CN109945549A - A kind of ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source - Google Patents
A kind of ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source Download PDFInfo
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- CN109945549A CN109945549A CN201910208679.6A CN201910208679A CN109945549A CN 109945549 A CN109945549 A CN 109945549A CN 201910208679 A CN201910208679 A CN 201910208679A CN 109945549 A CN109945549 A CN 109945549A
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Abstract
The invention discloses a kind of ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source, the unit includes quasi- second level (twin-stage) compressor, four-way reversing valve, indoor heat exchanger, main road economizer, main road electric expansion valve, outdoor heat exchanger, gas-liquid separator, bypass electric expansion valve, water cooling evaporator, low-temperature solar energy heat collector, water pump, first check valve, capillary, second one-way valve, first solenoid valve, second solenoid valve, third solenoid valve, 4th solenoid valve, 5th solenoid valve, 6th solenoid valve, 7th solenoid valve, major loop (heating/refrigerating operaton), defrost loop, tonifying Qi loop and sustainable heat source loop.On the one hand the unit under tonifying Qi operating condition, can use the refrigerant in the hot water heating tonifying Qi loop of solar thermal collector production, be allowed to gasify.On the other hand, under defrosting operating condition, unit four-way reversing valve does not commutate, indoors persistently heat supply when defrosted using the hot water of solar energy production.
Description
Technical field
The present invention relates to a kind of quasi- second level of second vapor injection type (twin-stage) compressed air source hot pump systems, and in particular to Yi Zhongzhong
Between tonifying Qi utilize external sustainable heat source ultra-low-loop temperature solar-net for air-source heat pump units.
Background technique
The second vapor injection form of the existing quasi- second level of second vapor injection type (twin-stage) compressed air source hot pump system mainly has band to pass through
Ji device crosses cold mould and with two kinds of form of flash evaporation flash distillation type, the refrigerant vapour of the former tonifying Qi by condensator outlet high temperature/
Pressure liquid refrigerant further heats generation, and liquid phase separation generates after the latter is then throttled by the first order.Both tonifying Qi forms
Because heat consumed by tonifying Qi is both from system itself.In addition, the quasi- second level of second vapor injection type (twin-stage) compressed air source hot pump
The defrosting form of system mostly uses reverse cycle defrosting and hot gas bypass defrosting, and system is unable to duration heat supply, unrestrained to a certain extent
Take the heat needed for part is heated, heating season performance factor is caused to decline, weakens the confession of second vapor injection type air source heat pump
Warm economy.
Summary of the invention
In order to solve the above problem existing for the existing quasi- second level of second vapor injection type (twin-stage) compressed air source hot pump system, this
Invention provides ultra-low-loop temperature solar-net for air-source heat pump units that a kind of second vapor injection utilizes external sustainable heat source.The machine
On the one hand group under tonifying Qi operating condition, can use the refrigerant in the hot water heating tonifying Qi loop of solar thermal collector production, make
Gasification.At this point, system is equivalent to heat that evaporator is absorbed from environment and tonifying Qi from solar energy from the heat that the external world absorbs
The sum of heat absorbed in hot water, when compressor operating state is constant, the heating capacity of unit theoretically can be improved 32% even
It is higher.On the other hand, under defrosting operating condition, unit four-way reversing valve does not commutate, indoors persistently heat supply when it is raw using solar energy
The hot water of production defrosts.It can guarantee the sustainable heating requirement of unit at low ambient temperatures at this time, to improve unit
Coefficient of performance in heating.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source, including quasi- second level (twin-stage) compressor,
Four-way reversing valve, indoor heat exchanger, economizer, main road electric expansion valve, outdoor heat exchanger, gas-liquid separator, bypass electronics are swollen
Swollen valve, water cooling evaporator, low-temperature solar energy heat collector, water pump, the first check valve, capillary, second one-way valve, the first electromagnetism
Valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, major loop,
Defrost loop, tonifying Qi loop and sustainable heat source loop, in which:
The first solenoid valve and second solenoid valve are provided on the major loop；
It is unidirectional that the first solenoid valve, third solenoid valve, the 4th solenoid valve, the 7th solenoid valve and first are provided on the defrosting loop
Valve；
The air compensation ring road is provided with the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve and second one-way valve；
The tonifying Qi pipeline is connect with the gas supplementing opening of quasi- second level (twin-stage) compressor；
The exhaust outlet of quasi- second level (twin-stage) compressor and a of four-way reversing valve are exported and are connected；
One end of the outlet b the connection one threeway A, threeway A of the four-way reversing valve pass through the first solenoid valve and indoor heat exchanger
The other end of connection, threeway A is connect by third solenoid valve and threeway C with outdoor heat exchanger；
The outlet c of the four-way reversing valve is connected by the air entry of gas-liquid separator and compressor；
One end of the outlet d the connection one threeway B, threeway B of the four-way reversing valve pass through second solenoid valve and threeway C and outdoor
The other end of heat exchanger connection, threeway B is connect by the 7th solenoid valve with threeway G；
The indoor heat exchanger is located on major loop/defrosting loop, and entrance is commutated by the first solenoid valve and threeway A and four-way
The b of valve exports connection, one threeway D of outlet connection, and one end of threeway D is connect with the economizer being located on major loop, threeway D
The other end connect with water cooling evaporator by bypass electric expansion valve, threeway E, the 4th solenoid valve and threeway F；
The economizer is located at major loop/air compensation ring road, and the major loop entrance of economizer connects a threeway D, and the one of threeway D
It holds and is connect with the indoor heat exchanger being located on major loop, the other end of threeway D passes through bypass electric expansion valve, threeway E, the 4th electricity
Magnet valve and threeway F are connect with water cooling evaporator；The main ring way outlet of economizer passes through main road electric expansion valve and threeway I and outdoor
Heat exchanger connection；The tonifying Qi loop head of economizer is connect by the 5th solenoid valve with threeway E；The air compensation ring way outlet of economizer
A threeway H is connected by second one-way valve, one end of threeway H passes through the benefit of the 6th solenoid valve and quasi- second level (twin-stage) compressor
The other end of port connection, threeway H is connected with the 7th solenoid valve and water cooling evaporator respectively by threeway G；
The main road electric expansion valve is located on major loop, and entrance is connect with the economizer on major loop, outlet connection one
A threeway I, the outdoor heat exchanger connection on one end and major loop of threeway I, the other end of threeway I pass through the first check valve and hair
Tubule connection；
The outdoor heat exchanger is located on major loop/defrosting loop, and both ends are connect with a threeway C and a threeway I respectively,
Wherein one end of threeway C is exported by the d of second solenoid valve and threeway B and four-way reversing valve and is connected, and the other end of threeway C passes through
The outlet the b of third solenoid valve and threeway A and four-way reversing valve connection；One end of threeway I passes through main road electric expansion valve and economy
The other end of device connection, threeway I is connect by the first check valve with capillary；
The capillary is located on defrosting loop, and the entrance of capillary is connect with the outlet of the first check valve；The outlet of capillary
A threeway F is connected, one end of threeway F is connect with the entrance of water cooling evaporator, and the other end of threeway F and the 4th solenoid valve connect
It connects；
The bypass electric expansion valve is located at air compensation ring road, and entrance connects a threeway D, and one end and the interior of threeway D is changed
The outlet of hot device connects, and the other end of threeway D and the major loop entrance of economizer connect；It exports one threeway E of connection, threeway
One end of E connects the 4th solenoid valve, and the other end of threeway E is connected by the tonifying Qi entrance of the 5th solenoid valve and economizer；
The water cooling evaporator is located on tonifying Qi loop/defrosting loop/sustainable heat source loop, and water cooling evaporator is located at air compensation ring
Road/defrosting loop entrance connects a threeway F, and one end of threeway F is connect with the 4th solenoid valve, the other end and hair of threeway F
Tubule connection；Water cooling evaporator is located at the outlet of tonifying Qi loop/defrosting loop and connects a threeway G, and one end of threeway G passes through three
Logical H is connect with the 6th solenoid valve, and the other end of threeway G is connect with the 7th solenoid valve；Water cooling evaporator is located at sustainable heat source ring
The entrance on road is connect with low-temperature solar energy heat collector；The outlet that water cooling evaporator is located at sustainable heat source is connect with water pump；
The low-temperature solar energy heat collector is located on sustainable heat source loop, and one end and water cooling evaporator are located at sustainable heat source ring
The entrance of road connects, and the other end is connect with water pump；
The water pump is located on sustainable heat source loop, and one end and water cooling evaporator are located at the company of the outlet on sustainable heat source loop
It connects, the other end is connect with low-temperature solar energy heat collector.
Compared with the prior art, the present invention has the advantage that
1, second vapor injection of the invention can be with the winter using ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source
Summer is dual-purpose, switches freely when winter heating under three kinds of operating modes, machine can be improved in most time efficient operations in unit
The heating season energy efficiency coefficient of group.
2, second vapor injection of the invention is mended using ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source
When gas operating condition, bypass tonifying Qi both individually can use the heat that solar thermal collector prepares hot water, be used to heating and gasifying compressor
Tonifying Qi, the heating capacity of Lai Tigao unit, and economizer gasification bypass refrigerant can be carried with Unit erriger, meet ultralow environment temperature
Spend the thermal load demands in lower room.
3, second vapor injection of the invention is removed using ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source
Under white mode, the heat of hot water is prepared using solar thermal collector, and indoor lasting heat supply Defrost operation may be implemented.
Detailed description of the invention
Fig. 1 is ultra-low-loop temperature solar-net for air-source heat pump units that second vapor injection of the present invention utilizes external sustainable heat source
Structural schematic diagram, in figure: the quasi- second level of 1- (twin-stage) compressor；2- four-way reversing valve；3- indoor heat exchanger；4- economizer；5-
Main road electric expansion valve；6- outdoor heat exchanger；7- gas-liquid separator；8- bypass electric expansion valve；9- water cooling evaporator；10- is low
Temperature solar heat collector；11- water pump；The first check valve of 12-；13- capillary；14- second one-way valve；The first solenoid valve of EV1-；
EV2- second solenoid valve；EV3- third solenoid valve；The 4th solenoid valve of EV4-；The 5th solenoid valve of EV5-；The 6th solenoid valve of EV6-；
The 7th solenoid valve of EV7-.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawing, and however, it is not limited to this, all to this
Inventive technique scheme is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be covered
Within the protection scope of the present invention.
The present invention provides ultra-low-loop temperature solar-air source heat pumps that a kind of second vapor injection utilizes external sustainable heat source
Unit, as shown in Figure 1, the unit includes quasi- second level (twin-stage) compressor 1, four-way reversing valve 2, indoor heat exchanger 3, economizer
4, main road electric expansion valve 5, outdoor heat exchanger 6, gas-liquid separator 7, bypass electric expansion valve 8, water cooling evaporator 9, low temperature is too
Positive energy heat collector 10, water pump 11, the first check valve 12, capillary 13, second one-way valve 14, the first solenoid valve EV1, the second electromagnetism
Valve EV2, third solenoid valve EV3, the 4th solenoid valve EV4, the 5th solenoid valve EV5, the 6th solenoid valve EV6, the 7th solenoid valve EV7,
Major loop (heating/refrigerating operaton), defrosting loop, tonifying Qi loop and sustainable heat source loop, in which:
The first solenoid valve EV1 and second solenoid valve EV2 is provided on the major loop；
The first solenoid valve EV1, third solenoid valve EV3, the 4th solenoid valve EV4, the 7th solenoid valve are provided on the defrosting loop
EV7 and the first check valve 12；
The air compensation ring road is provided with the 4th solenoid valve EV4, the 5th solenoid valve EV5, the 6th solenoid valve EV6 and second one-way valve
14；
The tonifying Qi pipeline is connect with the gas supplementing opening of quasi- second level (twin-stage) compressor 1；
The exhaust outlet of quasi- second level (twin-stage) compressor 1 and a of four-way reversing valve 2 are exported and are connected；
One threeway A of the outlet b connection of the four-way reversing valve 2, one end of threeway A is changed by the first solenoid valve EV1 with interior
Hot device 3 connects, and the other end of threeway A is connect by third solenoid valve EV3 and threeway C with outdoor heat exchanger 6；
The outlet c of the four-way reversing valve 2 is connect by gas-liquid separator 7 with the air entry of compressor 1；
One threeway B of the outlet d connection of the four-way reversing valve 2, one end of threeway B by second solenoid valve EV2 and threeway C with
Outdoor heat exchanger 6 connects, and the other end of threeway B is connect by the 7th solenoid valve EV7 with threeway G；
The indoor heat exchanger 3 is located on major loop/defrosting loop, and entrance passes through the first solenoid valve EV1 and threeway A and four-way
The b of reversal valve 2 exports connection, one threeway D of outlet connection, and one end of threeway D is connect with the economizer being located on major loop,
The other end of threeway D is connect by bypass electric expansion valve 8, threeway E, the 4th solenoid valve EV4 and threeway F with water cooling evaporator 9；
The economizer 4 is located at major loop/air compensation ring road, and the major loop entrance of economizer 4 connects a threeway D, threeway D's
One end connect with the indoor heat exchanger 3 being located on major loop, and the other end of threeway D passes through bypass electric expansion valve 8, threeway E, the
Four solenoid valve EV4 and threeway F are connect with water cooling evaporator 9；The main ring way outlet of economizer 4 passes through 5 He of main road electric expansion valve
Threeway I is connect with outdoor heat exchanger 6；The tonifying Qi loop head of economizer 4 is connect by the 5th solenoid valve EV5 with threeway E；It is economical
The air compensation ring way outlet of device 4 connects a threeway H by second one-way valve 14, one end of threeway H by the 6th solenoid valve EV6 with
The gas supplementing opening of quasi- second level (twin-stage) compressor 1 connects, the other end of threeway H by threeway G respectively with the 7th solenoid valve EV7 and water
Cold evaporator 9 is connected；
The main road electric expansion valve 5 is located on major loop, and entrance is connect with the economizer 4 on major loop, outlet connection
One threeway I, the outdoor heat exchanger 6 on one end and major loop of threeway I connect, and the other end of threeway I passes through the first check valve
12 connect with capillary 13；
The outdoor heat exchanger 6 is located on major loop/defrosting loop, and both ends connect with a threeway C and a threeway I respectively
It connects, wherein one end of threeway C is exported by the d of second solenoid valve EV2 and threeway B and four-way reversing valve 2 and connected, and threeway C's is another
One end is exported by the b of third solenoid valve EV3 and threeway A and four-way reversing valve 2 and is connected；One end of threeway I passes through main road electronics
Expansion valve 5 is connect with economizer 4, and the other end of threeway I is connect by the first check valve 12 with capillary 13；
The capillary 13 is located on defrosting loop, and the entrance of capillary is connect with the outlet of the first check valve 12；Capillary
One threeway F of outlet connection, one end of threeway F are connect with the entrance of water cooling evaporator 9, the other end of threeway F and the 4th electromagnetism
Valve EV4 connection；
The bypass electric expansion valve 8 is located at air compensation ring road, and entrance connects a threeway D, and one end and the interior of threeway D is changed
The outlet of hot device 3 connects, and the other end of threeway D is connect with the major loop entrance of economizer 4；It, which is exported, connects a threeway E, and three
One end of logical E connects the 4th solenoid valve EV4, and the other end of threeway E passes through the tonifying Qi entrance of the 5th solenoid valve EV5 and economizer 4
Connection；
The water cooling evaporator 9 is located on tonifying Qi loop/defrosting loop/sustainable heat source loop, and water cooling evaporator 9 is located at tonifying Qi
Loop/defrosting loop entrance connects a threeway F, and one end of threeway F is connect with the 4th solenoid valve EV4, the other end of threeway F
It is connect with capillary 13；Water cooling evaporator 9 be located at the outlet of tonifying Qi loop/defrosting loop connect a threeway G, the one of threeway G
End is connect by threeway H with the 6th solenoid valve EV6, and the other end of threeway G is connect with the 7th solenoid valve EV7；Water cooling evaporator 9
It is connect in the entrance of sustainable heat source loop with low-temperature solar energy heat collector 10；Water cooling evaporator 9 is located at going out for sustainable heat source
Mouth is connect with water pump 11；
The low-temperature solar energy heat collector 10 is located on sustainable heat source loop, and one end and water cooling evaporator 9 are located at sustainable heat
Entrance connection on the loop of source, the other end are connect with water pump 11；
The water pump is located on sustainable heat source loop, and one end and water cooling evaporator 9 are located at the outlet on sustainable heat source loop
Connection, the other end are connect with low-temperature solar energy heat collector 10.
In the present invention, the threeway A of the outlet four-way reversing valve b connection is located at the first solenoid valve EV1 and third solenoid valve
It is the first design element for realizing major loop and the loop switching that defrosts between EV3.
In the present invention, the threeway B of the outlet the d connection of the four-way reversing valve 2 is located at second solenoid valve EV2 and the 7th electromagnetism
It is the second design element for realizing major loop and the loop switching that defrosts between valve EV7.
In the present invention, 6 both ends of outdoor heat exchanger are connect with a threeway C and a threeway I respectively, wherein threeway C
It is to realize that major loop and the third design for the loop switching that defrosts are wanted between second solenoid valve EV2 and third solenoid valve EV3
Element；Threeway I is located between main road electric expansion valve 5 and the first check valve 12, is to realize major loop and defrost the of loop switching
Four design elements.
In the present invention, the entrance of the bypass electric expansion valve 8 connects a threeway D, and threeway D is located at indoor heat exchanger 3
It is the design element for realizing major loop and tonifying Qi loop parallel between economizer 4；The outlet of bypass electric expansion valve 8 connects
One threeway E, threeway E are to realize two kinds of tonifying Qi loop parallels between the 4th solenoid valve EV4 and the 5th solenoid valve EV5
Design element.
In the present invention, the water cooling evaporator 9 is located on tonifying Qi loop/defrosting loop.When tonifying Qi operating condition, absorption is come from
The heat-collecting capacity of low-temperature solar energy heat collector makes refrigerant vapor enter quasi- second level (twin-stage) compressor gas supplementing opening, and effect is to mention
The heating capacity of high system；When defrosting operating condition, the heat-collecting capacity from low-temperature solar energy heat collector is absorbed, refrigerant vapor is entered
Quasi- second level (twin-stage) compressor air suction mouth functions as evaporator, guarantees that interior can normal heat supply.
Second vapor injection of the invention both may be used using ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source
To heat in winter, but can in cooling in summer, heating operation there are three types of operating mode, refrigerating operaton and conventional power unit without
Different, specific workflow is as follows:
(1) heating operation:
(1) room temperature operating condition (> 0 DEG C)
Compressor additional-air inlet is closed when normal heating operation, i.e. the 4th solenoid valve EV4, the 5th solenoid valve EV5 and the 6th electromagnetism
Valve EV6 is turned off, and third solenoid valve EV3 and the 7th solenoid valve EV7 is closed at this time.The refrigerant vapour of high temperature and pressure is by quasi- second level
The exhaust outlet of (twin-stage) compressor 1 is discharged, and the outlet a-b through four-way reversing valve 2 flows through the first solenoid valve EV1 and enters the room heat exchange
Device 3, the liquid refrigerant after being condensed flows through main road economizer 4(, and economizer does not work at this time) enter main road electric expansion valve 5
In, the refrigerant (two-phase) after throttling absorbs the heat of Cryogenic air in outdoor heat exchanger 6 and is changed into refrigerant vapour, phase
It is exported after the d-c for flowing through second solenoid valve EV2, four-way reversing valve 2, returns to quasi- second level (twin-stage) compressor 1 through gas-liquid separator 7
Air entry complete compression；So constitute a circulation.
Under defrosting mode, compressor additional-air inlet is closed, i.e., the 5th solenoid valve EV5 and the 6th solenoid valve EV6 are turned off, this
When second solenoid valve EV2 close.The refrigerant vapour of high temperature and pressure is discharged by the exhaust outlet of quasi- second level (twin-stage) compressor 1, warp
The outlet a-b of four-way reversing valve 2 is divided into two-way, enters 6 defrosting of outdoor heat exchanger, another way warp through third solenoid valve EV3 all the way
Solenoid valve EV1 enters the room heat exchanger 3 to indoor continuation heat supply, and the liquid refrigerant after being condensed enters bypass electric expansion valve
8 mix through the 4th solenoid valve EV4 with the refrigerant for flowing through outdoor heat exchanger 6, check valve 12 and capillary 13 in succession, flow through the sun
Can heat collector 10 generate the water-cooled evaporator 9 of hot water and absorb heat, gasify as refrigerant vapour, then flow through the 7th solenoid valve EV7,
The d-c of four-way reversing valve 2 is exported, and the air entry for returning to quasi- second level (twin-stage) compressor 1 through gas-liquid separator 7 completes compression；Such as
This constitutes indoor lasting heat supply defrosting circulation under room temperature operating condition.
(2) worst cold case (- 15~0 DEG C)
Compressor additional-air inlet is opened when normal heating operation, at this time the first solenoid valve EV1, second solenoid valve EV2, the 4th electromagnetism
Valve EV4 and the 6th solenoid valve EV6 are opened, and third solenoid valve EV3, the 5th solenoid valve EV5 and the 7th solenoid valve EV7 are closed.It is high
The refrigerant vapour of warm high pressure is discharged by the exhaust outlet of quasi- second level (twin-stage) compressor 1, the a-b outlet stream through four-way reversing valve 2
Heat exchanger 3 is entered the room through the first solenoid valve EV1, the liquid refrigerant after being condensed is divided into two-way, main road liquid refrigerant warp
Economizer does not work main road economizer 4(at this time) enter in main road electric expansion valve 5, the refrigerant (two-phase) after throttling is in outdoor
The heat of Cryogenic air is absorbed in heat exchanger 6 and is changed into refrigerant vapour, flows through second solenoid valve EV2, four-way commutation in succession
The d-c of valve 2 is exported, and completes one stage of compression through gas-liquid separator 7 and the air entry that returns to quasi- second level (twin-stage) compressor 1；Bypass
Liquid refrigerant is absorbed into water-cooled evaporator 9 and is prepared from solar thermal collector 10 after the throttling of bypass electric expansion valve 8
Gasification occurs for the heat of hot water to superheat state, and superheated refrigerant steam is directly returned through the 6th solenoid valve 6 and auxilairy air intake
Quasi- second level (twin-stage) compressor 1, motor cooling first, and mixed with the exhaust of one stage of compression, mixed refrigerant is by again
Quasi- second level (twin-stage) compressor 1 is discharged after compression；So constitute a circulation.In addition, defrosting mode is the same as of no help under room temperature operating condition
Operational mode when gas.
(3) ultralow-temperature operation conditions (≤- 15 DEG C)
Compressor additional-air inlet is opened when normal heating operation, at this time the first solenoid valve EV1, second solenoid valve EV2, the 4th electromagnetism
Valve EV4, the 5th solenoid valve EV5 and the 6th solenoid valve EV6 are opened, and third solenoid valve EV3 and the 7th solenoid valve EV7 are closed.It is high
The refrigerant vapour of warm high pressure is discharged by the exhaust outlet of quasi- second level (twin-stage) compressor 1, the a-b outlet stream through four-way reversing valve 2
Heat exchanger 3 is entered the room through the first solenoid valve EV1, the liquid refrigerant after being condensed is divided into two-way, the refrigerant warp on secondary ring road
The throttling of electric expansion valve 8 rear portion is another in succession through the 4th solenoid valve EV4 and the heat absorption of water-cooled evaporator 9 to superheat state
Part enters the heat absorption of main road economizer 4 to superheat state through the 5th solenoid valve EV5, and two bypass superheated refrigerant steam are in water-cooled
The outlet of evaporator 9 mixing；The refrigerant of major loop is further subcooled after flowing through main road economizer 4, through 5 section of main road electric expansion valve
Enter outdoor heat exchanger 6 after stream, the outlet d-c of second solenoid valve EV2, four-way reversing valve 2 is flowed through after phase transformation of absorbing heat in succession, through gas
Liquid/gas separator 7 and the air entry completion one stage of compression for returning to quasi- second level (twin-stage) compressor 1；Mixed superheated refrigerant steam
Quasi- second level (twin-stage) compressor is directly returned through the 6th solenoid valve 6 and auxilairy air intake, motor cooling first, and and one stage of compression
Exhaust mixing, quasi- second level (twin-stage) compressor 1 is discharged in mixed refrigerant after being re-compressed；So one is constituted to follow
Ring.Under ultralow-temperature operation conditions, unit is almost without frosting possibility, therefore without Defrost operation mode.
(2) refrigerating operaton
Compressor additional-air inlet is closed when refrigerating operaton, and the first solenoid valve EV1 and second solenoid valve EV2 is opened at this time, remaining electricity
Magnet valve is turned off.The refrigerant vapour of high temperature and pressure is discharged by the exhaust outlet of quasi- second level (twin-stage) compressor 1, through four-way reversing valve
2 outlet a-d flows through second solenoid valve EV2 and enters outdoor heat exchanger 6, and it is swollen that the liquid refrigerant after being condensed flows through main road electronics
Swollen valve 5 enters main road economizer 4(, and economizer does not work at this time), refrigerant (two-phase) after throttling 3 interior suction of heat exchanger indoors
It receives the heat of room air and is changed into refrigerant vapour, flow through the first solenoid valve EV1 in succession, the b-c of four-way reversing valve 2 goes out
Mouthful, quasi- second level (twin-stage) compressor air suction mouth, which is returned, through gas-liquid separator 7 completes compression；So constitute a circulation.
Claims (2)
1. a kind of ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source, it is characterised in that the unit packet
Include quasi- second level (twin-stage) compressor, four-way reversing valve, indoor heat exchanger, economizer, main road electric expansion valve, outdoor heat exchanger,
Gas-liquid separator, bypass electric expansion valve, water cooling evaporator, low-temperature solar energy heat collector, water pump, the first check valve, capillary,
Second one-way valve, the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve,
7th solenoid valve, major loop, defrosting loop, tonifying Qi loop and sustainable heat source loop, in which:
The first solenoid valve and second solenoid valve are provided on the major loop；
It is unidirectional that the first solenoid valve, third solenoid valve, the 4th solenoid valve, the 7th solenoid valve and first are provided on the defrosting loop
Valve；
The air compensation ring road is provided with the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve and second one-way valve；
The tonifying Qi pipeline is connect with the gas supplementing opening of quasi- second level (twin-stage) compressor；
The exhaust outlet of quasi- second level (twin-stage) compressor and a of four-way reversing valve are exported and are connected；
One end of the outlet b the connection one threeway A, threeway A of the four-way reversing valve pass through the first solenoid valve and indoor heat exchanger
The other end of connection, threeway A is connect by third solenoid valve and threeway C with outdoor heat exchanger；
The outlet c of the four-way reversing valve is connected by the air entry of gas-liquid separator and compressor；
One end of the outlet d the connection one threeway B, threeway B of the four-way reversing valve pass through second solenoid valve and threeway C and outdoor
The other end of heat exchanger connection, threeway B is connect by the 7th solenoid valve with threeway G；
The indoor heat exchanger is located on major loop/defrosting loop, and entrance is commutated by the first solenoid valve and threeway A and four-way
The b of valve exports connection, one threeway D of outlet connection, and one end of threeway D is connect with the economizer being located on major loop, threeway D
The other end connect with water cooling evaporator by bypass electric expansion valve, threeway E, the 4th solenoid valve and threeway F；
The economizer is located at major loop/air compensation ring road, and the major loop entrance of economizer connects a threeway D, economizer
Main ring way outlet is connect by main road electric expansion valve and threeway I with outdoor heat exchanger；The tonifying Qi loop head of economizer passes through
5th solenoid valve is connect with threeway E；The air compensation ring way outlet of economizer connects a threeway H by second one-way valve, threeway H's
One end is connect by the 6th solenoid valve with the gas supplementing opening of quasi- second level (twin-stage) compressor, and the other end of threeway H is distinguished by threeway G
It is connected with the 7th solenoid valve and water cooling evaporator；
The main road electric expansion valve is located on major loop, and entrance is connect with the economizer on major loop, outlet connection one
A threeway I, the outdoor heat exchanger connection on one end and major loop of threeway I, the other end of threeway I pass through the first check valve and hair
Tubule connection；
The outdoor heat exchanger is located on major loop/defrosting loop, and both ends are connect with a threeway C and a threeway I respectively,
Wherein one end of threeway C is exported by the d of second solenoid valve and threeway B and four-way reversing valve and is connected, and the other end of threeway C passes through
The outlet the b of third solenoid valve and threeway A and four-way reversing valve connection；
The capillary is located on defrosting loop, and the entrance of capillary is connect with the outlet of the first check valve；The outlet of capillary
A threeway F is connected, one end of threeway F is connect with the entrance of water cooling evaporator, and the other end of threeway F and the 4th solenoid valve connect
It connects；
The bypass electric expansion valve is located at air compensation ring road, and entrance connects a threeway D, and outlet connects a threeway E, and three
One end of logical E connects the 4th solenoid valve, and the other end of threeway E is connected by the tonifying Qi entrance of the 5th solenoid valve and economizer；
The water cooling evaporator is located on tonifying Qi loop/defrosting loop/sustainable heat source loop, and water cooling evaporator is located at air compensation ring
Road/defrosting loop entrance connects a threeway F, and water cooling evaporator is located at the outlet of tonifying Qi loop/defrosting loop and connects one
One end of threeway G, threeway G are connect by threeway H with the 6th solenoid valve, and the other end of threeway G is connect with the 7th solenoid valve；Water cooling
The entrance that evaporator is located at sustainable heat source loop is connect with low-temperature solar energy heat collector；Water cooling evaporator is located at sustainable heat source
Outlet connect with water pump；
The low-temperature solar energy heat collector is located on sustainable heat source loop, and one end and water cooling evaporator are located at sustainable heat source ring
The entrance of road connects, and the other end is connect with water pump；
The water pump is located on sustainable heat source loop, and one end and water cooling evaporator are located at the company of the outlet on sustainable heat source loop
It connects, the other end is connect with low-temperature solar energy heat collector.
2. ultra-low-loop temperature solar-net for air-source heat pump units of external sustainable heat source according to claim 1, feature
It is that the gas-liquid separator is located on major loop, the c of entrance and four-way reversing valve exports connection, exports (double with quasi- second level
Grade) compressor air entry connection.
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| CN201910208679.6A CN109945549B (en) | 2019-03-19 | 2019-03-19 | Ultralow-loop-temperature solar-air source heat pump unit externally connected with sustainable heat source |
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Cited By (7)
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| CN110686308A (en) * | 2019-10-25 | 2020-01-14 | 东北电力大学 | Solar energy and air source heat pump heat energy graded utilization system |
| CN110848845A (en) * | 2019-11-18 | 2020-02-28 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system, control method and air conditioner |
| CN112361655A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361653A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361654A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361652A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN114608218A (en) * | 2022-03-23 | 2022-06-10 | 无锡中天新能源科技发展有限公司 | Double-heat-source coupling type heat pump system |
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| CN110686308A (en) * | 2019-10-25 | 2020-01-14 | 东北电力大学 | Solar energy and air source heat pump heat energy graded utilization system |
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| CN112361655A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361653A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361654A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361652A (en) * | 2020-10-28 | 2021-02-12 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112361653B (en) * | 2020-10-28 | 2023-02-24 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN114608218A (en) * | 2022-03-23 | 2022-06-10 | 无锡中天新能源科技发展有限公司 | Double-heat-source coupling type heat pump system |
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