JP2016200357A - Fluid recovery/regeneration/filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid recovery/regeneration/filling device which recovers several kinds of refrigerants by itself and fills a vehicle air conditioner with the refrigerant while maintaining proper refrigerant performance.SOLUTION: A fluid recovery/regeneration/filling device includes: a first recovery tank Ta for storing a first refrigerant recovered from a vehicle air conditioner; and a second recovery tank Tb for storing a second refrigerant recovered from another vehicle air conditioner different from the vehicle air conditioner.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fluid recovery / regeneration and filling apparatus.

  2. Description of the Related Art Conventionally, there has been a fluid collection / regeneration / filling device that collects and regenerates refrigerant from a vehicle air conditioner and fills the vehicle air conditioner with refrigerant collected in a tank (see, for example, Patent Document 1).

JP 2012-117719 A

  Currently, the adoption and diffusion of a new refrigerant (for example, HFO-1234yf) having a lower global warming potential (GWP) and toxicity than the refrigerant (for example, HFC-134a) that is widely used is being promoted. Therefore, the conventional fluid recovery / regeneration / filling apparatus performs, for example, the refrigerant recovery / regeneration for vehicles using HFO-1234yf after performing the refrigerant recovery / regeneration / filling operation for vehicles using HFC-134a. When the filling operation is performed, the HFC-134a of the previous operation remaining in the tank and the HFO-1234yf of the subsequent operation are mixed, and the vehicle air conditioner is filled with a mixture of two types of refrigerants. There was a problem that performance could not be obtained. In addition, even if a plurality of fluid collection / regeneration / filling devices are used according to the type of refrigerant, there is a possibility that the combination of the type of refrigerant and the fluid recovery / regeneration / filling device to be used may be mistaken, or a plurality of units are owned. For this reason, there is a problem that maintenance management takes time and cost.

  Accordingly, an object of the present invention is to provide a fluid recovery / regeneration / filling apparatus that can collect a plurality of types of refrigerants by one unit and that can be charged while maintaining appropriate refrigerant performance.

In order to achieve the above object, a fluid recovery / regeneration / filling device according to the present invention includes a first recovery tank for storing a first refrigerant recovered from a vehicle air conditioner, and another vehicle air conditioner different from the vehicle air conditioner. And a second recovery tank for storing the recovered second refrigerant.
In addition, after the first refrigerant is pumped to the first recovery tank through the liquefier by the compressor, the first refrigerant remaining in the liquefier is sucked out by the compressor and pumped to the first recovery tank. The second refrigerant is pumped by the compressor to the second recovery tank via the liquefier, and then the second refrigerant remaining in the liquefier is sucked out by the compressor. This is configured to be pumped to the second recovery tank.

A first high-pressure hose having a first high-pressure joint member detachably attached to the high-pressure service valve of the vehicle air conditioner, and a first low-pressure joint member detachably attached to the low-pressure service valve of the vehicle air conditioner. A first hose unit including a first low pressure hose, a second high pressure hose having a second high pressure joint member detachably attached to a high pressure service valve of the other vehicle air conditioner, and the other vehicle air conditioner. A second hose unit including a second low pressure hose having a second low pressure joint member detachably attached to the low pressure service valve.
In addition, an apparatus main body including the first recovery tank and the second recovery tank is provided, and the first hose unit or the second hose unit is selected and connected to the apparatus main body. is there.

  Alternatively, the vehicle includes a first high-pressure joint member detachably attached to the high-pressure service valve of the vehicle air conditioner, and a first low-pressure joint member attachable to the low-pressure service valve of the vehicle air conditioner. A high-pressure hose having a second high-pressure joint member detachably attached to the high-pressure service valve of the apparatus and having a base end connected to the apparatus main body side and a low-pressure service valve of the other vehicle air conditioner A low-pressure hose having a low-pressure joint member and a base end connected to the apparatus main body, and the first high-pressure joint member is detachably attached to the second high-pressure joint member of the high-pressure hose. The first low-pressure joint member is detachably attached to the second low-pressure joint member of the low-pressure hose.

  According to the present invention, it is possible to prevent different types of refrigerants from being mixed and maintain (hold) appropriate refrigerant performance. One unit can handle multiple types of refrigerant recovery work. There is no need to own a plurality of fluid collection / regeneration / filling devices according to the type of refrigerant, and maintenance work and costs can be reduced.

It is a principal part sectional front view showing one embodiment of the present invention. It is a piping circuit diagram for demonstrating a 1st refrigerant | coolant collection | recovery reproduction | regeneration process. It is a piping circuit diagram for demonstrating a 1st oil filling process. It is a piping circuit diagram for demonstrating a 1st reproduction | regeneration liquefied refrigerant filling process. It is a piping circuit diagram for demonstrating a 1st hose cleaning process. It is a piping circuit diagram for demonstrating a 1st oil supply part washing | cleaning process. It is a piping circuit diagram for demonstrating a 1st collection | recovery reproduction | regeneration piping part circulation washing process. It is a piping circuit diagram for demonstrating a 1st residual refrigerant | coolant collection process. It is a piping circuit diagram for demonstrating a 2nd refrigerant | coolant collection | recovery reproduction | regeneration process. It is a piping circuit diagram for demonstrating a 2nd reproduction | regeneration liquefied refrigerant filling process. It is a piping circuit diagram for demonstrating a 2nd hose cleaning process. It is a piping circuit diagram for demonstrating a 2nd oil supply part washing | cleaning process. It is a piping circuit diagram for demonstrating the 2nd collection | recovery reproduction | regeneration piping part circulation cleaning process. It is a piping circuit diagram for demonstrating a 2nd residual refrigerant | coolant collection process. It is a piping circuit diagram for demonstrating the other example of a communication connection means. It is a principal part enlarged view which shows other embodiment, Comprising: (a) is a principal part enlarged view which shows a 2nd refrigerant | coolant work preparation state, (b) is a principal part enlarged view which shows a 1st refrigerant | coolant work preparation state. is there.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIGS. 1 and 2, the fluid recovery / regeneration / filling apparatus according to the present invention is a first high-pressure joint member 10A that is detachable from a high-pressure service valve Sa of a vehicle air conditioner S that is pre-filled with a first refrigerant. A first high-pressure hose 2A having a first low-pressure joint member 20A detachably attached to a low-pressure service valve Sb of the vehicle air conditioner S, and a vehicle air-conditioner S. And a first recovery tank Ta for storing the first refrigerant recovered from.

Further, as shown in FIG. 1 and FIG. 9, a second high-pressure joint member 10B that is detachably attached to a high-pressure service valve Sa ′ of another vehicle air conditioner S ′ different from the vehicle air conditioner S is provided on the distal end side. 2 Hose 1B for high pressure, 2nd low pressure hose 2B which has 2nd low pressure joint member 20B which can be attached or detached to low pressure service valve Sb 'of said another vehicle air conditioner S' on the front end side, and said another vehicle air conditioning And a second recovery tank Tb for storing the second refrigerant recovered from the device S ′.
The types of the first refrigerant and the second refrigerant are different. That is, another vehicle air conditioner S ′ is pre-filled with a second refrigerant of a type different from the first refrigerant. For example, the first refrigerant is HFC-134a, and the second refrigerant is HFO-1234yf.

The apparatus main body 9 including the first recovery tank Ta and the second recovery tank Tb has a high pressure connection portion 91 and a low pressure connection portion 92.
The first and second high-pressure hoses 1A and 1B (hereinafter sometimes referred to as the high-pressure hose 1) have first and second high-pressure connecting members 11A that are detachable from the high-pressure connecting portion 91 on the base end side. , 11B.
The high-pressure connecting portion 91 and the first and second high-pressure connecting members 11A and 11B are formed of a plug-in type male and female joint unit, also called a one-touch joint or a quick joint. The first and second high-pressure connecting members 11A and 11B are male and female other side joints (male and male other couplers).

The first and second low-pressure hoses 2A and 2B (hereinafter sometimes referred to as the low-pressure hose 2) are detachable from the low-pressure connecting portion 92 at the base end side. , 21B.
The low-pressure connecting portion 92 and the first and second low-pressure connecting members 21A and 21B are composed of plug-in type male and female joint units, also called one-touch joints and quick joints. The first and second low-pressure connecting members 21A and 21B are male and female other side joints (male and male other couplers).

That is, the first hose unit Ya including the first high pressure hose 1A and the first low pressure hose 2A, and the second hose unit Yb including the second high pressure hose 1B and the second low pressure hose 2B The main body 9 is detachably provided to the high pressure connection portion 91 and the low pressure connection portion 92.
The first hose unit Ya or the second hose unit Yb is selected and connected to the high pressure connecting portion 91 and the low pressure connecting portion 92 of the apparatus main body 9 so as to communicate with the piping circuit section 80 on the apparatus main body 9 side. It is composed.

  Further, the apparatus main body 9 includes a first connection port 96 to which the first oil can J1 filled with the first oil can be connected and a second oil can J2 filled with the second oil to which the first oil can J2 can be connected. 2 connection port portion 97, refrigerant can connection port portion 98 to which refrigerant can K filled with replenishing refrigerant can be connected, base end side of high pressure hose 1 (high pressure connection portion 91), and low pressure hose Piping circuit portion 80 connected to the base end side (low-pressure connecting portion 92) of 2 and each solenoid valve (open / close valve) V of the piping circuit portion 80, compressor C, vacuum pump P, etc. A control unit (not shown) such as a CPU or a sequencer for controlling the controlled member, and an operation unit (not shown) such as a button or a touch panel for sending an instruction signal to the control unit are provided.

  As shown in FIG. 2, the piping circuit portion 80 includes a high pressure connecting portion 91 (base end side of the high pressure hose 1) and a first piping portion 81 to which one end side is connected, and a low pressure connecting portion 92 (low pressure hose). 2 base end side) and one end side are connected to the second piping part 82, and the other end side of the first piping part 81 and the second piping part 82 is connected to the other end side so that the one end side can communicate with the joining connecting part Qa. The recovery part connected to the piping part 83 and the other end side of the merging piping part 83 via the connection check valve Ba and connected to the inflow side of the first recovery tank Ta and the second recovery tank Tb. A first oil supply pipe having a pipe circuit part 84 and a first connection port part 96 to which the first oil can J1 can be connected at the distal end side and having a proximal end side connected to the merging pipe part 83 at the first merging part Q1. Portion 86 and second connecting port portion 97 to which second oil can J2 can be connected are provided at the distal end side, and the proximal end side is joined at second joining portion Q2. A refrigerant replenishment piping unit having a second oil supply piping unit 87 connected to the piping unit 83 and a refrigerant can connection port portion 98 to which the refrigerant can K can be connected on the distal end side and a proximal end side connected to the merging piping unit 83 88.

A high pressure side electromagnetic valve (first electromagnetic valve) V1 is interposed in the first piping part 81, and a low pressure side electromagnetic valve (second electromagnetic valve) V2 is interposed in the second piping part 82.
The first oil supply piping section 86 is provided with a first oil solenoid valve (sixth solenoid valve) V6, and the second oil supply pipe section 87 is connected with a second oil solenoid valve (seventh solenoid valve). V7 is interposed, and a refrigerant replenishing solenoid valve (eighth electromagnetic valve) V8 is interposed in the refrigerant replenishing piping section 88.

Further, in the merging pipe portion 83, a merging solenoid valve (third solenoid valve) V3 is interposed between the first merging portion Q1 and the second merging portion Q2.
Further, in the merging pipe portion 83, the first merging portion Q1 is disposed on one end side with respect to the second merging portion Q2. The refrigerant replenishment piping part 88 is joined to the joining piping part 83 between the second joining part Q2 and the connection check valve Ba.

  As shown in FIG. 2, the recovery / regeneration piping circuit unit 84 separates the first refrigerant mixed with oil (refrigerating machine oil) recovered from the vehicle air conditioner S into oil and first refrigerant, and the first separated oil is separated. While being a piping circuit for liquefying the refrigerant and sending it to the first recovery tank Ta, as shown in FIG. 9, the second refrigerant mixed with oil (refrigerating machine oil) recovered from another vehicle air conditioner S ′, It is a piping circuit for separating into oil and the 2nd refrigerant, liquefying the 2nd refrigerant from which oil was separated, and sending it to the 2nd recovery tank Tb.

  In FIG. 2, the recovery / regeneration piping circuit section 84 includes an oil separator 84a whose inlet side is connected to the other end side of the merging piping section 83 via a connecting check valve Ba, and a dry separator circuit on the outlet side of the oil separator 84a. The compressor C to which the suction side is connected via the filter 84b, the discharge side of the compressor C, the safety valve (not shown), and the compressor solenoid valve (16th solenoid valve) V16 are connected and disposed in the oil separator 84a. Liquefaction disposed between the heat exchanger (condenser) 84d and the heat exchanger 84d disposed outside the oil separator 84a and the inflow side of the recovery tanks (first recovery tank Ta and second recovery tank Tb). (Fin condenser) 84e, a liquefaction outlet side of liquefier 84e and an inflow side of first recovery tank Ta, and a first tank in which a first regeneration / recovery solenoid valve (9th solenoid valve) V9 is interposed Supply piping 84f is connected to the liquefying outlet side of the liquefier 84e and the inflow side of the second recovery tank Tb, and the second tank supply piping section 84g in which the second regeneration / recovery solenoid valve (13th solenoid valve) V13 is interposed; It is equipped with.

The piping circuit unit 80 is connected to the outflow side of the first recovery tank Ta at one end side (upstream side) and the other end side (downstream side) is connected to the proximal end side of the common piping unit 70. 1 It has the recovery fluid filling piping part 71. A first liquefied refrigerant solenoid valve (tenth solenoid valve) V10 is interposed in the first recovered fluid filling piping section 71.
In addition, a second recovery fluid filling pipe portion 72 having one end side (upstream side) connected to the outflow side of the second recovery tank Ta and the other end side (downstream side) connected to the base end side of the common pipe portion 70 is provided. Have. A second liquefied refrigerant solenoid valve (fourteenth solenoid valve) V14 is interposed in the second recovered fluid filling piping section 72.

  The common pipe 70 is connected at its tip side so that it can communicate between the high pressure connection 91 and the first solenoid valve V1 in the first pipe 81, and the common solenoid valve (19th solenoid valve) V19 and the reverse for the liquefied refrigerant. A stop valve Bb is interposed.

In addition, the piping circuit section 80 includes a first circulation solenoid valve (a twelfth solenoid valve) V12 between the first recovered fluid filling piping section 71 and the inlet side of the oil separator 84a and the connecting check valve Ba. A first circulation piping section 73 connected through the first circulation pipe 73.
Further, the second recovered fluid filling piping section 72 is connected to the inlet side of the oil separator 84a and the connecting check valve Ba via a second circulation solenoid valve (15th solenoid valve) V15. A circulation piping part 74 is provided.

Further, the piping circuit section 80 includes a first residual refrigerant recovery electromagnetic valve between the discharge side of the compressor C and the sixteenth electromagnetic valve V16 and between the ninth electromagnetic valve V9 and the inflow side of the first recovery tank Ta. (17th solenoid valve) It has the 1st residual refrigerant | coolant collection piping part 77 connected via V17.
Further, the piping circuit section 80 includes a second residual refrigerant recovery electromagnetic valve between the discharge side of the compressor C and the sixteenth electromagnetic valve V16 and between the thirteenth electromagnetic valve V13 and the inflow side of the second recovery tank Tb. (18th solenoid valve) It has the 2nd residual refrigerant | coolant collection piping part 78 connected via V18.

  Further, the piping circuit portion 80 exchanges heat between the other end side of the merging piping portion 83 (the merging portion of the merging piping portion 83 and the refrigerant replenishing piping portion 88) and the connecting check valve Ba, and the sixteenth solenoid valve V16. The pressure equalizing piping 79 is connected between the chamber 84d and the pressure equalizing solenoid valve (11th solenoid valve) V11.

In addition, the piping circuit unit 80 includes a evacuation piping circuit unit 85 having a evacuation pump P connected to the merging connection unit Qa (the first piping unit 81, the second piping unit 82, and the merging piping unit 83). It has.
The evacuation piping circuit unit 85 includes a evacuation solenoid valve (fourth solenoid valve) V4 between the merging connection portion Qa and the pump P. Further, a negative pressure purge piping section having a negative pressure purge solenoid valve (fifth solenoid valve) V5 is connected between the fourth solenoid valve V4 and the pump P.
In the illustrated piping circuit unit 80, a pressure sensor, a pressure gauge, a safety valve, a drain piping, and the like are not illustrated. In addition, connecting (placing) the pipe parts means that the pipes are connected (connected) so that fluid can flow.

  As shown in FIG. 2, when the first refrigerant is collected and regenerated in the first collection tank Ta from the vehicle air conditioner S filled with the first refrigerant in advance (first refrigerant collection and regeneration step), The hose unit Ya is selected, and the first high-pressure hose 1A is connected to the high-pressure connecting portion 91 and the first low-pressure hose 2A is connected to the low-pressure connecting portion 92. Further, the first high-pressure joint member 10A of the first high-pressure hose 1A is connected to the high-pressure service valve Sa, and the first low-pressure joint member 20A of the first low-pressure hose 2A is connected to the low-pressure service valve Sb. The control unit opens the first, second, third, ninth, and sixteenth solenoid valves V1, V2, V3, V9, and V16, and the fourth, fifth, sixth, seventh, eighth, and eighth solenoid valves. 10th, 11th, 12th, 13th, 14th, 15th, 17th, 18th, 19th solenoid valves V4, V5, V6, V7, V8, V10, V11, V12, V13, V14, V15, V17 , V18, V19 are closed. Then, the control unit drives the compressor C.

  In the first refrigerant recovery and regeneration step, as indicated by a thick line in FIG. 2, the first refrigerant (fluid) mixed with oil in the vehicle air conditioner S passes through the first high-pressure hose 1 </ b> A and the first piping portion 81. To the merging pipe part 83 and to the merging pipe part 83 via the first low pressure hose 2A and the second pipe part 82. Further, the first refrigerant flows through the recovery / regeneration piping circuit section 84, is subjected to a regeneration process in which oil is removed and liquefied, and is stored in the first recovery tank Ta as liquefied refrigerant (also referred to as liquefied chlorofluorocarbon or recovered fluid). It is done.

  Although the inside of the vehicle air conditioner S is reduced to near atmospheric pressure (near) by the first refrigerant recovery and regeneration process, it is possible to further evacuate the inside of the vehicle air conditioner S to a vacuum state (lower pressure than the atmospheric pressure). And when evacuating (1st evacuation process), it carries out after the 1st refrigerant | coolant collection | recovery reproduction | regeneration process, for example. The control unit opens the first, second, and fourth solenoid valves V1, V2, and V4 to open the third, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth.・ 13th, 14th, 15th, 16th, 17th, 18th, 19th solenoid valves V3, V5, V6, V7, V8, V9, V10, V11, V12, V13, V14, V15, V16, V17 , V18, V19 are closed. Then, the control unit stops the compressor C and operates the vacuum pump P.

  In the first evacuation step, the fluid in the vehicle air conditioner S flows from the high-pressure service valve Sa through the first high-pressure hose 1A and the first piping portion 81 toward the junction connection portion Qa and from the low-pressure service valve Sb. 2 Flows through the low-pressure hose 2A and the second piping portion 82 toward the merging and connecting portion Qa. Furthermore, it flows from the confluence | merging connection part Qa to the pump P for vacuuming via the solenoid valve V4 for vacuuming, and is discharged | emitted to air | atmosphere (outside the apparatus main body 9) after that.

As shown in FIG. 3, when filling vehicle air conditioner oil (first oil filling step), the first high pressure joint member 10A of the first high pressure hose 1A is connected to the high pressure service valve Sa, The first low pressure joint member 20A of the 2 low pressure hose 2A is connected to the low pressure service valve Sb. When the first oil can J1 is connected to the first connection port 96, the control unit opens the first and sixth solenoid valves V1 and V6, and the second, third, fourth, fifth, and fifth states. 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th solenoid valves V2, V3, V4, V5, V7, V8 , V9, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19 are closed.
By making the internal pressure of the first oil can J1 and the piping of the vehicle air conditioner S lower than the piping circuit unit 80 in advance, the oil is supplied to the first oil supply piping unit (as shown by the thick line in FIG. 3). It flows through 86, the 1st junction part Q1 to the junction connection part Qa, the 1st piping part 81, and the 1st high pressure hose 1A, and is filled from the high pressure service valve Sa side.

  Although not shown, when the second oil can J2 is connected to the second connection port 97, the control unit opens the first, third, and seventh electromagnetic valves V1, V3, and V7, 2nd, 4th, 5th, 6th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th solenoid valve V2 , V4, V5, V6, V8, V9, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19 are closed. The second oil flows through the second oil supply pipe section 87, from the second joining section Q2 to the joining connecting section Qa, the first piping section 81, and the first high-pressure hose 1, and from the high-pressure service valve Sa side. Filled.

  As shown in FIG. 4, when the vehicle air conditioner S is filled with the first refrigerant (first regenerated liquefied refrigerant) in the first recovery tank Ta (first regenerated liquefied refrigerant filling step), the first high pressure The first high pressure joint member 10A of the hose 1A is connected to the high pressure service valve Sa, and the first low pressure joint member 20A of the first low pressure hose 2A is connected to the low pressure service valve Sb. The control unit opens the tenth and nineteenth solenoid valves V10 and V19, and the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, eleventh and twelfth.・ 13th, 14th, 15th, 16th, 17th, 18th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V11, V12, V13, V14, V15, V16, V17 and V18 are closed.

  In the first regenerated liquefied refrigerant filling step, the internal pressure of the first recovery tank Ta and the inside of the piping of the vehicle air conditioner S are set to a pressure lower than that of the piping circuit unit 80 (as shown by a bold line in FIG. 4). 1) The first regenerated liquefied refrigerant flows through the first recovered fluid filling piping section 71, the common piping section 70, and the connecting section of the common piping section 70 and the first piping section 81 through the first high pressure hose 1A and the high pressure service valve. It is filled from the Sa side.

  Further, as shown in FIG. 5, the first regenerated liquefied refrigerant is sent to the first high pressure hose 1A, the first low pressure hose 2A, and the recovery / regeneration piping circuit section 84 for pipe cleaning, and the high pressure service valve Sa A first refrigerant connector 6A (connector 6) for connecting the first high-pressure joint member 10A detached from the first low-pressure joint member 20A separated from the low-pressure service valve Sb; Further, in the first oil supply piping part 86, the first connection port 96 side from the first joining part Q1, and in the second oil supply piping part 87, the second connection port part 97 side from the second joining part Q2, Is provided with communication connection means 5 for bringing the communication state into communication.

One end of the first refrigerant connector 6A is detachably provided on the first high-pressure joint member 10A, and the other end is detachably provided on the first low-pressure joint member 20A. It has a flow path for communicating 10A and the first low-pressure joint member 20A.
The first high-pressure / low-pressure joint members 10A and 20A are female-side joints of a plug-in type male-female joint unit, which is also called a one-touch joint or a quick joint, and specifically a female coupler.
One end and the other end of the first refrigerant connector 6A are male side joints of a plug-and-connect type male and female joint unit, also called a one-touch joint or a quick joint, and are specifically male couplers.
One end portion of the first refrigerant connector 6A has the same joint standard (nominal diameter size of the insertion / removal portion and attachment / detachment structure) as the high-pressure service valve Sa.
The other end of the first refrigerant connector 6A has the same joint standard as the low-pressure service valve Sb.
The intermediate part of the connection tool 6 (the first coolant connection tool 6A and the second coolant connection tool 6B described later) may be a pipe-like member, a hose-like member, or the like as long as fluid can be sent. In addition, as for the connection tool 6, it is desirable to provide so that a flow path full length may be 200 mm or less. It is also preferable to provide a check valve inside the connector 6 in order to prevent the inflow of air.

The communication connection means 5 has a first connection port 96 and a detachable first connection member 56 at one end, and a connection having a second connection port 97 and a detachable second connection member 57 at the other end. It is composed of a piping member 55. It is desirable to provide a check valve between the second connection port 97 and the seventh electromagnetic valve V7.
Here, the first and second connection ports 96 and 97 are formed into a cylindrical shape and are threaded into the male screw ports of the first and second oil cans J1 and J2 (can screwed); And a needle-shaped piercing blade for opening the can.
The first and second connecting members 56 and 57 of the connecting pipe member 55 are formed in a cylindrical shape, have male threaded portions that can be screwed into the female threaded portions of the first and second connecting port portions 96 and 97, and the first. The first and second connection ports 96 and 97 have an opening through which the rushing blade is inserted and communicated so that fluid can flow.
The female screw portions of the first connection port portion 96 and the second connection port portion 97 have the same screw standard (screw winding direction, screw shape, number of threads, pitch, nominal diameter).
The male screw portions of the first and second connecting members 56 and 57 and the first and second oil cans J1 and J2 have the same screw standard.
The intermediate part of the connecting piping member 55 may be a pipe-like member, a hose-like member, or the like as long as fluid can be sent. Note that the connecting piping member 55 is desirably provided with a total flow path length of 700 mm or less. The first and second connecting members 56 and 57 of the connecting pipe member 55 and the first and second connection ports 96 and 97 may be connected via a coupler.

  As shown in FIG. 5, when the first regenerated liquefied refrigerant is flowed through the first high pressure hose 1A and the first low pressure hose 2A for cleaning (first hose cleaning step), the first high pressure service valve Sa is separated. The first high-pressure joint member 10A, the low-pressure service valve Sb, and the separated first low-pressure joint member 20A are connected to the outside of the apparatus main body 9 via the first refrigerant connector 6A. The hose 1A and the first low-pressure hose 2A are connected, and the connecting piping member 55 is connected to the first connection port portion 96 and the second connection port portion 97 so as to be in a communication state, thereby preparing a pipe cleaning preparation state. The control unit opens the second, third, ninth, tenth, sixteenth, and nineteenth solenoid valves V2, V3, V9, V10, V16, and V19 to open the first, fourth, fifth, and sixth. 7th, 8th, 11th, 12th, 13th, 14th, 15th, 17th, 18th solenoid valves V1, V4, V5, V6, V7, V8, V11, V12, V13, V14, V15 , V17, V18 are closed. Then, the control unit drives the compressor C.

  The first regenerated liquefied refrigerant flows through the first recovered fluid filling pipe section 71 and the common pipe section 70, and the first pipe section 81 and the first high-pressure hose 1A are connected from the joint section between the common pipe section 70 and the first pipe section 81. It flows through the first refrigerant connector 6A, the first low-pressure hose 2A, and the second piping portion 82, and further flows from the merging connection portion Qa to the merging piping portion 83, and through the connection check valve Ba, the recovery and regeneration piping circuit. Through the part 84, the oil is removed and circulated so as to return to the first recovery tank Ta.

  Further, as shown in FIG. 6, the first refrigerant (first regenerated liquefied refrigerant) in the first recovery tank Ta is supplied to the first oil supply piping section 86, the second oil supply piping section 87, and the recovery / regeneration piping circuit section 84. In the case of flushing and cleaning (first oil supply unit cleaning step), the pipe cleaning preparation state described above is set, and the control unit performs the first, sixth, seventh, ninth, tenth, sixteenth, nineteenth electromagnetics. Valves V1, V6, V7, V9, V10, V16, V19 are opened, and the second, third, fourth, fifth, eighth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, fifteenth 17. The 18th solenoid valve V2, V3, V4, V5, V8, V11, V12, V13, V14, V15, V17, V18 are closed and the compressor C is driven.

  The first regenerated liquefied refrigerant flows from the first recovery tank Ta through the first recovery fluid filling piping section 71 and the common piping section 70, and from the connection section between the common piping section 70 and the first piping section 81 to the first piping section 81 (first 1 solenoid valve V1), and flows from the merging and connecting portion Qa through the first merging portion Q1 to the first oil supply piping portion 86, the connecting piping member 55 (communication connecting means 5), and the second oil supply piping portion 87. Then, the oil is removed from the second merging portion Q2 through the connection check valve Ba through the connection check valve Ba, and is circulated so as to return to the first recovery tank Ta.

  In this way, the first oil supply piping part 86 can be cleaned from the base end (first joining part Q1) to the front end (first connection port part 96), and the second oil supply pipe part 87 is connected to the front end (second connection port). Portion 97) to the base end (second merging portion Q2), the type of oil supplied from the first connection port 96 and the second connection port 97 is limited according to the type of oil (dedicated. ) No need. That is, the first oil filled in the first oil can and the second oil filled in the second oil can may be the same type or different types. For example, when a large amount of oil is to be supplied to a large vehicle in a short time, the first oil can J1 is connected to the first connection port 96, and the second oil is filled with the same type of oil as the first oil can J1. The oil can J2 may be connected to the second connection port 97 and supplied.

  Further, as shown in FIG. 7, the recovery / regeneration piping circuit unit 84 can be cleaned without flowing the first regeneration liquefied refrigerant through the merging piping unit 83 (first recovery / regeneration piping unit circulation cleaning step), and the control unit However, the ninth, twelfth and sixteenth solenoid valves V9, V12 and V16 are opened, and the first, second, third, fourth, fifth, sixth, seventh, eighth, tenth and tenth 11th, 13th, 14th, 15th, 17th, 18th, 19th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V10, V11, V13, V14, V15, V17, V18 , V19 is closed. Further, the control unit drives the compressor C. The recovery / regeneration piping circuit portion 84 can be cleaned with priority and efficiency. Further, the first circulation piping part 73 can be cleaned.

  Further, as shown in FIG. 8, after the first refrigerant is pumped by the compressor C to the first recovery tank Ta via the heat exchanger 84d and the liquefier 84e (after the first refrigerant recovery and regeneration process), the first refrigerant is supplied to the compressor C. The first refrigerant remaining in the heat exchanger 84d and the liquefier 84e can be sucked out and pumped to the first recovery tank Ta (first residual refrigerant recovery step). 11. Open the 17th solenoid valves V11, V17 to the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 12th, 13th, 14th, 15th, 16th, 18th and 19th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V12, V13, V14, V15, V16, V18, V19 Close. Further, the control unit drives the compressor C.

  In the piping section between the ninth solenoid valve V9 and the liquefier 84e (the liquefaction outlet side), in the liquefier 84e, between the liquefier 84e (the liquefaction inlet side) and the heat exchanger 84d (the heat exchange outlet side). The first refrigerant remaining in the pipe part, in the heat exchanger 84d, in the pipe part between the heat exchanger 84d (on the heat exchange inlet side) and the sixteenth solenoid valve V16 is converted into the first refrigerant recovery and regeneration step. Flows in the reverse direction, flows to the inlet side of the oil separator 84a using the pressure equalizing pipe section 79, and sucks in from the suction port side of the compressor C through the dry filter 84b. Then, the remaining first refrigerant is recovered by being pumped from the discharge port side of the compressor C to the first recovery tank Ta via the first refrigerant recovery piping section 77. The refrigerant is sucked out from the liquefaction inlet side of the liquefier 84e and sucked out from the heat exchange inlet side of the heat exchanger 84d to recover the residual refrigerant. It is possible to prevent a large amount of refrigerant from remaining in the recovery / regeneration piping circuit unit 84, and to prevent the second refrigerant different from the first refrigerant from being mixed during the subsequent operation.

  In the illustrated example, the pressure equalizing pipe 79 is used in combination with the compressor suction / discharge side communication pipe, and the pressure equalizing solenoid valve V11 is used in combination with the compressor suction / discharge side communication solenoid valve. That is, the pressure equalizing pipe section 79 can also be referred to as a compressor suction / discharge side communication pipe section 79. The pressure equalizing solenoid valve (eleventh solenoid valve) V11 can also be referred to as a compressor suction / discharge side communication solenoid valve V11.

  Although not shown, the hose cleaning process and the oil supply unit cleaning process can be performed simultaneously (in the same process). After the pipe cleaning preparation state is set, the control unit performs the second and sixth operations. 7th, 9th, 10th, 16th, 19th solenoid valves V2, V6, V7, V9, V10, V16, V19 are opened, and the first, third, fourth, fifth, eighth, 11th, 12th, 13th, 14th, 15th, 17th, 18th solenoid valves V1, V3, V4, V5, V8, V11, V12, V13, V14, V15, V17, V18 are closed, Compressor C is driven.

  The first regenerated liquefied refrigerant flows from the first recovery tank Ta through the first recovered fluid filling piping section 71 and the shared piping section 70, and from the connection section between the shared piping section 70 and the first piping section 81 to the first piping section 81 and the first piping. 1 A high pressure hose 1A, a first refrigerant connector 6A, a first low pressure hose 2A, and a second piping part 82, and further, a first oil supply piping part from the joining connection part Qa via the first joining part Q1. 86, the connecting piping member 55 and the second oil supply piping section 87, and the oil is removed from the second merging section Q2 via the connection check valve Bb through the recovery and regeneration piping circuit section 84 to remove the first recovery. Circulate to return to the tank Ta.

  Although not shown in the figure, one end of the merged pipe portion 83 is not cleaned without cleaning the first high pressure hose 1A and the first low pressure hose 2A with the first regenerated liquefied refrigerant (without performing the first hose cleaning step). From the side to the other end can be sent through the third electromagnetic valve V3 for cleaning (the first electromagnetic valve cleaning step for merging), and the control unit performs the first, third, ninth, and tenth.・ 16th and 19th solenoid valves V1, V3, V9, V10, V16 and V19 are opened, and 2nd, 4th, 5th, 6th, 7th, 8th, 11th, 12th and 13th The 14th, 15th, 17th, and 18th solenoid valves V2, V4, V5, V6, V7, V8, V11, V12, V13, V14, V15, V17, and V18 are closed. Further, the control unit drives the compressor C.

  In the first merging solenoid valve cleaning step, the first regenerated liquefied refrigerant passes through the merging connecting portion Qa and the third solenoid valve V3 from the first recovered fluid filling pipe portion 71 via the first solenoid valve V1. And then flows through the recovery and regeneration piping circuit portion 84 via the connection check valve Ba to remove the oil and circulate back to the first recovery tank Ta. This cleaning step is preferably performed before or after the step of simultaneously cleaning the first hose cleaning step and the first oil supply unit cleaning step.

Although not shown, before the compressor C is driven in the first cleaning step and the residual refrigerant recovery step, the control unit opens the eleventh and sixteenth electromagnetic valves V11 and V16, and 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 12th, 13th, 14th, 15th, 17th, 18th, 19th electromagnetic Valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V12, V13, V14, V15, V17, V18, V19 are closed, and the discharge side and suction side of compressor C are leveled. The refrigerant remaining on the discharge side of the compressor C is caused to flow to the oil separator 84a due to the pressure difference generated between the discharge side and the suction side of the compressor C (first equalization). Pressure pipe cleaning step).
By performing a combination of some of the first cleaning steps and the residual refrigerant recovery step described above, the entire piping circuit unit 80 can be cleaned with the first refrigerant.

Here, the high pressure service valve Sa of the vehicle air conditioner S filled with the first refrigerant and the high pressure service valve Sa ′ of another vehicle air conditioner S ′ filled with the second refrigerant different from the first refrigerant are described. , Fitting standards (nominal diameter dimensions of the insertion / extraction part and attachment / detachment structure) are different.
Further, the low-pressure service valve Sb of the vehicle air conditioner S and the low-pressure service valve Sb ′ of the other vehicle air conditioner S ′ have different joint standards (nominal diameter dimensions and attachment / detachment structure of the insertion / removal part).

  Therefore, as shown in FIG. 9, when the second refrigerant is collected in the second collection tank Tb from another vehicle air conditioner S ′ pre-filled with the second refrigerant different from the first refrigerant (second refrigerant collection). In the regeneration step, the second hose unit Yb is selected, the second high pressure hose 1B is connected to the high pressure connection portion 91, and the second low pressure hose 2B is connected to the low pressure connection portion 92. Further, the second high pressure hose 1B is connected to the high pressure service valve Sa ′ of another vehicle air conditioner S ′, and the second low pressure hose 2B is connected to the low pressure service valve Sb ′ of another vehicle air conditioner S ′. The control unit opens the first, second, third, thirteenth, and sixteenth solenoid valves V1, V2, V3, V13, and V16, and the fourth, fifth, sixth, seventh, eighth, and ninth.・ 10th, 11th, 12th, 14th, 15th, 17th, 18th, 19th solenoid valves V4, V5, V6, V7, V8, V9, V10, V11, V12, V14, V15, V17, V18 and V19 are closed. Then, the control unit drives the compressor C.

  In the second refrigerant recovery and regeneration step, as shown by a thick line in FIG. 9, the second refrigerant (fluid) mixed with oil in another vehicle air conditioner S ′ is the second high-pressure hose 1B and the first pipe. It flows to the merging pipe part 83 via the part 81 and flows to the merging pipe part 83 via the second low-pressure hose 2B and the second pipe part 82. Further, the second refrigerant flows through the recovery / regeneration piping circuit section 84, is subjected to a regeneration process in which oil is removed and liquefied, and is stored in the second recovery tank Tb as a liquefied refrigerant (also referred to as liquefied chlorofluorocarbon or recovered fluid). It is done.

  In the case of evacuation (second evacuation step), although not shown, the second high pressure hose 1B is connected to the high pressure service valve Sa ′ of another vehicle air conditioner S ′, and the second low pressure hose. 2B is connected to a low pressure service valve Sb ′ of another vehicle air conditioner S ′. The opening and closing of the solenoid valve V is the same as in the first evacuation step.

  Further, when filling the vehicle air conditioner oil into another vehicle air conditioner S ′ (second oil filling step), although not shown, the second high pressure hose 1B is connected to another vehicle air conditioner S ′. Connected to the high pressure service valve Sa ′, the second low pressure hose 2B is connected to the low pressure service valve Sb ′ of another vehicle air conditioner S ′. The opening and closing of the solenoid valve V is the same as in the first oil filling process.

  In addition, as shown in FIG. 10, the second refrigerant (second regenerated liquefied refrigerant) in the second recovery tank Tb can be filled into another vehicle air conditioner S ′ (the second regenerated liquefied refrigerant filling step is ), The second high pressure hose 1B is connected to the high pressure service valve Sa ′, and the second low pressure hose 2B is connected to the low pressure service valve Sb ′. The control unit opens the 14th and 19th solenoid valves V14 and V19, and the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth and eleventh.・ 12th, 13th, 15th, 16th, 17th, 18th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, V15, V16, V17 and V18 are closed.

  In the second regenerated liquefied refrigerant filling step, the second regenerated liquefied refrigerant is used for the second high pressure from the second recovered fluid filling pipe section 72, the common pipe section 70, and the connection section between the common pipe section 70 and the first pipe section 81. It flows through the hose 1B and is filled from the high-pressure service valve Sa ′ side of another vehicle air conditioner S ′.

Furthermore, as shown in FIG. 11, the second high-pressure joint member 10B detached from the high-pressure service valve Sa ′ of another vehicle air conditioner S ′ and the low-pressure service valve Sb ′ of another vehicle air-conditioner S ′ are detached. A second refrigerant connector 6B (connector 6) for connecting the second low-pressure joint member 20B is provided.
The second refrigerant connector 6B has one end detachably provided on the second high-pressure joint member 10B and the other end detachably provided on the second low-pressure joint member 20B. There is a flow path in the interior for communicating 10B and the second low-pressure joint member 20B.
The second high-pressure / low-pressure joint members 10B and 20B are female-side joints of plug-in type female-male joint units, which are also called one-touch joints and quick joints, and are specifically female couplers.
One end and the other end of the second refrigerant connector 6B are male side joints of a plug-and-connect type male and female joint unit, which is also called a one-touch joint or a quick joint, and specifically a male coupler.
One end portion of the second refrigerant connector 6B has the same joint standard (nominal diameter size and detachable structure of the insertion / extraction portion) as the high-pressure service valve Sa ′ of another vehicle air conditioner S ′.
The other end of the second refrigerant connector 6B has the same joint standard as the low-pressure service valve Sb ′ of another vehicle air conditioner S ′.

  When the second regenerated liquefied refrigerant is sent to the second high pressure hose 1B, the second low pressure hose 2B, and the recovery / regeneration piping circuit section 84 for pipe cleaning (second hose cleaning step), The high pressure hose 1B and the second low pressure hose 2B are connected by the second refrigerant connector 6B (connector 6), and the connection pipe member 55 is connected to the first connection port 96 and the second connection port 97. As a communication state, a pipe cleaning preparation state is set. The control unit opens the second, third, thirteenth, fourteenth, sixteenth, and nineteenth solenoid valves V2, V3, V13, V14, V16, and V19 to open the first, fourth, fifth, and sixth.・ 7th, 8th, 9th, 10th, 11th, 12th, 15th, 17th, 18th solenoid valves V1, V4, V5, V6, V7, V8, V9, V10, V11, V12, V15 , V17, V18 are closed. Further, the control unit drives the compressor C.

  The second regenerated liquefied refrigerant flows through the second recovered fluid filling piping section 72 and the common piping section 70, and the first piping section 81 and the second high-pressure hose 1B are connected to the connecting section between the common piping section 70 and the first piping section 81. It flows through the second refrigerant connector 6B, the second low-pressure hose 2B, and the second piping portion 82, and further flows from the merging connection portion Qa to the merging piping portion 83, and through the connecting check valve Ba, the recovery and regeneration piping circuit. The oil is removed through the part 84 and circulated so as to return to the second recovery tank Tb.

  In addition, as shown in FIG. 12, when the second regenerated liquefied refrigerant is passed through the first oil supply piping section 86, the second oil supply piping section 87, and the recovery / regeneration piping circuit section 84 for cleaning (second oil supply section). The cleaning process) is in the above-described pipe cleaning preparation state, and the control unit performs the first, sixth, seventh, thirteenth, fourteenth, sixteenth, and nineteenth electromagnetic valves V1, V6, V7, V13, V14, V16. , V19 are opened, and the second, third, fourth, fifth, eighth, ninth, tenth, eleventh, twelfth, fifteenth, seventeenth and eighteenth solenoid valves V2, V3, V4 V5, V8, V9, V10, V11, V12, V15, V17, and V18 are closed, and the compressor C is driven.

  The second regenerated liquefied refrigerant flows from the second recovery tank Tb through the second recovered fluid filling pipe part 72 and the common pipe part 70, and from the connection part between the common pipe part 70 and the first pipe part 81 to the first pipe part 81 (first 1 solenoid valve V1), and flows from the merging and connecting portion Qa through the first merging portion Q1 to the first oil supply piping portion 86, the connecting piping member 55 (communication connecting means 5), and the second oil supply piping portion 87. Then, the oil is removed from the second merging portion Q2 through the connection check valve Ba through the connection check valve Ba, and then circulated so as to return to the second recovery tank Tb.

  Further, as shown in FIG. 13, it is possible to clean the recovery / regeneration piping circuit unit 84 without flowing the second regenerated liquefied refrigerant to the merging piping unit 83 (the second recovery / regeneration piping unit circulation cleaning step), and control is performed. Opens the thirteenth, fifteenth, sixteenth solenoid valves V13, V15, V16, and the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, ninth 10th, 11th, 12th, 14th, 17th, 18th, 19th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V14, V17, V18 , V19 is closed. Further, the control unit drives the compressor C.

  Further, as shown in FIG. 14, after the second refrigerant is pumped by the compressor C to the second recovery tank Tb via the heat exchanger 84d and the liquefier 84e (after the second refrigerant recovery and regeneration step), the heat exchanger 84d and the second refrigerant remaining in the liquefier 84e can be sucked out by the compressor C and pumped to the second recovery tank Tb (the second residual refrigerant recovery step). The 11th and 18th solenoid valves V11 and V18 are opened, and the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, twelfth and thirteenth.・ 14th, 15th, 16th, 17th, 19th solenoid valves V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V12, V13, V14, V15, V16, V17, V19 Is closed. Further, the control unit drives the compressor C.

  In the piping section between the thirteenth solenoid valve V13 and the liquefier 84e (the liquefaction outlet side), in the liquefier 84e, between the liquefier 84e (the liquefaction inlet side) and the heat exchanger 84d (the heat exchange outlet side). The second refrigerant remaining in the pipe part, in the heat exchanger 84d, in the pipe part between the heat exchanger 84d (on the heat exchange inlet side) and the sixteenth solenoid valve V16 is converted into the second refrigerant recovery and regeneration step. Flows in the reverse direction, flows to the inlet side of the oil separator 84a using the pressure equalizing pipe section 79, and sucks in from the suction port side of the compressor C through the dry filter 84b. Then, the remaining second refrigerant is recovered by being pumped from the discharge port side of the compressor C to the second recovery tank Tb via the second refrigerant recovery piping section 78. The refrigerant is sucked out from the liquefaction inlet side of the liquefier 84e and sucked out from the heat exchange inlet side of the heat exchanger 84d to recover the residual refrigerant. It is possible to prevent a large amount of the second refrigerant from remaining in the recovery / regeneration piping circuit section 84, and to prevent the first refrigerant different from the second refrigerant from being mixed during the subsequent operation.

  Although not shown in the figure, the second hose cleaning step and the second oil supply unit cleaning step can be performed simultaneously (in the same step). The second, sixth, seventh, thirteenth, fourteenth, sixteenth, and nineteenth electromagnetic valves V2, V6, V7, V13, V14, V16, and V19 are opened, and the first, third, fourth, Fifth, eighth, ninth, tenth, eleventh, twelfth, fifteenth, seventeenth and eighteenth solenoid valves V1, V3, V4, V5, V8, V9, V10, V11, V12, V15, V17, V18 is closed and the compressor C is driven.

  The second regenerated liquefied refrigerant flows from the second recovery tank Tb through the second recovered fluid filling pipe part 72 and the common pipe part 70, and from the connection part between the common pipe part 70 and the first pipe part 81 to the first pipe part 81 and the second pipe. 2 flows through the high pressure hose 1B, the connector 6, the second low pressure hose 2B and the second piping portion 82, and further connects to the first oil supply piping portion 86 and the connecting piping from the joining connecting portion Qa via the first joining portion Q1. The oil flows through the member 55 and the second oil supply piping section 87, and then flows from the second junction Q2 through the recovery check piping circuit section 84 via the connection check valve Ba to remove the oil and return to the second recovery tank Tb. Circulate like so.

  Although not shown in the drawing, the second high-pressure hose 1B and the second low-pressure hose 2B are not washed with the second regenerated liquefied refrigerant (without performing the second hose washing step), and one end of the merging pipe portion 83. From the side to the other end through the third electromagnetic valve V3 and can be cleaned (the second electromagnetic valve cleaning step for merging), and the control unit performs the first, third, thirteenth and fourteenth.・ 16th and 19th solenoid valves V1, V3, V13, V14, V16 and V19 are opened, and 2nd, 4th, 5th, 6th, 7th, 8th, 9th, 10th and 11th・ Twelfth, fifteenth, seventeenth and eighteenth solenoid valves V2, V4, V5, V6, V7, V8, V9, V10, V11, V12, V15, V17 and V18 are closed. Further, the control unit drives the compressor C. This cleaning step is preferably performed before or after the step of simultaneously cleaning the second hose cleaning step and the second oil supply unit cleaning step.

  In the second merging solenoid valve cleaning step, the second regenerated liquefied refrigerant flows from the second recovered fluid filling piping part 72 through the common piping part 70 and the first electromagnetic valve V1 to the merging connection part Qa and the third electromagnetic valve. Flows through the merging pipe part 83 so as to pass through V3, and then flows through the recovery / regeneration pipe circuit part 84 via the connection check valve Ba, so that the oil is removed and circulates back to the second recovery tank Tb. To do.

Although not shown, before the compressor C is driven in the above-described second cleaning process and residual refrigerant recovery process, the control unit opens the eleventh and sixteenth solenoid valves V11 and V16 to open the first 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 12th, 13th, 14th, 15th, 17th, 18th, 19th solenoid valve V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V12, V13, V14, V15, V17, V18, V19 are closed, and the discharge side and suction side of compressor C are closed. The refrigerant that remains on the discharge side of the compressor C is caused to flow through the oil separator 84a due to the pressure difference generated between the discharge side and the suction side of the compressor C (second flow). Pressure equalizing pipe section cleaning step).
In this way, the piping circuit unit 80 can be entirely cleaned with the second refrigerant by performing a combination of some of the second cleaning steps and the residual refrigerant recovery step.

FIG. 15 shows another example of the communication connection means 5.
The communication connecting means 5 is constituted by a bypass pipe part 50 that connects the intermediate part of the first oil supply pipe part 86 and the intermediate part of the second oil supply pipe part 87 via a bypass solenoid valve Va.
A first check valve B6 is provided in the vicinity of the base end side of the first connection port portion 96 in the first oil supply piping portion 86, and the first check valve B6 is provided in the vicinity of the base end side of the second connection port portion 97 in the second oil supply piping portion 87. 2 check valve B7 is provided. One end side of the bypass pipe 50 is connected between the first check valve B6 and the sixth solenoid valve V6 (near the base end side of the first check valve B6), and the second check valve B7 and the seventh solenoid valve are connected. The other end side of the bypass piping 50 is connected between the valves V7 (near the base end side of the second check valve B7). The first connection port 96 is dedicated to the first oil can J1 (first oil), and the second connection port 97 is filled with the second oil different from the first oil. The second oil is different from the first oil).
When the first oil supply pipe part 86 and the second oil supply pipe part 87 are cleaned, the bypass pipe part 50 is opened so that the recovered fluid (first regenerated liquefied refrigerant or second Recycled liquefied refrigerant) is sent to enable pipe cleaning.

Next, in another embodiment shown in FIG. 16, the first high-pressure joint member 10A whose front end is detachable from the high pressure service valve Sa of the vehicle air conditioner S and the front end of the low pressure service valve Sb of the vehicle air conditioner S are attached and detached. A first low-pressure joint member 20A.
Then, a high pressure hose having a second high pressure joint member 10B that can be attached to and detached from a high pressure service valve Sa ′ of another vehicle air conditioner S ′ at the distal end and a base end connected to the piping circuit section 80 on the apparatus main body 9 side. 1 and a low-pressure hose 2 having a second low-pressure joint member 20B that is detachably attached to a low-pressure service valve Sb 'of another vehicle air conditioner S' and whose base end is connected to the piping circuit section 80 on the apparatus body 9 side. And.
Then, the base end side of the first high pressure joint member 10A is detachably attached to the second high pressure joint member 10B of the high pressure hose 1 via the high pressure adapter member 7, and the second low pressure hose 2 of the low pressure hose 2 is attached. The base end side of the first low-pressure joint member 20A is detachably attached to the joint member 20B via the low-pressure adapter member 8.

The high-pressure adapter member 7 has a flow path in communication with the second high-pressure joint member 10B and the first high-pressure joint member 10A.
The base end portion of the high-pressure adapter member 7 is detachably attached to the second high-pressure joint member 10B, and is connected to the high-pressure service valve Sa ′ of another vehicle air conditioner S ′ and the joint standard (the nominal diameter size of the insertion / removal portion and the attachment / detachment). Structure) is the same. Specifically, it is a male coupler.
The distal end portion of the high-pressure adapter member 7 is detachably attached or fixed to the proximal end side of the first high-pressure joint member 10A. That is, the first high-pressure joint member 10A and the high-pressure adapter member 7 can be provided integrally or separately.

The low-pressure adapter member 8 has a flow path communicating with the second low-pressure joint member 20B and the first low-pressure joint member 20A.
The base end portion of the low-pressure adapter member 8 is detachably attached to the second low-pressure joint member 20B, and is connected to the low-pressure service valve Sb 'of another vehicle air conditioner S' and the joint standard (the nominal diameter size of the insertion / removal portion and the attachment / detachment). Structure) is the same. Specifically, it is a male coupler.
The distal end portion of the low-pressure adapter member 8 is detachably attached or fixed to the proximal end side of the first low-pressure joint member 20A. That is, the first low-pressure joint member 20A and the low-pressure adapter member 8 can be provided integrally or separately.

When working on the vehicle air conditioner S filled with the first refrigerant, as shown in FIG. 16 (b), the second high-pressure joint member 10B is connected to the first high-pressure adapter member 7 via the high-pressure adapter member 7. After the joint member 10A is connected and the first low-pressure joint member 20A is connected to the second low-pressure joint member 20B via the low-pressure adapter member 8, the first refrigerant work preparation state is established, and then the same as in the above-described embodiment. The first refrigerant recovery step, the oil filling step, the first regenerated liquefied refrigerant filling step, each washing step, etc. are performed.
When working on another vehicle air conditioner S ′ filled with the second refrigerant, as shown in FIG. 16A, the second high pressure joint member 10B to the high pressure adapter member 7 and the second 1 After detaching the high pressure joint member 10A and detaching the low pressure adapter member 8 and the first low pressure joint member 20A from the second low pressure joint member 20B to obtain the second refrigerant work preparation state, Similarly, a second refrigerant recovery process, an oil filling process, a second regenerated liquefied refrigerant filling process, each cleaning process, and the like are performed. Other configurations and operational effects are the same as those of the embodiment described with reference to FIGS.
The first high-pressure joint member 10A and the high-pressure adapter member 7 can be provided integrally or separately. Further, the first low-pressure joint member 20A and the low-pressure adapter member 8 can be provided integrally or separately.

  In the present invention, the design can be changed, and three or more recovery tanks may be provided. For example, a third recovery tank is provided, and a third recovery fluid filling piping unit, a third circulation piping unit, a third tank supply piping unit, a third residual refrigerant recovery piping unit, a third recovery / regeneration solenoid valve, A three-liquefied refrigerant solenoid valve, a third circulation solenoid valve, and a third residual recovery solenoid valve may be provided. Moreover, you may comprise so that it may respond | correspond to the 2nd refrigerant can and the 3rd refrigerant can filled with the refrigerant | coolant of a kind different from the refrigerant can K. For example, second and third refrigerant can connection ports, second and third refrigerant replenishment piping sections, and second and third refrigerant replenishment solenoid valves may be provided. The first hose unit Ya and the second hose unit Yb may be fixed to the apparatus main body 9. 6, 7, 8, 12, 13 and 14, and the first and second pressure equalizing pipe section cleaning steps (not shown) are connected to the high pressure hose 1 and the low pressure hose 2. 6 may not be connected. Further, the connecting piping member 55 may not be connected in the steps of FIGS. 5, 7, 8, 13, 13 and the first and second pressure equalizing piping section cleaning steps (not shown). In addition, the second cleaning step (the connecting tool 6 and the connecting pipe member 55 used in the second hose cleaning step and the second oil supply unit cleaning step are the same as the first cleaning step (the first hose cleaning step and the second hose cleaning step). The connector 6 and the connecting piping member 55 used for the first oil supply section cleaning step) are the same, but for the first cleaning step (for the first refrigerant) and for the second cleaning step (second The seventeenth solenoid valve V17 and the eighteenth solenoid valve V18 can be opposed to the pressure (internal pressure) from each recovery tank Ta, Tb (strong against reverse pressure). In addition, a backflow preventing solenoid valve may be interposed between the seventeenth solenoid valve V17 and the first recovery tank Ta, or between the eighteenth solenoid valve V18 and the second recovery tank Tb. The regeneration piping circuit unit 84 may be a circuit other than that shown in the drawing as long as the recovered refrigerant can be regenerated. Although the liquefied refrigerant and oil do not flow from the merging pipe section 83 to the recovery and regeneration pipe circuit section 84 by making the pressure in the pipe of the vehicle air conditioner S lower than that of the pipe circuit section 80 in the oil filling process, In the second oil filling step, a backflow prevention solenoid valve that is closed so as to prevent liquefied refrigerant or oil from flowing to the recovery and regeneration piping circuit portion 84 is interposed between the merging piping portion 83 and the recovery and regeneration piping circuit portion 84. 2 to 15, the 19th solenoid valve V19 may be omitted.

  As described above, the fluid recovery / regeneration / filling device of the present invention includes the first recovery tank Ta for storing the first refrigerant recovered from the vehicle air conditioner S and another vehicle air conditioner S ′ different from the vehicle air conditioner S. Since the second recovery tank Tb for storing the second refrigerant recovered from the above is provided, it is possible to prevent different types of refrigerant from being mixed and maintain (hold) appropriate refrigerant performance. One unit can handle multiple types of refrigerant recovery work. There is no need to own a plurality of fluid collection / regeneration / filling devices according to the type of refrigerant, and maintenance work and costs can be reduced.

  In addition, after the first refrigerant is pumped by the compressor C through the liquefier 84e to the first recovery tank Ta, the first refrigerant remaining in the liquefier 84e is sucked out by the compressor C to the first recovery tank Ta. The second refrigerant is pumped by the compressor C through the liquefier 84e to the second recovery tank Tb, and then the second refrigerant remaining in the liquefier 84e is sucked out by the compressor C to be second. 2 Since the pump is configured to be pumped to the recovery tank Tb, it is possible to prevent different types of refrigerant from being mixed in the piping circuit unit 80 on the apparatus main body 9 side, particularly in the recovery and regeneration piping circuit unit 84. The compressor C for sending the refrigerant when collecting and regenerating the refrigerant can be used for collecting the residual refrigerant, the number of parts can be reduced, the manufacturing can be easily performed, and the apparatus main body 9 can be reduced in size and weight. it can.

  The first high-pressure hose 1A having a first high-pressure joint member 10A that is detachably attached to the high-pressure service valve Sa of the vehicle air conditioner S, and the first low-pressure joint that is detachable to the low-pressure service valve Sb of the vehicle air conditioner S. A second hose unit Ya having a first low pressure hose 2A having a member 20A, and a second high pressure joint member 10B detachably attached to a high pressure service valve Sa 'of another vehicle air conditioner S'. A second hose unit Yb comprising a high-pressure hose 1B and a second low-pressure hose 2B having a second low-pressure joint member 20B detachably attached to a low-pressure service valve Sb ′ of another vehicle air conditioner S ′; Therefore, it is possible to prevent different types of refrigerant from being mixed in the hose, and to obtain appropriate refrigerant performance.

  In addition, since the apparatus main body 9 including the first recovery tank Ta and the second recovery tank Tb is provided, the first hose unit Ya or the second hose unit Yb is selected and connected to the apparatus main body 9. In addition, the number of parts (solenoid valve, branch piping portion, etc.) of the piping circuit section 80 on the apparatus main body 9 side can be reduced, and manufacturing can be performed easily and quickly.

  The first high-pressure joint member 10A is detachably attached to the high-pressure service valve Sa of the vehicle air conditioner S, and the first low-pressure joint member 20A is detachable to the low-pressure service valve Sb of the vehicle air conditioner S. A high-pressure hose 1 having a second high-pressure joint member 10B detachably attached to the high-pressure service valve Sa ′ of the vehicle air-conditioning apparatus S ′ at the distal end and the base end connected to the apparatus main body 9 side, and the other vehicle air-conditioning A low-pressure hose 2 having a second low-pressure joint member 20B detachably attached to the low-pressure service valve Sb ′ of the apparatus S ′ and having a base end connected to the apparatus main body 9 side. Since the first high pressure joint member 10A is detachably attached to the high pressure joint member 10B, and the first low pressure joint member 20A is detachably attached to the second low pressure joint member 20B of the low pressure hose 2. While having a simple configuration, the first refrigerant is charged. Has been that the vehicle air conditioning system S and the second refrigerant can cope with both another vehicle air conditioning system S'being filled. It is possible to easily and quickly switch between the work preparation for the first refrigerant and the work preparation for the second refrigerant. The hose portion can be shared and the number of parts is reduced, so that it can be manufactured easily (inexpensive).

DESCRIPTION OF SYMBOLS 1 High pressure hose 1A 1st high pressure hose 1B 2nd high pressure hose 2 Low pressure hose 2A 1st low pressure hose 2B 2nd low pressure hose 9 Device body
10A First high pressure joint member
10B Second high pressure joint member
20A First low pressure joint member
20B Second low pressure joint member
84e Liquefier C Compressor S Vehicle air conditioner S 'Another vehicle air conditioner Sa High pressure service valve Sa' High pressure service valve Sb Low pressure service valve Sb 'Low pressure service valve Ta First collection tank Tb Second collection tank Ya First hose unit Yb Second hose unit

Claims (5)

  A first recovery tank (Ta) for storing the first refrigerant recovered from the vehicle air conditioner (S) and a second refrigerant recovered from another vehicle air conditioner (S ′) different from the vehicle air conditioner (S). And a second recovery tank (Tb) for storing the fluid. After the first refrigerant is pumped by the compressor (C) through the liquefier (84e) to the first recovery tank (Ta), it remains in the liquefier (84e) by the compressor (C). The first refrigerant is sucked out and pumped to the first recovery tank (Ta).
After the second refrigerant is pumped by the compressor (C) through the liquefier (84e) to the second recovery tank (Tb), it remains in the liquefier (84e) by the compressor (C). A fluid recovery / regeneration / filling device configured to suck out the second refrigerant and pump it to the second recovery tank (Tb). A first high pressure hose (1A) having a first high pressure joint member (10A) detachably attached to a high pressure service valve (Sa) of the vehicle air conditioner (S), and a low pressure service valve of the vehicle air conditioner (S) A first hose unit (Ya) comprising: a first low pressure hose (2A) having a first low pressure joint member (20A) detachably attached to (Sb);
A second high-pressure hose (1B) having a second high-pressure joint member (10B) detachably attached to a high-pressure service valve (Sa ') of the other vehicle air conditioner (S'); A second hose unit (Yb) comprising a second low pressure hose (2B) having a second low pressure joint member (20B) detachably attached to the low pressure service valve (Sb ') of S');
The fluid recovery / regeneration / filling apparatus according to claim 1 or 2, further comprising: An apparatus main body (9) including the first recovery tank (Ta) and the second recovery tank (Tb);
The fluid recovery / regeneration / filling device according to claim 3, wherein the first hose unit (Ya) or the second hose unit (Yb) is selected and connected to the device main body (9). A first high pressure joint member (10A) detachably attached to the high pressure service valve (Sa) of the vehicle air conditioner (S) and a first low pressure detachable to the low pressure service valve (Sb) of the vehicle air conditioner (S). A joint member (20A),
A high pressure having a second high-pressure joint member (10B) detachably attached to the high-pressure service valve (Sa ') of the other vehicle air conditioner (S') at the distal end and the base end connected to the apparatus main body (9) side. Hose (1) and the second low-pressure service valve (Sb ') of the other vehicle air conditioner (S') have a detachable second low-pressure joint member (20B) and the base end is the device main body (9) A low-pressure hose (2) connected to the side,
The first high pressure joint member (10A) is detachably attached to the second high pressure joint member (10B) of the high pressure hose (1), and the second low pressure joint member of the low pressure hose (2) is attached. The fluid recovery / regeneration / filling device according to claim 1 or 2, wherein the first low-pressure joint member (20A) is detachably attached to (20B).

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