CN106500393A - There is the multi-connected machine heat pump of three-level centrifugal compressor - Google Patents
There is the multi-connected machine heat pump of three-level centrifugal compressor Download PDFInfo
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- CN106500393A CN106500393A CN201610990125.2A CN201610990125A CN106500393A CN 106500393 A CN106500393 A CN 106500393A CN 201610990125 A CN201610990125 A CN 201610990125A CN 106500393 A CN106500393 A CN 106500393A
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- Prior art keywords
- compression chamber
- stage
- valve
- stage compression
- heat pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of multi-connected machine heat pump with three-level centrifugal compressor，Including compressor、Cross valve、Gas-liquid separator、Condenser、Trachea stop valve、Oil eliminator，Main electric expansion valve、Liquid pipe stop valve、Vaporizer，The compressor includes the one stage of compression chamber being sequentially connected with、Two-stage compression chamber and three stage compression chamber，The air inlet in the one stage of compression chamber is connected with the air vent of the gas-liquid separator，The air vent in the one stage of compression chamber is connected with the first three-way valve，The other two ends of first three-way valve are connected with the air inlet and air vent in the two-stage compression chamber respectively，The air vent in the two-stage compression chamber is also associated with the second three-way valve，The other end of second three-way valve is connected with the air inlet and air vent in the three stage compression chamber respectively，The air vent in the three stage compression chamber is connected with the oil eliminator.This heat pump can meet the performance requirement under the different load of system, and under sub-load, system effectiveness is high.
Description
Technical field
The present invention relates to a kind of heat pump, specifically, be related to a kind of with the multi-joint of three-level centrifugal compressor
Machine heat pump..
Background technology
Adopting scroll compressor more in existing the multi-connected machine heat pump field, especially under low temperature ambient conditions, compressor
Less efficient, and centrifugal compressor is used for large-scale cooling-water machine system, although efficiency is higher than scroll compressor, but by
Limit in its size and pressure ratio, it is impossible to for the multiple on-line system of little cold, multi-connected machine can not be applied transformations to well
System.Multi-connected machine heat pump all constantly can reduce with the reduction of ambient temperature, heating capacity and heating efficiency, and people are to heating capacity
Demand be but continuously increased with the decline of ambient temperature.Major technique reason is the scroll compression that normal air source heat pump is adopted
When contracting machine is worked at low ambient temperatures, the delivery temperature of compressor can exceed the working range that compressor is allowed, and compressor occurs
Frequently start and stop, it is impossible to normal work, when ambient temperature is dropped to below 5 DEG C, evaporator surface can also frosting so that heat exchange system
Number reduces, and heat pump needs continuous defrost to ensure the normal operation of system, and greatly reduces the comfortableness of user.In addition,
In order to absorb heat from outdoor air, its evaporating temperature will be preferably minimized heat pump, now the inspiratory volume increase of compressor, system
Refrigerant circulation reduces, and the pressure ratio increase of compressor, and volumetric efficiency declines, and heat pump heating capacity and COP will significantly
Reduce.The heating capacity for improving air source heat pump under worst cold case is also the problem that air-conditioning circle needs to solve all the time.
In order to improve the heating capacity of multiple on-line system under worst cold case, air-conditioning heat pump researcher did extensive work, industry
Interior enterprise is proposed low-temperature strong-heating multi-split system in recent years successively, employs mostly quasi- two-stage compression system, also has and passes through
Increase the mode of supplementary module, release real two-stage compressor multiple on-line system.But, system is due to its two-stage compression module
It is separately provided, needs to be connected with host module by pipeline during in-site installation, causes floor space to increase, and it is difficult to increase installation
Degree, system cannot realize that the outer machine multiple stage of big number is in parallel, it is impossible to meet the requirement of bigger load.
Content of the invention
The present invention is separately provided for the multi-stage compression module for solving existing multi-connected machine heat pump, is needed during in-site installation
It is connected with host module by pipeline, is increased with floor space, a series of problems, such as installation difficulty is high, it is proposed that one kind has
The multi-connected machine heat pump of three-level centrifugal compressor, can solve the above problems.
In order to solve above-mentioned technical problem, the present invention is employed the following technical solutions and is achieved：
A kind of multi-connected machine heat pump with three-level centrifugal compressor, including compressor, cross valve and the cross valve
The trachea of the e ends connection of the condenser and the cross valve of the c ends connection of the gas-liquid separator and the cross valve of the connection of s ends
The oil eliminator of the d ends connection of stop valve and the cross valve, the main electric expansion valve being connected with the condenser and described
The evaporation that the connected liquid pipe stop valve of main electric expansion valve, two ends are connected with the trachea stop valve and liquid pipe stop valve respectively
Device, the compressor include one stage of compression chamber, two-stage compression chamber and the three stage compression chamber being sequentially connected with, the one stage of compression chamber
Air inlet is connected with the air vent of the gas-liquid separator, and the air vent in the one stage of compression chamber is connected with the first three-way valve, institute
The other two ends for stating the first three-way valve are connected with the air inlet and air vent in the two-stage compression chamber respectively, the two-stage compression chamber
Air vent be also associated with the second three-way valve, the air inlet respectively with the three stage compression chamber of the other end of second three-way valve
Mouth and air vent connect, and the air vent in the three stage compression chamber is connected with the oil eliminator.
Further, described multi-connected machine heat pump also includes that the first sheet heat exchanger, first sheet heat exchanger include
First heat exchanger channels and the first air supply passage, first heat exchanger channels are connected to the main electric expansion valve and liquid pipe stop valve
Between, one end of first air supply passage is connected with the main electric expansion valve by the first electric expansion valve, other end
It is connected with the air inlet in the two-stage compression chamber.
Further, described multi-connected machine heat pump also includes that the second sheet heat exchanger, second sheet heat exchanger include
Second heat exchanger channels and the second air supply passage, described second heat exchanger channels one end are connected with first heat exchanger channels, and in addition one
End is connected with the liquid pipe stop valve, and described second air supply passage one end is logical with the described first heat exchange by the second electric expansion valve
Road connects, and other end is connected with the air inlet in the three stage compression chamber.
Further, the compressor be centrifugal compressor, the one stage of compression chamber, two-stage compression chamber and three stage compression
Intracavity is respectively arranged with impeller, and the impeller size of the one stage of compression chamber, two-stage compression chamber and three stage compression intracavity is sequentially passed
Increase.
Further, the outfan of the condenser is connected with the input of the gas-liquid separator also by a path,
Liquid injection valve is provided with the path.
Further, the outfan of the oil eliminator is connected with the input of the gas-liquid separator by feather valve.
Compared with prior art, advantages of the present invention and good effect are：The present invention with three-level centrifugal compressor
Multi-connected machine heat pump, by adjusting the flow direction of two three-way valve, one-level can be realized respectively, two grades, the different series connection of three-level
Combination, to meet the performance requirement under the different load of system, limit of power is adjustable from 2Hp-80Hp, may replace one or more
Scroll compressor, under sub-load, system effectiveness is high, therefore, outside the advantage for remaining conventional centrifugal compressor, also
Compressor operation scope can be widened, to multiple on-line system, even unit machine system, domestic air conditioning can use, so as to can be real
Existing energy-efficient.
After the detailed description of embodiment of the present invention is read in conjunction with the accompanying, the other features and advantages of the invention will become more
Plus it is clear.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of embodiment system of the multi-connected machine heat pump with three-level centrifugal compressor proposed by the invention
System figure.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiment.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one, the present embodiment propose a kind of multi-connected machine heat pump with three-level centrifugal compressor, such as Fig. 1
Shown, the gas-liquid separator 4 of s ends connection and the c ends of cross valve 2 including compressor 1, cross valve 2 and cross valve 2 connect
The oil eliminator 14 of the d ends connection of the trachea stop valve 3 and cross valve 2 of the e ends connection of condenser 5 and cross valve 2, with condensation
The main electric expansion valve 6 of the connection of device 5, the liquid pipe stop valve 7, two ends that is connected with main electric expansion valve 6 respectively with trachea stop valve 3
The vaporizer 8 connected with liquid pipe stop valve 7, compressor 1 include one stage of compression chamber 10, the two-stage compression chamber 11 and three being sequentially connected with
Level compression chamber 12, the air inlet in one stage of compression chamber 10 are connected with the air vent of gas-liquid separator 4, the air vent in one stage of compression chamber 10
The first three-way valve 9 is connected with, the other two ends of the first three-way valve 9 are connected with the air inlet and air vent in two-stage compression chamber 11 respectively
Connect, the air vent in two-stage compression chamber 11 is also associated with the second three-way valve 13, the other end of the second three-way valve 13 respectively with three-level
The air inlet of compression chamber 12 and air vent connection, the air vent in three stage compression chamber 12 are connected with oil eliminator 14.The tool of the present invention
There are the multi-connected machine heat pump of three-level centrifugal compressor, compressor to include one stage of compression chamber, two-stage compression chamber, three stage compression
Chamber, three are designed for monolithic construction, need not be respectively mounted, and by adjusting the flow direction of two three-way valve, can realize one-level respectively
Compression chamber, two-stage compression chamber, the different tandem compounds in three stage compression chamber, to meet the performance requirement under the different load of system,
Limit of power is adjustable from 2Hp-80Hp, may replace one or more scroll compressors, and under sub-load, system effectiveness is high, this
Outward, the compressor in the system, can also be by compressor operation scope outside the advantage for remaining conventional centrifugal compressor
Widen, to multiple on-line system, even unit machine system, domestic air conditioning can use, energy-efficient so as to can achieve.
Multi-connected machine heat pump in the present embodiment also includes the first sheet heat exchanger 15, as shown in figure 1, the first sheet heat exchanger
15 include that the first heat exchanger channels and the first air supply passage, the first heat exchanger channels are connected to main electric expansion valve 6 and liquid pipe stop valve 7
Between, one end of the first air supply passage is connected with main electric expansion valve 6 by the first electric expansion valve 16, other end with two grades
The air inlet connection of compression chamber 11.When the pressure at expulsion of one stage of compression chamber output is inadequate, by controlling the first electric expansion valve
16 open, and are which carries out QI invigorating, to improve the pressure at expulsion in one stage of compression chamber, improve compression efficiency.
As a same reason, multi-connected machine heat pump also includes that the second sheet heat exchanger 17, the second sheet heat exchanger 17 include second
Heat exchanger channels and the second air supply passage, second heat exchanger channels one end are connected with the first heat exchanger channels, and other end is ended with liquid pipe
Valve 7 connects, and second air supply passage one end is connected with the first heat exchanger channels by the second electric expansion valve 18, other end and three-level
The air inlet connection of compression chamber 12.When the pressure at expulsion of two-stage compression chamber output is inadequate, by controlling the second electric expansion valve
18 open, and are which carries out QI invigorating, to improve the pressure at expulsion in two-stage compression chamber.
Additionally, the first sheet heat exchanger 15 and the second sheet heat exchanger 17 can also adopt flash tank to substitute realize, equally can be with
It is embodied as two-stage compression chamber, the function of three stage compression chamber QI invigorating.
Compressor 1 is centrifugal compressor, divides in the one stage of compression chamber 10, two-stage compression chamber 11 and three stage compression chamber 12
The impeller size not being provided with impeller, and one stage of compression chamber 10, two-stage compression chamber 11 and three stage compression chamber 12 is sequentially incremented by.Make
Compressed capability per one-level is variant.Control logic then be able to can be distinguished according to the difference of load, the flow direction of regulating three-way valve
One-level is realized, two grades, the different tandem compounds of three-level, to meet the performance requirement under the different load of system.One is for example arranged
It is 40% that the load-bearing capacity of level compression chamber 10 is the load-bearing capacity in 10%, two-stage compression chamber 11, the load-bearing capacity in three stage compression chamber 12
For 50%：
When compressor capacity load is 10%, using the first three-way valve 9, and two-stage compression chamber 11 is bypassed by pipeline, while utilizing
The bypass of three stage compression chamber 12 is fallen by the second three-way valve 13 and pipeline, is now only compressed using one stage of compression chamber 10, is met
Performance requirement.
When compressor capacity desirable load is 50%, 9 flow of the first three-way valve is oriented to and adjusts to two-stage compression chamber 11, profit
The bypass of three stage compression chamber 12 is fallen with the second three-way valve 13 and pipeline, now realize one stage of compression chamber 10+ two-stage compressions chamber 11
Tandem compound, meet performance requirement.
When compressor capacity desirable load is 100%, 9 flow of the first three-way valve is oriented to and adjusts to two-stage compression chamber 11, the
Two three-way valve, 13 flow is oriented to and adjusts to three stage compression chamber 12, now realizes one stage of compression chamber 10+ two-stage compressions chamber 11+ three-level pressures
The tandem compound in contracting chamber 12, meets performance requirement.
The outfan of condenser 5 is connected with the input of gas-liquid separator 4 also by a path, is provided with spray on the path
Liquid valve 19.
The outfan of oil eliminator 14 is connected with the input of gas-liquid separator 4 by feather valve 20.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change, remodeling, interpolation or replacement that the those of ordinary skill in domain is made in the essential scope of the present invention, should also belong to this
Bright protection domain.
Claims (6)
1. a kind of multi-connected machine heat pump with three-level centrifugal compressor, including compressor, cross valve and the cross valve
S ends connection gas-liquid separator and the cross valve c ends connection condenser and the cross valve e ends connection gas
The oil eliminator of the d ends connection of pipe stop valve and the cross valve, the main electric expansion valve being connected with the condenser and institute
Liquid pipe stop valve, the evaporation that is connected respectively of two ends that main electric expansion valve is connected is stated with the trachea stop valve and liquid pipe stop valve
Device, it is characterised in that：The compressor includes one stage of compression chamber, two-stage compression chamber and the three stage compression chamber being sequentially connected with, described
The air inlet in one stage of compression chamber is connected with the air vent of the gas-liquid separator, and the air vent in the one stage of compression chamber is connected with
One three-way valve, the other two ends of first three-way valve are connected with the air inlet and air vent in the two-stage compression chamber respectively, institute
The air vent for stating two-stage compression chamber is also associated with the second three-way valve, the other end of second three-way valve respectively with the three-level
The air inlet of compression chamber and air vent connection, the air vent in the three stage compression chamber are connected with the oil eliminator.
2. multi-connected machine heat pump according to claim 1, it is characterised in that：Described multi-connected machine heat pump also includes
First sheet heat exchanger, first sheet heat exchanger include the first heat exchanger channels and the first air supply passage, first heat exchanger channels
It is connected between the main electric expansion valve and liquid pipe stop valve, one end of first air supply passage passes through the first electronic expansion
Valve is connected with the main electric expansion valve, and other end is connected with the air inlet in the two-stage compression chamber.
3. multi-connected machine heat pump according to claim 2, it is characterised in that：Described multi-connected machine heat pump also includes
Second sheet heat exchanger, second sheet heat exchanger include the second heat exchanger channels and the second air supply passage, second heat exchanger channels
One end is connected with first heat exchanger channels, and other end is connected with the liquid pipe stop valve, described second air supply passage one end
It is connected with first heat exchanger channels by the second electric expansion valve, other end is connected with the air inlet in the three stage compression chamber
Connect.
4. the multi-connected machine heat pump according to any one of claim 1-3, it is characterised in that：The compressor is centrifugal
Compressor, the one stage of compression chamber, two-stage compression chamber and three stage compression intracavity are respectively arranged with impeller, and the one stage of compression
The impeller size in chamber, two-stage compression chamber and three stage compression intracavity is sequentially incremented by.
5. the multi-connected machine heat pump according to any one of claim 1-3, it is characterised in that：The outfan of the condenser
It is connected with the input of the gas-liquid separator also by a path, on the path, is provided with liquid injection valve.
6. the multi-connected machine heat pump according to any one of claim 1-3, it is characterised in that：The output of the oil eliminator
End is connected with the input of the gas-liquid separator by feather valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990125.2A CN106500393B (en) | 2016-11-10 | 2016-11-10 | Multi-split heat pump system with three-stage centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990125.2A CN106500393B (en) | 2016-11-10 | 2016-11-10 | Multi-split heat pump system with three-stage centrifugal compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500393A true CN106500393A (en) | 2017-03-15 |
| CN106500393B CN106500393B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990125.2A Active CN106500393B (en) | 2016-11-10 | 2016-11-10 | Multi-split heat pump system with three-stage centrifugal compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489467A (en) * | 2017-08-03 | 2017-12-19 | 中国科学院理化技术研究所 | Compressed air water-pumping energy-storage system |
| CN108444138A (en) * | 2018-04-17 | 2018-08-24 | 山东美琳达再生能源开发有限公司 | A kind of Two-stage Compression low-temperature air source heat pump unit and method with refrigerating function |
| CN108489130A (en) * | 2018-06-06 | 2018-09-04 | 深圳市派沃新能源科技股份有限公司 | A kind of screw single machine three stage compression heat pump heating system and control method |
| CN111237928A (en) * | 2020-01-19 | 2020-06-05 | 珠海格力电器股份有限公司 | Double-temperature double-flash air conditioner refrigerating system |
| CN114992910A (en) * | 2022-05-26 | 2022-09-02 | 浙江中广电器集团股份有限公司 | Three-stage compressed air source heat pump unit adopting flash tank and economizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB535738A (en) * | 1938-12-24 | 1941-04-21 | Sulzer Ag | Improvements in or relating to pumps |
| DE202004001051U1 (en) * | 2004-01-27 | 2004-04-15 | BSW Verfahrenstechnik GmbH Ingenieur- und Beratungsbüro | Multi-headed pump used as a membrane pump for producing a vacuum comprises shut-off and switching devices integrated in the suction and pressure lines between the pump heads |
| US20110038737A1 (en) * | 2007-11-01 | 2011-02-17 | Ronald David Conry | Multi-stage compressor |
| US20130219927A1 (en) * | 2012-02-23 | 2013-08-29 | Byeongsu Kim | Air conditioner and control method thereof |
| CN206269418U (en) * | 2016-11-10 | 2017-06-20 | 青岛海尔中央空调有限公司 | Multi-connected machine heat pump with three-level centrifugal compressor |
-
2016
- 2016-11-10 CN CN201610990125.2A patent/CN106500393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB535738A (en) * | 1938-12-24 | 1941-04-21 | Sulzer Ag | Improvements in or relating to pumps |
| DE202004001051U1 (en) * | 2004-01-27 | 2004-04-15 | BSW Verfahrenstechnik GmbH Ingenieur- und Beratungsbüro | Multi-headed pump used as a membrane pump for producing a vacuum comprises shut-off and switching devices integrated in the suction and pressure lines between the pump heads |
| US20110038737A1 (en) * | 2007-11-01 | 2011-02-17 | Ronald David Conry | Multi-stage compressor |
| US20130219927A1 (en) * | 2012-02-23 | 2013-08-29 | Byeongsu Kim | Air conditioner and control method thereof |
| CN206269418U (en) * | 2016-11-10 | 2017-06-20 | 青岛海尔中央空调有限公司 | Multi-connected machine heat pump with three-level centrifugal compressor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489467A (en) * | 2017-08-03 | 2017-12-19 | 中国科学院理化技术研究所 | Compressed air water-pumping energy-storage system |
| CN107489467B (en) * | 2017-08-03 | 2023-11-14 | 中国科学院理化技术研究所 | Compressed air pumping energy storage system |
| CN108444138A (en) * | 2018-04-17 | 2018-08-24 | 山东美琳达再生能源开发有限公司 | A kind of Two-stage Compression low-temperature air source heat pump unit and method with refrigerating function |
| CN108489130A (en) * | 2018-06-06 | 2018-09-04 | 深圳市派沃新能源科技股份有限公司 | A kind of screw single machine three stage compression heat pump heating system and control method |
| CN111237928A (en) * | 2020-01-19 | 2020-06-05 | 珠海格力电器股份有限公司 | Double-temperature double-flash air conditioner refrigerating system |
| CN111237928B (en) * | 2020-01-19 | 2021-02-26 | 珠海格力电器股份有限公司 | Double-temperature double-flash air conditioner refrigerating system |
| CN114992910A (en) * | 2022-05-26 | 2022-09-02 | 浙江中广电器集团股份有限公司 | Three-stage compressed air source heat pump unit adopting flash tank and economizer |
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| Publication number | Publication date |
|---|---|
| CN106500393B (en) | 2023-09-29 |
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