CN201561600U - Ultra low temperature overlapping unit - Google Patents
Ultra low temperature overlapping unit Download PDFInfo
- Publication number
- CN201561600U CN201561600U CN2009200897933U CN200920089793U CN201561600U CN 201561600 U CN201561600 U CN 201561600U CN 2009200897933 U CN2009200897933 U CN 2009200897933U CN 200920089793 U CN200920089793 U CN 200920089793U CN 201561600 U CN201561600 U CN 201561600U
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- low temperature
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- temperature
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Abstract
The utility model relates to an ultra low temperature overlapping unit for producing a cold source of minus 40-minus 75 DEG C by directly utilizing cooling water with the temperature of more than 30 DEG C. A single water cooling low temperature unit adopts two groups of independent steam compression refrigerating circulating systems, condensing heat of one of both groups is used for the evaporation and heat absorption used for the other group; and the heat transmission between both groups of steam compression refrigerating circulating systems adopts a high-efficiency composite type heat exchanger, thereby improving the heat exchange efficiency of the unit, reducing the heat transmission loss of intermediate links and realizing stable, high-efficiency working with long service life.
Description
Affiliated technical field
The utility model relates to a kind of water-cooled low temperature unit, especially can directly utilize the ultralow temperature unit of cooling water output-40 more than 30 ℃ ℃～-75 ℃ of low-temperature receivers.
Background technology
At present, the twin-stage water-cooled ultralow temperature unit of single-stage water-cooled low temperature unit more than-40 ℃ and-40 ℃～-75 ℃ can be provided according to its sink temperature that provides Chang Yong water-cooled low temperature unit.But twin-stage ultralow temperature unit adopts the two-stage refrigeration compressor mostly, and the high-pressure side of refrigeration system and low-pressure lateral pressure difference are bigger, causes big, the unit operating efficiency reduction fault rate rising of internal leakage in the cold-producing medium compression process.
Summary of the invention
In order to overcome the high deficiency of the existing big operating efficiency less trouble of twin-stage ultralow temperature unit internal leakage, the utility model provides a kind of ultralow temperature overlapping unit, not only can directly utilize more than 30 ℃ cooling water output-40 ℃～-75 ℃ of low-temperature receivers, and long-life work that can stability and high efficiency.
The technical scheme that its technical problem that solves the utility model adopts is: adopt two groups of independently Vapor Compression Refrigeration Cycle systems in separate unit water-cooled low temperature unit, wherein one group condenser heat is realized the transmission of two-stage temperature as the evaporation heat absorption usefulness of another group; And two groups independently the heat transmission between the Vapor Compression Refrigeration Cycle system adopt the efficient composite heat exchanger, improve set heat exchange efficient, the hot transmission loss of cutting down the number of intermediate links.As cooling source, its evaporating temperature is controlled at 0 ℃～-35 ℃ cooling sources as second level refrigeration system to first order refrigeration system, first order refrigeration system and the same stability and high efficiency of single-stage water-cooled low temperature unit about 30 ℃ cooling water.Second level refrigeration system by the efficient composite heat exchanger the evaporating temperature of 0 ℃～-35 ℃ of first order refrigeration systems as cooling source, its evaporating temperature is controlled at the low-temperature receiver of-45 ℃～-80 ℃ outputs-40 ℃～-75 ℃.The transmission of two-stage temperature has reduced the suction and discharge pressure differential of compressor, reduces fault rate and improves service life, and the internal leakage that reduces in the cold-producing medium compression process improves refrigerant compression efficient.
The beneficial effects of the utility model are: can directly utilize more than 30 ℃ cooling water output-40 ℃～-75 ℃ of low-temperature receivers, and long-life work that can stability and high efficiency.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is a structure principle chart of the present utility model
Among the figure 1, refrigeration compressor, 2, evaporimeter, 3, the low temperature cold source import, 4, the low temperature cold source outlet, 5, expansion valve, 6, the efficient composite heat exchanger, 7, device for drying and filtering, 8, condenser, 9, cooling water inlet, 10, coolant outlet.
The specific embodiment
In Fig. 1, the refrigeration compressor in left side (1), condenser (8), device for drying and filtering (7), expansion valve (5), efficient composite heat exchanger (6) connect into loop by refrigeration piping, constitute first group of Vapor Compression Refrigeration Cycle system.The refrigeration compressor on right side (1), efficient composite heat exchanger (6), device for drying and filtering (7), expansion valve (5), evaporimeter (2) connect into loop by refrigeration piping, constitute second group of Vapor Compression Refrigeration Cycle system.Second group condenser heat is as first group evaporation heat absorption usefulness, realizes directly utilizing more than 30 ℃ cooling water output-40 ℃～-75 ℃ of low-temperature receivers.
Claims (3)
1. a water-cooled low temperature unit adopts the Vapor Compression Refrigeration Cycle system, it is characterized in that: adopt two groups of independently Vapor Compression Refrigeration Cycle systems in separate unit water-cooled low temperature unit, wherein one group condenser heat is used as the evaporation heat absorption of another group.
2. water-cooled low temperature unit according to claim 1 is characterized in that: two groups independently the Vapor Compression Refrigeration Cycle system can adopt one or an above refrigeration compressor respectively.
3. water-cooled low temperature unit according to claim 1 is characterized in that: two groups independently the heat transmission between the Vapor Compression Refrigeration Cycle system can adopt one or an above heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200897933U CN201561600U (en) | 2009-04-24 | 2009-04-24 | Ultra low temperature overlapping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200897933U CN201561600U (en) | 2009-04-24 | 2009-04-24 | Ultra low temperature overlapping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561600U true CN201561600U (en) | 2010-08-25 |
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ID=42626746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200897933U Expired - Fee Related CN201561600U (en) | 2009-04-24 | 2009-04-24 | Ultra low temperature overlapping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561600U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754505A (en) * | 2022-04-28 | 2022-07-15 | 青岛海尔空调电子有限公司 | Cascade heat pump system and compressor control method thereof |
| CN114941913A (en) * | 2022-04-28 | 2022-08-26 | 青岛海尔空调电子有限公司 | Cascade heat pump system |
| CN114941914A (en) * | 2022-04-28 | 2022-08-26 | 青岛海尔空调电子有限公司 | Control method of cascade heat pump system |
| CN115164433A (en) * | 2022-06-30 | 2022-10-11 | 青岛海尔空调电子有限公司 | Cascade heat pump system and control method thereof |
| CN115164434A (en) * | 2022-06-30 | 2022-10-11 | 青岛海尔空调电子有限公司 | Cascade heat pump system and control method thereof |
-
2009
- 2009-04-24 CN CN2009200897933U patent/CN201561600U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754505A (en) * | 2022-04-28 | 2022-07-15 | 青岛海尔空调电子有限公司 | Cascade heat pump system and compressor control method thereof |
| CN114941913A (en) * | 2022-04-28 | 2022-08-26 | 青岛海尔空调电子有限公司 | Cascade heat pump system |
| CN114941914A (en) * | 2022-04-28 | 2022-08-26 | 青岛海尔空调电子有限公司 | Control method of cascade heat pump system |
| CN115164433A (en) * | 2022-06-30 | 2022-10-11 | 青岛海尔空调电子有限公司 | Cascade heat pump system and control method thereof |
| CN115164434A (en) * | 2022-06-30 | 2022-10-11 | 青岛海尔空调电子有限公司 | Cascade heat pump system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HE'NAN BEIDI NEW ENERGY REFRIGERATION INDUSTRY CO. Free format text: FORMER NAME: JIYUAN BEIDI UNDERGROUND ENERGY CENTRAL AIR CONDITIONING EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 454650 No. 6 high-tech industry agglomeration area, Henan, Jiyuan Patentee after: HENAN BEIDI NEW ENERGY REFRIGERATION INDUSTRY CO., LTD. Address before: 454652 Henan province Jiyuan Yuquan office gang head entrance to the village Patentee before: Jiyuan Beidi Underground Energy Central Air Conditioning Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20160424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |