CN108253654A - The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved - Google Patents
The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved Download PDFInfo
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- CN108253654A CN108253654A CN201810234520.7A CN201810234520A CN108253654A CN 108253654 A CN108253654 A CN 108253654A CN 201810234520 A CN201810234520 A CN 201810234520A CN 108253654 A CN108253654 A CN 108253654A
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- compressor
- reversing valve
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- 230000004087 circulation Effects 0.000 title claims abstract description 19
- 238000005057 refrigeration Methods 0.000 claims abstract description 174
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 56
- 238000007906 compression Methods 0.000 claims description 56
- 238000001704 evaporation Methods 0.000 claims description 32
- 230000008020 evaporation Effects 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000001276 controlling effect Effects 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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- 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
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- 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
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
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- 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
Abstract
The invention discloses a kind of achievable variable-flow single-stage circulations and the heat pump system of dual-stage servo system, it is desirable to provide a kind of easy switching, the low system of initial cost.Including refrigeration compressor set, the first four-way reversing valve, the second four-way reversing valve, third four-way reversing valve, intercooler, outdoor unit, indoor unit, first throttle valve, second throttle, the first valve, the second valve, third valve and the 4th valve.The first exhaust interface of refrigeration compressor set is connect by the second valve with the 4th interface of the second four-way reversing valve, first air-breathing interface of refrigeration compressor set is connect with the second interface of the second four-way reversing valve, the second exhaust interface of refrigeration compressor set is connect by the 4th valve with the second interface of third four-way reversing valve, and the second air-breathing interface of refrigeration compressor set is connect with the 4th interface of third four-way reversing valve.The system realizes switching by the keying of regulating valve and the interface transformation of four-way reversing valve, improves cooling in summer amount, operating cost is low.
Description
Technical field
The present invention relates to refrigeration technology field, more specifically, being to be related to a kind of achievable variable-flow single-stage parallel circulating
With the heat pump system of dual-stage servo system.
Background technology
With the increase of environmental protection pressure, country widelys popularize coal and changes electric product.Air source heat pump is since it is with energy-saving ring
The characteristic of guarantor is widely used in a variety of applications.In order to adapt to winter low temperature environment, using two-stage compression cycle air source heat pump, to carry
High system effectiveness, and heating can be realized under -25 DEG C of outdoor temperatures.
Existing two-stage compression heat pump system has single-head and multi-machine heads two ways, generally using centre in single-head
Tonifying Qi mode realizes Two-stage Compression, at this point, the minimum cylinder volume of high pressure stage compressor and low-pressure stage compressor than is generally fixed as 1: 3
Or 1: 2.Since the evaporating pressure of heat pump system can change with outdoor environment temperature, the intermediate pressure of system and hiigh pressure stage pressure
Contracting machine and the cylinder ratio of low-pressure stage compressor also can constantly change, this is not for designed high-low pressure cylinder ratio
Economical.Although existing multi-machine heads mode height is arbitrarily downgraded, compressor can ensure suitably to compress when with converter technique
Suitable cylinder ratio, but cost is higher and compressed format is fixed, during summer cooling, for two-stage compression heat pump system
Speech, if the air-source of the design needed according to disclosure satisfy that -25 DEG C of outdoor temperature space heating loads, in other words these areas
Heat pump is set based on winter thermic load, and hiigh pressure stage and low-pressure stage compressor cannot use simultaneously during summer cooling, meeting during operation
There is more than half compressor to leave unused, operating cost is high, and system initial cost is big.
Invention content
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide one kind can be according to refrigerating capacity need
Carry out single stage compress cycle with two-stage compression cycle switch, refrigerant flow is adjustable, can reduce user's operating cost and just
The heat pump system of investment.
The technical solution adopted to achieve the purpose of the present invention is：
The heat pump system of a kind of achievable variable-flow single-stage circulation and dual-stage servo system, including refrigeration compressor set, the one or four
Logical reversal valve, the second four-way reversing valve, third four-way reversing valve, intercooler, outdoor unit, indoor unit, first throttle valve, the
Two throttle valves, the first valve, the second valve, third valve and the 4th valve；The first exhaust interface of the refrigeration compressor set
It is connect by second valve with the 4th interface of second four-way reversing valve, the first air-breathing of the refrigeration compressor set
Interface is connect with the second interface of second four-way reversing valve, and the second exhaust interface of the refrigeration compressor set passes through described
4th valve is connect with the second interface of the third four-way reversing valve, the second air-breathing interface of the refrigeration compressor set and institute
State the 4th interface connection of third four-way reversing valve；The first interface of second four-way reversing valve and the intercooler
Second interface connects, the third interface of the intercooler respectively with the second interface of first four-way reversing valve and described
The first interface connection of third four-way reversing valve, the first interface of the intercooler by the third valve respectively with institute
It states second throttle to connect with first valve one end, the other end of first valve and the first of first four-way reversing valve
Interface connects, and the third interface of first four-way reversing valve passes through the first throttle valve and the 4th of the intercooler the
Interface connects, and the 4th interface of first four-way reversing valve passes through the third of the outdoor unit and the third four-way reversing valve
Interface connects；The other end of the second throttle is connected by the third interface of the indoor unit and second four-way reversing valve
It connects.
The refrigeration compressor set includes multiple compressors, and the exhaust end of the compressor, which is connected in parallel, is divided into first exhaust
Interface and second exhaust interface, the suction end of the compressor, which is connected in parallel, is divided into the first air-breathing interface and the second air-breathing interface,
Regulating valve is respectively arranged between the exhaust end of the adjacent compressor and between the suction end of the adjacent compressor.
When being run with single stage compress refrigeration cycle summer, the regulating valve in the refrigeration compressor set is fully open, institute
It states the first valve and the 4th valve is opened, second valve and third valve are closed, and the first of first four-way reversing valve
Interface is connected with the 4th interface, and the second interface of the first four-way reversing valve is connected with third interface, the second four-way reversing valve
First interface be connected with the 4th interface, the second interface of the second four-way reversing valve is connected with third interface, third four-way
The first interface of reversal valve is connected with the 4th interface, and the second interface of third four-way reversing valve is connected with third interface；Pressure
Second exhaust interface of the working medium through the refrigeration compressor set, the 4th valve, third four-way reversing valve after contracting enter the room
It is condensed in outer machine, condensed working medium enters the second throttle, throttling after first four-way reversing valve, the first valve
Working medium afterwards, which enters in the indoor unit, evaporates, and generates refrigeration phenomenon, and the working medium after evaporation is returned through second four-way reversing valve
The first air-breathing interface to the refrigeration compressor set returns to the refrigeration compressor set；By controlling the refrigeration compressor set
The quantity of middle compressor operating realizes energy adjustment.
When summer is not exclusively to cool down two-stage compression cycle refrigerating operaton among two-step throttle, the first valve is closed, the
Two valves, third valve and the 4th valve are opened, and the first interface of the first four-way reversing valve is connected with second interface, and the one or four
The third interface of logical reversal valve is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface,
The second interface of second four-way reversing valve is connected with third interface, the first interface of third four-way reversing valve and the 4th interface phase
Connection, the second interface of third four-way reversing valve are connected with third interface；It is connect close to the refrigeration compressor set second exhaust
The compressor of mouth is as high pressure stage compressor, and the compressor close to the refrigeration compressor set first exhaust interface is as low-pressure stage
Compressor；The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, and the suction end of low-pressure stage compressor is mutually connected
Logical, exhaust end is interconnected, and is not connected mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；
The second exhaust interface through the refrigeration compressor set, the 4th valve, third four-way change after high pressure stage compressor compresses working medium
Enter in the outdoor unit to valve and condense, condensed working medium is through described in first four-way reversing valve, first throttle valve entrance
Evaporation endothermic in intercooler presses through the degree of superheat of heat steam in reduction, the working medium after evaporation is through the third valve, second
Throttle valve is evaporated into the indoor unit, generates refrigeration phenomenon, working medium is through second four-way reversing valve, refrigeration compressor later
First air-breathing interface of group enters the low-pressure stage compressor of the refrigeration compressor set；Low-pressure stage compressor passes through after working medium is compressed
First exhaust interface, the second valve, the second four-way reversing valve of the refrigeration compressor set, which enter in the intercooler, to be put
Heat reduces the degree of superheat, and second air-breathing interface of the working medium again through third four-way reversing valve, the refrigeration compressor set enters institute later
The high pressure stage compressor of refrigeration compressor set is stated, completes not exclusively to cool down two-stage compression cycle among two-step throttle；Pass through control
The keying of start and stop and the corresponding one group of regulating valve of compressor in the refrigeration compressor set per compressor realizes that height is arbitrarily downgraded
Changeable flow adjustment.
When summer to cool down two-stage compression cycle refrigerating operaton among two-step throttle completely, the first valve, the second valve,
Third valve and the 4th valve are opened, and the first interface of the first four-way reversing valve is connected with second interface, the commutation of the first four-way
The third interface of valve is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface, and the two or four
The second interface of logical reversal valve is connected with third interface, and the first interface of third four-way reversing valve is connected with the 4th interface,
The second interface of third four-way reversing valve is connected with third interface；Close to the pressure of the refrigeration compressor set second exhaust interface
As high pressure stage compressor, the compressor close to the refrigeration compressor set first exhaust interface compresses contracting machine as low-pressure stage
Machine；The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, the suction end of low-pressure stage compressor interconnects,
Exhaust end is interconnected, and is not connected mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；It is high
Second exhaust interface through the refrigeration compressor set, the 4th valve, the commutation of third four-way after compressor of arbitrarily downgrading compresses working medium
Valve, which enters in the outdoor unit, to be condensed, and condensed working medium enters described after the first four-way reversing valve, first throttle valve throttling
Evaporation endothermic in intercooler presses through the degree of superheat of heat steam in reduction, the working medium after evaporation is divided after the third valve
For two-way, mix, pass through with the superheated vapor that the intercooler comes out through first valve, the first four-way reversing valve all the way
The third four-way reversing valve returns to the second air-breathing interface of the refrigeration compressor set, and another way is through the second throttle section
Enter the indoor unit after stream to evaporate, generate refrigeration phenomenon, the working medium after evaporation is pressed again through second four-way reversing valve, refrigeration
First air-breathing interface of contracting unit enters the low-pressure stage compressor of the refrigeration compressor set；Meanwhile low-pressure stage compressor is by work
Enter heat release in the intercooler through second valve, the second four-way reversing valve after matter compression, reduce the degree of superheat, heat release
Working medium afterwards returns to the refrigeration by the third four-way reversing valve after being mixed with the working medium of first four-way reversing valve and presses
Second air-breathing interface of contracting unit；By controlling the start and stop of every compressor and compressor in the refrigeration compressor set corresponding
Changeable flow adjustment of just arbitrarily downgrading is realized in the keying of one group of regulating valve.
When being run in winter with single stage compress circulation heating, the regulating valve in the refrigeration compressor set is fully open, the
One valve and the second valve are opened, and third valve and the 4th valve are closed, the first interface of first four-way reversing valve and the
Four interfaces are connected, and the second interface of first four-way reversing valve is connected with third interface, second four-way reversing valve
First interface be connected with second interface, the third interface of second four-way reversing valve is connected with the 4th interface, described
The third interface of third four-way reversing valve is connected with the 4th interface, second interface and the first interface phase of third four-way reversing valve
Connection；The first exhaust interface through the refrigeration compressor set, the second valve, the second four-way reversing valve enter institute after working medium compression
It states in indoor unit and condenses, generate heating phenomenon, condensed working medium is changed through the second throttle, the first valve, the first four-way
The entrance outdoor unit evaporation to valve, absorbs amount of heat, then through the third four-way reversing valve, the refrigeration compressor set
The second air-breathing interface return to the refrigeration compressor set, complete single-stage heating cycle；By controlling the refrigeration compressor set
The operation quantity of middle compressor realizes energy adjustment.
When in winter not exclusively to cool down two-stage compression cycle heating operation among two-step throttle, first electric valve closes
It closes, second valve, third valve and the 4th valve are opened；The first interface and second interface of first four-way reversing valve
It is connected, the third interface of the first four-way reversing valve is connected with the 4th interface, the first interface of the second four-way reversing valve and
Four interfaces are connected, and the second interface of the second four-way reversing valve is connected with third interface, and the first of third four-way reversing valve connects
Mouth is connected with second interface, and the third interface of third four-way reversing valve is connected with the 4th interface；Close to the refrigerant compression
The compressor of unit first exhaust interface is as high pressure stage compressor, close to the pressure of the refrigeration compressor set second exhaust interface
Contracting machine is as low-pressure stage compressor；The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, low-pressure stage compressor
Suction end interconnect, exhaust end is interconnected, between low-pressure stage compressor and the exhaust end of high pressure stage compressor and air-breathing
It is not connected mutually between end；First exhaust interface through the refrigeration compressor set, second after high pressure stage compressor compresses working medium
Valve, the second four-way reversing valve, which enter in the indoor unit, to be condensed, and generates heating phenomenon, condensed working medium is through the described second section
Valve, third valve are flowed into the intercooler evaporation endothermic, the degree of superheat of heat steam are pressed through in reduction, later, working medium passes through
The first throttle valve, the first four-way reversing valve, which enter in the outdoor unit, to be evaporated, and absorbs amount of heat, the working medium after evaporation is again
The second air-breathing interface through the third four-way reversing valve, refrigeration compressor set enters the suction end of the low-pressure stage compressor,
Complete hiigh pressure stage cycle；Meanwhile low-pressure stage compressor working medium is compressed after through the 4th valve, third four-way reversing valve enter described in
Heat release in intercooler reduces the degree of superheat, then the first air-breathing interface through second four-way reversing valve, refrigeration compressor set
The high pressure stage compressor suction end of the refrigeration compressor set is returned to, completes low-pressure stage cycle；By controlling the refrigerant compression
Changeable flow adjustment of just arbitrarily downgrading is realized in the keying of start and stop and the corresponding one group of regulating valve of compressor in unit per compressor.
In winter among two-step throttle completely cooling two-stage compression cycle heating operation when, the first valve, the second valve,
Third valve and the 4th valve are opened, and the first interface of the first four-way reversing valve is connected with second interface, the commutation of the first four-way
The third interface of valve is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface, and the two or four
The second interface of logical reversal valve is connected with third interface, and the first interface of third four-way reversing valve is connected with second interface,
The third interface of third four-way reversing valve is connected with the 4th interface, close to the pressure of the refrigeration compressor set first exhaust interface
As high pressure stage compressor, the compressor close to the refrigeration compressor set second exhaust interface compresses contracting machine as low-pressure stage
Machine；The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, the suction end of low-pressure stage compressor interconnects,
Exhaust end is interconnected, and is not connected mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；It is high
Described in the first exhaust interface through the refrigeration compressor set, the second four-way reversing valve enter after compressor of arbitrarily downgrading compresses working medium
It is condensed in indoor unit, generates heating phenomenon, condensed working medium divides two-way after second throttle throttling, and working medium passes through all the way
First valve enters first four-way reversing valve；Another way working medium enters the intercooler through the third valve
Evaporation endothermic presses through the temperature of heat steam in reduction, the working medium come out from the intercooler is through the first throttle valve two
Partial node stream is evaporated into the outdoor unit, absorbs amount of heat, then through the third four-way reversing valve, refrigeration compressor set the
Two air-breathing interfaces enter the suction end of low-pressure stage compressor.Low-pressure stage compressor working medium is compressed after through the 4th valve,
Three four-way reversing valves, which are calmed the anger in coming with first four-way reversing valve after liquid two-phase working substance mixes, enters the intercooler
In heat release again, until middle pressure steam becomes saturated vapor, then through second four-way reversing valve, the refrigeration compressor set the
One air-breathing interface returns to the high pressure stage compressor of the refrigeration compressor set；By controlling every pressure in the refrigeration compressor set
Changeable flow adjustment of just arbitrarily downgrading is realized in the start and stop of contracting machine and the keying of the corresponding one group of regulating valve of compressor.
Compressor in the refrigeration compressor set is screw compressor, rotor compressor, helical-lobe compressor and piston pressure
Any one of contracting machine.
The first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or orifice throttle fill
It puts
Compared with prior art, the beneficial effects of the invention are as follows：
1st, heat pump system of the invention can realize single-stage by the keying of regulating valve and the interface transformation of four-way reversing valve
Compression and the switching of Two-stage Compression, are easy to energy adjustment when as two-stage compression heat pump system, can realize that hiigh pressure stage is compressed
The mutual conversion of machine and low-pressure stage compressor improves the efficiency of heat pump system.It is used simultaneously in summer heat pump system as air-conditioning
When, whole compressors can come into operation, and improve cooling in summer amount, reduce the initial cost of system, reduce operating cost,
Reach energy-efficient purpose.
2nd, for unit of the invention when being run as single stage compress parallel connection heat pump system, refrigeration compressor can all pass through start and stop
Energy adjustment is realized in control.The unit of the present invention as two-stage compression heat pump system when running, the pressure in refrigeration compressor set
Contracting machine can be changed high by the open and close of one group of regulating valve of the suction end and exhaust end of start and stop and corresponding compressor
It arbitrarily downgrades the ratio between number of units and grade that puts into operation of refrigeration compressor and low-pressure stage refrigeration compressor, is convenient for energy tune between grade
Section, hiigh pressure stage refrigeration system and low-pressure stage refrigeration system working medium flow proportioning are rationally, it can be achieved that refrigeration and the small temperature of heat pump system
Poor undulated control is, it can be achieved that effective adjusting of cooling system amount or heating capacity.
3rd, the parallel connection of variable-flow single stage compress and two-stage compression heat pump system of the invention can realize that single stage compress refrigeration is followed
Not exclusively cooling two-stage compression refrigeration cycle, second throttle centre cooling two-stage compression refrigeration completely follow among ring, second throttle
Ring, single stage compress heat pump cycle, second throttle centre not exclusively cooling two-stage compression heat pump cycle, second throttle centre are complete cold
But two-stage compression heat pump recycles, and system switching is flexible, can be adapted for various working.
Description of the drawings
Fig. 1 show the structure diagram of the heat pump system of the achievable variable-flow single-stage circulation of the present invention and dual-stage servo system；
Fig. 2 show the structure diagram of refrigeration compressor set.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
The schematic diagram of the heat pump system of the achievable variable-flow single-stage circulation of the present invention and dual-stage servo system as shown in Figure 1, including
Refrigeration compressor set 1, the first four-way reversing valve 2-1, the second four-way reversing valve 2-2, third four-way reversing valve 2-3, cooling during rolling
Device 3, outdoor unit 5, indoor unit 6, first throttle valve 4-1, second throttle 4-2, the first valve 7-1, the second valve 7-2, third
Valve 7-3 and the 4th valve 7-4, the refrigeration compressor set 1 include multiple compressors 8, and the exhaust end of the compressor 8 is in parallel
Connection is divided into first exhaust interface 1-2 and second exhaust interface 1-3, and the suction end of the compressor, which is connected in parallel, is divided into the first suction
Gas interface 1-1 and the second air-breathing interface 1-4, between the exhaust end of the adjacent compressor 8 and the air-breathing of the adjacent compressor
Regulating valve 9 is respectively arranged between end.The regulating valve of same 8 corresponding exhaust end of compressor and suction end opens simultaneously or together
When close.The first exhaust interface 1-2 of the refrigeration compressor set 1 is changed by the second valve 7-2 and second four-way
It is connected to the 4th interface of valve 2-2, the first air-breathing interface 1-1 of the refrigeration compressor set and the second four-way reversing valve 2-
2 second interface connection, the second exhaust interface 1-3 of the refrigeration compressor set pass through the 4th valve 7-4 and described the
The second interface connection of three four-way reversing valve 2-3, the second air-breathing interface 1-4 and the third four-way of the refrigeration compressor set
The 4th interface connection of reversal valve 2-3.The of the first interface of the second four-way reversing valve 2-2 and the intercooler 3
Two interfaces connect, the third interface of the intercooler 3 respectively with the second interface of the first four-way reversing valve 2-1 and institute
The first interface connection of third four-way reversing valve 2-3 is stated, the first interface of the intercooler 3 passes through the third valve 7-
3 connect respectively with the second throttle 4-2 and first valve 7-1 one end, the other end of the first valve 7-1 and described the
The first interface connection of one four-way reversing valve 2-1, the third interface of the first four-way reversing valve 2-1 pass through the first throttle
Valve 4-1 is connect with the 4th interface of the intercooler 3, and the 4th interface of the first four-way reversing valve 2-1 passes through described
Outdoor unit 5 is connect with the third interface of the third four-way reversing valve 2-3；The other end of the second throttle 4-2 passes through institute
The third interface that indoor unit 6 is stated with the second four-way reversing valve 2-2 is connect.
The parallel connection of variable-flow single stage compress and the two-stage compression heat pump system of the present invention can realize single stage compress refrigeration cycle,
Incomplete cooling two-stage compression refrigeration recycles among second throttle, second throttle centre cools down two-stage compression refrigeration cycle completely,
Not exclusively cooling two-stage compression heat pump cycle, the cooling completely of second throttle centre among single stage compress heat pump cycle, second throttle
Two-stage compression heat pump recycles, and system switching is flexible.
When being run with single stage compress refrigeration cycle summer, the regulating valve 9 in the refrigeration compressor set 1 is fully open,
The first valve 7-1 and the 4th valve 7-4 is opened, and the second valve 7-2 and third valve 7-3 are closed, and the described 1st
The first interface of logical reversal valve 2-1 is connected with the 4th interface, second interface and the third interface phase of the first four-way reversing valve 2-1
Connection, the first interface of the second four-way reversing valve 2-2 are connected with the 4th interface, the second interface of the second four-way reversing valve 2-2
It is connected with third interface, the first interface of third four-way reversing valve 2-3 is connected with the 4th interface, third four-way reversing valve 2-
3 second interface is connected with third interface.Second exhaust interface 1-3 of the compressed working medium through the refrigeration compressor set 1,
4th valve 7-4, third four-way reversing valve 2-3, which enter in the outdoor unit 5, to be condensed, and condensed working medium is through first four-way
Enter the second throttle 4-2 after reversal valve 2-1, the first valve 7-1, the working medium after throttling, which enters in the indoor unit 6, steams
Hair, generates refrigeration phenomenon, and the working medium after evaporation returns to the first of the refrigeration compressor set through the second four-way reversing valve 2-2
Air-breathing interface 1-1 returns to the refrigeration compressor set.In operational process, by controlling compressor in the refrigeration compressor set 1
The quantity of operation can realize energy adjustment.
When summer is not exclusively to cool down two-stage compression cycle refrigerating operaton among two-step throttle, the first valve 7-1 is closed,
Second valve 7-2, third valve 7-3 and the 4th valve 7-4 are opened, and the first interface of the first four-way reversing valve 2-1 connects with second
Mouth is connected, and the third interface of the first four-way reversing valve 2-1 is connected with the 4th interface, and the first of the second four-way reversing valve 2-2
Interface is connected with the 4th interface, and the second interface of the second four-way reversing valve 2-2 is connected with third interface, the commutation of third four-way
The first interface of valve 2-3 is connected with the 4th interface, and the second interface of third four-way reversing valve 2-3 is connected with third interface.
Compressor close to the refrigeration compressor set second exhaust interface 1-3 is as high pressure stage compressor, close to the refrigerant compression
The compressor of unit first exhaust interface 1-2 is as low-pressure stage compressor.The suction end of high pressure stage compressor is interconnected, is vented
End is interconnected, and the suction end of low-pressure stage compressor interconnects, exhaust end is interconnected, low-pressure stage compressor and hiigh pressure stage pressure
It is not connected mutually between the exhaust end of contracting machine and between suction end.The adjusting of same 8 corresponding exhaust end of compressor and suction end
Valve is opened simultaneously or is simultaneously closed off.Second exhaust interface through the refrigeration compressor set after high pressure stage compressor compresses working medium
1-3, the 4th valve 7-4, third four-way reversing valve 2-3, which enter in the outdoor unit 5, to be condensed, and condensed working medium is through described first
Four-way reversing valve 2-1, first throttle valve 4-1 enter evaporation endothermic in the intercooler 3, and the mistake of heat steam is pressed through in reduction
Temperature, the working medium after evaporation are evaporated through the third valve 7-3, second throttle 4-2 into the indoor unit 6, generate refrigeration
Phenomenon, later first air-breathing interface 1-2 of the working medium through the second four-way reversing valve 2-2, refrigeration compressor set enter the system
The low-pressure stage compressor of cold compression unit 1.First row through the refrigeration compressor set after low-pressure stage compressor compresses working medium
Gas interface 1-2, the second valve 7-2, the second four-way reversing valve 2-2 enter heat release in the intercooler 3, reduce the degree of superheat,
Second air-breathing interface 1-4 of the working medium again through third four-way reversing valve 2-3, the refrigeration compressor set enters the refrigeration and presses later
The high pressure stage compressor of contracting unit 1 is completed not exclusively to cool down two-stage compression cycle among two-step throttle.By controlling the refrigeration
The quantity realization energy of compressor operating has grade adjusting in compressor set.By controlling same compression in refrigeration compressor set
The start and stop of machine 8 and compressor and the regulating valve of corresponding exhaust end and suction end, which are opened simultaneously or simultaneously closed off, can adjust high pressure
The operation quantity of grade compressor and low-pressure stage compressor, so as to adjust the flow system flow that height is arbitrarily downgraded.
When summer to cool down two-stage compression cycle refrigerating operaton among two-step throttle completely, the first valve 7-1, the second valve
Door 7-2, third valve 7-3 and the 4th valve 7-4 are opened, and the first interface of the first four-way reversing valve 2-1 is connected with second interface
Logical, the third interface of the first four-way reversing valve 2-1 is connected with the 4th interface, the first interface of the second four-way reversing valve 2-2 and
4th interface is connected, and the second interface of the second four-way reversing valve 2-2 is connected with third interface, third four-way reversing valve 2-3
First interface be connected with the 4th interface, the second interface of third four-way reversing valve 2-3 is connected with third interface.Close to institute
The compressor of refrigeration compressor set second exhaust interface 1-3 is stated as high pressure stage compressor, close to the refrigeration compressor set the
The compressor of one exhaust port 1-2 is as low-pressure stage compressor.The suction end of high pressure stage compressor is interconnected, exhaust end is mutual
Connection, the suction end of low-pressure stage compressor interconnects, exhaust end is interconnected, low-pressure stage compressor and high pressure stage compressor
It is not connected mutually between exhaust end and between suction end.High pressure stage compressor working medium is compressed after through the refrigeration compressor set
Two exhaust port 1-3, the 4th valve 7-4, third four-way reversing valve 2-3, which enter in the outdoor unit 5, to be condensed, condensed working medium
Enter evaporation endothermic in the intercooler 3 after the first four-way reversing valve 2-1, first throttle valve 4-1 throttling, pressed in reduction
The degree of superheat of superheated vapor, the working medium after evaporation is divided into two-way after the third valve 7-3, all the way through the first valve 7-
1st, the first four-way reversing valve 2-1 is mixed with the superheated vapor that the intercooler 3 comes out, through the third four-way reversing valve 2-
3 return to the second air-breathing interface 1-4 of the refrigeration compressor set.Another way enters institute after second throttle 4-2 throttlings
It states indoor unit 6 to evaporate, generates refrigeration phenomenon, the working medium after evaporation is again through the second four-way reversing valve 2-2, refrigeration compressor set
The first air-breathing interface 1-1 enter the refrigeration compressor set low-pressure stage compressor.Meanwhile low-pressure stage compressor is by working medium pressure
Enter heat release in the intercooler 3 through the second valve 7-2, the second four-way reversing valve 2-2 after contracting, reduce the degree of superheat,
Working medium after heat release is returned to after being mixed with the working medium of the first four-way reversing valve 2-1 by the third four-way reversing valve 2-3
Second air-breathing interface 1-4 of the refrigeration compressor set.By control in refrigeration compressor set the start and stop of same compressor 8 and
Compressor and the regulating valve of corresponding exhaust end and suction end open simultaneously or simultaneously close off can adjust high pressure stage compressor with
The operation quantity of low-pressure stage compressor, so as to adjust the flow system flow that height is arbitrarily downgraded.
When being run in winter with single stage compress circulation heating, the regulating valve 9 in the refrigeration compressor set 1 is fully open,
First valve 7-1 and the second valve 7-2 is opened, and third valve 7-3 and the 4th valve 7-4 are closed, first four-way reversing valve
The first interface of 2-1 is connected with the 4th interface, and the second interface of the first four-way reversing valve 2-1 is connected with third interface
Logical, the first interface of the second four-way reversing valve 2-2 is connected with second interface, and the of the second four-way reversing valve 2-2
Three interfaces are connected with the 4th interface, and the third interface of the third four-way reversing valve 2-3 is connected with the 4th interface, and the three or four
The second interface of logical reversal valve 2-3 is connected with first interface.First exhaust through the refrigeration compressor set after working medium compression
Interface 1-2, the second valve 7-2, the second four-way reversing valve 2-2, which enter in the indoor unit 6, to be condensed, and generates heating phenomenon, condensation
Working medium afterwards is evaporated through the second throttle 4-2, the first valve 7-1, the first four-way reversing valve 2-1 into the outdoor unit 5,
Amount of heat is absorbed, then the second air-breathing interface 1-4 through the third four-way reversing valve 2-3, the refrigeration compressor set is returned to
The refrigeration compressor set completes single-stage heating cycle.It is realized by the start and stop for controlling compressor in the refrigeration compressor set
Energy adjustment.
When in winter not exclusively to cool down two-stage compression cycle heating operation among two-step throttle, the first valve 7-1
It closes, the second valve 7-2, third valve 7-3 and the 4th valve 7-4 are opened；The first of the first four-way reversing valve 2-1
Interface is connected with second interface, and the third interface of the first four-way reversing valve 2-1 is connected with the 4th interface, the commutation of the second four-way
The first interface of valve 2-2 is connected with the 4th interface, and the second interface of the second four-way reversing valve 2-2 is connected with third interface,
The first interface of third four-way reversing valve 2-3 is connected with second interface, the third interface and the 4th of third four-way reversing valve 2-3
Interface is connected.Compressor close to the refrigeration compressor set first exhaust interface 1-2 is as high pressure stage compressor, close to institute
The compressor of refrigeration compressor set second exhaust interface 1-3 is stated as low-pressure stage compressor.The suction end phase of high pressure stage compressor
Intercommunicated, exhaust end is interconnected, and the suction end of low-pressure stage compressor interconnects, exhaust end is interconnected, low-pressure stage compression
It is not connected mutually between machine and the exhaust end of high pressure stage compressor and between suction end.High pressure stage compressor working medium is compressed after through institute
The first exhaust interface 1-2, the second valve 7-2, the second four-way reversing valve 2-2 for stating refrigeration compressor set enter the indoor unit 6
Middle condensation, generates heating phenomenon, and condensed working medium is cold into the centre through the second throttle 4-2, third valve 7-3
But 3 evaporation endothermic of device presses through the degree of superheat of heat steam in reduction, later, working medium is through the first throttle valve 4-1, the first four-way
Reversal valve 2-1, which enters in the outdoor unit 5, to be evaporated, and absorbs amount of heat, the working medium after evaporation commutates again through the third four-way
Valve 2-3, refrigeration compressor set the second air-breathing interface 1-4 enter the low-pressure stage compressor suction end, complete hiigh pressure stage follow
Ring.Meanwhile low-pressure stage compressor working medium is compressed after through the 4th valve 7-4, third four-way reversing valve 2-3 enter the centre it is cold
But heat release in device 3 reduces the degree of superheat, then the first air-breathing interface 1- through the second four-way reversing valve 2-2, refrigeration compressor set
1 returns to the high pressure stage compressor suction end of the refrigeration compressor set, completes low-pressure stage cycle.By controlling refrigeration compressor set
In same compressor 8 start and stop and compressor and the regulating valve of corresponding exhaust end and suction end open simultaneously or simultaneously close off
The operation quantity of high pressure stage compressor and low-pressure stage compressor can be adjusted, so as to adjust the flow system flow that height is arbitrarily downgraded.
When in winter to cool down two-stage compression cycle heating operation among two-step throttle completely, the first valve 7-1, the second valve
Door 7-2, third valve 7-3 and the 4th valve 7-4 are opened, and the first interface of the first four-way reversing valve 2-1 is connected with second interface
Logical, the third interface of the first four-way reversing valve 2-1 is connected with the 4th interface, the first interface of the second four-way reversing valve 2-2 and
4th interface is connected, and the second interface of the second four-way reversing valve 2-2 is connected with third interface, third four-way reversing valve 2-3
First interface be connected with second interface, the third interface of third four-way reversing valve 2-3 is connected with the 4th interface.Close to institute
The compressor of refrigeration compressor set first exhaust interface 1-2 is stated as high pressure stage compressor, close to the refrigeration compressor set the
The compressor of two exhaust port 1-3 is as low-pressure stage compressor.The suction end of high pressure stage compressor is interconnected, exhaust end is mutual
Connection, the suction end of low-pressure stage compressor interconnects, exhaust end is interconnected, low-pressure stage compressor and high pressure stage compressor
It is not connected mutually between exhaust end and between suction end.High pressure stage compressor working medium is compressed after through the refrigeration compressor set
One exhaust port 1-2, the second four-way reversing valve 2-2, which enter in the indoor unit 6, to be condensed, and generates heating phenomenon, condensed work
Matter divides two-way after second throttle 4-2 throttlings, and working medium is changed through the first valve 7-1 into first four-way all the way
To valve 2-1；Another way working medium enters 3 evaporation endothermic of intercooler through the third valve 7-3, and hot steaming is pressed through in reduction
The temperature of gas enters the outdoor unit from the working medium that the intercooler 3 comes out through the first throttle valve 4-1 second throttles
5 evaporation, absorb amount of heat, then through the third four-way reversing valve 2-3, refrigeration compressor set the second air-breathing interface 1-4 into
Enter the suction end of low-pressure stage compressor.Low-pressure stage compressor commutates after working medium is compressed through the 4th valve 7-4, third four-way
Valve 2-3, which is calmed the anger in coming with the first four-way reversing valve 2-1 after liquid two-phase working substance mixes, to be entered in the intercooler 3 again
Secondary heat release, until middle pressure steam becomes saturated vapor, then through the second four-way reversing valve 2-2, the refrigeration compressor set the
One air-breathing interface 1-1 returns to the high pressure stage compressor of the refrigeration compressor set.By controlling in refrigeration compressor set same
The start and stop of compressor 8 and compressor and the regulating valve of corresponding exhaust end and suction end are opened simultaneously or are simultaneously closed off and can adjust
The operation quantity of high pressure stage compressor and low-pressure stage compressor, so as to adjust the flow system flow that height is arbitrarily downgraded.
In the present invention, the compressor in the refrigeration compressor set is screw compressor, rotor compressor, helical-lobe compressor
Any one of with piston compressor.
The first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or orifice throttle fill
It puts.
It, can in refrigeration compressor set in the achievable variable-flow single stage compress parallel connection of the present invention and two-stage compression heat pump system
With by the action of four-way reversing valve variable-flow single stage compress parallel connection refrigeration system and variable-flow double-stage compressive refrigerating system it
Between switch, switch between variable-flow single stage compress parallel connection heat pump system and variable-flow two-stage compression heat pump system, and can pass through
The action of valve not exclusively cools down completely cold among double-stage compressive refrigerating system and second throttle among variable-flow second throttle
But switch between double-stage compressive refrigerating system, and can be incomplete among variable-flow second throttle by the action of the first valve
Switch between complete cooling two-stage compression heat pump system among cooling two-stage compression heat pump system and second throttle.In variable-flow list
In grade compression parallel system, the electrodeless adjustment of energy is realized by the start and stop number of units for controlling compressor in refrigeration compressor set.
In Two-stage Compression system, by controlling the start and stop of compressor and controlling to adjust opening and the closing of solenoid valve in groups, it can realize
The changes in flow rate for system of just arbitrarily downgrading, interstage matched.
The achievable variable-flow single stage compress parallel connection of the present invention and two-stage compression heat pump system are in specific use, refrigeration pressure
Contracting machine can be partly or entirely using frequency refrigeration compressor be determined, to reduce investment.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. the heat pump system of a kind of achievable variable-flow single-stage circulation and dual-stage servo system, which is characterized in that including refrigeration compressor
Group, the first four-way reversing valve, the second four-way reversing valve, third four-way reversing valve, intercooler, outdoor unit, indoor unit, first
Throttle valve, second throttle, the first valve, the second valve, third valve and the 4th valve；The first of the refrigeration compressor set
Exhaust port is connect by second valve with the 4th interface of second four-way reversing valve, the refrigeration compressor set
First air-breathing interface is connect with the second interface of second four-way reversing valve, the second exhaust interface of the refrigeration compressor set
It is connect by the 4th valve with the second interface of the third four-way reversing valve, the second air-breathing of the refrigeration compressor set
Interface is connect with the 4th interface of the third four-way reversing valve；The first interface of second four-way reversing valve and the centre
The second interface connection of cooler, the third interface of the intercooler connect respectively with the second of first four-way reversing valve
Mouth is connected with the first interface of the third four-way reversing valve, and the first interface of the intercooler passes through the third valve
It is connect respectively with the second throttle and first valve one end, the other end of first valve commutates with first four-way
The first interface connection of valve, the third interface of first four-way reversing valve pass through the first throttle valve and the cooling during rolling
The 4th interface connection of device, the 4th interface of first four-way reversing valve are commutated by the outdoor unit and the third four-way
The third interface connection of valve；The other end of the second throttle pass through the indoor unit and second four-way reversing valve the
Three interfaces connect.
2. the heat pump system of achievable variable-flow single-stage circulation according to claim 1 and dual-stage servo system, which is characterized in that
The refrigeration compressor set includes multiple compressors, and the exhaust end of the compressor, which is connected in parallel, is divided into first exhaust interface and the
Two exhaust ports, the suction end of the compressor, which is connected in parallel, is divided into the first air-breathing interface and the second air-breathing interface, adjacent described
Regulating valve is respectively arranged between the exhaust end of compressor and between the suction end of the adjacent compressor.
3. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When being run with single stage compress refrigeration cycle summer, the regulating valve in the refrigeration compressor set is fully open, first valve
Door and the 4th valve are opened, and second valve and third valve are closed, the first interface of first four-way reversing valve and the
Four interfaces are connected, and the second interface of the first four-way reversing valve is connected with third interface, and the first of the second four-way reversing valve connects
Mouth is connected with the 4th interface, and the second interface of the second four-way reversing valve is connected with third interface, third four-way reversing valve
First interface is connected with the 4th interface, and the second interface of third four-way reversing valve is connected with third interface；Compressed work
Second exhaust interface of the matter through the refrigeration compressor set, the 4th valve, third four-way reversing valve enter cold in the outdoor unit
Solidifying, condensed working medium enters the second throttle, the working medium after throttling after first four-way reversing valve, the first valve
It is evaporated into the indoor unit, generates refrigeration phenomenon, the working medium after evaporation returns to the system through second four-way reversing valve
First air-breathing interface of cold compression unit returns to the refrigeration compressor set；By controlling compressor in the refrigeration compressor set
The quantity of operation realizes energy adjustment.
4. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When summer is not exclusively to cool down two-stage compression cycle refrigerating operaton among two-step throttle, the first valve is closed, the second valve, the
Three valves and the 4th valve are opened, and the first interface of the first four-way reversing valve is connected with second interface, the first four-way reversing valve
Third interface be connected with the 4th interface, the first interface of the second four-way reversing valve is connected with the 4th interface, the second four-way
The second interface of reversal valve is connected with third interface, and the first interface of third four-way reversing valve is connected with the 4th interface, the
The second interface of three four-way reversing valves is connected with third interface；Close to the compression of the refrigeration compressor set second exhaust interface
Machine is as high pressure stage compressor, and the compressor close to the refrigeration compressor set first exhaust interface is as low-pressure stage compressor；
The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, and the suction end of low-pressure stage compressor is interconnected, is vented
End is interconnected, and is not connected mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；Hiigh pressure stage
Second exhaust interface through the refrigeration compressor set after compressor compresses working medium, the 4th valve, third four-way reversing valve into
Enter and condensed in the outdoor unit, condensed working medium is cold into the centre through first four-way reversing valve, first throttle valve
But evaporation endothermic in device presses through the degree of superheat of heat steam in reduction, the working medium after evaporation is through the third valve, second throttle
Evaporated into the indoor unit, generate refrigeration phenomenon, later working medium through second four-way reversing valve, refrigeration compressor set the
One air-breathing interface enters the low-pressure stage compressor of the refrigeration compressor set；Low-pressure stage compressor working medium is compressed after through the system
First exhaust interface, the second valve, the second four-way reversing valve of cold compression unit enter heat release in the intercooler, reduce
The degree of superheat, later second air-breathing interface of the working medium again through third four-way reversing valve, the refrigeration compressor set enter the refrigeration
The high pressure stage compressor of compressor set is completed not exclusively to cool down two-stage compression cycle among two-step throttle；By controlling the system
Variable-flow of just arbitrarily downgrading is realized in the keying of start and stop and the corresponding one group of regulating valve of compressor in cold compression unit per compressor
It adjusts.
5. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When summer to cool down two-stage compression cycle refrigerating operaton among two-step throttle completely, the first valve, the second valve, third valve
It is opened with the 4th valve, the first interface of the first four-way reversing valve is connected with second interface, the third of the first four-way reversing valve
Interface is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface, the second four-way reversing valve
Second interface be connected with third interface, the first interface of third four-way reversing valve is connected with the 4th interface, third four-way
The second interface of reversal valve is connected with third interface；Close to the compressor conduct of the refrigeration compressor set second exhaust interface
High pressure stage compressor, the compressor close to the refrigeration compressor set first exhaust interface is as low-pressure stage compressor；Hiigh pressure stage
The suction end of compressor is interconnected, exhaust end is interconnected, and the suction end of low-pressure stage compressor interconnects, exhaust end is mutual
Connection, does not connect mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；High pressure stage compressor
Described in the second exhaust interface through the refrigeration compressor set, the 4th valve, third four-way reversing valve enter after working medium is compressed
It is condensed in outdoor unit, condensed working medium enters the intercooler after the first four-way reversing valve, first throttle valve throttling
Middle evaporation endothermic presses through the degree of superheat of heat steam in reduction, the working medium after evaporation is divided into two-way after the third valve, all the way
It is mixed through first valve, the first four-way reversing valve with the superheated vapor that the intercooler comes out, through the described 3rd 4
Logical reversal valve returns to the second air-breathing interface of the refrigeration compressor set, and another way enters institute after second throttle throttling
State indoor unit evaporation, generate refrigeration phenomenon, working medium after evaporation again through second four-way reversing valve, refrigeration compressor set the
One air-breathing interface enters the low-pressure stage compressor of the refrigeration compressor set；Meanwhile low-pressure stage compressor working medium is compressed after pass through
Second valve, the second four-way reversing valve enter heat release in the intercooler, reduce the degree of superheat, working medium after heat release with
The of the refrigeration compressor set is returned to by the third four-way reversing valve after the working medium mixing of first four-way reversing valve
Two air-breathing interfaces；By controlling in the refrigeration compressor set per the start and stop of compressor and the corresponding one group of regulating valve of compressor
Keying realize that height is arbitrarily downgraded changeable flow adjustment.
6. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When being run in winter with single stage compress circulation heating, the regulating valve in the refrigeration compressor set is fully open, the first valve and
Second valve is opened, and third valve and the 4th valve are closed, first interface and the 4th interface phase of first four-way reversing valve
Connection, the second interface of first four-way reversing valve are connected with third interface, and the first of second four-way reversing valve connects
Mouth is connected with second interface, and the third interface of second four-way reversing valve is connected with the 4th interface, the third four-way
The third interface of reversal valve is connected with the 4th interface, and the second interface of third four-way reversing valve is connected with first interface；Work
The first exhaust interface through the refrigeration compressor set, the second valve, the second four-way reversing valve enter the interior after matter compression
It is condensed in machine, generates heating phenomenon, condensed working medium is through the second throttle, the first valve, first four-way reversing valve
Into the outdoor unit evaporate, absorb amount of heat, then through the third four-way reversing valve, the refrigeration compressor set second
Air-breathing interface returns to the refrigeration compressor set, completes single-stage heating cycle；It is compressed by controlling in the refrigeration compressor set
The operation quantity of machine realizes energy adjustment.
7. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When in winter not exclusively to cool down two-stage compression cycle heating operation among two-step throttle, first electric valve is closed, described
Second valve, third valve and the 4th valve are opened；The first interface of first four-way reversing valve is connected with second interface,
The third interface of first four-way reversing valve is connected with the 4th interface, the first interface of the second four-way reversing valve and the 4th interface phase
Connection, the second interface of the second four-way reversing valve are connected with third interface, the first interface of third four-way reversing valve and second
Interface is connected, and the third interface of third four-way reversing valve is connected with the 4th interface；Close to the refrigeration compressor set first
The compressor of exhaust port is as high pressure stage compressor, close to the compressor conduct of the refrigeration compressor set second exhaust interface
Low-pressure stage compressor；The suction end of high pressure stage compressor is interconnected, exhaust end is interconnected, the suction end of low-pressure stage compressor
Interconnect, exhaust end is interconnected, between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end mutually
It does not connect；First exhaust interface through the refrigeration compressor set, the second valve, second after high pressure stage compressor compresses working medium
Four-way reversing valve, which enters in the indoor unit, to be condensed, and generates heating phenomenon, condensed working medium is through the second throttle, third
Valve enters the intercooler evaporation endothermic, the degree of superheat of heat steam is pressed through in reduction, later, working medium is through the first segment
Stream valve, the first four-way reversing valve, which enter in the outdoor unit, to be evaporated, and absorbs amount of heat, the working medium after evaporation is again through the third
Four-way reversing valve, refrigeration compressor set the second air-breathing interface enter the low-pressure stage compressor suction end, complete hiigh pressure stage
Cycle；Meanwhile low-pressure stage compressor working medium is compressed after through the 4th valve, third four-way reversing valve enter the intercooler
Middle heat release reduces the degree of superheat, then the first air-breathing interface through second four-way reversing valve, refrigeration compressor set returns to the system
The high pressure stage compressor suction end of cold compression unit completes low-pressure stage cycle；By controlling in the refrigeration compressor set every
Changeable flow adjustment of just arbitrarily downgrading is realized in the start and stop of compressor and the keying of the corresponding one group of regulating valve of compressor.
8. the heat pump system of achievable variable-flow single-stage circulation according to claim 2 and dual-stage servo system, which is characterized in that
When in winter to cool down two-stage compression cycle heating operation among two-step throttle completely, the first valve, the second valve, third valve
It is opened with the 4th valve, the first interface of the first four-way reversing valve is connected with second interface, the third of the first four-way reversing valve
Interface is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface, the second four-way reversing valve
Second interface be connected with third interface, the first interface of third four-way reversing valve is connected with second interface, third four-way
The third interface of reversal valve is connected with the 4th interface, close to the compressor conduct of the refrigeration compressor set first exhaust interface
High pressure stage compressor, the compressor close to the refrigeration compressor set second exhaust interface is as low-pressure stage compressor；Hiigh pressure stage
The suction end of compressor is interconnected, exhaust end is interconnected, and the suction end of low-pressure stage compressor interconnects, exhaust end is mutual
Connection, does not connect mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；High pressure stage compressor
The first exhaust interface through the refrigeration compressor set, the second four-way reversing valve enter cold in the indoor unit after working medium is compressed
It is solidifying, heating phenomenon is generated, condensed working medium divides two-way after second throttle throttling, and working medium is through first valve all the way
Door enters first four-way reversing valve；Another way working medium enters the intercooler evaporation endothermic through the third valve,
The temperature of heat steam is pressed through in reduction, the working medium come out from the intercooler enters through the first throttle valve second throttle
The outdoor unit evaporation, absorbs amount of heat, then the second air-breathing interface through the third four-way reversing valve, refrigeration compressor set
Into the suction end of low-pressure stage compressor.Low-pressure stage compressor commutates after working medium is compressed through the 4th valve, third four-way
Valve, which is calmed the anger in coming with first four-way reversing valve after liquid two-phase working substance mixes, enters heat release again in the intercooler,
Become saturated vapor, then the first air-breathing interface through second four-way reversing valve, the refrigeration compressor set to middle pressure steam
Return to the high pressure stage compressor of the refrigeration compressor set；By controlling the start and stop in the refrigeration compressor set per compressor
And changeable flow adjustment of just arbitrarily downgrading is realized in the keying of the corresponding one group of regulating valve of compressor.
9. the heat pump system of achievable variable-flow single-stage circulation according to claim 1 or 2 and dual-stage servo system, feature exist
In the compressor in the refrigeration compressor set is in screw compressor, rotor compressor, helical-lobe compressor and piston compressor
It is any.
10. the heat pump system of achievable variable-flow single-stage circulation according to claim 1 or 2 and dual-stage servo system, feature
It is, the first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or throttle orifice plate apparatus.
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| CN108716785A (en) * | 2018-07-20 | 2018-10-30 | 天津商业大学 | The intermediate completely cooling refrigeration system of primary throttling with medium temperature evaporator |
| CN108716785B (en) * | 2018-07-20 | 2023-09-26 | 天津商业大学 | Primary throttling intermediate full cooling refrigeration system with intermediate temperature evaporator |
| CN112546751A (en) * | 2020-02-26 | 2021-03-26 | 高锦 | Energy-saving and environment-friendly high-rise building haze continuous treatment and purification device |
| CN112546751B (en) * | 2020-02-26 | 2022-07-19 | 苏州维格纳信息科技有限公司 | Energy-saving and environment-friendly high-rise building haze continuous treatment and purification device |
| CN113776219A (en) * | 2021-08-20 | 2021-12-10 | 清华大学 | Air source heat pump, air conditioner and control method suitable for severe cold area |
| CN113776219B (en) * | 2021-08-20 | 2022-09-13 | 清华大学 | Air source heat pump, air conditioner and control method suitable for severe cold area |
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