CN104114962A - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- CN104114962A CN104114962A CN201280062075.1A CN201280062075A CN104114962A CN 104114962 A CN104114962 A CN 104114962A CN 201280062075 A CN201280062075 A CN 201280062075A CN 104114962 A CN104114962 A CN 104114962A
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- CN
- China
- Prior art keywords
- compressor stage
- heat exchanger
- interface
- flow
- heat pump
- 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.)
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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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
- 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
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention relates to a heat pump (2), which can be changed over between cooling mode and heating mode, having a first heat exchanger (4), a second heat exchanger (6), two compressor stages (8, 10) for compressing a medium and a medium pressure bottle (12), inserted between the compressor stages (6, 8) and the second compressor stage (10) for phase separation of the fluid medium. Downstream of the second compressor stage (8), a changeover valve (16) is arranged, by means of which a flow connection between the second compressor stage (8) and the second heat exchanger (6) can be established in cooling mode, and a flow connection between the second compressor stage (8) and the first heat exchanger (4) can be established in heating mode.
Description
Technical field
The present invention relates to the heat pump that can change between refrigeration work and heating work, this heat pump has first heat exchanger and second heat exchanger, between these heat exchangers, energy can transmit to one or the other direction, and has a compressor set.
Background technology
Described in beginning, the heat pump of type is known in prior art.This heat pump for being sent to a second container by heat energy by first container in the situation that of consumed work.Conventionally heat pump carrys out work with fluid, this fluid when low pressure, the in the situation that of input heat, be evaporated and be compressed to high pressure after be condensed again at quantity of heat given up in the situation that.For these pressure, will select in this wise, i.e. the temperature of the relative thermal source of temperature of phase conversion or the temperature of radiator have a gap enough transmitting for heat.
Heat pump is to carry out work by a fluid circulation loop with regard to its simplest configuration, and this closed circuit has: an evaporimeter, and fluid or medium evaporate in endergonic situation therein; Connection is thereafter, driven compressor, and medium is compressed in the situation that applying mechanical power therein; A back to back condenser, fluid is liquefied the in the situation that of output energy therein; And last is connected to condenser flow controller below, fluid is depressurized therein.Flow controller is connected with evaporimeter again at its outlet side, makes thus closed circuit closed.
In addition known convertible heat pump, two heat exchangers that are wherein provided with connect into condenser or evaporimeter a little while, or conversely, connect into evaporimeter and condenser a little while.
Efficiency or power factor for traditional convertible heat pump are restricted technically.Desired, the efficiency of heat pump or power factor are improved.
Summary of the invention
Task of the present invention is, provides the convertible heat pump with large temperature fall, and it has than the higher efficiency of the convertible heat pump of known tradition or higher power factor.
This task solves the heat pump by according to claim 1.Other configuration of the present invention is the theme of dependent claims.
According to heat pump of the present invention, that can change between refrigeration work and heating work, have: one for absorbing energy in refrigeration work and export the first heat exchanger of energy in heating work, it forms thermal coupling with treating refrigeration or object to be heated.One in refrigeration work, export energy and in heating work endergonic the second heat exchanger, it is used as radiator or thermal source.
For compressed fluid or medium are provided with first compressor stage and one, be connected to the second compressor stage after the first compressor stage, the medium that the latter has made to compress in the first compressor stage compresses further.Therefore can reach the higher degree of compression and can realize large temperature fall by two stages of compression, can reach higher condensation temperature again thus.
The pressure level in the first compressor stage exit equals the pressure level of the second compressor stage porch in the case.
Between the first compressor stage and the second compressor stage, be connected an intermediate pressure bottle, the phase separation of liquid medium and the deposition of liquid medium have occurred therein.In intermediate pressure bottle, rise, by the precompressed hot gas of the first compressor stage, be connected at its upstream in the second compressor stage after middle pressure bottle compressed and overheated further.
According to the present invention, also propose, the second compressor stage is connecting a switching valve in downstream, by this switching valve, in refrigeration work, can through-flowly be connected and can set up through-flow connection between the second compressor stage and the first heat exchanger in heating work setting up between the second compressor stage and the second heat exchanger.Can reach in this way: depending on required working method, heat exchanger can be used as evaporimeter or carrys out work as condenser.
According to a first possible configuration, can be provided with an inner hot conveyer, it first-class by intermediate pressure bottle take out and be connected to the first compressor stage above and its second takes out and is connected to before by compressor intermediate pressure bottle a liquid output after so that liquid medium separated and that export by the liquid output of intermediate pressure bottle sends energy to the gas that flows to the first compressor stage in intermediate pressure bottle.Can reach in this way the additional overheated of medium to be compressed.
Another possible configuration according to the present invention can arrange: a switching valve has four interfaces, wherein first interface is connected through-flowly with the first compressor stage, the second interface is connected through-flowly with the first heat exchanger, if the 3rd interface and the first compressor stage or – are provided with, – is connected through-flowly with hot conveyer and the 4th interface is connected through-flowly with the second heat exchanger.
Connection is set in the scope of this configuration in this wise: if the second compressor stage is connected and the first heat exchanger and the first compressor stage or – are provided with – and are connected in refrigeration work through-flowly with the second heat exchanger through-flowly with hot conveyer, and the second compressor stage is connected and the second heat exchanger and the first compressor stage or through-flow with hot conveyer connection through-flowly with the first heat exchanger in heating work.Therefore intensively to reach the conversion between heating work and refrigeration work on simple mode space.
Another possible configuration according to the present invention can arrange a conversion equipment, this conversion equipment makes to be decompressed to from the first heat exchanger or from the second heat exchanger and by an expansion valve being connected to after heat exchanger the coupling part that a medium on intermediate pressure leads between the first compressor stage and intermediate pressure bottle, so that by the precompressed medium of the first compressor stage and from medium corresponding hiigh pressure stage, that be depressurized on intermediate pressure, mutually mix and flow to intermediate pressure bottle, the phase that and then medium here occurs is separated.
Another possible configuration according to the present invention can arrange: conversion equipment has four interfaces, wherein first interface by the first expansion valve through-flow with the first heat exchanger be connected, the second interface by the second expansion valve through-flow with the second heat exchanger be connected, the 3rd interface be connected through-flowly with hot conveyer and the 4th interface with the first compressor stage through-flow with coupling part between intermediate pressure bottle be connected.
By this conversion equipment in refrigeration work the second heat exchanger by the second expansion valve with the first compressor stage through-flow with coupling part between intermediate pressure bottle be connected and internal heat conveyer by the first expansion valve through-flow with the first heat exchanger be connected.Wherein in heating work the first heat exchanger by the first expansion valve with the first compressor stage through-flow with coupling part between intermediate pressure bottle be connected and internal heat conveyer by the second expansion valve through-flow with the second heat exchanger be connected.Can be gathered in this way on the three unities and carry out the conversion between refrigeration work and heating work, this has reduced the expense of locus and has reduced member cost.
Another possible configuration according to the present invention can arrange: the first compressor stage and the second compressor stage are disposed in a common compressor.Two compressor stages for example can be disposed on a common axle, wherein by the precompressed medium of the first compressor stage, from compressor, are exported in intermediate pressure bottle, and medium flows to the second compressor stage again by this bottle.Can realize in this way a compact structure and reduce required number of components.
Another possible configuration according to the present invention can arrange: the first compressor stage and the second compressor stage realize by a single-stage compressor with intermediate injection device.
Another possible configuration according to the present invention can arrange: the first heat exchanger is that a board-like hot conveyer and/or the second heat exchanger are a stacked hot conveyer.
Another possible configuration according to the present invention can arrange: conversion equipment and/or switching valve are configured cross valve, and wherein in corresponding dislocation, every two interfaces form through-flow connection in couples mutually.This switching valve is configuration in this wise, and it has a small amount of moving component is just enough to make corresponding switching valve reliable in the extreme.
Another possible configuration according to the present invention can arrange: conversion equipment is configured the structure of four one way stop peturn valves, wherein each interface is connected with every two interfaces in this wise by each the middle one way stop peturn valve connecting, so that according to every next one way stop peturn valve of the pressure condition on interface, be cut off and another is opened, every two interfaces are mutual thus connects through-flowly.This conversion equipment for example can be configured has four correspondingly directed one way stop peturn valves and have the conduit ring of the interface being connected in therebetween.
In another configuration of the present invention, the outlet of the gas vent of intermediate pressure bottle, the first compressor stage and the entrance of the second compressor stage are connected to a star convergence point, so that can not need intermediate pressure bottle.
Depending on form of implementation, be set the can switching member just enough of an active within the scope of the invention, make thus driven member reduce in the scope of this configuration of the present invention, this reliability, complexity and cost on device has produced positive impact.
Can set up through-flow connection by pipeline, for example conduit within the scope of the invention.
Accompanying drawing explanation
Below subtract by an embodiment and describe the present invention.Its accompanying drawing represents:
Fig. 1 a: a heat pump according to the present invention in heating work,
Fig. 1 b: a heat pump according to the present invention in refrigeration work, and
Fig. 2: the detail view of the possible configuration of a conversion equipment in the scope of the invention.
Embodiment
Fig. 1 a and 1b represent a heat pump 2 according to the present invention, and in heating work, (Fig. 1 is a) or in refrigeration work (Fig. 1 b).Shown in piping diagram medium or different phase or the pressure level of refrigerant by different connection types, represent.In heat pump according to the present invention, substantially there are three kinds of different conditions: first refrigerant or medium are partly carried with liquid state, and this represents by solid line.In addition medium is partly carried as cold air, and this connects to represent by a dotted line.Moreover medium also carries as hot gas, this connects to represent by dotted line.Flow direction represents by arrow.
Heat pump 2 according to the present invention has first heat exchanger 4, and this heat exchanger can be configured board-like hot conveyer.This first heat exchanger 4 is connected with object formation to be heated or to be cooled.It can be configured second heat exchanger 6 – stacked hot Chuan send Qi – and thermal source or radiator and form thermal coupling.
The medium of carrying in this closed circuit is by first compressor stage 8 precommpression and by second compressor stage 10 recompressions.Between the first compressor stage 8 and the second compressor stage 10, be provided with an intermediate pressure bottle 12 again, this intermediate pressure bottle carries out phase separation to the medium importing by input 12.1.In liquid medium, will derive by output 12.2, the medium in gaseous state rises in intermediate pressure bottle and the output 12.3 by intermediate pressure bottle 12 is siphoned away by the second compressor stage 10.
The liquid medium of being derived by intermediate pressure bottle 12 is derived by first-class 14.1 by a hot conveyer 14, and here it sends heat to medium in second 14.2, that aspirated by the first compressor stage 8.
In the downstream of the second compressor stage 10, be provided with a switching valve 16, here this switching valve is configured cross valve.Its first interface 16.1 of switching valve 16 use is connected through-flowly with the second compressor stage 10, with its second interface 16.2 through-flow with the first heat exchanger 4 be connected, with its 3rd interface 16.3 through-flow with hot conveyer 14 be connected and with its 4th interface 16.4 through-flow with the second heat exchanger 6 be connected.
The first heat exchanger 4 and the second heat exchanger 6 form indirectly through-flow connection at opposite side with a conversion equipment 18.Between the first heat exchanger 4 and conversion equipment 18, be provided with first expansion valve 20.Between the second heat exchanger 6 and conversion equipment 18, be provided with second expansion valve 22.With set up through-flow the connection by first interface 18.1 of the first expansion valve 20.In the second expansion valve 22 and through-flow the connection by the second interface 18.2 between conversion equipment 18, set up.The through-flow connection of first-class formation of the 3rd interface 18.3 and hot conveyer 14.An interface 24 of a coupling part 26 between the input 12.1 of the 4th interface 18.4 of conversion equipment 18 and the output 8.2 in the first compressor stage 8 and intermediate pressure bottle 12 is connected.
In the heating work shown in Fig. 1 a, switching valve 16 is changed in this wise, so that between the second compressor stage 10 and the first heat exchanger 4, sets up through-flow connection also side by side between the second heat exchanger 6 and the first compressor stage 8 and set up through-flow connection by hot conveyer 14.Thus heat exchanger 4 is carried by the warmed-up hot gas of the second compressor stage 10, hot gas is here exported its heat leave the first heat exchanger 4 with liquid state by condensation.Liquid medium is placed on middle pressure and evaporation by expansion valve 20.Conversion equipment 18 is changed in this wise in the case, so that it interconnects interface 18.1 and 18.4, makes thus decompression flow to the interface 24 between the first compressor stage 8 and intermediate pressure bottle 12 to the gas on middle pressure.
In heating work, in low-pressure side, the output of hot conveyer 14 and the second heat exchanger 6 form through-flow connections, and the latter is by switching valve 16 and interconnective interface 16.4 and 16.3 is with hot conveyer 14 and then and the first 8 through-flow connections of formation of compressor stage there.Hot conveyer 14 be connected to the interconnective interface 18.3 and 18.2 of the second heat exchanger 6 the second expansion valve 22 above by conversion equipment 18 and be reciprocally connected.
Therefore in heating work the interface 16.1 of high-pressure side switching valve 16 and 16.2 and the interface 18.1 and 18.4 of conversion equipment 18 interconnect.The interface 16.3 of low-pressure side switching valve 16 and 16.4 and the interface 18.2 and 18.3 of conversion equipment 18 interconnect.
In the refrigeration work shown in Fig. 1 b in the interface 16.1 of high-pressure side switching valve 16 and 16.4 mutual through-flow are connected and in low-pressure side interface 16.2 and 16.3 mutual through-flow connections.Therefore the second compressor stage 10 is by switching valve 16 and the second heat exchanger 6 couplings.
The first heat exchanger 4 forms through-flow connections by switching valve 16 and hot conveyer 14 and with the input 8.1 of the first compressor stage 8 subsequently.At high-pressure side conversion equipment 18, interface 18.2 is connected with 18.4 and makes thus the second heat exchanger 6 be connected with the interface 24 of coupling part 26 between the first compressor stage 8 and intermediate pressure bottle 12 by expansion valve 22 in the case.
A plurality of compressor stages of the intermediate pressure bottle 12 that therefore heat pump 2 according to the present invention connects in the middle of can using and having, because this intermediate pressure bottle 12 is always through-flow in the same direction in two transition statuses.In addition set up in this way and used a hot conveyer 14 to make the refrigerant gas that sucked by the first compressor stage overheated.Can additionally make in this way the refrigerant gas in compressor stage 8,10 overheated.
Fig. 2 represents according to conversion equipment 18 of the present invention possible configuration.
In conversion equipment 18, be provided with four one way stop peturn valves 18.5 to 18.8, each valve has a cut-off direction and a conducting direction.Interface 18.1 to 18.4 is connected on a conduit ring 18.9, wherein between every two interfaces in 18.1 to 18.4, be provided with an one way stop peturn valve 18.5 to 18.8, wherein each of these valves connected in this wise, thus from the fluid stream of each interface 18.1 to 18.4 only can carry out in the same direction as and towards the fluid stream of corresponding interface 18.1 to 18.4 also only can be by a direction, always the opposing party always carries out.Depending on every two interfaces of pressure condition, can interconnect in this way.
Reference numerals list
2 heat pumps
4 first heat exchangers
6 second heat exchangers
8 first compressor stages
The input of 8.1 first compressor stages
The output of 8.2 first compressor stages
10 second compressor stages
12 intermediate pressure bottles
The input of 12.1 intermediate pressure bottles
The liquid output of 12.2 intermediate pressure bottles
The gas output end of 12.3 intermediate pressure bottles
The hot conveyer of 14 inside
14.1 hot conveyers first-class
The second of 14.2 hot conveyers
16 switching valves
The interface of 16.1-16.4 switching valve
18 conversion equipments
The interface of 18.1-18.4 conversion equipment
18.5-18.8 one way stop peturn valve
18.9 conduit ring
20 first expansion valves
22 second expansion valves
24 tube connectors
26 interfaces
Claims (12)
1. the heat pump that can change between refrigeration work and heating work, has:
First heat exchanger (4), for absorbing energy and export energy in heating work in refrigeration work;
Second heat exchanger, for exporting energy and absorb energy in heating work in refrigeration work;
First compressor stage (8), for compressing a medium;
One is connected to the first compressor stage (8) the second compressor stage (10) below;
Wherein the pressure level in the first compressor stage (6) exit equals the pressure level of the second compressor stage (10) porch;
Wherein in the second compressor stage (8) downstream, connecting a switching valve (16), by this switching valve, in refrigeration work, can through-flowly be connected and can set up through-flow connection between the second compressor stage (8) and the first heat exchanger (4) in heating work setting up between the second compressor stage (8) and the second heat exchanger (6).
2. according to the heat pump of claim 1, it is characterized in that: between the first compressor stage (6) and the second compressor stage (10), be connected an intermediate pressure bottle (12) for the phase separation of liquid medium.
3. according to the heat pump of any one of the preceding claims, it is characterized in that: be provided with an inner hot conveyer (14), its first-class (14.1) be connected to the first compressor stage (8) above and its second (14.2) be connected to intermediate pressure bottle (12) a liquid output (12.2) after so that liquid medium separated and that export by liquid output (12.2) sends energy to the gaseous medium that flows to the first compressor stage (8) in intermediate pressure bottle (12).
4. according to the heat pump of any one of the preceding claims, it is characterized in that: be provided with one and there are four interfaces (16.1,16.2,16.3,16.4) switching valve (16), wherein first interface (16.1) is connected through-flowly with the second compressor stage (10), the second interface (16.2) is connected through-flowly with the first heat exchanger (4), the 3rd interface (16.3) and the first compressor stage (8) or through-flow with hot conveyer (14) be connected and the 4th interface (16.4) is connected through-flowly with the second heat exchanger (6), wherein
In refrigeration work, the second compressor stage (10) is connected and the first heat exchanger (4) and the first compressor stage (8) or through-flow with internal heat conveyer (14) connection through-flowly with the second heat exchanger (6), and
In heating work, the second compressor stage (10) is connected and the second heat exchanger (6) and the first compressor stage (8) or through-flow with internal heat conveyer (14) connection through-flowly with the first heat exchanger (4).
5. according to the heat pump of any one of the preceding claims, it is characterized in that: be provided with a conversion equipment (18), this conversion equipment makes the first heat exchanger (4) or each coupling part (24) of leading between the first compressor stage (8) and intermediate pressure bottle (12) by a middle expansion valve (20,22) connecting of the second heat exchanger (6).
6. according to the heat pump of any one of the preceding claims, it is characterized in that: conversion equipment has four interfaces (18.1,18.2,18.3,18.4), wherein first interface (18.1) by the first expansion valve (20) through-flow with the first heat exchanger (4) be connected, the second interface (18.2) by the second expansion valve (22) through-flow with the second heat exchanger (6) be connected, the 3rd interface (18.3) be connected through-flowly with internal heat conveyer (14) and the 4th interface (18.4) with the first compressor stage (8) through-flow with coupling part (24) between intermediate pressure bottle (12) be connected, wherein
In refrigeration work the second heat exchanger (6) by the second expansion valve (22) with the first compressor stage (8) through-flow with coupling part (24) between intermediate pressure bottle (12) be connected and hot conveyer (12) by the first expansion valve (20) through-flow with the first heat exchanger (4) be connected, and
In heating work the first heat exchanger (4) by the first expansion valve (20) with the first compressor stage (8) through-flow with coupling part (24) between intermediate pressure bottle (12) be connected and internal heat conveyer (14) by the second expansion valve (22) through-flow with the second heat exchanger (6) be connected.
7. according to the heat pump of any one of the preceding claims, it is characterized in that: the first compressor stage (8) and the second compressor stage (10) are disposed in a common compressor.
8. according to the heat pump of any one in claim 1 to 6, it is characterized in that: the first compressor stage (8) and the second compressor stage (10) realize by a single-stage compressor with intermediate injection device.
9. according to the heat pump of any one of the preceding claims, it is characterized in that: the first heat exchanger (4) is that a board-like hot conveyer and/or the second heat exchanger (6) are a stacked hot conveyer.
10. according to the heat pump of any one of the preceding claims, it is characterized in that: conversion equipment (18) and/or switching valve (16) are configured cross valve, every two interfaces (16.1 in corresponding dislocation wherein, 16.2,16.3,16.4,18.1,18.2,18.3,18.4) mutually form in couples through-flow connection.
11. according to the heat pump of any one of the preceding claims, it is characterized in that: conversion equipment (18) is configured four one way stop peturn valves (18.5, 18.6, 18.7, 18.8) structure, each interface (18.1 wherein, 18.2, 18.3, 18.4) by each the middle one way stop peturn valve (18.5 connecting, 18.6, 18.7, 18.8) in this wise with every two interfaces (18.1, 18.2, 18.3, 18.4) connect, so that according to interface (18.1, 18.2, 18.3, 18.4) every next one way stop peturn valve (18.5 of pressure condition on, 18.6, 18.7, 18.8) be cut off and another is opened, every two interfaces (18.1 thus, 18.2, 18.3, 18.4) mutually connect through-flowly.
12. according to the heat pump of any one of the preceding claims, it is characterized in that: the gas vent of intermediate pressure bottle (12), the outlet (8.2) of the first compressor stage (8) and the entrance of the second compressor stage (10) are connected to a star convergence point.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011121859.2 | 2011-12-21 | ||
| DE102011121859A DE102011121859B4 (en) | 2011-12-21 | 2011-12-21 | Heat pump with two-stage compressor and device for switching between heating and cooling operation |
| PCT/EP2012/076365 WO2013092849A1 (en) | 2011-12-21 | 2012-12-20 | Heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104114962A true CN104114962A (en) | 2014-10-22 |
| CN104114962B CN104114962B (en) | 2016-11-30 |
Family
ID=
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02225953A (en) * | 1988-12-23 | 1990-09-07 | General Electric Co <Ge> | Freezing system with double vaporizer for domestic refrigerator |
| JP2003074999A (en) * | 2001-08-31 | 2003-03-12 | Daikin Ind Ltd | Refrigerating machine |
| JP2005214444A (en) * | 2004-01-27 | 2005-08-11 | Sanyo Electric Co Ltd | Refrigerator |
| CN1793755A (en) * | 2004-12-22 | 2006-06-28 | 日立家用电器公司 | Refrigeration device and air conditioner using it |
| CN101410677A (en) * | 2006-03-27 | 2009-04-15 | 大金工业株式会社 | Refrigeration system |
| CN101473173A (en) * | 2006-06-21 | 2009-07-01 | 大金工业株式会社 | Refrigeration device |
| CN102016449A (en) * | 2008-05-02 | 2011-04-13 | 大金工业株式会社 | Refrigeration unit |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02225953A (en) * | 1988-12-23 | 1990-09-07 | General Electric Co <Ge> | Freezing system with double vaporizer for domestic refrigerator |
| JP2003074999A (en) * | 2001-08-31 | 2003-03-12 | Daikin Ind Ltd | Refrigerating machine |
| JP2005214444A (en) * | 2004-01-27 | 2005-08-11 | Sanyo Electric Co Ltd | Refrigerator |
| CN1793755A (en) * | 2004-12-22 | 2006-06-28 | 日立家用电器公司 | Refrigeration device and air conditioner using it |
| CN101410677A (en) * | 2006-03-27 | 2009-04-15 | 大金工业株式会社 | Refrigeration system |
| CN101473173A (en) * | 2006-06-21 | 2009-07-01 | 大金工业株式会社 | Refrigeration device |
| CN102016449A (en) * | 2008-05-02 | 2011-04-13 | 大金工业株式会社 | Refrigeration unit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2795209B1 (en) | 2018-05-02 |
| DE102011121859A1 (en) | 2013-06-27 |
| DE102011121859B4 (en) | 2013-07-18 |
| WO2013092849A1 (en) | 2013-06-27 |
| EP2795209A1 (en) | 2014-10-29 |
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