CN208222905U - 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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- CN208222905U CN208222905U CN201820385323.0U CN201820385323U CN208222905U CN 208222905 U CN208222905 U CN 208222905U CN 201820385323 U CN201820385323 U CN 201820385323U CN 208222905 U CN208222905 U CN 208222905U
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Abstract
The utility model discloses the heat pump systems of a kind of achievable variable-flow single-stage circulation and 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 opening and closing 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 utility model relates to refrigeration technology fields, and more specifically, it relates to a kind of achievable variable-flow single-stage is in parallel
The heat pump system of circulation and dual-stage servo system.
Background technique
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 mention
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 is than being 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 and hiigh pressure stage pressure of system
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 uses converter technique that can guarantee suitably to compress when
Suitable cylinder ratio, but higher cost and compressed format are fixed, when summer cooling, for two-stage compression heat pump system
Speech, if according to can satisfy -25 DEG C of outdoor temperature space heating loads needs design, in other words these area air-sources
Heat pump is arranged based on winter thermic load, and hiigh pressure stage and low-pressure stage compressor cannot use simultaneously when summer cooling, meeting when operation
There is more than half compressor idle, operating cost is high, and system initial cost is big.
Utility model content
The purpose of this utility model is to be directed to technological deficiency existing in the prior art, and providing one kind can be according to refrigeration
Amount needs to carry out single stage compress circulation and switches with two-stage compression cycle, and refrigerant flow is adjustable, can reduce user's operating cost
With the heat pump system of initial cost.
It is for technical solution used by realization the purpose of this utility model:
A kind of heat pump system 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 connection, the third interface of the intercooler respectively with the second interface of first four-way reversing valve and described
The first interface of third four-way reversing valve connects, 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 first of the other end of first valve and first four-way reversing valve
The third interface of interface connection, first four-way reversing valve passes through the first throttle valve and the 4th of the intercooler the
Interface connection, the third that the 4th interface of first four-way reversing valve passes through the outdoor unit and the third four-way reversing valve
Interface connection；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 summer is with the operation of single stage compress refrigeration cycle, 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, fourth valve, third four-way reversing valve of the working medium through the refrigeration compressor set 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 operation realizes energy adjustment.
When summer is with not exclusively cooling 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 to mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；
Second exhaust interface, the 4th valve, third four-way through the refrigeration compressor set 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, and 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 compressing working medium
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, not exclusively cooling two-stage compression cycle among two-step throttle is completed；Pass through control
The start and stop of every compressor and the opening and closing of the corresponding one group of regulating valve of compressor realize that height is arbitrarily downgraded in the refrigeration compressor set
Changeable flow adjustment.
When summer is with cooling two-stage compression cycle refrigerating operaton completely among two-step throttle, 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 to 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, the 4th valve, the commutation of third four-way through the refrigeration compressor set 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, and the working medium after evaporation is after the third valve point
For two-way, mixes, 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 through second four-way reversing valve, refrigeration again
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, reduces the degree of superheat, heat release
Working medium afterwards returns to the refrigeration by the third four-way reversing valve after mixing with the working medium of first four-way reversing valve and presses
Second air-breathing interface of contracting unit；It is corresponding by controlling the start and stop of every compressor and compressor in the refrigeration compressor set
Changeable flow adjustment of just arbitrarily downgrading is realized in the opening and closing of one group of regulating valve.
When in winter with the operation of 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；First exhaust interface, the second valve, the second four-way reversing valve through the refrigeration compressor set 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
To evaporating into the outdoor unit for valve, amount of heat is absorbed, 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 circulation；By controlling the refrigeration compressor set
The operation quantity of middle compressor realizes energy adjustment.
In winter with when incomplete cooling two-stage compression cycle heating operation, first electric valve is closed among two-step throttle
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 to 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 second section
Stream valve, third valve enter the intercooler evaporation endothermic, and the degree of superheat of heat steam is pressed through in reduction, later, working medium warp
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 circulation；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, low-pressure stage circulation is completed；By controlling the refrigerant compression
Changeable flow adjustment of just arbitrarily downgrading is realized in the start and stop of every compressor and the opening and closing of the corresponding one group of regulating valve of compressor in unit.
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 to mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；It is high
Described in first exhaust interface, the second four-way reversing valve through the refrigeration compressor set 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, and 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,
It is calmed the anger after liquid two-phase working substance mixes during three four-way reversing valves are next with first four-way reversing valve and 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
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 opening and closing 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 dress
It sets
Compared with prior art, the utility model has the beneficial effects that
1, the heat pump system of the utility model can be realized by the opening and closing of regulating valve and the interface transformation of four-way reversing valve
The switching of single stage compress and Two-stage Compression is easy to energy adjustment when as two-stage compression heat pump system, can be realized hiigh pressure stage
The mutual conversion of compressor and low-pressure stage compressor, improves the efficiency of heat pump system.Simultaneously in summer heat pump system as air-conditioning
In use, whole compressors can come into operation, cooling in summer amount is improved, the initial cost of system is reduced, reduces operation
Cost reaches energy-efficient purpose.
2, when as the operation of single stage compress parallel connection heat pump system, refrigeration compressor can all pass through the unit of the utility model
Start-up and shut-down control realizes energy adjustment.The unit of the utility model as two-stage compression heat pump system when running, refrigeration compressor
Compressor in group can unlatching by one group of regulating valve of the suction end and exhaust end of start and stop and corresponding compressor and pass
The ratio between number of units and grade that puts into operation for changing hiigh pressure stage refrigeration compressor and low-pressure stage refrigeration compressor is closed, is convenient between grade
Energy adjustment, hiigh pressure stage refrigeration system and low-pressure stage refrigeration system working medium flow proportion are rationally, it can be achieved that refrigeration and heat pump system
Small temperature difference undulated control, it can be achieved that cooling system amount or heating capacity effective adjusting.
3, single stage compress system may be implemented in the variable-flow single stage compress parallel connection of the utility model and two-stage compression heat pump system
Not exclusively cooling two-stage compression refrigeration circulation, the completely cooling Two-stage Compression system in second throttle centre among SAPMAC method, second throttle
It is complete among the not exclusively cooling two-stage compression heat pump circulation in SAPMAC method, single stage compress heat pump cycle, second throttle centre, second throttle
Complete cooling two-stage compression heat pump circulation, system switching flexibly, can be adapted for various working.
Detailed description of the invention
Fig. 1 show the structural representation that the utility model can realize the heat pump system of variable-flow single-stage circulation and dual-stage servo system
Figure；
Fig. 2 show the structural schematic diagram of refrigeration compressor set.
Specific embodiment
The utility model is described in detail below in conjunction with specific embodiment.
The utility model can realize the schematic diagram of the heat pump system of variable-flow single-stage circulation 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, centre
Cooler 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, the exhaust end of the compressor 8
It is connected in parallel and is divided into first exhaust interface 1-2 and second exhaust interface 1-3, the suction end of the compressor, which is connected in parallel, is divided into
One air-breathing interface 1-1 and the second air-breathing interface 1-4, between the exhaust end of the adjacent compressor 8 and the adjacent compressor
Regulating valve 9 is respectively arranged between suction end.The regulating valve of the corresponding exhaust end of same compressor 8 and suction end opens simultaneously
Or it simultaneously closes off.The first exhaust interface 1-2 of the refrigeration compressor set 1 passes through the second valve 7-2 and the described 2nd 4
The 4th interface connection of logical reversal valve 2-2, the first air-breathing interface 1-1 and second four-way of the refrigeration compressor set commutate
The second interface of valve 2-2 connects, and the second exhaust interface 1-3 of the refrigeration compressor set passes through the 4th valve 7-4 and institute
State the second interface connection of third four-way reversing valve 2-3, the second air-breathing interface 1-4 of the refrigeration compressor set and the third
The 4th interface of four-way reversing valve 2-3 connects.The first interface and the intercooler 3 of the second four-way reversing valve 2-2
Second interface connection, the third interface of the intercooler 3 second interface with the first four-way reversing valve 2-1 respectively
It is connected with the first interface of the third four-way reversing valve 2-3, the first interface of the intercooler 3 passes through the third valve
Door 7-3 is connect with the second throttle 4-2 and first one end valve 7-1 respectively, the other end of the first valve 7-1 and institute
The first interface connection of the first four-way reversing valve 2-1 is stated, the third interface of the first four-way reversing valve 2-1 passes through described 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
The 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 is logical
The indoor unit 6 is crossed to connect with the third interface of the second four-way reversing valve 2-2.
Single stage compress refrigeration may be implemented in the variable-flow single stage compress parallel connection of the utility model and two-stage compression heat pump system
Complete cooling two-stage compression refrigeration among the not exclusively cooling two-stage compression refrigeration circulation in circulation, second throttle centre, second throttle
It is complete among the not exclusively cooling two-stage compression heat pump circulation in circulation, single stage compress heat pump cycle, second throttle centre, second throttle
Cooling two-stage compression heat pump circulation, system switching are flexible.
When summer is with the operation of single stage compress refrigeration cycle, 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
Energy adjustment may be implemented in the quantity of operation.
When summer is with not exclusively cooling 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 to mutually between the exhaust end of contracting machine and between suction end.The adjusting of same compressor 8 corresponding exhaust end 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, and refrigeration is generated
Phenomenon, working medium enters the system through the first air-breathing interface 1-2 of the second four-way reversing valve 2-2, refrigeration compressor set later
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 is pressed into the refrigeration later
The high pressure stage compressor of contracting unit 1 completes not exclusively cooling two-stage compression cycle among two-step throttle.By controlling the refrigeration
The quantity realization energy that compressor is run in compressor set has grade adjusting.Pass through same compression in control refrigeration compressor set
The regulating valve of the start and stop of machine 8 and compressor and corresponding exhaust end and suction end opens simultaneously or simultaneously closes off adjustable high pressure
The operation quantity of grade compressor and low-pressure stage compressor, to adjust the flow system flow that height is arbitrarily downgraded.
When summer is with cooling two-stage compression cycle refrigerating operaton completely among two-step throttle, 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 to 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, is 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-
1, 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 throttling
The evaporation of indoor unit 6 is stated, 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 mixing 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 refrigeration compressor set in same compressor 8 start and stop and
The regulating valve of compressor and corresponding exhaust end and suction end open simultaneously or simultaneously close off adjustable high pressure stage compressor with
The operation quantity of low-pressure stage compressor, to adjust the flow system flow that height is arbitrarily downgraded.
When in winter with the operation of 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 heating phenomenon, condensation are generated
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 circulation.Start and stop by controlling compressor in the refrigeration compressor set are realized
Energy adjustment.
When in winter with cooling two-stage compression cycle heating operation incomplete 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 to 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, and 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 through the third four-way again
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 circulation.By controlling refrigeration compressor set
In the start and stop of same compressor 8 and the regulating valve of compressor and corresponding exhaust end and suction end open simultaneously or simultaneously close off
The operation quantity of adjustable high pressure stage compressor and low-pressure stage compressor, to adjust the flow system flow that height is arbitrarily downgraded.
When in winter with cooling two-stage compression cycle heating operation complete among two-step throttle, 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 to 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 heating phenomenon, condensed work are generated
Matter divides two-way after second throttle 4-2 throttling, and working medium enters first four-way through the first valve 7-1 and changes all the way
To valve 2-1；Another way working medium enters 3 evaporation endothermic of intercooler through the third valve 7-3, presses through hot steaming in reduction
The temperature of gas, the working medium come out from the intercooler 3 enter the outdoor unit through the first throttle valve 4-1 second throttle
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 compressing working medium through the 4th valve 7-4, third four-way
It calms the anger after liquid two-phase working substance mixes and enters in the intercooler 3 again during valve 2-3 is next with the first four-way reversing valve 2-1
Secondary heat release, until middle pressure steam becomes saturated vapor, then through the second four-way reversing valve 2-2, the refrigeration compressor set
One air-breathing interface 1-1 returns to the high pressure stage compressor of the refrigeration compressor set.Pass through same in control refrigeration compressor set
The regulating valve of the start and stop of compressor 8 and compressor and corresponding exhaust end and suction end opens simultaneously or simultaneously closes off adjustable
The operation quantity of high pressure stage compressor and low-pressure stage compressor, to adjust the flow system flow that height is arbitrarily downgraded.
In the utility model, the compressor in the refrigeration compressor set is screw compressor, rotor compressor, screw rod pressure
Any one of contracting machine and piston compressor.
The first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or orifice throttle dress
It sets.
In the achievable variable-flow single stage compress parallel connection of the utility model and two-stage compression heat pump system, refrigeration compressor set
In can be by the movement of four-way reversing valve in variable-flow single stage compress parallel connection refrigeration system and variable-flow two-stage compression refrigeration system
Switch between system, switch between variable-flow single stage compress parallel connection heat pump system and variable-flow two-stage compression heat pump system, and can be with
It is not exclusively cooled down among variable-flow second throttle by the movement of valve complete among double-stage compressive refrigerating system and second throttle
Switch between complete cooling double-stage compressive refrigerating system, but can by the movement of the first valve among variable-flow second throttle not
Switch between completely cooling two-stage compression heat pump system among completely cooling two-stage compression heat pump system and second throttle.In unsteady flow
It measures in single stage compress parallel system, the electrodeless tune of energy is realized by the start and stop number of units of compressor in control refrigeration compressor set
Section.It, can be with by controlling the start and stop of compressor and in groups controlling to adjust the on and off of solenoid valve in Two-stage Compression system
Realize the changes in flow rate for system of just arbitrarily downgrading, interstage matched.
The achievable variable-flow single stage compress of the utility model is in parallel and two-stage compression heat pump system is in specific use, system
Cold compressor can be partly or entirely using frequency refrigeration compressor be determined, to reduce investment.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (10)
1. a kind of heat pump system 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 of cooler connects, and the third interface of the intercooler connects with the second of first four-way reversing valve respectively
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 and first four-way commutate
The first interface of valve connects, and the third interface of first four-way reversing valve passes through the first throttle valve and the cooling during rolling
4th interface of device connects, and the 4th interface of first four-way reversing valve is commutated by the outdoor unit and the third four-way
The third interface of valve connects；The other end of the second throttle pass through the indoor unit and second four-way reversing valve the
The connection of three interfaces.
2. the heat pump system of achievable variable-flow single-stage circulation and dual-stage servo system according to claim 1, 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
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 and dual-stage servo system according to claim 2, which is characterized in that
When summer is with the operation of single stage compress refrigeration cycle, 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, fourth valve, third four-way reversing valve of the matter through the refrigeration compressor set 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
Into evaporating in the indoor unit, refrigeration phenomenon is generated, 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 and dual-stage servo system according to claim 2, which is characterized in that
When summer is with not exclusively cooling 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 to 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, and 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, second air-breathing interface of the working medium again through third four-way reversing valve, the refrigeration compressor set enters the refrigeration later
The high pressure stage compressor of compressor set completes not exclusively cooling two-stage compression cycle among two-step throttle；By controlling the system
Variable-flow of just arbitrarily downgrading is realized in the start and stop of every compressor and the opening and closing of the corresponding one group of regulating valve of compressor in cold compression unit
It adjusts.
5. the heat pump system of achievable variable-flow single-stage circulation and dual-stage servo system according to claim 2, which is characterized in that
When summer is with cooling two-stage compression cycle refrigerating operaton completely among two-step throttle, 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, is not connected to 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 second exhaust interface, the 4th valve, third four-way reversing valve after working medium is compressed through the refrigeration compressor set enter
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, and 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 the start and stop and the corresponding one group of regulating valve of compressor that control every compressor in the refrigeration compressor set
Opening and closing realize that height is arbitrarily downgraded changeable flow adjustment.
6. the heat pump system of achievable variable-flow single-stage circulation and dual-stage servo system according to claim 2, which is characterized in that
When in winter with the operation of 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
First exhaust interface, the second valve, the second four-way reversing valve after matter compression through the refrigeration compressor set enter the interior
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 circulation；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 and dual-stage servo system according to claim 2, which is characterized in that
In winter among two-step throttle not exclusively cooling two-stage compression cycle heating operation when, first valve is closed, described the
Two valves, third valve and the 4th valve are opened；The first interface of first four-way reversing valve is connected with second interface, the
The third interface of one four-way reversing valve is connected with the 4th interface, and the first interface of the second four-way reversing valve is connected with the 4th interface
Logical, the second interface of the second four-way reversing valve is connected with third interface, and the first interface of third four-way reversing valve connects with second
Mouth 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 row
The compressor of gas interface is as high pressure stage compressor, and the compressor close to the refrigeration compressor set second exhaust interface is as low
It arbitrarily downgrades 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 mutual
Be connected, exhaust end is interconnected, between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end mutually not
Connection；First exhaust interface, the second valve, the two or four through the refrigeration compressor set after high pressure stage compressor compresses working medium
Logical reversal valve, which enters in the indoor unit, to be condensed, and generates heating phenomenon, condensed working medium is through the second throttle, third valve
Door enters the intercooler evaporation endothermic, the degree of superheat of heat steam is pressed through in reduction, later, working medium is 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 through the described 3rd 4
Logical reversal valve, refrigeration compressor set the second air-breathing interface enter the suction end of the low-pressure stage compressor, complete hiigh pressure stage and follow
Ring；Meanwhile low-pressure stage compressor working medium is compressed after through the 4th valve, third four-way reversing valve enter the intercooler in
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 refrigeration
The high pressure stage compressor suction end of compressor set completes low-pressure stage circulation；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 opening and closing of the corresponding one group of regulating valve of compressor.
8. the heat pump system of achievable variable-flow single-stage circulation and dual-stage servo system according to claim 2, which is characterized in that
When in winter with cooling two-stage compression cycle heating operation complete among two-step throttle, 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, is not connected to mutually between low-pressure stage compressor and the exhaust end of high pressure stage compressor and between suction end；High pressure stage compressor
First exhaust interface, the second four-way reversing valve after working medium is compressed through the refrigeration compressor set enter cold in the indoor unit
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 that heat steam is pressed through in reduction, the working medium come out from the intercooler enter 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 compressing working medium through the 4th valve, third four-way
It is calmed the anger after liquid two-phase working substance mixes during valve is next with first four-way reversing valve and enters heat release again in the intercooler,
Become saturated vapor to middle pressure steam, then the first air-breathing interface through second four-way reversing valve, the refrigeration compressor set
Return to the high pressure stage compressor of the refrigeration compressor set；By the start and stop for controlling every compressor in the refrigeration compressor set
And changeable flow adjustment of just arbitrarily downgrading is realized in the opening and closing of the corresponding one group of regulating valve of compressor.
9. the heat pump system of achievable variable-flow single-stage circulation and dual-stage servo system according to claim 1 or 2, 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 and dual-stage servo system according to claim 1 or 2, feature
It is, the first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or throttle orifice plate apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385323.0U CN208222905U (en) | 2018-03-21 | 2018-03-21 | The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385323.0U CN208222905U (en) | 2018-03-21 | 2018-03-21 | The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253654A (en) * | 2018-03-21 | 2018-07-06 | 天津商业大学 | The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253654A (en) * | 2018-03-21 | 2018-07-06 | 天津商业大学 | The heat pump system of variable-flow single-stage circulation and dual-stage servo system can be achieved |
| CN108253654B (en) * | 2018-03-21 | 2024-03-26 | 天津商业大学 | Heat pump system capable of realizing variable flow single-stage circulation and double-stage circulation |
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