CN106288565A - Air-conditioning does not shut down defrosting system and method and air-conditioning - Google Patents
Air-conditioning does not shut down defrosting system and method and air-conditioning Download PDFInfo
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- CN106288565A CN106288565A CN201610933228.5A CN201610933228A CN106288565A CN 106288565 A CN106288565 A CN 106288565A CN 201610933228 A CN201610933228 A CN 201610933228A CN 106288565 A CN106288565 A CN 106288565A
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- defrosting
- air
- exhaust piping
- gas exhaust
- heat exchanger
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to air-conditioning field of heat exchange; defrosting system and method and air-conditioning is not shut down particularly to air-conditioning; air-conditioning is not shut down in defrosting system between compressor and indoor heat exchanger by heating gas exhaust piping, heating return line and connect and compose and heat loop, connects and composes defrosting loop by defrosting gas exhaust piping, defrosting return line between compressor and outdoor heat exchanger；Heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting return line both pass through regenerative apparatus.This technique compresses machine to indoor heat exchanger, outdoor heat exchanger heat supply simultaneously, heats simultaneously, defrost is carried out simultaneously.And heating gas exhaust piping, all cross regenerative apparatus to the defrosting gas exhaust piping of outdoor heat exchanger aerofluxus to indoor heat exchanger aerofluxus, the heat distributed can be absorbed by regenerative apparatus, and as heat does not reaches requirement, regenerative apparatus is its heating.It addition, regenerative apparatus also can improve suction temperature to heating return line, defrosting return line heat supply, improve heating effect during defrosting.
Description
Technical field
The present invention relates to air-conditioning field of heat exchange, particularly relate to air-conditioning and do not shut down defrosting system and defrosting side do not shut down by air-conditioning
Method and air-conditioning.
Background technology
Heat pump air conditioner runs heating mode at low ambient temperatures, usually cannot meet the heating capacity demand of interior machine.Separately
Outward, when low temperature environment runs, outdoor unit heat exchanger frosting is serious, and frosting then can strengthen off-premises station windage, causes heat exchanger heat transfer
Coefficient declines thus weakens the heating capacity of heat pump air conditioner further.
Summary of the invention
(1) to solve the technical problem that
It is an object of the invention to provide air-conditioning not shut down defrosting system, air-conditioning and do not shut down Defrost method and air-conditioning, to solve
The problem that the indoor temperature that causes air-conditioner defrosting reduces.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of air-conditioning not shut down defrosting system, comprising: compressor,
Regenerative apparatus, indoor heat exchanger, outdoor heat exchanger；By heating exhaustor between described compressor and described indoor heat exchanger
Road, heat return line and connect and compose and heat loop, by defrosting exhaustor between described compressor and described outdoor heat exchanger
Road, defrosting return line connect and compose defrosting loop；
Described heat gas exhaust piping, described in heat return line, described defrosting gas exhaust piping, described defrosting return line equal
Through described regenerative apparatus.
In certain embodiments, be preferably, described in heat gas exhaust piping and include: from compressor to described indoor heat exchanger
On direction, the aerofluxus main road of series connection forms with heating exhaust branch；Described defrosting gas exhaust piping includes: from compressor to described
On outdoor heat exchanger direction, described aerofluxus main road and the defrosting exhaust branch of series connection form；Aerofluxus main road passes regenerative apparatus.
In certain embodiments, be preferably, described in heat arrange on exhaust branch control aperture the first control valve, described
On defrosting exhaust branch, the second control valve controlling aperture is set.
In certain embodiments, be preferably, described in heat return line and include: from indoor heat exchanger to described compressor
On direction, series connection heats return-air branch road and return-air main road composition；Described defrosting return line includes: from outdoor heat exchanger to
On described compressor direction, defrosting return-air branch road and the return-air main road of series connection form；Described return-air main road fills through described accumulation of heat
Put.
In certain embodiments, it is preferably, described defrosting return-air branch road arranges fluid reservoir.
In certain embodiments, it is preferably, returns from the defrosting of the return air outlet of described outdoor heat exchanger to described fluid reservoir
The 3rd control valve and reducer is set gradually on gas branch road.
In certain embodiments, being preferably, described reducer is throttle capillary tube.
In certain embodiments, preferably, heat described in and the 4th control valve 20 is set on return-air branch road.
In certain embodiments, being preferably, described regenerative apparatus is internal fills phase-change heat-storage material.
In certain embodiments, being preferably, described phase-change heat-storage material includes: count by volume, 20 paraffin: 1 sulfuration is swollen
Swollen graphite.
In certain embodiments, preferably, heat described in and on gas exhaust piping, described defrosting gas exhaust piping, temperature survey is set
Device, arranges heater block in described regenerative apparatus.
In certain embodiments, being preferably, described heater block includes: electrically heated rod and/or resistance wire and/or heat exchange
Pipe.
In certain embodiments, being preferably, described air-conditioning is not shut down defrosting system and is also included: temperature controller, described temperature
Measurement apparatus is all connected with described temperature controller with described heater block.
In certain embodiments, being preferably, described temperature controller is provided with heater block start-up temperature and arranges position and heater block
Overload temperature arranges position.
In certain embodiments, be preferably, described compressor by gas exhaust piping and return line respectively with indoor heat exchange
The non-defrosting of connected composition of device, outdoor heat exchanger heats loop or refrigerating circuit；
Described gas exhaust piping passes described regenerative apparatus, and the return line under heating mode passes described regenerative apparatus.
In certain embodiments, be preferably, the return line under heating mode includes: from described outdoor heat exchanger to institute
That states on compressor series connection heats the first return-air branch road and return-air main road, and described return-air main road passes described regenerative apparatus.
In certain embodiments, be preferably, described gas exhaust piping by four-way change-over valve respectively with indoor heat exchanger or room
External heat exchanger is connected, and constitutes non-defrosting and heats loop or refrigerating circuit.
In certain embodiments, it is preferably, in described the of outdoor heat exchanger return-air outlet to described four-way change-over valve
On one return-air branch road, the 5th control valve is set.
In certain embodiments, being preferably, the return line under refrigeration mode walks around described regenerative apparatus.
In certain embodiments, being preferably, the return line under heating mode arranges the 6th control valve controlling opening and closing, system
Return line under chill formula arranges the 7th control valve controlling opening and closing.
In certain embodiments, it is preferably, described gas exhaust piping arranges delivery temperature measurement apparatus, described regenerative apparatus
Heater block is inside set.
In certain embodiments, being preferably, described heater block includes: electrically heated rod and/or resistance wire and/or heat exchange
Pipe.
In certain embodiments, being preferably, described air-conditioning is not shut down defrosting system and is also included: temperature controller, described aerofluxus
Temperature measuring equipment is all connected with described temperature controller with described heater block.
In certain embodiments, being preferably, described temperature controller is provided with heater block start-up temperature and arranges position and heater block
Overload temperature arranges position.
Present invention also offers a kind of air-conditioning, it includes that defrosting system do not shut down by described air-conditioning.
Present invention also offers a kind of air-conditioning and do not shut down Defrost method, comprising:
Start defrosting mode；
Open and heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting return line；
Respectively enter from exhaust outlet of compressor expellant gas and heat gas exhaust piping, defrosting gas exhaust piping；Heat exhaustor
The heat that road, defrosting gas exhaust piping distribute is absorbed by regenerative apparatus, stores；
Heat after the gas of gas exhaust piping enters back into indoor heat exchanger condensation described in entrance, by heating return line, quilt
After regenerative apparatus heating, return the fluid reservoir of compressor；
Enter after the gas of described defrosting gas exhaust piping enters back into outdoor heat exchanger defrosting, by defrosting return line, quilt
After regenerative apparatus heating, return the fluid reservoir of compressor.
In certain embodiments, being preferably, described air-conditioning is not shut down Defrost method and is also included: heat aerofluxus described in detection
Pipeline, the gas temperature of described defrosting gas exhaust piping；
If described gas temperature is less than defrosting temperature threshold, then start the heater block in regenerative apparatus.
In certain embodiments, being preferably, described air-conditioning is not shut down Defrost method and is also included:
Start heating mode；
Open return line under gas exhaust piping and heating mode, heat described in closedown gas exhaust piping, described in heat muffler
Road, described defrosting gas exhaust piping, described defrosting return line；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is inhaled by regenerative apparatus
Receive, store；
Enter after the gas of described gas exhaust piping enters back into indoor heat exchanger condensation, send into outdoor heat exchanger, change from outdoor
After hot device gas returning port is discharged, return line under heating mode, after being heated by regenerative apparatus, return the fluid reservoir of compressor.
In certain embodiments, being preferably, described air-conditioning is not shut down Defrost method and is also included: gas in detection gas exhaust piping
Temperature；
If gas temperature is less than heating temperature threshold in described gas exhaust piping, then start the heater block in regenerative apparatus.
In certain embodiments, being preferably, described air-conditioning is not shut down Defrost method and is also included:
Start refrigeration mode；
Open return line under gas exhaust piping and refrigeration mode, heat described in closedown gas exhaust piping, described in heat muffler
Return line under road, described defrosting gas exhaust piping, described defrosting return line, heating mode；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is inhaled by regenerative apparatus
Receive, store；
Enter after the gas of described gas exhaust piping enters back into outdoor heat exchanger condensation, send into indoor heat exchanger, change from indoor
After hot device gas returning port is discharged, return line under refrigeration mode, after walking around regenerative apparatus, return the fluid reservoir of compressor.
(3) beneficial effect
The technical scheme that the present invention provides, the problem causing heating effect difference for defrosting at present, compressor is proposed simultaneously
To indoor heat exchanger, outdoor heat exchanger heat supply simultaneously, indoor heat exchanger heats, outdoor heat exchanger defrosting is carried out simultaneously.And, to
Indoor heat exchanger aerofluxus heat gas exhaust piping, to the defrosting gas exhaust piping of outdoor heat exchanger aerofluxus all through regenerative apparatus, its
The heat distributed can be absorbed by regenerative apparatus, if its heat does not reaches requirement, regenerative apparatus can be its heating.The opposing party
Face, regenerative apparatus can also improve suction temperature to heating return line, defrosting return line heat supply, and then in defrosting process
Middle raising heating effect.Thus, it is possible to be greatly promoted product heating capacity at low ambient temperatures, and can realize not shutting down
Defrost, the comfort of lifting Consumer's Experience, thus the competitiveness of great improving product！
Accompanying drawing explanation
Fig. 1 is the structural representation that in one embodiment of the invention, defrosting system do not shut down by air-conditioning；
Fig. 2 is the structural representation of air-conditioning in one embodiment of the invention.
In figure:
1 compressor；
2 compressor liquid storage cans；
3 return-air main roads；
4 aerofluxus main roads；
5 phase change heat storage materials；
6,9,11,12,14,20,22,23,24,25 electric expansion valve；
7 fluid reservoirs；
8 reducers；
10 heater blocks；
13 four-way change-over valves；
15 choke valves；
17 indoor heat exchangers；
18 outdoor heat exchangers；
19 regenerative apparatuses；
21 temperature controllers.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is described in further detail.Following instance
For the present invention is described, but it is not limited to the scope of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " first " "
Two " " the 3rd " " the 4th " is to understand the numbering that explanation product component is carried out, and does not represent any essential distinction." install ",
" be connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or connect integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Heat pump air conditioner problem of heating capacity difference in defrosting operation, present technology provides air-conditioning not in the prior art
Shut down defrosting system, Defrost method and air-conditioning.
By basic engineering, extension design and replacement design, product, method etc. will be described in detail below.
Defrosting system do not shut down by a kind of air-conditioning, as it is shown in figure 1, it is mainly by compressor 1, regenerative apparatus 19, indoor heat exchange
Device 17 and outdoor heat exchanger 18 form.Wherein, by heating gas exhaust piping, heating back between compressor 1 and indoor heat exchanger 17
Air pipe connects and composes and heats loop, by defrosting gas exhaust piping, defrosting return line between compressor 1 and outdoor heat exchanger 18
Connect and compose defrosting loop；That is the high temperature and high pressure gas of compressor 1 is partially into indoor heat exchanger 17 and heats, portion
Entrance outdoor heat exchanger 18 is divided to defrost.Heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting muffler
Road both passes through regenerative apparatus 19.Regenerative apparatus 19 can absorb and heat gas exhaust piping, the defrosting used heat that distributes of gas exhaust piping, also may be used
Think do not reach temperature requirement value heat gas exhaust piping, defrosting gas exhaust piping heat；On the other hand, muffler is heated
Before road, the return-air of defrosting return line enter compressor 1 fluid reservoir 2, first pass through regenerative apparatus 19 and heat, and then improve return-air
Temperature, improves heating effect.
In practical operation, in order to circuit design terseness, heat gas exhaust piping by from compressor 1 to indoor heat exchange
The aerofluxus main road 4 of series connection on device 17 direction forms with heating exhaust branch；Defrosting gas exhaust piping is by changing to outdoor from compressor 1
The aerofluxus main road 4 of series connection on hot device 18 direction and defrosting exhaust branch composition.Aerofluxus main road 4 is through regenerative apparatus 19.Namely
Say, heat gas exhaust piping and defrosting gas exhaust piping uses same aerofluxus main road 4 in the position, source of high temperature and high pressure gas, in
Downstream is split up into and heats exhaust branch, defrosting exhaust branch.The high temperature and high pressure gas discharged from compressor 1 air vent first passes through
Aerofluxus main road 4 discharges, and then in defrosting operation, respectively enters according to shunt ratio and heats gas exhaust piping, defrosting aerofluxus
Pipeline.
Regulate the high temperature and high pressure gas flow heating, defrosting for convenience, heat and control aperture is set on exhaust branch
First control valve, defrosting exhaust branch arranges the second control valve controlling aperture.In certain embodiments, the first control valve,
Second control valve all can use electric expansion valve.Under heating and defrosting pattern, the first control valve, the second control valve are all opened, logical
Overregulate respective aperture, it is achieved shunt ratio, determine heat, defrost use heat.Heat under non-defrosting mode, the second control valve
Closing, the first control valve is opened, and high temperature and high pressure gas all flows into indoor heat exchanger 17 through the first control valve.
In practical operation, for the terseness of circuit design, and the convenience controlled, heat return line by from room
Interior heat exchanger 17 on compressor 1 direction series connection heat return-air branch road and return-air main road 3 forms；Defrosting return line is by certainly
Outdoor heat exchanger 18 forms to defrosting return-air branch road and the return-air main road 3 of series connection on compressor 1 direction；Return-air main road 3 is through storing
Thermal 19.It is to say, heat return line, defrosting return line converges to return-air main road 3 in downstream, unified sends into compression
Machine 1 fluid reservoir 2.From indoor heat exchanger 17 discharge condensed after coolant flow through and heat return-air branch road, from outdoor heat exchanger 18
Defrosting discharge condensed after coolant flow through defrosting return-air branch road after import return-air main road 3, the coolant of return-air main road 3 is through storing
Compressor 1 fluid reservoir 2 is returned to after thermal 19 heating.
Wherein, defrosting return-air branch road arranges fluid reservoir 7, the coolant after defrosting with absorption chamber external heat exchanger 18.
In certain embodiments, set successively on the defrosting return-air branch road of the return air outlet of outdoor heat exchanger 18 to fluid reservoir
Put the 3rd control valve and reducer 8.Carry out throttling by reducer 8 and be processed as gas-liquid mixture.Wherein, in certain embodiments
Reducer can select throttle capillary tube.Owing to, under the heating mode of non-defrosting, flowing out from outdoor heat exchanger 18 gas returning port
Evaporation coolant returns to compressor 1, therefore, in order to avoid the heating mode of non-defrosting after flowing through return line, four-way change-over valve 13
Under, evaporation coolant flows into fluid reservoir 7, therefore, arranges the 3rd control valve, opens in defrost mode, at non-defrosting heating mode
Lower closedown.
By foregoing description, under defrosting mode (heat and do not shut down), the condensed coolant of indoor heat exchanger 17 is no longer
Enter outdoor heat exchanger 18；Therefore, heat and the 4th control valve is set on return-air branch road.In defrost mode, unlucky branch road is heated
Open, the path blockade between indoor heat exchanger 17 and outdoor heat exchanger 18.
In certain embodiments, regenerative apparatus 19 is internal fills phase change heat storage material 5, and phase change heat storage material 5 is according to phase transformation
Point undergoes phase transition, neither endothermic nor exothermic, and this transformation temperature can control heat absorption and exothermic progression, when ambient temperature height (discharge duct,
Aerofluxus main road 4 heat dissipation capacity is big, causes ambient temperature height), heat absorption；When discharge duct, aerofluxus main road 4 heat dissipation capacity are low, it is internal cold
When matchmaker's temperature is low, heat release.Phase change heat storage material 5 uses paraffin and sulfuration expanded graphite mixture, and volume of mixture ratio is for 20:1.
Regenerative apparatus 19 shell uses adiabator to process.
Based on above-mentioned various designs, in the period that return line is heated, first have to guarantee heat gas exhaust piping,
Refrigerant temperature in defrosting gas exhaust piping can reach indoor heating, the requirement of outdoor defrosting, accordingly, it would be desirable to heating exhaustor
On road, defrosting gas exhaust piping, temperature measuring equipment (being preferably disposed on aerofluxus main road 4) is set, when refrigerant temperature in gas exhaust piping
Do not reach when requiring, and regenerative apparatus 19 does not reaches the phase transformation of heat radiation, then now, need to arrange heating part in regenerative apparatus 19
Part 10, improves temperature by heater block 10, carries out heat supply directly to the coolant heated in gas exhaust piping, defrosting gas exhaust piping.
But also regenerative apparatus 19 heat supply can be given, improve its quantity of heat storage.
Depending on wherein the selection of heater block 10 can be according to the demand of air-conditioning heating power, such as: electrically heated rod, resistance
Silk, heat exchanger tube etc., can be used alone can also several be used in combination.Preferred (PTC) electrically heated rod, inserts and stores in this technique
Thermal 19 centre position, is electrically heated as required.
It is noted that the application of air-conditioning is usually automatization's Based Intelligent Control, therefore, it is suggested that add temperature in certain embodiments
Control device 21, temperature measuring equipment is all connected with temperature controller 21 with heater block 10, and temperature controller 21 is according to the survey of temperature measuring equipment
Amount result, starts heater block 10.On the other hand, temperature controller 21 can also control heater block 10 and quits work.To this end, temperature control
Device 21 is provided with heater block 10 start-up temperature and arranges position and heater block 10 transships temperature and arranges position.After exceeding overload temperature, add
Thermal part 10 stops heating, and protection system temperature is not up to dangerous temperature value.
Above-mentioned various designs are provided to solve, under defrosting mode, to heat ceaselessly problem.But, commonly heating mould
In the case of formula (non-defrosting), compressor 1 by gas exhaust piping and return line respectively with indoor heat exchanger 17, outdoor heat exchanger
The 18 non-defrostings of connected composition heat loop or refrigerating circuit.Non-defrosting heats loop, is applied to heating mode, compressor 1 high temperature
Gases at high pressure from discharge duct send into indoor heat exchanger 17, condensed after, coolant subsequently enters outdoor heat exchanger 18, is steamed
Sending out, low-temp low-pressure coolant returns to compressor 1 by return line.Refrigerating circuit, is applied to refrigeration mode, and compressor 1 high temperature is high
Calm the anger body from discharge duct send into outdoor heat exchanger 18, condensed after, coolant subsequently enters indoor heat exchanger 17, is evaporated,
Low-temp low-pressure coolant returns to compressor 1 fluid reservoir of compressor 1 by return line.
Gas exhaust piping passes regenerative apparatus 19, and the return line under heating mode passes regenerative apparatus 19.When unusual low temperature
In the environment of, the heat exchange of outdoor heat exchanger 18 is not enough, and gas exhaust piping passes regenerative apparatus 19, and the return line under heating mode is worn
Cross regenerative apparatus 19.The coolant of return line and gas exhaust piping is heated, from whole by regenerative apparatus 19 by the heat of savings
The heating capacity of heat pump air conditioner is optimized so that it is adapt to lower outdoor environment by system low after the optimization of this device on body
Temperature heating capacity has and is obviously improved.
It should be noted that owing to discharge duct is positioned in regenerative apparatus 19, regenerative apparatus 19 can absorb discharge duct
The heat distributed, when the temperature of discharge duct is relatively low, regenerative apparatus 19 can add heat exhaust pipe, improves coolant in discharge duct
Temperature.Choke valve 15 is set on the pipeline between outdoor heat exchanger 18 and indoor heat exchanger 17.
Regenerative apparatus 19 can be positioned over above compressor 1 air vent, its size can be according to compressor 11 air vent above
Space allocation.Size according to regenerative apparatus 19 determines that gas exhaust piping 4 and return line 3 are at the stream within regenerative apparatus 19 again
Journey.
In order to circuit design succinct, the return line under heating mode is by outdoor heat exchanger 18 to compressor 1
Series connection heat the first return-air branch road and return-air main road 3 forms, return-air main road 3 is through regenerative apparatus 19.
When, after the heating mode determining air-conditioning or refrigeration mode, four-way commutation being arranged on compressor 1 discharge duct
Valve 13, four-way change-over valve 13 is connected with outdoor heat exchanger 18, indoor heat exchanger 17, by the rotation of four-way change-over valve 13, it is achieved
Non-defrosting heats the switching of loop, refrigerating circuit.
First return-air branch road of outdoor heat exchanger 18 return-air outlet to four-way change-over valve 13 arranges the 5th control valve.
When heating mode (non-defrosting), the 5th control valve is opened, and when defrosting mode (heat and do not stop), the 5th control valve is closed.
On the other hand, owing to discharge duct is constantly in regenerative apparatus 19, if in cooling mode, system is still used
Return line under heat pattern, then can cause poor refrigerating efficiency, and therefore, the return line under refrigeration mode is different from heating mode
Under return line, and walk around regenerative apparatus 19.
Owing to heating mode uses different return line with refrigeration mode, accordingly, it would be desirable to according to corresponding mode of operation
Select corresponding return line.
In certain embodiments, the return line under heating mode arranges the 6th control valve controlling opening and closing, refrigeration mode
Under return line arrange control opening and closing the 7th control valve.By the 6th control valve, the unlatching of the 7th control valve, close and open
Open or close the return line of correspondence.The two control valve can link with air-conditioning work pattern, by unified controller
Carry out corresponding regulation.It is of course also possible to according to the collection effect of room temperature harvester, carry out direct temperature controlled opening/closing.Implement at some
In example, control valve can select electromagnetic expanding valve.
Based on above-mentioned various designs, in the period that return line is heated, first have to ensure in gas exhaust piping
Refrigerant temperature can reach the requirement of indoor heating, accordingly, it would be desirable to arrange delivery temperature measurement apparatus on gas exhaust piping, works as row
When in air pipe, refrigerant temperature does not reaches and requires, and regenerative apparatus 19 does not reaches the phase transformation of heat radiation, then now, regenerative apparatus 19
Inside need to arrange heater block 10, improve temperature by heater block 10, carry out heat supply directly to the coolant in gas exhaust piping.And
And regenerative apparatus 19 heat supply can also be given, improve its quantity of heat storage.
Depending on wherein the selection of heater block 10 can be according to the demand of air-conditioning heating power, such as: electrically heated rod, resistance
Silk, heat exchanger tube etc., can be used alone can also several be used in combination.Preferred (PTC) electrically heated rod, inserts and stores in this technique
Thermal 19 centre position, is electrically heated as required.
It is noted that the application of air-conditioning is usually automatization's Based Intelligent Control, therefore, it is suggested that add temperature in certain embodiments
Control device 21, temperature measuring equipment is all connected with temperature controller 21 with heater block 10, and temperature controller 21 is according to the survey of temperature measuring equipment
Amount result, starts heater block 10.On the other hand, temperature controller 21 can also control heater block 10 and quits work.To this end, temperature control
Device 21 is provided with heater block 10 start-up temperature and arranges position and heater block 10 transships temperature and arranges position.After exceeding overload temperature, add
Thermal part 10 stops heating, and protection system temperature is not up to dangerous temperature value.
Not shutting down defrosting system based on above-mentioned air-conditioning, carry out air-conditioning and do not shut down defrosting operation, this operational approach includes:
Start defrosting mode；
Open and heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting return line；
Respectively enter from exhaust outlet of compressor expellant gas and heat gas exhaust piping, defrosting gas exhaust piping；Heat exhaustor
The heat that road, defrosting gas exhaust piping distribute is absorbed by regenerative apparatus, stores；
Enter and heat after the gas of gas exhaust piping enters back into indoor heat exchanger condensation, by heating return line, by accumulation of heat
After device heating, return the fluid reservoir of compressor；
After the gas of entrance defrosting gas exhaust piping enters back into outdoor heat exchanger defrosting, by defrosting return line, by accumulation of heat
After device heating, return the fluid reservoir of compressor.
When open heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting return line after, compressor
High temperature and high pressure gas begins to flow into and heats gas exhaust piping, defrosting gas exhaust piping, now also needs to detection and heats gas exhaust piping, defrosting
The gas temperature of gas exhaust piping；If gas temperature is less than defrosting temperature threshold, then start the heater block in regenerative apparatus.
Correspondence possesses the air-conditioning of defrosting mode, and when it runs heating mode (non-defrosting), concrete operations are:
Start heating mode；
Open return line under gas exhaust piping and heating mode, close and heat gas exhaust piping, heat return line, defrosting row
Air pipe, defrosting return line；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is inhaled by regenerative apparatus
Receive, store；
After the gas of entrance gas exhaust piping enters back into indoor heat exchanger condensation, send into outdoor heat exchanger, from outdoor heat exchanger
After gas returning port is discharged, return line under heating mode, after being heated by regenerative apparatus, return the fluid reservoir of compressor.
Under opening gas exhaust piping and heating mode after return line, the high temperature and high pressure gas of compressor flows into gas exhaust piping
After, in addition it is also necessary to gas temperature in detection gas exhaust piping；If gas temperature is less than heating temperature threshold in gas exhaust piping, then start storage
Heater block in thermal.
Correspondence possesses the air-conditioning of defrosting mode, and when it runs refrigeration mode (non-defrosting), concrete operations are:
Start refrigeration mode；
Open return line under gas exhaust piping and refrigeration mode, close and heat gas exhaust piping, heat return line, defrosting row
Return line under air pipe, defrosting return line, heating mode；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is inhaled by regenerative apparatus
Receive, store；
After the gas of entrance gas exhaust piping enters back into outdoor heat exchanger condensation, send into indoor heat exchanger, from indoor heat exchanger
After gas returning port is discharged, return line under refrigeration mode, after walking around regenerative apparatus, return the fluid reservoir of compressor.
The air-conditioning being loaded with this air-conditioning non-stop-machine defrosting system will be different from the air-conditioning of prior art, become a kind of novel
Air-conditioning, as shown in Figure 2.The air-conditioning that this is novel is also protected by this technology.The function mode of this air-conditioning reality is for describing
As follows, more succinct in order to describe, each control valve all uses electric expansion valve, is made a distinction by numbering.First control valve is electricity
Sub-expansion valve 12, the second control valve is electric expansion valve 25, the 3rd control valve be electric expansion valve the 9, the 4th control valve be electronics
Expansion valve the 20, the 5th control valve be electric expansion valve the 23, the 6th control valve be electric expansion valve the 14, the 7th control valve be that electronics is swollen
Swollen valve 15.
Mode one, defrosting mode
Starting defrosting mode, electric expansion valve 12,25,9,6,20,24 is opened, and electric expansion valve 11,14,22,23 is closed,
The high temperature and high pressure gas of compressor enters aerofluxus main road, and aerofluxus main road passes regenerative apparatus, and the gas of aerofluxus main road is through electronics
Expansion valve 12, electric expansion valve 25 shunt.Shunt the gas through electric expansion valve 12 and enter indoor heat exchanger, be used for heating,
Enter through the condensed coolant of indoor heat exchanger and heat return-air branch road, open at the electric expansion valve 20 heated on return-air branch road
Opening, the coolant heating return-air branch road imports return-air main road；Shunt the gas through electric expansion valve 25 and enter outdoor heat exchanger, use
In defrosting, enter defrosting return-air branch road through the condensed coolant of outdoor heat exchanger, the electronic expansion on defrosting return-air branch road
Valve 9,6 is opened, and through the throttling of throttle capillary tube 8, flows into fluid reservoir 7, then imports return-air main road；Return-air main road passes accumulation of heat
Device, after wherein coolant flows into electric expansion valve 24, enters compressor liquid storage can.
Mode two, heating mode
Starting heating mode, electric expansion valve 12,22,23,14,24 is opened, and electric expansion valve 25,9,6,20,11 is closed,
The high temperature and high pressure gas of compressor enters aerofluxus main road, and aerofluxus main road passes regenerative apparatus, and the gas of aerofluxus main road is through electronics
Flow into indoor heat exchanger after expansion valve 12, four-way change-over valve 13, be used for heating, flow into through the condensed coolant of indoor heat exchanger
Path between indoor heat exchanger and outdoor heat exchanger, the electric expansion valve 22 on this path is opened, and enters outdoor heat exchanger, quilt
The coolant of evaporation is discharged from outdoor heat exchanger air vent, enters return line, and return line enters electricity after four-way change-over valve
Sub-expansion valve 14, imports return-air main road, and return-air main road passes regenerative apparatus, after wherein coolant flows into electric expansion valve 24, enters
Compressor liquid storage can.
Mode three, refrigeration mode
Starting clammy standing in silent tribute is, electric expansion valve 23,22,11 is opened, and electric expansion valve 12,14,25,9,6,20,24 closes
Closing, the high temperature and high pressure gas of compressor enters aerofluxus main road, and aerofluxus main road passes regenerative apparatus, and the gas of aerofluxus main road is through four
Logical reversal valve and the connecting path of outdoor heat exchanger, on this path, electric expansion valve 23 is opened, and flows into outdoor heat exchanger, is condensed
Gas path between indoor heat exchanger and outdoor heat exchanger, the electric expansion valve 22 on this path is opened, through celebrating a festival
Stream valve 15 throttles, and flows into indoor heat exchanger, is used for freezing, and the coolant after pervaporation is by flowing into refrigeration after four-way change-over valve 13
Pattern return line, the electric expansion valve 11 in refrigeration mode return line is opened, and refrigeration mode return line walks around accumulation of heat
After device, enter compressor liquid storage can.
In heating mode and defrosting mode, the refrigerant temperature of detection aerofluxus main road, when the temperature being unable to reach associative mode
During degree threshold value, temperature controller 21 opens electrically heated rod, heats for the coolant in regenerative apparatus and aerofluxus main road.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (24)
1. defrosting system do not shut down by an air-conditioning, it is characterised in that including: compressor, regenerative apparatus, indoor heat exchanger, outdoor
Heat exchanger；By heating gas exhaust piping, heating return line and connect and compose system between described compressor and described indoor heat exchanger
Hot loop, is connected and composed removed by defrosting gas exhaust piping, defrosting return line between described compressor and described outdoor heat exchanger
Frost loop；
Described heat gas exhaust piping, described in heat return line, described defrosting gas exhaust piping, described defrosting return line both pass through
Described regenerative apparatus.
2. defrosting system do not shut down by air-conditioning as claimed in claim 1, it is characterised in that described in heat gas exhaust piping and include:
On compressor to described indoor heat exchanger direction, the aerofluxus main road of series connection forms with heating exhaust branch；Described defrosting exhaustor
Road includes: at described aerofluxus main road and the defrosting exhaust branch composition of series connection on compressor to described outdoor heat exchanger direction；
Aerofluxus main road passes regenerative apparatus.
3. defrosting system do not shut down by air-conditioning as claimed in claim 2, it is characterised in that described in heat control be set on exhaust branch
First control valve of aperture processed, described defrosting exhaust branch arranges the second control valve controlling aperture.
4. defrosting system do not shut down by air-conditioning as claimed in claim 1, it is characterised in that described in heat return line and include:
On indoor heat exchanger to described compressor direction, series connection heats return-air branch road and return-air main road composition；Described defrosting muffler
Road includes: at defrosting return-air branch road and the return-air main road composition of series connection on outdoor heat exchanger to described compressor direction；Described
Return-air main road passes described regenerative apparatus.
5. defrosting system do not shut down by air-conditioning as claimed in claim 4, it is characterised in that arrange storage on described defrosting return-air branch road
Flow container.
6. defrosting system do not shut down by air-conditioning as claimed in claim 5, it is characterised in that go out from the return-air of described outdoor heat exchanger
Mouth sets gradually the 3rd control valve and reducer on the defrosting return-air branch road of described fluid reservoir.
7. defrosting system do not shut down by air-conditioning as claimed in claim 6, it is characterised in that described reducer is throttle capillary tube.
8. defrosting system do not shut down by air-conditioning as claimed in claim 4, it is characterised in that described in heat and on return-air branch road, arrange the
Four control valves.
9. defrosting system do not shut down by air-conditioning as claimed in claim 1, it is characterised in that described regenerative apparatus is internal fills phase transformation
Heat accumulating.
10. defrosting system do not shut down by air-conditioning as claimed in claim 1, it is characterised in that described in heat gas exhaust piping, described remove
On frost gas exhaust piping, temperature measuring equipment is set, in described regenerative apparatus, heater block is set.
Defrosting system do not shut down by 11. air-conditionings as claimed in claim 10, it is characterised in that described heater block includes: electricity adds
Hot pin and/or resistance wire and/or heat exchanger tube.
Defrosting system do not shut down by 12. air-conditionings as claimed in claim 10, it is characterised in that also include: temperature controller, described temperature
Measurement apparatus is all connected with described temperature controller with described heater block；Described temperature controller is provided with heater block start-up temperature and arranges position
Position is set with heater block overload temperature.
Defrosting system do not shut down by 13. air-conditionings as described in any one of claim 1-12, it is characterised in that described compressor passes through
Gas exhaust piping with return line respectively be connected with indoor heat exchanger, outdoor heat exchanger composition non-defrosting heat loop or freeze back
Road；
Described gas exhaust piping passes described regenerative apparatus, and the return line under heating mode passes described regenerative apparatus.
Defrosting system do not shut down by 14. air-conditionings as claimed in claim 13, it is characterised in that the return line bag under heating mode
Include: heat the first return-air branch road and return-air main road, described return-air connect on described outdoor heat exchanger to described compressor
Main road passes described regenerative apparatus.
Defrosting system do not shut down by 15. air-conditionings as claimed in claim 14, it is characterised in that described gas exhaust piping is changed by four-way
It is connected with indoor heat exchanger or outdoor heat exchanger respectively to valve, constitutes non-defrosting and heat loop or refrigerating circuit.
Defrosting system do not shut down by 16. air-conditionings as claimed in claim 15, it is characterised in that in outdoor heat exchanger return-air outlet
On the described first return-air branch road of described four-way change-over valve, the 5th control valve is set.
Defrosting system do not shut down by 17. air-conditionings as claimed in claim 13, it is characterised in that the return line under refrigeration mode around
Cross described regenerative apparatus.
Defrosting system do not shut down by 18. air-conditionings as claimed in claim 17, it is characterised in that the return line under heating mode sets
Putting the 6th control valve controlling opening and closing, the return line under refrigeration mode arranges the 7th control valve controlling opening and closing.
19. 1 kinds of air-conditionings, it is characterised in that include that defrosting system do not shut down by the air-conditioning described in any one of claim 1-18.
Defrost method do not shut down by 20. 1 kinds of air-conditionings, it is characterised in that including:
Start defrosting mode；
Open and heat gas exhaust piping, heat return line, defrosting gas exhaust piping, defrosting return line；
Respectively enter from exhaust outlet of compressor expellant gas and heat gas exhaust piping, defrosting gas exhaust piping；Heat gas exhaust piping, remove
The heat that frost gas exhaust piping distributes is absorbed by regenerative apparatus, stores；
Heat after the gas of gas exhaust piping enters back into indoor heat exchanger condensation described in entrance, by heating return line, by accumulation of heat
After device heating, return the fluid reservoir of compressor；
Enter after the gas of described defrosting gas exhaust piping enters back into outdoor heat exchanger defrosting, by defrosting return line, by accumulation of heat
After device heating, return the fluid reservoir of compressor.
Defrost method do not shut down by 21. air-conditionings as claimed in claim 20, it is characterised in that also include: the row of heating described in detection
Air pipe, the gas temperature of described defrosting gas exhaust piping；
If described gas temperature is less than defrosting temperature threshold, then start the heater block in regenerative apparatus.
Defrost method do not shut down by 22. air-conditionings as described in claim 20 or 21, it is characterised in that also include:
Start heating mode；
Open return line under gas exhaust piping and heating mode, heat described in closedown gas exhaust piping, described in heat return line, institute
State defrosting gas exhaust piping, described defrosting return line；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is absorbed by regenerative apparatus, storage
Deposit；
Enter after the gas of described gas exhaust piping enters back into indoor heat exchanger condensation, send into outdoor heat exchanger, from outdoor heat exchanger
After gas returning port is discharged, return line under heating mode, after being heated by regenerative apparatus, return the fluid reservoir of compressor.
Defrost method do not shut down by 23. air-conditionings as claimed in claim 22, it is characterised in that also include: in detection gas exhaust piping
Gas temperature；
If gas temperature is less than heating temperature threshold in described gas exhaust piping, then start the heater block in regenerative apparatus.
Defrost method do not shut down by 24. air-conditionings as described in claim 20 or 21, it is characterised in that also include:
Start refrigeration mode；
Open return line under gas exhaust piping and refrigeration mode, heat described in closedown gas exhaust piping, described in heat return line, institute
State return line under defrosting gas exhaust piping, described defrosting return line, heating mode；
Gas exhaust piping is entered from exhaust outlet of compressor expellant gas；The heat that gas exhaust piping distributes is absorbed by regenerative apparatus, storage
Deposit；
Enter after the gas of described gas exhaust piping enters back into outdoor heat exchanger condensation, send into indoor heat exchanger, from indoor heat exchanger
After gas returning port is discharged, return line under refrigeration mode, after walking around regenerative apparatus, return the fluid reservoir of compressor.
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| CN201610933228.5A CN106288565A (en) | 2016-10-31 | 2016-10-31 | Air-conditioning does not shut down defrosting system and method and air-conditioning |
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| CN106885404A (en) * | 2017-01-09 | 2017-06-23 | 美的集团股份有限公司 | The heating and defrosting system and method and heat pump air conditioner of a kind of heat pump air conditioner |
| CN107178924A (en) * | 2017-05-23 | 2017-09-19 | 华中科技大学 | A kind of accumulation of heat is not shut down except defrosting system and air-conditioning |
| CN107401851A (en) * | 2017-09-08 | 2017-11-28 | 海信（广东）空调有限公司 | Air-conditioner system and air-conditioner system do not shut down the control method of defrosting |
| CN109668219A (en) * | 2018-11-27 | 2019-04-23 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit condenser, air conditioner and Defrost method |
| CN111256290A (en) * | 2020-01-20 | 2020-06-09 | 珠海格力电器股份有限公司 | Heat pump air conditioner |
| CN111271796A (en) * | 2020-03-26 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN112611074A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
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