CN2682345Y - Lubricating oil mis-flowing preventing apparatus for automotive air conditioner refrigeration system - Google Patents
Lubricating oil mis-flowing preventing apparatus for automotive air conditioner refrigeration system Download PDFInfo
- Publication number
- CN2682345Y CN2682345Y CNU2003201081535U CN200320108153U CN2682345Y CN 2682345 Y CN2682345 Y CN 2682345Y CN U2003201081535 U CNU2003201081535 U CN U2003201081535U CN 200320108153 U CN200320108153 U CN 200320108153U CN 2682345 Y CN2682345 Y CN 2682345Y
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- compressor
- lubricating oil
- air conditioner
- air
- check valve
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Abstract
The utility model relates to a preventing apparatus for the miss flow of lubricating oil for a refrigeration system of an automotive air conditioner, which comprises an air conditioner compressor, a condenser, an evaporator, a throttling expansion valve or a throttling pipe, a liquid storing dehumidifier or a liquid gas separator, and a pipeline, wherein, the air conditioner compressor is provided with an air suction port and an air exhaust port, and a one-way valve is arranged on a connecting pipe between the air suction port of the air conditioner compressor and an exit of the evaporator. In the preventing apparatus for the miss flow of lubricating oil for a refrigeration system of an automotive air conditioner, the one-way valve is installed on the connecting pipe to prevent the cold media of the compressor and lubricating oil from flowing toward the evaporator. That the environment temperature steeply rises for causing the cold media inside the compressor and the lubricating oil to flow from the air suction port of the compressor to the evaporator through a pipeline in the low temperature environment is controlled, and the phenomenon of oil shortage inside the compressor is avoided.
Description
Technical field
The utility model relates to automobile air conditioning refrigerating system, and particularly a kind of automobile air conditioning refrigerating system prevents the device of lubricating oil inflow system in the compressor when static state.
Background technology
Referring to Fig. 1, the chief component of automobile air conditioning refrigerating system has compressor of air conditioner 1, condenser 2, evaporimeter 5, throttle expansion valve 4 or throttle pipe, liquid storage drier 3 or liquid-gas separator and pipeline 8,9,10,11,12 etc. at present.Number in the figure 6 is compressor of air conditioner air entries, the 7th, and the compressor of air conditioner exhaust outlet.Medium-sized, motorbus is if be placed on the low and bigger open area of day and night temperature amplitude of variation of environment temperature for a long time, and in parking period under the off-duty always specified conditions of air-conditioning refrigeration system, the lubricating oil that automobile air conditioning refrigerating system can occur in the compressor 1 is subjected to influence and the mobile situation of bringing system into that temperature alternately changes by refrigerant body or title cold-producing medium gradually, for a long time can make the state that occurs oil starvation in the compressor in the past, cause compressor under the oil starvation condition, to turn round and make the dry friction of compressor parts move, compressor dry friction operation required torque can unusually seriously increase, and causes slipping of clutch and parts to wear and tear too early.
Lubricating oil in the automobile air conditioning refrigerating system compressor, it mainly acts on when being compressor operation playing the effect of reducing friction and wearing and tearing between each relative motion parts of compressor, and the operation of compressor is prolonged service life.If unlubricated oil in the compressor will make compressor unusual premature wear can occur when operation, long-time oil starvation operation then can make wearing and tearing increase the weight of to cause compressor damage.
Analyze above-mentioned phenomenon, its reason is that condenser 2 in the automobile air conditioning refrigerating system and compressor 1 and part pipeline 8,9,10,12 are in outside the vehicle body, very easily be subjected to jumpy influence of ambient temperature and variation thereupon, and evaporimeter 5 in the air-conditioning refrigeration system and part pipeline 10,11,12 are in the vehicle body, because the heat insulation and preservation effect of vehicle body, be subjected to the ambient temperature variable effect to occur changing slowly, make condenser 2 and compressor 1 and the variations in temperature of evaporimeter 5 difference occur with temperature in the vehicle body.When environment temperature sharply descends, be in the outer compressor 1 of vehicle body, condenser 2 and part pipeline 8,9,10,12 temperature influenced by ambient temperature and sharply descend thereupon, refrigerant body temperature degree in these parts also will sharply descend thereupon, the pressure temperature influence of refrigerant body and proportional with temperature, therefore the pressure of refrigerant body sharply descends thereupon, and be in evaporimeter 5 and part pipeline 10 in the vehicle body, 11,12 influenced by the heat insulation and preservation effect of vehicle body, temperature will slowly descend, and slowly descending also will appear in same refrigerant body temperature and pressure in these parts.Thus, difference appears in refrigerant body pressure in diverse location in air-conditioning refrigeration system, causes the refrigerant body to be flowed to the low pressure place by the high pressure place, and promptly the refrigerant body in the evaporimeter 5 flows into compressor 1 and condenser 2; Otherwise, when environment temperature sharply rises, being in the temperature of vehicle body outer compressor 1, condenser 2 and part pipeline 8,9,10,12 and inherent refrigerant body appearance thereupon influenced by ambient temperature sharply rises, and evaporimeter 5 and part pipeline 10,11,12 are influenced by the heat-insulation and heat-preservation of vehicle body, the refrigerant body temperature degree of its temperature and inherence and the pressure of refrigerant body will slowly rise, the refrigerant body is subjected to the influence of diverse location pressure gap in this moment system, the interior refrigerant direction of flow compressor 1 of condenser 2, the phenomenon of inflow evaporator 5 again can occur.
Automobile air conditioning refrigerating system extensively adopts R134a refrigerant body or claims HFC134a, and the compressor of air conditioner lubricating oil of R134a refrigerant body generally adopts alcohols oil (PAG oil).Because PAG oil raises with temperature and rapid the reduction with the intermiscibility of R134a refrigerant body, because intersolubility is preferably arranged during low temperature, almost dissolve each other fully during low temperature, and, occur immiscible fully during high temperature along with the rising intermiscibility of temperature will descend gradually with R134a refrigerant body.Therefore, when sharply rising appears under the low temperature environment temperature in air-conditioning refrigeration system (temperature rises to t2 by t1), will occur refrigerant body band for above-mentioned reasons and a large amount of lubricating oil (lubricating oil with refrigerant body solubility δ 1) mutually and flow to evaporimeter 5 by compressor 1; Otherwise when sharply descending appears when higher in environment temperature (temperature drops to t2 by t3), refrigerant body band less amount of lubrication oil (lubricating oil with refrigerant body solubility δ 3) mutually and is flowed to compressor 1 by evaporimeter 5 in this moment air-conditioning refrigeration system.When thus, the refrigerant body flows under the above specified conditions with lubricating oil difference (Δ=δ 1-δ 3) occurs and cause the lubricating oil in the compressor to reduce gradually.
When above-mentioned specified conditions highly significant, for example: automobile air conditioning refrigerating system is when big (referring to middle bus or motorbus air-conditioning system) and system pipeline are longer, and refrigerant body filled in the system is more relatively; The body of a motor car effect of heat insulation is good; It is lower that automobile is placed on environment temperature for a long time, and diurnal temperature is changed significantly (temperature difference is big) and variations in temperature is rapid.This moment, the refrigerant body was subjected to influence of temperature change to occur that flow increases and flow velocity is accelerated, and can cause the lubricating oil in the compressor 1 to gather in the evaporimeter 5 in long-time thus, made the phenomenon of the unlubricated oil of appearance in the compressor.
Summary of the invention
Task of the present utility model provides the device that a kind of improved automobile air conditioning refrigerating system prevents lubricating oil mistake stream, it has solved the interior lubricating oil of compressor of existing automobile air conditioning refrigerating system and has been brought into system by the refrigerant body gradually, make the compressor inner oil shortage, thereby cause the problem of compressor parts dry friction operation.
The technical solution of the utility model is as follows;
A kind of automobile air conditioning refrigerating system prevents the device of lubricating oil mistake stream, it comprises compressor of air conditioner, condenser, evaporimeter, throttle expansion valve or throttle pipe, liquid storage drier or liquid-gas separator and pipeline, compressor of air conditioner is provided with air entry and exhaust outlet, in the air entry of described compressor of air conditioner and the connecting tube between the evaporator outlet check valve is housed.
Automobile air conditioning refrigerating system of the present utility model prevents that the device of lubricating oil mistake stream from being that a check valve is installed on pipeline, to stop compressor refrigerant body and lubricating oil to flow to evaporimeter, controlled environment temperature under the low temperature environment sharply rise make refrigerant body and lubricating oil in the compressor by the air entry of compressor through the pipeline flow-direction evaporimeter, avoided the petrol starvation that occurs in the compressor.
Description of drawings
Fig. 1 is the schematic diagram of existing automobile air conditioning refrigerating system.
Fig. 2 is the apparatus structure schematic diagram that a kind of automobile air conditioning refrigerating system of the present utility model prevents lubricating oil mistake stream.
The specific embodiment
Referring to Fig. 2, the utility model is the device that a kind of automobile air conditioning refrigerating system prevents lubricating oil mistake stream.This automobile air conditioning refrigerating system is equipped with compressor of air conditioner 1, condenser 2, evaporimeter 5, throttle expansion valve 4 or throttle pipe, liquid storage drier 3 or liquid-gas separator and air-conditioning connecting pipeline.The air-conditioning connecting pipeline comprises the pipeline 8 that is provided with between compressor of air conditioner exhaust outlet 7 and the condenser 2, the pipeline 9 that is provided with between condenser 2 and the liquid storage drier 3, the pipeline 10 that is provided with between liquid storage drier 3 and the throttle expansion valve 4, the pipeline 11 that is provided with between throttle expansion valve 4 and the evaporimeter 5, and the pipeline 12 that is provided with between evaporimeter 5 and the compressor of air conditioner air entry 6.
Compressor of air conditioner 1 is provided with air entry 6 and exhaust outlet 7.On the connecting pipeline 12 between the air entry 6 of compressor of air conditioner and evaporimeter 5 outlets, check valve 13 is housed.This check valve 13 can be the check valve of mechanical type spring reset structure, also can be the electromagnetic control type check valve.
The effect that check valve 13 is installed is to avoid air-conditioning refrigeration system to be subjected to jumpy influence of temperature to make refrigerant body and lubricating oil by compressor 1 inflow evaporator 5, and when automobile air conditioning refrigerating system runs well, the normal flow direction of refrigerant body is that compressor 1 discharge HTHP cold media gas flows into condensers 2 through exhaust outlet 7 by pipeline 8, becoming highly pressurised liquid refrigerant body after condenser 2 cooling 9 flows through liquid storage drier 3 and flows into throttle expansion valves 4 by pipeline 10 by the road, flow out and to change into cryogenic gas refrigerant body behind the low pressure liquid refrigerant body inflow evaporator 5 of throttle expansion valve 4 and flow into compressor air suction mouths 6 by pipeline 12 and check valve 13 again, the refrigerant body moves with lubricating oil and unaffected in whole circulation.
Check valve 13 in the utility model also can be installed in air entry 6 chambeies of compressor of air conditioner or air entry 6 positions, makes check valve 13 and compressor 1 form an integral body.
The effect of check valve 13 is only to allow air-conditioning refrigeration system refrigerant body and lubricating oil to flow to compressor 1 by evaporimeter 5 in the utility model, otherwise, air-conditioning refrigeration system refrigerant body is forbidden flowing to evaporimeter 5 by compressor 1 under the effect of this check valve 13, makes the normal operation of air-conditioning refrigeration system and not being affected thus.When vehicle was placed in the above-mentioned particular environment for a long time, the air-conditioning refrigeration system of vehicle does not move down for a long time to be avoided lubricating oil because of the refrigerant body band that compressor 1 appears in variation of ambient temperature and flows to evaporimeter 5.
Claims (3)
1. an automobile air conditioning refrigerating system prevents the device that the lubricating oil mistake flows, it comprises compressor of air conditioner, condenser, evaporimeter, throttle expansion valve or throttle pipe, liquid storage drier or liquid-gas separator and pipeline, compressor of air conditioner is provided with air entry and exhaust outlet, it is characterized in that, in the air entry of described compressor of air conditioner and the connecting tube between the evaporator outlet check valve is housed.
2. automobile air conditioning refrigerating system according to claim 1 prevents the device of lubricating oil mistake stream, it is characterized in that described check valve is the check valve of mechanical type spring reset structure.
3. automobile air conditioning refrigerating system according to claim 1 prevents the device of lubricating oil mistake stream, it is characterized in that described check valve is the electromagnetic control type check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201081535U CN2682345Y (en) | 2003-11-19 | 2003-11-19 | Lubricating oil mis-flowing preventing apparatus for automotive air conditioner refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201081535U CN2682345Y (en) | 2003-11-19 | 2003-11-19 | Lubricating oil mis-flowing preventing apparatus for automotive air conditioner refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2682345Y true CN2682345Y (en) | 2005-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201081535U Expired - Fee Related CN2682345Y (en) | 2003-11-19 | 2003-11-19 | Lubricating oil mis-flowing preventing apparatus for automotive air conditioner refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2682345Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749223B (en) * | 2009-10-31 | 2012-06-27 | 宁波奥克斯电气有限公司 | Method for controlling temperature of lubricating oil of compressor with low pressure chamber |
| CN102519189A (en) * | 2011-12-30 | 2012-06-27 | 东风汽车股份有限公司 | Temperature compensation device of heat pump air conditioner |
| CN104696197A (en) * | 2015-03-20 | 2015-06-10 | 马鞍山市博浪热能科技有限公司 | Check valve and compressor system with same |
| CN101910756B (en) * | 2008-01-17 | 2015-06-24 | 开利公司 | Refrigerant vapor compression system with lubricant cooler |
| CN105015305A (en) * | 2011-02-10 | 2015-11-04 | 三电有限公司 | Air conditioning device for vehicle |
-
2003
- 2003-11-19 CN CNU2003201081535U patent/CN2682345Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910756B (en) * | 2008-01-17 | 2015-06-24 | 开利公司 | Refrigerant vapor compression system with lubricant cooler |
| CN101749223B (en) * | 2009-10-31 | 2012-06-27 | 宁波奥克斯电气有限公司 | Method for controlling temperature of lubricating oil of compressor with low pressure chamber |
| CN105015305A (en) * | 2011-02-10 | 2015-11-04 | 三电有限公司 | Air conditioning device for vehicle |
| CN105015305B (en) * | 2011-02-10 | 2017-06-06 | 三电控股株式会社 | Vehicle air conditioning device |
| CN102519189A (en) * | 2011-12-30 | 2012-06-27 | 东风汽车股份有限公司 | Temperature compensation device of heat pump air conditioner |
| CN104696197A (en) * | 2015-03-20 | 2015-06-10 | 马鞍山市博浪热能科技有限公司 | Check valve and compressor system with same |
| CN104696197B (en) * | 2015-03-20 | 2017-05-17 | 马鞍山市博浪热能科技有限公司 | Compressor system with check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050302 Termination date: 20111119 |