CN201740315U - Oil balance device for parallel-compressor air conditioner - Google Patents
Oil balance device for parallel-compressor air conditioner Download PDFInfo
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- CN201740315U CN201740315U CN 201020260453 CN201020260453U CN201740315U CN 201740315 U CN201740315 U CN 201740315U CN 201020260453 CN201020260453 CN 201020260453 CN 201020260453 U CN201020260453 U CN 201020260453U CN 201740315 U CN201740315 U CN 201740315U
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Abstract
The utility model relates to an oil balance device for a parallel-compressor air conditioner, comprising an oil storage tank, wherein the lower end of the oil storage tank is communicated with the parallel compressor of the air conditioner, and the upper end thereof is communicated with the lower end of an oil and air separator of the air conditioner through a pipeline; a connecting pipeline between the oil storage tank and the oil and air separator is provided with a valve and a temperature decreasing device, the valve is used for controlling the pipeline to be opened and closed, and the temperature decreasing device is used for decreasing the temperature of the lubricating oil in the connecting pipeline. The utility model has the advantages that the oil level can maintain certain level when the parallel compressors are in running; each compressor cannot be damaged due to oil starvation; and the lubricating oil in the compressor cannot spill out of the oil tank due to a large amount.
Description
Technical field
The utility model relates to air conditioner technical field, specifically is a kind of oil balancing unit that is used for parallel compressor air-conditioning device.
Background technology
Along with the expansion of air-conditioning system application, and the area of air-conditioning use occasion is increasing, use the air-conditioning unit refrigeration of separate unit compressor or heat limited in one's ability, and adopt the cost of air-conditioning unit of many cover single compressors very high.Consider from the angle that reduces cost, adopt the air-conditioning unit of multiple compressors parallel connection, to adapt to the needs of large tracts of land air-conditioning occasion.
The parallel technology of compressor has multiple, as freezing compressor in parallel, unbalanced compressor in parallel, balanced type compressor in parallel.For balanced type compressor in parallel as shown in Figure 1, pressure between each compressor 1 and oil level are realized by gas balance pipe 11 and oil balance tube 10 respectively.
On the theory, can keep oil level unanimity in each compressor 1 oil sump by oil balance tube 10 gentle balance pipes 11 between each compressor 1 in parallel in the balanced type of the air-conditioner compressor assembly in parallel, the oil level that part compressor 1 can not occur is too high, and the too low situation of other compressor 1 oil level, and in fact, this ideal situation seldom occurs.The exhaust of each compressor 1 in parallel mixes the back and enters gs-oil separator 5 by exhaust main 3, the exhaust of isolating behind the lubricating oil enters in the pipeline of air-conditioner refrigerating system, isolated lubricating oil is back to respectively by oil return capillary 7 in total muffler 9 of each compressor 1, is returned in each compressor 1 by total muffler 9 again.But, because the influence of the factors such as horizontality that the design processing of gas balance pipe 11 and gas and oil equilibration pipe 10, air-conditioner are installed, gas balance pipe and oil balance tube are difficult to reach abswolute level, thereby cause each compressor oil level just to differ, even can cause part compressor 1 to damage compressor because of oil starvation, and then influencing service life of compressor, security is relatively poor.
The utility model content
Technical problem to be solved in the utility model is, is provided a kind of service life of improving compressor, and the safer oil balancing unit that is used for parallel compressor air-conditioning device.
For solving the problems of the technologies described above, the utility model provides a kind of oil balancing unit that is used for parallel compressor air-conditioning device, comprise oil storage tank, the lower end of this oil storage tank is through being communicated with each compressor in parallel of air-conditioner, the upper end of this oil storage tank is communicated with through the lower end of connecting pipe with the gs-oil separator of air-conditioner, and the connecting pipe between oil storage tank and the gs-oil separator is provided with valve that is used for control connection pipeline break-make and the heat sink that is used to reduce the connecting pipe lubricating oil temperature.
After adopting above structure, the utility model oil balancing unit compared with prior art has the following advantages:
By connecting pipe the HTHP lubricating oil in the gs-oil separator is introduced in the oil storage tank, when pressure in the oil storage tank and oil level reach certain value, close the valve on the connecting pipe, because oil storage tank is communicated with each compressor in parallel, like this, when the oil level in each compressor occurs inconsistent the time, it is the compressor make-up oil of oil starvation that lubricating oil in the oil storage tank will preferentially hang down oil level, valve on the connecting pipe is interrupted opening and closing, like this, can guarantee that each compressor in parallel oil level in running keeps certain height constantly, guarantee that each compressor can not damage because of oil starvation, can avoid the lubricating oil in the compressor too much to overflow oil sump again.
In addition, another advantage of the present utility model is: when outdoor environment temperature is very low, by being interrupted Open valve, the lubricating oil of the HTHP in the gs-oil separator is introduced in the balance pipe, can improve between each compressor the temperature of lubricating oil in the oil balance tube like this, reduce oil body, guaranteed the promptness and the reliability of oily balance between each compressor in parallel.
As improvement, described valve is a magnetic valve.Magnetic valve is convenient to control, operates comparatively easy.
As further improvement, described heat sink is a capillary, described capillary is between gs-oil separator and connecting pipe, the lower end of the gs-oil separator in a described end capillaceous and the air-conditioning system is communicated with, the other end is communicated with connecting pipe, and described magnetic valve is installed on the connecting pipe between capillary and the oil balance tube.Capillary can be suitable reduction from gs-oil separator, introduce the temperature and pressure of the lubricating oil in the oil storage tank, can protect magnetic valve like this, prolong its service life.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for the oil balancing unit user mode of parallel compressor air-conditioning device;
Shown in the figure 1, compressor; 3, total air escape pipe; 5, gs-oil separator; 6, outlet; 7, oil return capillary; 9, total muffler; 10, oil balance tube; 11, gas balance pipe; 12, capillary; 13, magnetic valve; 14, oil storage tank.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in drawings, air-conditioner described in the utility model, the compressor 1 that comprises gs-oil separator 5 and many parallel connections, be example with two in the present embodiment present embodiment, be provided with gas balance pipe 11 and oil balance tube 10 between described two compressors 1, the total air escape pipe 3 of described two compressors 1 is communicated with gs-oil separator 5, the outlet 6 of gs-oil separator 5 is communicated with the refrigeration system of air-conditioner, by oil return capillary 7 lubricating oil in the gs-oil separator 5 is incorporated in total muffler 9 between gs-oil separator 5 and above-mentioned two compressors 1.
The oil balancing unit structure that is used for parallel compressor air-conditioning device of the present utility model is, it comprises oil storage tank 14, the lower end of this oil storage tank 14 is through being communicated with the compressor 1 of two parallel connections in the above-mentioned air-conditioner, the upper end of this oil storage tank 14 is communicated with through the lower end of connecting pipe 8 with the gs-oil separator 5 of air-conditioner, connecting pipe 8 between oil storage tank 14 and the gs-oil separator 5 is provided with the valve that is used for control connection pipeline 8 break-makes, for ease of operation, this valve 13 can be selected magnetic valve 13 for use.Because the lubricating oil temperature in the gs-oil separator 5 is higher, can also be provided for reducing that lubricating oil is the heat sink of lubricating oil temperature in the connecting pipe 8 on the connecting pipe 8 between above-mentioned magnetic valve 13 and gs-oil separator 5, heat sink is good with capillary 12, its cost is lower, and the decrease temperature and pressure effect to lubricating oil in the connecting pipe 8 of flowing through is better, this capillary (12) is between gs-oil separator 5 and connecting pipe 8, the lower end of the gs-oil separator 5 in one end of capillary 12 and the air-conditioning system is communicated with, the other end is communicated with connecting pipe 8, and described magnetic valve 13 is installed on the connecting pipe 8 between capillary 12 and the oil balance tube 14.
Be interrupted unlatching by system's control magnetic valve 13, be introduced in the oil storage tank 14 after the HTHP lubricating oil decrease temperature and pressure of gs-oil separator 5 bottoms, guaranteed to be filled with a certain amount of lubricating oil at any time in the oil storage tank 14, the temperature and pressure of the lubricating oil in the oil storage tank 14 still is higher than the temperature and pressure of lubricating oil in two above-mentioned compressor 1 oil sumps in parallel at this moment, like this, oil storage tank 14 is preserved a certain amount of lubricating oil always in compressor 1 running of two parallel connections.Suppose a certain moment in running, install when departing from that oil level hangs down in the oil sump that horizontal direction far causes one of them compressor 1 when oil level reduces in one of them compressor 1 oil sump or when the gas and oil equilibration pipe between the oil sump of these two compressors 10, because oil level is higher than the oil level in this compressor 1 oil sump in the oil storage tank 14, and pressure is higher than the pressure of this compressor 1 oil sump in the oil storage tank 14.Like this, the lubricating oil in the oil storage tank 14 can preferentially enter in the oil sump of the lower compressor of this oil level 1 by gas and oil equilibration pipe 10 in time, the oil level balance in these two compressors 1.
In addition, when moving under the low outdoor temperature condition winter, frosting is serious on the gas and oil equilibration pipe 10 in the conventional balanced type compressor assembly in parallel between the oil sump of compressor 1, cause gas and oil equilibration pipe 10 interior lubricating oil viscosities to improve greatly, flowability weakens greatly, has influenced the oily balance between the compressor 1.And in using air-conditioner of the present utility model, the HTHP lubricating oil of introducing from gs-oil separator 5 has improved the pressure and temperature in the oil storage tank 14, also improved the temperature of lubricating oil in the gas and oil equilibration pipe 10, reduce oil body, improve the flowability of lubricating oil in gas and oil equilibration pipe 10, so just can improve the promptness of oily balance between each compressor 1.
The utility model not only is confined to above embodiment, and its concrete structure allows various variations, as: the quantity of compressor in parallel can also be three, four or more; The material of oil storage tank, form and size can change according to actual conditions; Capillary can also substitute with electric expansion valve; Or the like.In a word, all various variations of being done in the utility model independent claims protection domain are all at protection domain of the present utility model.
Claims (3)
1. oil balancing unit that is used for parallel compressor air-conditioning device, it is characterized in that: comprise oil storage tank (14), the lower end of this oil storage tank (14) is through being communicated with each compressor in parallel (1) of air-conditioner, the upper end of this oil storage tank (14) is communicated with through the lower end of connecting pipe (8) with the gs-oil separator (5) of air-conditioner, and the connecting pipe (8) between oil storage tank (14) and the gs-oil separator (5) is provided with valve that is used for control connection pipeline (8) break-make and the heat sink that is used to reduce connecting pipe (8) lubricating oil temperature.
2. the oil balancing unit that is used for parallel compressor air-conditioning device according to claim 1 is characterized in that: described valve (13) is a magnetic valve (13).
3. the oil balancing unit that is used for parallel compressor air-conditioning device according to claim 2, it is characterized in that: described heat sink is capillary (12), described capillary (12) is positioned between gs-oil separator (5) and the connecting pipe (8), the lower end of the gs-oil separator (5) in one end of described capillary (12) and the air-conditioning system is communicated with, the other end is communicated with connecting pipe (8), and described magnetic valve (13) is installed on the connecting pipe (8) between capillary (12) and the oil balance tube (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020260453 CN201740315U (en) | 2010-07-12 | 2010-07-12 | Oil balance device for parallel-compressor air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020260453 CN201740315U (en) | 2010-07-12 | 2010-07-12 | Oil balance device for parallel-compressor air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740315U true CN201740315U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020260453 Expired - Lifetime CN201740315U (en) | 2010-07-12 | 2010-07-12 | Oil balance device for parallel-compressor air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN201740315U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331123A (en) * | 2011-05-30 | 2012-01-25 | 宁波奥克斯电气有限公司 | Safety control method for lubricating oil of multi-unit air conditioner of screw compressor |
| CN103062948A (en) * | 2012-12-29 | 2013-04-24 | 宁波奥克斯电气有限公司 | Dual parallel compressor screw water chilling unit |
| CN103363724A (en) * | 2012-04-10 | 2013-10-23 | 丹佛斯（天津）有限公司 | Oil balance device for oil balance between compressors |
| CN103512279A (en) * | 2013-04-17 | 2014-01-15 | 广东美芝制冷设备有限公司 | Air conditioner |
| CN103573638A (en) * | 2012-08-02 | 2014-02-12 | 珠海格力电器股份有限公司 | Medium-pressure oil storage device and compressor system with same |
| US10557651B2 (en) | 2015-10-15 | 2020-02-11 | Danfoss (Tianjin) Ltd. | Oil-gas balancing apparatus and compressor system with the same |
-
2010
- 2010-07-12 CN CN 201020260453 patent/CN201740315U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331123A (en) * | 2011-05-30 | 2012-01-25 | 宁波奥克斯电气有限公司 | Safety control method for lubricating oil of multi-unit air conditioner of screw compressor |
| CN103363724A (en) * | 2012-04-10 | 2013-10-23 | 丹佛斯（天津）有限公司 | Oil balance device for oil balance between compressors |
| CN103363724B (en) * | 2012-04-10 | 2016-01-13 | 丹佛斯（天津）有限公司 | For the oil balancing unit of compressor chamber oil balance |
| CN103573638A (en) * | 2012-08-02 | 2014-02-12 | 珠海格力电器股份有限公司 | Medium-pressure oil storage device and compressor system with same |
| CN103573638B (en) * | 2012-08-02 | 2016-03-23 | 珠海格力电器股份有限公司 | Middle pressure Fuel Tanking Unit and there is in this compressor assembly of pressing Fuel Tanking Unit |
| CN103062948A (en) * | 2012-12-29 | 2013-04-24 | 宁波奥克斯电气有限公司 | Dual parallel compressor screw water chilling unit |
| CN103062948B (en) * | 2012-12-29 | 2015-04-08 | 宁波奥克斯电气有限公司 | Dual parallel compressor screw water chilling unit |
| CN103512279A (en) * | 2013-04-17 | 2014-01-15 | 广东美芝制冷设备有限公司 | Air conditioner |
| CN103512279B (en) * | 2013-04-17 | 2015-12-23 | 广东美芝制冷设备有限公司 | Air-conditioner |
| US10557651B2 (en) | 2015-10-15 | 2020-02-11 | Danfoss (Tianjin) Ltd. | Oil-gas balancing apparatus and compressor system with the same |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
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| CX01 | Expiry of patent term |