and the second cylinder, first cylinder is configured to the cylinder whole volume participation compression in slide plate chamber logical high-pressure refrigerant and cylinder whole volume is not involved in compressing when slide plate chamber leads to low pressure refrigerant, and the second cylinder is configured to the whole volume when plunger cavity leads to high-pressure refrigerant and participates in compressing and the only partial volume participation compression when plunger cavity leads to low pressure refrigerant.The air-conditioning system includes the compressor, outdoor heat exchanger, indoor heat exchanger, flash vessel and the valve group etc. that commutates.Commutation valve group includes the first four-way valve, the second four-way valve and the 3rd four-way valve.By the different changes and combination of the connected state of three four-way valves, compressor and air-conditioning system can be made to switch between transfiguration mode of operation and independent compression mode of operation, and refrigeration and heating state.
Description
Technical field
The present invention relates to Compressor Technology field, in particular to a kind of compressor and has its air-conditioning system.
Background technology
In correlation technique, positive displacement compressor is a kind of compressor with two and two or more compression chamber, typically
Rotary compressor with two cylinders.When cooling load is larger, compressor operates (two cylinders while work with full capacity
Make)；When cooling load is smaller, compressor is operated (only one of which cylinder operation, another does not work) with portion capacity.
Using the air-conditioning system of positive displacement compressor, the existing high frequent start and stop in sub-load of constant speed air-conditioning system can be avoided
Problem is reduced with part-load efficiency, its SEER (refrigeration season EER) 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.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, it is the one of Compressor Technology development in recent years
Individual important directions.
Independent compression formula compressor is also a kind of compressor with two and two or more compression chamber, is typically had
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 one-level throttles.Independent compression circulation can reduce throttling damage
Lose, reduce the mass dryness fraction into the refrigerant of evaporator, evaporator heat transfer efficiency is improved, so as to improve air-conditioning system in specific work
Ability and efficiency under condition.
Existing compressor is generally merely one kind in independent compression formula compressor and positive displacement compressor, it is impossible to is taken into account
The advantages of two kinds of compress techniques, therefore can be further perfect.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention had proposed one kind both
Refrigeration can be improved under specific operation or heating efficiency, and can take into account the sub-load of transition season, so as to improve the season energy
The compressor of efficiency.
The present invention is that the applicant is made based on following cognition：
Double-cylinder variable-capacity compressor and twin-tub independent compression formula compressor were both had any different, and were related again.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, Ran Houyi
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 different from some intermediate pressure air-breathing, the step-up ratio of two cylinders from low pressure air suction, the second cylinder.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, and and can improve refrigeration (heating) ability or efficiency, again to become capacitance type operating when determining operating mode
Season energy efficiency can be taken into account, the advantages of so as to give full play to two kinds of Compressor Technologies.
The compressor of embodiment includes according to a first aspect of the present invention：Housing, the housing have exhaust outlet；Compression unit
Part, the compression member includes the first cylinder, the second cylinder, the first slide plate, the second slide plate, first piston, second piston, described
First cylinder has the first air entry, first row gas port and vane slot, and first slide plate is located in the vane slot and described
Vane slot is formed as slide plate chamber positioned at the part at the back of first slide plate, and first slide plate is configured in the cunning
Piece chamber is pressed on the first piston when leading to high-pressure refrigerant, and when the slide plate chamber leads to low pressure refrigerant with described first
Piston departs from, and second cylinder has the second air entry, second exhaust port, plunger cavity and by-pass prot, and the plunger cavity is set
On the median septum or supplementary bearing of second cylinder, plunger is provided with the plunger cavity, the plunger is configured to described
Plunger cavity blocks the by-pass prot and opens wide the by-pass prot when the plunger cavity leads to low pressure refrigerant when leading to high-pressure refrigerant,
So that the portion gas of the second cylinder of suction bypasses back the second air entry by by-pass prot.
Compressor according to embodiments of the present invention, the first cylinder use vane slot discharge degree mode, and the second cylinder uses
Plunger bypass-unloading mode.Thus compressor is operable with transfiguration and independent compression two ways, can specifically be subdivided into 6 kinds not
Same mode of operation.So, independent compression can be lifted into specific operation refrigerating/heating efficiency and transfiguration can be substantially improved season energy
The advantages of effect, is integrated, and flexible working mode is changeable, good energy-conserving effect, and environmental suitability is strong.
The air-conditioning system of embodiment includes according to a second aspect of the present invention：The compressor；Commutate valve group, the reversal valve
Group is connected with the exhaust outlet, first air entry, second air entry, the plunger cavity, the slide plate chamber and thinks it
Any of low pressure refrigerant, middle compression refrigerant or high-pressure refrigerant are supplied, so that the compression member can work in transfiguration
Switch between pattern and independent compression mode of operation；Outdoor heat exchanger, one end of the outdoor heat exchanger and the commutation valve group
It is connected；First throttle element, one end of the first throttle element are connected with the other end of the outdoor heat exchanger；Flash vessel,
The flash vessel has import, exhaust outlet and leakage fluid dram, the import of the flash vessel and the other end of the first throttle element
It is connected, it is compression refrigerant in compressor supply that the exhaust outlet, which is used for by the commutation valve group,；Second restricting element, institute
The one end for stating the second restricting element is connected with the leakage fluid dram of the flash vessel；Indoor heat exchanger, one end of the indoor heat exchanger
It is connected with the other end of second restricting element, the other end of the indoor heat exchanger passes through the commutation valve group and the pressure
Contracting machine is connected.
Air-conditioning system according to an embodiment of the invention, the commutation valve group include the first to the 3rd four-way valve, work as institute
The first four-way valve is stated to be used to high-pressure refrigerant being communicated to the slide plate chamber of the first cylinder and low pressure refrigerant is supplied into the first air-breathing
Mouthful and connect plunger cavity, and second four-way valve is for when middle compression refrigerant is supplied to the second air entry, the compression
Machine is in independent compression mode of operation；When slide plate chamber of first four-way valve for low pressure refrigerant to be communicated to the first cylinder
And high-pressure refrigerant is supplied into the first air entry and connects plunger cavity, and second four-way valve is used to supply low pressure refrigerant
During to the second air entry, the compressor is in the single cylinder that the first cylinder does not work, the whole participation of the second cylinder compression chamber is compressed
Transfiguration mode of operation；When first four-way valve is used to high-pressure refrigerant being communicated to the slide plate chamber of the first cylinder and by low pressure system
Cryogen supplies the first air entry and connects plunger cavity, and second four-way valve is used to supply low pressure refrigerant to the second suction
During gas port, the compressor is in twin-tub transfiguration mode of operation；3rd four-way valve for control switch to refrigeration mode or
Heating mode.
In certain embodiments, first four-way valve has first to fourth interface, the first interface and the shell
It is connected in vivo, the second interface is connected with the first slide plate chamber, and the 3rd interface is for leading to low pressure refrigerant, and described the
Four interfaces are connected with first air entry, the plunger cavity respectively, and first four-way valve is configured in the first connected state
It is changeable between state and the second connected state；Under the first connected state the first interface be connected with the second interface, institute
State the 3rd interface with the 4th interface to be connected, the compression chamber of the first cylinder all participates in the compression chamber portion of compression and the second cylinder
Point participate in compression, under the second connected state the first interface be connected with the 4th interface, the second interface with it is described
3rd interface is connected, and first cylinder is not involved in compression and the compression chamber of second cylinder all participates in compression.
In certain embodiments, second four-way valve has first to fourth connector, wherein the 4th connector
All the time close, first connector is connected with the 3rd interface of first four-way valve, second connector and described the
Two air entries are connected, and the 3rd connector is used to be connected with the flash vessel, and second four-way valve is configured to first
It is changeable between connected state and the second connected state；First connector and the 4th connector close under the first connected state
Closing, second connector is connected with the 3rd connector, and the compression member can switch to independent compression mode of operation,
The 3rd connector and the 4th connector are closed under second connected state, first connector and the second connector phase
Even, the compression member can switch to transfiguration mode of operation.
Alternatively, second four-way valve can be a triple valve, and three interfaces of the triple valve correspond to institute respectively
State the first connector to the 3rd connector of the second four-way valve.
Alternatively, second four-way valve includes two stop valves, and one end of one of stop valve is formed as the first company
One end of interface and another stop valve is formed as the 3rd connector, the other end connection of two stop valves and is collectively forming as the
Two connectors.
Alternatively, second four-way valve includes stop valve and check valve, and one end of wherein stop valve is formed as the first company
One end of interface and check valve is formed as the 3rd connector, and the other end of the stop valve and the other end of check valve are connected and be total to
With the second connector is formed as, the other end described in the check valve from one end phase turns on.
In certain embodiments, the 3rd four-way valve has first to fourth communication port, first communication port and institute
State exhaust outlet to be connected, second communication port is used to be connected with outdoor heat exchanger, the 3rd communication port, first connection
Mouthful, the 3rd interface be connected with each other it is logical, the 4th communication port be used for be connected with indoor heat exchanger, the 3rd four-way valve quilt
It is configured to changeable between the first connected state and the second connected state；Under the first connected state first communication port with
Second communication port is connected, the 3rd communication port is connected with the 4th communication port, and the compression chamber of the first cylinder is all joined
Compressed with compression and the compression chamber subparticipation of the second cylinder, first communication port and the described 4th under the second connected state
Communication port is connected, second communication port is connected with the 3rd communication port, and first cylinder is not involved in compressing and described the
The compression chamber of two cylinders all participates in compression.
In certain embodiments, in addition to gas-liquid separator, the import of the gas-liquid separator and the 3rd four-way valve
The 3rd communication port be connected, outlet the 3rd interface with first four-way valve, described second respectively of the gas-liquid separator
First connector of four-way valve is connected.
Air-conditioning system according to an embodiment of the invention, under independent compression mode of operation, second cylinder portion
The volume for participating in compression chamber during compression be V2 ', and the volume of the compression chamber in first cylinder is V1, its satisfaction：V2 '/V1=
5%-30%.
Air-conditioning system according to an embodiment of the invention, under transfiguration mode of operation, second cylinder all participates in
The volume of compression chamber is V2 during compression, and the volume of the compression chamber in first cylinder is V1, and it meets：V2/V1=30%-
70%.
The air-conditioning system of embodiment includes according to a third aspect of the present invention：Described compressor；Commutate valve group, the commutation
Valve group is connected and thought with the exhaust outlet, first air entry, second air entry, the plunger cavity, the slide plate chamber
It supplies any of low pressure refrigerant, middle compression refrigerant or high-pressure refrigerant, so that the compression member can be in transfiguration work
Switch between operation mode and independent compression mode of operation；Outdoor heat exchanger, one end of the outdoor heat exchanger and the reversal valve
Group is connected；First throttle element, one end of the first throttle element are connected with the other end of the outdoor heat exchanger；It is economical
Device, the economizer have the first import, the second import, exhaust outlet and a leakage fluid dram, the first import of the economizer with it is described
The other end of first throttle element is connected, and the second import of the economizer is connected with the other end of the outdoor heat exchanger, institute
State exhaust outlet and be used to by the commutation valve group be compression refrigerant in compressor supply；Second restricting element, described second
One end of restricting element is connected with the leakage fluid dram of the economizer；And outdoor heat exchanger, one end of the outdoor heat exchanger with
The other end of second restricting element is connected, and the other end of the outdoor heat exchanger passes through the commutation valve group and the compression
Machine is connected.
Air-conditioning system according to an embodiment of the invention, the commutation valve group includes the first to the 3rd four-way valve, described
First four-way valve be used for by the corresponding supply of low pressure refrigerant and middle compression refrigerant to the slide plate chamber of the first cylinder, the first air entry and
Plunger cavity, with what is compressed in the compression chamber whole participation compression and the compression chamber subparticipation of second cylinder that make the first cylinder
The compression chamber of first gear and only the second cylinder all participates in switching between the second gear of compression, and second four-way valve is used for
Middle compression refrigerant or low pressure refrigerant are supplied to the second air entry, so that the compressor is in independent compression mode of operation and change
Switch between appearance compression work pattern, the 3rd four-way valve switches to refrigeration mode or heating mode for control.
In certain embodiments, first four-way valve has first to fourth interface, the first interface and the shell
It is connected in vivo, the second interface is connected with the first slide plate chamber, and the 3rd interface is for leading to low pressure refrigerant, and described the
Four interfaces are connected with first air entry, the plunger cavity respectively, and first four-way valve is configured in the first connected state
It is changeable between state and the second connected state；Under the first connected state the first interface be connected with the second interface, institute
State the 3rd interface with the 4th interface to be connected, the compression chamber of the first cylinder all participates in the compression chamber portion of compression and the second cylinder
Point participate in compression, under the second connected state the first interface be connected with the 4th interface, the second interface with it is described
3rd interface is connected, and first cylinder is not involved in compression and the compression chamber of second cylinder all participates in compression.
In certain embodiments, second four-way valve has first to fourth connector, first connector and institute
The 3rd interface for stating the first four-way valve is connected, and second connector is connected with second air entry, the 3rd connector
For being connected with the economizer, second four-way valve is configured to can between the first connected state and the second connected state
Switching；First connector and the 4th connector are closed under the first connected state, second connector and the described 3rd
Connector is connected, and the compression member can switch to independent compression mode of operation, the 3rd connection under the second connected state
Mouth and the 4th connector are closed, and first connector is connected with second connector, and the compression member can switch to change
Hold mode of operation.
Alternatively, second four-way valve is triple valve, and three interfaces of the triple valve are respectively formed as described first
Connector is to the 3rd connector.
Alternatively, second four-way valve includes two stop valves, and one end of one of stop valve is formed as the first company
One end of interface and another stop valve is formed as the 3rd connector, the other end connection of two stop valves and is collectively forming as the
Two connectors.
Alternatively, second four-way valve includes stop valve and check valve, and one end of wherein stop valve is formed as the first company
One end of interface and check valve is formed as the 3rd connector, and the other end of the stop valve and the other end of check valve are connected and be total to
With the second connector is formed as, the other end described in the check valve from one end phase turns on.
In certain embodiments, the 3rd four-way valve has first to fourth communication port, first communication port and institute
State exhaust outlet to be connected, second communication port is used to be connected with outdoor heat exchanger, the 3rd communication port, first connection
Mouthful, the 3rd interface be connected with each other it is logical, the 4th communication port be used for be connected with indoor heat exchanger, the 3rd four-way valve quilt
It is configured to changeable between the first connected state and the second connected state；Under the first connected state first communication port with
Second communication port is connected, the 3rd communication port is connected with the 4th communication port, and the compression chamber of the first cylinder is all joined
Compressed with compression and the compression chamber subparticipation of the second cylinder, first communication port and the described 4th under the second connected state
Communication port is connected, second communication port is connected with the 3rd communication port, and first cylinder is not involved in compressing and described the
The compression chamber of two cylinders all participates in compression.
In certain embodiments, in addition to gas-liquid separator, the import of the gas-liquid separator and the 3rd four-way valve
The 3rd communication port be connected, outlet the 3rd interface with first four-way valve, described second respectively of the gas-liquid separator
First connector of four-way valve is connected.
Air-conditioning system according to an embodiment of the invention, under independent compression mode of operation, second cylinder portion
The volume for participating in the compression chamber of compression be V2 ', and the volume of the compression chamber in first cylinder is V1, its satisfaction：V2 '/V1=
5%-30%.
Air-conditioning system according to an embodiment of the invention, under transfiguration mode of operation, second cylinder all participates in
The volume of the compression chamber of compression is V2, and the volume of the compression chamber in first cylinder is V1, and it meets：V2/V1=30%-
70%.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the schematic diagram of air-conditioning system according to a first embodiment of the present invention.
Fig. 2 is the schematic diagram that air-conditioning system according to a first embodiment of the present invention is worked under independent compression refrigeration mode.
The schematic diagram that the air-conditioning systems of Fig. 3 according to a first embodiment of the present invention are worked under independent compression heating mode.
Fig. 4 is the signal that air-conditioning system according to a first embodiment of the present invention is worked under transfiguration (single cylinder) refrigeration mode
Figure.
Fig. 5 is the signal that air-conditioning system according to a first embodiment of the present invention is worked under transfiguration (single cylinder) heating mode
Figure.
Fig. 6 is the signal that air-conditioning system according to a first embodiment of the present invention is worked under transfiguration (twin-tub) refrigeration mode
Figure.
Fig. 7 is the system stream that air-conditioning system according to a first embodiment of the present invention is worked under transfiguration (twin-tub) heating mode
Cheng Tu.
Fig. 8 is the schematic diagram of air-conditioning system according to a second embodiment of the present invention (by the second four-way valve of first embodiment
It is substituted for two stop valves).
Fig. 9 is the schematic diagram of air-conditioning system according to a third embodiment of the present invention (by the second four-way valve of first embodiment
It is substituted for stop valve and check valve).
Figure 10 is that the schematic diagram that air-conditioning system according to a fourth embodiment of the present invention is worked under refrigeration mode is (real by first
The flash vessel for applying example is substituted for economizer).
Figure 11 is that the schematic diagram that air-conditioning system according to a fourth embodiment of the present invention is worked under heating mode is (real by first
The flash vessel for applying example is substituted for economizer).
Reference：
Air-conditioning system 100,
Compressor 1, exhaust outlet 1d, motor 2, the first cylinder 3, the first air entry 3s, first row gas port 3d, slide plate chamber 3c,
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 interface
5c, the 3rd interface 5s, the 4th interface 5e, the second four-way valve 6, the first connector 6c, the second connector 6s, the 3rd connector 6e,
4th connector 6d, gas-liquid separator 7, the 3rd four-way valve 8, the first communication port 8d, the second communication port 8c, the 3rd communication port 8s,
4th communication port 8e, outdoor heat exchanger 9, outdoor fan 10, first throttle element 11, flash vessel 12, the first connected entrance 12c, the
Two connected entrance 12a, third connecting mouth 12b, the second restricting element 13, indoor heat exchanger 14, indoor fan 15, the first stop valve
16, the second stop valve 17, check valve 18, economizer 20, the first port 20a, third connectivity mouth 20c, the second port 20b, four-way
Mouth 20d.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
As shown in figure 1, the compressor 1 of embodiment includes according to a first aspect of the present invention：Housing, compression member and commutation
Valve group, housing have exhaust outlet 1d, and compression member includes the first cylinder 3, the second cylinder 4, the first slide plate, the second slide plate, first
Piston, second piston, the first cylinder 3 have the first air entry 3s, first row gas port 3d and vane slot, and the first slide plate is located at slide plate
In groove and vane slot is formed as slide plate chamber 3c positioned at the part at the first slide plate back, and the first slide plate is configured in slide plate chamber 3c
It is pressed on first piston during logical high-pressure refrigerant and departs from when slide plate chamber 3c leads to low pressure refrigerant with first piston.
Second cylinder 4 has the second air entry 4s, second exhaust port 4d, plunger cavity 4c and by-pass prot, and plunger cavity 4c is set
On the median septum or supplementary bearing of the second cylinder 4, plunger is provided with plunger cavity 4c, plunger is configured to lead to high pressure in plunger cavity 4c
By-pass prot is blocked during refrigerant and opens wide by-pass prot when plunger cavity 4c leads to low pressure refrigerant, so that the second cylinder 4 of suction
Portion gas bypasses back the second air entry 4s (not shown)s by by-pass prot.
Compressor 1 according to embodiments of the present invention, the first cylinder 3 use vane slot discharge degree mode, and the second cylinder is adopted
With plunger bypass-unloading mode.Thus compressor 1 is operable with transfiguration and independent compression two ways, can specifically be subdivided into 6
The different mode of operation of kind.So, independent compression can be lifted into specific operation refrigerating/heating efficiency and transfiguration can be substantially improved season
The advantages of energy-conservation effect, is integrated, and flexible working mode is changeable, good energy-conserving effect, and environmental suitability is strong.
As shown in figure 1, the air-conditioning system 100 of embodiment includes according to a first aspect of the present invention：The compression of above-described embodiment
Machine 1, commutation valve group, outdoor heat exchanger 9, first throttle element 11, flash vessel 12, the second restricting element 13 and indoor heat exchanger
14。
Commutation valve group be connected with exhaust outlet 1d, the first air entry 3s, the second air entry 4s, plunger cavity 4c, slide plate chamber 3c with
Any of low pressure refrigerant, middle compression refrigerant or high-pressure refrigerant are supplied for it, and then makes compression member can be in transfiguration work
Switch between operation mode and independent compression mode of operation.
One end of outdoor heat exchanger 9 is connected with commutation valve group, and one end of first throttle element 11 is another with outdoor heat exchanger 9
One end is connected, and flash vessel 12 has the first connected entrance 12c, the second connected entrance 12a and third connecting mouth 12b, flash vessel 12
First connected entrance 12c is connected with the other end of first throttle element 11, and the second connected entrance 12a is used for by the valve group that commutates for compression
Compression refrigerant during machine 1 supplies, one end of the second restricting element 13 are connected with the third connecting mouth 12b of flash vessel 12, indoor heat exchange
One end of device 14 is connected with the other end of the second restricting element 13, and the other end of indoor heat exchanger 14 passes through valve group and the compression of commutating
Machine 1 is connected.
It is understood that commutation valve group can be the valve group of multiple four-way valves composition, multiple four-way valves directly with one another or
It is indirectly connected and (includes but is not limited to exhaust outlet 1d, the first air entry 3s, the second suction corresponding to each interface on compressor 1
Gas port 4s, plunger cavity 4c, by-pass prot) it is connected, so that compressor 1 is selectively in transfiguration operating mode or independent compression operating mode.
For the first cylinder 3, when the valve group that commutates supplies high-pressure refrigerant to slide plate chamber 3c, the first slide plate compresses
On first piston, now the compression chamber of the first cylinder 3 participates in compression, and the volume of the compression chamber of the first cylinder 3 is V1.Conversely,
When the valve group that commutates supplies low pressure refrigerant to slide plate chamber 3c, the first slide plate and first piston depart from, now the first cylinder 3
Compression chamber is not involved in compressing.
For the second cylinder 4, when the valve group that commutates supplies high-pressure refrigerant to plunger cavity 4c, plunger blocks side
Through hole, now the compression chamber of the second cylinder 4 can all participate in compressing, the volume of the compression chamber of the second cylinder 4 is V2.Conversely,
When the valve group that commutates supplies low pressure refrigerant to plunger cavity 4c, plunger falls and by-pass prot is in opening-wide state, the second gas
Portion gas in cylinder 4 will return to the compression of the air entry (not shown), now the second cylinder 4 of compressor via by-pass prot
Chamber only partial volume V2 ' participates in compression.
Thus, when refrigeration or heating load are larger, compressor 1 is run in a manner of twin-tub full capacity, with meet it is indoor it is cold,
The requirement of thermic load；When refrigeration or heating load are smaller, compressor 1 is run in a manner of single cylinder varying capacity, to reduce compressor 1
Start-stop time, improve air-conditioning system 100 season energy efficiency；Under other circumstances, compressor 1 is transported in a manner of independent compression
OK, to improve the refrigeration or heating efficiency under specific operation.
Preferably, the valve group that commutates includes the first four-way valve 5, the second four-way valve 6, the 3rd four-way valve 8, when the
One four-way valve 5 is used to high-pressure refrigerant being communicated to the slide plate chamber 3c of the first cylinder 3 and low pressure refrigerant is supplied into the first air-breathing
Mouthful 3s and plunger cavity 4c is connected, and the second four-way valve 6 is for when middle compression refrigerant is supplied to the second air entry 4s, compressor
It is in independent compression mode of operation.
When the first four-way valve 5 is used to low pressure refrigerant being communicated to the slide plate chamber 3c of the first cylinder 3 and by high-pressure refrigerant
Supply the first air entry 3s and connect plunger cavity 4c, and the second four-way valve 6 is used to low pressure refrigerant supplying the second air entry
During 4s, compressor is in the single cylinder transfiguration mode of operation that the first cylinder 3 does not work, the whole participation of the compression chamber of the second cylinder 4 is compressed.
When the first four-way valve 5 is used to high-pressure refrigerant being communicated to the slide plate chamber 3c of the first cylinder 3 and by low pressure refrigerant
Supply the first air entry 3s and connect plunger cavity 4c, and the second four-way valve 6 is used to supply low pressure refrigerant to the second air-breathing
During mouth 4s, compressor is in twin-tub transfiguration mode of operation.
3rd four-way valve 8 switches to refrigeration mode or heating mode for control.
Thus, by means of the first four-way valve 5, the second four-way valve 6 and the 3rd four-way valve 8 connected state switching, realize
The commutation of fluid path in air-conditioning system 100, so that air-conditioning system 100 can work in 6 kinds of specific operational modes respectively：Independent pressure
Contracting refrigeration mode, independent compression heating mode, transfiguration (single cylinder) refrigeration mode, transfiguration (single cylinder) heating mode, transfiguration (twin-tub)
Refrigeration mode, transfiguration (twin-tub) heating mode.
In certain embodiments, the first four-way valve 5 has first to fourth interface, first interface 5d with being connected in housing,
Second interface 5c is connected with slide plate chamber 3c, and the 3rd interface 5s is used to lead to low pressure refrigerant, the 4th interface 5e respectively with the first air-breathing
Mouth 3s, plunger cavity 4c are connected, and the first four-way valve 5 is configured to changeable between the first connected state and the second connected state.
First interface 5d is connected with second interface 5c under the first connected state, the 3rd interface 5s is connected with the 4th interface 5e, the first gas
The compression chamber of cylinder 3 all participates in compression and the compression chamber subparticipation of the second cylinder 4 compression；First connects under the second connected state
5d's mouth is connected with the 4th interface 5e, second interface 5c is connected with the 3rd interface 5s, and the first cylinder 3 is not involved in compression and the second cylinder
4 compression chamber all participates in compression.
In certain embodiments, the second four-way valve 6 has first to fourth connector, the first connector 6c and the first four-way
3rd interface 5s of valve 5 is connected, and the second connector 6s is connected with the second air entry 4s, and the 3rd connector 6e is used to connect with second
Mouth 12a is connected, and the second four-way valve 6 is configured to changeable between the first connected state and the second connected state.Connect first
The first connector 6c and the 4th connector 6d is closed under logical state, and the second connector 6s is connected with the 3rd connector 6e, compression unit
Part can switch to independent compression mode of operation；The 3rd connector 6e and the 4th connector 6d is closed under the second connected state, the
One connector 6c is connected with the second connector 6s, and compression member can switch to transfiguration mode of operation.
Second four-way valve 6 is optionally a triple valve, and three interfaces of triple valve correspond to the of the second four-way valve 6 respectively
One connector 6c to the 3rd connector 6e.
Certainly, the present invention is not limited thereto, and in the second aspect embodiment shown in Fig. 8, the second four-way valve 6 can use two
Individual stop valve replaces, and one end of one of stop valve is formed as the first connector 6c and one end of another stop valve is formed as
3rd connector 6e, the other end of two stop valves are connected and are collectively forming as the second connector 6s.
In the third aspect embodiment shown in Fig. 9, the second four-way valve 6 includes stop valve and check valve, wherein check valve
One end be formed as one end of the first connector 6c and stop valve and be formed as the 3rd connector 6e, the other end of stop valve with it is unidirectional
The other end of valve is connected and is collectively forming and turned on for the second connector 6s, check valve from one end to the other end.
As shown in figure 1, the 3rd four-way valve 8 has first to fourth communication port 8e, the first communication port 8d and the second connected entrance
12a is connected, and the second communication port 8c is used to be connected with outdoor heat exchanger 9, the 3rd communication port 8s, the first connector 6c, the 3rd interface
5s be connected with each other it is logical, the 4th communication port 8e be used for be connected with indoor heat exchanger 14, the 3rd four-way valve 8 be configured to first connection
It is changeable between state and the second connected state, under the first connected state the first communication port 8d be connected with the second communication port 8c,
3rd communication port 8s is connected with the 4th communication port 8e, the first communication port 8d and the 4th communication port 8e phases under the second connected state
Even, the second communication port 8c is connected with the 3rd communication port 8s.
Wherein, the first to the 3rd four-way valve can be the solenoid operated four-way valve of solenoid controlled, in the during coil blackout
The second connected state is in when one connected state, coil obtain electric.Can also be by air pressure, hydraulic pressure, even control manually
Four-way valve.
Further, in addition to gas-liquid separator 7, the import of gas-liquid separator 7 and the 3rd communication port 8e of the 3rd four-way valve 8
It is connected, the first connector 6c for exporting the 3rd interface 5s with the first four-way valve 5, the second four-way valve 6 respectively of gas-liquid separator 7
It is connected.
Air-conditioning system 100 according to an embodiment of the invention, under independent compression mode of operation, the part of the second cylinder 4
The volume for participating in the compression chamber of compression be V2 ', and the volume of the compression chamber in the first cylinder 3 is V1, its satisfaction：V2 '/V1=5%-
30%.
Air-conditioning system 100 according to an embodiment of the invention, under transfiguration mode of operation, the second cylinder 4 all participates in
The volume of the compression chamber of compression is V2, and the volume of the compression chamber in the first cylinder 3 is V1, and it meets：V2/V1=30%-70%.
The air-conditioning system 100 of embodiment includes according to a fourth aspect of the present invention：Compressor 1 in above-described embodiment, it is outdoor
Heat exchanger 9, first throttle element 11, economizer 20, the second restricting element 13 and indoor heat exchanger 14.Outdoor heat exchanger 9
One end is connected with commutation valve group, and one end of first throttle element 11 is connected with the other end of outdoor heat exchanger 9, and economizer 20 has
First port 20a, third connectivity mouth 20c, the second port 20b and the 4th port 20d, the first port 20a and first segment of economizer
The other end of fluid element 11 is connected, and the third connectivity mouth 20c of economizer 20 is connected with the other end of outdoor heat exchanger 9, the second port
20b is used for compression refrigerant in being supplied by the valve group that commutates for compressor 1, and the of one end of the second restricting element 13 and economizer 20
Four port 20d are connected, and one end of indoor heat exchanger 14 is connected with the other end of the second restricting element 13, indoor heat exchanger 14 it is another
One end is connected by the valve group that commutates with compressor 1.
The difference of the embodiment and second aspect embodiment is flash vessel replacing with economizer, further to widen sky
The application of adjusting system 100.
The air-conditioning system 100 according to first to fourth embodiment of the invention is described in detail referring to Fig. 1 to Figure 11.
First embodiment
As shown in figure 1, air-conditioning system 100 according to a first embodiment of the present invention is by compressor 1, and the first four-way valve 5, second
Four-way valve 6, gas-liquid separator 7, the 3rd four-way valve 8, outdoor heat exchanger 9, outdoor fan 10, first throttle element 11, flash vessel
12, the second restricting element 13, indoor heat exchanger 14, and indoor fan 15 forms.Wherein motor 2, first is provided with compressor 1
The cylinder 4 of cylinder 3 and second.Motor 2, the first cylinder 3 and the second cylinder 4 are arranged on same root bent axle, the rotor rotation of motor 2
When, the rotation of the rotor of the first cylinder 3 and the second cylinder 4 is driven, so as in the realization pair of the inside of the first cylinder 3 and the second cylinder 4
The compression of refrigerant gas.
First four-way valve 5 has four interfaces, is first interface 5d, second interface 5c, the 3rd interface 5s and the 4th respectively
Interface 5e.When the first four-way valve 5 is in the first connected state, first interface 5d connects with second interface 5c, the 3rd interface 5s
Connected with the 4th interface 5e；When the first four-way valve 5 is in the second connected state, first interface 5d and the 4th interface 5e connections,
3rd interface 5s connects with second interface 5c.
Second four-way valve 6 has four connectors, is the first connector 6c respectively, the second connector 6s, the 3rd connector
6e and the 4th connector 6d, wherein the 4th connector 6d is closed all the time.When the second four-way valve 6 is in the first connected state, the
Two connector 6s and the 3rd connector 6e connections, the first connector 6c and the 4th connector 6d are in closed state；When the two or four
When port valve 6 is in the second connected state, the second connector 6s and the first connector 6c connections, the connections of the 3rd connector 6e and the 4th
Mouth 6d is in closed state.
3rd four-way valve 8 has four interfaces, is the first communication port 8d, the second communication port 8c, the 3rd communication port 8s respectively
With the 4th communication port 8e.When the 3rd 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, the 3rd communication port 8s and the 4th communication port 8e connections；When the 3rd four-way valve 8 is in the second connected state, the first communication port
8d and the 4th communication port 8e connections, the 3rd communication port 8s and the second communication port 8c connections.
First cylinder 3 is can to determine its cylinder whether to work by controlling slide plate chamber 3c pressure.First cylinder 3
With the first air entry 3s, first row gas port 3d and slide plate chamber 3c.First air entry 3s and the first four-way valve 5 the 4th interface 5e
Communicating, first row gas port 3d connects with 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, the first cylinder 3
There is no spring in vane slot.When slide plate chamber 3c leads to high pressure, the slide plate of the first cylinder 3 is pressed on the rotor in cylinder (figure
Not shown in), now the first cylinder 3 can be with normal work (participation gas compression), when slide plate chamber 3c leads to low pressure, described first
The slide plate of cylinder 3 is unable to the rotor (not shown) in compression cylinder, and now the first cylinder 3, which does not work, (can not participate in gas
Compression).When the first cylinder 3 participates in gas compression, gas is sucked by the first air entry 3s, and the gas after compression passes through first row
Gas port 3d is discharged into the housing of compressor 1, and discharges compressor 1 via the exhaust outlet 1d of compressor 1.When the first cylinder 3 participates in
During gas compression, its whole compression chamber volume is represented with V1.
Second cylinder 4 is that bypass is exhausted by plunger, so as 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 cylinder median septum or supplementary bearing.Second inhales
Second connector 6s of gas port 4s and the second four-way valve 6 is connected, and second exhaust port 4d connects with the inner space of compressor 1, post
Plug chamber 4c is drawn out to the outside of compressor 1 by pipeline, and is connected with the 4th interface 5e of the first four-way valve 5.In plunger cavity 4c
Intracavitary plunger (not shown) is housed, in the case where plunger cavity 4c leads to high-pressure refrigerant, plunger can block the bypass of cylinder
Hole (not shown).
When the plunger cavity 4c of the second cylinder 4 leads to high-pressure refrigerant, the pressure of plunger in plunger cavity 4c in gases at high pressure
Moved up under effect, block the by-pass prot of the first cylinder 3 completely.Now gas is sucked by the second air entry 4s, compressed, boosted
It is discharged into afterwards by second exhaust port 4d in the housing of compressor 1, finally discharges compressor 1 via the exhaust outlet 1d of compressor 1.
In such cases, whole volumes of the second cylinder 4 both participate in gas compression, i.e. the second cylinder 4 is run with full load.Second cylinder
4 compression chamber volume when being run with full load is represented with V2.
When the plunger cavity 4c of the second cylinder 4 leads to low pressure refrigerant, plunger in plunger cavity 4c under gravity to
Under drop, the by-pass prot of the second cylinder 4 is opened.Now, after gas refrigerant is sucked by the second air entry 4s, portion gas is from side
Through hole is directly bypassed back the air entry (concrete structure is not shown in figure) of compressor, remaining gas then after compression,
It is discharged into from exhaust outlet 4d in the housing of compressor 1, finally discharges compressor 1 via the exhaust outlet 1d of compressor 1.
In this case, in the second cylinder 4 only from by-pass prot to the volume of the compression chamber second exhaust port 4d
Compression is participated in, and gas compression, i.e. the second gas are not engaged in from the volume of the second air entry 4s to compression chamber by-pass prot
Cylinder 4 is with operation at part load.The volume for the compression chamber that second cylinder 4 is compressed with participation during operation at part load is represented with V2 '.
Gas-liquid separator 7 plays gas-liquid separation, and it can be stored not yet evaporates 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 refrigerant liquid hammer.
Flash vessel 12 is two-way flash vessel, and it has the second connected entrance 12a, third connecting mouth 12b and the first connected entrance
12c.3rd connector 6e of the second connected entrance 12a and the second four-way valve 6 is connected, third connecting mouth 12b and the second restricting element
13 are connected, and the first connected entrance 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 connected entrance 12c, be flowed out from third connecting mouth 12b.
Referring to the different working modes of the air-conditioning system 100 of Fig. 2 to Fig. 7 descriptions according to a first embodiment of the present invention.
According to the difference of the mode of operation of each four-way valve, air-conditioning system 100 as shown in Figure 1 can work in 6 kinds of different works respectively
Operation mode.
(1) independent compression refrigeration mode
As shown in Fig. 2 when the 3rd four-way valve 8, the first four-way valve 5, the second four-way valve 6 are in the first connected state,
Air-conditioning system 100 works in independent compression refrigeration mode.Now, the first communication port 8d and the second communication port of the 3rd four-way valve 8
8c is connected, and the 3rd communication port 8s and the 4th communication port 8e connections, the first interface 5d and second interface 5c of the first four-way valve 5 connect
It is logical, the 3rd interface 5s and the 4th interface 5e connections, the 3rd connector 6e and the second connector 6s connection of the second four-way valve 6, the
One connector 6c and the 4th connector 6d closings.
Under such a mode of operation, because second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3
3c connects with the enclosure interior of compressor 1.Because pressure is pressure at expulsion in the housing of compressor 1, it is meant that the first cylinder 3
Slide plate chamber 3c is connected with high pressure.Now the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder,
First cylinder 3 can be with normal work (V1 wholes volume participates in gas compression).Refrigerant gas by the first cylinder 3 the first air-breathing
Mouth 3s suctions, in the first cylinder 3 after compression, boosting (pressure Pd), by first row gas port 3d the first cylinders 3 of discharge, and then
Compressor 1 is discharged via exhaust outlet 1d.Subsequent refrigerant gas passes through the first communication port 8d of the 3rd four-way valve 8, the second circulation
Mouth 8c enters outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant gas is to environmental air heat release, and heat is by outdoor fan
The air of 10 forced convections is taken away, and exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid
Body flows through first throttle element 11, and pressure reduces, 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 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, absorb
By the heat in the room air of the forced convection of indoor fan 15, refrigeration effect is produced.Refrigerant after heat absorption is then evaporated to gas
Body, by the 4th connector 8e, the 3rd connector 8s of the 3rd four-way valve 8, into gas-liquid separator 7, gas is filtered out wherein
The drop that may be carried secretly in body, then flow back to the first air entry 3s of the first cylinder 3.Due to the second cylinder 4 plunger cavity 4c and
First air entry 3s of the first cylinder 3 is connection, and plunger cavity 4c connects with low pressure, and the by-pass prot of the second cylinder 4, which will be in, beats
Open state, the second cylinder 4 only have partial volume (V2 ') to participate in gas compression.Gas (pressure Pm) in flash vessel 12
Then second is flow to via the second connected entrance 12a of flash vessel 12, the 3rd connector 6e of the second four-way valve 6, the second connector 6s
Second air entry 4s of cylinder 4, V2 ' Partial shrinkages in the second cylinder, after boosting, compressor is discharged into via second exhaust port 4d
1 enclosure interior, last and the first cylinder 3 exhaust together, are discharged to outside compressor via exhaust outlet 1d.So circulate past
It is multiple.
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 being under intermediate pressure Pm states, and the discharge of two cylinders is that pressure is
Pd gases at high pressure, and the exhaust of the first cylinder 3 and the air-breathing of the second cylinder 4 do not mix, therefore this mode of operation is the
One cylinder and the cooperative independent compression refrigeration mode of the second cylinder portion volume.
(2) independent compression heating mode
When the 3rd four-way valve 8 is in the second connected state, the first four-way valve 5, the second four-way valve 6 are in the first connected state
When, air-conditioning system 100 as shown in Figure 1 works in independent compression heating mode, and system flow now is as shown in Figure 3.Now,
First communication port 8d of the 3rd four-way valve 8 and the 4th communication port 8e connections, the 3rd communication port 8s and the second communication port 8c connections, the
The first interface 5d of one four-way valve 5 connects with second interface 5c, the 3rd interface 5s and the 4th interface 5e connections, the second four-way valve 6
The 3rd connector 6e and the second connector 6s connection, the first connector 6c the other end closing.
Under such a mode of operation, the first four-way valve 5, the second four-way valve 6, the first cylinder 3, the second cylinder 4 state and
Independent compression refrigeration mode is identical, i.e. the first cylinder 3 all participates in gas compression, and the second cylinder 4 only partial volume (V2 ') participates in
Gas compression.Elder generation of the cold-producing medium stream through outdoor heat exchanger 9 and indoor heat exchanger 14 is differed only in independent compression refrigeration mode
Order is different afterwards.
Under such a mode of operation, because second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3
3c connects with the enclosure interior of compressor 1.Because pressure is pressure at expulsion in the housing of compressor 1, it is meant that the first cylinder 3
Slide plate chamber 3c is connected with high pressure.Now the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in cylinder,
First cylinder 3 can be with normal work (participation gas compression).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), the first cylinder 3 is discharged by first row gas port 3d, and then via exhaust outlet
1d discharges compressor 1.The refrigerant gas of compressor 1 is discharged by the first communication port 8d of the 3rd four-way valve 8, the 4th communication port
8e, it is introduced into indoor heat exchanger 14.Indoors in heat exchanger 14, refrigerant gas is to room air heat release, and heat is by indoor wind
The air for fanning 15 forced convections is taken away, to indoor heating.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid
Body.This refrigerant liquid flows through the second restricting element 13, and pressure reduces, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows
Enter 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 segment
After the decompression of the second throttle of fluid element 11 (pressure is reduced to Ps), into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation
Heat absorption, absorbs the heat in the outdoor air by the forced convection of outdoor fan 10.Refrigerant after heat absorption is then evaporated to gas, warp
The second communication port 8c, the 3rd communication port 8s of the 3rd four-way valve 8 are crossed, can in gas is wherein filtered out into gas-liquid separator 7
The drop that can be carried secretly, then flow back to the first air entry 3s of the first cylinder 3.Due to the plunger cavity 4c and the first gas of the second cylinder 4
First air entry 3s of cylinder 3 is connection, and plunger cavity 4c connects with low pressure, and the by-pass prot of the second cylinder 4 will be in open mode,
Second cylinder 4 only has partial volume (V2 ') to participate in gas compression.Gas phase (pressure Pm) in flash vessel 12 is then via sudden strain of a muscle
Second connected entrance 12a of steaming device 12, the 3rd connector 6e of the second four-way valve 6, the second connector 6s flow to the of the second cylinder 4
Two air entry 4s, V2 ' Partial shrinkages in the second cylinder, after boosting, it is discharged into via second exhaust port 4d in the housing of compressor 1
Portion, last and the first cylinder 3 exhaust together, are discharged to outside compressor via exhaust outlet 1d.So move in circles.
Under such a mode of operation, 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 indoor.And what it is due to the compression of the first cylinder 3 is to be in low pressure Ps
Gas under state, the compression of the second cylinder 4 is the gas being under intermediate pressure Pm states, and what two cylinders were discharged is pressure
Power is Pd gases at high pressure, and the exhaust of the first cylinder 3 and the air-breathing of the second cylinder 4 do not mix, therefore this mode of operation
For the first cylinder and the cooperative independent compression heating mode of the second cylinder portion volume.
(3) transfiguration (single cylinder) refrigeration mode
When the first four-way valve 5, the second four-way valve 6 are in the second connected state, the 3rd four-way valve 8 is in the first connected state
When, air-conditioning system 100 as shown in Figure 1 works in transfiguration (single cylinder) refrigeration mode, and system flow now is as shown in Figure 4.This
When, the first communication port 8d and the second communication port 8c connection of the 3rd four-way valve 8, the 3rd communication port 8s and the 4th communication port 8e connect
Logical, first interface 5d and the 4th interface the 5e connection of the first four-way valve 5, the 3rd interface 5s connect with second interface 5c, and the two or four
The first connector 6c and the second connector 6s connection of port valve 6, the 3rd connector 6e and the 4th connector 6d closings.
Under such a mode of operation, because second interface 5c and the 3rd 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 connects with the low pressure line that pressure is Ps, the first air entry of the first cylinder 3
3s connects with the high pressure in the housing of compressor 1.Now the slide plate of the first cylinder 3 is unable to rotor in compression cylinder (in figure not
Show), simultaneously because the first air entry 3s pressure of the first cylinder 3 is equal to the pressure at expulsion in the housing of compressor 1, the first gas
The rotor of cylinder 3 will dally, it is impossible to participate in gas compression.Due to the second cylinder 4 plunger cavity 4c and be communicated to the housing of compressor 1
Interior high pressure connects, and the plunger in plunger cavity 4c rises in the presence of high pressure, the by-pass prot blocked on the second cylinder 4, and second
Whole volumes (being represented with V2) of cylinder 4 both participate in gas compression.Now, refrigerant gas is sucked by the second air entry 4s,
In second cylinder 4 after compression, boosting (pressure Pd), the second cylinder 4 is discharged by second exhaust port 4d, and then via exhaust outlet 1d
Discharge compressor 1.Subsequent refrigerant gas enters outdoor by the first communication port 8d, the second communication port 8c of the 3rd four-way valve 8
Heat exchanger 9.In outdoor heat exchanger 9, refrigerant gas is to environmental air heat release, and heat is by the forced convection of outdoor fan 10
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 reduce, and partially liq shwoot comes 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 3rd connector 6e disconnections of the second four-way valve 6
And be arrested in flash vessel 12, liquid phase then after the decompression of the second throttle of the second restricting element 13 (pressure is reduced to Ps), is entered to enter the room
Interior heat exchanger 14.Indoors in heat exchanger 14, refrigerant evaporation endothermic, absorb by the room air of the forced convection of indoor fan 15
In heat, produce refrigeration effect.Refrigerant after heat absorption is then evaporated to gas, by the 4th connected entrance of the 3rd four-way valve 8
8e, third connecting mouth 8s, into gas-liquid separator 7, the drop that may be carried secretly in gas is wherein filtered out, then by second
The the second connector 6s and the first connector 6c of four-way 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 because the first cylinder 3 is in not mode of operation, only the second gas
Cylinder 4 works, and varying capacity operation is belonged to for twin-tub full capacity, therefore this mode of operation is transfiguration (single cylinder) refrigeration mould
Formula.
(4) transfiguration (single cylinder) heating mode
When the first four-way valve 5, the second four-way valve 6, the 3rd four-way valve 8 are in the second connected state, as shown in Figure 1
Air-conditioning system 100 works in transfiguration (single cylinder) heating mode, and system flow now is as shown in Figure 5.Now, the 3rd four-way valve 8
The first communication port 8d and the 4th communication port 8e connection, the 3rd communication port 8s and the second communication port 8c connection, the first four-way valve 5
First interface 5d and the 4th interface 5e connections, the 3rd interface 5s connect with second interface 5c, the first connector of the second four-way valve 6
6c and the second connector 6s connections, the 3rd connector 6e and the 4th connector 6d closings.
Under such a mode of operation, the first four-way valve 5, the second four-way valve 6, the first cylinder 3, the second cylinder 4 state and
Transfiguration (single cylinder) refrigeration mode is identical, i.e. the first cylinder 3 is not involved in gas compression, and 4 whole volumes of the second cylinder participate in gas pressure
Contracting.Priority of the cold-producing medium stream through outdoor heat exchanger 9 and indoor heat exchanger 14 is differed only in transfiguration (single cylinder) refrigeration mode
Order is different.
Under such a mode of operation, because second interface 5c and the 3rd 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 connects with the low pressure line that pressure is Ps, the first air entry of the first cylinder 3
3s connects with the high pressure in the housing of compressor 1.Now the slide plate of the first cylinder 3 is unable to rotor in compression cylinder (in figure not
Show), simultaneously because the air entry pressure of the first cylinder 3 is equal to the pressure at expulsion in the housing of compressor 1, the first cylinder 3
Rotor will dally, it is impossible to participate in gas compression.Due to the second cylinder 4 plunger cavity 4c and be communicated in the housing of compressor 1
High pressure connects, and the plunger in plunger cavity 4c rises in the presence of high pressure, the by-pass prot blocked on the second cylinder 4, the second cylinder 4
Whole volumes (being represented with V2) both participate in gas compression.Now, refrigerant gas is inhaled by the second air entry 4s of the second cylinder 4
Enter, in the second cylinder 4 after compression, boosting (pressure Pd), the second cylinder 4 is discharged by second exhaust port 4d, and then via row
Gas port 1d discharges compressor 1.Subsequent refrigerant gas enters by the first communication port 8d, the 4th communication port 8e of the 3rd four-way valve 8
Enter indoor heat exchanger 14.Indoors in heat exchanger 14, refrigerant gas is forced to room air heat release, heat by indoor fan 15
The air of convection current is taken away, with to indoor heating.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This
Refrigerant liquid flows through the second restricting element 13, and pressure reduces, 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 gas phase is due to the second four-way valve
6 the 3rd connector 6e disconnects and is arrested in flash vessel 12, and liquid phase is then after the decompression of the second throttle of first throttle element 11
(pressure is reduced to Ps), into outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic, absorb by outdoor fan 10
Heat in the outdoor air of forced convection.Refrigerant after heat absorption is then evaporated to gas, by the second of the 3rd four-way valve 8
Port 8c, the 3rd communication port 8s, into gas-liquid separator 7, the drop that may be carried secretly in gas is wherein filtered out, then pass through
The first connector 6c, the second connector 6s of second four-way valve 6 flow back to the second air entry 4s of the second cylinder 4.So circulate past
It is multiple.
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 because the first cylinder 3 is in not mode of operation, only the second gas
Cylinder 4 works, and varying capacity operation is belonged to for twin-tub full capacity, therefore this mode of operation is that transfiguration (single cylinder) heats mould
Formula.
(5) transfiguration (twin-tub) refrigeration mode
When the 3rd four-way valve 8, the first four-way valve 5 are in the first connected state, the second four-way valve 6 is in the second connected state
When, air-conditioning system 100 as shown in Figure 1 works in transfiguration (twin-tub) refrigeration mode, and system flow now is as shown in Figure 6.This
When, the first communication port 8d and the second communication port 8c connection of the 3rd four-way valve 8, the 3rd communication port 8s and the 4th communication port 8e connect
Logical, the first interface 5d of the first four-way valve 5 connects with second interface 5c, the 3rd interface 5s and the 4th interface 5e connections, and the two or four
The first connector 6c and the second connector 6s connection of port valve 6, the 3rd connector 6e and the 4th connector 6d closings.
Under such a mode of operation, because second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3
3c connects with the enclosure interior of compressor 1.Because pressure is pressure at expulsion in the housing of compressor 1, the slide plate chamber of the first cylinder 3
3c connects with 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 (participation gas compression).Because the plunger cavity 4c of the second cylinder 4 and the first air entry 3s of the first cylinder 3 are connections
, plunger cavity 4c connects with low pressure, and the by-pass prot of the second cylinder 4 is in open mode, and the second cylinder 4 only has partial volume
(V2 ') can participate in gas compression.
Now, 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), the first cylinder 3 is discharged by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas
Sucked by the second air entry 4s of the second cylinder 4, after the V2 ' Partial shrinkages, boosting in the second cylinder, via second exhaust port 4d
Be discharged into the enclosure interior of compressor 1, and the first cylinder 3 exhaust together, be 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 3rd four-way valve 8.
In outdoor heat exchanger 9, refrigerant gas to environmental air heat release, heat by the forced convection of outdoor fan 10 air band
Walk, exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through first throttle element
11, pressure reduces, and partially liq shwoot comes out, and becomes gas-liquid mixture, flows into flash vessel 12.In flash vessel 12, shwoot goes out
Gas-liquid mixture formed gas-liquid two-phase layering.Wherein gas phase is because the 3rd connector 6e of the second four-way valve 6 disconnects and blocks
In flash vessel 12, liquid phase then after the decompression of the second throttle of the second restricting element 13 (pressure is reduced to Ps), gets in heat exchange
Device 14.Indoors in heat exchanger 14, refrigerant evaporation endothermic, the heat in the room air by the forced convection of indoor fan 15 is absorbed
Amount, produce refrigeration effect.Refrigerant after heat absorption is then evaporated to gas, by the 4th communication port 8e of the 3rd four-way valve 8, the 3rd
Communication port 8s, into gas-liquid separator 7, the drop that may be carried secretly in gas is wherein filtered out, then it is divided into two-way, the first via
Flow back to the first air entry 3s of the first cylinder 3 by the 3rd interface 5s, the 4th interface 5e, the second tunnel by the first connector 6c,
Second connector 6s flows 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 because the first cylinder 3 and the second cylinder 4 work simultaneously, it
All from pressure be Ps low pressure line air-breathing, while toward pressure be Pd pressure duct be vented, two cylinders are equivalent to parallel connection
Mode of operation, therefore this mode of operation is the two cooperative transfiguration of cylinder (twin-tub) refrigeration modes.
(6) transfiguration (twin-tub) heating mode
When the first four-way valve 5 is in the first connected state, the 3rd four-way valve 8, the second four-way valve 6 are in the second connected state
When, air-conditioning system 100 as shown in Figure 1 works in transfiguration (twin-tub) heating mode, and system flow now is as shown in Figure 7.This
When, the first communication port 8d of the 3rd four-way valve 8 and the 4th communication port 8e connections, the 3rd communication port 8s and the second communication port 8c connect
Logical, the first interface 5d of the first four-way valve 5 connects with second interface 5c, the 3rd interface 5s and the 4th interface 5e connections, and the two or four
The first connector 6c and the second connector 6s connection of port valve 6, the 3rd connector 6e and the 4th connector 6d closings.
Under such a mode of operation, because second interface 5c and first interface 5d are communicated so that the slide plate chamber of the first cylinder 3
3c connects with the enclosure interior of compressor 1.Because pressure is pressure at expulsion in the housing of compressor 1, the slide plate chamber of the first cylinder 3
3c connects with high pressure, and the slide plate of the first cylinder 3 is pressed in (not shown) on the rotor in the first cylinder 3, the first cylinder 3
Can be with normal work (participation gas compression).Simultaneously because the air entry 3s of the plunger cavity 4c of the second cylinder 4 and the first cylinder 3
It is connection, plunger cavity 4c connects with low pressure, and the by-pass prot of the second cylinder 4 is in open mode, and the second cylinder 4 only has part to hold
Product (V2 ') can participate in gas compression.
Now, 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), the first cylinder 3 is discharged by first row gas port 3d, and then compressor 1 is discharged via exhaust outlet 1d.Meanwhile gas
Sucked by the second air entry 4s of the second cylinder 4, after the V2 ' Partial shrinkages, boosting in the second cylinder, via second exhaust port 4d
Be discharged into the enclosure interior of compressor 1, and the first cylinder 3 exhaust together, be 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 3rd four-way valve 8
14.Indoors in heat exchanger 14, refrigerant gas to room air heat release, heat by the forced convection of indoor fan 15 air band
Walk, to indoor heating.Exothermic refrigerant gas then condenses out, and becomes refrigerant liquid.This refrigerant liquid flows through
Second restricting element 13, pressure reduce, and partially liq shwoot comes out, and become gas-liquid mixture, flow into flash vessel 12.In flash vessel
In 12, the gas-liquid mixture that shwoot goes out forms gas-liquid two-phase layering.Wherein gas phase is due to the 3rd connector 6e of the second four-way valve 6
Disconnect and be arrested in flash vessel 12, liquid phase then after the decompression of the second throttle of first throttle element 11 (pressure is reduced to Ps), is entered
Enter outdoor heat exchanger 9.In outdoor heat exchanger 9, refrigerant evaporation endothermic, absorb empty by the outdoor of the forced convection of outdoor fan 10
Heat in gas.Refrigerant after heat absorption is then evaporated to gas, by the second communication port 8c of the 3rd four-way valve 8, the 3rd circulation
Mouth 8s, into gas-liquid separator 7, then the drop that may be carried secretly in gas is wherein filtered out is divided into two-way, the first via is passed through
The 3rd interface 5s, the 4th interface 5e of first four-way valve flow back to the first air entry 3s of the first cylinder 3, and the second tunnel passes through the two or four
The first connector 6c, the second connector 6s of port valve 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 because the first cylinder 3 and the second cylinder 4 work simultaneously, it
All from pressure be Ps low pressure line air-breathing, while toward pressure be Pd pressure duct be vented, two cylinders are equivalent to parallel connection
Mode of operation, therefore this mode of operation is the two cooperative transfiguration of cylinder (twin-tub) heating modes.
In summary, technical solutions according to the invention can realize cutting for independent compression and two grades of transfiguration methods of operation
Change.When independent compression is run, the volume of cylinder for participating in compression is respectively V1 and V2 ', when two grades of transfigurations are run, two grades of capacity difference
It is V2, V1+V2 '.
Preferably, the volume of cylinder for participating in compression is defined to：During independent compression, the part of the second cylinder 4 ginseng
Compression chamber volume with compression is the 5%-30%, i.e. V2 '/V1=5%-30% of the compression chamber volume of the first cylinder 3；Transfiguration is transported
During row, whole compression chamber volumes that the second cylinder 4 participates in compression are the 30%-70% of the compression chamber volume of the first cylinder 3, i.e.,
V2/V1=30%-70%.
Second embodiment
The difference of second embodiment and first embodiment is：The other elements of the second four-way valve 6 in first embodiment
Instead of the function of integrally realizing of air-conditioning system 100 is constant.
As shown in figure 8, it is by the second four-way valve 6 in Fig. 1 two stop valves (the first stop valve 16 and the second stop valve
17) come the scheme substituted, the various functions of the system described in Fig. 1-Fig. 7 can equally be realized.
In such a scheme：When the first stop valve 16 turned on, the second stop valve 17 is closed, now the 3rd connector 6e and
Second connector 6s is communicated, and the first connector 6c and the second connector 6s are blocked, and the first connection is in equivalent to the second four-way valve 6
State, when the first stop valve 16 is closed, the second stop valve 17 turns on, now the 3rd connector 6e and the second connector 6s resistances
Disconnected, the first connector 6c and the second connector 6s are communicated, and the second connected state is in equivalent to the second four-way valve 6.
It is appreciated that the air-conditioning system 100 of second embodiment of the invention also has the institute of air-conditioning system 100 of first embodiment
The above-mentioned function having, it can also run, will not be described here under above-mentioned six kinds of mode of operations.
3rd embodiment
The difference of 3rd embodiment and first embodiment is：The other elements of the second four-way valve 6 in first embodiment
Instead of the function of integrally realizing of air-conditioning system 100 is constant.
As shown in figure 9, it is to carry out the second four-way valve 6 in Fig. 1 with first stop valve 16 and a check valve
The scheme of replacement, it can equally realize the various functions of the system described in Fig. 1-Fig. 7.In such a scheme：When the first cut-off
When valve 16 turns on, now the 3rd connector 6e and the second connector 6s are communicated, and the first connector 6c and the second connector 6s are blocked
(because the pressure Pm of flash vessel 12 is more than the pressure Ps of gas-liquid separator 7), the first connected state is in equivalent to the second four-way valve 6
State；When the first stop valve 16 is closed, now the 3rd connector 6e and the second connector 6s is blocked, the first connector 6c and second
Connector 6s is communicated, and the second connected state is in equivalent to the second four-way valve 6.
It is appreciated that the air-conditioning system 100 of third embodiment of the invention also has the institute of air-conditioning system 100 of first embodiment
The above-mentioned function having, it can also run, will not be described here under above-mentioned six kinds of mode of operations.
Fourth embodiment
The difference of fourth embodiment and first embodiment is：Flash vessel 12 can be replaced with economizer 20, equally may be used
To realize foregoing various operational modes.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 10 and Figure 11, economizer 20 be one have 4 ports (i.e. the first port 20a, the second port 20b,
Third connectivity mouth 20c, the 4th port 20d) hollow container, between wherein third connectivity mouth 20c and the 4th port 20d be provided with heat exchange
Manage, the fluid in heat exchanger tube can carry out septate heat transfer with the fluid of hollow space.
Figure 10 is the schematic diagram of the air-conditioning system 100 of fourth embodiment in cooling mode.As shown in Figure 10, in refrigeration mould
Under formula, the import of first throttle element 11 is connected with outdoor heat exchanger 9, the outlet of first throttle element 11 and the of economizer 20
One port 20a is connected, and the 3rd connector 6e of the second port 20b and the second four-way valve 6 is connected, and third connectivity mouth 20c and outdoor are changed
Hot device 9 is connected, and the 4th port 20d and the second restricting element 13 import are connected, and the outlet and outdoor of the second restricting element 13 are changed
Hot device 14 is connected.
Now, the HTHP liquid refrigerant flowed out from outdoor heat exchanger 9 is divided into two-way, and the first via is through first-class member
Part 11 enters economizer 20 after throttling, and the second road is directly entered the heat exchanger tube in economizer 20 from third connectivity mouth 20c.First via system
Cryogen shwoot because of pressure reduction after throttling, become the gas-liquid mixture of low-temp low-pressure, the gas-liquid mixture of this low-temp low-pressure
The liquid refrigerant in economizer heat exchanger tube is cooled down, liquid refrigerant is had higher degree of supercooling, refrigerating capacity can be improved.The
Gas-liquid mixture all the way evaporates after absorbing the heat of the second road refrigerant liquid, passes through the second four-way valve 6 in a gaseous form
The 3rd connector 6e, the second connector 6s enter the second cylinder 4 the second air entry 4s, realize independent compression run.It is economical
There is the liquid refrigerant compared with high supercooling degree then to flow out economizer 20 by the 4th port 20d, by the second restricting element in device 20
Heat exchanger 14 is got in after 13 second throttles, completes evaporation in heat exchanger 14 indoors.
Figure 11 is the schematic diagram of the air-conditioning system 100 of fourth embodiment in a heating mode.As shown in figure 11, in heating mould
Under formula, the import of first throttle element 11 is connected with indoor heat exchanger 14, the outlet of first throttle element 11 and economizer 20
First port 20a is connected, and the 3rd connector 6e of the second port 20b and the second four-way valve 6 is connected, third connectivity mouth 20c and interior
Heat exchanger 14 is connected, and the 4th port 20d and the second restricting element 13 import are connected, the outlet and outdoor of the second restricting element 13
Heat exchanger 9 is connected.
Now, the HTHP liquid refrigerant flowed out from indoor heat exchanger 14 is divided into two-way, and the first via is through first-class
Element 11 enters economizer 20 after throttling, and the second road is directly entered the heat exchanger tube in economizer 20 from third connectivity mouth 20c.The first via
Refrigerant shwoot because of pressure reduction after throttling, become the gas-liquid mixture of low-temp low-pressure, the gas-liquid mixed of this low-temp low-pressure
Liquid refrigerant in the heat exchanger tube of thing cooling economizer 20, makes liquid refrigerant have higher degree of supercooling, can improve evaporation
Heat absorption capacity.The gas-liquid mixture of the first via evaporates after absorbing the heat of the second road refrigerant liquid, passes through in a gaseous form
The 3rd connector 6e, the second connector 6s of second four-way valve 6 enter the second air entry 4s of the second cylinder 4, realize independent pressure
Contracting operation.There is the liquid refrigerant compared with high supercooling degree then to flow out economizer 20 by the 4th port 20d, by the in economizer 20
Heat exchanger 9 is got in after the second throttle of two restricting element 13, completes evaporation in heat exchanger 9 indoors.
It is appreciated that the air-conditioning system 100 of fourth embodiment of the invention also has the institute of air-conditioning system 100 of first embodiment
The above-mentioned function having, it can also run, will not be described here under above-mentioned six kinds of mode of operations.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", " top ", " bottom " " interior ",
" outer ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description this
Invent and simplify description, rather than the structure or element of instruction or hint meaning there must be specific orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.In addition, define " first ", the feature of " second " can be with
Express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that 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 to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
- A kind of 1. compressor, it is characterised in that including：Housing, the housing have exhaust outlet；Compression member, the compression member include the first cylinder, the second cylinder, the first slide plate, the second slide plate, first piston, the Two pistons, first cylinder have the first air entry, first row gas port and vane slot, and first slide plate is located at the slide plate In groove and the vane slot is formed as slide plate chamber positioned at the part at the back of first slide plate, and first slide plate is constructed Into when being pressed in the logical high-pressure refrigerant of the slide plate chamber on the first piston and leading to low pressure refrigerant in the slide plate chamber Depart from the first piston, second cylinder has the second air entry, second exhaust port, plunger cavity and by-pass prot, described Plunger cavity is arranged on the median septum or supplementary bearing of second cylinder, is provided with plunger in the plunger cavity, the plunger is by structure Cause to block the by-pass prot when the plunger cavity leads to high-pressure refrigerant and opened wide when the plunger cavity leads to low pressure refrigerant The by-pass prot, so that the portion gas of the second cylinder of suction bypasses back the second air entry by by-pass prot.
- A kind of 2. air-conditioning system, it is characterised in that including：Compressor as claimed in claim 1；Commutate valve group, the commutation valve group and the exhaust outlet, first air entry, second air entry, the plunger Chamber, the slide plate chamber, which are connected, thinks that it supplies any of low pressure refrigerant, middle compression refrigerant or high-pressure refrigerant, so that institute Compression member is stated between transfiguration mode of operation and independent compression mode of operation to switch；Outdoor heat exchanger, one end of the outdoor heat exchanger are connected with the commutation valve group；First throttle element, one end of the first throttle element are connected with the other end of the outdoor heat exchanger；Flash vessel, the flash vessel have the first connected entrance, the second connected entrance 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 it is the pressure that second connected entrance, which is used for by the commutation valve group, Compression refrigerant in the supply of contracting machine；Second restricting element, one end of second restricting element are connected with the third connecting mouth of the flash vessel；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 by the commutation valve group with the compressor.
- A kind of 3. air-conditioning system, it is characterised in that including：Compressor as claimed in claim 1；Commutate valve group, the commutation valve group and the exhaust outlet, first air entry, second air entry, the plunger Chamber, the slide plate chamber, which are connected, thinks that it supplies any of low pressure refrigerant, middle compression refrigerant or high-pressure refrigerant, so that institute Compression member is stated between transfiguration mode of operation and independent compression mode of operation to switch；Outdoor heat exchanger, one end of the outdoor heat exchanger are connected with the commutation valve group；First throttle element, one end of the first throttle element are 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, and the of the economizer One port is connected with the other end of the first throttle element, and the second port of the economizer is another with the outdoor heat exchanger One end is connected, and it is compression refrigerant in compressor supply that the third connectivity mouth, which is used for by the commutation valve group,；Second restricting element, one end of second restricting element are connected with the 4th port of the economizer；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 by the commutation valve group with the compressor.
- 4. the air-conditioning system according to Claims 2 or 3, it is characterised in that the commutation valve group includes first to the 3rd 4 Port valve,When first four-way valve is used to high-pressure refrigerant being communicated to the slide plate chamber of the first cylinder and supplies low pressure refrigerant First air entry with connect plunger cavity, and when second four-way valve is used to supply middle compression refrigerant to the second air entry, The compressor is in independent compression mode of operation；When first four-way valve is used to low pressure refrigerant being communicated to the slide plate chamber of the first cylinder and supplies high-pressure refrigerant First air entry with connect plunger cavity, and when second four-way valve is used to low pressure refrigerant supplying the second air entry, institute State compressor and be in the single cylinder transfiguration mode of operation that the first cylinder does not work, the whole participation of the compression chamber of the second cylinder is compressed；When first four-way valve is used to high-pressure refrigerant being communicated to the slide plate chamber of the first cylinder and supplies low pressure refrigerant First air entry with connect plunger cavity, and when second four-way valve is used to supply low pressure refrigerant to the second air entry, The compressor is in first cylinder and second cylinder participates in the twin-tub transfiguration mode of operation of compression；3rd four-way valve switches to refrigeration mode or heating mode for control.
- 5. air-conditioning system according to claim 4, it is characterised in thatFirst four-way valve has first to fourth interface, and with being connected in the housing, described second connects the first interface Mouthful it is connected with the first slide plate chamber, the 3rd interface is for leading to low pressure refrigerant, and the 4th interface is respectively with described the One air entry, the plunger cavity are connected, first four-way valve be configured to the first connected state and the second connected state it Between it is changeable；Under the first connected state the first interface be connected with the second interface, the 3rd 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 described 3rd Mouth is connected.
- 6. air-conditioning system according to claim 5, it is characterised in that second four-way valve has first to fourth connection Mouthful, first connector is connected with the 3rd interface of first four-way valve, second connector and second air-breathing Mouth is connected, and the 3rd connector is used to be connected with the economizer or the flash vessel, and the 4th interface is closed all the time, institute State the second four-way valve be configured to it is changeable between the first connected state and the second connected state；First connector and the 4th connector are closed under the first connected state, second connector and described the Three connectors are connected, and the 3rd connector and the 4th connector are closed under the second connected state, first connection Mouth is connected with second connector.
- 7. air-conditioning system according to claim 6, it is characterised in that second four-way valve can be a triple valve, Three interfaces of triple valve correspond to the first connector of second four-way valve to the 3rd connector respectively；OrSecond four-way valve includes two stop valves, one end of one of stop valve be formed as the first connector and another One end of stop valve is formed as the 3rd connector, and the other end of two stop valves is connected and is collectively forming as the second connector；Or PersonSecond four-way valve includes stop valve and check valve, and one end of wherein check valve is formed as the first connector and stop valve One end be formed as the 3rd connector, the other end connection of the other end and stop valve of the check valve and be collectively forming as second Connector, the check valve turn on from described one end to the other end.
- 8. air-conditioning system according to claim 4, it is characterised in that the 3rd four-way valve has first to fourth circulation Mouthful, first communication port is connected with the exhaust outlet, and second communication port is used to be connected with outdoor heat exchanger, and the described 3rd Communication port, first connector, the 3rd interface be connected with each other it is logical, the 4th communication port be used for and indoor heat exchanger connect Connect, the 3rd four-way valve is configured to changeable 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 3rd 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 3rd communication port.
- 9. air-conditioning system according to claim 4, it is characterised in that also including gas-liquid separator, the gas-liquid separator Import be connected with the 3rd communication port of the 3rd four-way valve, the outlet of the gas-liquid separator respectively with first four-way The 3rd interface, the first connector of second four-way valve of valve are connected.
- 10. the air-conditioning system according to Claims 2 or 3, it is characterised in that under independent compression mode of operation, described The volume that two cylinder portions participate in the compression chamber of compression be V2 ', and the volume of the compression chamber in first cylinder is V1, and it is expired Foot：V2 '/V1=5%-30%.
- 11. the air-conditioning system according to Claims 2 or 3, it is characterised in that under transfiguration mode of operation, second gas The volume that cylinder all participates in the compression chambers of compression be V2, and the volume of the compression chamber in first cylinder is V1, its satisfaction：V2/ V1=30%-70%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195600.8A CN107842486B (en) | 2017-11-24 | 2017-11-24 | Compressor and air conditioning system with same |
| PCT/CN2018/112751 WO2019100913A1 (en) | 2017-11-24 | 2018-10-30 | Compressor, and air conditioning system having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195600.8A CN107842486B (en) | 2017-11-24 | 2017-11-24 | Compressor and air conditioning system with same |
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| CN107842486A true CN107842486A (en) | 2018-03-27 |
| CN107842486B CN107842486B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711195600.8A Active CN107842486B (en) | 2017-11-24 | 2017-11-24 | Compressor and air conditioning system with same |
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