CN107676845A - A kind of CO2Air source heat pump synergy heating installation - Google Patents
A kind of CO2Air source heat pump synergy heating installation Download PDFInfo
- Publication number
- CN107676845A CN107676845A CN201711016117.9A CN201711016117A CN107676845A CN 107676845 A CN107676845 A CN 107676845A CN 201711016117 A CN201711016117 A CN 201711016117A CN 107676845 A CN107676845 A CN 107676845A
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- China
- Prior art keywords
- heat pump
- orifice plate
- compressor
- air source
- gas
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 238000009434 installation Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 16
- 239000003921 oil Substances 0.000 description 12
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 235000003642 hunger Nutrition 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000037351 starvation Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
Abstract
The invention discloses a kind of CO2Air source heat pump synergy heating installation, mainly include the first compressor, regenerator, gas cooler, evaporator, heat exchanger, condenser, the second compressor and intermediate processor, wherein heat exchanger, condenser, the second compressor and second throttle form a simple heat pump and are nested among system, and the present invention is by changing CO2The operation logic of air source heat pump system, in CO2Intermediate processor and simple heat pump are added in air source heat pump system, significantly reduces CO in heating installation2The heat for being collected into water is discharged into CO by the inflow temperature of air source heat pump gas cooler, intermediate processor2In coolant system, CO is improved2The heat of coolant system, so as to improve the temperature of heating equipment water supply line reclaimed water.Combined by both intermediate processor and simple heat pump and substantially increase CO2The comprehensive energy efficiency ratio of air source heat pump, solves traditional CO2Air source heat pump radiator central heating can not circular flow technical barrier.
Description
Technical field
The invention belongs to technical field of heat pumps, and in particular to a kind of CO2Air source heat pump synergy heating installation.
Background technology
CO in recent years2Teat pump boiler technology is quickly grown, compared with the freon Teat pump boiler of routine, CO2Heat pump
Water heater can produce 90 DEG C of high-temperature-hot-water, and the hot water temperature of conventional freon Teat pump boiler typically can only achieve 55-
65℃；CO simultaneously2Freon heat pump cycle of the coefficient of performance in heating of heat pump also than routine is high, can reach more than 4.0.But mesh
Preceding CO2Teat pump boiler mainly uses a heated type, i.e. water inlet coolant-temperature gage general control is within 35 DEG C, leaving water temperature one
As control in 70 DEG C -75 DEG C, under such conditions, CO2Air source heat pump comprehensive energy efficiency is higher, reaches as high as 6, mainly in
Bath hot water.Due to CO2It is small with the refrigerant temperature temperature difference into gas cooler when heat pump theory inflow temperature is higher than 35 DEG C,
Heat-exchange capacity is weaker, and heat exchange efficiency declines to a great extent, and the decay of unit heating capacity is serious, economical operation advantage unobvious, year operation
Cost is higher, and this is also CO2Heat pump cannot get wide variety of major reason in radiator heating, seek CO2Air source heat pump
It is to realize CO to reduce inflow temperature2The important technology barrier of refrigerant circulation mode of heating.
According to《Civil buildings heating ventilator and In Air Conditioning Design specification》The rule of GB50736-2012 national standards 5.3
It is fixed：" 5.3.1 radiator heating systems should use hot water as heating agent；75 DEG C/50 DEG C continuous heatings are preferably pressed in radiator central heating
It is designed, and supply water temperature is not preferably greater than 85 DEG C, supply backwater temperature difference is not preferably less than 20 DEG C." therefore, CO2Air source heat pump master
A mode of heating heat supply is used, bath hot water project is can be only applied to, circulating-heating mode can not be realized, its inflow temperature
It is limited within 35 DEG C, being can not be in radiator central heating application, CO2The high leaving water temperature of heat pump will be unable to obtain well
Use.
The content of the invention
The invention aims to solve technical problem present in prior art, there is provided one kind is simple in construction, can drop
Low CO2Air source heat pump inflow temperature, raising heat transfer temperature difference and comprehensive energy efficiency are than high CO2Air source heat pump synergy heating installation.
In order to achieve the above object, the present invention uses following technical scheme：A kind of CO2Air source heat pump synergy heating dress
Put, including the first compressor, regenerator, gas cooler, evaporator, heat exchanger, condenser, the second compressor and intermediate treatment
Device, the gas feed connection of first compressor and gas cooler, the gas vent and regenerator of the gas cooler
Connection, the regenerator are connected with the first compressor and heat exchanger respectively, and the heat exchanger connects with condenser and evaporator respectively
Connect, the pipeline that the heat exchanger is connected with evaporator is provided with first throttle valve, the pipeline that the heat exchanger is connected with condenser
Second throttle is provided with, the gas vent of the condenser is connected with the second compressor, second compressor and heat exchanger
Connection, the air inlet connection of the evaporator and intermediate processor, the gas outlet of the intermediate processor and oil return opening lead to respectively
Cross muffler and oil return pipe is connected with regenerator, the water inlet of the intermediate processor is connected with heating equipment return pipe, described
The delivery port of intermediate processor is connected with the inlet of condenser and gas cooler, and the condenser and gas cooler go out
Liquid mouth is connected with heating equipment water supply line.
Further, the intermediate processor includes closed cylindrical housing, and the top of the housing is provided with air inlet
And oil return opening, the bottom of the housing are provided with gas outlet, the upper and lower part in the housing be respectively equipped with top orifice plate and under
Portion's orifice plate, is connected with more gas pipelines between the top orifice plate and bottom orifice plate, outside the gas pipeline and be located at top
Enclosure interior space between orifice plate and bottom orifice plate forms water cavity, and the side wall of the water cavity is provided with water inlet and delivery port.
Further, housing sidewall top of the delivery port between top orifice plate and bottom orifice plate.
Further, housing sidewall bottom of the water inlet between top orifice plate and bottom orifice plate.
Further, the first throttle valve and second throttle are electric expansion valve.
The present invention has the advantages that compared with the prior art：
1st, CO of the invention2Air source heat pump synergy heating installation mainly include the first compressor, regenerator, gas cooler,
Evaporator, heat exchanger, condenser, the second compressor and intermediate processor, wherein heat exchanger, condenser, the second compressor and
Two choke valves form a simple heat pump and are nested among system, and the present invention is by changing CO2The operation of air source heat pump system
Principle, in CO2Intermediate processor and simple heat pump are added in air source heat pump system, the backwater of heating equipment is entered into CO2It is empty
10-20 DEG C of return water temperature is reduced by intermediate processor heat exchange before air supply heat pump, significantly reduces CO in heating installation2
The inflow temperature of air source heat pump gas cooler, has reached CO2Inflow temperature requirement of the air source heat pump less than 35 DEG C, it is middle
The heat for being collected into water is discharged into CO by processor2In coolant system, CO is improved2The heat of coolant system, then with gas cooling
Device carries out heat exchange, and CO is improved by heat equivalent exchanged form2The leaving water temperature of air source heat pump, so as to improve heating
The temperature of equipment water supply line reclaimed water.In addition, the simple heat that heat exchanger, condenser, the second compressor and second throttle form
Pump is arranged between regenerator and first throttle valve, by the CO after regenerator cools2Refrigerant reduces temperature again so that CO2
Opening increase, CO when refrigerant passes through first throttle valve2Refrigerant throughput increases, and is fully connect with air preferably in evaporator
Touch, more heats are absorbed in evaporator, discharge more heats again into water, further increase heating equipment water supply
The temperature of pipeline reclaimed water, and the reliability and stability that can further optimize the system operation, pass through intermediate processor and simple heat pump
Both combine and substantially increase CO2The comprehensive energy efficiency ratio of air source heat pump, not only solves traditional CO2Air source heat pump is radiating
Device central heating can not circular flow technical barrier, and cause comprehensive energy efficiency compare original CO2Air source heat pump improves
60%。
2nd, intermediate processor of the invention includes closed cylindrical housing, and air inlet is provided with closed cylindrical housing
Mouth, gas outlet, water inlet, delivery port and oil return opening, top orifice plate and bottom hole are provided with the inside of closed cylindrical housing
Plate, is connected with more gas pipelines between top orifice plate and bottom orifice plate, outside gas pipeline and be located at top orifice plate and bottom
Enclosure interior space between orifice plate forms water cavity, the CO of cryogenic high pressure2Medium and profit carburetion mixture are entered by air inlet
In top orifice plate superjacent air space in housing, due to CO2Media density is big to enter gas pipeline, and part moistens carburetion and passes through oil return opening
It is directly entered in the first compressor, the top orifice plate superjacent air space in housing causes CO2Medium and profit carburetion mixture gas-liquid point
From increase and balance gas superheat, the first compression can not be returned to because excessive temperature profit carburetion gasifies by avoiding in coolant system
In machine, the first compressor is caused to be damaged because of oil starvation.The backwater of heating equipment enters water cavity by water inlet, the high temperature in water cavity
Backwater by with the CO in gas pipeline2After medium counter flow heat exchange, the return water temperature in water cavity is effectively reduced into 10-20 degree, carried
CO in high gas pipeline2Medium temperature, CO2Medium enters unit refrigerant tube circulating system by gas outlet again, returning in water cavity
Water is circulated by delivery port into water system, solves CO2Source pump efficiency decay caused by return water temperature is too high is tight
Weight and the phenomenon of the too high shutdown of high pressure.The area in addition, the bottom orifice plate and housing bottom formation one in housing are left blank, passes through CO2It is situated between
Matter refrigerant energy will be with CO2The unsegregated lubricating oil of medium is cooled down, and avoids lubricating oil from can not being returned due to the too high gasification of temperature
The normal circulation into the first compressor, while serve the effect for collecting lubricating oil.The intermediate processor collection CO of the present invention2Refrigerant
Collect storage, CO2Refrigerant gas-liquid separation, circulation water inlet cooling, increase and balance gas superheat, lubricating oil is collected and oil return function
It is integrated, reduces production cost, not only reduces return water temperature, and improve CO2Refrigerant temperature, realize two in system
The purpose that secondary efficiency improves, improves the Energy Efficiency Ratio of system, realizes CO2The purpose of the reliable and secure operation of air source heat pump, it is
CO2Air source heat pump is laid a good foundation in the extensive use of field of heating.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of intermediate processor of the present invention.
Reference implication of the present invention is as follows：1st, the first compressor；2nd, regenerator；3rd, evaporator；4th, first throttle valve；5、
Heat exchanger；6th, gas cooler；7th, intermediate processor；8th, heating equipment return pipe；9th, heating equipment water supply line；10th, housing；
11st, air inlet；12nd, oil return opening；13rd, gas outlet；14th, top orifice plate；15th, bottom orifice plate；16th, gas pipeline；17th, water cavity；18、
Water inlet；19th, delivery port；20th, condenser；21st, the second compressor；22nd, second throttle.
Embodiment
Invention is described further with reference to the accompanying drawings and detailed description.
A kind of as shown in figure 1, CO2Air source heat pump synergy heating installation, including the first compressor 1, regenerator 2, gas
Cooler 6, evaporator 3, heat exchanger 5, condenser 20, the second compressor 21 and intermediate processor 7, the first compressor 1 and gas
The gas feed connection of cooler 6, the gas vent of gas cooler 6 are connected with regenerator 2, and regenerator 2 is pressed with first respectively
Contracting machine 1 and heat exchanger 5 are connected, and heat exchanger 5 is connected with condenser 20 and evaporator 3 respectively, and heat exchanger 5 is connected with evaporator 3
Pipeline is provided with first throttle valve 4, and the pipeline that heat exchanger 5 is connected with condenser 20 is provided with second throttle 22, first throttle
Valve 4 and second throttle 22 are electric expansion valve, and the gas vent of condenser 20 is connected with the second compressor 21, the second compressor
21 are connected with heat exchanger 5, and evaporator 3 is connected with the air inlet 11 of intermediate processor 7, the gas outlet 13 of intermediate processor 7 and return
Hydraulic fluid port 12 is connected by muffler and oil return pipe with regenerator 2 respectively, water inlet 18 and the heating equipment backwater of intermediate processor 7
Pipe 8 is connected, and the delivery port 19 of intermediate processor 7 is connected with the inlet of condenser 20 and gas cooler 6, and condenser 20 is gentle
The liquid outlet of body cooler 6 is connected with heating equipment water supply line 9.
As shown in Fig. 2 intermediate processor 7 includes closed cylindrical housing 10, the top of housing 10 is provided with air inlet 11
With oil return opening 12, the bottom of housing 10 is provided with gas outlet 13, and the upper and lower part in housing 10 is respectively equipped with the He of top orifice plate 14
Bottom orifice plate 15, is connected with more gas pipelines 16 between top orifice plate 14 and bottom orifice plate 15, outside gas pipeline 16 and be located at
The inner space of housing 10 between top orifice plate 14 and bottom orifice plate 15 forms water cavity 17, and the side wall of water cavity 17 is provided with water inlet
18 and delivery port 19, housing 10 side wall upper part of the delivery port 19 between top orifice plate 14 and bottom orifice plate 15, water inlet 18
The lower sidewall of housing 10 between top orifice plate 14 and bottom orifice plate 15.
In use, CO2Refrigerant is compressed into the CO of HTHP through the first compressor 12Enter after gas in gas cooler 6
To the water progress heat exchange in the water pipe of gas cooler 6, the water in the water pipe of gas cooler 6 passes through heating equipment after absorbing heat
Water supply line 9 is heated into heating equipment, while after the heat exchange of gas cooler 6, the CO of cryogenic high pressure2Gas enters
Enter in regenerator 2 further reduces CO after reduction temperature into heat exchanger 52The temperature of refrigerant so that CO2Refrigerant passes through first segment
Opening increase, CO when flowing valve 42Refrigerant throughput increases, and is preferably fully contacted with air in evaporator 3, in evaporator 3
More heats are absorbed, then the CO of cryogenic high pressure2Medium and profit carburetion mixture enter intermediate processor 7 by air inlet 11
In the space above of top orifice plate 14 in housing 10, due to CO2Media density is big to enter gas pipeline 16, and part is moistened carburetion and passed through
Oil return opening 12 is directly over regenerator 2 and entered in the first compressor 1, and the space above of top orifice plate 14 in housing 10 can cause
CO2Medium and profit carburetion mixture gas-liquid separation, avoid in coolant system because excessive temperature profit carburetion gasification can not return to
In first compressor 1, the first compressor 1 is caused to be damaged because of oil starvation.The backwater of heating equipment（It it is about 50 DEG C by national standard）Pass through
Water inlet 18 enters water cavity 17, the high-temperature tempering in water cavity 17 by with the CO in gas pipeline 162After media for heat exchange, by water cavity
Return water temperature in 17 effectively reduces 10-20 degree, improves the CO in gas pipeline 162Medium temperature, CO2Medium passes through outlet again
Mouth 13, which enters in regenerator 2, to be circulated, with CO2The unsegregated lubricating oil of medium passes through CO2Medium refrigerant is in bottom orifice plate 15 and housing
Cool down, lubricating oil is collected, the backwater in water cavity 17 enters gas by delivery port 19 in the area of leaving blank that 10 bottoms are formed
In cooler 6 and condenser 20 with CO2Refrigerant carries out heat exchange（Heat exchanger 5 is reclaimed and by second after exchanging heat to heat
Compressor 21 is compressed into high temperature and high pressure gas）, heated after absorbing heat into heating equipment.
Claims (5)
- A kind of 1. CO2Air source heat pump synergy heating installation, it is characterised in that：Including the first compressor（1）, regenerator（2）, gas Body cooler（6）, evaporator（3）, heat exchanger（5）, condenser（20）, the second compressor（21）And intermediate processor（7）, it is described First compressor（1）With gas cooler（6）Gas feed connection, the gas cooler（6）Gas vent and backheat Device（2）Connection, the regenerator（2）Respectively with the first compressor（1）And heat exchanger（5）Connection, the heat exchanger（5）Respectively with Condenser（20）And evaporator（3）Connection, the heat exchanger（5）With evaporator（3）The pipeline of connection is provided with first throttle valve （4）, the heat exchanger（5）With condenser（20）The pipeline of connection is provided with second throttle（22）, the condenser（20）'s Gas vent and the second compressor（21）Connection, second compressor（21）With heat exchanger（5）Connection, the evaporator（3） With intermediate processor（7）Air inlet（11）Connection, the intermediate processor（7）Gas outlet（13）And oil return opening（12）Respectively Pass through muffler and oil return pipe and regenerator（2）It is connected, the intermediate processor（7）Water inlet（18）With heating equipment backwater Pipe（8）Connection, the intermediate processor（7）Delivery port（19）With condenser（20）And gas cooler（6）Inlet connect Connect, the condenser（20）And gas cooler（6）Liquid outlet and heating equipment water supply line（9）Connection.
- A kind of 2. CO according to claim 12Air source heat pump synergy heating installation, it is characterised in that：The intermediate treatment Device（7）Including closed cylindrical housing（10）, the housing（10）Top be provided with air inlet（11）And oil return opening（12）, institute The bottom for stating housing is provided with gas outlet（13）, the housing（10）Interior upper and lower part is respectively equipped with top orifice plate（14）With under Portion's orifice plate（15）, the top orifice plate（14）With bottom orifice plate（15）Between be connected with more gas pipelines（16）, the flue Road（16）Outside and be located at top orifice plate（14）With bottom orifice plate（15）Between housing（10）Inner space forms water cavity（17）, The water cavity（17）Side wall be provided with water inlet（18）And delivery port（19）.
- A kind of 3. CO according to claim 22Air source heat pump synergy heating installation, it is characterised in that：The delivery port （19）Positioned at top orifice plate（14）With bottom orifice plate（15）Between housing（10）Side wall upper part.
- A kind of 4. CO according to claim 22Air source heat pump synergy heating installation, it is characterised in that：The water inlet （18）Positioned at top orifice plate（14）With bottom orifice plate（15）Between housing（10）Lower sidewall.
- A kind of 5. CO according to claim 12Air source heat pump synergy heating installation, it is characterised in that：The first throttle Valve（4）And second throttle（22）For electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016117.9A CN107676845A (en) | 2017-10-26 | 2017-10-26 | A kind of CO2Air source heat pump synergy heating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016117.9A CN107676845A (en) | 2017-10-26 | 2017-10-26 | A kind of CO2Air source heat pump synergy heating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676845A true CN107676845A (en) | 2018-02-09 |
Family
ID=61143010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711016117.9A Pending CN107676845A (en) | 2017-10-26 | 2017-10-26 | A kind of CO2Air source heat pump synergy heating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111936809A (en) * | 2018-06-27 | 2020-11-13 | Lg电子株式会社 | Vacuum insulation body and refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203837330U (en) * | 2014-05-13 | 2014-09-17 | 甘肃一德新能源设备有限公司 | CO2 heat pump heat exchange enthalpy increase device |
| CN105042672A (en) * | 2015-09-01 | 2015-11-11 | 中国铁道科学研究院 | Air source CO2 heat pump system suitable for connecting heating radiators |
| CN205351464U (en) * | 2016-01-18 | 2016-06-29 | 西安交通大学 | Stride critical CO2 heat pump heating system with function fast defrosts |
| CN205388391U (en) * | 2015-12-18 | 2016-07-20 | 珠海凌达压缩机有限公司 | Compressor and dispense thereof |
| CN207486937U (en) * | 2017-10-26 | 2018-06-12 | 甘肃一德节能环保有限公司 | A kind of CO2Air source heat pump synergy heating installation |
-
2017
- 2017-10-26 CN CN201711016117.9A patent/CN107676845A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203837330U (en) * | 2014-05-13 | 2014-09-17 | 甘肃一德新能源设备有限公司 | CO2 heat pump heat exchange enthalpy increase device |
| CN105042672A (en) * | 2015-09-01 | 2015-11-11 | 中国铁道科学研究院 | Air source CO2 heat pump system suitable for connecting heating radiators |
| CN205388391U (en) * | 2015-12-18 | 2016-07-20 | 珠海凌达压缩机有限公司 | Compressor and dispense thereof |
| CN205351464U (en) * | 2016-01-18 | 2016-06-29 | 西安交通大学 | Stride critical CO2 heat pump heating system with function fast defrosts |
| CN207486937U (en) * | 2017-10-26 | 2018-06-12 | 甘肃一德节能环保有限公司 | A kind of CO2Air source heat pump synergy heating installation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111936809A (en) * | 2018-06-27 | 2020-11-13 | Lg电子株式会社 | Vacuum insulation body and refrigerator |
| CN111936809B (en) * | 2018-06-27 | 2022-08-26 | Lg电子株式会社 | Vacuum insulation body and refrigerator |
| US11740008B2 (en) | 2018-06-27 | 2023-08-29 | Lg Electronics Inc. | Vacuum adiabatic body and refrigerator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180209 |