CN107388621A - Heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system and its control method - Google Patents
Heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system and its control method Download PDFInfo
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- CN107388621A CN107388621A CN201710694082.8A CN201710694082A CN107388621A CN 107388621 A CN107388621 A CN 107388621A CN 201710694082 A CN201710694082 A CN 201710694082A CN 107388621 A CN107388621 A CN 107388621A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention is a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system and its control method, the system includes the valve of air injection enthalpy-increasing compressor, four-way reversing valve, gas-liquid separator, the first electric expansion valve, the second electric expansion valve, indoor heat exchanger, outdoor heat exchanger, boiler, electric heater and correlation, it is characterized in, in addition to storage heater, solar thermal collector.When environment temperature is less than switching temperature in the winter time, solar energy and air source heat pump are coupled together by storage heater, when the shortage of heat of storage heater, start heat pump heat-accumulating process.Solar energy is directly used in water heating at other seasons, so as to give full play to the advantage of solar energy.Auxiliary thermal source of the present invention using storage heater as jet branch road, can be significantly increased the mass flow of jet road refrigerant and the heating capacity of unit, make unit very low in environment temperature（Such as it is less than 20 DEG C）Shi Yiran stable operations.The problem of also can solve unit frosting defrosting simultaneously.
Description
Technical field
The present invention relates to heating field, be a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system and its
Control method.
Background technology
Air source heat pump is in low temperature environment（As being less than -5 DEG C）Due to the increase of compressor pressure ratios during operation, can cause to arrange
Temperature spends height, and heating effect is deteriorated, and the Energy Efficiency Ratio of unit can substantially reduce, delivery temperature rise, less reliable, Er Qiehuan
Border temperature is lower, and this problem is more serious, while is accompanied by the problem of unit frosting defrosts.Traditional air injection enthalpy-increasing and twin-stage
Compress technique has certain effect to improving the heating performance under Unit Low, but when outdoor temperature is very low（As being less than -20 DEG C）,
Unit still can not effectively be run.
Traditional reverse cycle defrosting technology system in defrosting is changed into kind of refrigeration cycle from heating circulation, not only not heat supply, goes back
To be used to defrost from indoor heat absorption, cause room temperature to decline violent（About decline 5-8 DEG C）, indoor comfort is had a strong impact on, and be
System fluctuation of service, poor reliability.Therefore, the frosting defrosting problem of air source heat pump, which becomes, restricts one of its Effec-tive Function
Bottleneck, up for solving.
For solar energy as a kind of inexhaustible, nexhaustible clean energy resource, it is always to enjoy favor that it, which is utilized,.In heat supply
Field, it is a kind of effective technology means using solar energy that solar energy and air source heat pump, which are combined, but winter solar
Radiation intensity is weaker, and collecting efficiency at low temperature is relatively low, and heat collector only uses in the winter time, causes the economy of heat collector not
It is good.
The content of the invention
The purpose of the present invention is to propose to a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system and its control
Method processed, it is intended to improve the heating performance of unit at low temperature, solve unit frosting defrosting problem, that improves heat collector utilizes effect
Rate and economy.
The purpose of the present invention be by following technical scheme come be realize：A kind of heat-storage solar energy couples air injection enthalpy-increasing type
Air source heat pump system, it is swollen that the system includes air injection enthalpy-increasing compressor 1, four-way reversing valve 2, indoor heat exchanger 3, the first electronics
Swollen valve 6, the second electric expansion valve 23, outdoor heat exchanger 24 and gas-liquid separator 25, it is characterised in that also including storage heater 4, too
It is positive can heat collector 15, boiler 17, the first magnetic valve 10, second solenoid valve 13, the 3rd magnetic valve 18, the 4th magnetic valve 20, the
One pipeline 7, the second pipeline 11, the 3rd pipeline 12, the 4th pipeline 19, the 5th pipeline 21 and the 6th pipeline 22, contain in storage heater 4
First spiral coil 5, the second spiral coil 8 and the 3rd spiral coil 9 and filled with phase change heat storage material, solar thermal collector 15
Below boiler 17, contain heat exchange coil 14 and electric heater 16, the exhaust outlet of air injection enthalpy-increasing compressor 1 in boiler 17
Connected with the first through hole of four-way reversing valve 2, the second through hole of four-way reversing valve 2 connects with the arrival end of indoor heat exchanger 3, room
The port of export of interior heat exchanger 3 connects with the arrival end of the second spiral coil 8 in the arrival end and storage heater 4 of the first pipeline 7 simultaneously,
The port of export of first pipeline 7 connects with the arrival end of the first spiral coil 5 in storage heater 4, and the first electric expansion valve 6 is arranged on
On one pipeline 7, the port of export of the first spiral coil 5 connects with the puff prot of air injection enthalpy-increasing compressor 1, the second spiral coil 8
The port of export connects with the arrival end of the 6th pipeline 22, and the port of export of the 6th pipeline 22 connects with the arrival end of outdoor heat exchanger 24,
Second electric expansion valve 23 is arranged on the 6th pipeline 22, the port of export of outdoor heat exchanger 24 and the threeway of four-way reversing valve 2
Hole connects, and the fourth hole of four-way reversing valve 2 connects with the arrival end of gas-liquid separator 25, the port of export of gas-liquid separator 25 and
The air entry of air injection enthalpy-increasing compressor 1 connects, the port of export of the 3rd spiral coil 9 and the entrance of the second pipeline 11 in storage heater 4
End connection, the port of export of the second pipeline 11 connect with the arrival end of the 3rd pipeline 12 and the arrival end of solar thermal collector 15 simultaneously
Logical, the first magnetic valve 10 is arranged on the second pipeline 11, the port of export of the 3rd pipeline 12 and heat exchange coil 14 in boiler 17
Arrival end is connected, and second solenoid valve 13 is arranged on the 3rd pipeline 12, and the port of export of heat exchange coil 14 enters with the 4th pipeline 19
The connection of mouth end, the port of export of the 4th pipeline 19 connect with the arrival end of the 5th pipeline 21 and the port of export of solar thermal collector 15 simultaneously
Logical, the 3rd magnetic valve 18 is arranged on the 4th pipeline 19, the port of export and the 3rd spiral coil 9 in storage heater 4 of the 5th pipeline 21
Arrival end connection, the 4th magnetic valve 20 is arranged on the 5th pipeline 21.
The phase transition temperature of phase change heat storage material is between 10-25 DEG C in the storage heater 4.
The control method of the system is：
1）Heating control：
A. when outside air temperature is higher than the first switching temperature, the first switching temperature is in value between -5 DEG C ~ 0 DEG C, for sky
Air supply heat pump side, the first electric expansion valve 6 are closed, and the second electric expansion valve 23 is operating normally；For solar thermal collector side,
Two magnetic valves 13 and the 3rd magnetic valve 18 are opened, and the first magnetic valve 10 and second solenoid valve 20 are closed, and when solar energy deficiency, are opened
Dynamic electric heater 16, with solar association or independent water heating；
B. when outside air temperature is in the first switching temperature and the second switching temperature, the second switching temperature -20 DEG C ~ -15 DEG C it
Between value when, for air source heat pump side, the first electric expansion valve 6 and the second electric expansion valve 23 are operating normally；For the sun
Energy heat collector side, the first magnetic valve 10 and second solenoid valve 20 are opened, and the magnetic valve 18 of second solenoid valve 13 and the 3rd is closed, by electricity
Heater 16 is responsible for water heating；
C. when outside air temperature is less than second switching temperature, for air source heat pump side, set when indoor temperature is less than
1 DEG C of definite value, when, unit starting heat supplying process, the first electric expansion valve 6 and the second electric expansion valve 23 are operating normally, and interior is changed
The blower fan of hot device 3 runs well, the heat release of process storage heater 4, and indoor temperature rises, when indoor temperature is higher than 1 DEG C of setting value,
The blower fan of unit starting heat-accumulating process, the first electric expansion valve 6 and indoor heat exchanger 3 is closed, and the second electric expansion valve 23 is normal
Action, the accumulation of heat of process storage heater 4, indoor temperature decline, and when indoor temperature is less than 1 DEG C of setting value, unit switches to confession again
Thermal process；For solar thermal collector side, the first magnetic valve 10 and second solenoid valve 20 are opened, the electricity of second solenoid valve 13 and the 3rd
Magnet valve 18 is closed, and is responsible for water heating by electric heater 16；
2）Refrigeration control：For air source heat pump side, the first electric expansion valve 6 is operating normally, the standard-sized sheet of the second electric expansion valve 23,
For solar thermal collector side, the first magnetic valve 10 and the 4th magnetic valve 20 are closed, the magnetic valve 18 of second solenoid valve 13 and the 3rd
Open, when solar energy deficiency, start electric heater 16, with solar association or independent water heating.
Beneficial effects of the present invention are as follows：
（1）For heating in use, the setting of storage heater can increase the flow of jet branch road, heating capacity and heating energy are greatly improved
Effect, it is more preferable to the cooling effect of exhaust, make unit very low in environment temperature（As being less than -20 DEG C）Shi Yiran stable operations；Especially
Northern China winter heating is applicable to use；
（2）Heat collector only needs thermal-arrest that collecting efficiency can be substantially improved to 10-25 DEG C in the winter time；Summer because solar radiation is stronger,
Direct thermal-arrest can so ensure the annual use of heat collector, and the collecting efficiency that winter Xia Junyou is higher, warp to required hot water temperature
Ji property significantly improves；
（3）Solar thermal collection system and heat pump are separate, do not interfere with each other, and the two is coupled together by accumulation of heat, storage heater
Storage Exotherm Time is short, and required volume is small, and cost is low, making easy to process；
（4）Defrosting speed is fast during defrosting, and indoor temperature declines less, and comfortableness greatly improves, while unit operation is stable, and defrosting is thorough
Bottom.
Brief description of the drawings
Fig. 1 is a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system structural representation of the present invention.
Embodiment
Reference picture 1, a kind of heat-storage solar energy couple air injection enthalpy-increasing type air source heat pump system, and the system includes jet
Enthalpy-increasing compressor 1, four-way reversing valve 2, indoor heat exchanger 3, the first electric expansion valve 6, the second electric expansion valve 23, outdoor heat exchange
Device 24 and gas-liquid separator 25, it is characterised in that also including storage heater 4, solar thermal collector 15, boiler 17, the first electromagnetism
Valve 10, second solenoid valve 13, the 3rd magnetic valve 18, the 4th magnetic valve 20, the first pipeline 7, the second pipeline 11, the 3rd pipeline 12,
4th pipeline 19, the 5th pipeline 21 and the 6th pipeline 22, storage heater 4 is interior to contain the first spiral coil 5, the and of the second spiral coil 8
3rd spiral coil 9 is simultaneously located at below boiler 17 filled with phase change heat storage material, solar thermal collector 15, and boiler 17 includes
There are heat exchange coil 14 and electric heater 16, the exhaust outlet of air injection enthalpy-increasing compressor 1 connects with the first through hole of four-way reversing valve 2,
Second through hole of four-way reversing valve 2 connects with the arrival end of indoor heat exchanger 3, and the port of export of indoor heat exchanger 3 is simultaneously with first
The arrival end of pipeline 7 connects with the arrival end of the second spiral coil 8 in storage heater 4, the port of export and the storage heater 4 of the first pipeline 7
The arrival end connection of interior first spiral coil 5, the first electric expansion valve 6 are arranged on the first pipeline 7, the first spiral coil 5
The port of export connects with the puff prot of air injection enthalpy-increasing compressor 1, the port of export of the second spiral coil 8 and the arrival end of the 6th pipeline 22
Connection, the port of export of the 6th pipeline 22 connect with the arrival end of outdoor heat exchanger 24, and the second electric expansion valve 23 is arranged on the 6th
On pipeline 22, the port of export of outdoor heat exchanger 24 connects with the third through-hole of four-way reversing valve 2, the four-way of four-way reversing valve 2
Hole connects with the arrival end of gas-liquid separator 25, and the port of export of gas-liquid separator 25 connects with the air entry of air injection enthalpy-increasing compressor 1
Logical, the port of export of the 3rd spiral coil 9 connects with the arrival end of the second pipeline 11 in storage heater 4, the port of export of the second pipeline 11
Connected simultaneously with the arrival end of the 3rd pipeline 12 and the arrival end of solar thermal collector 15, the first magnetic valve 10 is arranged on the second pipe
On road 11, the port of export of the 3rd pipeline 12 is connected with the arrival end of heat exchange coil 14 in boiler 17, and second solenoid valve 13 is set
On the 3rd pipeline 12, the port of export of heat exchange coil 14 connects with the arrival end of the 4th pipeline 19, the port of export of the 4th pipeline 19
Connected simultaneously with the arrival end of the 5th pipeline 21 and the port of export of solar thermal collector 15, the 3rd magnetic valve 18 is arranged on the 4th pipe
On road 19, the port of export of the 5th pipeline 21 is connected with the arrival end of the 3rd spiral coil 9 in storage heater 4, and the 4th magnetic valve 20 is set
Put on the 5th pipeline 21.The phase transition temperature of phase change heat storage material is between 10-25 DEG C in the storage heater 4.
A kind of heat-storage solar energy provided according to Fig. 1 couples air injection enthalpy-increasing type air source heat pump system, the system
Control method is：
1）Heating control, used suitable for the winter heating of cold：
A. when outside air temperature is higher than the first switching temperature, the first switching temperature is in value between -5 DEG C ~ 0 DEG C, for sky
Air supply heat pump side, the first electric expansion valve 6 are closed, and the second electric expansion valve 23 is operating normally, and the flow of refrigerant is as follows：From spray
The high-temperature high-pressure gas refrigerant that gas enthalpy-increasing compressor 1 comes out is entered in indoor heat exchanger 3 through four-way reversing valve 2 condenses heat release,
The heat supply to interior is realized, refrigerant out enters to be subcooled in storage heater 4, and heat is passed to by the second spiral coil 8
Phase change heat storage material stores, and the refrigerant after supercooling is become the liquid of low-temp low-pressure by the throttling of the second electric expansion valve 23,
Enter after the heat of vaporization in outdoor heat exchanger 24 in absorption air becomes gas and returned through four-way reversing valve 2, gas-liquid separator 25
To the air entry of air injection enthalpy-increasing compressor 1；For solar thermal collector side, the magnetic valve 18 of second solenoid valve 13 and the 3rd is opened,
First magnetic valve 10 and second solenoid valve 20 are closed, and the flow of refrigerant is as follows；The High Temperature Gas come out from solar thermal collector 15
Cryogen enters through second solenoid valve 13 condenses heat release in boiler 17, liberated heat is inhaled by heat exchange coil 14 by water
Receive, become liquid afterwards and return in solar thermal collector 15 through the 3rd magnetic valve 18 to continue to be heated.If there is the sun in the process
Can be insufficient, when the hot water produced is inadequate, then start electric heater 16, with solar association water heating；
B. when outside air temperature is in the first switching temperature and the second switching temperature, the second switching temperature -20 DEG C ~ -15 DEG C it
Between between value when, for air source heat pump side, the first electric expansion valve 6 and the second electric expansion valve 23 are operating normally, refrigeration
The flow of agent is as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1 enters interior through four-way reversing valve 2 and changed
Heat release is condensed in hot device 3, realizes the heat supply to interior, refrigerant out is divided into two-way, enters be subcooled in storage heater 4 all the way,
Heat is passed into phase change heat storage material by the second spiral coil 8 to store, the refrigerant after supercooling is swollen by the second electronics
Swollen valve 23, which throttles, becomes the liquid of low-temp low-pressure, enters after the heat of vaporization in outdoor heat exchanger 24 in absorption air becomes gas
The air entry of air injection enthalpy-increasing compressor 1 is returned to through four-way reversing valve 2, gas-liquid separator 25；Another way refrigerant is by the first electronics
The liquid that the throttling of expansion valve 6 becomes low-temp low-pressure is entered in storage heater 4, is passed through the first spiral coil 5 and is absorbed phase change heat storage material
In heat of vaporization become the laggard puff prot to air injection enthalpy-increasing compressor 1 of gas.For solar thermal collector side, control method
As follows, the first magnetic valve 10 and the 4th magnetic valve 20 are opened, and the magnetic valve 18 of second solenoid valve 13 and the 3rd is closed, the stream of refrigerant
Journey is as follows：Condensation in storage heater 4 is entered from the high-temperature gas refrigerant that solar thermal collector 15 comes out through the first magnetic valve 10 to put
Heat, liberated heat pass to phase change heat storage material by the 3rd spiral coil 9 and stored, and liquid refrigerant out is through the
Four magnetic valves 20, which are entered in solar thermal collector 15, to be continued to be heated, and the hot water in boiler is made by electric heater 16；
C. when outside air temperature is less than second switching temperature, for air source heat pump side, set when indoor temperature is less than
1 DEG C of definite value, such as 20 DEG C（If setting value is 21 DEG C）When, unit starting heat supplying process, the first electric expansion valve 6 and the second electronics are swollen
Swollen valve 23 is operating normally, and the blower fan of indoor heat exchanger 3 runs well, and the flow of refrigerant is as follows：Go out from air injection enthalpy-increasing compressor 1
The high-temperature high-pressure gas refrigerant come is entered in indoor heat exchanger 3 through four-way reversing valve 2 condenses heat release, realizes the confession to interior
Heat, refrigerant out are divided into two-way, enter be subcooled in storage heater 4 all the way, heat is passed into phase by the second spiral coil 8
Change heat storage material stores, and the refrigerant after supercooling is become the liquid of low-temp low-pressure by the throttling of the second electric expansion valve 23, enters
Heat of vaporization into outdoor heat exchanger 24 in absorption air returns to after becoming gas through four-way reversing valve 2, gas-liquid separator 25
The air entry of air injection enthalpy-increasing compressor 1；The liquid that another way refrigerant is become low-temp low-pressure by the throttling of the first electric expansion valve 6 enters
Into storage heater 4, it is laggard to jet increasing that gas is become by the heat of vaporization in the first spiral coil 5 absorption phase change heat storage material
The puff prot of enthalpy compressor 1, the heat release of process storage heater 4, indoor temperature can rise；When indoor temperature is higher than 1 DEG C of setting value, i.e.,
At 22 DEG C, unit starting heat-accumulating process, the blower fan closing of the first electric expansion valve 6 and indoor heat exchanger 3, the second electric expansion valve
23 regular events, the flow of refrigerant are as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1 changes through four-way
Entered to valve 2, indoor heat exchanger 3 and heat release is condensed in storage heater 4, liberated heat passes to phase transformation by the second spiral coil 8
Heat-storing material stores, and refrigerant out is become the liquid of low-temp low-pressure by the throttling of the second electric expansion valve 23, enters room
Heat of vaporization in external heat exchanger 24 in absorption air becomes to return to jet through four-way reversing valve 2, gas-liquid separator 25 after gas
The air entry of enthalpy-increasing compressor 1, the accumulation of heat of process storage heater 4, indoor temperature can decline, when indoor temperature is less than 1 DEG C of setting value,
At i.e. 20 DEG C, unit switches to heat supplying process again, so far completes a heat supply and accumulation of heat circulation.For solar thermal collector
Side, control method is as follows, and the first magnetic valve 10 and the 4th magnetic valve 20 are opened, and the magnetic valve 18 of second solenoid valve 13 and the 3rd closes
Close, the flow of refrigerant is as follows：The high-temperature gas refrigerant come out from solar thermal collector 15 enters storage through the first magnetic valve 10
Heat release is condensed in hot device 4, liberated heat passes to phase change heat storage material by the 3rd spiral coil 9 and stored, out
Liquid refrigerant is entered in solar thermal collector 15 through the 4th magnetic valve 20 to be continued to be heated.Hot water in boiler is by electrical heating
Device 16 is made.
The present invention need not start air injection enthalpy-increasing branch road when outside air temperature is higher than the first switching temperature, be transported by single-stage
Row can meet heating needs, and storage heater 4 now serves as the effect of subcooler, and the unnecessary heating capacity of unit is stored in into phase transformation
In heat-storing material, the auxiliary thermal source as jet branch road is discharged again until outdoor temperature is less than the first switching temperature, this
Sample can realize the transfer of energy, and system more saves；When outside air temperature is less than the second switching temperature, due to storage heater 4
Interior pressure is intermediate pressure, and the compression ratio of compressor can substantially reduce so in heat-accumulating process.And in heat supplying process, store
Auxiliary thermal source of the hot device 4 as jet road, because its temperature is high, heat is sufficient, and the quality of jet road refrigerant can be significantly increased
Flow, so as to play a part of cooling exhaust well, make unit very low in environment temperature（As being less than -20 DEG C）Shi Yiran
Can stable operation.And when there is solar energy, the heating capacity of unit can also be significantly increased.
Air injection enthalpy-increasing compressor 1 in the present invention can also be combined with converter technique, and unit is allowed in heat supply by frequency conversion
Run with high frequency under accumulation of heat operating mode, can not only so greatly improve the heating capacity of unit at low temperature, moreover it is possible to shorten thermal storage time,
Indoor comfortableness is further improved, improves the Energy Efficiency Ratio of system.
The setting of storage heater adds spray air flow in the present invention, improves the effect to compressor air-discharging cooling, can answer
Use under -30 DEG C of low temperature environment.
During Defrost operation, the blower fan of the first electric expansion valve 6 and indoor heat exchanger 3 is closed, and the second electric expansion valve 23 is just
Often action, the flow of refrigerant are as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1 is through four-way reversing valve
2 enter heat release are condensed in outdoor heat exchanger 24, and liberated heat is used to defrost, and refrigerant out is by the second electric expansion valve 23
The liquid that throttling becomes low-temp low-pressure is entered in storage heater 4, absorbs the heat in phase change heat storage material by the second spiral coil 8
Evaporation becomes to return to the air-breathing of air injection enthalpy-increasing compressor 1 after gas through indoor heat exchanger 3, four-way reversing valve 2, gas-liquid separator 25
Mouthful.
Present invention storage heater 4 in defrosting is used as low level heat energy, and the heat of abundance can be provided for defrosting process, is not only defrosted
Speed is fast, and defrosting is thorough, and system run all right during defrosting, and indoor temperature declines less, and comfortableness greatly improves.
The present invention, in use, for solar thermal collector side, because solar energy enriches, therefore is directly used in heating in summer
Water.First magnetic valve 10 and the 4th magnetic valve 20 are closed, and the magnetic valve 18 of second solenoid valve 13 and the 3rd is opened, the flow of refrigerant
It is as follows：Condensation in boiler 17 is entered from the high-temperature gas refrigerant that solar thermal collector 15 comes out through second solenoid valve 13 to put
Heat, liberated heat are fed water by heat exchange coil 14 and heated, become liquid afterwards and return to solar energy heating through the 3rd magnetic valve 18
Continue to be heated in device 15.If solar energy deficiency occurs in the process, when the hot water produced is inadequate, then start electric heater 16, with
Solar association water heating.For air source heat pump side, when needing refrigerating operaton, the first electric expansion valve 6 is operating normally, the
The standard-sized sheet of two electric expansion valve 23, the flow of refrigerant are as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1
Entered through four-way reversing valve 2 and heat release is condensed in outdoor heat exchanger 24, liberated heat is taken away by outdoor air, refrigerant out
The liquid for being become low-temp low-pressure by the throttling of the second electric expansion valve 23 is entered in indoor heat exchanger 3 through storage heater 4, absorbs Interior Space
The heat of vaporization of gas becomes to return to the air entry of air injection enthalpy-increasing compressor 1 after gas through four-way reversing valve 2, gas-liquid separator 25.
The heat collector of the present invention only needs thermal-arrest that collecting efficiency can be substantially improved to 10-25 DEG C in the winter time；Summer is because of the sun
Radiation is stronger, directly thermal-arrest to required hot water temperature, can so ensure that heat collector is annual and use, and winter Xia Junyou is higher
Collecting efficiency, economy significantly improve.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the invention, for this area
For technical staff, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (3)
1. a kind of heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system, the system includes air injection enthalpy-increasing compressor
（1）, four-way reversing valve（2）, indoor heat exchanger（3）, the first electric expansion valve（6）, the second electric expansion valve（23）, outdoor heat exchange
Device（24）And gas-liquid separator（25）, it is characterised in that also including storage heater（4）, solar thermal collector（15）, boiler
（17）, the first magnetic valve（10）, second solenoid valve（13）, the 3rd magnetic valve（18）, the 4th magnetic valve（20）, the first pipeline（7）、
Second pipeline（11）, the 3rd pipeline（12）, the 4th pipeline（19）, the 5th pipeline（21）With the 6th pipeline（22）, storage heater（4）It is interior
Contain the first spiral coil（5）, the second spiral coil（8）With the 3rd spiral coil（9）And filled with phase change heat storage material, solar energy
Heat collector（15）Positioned at boiler（17）Below, boiler（17）Inside contain heat exchange coil（14）And electric heater（16）, spray
Gas enthalpy-increasing compressor（1）Exhaust outlet and four-way reversing valve（2）First through hole connection, four-way reversing valve（2）The second through hole
With indoor heat exchanger（3）Arrival end connection, indoor heat exchanger（3）The port of export simultaneously with the first pipeline（7）Arrival end and
Storage heater（4）Interior second spiral coil（8）Arrival end connection, the first pipeline（7）The port of export and storage heater（4）Interior first spiral shell
Capstan pipe（5）Arrival end connection, the first electric expansion valve（6）It is arranged on the first pipeline（7）On, the first spiral coil（5）'s
The port of export and air injection enthalpy-increasing compressor（1）Puff prot connection, the second spiral coil（8）The port of export and the 6th pipeline（22）'s
Arrival end connects, the 6th pipeline（22）The port of export and outdoor heat exchanger（24）Arrival end connection, the second electric expansion valve
（23）It is arranged on the 6th pipeline（22）On, outdoor heat exchanger（24）The port of export and four-way reversing valve（2）Third through-hole connection,
Four-way reversing valve（2）Fourth hole and gas-liquid separator（25）Arrival end connection, gas-liquid separator（25）The port of export with
Air injection enthalpy-increasing compressor（1）Air entry connection, storage heater（4）Interior 3rd spiral coil（9）The port of export and the second pipeline
（11）Arrival end connection, the second pipeline（11）The port of export simultaneously with the 3rd pipeline（12）Arrival end and solar thermal collector
（15）Arrival end connection, the first magnetic valve（10）It is arranged on the second pipeline（11）On, the 3rd pipeline（12）The port of export with heat
Water tank（17）Interior heat exchange coil（14）Arrival end connection, second solenoid valve（13）It is arranged on the 3rd pipeline（12）On, exchange heat disk
Pipe（14）The port of export and the 4th pipeline（19）Arrival end connection, the 4th pipeline（19）The port of export simultaneously with the 5th pipeline
（21）Arrival end and solar thermal collector（15）The port of export connection, the 3rd magnetic valve（18）It is arranged on the 4th pipeline（19）
On, the 5th pipeline（21）The port of export and storage heater（4）Interior 3rd spiral coil（9）Arrival end connection, the 4th magnetic valve
（20）It is arranged on the 5th pipeline（21）On.
2. a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system according to claim 1, its feature
It is, the storage heater（4）The phase transition temperature of middle phase change heat storage material is between 10-25 DEG C.
3. a kind of heat-storage solar energy coupling air injection enthalpy-increasing type air source heat pump system according to claim 1, its feature
It is, the control method of the system is：
1）Heating control：
A. when outside air temperature is higher than the first switching temperature, the first switching temperature is in value between -5 DEG C ~ 0 DEG C, for sky
Air supply heat pump side, the first electric expansion valve（6）Close, the second electric expansion valve（23）Regular event；For solar thermal collector
Side, second solenoid valve（13）With the 3rd magnetic valve（18）Open, the first magnetic valve（10）And second solenoid valve（20）Close；
When solar energy deficiency, start electric heater（16）, with solar association or independent water heating；
B. when outside air temperature is in the first switching temperature and the second switching temperature, the second switching temperature -20 DEG C ~ -15 DEG C it
Between value when, for air source heat pump side, the first electric expansion valve（6）With the second electric expansion valve（23）Regular event；For
Solar thermal collector side, the first magnetic valve（10）And second solenoid valve（20）Open, second solenoid valve（13）With the 3rd magnetic valve
（18）Close, by electric heater（16）It is responsible for water heating；
C. when outside air temperature is less than second switching temperature, for air source heat pump side, set when indoor temperature is less than
1 DEG C of definite value, when, unit starting heat supplying process, the first electric expansion valve（6）With the second electric expansion valve（23）Regular event, room
Interior heat exchanger（3）Blower fan run well, the process storage heater（4）Heat release, indoor temperature rise, when indoor temperature is higher than setting
During 1 DEG C of value, unit starting heat-accumulating process, the first electric expansion valve（6）And indoor heat exchanger（3）Blower fan close, the second electronics
Expansion valve（23）Regular event, the process storage heater（4）Accumulation of heat, indoor temperature declines, when indoor temperature is less than 1 DEG C of setting value
When, unit switches to heat supplying process again；For solar thermal collector side, the first magnetic valve（10）And second solenoid valve（20）Beat
Open, second solenoid valve（13）With the 3rd magnetic valve（18）Close, by electric heater（16）It is responsible for water heating；
2）Refrigeration control：For air source heat pump side, the first electric expansion valve（6）Regular event, the second electric expansion valve（23）
Standard-sized sheet, for solar thermal collector side, the first magnetic valve（10）With the 4th magnetic valve（20）Close, second solenoid valve（13）With
Three magnetic valves（18）Open, when solar energy deficiency, start electric heater（16）, with solar association or independent water heating.
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| CN201710694082.8A CN107388621B (en) | 2017-08-15 | 2017-08-15 | Heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system and its control method |
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| CN201710694082.8A CN107388621B (en) | 2017-08-15 | 2017-08-15 | Heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system and its control method |
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| CN107388621B CN107388621B (en) | 2019-11-29 |
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| CN108253643A (en) * | 2018-01-17 | 2018-07-06 | 福建工程学院 | One kind is that thermal regenerator heat pump couples hot-water heating system and control method with solar energy |
| CN109579192A (en) * | 2018-12-28 | 2019-04-05 | 瀚润联合高科技发展（北京）有限公司 | Evaporate cold space energy double-source heat pump unit |
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| CN112880237A (en) * | 2021-01-13 | 2021-06-01 | 东南大学 | Solar auxiliary air source heat pump triple co-generation system |
| CN114046575A (en) * | 2021-11-03 | 2022-02-15 | 珠海格力电器股份有限公司 | Air conditioner hot water integrated system and control method thereof |
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| CN115077120A (en) * | 2022-07-07 | 2022-09-20 | 湖南大学 | Heat pump composite system and control method |
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