CN100400982C - Steam compression type refrigerating economizer system - Google Patents
Steam compression type refrigerating economizer system Download PDFInfo
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- CN100400982C CN100400982C CNB2005100214961A CN200510021496A CN100400982C CN 100400982 C CN100400982 C CN 100400982C CN B2005100214961 A CNB2005100214961 A CN B2005100214961A CN 200510021496 A CN200510021496 A CN 200510021496A CN 100400982 C CN100400982 C CN 100400982C
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Abstract
The invention discloses a vapor compression type economic refrigeration system, which is mainly composed of a compressor, a condenser, a flow regulating valve and an evaporator, wherein all the components are in welding connection by red copper pipes to form a completely closed refrigerantion circulation system. The utility model is characterized in that a film evaporation separation device is in series connection with pipelines which are arranged between a high-pressure refrigerant liquid discharge opening of the condenser and a high-pressure refrigerant liquid inlet of the flow regulating valve; both ends of a porous medium separation film arranged at the center of the film evaporation separation device are respectively connected with the high-pressure refrigerant liquid outlet of the condenser and the high-pressure refrigerant liquid inlet of the flow regulating valve; the refrigerant evaporation cavity of the porous medium separation film is connected with a steam suction opening of the compressor through pipelines; so the sealed refrigerantion circulation system is formed. The utility model has the advantages that the film evaporation separation device in the system makes the refrigerant passing through the flow regulating valve become into low-pressure single-phase liquid, so the heat exchange efficiency of the evaporator is greatly improved and the evaporator can realize miniaturization; the reduction of the flow regulating valve simplifies the system structure and the control difficulty is reduced.
Description
Technical field
The present invention relates to a kind of vapor compression type refrigerating system, particularly relate to a kind of vapor compression type refrigerating system that in air-conditioner, uses.
Background technology
In vapor compression type refrigerating system, adopt economizer can improve system's refrigerating capacity and Energy Efficiency Ratio significantly, thereby be the energy-conservation parts that often adopt.The economizer of Cai Yonging had two kinds of flash drum and heat exchangers in the past.The cold-producing medium circulation process of vapor compression type refrigerating system with flash drum economizer is as follows: the high pressure refrigerant liquid of coming out from condenser, enter flash drum after the throttling of the first order of flowing through choke valve, the shwoot steam that produces passes through screen separator, after separating the drop of sneaking into, enter the middle air entry of compressor; And the refrigerating fluid that flows out from flash drum is again through entering evaporimeter after the choke valve throttling of the second level, and to absorb heat of vaporization therein be low-pressure steam, enter compressor low-pressure steam air entry then, become high pressure high temperature vapor after compression, enter condenser again, emit condensation heat when condensing into the high pressure refrigerant liquid, and continue above-mentioned circulation.Cold-producing medium with vapor compression type refrigerating system of heat exchanger, by the circulation of following flow process: the high pressure refrigerant liquid of coming out from condenser, flow to heat exchanger (also claiming economizer) porch and be divided into two-way, one road refrigerant liquid directly enters heat exchanger, another road refrigerant liquid choke valve of flowing through enters heat exchanger after by step-down again, and in heat exchanger, absorb the heat of bypass refrigerant liquid, get back to the middle air entry of compressor after being evaporated to gas, and directly enter one road refrigerant liquid of heat exchanger, produced cold because of siphoned away heat by bypass refrigerant, again through entering evaporimeter after the choke valve step-down, enter compressor low pressure air suction mouth after being evaporated to steam, enter condenser through after the compressor compresses, emit condensation heat when being condensed into highly pressurised liquid, and continue above-mentioned circulation.
These two kinds of refrigerating economizer systems, all can not eliminate refrigerant liquid when being transported to choke valve, the shwoot steam that produces owing to flow pressure drop in pipeline, these refrigerant vapours enter evaporimeter in company with refrigerant liquid, reduced refrigerated medium evaporation of liquid area in the evaporimeter, not only reduce the efficient of evaporimeter, and increased the restriction loss of choke valve; Simultaneously,, make control system become complicated, not only increased the difficulty of control, and reduced the reliability of system owing in refrigerating circuit, used two control choke valves.
Summary of the invention
The objective of the invention is to: the evaporimeter heat exchange efficiency that solves present vapor compression type refrigerating system existence is low, choke valve single-phase liquid conduction property is poor, the system architecture complexity is not easy to control and the technical barrier that can not realize system's miniaturization; For providing in a kind of system evaporimeter heat exchange efficiency height, choke valve, the user can realize that single-phase liquid conducting, system architecture simply be convenient to control and the steam compression type refrigerating economizer system that can realize system's miniaturization.
The objective of the invention is to realize by the enforcement following technical proposals:
A kind of steam compression type refrigerating economizer system, include compressor, the condenser that is connected by pipeline with compressor high temperature and high pressure gas exhaust outlet, the evaporimeter that is connected by pipeline with compressor low-temp low-pressure refrigeration steam air entry, the choke valve that is connected by pipeline with evaporimeter low pressure refrigerant liquid inlet, it is characterized in that: in the pipeline that between the high pressure refrigerant liquid inlet port of the high pressure refrigerant liquid outlet of condenser and choke valve, connects, also be serially connected with film evaporation separator, the two ends of the hollow pipe porous media diffusion barrier in this device centre, connect high condenser pressure refrigerant liquid outlet and choke valve high pressure refrigerant liquid inlet port respectively, and the cold-producing medium evaporation cavity of this device, then connect compressor steam air entry, thereby form the refrigerant-cycle systems of complete closed by pipeline.
Additional technical feature of the present invention is:
1. in the pipeline that between the high pressure refrigerant liquid inlet port of the high pressure refrigerant liquid outlet of condenser and choke valve, connects, be serially connected with single stage membrane evaporation separator, the two ends of the hollow pipe porous media diffusion barrier in this device centre, connect high condenser pressure refrigerant liquid outlet and choke valve high pressure refrigerant liquid inlet port respectively, and the cold-producing medium evaporation cavity of this device, then connect the low-temp low-pressure refrigeration steam air entry of compressor, thereby form the refrigerant-cycle systems of complete closed by pipeline.
2. in the pipeline that between the high pressure refrigerant liquid inlet port of the high pressure refrigerant liquid outlet of condenser and choke valve, connects, be serially connected with single stage membrane evaporation separator, the two ends of the hollow pipe porous media diffusion barrier in this device centre, connect high condenser pressure refrigerant liquid outlet and choke valve high pressure refrigerant liquid inlet port respectively, and the cold-producing medium evaporation cavity of this device, then connect the cold steam air entry of middle compacting of compressor, thereby form the refrigerant-cycle systems of complete closed by pipeline.
3. in the pipeline that between the high pressure refrigerant liquid inlet port of the high pressure refrigerant liquid outlet of condenser and choke valve, connects, be serially connected with two-stage film evaporation separator, wherein first order film evaporates the cold-producing medium evaporation cavity of separator, the cold steam air entry of middle compacting that connects compressor by pipeline, and the cold-producing medium evaporation cavity of second level film evaporation separator, connect the low-temp low-pressure refrigeration steam air entry of compressor by pipeline, thereby form the refrigerant-cycle systems of complete closed.
4. the film in the pipeline that connects between high pressure refrigerant liquid outlet and choke valve high pressure refrigerant liquid inlet port evaporation separator is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa hollow tubulose porous media diffusion barrier, the shell that encapsulates this hollow pipe porous media diffusion barrier constitutes, cavity between shell and this hollow pipe porous media diffusion barrier, cold-producing medium evaporation cavity for film evaporation separator, at the two ends of this hollow pipe porous media diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
5. install hollow pipe porous media diffusion barrier, be the sintered metal tube diffusion barrier in film evaporation separator centre.
6. install hollow pipe porous media diffusion barrier, be the earthenware diffusion barrier in film evaporation separator centre.
7. install hollow pipe porous media diffusion barrier, be polypropylene fibre pipe diffusion barrier in film evaporation separator centre.
8. installing the hollow pipe porous media diffusion barrier in film evaporation separator centre, is that internal layer is the tubular separation membrane that sintering metal, skin are composited for polypropylene fibre.
9. installing the hollow pipe porous media diffusion barrier in film evaporation separator centre, is that internal layer is the tubular separation membrane that pottery, skin are composited for polypropylene fibre.
The invention has the advantages that: owing to high pressure refrigerant liquid outlet at the system condensing device, in the pipeline that is connected between the high pressure refrigerant liquid inlet port of evaporimeter prime choke valve, be serially connected with film evaporation separator, the hollow pipe porous media diffusion barrier in this device centre, has good gas-premeable, enter the high pressure refrigerating fluid that is mixed with gas this pipeline from condensator outlet, cavity by this device hollow pipe porous media diffusion barrier, make the gas that is mixed with and part refrigerant liquid enter outer evaporation cavity by the micropore of this deielectric-coating, and pipeline by being connected with the compressor air suction mouth with this chamber wall, refrigerant gas is imported compressor, owing to taken away a part of heat by the steam that the porous media diffusion barrier removes by filter, make and filter the cooling of further lowering the temperature of remaining refrigerated medium liquid, include and have only minimum gas, thereby ensured the refrigerant liquid that filters out from film evaporation separator, enter choke valve and become low pressure single-phase liquid cold-producing medium substantially, if in this pipeline, adopt the two-stage film evaporation separator of serial connection, then can make cold-producing medium become low pressure single-phase liquid cold-producing medium by choke valve, compared with prior art, the present invention has increased the disengagement area of refrigerant liquid greatly in evaporimeter, improved the heat exchange efficiency of evaporimeter, therefore, can realize the miniaturization of evaporimeter volume, thereby make the refrigeration system miniaturization become possibility; Another advantage of the present invention is: reduced the quantity of choke valve in refrigeration system, thereby system architecture is simplified, the control difficulty also reduces greatly.
Description of drawings
Fig. 1 is the vapor compression type refrigerating system structural representation with flash distillation bucket;
Fig. 2 is the vapor compression type refrigerating system structural representation with heat exchanger;
The vapor compression type refrigerating system structural representation that Fig. 3 is connected with pressure air entry in the compressor for the cold-producing medium evaporation cavity of single stage membrane evaporation separator;
The vapor compression type refrigerating system structural representation that Fig. 4 is connected with compressor low pressure air suction mouth for the cold-producing medium evaporation cavity of single stage membrane evaporation separator;
Fig. 5 is the vapor compression type refrigerating system structural representation that two-stage serial connection film evaporation separator is arranged.
Mark among the figure: 1 is compressor, 2 is compressor high temperature and high pressure gas exhaust outlet, 3 is condenser high temperature and high pressure gas suction inlet, 4 is condenser, 5 is evaporimeter, 6 is evaporimeter low pressure refrigerant liquid inlet, 7 is evaporimeter prime choke valve, 8 is high condenser pressure refrigerant liquid outlet, 9 is choke valve high pressure refrigerant liquid inlet port, 10,15 evaporation cavities for two-stage film evaporation separator, 11 are second level film evaporation separator, 12 for connecting the refrigerant gas pipeline of compressor low pressure air suction mouth and second level film evaporation separator evaporation cavity, 13 is compressor low-pressure steam air entry, 14 are first order film evaporation separator, 16 for connecting the refrigerant gas pipeline of first order film evaporation separator evaporation cavity and compressor air suction mouth, 17 is to press the steam air entry in the compressor, 18 hollow pipe porous media diffusion barriers for film evaporation separator core, 19 are the flash distillation bucket, 20 be high condenser pressure cold-producing medium outlet with pipeline that the flash distillation bucket is connected in choke valve, 21 is heat exchanger, and 22 is the prime choke valve of heat exchanger.
The specific embodiment
A, has the vapor compression type refrigerating system of single stage membrane evaporation separator
Mainly form, connect by silver soldering with copper tube between the five big parts, form the refrigerant-cycle systems of a complete closed by compressor, condenser, choke valve, film evaporation separator and five critical pieces of evaporimeter.Wherein: the high temperature and high pressure gas exhaust outlet 2 of compressor 1, the high temperature and high pressure gas suction inlet 3 that connects condenser 4 by copper tube, the high pressure refrigerant liquid outlet 8 of condenser 4, evaporate the refrigerant liquid inlet port a of the hollow pipe porous media diffusion barrier in separator 14 centres by the copper tube junctional membrane, the evaporation cavity 15 of film evaporation separator 14, the low-temp low-pressure steam air entry 13 or the middle pressure steam air entry 17 that can connect compressor 1 by copper tube, the refrigerant liquid outlet b of the hollow pipe porous media diffusion barrier in film evaporation separator 14 centres, pass through copper tube, middle through choke valve 7, the low pressure refrigerant liquid inlet 6 that directly connects evaporimeter 5, and the low-temp low-pressure steam outlet of evaporimeter 5, connect the low-temp low-pressure steam air entry 13 of compressor 1 by copper tube, thereby form the refrigerant-cycle systems of complete closed.
Embodiment 1: in the refrigerant-cycle systems of above-mentioned A, film evaporation separator 14 is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa sintering metal hollow pipe diffusion barrier, the copper shell that encapsulates this metal hollow pipe diffusion barrier constitute, cavity between this shell and metal hollow pipe diffusion barrier is the cold-producing medium evaporation cavity, at the two ends of this diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 2: in the refrigerant-cycle systems of above-mentioned A, film evaporation separator 14 is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa earthenware diffusion barrier, the copper shell that encapsulates this earthenware diffusion barrier constitute, and the cavity between this shell and earthenware diffusion barrier is the cold-producing medium evaporation cavity, and at the two ends of this diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 3: in the refrigerant-cycle systems of above-mentioned A, film evaporation separator 14 is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa polypropylene fibre pipe diffusion barrier, the copper shell that encapsulates this fibre pipe diffusion barrier constitute, cavity between this shell and polypropylene fibre pipe diffusion barrier is the cold-producing medium evaporation cavity, at the two ends of this fibre pipe diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 4: in the refrigerant-cycle systems of above-mentioned A, film evaporation separator 14 is to be that sintering metal, skin are polypropylene fibre, permeability through being composited is 1*10 by internal layer
-2--5*10
-4L/min.cm
2.Pa tubular separation membrane, and the encapsulation this composite separating film the copper shell constitute, the cavity between this shell and composite separating film is the cold-producing medium evaporation cavity, at the two ends of this composite separating film, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 5: in the refrigerant-cycle systems of above-mentioned A, film evaporation separator 14 is to be that earthenware, skin are polypropylene fibre, permeability through being composited is 1*10 by internal layer
-2--5*10
-4L/min.cm
2.Pa tubulose composite separating film, and the encapsulation this composite separating film the copper shell constitute, the cavity between this shell and composite separating film is the cold-producing medium evaporation cavity, at the two ends of this composite separating film, the on-line equipment refrigerant liquid enters, outlet.
B, has the vapor compression type refrigerating system of series connection two-stage film evaporation separator
Mainly form, connect by silver soldering with copper tube between the six big parts, form the refrigerant-cycle systems of a complete closed by two-stage film evaporation separator and six critical pieces of evaporimeter of compressor, condenser, choke valve, series connection.Wherein: the high temperature and high pressure gas exhaust outlet 2 of compressor 1, the high temperature and high pressure gas suction inlet 3 that connects condenser 4 by copper tube, the high pressure refrigerant liquid outlet 8 of condenser 4, separating dress by the evaporation of copper tube serial connection two-stage film contracts and puts 14,11, the cold-producing medium evaporation cavity 15 of first order film evaporation separator 14, be connected with the middle pressure steam air entry 17 of compressor 1 by copper tube 16, the cold-producing medium evaporation cavity 10 of second level film evaporation separator 11, be connected with the low-temp low-pressure steam air entry 13 of compressor 1 by copper tube 12, the refrigerant liquid outlet of second level film evaporation separator 11, pass through copper tube, middle through choke valve 7, the low pressure refrigerant liquid inlet 6 that directly connects evaporimeter 5, and the low-temp low-pressure steam outlet of evaporimeter 5, connect the low-temp low-pressure steam air entry 13 of compressor 1 by copper tube, thereby form the refrigerant-cycle systems of complete closed.
Embodiment 6: in the refrigerant-cycle systems of above-mentioned B, film evaporation separator 14,11 all is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa sintering metal hollow pipe diffusion barrier, and the encapsulation this metal hollow pipe diffusion barrier the copper shell constitute, cavity between this shell and metal hollow pipe diffusion barrier is the cold-producing medium evaporation cavity, at the two ends of this diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 7: in the refrigerant-cycle systems of above-mentioned B, film evaporation separator 14,11 all is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa earthenware diffusion barrier, and the encapsulation this earthenware diffusion barrier the copper shell constitute, the cavity between this shell and earthenware diffusion barrier is the cold-producing medium evaporation cavity, at the two ends of this diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 8: in the refrigerant-cycle systems of above-mentioned B, film evaporation separator 14,11 all is to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa polypropylene fibre pipe diffusion barrier, and the encapsulation this fibre pipe diffusion barrier the copper shell constitute, cavity between this shell and polypropylene fibre pipe diffusion barrier is the cold-producing medium evaporation cavity, at the two ends of this fibre pipe diffusion barrier, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 9: in the refrigerant-cycle systems of above-mentioned B, film evaporation separator 14,11 is that sintered metal tube, skin are polypropylene fibre, are 1*10 by the compound permeability of forming by internal layer all
-2--5*10
-4L/min.cm
2.Pa tubulose composite separating film, and the encapsulation this composite separating film the copper shell constitute, the cavity between this shell and composite separating film is the cold-producing medium evaporation cavity, at the two ends of this composite separating film, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 10: in the refrigerant-cycle systems of above-mentioned B, film evaporation separator 14,11 is that earthenware, skin are polypropylene fibre, are 1*10 by the compound permeability of forming by internal layer all
-2--5*10
-4L/min.cm
2.Pa tubulose composite separating film, and the encapsulation this composite separating film the copper shell constitute, the cavity between this shell and composite separating film is the cold-producing medium evaporation cavity, at the two ends of this composite separating film, the on-line equipment refrigerant liquid enters, outlet.
Embodiment 11: in the refrigerant-cycle systems of above-mentioned B, the hollow pipe porous media diffusion barrier in film evaporation separator 14 centres, be sintering metal hollow pipe diffusion barrier, and the hollow pipe porous media diffusion barrier in film evaporation separator 11 centres is the earthenware diffusion barrier.
Embodiment 12: in the refrigerant-cycle systems of above-mentioned B, the hollow pipe porous media diffusion barrier in the centre of film evaporation separator 14, be sintering metal hollow pipe diffusion barrier, and the hollow pipe porous media diffusion barrier in film evaporation separator 11 centres, for internal layer is that sintered metal tube, skin pass through the compound tubulose composite separating film diffusion barrier of forming for polypropylene fibre.
Embodiment 13: in the refrigerant-cycle systems of above-mentioned B, the hollow pipe porous media diffusion barrier in film evaporation separator 14 centres, be the earthenware diffusion barrier, and the hollow pipe porous media diffusion barrier in film evaporation separator 11 centres, for internal layer is an earthenware, outer for polypropylene fibre, by the compound tubulose composite separating film of forming.
Embodiment 14: in the refrigerant-cycle systems of above-mentioned B, the hollow pipe porous media diffusion barrier 18 in film evaporation separator 14 centres, for internal layer is a sintered metal tube, outer for polypropylene fibre, by the compound tubulose composite separating film of forming, and the hollow pipe porous media diffusion barrier in film evaporation separator 11 centres, for internal layer is an earthenware, outer for polypropylene fibre, by the compound tubulose composite separating film of forming.
Claims (5)
1. steam compression type refrigerating economizer system, include compressor (1), the condenser (4) that is connected by pipeline with compressor high temperature and high pressure gas exhaust outlet (2), the evaporimeter (5) that is connected by pipeline with compressor low-temp low-pressure refrigeration steam air entry (13), the choke valve (7) that is connected by pipeline with evaporimeter low pressure refrigerant liquid inlet (6), it is characterized in that: at the high pressure refrigerant liquid outlet (8) of condenser (4), and in the pipeline that connects between the high pressure refrigerant liquid inlet port (9) of choke valve (7), also be serially connected with film evaporation separator, the two ends of the hollow pipe porous media diffusion barrier in this device centre, connect high condenser pressure refrigerant liquid outlet (8) and choke valve high pressure refrigerant liquid inlet port (9) respectively, and the cold-producing medium evaporation cavity of this device, then connect the steam air entry of compressor (1), thereby form the refrigerant-cycle systems of complete closed by pipeline.
2. steam compression type refrigerating economizer system according to claim 1, it is characterized in that: at the high pressure refrigerant liquid outlet (8) of condenser (4), and in the pipeline that connects between the high pressure refrigerant liquid inlet port (9) of choke valve (7), be serially connected with single stage membrane evaporation separator (14), two ends (a of the hollow pipe porous media diffusion barrier (18) in this device centre, b), connect high condenser pressure refrigerant liquid outlet (8) and choke valve high pressure refrigerant liquid inlet port (9) respectively, and the cold-producing medium evaporation cavity (15) of this device, then connect the low-temp low-pressure refrigeration steam air entry (13) of compressor (1), thereby form the refrigerant-cycle systems of complete closed by pipeline (16).
3. steam compression type refrigerating economizer system according to claim 1, it is characterized in that: at the high pressure refrigerant liquid outlet (8) of condenser (4), and in the pipeline that connects between the high pressure refrigerant liquid inlet port (9) of choke valve (7), be serially connected with single stage membrane evaporation separator (14), two ends (a of the hollow pipe porous media diffusion barrier (18) in this device centre, b), connect high condenser pressure refrigerant liquid outlet (8) and choke valve high pressure refrigerant liquid inlet port (9) respectively, and the cold-producing medium evaporation cavity (15) of this device, then connect the cold steam air entry of middle compacting (17) of compressor (1), thereby form the refrigerant-cycle systems of complete closed by pipeline (16).
4. steam compression type refrigerating economizer system according to claim 1, it is characterized in that: at the high pressure refrigerant liquid outlet (8) of condenser (4), and in the pipeline that connects between the high pressure refrigerant liquid inlet port (9) of choke valve (7), be serially connected with two-stage film evaporation separator (11,14), wherein first order film evaporates the cold-producing medium evaporation cavity (15) of separator (14), the cold steam air entry of middle compacting (17) that connects compressor (1) by pipeline (16), and the cold-producing medium evaporation cavity (10) of second level film evaporation separator (11), connect the low-temp low-pressure refrigeration steam air entry (13) of compressor by pipeline (12), thereby form the refrigerant-cycle systems of complete closed.
5. according to claim 1,2,3,4 arbitrary described steam compression type refrigerating economizer systems, it is characterized in that: in high pressure refrigerant liquid outlet (8), and the film in connecting line evaporation separator between the high pressure refrigerant liquid inlet port (9) of choke valve (7), be to be 1*10 by permeability
-2--5*10
-4L/min.cm
2.Pa hollow tubulose porous media diffusion barrier (18), and the shell of this hollow pipe porous media diffusion barrier (18) of encapsulation constitutes, cavity (10,15) between shell and this hollow pipe porous media diffusion barrier, cold-producing medium evaporation cavity for film evaporation separator, at the two ends of this hollow pipe porous media diffusion barrier (18), on-line equipment refrigerant liquid import and export.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100214961A CN100400982C (en) | 2005-08-19 | 2005-08-19 | Steam compression type refrigerating economizer system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100214961A CN100400982C (en) | 2005-08-19 | 2005-08-19 | Steam compression type refrigerating economizer system |
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| CN1743773A CN1743773A (en) | 2006-03-08 |
| CN100400982C true CN100400982C (en) | 2008-07-09 |
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| CNB2005100214961A Expired - Fee Related CN100400982C (en) | 2005-08-19 | 2005-08-19 | Steam compression type refrigerating economizer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2232164B1 (en) * | 2007-12-31 | 2020-03-25 | Johnson Controls Technology Company | System for rotor cooling |
| CN103673145B (en) * | 2012-09-05 | 2016-03-23 | 苏州必信空调有限公司 | The air-conditioning system of compact handpiece Water Chilling Units and skyscraper |
| CN102865651A (en) * | 2012-10-16 | 2013-01-09 | 四川依米康环境科技股份有限公司 | Energy-saving air conditioning unit having automatic heat recovery controlling function and control method thereof |
| CN110160183A (en) * | 2019-05-31 | 2019-08-23 | 天普新能源科技有限公司 | Gas-supplying enthalpy-increasing air source heat pump |
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| US5095712A (en) * | 1991-05-03 | 1992-03-17 | Carrier Corporation | Economizer control with variable capacity |
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