JP6235090B1 - Fluid recovery and refilling equipment - Google Patents

Abstract

The present invention provides a fluid collection / regeneration / filling device capable of collecting a plurality of types of refrigerants by one unit and capable of being filled while maintaining appropriate refrigerant performance. A first recovery tank Ta for storing a first refrigerant recovered from a vehicle air conditioner S and a second recovery tank Tb for storing a second refrigerant recovered from another vehicle air conditioner different from the vehicle air conditioner S are provided. The apparatus main body 9, the first high-pressure hose 1A having the first high-pressure joint member 10A that is detachable from the high-pressure service valve Sa of the vehicle air conditioner S, and the low-pressure service valve Sb of the vehicle air-conditioner S are detachable. A first hose unit Ya comprising a first low pressure hose 2A having a first low pressure joint member 20A and a second high pressure joint member 10B detachably attached to a high pressure service valve of another vehicle air conditioner. A high pressure hose 1B and a second hose unit Yb comprising a second low pressure hose 2B having a second low pressure joint member 20B which is detachable from a low pressure service valve of another vehicle air conditioner. That. [Selection] Figure 16

Description

  The present invention relates to a fluid recovery / regeneration / 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, and a first high pressure joint member having a first high pressure joint member detachably attached to the high pressure service valve of the vehicle air conditioner. A first hose unit comprising a hose and a first low pressure hose having a first low pressure joint member detachably attached to the low pressure service valve of the vehicle air conditioner, and a high pressure service valve of the other vehicle air conditioner A second high-pressure hose having a detachable second high-pressure joint member; a second low-pressure hose having a second low-pressure joint member detachably attached to the low-pressure service valve of the other vehicle air conditioner; A first non-use joint connecting portion to which at least one of the first high-pressure joint member and the first low-pressure joint member can be connected / separated, and a second hose unit provided. At least one of the first determination unit for determining whether or not the first unused joint connection part is in a joint connection state, and the second high-pressure joint member and the second low-pressure joint member can be connected and disconnected. In the determination results of the second unused joint connecting portion, the second determining portion for determining whether the second unused joint connecting portion is in a joint connected state, the first determining portion and the second determining portion. And a controller that determines which one of the first recovery tank and the second recovery tank to use.

  In addition, the apparatus main body is selected from the piping circuit unit having the first recovery tank and the second recovery tank, and the first high-pressure hose and the second high-pressure hose connected to the piping circuit unit. A high-pressure connection member connectable to the piping circuit section, and a low-pressure connection member that can be selectively connected to the first low-pressure hose and the second low-pressure hose. A corresponding hose capable of determining that the first high-pressure hose and the second high-pressure hose correspond to the connection member and that the first low-pressure hose and the second low-pressure hose correspond to the low-pressure connection member. The identification means is provided to the high pressure connection member, the first high pressure hose, the second high pressure hose, the low pressure connection member, the first low pressure hose, and the second low pressure hose.

Alternatively, a first recovery tank for storing the first refrigerant recovered from the vehicle air conditioner and a second recovery tank for storing the second refrigerant recovered from another vehicle air conditioner different from the vehicle air conditioner. A first high pressure joint member detachably attached to the high pressure service valve of the vehicle air conditioner; 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 a high-pressure service valve of the other vehicle air conditioner at the distal end and a base end connected to the apparatus main body side; and A low-pressure hose having a second low-pressure joint member detachably attached to the low-pressure service valve and having a proximal end connected to the apparatus main body, and the second high-pressure joint member of the high-pressure hose includes the above-mentioned The first high-pressure joint member is configured to be detachable, and the first low-pressure joint member is configured to be detachable to the second low-pressure joint member of the low-pressure hose. A non-use joint connecting portion at which at least one of the member and the first low-pressure joint member can be connected / separated, a determination portion for determining whether or not the non-use joint connection portion is in a joint connection state, and the determination portion And a controller that determines which one of the first recovery tank and the second recovery tank to use based on the determination result.
The first high-pressure joint member corresponds to the second high-pressure joint member of the high-pressure hose, and the first low-pressure joint member corresponds to the second low-pressure joint member of the low-pressure hose. A distinguishable corresponding hose identification means is provided to the high pressure hose, the first high pressure joint member, the low pressure hose, and the first low pressure joint member.

  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 possible to prevent the different types of refrigerants from being mixed by reliably using the recovery tank to be used.

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 block diagram which shows a 1st refrigerant | coolant operation | work preparation state. It is a block diagram which shows a 2nd refrigerant | coolant operation | work preparation state. It is a principal part enlarged view which shows other embodiment, Comprising: (a) is a principal part enlarged view for demonstrating a 2nd refrigerant | coolant work preparation state, (b) is for demonstrating a 1st refrigerant | coolant work preparation state. FIG. It is a block diagram which shows other embodiment and shows a 1st refrigerant | coolant operation | work preparation state. It is a block diagram which shows other embodiment and shows a 2nd refrigerant | coolant operation | work preparation state.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIGS. 1, 2, and 16, the fluid recovery / regeneration / filling device according to the present invention is detachable from a high pressure service valve Sa of a vehicle air conditioner S that is prefilled with a first refrigerant. A first high-pressure hose 1A having a joint member 10A on the tip side, a first low-pressure hose 2A having a first low-pressure joint member 20A detachably attached to the low-pressure service valve Sb of the vehicle air conditioner S, and a vehicle And a first recovery tank Ta for storing the first refrigerant recovered from the air conditioner S.

Further, as shown in FIGS. 1, 9 and 17, a second high pressure joint member 10 </ b> B 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. A second high pressure hose 1B having a second low pressure joint member 20B detachably attached to a low pressure service valve Sb 'of the other vehicle air conditioner S', A second recovery tank Tb for storing the second refrigerant recovered from the vehicle air conditioner 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 includes a high-pressure connection member 91 and a low-pressure connection member 92 that protrude outward from the main body casing 90.
The high-voltage connecting member 91 has a base end fixed to the main body casing 90 and connected to the piping circuit portion 80 in the main body casing 90, a base end connected to the high-pressure connecting unit 91c, and a tip connected to the high-pressure connection 91c. And a high-pressure connection hose 91b connected to the tool 91a.
The low pressure connecting member 92 has a base end fixed to the main body casing 90 and connected to the piping circuit portion 80 in the main body casing 90, and a base end connected to the low pressure connecting member 92c and a tip connected to the low pressure connection. And a low-pressure connection hose 92b connected to the tool 92a.

The first and second high-pressure hoses 1A and 1B (hereinafter sometimes referred to as the high-pressure hose 1) are detachably attached to the high-pressure connector 91a of the high-pressure connecting member 91 on the base end side. Connecting members 11A and 11B are provided.
The high-pressure coupler 91a and the first and second high-pressure coupling members 11A and 11B are composed of plug-and-connect type male and female joint units, also called one-touch joints and quick joints. The first and second high pressure connecting members 11A and 11B are male and female other side joints (male and female other couplers).

The first and second low pressure hoses 2A and 2B (hereinafter sometimes referred to as the low pressure hose 2) are detachably attached to the low pressure connector 92a of the low pressure connection member 92 at the base end side. Connecting members 21A and 21B are provided.
The low-pressure coupler 92a and the first and second low-pressure coupling members 21A and 21B are configured by plug-and-connect 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 female 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 connection members 91 and 92 (the high-voltage connection member 91 and the low-voltage connection member 92) of the main body 9 are detachably provided.
The first hose unit Ya or the second hose unit Yb is selected and connected to the high pressure connecting member 91 and the low pressure connecting member 92 of the apparatus main body 9 so as to communicate with the piping circuit section 80 on the apparatus main body 9 side. ing.
That is, in the apparatus main body 9, the first high pressure hose 1A and the second high pressure hose 1B are selectively connected (the one selected between the first high pressure hose 1A and the second high pressure hose 1B). A possible high-pressure connecting member 91 and a low-pressure connecting member 92 to which the first low-pressure hose 2A and the second low-pressure hose 2B can be selectively connected are provided.

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

  As shown in FIGS. 16 and 17, the apparatus main body 9 includes a first unused joint connecting portion 3A to which the first high-pressure joint member 10A can be connected and separated (detachable), and a first unused joint connection. The first judgment part 4A for judging whether or not the joint state in which the first high pressure joint member 10A is connected to the part 3A and the second high pressure joint member 10B can be connected / separated (detachable). 2 and a second determination unit 4B for determining whether or not the second high-pressure joint member 10B is connected to the second non-use joint connection unit 3B. Yes.

The first unused joint connecting portion 3A has the same joint standard (nominal diameter size and detachable structure of the insertion / removal portion) as the high-pressure service valve Sa of the vehicle air conditioner S.
The second unused joint connecting portion 3B has the same joint standard (nominal diameter size of the insertion / extraction portion and detachable structure) as the high-pressure service valve Sa ′ of another vehicle air conditioner S ′.
That is, the second hose unit Yb cannot be structurally connected to the first unused joint connection portion 3A, and the first hose unit Ya cannot be structurally connected to the second unused joint connection portion 3B.

The first and second determination units 4A and 4B are limit switches, and thin rod-like detectors are inserted through the cylindrical first and second non-use joint connection portions 3A and 3B.
The first and second determination parts 4A and 4B are used for releasing the other-side joint check valve inside the first and second high pressure joint members 10A and 10B connected to the first and second unused joint connection parts 3A and 3B. The bar-shaped projecting portion presses the detector to transmit an electrical signal (ON-OFF signal).
The first and second determination units 4A and 4B are not limited to limit switches, and may determine (detect) whether or not a joint is connected and transmit an electrical signal to the control unit. An electrical detector (determination device) such as a proximity sensor or a magnetic sensor may be used.

Although not shown, the first unused joint connecting portion 3A is provided so as to be connectable and separable from the first low pressure joint member 20A, and the first determination portion 4A is connected to the first unused joint connecting portion 3A. The joint member 20A may be provided so as to determine whether or not it is in a joint connection state. In this case, the first unused joint connecting portion 3A has the same joint standard as the low-pressure service valve Sb of the vehicle air conditioner S.
Alternatively, two first non-use joint connecting portions 3A are provided so that both the first high-pressure joint member 10A and the first low-pressure joint member 20A can be connected and separated, and the first determination unit 4A is provided with the first non-use joint portion 1A. You may provide so that it may be determined whether it is the joint connection state to which both the 1st high voltage | pressure coupling member 10A and the 1st low voltage | pressure coupling member 20A were connected to the used coupling connection part 3A.
Further, the second unused joint connecting portion 3B is provided so as to be connectable and separable from the second low pressure joint member 20B, and the second determination portion 4B is provided in the second unused joint connecting portion 3B. You may provide so that it may determine whether it is a joint connection state. In this case, the second unused joint connecting portion 3B has the same joint standard as the low-pressure service valve Sb ′ of another vehicle air conditioner S ′.
Alternatively, two second non-use joint connecting portions 3B are provided so that both the second high-pressure joint member 10B and the second low-pressure joint member 20B can be connected / separated, and the second determination portion 4B is provided with the second non-use joint portion 2B. You may provide in the use joint connection part 3B so that it may be determined whether both the 2nd high voltage | pressure joint member 10B and the 2nd low voltage | pressure joint member 20B are a joint connection state.

  Further, a corresponding hose identifying means that makes it possible to determine that the high pressure hose 1 corresponds to the high pressure connection member 91 and to determine that the low pressure hose 2 corresponds to the low pressure connection member 92 is provided with the high pressure connection member 91. And the high pressure hose 1, the low pressure connection member 92, and the low pressure hose 2.

The corresponding hose identification means gives a first identification to the high-pressure connection member 91 (part or all) and the high-pressure hose 1 (part or all) and also includes the low-pressure connection member 92 (part or all). ) And the low-pressure hose 2 (a part or all of them) are provided with a second identification display different from the first identification display, and can be discriminated (identified) visually.
The identification display means expressing the color, pattern, character, symbol or the like so that the identification (discrimination) can be made by visual recognition.
For example, a hose material whose surface is red (system) is used for the high-pressure connection hose 91 b of the high-pressure connection member 91 and the hose portion of the high-pressure hose 1. A blue (system) hose material is used for the low pressure connection hose 92b of the low pressure connection member 92 and the hose portion of the low pressure hose 2. In other words, identification display is performed with colors (material colors), and visual discrimination is possible.
Alternatively, the plating color and material color of the high-pressure connector 91a and the first and second high-pressure connection members 11A and 11B are set as the first identification display, and the low-pressure connector 92a and the first and second low-pressure connection members The plating color and material color of 21A and 21B can be discriminated as the second identification display.

  As another example of the corresponding hose identification means, the high-pressure connector 91a and the high-pressure connection member 11 (the first and second high-pressure connection members 11A and 11B) of the high-pressure hose 1 are connected to the first connection joint. It is configured to be connectable and separable with standards. In addition, the low-pressure connector 92a and the low-pressure joint member 20 of the low-pressure hose 2 (first and second low-pressure joint members 21A and 21B) are different from the first joint standard for connection. Therefore, it is possible to make a determination based on whether or not connection is possible due to a difference in joint standards.

  As shown in FIG. 2, the piping circuit section 80 includes a high-pressure connecting member 91 (a base end side of the high-pressure hose 1) and a first piping section 81 to which one end side is connected, and a low-pressure connecting member 92 (the low-pressure hose 2 A second piping part 82 to which one end side is connected to the base end side, and a joining pipe part in which one end side is connected to the other end side of the first piping part 81 and the second piping part 82 at the joining connecting part Qa. 83 is connected to the other end side of the merging pipe portion 83 via a connection check valve Ba and connected to the inflow side of the first recovery tank Ta and the second recovery tank Tb so as to be able to communicate with each other. The first oil supply piping portion 86 having a first connecting port portion 96 to which the portion 84 and the first oil can J1 can be connected at the distal end side and the proximal end side connected to the merging piping portion 83 at the first merging portion Q1. And a second connecting port 97 to which the second oil can J2 can be connected at the distal end and the proximal end merges at the second merging 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 by the oil separator 84a. This is a piping circuit for liquefying the separated first refrigerant and sending it to the first recovery tank Ta, and as shown in FIG. 9, mixed with oil (refrigeration oil) recovered from another vehicle air conditioner S ′. This is a piping circuit for separating the second refrigerant into oil and second refrigerant by the oil separator 84a, liquefying the second refrigerant from which the oil has been separated, and sending it to the second recovery tank Tb. That is, the first recovery tank Ta and the second recovery tank Tb are connected in parallel to the recovery / regeneration piping circuit unit 84.

  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 to the first pipe 81 in such a manner that the tip of the common pipe 70 can communicate between the connection with the high pressure connection member 91 and the first solenoid valve V1. ) V19 and a check valve Bb for liquefied refrigerant are 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, the first high pressure hose 1A is connected to the high pressure connection member 91, and the first low pressure hose 2A is connected to the low pressure connection member 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. Further, although not shown in FIGS. 2 to 8 and 15, as shown in FIG. 16, the second high-pressure joint member 10B of the second hose unit Yb is connected to the second non-use joint connecting portion 3B. The first refrigerant work preparation state is set.

Then, it is determined that the first determination unit 4A is not in the joint connection state (non-joint connection state), the second determination unit 4B is determined (detected) as being in the joint connection state, and a detection signal (unused joint confirmation electric signal) Is transmitted to the control unit.
The control unit recognizes that the second hose unit Yb is not in use based on the determination results (the presence or absence of an electrical signal) of the first determination unit 4A and the second determination unit 4B, and the first hose unit Ya Is used, and it is determined that preparation for performing a process (first refrigerant operation) related to the vehicle air conditioner S and the first refrigerant corresponding to the first hose unit Ya is performed, and the first recovery tank Ta should be used. decide. In addition, the start (operation start) of the first refrigerant work is permitted.
As described above, the control unit automatically determines which one of the first recovery tank Ta and the second recovery tank Tb should be used, and prevents an erroneous operation (erroneous selection) by the user.
That is, during the first refrigerant operation (process), at least one of the second high-pressure joint member 10B and the second low-pressure joint member 20B of the second hose unit Yb that is not used is used as the second non-use joint connection portion 3B. Connected.

  As shown in FIG. 2, the control unit opens the first, second, third, ninth, and sixteenth solenoid valves V1, V2, V3, V9, and V16 to open the fourth, fifth, sixth, and sixth solenoid valves. 7th, 8th, 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. That is, it is determined to use the first recovery tank Ta. 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 CFC 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. And a control part makes the compressor C a stop state, and operates the pump P for vacuuming.

  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. 1 Flows through the low-pressure hose 2A and the second piping portion 82 toward the confluence 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 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 in the drawings, when the second oil can J2 filled with the same type of oil as the first oil is connected to the second connection port 97, the control unit controls the first, third, and seventh. Solenoid valves V1, V3 and V7 are opened, and second, fourth, fifth, sixth, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth・ 17th, 18th and 19th solenoid valves 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. Further, as shown in FIG. 16, the second high-pressure joint member 10B of the second hose unit Yb that is not used is connected to the second unused joint connection portion 3B. As shown in FIG. 4, based on the first and second determination units 4A and 4B, the control unit opens the tenth and nineteenth electromagnetic valves V10 and V19, and the first, second, third, fourth, 5th, 6th, 7th, 8th, 9th, 11th, 12th, 13th, 14th, 15th, 16th, 17th and 18th solenoid valves V1, V2, V3, V4, V5 V6, V7, V8, V9, V11, V12, V13, V14, V15, V16, V17, and V18 are closed. That is, it is determined to use the first recovery tank Ta.

  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. As shown in FIG. 16, the second high-pressure joint member 10B of the unused second hose unit Yb is connected to the second unused joint connection portion 3B. 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. That is, it is determined to use the first recovery tank Ta. 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 oil (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. , Joint 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, and the second high pressure hose 1B is connected to the high pressure connection member 91 and the second low pressure hose 2B is connected to the low pressure connection member 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 ′. Further, although not shown in FIGS. 9 to 14, as shown in FIG. 17, the second refrigerant is connected by connecting the first high pressure joint member 10A of the first hose unit Ya to the first non-use joint connecting portion 3A. Let it be a work preparation state (another vehicle air conditioner work preparation state).

Then, the first determination unit 4A determines (detects) that it is in the joint connection state, and transmits a detection signal (unused joint confirmation electric signal) to the control unit. It determines with the 2nd determination part 4B not being a joint connection state. The control unit recognizes that the first hose unit Ya is not in use based on the determination results (the presence or absence of an electrical signal) of the first determination unit 4A and the second determination unit 4B, and the second hose unit Yb Is used to perform a second refrigerant work (another vehicle air conditioner work) related to another vehicle air conditioner S ′ corresponding to the second hose unit Yb and a second refrigerant of a type different from the first refrigerant. It is determined that preparation has been made, and it is determined that the second recovery tank Tb should be used. Also, the start of the second refrigerant work is permitted.
That is, during the second refrigerant operation (process), at least one of the first high-pressure joint member 10A and the first low-pressure joint member 20A of the unused first hose unit Ya is used as the first unused joint connection portion 3A. Connected.

  As shown in FIG. 9, the control unit opens the first, second, third, thirteenth, and sixteenth solenoid valves V1, V2, V3, V13, and V16 to open the fourth, fifth, sixth, and fourth. 7th, 8th, 9th, 10th, 11th, 12th, 14th, 15th, 17th, 18th, 19th solenoid valves V4, V5, V6, V7, V8, V9, V10, V11, V12 , V14, V15, V17, V18, V19 are closed. That is, it is determined to use the second recovery tank Tb. 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 ′. Further, the second oil can J2 filled with a second oil of a different type from the first oil is connected to one or both of the first connection port portion 96 and the second connection port portion 97. When the second oil can J2 is connected to the first connection port 96, the control unit opens the first and sixth electromagnetic valves V1 and V6 to open and close the electromagnetic valve V. 4th, 5th, 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. The second oil flows through the first oil supply piping section 86, from the second merging section Q2 to the merging and coupling section Qa, the first piping section 81, and the first high-pressure hose 1 to the high-pressure service valve Sa ′ side. Filled from.
Further, when the second oil can J2 is also connected to the second connection port 97, the control unit also opens the seventh electromagnetic valve V7, and the second oil flows to the second oil supply piping unit 87 as well.

  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 ′. Further, as shown in FIG. 17, the first high-pressure joint member 10A of the first hose unit Ya that is not used is connected to the first non-use joint connection portion 3A. 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. That is, it is determined to use the second recovery tank Tb.

  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. 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, although not shown, modified examples of the high-pressure connection member 91 and the low-voltage connection member 92 will be described.
The high-pressure connecting member 91 of the modified example is fixed to the main body casing 90 and connected to the piping circuit portion 80 in the main body casing 90, and the proximal end side of the high-pressure hose 1 (the selected first and second high-pressure connecting members 11A 11B) and a high-pressure coupling 91a that can be connected and separated (the high-pressure connection hose 91b is omitted). Further, the low-pressure connecting member 92 of the modified example is fixed to the main body casing 90 and connected to the piping circuit portion 80 in the main body casing 90, and at the base end side of the low-pressure hose 2 (selected first and second low-pressure members). The connecting member 21A, 21B) is composed of a low-pressure connector 92a that can be connected and separated (the low-pressure connecting hose 92b is omitted). Other configurations are the same as those of the above-described embodiment.

Next, in another embodiment shown in FIG. 18 to FIG. 20, the first high-pressure joint member 10A that is detachable from the high-pressure service valve Sa of the vehicle air conditioner S and the low-pressure service valve Sb of the vehicle air-conditioner S are used. A first low-pressure joint member 20A having a detachable tip side.
And it has the 2nd high pressure joint member 10B which can be attached or detached to high pressure service valve Sa 'of another vehicle air conditioner S' at the front-end | tip, and the base end is the piping circuit part by the side of the apparatus main body 9 via the high pressure connection member 91 80 has a high pressure hose 1 connected to 80 and a low pressure service valve Sb ′ of another vehicle air conditioner S ′, and a second low pressure joint member 20B that is detachable. A low pressure hose 2 connected to the piping circuit section 80 on the main body 9 side.
The high-pressure connecting member 91 is composed of a high-pressure connecting member 91c made of a piping member that can be fixedly connected to the base end of the high-pressure hose 1. The low-pressure connecting member 92 communicates with the base end of the low-pressure hose 2 And a low-pressure connector 92c made of a piping member that can be fixed.
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, and the first low pressure is attached to the second low pressure joint member 20B of the low pressure hose 2. The base end side of the joint member 20A for use is detachably attached.

The first high-pressure joint member 10A has a high-pressure joint body a that is detachably attached to the high-pressure service valve Sa of the vehicle air conditioner S on the distal end side.
The first high-pressure joint member 10A has a flow passage for communicating with the second high-pressure joint member 10B on the base end side, and a joint structure that is detachable from the second high-pressure joint member 10B on the outer peripheral side. The high-pressure adapter member 7 is integrally or detachably attached to the base end portion of the high-pressure joint body a.
The base end side of the first high-pressure joint member 10A (base end portion of the high-pressure adapter member 7) is detachably provided on the second high-pressure joint member 10B, and the high-pressure service valve Sa of another vehicle air conditioner S ′. 'And the joint standard (nominal diameter dimension of the insertion / extraction part and the detachable structure) are the same. Specifically, it is a male coupler.

The first low-pressure joint member 20A has a low-pressure joint body b that is detachably attached to the low-pressure service valve Sb of the vehicle air conditioner S on the distal end side.
The first low-pressure joint member 20A has a flow passage for communicating with the second low-pressure joint member 20B on the proximal end side and a joint structure that is detachable from the second low-pressure joint member 20B on the outer peripheral side. The low-pressure adapter member 8 is integrally or detachably attached to the low-pressure joint body b.
The base end side of the first low-pressure joint member 20A (base end portion of the low-pressure adapter member 8) is detachably provided on the second low-pressure joint member 20B, and the low-pressure service valve Sb of another vehicle air conditioner S ′. 'And the joint standard (nominal diameter dimension of the insertion / extraction part and the detachable structure) are the same. Specifically, it is a male coupler.

As shown in FIGS. 19 and 20, the apparatus main body 9 includes an unused joint connecting portion 3 to which the distal end side (high pressure joint main body a) of the first high-pressure joint member 10A can be connected and separated, and an unused joint. A determination unit 4 for determining whether or not the connection unit 3 is in the joint connection state, and the control unit determines which of the first recovery tank Ta and the second recovery tank Tb based on the determination result of the determination unit 4. It is configured to determine whether to use it.
Note that the unused joint connecting portion 3 may be configured such that the distal end side (low pressure joint body b) of the first low pressure joint member 20A can be connected and disconnected. Alternatively, the unused joint connecting portion 3 may be provided in such a manner that the tip ends of both the first high-pressure joint member 10A and the first low-pressure joint member 20A can be connected and separated.

Further, the first high pressure joint member 10A corresponds to the second high pressure joint member 10B of the high pressure hose 1, and the first low pressure joint member 20A corresponds to the second low pressure joint member 20B of the low pressure hose 2. Corresponding hose identification means that can be discriminated depending on whether it is connectable or visually (color) can be identified as high-pressure hose 1, first high-pressure joint member 10A, low-pressure hose 2 and first low-pressure joint member 20A. Has been granted.
That is, the joint standard between the second high-pressure joint member 10B and the base end side (high-pressure adapter member 7) of the first high-pressure joint member 10A, the second low-pressure joint member 20B, and the first low-pressure joint member 20A. Since the joint standard with the base end (low-pressure adapter member 8) is different, a corresponding hose identification means that can be discriminated depending on whether or not it is connectable is provided (although there is no mistake in attaching), and further, connection work In order to make it easy and quick, it is preferable to provide it so that it can be visually discriminated by a color such as a material color or a plating color.
When the high-pressure joint body a and the high-pressure adapter member 7 are detachably provided, and the low-pressure joint body b and the low-pressure adapter member 8 are detachably provided, the high-pressure adapter member 7 corresponds to the high-pressure joint body a. In addition, the corresponding high pressure joint body a and the high pressure adapter can be identified by whether the low pressure adapter body 8 corresponds to the low pressure joint body b. This is applied to the member 7, the low pressure joint body b, and the low pressure adapter member 8.

When working on the vehicle air conditioner S filled with the first refrigerant, the first high-pressure joint member 10A is connected to the second high-pressure joint member 10B as shown in FIGS. Then, the first refrigerant work preparation state in which the first low-pressure joint member 20A is connected to the second low-pressure joint member 20B is set.
Then, it determines with the determination part 4 not being a joint connection state. The control unit recognizes that the first high-pressure joint member 10A and the first low-pressure joint member 20A are in use based on the determination result (no electrical signal) of the determination unit 4, and the vehicle air conditioner S It is determined that the first refrigerant work relating to the first refrigerant is ready, and it is determined that the first recovery tank Ta should be used.
Then, similarly to the above-described embodiment, the first refrigerant operation such as the first refrigerant recovery process, the oil filling process, the first regenerated liquefied refrigerant filling process, and each cleaning process is performed.

When working on another vehicle air conditioner S ′ filled with the second refrigerant, as shown in FIGS. 18A and 20, the second high-pressure joint member 10B is used for the first high-pressure use. The joint member 10A is disengaged, the first low-pressure joint member 20A is detached from the second low-pressure joint member 20B, and the first high-pressure joint member 10A is connected to the unused joint connection portion 3 to perform the second refrigerant operation. Prepared. Then, the determination part 4 determines with a joint connection state. The control unit recognizes that the first high-pressure joint member 10A and the first low-pressure joint member 20A are not in use based on the determination result of the determination unit 4 (there is an electrical signal). It is determined that preparations for performing the second refrigerant work on the device S ′ and the second refrigerant are made, and it is determined that the second recovery tank Tb should be used.
Then, similarly to the above-described embodiment, the second refrigerant operation such as the second refrigerant recovery process, the oil filling process, the second regenerated liquefied refrigerant filling process, and each cleaning process is performed. Other configurations and operational effects are the same as those of the embodiment described with reference to FIGS.

  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.

  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.

  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. And a second recovery tank Tb for storing the second refrigerant recovered from the vehicle, and a first high-pressure joint member 10A that is detachably attached to the high-pressure service valve Sa of the vehicle air conditioner S. A first hose unit Ya comprising: a first high pressure hose 1A having a first low 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; A second high-pressure hose 1B having a second high-pressure joint member 10B that is detachable from a high-pressure service valve Sa ′ of another vehicle air conditioner S ′ and a low-pressure service valve Sb ′ of another vehicle air-conditioner S ′. Flexible first A second hose unit Yb having a second low-pressure hose 2B having a low-pressure joint member 20B, and the apparatus body 9 includes a first high-pressure joint member 10A and a first low-pressure joint member. The first unused joint connecting portion 3A, to which at least one of 20A can be connected / separated, the first determining portion 4A for determining whether or not the first unused joint connecting portion 3A is in the joint connected state, and the second high pressure For determining whether or not the second unused joint connecting portion 3B and the second unused joint connecting portion 3B can be connected / separated to at least one of the joint member 10B and the second low pressure joint member 20B. The second determination unit 4B, and a control unit that determines which of the first recovery tank Ta and the second recovery tank Tb to use based on the determination results of the first determination unit 4A and the second determination unit 4B. To prevent different types of refrigerant from mixing It is possible to 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 possible to prevent different types of refrigerants from being mixed in the hose units Ya and Yb and in the recovery tanks Ta and Tb, and appropriate refrigerant performance can be obtained. Operation mistakes by the user can be prevented, the recovery tanks Ta and Tb to be used are reliably selected, and the refrigerant can be recovered, regenerated, filled and washed appropriately.

  The apparatus main body 9 includes a piping circuit unit 80 having a first recovery tank Ta and a second recovery tank Tb, a first high-pressure hose 1A and a second high-pressure hose 1B connected to the piping circuit unit 80. A high-pressure connection member 91 that can be selectively connected; and a low-pressure connection member 92 that is connected to the piping circuit section 80 and that can selectively connect the first low-pressure hose 2A and the second low-pressure hose 2B. It is possible to determine that the first high pressure hose 1A and the second high pressure hose 1B correspond to the high pressure connection member 91 and the first low pressure hose 2A and the second low pressure hose 2B correspond to the low pressure connection member 92. Because the corresponding hose identification means is applied to the high pressure connection member 91, the first high pressure hose 1A, the second high pressure hose 1B, the low pressure connection member 92, the first low pressure hose 2A, and the second low pressure hose 2B. Main body side connecting members 91, 92 and high pressure hose 1 In addition, it is possible to prevent misconnection with the low-pressure hose 2 and to perform a quick connection operation.

  Further, a first recovery tank Ta for storing the first refrigerant recovered from the vehicle air conditioner S and a second recovery for storing the second refrigerant recovered from another vehicle air conditioner S ′ different from the vehicle air conditioner S. A device main body 9 having a tank Tb, and a first high-pressure joint member 10A detachably attached to the high-pressure service valve Sa of the vehicle air conditioner S and detachable to the low-pressure service valve Sb of the vehicle air-conditioner S. A first low-pressure joint member 20A, and a second high-pressure joint member 10B that is detachable from a high-pressure service valve Sa ′ of another vehicle air conditioner S ′. The high-pressure hose 1 connected to the low-pressure service valve Sb ′ of another vehicle air conditioner S ′ and the second low-pressure joint member 20B that can be attached to and detached from the high-pressure hose 1 are connected to the main body 9 side. 2 and high The first high pressure joint member 10A is detachably configured on the second high pressure joint member 10B of the hose 1 and the first low pressure joint member 20A is detachable on the second low pressure joint member 20B of the low pressure hose 2. The apparatus main body 9 includes an unused joint connecting portion 3 to which at least one of the first high pressure joint member 10A and the first low pressure joint member 20A can be connected / separated, and an unused joint connecting portion 3 to the joint connection. A determination unit 4 for determining whether the state is a state, and a control unit for determining which of the first recovery tank Ta and the second recovery tank Tb to use based on the determination result of the determination unit 4 Therefore, it is possible to cope with both the vehicle air conditioner S filled with the first refrigerant and the other vehicle air conditioner S ′ filled with the second refrigerant while having a simple configuration. 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). Operation mistakes by the user can be prevented, the recovery tanks Ta and Tb to be used are reliably selected, and the refrigerant can be recovered, regenerated, filled and washed appropriately.

  Further, the first high pressure joint member 10A corresponds to the second high pressure joint member 10B of the high pressure hose 1, and the first low pressure joint member 20A corresponds to the second low pressure joint member 20B of the low pressure hose 2. Is provided to the high pressure hose 1, the first high pressure joint member 10A, the low pressure hose 2 and the first low pressure joint member 20A. Connection (connection) work can be easily performed.

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 3 Non-use joint connection part 3A 1st non-use joint connection part 3B 2nd non-use Joint joint used
4 Judgment Unit 4A First Judgment Unit 4B Second Judgment Unit 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
80 Piping circuit
91 High pressure connection member
92 Low pressure connecting member 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 First 2 hose unit

Claims (4)

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 device main body (9),
Further, a first high pressure hose (1A) having a first high pressure joint member (10A) detachably attached to the high pressure service valve (Sa) of the vehicle air conditioner (S), and a low pressure 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 the service valve (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'),
Comprising
The apparatus main body (9) includes a first unused joint connection portion (3A) to which at least one of the first high-pressure joint member (10A) and the first low-pressure joint member (20A) can be connected and separated; A first determination part (4A) for determining whether or not the first unused joint connection part (3A) is in a joint connection state, the second high-pressure joint member (10B), and the second low-pressure joint member; A second determination for determining whether or not the second unused joint connecting portion (3B) to which at least one of (20B) can be connected / separated and the second unused joint connecting portion (3B) is in the joint connected state. The first recovery tank (Ta) and the second recovery tank (Tb) are used based on the determination results of the unit (4B) and the first determination unit (4A) and the second determination unit (4B). And a fluid recovery / regeneration / filling device characterized by comprising: . The apparatus main body (9) is connected to the piping circuit unit (80) having the first recovery tank (Ta) and the second recovery tank (Tb), and to the piping circuit unit (80) and the first circuit tank (80). The high pressure hose (1A) and the second high pressure hose (1B) can be selectively connected to the high pressure connection member (91), and the first low pressure hose is connected to the piping circuit section (80). (2A) and the second low-pressure hose (2B) include a low-pressure connection member (92) that can be selectively connected,
The high pressure connecting member (91) corresponds to the first high pressure hose (1A) and the second high pressure hose (1B), and the low pressure connecting member (92) corresponds to the first low pressure hose (2A). Corresponding hose identifying means capable of determining that the second low-pressure hose (2B) corresponds to the high-pressure connecting member (91), the first high-pressure hose (1A), and the second high-pressure hose (1B). ), The low-pressure connecting member (92), the first low-pressure hose (2A), and the second low-pressure hose (2B). 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 device main body (9),
Furthermore, 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 a first high-pressure service valve (Sb) that is detachable to the low-pressure service valve (Sb) of the vehicle air conditioner (S). 1 low pressure 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 configured 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). The first low-pressure joint member (20A) is detachably configured on (20B),
The apparatus main body (9) includes a non-use joint connecting portion (3) to which at least one of the first high-pressure joint member (10A) and the first low-pressure joint member (20A) can be connected and separated, and the non-use joint portion. A determination part (4) for determining whether or not the used joint connection part (3) is in the joint connection state, and the first recovery tank (Ta) and the second based on the determination result of the determination part (4) And a control unit that determines which one of the recovery tanks (Tb) to use.   The first high pressure joint member (10A) corresponds to the second high pressure joint member (10B) of the high pressure hose (1) and the second low pressure joint member (20B of the low pressure hose (2)). ), The corresponding high pressure hose (1A), the first high pressure joint member (10A), and the low pressure hose ( The fluid recovery / regeneration / filling device according to claim 3, which is applied to 2) and the first low-pressure joint member (20A).

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