CN103234307A - Automatic oil return device of refrigeration system - Google Patents
Automatic oil return device of refrigeration system Download PDFInfo
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- CN103234307A CN103234307A CN 201310175256 CN201310175256A CN103234307A CN 103234307 A CN103234307 A CN 103234307A CN 201310175256 CN201310175256 CN 201310175256 CN 201310175256 A CN201310175256 A CN 201310175256A CN 103234307 A CN103234307 A CN 103234307A
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- oil
- compressor
- refrigeration system
- oil return
- pipe
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Abstract
The invention relates to an oil return device of a refrigeration system, and particularly to an automatic oil return device of the refrigeration system. The automatic oil return device comprises an exhaust pipe, a compressor, an air suction pipe, an oil storage elbow, lubricating oil, an oil return pipe, an oil collection bag outlet pipe, an oil collection bag, and an oil collection bag inlet pipe, wherein the compressor is connected with a condenser, an expansion valve, an evaporator and the oil storage elbow sequentially in a closed loop; and the oil collection bag is arranged at the lowest point of the evaporator. The automatic oil return device of the refrigeration system has the advantages of preventing damage of the compressor due to oil starvation as return air of the compressor is utilized to take the lubricating oil back to the compressor, and being simple to control and install, reliable to run, and easy in productive operation.
Description
Technical field
The present invention relates to refrigerating plant, especially a kind of refrigeration system is from oil return apparatus.
Background technology
In the refrigeration system running, condenser, evaporimeter and conveying pipe of refrigerant road all can store the lubricating oil of a part of compressor.Refrigeration system for no oil separating device, the oil mass of getting back to compressor inside after the lubricating oil of discharging from compressor with higher pressure refrigerant gas is through a kind of refrigeration cycle is very few, when being not enough to satisfy the lubricating requirement of compressor, petrol starvation can take place in compressor, cause lubricated insufficient, the lighter causes compressor operating operation troubles to occur, wear and tear parts and damage compressor of weight person.Existing refrigeration system is utilized the mutual dissolution characteristics of cold-producing medium and lubricating oil, compressor also sucks back the lubricating oil that has in air-breathing the crankcase of compressor simultaneously when sucking cold-producing medium, because lubricating oil uses dissolving cold-producing medium ability to descend for a long time in the refrigeration system, and the cold-producing medium that uses of refrigerating plant is impure etc., and reason will cause effectively oil return.Therefore, be necessary to take measures to improve the oil return efficient of refrigeration system.
Summary of the invention
The objective of the invention is to overcome defective of the prior art, adopt a kind of refrigeration system from oil return apparatus, lubricating oil in the oil-collecting bag is in time drained into compressor crankcase, easy operating is installed simply.
For achieving the above object, technical scheme of the present invention is to adopt a kind of refrigeration system from oil return apparatus, comprise that blast pipe, compressor, air intake duct, trapped fuel are curved, lubricating oil, oil return pipe, oil-collecting contracts out pipe, oil-collecting bag, oil-collecting bag inlet pipe, described compressor is connected with condenser, expansion valve, evaporimeter, the curved closed loop successively of trapped fuel, and described oil-collecting bag is installed in evaporimeter minimum point place.
Described oil return pipe connects oil-collecting bag bottom and the curved bottom of trapped fuel, and the curved bottom of described trapped fuel is lower than the minimum point of oil-collecting bag.
Basic principle of the present invention: after using the present invention, the lubricating oil that flows to the oil-collecting bag is stored in the bottom, under the effect of gravity, flow to the curved bottom of trapped fuel, the sealing of formation liquid under the work of compressor, causes the curved front and back of trapped fuel pressure differential, the lubricating oil of the curved bottom of trapped fuel is drained into compressor crankcase, lubricate compressors prevents that effectively compressor lacks lubricating oil, causes fault.
Beneficial effect of the present invention is:
(1) utilizes compressor return air that lubricating oil is taken back compressor, prevent the compressor oil starvation.
(2) control is simple, reliable.
(3) install simply, be easy to production operation.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
Among the figure: 1, curved 5, the lubricating oil 6 of blast pipe 2, compressor 3, air intake duct 4, trapped fuel, oil return pipe 7, oil-collecting contract out pipe 8, oil-collecting bag 9, oil-collecting bag inlet pipe.
The specific embodiment
Be further described in conjunction with the specific embodiment of the invention of Fig. 1:
According to technical scheme provided by the invention, a kind of refrigeration system is from oil return apparatus, comprise that blast pipe 1, compressor 2, air intake duct 3, trapped fuel are curved 4, lubricating oil 5, oil return pipe 6, oil-collecting contracts out pipe 7, oil-collecting bag 8, oil-collecting bag inlet pipe 9, described compressor 2 is connected with condenser, expansion valve, evaporimeter, trapped fuel curved 4 closed loop successively, and described oil-collecting bag 8 is installed in the minimum point place of evaporimeter.
Described oil return pipe 6 connects the bottom of oil-collecting bag 8 bottoms and trapped fuel curved 4, and curved 4 bottoms of described trapped fuel are lower than the minimum point of oil-collecting bag 8.
The course of work of the present invention is:
In the refrigeration system, compressor 2 and condenser, expansion valve, evaporimeter, trapped fuel curved 4 closed loop successively connects, after using the present invention, when refrigeration system is worked, lubricating oil 5 is discharged by compressor 2, through condenser and evaporimeter, this moment, lubricating oil 5 accumulated in the oil-collecting bag 8, because trapped fuel curved 4 is lower than oil-collecting bag 8, lubricating oil 5 in the oil-collecting bag 8 flows to the bottom of trapped fuel curved 4 by oil return pipe 6, seal up the air intake duct 3 of compressor 2 gradually, during refrigeration system compressor 2 operations, form low pressure at air intake duct 3, from the next cold-producing medium relatively high pressure of evaporimeter, under this pressure reduction, the lubricating oil 5 of sealing is inhaled into the crankcase of compressor 2, lubricate compressors 2 with cold-producing medium.
The advantage of present embodiment is, utilizes compressor 2 return-airs that lubricating oil 5 is taken back compressor 2, prevents compressor 2 oil starvations and damages, and control is simple, and is reliable, installs simply, is easy to production operation.
Claims (2)
1. a refrigeration system is from oil return apparatus, comprise that blast pipe, compressor, air intake duct, trapped fuel are curved, lubricating oil, oil return pipe, oil-collecting contracts out pipe, oil-collecting bag, oil-collecting bag inlet pipe, it is characterized in that: described compressor is connected with condenser, expansion valve, evaporimeter, the curved closed loop successively of trapped fuel, and described oil-collecting bag is installed in evaporimeter minimum point place.
2. a kind of refrigeration system according to claim 1 is characterized in that from oil return apparatus: described oil return pipe connects oil-collecting bag bottom and the curved bottom of trapped fuel, and the curved bottom of described trapped fuel is lower than the minimum point of oil-collecting bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310175256 CN103234307A (en) | 2013-05-08 | 2013-05-08 | Automatic oil return device of refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310175256 CN103234307A (en) | 2013-05-08 | 2013-05-08 | Automatic oil return device of refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103234307A true CN103234307A (en) | 2013-08-07 |
Family
ID=48882359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310175256 Pending CN103234307A (en) | 2013-05-08 | 2013-05-08 | Automatic oil return device of refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103234307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560238A (en) * | 2017-10-18 | 2018-01-09 | 伊马莱富（北京）制药系统有限公司 | The oil return apparatus and oil return method of a kind of refrigeration system |
| CN114739052A (en) * | 2022-05-05 | 2022-07-12 | 浙江思科制冷股份有限公司 | Oil return system of air conditioning unit |
-
2013
- 2013-05-08 CN CN 201310175256 patent/CN103234307A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560238A (en) * | 2017-10-18 | 2018-01-09 | 伊马莱富（北京）制药系统有限公司 | The oil return apparatus and oil return method of a kind of refrigeration system |
| CN107560238B (en) * | 2017-10-18 | 2023-07-04 | 伊马莱富（北京）制药系统有限公司 | Oil return device and oil return method of refrigeration system |
| CN114739052A (en) * | 2022-05-05 | 2022-07-12 | 浙江思科制冷股份有限公司 | Oil return system of air conditioning unit |
| CN114739052B (en) * | 2022-05-05 | 2024-05-03 | 浙江思科制冷股份有限公司 | Oil return system of air conditioning unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |