CN1249388C

CN1249388C - Method for recovering refrigerant from air conditioner

Info

Publication number: CN1249388C
Application number: CNB2003101154812A
Authority: CN
Inventors: 沼本浩直
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2002-11-26
Filing date: 2003-11-26
Publication date: 2006-04-05
Anticipated expiration: 2023-11-26
Also published as: KR20040047668A; JP4107065B2; CN1502926A; JP2004176963A

Abstract

This air conditioner is constituted by connecting both an indoor machine and an outdoor machine by a connecting pipe, and has a two-way valve and a three-way valve in the outdoor machine as a connecting port, and includes a process for putting both the two-way valve and the three-way valve in a closing state, a process for connecting a refrigerant recovering pump to a service port part of the three-way valve and a process for connecting the refrigerant recovering pump and a refrigerant recovering vessel. The refrigerant recovering pump generates the suction-exhaust action effect by operating a check valve for suction and a check valve for exhaust by driving a piston inside a cylinder vessel. The refrigerant recovering method from the air conditioner recovers the refrigerant gas remaining inside the indoor machine and the connecting pipe into the refrigerant recovering vessel by driving the piston of the refrigerant recovering pump.

Description

By the method that reclaims refrigerant in the air conditioner

Technical field

The present invention relates in the air conditioner in being installed on dwelling house or mansion, under the situation that can not extract the refrigerant operation out, when the operation of dismantling air conditioner, reclaim the method for refrigerant, perhaps relate to, reclaim the method for refrigerant at the scene in order to repair the fault of air-conditioner outdoor unit freeze cycle part.

Background technology

Always after the industrial waste fragmentation of using disintegrating machine etc. to constitute by iron, aluminium, copper, plastics etc. and composite thereof, through separation, screening carries out recycling.

And the discarded object of air conditioner etc. because refrigerant, wet goods have been enclosed by portion, therefore, need carry out draw out operation within it at the scene, earlier with the refrigerant recovering in the off-premises station body in the refrigerating circulation system, then, brings back in the self-contained factory etc. and disintegrates.If intactly drop into disintegrating machine with it this moment, the leakage of refrigerant ejection and oil can cause environment damage, and very high danger is arranged, so, obligated recovery cold media gas and oil.For this reason, generally use the device of forcing to attract to carry out refrigerant recovering with motor compressor as refrigerant recovering power, utilization.

But, on market, exist air conditioner miscellaneous, need to dismantle for some reason barrier sometimes and compressor of air conditioner of being installed that can not turn round fully or the air conditioner of having stopped power supply.Just need not use power supply also can fully reclaim the development technique of the operation of refrigerant this moment.And present situation is, now in the market when repairing off-premises station freeze cycle Parts Breakdown and need reclaim refrigerant, have only the refrigerant recovering device that uses motor compressor, and this refrigerant recovering device is big and heavy, and price is also very expensive, therefore, in general almost can not popularize, and have to airborne release.

Summary of the invention

The invention provides by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the middle of the air conditioner that constitutes by tube connector connection indoor set and off-premises station, on off-premises station, be provided with two-port valve and triple valve as connector.As the refrigerant recovering method, comprising: the operation that two-port valve and triple valve is switched to simultaneously closure state; The operation that the working hole of triple valve is connected with the refrigerant recovering pump; The operation that refrigerant recovering pump and refrigerant recovering are connected with container then.By driving the piston in the cylindrical container, the refrigerant recovering pump makes air-breathing check (non-return) valve and the work of exhaust check (non-return) valve and produces the effect of suction effect, thereby the refrigerant recovering that will remain in the inner and tube connector inside of indoor set is in the refrigerant recovering container.

Description of drawings

Fig. 1 is the primary structure schematic diagram of the air conditioner of one embodiment of the invention;

Fig. 2 is the primary structure of device of refrigerant recovering method used in the embodiment of the present invention 1 and the schematic diagram of annexation;

Fig. 3 is the cross-sectional view of air-breathing check (non-return) valve used in the embodiment of the present invention 1;

Fig. 4 is the cross-sectional view of oil eliminator used in the embodiment of the present invention 1;

Fig. 5 is the primary structure of refrigerant recovering method used in the embodiment of the present invention 2 and the schematic diagram of annexation;

Fig. 6 is the primary structure of refrigerant recovering method used in the embodiment of the present invention 3 and the schematic diagram of annexation;

Fig. 7 is the primary structure of refrigerant recovering method used in the embodiment of the present invention 4 and the schematic diagram of annexation;

Fig. 8 is the primary structure of refrigerant recovering method used in the embodiment of the present invention 5 and the schematic diagram of annexation.

The specific embodiment

Describe embodiments of the present invention with reference to the accompanying drawings in detail.

(embodiment 1)

Fig. 1 is the primary structure schematic diagram of air conditioner.

Embodiment 1 is used for explanation hypothesis air conditioner an off-premises station and an indoor set, uses the refrigerant R22 of loading 750g, is loaded in that compressor (not shown) in the off-premises station breaks down and situation about can not extract out.The major part of air conditioner is made of indoor set 1,

tube connector

2,3 and off-premises station 4, is covered with tubing 5 on the tube connector 2,3.Particularly, the auxiliary tube (not shown) of being drawn by indoor set 1 is connected with

tube connector

2,3 by enlarging.

Fig. 2 is the primary structure and the annexation schematic diagram of the device of refrigerant recovering method.On off-premises station 4, be provided with two-port valve 6 and triple valve 7, be connected with indoor set 1 through tube connector 2,3.Connecting the communicating valve 8 of the working hole of the triple valve 7 that is connected off-premises station 4 by pressure pipe 10 1 ends, opposite side is connecting the air-breathing check (non-return) valve 95 of refrigerant recovering pump 9.Be provided with needle valve 11, oil eliminator 12 and low-pressure meter 13 at the pipeline that leads to pressure pipe 10 midway.The exhaust check (non-return) valve 96 of refrigerant recovering pump 9 is connecting refrigerant recovering container 15 through pressure pipe 14.Refrigerant recovering is withstand voltage with the design of container 15 to be 30kg/cm ², internal capacity is 500cm ³, make by stainless steel, be provided with valve 151 at the refrigerant introducing port.In embodiment 1, the refrigerant loading is 750g, therefore needs to reclaim the refrigerant that remains in indoor set 1 inside and

tube connector

2,3 inside, at this moment, because the refrigerant recovering amount roughly is no more than 200g, so use internal capacity 500cm ³Refrigerant recovering container 15.Refrigerant recovering is pumped into the following negative pressure state of 50torr with refrigerant recovering pump 9 in advance with container 15, and valve-off 151 then.

Refrigerant recovering pump 9 is provided with piston 92 in the inside of hydrostatic column 91, and be separated into two chambers, piston 92 is connecting driving shaft 93, driving shaft 93 connects hydrostatic column 91, and be connected with outer handle 94, there not being a Room side of driving shaft 93, be provided with air-breathing check (non-return) valve 95 and exhaust check (non-return) valve 96 at piston 92 lower dead point positions.Be provided with neoprene system O shape circle 97 on piston 92, this design can prevent that refrigerant from leaking from the peripheral part of piston 92.

Fig. 3 is the cross-sectional view of air-breathing check (non-return) valve 95.Air-breathing check (non-return) valve 95 is processed grooving at two places of copper pipe 951 with roller, and is fixing brass system valve seat 952 at the slot part 951a place that processes.Compression helical spring 953 is connecting the resin plate 954 of PPS system, elastic force by compression helical spring makes the resin plate 954 of PPS system contact with brass system valve seat 955, the face of valve seat 955 and resin plate 954 contacts and makes the pipeline obturation, this has just formed check valve structure, makes cold media gas to flow along the direction of arrow.Compression helical spring 953 uses the stage clip of SUS304 system coefficient of elasticity as 0.4N/mm.Brass system valve seat 955 is fixed by the slot part 951b of processing, and a side is tapered in the upstream of valve seat 955.The used exhaust check (non-return) valve 96 and the structure of air-breathing check (non-return) valve 95 are about the same, so omit its explanation at this, coefficient of elasticity is 0.6N/mm.

Used oil separator 12 in this explanation embodiment 1.Fig. 4 is the cross-sectional view of oil eliminator.Oil eliminator 12 is provided with inner ring 122 cylindraceous in the inside of cylindric rustless steel container 121, what inner ring 122 used is 32 purpose stainless (steel) wires, is divided into three spacer segments and is disposing the 32 order stainless (steel) wires 123,124 and 125 that are discoideus equally.Form the structure that cold media gas is entered, discharged by outlet 127 by introducing port 126.Thus, make the compressor oil and the stainless (steel) wire collision that are accompanied by cold media gas, and only oil is separated out.

The following describes the operating sequence that reclaims refrigerant.

At first, the refrigerant recovering that valve 151 is in closure state is connected with refrigerant recovering pump 9 with container 15, simultaneously pressure pipe 10 also is connected with refrigerant recovering pump 9.Close the two-port valve 6 and the triple valve 7 of off-premises station 4 by rotating die nut then.After this, the needle valve 11 that will be in closure state on the working hole of triple valve 7 is connected to communicating valve 8.At this moment, for communicating valve 8, the form of inwardly having pressed when having used the spool jut closure that is installed on the triple valve 7.Thus, pressure pipe 10 is connected state with tube connector inside, and cold media gas reaches needle valve 11 and stops.The needle valve 11 that will be in closure state is then opened a little, remain in the air-breathing check (non-return) valve 95 suction cylindrical container 91 of refrigerant by refrigerant recovering pump 9 of indoor set 1 inside and

tube connector

2,3 inside, import to the valve 151 of refrigerant recovering straight through pressure pipe 14 with container 15 porch by exhaust check (non-return) valve 96.After this, refrigerant recovering is in opening with the valve 151 of container 15.Make cold media gas further shift to refrigerant recovering thus and use container 15 inside.Along with needle valve 11 is slowly opened, just will remain in indoor set 1 cold media gas inner and

tube connector

2,3 inside and import refrigerant recovering with in the container 15.When needle valve 11 was slowly opened, at this moment, the compressor oil that remains in indoor set 1 inside and

tube connector

2,3 inside was separated cold media gas by the oil eliminator 12 that is configured in midway with oil, thereby can prevent that oil from entering refrigerant recovering pump 9 one sides.When cold media gas was shifted to refrigerant recovering pump 9 one sides straight, handle 94 to motion, therefore was preferably the position that in advance handle 94 is configured in piston 92 top dead-centres to the Party A, and needle valve 11 is opened.After needle valve 11 full open, one side is listened attentively to the sound of cold media gas, simultaneously, waits for that through a period of time the action of cold media gas stops.After this, if reaching all with container 15 and indoor set inside and tube connector inside, refrigerant recovering presses, flowing of cold media gas will stop, at this moment, with the handle 94 of refrigerant recovering pump 9 to the Party B to driving, the cold media gas of cylindrical container 91 inside is just discharged by exhaust check (non-return) valve 96, and refrigerant is imported refrigerant recovering with in the container 15.Handle 94 again to the Party A when driving, the inner and residual refrigerant in tube connector inside of indoor set is inhaled into the inside of cylindrical container 91 again.Handle is operated and so forth, and final indoor set 1 refrigerant recovering inner and

tube connector

2,3 inside that just forcibly will remain in are used in the container 15 to refrigerant recovering.And can read pressure state to hold residual cold media gas amount by low-pressure meter 13.The pressure of refrigerant R22 cold media gas in the time of 20 ℃ is 9.28kgf/cm ²If the boost capability of refrigerant recovering pump 9 is 10kgf/cm ², just refrigerant can be realized fully reclaiming with liquefaction in the container 15 in refrigerant recovering.If the operator utilizes handle 94 direct controls, the load that acts on the handle 94 will be quite big, and therefore, the compression area that is preferably piston 92 is at 4cm ²Below.When low-pressure meter 13 becomes negative pressure by malleation, refrigerant recovering is closed with the valve 151 of container 15, unload communicating valve 8 by the working hole of triple valve 7, finish refrigerant recovering.

(embodiment 2)

Embodiment 2 is used for illustrating that the hypothesis air conditioner has an off-premises station and an indoor set, uses the refrigerant R407C of refrigerant loading 800g, the situation when Utilities Electric Co. stops power supply.Fig. 5 is the primary structure and the annexation schematic diagram of device of the refrigerant recovering method of embodiment 2.On off-premises station 16, be provided with two-port valve 17 and triple valve 18, be connected with the indoor set (not shown) through tube connector 19,20.The working hole of the triple valve 18 of off-premises station 16 is connecting communicating valve 21, is connecting the air-breathing check (non-return) valve 225 of refrigerant recovering pump 22 by pressure pipe 23.Be provided with needle valve 24, oil eliminator 25 and low-pressure meter 26 midway what lead to pressure pipe 23.Exhaust check (non-return) valve 226 1 sides of refrigerant recovering pump 22 are connecting refrigerant recovering container 28 through pressure pipe 27.Refrigerant recovering is withstand voltage with the design of container 28 to be 30kg/cm ², internal capacity is 700cm ³, make by stainless steel, be provided with valve 281 at the refrigerant introducing port.Be filled with synthetic zeolite 282 in refrigerant recovering container 28 inside, with shutter 283 location.Used synthetic zeolite is the 13X type, and particle diameter is 1/12inch, altogether 600g.Refrigerant recovering is extracted into the following negative pressure state of 50torr and valve-off 281 with refrigerant recovering pump 22 with container 28 in advance.Used oil separator 25 is identical with embodiment 1.

Refrigerant recovering pump 22 is divided into two chambers by the piston 222 that is disposed in cylindrical container 221, piston 222 is connecting driving shaft 223, driving shaft 223 connects cylindrical container 221, and be connected with outer handle 224, upper dead center position at the piston 222 of a Room side that disposes driving shaft 223 is provided with air-breathing check (non-return) valve 225, is provided with exhaust check (non-return) valve 226 at the lower dead point position of the piston 222 of an other Room side that does not have driving shaft 223.Also be provided with check (non-return) valve 227 on piston 222, this structure can prevent that cold media gas from never flowing in the chamber of configuration driven axle 223 1 sides in the chamber of the other side of configuration driven axle.Periphery at piston 222 is equipped with hydrogenated nitrile-butadiene rubber (HNBR) system O shape circle 228, and its design can prevent that cold media gas from leaking from the peripheral part of piston 222.And the through hole that driving shaft 223 and cylindrical container 221 are joined also is provided with HNBR system O shape circle (not shown), and this design can prevent that cold media gas from being leaked by driving shaft 223 places.Illustrated roughly the same in the structure of air-breathing check (non-return) valve 225, exhaust check (non-return) valve 226 and check (non-return) valve 227 and the embodiment 1, omit its explanation at this.

The following describes the operating sequence that reclaims refrigerant.

At first, the refrigerant recovering that valve 281 is in closure state is connected with refrigerant recovering pump 22 with container 28, simultaneously pressure pipe 23 also is connected with refrigerant recovering pump 22.Close the two-port valve 17 on off-premises station 16 bodies and the valve of triple valve 18 by rotating die nut then.After this, the needle valve 24 that will be in closure state on the working hole of triple valve 18 is connected to communicating valve 21.At this moment, for communicating valve 21, use the spool jut inside form of pressing in closure that is installed on the triple valve 18.Thus, make pressure pipe 23 and tube connector inside be connected state, cold media gas reaches needle valve 24 and stops.Open the needle valve 24 that is in closure state then a little, make and remain in indoor set 1 cold media gas inner and

tube connector

19,20 inside are entered cylindrical container 221 by the air-breathing check (non-return) valve 225 of refrigerant recovering pump 22 first side, shift to the second side of cylindrical container 221 through being installed in check (non-return) valve 227 on the piston 222, import to the valve 281 of refrigerant recovering by exhaust check (non-return) valve 226 straight through pressure pipe 27 again with container 28 porch.After this, make refrigerant recovering be in opening with the valve 281 of container 28.Make cold media gas inner mobile with container 28 thus, be adsorbed on the synthetic zeolite 282 that is filled in inside with the physical absorption method to refrigerant recovering.Along with needle valve 24 is slowly opened, just will remain in indoor set 1 cold media gas inner and

tube connector

19,20 inside and import refrigerant recovering with in the container 28.At this moment, the compressor oil that remains in indoor set inside and tube connector inside makes cold media gas separate with oil by the oil eliminator 25 that is configured in midway in the process that needle valve 24 is slowly opened, thereby can prevent that oil from entering refrigerant recovering pump 22 1 sides.When cold media gas was shifted to refrigerant recovering pump 22 1 sides straight, if the circulating resistance of check (non-return) valve 227 is big, handle 224 was just shifted to the below.If the circulating resistance of check (non-return) valve 227 is little, first side room and second side room just immediately form isobaric.Therefore can think that if use refrigerant recovering pump 22 as shown in Embodiment 2, what the operator made a mistake may be just very little.After final needle valve 24 is all opened, after a period of time, refrigerant recovering container 28 and indoor set 1 inner and tube connector 19, the 20 inner equipressures that form.After this, when estimating that cold media gas stops to flow, with the handle 224 of refrigerant recovering pump 22 to the Party B to driving, the cold media gas of cylindrical container 221 inside is just discharged by exhaust check (non-return) valve 226, simultaneously, suck the cold media gas that remains in indoor set 1 inside and

tube connector

19,20 inside by air-breathing check (non-return) valve 225.The cold media gas of discharging is recovered to refrigerant recovering with in the container 28.By with the handle 224 of refrigerant recovering pump 22 to the Party A to moving, the check (non-return) valve 227 of cold media gas through being installed on the piston 222 of cylindrical container 221 inside moved to the second side room by the first side room.And by handle 224 to the Party B to moving, with compressing refrigerant gas, simultaneously, be recovered to refrigerant recovering with in the container 28 through exhaust check (non-return) valve 226.By the reciprocal operation of this handle, just will remain in indoor set 1 cold media gas inner and

tube connector

19,20 inside and forcibly be recovered to refrigerant recovering with in the container 28.And can read pressure state by low-pressure meter 26, to hold the cold media gas residual quantity.The pressure maximum of refrigerant R407C cold media gas in the time of 20 ℃ is 10.56kgf/cm ²If the boost capability of refrigerant recovering pump is 15kgf/cm ², just refrigerant fully can be reclaimed.But when boost capability is 10kgf/cm ²The time also adopt the refrigerant recovering pump 22 of structure shown in the embodiment 2, then two Room of cylindrical container do not have pressure reduction, therefore, can reach the level that refrigerant fully reclaims under this state.When low-pressure meter 26 becomes negative pressure by malleation, refrigerant recovering is closed with the valve 281 of container 28, unload communicating valve 21 by the working hole of triple valve 18, finish refrigerant recovering.

(embodiment 3)

Embodiment 3 is used for illustrating that the hypothesis air conditioner has an off-premises station and an indoor set, uses the refrigerant R410A of refrigerant loading 800g, hinders and idle situation for some reason at compressor.Fig. 6 is the primary structure and the annexation schematic diagram of the device of refrigerant recovering method.On off-premises station 29, be provided with two-port valve 30 and triple valve 31, be connected with the indoor set (not shown) through tube connector 32,33.The working hole of the triple valve 31 of off-premises station 29 is connecting communicating valve 34, is connecting air-breathing check (non-return) valve one side of refrigerant recovering pump 35 by pressure pipe 36.Be provided with needle valve 37, oil eliminator 38 and low-pressure meter 39 midway what lead to pressure pipe 36.Exhaust check (non-return) valve one side of refrigerant recovering pump 35 is connecting refrigerant recovering container 41 through pressure pipe 40.The design of refrigerant recovering container 41 is withstand voltage to be 45kg/cm ², internal capacity is 700cm ³, make by stainless steel, be provided with valve 411 at the refrigerant introducing port.Be filled with synthetic zeolite 412 in refrigerant recovering container 41 inside, with shutter 413 location.Used synthetic zeolite is the 13X type, and particle diameter is 1/12inch, altogether 600g.Refrigerant recovering is extracted into the following negative pressure state of 50torr with refrigerant recovering pump 35 with container 41 in advance, and valve-off 411 then.Used oil separator 38 is identical with embodiment 1.

Refrigerant recovering pump 35 is divided into two chambers by the piston 352 of configuration in cylindrical container 351, piston 352 is connecting driving shaft 353, driving shaft 353 connects cylindrical container 351, and be connected with outer handle 354, upper dead center position at a Room side piston 352 of configuration driven axle 353 is provided with air-breathing check (non-return) valve 355a and exhaust check (non-return) valve 356a, and is provided with air-breathing check (non-return) valve 355b and exhaust check (non-return) valve 356b at the lower dead point position of the piston 352 of an other Room side that does not have driving shaft 353.The path of being drawn by air-breathing check (non-return)

valve

355a, 355b is all on the way connected by pressure pipe 36, and is also on the way connected by pressure pipe 40 by the path that exhaust check (non-return) valve 356a, 356b draw.The periphery of piston 352 is equipped with HNBR system O shape circle 357, and this design can prevent that cold media gas from leaking from the peripheral part of piston 352.And the through hole that driving shaft 353 and cylindrical container 351 are joined also is provided with HNBR system O shape circle (not shown), and this design can prevent that cold media gas from being leaked by driving shaft 353 places.Illustrated roughly the same in the structure of air-breathing check (non-return)

valve

355a, 355b and exhaust check (non-return) valve 356a, 356b and the embodiment 1, omit its explanation at this.

The following describes the operating sequence that reclaims refrigerant.

At first, the refrigerant recovering that valve 411 is in closure state is connected with refrigerant recovering pump 35 with container 41, simultaneously pressure pipe 36 also is connected with refrigerant recovering pump 35.Close the two-port valve 30 on the off-premises station 29 and the valve of triple valve 31 by rotating die nut then.After this, the needle valve 37 that will be in closure state on the working hole of triple valve 31 is connected to communicating valve 34.At this moment, for communicating valve 34, use the spool jut inside form of pressing in closure that is installed on the triple valve 31.Thus, make pressure pipe 36 and

tube connector

32,33 inside be connected state, cold media gas reaches needle valve 37 and stops.Open the needle valve 37 that is in closure state then a little, make the cold media gas that remains in indoor set inside and

tube connector

32,33 inside through first and second both sides that the air-breathing check (non-return) valve 355a and the 355b of refrigerant recovering pump 35 enter cylindrical container 351, import to the valve 411 of refrigerant recovering by exhaust check (non-return) valve 356a, 356b straight through pressure pipe 40 again with container 41 porch.After this, refrigerant recovering is in opening with the valve 411 of container 41.Thus, make cold media gas, be adsorbed on the synthetic zeolite 282 that is filled in inside with the physical absorption method to refrigerant recovering container 41 inner moving.Along with needle valve 37 is slowly opened, just will remain in indoor set cold media gas inner and

tube connector

32,33 inside and import refrigerant recovering with in the container 41.At this moment, the compressor oil that remains in indoor set inside and

tube connector

32,33 inside makes cold media gas separate with oil by the oil eliminator 38 that is configured in midway in the processes that needle valve 37 is slowly opened, thereby can prevent that oil from entering refrigerant recovering pump 35 1 sides.Because when cold media gas is shifted to refrigerant recovering pump 35 1 sides straight, be to import to first and second both sides of cylindrical container 351, therefore, handle 354 is almost motionless.Therefore can think that if use refrigerant recovering pump 35 as shown in Embodiment 3, what the operator made a mistake may be just very little.Finally after needle valve 37 was all opened, after waiting for a period of time, refrigerant recovering was used container 41 and indoor set is inner and tube connector 32, the 33 inner equipressures that form.After this, estimate that cold media gas stops to flow constantly, with the handle 354 of refrigerant recovering pump 35 to the Party B to driving, the cold media gas of cylindrical container 351 inside is just discharged by exhaust check (non-return) valve 356b, simultaneously, will remain in the first side that indoor set cold media gas inner and

tube connector

32,33 inside are drawn into cylindrical container 351 inside by air-breathing check (non-return) valve 355a.The cold media gas of being discharged by exhaust check (non-return) valve 356b is recovered to refrigerant recovering with in the container 41.By with the handle 354 of refrigerant recovering pump 35 to the Party A to moving, the cold media gas of cylindrical container 351 inner first sides is discharged through exhaust check (non-return) valve 356a, and is recovered to refrigerant recovering with in the container 41.Simultaneously, will remain in the second side that indoor set cold media gas inner and

tube connector

32,33 inside are drawn into cylindrical container 351 inside through air-breathing check (non-return) valve 355b.By the reciprocal operation of this handle, no matter where handle 354 drives to, can both forcibly be recovered in the refrigerant recovering usefulness container 41 remaining in indoor set cold media gas inner and

tube connector

32,33 inside.And can read pressure state by low-pressure meter 39, to hold the cold media gas residual quantity.The pressure maximum of refrigerant R410A cold media gas in the time of 20 ℃ is 14.71kgf/cm ²If the boost capability of refrigerant recovering pump 35 is 15kgf/cm ², just refrigerant fully can be reclaimed.But when boost capability is 10kgf/cm ²The time also adopt the refrigerant recovering pump 39 of structure shown in the embodiment 3, then two Room of cylindrical container do not have pressure reduction, therefore, can reach the level that refrigerant fully reclaims under this state.When low-pressure meter 39 becomes negative pressure by malleation, refrigerant recovering is closed with the valve 411 of container 41, unload communicating valve 34 by the working hole of triple valve 31, finish refrigerant recovering.

In

embodiment

2,3, when carrying out refrigerant recovering, be filled with 13X type synthetic zeolite in the refrigerant recovering container, like this, even also have the adsorption capacity with respect to the about 25wt% of synthetic zeolite weight under condition of normal pressure, so certain degree ground has alleviated the operation burden of refrigerant recovering with recovery refrigerant in the container.

(embodiment 4)

Embodiment 4 is used for explanation hypothesis air conditioner an off-premises station and an indoor set, uses the refrigerant R22 of refrigerant loading 750g, hinders for some reason and does not work at compressor, needs renewal part at the scene and reclaims the situation of refrigerant.Fig. 7 is the primary structure and the annexation schematic diagram of the device of refrigerant recovering method.On off-premises station 42, be provided with two-port valve 43 and triple valve 44, be connected with the indoor set (not shown) through tube connector 45,46.The working hole of the triple valve 44 of off-premises station 42 is connecting communicating valve 47, is connecting the air-breathing check (non-return) valve of refrigerant recovering pump 48 by pressure pipe 49.Be provided with needle valve 50, oil eliminator 51 and low-pressure meter 52 midway what lead to pressure pipe 49.Exhaust check (non-return) valve one side of refrigerant recovering pump 48 is connecting refrigerant recovering container 54 through pressure pipe 53.Refrigerant recovering is withstand voltage with the design of container 54 to be 30kg/cm ², internal capacity is 1200cm ³, make by stainless steel, be provided with valve 541 at the refrigerant introducing port.Utilize refrigerant recovering pump 48 to be extracted into negative pressure state below the 50torr and valve-off 541 in refrigerant recovering with container 54 in advance.Used oil separator 51 is identical with embodiment 1.

The structure of refrigerant recovering pump 48 is similar to used pump structure in the embodiment 1.Be divided into two chambers by the piston 482 that is disposed in cylindrical container 481, piston 482 is connecting driving shaft 483, and the coupling part is installed with the thread spindle 484 with ball bearing.Driving shaft 483 connects cylindrical container 481, gives prominence to outside.And be provided with air-breathing check (non-return) valve 485 and exhaust check (non-return) valve 486 at the lower dead point position of the piston 482 of an other Room side that does not have driving shaft 483.Piston 482 is provided with HNBR system O shape circle 487, and this structure can prevent to produce the cold media gas leakage at the outer peripheral portion of piston 482.When driving shaft 483 moves along the vertical direction and cylindrical container 481 contacted parts be provided with elastomer 488.Illustrated roughly the same in the structure of air-breathing check (non-return) valve 485 and exhaust check (non-return) valve 486 and the embodiment 1, omit its explanation at this.

Refrigerant recovering pump 48 is by being bolted on the substrate 55, and supporting pillar 56 is also by being bolted on the substrate 55.The driving shaft 483 of refrigerant recovering pump 48 is connected by handlebar 57 with supporting pillar 56.The end of handlebar 57 is linked to each other with driving shaft 483 by the thread spindle 571 as first connecting portion, and the pars intermedia of handlebar 57 is linked to each other with supporting pillar 56 by the thread spindle 572 as second connecting portion.Thread spindle 571 is provided with ball bearing, also is provided with ball bearing on the thread spindle 572.Handle portion 573 becomes the actual afterburning position of operator.Such as, when the distance between thread spindle 571 and the thread spindle 572 was 1, to this, the distance between thread spindle 572 and the handle portion 573 was 3.Applied force is a fulcrum with thread spindle 572 on handle portion 573, and it is that to be applied to power on the handle portion 573 be to be applied to 1/3 of power on the direct driving shaft 483 to application point that this structure makes with thread spindle 571.Handle portion 573 moves along the vertical direction, and to this, thread spindle 571 to being support motion with thread spindle 572, makes the driving shaft 483 of refrigerant recovering pump 48 move along the vertical direction in Handle axis.At this moment, because thread spindle 571 and thread spindle 572 is fixing, the direction of action of driving shaft 483 departs from the direction vertical with substrate 55 in the horizontal slightly.In order to tackle this lateral run-out, be provided with elastomer 488 at driving shaft 483 and cylindrical container 481 contacted parts, also piston 482 and driving shaft 483 are coupled together simultaneously by thread spindle 484.When the operator carries out that handle portion made progress the operation of push-and-pull, will increase load as the refrigerant work done during compression.

The following describes the operating sequence that reclaims refrigerant.

At first, the refrigerant recovering that valve 541 is in closure state is connected with refrigerant recovering pump 48 with container 54, simultaneously pressure pipe 49 also is connected with refrigerant recovering pump 48.Make the two-port valve 43 of off-premises station 42 and the valve of triple valve 44 be held open state then, connect valve 47, make needle valve 50 be in closure state at the working hole of triple valve 44.At this moment, for communicating valve 47, use the spool jut inside form of pressing in closure that is installed on the triple valve 44.Thus, make pressure pipe 49 and tube connector inside be connected state, make cold media gas reach needle valve 50 and stop.Open the needle valve 50 that is in closure state then a little, make the cold media gas that remains in off-premises station 42, indoor set inside and

tube connector

45,46 inside enter the second side of cylindrical container 481, import to the valve 541 of refrigerant recovering straight through pressure pipe 53 with container 54 porch by exhaust check (non-return) valve 486 by the air-breathing check (non-return) valve 485 of refrigerant recovering pump 48.After this, make refrigerant recovering be in opening with the valve 541 of container 54.Thus, make cold media gas inner mobile with container 54 again to refrigerant recovering.Along with needle valve 50 is slowly opened, the cold media gas that just will remain in off-premises station 42, indoor set inside and

tube connector

45,46 inside imports refrigerant recovering with in the container 54.At this moment, when needle valve 50 is slowly opened, by the oil eliminator 51 that is configured in midway cold media gas is separated by off-premises station 42, indoor set inside and tube connector 45, the 46 inner compressor oils that import in the pressure pipe 49 with oil, just can prevent that oil from entering refrigerant recovering pump 48 1 sides.When cold media gas during straight to refrigerant recovering pump 48 1 side shiftings, because handle portion 57 moves downward, therefore be preferably handle portion 57 is moved downward, when being configured in upper dead center position, just opens in piston 482 needle valve 50.Behind needle valve 50 complete openings, after waiting for a period of time, cold media gas just stops to flow.At this moment, handle portion 573 is moved upward, and piston 482 is to Party B's motion, and the cold media gas of cylindrical container 481 inside is just discharged by exhaust check (non-return) valve 486, imports in the refrigerant recovering container 54.And, the cold media gas that remains in off-premises station 42, indoor set inside and

tube connector

45,46 inside is sucked cylindrical vessel 481 inside downwards by handle portion 573 is moved.By the operation up and down of this handle portion more than 573 time, the cold media gas that remains in off-premises station 42 inside, indoor set inside and

tube connector

45,46 inside the most at last forcibly is recovered to refrigerant recovering with in the container 54.Can read pressure state by low-pressure meter 52, to hold the cold media gas residual quantity.In embodiment 4 and since be dissolved in the compressor oil cold media gas slowly gasification be discharged into the refrigerant recovering pump, so when the pressure oscillation value that has on the low-pressure meter 52 to a certain degree, just need give much attention to this change.

If adopt refrigerant recovering pump, under the situation of its principle of applying in a flexible way, even adopt hand also can reach 30kgf/cm as present embodiment 4 structures ², and also have the above boost capability of this level.

(embodiment 5)

Embodiment 5 is used for illustrating that the hypothesis air conditioner has an off-premises station and an indoor set, use the refrigerant R410A of refrigerant loading 800g, hinder for some reason and do not work when carrying compressor (not shown) in off-premises station, need renewal part at the scene and reclaim the situation of refrigerant.Fig. 8 is the primary structure and the annexation schematic diagram of the device of refrigerant recovering method.On off-premises station 58, be provided with two-port valve 59 and triple valve 60, be connected with the indoor set (not shown) through tube connector 61,62.The working hole of the triple valve 60 of off-premises station 58 is connecting communicating valve 63, is connecting the air-breathing check (non-return) valve 644 of refrigerant recovering pump 64 by pressure pipe 65.Be provided with needle valve 66, oil eliminator 67 and low-pressure meter 68 midway what lead to pressure pipe 65.Exhaust check (non-return) valve 645 1 sides of refrigerant recovering pump 64 are connecting refrigerant recovering container 70 through pressure pipe 69.Refrigerant recovering is withstand voltage with the design of container 70 to be 45kg/cm ², internal capacity is 1200cm ³, make by stainless steel, be provided with valve 701 at the refrigerant introducing port.Refrigerant recovering utilizes refrigerant recovering pump 64 to be extracted into the following negative pressure state of 50torr and valve-off 701 with container 70 in advance.Used oil separator 67 is identical with embodiment 1.

Used structure is roughly the same in refrigerant recovering pump 64 and the embodiment 2 shown in Figure 5, is divided into two chambers in cylindrical container 641 inside by the piston 642 that is disposed, and piston 642 is connecting driving shaft 643, and driving shaft 643 connects cylindrical container 641, gives prominence to outside.The upper dead center position of the piston 632 in being provided with driving shaft 643 1 side rooms is provided with air-breathing check (non-return) valve 644.And the lower dead point position of the piston 642 in driving shaft 643 1 side rooms are not installed is provided with exhaust check (non-return) valve 645.Also be provided with check (non-return) valve 646 on piston 642, this structure makes and prevents that cold media gas is provided with in the chamber of driving shaft 643 1 sides by flowing in the chamber that driving shaft 643 1 sides are not installed.Outer peripheral portion at piston 642 is provided with HNBR system O shape circle 647, and this structure can prevent to produce the cold media gas leakage at the outer peripheral portion of piston 642.Driving shaft 643 and cylindrical container 641 contacted through hole places also are provided with HNBR system O shape circle (not shown), and this structure can prevent that cold media gas from being leaked by driving shaft 643 places.Illustrated roughly the same in air-breathing check (non-return) valve 644, exhaust check (non-return) valve 645 and check (non-return) valve 646 structures and the embodiment 2, omit its explanation at this.

Refrigerant recovering pump 64 is by being bolted on the substrate 71, and supporting pillar 72 is also by being bolted on the substrate 71.The driving shaft 643 of refrigerant recovering pump 64 is connected by handlebar 73 with supporting pillar 72.The end of handlebar 73 is linked to each other with supporting pillar 72 by the thread spindle 731 as second connecting portion, and the pars intermedia of handlebar 73 is linked to each other with driving shaft 643 by the thread spindle 732 as first connecting portion.Thread spindle 732 is provided with and can be provided with the direction of rotation needle bearing on thread spindle 731 at the rectilinear direction needle bearing of handle axial action.Handle portion 733 becomes the actual afterburning position of operator.Such as, when the distance between thread spindle 731 and the thread spindle 732 was 1, to this, the distance between thread spindle 732 and the handle portion 733 was 3.Applied force is a fulcrum with thread spindle 731 on handle portion 733, makes with thread spindle 732 to be that application point is applied to the power on the handle portion 733, and the ratio with 1/4 is applied directly on the driving shaft 643.Because being provided with can be along the needle bearing of rectilinear direction in axial sliding of handle, so handle portion 733 moves along the vertical direction, to this, thread spindle 732 is a support motion with thread spindle 731 axially handle, thereby makes the moving up and down direction and can keep the direction vertical with substrate 71 of driving shaft 643 of refrigerant recovering pump 64.When the operator carries out that handle portion made progress the operation of push-and-pull, will increase load as the refrigerant work done during compression.

The following describes the operating sequence that reclaims refrigerant.

At first, the refrigerant recovering that valve 701 is in closure state is connected with refrigerant recovering pump 64 with container 70, simultaneously pressure pipe 65 also is connected with refrigerant recovering pump 64.Make the two-port valve 59 of off-premises station 58 and the valve of triple valve 60 be held open state then, connect valve 63, make needle valve 66 be in closure state at the working hole of triple valve 60.At this moment, for communicating valve 63, use the spool jut inside form of pressing in closure that is installed on the triple valve 60.Thus, make pressure pipe 65 and tube connector inside be connected state, make cold media gas reach needle valve 66 and stop.Open the needle valve 66 that is in closure state then a little, make the cold media gas that remains in off-premises station 58, indoor set inside and

tube connector

61,62 inside enter the first side of cylindrical container 641 by the air-breathing check (non-return) valve 644 of refrigerant recovering pump 64, shift to the second side of cylindrical container 641 through the check (non-return) valve 646 that is installed on the piston 642 again, and import to the valve 701 of refrigerant recovering container 70 porch by exhaust check (non-return) valve 645 through pressure pipe 69 straight.After this, make refrigerant recovering be in opening with the valve 701 of container 70.Thus, make cold media gas inner mobile with container 70 again to refrigerant recovering.Along with needle valve 66 is slowly opened, the cold media gas that just will remain in off-premises station 58, indoor set inside and

tube connector

61,62 inside imports refrigerant recovering with in the container 70.At this moment, when needle valve 66 is slowly opened, by the oil eliminator 67 that is configured in midway cold media gas is separated by off-premises station, indoor set inside and tube connector 61, the 62 inner compressor oils that import in the pressure pipe 65 with oil, just can prevent that oil from entering refrigerant recovering pump 64 1 sides.When cold media gas during straight to refrigerant recovering pump 64 1 side shiftings, if the circulating resistance of check (non-return) valve 646 is little, then first side room and second side room form pressure balance at once.Therefore, if use refrigerant recovering pump 64 as shown in Embodiment 5 just can prevent the steep maneuver of handlebar 73.Finally behind needle valve 66 complete openings, because refrigerant recovering container 70 and off-premises station 58 inside, indoor set inside and

tube connector

61,62 inner realizations are all pressed, estimate that cold media gas stops to flow constantly, the handle portion 733 of refrigerant recovering pump 64 is driven downwards, piston 642 also to the Party B to driving, the cold media gas of cylindrical container 641 inside is just discharged by exhaust check (non-return) valve 645, and the cold media gas of discharge is recovered to refrigerant recovering with in the container 70.Meanwhile, remain in the cold media gas of off-premises station 58 inside, indoor set inside and

tube connector

61,62 inside by air-breathing check (non-return) valve 644 suctions.When handle portion 733 moves upward, piston 642 also to the Party A to motion, the check (non-return) valve 646 of cold media gas through being located on the piston 642 in cylindrical container 641 inside moves by side to second chamber one side by first chamber one.And since handle portion 733 move downwards, on one side cold media gas be compressed, Yi Bian be recovered in the refrigerant recovering container 70 through exhaust check (non-return) valve 645.By the operation up and down of this handle portion more than 733 time, the cold media gas that remains in off-premises station 58 inside, indoor set inside and

tube connector

61,62 inside the most at last forcibly is recovered to refrigerant recovering with in the container 70.Can read pressure state by low-pressure meter 68, to hold the cold media gas residual quantity.Under the situation of present embodiment 5 and since be dissolved in the compressor oil cold media gas slowly gasification be discharged into refrigerant recovering pump 64, so when the pressure oscillation value that has on the low-pressure meter 68 to a certain degree, just need give much attention to this change.If adopt refrigerant recovering pump, under the situation of its principle of applying in a flexible way, even adopt hand also can reach 30kgf/cm as present embodiment 5 structures ², it also has the above boost capability of this level.

In the present embodiment, the O shape of refrigerant recovering pump circle adopts neoprene under the situation of refrigerant R22, adopts HNBR rubber under the situation of refrigerant R407C and R410A.Need to consider its cold-resistant matchmaker's property, oil resistivity for O shape circle, also will select only hardness simultaneously.

In the present embodiment, on the thread spindle of the driving shaft that connects the refrigerant recovering pump, use the rectilinear direction needle bearing, on the thread spindle that connects supporting pillar, used the direction of rotation needle bearing.As use under the situation of needle bearing the preferred connecting portion that is arranged on the handlebar middle part that adopts in configuration rectilinear direction on the thread spindle.Be not limited to this and can be used for structure of the present invention.Be preferably the structure that to utilize lever principle to make that this fulcrum or application point part can be moved smoothly, and a side of coupling part can be slided to the handlebar direction.Therefore, be preferably the structure of rolling bearing or the structure of sliding bearing.As rolling bearing structure, can use the mode of ball bearing, and, can use the material of polytetrafluoroethylene (PTFE) system, graphite system as the structure of sliding bearing.In order to improve the greasy property of rolling bearing structure or sliding bearing structure, can use lubricating grease.

In the present embodiment, the air-breathing check (non-return) valve of refrigerant recovering pump, exhaust check (non-return) valve etc. all use the check (non-return) valve that utilizes the compression spring force, are not limited thereto but can be used for structure of the present invention.Because the exhaust check (non-return) valve directly contacts with refrigerant, therefore require valve mechanism to have enough intensity.And do not have under the situation of adjustable pressures such as ball valve at air-breathing check (non-return) valve, valve mechanism has requirement of strength equally.But under the situation of air-breathing check (non-return) valve,, can reduce the rate of recovery of refrigerant if the elastic force of compression spring is strong excessively.Also promptly, because according to the pressure reduction switch valve of air-breathing check (non-return) valve, cross when strong at the elastic force of compression spring, the time point of switch valve in the refrigerant recovering operation, the operation of refrigerant recovering can stop.Therefore, can think that the coefficient of elasticity that is used for the compression spring of air-breathing check (non-return) valve is preferably about 0.3～0.6N/mm.And the exhaust check (non-return) valve should be bigger, is preferably about 0.4～0.8N/mm.

In the present embodiment, carry out refrigerant recovering for the air conditioner of filling refrigerant R22, R407C and R410A, but purposes of the present invention is not limited thereto.Because refrigerant R410A compares with refrigerant R22, be approximately its 1.6 times at the refrigerant pressure of same temperature conditions, therefore need carry out the design of boosting of corresponding refrigerant recovering device therewith.If as the refrigerant recovering pump structure of enforcement mode 1, a chamber of cylindrical container is in atmospheric pressure state, and is relative therewith, and another chamber is the structure of compression refrigerant gas work done, therefore is attended by sizable compression load; And if according to the refrigerant recovering pump structure of embodiment 2 or embodiment 3, because two chambers of cylindrical container are balanced pressure dependences, so can reclaim the operation of refrigerant with smaller load at the initial period of residual refrigerant liquid.But when carrying out the refrigerant recovering operation, owing to only form gas coolant, thereby strengthened load to the compressing refrigerant gas merit.Thereby, the rate of recovery of the refrigerant recovering when also containing refrigerant by the refrigerant recovering of the air conditioner that can not extract out or in off-premises station inside in order to improve, the boost capability of refrigerant recovering pump is necessary for 10～30kg/cm ²Because during manual operation is limited, so the sectional area of the designed cylindrical container that is used for the refrigerant recovering pump must be little.And when filling the bulk synthetic zeolite of fine pore in the refrigerant recovering container, can be adsorbed onto the degree that reaches 30wt% on the synthetic zeolite by physisorption, therefore, the flexible Application this point also can alleviate the operation burden.Therefore be preferably the zeolite that the carbon dioxide adsorption that has in the carbon dioxide that 25 ℃ time dividing potential drop is 500mmHg reaches the physical characteristic more than the 20wt% as synthetic zeolite.

If utilize the refrigerant recovering pump installation of leverage, utilize lever principle can reduce the peak load of attended operation.But too special as fruit structure, the shape of refrigerant recovering pump installation will increase, and will be just very heavy when Handling device.Therefore, when utilizing lever principle,, during the formation of impetus, be preferably the maximum operational load of 1/2～1/5 degree that is reduced at fulcrum, application point.

Owing to the objective of the invention is to reclaim refrigerant in the air conditioner by electrification not, utilize the effect of the lever as embodiment of the present invention as shown in, in the refrigerant recovering container physical absorption effect of filling synthetic zeolite etc. to any cold media gas, improving a little aspect the refrigerant recovering apparatus structure, just can reduce operator's burden significantly.

According to the present invention, use the refrigerant recovering pump will remain in indoor set cold media gas inner and tube connector inside and forcibly extract out and be discharged in the refrigerant recovering container and carry out refrigerant recovering.Because the simple structure that this moment, used refrigerant recovering pump was made up of piston cylinder shape container and check (non-return) valve needn't be used equipment such as power supply, therefore only just can carry out the refrigerant recovering operation with operator self strength.

According to the present invention, the cold media gas that uses the refrigerant recovering pump will remain in off-premises station inside, indoor set inside and tube connector inside is forcibly extracted and is discharged into the refrigerant recovering internal tank out and carries out refrigerant recovering.Because the simple structure that this moment, used refrigerant recovering pump was made up of piston cylinder shape container and check (non-return) valve needn't be used equipment such as power supply.Therefore only just can carry out the refrigerant recovering operation with operator self strength.

According to the present invention, when making the pistons work of refrigerant recovering pump by the power on the driving shaft of acting on, discharge the operation compression work done of cold media gas, therefore need sizable load, and necessary peak load when utilizing lever principle that bleeding can be reduced, thereby improved the manual operation performance significantly.

According to the present invention, owing in the refrigerant recovering container, filled the bulk synthetic zeolite of fine pore, make the refrigerant that synthetic zeolite itself approximately can physical absorption 20～30wt%, thereby by the refrigerant recovering pump with when the cold media gas mechanical compress is in the refrigerant recovering container, the operational load of human body when also reduce reclaiming significantly.

According to the present invention, in path, be provided with oil eliminator through air-breathing check (non-return) valve and working hole communicating valve, remain in that indoor set is inner fully to be separated with the compressor oil of tube connector inside and make, thereby can cold media gas be imported in the refrigerant recovering pump.

According to the present invention, connect refrigerant recovering pump driving shaft as application point at an end that with the supporting pillar is the handlebar of fulcrum, when the operator in an other end reinforcing, feasible when making the piston action of refrigerant recovering pump because of the power on the driving shaft of acting on, by utilizing leverage can reduce the essential load of compressing refrigerant gas work done, essential peak load when reducing bleeding, thus the operability of manpower improved significantly.

According to the present invention, with an end of handlebar as with the fulcrum of supporting pillar, the mid portion of handlebar is connected as application point with refrigerant recovering pump driving shaft, when the operator in an other end reinforcing, the feasible piston that makes the refrigerant recovering pump because of the power on the driving shaft of acting on is when moving, be arranged between fulcrum and the impetus by load, application point the compressing refrigerant gas merit of necessity, effectively utilize leverage, and essential peak load when reducing bleeding, thereby improve the operability of manpower significantly.

According to the present invention,, only utilize a chamber just can produce the effect of suction effect to cold media gas for the cylindrical container of refrigerant recovering pump.

According to the present invention, for the cylindrical container of refrigerant recovering pump, by check (non-return) valve is set on piston, the pressure reduction of two chambers of the cylindrical container inside that is separated is very little, therefore, can reduce the load of operator's work done.

According to the present invention, cylindrical container for the refrigerant recovering pump, by two indoor air-breathing check (non-return) valve and exhaust check (non-return) valves of being provided with respectively in the inside that is separated, when two directions move about the piston edge, compression refrigerant gas and arranging on the one hand to the outside, can carry out cold media gas is imported the operation of cylindrical container inside simultaneously on the other hand, therefore greatly improve operability.And the pressure reduction between two chambers, the inside of the cylindrical container that is separated is very little, therefore can reduce operator's live load.

According to the present invention, if the physical characteristic of adsorbance more than 20wt% of the carbon dioxide when synthetic zeolite has 25 ℃ partial pressure of carbon dioxide 500mmHg because fine pore is very big, therefore can absorb rapidly and effectively.

Claims

1. the method by recovery refrigerant in the air conditioner reclaims refrigerant from the air conditioner that indoor set and off-premises station by the tube connector connection constitute, and it is characterized in that having two-port valve and triple valve as connector in described off-premises station, comprising:

(1) described two-port valve and described triple valve are switched to simultaneously the operation of closure state;

(2) operation that the working hole of described triple valve is connected with the refrigerant recovering pump;

(3) operation that described refrigerant recovering pump and refrigerant recovering are connected with container; With

(4) in the inside of described cylindrical container piston, air-breathing check (non-return) valve and exhaust check (non-return) valve are set at least,, make described air-breathing check (non-return) valve and the work of described exhaust check (non-return) valve and produce the operation of the effect of suction effect by driving described piston,

In described cylindrical container, by air-breathingly being configured in the upper dead center position of described piston, described exhaust is configured in the lower dead point position of described piston with check (non-return) valve, and in described piston, disposes check (non-return) valve with check (non-return) valve with described,

Thereby the refrigerant recovering that will remain in described indoor set inside and described tube connector inside is in the refrigerant recovering container.

2. the method by recovery refrigerant in the air conditioner reclaims refrigerant from the air conditioner that indoor set and off-premises station by the tube connector connection constitute, and it is characterized in that having two-port valve and triple valve as connector in described off-premises station, comprising:

(1) described two-port valve and described triple valve are switched to simultaneously the operation of opening;

(3) operation that described refrigerant recovering pump is connected with the refrigerant recovering container; With

Thereby the refrigerant recovering that will remain in described off-premises station inside, described indoor set inside and described tube connector inside is in the refrigerant recovering container.

3. as claimed in claim 1 or 2 by the method that reclaims refrigerant in the air conditioner, it is characterized in that in the operation of described driven plunger, described piston is connected with driving shaft, described driving shaft connects described cylindrical container and is projected into the outside, and in an end reinforcing of described driving shaft.

4. as claimed in claim 1 or 2 by the method that reclaims refrigerant in the air conditioner, it is characterized in that in the operation of described driven plunger, described piston is connected with driving shaft, described driving shaft connects described cylindrical container and is projected into the outside, utilizes leverage afterburning on described driving shaft.

5. as claimed in claim 1 or 2ly it is characterized in that with in described refrigerant recovering pump and the operation that the refrigerant recovering container is connected, described refrigerant recovering internal tank is filled with synthetic zeolite by the method that reclaims refrigerant in the air conditioner.

6. as claimed in claim 1 or 2 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, with in the working hole of described triple valve and the operation that the refrigerant recovering pump is connected, the working hole and the refrigerant recovering pump institute that connect described triple valve are provided with oil eliminator by the road.

7. as claimed in claim 3 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, described cylindrical container inside is divided into two chambers by described piston, is provided with described air-breathing check (non-return) valve and described exhaust check (non-return) valve in the Room side that described driving shaft is not set.

Described in claim 3 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, described cylindrical container inside is divided into two chambers by described piston, described air-breathing check (non-return) valve is installed in a Room side that is provided with described driving shaft, described exhaust check (non-return) valve is installed in another chamber side that does not have described driving shaft, and check (non-return) valve is set on described piston, this structure can prevent refrigerant by a Room effluent that is provided with described driving shaft to the other Room side that described driving shaft is not installed.

9. as claimed in claim 3 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, described cylindrical container inside is divided into two chambers by described piston, in each chamber, be provided with described air-breathing check (non-return) valve and described exhaust check (non-return) valve, the pipeline that is located at the described exhaust check (non-return) valve side in each chamber is connected with outside, and simultaneously, the pipeline that is located at the described exhaust check (non-return) valve side in each chamber also is connected with the outside.

10. as claimed in claim 4 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of utilizing described leverage driven plunger, described driving shaft is connected with the end that the perforation cylindrical container is projected into outside handlebar by first connecting portion, described handlebar is connected with supporting pillar by second connecting portion, with described second connecting portion is fulcrum, is application point with described first connecting portion, and is impetus with an other end of described handlebar.

11. it is as claimed in claim 4 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of utilizing described leverage driven plunger, described driving shaft is projected into outside handlebar by first connecting portion with the perforation cylindrical container and is connected, one end of described handlebar connects supporting pillar by second coupling part, with described second connecting portion is fulcrum, is application point with described first connecting portion, and is impetus with an other end of described handlebar.

12. it is as claimed in claim 4 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, described piston is divided into two chambers with described cylindrical container inside, and described air-breathing check (non-return) valve and described exhaust check (non-return) valve are set in the chamber that described driving shaft one side is not installed.

13. it is as claimed in claim 4 by the method that reclaims refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, the inside of described cylindrical container is divided into two chambers by described piston, in the chamber that is provided with described driving shaft one side, be provided with described air-breathing check (non-return) valve, in not being installed, an other side room of described driving shaft is provided with described exhaust check (non-return) valve, on described piston, be provided with check (non-return) valve, this structure can prevent refrigerant by a Room effluent that is provided with described driving shaft to the other Room side that described driving shaft is not installed.

14. the method described in claim 4 by recovery refrigerant in the air conditioner, it is characterized in that, in the operation of described driven plunger, described cylindrical container inside is divided into two chambers by described piston, in each chamber, be provided with described air-breathing check (non-return) valve and described exhaust check (non-return) valve, the pipeline that is located at the described air-breathing check (non-return) valve side in each chamber is connected with outside, and simultaneously, the pipeline that is located at the described exhaust check (non-return) valve side in each chamber also is connected with the outside.

15. as claimed in claim 5ly it is characterized in that under the partial pressure of carbon dioxide of 25 ℃ and 500mmHg, the carbon dioxide adsorption of described synthetic zeolite is more than 20wt% by the method that reclaims refrigerant in the air conditioner.