CN109307376B - Compression condensing unit for cooling high-temperature space - Google Patents
Compression condensing unit for cooling high-temperature space Download PDFInfo
- Publication number
- CN109307376B CN109307376B CN201811174618.4A CN201811174618A CN109307376B CN 109307376 B CN109307376 B CN 109307376B CN 201811174618 A CN201811174618 A CN 201811174618A CN 109307376 B CN109307376 B CN 109307376B
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- liquid
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- temperature
- control water
- water valve
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- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 230000006835 compression Effects 0.000 title claims abstract description 16
- 238000007906 compression Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 36
- 239000003570 air Substances 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a compression condensing unit for cooling a high-temperature space, and relates to the technical field of special air conditioner refrigeration. The invention comprises a compressor, an oil separator, an oil cooler, a first temperature control water valve, an economizer, a gas-liquid separator, a second temperature control water valve and a condensation liquid storage component; the compressor, the oil separator, the condensed liquid storage component, the economizer, the gas-liquid separator and the compressor form a refrigeration cycle; the compressor, the oil separator, the oil cooler and the compressor sequentially form an oil cooling cycle; the condensation liquid storage component, the second temperature control water valve, the first temperature control water valve, the oil cooler and the condensation liquid storage component form a cold-carrying circulation. By reasonably arranging the liquid storage, the gas-liquid separator, the related valve and the refrigeration pipeline, the invention can control the suction temperature and the pressure of the compressor within a reasonable range, ensure the safe and reliable operation of the refrigeration system at high evaporation temperature and realize the large-span cooling of the cooling space.
Description
Technical Field
The invention belongs to the technical field of special air conditioner refrigeration, and particularly relates to a compression condensing unit for cooling a high-temperature space.
Background
The special air conditioner field can always need to cool and dehumidify high-temperature and high-humidity space (such as an environmental laboratory, a smelting factory building and the like), and at present, a direct air exchanging mode and a refrigerating unit cooling mode are mainly adopted, wherein the relatively low-temperature and low-humidity air of the ambient air is fully utilized to replace the high-temperature and high-humidity air of the space to be treated, so that the energy is saved most, but the direct replacement of the internal air and the external air is not allowed in some cases, so that the refrigerating unit cooling mode has to be generally adopted. When the cooling mode of the refrigerating unit is used, the efficiency of the refrigerating unit can be reduced due to the secondary heat exchange mode of the refrigerating medium, and the freezing problem can be caused by the use of the refrigerating medium in consideration of the fact that a certain high-temperature and high-humidity space is often converted into a low-temperature space, so that the direct heat exchange cooling mode of the refrigerating medium is most commonly used, namely, the compression condensing unit is adopted to directly provide the refrigerating medium to the tail end of the indoor for refrigerating. When the conventional compression condensing unit is used for cooling a high-temperature and high-humidity space, although measures such as R134a are taken by using a high-temperature refrigerant, if the indoor temperature and humidity are too high, such as above 30 ℃/95% (which often occurs in some national standard experiments), the compression condensing unit cannot be started up normally due to the problem of too high evaporation temperature and the like.
Disclosure of Invention
The invention aims to provide a compression condensing unit for cooling a high-temperature space, which can control the suction temperature and pressure of a compressor within a reasonable range by reasonably arranging a liquid storage device, a gas-liquid separator, related valve members and a refrigerating pipeline, ensure the safe and reliable operation of a refrigerating system at a high evaporation temperature, realize the large-span cooling of the cooling space and solve the problem of poor refrigerating effect of the conventional special air conditioner.
In order to solve the technical problems, the invention is realized by the following technical scheme:
The invention relates to a compression condensing unit for cooling a high-temperature space, which comprises a compressor, an oil separator, an oil cooler, a first temperature control water valve, an economizer, a gas-liquid separator, a second temperature control water valve and a condensation liquid storage component, wherein the oil cooler is arranged on the compressor; the compressor, the oil separator, the condensed liquid storage component, the economizer, the gas-liquid separator and the compressor form a refrigeration cycle; the compressor, the oil separator, the oil cooler and the compressor sequentially form an oil cooling cycle; the condensation liquid storage component, the second temperature control water valve, the first temperature control water valve, the oil cooler and the condensation liquid storage component form a cold-carrying circulation; the condensation liquid storage component is connected with a pipeline a flowing to the gas-liquid separator; the pipeline a is provided with a first electromagnetic valve and a first temperature-control electronic expansion valve; the gas-liquid separator is connected with a pipeline b flowing to the condensation liquid storage component; the pipeline b is provided with a pressure relief valve and a check valve; the condensed liquid storage component is connected with a pipeline c flowing to an economizer; and a second electromagnetic valve and a second temperature-control electronic expansion valve are arranged on the pipeline c.
Further, the condensate reservoir assembly includes a first condenser and a reservoir; the first condenser, the second temperature control water valve, the first temperature control water valve, the oil cooler and the first condenser form a cold-carrying circulation; the liquid outlet end of the liquid reservoir is connected with the liquid inlet end of the gas-liquid separator through a pipeline a; the liquid inlet end of the liquid reservoir is connected with the liquid outlet end of the gas-liquid separator through a pipeline b; the liquid outlet end of the liquid storage device is connected with the liquid inlet end of the economizer through a pipeline c.
Further, the condensing liquid storage component is a second condenser with liquid storage function; the second condenser can have the functions of both a condenser and a liquid receiver.
Further, the first temperature control water valve and the second temperature control water valve are both through type regulating valves or three-way type mixing regulating valves.
Further, the critical temperature of the refrigerant and the lubricating oil of the compression condensing unit is obviously higher than the highest setting temperature of the cooling space except the general characteristics of the refrigerant, for example, the highest 80 ℃ storage temperature is adopted, R134a is more proper, and the critical temperature is about 101 ℃; the flash point of the lubricating oil should be significantly higher than the maximum set temperature of the cooling space to ensure lubrication safety.
The invention has the following beneficial effects:
by reasonably arranging the liquid storage, the gas-liquid separator, the related valve and the refrigeration pipeline, the invention can control the suction temperature and the pressure of the compressor within a reasonable range, ensure the safe and reliable operation of the refrigeration system at high evaporation temperature and realize the large-span cooling of the cooling space.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system diagram of a first embodiment of the present invention;
fig. 2 is a system schematic diagram of a second embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1-compressor, 2-oil separator, 3-oil cooler, 4-economizer, 5-gas-liquid separator, 6-first condenser, 7-reservoir, 8-second condenser, 9-second temperature control water valve, 301-first temperature control water valve, 401-second solenoid valve, 402-second temperature control electronic expansion valve, 501-first solenoid valve, 502-first temperature control electronic expansion valve, 503-relief valve, 504-check valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
First embodiment:
Referring to fig. 1, the present invention is a compression condensing unit for cooling a high-temperature space, comprising a compressor 1, an oil separator 2, an oil cooler 3, a first temperature-controlled water valve 301, an economizer 4, a gas-liquid separator 5, a first condenser 6, a liquid reservoir 7 and a second temperature-controlled water valve 9;
The compressor 1, the oil separator 2, the first condenser 6, the liquid reservoir 7, the economizer 4, the gas-liquid separator 5 and the compressor 1 form a refrigeration cycle; the refrigeration cycle loop also comprises all pipelines which are respectively and correspondingly connected with the compressor 1, the oil separator 2, the first condenser 6, the liquid storage 7, the economizer 4 and the gas-liquid separator 5, and a refrigeration pipeline which supplies cold to all the tail ends of the high-temperature space, and all the components and the refrigeration pipeline which flow back to the unit after being released from all the tail ends of the high-temperature space and flow back to the suction port of the compressor through the gas-liquid separator 5;
the compressor 1, the oil separator 2, the oil cooler 3 and the compressor 1 sequentially form an oil cooling circulation loop; the oil cooling circulation loop also comprises various pipelines which are respectively and correspondingly connected with the compressor 1, the oil separator 2 and the oil cooler 3;
The first condenser 6, the second temperature control water valve 9, the first temperature control water valve 301, the oil cooler 3 and the first condenser 6 form a cold-carrying circulation loop; the cold-carrying circulation loop further comprises various pipelines respectively and correspondingly connected with the first condenser 6, the second temperature control water valve 9, the first temperature control water valve 301 and the oil cooler 3;
The outlet refrigeration pipeline of the liquid receiver 7 is connected with a pipeline a which flows to the gas-liquid separator 5 besides flowing to the economizer 4 and the tail end of the high-temperature space; the pipeline a is provided with a first electromagnetic valve 501 and a first temperature-control electronic expansion valve 502; the gas-liquid separator 5 is connected with a pipeline b flowing to the liquid reservoir 7; the pipeline b is provided with a pressure relief valve 503 and a check valve 504; the reservoir 7 is connected to a conduit c leading to the economizer 4; the pipeline c is provided with a second electromagnetic valve 401 and a second temperature-control electronic expansion valve 402.
Wherein, the first temperature control water valve 301 and the second temperature control water valve 9 are both through type regulating valves or three-way type mixing regulating valves.
Specific embodiment II:
Referring to fig. 2, the present invention is a compression condensing unit for cooling a high-temperature space, comprising a compressor 1, an oil separator 2, an oil cooler 3, a first temperature-control water valve 301, an economizer 4, a gas-liquid separator 5, a second temperature-control water valve 9, and a second condenser 8 with a liquid storage function; the second condenser 8 can have the functions of both a condenser and a liquid receiver;
The compressor 1, the oil separator 2, the second condenser 8, the economizer 4, the gas-liquid separator 5 and the compressor 1 form a refrigeration cycle; the refrigeration cycle loop also comprises all pipelines which are respectively and correspondingly connected with the compressor 1, the oil separator 2, the second condenser 8, the liquid storage 7, the economizer 4 and the gas-liquid separator 5, and a refrigeration pipeline which supplies cold to all the tail ends of the high-temperature space, and all the components and the refrigeration pipeline which flow back to the unit after being released from all the tail ends of the high-temperature space and flow back to the suction port of the compressor through the gas-liquid separator 5;
the compressor 1, the oil separator 2, the oil cooler 3 and the compressor 1 sequentially form an oil cooling circulation loop; the oil cooling circulation loop also comprises various pipelines which are respectively and correspondingly connected with the compressor 1, the oil separator 2 and the oil cooler 3;
The second condenser 8, the second temperature control water valve 9, the first temperature control water valve 301, the oil cooler 3 and the second condenser 8 form a cold-carrying circulation loop; the cold-carrying circulation loop further comprises various pipelines respectively and correspondingly connected with the first condenser 6, the second temperature control water valve 9, the first temperature control water valve 301 and the oil cooler 3;
The second condenser 8 is connected with a pipeline a flowing to the gas-liquid separator 5; the pipeline a is provided with a first electromagnetic valve 501 and a first temperature-control electronic expansion valve 502; the gas-liquid separator 5 is connected with a pipeline b flowing to the second condenser 8; the pipeline b is provided with a pressure relief valve 503 and a check valve 504; the second condenser 8 is connected to a conduit c which flows to the economizer 4; the pipeline c is provided with a second electromagnetic valve 401 and a second temperature-control electronic expansion valve 402.
Wherein, the first temperature control water valve 301 and the second temperature control water valve 9 are both through type regulating valves or three-way type mixing regulating valves.
The condenser and the oil cooler of the invention do not exclude the adoption of an air cooling mode respectively, but the temperature control water valve is correspondingly changed into an air adjusting type self-control valve, such as a condensing pressure regulator and the like, and the invention is more adopted because the cooling water mode has better cooling effect.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. The compression condensing unit for cooling the high-temperature space is characterized by comprising a compressor (1), an oil separator (2), an oil cooler (3), a first temperature control water valve (301), an economizer (4), a gas-liquid separator (5), a second temperature control water valve (9) and a condensation liquid storage component;
The compressor (1), the oil separator (2), the condensation liquid storage component, the economizer (4), the gas-liquid separator (5) and the compressor (1) form a refrigeration cycle;
the compressor (1), the oil separator (2), the oil cooler (3) and the compressor (1) sequentially form an oil cooling cycle;
The condensation liquid storage component, the second temperature control water valve (9), the first temperature control water valve (301), the oil cooler (3) and the condensation liquid storage component form a cold-carrying circulation;
Wherein the condensed liquid storage component is connected with a pipeline a flowing to a gas-liquid separator (5); the pipeline a is provided with a first electromagnetic valve (501) and a first temperature-control electronic expansion valve (502);
Wherein the gas-liquid separator (5) is connected with a pipeline b flowing to the condensation liquid storage component; the pipeline b is provided with a pressure relief valve (503) and a check valve (504);
Wherein the condensate storage assembly is connected to a conduit c to an economizer (4); the pipeline c is provided with a second electromagnetic valve (401) and a second temperature-control electronic expansion valve (402).
2. Compression condensing unit for cold supply in hot space according to claim 1 characterized by the fact that the condensation reservoir assembly comprises a first condenser (6) and a reservoir (7); the first condenser (6), the second temperature control water valve (9), the first temperature control water valve (301), the oil cooler (3) and the first condenser (6) form a cold-carrying circulation; the liquid outlet end of the liquid reservoir (7) is connected with the liquid inlet end of the gas-liquid separator (5) through a pipeline a; the liquid inlet end of the liquid reservoir (7) is connected with the liquid outlet end of the gas-liquid separator (5) through a pipeline b; the liquid outlet end of the liquid reservoir (7) is connected with the liquid inlet end of the economizer (4) through a pipeline c.
3. Compression condensing unit for cooling hot space according to claim 1 characterized by the fact that the condensation reservoir assembly is a second condenser (8) with reservoir function.
4. The compression condensing unit for cooling a high-temperature space according to claim 1, wherein the first temperature control water valve (301) and the second temperature control water valve (9) are through type regulating valves or three-way type mixing regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174618.4A CN109307376B (en) | 2018-10-09 | 2018-10-09 | Compression condensing unit for cooling high-temperature space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174618.4A CN109307376B (en) | 2018-10-09 | 2018-10-09 | Compression condensing unit for cooling high-temperature space |
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| Publication Number | Publication Date |
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| CN109307376A CN109307376A (en) | 2019-02-05 |
| CN109307376B true CN109307376B (en) | 2024-06-14 |
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| CN201811174618.4A Active CN109307376B (en) | 2018-10-09 | 2018-10-09 | Compression condensing unit for cooling high-temperature space |
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| CN111520927A (en) * | 2020-06-08 | 2020-08-11 | 青岛科润工业设备有限公司 | Overlapping refrigerating system and overlapping refrigerating system |
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| CN209042801U (en) * | 2018-10-09 | 2019-06-28 | 合肥丰蓝电器有限公司 | A kind of high-temperature space supplies colod-application Condensing units |
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| JP3252529B2 (en) * | 1993-05-17 | 2002-02-04 | 松下電器産業株式会社 | Heat transfer device |
| JPH09145167A (en) * | 1995-11-24 | 1997-06-06 | Mitsubishi Electric Corp | Air conditioner |
| JP4465860B2 (en) * | 2000-11-20 | 2010-05-26 | 株式会社富士通ゼネラル | Air conditioner refrigeration equipment |
| KR200336482Y1 (en) * | 2003-09-29 | 2003-12-18 | 김봉석 | Heat exchanging device |
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