CN201885474U - Cooling system for metro vehicle air-conditioning units - Google Patents
Cooling system for metro vehicle air-conditioning units Download PDFInfo
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- CN201885474U CN201885474U CN2010205872808U CN201020587280U CN201885474U CN 201885474 U CN201885474 U CN 201885474U CN 2010205872808 U CN2010205872808 U CN 2010205872808U CN 201020587280 U CN201020587280 U CN 201020587280U CN 201885474 U CN201885474 U CN 201885474U
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- evaporimeter
- condenser
- compressor
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- compressor bank
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Abstract
The utility model relates to a cooling system for metro vehicle air-conditioning units. The cooling system comprises a first cooling subsystem and a second cooling subsystem, the first cooling subsystem comprises a first condenser, a first compressor set and a first evaporator which are connected end to end, the first compressor set comprises two first compressors which are connected in parallel, the second cooling subsystem comprises a second condenser, a second compressor set and a second evaporator which are connected end to end, and the second compressor set comprises two second compressors which are connected in parallel. The cooling system can ensure that the change of the temperature gradient of passenger rooms is smaller, thus satisfying the requirement of passengers on comfort, and the cooling system can be adapted to the harsh environmental conditions of metro vehicles, and can achieve the effects of effectively saving energy and reducing the maintenance cost.
Description
Technical field
The utility model relates to the air conditioner of subway vehicle unit, relates in particular to a kind of refrigeration system that is used for the air conditioner of subway vehicle unit.
Background technology
Subway ' s air-conditioning system is the important device of air themperature, humidity and air quality in the control subway guest room.Along with the continuous rising of atmosphere outside temperature and the continuous increase of taking the subway number, more and more higher with the Capability Requirement that bears high capacity to the refrigeration of subway air conditioner group; Energy-conservation requirement also improves constantly while subway user to subway air conditioner group.
At present, the two cover refrigeration subsystem that subway is made up of two compressors with the air-conditioning Crew Cooling System, refrigerating capacity (standard condition) is 42kw, the high ambient temperature of air-conditioning unit operation is 45 ℃ (32 ℃ of return air temperatures).Be that 1 cover refrigeration subsystem starts at least during the work of air-conditioning Crew Cooling System, minimum refrigerating capacity (standard condition) is 21kw, is taking under the subway situation fewer in number, and the passenger can feel that the guest room is terribly cold, causes environmental degree of comfort to descend and energy waste.Higher in the summer environment temperature; take under the more situation of subway passenger; subway enters the high capacity operating mode; local iron hoop border temperature is during near 45 ℃; the high temperature protection of air-conditioning unit occurs through regular meeting, compressor can delayed startup behind the high temperature protection, and this will cause, and temperature sharply rises in the guest room; the quick accumulation of thermic load causes the high voltage protective of air-conditioning unit again, can cause serious consequence to metro operation thus.In addition, existing refrigeration system is when carrying out air-conditioning unit repair and maintenance, and the cost of changing compressor and cold-producing medium is higher.In sum, press for now this refrigeration system is improved.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the utility model aims to provide a kind of refrigeration system that is used for the air conditioner of subway vehicle unit, littler to guarantee that the guest room thermograde changes, satisfy the passenger comfort requirement, adapt to the railcar harsh environmental conditions, and reach effective conserve energy, reduce the effect of repair and maintenance cost.
A kind of refrigeration system that is used for the air conditioner of subway vehicle unit described in the utility model, described refrigeration system comprises first refrigeration subsystem and second refrigeration subsystem,
Described first refrigeration subsystem comprises end to end first condenser, first compressor bank and first evaporimeter, and described first compressor bank comprises two first compressors that are connected in parallel;
Described second refrigeration subsystem comprises end to end second condenser, second compressor bank and second evaporimeter, and described second compressor bank comprises two second compressors that are connected in parallel;
The input of described first evaporimeter is connected with the output of second condenser, and the output of first evaporimeter is connected with the input of described second compressor bank;
The input of described second evaporimeter is connected with the output of first condenser, and the output of second evaporimeter is connected with the input of described first compressor bank.
In the above-mentioned refrigeration system that is used for the air conditioner of subway vehicle unit, between described each first compressor and first condenser, be connected a high-voltage switch gear respectively between each second compressor and second condenser; The output of described first evaporimeter and second evaporimeter links to each other, and with the input of first compressor bank between and with the input of second compressor bank between be connected a low tension switch respectively.
In the above-mentioned refrigeration system that is used for the air conditioner of subway vehicle unit, described refrigeration system also comprises two condensation fan and two pressure fans that are installed in respectively on described first evaporimeter and second evaporimeter of being installed in respectively on described first condenser and second condenser.
Owing to adopted above-mentioned technical solution, four scroll compressors are in parallel in twos to overlap independently refrigeration subsystem with condenser, evaporimeter formation two to the utility model by adopting; And every compressor is provided with a high voltage protective switch, be used under the worst hot case condition, cold-producing medium distributes when unbalanced, stop this TV station compressor operating, the protection compressor is not damaged, the shared low-voltage variation device of every cover refrigeration subsystem, when really lacking cold-producing medium, system stops two compressor work, thereby can follow the start and stop quantity that controls four compressors according to the thermic load in the subway guest room,, satisfy passenger comfort to guarantee the littler variation of guest room thermograde, reduce air-conditioning unit starting current peak value, improve air-conditioning unit high temperature protection numerical value, adapt to the railcar harsh environmental conditions, effectively conserve energy; Refrigeration system of the present utility model helps maintenance in actual use and safeguards, after the compressor in the cover subsystem broke down, other three compressors still can be realized 75% refrigerating capacity, did not influence subway carrying operation.When changing compressor,, promptly reduced the compressor cost, thereby can effectively save maintenance cost owing to select for use 4 low power compressors to replace original 2 powerful compressors.
Description of drawings
Fig. 1 is a kind of schematic diagram that is used for the refrigeration system of air conditioner of subway vehicle unit of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, the utility model, promptly a kind of refrigeration system that is used for the air conditioner of subway vehicle unit comprises first refrigeration subsystem and second refrigeration subsystem, wherein,
First refrigeration subsystem comprises that end to end first condenser 11, first compressor bank and first evaporimeter, 13, the first compressor bank comprise two first compressors 12 that are connected in parallel;
Second refrigeration subsystem comprises that end to end second condenser 21, second compressor bank and second evaporimeter, 23, the second compressor bank comprise two second compressors 22 that are connected in parallel;
The input of first evaporimeter 13 is connected with the output of second condenser 21, and the output of first evaporimeter 13 is connected with the input of second compressor bank;
The input of second evaporimeter 23 is connected with the output of first condenser 11, and the output of second evaporimeter 23 is connected with the input of first compressor bank;
Between each first compressor 12 and first condenser 11, be connected a high-voltage switch gear 5 respectively between each second compressor 22 and second condenser 21; The output of first evaporimeter 13 and second evaporimeter 23 links to each other, and with the input of first compressor bank between and with the input of second compressor bank between be connected a low tension switch 6 respectively;
Refrigeration system of the present utility model also comprises two condensation fan 3 and two pressure fans 4 that are installed in respectively on first evaporimeter 13 and second evaporimeter 23 of being installed in respectively on first condenser 11 and second condenser 21.
In addition, refrigeration system of the present utility model can realize under 50 ℃ of situations of worst hot case by selecting the 134a cold-producing medium for use, work in the time of four compressors, and the high temperature protection temperature is above 55 ℃.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (3)
1. a refrigeration system that is used for the air conditioner of subway vehicle unit is characterized in that, described refrigeration system comprises first refrigeration subsystem and second refrigeration subsystem,
Described first refrigeration subsystem comprises end to end first condenser, first compressor bank and first evaporimeter, and described first compressor bank comprises two first compressors that are connected in parallel;
Described second refrigeration subsystem comprises end to end second condenser, second compressor bank and second evaporimeter, and described second compressor bank comprises two second compressors that are connected in parallel;
The input of described first evaporimeter is connected with the output of second condenser, and the output of first evaporimeter is connected with the input of described second compressor bank;
The input of described second evaporimeter is connected with the output of first condenser, and the output of second evaporimeter is connected with the input of described first compressor bank.
2. the refrigeration system that is used for the air conditioner of subway vehicle unit according to claim 1 is characterized in that, between described each first compressor and first condenser, be connected a high-voltage switch gear respectively between each second compressor and second condenser; The output of described first evaporimeter and second evaporimeter links to each other, and with the input of first compressor bank between and with the input of second compressor bank between be connected a low tension switch respectively.
3. the refrigeration system that is used for the air conditioner of subway vehicle unit according to claim 1 and 2, it is characterized in that described refrigeration system also comprises two condensation fan and two pressure fans that are installed in respectively on described first evaporimeter and second evaporimeter of being installed in respectively on described first condenser and second condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205872808U CN201885474U (en) | 2010-11-01 | 2010-11-01 | Cooling system for metro vehicle air-conditioning units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205872808U CN201885474U (en) | 2010-11-01 | 2010-11-01 | Cooling system for metro vehicle air-conditioning units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885474U true CN201885474U (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205872808U Expired - Fee Related CN201885474U (en) | 2010-11-01 | 2010-11-01 | Cooling system for metro vehicle air-conditioning units |
Country Status (1)
| Country | Link |
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| CN (1) | CN201885474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901168A (en) * | 2012-09-28 | 2013-01-30 | 中国扬子集团滁州扬子空调器有限公司 | Air-cooled heat pump cold/hot water machine set for improving partial load performance and control method thereof |
| CN104380011A (en) * | 2012-04-24 | 2015-02-25 | 泽洛瑞普姆公司 | Apparatus and methods for vehicle idle management |
| CN109425140A (en) * | 2017-09-01 | 2019-03-05 | 青岛海尔特种电冰柜有限公司 | Refrigerating circuit and refrigeration equipment based on non-azeotropic mixed working medium |
-
2010
- 2010-11-01 CN CN2010205872808U patent/CN201885474U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104380011A (en) * | 2012-04-24 | 2015-02-25 | 泽洛瑞普姆公司 | Apparatus and methods for vehicle idle management |
| CN104380011B (en) * | 2012-04-24 | 2017-03-08 | 泽洛瑞普姆公司 | Apparatus and method for vehicle idling management |
| CN102901168A (en) * | 2012-09-28 | 2013-01-30 | 中国扬子集团滁州扬子空调器有限公司 | Air-cooled heat pump cold/hot water machine set for improving partial load performance and control method thereof |
| CN109425140A (en) * | 2017-09-01 | 2019-03-05 | 青岛海尔特种电冰柜有限公司 | Refrigerating circuit and refrigeration equipment based on non-azeotropic mixed working medium |
| CN109425140B (en) * | 2017-09-01 | 2020-12-18 | 青岛海尔特种电冰柜有限公司 | Refrigeration circuit and refrigeration plant based on non-azeotropic mixed working medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20171101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |