CN2208204Y

CN2208204Y - Recovery, regenerative and recharging device for refrigerant

Info

Publication number: CN2208204Y
Application number: CN 94239788
Authority: CN
Inventors: 吴兆琳; 蒋能照; 夏敏明; 骆志强; 李谟龙
Original assignee: Shanghai Diesel Car Repair Works; HUADONG POLYTECHNICAL UNIV
Current assignee: Shanghai Diesel Car Repair Works; HUADONG POLYTECHNICAL UNIV; South China University of Technology SCUT
Priority date: 1994-12-07
Filing date: 1994-12-07
Publication date: 1995-09-20
Anticipated expiration: 2004-12-07

Abstract

The utility model discloses a refrigerant recovering, regenerating and recharging device additionally provided with a heat recoverer which can make full use of the heat of the device to save energy and enhance thermal efficiency. The power consumption of the refrigerant recovering, regenerating and recharging device is only blow 300W, and the refrigerant recovering, regenerating and recharging device is additionally provided with a vacuum pumping and recharging pipelines, so that one device can complete the whole processes of refrigerant recovering and regenerating, vacuum pumping and recharging. Thus, the utility model can conveniently and quickly finish processing refrigerant in the air conditioner maintenance and the vacuum discharging of automobiles.

Description

Recovery, regenerative and recharging device for refrigerant

The utility model relates to the recovery, regeneration of cold-producing medium, filling device again, particularly a kind of recovery that is used for the automobile air-conditioning refrigeration agent, regeneration, filling device again.

Existing air conditioning for automobiles is mainly with CFC12(fluorine Lyons) be refrigeration working medium; but CFC12 is discharged into airborne chlorion atmospheric ozone layer there is the heavy damage effect; therefore; be the protection atmospheric ozone layer; reduce the discharge capacity of CFC12; to actively develop the research of new substitute on the one hand, then will design a kind of device that can reclaim, regenerate on the other hand CFC12.Judging from the current situation, existing new substitute-HFC134a(freon 134a) comes out, and some refrigerant-recovery, regenerating unit have also been developed, but existing refrigerant-recovery, regenerating unit generally all will give first heating to the cold-producing medium that enters retracting device with the heater of 500W power, to avoid because the cold-producing medium of band liquid damages the phenomenon of compressor valve, thereby all there are the defective that power consumption is big, the thermal efficiency is low in existing refrigerant-recovery, regenerating unit.

The purpose of this utility model is that design a kind ofly can make full use of the device self heat, the thermal efficiency is higher, the refrigerant-recovery that can reclaim, regenerate the automobile air-conditioning refrigeration agent and can vacuumize and fill again the air conditioning for automobiles unit, regeneration, filling device again, make air conditioning for automobiles in maintenance, evacuation procedure, only need on a device, just can finish quickly and easily to residual refrigerant reclaim, regenerate, vacuumize, filled overall process again.

Scheme of the present utility model is to realize like this, for improving the thermal efficiency of device, design a kind of high temperature in the compressor outlet refrigerant line that makes full use of, the refrigerant-recovery of high-pressure gas refrigerant self heat, regeneration, filling device again, promptly in the refrigerant line of device, set up a heat regenerator of forming by coil pipe and housing, the high pressure that in coil pipe, flows and discharge by compressor outlet, the high-temperature gas cold-producing medium, the cold-producing medium that need handle from air conditioning for automobiles becomes low pressure through capillary-compensated, enter this heat regenerator behind the two-phase fluid of low-temperature condition, there with the coil pipe inner high voltage, the high-temperature gas cold-producing medium carries out heat exchange, leave the heat regenerator cold-producing medium become overheated, low-pressure gas, enter compressor then, and the high pressure in the heat regenerator coil pipe, after the low-pressure low-temperature two-phase fluid heat exchange that high-temperature gas cold-producing medium and coil pipe flow outward, be condensed into highly pressurised liquid, this highly pressurised liquid entered cold heat exchanger after leaving heat regenerator, gas-liquid separator, promptly finish recovery behind the drier to air-conditioning refrigerant, regeneration.By in refrigeration pipe, setting up vacuum-pumping pipeline and filling the method for pipeline again, make device also can finish vacuumizing and filling again again to the air-conditioning unit.

The utility model is because in refrigerant-recovery, regeneration, set up a heat regenerator that can make full use of the device self heat in the refrigerant line of filling device again, thereby saved energy greatly, improved the thermal efficiency, the power consumption of device is only below 300W, and can also reduce the volume and weight of equipment, again owing to can in a device, finish recoverys, regenerate, vacuumize, fill overall process again, thereby can finish in air conditioning for automobiles maintenance, the emptying processing quickly and easily to cold-producing medium.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is refrigerant-recovery, regeneration, filling device fundamental diagram again;

Fig. 2 is refrigerant-recovery, regeneration, filling device organigram again;

Fig. 3 is refrigerant-recovery, regeneration, filling device profile schematic diagram again.

As Fig. 1, Fig. 2, shown in Figure 3.The utility model is mainly by liquid-

sighting glass

1,12, device for drying and filtering 2,11, main capillary 3, heat regenerator 4, compressor 5, oil eliminator 6, secondary capillary 7,10, cross cold heat exchanger 8, gas-liquid separator 9, steel vessel 13, inlet valve 15, suction stop valve 16, reclaim and fill stop valve 14, base 27, cabinet 28, control panel 29 grades are partly formed, wherein heat regenerator 4 is made up of housing 23 and copper coil pipe 24, and the entrance point 25 of housing is connected with main capillary 3, and the port of export 26 of housing is connected with the inlet end of compressor, the exhaust end of compressor is connected with the entrance point of coil pipe 24 through an oil eliminator 6, and the port of export of coil pipe 24 is connected with cold heat exchanger 8.In reclaiming the refrigerant line that fills stop valve 14 front ends, vavuum pump 17 is set,

vacuum valve

18,19 constitutes vacuum-pumping pipeline, be used for the air conditioning for automobiles unit being vacuumized in the air conditioning for automobiles maintenance, in reclaiming the refrigerant line that fills stop valve 14 front ends, also be provided with and fill

stop valve

20,21,22, constitute again filled pipeline, be used for the filled cold-producing medium after reclaiming, regenerating of air conditioning for automobiles unit.

Claims

1, a kind of by liquid-sighting glass (1), (12), device for drying and filtering (2), (11), compressor (5), oil eliminator (6), cross cold heat exchanger (8), gas-liquid separator (9), main capillary (3), secondary capillary (7), (10), reclaim and fill stop valve (14) and pipeline, cabinet, the refrigerant-recovery that parts such as control panel are formed, regeneration, filling device again, it is characterized in that in above-mentioned refrigerant-recovery, regeneration, also comprise a heat regenerator (4) of forming by housing (23) and coil pipe (24) again in the filling device, advancing of above-mentioned housing (23), the port of export is connected with compressor (5) with main capillary (3) respectively, low pressure flows in the housing (23), the gas of low-temperature condition, the liquid two phase refrigerant, advancing of above-mentioned coil pipe (24), the port of export is connected with the cold parallel operation of mistake (8) with oil eliminator (6) respectively, the high pressure that flows and discharged by compressor (5) in the coil pipe (24), the high-temperature gas cold-producing medium.

2, refrigerant-recovery according to claim 1, regeneration, filling device again is characterized in that reclaiming, regeneration, comprise one in the filling device by reclaiming, fill the vacuum-pumping pipeline that stop valve (4), vavuum pump (17), vacuum valve (18), (19) are formed again.

3, refrigerant-recovery according to claim 1, regeneration, filling device again, it is characterized in that reclaiming, regenerate, comprising one by reclaiming, fill stop valve (4), the filled again pipeline that filled stop valve (20), (21), (22) are formed in the filling device again.