CN106524591A - Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit - Google Patents
Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit Download PDFInfo
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- CN106524591A CN106524591A CN201611234091.0A CN201611234091A CN106524591A CN 106524591 A CN106524591 A CN 106524591A CN 201611234091 A CN201611234091 A CN 201611234091A CN 106524591 A CN106524591 A CN 106524591A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 43
- 238000010257 thawing Methods 0.000 title abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011232 storage material Substances 0.000 claims abstract description 10
- 239000003507 refrigerant Substances 0.000 claims description 25
- 238000010079 rubber tapping Methods 0.000 claims description 24
- 238000009825 accumulation Methods 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 12
- 210000004055 fourth ventricle Anatomy 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 17
- 108091006146 Channels Proteins 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- 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
-
- 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
- F25B2400/24—Storage receiver heat
Abstract
The invention discloses a handpiece phase change heat storage defrosting type low-temperature air source heat pump unit comprising a compressor, a reversing assembly, a water side heat exchanger, an air-liquid separator, a first outdoor heat exchanger and a second outdoor heat exchanger. A phase change heat storage device is further arranged on the outer portion of the compressor and comprises a heat storage body shell and a handpiece heat exchange coiler wound in the heat storage body shell. The heat storage body shell is arranged on one side of an air outlet of the compressor in a sleeved manner. The heat storage body shell is charged with phase change heat storage materials. The handpiece heat exchange coiler is wound around the outer side of the compressor and wrapped inside the phase change heat storage materials. According to the handpiece phase change heat storage defrosting type low-temperature air source heat pump unit, defrosting is conducted in a handpiece heat storage manner, an air source heat pump system does not need to fetch heat in the water side heat exchanger during the defrosting circulation, so that fluctuation of the temperature of hot water is small, and the comfort of the heated side is improved; and compared with conventional four-way valve reversing defrosting, the handpiece phase change heat storage defrosting manner has the advantages that the defrosting heat absorption capacity is abundant, and the defrosting time is shortened.
Description
Technical field
The invention belongs to art of refrigeration units, and in particular to a kind of head phase-transition heat-storage frost removal type low-temperature air source heat pump machine
Group.
Background technology
At present, in northern China cold district, still based on fire coal, no matter this heating system exists central heating mode
Energy-saving and environmental protection or secure context are all less than air-cooled heat-pump air-conditioner group.Air-cooled heat-pump air-conditioner group, also known as air source heat pump
Unit, net for air-source heat pump units heating do not have matchmaker's cigarette to discharge, free from environmental pollution, only take heat from air.For what is be concentrated use in
Mainly based on monoblock type net for air-source heat pump units, summer provides air conditioning water, winter for user end to air-cooling heat pump air conditioner
Heating hot water is provided for user end, the heating system for comparing traditional fire coal is apparently more outstanding.
However, the operating ambient temperature scope of common net for air-source heat pump units causes typically between -7 DEG C ~ 43 DEG C
The northern area of very cold, the heat-production functions of existing net for air-source heat pump units substantially can only be used in transition season, and one
Denier enters cold severe winter and cannot almost meet basic heat demand, or even cannot normal startup optimization.Its main original
Because including：Under the operating mode of outdoor low temperature, heating capacity decay is extremely serious；Outdoor coil pipe used solidifying frost and bottom freezing phenomena are serious；
Frequently defrost brings heat loss and compressor band liquid；The operation of compressor high pressure ratio causes excessive discharge temperature etc..
Just because of the presence of the problems referred to above, net for air-source heat pump units is caused although to compare traditional coal-fired heating system more
Supernumerary segment energy and environmental protection, still it is difficult in northern marketing and application.So need that exploitation is a kind of can in the winter of severe cold
By running and the low-temperature air source heat pump unit that effectively heats is come the heating system based on fire coal that replaces northern China traditional,
To realize environmental conservation and energy-saving purpose.
The content of the invention
Goal of the invention：Present invention aim at being directed to the deficiencies in the prior art, there is provided one kind can be in outdoor worst cold case
Lower reliability service simultaneously possesses the head phase-transition heat-storage frost removal type low-temperature air source heat pump unit of good heating effect.
Technical scheme：Head phase-transition heat-storage frost removal type low-temperature air source heat pump unit of the present invention, including compressor, changes
To component, and water-side heat, gas-liquid separator, the first outdoor heat exchanger and the second Room being sequentially communicated by connecting line
External heat exchanger；The commutation component is four-way change-over valve, first valve port and the second valve port of the four-way change-over valve and the 4th valve
Mouthful one of connection, the 3rd valve port and the second valve port and the 4th valve port another connect, for changing the stream of cold-producing medium
To；
The outside of the compressor is additionally provided with phase transition heat accumulation unit, and the phase transition heat accumulation unit includes accumulation of heat body case and spirals
In the head heat exchange coil of the heat storage inside the shell, the heat storage shell is set in the air vent side of the compressor,
The heat storage is envelope filled to be marked with phase change heat storage material, and the head heat exchange coil is wrapped in the outside of the compressor, and
Wrapped up by the phase change heat storage material；
The outlet of the head heat exchange coil is connected with the gas feed of gas-liquid separator by first collateral branch's pipeline, described
The first electromagnetic valve is provided with first collateral branch's pipeline, controls the break-make of first collateral branch pipeline；
The import of the head heat exchange coil pass through second collateral branch's pipeline and the first outdoor heat exchanger and the second outdoor heat exchanger it
Between connecting line be connected, be provided with the second electromagnetic valve on second collateral branch pipeline, control second collateral branch pipeline
Break-make.
Further preferably technical scheme is that the compressor has gas returning port, air vent to the present invention；
The water-side heat includes the water inlet and water out for connecting the water-side heat water flow passage, and connects the water
The refrigerant gas interface and refrigerant liquid interface of side heat exchanger refrigerant runner, the water in the water flow passage and the refrigeration
Cold-producing medium in agent runner is exchanged heat；
The gas-liquid separator has the first liquid interface and second liquid interface of the fluid passage of connection gas-liquid separator, even
The gas feed of the gas passage of ventilation liquid/gas separator and gas outlet；
First outdoor heat exchanger has the outdoor interface of first for being connected and second Room external tapping, second outdoor heat exchange
Utensil has the outdoor interface of the 3rd for being connected and fourth ventricle external tapping；
First valve port of the four-way change-over valve is connected with the air vent of compressor, and the 3rd valve port is entered with the gas of gas-liquid separator
Mouth connection, the gas outlet of the gas-liquid separator are connected with the gas returning port of the compressor；The second of the four-way change-over valve
Valve port is connected with the refrigerant gas interface of water-side heat, refrigerant liquid interface and the gas-liquid separation of water-side heat
The first liquid interface connection of device, the fourth ventricle of the second liquid interface of the gas-liquid separator and second outdoor heat exchanger
External tapping connects, the 3rd outdoor interface and the second Room external tapping of first outdoor heat exchanger of second outdoor heat exchanger
Connection, the first outdoor interface of first outdoor heat exchanger are connected with the 4th valve port of the four-way change-over valve；
On pipeline between the first liquid interface of the refrigerant liquid interface and the gas-liquid separator of the water-side heat
The first electric expansion valve is provided with, on the pipeline between the described 3rd outdoor interface and second Room external tapping, the second electronics is provided with
Expansion valve；
The outlet of the head heat exchange coil by the gas feed of first collateral branch's pipeline and the 3rd valve port and gas-liquid separator it
Between connecting line connection；The import of the head heat exchange coil passes through second collateral branch's pipeline and the 3rd outdoor interface and second Room
Pipeline connection between external tapping.
Preferably, gas supplementing opening, the described 3rd outdoor interface and the second Room external tapping is additionally provided with the compressor
Between connecting line on be additionally provided with economizer, the economizer has four interfaces, the respectively first economic interface, second
Economic interface, the 3rd economic interface and the 4th economic interface, the wherein first economic interface, the second economic interface are connect with the 3rd outdoor
Mouth is connected with the connecting line between the second Room external tapping；3rd economic interface by the 3rd collateral branch's pipeline and economizer and
Connecting line connection between second outdoor heat exchanger, is provided with the 3rd electric expansion valve on the 3rd collateral branch's pipeline；4th
Economic interface is connected with the gas supplementing opening of the compressor by QI invigorating pipeline, arranges the oriented gas supplementing opening on the QI invigorating pipeline
The check valve of direction opening.
Preferably, set on the connecting line between the air vent of the compressor and the first valve port of the four-way change-over valve
It is equipped with back pressure transducer and exhaust gas temperature sensor；The gas returning port of the compressor is gone out with the gas of the gas-liquid separator
Back pressure sensor and suction temperature sensor are provided with connecting line between mouthful；The gas supplementing opening of the compressor and institute
State superfeed pressure sensor and QI invigorating temperature sensor is provided with the QI invigorating pipeline between the 4th economic mouth of economizer；It is described
The bottom of the first outdoor heat exchanger is provided with the first temperature sensor, and top is provided with second temperature sensor.
Preferably, oil groove electric heater is additionally provided with the compressor.
Preferably, second outdoor heat exchanger is located at the bottom of first outdoor heat exchanger, two outdoor heat exchangers
Outer fin is structure as a whole, and shares an outdoor fan.
Preferably, between the fourth ventricle external tapping of the second liquid interface and the second outdoor heat exchanger of the gas-liquid separator
Connecting line on be additionally provided with two-way device for drying and filtering.
Preferably, the water inlet of the water-side heat is connected with the water inlet end of source pump by inlet channel, water outlet
Mouth is connected with the water side of source pump by outlet conduit.
Preferably, water filter was installed on the inlet channel, between the inlet channel and the outlet conduit
It is additionally provided with hydraulic pressure difference controller.
Preferably, the compressor is the vortex with intermediate fill gas mouth or screw compressor；The water-side heat
For plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger one of which；First outdoor heat exchanger, the second outdoor are changed
Hot device is coil exchanger.
Beneficial effect：（1）The present invention is defrosted using head heat storage type, is set outside the air vent side of compressor
Phase transition heat accumulation unit is put, during Defrost operation, is exchanged heat by phase change heat storage material accumulation of heat and with the head in the outside for being wrapped in compressor
Coil pipe is exchanged heat, and head heat exchange coil passes through collateral branch's pipeline and electromagnetic valve again and forms following for cold-producing medium with the pipeline of source pump
Circulation road so that air source heat pump system need not take heat in water-side heat when defrosting is circulated, therefore hot water temperature's fluctuation is little,
The comfortableness of heating side is improve, compared with the commutation defrosting of conventional cross valve, defrosting caloric receptivity is abundant, and defrosting time shortens；When
After system is converted to heating mode, as compressor has wrapped up heat storage, water-side heat heat exchange surface temperature is higher, can make
The temperature of heating side is comparatively fast raised；
（2）The present invention has merged the hot pump in low temp technologies such as economizer Gas-supplying enthalpy-increasing, extraction cycle, frost protection coil pipe simultaneously, thoroughly
Solve under net for air-source heat pump units defrosting operating condition heating capacity to decay compressor under serious, outdoor coil pipe used frost, low ambient temperature
The difficult problems such as the low poor reliability of high pressure ratio operational efficiency, are conducive to net for air-source heat pump units in the popularization and application of low temperature heating occasion,
Haze is administered for the northern area of China a kind of effective technical scheme for substituting coal heating is provided；
（3）Be provided with the gas exhaust piping of compressor, return line and QI invigorating pipeline in the present invention pressure transducer and
Temperature sensor, is provided with temperature sensor on outdoor heat exchanger, and these Perceived controls answer components and parts to participate in system control and protect
Shield, realizes effective control and the reliability service of system；
（4）Oil groove electric heater on the compressor in the present invention, needs to be powered pre- after the power-off of unit long-time is shut down before starting shooting again
Refrigeration oil in thermocompressor, during unit holding state, oil heater must be powered, and when being prevented from shutting down, in refrigeration oil, dissolving is big
Quantity of fluid cold-producing medium, it is to avoid hydraulic compression after starting shooting again.
Description of the drawings
Fig. 1 is the structural representation of net for air-source heat pump units of the present invention；
Wherein, 1- compressors, 2- four-way change-over valves, 3- water-side heats, the first electric expansion valves of 4-, 5- gas-liquid separators, 6-
Two-way device for drying and filtering, the second outdoor heat exchangers of 7-, 8- economizers, the second electric expansion valves of 9-, the first outdoor heat exchangers of 10-,
11- blower fans, the first temperature sensors of 12-, 13 second temperature sensors, the 3rd electric expansion valves of 14-, 15- check valves, 16- store
Hot body case, 17- head heat exchange coils, 18- phase change heat storage materials, 19- oil groove electric heaters, 20- back pressure transducers,
21- exhaust gas temperature sensors, 22- back pressure sensors, 23- suction temperature sensors, 24- inflow temperature sensors, 25- water
Filter, 26- hydraulic pressure difference controllers, 27- leaving water temperature sensors, the first electromagnetic valves of 28-, the second electromagnetic valves of 29-, 30- QI invigorating
Pressure transducer, 31- QI invigorating temperature sensors, A- gas returning ports, B- air vents, the first valve ports of C1-, the second valve ports of C2-, C3-
The 4th valve port of three valve ports, C4-, D1- refrigerant gas interfaces, D2- refrigerant liquid interfaces, E1- first liquid interfaces, E2-
The outdoor interface of two fluidic interfaces, F1- fourth ventricle external tappings, F2- the 3rd, the first economic interfaces of G1-, the second economic interfaces of G2-,
The outdoor interface of the 3rd economic interfaces of G3-, the 4th economic interfaces of G4-, H1- second Room external tappings, H2- first, J1- gas feeds,
J2- gas outlets, the 3rd collateral branch's pipeline junction points of K-, M- gas supplementing openings, the second collateral branch of N- pipeline junction point, P- head heat exchange coils
Import, the outlet of Q- head heat exchange coils, the junction point of the first collateral branch of R- pipeline, T1- water outs, T2- water inlets.
Specific embodiment
Technical solution of the present invention is described in detail below by accompanying drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment：A kind of head phase-transition heat-storage frost removal type low-temperature air source heat pump unit, commutates including compressor 1, four-way
Valve 2, water-side heat 3, gas-liquid separator 5, the first outdoor heat exchanger 10, economizer 8 and the second outdoor heat exchanger 7.Compressor 1
It is the vortex with intermediate fill gas mouth or screw compressor；Water-side heat 3 is plate type heat exchanger, shell and tube exchanger or set
Pipe heat exchanger one of which；First outdoor heat exchanger 10, the second outdoor heat exchanger 7 are coil exchanger.Second outdoor is changed
Hot device 7 is located at the bottom of the first outdoor heat exchanger 10, and the outer fin of two outdoor heat exchangers is structure as a whole, and share one it is outdoor
Blower fan 11.
As shown in figure 1, the concrete structure of each part is：
Compressor 1 has gas returning port A, air vent B and gas supplementing opening M, is provided with oil groove electric heater 19, compressor 1 on compressor 1
Outside be additionally provided with phase transition heat accumulation unit, phase transition heat accumulation unit includes accumulation of heat body case 16 and spirals in accumulation of heat body case 16
Head heat exchange coil 17, accumulation of heat body case 16 is set in the air vent B sides of compressor 1, is filled with accumulation of heat body case 16
Phase change heat storage material 18, head heat exchange coil 17 are wrapped in the outside of compressor 1, and are wrapped up by phase change heat storage material 18；
Four-way change-over valve 2 has four valve ports, and the first valve port C1 is one of with the second valve port C2 and the 4th valve port C4 to be connected, the
Three valve port C3 and the second valve port C2 and the 4th valve port C4 another connect, and change the flow direction of cold-producing medium.
Water-side heat 3 includes the water inlet T2 and water out T1 for connecting water-side heat water flow passage, and connection water side
The refrigerant gas interface D1 and refrigerant liquid interface D2 of heat exchanger refrigerant runner, the water and refrigerant flow path in water flow passage
Interior cold-producing medium is exchanged heat；The water inlet T2 of water-side heat is connected with the water inlet end of source pump by inlet channel, is gone out
Mouth of a river T1 is connected with the water side of source pump by outlet conduit, is provided with water filter 25 and inflow temperature on inlet channel
Sensor 24, is provided with leaving water temperature sensors 27 on outlet conduit, be provided with hydraulic pressure between inlet channel and outlet conduit
Difference controller 26.
Gas-liquid separator 5 has the first liquid interface E1 and second liquid interface of the fluid passage of connection gas-liquid separator
E2, connects the gas feed J1 and gas outlet J2 of the gas passage of gas-liquid separator.
First outdoor heat exchanger 10 has the first outdoor interface H2 and second Room external tapping H1 being connected, and the first outdoor is changed
The bottom of hot device 10 is provided with the first temperature sensor 12, and top is provided with second temperature sensor 13.Second outdoor heat exchanger 7
With the 3rd outdoor interface F2 and fourth ventricle external tapping F1 being connected.
Economizer 8 has four interfaces, the respectively first economic interface G1, the second economic interface G2, the 3rd economic interface
G3 and the 4th economic interface G4.
The annexation of each part is：
First valve port C1 of four-way change-over valve 2 is connected with the air vent B of compressor 1, is provided with exhaust pressure on this section of connecting line
Force transducer 20 and exhaust gas temperature sensor 21；3rd valve port C3 is connected with the gas feed J1 of gas-liquid separator 5, gas-liquid separation
The gas outlet J2 of device is connected with the gas returning port A of compressor 1, is provided with back pressure sensor 22 and returns on this section of connecting line
Gas temperature sensor 23；Second valve port C2 of four-way change-over valve 2 is connected with the refrigerant gas interface D1 of water-side heat 3, water
The refrigerant liquid interface D2 of side heat exchanger 3 and the first liquid interface E1 of gas-liquid separator 5 pass through the first electric expansion valve 4 and
Connecting line connects, the second liquid interface E2 and fourth ventricle external tapping F1 of gas-liquid separator 5 by two-way device for drying and filtering 6 and
Connecting line connects, the 3rd outdoor interface F2 and second Room external tapping H1 by the first economic interface G1, the second economic interface G2 and
Connecting line connects, and the first outdoor interface H2 is connected with the 4th valve port C4；
The outlet Q of head heat exchange coil pass through first collateral branch's pipeline and the 3rd valve port C3 and gas-liquid separator gas feed J1 it
Between connecting line R points connect；The import P of head heat exchange coil is by second collateral branch's pipeline and second Room external tapping H1 and the
Pipeline between two economic interface G2 is connected in N points；3rd economic interface G3 passes through the 3rd collateral branch's pipeline and the second economic interface
Connecting line between the outdoor interface F2 of G2 and the 3rd is connected in K points, and the 4th economic interface G4 passes through QI invigorating pipeline and compressor
Gas supplementing opening M connection, be provided with superfeed pressure sensor 30 and QI invigorating temperature sensor 31 on QI invigorating pipeline；First collateral branch's pipeline
On be provided with the first electromagnetic valve 28, be provided with the second electromagnetic valve 29 on second collateral branch's pipeline, on the 3rd collateral branch's pipeline, be provided with
Three electric expansion valves 14, arrange the check valve 15 of oriented gas supplementing opening direction opening on QI invigorating pipeline.
The carrying out practically principle of the net for air-source heat pump units of the present embodiment is as follows.
In cooling condition, the first valve port C1 of four-way change-over valve is communicated with the 4th valve port C4, the second valve port C2 and the 3rd
Valve port C3 is communicated, and the first electric expansion valve 4 is throttled according to return-air degree of superheat signal, controls refrigerant flow, the second electronics
Expansion valve 9 is full-gear, and the first electromagnetic valve 28 and the second electromagnetic valve 29 are closed mode, and the 3rd electric expansion valve 14 is fully closed
State, when excessive discharge temperature, the 3rd electric expansion valve 14 is suitably opened according to QI invigorating degree of superheat signal；Cooling condition freezes
Circulate direction of the agent in system is：
B-C1-C4-H2-H1-N-G2-G1-K-F2-F1-E2-E1-D2-D1-C2-C3-R-J1-J2-A-B。
During heating condition, the first valve port C1 and the second valve port C2 of four-way change-over valve are communicated, the 3rd valve port C3 and the 4th valve
Mouthful C4 is communicated, and the first electric expansion valve 4 is full-gear, and the second electric expansion valve 9 is throttled according to return-air degree of superheat signal,
Control refrigerant flow, the first electromagnetic valve 28 and the second electromagnetic valve 29 are closed mode, and the 3rd electric expansion valve 14 is according to QI invigorating
Degree of superheat signal carries out throttling control refrigerant flow；Circulate direction of the heating condition cold-producing medium in system is：
B-C1-C2-D1-D2-E1-E2-F1-F2-K-G1-G2-N-H1-H2 -C4-C3-R-J1-J2-A-B；
Economizer circuit refrigerant flow direction is：K-G3-G4-M-B.
During defrosting operating condition, the first valve port C1 of four-way change-over valve and the 4th valve port C4 is communicated, the second valve port C2 and the 3rd valve
Mouthful C3 is communicated, and the first electric expansion valve 4 is full off state, and the second electric expansion valve 9 is throttled according to return-air degree of superheat signal,
Control refrigerant flow, the first electromagnetic valve 28 and the second electromagnetic valve 29 are open mode, and the 3rd electric expansion valve 14 is fully closed shape
State；Circulate direction of the defrosting operating condition cold-producing medium in system is：
B-C1-C4-H2-H1-N-P-Q-R- J1-J2-A-B。
Return-air degree of superheat signal is determined and is sent by back pressure sensor and suction temperature sensor.
QI invigorating degree of superheat signal is determined and is sent by superfeed pressure sensor and QI invigorating temperature sensor.
Although as described above, having represented and having described the present invention with reference to specific preferred embodiment, which must not be explained
It is to the restriction of itself of the invention.Under the premise of the spirit and scope of the present invention defined without departing from claims, can be right
Various changes can be made in the form and details for which.
Claims (10)
1. a kind of head phase-transition heat-storage frost removal type low-temperature air source heat pump unit, including compressor, commutation component, and passes through to connect
Water-side heat, gas-liquid separator, the first outdoor heat exchanger and the second outdoor heat exchanger that adapter road is sequentially communicated；The commutation
Component is four-way change-over valve, and the first valve port of the four-way change-over valve is one of with the second valve port and the 4th valve port to be connected, institute
Another connects to state the 3rd valve port and the second valve port and the 4th valve port, for changing the flow direction of cold-producing medium；
It is characterized in that：The outside of the compressor is additionally provided with phase transition heat accumulation unit, and the phase transition heat accumulation unit includes accumulation of heat
Body case and spiral in the head heat exchange coil of the heat storage inside the shell, the heat storage shell is set in the compressor
Air vent side, the heat storage is envelope filled to be marked with phase change heat storage material, and the head heat exchange coil is wrapped in the compression
The outside of machine, and wrapped up by the phase change heat storage material；
The outlet of the head heat exchange coil is connected with the gas feed of gas-liquid separator by first collateral branch's pipeline, described
The first electromagnetic valve is provided with first collateral branch's pipeline, controls the break-make of first collateral branch pipeline；
The import of the head heat exchange coil pass through second collateral branch's pipeline and the first outdoor heat exchanger and the second outdoor heat exchanger it
Between connecting line be connected, be provided with the second electromagnetic valve on second collateral branch pipeline, control second collateral branch pipeline
Break-make.
2. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 1, it is characterised in that：
The compressor has gas returning port, air vent；
The water-side heat includes the water inlet and water out for connecting the water-side heat water flow passage, and connects the water
The refrigerant gas interface and refrigerant liquid interface of side heat exchanger refrigerant runner, the water in the water flow passage and the refrigeration
Cold-producing medium in agent runner is exchanged heat；
The gas-liquid separator has the first liquid interface and second liquid interface of the fluid passage of connection gas-liquid separator, even
The gas feed of the gas passage of ventilation liquid/gas separator and gas outlet；
First outdoor heat exchanger has the outdoor interface of first for being connected and second Room external tapping, second outdoor heat exchange
Utensil has the outdoor interface of the 3rd for being connected and fourth ventricle external tapping；
First valve port of the four-way change-over valve is connected with the air vent of compressor, and the 3rd valve port is entered with the gas of gas-liquid separator
Mouth connection, the gas outlet of the gas-liquid separator are connected with the gas returning port of the compressor；The second of the four-way change-over valve
Valve port is connected with the refrigerant gas interface of water-side heat, refrigerant liquid interface and the gas-liquid separation of water-side heat
The first liquid interface connection of device, the fourth ventricle of the second liquid interface of the gas-liquid separator and second outdoor heat exchanger
External tapping connects, the 3rd outdoor interface and the second Room external tapping of first outdoor heat exchanger of second outdoor heat exchanger
Connection, the first outdoor interface of first outdoor heat exchanger are connected with the 4th valve port of the four-way change-over valve；
On pipeline between the first liquid interface of the refrigerant liquid interface and the gas-liquid separator of the water-side heat
The first electric expansion valve is provided with, on the pipeline between the described 3rd outdoor interface and second Room external tapping, the second electronics is provided with
Expansion valve；
The outlet of the head heat exchange coil by the gas feed of first collateral branch's pipeline and the 3rd valve port and gas-liquid separator it
Between connecting line connection；The import of the head heat exchange coil passes through second collateral branch's pipeline and the 3rd outdoor interface and second Room
Pipeline connection between external tapping.
3. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 2, it is characterised in that：It is described
Gas supplementing opening is additionally provided with compressor, is also set on the connecting line between the described 3rd outdoor interface and the second Room external tapping
Economizer is equipped with, the economizer has four interfaces, and the respectively first economic interface, the second economic interface, the 3rd economy connect
Mouth and the 4th economic interface, the wherein first economic interface, the second economic interface are external with the second Room with the 3rd outdoor interface
Connecting line connection between mouthful；3rd economic interface passes through between the 3rd collateral branch's pipeline and economizer and the second outdoor heat exchanger
Connecting line connection, be provided with the 3rd electric expansion valve on the 3rd collateral branch's pipeline；4th economic interface passes through blowdown pipe
Road is connected with the gas supplementing opening of the compressor, arranges the check valve of oriented gas supplementing opening direction opening on the QI invigorating pipeline.
4. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 3, it is characterised in that：It is described
Back pressure transducer is provided with connecting line between the air vent of compressor and the first valve port of the four-way change-over valve
And exhaust gas temperature sensor；On connecting line between the gas outlet of the gas returning port of the compressor and the gas-liquid separator
It is provided with back pressure sensor and suction temperature sensor；The gas supplementing opening of the compressor is economical with the 4th of the economizer the
Superfeed pressure sensor and QI invigorating temperature sensor are provided with QI invigorating pipeline between mouthful；Under first outdoor heat exchanger
Portion is provided with the first temperature sensor, and top is provided with second temperature sensor.
5. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 2, it is characterised in that：It is described
Oil groove electric heater is additionally provided with compressor.
6. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 2, it is characterised in that：It is described
Second outdoor heat exchanger is located at the bottom of first outdoor heat exchanger, and the outer fin of two outdoor heat exchangers is structure as a whole, and
Share an outdoor fan.
7. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 2, it is characterised in that：It is described
Also set up on connecting line between the fourth ventricle external tapping of the second liquid interface and the second outdoor heat exchanger of gas-liquid separator
There is two-way device for drying and filtering.
8. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 2, it is characterised in that：It is described
The water inlet of water-side heat is connected with the water inlet end of source pump by inlet channel, and outlet passes through outlet conduit and heat pump
The water side connection of unit.
9. head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 8, it is characterised in that：It is described
Water filter was installed on inlet channel, differential water pressures control was additionally provided between the inlet channel and the outlet conduit
Device.
10. the head phase-transition heat-storage frost removal type low-temperature air source heat pump unit according to claim 1 ~ 9 any one, which is special
Levy and be：The compressor is the vortex with intermediate fill gas mouth or screw compressor；The water-side heat is changed for board-like
Hot device, shell and tube exchanger or double pipe heat exchanger one of which；First outdoor heat exchanger, the second outdoor heat exchanger are disk
Pipe heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234091.0A CN106524591A (en) | 2016-12-28 | 2016-12-28 | Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234091.0A CN106524591A (en) | 2016-12-28 | 2016-12-28 | Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit |
Publications (1)
| Publication Number | Publication Date |
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| CN106524591A true CN106524591A (en) | 2017-03-22 |
Family
ID=58339093
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234091.0A Pending CN106524591A (en) | 2016-12-28 | 2016-12-28 | Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit |
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| CN (1) | CN106524591A (en) |
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| CN107436055A (en) * | 2017-06-28 | 2017-12-05 | 内蒙古博特科技有限责任公司 | A kind of solar cross-season energy storage combined supply system |
| CN108344216A (en) * | 2018-02-08 | 2018-07-31 | 广东高而美制冷设备有限公司 | Refrigerant reservoir and Teat pump boiler |
| CN108375235A (en) * | 2018-01-25 | 2018-08-07 | 珠海格力电器股份有限公司 | Air source heat pump system and control method |
| CN108759167A (en) * | 2018-04-22 | 2018-11-06 | 北京工业大学 | The reinforcing for bypassing tonifying Qi joint compressor housing accumulation of heat heats heat pump system |
| CN114251745A (en) * | 2021-12-10 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioning system and air conditioning control method |
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Application publication date: 20170322 |