CN201014825Y - A centrifugal refrigeration unit cooling system - Google Patents
A centrifugal 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
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- motor
- heat exchanger
- centrifugal
- centrifugal compressor
- condenser
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- 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
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- Motor Or Generator Cooling System (AREA)
Abstract
一种离心式制冷机组冷却系统，包括冷凝器、蒸发器和离心压缩机，从冷凝器引出两路输入冷却管路分别与离心压缩机的电机和离心压缩机的换热器连接，分别从离心压缩机的电机和换热器引出的输出冷却管路合并后与蒸发器连接，在与电机和换热器分别连接的输入冷却管路上分别串联有节流孔板，所述节流孔板分别并联有电子膨胀阀；该系统工作时，从冷凝器出来的高温高压冷媒分为两路，当油温超过设定温度点后电子膨胀阀逐步打开，冷媒同时通过节流孔板和电子膨胀阀后，冷媒变为低温低压液体状态，一路在换热器和电机绕组表面通过汽化潜热蒸发，从而冷却电机绕组和系统润滑油；另一路润滑油冷却后直接冷却轴承和齿轮，保证电机正常工作。
A centrifugal refrigerating unit cooling system, including a condenser, an evaporator and a centrifugal compressor, two input cooling pipelines leading out from the condenser are respectively connected with the motor of the centrifugal compressor and the heat exchanger of the centrifugal compressor, respectively connected from the centrifugal The output cooling pipelines drawn from the motor of the compressor and the heat exchanger are combined and connected to the evaporator, and the input cooling pipelines connected to the motor and the heat exchanger are respectively connected in series with throttling orifice plates, and the throttling orifice plates are respectively There is an electronic expansion valve connected in parallel; when the system is working, the high-temperature and high-pressure refrigerant coming out of the condenser is divided into two paths. When the oil temperature exceeds the set temperature point, the electronic expansion valve is gradually opened, and the refrigerant passes through the throttling orifice and the electronic expansion valve at the same time. Finally, the refrigerant turns into a low-temperature and low-pressure liquid state, and one way evaporates through the latent heat of vaporization on the surface of the heat exchanger and the motor winding, thereby cooling the motor winding and the system lubricating oil; the other way lubricating oil cools and directly cools the bearings and gears to ensure the normal operation of the 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 | A centrifugal refrigeration unit cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200499231U CN201014825Y (en) | 2007-03-30 | 2007-03-30 | A centrifugal refrigeration unit cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014825Y true CN201014825Y (en) | 2008-01-30 |
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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 | A centrifugal refrigeration unit cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014825Y (en) |
Cited By (9)
| 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 |
| CN112556254A (en) * | 2020-12-21 | 2021-03-26 | 珠海格力电器股份有限公司 | Oil separator and air conditioning system |
| CN112665202A (en) * | 2020-12-21 | 2021-04-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system |
| CN119531987A (en) * | 2024-10-25 | 2025-02-28 | 重庆小康动力有限公司 | Double sump lubrication system with integrated air conditioning |
-
2007
- 2007-03-30 CN CNU2007200499231U patent/CN201014825Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105695B (en) * | 2008-07-25 | 2013-11-20 | 东京电力株式会社 | Compressor and freezer |
| CN102105695A (en) * | 2008-07-25 | 2011-06-22 | 东京电力株式会社 | Compressor and freezer |
| US10234175B2 (en) | 2013-06-04 | 2019-03-19 | Daikin Industries, Ltd. | Turbo refrigerator |
| CN105339743A (en) * | 2013-06-04 | 2016-02-17 | 大金工业株式会社 | 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 |
| CN112556254A (en) * | 2020-12-21 | 2021-03-26 | 珠海格力电器股份有限公司 | Oil separator and air conditioning system |
| CN112665202A (en) * | 2020-12-21 | 2021-04-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system |
| CN112665202B (en) * | 2020-12-21 | 2024-06-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system |
| CN112556254B (en) * | 2020-12-21 | 2025-04-01 | 珠海格力电器股份有限公司 | Oil separator, air conditioning system |
| CN119531987A (en) * | 2024-10-25 | 2025-02-28 | 重庆小康动力有限公司 | Double sump lubrication system with integrated air conditioning |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |