CN107702414A - A kind of new refrigerator thermal storage defrosting system - Google Patents
A kind of new refrigerator thermal storage defrosting system Download PDFInfo
- Publication number
- CN107702414A CN107702414A CN201711135687.XA CN201711135687A CN107702414A CN 107702414 A CN107702414 A CN 107702414A CN 201711135687 A CN201711135687 A CN 201711135687A CN 107702414 A CN107702414 A CN 107702414A
- Authority
- CN
- China
- Prior art keywords
- compressor
- heat
- phase
- evaporator
- bypass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 32
- 238000005338 heat storage Methods 0.000 claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000012782 phase change material Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000011232 storage material Substances 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
-
- 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
-
- 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
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/30—Insulation with respect to sound
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
A kind of new refrigerator thermal storage defrosting system, with No.1 triple valve in the entrance of compressor and the exit connecting bypass superheater tube of evaporator, the parcel phase-transition heat-storage bag on compressor and bypass pipe, collection compressor housing used heat；With No. two triple valves evaporator defrosting is led in the outlet pipe section of compressor and the entrance pipeline section connecting bypass mozzle of evaporator, the high temperature refrigerant come out after being heated by accumulation of heat bag through compressor.Due to phase-transition heat-storage pack tightly it is close be wrapped on compressor case, can fully reclaim compressor housing used heat, effectively improve defrosting efficiency, there is effects of energy conservation and environmental protection.
Description
Technical field
Defrosting system is removed using phase-transition heat-storage the present invention relates to one kind, belongs to refrigeration for refrigerator technical field.
Background technology
With the continuous improvement of people's living standards, refrigerator gradually spreads to every family.And refrigeration for refrigerator system
The defrosting problem of system is always the focus of refrigeration industry concern, when the temperature of evaporator in refrigerator is less than air dew point in case,
Vapor in refrigerator can be condensed in evaporator surface and frosting.On the one hand frosting reduces ventilation area, increase circulation
Resistance, reduce the heat exchange amount of evaporator；On the other hand the heat transfer resistance of evaporator fin surface and air is increased, reduces system
Cold performance.Therefore, it is necessary to defrost in time.
Refrigerator is generally reached using the heat distributed when being worked using the heater of arrangement on an evaporator at present
Power consumption height be present, defrost the shortcomings of uneven in the purpose of defrosting, the technology.Liu Zhongbao of Beijing University of Technology et al. has been studied
Invent a kind of hot-gas bypass joint phase-transition heat-storage applied to refrigerator and remove defrosting system, but because phase-transition heat-storage bag is arranged on compression
Machine is exported between condenser inlet so that discharge duct is long, causes refrigerating efficiency thereafter to reduce.
The content of the invention
The present invention provides a kind of new refrigerator thermal storage defrosting system, makes full use of compressor housing used heat to defrost, reaches section
The effect of energy environmental protection.
To reach this purpose, the present invention uses following technical scheme：
Mainly there are the parts such as compressor, condenser, capillary, evaporator on the cooling flow of refrigerator, the present invention provides a kind of
New thermal storage defrosting system：With No.1 triple valve in the entrance of compressor and the exit connecting bypass superheater tube of evaporator,
Compressor collects compressor housing used heat with wrapping up phase-transition heat-storage bag on bypass pipe；With No. two triple valves in the outlet of compressor
The entrance pipeline section connecting bypass mozzle of pipeline section and evaporator, the high temperature refrigerant come out after being heated by accumulation of heat bag through compressor
Lead to evaporator defrosting.
According to the present invention, defroster system includes refrigerating circuit and defrosting loop, and refrigerating circuit includes the compression of series connection
Machine, No. two triple valves, condenser, capillary, evaporator and No.1 triple valve, defrosting loop include series connection compressor, No. two
Triple valve, bypass mozzle, evaporator, No.1 triple valve, bypass superheater tube and phase-transition heat-storage bag.
According to the present invention, when under refrigerating state, the phase-transition heat-storage bag outside compressor is wrapped in due to by compression case
The heating of body used heat, phase-change material are changed into liquid from solid-state, are collected used heat for defrosting by the form of latent heat of phase change.
According to the present invention, it is necessary to when defrosting, switching three-way valve, defrosting loop is connected, when refrigerant passes through phase-transition heat-storage bag
It is heated to superheat state and enters back into compressor, compressor inlet pressure is close with outlet pressure here, mainly plays pump
Working medium is set to circulate, the high temperature refrigerant of outflow enters in evaporator by bypassing mozzle, enters to the frost layer of evaporator external
Row heating defrost, then enter again through bypass overheat pipeline in phase-transition heat-storage bag and heated, according to this circulating defrosting.
According to the present invention, phase-transition heat-storage packs tightly close parcel on the compressor, fully absorbs the used heat of compressor housing.
According to the present invention, the phase-change material for adapting to compression case temperature is included in phase-transition heat-storage bag, paraffin can be selected,
By adding iron plate and graphite powder to improve the thermal conductivity of phase change heat storage material.
According to the present invention, the import of No.1 triple valve is connected with the outlet of evaporator, it two outlet respectively with compression
The entrance of machine is connected with bypass superheater tube；The import of No. two triple valves is connected with the outlet of compressor, its two outlet difference
It is connected with the entrance and bypass mozzle of condenser.
The present invention compared with prior art, has the following advantages that：
1st, compressor housing used heat is recycled, this heat is stored for defrosting by the form of latent heat of phase change, had
The effect of energy-conserving and environment-protective.
2nd, due to phase-transition heat-storage pack tightly it is close be wrapped on compressor case, can fully reclaim compressor housing used heat, effectively
Defrosting efficiency is improved, and does not influence the refrigerating efficiency of refrigerator.
3rd, compared with simple hot gas bypass defrosting technology, the present invention solves before refrigerant enters compressor and is condensed into liquid
The problem of state, compressor is avoided to produce liquid hit phenomenon.
4th, compressor is wrapped in paraffin accumulation of heat bag, can effectively reduce noise problem caused by compressor operating.
Brief description of the drawings
Fig. 1 is the structural representation that this removes defrosting system.
In figure：1st, compressor, 2, condenser, 3, capillary, 4, evaporator, 5, phase-transition heat-storage bag, 6, No.1 triple valve, 7,
No. two triple valves, 8, bypass superheater tube, 9, bypass mozzle.
Embodiment
The embodiment of the present invention is further illustrated below in conjunction with the accompanying drawings.
The system, which includes, freezes and two loops of defrosting, refrigerating circuit include 1, No. two triple valve 7 of compressor, cold of series connection
Condenser 2, capillary 3, evaporator 4 and No.1 triple valve 6, defrosting loop include 1, No. two triple valve 7 of compressor of series connection, bypass
Mozzle 9, evaporator 4, No.1 triple valve 6, bypass superheater tube 8 and phase-transition heat-storage bag 5.
Under refrigeration work state：The import A connection outlet B of No.1 triple valve 6, outlet C disconnect；No. two triple valve import a connect
Exit b, outlet c disconnect；The high-temperature low-pressure refrigerant flowed out from evaporator 4 enters in compressor 1, the refrigeration after being compressed
Agent is changed into high pressure gaseous, while the accumulation of heat bag 5 to being wrapped in compressor case heats, and its heat-storing material is heated by solid
State is changed into liquid, and heat storage gets up with the form for crossing latent heat of phase change, and high temperature and high pressure gaseous refrigerant enters condenser 2
In, by the cooling water of normal temperature or air setting into highly pressurised liquid, subsequently enter the progress reducing pressure by regulating flow of capillary 3 and be changed into low pressure shape
State, the liquid refrigerant of low-temp low-pressure, which enters in evaporator 4, is evaporated absorption refrigeration, the high-temperature low-pressure system come out from evaporator
Cryogen flows into compressor 1 again, carries out kind of refrigeration cycle.
Under the working condition that defrosts：The import A connection outlet C of No.1 triple valve 6, outlet B disconnect；No. two triple valve import a connect
Exit c, outlet b disconnect；The high-temperature high-pressure refrigerant flowed out from compressor 1 is straight by bypass mozzle 9 through No. two triple valves 7
Connect and lead in evaporator 4, the frost layer of high temperature refrigerant gas and evaporator external carries out heat exchange defrosting, then from evaporator stream
The low-temperature refrigerant gone out is led in phase-transition heat-storage bag 5 through No.1 triple valve 6 by bypass superheater tube 8 be heated in overheat shape
State, then flow into again in compressor, so circulation is defrosted.Here compressor inlet pressure is close with outlet pressure, mainly
Playing pump makes working medium circulate.
Claims (8)
1. mainly there is the parts such as compressor, condenser, capillary, evaporator on the cooling flow of refrigerator, accumulation of heat of the present invention removes
Defrosting system is characterised by：With No.1 triple valve in the entrance of compressor and the exit connecting bypass superheater tube of evaporator, pressing
Contracting machine collects compressor housing used heat with wrapping up phase-transition heat-storage bag on bypass pipe；With No. two triple valves compressor outlet
Section and the entrance pipeline section connecting bypass mozzle of evaporator, the high temperature refrigerant come out after being heated by accumulation of heat bag through compressor draw
Defrosted to evaporator.
2. defroster system according to claim 1, it is characterised in that：Including refrigerating circuit and defrosting loop, refrigeration
Loop includes compressor, No. two triple valves, condenser, capillary, evaporator and the No.1 triple valve of series connection, and defrosting loop includes
The compressor of series connection, No. two triple valves, bypass mozzle, evaporator, No.1 triple valve, bypass superheater tube and phase-transition heat-storage bag.
3. defroster system according to claim 1, it is characterised in that：When under refrigerating state, compressor is wrapped in
For outer phase-transition heat-storage bag due to being heated by compressor housing used heat, phase-change material is changed into liquid from solid-state, is dived by phase transformation
The form of heat collects used heat for defrosting.
4. defroster system according to claim 1, it is characterised in that：When needing defrosting, switching three-way valve, connection removes
White loop, refrigerant are heated to superheat state when passing through phase-transition heat-storage bag and enter back into compressor, here compressor inlet pressure
Close with outlet pressure, mainly playing pump makes working medium circulate, and the high temperature refrigerant of outflow enters steaming by bypassing mozzle
Send out in device, heating defrost is carried out to the frost layer of evaporator external, then enter again through bypass overheat pipeline in phase-transition heat-storage bag
Heated, according to this circulating defrosting.
5. defroster system according to claim 1, it is characterised in that：Phase-transition heat-storage, which packs tightly, close is wrapped in compressor
On, fully absorb the used heat of the housing of compressor.
6. defroster system according to claim 1, it is characterised in that：Include adaptation compressor in phase-transition heat-storage bag
The phase-change material of case temperature, paraffin can be selected, by adding iron plate and graphite powder to improve the thermal conductivity of phase change heat storage material.
7. defroster system according to claim 1, it is characterised in that：The import of No.1 triple valve and going out for evaporator
Mouth is connected, and its two outlets are connected with the entrance and bypass superheater tube of compressor respectively；The import and compression of No. two triple valves
The outlet of machine is connected, and its two outlets are connected with the entrance and bypass mozzle of condenser respectively.
A kind of 8. refrigerator, it is characterised in that：Including removing defrosting system any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135687.XA CN107702414A (en) | 2017-11-16 | 2017-11-16 | A kind of new refrigerator thermal storage defrosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135687.XA CN107702414A (en) | 2017-11-16 | 2017-11-16 | A kind of new refrigerator thermal storage defrosting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107702414A true CN107702414A (en) | 2018-02-16 |
Family
ID=61179693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711135687.XA Pending CN107702414A (en) | 2017-11-16 | 2017-11-16 | A kind of new refrigerator thermal storage defrosting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107702414A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341165A (en) * | 2018-08-31 | 2019-02-15 | 上海交通大学 | A kind of air source heat pump defrosting system based on heat of compressor phase-change accumulation energy |
| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN113531967A (en) * | 2021-06-24 | 2021-10-22 | 西安交通大学 | Compressor waste heat recovery defrosting system based on phase change energy storage and working method |
| CN114234519A (en) * | 2021-12-20 | 2022-03-25 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114838536A (en) * | 2022-04-28 | 2022-08-02 | 海信（山东）冰箱有限公司 | Refrigerator and defrosting control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017428A (en) * | 2013-01-10 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN103017427A (en) * | 2013-01-10 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN103344068A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Energy-saving defrosting air source heat pump system |
| CN104879975A (en) * | 2015-06-15 | 2015-09-02 | 北京工业大学 | Hot-gas bypass and phase change heat storage combined defrosting system applied to refrigerator |
| CN105865132A (en) * | 2016-04-15 | 2016-08-17 | 合肥华凌股份有限公司 | Defrosting system, refrigerator and defrosting method |
| 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 |
| CN206755674U (en) * | 2017-05-14 | 2017-12-15 | 北京工业大学 | The defrosting structure of hot-gas bypass is combined in the accumulation of heat of refrigerant compressor housing used heat |
| CN207610456U (en) * | 2017-11-16 | 2018-07-13 | 华北电力大学 | A kind of new refrigerator thermal storage defrosting system |
-
2017
- 2017-11-16 CN CN201711135687.XA patent/CN107702414A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017428A (en) * | 2013-01-10 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN103017427A (en) * | 2013-01-10 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN103344068A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Energy-saving defrosting air source heat pump system |
| CN104879975A (en) * | 2015-06-15 | 2015-09-02 | 北京工业大学 | Hot-gas bypass and phase change heat storage combined defrosting system applied to refrigerator |
| CN105865132A (en) * | 2016-04-15 | 2016-08-17 | 合肥华凌股份有限公司 | Defrosting system, refrigerator and defrosting method |
| CN206755674U (en) * | 2017-05-14 | 2017-12-15 | 北京工业大学 | The defrosting structure of hot-gas bypass is combined in the accumulation of heat of refrigerant compressor housing used heat |
| 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 |
| CN207610456U (en) * | 2017-11-16 | 2018-07-13 | 华北电力大学 | A kind of new refrigerator thermal storage defrosting system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341165A (en) * | 2018-08-31 | 2019-02-15 | 上海交通大学 | A kind of air source heat pump defrosting system based on heat of compressor phase-change accumulation energy |
| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN109900047B (en) * | 2019-02-18 | 2024-05-17 | 北京工业大学 | Air-cooled refrigerator |
| CN113531967A (en) * | 2021-06-24 | 2021-10-22 | 西安交通大学 | Compressor waste heat recovery defrosting system based on phase change energy storage and working method |
| CN114234519A (en) * | 2021-12-20 | 2022-03-25 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114838536A (en) * | 2022-04-28 | 2022-08-02 | 海信（山东）冰箱有限公司 | Refrigerator and defrosting control method thereof |
| CN114838536B (en) * | 2022-04-28 | 2024-07-02 | 海信冰箱有限公司 | Refrigerator and defrosting control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107702414A (en) | A kind of new refrigerator thermal storage defrosting system | |
| CN104114964B (en) | Refrigerating circulatory device and the hot water generating device possessing it | |
| CN104879975A (en) | Hot-gas bypass and phase change heat storage combined defrosting system applied to refrigerator | |
| CN104748442B (en) | A kind of heat pump apparatus of air source | |
| CN103983013B (en) | Novel frost-free air source hot pump water heater | |
| CN103900184A (en) | Water cooling medium three-pipe refrigerating and heating air-conditioning system | |
| CN112923616B (en) | Air source CO for preventing evaporator from frosting by using heat of heat regenerator2Heat pump system | |
| CN106123170A (en) | Air conditioning system and control method thereof | |
| CN104697276B (en) | There is the air cooling type refrigerator of heat pipe type thermal storage defrosting mechanism | |
| CN107560253A (en) | The energy-conservation defrosting system and its control method of a kind of air source heat pump | |
| CN105588360B (en) | A kind of accumulation of heat outdoor unit, heat pump system and its control method | |
| CN206771794U (en) | Ultralow temperature Two-stage Compression monoblock type energy tower heat pump Screw chiller | |
| CN208832629U (en) | A kind of low-temperature cold water unit | |
| CN105157274B (en) | cooling/heating system | |
| CN206755674U (en) | The defrosting structure of hot-gas bypass is combined in the accumulation of heat of refrigerant compressor housing used heat | |
| CN108709333A (en) | The operation method and system of refrigeration system completely cooling among second throttle | |
| CN205783983U (en) | The heat high efficiente callback device of air source handpiece Water Chilling Units | |
| CN207610456U (en) | A kind of new refrigerator thermal storage defrosting system | |
| CN209355518U (en) | High-efficiency full solution type evaporation supercooling refrigeration cycle mechanism | |
| CN208704227U (en) | Utilize the air-breathing reheating of compressor housing accumulation of heat and the heat pump assembly of hot gas bypass defrosting | |
| CN108278791B (en) | Air source air conditioning system with double heat storage devices and defrosting method | |
| CN207922617U (en) | A kind of heat pump system with drip tray ice-melt pipeline | |
| CN106369884A (en) | Evaporator, air cooler, and refrigeration or heat pump device and system | |
| CN205980489U (en) | Energy -saving hot vapour defrosting system of air -source heat bump water heater | |
| CN208620678U (en) | A kind of air-conditioning refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180216 |