CN102393102A - Air suction and injection oil return device of vehicle air conditioner - Google Patents
Air suction and injection oil return device of vehicle air conditioner Download PDFInfo
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- CN102393102A CN102393102A CN2011103358946A CN201110335894A CN102393102A CN 102393102 A CN102393102 A CN 102393102A CN 2011103358946 A CN2011103358946 A CN 2011103358946A CN 201110335894 A CN201110335894 A CN 201110335894A CN 102393102 A CN102393102 A CN 102393102A
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- oil
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- injector
- air
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Abstract
The invention relates to an oil return device of a vehicle air conditioner, in particular to an air suction and injection oil return device of a vehicle air conditioner, comprising an exhaust pipe, a compressor, an air suction pipe, an oil exit pipe, an injector, an oil collecting pocket outlet pipe, an oil collecting pocket, an evaporator and an oil collecting pocket inlet pipe, wherein the compressor is in closed-loop connection with the condenser, an expansion valve, the evaporator and the injector in sequence, the oil pocket is installed at the lowest point of the evaporator, and the oil exit pipe is connected with the bottom of the oil collecting pocket and a diversion chamber of the injector. The invention has the advantages that the injector on an air return pipe of the compressor is used for bringing lubricating oil back into the compressor to prevent oil starvation of the compressor, and the oil return device provided by the invention is easy to control, reliable in operation, simple to install and easy for production operation.
Description
Technical field
The present invention relates to automotive air conditioning device, the air-breathing injection oil return apparatus of especially a kind of air conditioning for automobiles.
Background technology
In the automotive air-conditioning system running, condenser, evaporimeter and conveying pipe of refrigerant road all can store the lubricating oil of a part of compressor.Automobile refrigerating air-conditioning system for no oil separating device; It is very few after the lubricating oil of discharging from compressor with higher pressure refrigerant gas is through a kind of refrigeration cycle, to get back to the inner oil mass of compressor; When being not enough to satisfy the lubricating requirement of compressor, petrol starvation can take place in compressor, causes lubricated insufficient; The lighter causes compressor operating operation troubles to occur, wear and tear parts and damage compressor of weight person.Existing automobile refrigerating air-conditioning system is utilized the mutual dissolution characteristics of cold-producing medium and lubricating oil; Compressor is also inhaled the crankcase of getting back to compressor with the lubricating oil that has in air-breathing simultaneously when sucking cold-producing medium; Because lubricating oil uses dissolving cold-producing medium ability to descend for a long time in the automobile refrigerating air-conditioning system, and the cold-producing medium that uses of air conditioning for automobiles is impure etc., and reason will cause effectively oil return.Therefore, be necessary to take measures to improve the oil return efficient of automobile refrigerating air-conditioning system.
Summary of the invention
The objective of the invention is to overcome defective of the prior art, adopt the air-breathing injection oil return apparatus of a kind of air conditioning for automobiles, when lubricant level is too high in detecting the oil-collecting bag lubricating oil is drained into compressor crankcase, easy operating is installed simply.
For realizing above-mentioned purpose; Technical scheme of the present invention is to adopt the air-breathing injection oil return apparatus of a kind of air conditioning for automobiles; Comprise that blast pipe, compressor, air intake duct, oil exit pipe, injector, oil-collecting contract out pipe, oil-collecting bag, evaporimeter, oil-collecting bag inlet pipe; Described compressor is connected with condenser, expansion valve, evaporimeter, injector closed loop successively, and described oil bag is installed in the evaporimeter lowermost.
Described oil exit pipe connects the diversion chamber of oil-collecting bag bottom and injector.
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, and the injector cold-producing medium drains into compressor crankcase with lubricating oil when the spray cryogen, and lubricate compressors prevents that effectively compressor lacks lubricating oil, causes fault.
Beneficial effect of the present invention is:
(1) utilizes the injector on the compressor return air pipe 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 a sketch map of the present invention.
Among the figure: 1, blast pipe 2, compressor 3, air intake duct 4, oil exit pipe 5, injector 6, oil-collecting contract out pipe 7, oil-collecting bag 8, oil-collecting bag inlet pipe.
The specific embodiment
In conjunction with Fig. 1 the specific embodiment of the invention is further described:
According to technical scheme provided by the invention; The air-breathing injection oil return apparatus of a kind of air conditioning for automobiles; Comprise that blast pipe 1, compressor 2, air intake duct 3, oil exit pipe 4, injector 5, oil-collecting contract out pipe 6, oil-collecting bag 7, oil-collecting bag inlet pipe 8; Described compressor 2 is connected with condenser, expansion valve, evaporimeter, oil-collecting bag 7, injector 5 closed loop successively, and described oil-collecting bag 7 is installed in the lowermost of evaporimeter.
Described oil exit pipe 4 connects the diversion chamber of oil-collecting bag 7 bottoms and injector 5.
The course of work of the present invention is:
In the refrigeration system of air conditioning for automobiles air-conditioning, compressor 2 is connected with condenser, expansion valve, evaporimeter, oil-collecting bag 7 closed loop successively, behind use the present invention; When the air conditioning for automobiles air-conditioning system was worked, lubricating oil was compressed machine 2 and discharges, through condenser and evaporimeter; This moment, lubricating oil accumulated in the oil-collecting bag 7, during automobile air conditioner compressor 2 operations, formed low pressure at air intake duct 3; Cold-producing medium relatively high pressure from evaporimeter comes flows in injector 5, and the lubricating oil in the oil-collecting bag 7 is under the diversion chamber low-pressure suction of injector 5; Spray to the crankcase of compressor 2, lubricate compressors 2 with the cold-producing medium that is sprayed.
The advantage of present embodiment is, utilizes the injector 5 on compressor 2 air intake ducts 3 that lubricating oil 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. air-breathing injection oil return apparatus of air conditioning for automobiles; Comprise that blast pipe, compressor, air intake duct, oil exit pipe, injector, oil-collecting contract out pipe, oil-collecting bag, evaporimeter, oil-collecting bag inlet pipe; It is characterized in that: described compressor is connected with condenser, expansion valve, evaporimeter, injector closed loop successively, and described oil bag is installed in the evaporimeter lowermost.
2. the air-breathing injection oil return apparatus of a kind of air conditioning for automobiles according to claim 1 is characterized in that: described oil exit pipe connects the diversion chamber of oil-collecting bag bottom and injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103358946A CN102393102A (en) | 2011-10-31 | 2011-10-31 | Air suction and injection oil return device of vehicle air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103358946A CN102393102A (en) | 2011-10-31 | 2011-10-31 | Air suction and injection oil return device of vehicle air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102393102A true CN102393102A (en) | 2012-03-28 |
Family
ID=45860461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103358946A Pending CN102393102A (en) | 2011-10-31 | 2011-10-31 | Air suction and injection oil return device of vehicle air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102393102A (en) |
-
2011
- 2011-10-31 CN CN2011103358946A patent/CN102393102A/en active Pending
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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: 20120328 |