CN201983539U - Low-temperature water chilling unit - Google Patents
Low-temperature water chilling unit Download PDFInfo
- Publication number
- CN201983539U CN201983539U CN2010206603777U CN201020660377U CN201983539U CN 201983539 U CN201983539 U CN 201983539U CN 2010206603777 U CN2010206603777 U CN 2010206603777U CN 201020660377 U CN201020660377 U CN 201020660377U CN 201983539 U CN201983539 U CN 201983539U
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- water chilling
- low
- economizer
- compressor
- condenser
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Abstract
The utility model relates to the technical field of water chilling units, in particular to a low-temperature water chilling unit, comprising a compressor, a condenser connected with a high-temperature high-pressure gas exhaust port of the compressor by a pipeline, an evaporator connected with a low-temperature low-pressure refrigerating steam suction port of the compressor by a pipeline and an expansion valve connected with a moderate-temperature low-pressure refrigerant liquid inlet of the evaporator by a pipeline. The low-temperature water chilling unit also comprises an oil separator for separating lubricating oil, an oil cooler for controlling the oil temperature of the compressor, an oil return system and relevant throttling devices, i.e. an electromagnetic valve and a corresponding expansion valve; and a double-liquid spraying system and an economizer system are specially adopted for aiming at a low-temperature machine. Moreover, the low-temperature water chilling unit has a reasonable and compact structure and is convenient to maintain.
Description
Technical field
The utility model relates to the handpiece Water Chilling Units technical field, particularly a kind of low-temperature cold water unit.
Background technology
At present, in the refrigeration system, when load increases, the raising of compressor rotary speed, the corresponding rising of delivery temperature descends cold-producing medium and lubricants performance, and compressor efficiency reduces, system reliability, stability decreases.By the ability that hydrojet can be regulated compressor incessantly, avoid the motor intermittent duty, thus conserve energy; Increase the compressor normal capacity,, can make more cold-producing medium enter compressor in suction muffler afterbody hydrojet.
But when worst cold case, not through cold excessively cold-producing medium, thermogenetic gas of absorption and more flash gas have influenced the heat exchange of evaporimeter and the efficient of compressor after entering evaporimeter.
The utility model content
The utility model provides a kind of biliquid to spray handpiece Water Chilling Units, to solve the shortcoming of prior art efficiency ratio of excessive discharge temperature, worst cold case (30 ℃) when low-temperature evaporation (30 ℃ ~-40 ℃).
In order to realize goal of the invention of the present utility model, the technical scheme of employing is as follows:
A kind of low-temperature cold water unit, comprise the compressor, oil eliminator, condenser and the evaporimeter that connect successively by pipeline, the low-temp low-pressure refrigeration steam air entry of evaporimeter and compressor is connected to form the loop by pipeline, also is provided with economizer between described condenser and the evaporimeter.
As a kind of preferred version, also be connected to expansion valve again between described evaporimeter and the economizer.
As a kind of preferred version, be connected to device for drying and filtering between described condenser and the economizer.
As a kind of preferred version, oil eliminator is connected with the input of condenser, and the output of condenser is connected with economizer, and economizer connects the economical and energy saving hole of compressor compresses chamber end.
As further preferred version, the output of condenser is connected with economizer by economizer expansion valve.
As further preferred version, the default mouth spray of compressor is connected respectively with the output of economizer and condenser.
As further preferred version again, default mouth spray is connected respectively by the output of expansion valve with economizer and condenser.
As further preferred version: described evaporimeter (5) be in board-like, the shell and tube exchanger any.
As further preferred version: described condenser (3) be in board-like, shell-tube type, the finned or double pipe heat exchanger any.
As further preferred version: described expansion valve again be in heating power expansion valve or the capillary any.
The utility model can effectively solve the problem at cooling-water machine excessive discharge temperature, worst cold case (below 30 ℃) efficiency ratio when low-temperature evaporation (30 ℃ ~-40 ℃).
Description of drawings
Fig. 1 system of the present utility model constitutes schematic diagram.
The specific embodiment
The utility model solves the problem at cooling-water machine excessive discharge temperature, worst cold case (below 30 ℃) efficiency ratio when low-temperature evaporation (30 ℃ ~-40 ℃).Compressor operating is carried out hydrojet to motor cavity, compression chamber when worst cold case, to reduce delivery temperature and oil temperature.Increase economizer with the supercooled liquid refrigerant, reduce the generation of flash gas, improve the heat-exchange capacity of evaporimeter.Thereby raising refrigerating capacity.It will be appreciated by those skilled in the art that below in conjunction with accompanying drawing for convenience and further specify.
As shown in Figure 1, after refrigerant compresses through compressor 1, become the gas of HTHP, in the oil content in compressor, most lubricating oil will be separated, and be back to compressor, and the refrigerant of HTHP carries less amount of lubrication oil and leaves compressor.After separating through the oily matchmaker of secondary oil separator 2, the oil that most lubricating oil is separated, separates through angle valve, the piping filter of secondary oil content bottom, get back to the low-pressure end of compressor.
The refrigerant that comes out from the secondary oil separator enters condenser 3, through after the heat exchange of condenser, refrigerant is condensed into liquid state, through entering 4 coolings of Overcold economizer after the device for drying and filtering expansion valve, economizer 4 is cooled to medium temperature (this temperature calculate by certain relation) with the refrigerant in the system.Enter evaporimeter 5, heat exchange evaporation in evaporimeter through the economizer 4 cold excessively refrigerant expansion valve of flowing through.Because the cold excessively of 4 pairs of refrigerants of economizer arranged, enter evaporimeter 5 back flash gas after 9 throttlings of refrigerant process refrigeration expansion valve and reduce in a large number.Thereby improved the heat exchange efficiency of evaporimeter.Cold media gas after the evaporation enters compressor 1 air entry and is compressed once more.More than this section be system's main fluid path.
Two spray systems: from main fluid path, draw a part of refrigerant and come out, after economizer expansion valve 10 throttlings, after in economizer 4, evaporating, pressure is controlled in a rational value, this value is greater than pressure pressure in the compression chamber, make the refrigerant and the flash gas of cooling economizer can get back to the terminal economical and energy saving of compression chamber hole 6, can be used for coolant exhaust temperature and oily temperature does not increase compressor load again.Thereby improved refrigerating efficiency.
From the system liquid pipe, draw a pipeline and enter compressor 1 default mouth spray 7, an expansion valve 8 is installed in this pipeline, guarantee the compressor safe and stable operation with cooling motor.Through calculating the cold of spray system, suction superheat is controlled in 5 ~ 10K.
Claims (10)
1. low-temperature cold water unit, comprise the compressor (1), oil eliminator (2), condenser (3) and the evaporimeter (5) that connect successively by pipeline, evaporimeter (5) is connected to form the loop with the low-temp low-pressure refrigeration steam air entry of compressor (1) by pipeline, it is characterized in that, also be provided with economizer (4) between described condenser (3) and the evaporimeter (5).
2. handpiece Water Chilling Units according to claim 1 is characterized in that, also is connected to expansion valve (9) between described evaporimeter (5) and the economizer (4) again.
3. handpiece Water Chilling Units according to claim 1 is characterized in that, is connected to device for drying and filtering (10) between described condenser (3) and the economizer (4).
4. according to claim 1 or 2 or 3 described handpiece Water Chilling Units, it is characterized in that, oil eliminator (2) is connected with the input of condenser (3), and the output of condenser (3) is connected with economizer (4), and economizer (4) connects the economical and energy saving hole (6) of compressor (1) compression chamber end.
5. handpiece Water Chilling Units according to claim 4 is characterized in that, the output of condenser (3) is connected with economizer (4) by economizer expansion valve (10).
6. handpiece Water Chilling Units according to claim 4 is characterized in that, the default mouth spray (7) of compressor (1) is connected respectively with the output of economizer (4) with condenser (3).
7. handpiece Water Chilling Units according to claim 8 is characterized in that, default mouth spray (7) is connected respectively with the output of economizer (4) with condenser (3) by expansion valve (8).
8. according to claim 1 or 2 or 3 described handpiece Water Chilling Units, it is characterized in that: described evaporimeter (5) in board-like, the shell and tube exchanger any.
9. according to claim 1 or 2 or 3 described handpiece Water Chilling Units, it is characterized in that: described condenser (3) in board-like, shell-tube type, the finned or double pipe heat exchanger any.
10. handpiece Water Chilling Units according to claim 2 is characterized in that: described expansion valve again be in heating power expansion valve or the capillary any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206603777U CN201983539U (en) | 2010-12-15 | 2010-12-15 | Low-temperature water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206603777U CN201983539U (en) | 2010-12-15 | 2010-12-15 | Low-temperature water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983539U true CN201983539U (en) | 2011-09-21 |
Family
ID=44610998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206603777U Expired - Fee Related CN201983539U (en) | 2010-12-15 | 2010-12-15 | Low-temperature water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363729A (en) * | 2012-03-31 | 2013-10-23 | 珠海格力电器股份有限公司 | Shell-and-tube condenser and air conditioning system with same |
| CN110160280A (en) * | 2019-06-18 | 2019-08-23 | 浙江国祥股份有限公司 | The evaporating condensation type water cooler of carrying liqs device for cooling |
-
2010
- 2010-12-15 CN CN2010206603777U patent/CN201983539U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363729A (en) * | 2012-03-31 | 2013-10-23 | 珠海格力电器股份有限公司 | Shell-and-tube condenser and air conditioning system with same |
| CN103363729B (en) * | 2012-03-31 | 2015-07-15 | 珠海格力电器股份有限公司 | Shell-and-tube condenser and air conditioning system with same |
| CN110160280A (en) * | 2019-06-18 | 2019-08-23 | 浙江国祥股份有限公司 | The evaporating condensation type water cooler of carrying liqs device for cooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510530, No. four, No. 1, North Orchard, East Zone, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Guangzhou star cooling equipment Group Co., Ltd. Address before: 510530 Guangzhou Province Economic and Technological Development Zone, the eastern part of the north section of Orchard Road, No. four, No. 1, No. Patentee before: Guangzhou Hengxing Refrigerating Machinery Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20181215 |