CN103143539A - System and method for cleaning automotive air conditioner pipeline by refrigerating fluid - Google Patents
System and method for cleaning automotive air conditioner pipeline by refrigerating fluid Download PDFInfo
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- CN103143539A CN103143539A CN2013100507651A CN201310050765A CN103143539A CN 103143539 A CN103143539 A CN 103143539A CN 2013100507651 A CN2013100507651 A CN 2013100507651A CN 201310050765 A CN201310050765 A CN 201310050765A CN 103143539 A CN103143539 A CN 103143539A
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Abstract
The invention provides a system and a method for cleaning an automotive air conditioner pipeline by a refrigerating fluid. The system comprises a first pipeline, a second pipeline, a recovering and charging device and a controller, wherein one end of the first pipeline is connected with a lower-pressure charging end of an automotive air conditioner system, and the other end is connected with the recovering and charging device through a first solenoid valve; one end of the second pipeline is connected with a high-pressure charging end of the automotive air conditioner system, and the other end is connected with the recovering and charging device through a second solenoid valve; the first pipeline, the recovering and charging device and the second pipeline constitute a first passage; and the controller is connected with the first solenoid valve and the second solenoid valve as well as the recovering and charging device, and is used for controlling the operation of the first solenoid valve and the second solenoid valve as well as the recovering and charging device. The system and the method have the positive effects that not only the operation difficulty is reduced, and working time is saved, but also the purchase cost of the machine is lowered, so that a maintenance technician can simply maintain and clean an air-conditioner during the process of daily maintaining an air-conditioner by the refrigerating fluid.
Description
Technical field
The present invention relates to air conditioning for automobiles service equipment technical field, relate in particular to a kind of cold-producing medium that utilizes and carry out the system and method that pipelines of automobile air conditioner cleans.
Background technology
In existing technology, refrigerant recovery charging machine and cleaning machine for air conditioner are two kinds of equipment independently.Cleaning machine for air conditioner need to use special cleaning fluid independently automotive air-conditioning system to be cleaned, and refrigerant recovery charging machine is merely able to complete refrigerant-recovery and filled function.
The shortcoming of said apparatus is: be at first inconvenient, carrying out air conditioning for automobiles cleans and must carry out separately, need to carry out special training on operation, the general operation easier of existing professional cleaning machine is larger on the market, secondly, inconvenient and the character that must operate separately of this operation causes maintenance man-hours to rise, the namely increase of cost.In addition, present cleaning machine price is more expensive, and the price of cleaning agent is also partially expensive, and is substantially all import.Because the costliness of cost, maintenance company seldom is ready to buy separately a cleaning machine for air conditioner, if need cleaning just needs the more time of cost that all air supply rates are pulled down one by one to clean, most applications Maintenance Man in order to follow the line of least resistance not to cleaning air conditioner.
And in fact many times daily air-conditioning safeguards that can simply clean impurity with other working medium gets final product, such as the cold-producing medium of non-freon.But present refrigerant recovery charging machine can't be completed cleaning function, because it can't accomplish to form a large refrigerant circulation with automotive air-conditioning system.The arranging of its internal duct can cause the refrigerant mixed that fills into and release, do not reach the effect of cleaning.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of cold-producing medium that utilizes to carry out the system and method that pipelines of automobile air conditioner cleans, and it can reduce operation easier, saves man-hour, reduces the purchase cost of machine.
In order to address the above problem, a kind of cold-producing medium that utilizes carries out the system that pipelines of automobile air conditioner cleans, and comprises the first pipeline, the second pipeline, reclaims filling device and controller; Described the first pipeline one end fills end with the low pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the first magnetic valve, described the second pipeline one end fills end with the high pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the second magnetic valve, and described the first pipeline, recovery filling device and the second pipeline consist of cold-producing medium the first path; Described controller is connected with first, second magnetic valve and recovery filling device, the operation that is used for controlling first, second magnetic valve and reclaims filling device.
Further, described recovery filling device comprises clarifier, compressor and work tank, and described clarifier is connected with described compressor, and described compressor is connected with described work tank, described the first pipeline is connected with described clarifier, and described the second pipeline is connected with described work tank.
further, described recovery filling device further comprises vacuum extractor, oiling device, discharge equipment and fluorescer filling device, described vacuum extractor fills end with the low pressure of automotive air-conditioning system and the filled end of high pressure is communicated with, be used for automotive air-conditioning system is carried out vacuum pumping, described oiling device fills end with the high pressure of automotive air-conditioning system and is communicated with, be used for injecting lubricating oil to automotive air-conditioning system, described discharge equipment is communicated with clarifier, be used for the isolated lubricating oil of clarifier is discharged, described fluorescer filling device fills end with the high pressure of automotive air-conditioning system and is communicated with, be used for fluorescer is injected automotive air-conditioning system inside.
Further, also comprise the 3rd pipeline and the 4th pipeline, described the 3rd pipeline one end fills end with the low pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the 3rd magnetic valve, described the 4th pipeline one end fills end with the high pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the 4th magnetic valve, described the 3rd pipeline, recovery filling device and the 4th pipeline consist of cold-producing medium circulation alternate path, described controller and the 3rd, the 4th magnetic valve are connected, and are used for controlling the operation that the 3rd, the 4th magnetic valve reaches.
Further, described recovery filling device comprises clarifier, compressor and work tank, and described clarifier is connected with described compressor, and described compressor is connected with described work tank, described the 4th pipeline is connected with described clarifier, and described the 3rd pipeline is connected with described work tank.
Further, the material of described the first pipeline of manufacturing, the second pipeline is copper.
Further, also comprise the first nipple and the second nipple, when using described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning to carry out the automotive air-conditioning system cleaning, described the first nipple two ends are connected respectively to the compressor two ends of automotive air-conditioning system, make the not compressor by automotive air-conditioning system of cold-producing medium, described the second nipple two ends are connected respectively to the expansion valve two ends of automotive air-conditioning system, make cold-producing medium not by the expansion valve of automotive air-conditioning system, stop up compressor and the expansion valve of automotive air-conditioning system to prevent impurity.
Further, also comprise pressure sensor, when described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning is connected with automotive air-conditioning system, described pressure sensor is connected with automotive air-conditioning system, in order to detect automotive air-conditioning system internal refrigeration storage dosage, described pressure sensor passes to controller with signal.
The present invention also provides a kind of and uses a kind of cold-producing medium the first path that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning to carry out the method for automotive air-conditioning system internal washing, comprises the steps:
(1) controller is controlled the second magnetic valve and is started, and reclaims the high pressure of cold-producing medium by the second pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside;
(2) controller control the first magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the first pipeline through filled end of the low pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity;
(3) cold-producing medium enters to reclaim to purify in filling device through the first pipeline and reclaims;
(4) controller is controlled the second magnetic valve and is started, and reclaims the high pressure of cold-producing medium by the second pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter;
(5) repeat above-mentioned steps (2) ~ step (4), until the inner impurity of automotive air-conditioning system is removed.
The present invention also provides a kind of and uses a kind of cold-producing medium alternate path that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning to carry out the method for automotive air-conditioning system internal washing, comprises the steps:
(1) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside;
(2) controller control the 4th magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the 4th pipeline through filled end of the high pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity;
(3) cold-producing medium enters to reclaim to purify in filling device through the 4th pipeline and reclaims;
(4) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter;
(5) repeat above-mentioned steps (2) ~ step (4), until the inner impurity of automotive air-conditioning system is removed.
The invention has the advantages that, in conjunction with the common feature of refrigerant recovery charging machine and cleaning machine, be integrated into a kind of system that comprises two kinds of functions.Namely reduce operation easier, saved man-hour, reduced again the purchase cost of machine, made the Maintenance Man just can carry out the work of simple air-conditioning maintenance clean in daily air-conditioning refrigerant maintaining process.
Description of drawings
Figure 1 shows that a kind of structural representation sketch that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning of the present invention;
Figure 2 shows that and use a kind of cold-producing medium the first path that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning to carry out the method flow diagram of automotive air-conditioning system internal washing.
Reference numeral represents respectively:
1, the first pipeline; 2, the second pipeline; 3, the 3rd pipeline, 4, the 4th pipeline; 5, reclaim filling apparatus; 6, controller; 7, low pressure fills end; 8, high pressure fills end; 10, clarifier; 11, compressor; 12, work tank; 13, the first nipple; 14, the second nipple; 15, compressor of automobile air-conditioning system; 16, automotive air-conditioning system expansion valve; S1, the first magnetic valve; S2, the second magnetic valve; S3, the 3rd magnetic valve; S4, the 4th magnetic valve; P1, pressure sensor.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of specific embodiment of utilizing cold-producing medium to carry out the system and method for pipelines of automobile air conditioner cleaning provided by the invention is elaborated.
Figure 1 shows that a kind of structural representation sketch that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning of the present invention.Shown in Figure 1, a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning comprises the first pipeline 1, the second pipeline 2, reclaims filling device 5 and controller 6.
Described the first pipeline 1 one ends fill end 7 with the low pressure of automotive air-conditioning system and are connected, the other end is connected with described recovery filling device 5 by the first magnetic valve S1, described the second pipeline 2 one ends fill end 8 with the high pressure of automotive air-conditioning system and are connected, the other end is connected with described recovery filling device 5 by the second magnetic valve S2, and described the first pipeline 1, recovery filling device 5 and the second pipeline 2 consist of cold-producing medium the first paths.
Described controller 6 is connected with first, second magnetic valve S1, S2 and recovery filling device 5, the operation that is used for controlling first, second magnetic valve S1, S2 and reclaims filling device 5.
When needs clean automotive air-conditioning system inside, controller 6 is controlled the second magnetic valve S2 and is opened, cold-producing medium fills end 8 from the second pipeline 2 through the high pressure of automotive air-conditioning system and enters automotive air-conditioning system inside, circulate in the agent of automotive air-conditioning system internal refrigeration storage, low pressure through automotive air-conditioning system fills end 7 transmission to the first pipeline 1, at this moment, if automotive air-conditioning system did not carry out cleaning, the cold-producing medium of exporting from automotive air-conditioning system contains impurity.Controller 6 is controlled the first magnetic valve S1 and is opened, and to reclaiming filling device 5, cold-producing medium is cleaned in reclaiming filling device 5 cold-producing medium by the first pipeline 1 transmission, and the cold-producing medium that is cleaned can fill in automotive air-conditioning system through the second pipeline 2.In this cold-producing medium first path, the method for the cleaning automotive air-conditioning system inside that is that high-pressure side fills, low-pressure end reclaims that the present invention is a kind of utilizes that cold-producing medium carries out that system that pipelines of automobile air conditioner cleans adopts.
Further, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning also comprises the 3rd pipeline 3 and the 4th pipeline 4, described the 3rd pipeline 3 one ends fill end 7 with the low pressure of automotive air-conditioning system and are connected, the other end is connected with described recovery filling device 5 by the 3rd magnetic valve S3, described the 4th pipeline 4 one ends fill end 8 with the high pressure of automotive air-conditioning system and are connected, the other end is connected with described recovery filling device 5 by the 4th magnetic valve S4, and described the 3rd pipeline 3, recovery filling device 5 and the 4th pipeline 4 consist of the cold-producing medium alternate paths.
When cold-producing medium the first path breaks down or uses the cold-producing medium alternate path that automotive air-conditioning system is cleaned according to the actual conditions needs of automotive air-conditioning system, controller 6 is controlled the 3rd magnetic valve S3 and is opened, cold-producing medium fills end 7 from the 3rd pipeline 3 through the low pressure of automotive air-conditioning system and enters automotive air-conditioning system inside, circulate in the agent of automotive air-conditioning system internal refrigeration storage, high pressure through automotive air-conditioning system fills end 8 transmission to the 4th pipeline 4, at this moment, if automotive air-conditioning system did not carry out cleaning, the cold-producing medium of exporting from automotive air-conditioning system contains impurity.Controller 6 is controlled the 4th magnetic valve S4 and is opened, and to reclaiming filling device 5, cold-producing medium is cleaned in reclaiming filling device 5 cold-producing medium by the 4th pipeline 4 transmission, and the cold-producing medium that is cleaned can fill in automotive air-conditioning system through the 3rd pipeline 3.In this cold-producing medium alternate path, the method for the cleaning automotive air-conditioning system inside that is that low-pressure end fills, high-pressure side reclaims that the present invention is a kind of utilizes that cold-producing medium carries out that system that pipelines of automobile air conditioner cleans adopts.
Further, described recovery filling device 5 comprises clarifier 10, compressor 11 and work tank 12, described clarifier 10 is connected with described compressor 11, described compressor 11 is connected with described work tank 12, described the first pipeline 1 is connected with described clarifier 10, described the second pipeline 2 is connected with described work tank 12, and described the 4th pipeline 4 is connected with described clarifier 10, and described the 3rd pipeline 3 is connected with described work tank 12.
In the present embodiment, described clarifier 10 can be oil eliminator, and described oil eliminator is used for cold-producing medium and lubricating oil separation, thereby obtains pure cold-producing medium, realizes the purification of cold-producing medium.The cold-producing medium that transmission comes from the first pipeline is the state of gas-liquid two-phase, through after clarifier 10, described cold-producing medium becomes gaseous state, the cold-producing medium of gaseous state enters compressor 11, compressor 11 makes cold-producing medium become high-pressure gaseous from the low pressure gaseous state, cold-producing medium process heat exchange from compressor 11 transmission high-pressure gaseous out becomes liquid state, is stored in work tank 12.Described heat exchange can realize by heat exchanger, such as the heat exchanger (not indicating in accompanying drawing) that is arranged between compressor 11 and work tank 12.Further, oil eliminator (not indicating in accompanying drawing) can also be set between compressor 11 and work tank 12, described oil eliminator can be taken cold-producing medium out of from compressor lubricating oil separates with cold-producing medium, further purifies cold-producing medium.The cold-producing medium that is stored in work tank 12 is used for filling to automotive air-conditioning system through the second pipeline 2 or the 3rd pipeline 3.
Further, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning also comprises the first nipple 13 and the second nipple 14.When using described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning to carry out the automotive air-conditioning system cleaning, described the first nipple 13 two ends are connected respectively to compressor 15 two ends of automotive air-conditioning system, make cold-producing medium not by the compressor of automotive air-conditioning system, described the second nipple 14 two ends are connected respectively to expansion valve 16 two ends of automotive air-conditioning system.When cleaning, cold-producing medium directly passes through from the first nipple 13 and the second nipple 14, and cold-producing medium does not pass through the expansion valve 16 of automotive air-conditioning system, thereby prevents that the impurity in cold-producing medium from stopping up compressor 15 and the expansion valve 16 of automotive air-conditioning system.
Further, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning also comprises pressure sensor P1, when described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning is connected with automotive air-conditioning system, described pressure sensor P1 fills end 7 with the low pressure of automotive air-conditioning system and is connected, in order to detecting automotive air-conditioning system internal refrigeration storage dosage, described pressure sensor with the pressure signal transmission that detects to controller 6.
Pre-stored in controller 6 have one first pressure set points, if the force value signal that pressure sensor P1 transmission comes is less than the first pressure set points, the refrigerant amount that automotive air-conditioning system inside is described seldom or do not have, illustrate that cold-producing medium all has been retracted in work tank 12, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning stops the recovery of cold-producing medium.If the force value signal that pressure sensor P1 transmission comes is greater than the first pressure set points, the amount of carrying out cold-producing medium can reclaim, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning proceeds the recovery of cold-producing medium, until the force value signal that pressure sensor P1 transmission comes is less than the first pressure set points.
described the first force value is pre-stored in controller, in the present embodiment, described the first force value is that 0psi(is identical with atmospheric pressure), if the force value that pressure sensor P1 detects is less than or equal to the first pressure set points 0psi, cold-producing medium is described seldom or do not have, controller 6 control compressors 11 and the first magnetic valve S1 close, if the force value that pressure sensor P1 detects is higher than the first pressure set points 0psi, proceed the recovery of cold-producing medium, until force value that pressure sensor P1 detects detected less than or equal to the first pressure set points 0psi.
Further, described recovery filling device 5 further comprises vacuum extractor, oiling device, discharge equipment and fluorescer filling device (being sign in accompanying drawing), described vacuum extractor fills end with the low pressure of automotive air-conditioning system and the filled end of high pressure is communicated with by magnetic valve, be used for automotive air-conditioning system is carried out vacuum pumping, when automotive air-conditioning system need to vacuumize, controller 6 is controlled magnetic valve and is opened, and carries out vacuum pumping.Described oiling device fills end with the high pressure of automotive air-conditioning system and is communicated with by magnetic valve, be used for injecting lubricating oil to automotive air-conditioning system, but when automotive air-conditioning system need to inject lubricating oil, controller 6 was controlled magnetic valve and is opened, and injects lubricating oil in automotive air-conditioning system.Described discharge equipment is communicated with by magnetic valve with clarifier, and controller can be controlled this magnetic valve and open, and is used for the isolated lubricating oil of clarifier is discharged.The high pressure of described fluorescer filling device and automotive air-conditioning system fills end and is communicated with by magnetic valve, and controller 6 can be controlled this magnetic valve and open, and is used for fluorescer is injected automotive air-conditioning system inside, and whether the detection automotive air-conditioning system leaks.
The pipeline that the present invention is a kind of utilizes cold-producing medium to carry out being communicated with between all parts in system that pipelines of automobile air conditioner cleans is preferably copper pipe, can prevent the pipeline corrosion like this, and described cold-producing medium can be selected the fluorine-free cold-producing medium.
The present invention also provides a kind of and uses a kind of cold-producing medium the first path that utilizes cold-producing medium to carry out the system of pipelines of automobile air conditioner cleaning to carry out the method for automotive air-conditioning system internal washing, and the method is that high-pressure side fills, and low-pressure end reclaims.Shown in Figure 2, described cleaning method comprises the steps:
Step S20: controller is controlled the second magnetic valve and is started, and reclaims cold-producing medium after purifying in filling device and fills end by the second pipeline through the high pressure of automotive air-conditioning system and enter automotive air-conditioning system inside.
Cold-producing medium after described purification is stored in the work tank that reclaims filling device, and the second magnetic valve is opened, and the pure cold-producing medium in work tank is extracted, and holds to the high pressure of automotive air-conditioning system is filled through the second Pipe transfer.After pure cold-producing medium filled end and enters automotive air-conditioning system inside from the high pressure of automotive air-conditioning system, cold-producing medium was through transmitting out through filling end from the low pressure of automotive air-conditioning system after condenser, evaporimeter and first nipple of automotive air-conditioning system and the second nipple respectively.Cold-producing medium not by expansion valve and the compressor of automotive air-conditioning system, is in order to prevent that the impurity in cold-producing medium from stopping up compressor and the expansion valve of automotive air-conditioning system.
Step S21: controller control the first magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the first pipeline through filled end of the low pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity.
When controller control the first magnetic valve and reclaim compressor in filling device open after, form a pressure reduction in the part, thereby make cold-producing medium to be extracted from automotive air-conditioning system inside.
Step S22: cold-producing medium enters to reclaim to purify in filling device through the first pipeline and reclaims.
The cold-producing medium that extracts from automotive air-conditioning system is the cold-producing medium that contains impurity, through reclaiming the purification of the clarifier in filling device, becomes pure cold-producing medium free from foreign meter, and at this moment, cold-producing medium is gaseous state.The compressor that reclaims in filling device will transmit next cold-producing medium from low pressure gaseous state boil down to high-pressure gaseous from clarifier.The cold-producing medium of the high-pressure gaseous of transmitting out from compressor becomes liquid state through heat exchange, is stored in work tank.Described heat exchange can realize by heat exchanger, such as the heat exchanger that is arranged between compressor and work tank.Can also between compressor and work tank, oil eliminator be set, described oil eliminator can be taken cold-producing medium out of from compressor lubricating oil separates with cold-producing medium, further purifies cold-producing medium.The cold-producing medium that is stored in work tank 12 is used for filling to automotive air-conditioning system through the second pipeline 2 or the 3rd pipeline 3.
Step S23: controller is controlled the second magnetic valve and is started, and reclaims the high pressure of cold-producing medium by the second pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter.
Be stored in the high pressure of pure cold-producing medium by the second pipeline and automotive air-conditioning system in work tank and fill end and enter automotive air-conditioning system inside, circulate in automotive air-conditioning system inside.
Step S24: repeat above-mentioned steps S21 ~ step S23, until the inner impurity of automotive air-conditioning system is removed.
Repeat above-mentioned steps S21 ~ step S23, until the inner impurity of automotive air-conditioning system is removed, whether the inner impurity of described air conditioning for automobiles is removed and can be decided by the Users panel setup times at controller, when reaching Preset Time, system stops cleaning automatically, and pure refrigerant charging is injected automotive air-conditioning system, satisfy the demand of automotive air-conditioning system.
Further, use the cold-producing medium alternate path automotive air-conditioning system is cleaned and use cold-producing medium the first path identical to the method that automotive air-conditioning system cleans, the method is that low-pressure end fills, and high-pressure side reclaims, detail repeats no more, and concrete steps are as follows:
(1) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside;
(2) controller control the 4th magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the 4th pipeline through filled end of the high pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity;
(3) cold-producing medium enters to reclaim to purify in filling device through the 4th pipeline and reclaims;
(4) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter;
(5) repeat above-mentioned steps (2) ~ step (4), until the inner impurity of automotive air-conditioning system is removed.
Further, pre-stored in controller have one first pressure set points, if the force value signal that the pressure sensor transmission comes is less than the first pressure set points, the refrigerant amount that automotive air-conditioning system inside is described seldom or do not have, illustrate that cold-producing medium all has been retracted in work tank, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning stops the recovery of cold-producing medium.If the force value signal that the pressure sensor transmission comes is greater than the first pressure set points, carry out the amount of cold-producing medium and can carry out reclaiming clean, described a kind of system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning proceeds the reclaiming clean of cold-producing medium, until the force value signal that the pressure sensor transmission comes is less than the first pressure set points.When the automobile washing process finishes, controller can judge according to the force value of pressure sensor also whether the cold-producing medium in automotive air-conditioning system all reclaims, after whole recovery, can fill pure cold-producing medium in automotive air-conditioning system, to satisfy automotive air-conditioning system to the demand of cold-producing medium.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. one kind is utilized cold-producing medium to carry out the system that pipelines of automobile air conditioner cleans, and it is characterized in that, comprises the first pipeline, the second pipeline, reclaims filling device and controller;
Described the first pipeline one end fills end with the low pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the first magnetic valve, described the second pipeline one end fills end with the high pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the second magnetic valve, and described the first pipeline, recovery filling device and the second pipeline consist of cold-producing medium the first path;
Described controller is connected with first, second magnetic valve and recovery filling device, the operation that is used for controlling first, second magnetic valve and reclaims filling device.
2. the cold-producing medium that utilizes according to claim 1 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, described recovery filling device comprises clarifier, compressor and work tank, described clarifier is connected with described compressor, described compressor is connected with described work tank, described the first pipeline is connected with described clarifier, and described the second pipeline is connected with described work tank.
3. the cold-producing medium that utilizes according to claim 2 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, described recovery filling device further comprises vacuum extractor, oiling device, discharge equipment and fluorescer filling device, described vacuum extractor fills end with the low pressure of automotive air-conditioning system and the filled end of high pressure is communicated with, be used for automotive air-conditioning system is carried out vacuum pumping, described oiling device fills end with the high pressure of automotive air-conditioning system and is communicated with, be used for injecting lubricating oil to automotive air-conditioning system, described discharge equipment is communicated with clarifier, be used for the isolated lubricating oil of clarifier is discharged, described fluorescer filling device fills end with the high pressure of automotive air-conditioning system and is communicated with, be used for fluorescer is injected automotive air-conditioning system inside.
4. the cold-producing medium that utilizes according to claim 1 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, further comprise the 3rd pipeline and the 4th pipeline, described the 3rd pipeline one end fills end with the low pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the 3rd magnetic valve, described the 4th pipeline one end fills end with the high pressure of automotive air-conditioning system and is connected, the other end is connected with described recovery filling device by the 4th magnetic valve, described the 3rd pipeline, reclaim filling device and the 4th pipeline and consist of cold-producing medium circulation alternate path, described controller and the 3rd, the 4th magnetic valve connects, be used for controlling the 3rd, the operation that the 4th magnetic valve reaches.
5. the cold-producing medium that utilizes according to claim 4 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, described recovery filling device comprises clarifier, compressor and work tank, described clarifier is connected with described compressor, described compressor is connected with described work tank, described the 4th pipeline is connected with described clarifier, and described the 3rd pipeline is connected with described work tank.
6. the cold-producing medium that utilizes according to claim 1 carries out the system that pipelines of automobile air conditioner cleans, and it is characterized in that, the material of making described the first pipeline, the second pipeline is copper.
7. the cold-producing medium that utilizes according to claim 1 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, also comprise the first nipple and the second nipple, when using the described system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning to carry out the automotive air-conditioning system cleaning, described the first nipple two ends are connected respectively to the compressor two ends of automotive air-conditioning system, make the not compressor by automotive air-conditioning system of cold-producing medium, described the second nipple two ends are connected respectively to the expansion valve two ends of automotive air-conditioning system, make the not expansion valve by automotive air-conditioning system of cold-producing medium, to prevent that impurity from stopping up compressor and the expansion valve of automotive air-conditioning system.
8. the cold-producing medium that utilizes according to claim 1 carries out the system that pipelines of automobile air conditioner cleans, it is characterized in that, also comprise pressure sensor, when the described system that utilizes cold-producing medium to carry out the pipelines of automobile air conditioner cleaning is connected with automotive air-conditioning system, described pressure sensor is connected with automotive air-conditioning system, in order to detect automotive air-conditioning system internal refrigeration storage dosage, described pressure sensor passes to controller with signal.
9. use cold-producing medium the first path of utilizing cold-producing medium to carry out the system that pipelines of automobile air conditioner cleans carries out the method for automotive air-conditioning system internal washing, comprises the steps:
(1) controller is controlled the second magnetic valve and is started, and reclaims the high pressure of cold-producing medium by the second pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside;
(2) controller control the first magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the first pipeline through filled end of the low pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity;
(3) cold-producing medium enters to reclaim to purify in filling device through the first pipeline and reclaims;
(4) controller is controlled the second magnetic valve and is started, and reclaims the high pressure of cold-producing medium by the second pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter;
(5) repeat above-mentioned steps (2) ~ step (4), until the inner impurity of automotive air-conditioning system is removed.
10. the use cold-producing medium alternate path that utilizes cold-producing medium to carry out the system that pipelines of automobile air conditioner cleans carries out the method for automotive air-conditioning system internal washing, comprises the steps:
(1) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside;
(2) controller control the 4th magnetic valve and recovery filling device start, and cold-producing medium is extracted out from automotive air-conditioning system is inner, enters the 4th pipeline through filled end of the high pressure of automotive air-conditioning system, and at this moment, cold-producing medium contains impurity;
(3) cold-producing medium enters to reclaim to purify in filling device through the 4th pipeline and reclaims;
(4) controller is controlled the 3rd magnetic valve and is started, and reclaims the low pressure of cold-producing medium by the 3rd pipeline and automotive air-conditioning system after purifying in filling device and fills end and enter automotive air-conditioning system inside, and at this moment, cold-producing medium is free from foreign meter;
(5) repeat above-mentioned steps (2) ~ step (4), until the inner impurity of automotive air-conditioning system is removed.
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| EP3121039A1 (en) * | 2015-07-24 | 2017-01-25 | Brain Bee Holding S.p.A. | Method for transferring coolant from a loading unit to an air conditioning system |
| US10054345B2 (en) | 2015-07-28 | 2018-08-21 | Mahle Aftermarket Italy S.P.A. | Method for transferring coolant from a loading unit to an air conditioning system |
| CN109159762A (en) * | 2018-08-28 | 2019-01-08 | 曹锋 | A kind of device and method using tetrafluoroethane cleaning air conditioning for automobiles |
| CN109764578A (en) * | 2019-02-01 | 2019-05-17 | 深圳市泰路科技有限公司 | The compressor oil recovery system and method for air-conditioning system |
| CN110748782A (en) * | 2018-07-23 | 2020-02-04 | 阚有波 | Method for cleaning and replacing air conditioner compressor oil |
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