CN201014825Y - Centrifugal type refrigeration unit cooling system - Google Patents
Centrifugal type refrigeration unit cooling system Download PDFInfo
- Publication number
- CN201014825Y CN201014825Y CNU2007200499231U CN200720049923U CN201014825Y CN 201014825 Y CN201014825 Y CN 201014825Y CN U2007200499231 U CNU2007200499231 U CN U2007200499231U CN 200720049923 U CN200720049923 U CN 200720049923U CN 201014825 Y CN201014825 Y CN 201014825Y
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- centrifugal compressor
- motor
- condenser
- electric motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 238000005057 refrigeration Methods 0.000 title description 3
- 238000004804 winding Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract 4
- 239000000314 lubricant Substances 0.000 abstract 2
- 239000003507 refrigerant Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Images
Abstract
A cooling system for centrifugal refrigerating units, which comprises a condenser, an evaporator and a centrifugal compressor, wherein two input cooling pipelines, led out from the condenser, are respectively connected with the electric motor and the heat exchanger of the centrifugal compressor; the output cooling pipelines, respectively led out from the electric motor and the heat exchanger of the centrifugal compressor, are combined and connected to the evaporator; the input cooling pipelines respectively connected with the electric motor and the heat exchanger, are respectively connected in series with a throttle orifice plate, and the throttle orifice plates are respectively connected in parallel with an electronic expansion valve. When the cooling system is put to use, the high-temperature and high-pressure coolant coming out of the condenser is guided into two routes; when the oil temperature exceeds the preset temperature value, the electronic expansion valves are gradually opened, and when the coolant passes through the throttle orifice plates and the electronic expansion valves at the same time, the coolant is changed into liquid state of low temperature and low pressure. One route of the coolant is evaporated from the surface of the heat exchanger and the motor winding through latent heat of vaporization to cool the motor winding and the system lubricant, while the other route, as the lubricant is cooled, directly cools bearings and gears to ensure normal performance of the electric motor.
Description
[technical field]
The present invention relates to a kind of refrigeration unit cooling system, especially a kind of centrifugal refrigerating unit cooling system.
[background technology]
At present, centrifugal refrigerating machines in the air conditioner industry utilization, the water quench machine set systems that adopt more, it is air-cooled that the compression motor of this unit partly cools off most employing simultaneously, and above cooling provision is controlled complexity, and be subjected to the extraneous factor influence easily, wayward, complete machine temperature is raise, cause the bearing and the compression motor scaling loss of equipment unit, so must be reliable and stable the cooling of bearing and motor.
[utility model content]
The present invention overcomes the deficiencies in the prior art, provide a kind of simple and easy, energy-conservation, maintain easily, reliable and stable, avoid catastrophic failure to cause the centrifugal refrigerating unit cooling system of unit damage and the circulation of unit cooling can carrying out two parts self.
In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposals to realize:
A kind of centrifugal refrigerating unit cooling system, comprise condenser, evaporimeter and centrifugal compressor, drawing two-way input cooling line from condenser is connected with the motor of centrifugal compressor and the heat exchanger of centrifugal compressor respectively, the output cooling line of drawing from the heat exchanger of the motor of centrifugal compressor and centrifugal compressor merges the back and is connected with evaporimeter respectively, be in series with restricting orifice respectively on the input cooling line that it is characterized in that being connected respectively with motor and heat exchanger, described restricting orifice is parallel with electric expansion valve respectively.
Aforesaid a kind of centrifugal refrigerating unit cooling system is characterized in that described heat exchanger is a plate type heat exchanger.
Compared with prior art, advantage of the present invention:
This version has guaranteed the reliability service of centrifugal refrigerating machines, and having reduced may be because of the unit damage and the unnecessary parking of cutting off the water supply, cutting off the power supply and other outside catastrophic failures causing in the unit running process.By the part refrigerant cooling heating of kind of refrigeration cycle, more energy-conservation than other radiating mode, guaranteed efficiency of energy utilization.
[description of drawings]
Fig. 1 is a circulatory system schematic diagram of the present utility model.
[specific embodiment]
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
A kind of centrifugal refrigerating unit cooling system, comprise condenser 1, evaporimeter 2 and centrifugal compressor 3, drawing two-way input cooling line 4 from condenser 1 is connected with the motor 30 of centrifugal compressor 3 and the heat exchanger 31 of centrifugal compressor 3 respectively, the output cooling line 5 of drawing from the heat exchanger 31 of the motor 30 of centrifugal compressor 3 and centrifugal compressor 3 merges the back and is connected with evaporimeter 2 respectively, with motor 30 and input cooling line 4 that heat exchanger 31 is connected respectively on be in series with restricting orifice 6 respectively, described restricting orifice 6 is parallel with electric expansion valve 7 respectively.During this system works, the HTHP refrigerant that comes out from condenser 1 is divided into two-way, (＜52 ℃) restricting orifice 6 leads in the normal range (NR) when oily temperature is in, electric expansion valve 7 full cut-offs, keep general system cools, electric expansion valve 7 is progressively opened after the oil temperature surpasses design temperature point, refrigerant is simultaneously by behind restricting orifice 6 and the electric expansion valve 7, refrigerant becomes the low-temp low-pressure liquid condition, one the tunnel evaporates by the latent heat of vaporization at heat exchanger 31 and motor 30 winding surfaces, thus cooling motor 30 windings and system oil; Another lubricating oil cooling back, road is cooling bearing and gear directly, guarantees motor 30 operate as normal.
The utility model in use, motor adopts the insulating materials of anti-R134a to make, model specification according to unit, determine motor 30 caloric values and gear, the caloric value of bearing etc., calculated the required heat exchange amount of motor and lubricating oil, realize oil circulation by the separate unit oil pump then, one plate type heat exchanger 31 is set on oil circuit, carry out the heat exchange designing and calculating according to plate type heat exchanger 31 and refrigerant cooling fluid differential pressure flow then, determine that required caliber and one section pipeline in parallel carry out the safeguard protection setting, use evaporation, condensation side pressure reduction and latent heat discharge and reach the cooling purpose, the heating of gear-bearing is cooled off by lubricating oil, guarantee the absolute safe and reliable operation of unit; Wherein on input cooling line 4, adopt restricting orifice 6 and electric expansion valve 7 parallel connections to control, utilize to be arranged on motor 30 inner hydrojet positions, adopt the hydrojet type of cooling to guarantee that inner winding evenly cools off.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only.If those skilled in the art makes unsubstantiality, conspicuous changes and improvements according to the present invention, all should belong to the scope of claim protection of the present invention.
Claims (2)
1. centrifugal refrigerating unit cooling system, comprise condenser (1), evaporimeter (2) and centrifugal compressor (3), drawing two-way input cooling line (4) from condenser (1) is connected with the motor (30) of centrifugal compressor (3) and the heat exchanger (31) of centrifugal compressor (3) respectively, the output cooling line (5) of drawing from the heat exchanger (31) of the motor (30) of centrifugal compressor (3) and centrifugal compressor (3) merges the back and is connected with evaporimeter (2) respectively, it is characterized in that with motor (30) and input cooling line (4) that heat exchanger (31) is connected respectively on be in series with restricting orifice (6) respectively, described restricting orifice (6) is parallel with electric expansion valve (7) respectively.
2. a kind of centrifugal refrigerating unit cooling system according to claim 1 is characterized in that described heat exchanger (31) is a plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200499231U CN201014825Y (en) | 2007-03-30 | 2007-03-30 | Centrifugal type refrigeration unit cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200499231U CN201014825Y (en) | 2007-03-30 | 2007-03-30 | Centrifugal type refrigeration unit cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014825Y true CN201014825Y (en) | 2008-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200499231U Expired - Lifetime CN201014825Y (en) | 2007-03-30 | 2007-03-30 | Centrifugal type refrigeration unit cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014825Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105695A (en) * | 2008-07-25 | 2011-06-22 | 东京电力株式会社 | Compressor and freezer |
| CN104566852A (en) * | 2014-12-15 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner and motor cooling method of air conditioner |
| CN105339743A (en) * | 2013-06-04 | 2016-02-17 | 大金工业株式会社 | Turbo refrigerator |
| CN105387644A (en) * | 2015-12-02 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Water chilling unit and control method thereof |
| WO2017215493A1 (en) * | 2016-06-12 | 2017-12-21 | 重庆美的通用制冷设备有限公司 | Refrigerating unit |
| CN110591650A (en) * | 2019-09-12 | 2019-12-20 | 珠海格力电器股份有限公司 | Heat transfer composition suitable for centrifugal refrigerating unit |
-
2007
- 2007-03-30 CN CNU2007200499231U patent/CN201014825Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105695A (en) * | 2008-07-25 | 2011-06-22 | 东京电力株式会社 | Compressor and freezer |
| CN102105695B (en) * | 2008-07-25 | 2013-11-20 | 东京电力株式会社 | Compressor and freezer |
| CN105339743A (en) * | 2013-06-04 | 2016-02-17 | 大金工业株式会社 | Turbo refrigerator |
| US10234175B2 (en) | 2013-06-04 | 2019-03-19 | Daikin Industries, Ltd. | Turbo refrigerator |
| CN104566852A (en) * | 2014-12-15 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner and motor cooling method of air conditioner |
| CN104566852B (en) * | 2014-12-15 | 2017-02-22 | 珠海格力电器股份有限公司 | Air conditioner and motor cooling method of air conditioner |
| CN105387644A (en) * | 2015-12-02 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Water chilling unit and control method thereof |
| WO2017215493A1 (en) * | 2016-06-12 | 2017-12-21 | 重庆美的通用制冷设备有限公司 | Refrigerating unit |
| CN110591650A (en) * | 2019-09-12 | 2019-12-20 | 珠海格力电器股份有限公司 | Heat transfer composition suitable for centrifugal refrigerating unit |
| CN110591650B (en) * | 2019-09-12 | 2020-09-25 | 珠海格力电器股份有限公司 | Heat transfer composition suitable for centrifugal refrigerating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |