CN107388633A - A kind of injection enthalpy-increasing air source heat pump and its control method - Google Patents
A kind of injection enthalpy-increasing air source heat pump and its control method Download PDFInfo
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- CN107388633A CN107388633A CN201710694103.6A CN201710694103A CN107388633A CN 107388633 A CN107388633 A CN 107388633A CN 201710694103 A CN201710694103 A CN 201710694103A CN 107388633 A CN107388633 A CN 107388633A
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B47/02—Defrosting cycles
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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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- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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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
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
Abstract
The present invention is a kind of injection enthalpy-increasing air source heat pump and its control method, including air injection enthalpy-increasing compressor, four-way reversing valve, indoor heat exchanger, gas-liquid separator, the first electric expansion valve, the second electric expansion valve, outdoor heat exchanger, it is characterized in, also include storage heater, first magnetic valve, the storage heater is interior to contain air injection enthalpy-increasing compressor.When environment temperature is less than the second switching temperature, control method is：When indoor temperature is less than 1 DEG C of setting value, unit starting heat supplying process, this auxiliary thermal source of process storage heater as jet road, the mass flow of jet road refrigerant can be significantly increased, make stable operation of unit, while can also improve heating capacity.The process chamber temperature can rise, and when indoor temperature is higher than 1 DEG C of setting value, unit starting heat-accumulating process, the high-temperature exhaust air of this process air injection enthalpy-increasing compressor is directly used in the accumulation of heat of storage heater.The process chamber temperature can decline, and when indoor temperature is less than 1 DEG C of setting value, unit switches to heat supplying process again.
Description
Technical field
The present invention relates to heating field, specifically a kind of injection enthalpy-increasing air source heat pump and its control method.
Background technology
Air source heat pump is in low temperature environment（Less than -5 DEG C）Due to the increase of compressor pressure ratios during operation, can cause to be vented
Temperature is too high, and heating effect is deteriorated, and the Energy Efficiency Ratio of unit can substantially reduce, delivery temperature rise, less reliable, and environment
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 pressure
Contracting technology 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）, machine
Group still can not effectively be run, and delivery temperature is still easily higher.
Traditional reverse cycle defrosting technology four-way reversing valve in defrosting commutates, and system is changed into refrigeration from heating circulation and followed
Ring, not only not heat supply, to be also used to defrost from indoor heat absorption, cause room temperature to decline violent（About decline 5-8 DEG C）, have a strong impact on room
Interior comfortableness, and system operation is unstable, poor reliability, the high-low pressure docking of simultaneity factor（When heat supply switches with defrosting）
Larger mechanical shock can be caused to part so that unit is fragile, and service life reduces；Although the Defrost technology of some improvement
Defrosting time can shorten, but the problem of indoor temperature reduces, high-low pressure docks still be present.Therefore, the frosting of air source heat pump
Defrosting problem is always to restrict a bottleneck of its Effec-tive Function, is not yet well solved.
The content of the invention
The purpose of the present invention is to propose to a kind of injection enthalpy-increasing air source heat pump, it is intended to improve the system of unit at low temperature
Hot property, while also can solve the problem of unit frosting defrosts.
The purpose of the present invention be by following technical scheme come be realize：A kind of injection enthalpy-increasing air source heat pump, institute
Stating system includes air injection enthalpy-increasing compressor 1, four-way reversing valve 3, indoor heat exchanger 4, gas-liquid separator 6, the first electric expansion valve
8th, the second electric expansion valve 11, outdoor heat exchanger 12, it is characterised in that also including storage heater 2, the first magnetic valve 5, the first pipeline
14th, the second pipeline 15, the 5th pipeline 18, the 6th pipeline 19, the storage heater 2 is interior to contain air injection enthalpy-increasing compressor 1, the first coil pipe
20th, the second coil pipe 21 and charge and discharge have phase change heat storage material, the port of export of the first coil pipe 20 and the puff prot of air injection enthalpy-increasing compressor 1
Connection, the exhaust outlet of air injection enthalpy-increasing compressor 1 connect with the first through hole of four-way reversing valve 3, the second through hole of four-way reversing valve 3
Connected with the entrance point of indoor heat exchanger 4, the port of export of indoor heat exchanger 4 is managed with the entrance point of the first pipeline 14 and second simultaneously
The entrance point connection on road 15, the port of export of the first pipeline 14 are connected with the entrance point of the second coil pipe 21, and the first magnetic valve 5 is arranged on
On first pipeline 14, the port of export of the second coil pipe 21 connects with the entrance point of the 5th pipeline 18, the port of export of the 5th pipeline 18 with
The entrance point connection of outdoor heat exchanger 12, the second electric expansion valve 11 are arranged on the 5th pipeline 18, the outlet of the second pipeline 15
End is connected with the entrance point of the first coil pipe 20, and the first electric expansion valve 8 is arranged on the second pipeline 15, and the of four-way reversing valve 3
Three through holes connect with the entrance point of the 6th pipeline 19, and the port of export of the 6th pipeline 19 connects with the port of export of outdoor heat exchanger 12,
The fourth hole of four-way reversing valve 3 connects with the entrance point of gas-liquid separator 6, the port of export and air injection enthalpy-increasing of gas-liquid separator 6
The air inlet connection of compressor 1.
The phase transition temperature of phase change heat storage material is between 15-25 DEG C in the storage heater 2.
The system also includes the 3rd magnetic valve 9, the 4th magnetic valve 10 and the 4th pipeline 17, and the 5th pipeline 18 is from entrance point
The 3rd magnetic valve 9 and the second electric expansion valve 11, entrance point and the indoor heat exchanger 4 of the 4th pipeline 17 are sequentially provided with to the port of export
The port of export connection, the pipeline connection between the port of export and the 3rd magnetic valve 9 and the second electric expansion valve 11 of the 4th pipeline 17,
4th magnetic valve 10 is arranged on the 4th pipeline 17.
The system also includes the 5th magnetic valve 13, the 6th magnetic valve 22, the 7th magnetic valve 23, the 7th pipeline 24 and the 8th
Pipeline 25, the 5th magnetic valve 13 are arranged on the 6th pipeline 19, the port of export of the entrance point of the 7th pipeline 24 and the first pipeline 14
Connection, the port of export of the 7th pipeline 24 connect with the entrance point of gas-liquid separator 6, and the 6th magnetic valve 22 is arranged on the 7th pipeline 24
On, the pipeline connection between the entrance point and the 4th magnetic valve 10 and the entrance point of the 4th pipeline 17 of the 8th pipeline 25, the 8th pipe
The port of export on road 25 is connected with the port of export of outdoor heat exchanger 12, and the 7th magnetic valve 23 is arranged on the 8th pipeline 25.
Control method during the system heating is as follows:
a）When outside air temperature is higher than the first switching temperature（First switching temperature value between -5 DEG C ~ 0 DEG C）When, the first electricity
Magnet valve 5 is opened, and the first electric expansion valve 8 is closed, and the second electric expansion valve 11 is operating normally；
b）When outside air temperature is in the first switching temperature and the second switching temperature（Second switching temperature -20 DEG C ~ -15 DEG C it
Between value）Between when, the first magnetic valve 5 is opened, and the first electric expansion valve 8 and the second electric expansion valve 11 are operating normally.
When outside air temperature is less than second switching temperature, under this precondition, when indoor temperature is less than
During 1 DEG C of setting value, unit starting heat supplying process, the first magnetic valve 5 is opened, and the first electric expansion valve 8 is operating normally, indoor heat exchange
The blower fan of device 4 runs well.The heat release of process storage heater 2, indoor temperature rise；When indoor temperature is higher than 1 DEG C of setting value, machine
Group starts heat-accumulating process, and the first magnetic valve 5 is opened, and the first electric expansion valve 8 is closed, and the blower fan of indoor heat exchanger 4 is closed, the mistake
The accumulation of heat of journey storage heater 2, indoor temperature decline, and when indoor temperature is less than 1 DEG C of setting value, unit switches to heat supplying process again.
A kind of injection enthalpy-increasing air source heat pump, the system include rotator type air injection enthalpy-increasing compressor 50, and four-way changes
To valve 3, indoor heat exchanger 4, first throttle device 35, second throttling device 36, outdoor heat exchanger 12, gas-liquid separator 6, it is special
Sign is, the system also includes economizer 34, economizer 34 by rotator type air injection enthalpy-increasing compressor 50, high pressure coil pipe 39, in
Platen pipe 40, insulation material 41 and shell body 42 form, exhaust outlet and the four-way reversing valve 3 of rotator type air injection enthalpy-increasing compressor 50
First through hole connection, the second through hole of four-way reversing valve 3 connects with the entrance point of indoor heat exchanger 4, and indoor heat exchanger 4 goes out
Mouthful end simultaneously with the entrance point of high pressure coil pipe 39 with and the entrance point of first throttle device 35 connect, the entrance point of middle platen pipe 40
Connected with the port of export of first throttle device 35, the port of export of middle platen pipe 40 and the jet of rotator type air injection enthalpy-increasing compressor 50
Mouth connection, the port of export of high pressure coil pipe 39 connect with the entrance point of second throttling device 36, and high pressure coil pipe 39 is placed in middle platen pipe
40 inside composition sleeve structure, middle platen pipe 40 are wrapped in the outer wall of rotator type air injection enthalpy-increasing compressor 50 and are adjacent to therewith,
The outer wall of rotator type air injection enthalpy-increasing compressor 50 is set to be covered by middle platen pipe 40 as far as possible, shell body 42 and the middle pressure of economizer 34
Connected between coil pipe 40 filled with insulation material 41, the port of export of second throttling device 36 with the entrance point of outdoor heat exchanger 12, room
The port of export of external heat exchanger 12 connects with the third through-hole of four-way reversing valve 3, the fourth hole of four-way reversing valve 3 and gas-liquid separation
The arrival end connection of device 6, the port of export of gas-liquid separator 6 connect with the air entry of rotator type air injection enthalpy-increasing compressor 50.It is described
Economizer 34 is made up of rotator type air injection enthalpy-increasing compressor 50, high pressure coil pipe 39, inner casing 44, insulation material 45 and shell 46, interior
Contain high pressure coil pipe 39 and rotator type air injection enthalpy-increasing compressor 50 in shell 44, high pressure coil pipe 39 is wrapped in rotator type air injection enthalpy-increasing pressure
The outer wall of contracting machine 50 and be not adjacent to therewith, leave space therebetween, inner casing 44 and rotator type air injection enthalpy-increasing compressor 50 and
Increase simultaneously with rotator type jet filled with the refrigerant with same model in high pressure coil pipe 39, the refrigerant between high pressure coil pipe 39
The puff prot of enthalpy compressor 50 connects with the port of export of communicating pipe 43, the port of export of first throttle device 35 and entering for communicating pipe 43
Mouth end connection, filled with insulation material 45 between inner casing 44 and shell 46.
Its advantage is as follows：
（1）The present invention is very low in environment temperature（As being less than -20 DEG C）Shi Yiran can be with stable operation, while can also improve heating
Amount, the Energy Efficiency Ratio of system are high；
（2）The heat that thermal source on jet branch road of the present invention stores using system itself, heat, accumulation of heat are provided without the external world
Device storage Exotherm Time is short, and required volume is small, is easy to combine with existing unit, and production and processing is convenient, and cost is low；
（3）Present invention indoor temperature in defrosting hardly declines, and comfortableness improves, and four-way valve does not commutate, and system is reliable
Property improve.
Brief description of the drawings
Fig. 1 is the injection enthalpy-increasing air source heat pump structural representation of the embodiment of the present invention 1；
Fig. 2 is the injection enthalpy-increasing air source heat pump structural representation of the embodiment of the present invention 2；
Fig. 3 is the injection enthalpy-increasing air source heat pump structural representation of the embodiment of the present invention 3；
Fig. 4 is the injection enthalpy-increasing air source heat pump structural representation of the embodiment of the present invention 4；
Fig. 5 is the injection enthalpy-increasing air source heat pump structural representation of the embodiment of the present invention 5.
Embodiment
Reference picture 1, a kind of injection enthalpy-increasing air source heat pump of embodiment 1, the system are compressed including air injection enthalpy-increasing
Machine 1, four-way reversing valve 3, indoor heat exchanger 4, gas-liquid separator 6, the first electric expansion valve 8, the second electric expansion valve 11, outdoor
Heat exchanger 12, it is characterised in that the system also includes storage heater 2, the first magnetic valve 5, the first pipeline 14, the second pipeline 15,
5th pipeline 18, the 6th pipeline 19, the storage heater 2 is interior to contain air injection enthalpy-increasing compressor 1, the first coil pipe 20, the second coil pipe 21
And charge and discharge has phase change heat storage material, the port of export of the first coil pipe 20 connects with the puff prot of air injection enthalpy-increasing compressor 1, air injection enthalpy-increasing
The exhaust outlet of compressor 1 connects with the first through hole of four-way reversing valve 3, the second through hole and the indoor heat exchanger 4 of four-way reversing valve 3
Entrance point connection, the port of export of indoor heat exchanger 4 simultaneously with the entrance point of the first pipeline 14 and the entrance point of the second pipeline 15
Connection, the port of export of the first pipeline 14 connect with the entrance point of the second coil pipe 21, and the first magnetic valve 5 is arranged on the first pipeline 14
On, the port of export of the second coil pipe 21 connects with the entrance point of the 5th pipeline 18, the port of export and outdoor heat exchanger of the 5th pipeline 18
12 entrance point connection, the second electric expansion valve 11 are arranged on the 5th pipeline 18, the port of export and the first disk of the second pipeline 15
The entrance point connection of pipe 20, the first electric expansion valve 8 is arranged on the second pipeline 15, the third through-hole of four-way reversing valve 3 and the
The entrance point connection of six pipelines 19, the port of export of the 6th pipeline 19 connect with the port of export of outdoor heat exchanger 12, four-way reversing valve 3
Fourth hole connected with the entrance point of gas-liquid separator 6, the port of export of gas-liquid separator 6 and entering for air injection enthalpy-increasing compressor 1
Gas port connects.
A kind of injection enthalpy-increasing air source heat pump provided according to Fig. 1, control method during heating operation are as follows：
Control method during the system heating is as follows:
a）When outside air temperature is higher than the first switching temperature（First switching temperature value between -5 DEG C ~ 0 DEG C）When, the first electricity
Magnet valve 5 is opened, and the first electric expansion valve 8 is closed, and the second electric expansion valve 11 is operating normally.The flow of refrigerant is as follows：From spray
The high-temperature high-pressure refrigerant gas that gas enthalpy-increasing compressor 1 comes out is entered in indoor heat exchanger 4 through four-way reversing valve 3 condenses heat release,
The heat supply to interior is realized, is then entered through the first magnetic valve 5 in storage heater 2, by the second coil pipe 21 in storage heater 2 heat
Amount passes to phase change heat storage material and stored, and enters after becoming the liquid of low-temp low-pressure by the throttling of second throttling device 11 afterwards
After the heat of vaporization of absorption outdoor air becomes gas into evaporator 12, spray is returned to through four-way reversing valve 3, gas-liquid separator 6
The air entry of gas enthalpy-increasing compressor 1；
b）When outside air temperature is in the first switching temperature and the second switching temperature（Second switching temperature -20 DEG C ~ -15 DEG C it
Between value）Between when, the first magnetic valve 5 is opened, and the first electric expansion valve 8 and the second electric expansion valve 11 are operating normally.Refrigeration
The flow of agent is as follows：The high-temperature gas refrigerant come out from the exhaust outlet of air injection enthalpy-increasing compressor 1 enters interior through four-way reversing valve 3
Heat exchanger 4 condenses heat release, realizes the heat supply to interior, and the high-temp liquid refrigerant come out from indoor heat exchanger 4 is divided into two-way, and one
The first magnetic valve of road 5, which enters, to be transferred heat to phase change heat storage material by the second coil pipe 21 in storage heater 2 and stores, it
Low temperature and low pressure liquid is become by the throttling of the second electric expansion valve 11 afterwards, enters the heat that outdoor air is absorbed in outdoor heat exchanger 12
Evaporation becomes to return to the air entry of air injection enthalpy-increasing compressor 1 after gas through four-way reversing valve 3, gas-liquid separator 6；Another way is freezed
Agent becomes low temperature and low pressure liquid after being throttled by the first electric expansion valve 8 and entered in storage heater 2, absorbs phase transformation by the first coil pipe 20
Heat of vaporization in heat-storing material becomes the laggard puff prot to air injection enthalpy-increasing compressor 1 of gas；
c）When outside air temperature is less than second switching temperature, under this precondition, 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 magnetic valve 5 is opened, and the first electronics is swollen
Swollen valve 8 is operating normally, and the blower fan of indoor heat exchanger 4 runs well.The flow of refrigerant is as follows：From the row of air injection enthalpy-increasing compressor 1
The high-temperature gas refrigerant that gas port comes out enters indoor heat exchanger 4 through four-way reversing valve 3 and condenses heat release, realizes the confession to interior
Heat, the high-temp liquid refrigerant come out from indoor heat exchanger 4 are divided into two-way, enter in storage heater 2 lead to through the first magnetic valve 5 all the way
Cross the second coil pipe 21 and transfer heat to phase change heat storage material and store, become low by the throttling of the second electric expansion valve 11 afterwards
Warm low pressure liquid, enter and the heat of vaporization of outdoor air is absorbed in outdoor heat exchanger 12 become after gas through four-way reversing valve 3, gas
Liquid/gas separator 6 returns to the air entry of air injection enthalpy-increasing compressor 1；Another way refrigerant becomes after being throttled by the first electric expansion valve 8
Low temperature and low pressure liquid is entered in storage heater 2, and absorbing the heat of vaporization in phase change heat storage material by the first coil pipe 20 becomes gas
The laggard puff prot to air injection enthalpy-increasing compressor 1.The heat release of process storage heater 2, indoor temperature rise；Set when indoor temperature is higher than
1 DEG C of definite value, i.e., at 22 DEG C, unit starting heat-accumulating process, the first magnetic valve 5 is opened, and the first electric expansion valve 8 is closed, and interior is changed
Hot device（4）Blower fan close, the flow of refrigerant is as follows：The high-temperature gas refrigeration come out from the exhaust outlet of air injection enthalpy-increasing compressor 1
Agent enters in storage heater 2 through four-way reversing valve 3, the magnetic valve 5 of indoor heat exchanger 4 and first and condenses heat release, passes through the second coil pipe 21
Transfer heat to phase change heat storage material to store, become low-temp low-pressure liquid after being throttled afterwards by the second electric expansion valve 11
Body, enters outdoor heat exchanger 12 and absorbs the heat of vaporization of outdoor air and become after gas through four-way reversing valve 3, gas-liquid separator 6
Return to the air entry of air injection enthalpy-increasing compressor 1.The accumulation of heat of process storage heater 2, indoor temperature decline, when indoor temperature is less than setting
1 DEG C of value, i.e., at 20 DEG C, unit switches to heat supplying process again, so far completes a heat supply and accumulation of heat circulation.
The present embodiment need not start air injection enthalpy-increasing branch road when outside air temperature is higher than the first switching temperature, pass through single-stage
Operation can meet heating needs, and storage heater 2 now serves as the effect of subcooler, and the unnecessary heating capacity of unit is stored in into phase
In change heat storage material, the auxiliary thermal source as jet branch road is discharged again until outdoor temperature is less than the first switching temperature,
The transfer of energy so can be achieved, system more saves；When outside air temperature is less than the second switching temperature, due to storage heater
Pressure in 2 is intermediate pressure, and the compression ratio of compressor can substantially reduce so in heat-accumulating process.And in heat supplying process,
Auxiliary thermal source of the storage heater 2 as jet road, because its temperature is high, heat is sufficient, and the matter of jet road refrigerant can be significantly increased
Flow is measured, so as to play a part of cooling exhaust well, makes unit operation stable, while can also improve heating capacity.
Air injection enthalpy-increasing compressor 1 in the present embodiment can also be combined with converter technique, allow unit supplying by frequency conversion
High frequency is run under heat and accumulation of heat operating mode, can not only so greatly improve the heating capacity of unit at low temperature, moreover it is possible to when shortening accumulation of heat
Between, indoor comfortableness is further improved, improves the Energy Efficiency Ratio of system.
The setting of storage heater adds spray air flow in the present embodiment, improves the effect to compressor air-discharging cooling, can
It is applied under -30 DEG C of low temperature environment.
During Defrost operation, four-way reversing valve 3 is commutated, and the first magnetic valve 5 is opened, the first electric expansion valve 8 and indoor heat exchange
The blower fan of device 4 is closed, and the flow of refrigerant is as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1 is through four
Logical reversal valve 3, which enters, condenses heat release in outdoor heat exchanger 12, liberated heat is used to defrost, then by the second electric expansion valve 11
The laggard heat of vaporization that phase change heat storage material is absorbed into storage heater 2 of liquid that throttling becomes low-temp low-pressure becomes after gas through the
One magnetic valve 5, indoor heat exchanger 4, four-way reversing valve 3, gas-liquid separator 6 return to the air entry of air injection enthalpy-increasing compressor 1.
The present embodiment storage heater 2 in defrosting is used as low level heat energy, and the heat of abundance can be provided for defrosting process, is not only removed
White speed is fast, and defrosting is thorough, and system run all right, and indoor temperature declines less, and comfortableness greatly improves.
When the air injection enthalpy-increasing compressor 1 in the present embodiment is the air injection enthalpy-increasing compressor of rotator type, storage heater 2 is gone back simultaneously
Rotor compressor caused used heat in the process of running can be absorbed.
In the present embodiment, the phase transition temperature of phase change heat storage material is between 15-25 DEG C.
In the present embodiment, it can be provided with fin in phase change heat storage material or foam metal is used for augmentation of heat transfer.
It is quite similar with Two-stage Compression because air injection enthalpy-increasing compressor 1 belongs to quasi- Two-stage Compression, therefore the spray in the present embodiment
Gas enthalpy-increasing compressor 1 can be replaced double-stage compressor.
Reference picture 2, a kind of injection enthalpy-increasing air source heat pump of embodiment 2 is in the system-based of embodiment 1, also
Including the 3rd magnetic valve 9, the 4th magnetic valve 10 and the 4th pipeline 17, the 5th pipeline 18 is sequentially provided with from entrance point to the port of export
Three magnetic valves 9 and the second electric expansion valve 11, the entrance point of the 4th pipeline 17 connect with the port of export of indoor heat exchanger 4, and the 4th
Pipeline connection between the port of export of pipeline 17 and the 3rd magnetic valve 9 and the second electric expansion valve 11, the 4th magnetic valve 10 are set
On the 4th pipeline 17.
A kind of injection enthalpy-increasing air source heat pump provided according to Fig. 2, control method of its control method in embodiment 1
On the basis of, the 3rd magnetic valve 9 is opened during heating operation, and the 4th magnetic valve 10 is closed；During refrigerating operaton, the first magnetic valve the 5, the 3rd
The electric expansion valve 8 of magnetic valve 9 and first is closed, and the 4th magnetic valve 10 is opened, and the flow of refrigerant is as follows：Compressed from air injection enthalpy-increasing
The high-temperature high-pressure gas refrigerant that machine 1 comes out enters through four-way reversing valve 3 condenses heat release, liberated heat in outdoor heat exchanger 12
Taken away by outdoor air, then become the liquid of low-temp low-pressure by the throttling of the second electric expansion valve 11, enter through the 4th magnetic valve 10
Into indoor heat exchanger 4, the heat of vaporization of absorption room air returns to after becoming gas through four-way reversing valve 3, gas-liquid separator 6
The air entry of air injection enthalpy-increasing compressor 1.
Reference picture 3, a kind of injection enthalpy-increasing air source heat pump of embodiment 3 is in the system-based of embodiment 2, also
Including the 5th magnetic valve 13, the 6th magnetic valve 22, the 7th magnetic valve 23, the 7th pipeline 24 and the 8th pipeline 25, the 5th magnetic valve
13 are arranged on the 6th pipeline 19, and the entrance point of the 7th pipeline 24 connects with the port of export of the first pipeline 14, the 7th pipeline 24
The port of export is connected with the entrance point of gas-liquid separator 6, and the 6th magnetic valve 22 is arranged on the 7th pipeline 24, and the 8th pipeline 25 enters
Pipeline connection between mouth end and the 4th magnetic valve 10 and the entrance point of the 4th pipeline 17, the port of export and the outdoor of the 8th pipeline 25
The port of export connection of heat exchanger 12, the 7th magnetic valve 23 are arranged on the 8th pipeline 25.
A kind of injection enthalpy-increasing air source heat pump provided according to Fig. 3, control method of its control method in embodiment 2
On the basis of, the 5th magnetic valve 13 is opened during heating operation, and the 6th magnetic valve 22 and the 7th magnetic valve 23 are closed；During refrigerating operaton,
5th magnetic valve 13 is opened, and the 6th magnetic valve 22 and the 7th magnetic valve 23 are closed；During Defrost operation, the electricity of the 3rd magnetic valve the 9, the 6th
The magnetic valve 23 of magnet valve 22 and the 7th is opened, the first electric expansion valve 8, the first magnetic valve 5, the 4th magnetic valve 10 and the 5th magnetic valve
13 close, and the flow of refrigerant is as follows：The high-temperature high-pressure gas refrigerant come out from air injection enthalpy-increasing compressor 1 is through four-way reversing valve
3 enter in indoor heat exchanger 4 and condense heat release, realize the heat supply to interior, the high-temp liquid refrigeration from indoor heat exchanger 4 out
About 45 DEG C of agent temperature, enters in outdoor heat exchanger 12 through the 7th magnetic valve 23 and defrosts, and is then throttled by the second electric expansion valve 11
Entered after becoming the liquid of low-temp low-pressure through the 3rd magnetic valve 9 in storage heater 2, phase change heat storage material is absorbed by the second coil pipe 21
Heat of vaporization become to return to the air entry of air injection enthalpy-increasing compressor 1 after gas through the 6th magnetic valve 22, gas-liquid separator 6.With
Traditional reverse cycle defrosting technology is compared, the low level heat energy in the present embodiment by the use of storage heater 2 as defrosting process, and refrigerant is first
Heat supply defrosts again, may be such that heating load of the unit to interior during defrosting is hardly reduced, room temperature hardly declines, and ensures
Indoor comfort, the reliability of simultaneity factor improve（Four-way reversing valve 3 does not commutate, and mechanical shock is small）.
Reference picture 4, a kind of injection enthalpy-increasing air source heat pump of embodiment 4, the system increase including rotator type jet
Enthalpy compressor 50, four-way reversing valve 3, indoor heat exchanger 4, first throttle device 35, second throttling device 36, outdoor heat exchanger
12, gas-liquid separator 6, it is characterised in that the system also includes economizer 34, and economizer 34 is compressed by rotator type air injection enthalpy-increasing
Machine 50, high pressure coil pipe 39, middle platen pipe 40, insulation material 41 and shell body 42 form, rotator type air injection enthalpy-increasing compressor 50
Exhaust outlet connects with the first through hole of four-way reversing valve 3, the second through hole of four-way reversing valve 3 and the entrance point of indoor heat exchanger 4
Connection, the port of export of indoor heat exchanger 4 simultaneously with the entrance point of high pressure coil pipe 39 with and first throttle device 35 entrance point company
Logical, the entrance point of middle platen pipe 40 connects with the port of export of first throttle device 35, the port of export and rotator type of middle platen pipe 40
The puff prot connection of air injection enthalpy-increasing compressor 50, the port of export of high pressure coil pipe 39 connect with the entrance point of second throttling device 36,
High pressure coil pipe 39 is placed in the inside composition sleeve structure of middle platen pipe 40, and middle platen pipe 40 is wrapped in the compression of rotator type air injection enthalpy-increasing
The outer wall of machine 50 is simultaneously adjacent to therewith, the outer wall of rotator type air injection enthalpy-increasing compressor 50 is covered by middle platen pipe 40 as far as possible, warp
Changed between the shell body 42 and middle platen pipe 40 of Ji device 34 filled with insulation material 41, the port of export and the outdoor of second throttling device 36
The entrance point connection of hot device 12, the port of export of outdoor heat exchanger 12 connect with the third through-hole of four-way reversing valve 3, four-way reversing valve
3 fourth hole connects with the arrival end of gas-liquid separator 6, and the port of export and the rotator type air injection enthalpy-increasing of gas-liquid separator 6 compress
The air entry connection of machine 50.In the present embodiment, the refrigerant in middle platen pipe 40 can not only absorb to freeze in high pressure coil pipe 39
The heat of agent, the caused used heat in the process of running of rotator type air injection enthalpy-increasing compressor 1 can also be absorbed, so as to greatly increase
The mass flow of jet road refrigerant, and then increase the heating capacity of unit.
Reference picture 5, a kind of injection enthalpy-increasing air source heat pump of embodiment 5 compared with Example 4, only economizer 34
Structure is different, and economizer 34 described in the present embodiment is by rotator type air injection enthalpy-increasing compressor 50, high pressure coil pipe 39, inner casing 44, insulation
Material 45 and shell 46 are formed, and high pressure coil pipe 39 and rotator type air injection enthalpy-increasing compressor 50, high pressure coil pipe 39 are contained in inner casing 44
It is wrapped in the outer wall of rotator type air injection enthalpy-increasing compressor 50 and is not adjacent to therewith, leaves space therebetween, inner casing 44 is with turning
Filled with the refrigerant with same model in high pressure coil pipe 39, the system between minor air injection enthalpy-increasing compressor 50 and high pressure coil pipe 39
Cryogen connects with the puff prot and the port of export of communicating pipe 43 of rotator type air injection enthalpy-increasing compressor 50 simultaneously, first throttle device 35
The port of export connected with the entrance point of communicating pipe 43, filled with insulation material 45 between inner casing 44 and shell 46.In the present embodiment, warp
The heat and rotator type air injection enthalpy-increasing compressor 50 of the high temperature liquid refrigerant of refrigerant suction high pressure coil pipe 39 in Ji device 34
Caused used heat evaporation is sucked after becoming gas by the puff prot of rotator type air injection enthalpy-increasing compressor 50 in the process of running.
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 (7)
1. a kind of injection enthalpy-increasing air source heat pump, the system includes air injection enthalpy-increasing compressor（1）, four-way reversing valve（3）、
Indoor heat exchanger（4）, gas-liquid separator（6）, the first electric expansion valve（8）, the second electric expansion valve（11）, outdoor heat exchanger
（12）, it is characterised in that also including storage heater（2）, the first magnetic valve（5）, the first pipeline（14）, the second pipeline（15）, the 5th
Pipeline（18）, the 6th pipeline（19）, the storage heater（2）It is interior to contain air injection enthalpy-increasing compressor（1）, the first coil pipe（20）, second
Coil pipe（21）And charge and discharge has phase change heat storage material, the first coil pipe（20）The port of export and air injection enthalpy-increasing compressor（1）Puff prot
Connection, air injection enthalpy-increasing compressor（1）Exhaust outlet and four-way reversing valve（3）First through hole connection, four-way reversing valve（3）
Two through holes and indoor heat exchanger（4）Entrance point connection, indoor heat exchanger（4）The port of export simultaneously with the first pipeline（14）Enter
Mouth end and the second pipeline（15）Entrance point connection, the first pipeline（14）The port of export and the second coil pipe（21）Entrance point connect
It is logical, the first magnetic valve（5）It is arranged on the first pipeline（14）On, the second coil pipe（21）The port of export and the 5th pipeline（18）Import
End connection, the 5th pipeline（18）The port of export and outdoor heat exchanger（12）Entrance point connection, the second electric expansion valve（11）If
Put in the 5th pipeline（18）On, the second pipeline（15）The port of export and the first coil pipe（20）Entrance point connection, the first electronics is swollen
Swollen valve（8）It is arranged on the second pipeline（15）On, four-way reversing valve（3）Third through-hole and the 6th pipeline（19）Entrance point connect
It is logical, the 6th pipeline（19）The port of export and outdoor heat exchanger（12）The port of export connection, four-way reversing valve（3）Fourth hole with
Gas-liquid separator（6）Entrance point connection, gas-liquid separator（6）The port of export and air injection enthalpy-increasing compressor（1）Air inlet connect
It is logical.
A kind of 2. injection enthalpy-increasing air source heat pump according to claim 1, it is characterised in that the storage heater（2）
The phase transition temperature of middle phase change heat storage material is between 15-25 DEG C.
3. a kind of injection enthalpy-increasing air source heat pump according to claim 1, it is characterised in that the system also includes
3rd magnetic valve（9）, the 4th magnetic valve（10）With the 4th pipeline（17）, the 5th pipeline（18）Set successively from entrance point to the port of export
There is the 3rd magnetic valve（9）With the second electric expansion valve（11）, the 4th pipeline（17）Entrance point and indoor heat exchanger（4）Outlet
End connection, the 4th pipeline（17）The port of export and the 3rd magnetic valve（9）With the second electric expansion valve（11）Between pipeline connection,
4th magnetic valve（10）It is arranged on the 4th pipeline（17）On.
4. a kind of injection enthalpy-increasing air source heat pump according to claim 1, it is characterised in that the system also includes
5th magnetic valve（13）, the 6th magnetic valve（22）, the 7th magnetic valve（23）, the 7th pipeline（24）With the 8th pipeline（25）, the 5th
Magnetic valve（13）It is arranged on the 6th pipeline（19）On, the 7th pipeline（24）Entrance point and the first pipeline（14）The port of export connect
It is logical, the 7th pipeline（24）The port of export and gas-liquid separator（6）Entrance point connection, the 6th magnetic valve（22）It is arranged on the 7th pipe
Road（24）On, the 8th pipeline（25）Entrance point and the 4th magnetic valve（10）With the 4th pipeline（17）Entrance point between pipeline
Connection, the 8th pipeline（25）The port of export and outdoor heat exchanger（12）The port of export connection, the 7th magnetic valve（23）It is arranged on
Eight pipelines（25）On.
5. a kind of injection enthalpy-increasing air source heat pump according to claim 1, it is characterised in that during the system heating
Control method it is as follows:
a）When outside air temperature is higher than the first switching temperature（First switching temperature value between -5 DEG C ~ 0 DEG C）When, the first electricity
Magnet valve（5）Open, the first electric expansion valve（8）Close, the second electric expansion valve（11）Regular event；
b）When outside air temperature is in the first switching temperature and the second switching temperature（Second switching temperature -20 DEG C ~ -15 DEG C it
Between value）Between when, the first magnetic valve（5）Open, the first electric expansion valve（8）With the second electric expansion valve（11）It is normal dynamic
Make；
When outside air temperature is less than second switching temperature, under this precondition, when indoor temperature is less than setting
During 1 DEG C of value, unit starting heat supplying process, the first magnetic valve（5）Open, the first electric expansion valve（8）Regular event, indoor heat exchange
Device（4）Blower fan run well；The process storage heater（2）Heat release, indoor temperature rise；When indoor temperature is higher than 1 DEG C of setting value
When, unit starting heat-accumulating process, the first magnetic valve（5）Open, the first electric expansion valve（8）Close, indoor heat exchanger（4）Wind
Office closes, the process storage heater（2）Accumulation of heat, indoor temperature decline, and when indoor temperature is less than 1 DEG C of setting value, unit switches again
For heat supplying process.
6. a kind of injection enthalpy-increasing air source heat pump, the system includes rotator type air injection enthalpy-increasing compressor（50）, four-way changes
To valve（3）, indoor heat exchanger（4）, first throttle device（35）, second throttling device（36）, outdoor heat exchanger（12）, gas-liquid point
From device（6）, it is characterised in that the system also includes economizer（34）, economizer（34）By rotator type air injection enthalpy-increasing compressor
（50）, high pressure coil pipe（39）, middle platen pipe（40）, insulation material（41）And shell body（42）Composition, rotator type air injection enthalpy-increasing pressure
Contracting machine（50）Exhaust outlet and four-way reversing valve（3）First through hole connection, four-way reversing valve（3）The second through hole changed with interior
Hot device（4）Entrance point connection, indoor heat exchanger（4）The port of export simultaneously with high pressure coil pipe（39）Entrance point with and first segment
Flow device（35）Entrance point connection, middle platen pipe（40）Entrance point and first throttle device（35）The port of export connection, in
Platen pipe（40）The port of export and rotator type air injection enthalpy-increasing compressor（50）Puff prot connection, high pressure coil pipe（39）The port of export
With second throttling device（36）Entrance point connection, high pressure coil pipe（39）It is placed in middle platen pipe（40）Inside composition sleeve pipe knot
Structure, middle platen pipe（40）It is wrapped in rotator type air injection enthalpy-increasing compressor（50）Outer wall and be adjacent to therewith, spray rotator type as far as possible
Gas enthalpy-increasing compressor（50）Outer wall by middle platen pipe（40）Covered, economizer（34）Shell body（42）With middle platen pipe
（40）Between filled with insulation material（41）, second throttling device（36）The port of export and outdoor heat exchanger（12）Entrance point connect
It is logical, outdoor heat exchanger（12）The port of export and four-way reversing valve（3) third through-hole connection, four-way reversing valve（3) four-way
Hole and gas-liquid separator（6）Arrival end connection, gas-liquid separator（6）The port of export and rotator type air injection enthalpy-increasing compressor（50）
Air entry connection.
A kind of 7. injection enthalpy-increasing air source heat pump according to claim 6, it is characterised in that the economizer（34）
By rotator type air injection enthalpy-increasing compressor（50）, high pressure coil pipe（39）, inner casing（44）, insulation material（45）And shell（46）Composition,
Inner casing（44）In contain high pressure coil pipe（39）With rotator type air injection enthalpy-increasing compressor（50）, high pressure coil pipe（39）It is wrapped in rotator type
Air injection enthalpy-increasing compressor（50）Outer wall and be not adjacent to therewith, leave space, inner casing therebetween（44）With rotator type jet
Enthalpy-increasing compressor（50）And high pressure coil pipe（39）Between filled with high pressure coil pipe（39）The refrigerant of middle same model, the refrigeration
Agent simultaneously with rotator type air injection enthalpy-increasing compressor（50）Puff prot and communicating pipe（43）The port of export connection, first throttle device
（35）The port of export and communicating pipe（43）Entrance point connection, inner casing（44）With shell（46）Between filled with insulation material（45）.
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| WO2020220482A1 (en) * | 2019-04-30 | 2020-11-05 | 广东美的制冷设备有限公司 | Refrigerant system and air conditioner |
| CN114811984A (en) * | 2022-04-29 | 2022-07-29 | 珠海格力电器股份有限公司 | Compressor and compressor air conditioning system |
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