JP2001091112A - Connecting device for installing air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting device for installing air conditioner which allows a substituting gas to be recovered easily after the air in an indoor heat exchanger or connecting pipe is once replaced with the substituting gas. SOLUTION: A connecting device for installing air conditioner is provided with a first joint port which is connected to the refrigerant charge port side of a valve element for connecting piping provided on the outdoor machine of an air conditioner and a second joint port connected to a container containing a substituting gas for installing an air conditioner and makes the substituting gas in the container to flow in the valve element through the refrigerant charge port. The second joint port is provided with a connecting means which connects the container containing the substituting gas and an opening means which opens the container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device for an air conditioner used for installing an air conditioner for connecting an indoor unit and an outdoor unit with a connection pipe.

[0002]

2. Description of the Related Art A refrigeration cycle used in an air conditioner is constructed by connecting a refrigerant flow control unit having an expansion mechanism such as a compressor, a heat exchanger, a capillary tube or an expansion valve by piping such as a copper pipe. And a fluid filled in the refrigeration cycle, such as a refrigerant and a lubricating oil composition. In a separate type air conditioner, an outdoor unit having a compressor and a heat exchanger and an indoor unit having a heat exchanger installed at a location where refrigeration and air conditioning are performed are connected by a connection pipe such as a copper pipe. Is done. In such a refrigeration cycle, the outdoor unit is filled with a part or all of the refrigerant and the lubricating oil composition in advance, the valve of the outdoor unit is closed, and the refrigeration is connected to the indoor unit using a connection pipe during construction. It is common to form a cycle. By simply connecting the pipes in this manner, air remains in the indoor unit and the connection pipe. In order to remove this air, a vacuum pump is connected to the refrigerant charge port provided on the valve of the outdoor unit, and after removing the air, the valve is opened and the indoor unit and the outdoor unit are connected to form a refrigeration system. Had been taken. Also, as a simple construction method, at the time of construction, open the valve of the outdoor unit and allow the refrigerant in the outdoor unit to flow to the connection pipe and the indoor unit,
The gas in the indoor unit and the connection pipe is replaced by discharging the refrigerant containing air from the refrigerant charge port provided in the valve of the other outdoor unit or the gap formed by relaxing the connection of the connection port of the valve. Operation was performed. These methods are disclosed in
JP-70953A discloses a method of manufacturing a refrigeration cycle without using a vacuum pump by replacing the inside of the refrigeration cycle with oxygen, filling the refrigerant, and fixing oxygen with an oxygen fixing agent provided in the refrigeration cycle. Is disclosed. Also, in Japanese Patent Application Laid-Open No. 7-159004, one of a condenser or an evaporator or one of a condenser and an evaporator among expansion mechanisms such as a refrigerating compressor, a condenser, a capillary tube or an expansion valve, and an evaporator. In a separate type air conditioner, in which the expansion mechanism is separated and connected by piping, moisture in the air,
It discloses a method of enclosing a substance capable of absorbing two or more of oxygen, nitrogen, carbon dioxide, and the like. In addition, Japanese Patent Application Laid-Open
Japanese Patent No. 269994 discloses a refrigeration cycle in which an oxygen absorbent is provided in a refrigerant circulation system. Also, Japanese Patent Application Laid-Open No. 9-29
Japanese Patent No. 2068 discloses a method of removing air in a pipe and an indoor unit by disposing an air absorbent, filling carbon dioxide in the pipe and the indoor unit, and absorbing carbon dioxide in the pipe and the indoor unit with the carbon dioxide absorbent to form a vacuum. Is disclosed.

[0003]

The air remaining in the refrigeration cycle reduces the refrigeration capacity as non-condensable gas,
Oxygen and moisture promote the deterioration of refrigeration oil and iron inside the refrigeration cycle and must be removed without fail. Among the methods described in the prior art, the method of evacuating with a vacuum pump is general, but a power source must be available to operate the vacuum pump at the construction site, and it is difficult to use it on a roof etc. It could not be called a simple method. In addition, in the method of replacing air with a refrigerant, it is inevitable to release the refrigerant, CFC, to the atmosphere, which is not preferable from the viewpoint of global environment, such as global warming. Further, as for a method of recovering the replacement gas after the air in the indoor heat exchanger or the connection pipe is once replaced with the replacement gas, a simple device for recovering the replacement gas has not been proposed.

Accordingly, the present invention provides a connection device for constructing an air conditioner that can easily recover the replacement gas after the air in the indoor heat exchanger or the connection pipe is once replaced with the replacement gas. It is intended to provide.

[0005]

According to a first aspect of the present invention, there is provided a connection device for air conditioner construction according to the present invention, which is connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of the air conditioner. A first connection port, and a second connection port connected to the replacement gas filling container for air conditioner installation, and the replacement gas in the replacement gas filling container flows from the refrigerant charge port. A connection device for connecting the replacement gas-filled container, and an opening means for opening the replacement gas-filled container, wherein the second connection port includes: It is characterized by being. Claim 2
The connection device for construction of an air conditioner according to the present invention described above comprises a first connection port connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of the air conditioner, A second connection port that is connected to a replacement gas recovery container for a connection device for an air conditioner construction that absorbs replacement gas from the refrigerant charge port into the replacement gas recovery container. The second connection port is provided with connecting means for connecting the replacement gas recovery container and opening means for opening the replacement gas recovery container. The connection device for air conditioner installation according to the third aspect of the present invention is a first connection port connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of the air conditioner,
A second connection port connected to a replacement gas filling container and a replacement gas recovery container for air conditioner construction, and allowing the replacement gas in the replacement gas filling container to flow from the refrigerant charge port, Or a connection device for air conditioner construction to absorb the replacement gas from the refrigerant charge port into the replacement gas recovery container, wherein the second connection port,
It is characterized by comprising a connecting means for connecting the replacement gas filling container or the replacement gas collecting container, and an opening means for opening the replacement gas filling container or the replacement gas collecting container. The present invention described in claim 4 is the first invention.
The connecting device for air conditioner installation according to any one of claims 3 to 5, wherein the connecting means includes a male screw portion formed on an outer periphery of a base of the replacement gas filling container or the replacement gas recovery container. It is a female screw part to be fitted. According to a fifth aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects, the connection means has a threaded portion formed on an inner peripheral surface thereof, and It is a cap nut rotatably provided on the outer periphery of the mouth. According to a sixth aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects, the connecting means includes the replacement gas filling container or the replacement gas recovery. It is a ring member that comes into contact with the outer periphery of the base of the container. According to a seventh aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third or third aspects, the connecting means includes:
It is a male screw part to be fitted with a female screw part formed on the inner circumference of the opening side of the holder for holding the replacement gas filling container or the replacement gas recovery container. According to an eighth aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects, the connecting means includes the replacement gas filling container or the replacement gas recovery. It is a ring member that comes into contact with the inner circumference of the opening side of the holder that holds the container. According to a ninth aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects, the opening means has a through hole, and a sharp inclined surface at a tip end. Characterized in that it is a needle-shaped member formed with. According to a tenth aspect of the present invention, in the connection device for constructing an air conditioner according to any one of the first to third aspects, the opening means has a through hole, and the outer diameter of the connecting device is the same as that of the replacement. It is characterized in that it is a needle-shaped member smaller than the diameter of the thin film portion sealing the opening of the gas filling container or the replacement gas recovery container. According to an eleventh aspect of the present invention, in the connection device for constructing an air conditioner according to any one of the first to third aspects, the opening means includes:
It is formed of a needle-like member having a through-hole, and the passage cross-sectional area of the through-hole is larger than the minimum passage cross-sectional area of the passage other than the needle-like member. According to a twelfth aspect of the present invention, in the connection device for constructing an air conditioner according to any one of the first to third aspects, the opening means has a through hole and forms a slope at the tip. Needle-shaped member, and the inclined surface is disposed in the mouth of the replacement gas filling container or the replacement gas recovery container in a state where the replacement gas filling container or the replacement gas recovery container is connected. It is characterized by. According to a thirteenth aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects, the opening means comprises a needle-like member having a through hole. A seal member is arranged on the outer periphery of the shape member,
After the port of the replacement gas filling container or the replacement gas recovery container is sealed by the sealing member, the thin film portion sealing the port is opened by the needle-shaped member. According to a fourteenth aspect of the present invention, in the connection device for constructing an air conditioner according to any one of the first to third aspects, a connection between the replacement gas filling container or the replacement gas recovery container is provided. Arrange a sealing member to seal,
The seal member includes a material having elasticity. A connection device for construction of an air conditioner of the present invention according to claim 15 is a first connection port connected to a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of the air conditioner; A second connection port that is connected to a replacement gas filling container for machine installation, and a connection device for air conditioner construction that allows replacement gas in the replacement gas filling container to flow from the refrigerant charge port. Connecting means for connecting the refrigerant charge port to the first connection port;
Opening means for opening the refrigerant charge port. The air conditioner connection device of the present invention according to claim 16 is a first connection port connected to a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of the air conditioner, and an air conditioner. A second connection port connected to a replacement gas recovery container for machine installation, and a connection device for air conditioner construction for absorbing replacement gas from the refrigerant charge port into the replacement gas recovery container. The first connection port is provided with connecting means for connecting the refrigerant charge port and opening means for opening the refrigerant charge port. The connection device for air conditioner installation of the present invention according to claim 17 is a first connection port that is connected to a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of the air conditioner; A second connection port connected to a replacement gas filling container and a replacement gas recovery container for machine construction, and allowing the replacement gas in the replacement gas filling container to flow from the refrigerant charge port, or A connection device for connecting the coolant charge port to the first connection port, wherein the connection device connects the coolant charge port to the replacement gas recovery container. Opening means for opening the refrigerant charge port. The present invention according to claim 18 is a connection device for constructing an air conditioner according to any one of claims 15 to 17,
The opening means is a valve stem for pushing and opening a valve core in the refrigerant charge port. Claim 19
According to the present invention, in the connecting device for air conditioner construction according to claim 18, the valve core is moved by 1 mm or more by the valve stem. Claim 20
The invention described in claims 1 to 3 or claim 15
The connection device for air conditioner construction according to any one of claims 1 to 17, wherein the first connection port and the second connection port are formed by the same member without being connected by another member. It is characterized by having been done. Claim 2
According to a first aspect of the present invention, in the connection device for constructing an air conditioner according to the twentieth aspect, the first connection port and the second connection port are formed so as to be coaxially arranged. And According to a twenty-second aspect of the present invention, in the connection device for air conditioner construction according to any one of the first to third aspects or the fifteenth to seventeenth aspects, the first connection port is connected to the second connection port. The connection ports are characterized in that they are arranged at an angle so that their respective axial directions are different from each other. The present invention according to claim 23 is the invention according to claims 1 to 3.
Alternatively, in the connection device for air conditioner construction according to any one of claims 15 to 17, the first connection port and the second connection port are connected by a flexible connection portion. And The filling container of the present invention according to claim 24 is connected to the connecting device for constructing an air conditioner according to any one of claims 1, 3, 15, and 17, and is used for replacement gas or It is characterized by being filled with a refrigerant. The collection container of the present invention according to claim 25 is connected to the connecting device for air conditioner construction according to any one of claims 2, 3, 16, or 17, and is provided with a replacement gas or It is characterized by recovering the refrigerant. Claim 26
The method for constructing an air conditioner according to the present invention described above uses the connection device for constructing an air conditioner according to any one of claims 1 to 3, or claims 15 to 17, and uses the connection gas or the replacement gas. It is characterized by charging or collecting a refrigerant. The connection device for air conditioner installation of the present invention according to claim 27 includes a connection port connected to a replacement gas filling container for air conditioner installation, and the replacement gas in the replacement gas filling container. An air conditioner connection device that flows from a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of an air conditioner, wherein the connection port has a tip of the port of the replacement gas-filled container. A needle-shaped member that is opened by an inclined surface, the needle-shaped member has a through hole from the front end to the rear end and has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts, A gas passage communicating with the refrigerant charge port is provided, and a part of the gas communication passage is closed by an end surface of an outer periphery of the counterbore portion of the needle-shaped member. The connection device for air conditioner installation of the present invention according to claim 28 includes a connection port connected to a replacement gas filling container for air conditioner installation, and the replacement gas in the replacement gas filling container. An air conditioner connection device that flows from a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of an air conditioner, wherein the connection port has a tip of the port of the replacement gas-filled container. A needle-shaped member that is opened by an inclined surface, the needle-shaped member has a through hole from the front end to the rear end and has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts, A gas passage hole communicating with the refrigerant charge port is provided, and when the depth dimension of the gas passage hole is A and the cross-sectional area is B, A / B is 10 or more. The connecting device for air conditioner installation according to the present invention according to claim 29, further comprising a connection port connected to a replacement gas filling container for air conditioner installation, for connecting the replacement gas inside the replacement gas filling container. A replacement gas filling connection device that allows gas to flow from a refrigerant charge port of a pipe connection valve body provided in an outdoor unit of an air conditioner, and a connection port connected to a replacement gas recovery container for air conditioner construction. Having a replacement gas recovery connection device for absorbing replacement gas from the refrigerant charge port into the replacement gas recovery container,
The replacement gas recovery connection device may be connected to the replacement gas charging connection device. The connecting device for constructing an air conditioner of the present invention according to claim 30, further comprising a connection port connected to a replacement gas recovery container for constructing an air conditioner, wherein the replacement port is provided in the replacement gas recovery container. A replacement gas recovery connection device that allows gas to flow in from a refrigerant charge port of a pipe connection valve body provided in an outdoor unit of an air conditioner, and a connection port connected to a replacement gas filling container for air conditioner construction. A replacement gas filling connection device for absorbing the replacement gas from the refrigerant charge port into the replacement gas filling container, and the replacement gas filling connection device can be connected to the replacement gas recovery connection device. It is characterized by having a simple configuration. The connection device for air conditioner installation of the present invention according to claim 31 includes a connection port connected to a replacement gas filling container for air conditioner installation, and the replacement gas in the replacement gas filling container. An air conditioner connection device that flows from a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of an air conditioner, wherein the connection port has a tip of the port of the replacement gas-filled container. A needle-like member that is opened by an inclined surface, and a seal member that presses the needle-like member from the distal end side, wherein the inner peripheral diameter of a portion where the outer periphery of the seal member contacts the inner peripheral surface of the connection port, It is characterized in that the inner diameter is larger than the inner diameter of the connection port entrance, and the outer diameter of the seal member is larger than the inner diameter of the connection port entrance.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a connection device for air conditioner construction according to a first embodiment of the present invention, a connecting means for connecting a replacement gas filling container to a second connection port is provided. Opening means for opening the filling container. According to the present embodiment, the replacement gas-filled container can be opened by connecting the replacement gas-filled container to this connection device. Therefore, according to the present embodiment, the operation of causing the replacement gas in the replacement gas filling container to flow into the air conditioner can be performed only by connecting this connection device.
As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large cylinder having a valve, A single-use replacement gas-filled container without a valve can be used, and the workability of the air conditioner can be improved.

[0007] In a connection device for air conditioner construction according to a second embodiment of the present invention, a connecting means for connecting a replacement gas recovery container and an opening of the replacement gas recovery container are provided at the second connection port. Opening means. According to the present embodiment, the replacement gas recovery container can be opened simply by connecting the replacement gas recovery container to the connection device.
Therefore, according to the present embodiment, the operation of recovering the replacement gas from the air conditioner into the replacement gas recovery container can be performed only by connecting the connection device. As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large container having a valve, A single-use replacement gas recovery container without a valve can be used, and the workability of the air conditioner can be improved.

[0008] In a connection device for installing an air conditioner according to a third embodiment of the present invention, a connecting means for connecting a replacement gas filling container or a replacement gas recovery container to the second connection port is provided. Opening means for opening the gas filling container or the replacement gas recovery container. According to the present embodiment, it is possible to open the replacement gas filling device or the replacement gas recovery container simply by connecting the replacement gas filling device or the replacement gas recovery container to this connection device. Therefore, since both the replacement gas filling container and the replacement gas recovery container can be used, the operation of once replacing the air in the air conditioner with the replacement gas and then recovering the replacement gas is performed by this connection. It can be performed simply by using an apparatus. As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large container having a valve, A single-use replacement gas filling device or replacement gas recovery container without a valve can be used, and the workability of the air conditioner can be improved.

A fourth embodiment of the present invention is directed to a connection device for constructing an air conditioner according to the first to third embodiments, wherein the connecting means comprises a replacement gas filling container or a replacement gas recovery container. It is a female screw part to be fitted with a male screw part formed on the outer periphery of the base. According to the present embodiment, reliable connection can be performed because the male screw portion and the female screw portion are connected by fitting.

A fifth embodiment of the present invention is directed to a connection device for air conditioner installation according to the first to third embodiments, wherein the connection means comprises a threaded portion formed on an inner peripheral surface. It is provided rotatably on the outer periphery of the mouth. According to the present embodiment, screwing can be performed without rotating the connection device itself, so that workability during construction is excellent.

A sixth embodiment of the present invention is directed to an air conditioner connecting apparatus according to the first to third embodiments, wherein the connecting means comprises a replacement gas filling container or a replacement gas recovery container. This is a ring member that comes into contact with the outer periphery of the base. According to the present embodiment, since the connection can be performed by the coupling, the work can be easily performed without the necessity of screwing or the like.

According to a seventh embodiment of the present invention, in the connection device for constructing an air conditioner according to the first to third embodiments, the connecting means includes a replacement gas filling container or a replacement gas recovery container. It is a male screw part to be fitted with a female screw part formed on the inner periphery of the opening side of the holder to be held. According to the present embodiment, it is possible to stably insert the container and to reduce the possibility of leakage or the like.

According to an eighth embodiment of the present invention, in the connection device for air conditioner construction according to the first to third embodiments, the connecting means comprises the replacement gas filling container or the replacement gas recovery. This is a ring member that comes into contact with the inner periphery of the opening side of the holder that holds the container. According to the present embodiment, the container can be stably inserted, the possibility of leakage can be reduced, and work can be easily performed without screwing or the like.

According to a ninth embodiment of the present invention, there is provided a connection device for air conditioner installation according to the first to third embodiments, wherein the opening means has a through-hole and a sharp inclined surface at a tip end. Is formed as a needle-shaped member. According to the present embodiment, since the sharp inclined surface is formed at the tip, the container can be easily opened.

According to a tenth embodiment of the present invention, there is provided the connection device for air conditioner construction according to the first to third embodiments, wherein the opening means has a through hole, and the outer diameter of the connecting device is smaller than the replacement diameter. A needle-shaped member smaller than the diameter of the thin film portion sealing the opening of the gas filling container or the replacement gas recovery container. According to the present embodiment, since the needle-shaped member having the outer diameter smaller than the diameter of the thin film portion, a reliable opening can be easily performed.

According to an eleventh embodiment of the present invention, in the connection device for constructing an air conditioner according to the first to third embodiments, the opening means comprises a needle-like member having a through hole. The passage cross-sectional area of the hole is larger than the minimum passage cross-sectional area of the passage other than the needle-like member. According to the present embodiment, the pressure loss in the opening means can be reduced, and the filling or collection of the replacement gas can be performed efficiently.

According to a twelfth embodiment of the present invention, in the connection device for constructing an air conditioner according to the first to third embodiments, the opening means has a through hole and an inclined surface is formed at a tip. The replacement gas filling container or the replacement gas recovery container is connected, and the inclined surface is disposed in the mouth of the replacement gas filling container or the replacement gas recovery container. According to the present embodiment, the pressure loss at the opening means can be reduced, the airtightness can be ensured, and the filling or collection of the replacement gas can be performed efficiently.

According to a thirteenth embodiment of the present invention, in the connection device for constructing an air conditioner according to the first to third embodiments, the opening means comprises a needle-like member having a through hole. A seal member is disposed on the outer periphery of the member, and after the opening of the replacement gas filling container or the replacement gas recovery container is sealed by the seal member, the needle-like member seals the opening. This is to open the thin film part.
According to the present embodiment, airtightness can be ensured,
The filling or collection of the replacement gas can be performed efficiently.

According to a fourteenth embodiment of the present invention, there is provided a connection device for installing an air conditioner according to the first to third embodiments, wherein a seal is provided between a replacement gas filling container or a replacement gas recovery container. The seal member includes a material having an elastic force. According to the present embodiment, by arranging the seal member including a material having elasticity, airtightness can be secured, and the filling or collection of the replacement gas can be performed efficiently.

A connection device for installing an air conditioner according to a fifteenth embodiment of the present invention comprises a connecting means for connecting a refrigerant charge port and an opening means for opening a refrigerant charge port. According to the present embodiment, the refrigerant charge port can be opened simply by connecting this connection device to the refrigerant charge port. Therefore, according to the present embodiment, the operation of causing the replacement gas in the replacement gas filling container to flow into the air conditioner can be performed only by connecting this connection device. As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large cylinder having a valve, A single-use replacement gas-filled container without a valve can be used, and the workability of the air conditioner can be improved.

According to a sixteenth embodiment of the present invention, there is provided a connection device for air conditioner construction according to a sixteenth embodiment, wherein the first connection port has connection means for connecting a refrigerant charge port, and opening means for opening the refrigerant charge port. It is provided with. According to the present embodiment, the refrigerant charge port can be opened simply by connecting this connection device to the refrigerant charge port. Therefore, according to the present embodiment, the operation of recovering the replacement gas from the air conditioner into the replacement gas recovery container can be performed only by connecting the connection device. As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large container having a valve, A single-use replacement gas recovery container without a valve can be used, and the workability of the air conditioner can be improved.

A connection device for installing an air conditioner according to a seventeenth embodiment of the present invention is characterized in that the first connection port has connection means for connecting the refrigerant charge port, and an opening for opening the refrigerant charge port. Means. According to the present embodiment, the refrigerant charge port can be opened simply by connecting this connection device to the refrigerant charge port. Therefore, since both the replacement gas filling container and the replacement gas recovery container can be used, the operation of once replacing the air in the air conditioner with the replacement gas and then recovering the replacement gas is performed by this connection. It can be performed simply by using an apparatus. As described above, according to the present embodiment, it is not necessary to operate the vacuum pump as in the related art, and even when using the replacement gas, without using a large container having a valve, A single-use replacement gas filling device or replacement gas recovery container without a valve can be used, and the workability of the air conditioner can be improved.

According to an eighteenth embodiment of the present invention, in the connection device for constructing an air conditioner according to the fifteenth to seventeenth embodiments, the opening means comprises a valve stem for pushing and opening a valve core in the refrigerant charge port. It was done. According to the present embodiment, the valve core can be easily opened by the connecting operation.

According to a nineteenth embodiment of the present invention, in the connection device for air conditioner construction according to the eighteenth embodiment, the valve core moves the valve core by 1 mm or more. According to the present embodiment, the valve core is 1 mm
By moving as described above, a sufficient flow rate can be obtained.

A twentieth embodiment of the present invention is directed to a connection device for air conditioner construction according to the first to third and fifteenth to seventeenth embodiments, wherein the first connection port is connected to the second connection port. The mouth is formed by the same member without being connected by another member. According to the present embodiment, since the passage volume in the connection device can be reduced, the influence of air existing in the passage can be reduced.

According to a twenty-first embodiment of the present invention, in the connection device for air conditioner construction according to the twentieth embodiment, the first connection port and the second connection port are arranged coaxially. It is formed. According to the present embodiment,
Further, since the volume of the passage in the connecting device can be reduced, the influence of air existing in the passage can be reduced.

According to a twenty-second embodiment of the present invention, there is provided a connection device for installing an air conditioner according to the first to third embodiments and the fifteenth to seventeenth embodiments, wherein the first connection port is connected to the second connection port. The mouth is formed by being arranged at an angle so that the respective axial directions are different. According to the present embodiment, it is possible to easily fill or recover the replacement gas in a particularly narrow space.

A twenty-third embodiment of the present invention is directed to a connection device for air conditioner construction according to the first to third and fifteenth to seventeenth embodiments, wherein the first connection port is connected to the second connection port. The mouth is connected by a flexible connecting portion. According to the present embodiment, it is possible to easily fill or recover the replacement gas in a particularly narrow space.

The filling container according to the twenty-fourth embodiment of the present invention is connected to the connection device for air conditioner construction according to the first, third, fifteenth, or seventeenth embodiment, and is provided with a replacement gas or It is for charging a refrigerant. According to the present embodiment, a single-use type filling device having no open / close valve can be provided, and the filling container can be reduced in size.

The collection container according to the twenty-fifth embodiment of the present invention is connected to the connecting device for installing an air conditioner according to the second, third, sixteenth, or seventeenth embodiment, and is provided with a replacement gas or a replacement gas. It recovers the refrigerant. According to the present embodiment, it is possible to provide a single-use type recovery device having no open / close valve, and to reduce the size of the recovery container.

An air conditioner installation method according to a twenty-sixth embodiment of the present invention is directed to a replacement method using the air-conditioner installation connection device according to the first to third and fifteenth to seventeenth embodiments. It is for filling or collecting gas or refrigerant.
According to the present embodiment, it is not necessary to operate a vacuum pump as in the related art, and even when using a replacement gas, it is possible to use a valve without using a large container having a valve. It is possible to use a disposable type container, which can enhance the workability of the air conditioner.

A connection device for air conditioner construction according to a twenty-seventh embodiment of the present invention is provided with a needle-like member for opening the mouth of the replacement gas-filled container with an inclined surface at the tip at the connection port. The member has a through hole from the front end to the rear end, has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts is provided with a gas passage hole communicating with the refrigerant charge port. By the end face of the outer periphery of the counterbore part,
It blocks a part of the gas communication passage. According to the present embodiment, by closing a part of the gas communication passage with the end face, it is possible to suppress a momentary pressure rise at the beginning of opening.

[0033] A connection device for air conditioner construction according to a twenty-eighth embodiment of the present invention comprises, at the connection port, a needle-like member for opening the mouth of the replacement gas-filled container with an inclined surface at the tip. The member has a through hole from the front end to the rear end, has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts is provided with a gas passage hole communicating with the refrigerant charge port. A / B is 10 or more, where A is the depth dimension and B is the cross-sectional area. According to the present embodiment, the instantaneous pressure rise at the beginning of opening can be suppressed by the passage resistance of the gas passage hole.

A connecting device for installing an air conditioner according to a twenty-ninth embodiment of the present invention has a configuration in which a replacement gas recovery connection device can be connected to a replacement gas charging connection device. According to the present embodiment, the replacement gas recovery connection device is configured to be connectable to the replacement gas filling connection device, without removing the connection of the outdoor unit side of the air conditioner,
The replacement gas can be charged and recovered.

A connection device for installing an air conditioner according to a thirtieth embodiment of the present invention is configured such that a replacement gas charging connection device can be connected to a replacement gas recovery connection device. According to the present embodiment, the replacement gas charging connection device is configured to be connectable to the replacement gas recovery connection device, without removing the connection of the outdoor unit side of the air conditioner,
The replacement gas can be charged and recovered. Further, according to the present embodiment, at the time of recovery of the replacement gas, the replacement gas filling connection device is to be removed, so that the replacement gas filling connection device is caused to press the instantaneous pressure rise at the beginning of opening. Can be adopted.

[0036] In the connection device for air conditioner construction according to a thirty-first embodiment of the present invention, the connection port comprises: a needle-like member for opening a port of the replacement gas-filled container with an inclined surface at the tip; A seal member for pressing the member from the tip side thereof, wherein the inner peripheral diameter of a portion where the outer periphery of the seal member contacts the inner peripheral surface of the connection port is larger than the inner peripheral diameter of the connection port entrance portion. The outer diameter of the seal member is larger than the inner diameter of the entrance of the connection port. According to the present embodiment, after the replacement gas flows into the connection pipe, when the replacement gas filling container is removed from the connection device, even when the replacement gas remains at a high pressure in the connection pipe,
The needle-shaped member does not jump out of the connection device due to the residual pressure, and the operation can be performed safely.

[0037]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are configuration diagrams of a refrigeration cycle of an air conditioner used in the embodiment. FIG. 1 shows a state in which a replacement gas filling container is connected, and FIG. 2 shows a state in which a replacement gas recovery container is connected. The state is shown. First, an overall configuration of a refrigeration cycle constituting an air conditioner will be described with reference to FIGS. 1 and 2. The refrigeration cycle includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a throttle device 4, a dryer 5,
It is constituted by an indoor heat exchanger 6. Compressor 1, four-way valve 2, outdoor heat exchanger 3, expansion device 4, dryer 5
Is disposed in the outdoor unit A, and the indoor heat exchanger 6 is connected to the indoor unit B.
It is arranged in. The outdoor unit A is provided with a liquid side two-way valve 7 and a gas side three-way valve 8. The connection pipes 9 and 10 connecting the outdoor unit A and the indoor unit B are connected using a liquid-side two-way valve 7 and a gas-side three-way valve 8, respectively. Liquid side two-way valve 7
Has a screw portion 7a, and by opening the screw portion 7a, the pipe on the outdoor unit A side and the connection pipe 7 are communicated. The gas side three-way valve 8 has a screw portion 8a and a refrigerant charge port 8b. By opening the screw portion 8a, the pipe on the outdoor unit A side and the connection pipe 10 are communicated. As shown in FIG. 1, the connection device 30
Can be used to connect the replacement gas filling container 20, and as shown in FIG. 2, the replacement gas recovery container 40 can be connected using the connection device 50. The replacement gas filling container 20 and the replacement gas recovery container 40 can communicate with the connection pipe 10 by being connected to the connection devices 30 and 50.

Here, in the replacement gas-filled container 20,
A replacement gas composed of one or more types of mixed gas that is inert to the refrigerant and is a gas at normal temperature and normal pressure is sealed. More specifically, the replacement gas preferably has a lower global warming potential than the refrigerant. For example, when R410A is used as a refrigerant, global warming potential (GWP)
Is 1730, so a smaller gas that is inert to the refrigeration cycle is preferred. More specifically, carbon dioxide (GWP = 1), propane (GWP <3), butane (G
WP <3).

On the other hand, an adsorbent for absorbing the replacement gas is sealed in the replacement gas recovery container 40. When carbon dioxide is sealed as a replacement gas, zeolite, an epoxy compound, calcium hydroxide, calcium chloride, or the like can be used as the substance that absorbs the replacement gas.
Among them, zeolite is more preferable because of its high absorption rate. This zeolite has a pore size of 1.0 nm.
It is optimal because it has a high carbon dioxide absorption rate. Although the shape of the zeolite is not particularly specified, it is preferable that the zeolite be spherical because it is difficult to be crushed.

Next, referring to FIG. 3, a description will be given of an apparatus for connecting a replacement gas-filled container according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to an embodiment of the present invention. Connection device 3
0 has a first connection port 30A connected to the refrigerant charge port 8b at one end and a replacement gas-filled container 20 at the other end.
And a second connection port 30B connected to the second connection port 30B. The first connection port 30A includes a connection means 31 connected to the refrigerant charge port 8b. Also, the second connection port 30
B is provided with a connecting means 32 connected to the replacement gas-filled container 20. Then, the connecting means 31 and the connecting means 3
2 is a ring-shaped sealing member 31A, 32A, respectively.
Is rotatably connected to the connection pipe 30C via the connection pipe.
In addition, nut portions 31B and 32B are formed on the outer periphery of each of the connecting means 31 and the connecting means 32. By providing the connecting means 31 and 32 rotatably with respect to the connecting pipe 30C in this manner, the connecting means 31 and 32 and the connecting device 3 are connected.
It is excellent in workability because it is not necessary to rotate the main body together. Here, the connection pipe 30C is formed of a bent pipe such that the first connection port 30A and the second connection port 30B have different axial directions. Connection pipe 3 bent in this way
By using 0C, construction in a narrow place can be easily performed.

On the inner peripheral surface of the connecting means 31, there is formed a female screw 33 which is screwed into the male screw 81 of the refrigerant charge port 8b. On the inner peripheral surface of the connecting means 32, a female screw 34 which is screwed to the male screw 21 of the mouth portion of the replacement gas filling container 20 is formed. In the connecting means 31, a valve stem 35 is provided.
And a seal member 36 made of an O-ring or the like. Here, the valve stem 35 comes into contact with a valve core 82 in the refrigerant charge port 8b.
Has a length that can be pressed.

On the other hand, an opening means 37 is formed in the connecting means 32 so that a hole can be made in the thin film provided at the mouth of the mouthpiece of the replacement gas filling container 20. The opening means 37 has a through hole 37A at the center and the inclined surface 3
It is constituted by a needle-like member forming 7B. The passage diameter of the through hole 37 </ b> A is preferably formed such that the passage cross-sectional area in the radial direction is larger than the minimum passage cross-sectional area of the other passages of the replacement gas charging device 30. The inclined surface 37B is preferably an acute inclined surface of 45 degrees or less with respect to the stroke direction in which the replacement gas-filled container 20 moves by screwing. The opening means 37 has a pedestal portion for attachment to the connecting means 32. The outer diameter of the needle-like member excluding this pedestal portion is provided at the mouth of the mouth portion of the replacement gas-filled container 20. The diameter is smaller than the diameter of the thin film portion. With such dimensions, the thin film portion can be reliably opened.

On the outer periphery of the opening means 37, an annular seal member 38 is provided. The seal member 38 is formed of a material having an elastic force such as rubber. Note that the seal member 38 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 38 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the opening means 37 and the sealing member 38 are opened after the tip of the base of the replacement gas filling container 20 is pressed against the sealing member 38 and the mouth of the replacement gas filling container 20 is sealed. 37 is arranged to open the thin film portion provided at the mouth of the mouth portion of the replacement gas filling container 20. The connecting means 31 and the connecting means 32 are connected to the refrigerant charge port 8.
It is preferable to change, for example, the outer diameter or the inner diameter so that the b side and the replacement gas-filled container 20 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

It is preferable that the connection means 31 constituting the connection portion with the refrigerant charge port 8b be a threaded joint in order to secure the degree of sealing. In order to further increase the degree of sealing, it is preferable to provide a sealing member 36 such as a rubber O-ring. In this case, the female screw 33 is screwed into the male screw 81 of the refrigerant charge port 8b. At this time, before the valve rod 35 pushes the valve core 82 in the refrigerant charge port 8b, the seal member 36 is screwed into the male screw 81. It is preferable that the two screws 81 and 33 be in contact with each other so that air is not left in the refrigeration cycle. Also, when removing the screws 81 and 33, the valve stem 35 and the valve core 8 are removed.
It is preferable that the seal member 36 is separated from the male screw 81 of the refrigerant charge port 8b after the separation from the male screw 81. The refrigerant charge port 8b is connected to the valve core 82
The valve core 82 is configured to be opened by pressing the valve core 82. The valve core 82 is configured to be pressed against the seat 84 by the elastic body 83. The valve core 82
Is connected to the elastic body 83 via the connecting means 85.

Next, a connection device for a replacement gas-filled container according to another embodiment will be described with reference to FIG. FIG.
It is principal part sectional drawing which shows schematic structure of the connection apparatus of the replacement gas filling container by another Example. Note that the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The connecting device 30 according to the present embodiment uses a flexible connecting pipe 30D instead of the connecting pipe 30C in the embodiment shown in FIG. The connecting pipe 30D is formed of a rubber pipe, a bellows structure, or the like, and can be flexibly bent while maintaining the cross-sectional shape of the passage in the pipe. In the present embodiment, the workability can be further improved by using such a flexible connecting pipe 30D. In particular, the outdoor unit of the air conditioner is generally arranged along the wall surface of the building, and the periphery of the pipe connection valve element provided in the outdoor unit is usually a narrow space. Flexible connecting pipe 30D
By using, the filling and collection of the replacement gas can be easily performed.

Next, a connection device for a replacement gas-filled container according to another embodiment will be described with reference to FIGS. FIG. 5 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to another embodiment, and FIG.
It is an X-ray sectional view. The connection device 30 includes a first connection port 30A connected to the refrigerant charge port 8b at one end, and a second connection port 30B connected to the replacement gas filling container 20 at the other end. The first connection port 30A includes a connection means 31 connected to the refrigerant charge port 8b. In addition, the second connection port 30 </ b> B includes a connection unit 32 connected to the replacement gas-filled container 20. The connecting means 31 and the connecting means 32 are integrally formed by a member 30E without being connected by other members such as the connecting pipes 30C and 30D used in the embodiment shown in FIGS. I have. The member 30E is provided with a gas passage hole 30F that connects the first connection port 30A and the second connection port 30B. The connecting means 31 and the connecting means 32 are formed on a straight line so that the first connection port 30A and the second connection port 30B are coaxial. In addition,
On the outer periphery of each of the connecting means 31 and the connecting means 32,
Nut portions 31B and 32B are formed. By thus integrally forming the connecting means 31 and 32 with the same member, the passage volume in the connecting means 31 and 32 can be reduced, and the influence of air existing in the passage can be reduced. it can. Also, connecting means 31 and connecting means 32
Are formed on a straight line so that the first connection port 30A and the second connection port 30B are coaxial with each other, so that the volume in the passage can be further reduced.

On the inner peripheral surface of the connecting means 31, there is formed a female screw 33 screwed to the male screw 81 of the refrigerant charge port 8b. On the inner peripheral surface of the connecting means 32, a female screw 34 which is screwed to the male screw 21 of the mouth portion of the replacement gas filling container 20 is formed. In the connecting means 31, a valve stem 35 is provided.
And a seal member 36 made of an O-ring or the like. Here, the valve stem 35 has a configuration protruding from the member 30E, and has a length capable of contacting the valve core 82 in the refrigerant charge port 8b and further pushing the valve core 82.

On the other hand, an opening means 37 is formed in the connecting means 32 so that a hole can be made in a thin film portion provided in the mouth of the mouthpiece of the replacement gas filling container 20. The opening means 37 has a through hole 37A at the center and the inclined surface 3
It is constituted by a needle-like member forming 7B. The through hole 37A is provided from the front end where the inclined surface 37B is formed to the rear end where the counterbore portion 37C is formed.
An end face 37D on the outer periphery of the counterbore portion 37C is in contact with the member 30E. The opening means 37 has a pedestal portion for mounting on the connecting means 32. The outer diameter of the needle-shaped member excluding this pedestal portion is the same as that of the thin film provided at the mouth of the mouth portion of the replacement gas-filled container 20. The dimensions are smaller than the diameter of the part. With such dimensions, the thin film portion can be reliably opened.

On the outer periphery of the opening means 37, an annular seal member 38 is provided. The seal member 38 is formed of a material having an elastic force such as rubber. Note that the seal member 38 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 38 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the opening means 37 and the sealing member 38 are opened after the tip of the base of the replacement gas filling container 20 is pressed against the sealing member 38 and the mouth of the replacement gas filling container 20 is sealed. 37 is arranged to open the thin film portion provided at the mouth of the mouth portion of the replacement gas filling container 20. The connecting means 31 and the connecting means 32 are connected to the refrigerant charge port 8.
It is preferable to change, for example, the outer diameter or the inner diameter so that the b side and the replacement gas-filled container 20 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

It is preferable that the connection means 31 constituting the connection portion with the refrigerant charge port 8b be a threaded joint in order to ensure the degree of sealing. In order to further increase the degree of sealing, it is preferable to provide a sealing member 36 such as a rubber O-ring. In this case, the female screw 33 is screwed into the male screw 81 of the refrigerant charge port 8b. At this time, before the valve rod 35 pushes the valve core 82 in the refrigerant charge port 8b, the seal member 36 is screwed into the male screw 81. It is preferable that the two screws 81 and 33 be in contact with each other so that air is not left in the refrigeration cycle. Also, when removing the screws 81 and 33, the valve stem 35 and the valve core 8 are removed.
It is preferable that the seal member 36 is separated from the male screw 81 of the refrigerant charge port 8b after the separation from the male screw 81.

As shown in FIG. 5 and FIG.
D is preferably configured to close a part of the gas communication passage 30F. When CO ₂ is used as the replacement gas, a high pressure acts instantaneously, particularly at the beginning of opening the replacement gas filling container 20. In each of the above embodiments, the case has been described in which the refrigerant is directly connected to the refrigerant charge port 8b of the pipe connection valve provided in the outdoor unit. However, for example, a gauge manifold or the like is provided between the connection device and the pipe connection valve. A pressure measuring device may be connected. In such a case, the connection means 31 of the connection device is configured to connect to the refrigerant charging port of the pressure measuring tool. In each connection device described in the above embodiment, the connection is made directly to the refrigerant charging port 8b of the pipe connection valve provided in the outdoor unit, and the connection is made via the refrigerant charging port of the pressure measuring tool. There is no substantial difference from the case. In such a case, the gauge needle of the pressure measuring instrument may be shaken off by the instantaneous high pressure at the initial stage of opening the replacement gas-filled container 20. Therefore, by closing a part of the gas communication passage 30F with the end face 37D, it is possible to suppress a momentary pressure rise at the beginning of opening.

Further, such an instantaneous pressure increase in the initial stage of opening can be prevented by optimizing the depth dimension and the cross-sectional area of the gas passage hole 30F. FIG. 7 shows the depth dimension of the gas passage hole 30F as A (mm) and the cross-sectional area as B (m).
and A / B when the m ^2), a diagram showing the relationship between the instantaneous pressure of the unsealing early. In consideration of the low pressure side gauge pressure range of the gauge manifold generally used in the related art, it is preferable to suppress the pressure to 16 kg / cm ² or less. Therefore, as shown in FIG.
Is preferably 10 or more. More specifically,
When the cross-sectional area B is 0.78 mm ² , the depth A
Is set to 7.80 mm or more. In particular, this gas passage hole 30
When F is formed by drilling, the cross-sectional area B is set to 0.
It is difficult to make it less than 78 mm ² . Therefore, the depth dimension A is preferably set to 7.80 mm or more. In the case of forming by a laser processing gas passage hole 30F is, it is also possible to cross-sectional area B and smaller than 0.78 mm ^2, 0.20 mm ² cross-sectional area B is specifically
It is preferable to set the degree. Such an instantaneous pressure increase at the initial stage of opening can also be prevented by optimizing the depth dimension and cross-sectional area of the through hole 37A instead of the gas passage hole 30F. The relationship between the depth dimension and the sectional area is the same as that of the gas passage hole 30F. However, the depth dimension is a dimension excluding the inclined surface 37B. Further, the inclination of the inclined surface 37B is made gentle, the needle-like member 37 is shortened,
Alternatively, by increasing the length of the seal member 38 in the stroke direction, the opening area of the replacement gas-filled container 20 is reduced,
A momentary pressure increase at the beginning of opening may be prevented.

Next, a connection device for a replacement gas-filled container according to another embodiment will be described with reference to FIG. Note that the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. Inside the connecting means 32 according to the present embodiment, a seal member 38 having an outer diameter larger than the inner diameter of the opening means 37 of the needle-shaped member and the inlet 32A of the connecting means 32 is provided. Further, on the inner peripheral surface of the inlet portion 32A of the connecting means 32, a male screw 2 of a mouth portion of the replacement gas-filled container 20 is provided.
1 is formed with a female screw 34 to be screwed. Also, a portion 32B of the connecting means 32 where the outer periphery of the seal member 38 contacts.
Has an inner diameter larger than that of the inlet portion 32A in accordance with the outer circumference of the seal member 38. With such dimensions, even when the replacement gas remains at a high pressure in the connection pipe, the operation can be performed safely without the needle-like member jumping out.

Next, a connection device for the replacement gas recovery container will be described with reference to FIG. FIG. 9 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to an embodiment of the present invention. Note that the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The connection device 50 includes a first connection port 50A connected to the refrigerant charge port 8b at one end, and a second connection port 50B connected to the replacement gas recovery container 40 at the other end. First connection port 50
A is provided with a connecting means 51 connected to the refrigerant charge port 8b. Further, the second connection port 50B is provided with a connection means 52 connected to the replacement gas recovery container 40. The connecting means 51 and the connecting means 52 are connected to the connecting pipes 50C and 50D used in the embodiment shown in FIGS.
And are integrally formed by the same member without being connected by other members. Also, the connecting means 5
1 and the connecting means 52 are formed linearly so that the first connection port 50A and the second connection port 50B are coaxial. Note that nut portions 51B and 52B are formed on the outer periphery of the connecting means 51 and the connecting means 52, respectively. By integrally forming the connecting means 51 and 52 with the same member in this way, the passage volume in the connecting means 51 and 52 can be reduced, and the influence of air existing in the passage can be reduced. it can. Also, the connecting means 51
By forming the connection means 52 and the connecting means 52 on a straight line so that the first connection port 50A and the second connection port 50B are coaxial, the internal volume of the passage can be further reduced. Considering the workability of the recovery operation of the replacement gas,
It is preferable that the connection port 50A and the second connection port 50B are bent so that the axial directions thereof are different.

On the inner peripheral surface of the connecting means 51, a female screw 53 screwed to the male screw 81 of the refrigerant charge port 8b is formed. On the inner peripheral surface of the connecting means 52, a female screw 54 screwed to the male screw 41 of the mouth portion of the replacement gas recovery container 40 is formed. The connecting rod 51 includes a valve rod 55
And a seal member 56 made of an O-ring or the like. Here, the valve rod 55 contacts the valve core 82 in the refrigerant charge port 8b, and furthermore, the valve core 82
Has a length that can be pressed.

On the other hand, an opening means 57 is formed in the connecting means 52 so as to make a hole in a thin film portion provided at the mouth of the mouthpiece of the replacement gas recovery container 40. The opening means 57 has a through-hole 57A at the center and an inclined surface 5 at the tip.
It is constituted by a needle-like member forming 7B. The passage diameter of the through-hole 57A is preferably formed such that the passage cross-sectional area in the radial direction is larger than the minimum passage cross-sectional area in the other passages of the replacement gas filling device 50. The inclined surface 57B is preferably an acute inclined surface of 45 degrees or less with respect to the stroke direction in which the replacement gas recovery container 40 moves by screwing. The opening means 57 has a pedestal portion for attachment to the connecting means 52. The outer diameter of the needle-like member excluding this pedestal portion is provided at the mouth of the mouthpiece portion of the replacement gas recovery container 40. The diameter is smaller than the diameter of the thin film portion. With such dimensions, the thin film portion can be reliably opened.

On the outer periphery of the opening means 57, an annular seal member 58 is provided. The seal member 58 is formed of a material having an elastic force such as rubber. Note that the seal member 58 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 58 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the opening means 57 and the seal member 58 are connected to each other after the tip of the mouthpiece of the replacement gas recovery container 40 is pressed against the seal member 58 and the mouth of the replacement gas recovery container 40 is sealed. 57 is disposed so as to open the thin film portion provided at the mouth of the mouth portion of the replacement gas recovery container 40. The connecting means 51 and the connecting means 52 are connected to the refrigerant charging port 8.
It is preferable to change, for example, the outer diameter or the inner diameter so that the b side and the replacement gas recovery container 40 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

It is preferable that the connecting means 51 constituting the connection portion with the refrigerant charge port 8b be a threaded joint in order to ensure the degree of sealing. In order to further increase the degree of sealing, it is preferable to provide a sealing member 56 such as a rubber O-ring. In this case, the female screw 53 is screwed into the male screw 81 of the refrigerant charge port 8b. At this time, before the valve rod 55 pushes the valve core 82 in the refrigerant charge port 8b, the seal member 56 is screwed into the male screw 81. It is preferable that the two screws 81 and 53 be in contact with each other so as to hermetically close the two screws 81 and 53, since air is less likely to remain in the refrigeration cycle. Also, when removing the screws 81 and 53, the valve rod 55 and the valve core 8 are removed.
It is preferable that the seal member 56 be separated from the male screw 81 of the refrigerant charge port 8b after the separation from the male screw 81.

Next, a connection device for a replacement gas recovery container according to another embodiment will be described with reference to FIG. FIG.
FIG. 9 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to another embodiment. Note that the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The present embodiment is a connection device in the case where a container having no male screw 41 in the mouth portion as in the embodiment of FIG. 9 is used as the replacement gas recovery container 40. Such a replacement gas recovery container 40
Is used, a holder 60 capable of housing the replacement gas recovery container 40 therein is used. Such a holder 6
Reference numeral 0 denotes a bottomed cylindrical shape, and one end side is an opening through which the replacement gas recovery container 40 can be inserted.
A female screw 61 is formed on the inner peripheral surface on the opening end side of the holder 60. Therefore, the connection device 50 according to the present embodiment includes a seal member 54B made of an O-ring or the like instead of the female screw 54 in the embodiment illustrated in FIG. Further, the connecting device 50 according to the present embodiment has a female screw 52 </ b> C
Is formed. Replacement gas recovery container 4 according to this embodiment
0 is connected to the connection device 50 by housing the replacement gas recovery container 40 in the holder 60 and then screwing the female screw 61 of the holder 60 to the male screw 52C of the connection device 50. By the screwing of the female screw 61 and the male screw 52C, the replacement gas recovery container 40 is pressed from the bottom of the holder 60 and is gradually inserted into the connection device 50. The other points are the same as in the above embodiment.
By connecting the replacement gas recovery container 40 to the connection device 50 using the holder 60 as in the present embodiment, it is possible to prevent poor connection such as the replacement gas recovery container 40 being inclinedly coupled. Thus, reliable connection can be achieved.

Next, a connection device for a replacement gas recovery container according to another embodiment will be described with reference to FIG. FIG.
FIG. 9 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to another embodiment. Note that the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. This embodiment is similar to the embodiment of FIG.
0 is a connection device in the case of using a container having no male screw in the base. As in the embodiment of FIG. 10, a holder 60 capable of housing the replacement gas recovery container 40 therein.
Is used. However, the holder 60 according to this embodiment is different from the embodiment shown in FIG.
A connecting member 62 including a ring or the like is provided. Therefore,
In the connecting device 50 according to the present embodiment, a concave portion 52 </ b> D fitted on the connecting member 62 of the holder 60
Is formed. Then, the coupling member 62 and the concave portion 52D can be coupled to each other. As in the present embodiment, when the replacement gas recovery container 40 is connected to the connection device 50 using the holder 60, the connecting member 6
By making the coupling connection by the two and the concave portion 52D, the screwing work can be eliminated, so that the workability in a narrow place is excellent.

Next, a replacement gas charging connection device 30 and a replacement gas recovery connection device 50 according to another embodiment of the present invention will be described with reference to FIG. FIG. 12 is a sectional view of a main part showing a schematic configuration of a replacement gas charging connection device 30 and a replacement gas recovery connection device 50 according to another embodiment of the present invention. The replacement gas filling connection device 30 has a first connection port 30A connected to the refrigerant charge port 8b at one end and a second connection port 3 connected to the replacement gas filling container at the other end.
0B. The first connection port 30A includes a connection means 31 connected to the refrigerant charge port 8b. In addition, the second connection port 30B is provided with a connection means 32 connected to the replacement gas filling container. The connecting means 31 and the connecting means 32 are rotatably connected to the connecting pipe 30D via ring-shaped seal members 31A and 32A, respectively. It should be noted that nut portions 31B, 32B
Are formed. By providing the connecting means 31 and 32 rotatably with respect to the flexible connecting pipe 30D in this way, the connecting means 31 and 32 and the main body of the connecting device 30 do not need to be rotated together, so that the workability is excellent. I have. In addition, by using a flexible connecting pipe for the connecting pipe 30D,
Construction in a narrow place can be easily performed.

On the inner peripheral surface of the connecting means 31, a female screw 33 screwed to the male screw 81 of the refrigerant charge port 8b is formed. On the inner peripheral surface of the connecting means 32, a female screw 34 which is screwed to the male screw 21 of the mouth portion of the replacement gas filling container 20 is formed. The female screw 3 of the connecting means 32
A male screw 32 </ b> C is formed on the outer peripheral portion where 4 is formed. In the connecting means 31, a valve stem 35 and a seal member 36 composed of an O-ring or the like are provided. Here, the valve rod 35 is connected to the valve core 82 in the refrigerant charge port 8b.
And the valve core 82 can be pushed further.

On the other hand, an opening means 37 is formed in the connecting means 32 so that a hole can be made in the thin film provided at the mouth of the mouthpiece of the replacement gas filling container. This opening means 37
Has a through hole 37A at the center and an inclined surface 37B at the tip.
Is formed by a needle-shaped member formed by Through hole 3
The passage diameter of the passage 7A is preferably formed so that the passage cross-sectional area in the radial direction is larger than the minimum passage cross-sectional area of the other passages of the replacement gas filling device 30. Slope 37
B is preferably a sharp inclined surface of 45 degrees or less with respect to the stroke direction in which the replacement gas-filled container moves by screwing. Further, the opening means 37 is connected to the connecting means 3.
2, the outer diameter of the needle-shaped member excluding this pedestal is smaller than the diameter of the thin film provided at the mouth of the mouth of the replacement gas-filled container. I have. With such dimensions, the thin film portion can be reliably opened.

On the outer periphery of the opening means 37, an annular seal member 38 is provided. The seal member 38 is formed of a material having an elastic force such as rubber. Note that the seal member 38 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 38 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the opening means 37 and the sealing member 38 are opened after the tip of the base of the replacement gas filling container 20 is pressed against the sealing member 38 and the mouth of the replacement gas filling container 20 is sealed. 37 is arranged to open the thin film portion provided at the mouth of the mouth portion of the replacement gas filling container 20. The connecting means 31 and the connecting means 32 are connected to the refrigerant charge port 8.
It is preferable to change, for example, the outer diameter or the inner diameter so that the b side and the replacement gas-filled container 20 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

It is preferable that the connecting means 31 constituting the connection portion with the refrigerant charge port 8b be a threaded joint from the viewpoint of securing the degree of sealing. In order to further increase the degree of sealing, it is preferable to provide a sealing member 36 such as a rubber O-ring. In this case, the female screw 33 is screwed into the male screw 81 of the refrigerant charge port 8b. At this time, before the valve rod 35 pushes the valve core 82 in the refrigerant charge port 8b, the seal member 36 is screwed into the male screw 81. It is preferable that the two screws 81 and 33 be in contact with each other so that air is not left in the refrigeration cycle. Also, when removing the screws 81 and 33, the valve stem 35 and the valve core 8 are removed.
It is preferable that the seal member 36 is separated from the male screw 81 of the refrigerant charge port 8b after the separation from the male screw 81. The refrigerant charge port 8b is connected to the valve core 82
The valve core 82 is configured to be opened by pressing the valve core 82. The valve core 82 is configured to be pressed against the seat 84 by the elastic body 83. The valve core 82
Is connected to the elastic body 83 via the connecting means 85.

The replacement gas recovery connection device 50 has a first connection port 50A connected to the replacement gas charging connection device 30 at one end, and a second connection port 50A connected to the replacement gas recovery container 40 at the other end. Connection port 50B. Here, the replacement gas recovery container 40 is configured to open by pressing the valve core 42.
Is configured to be pressed against the seat 44 by the elastic body 43. Note that the valve core 42 is
And is joined to the elastic body 43 via the through hole. First connection port 5
OA is provided with a connecting means 51 connected to the replacement gas filling connection device 30. In addition, a connecting means 52 connected to the replacement gas recovery container 40 is provided in the second connection port 50B.
It has. The connecting means 51 and the connecting means 52 are integrally formed by the same member. The connecting means 51 and the connecting means 52 are connected to the first connection port 5.
0A and the second connection port 50B are formed on a straight line so as to be coaxial. Note that nut portions 51B and 52B are formed on the outer periphery of the connecting means 51 and the connecting means 52, respectively. By thus integrally forming the connecting means 51 and 52 with the same member, the connecting means 5
The passage volume in the passages 1 and 52 can be reduced, and the influence of air existing in the passage can be reduced. Also, the connecting means 51 and the connecting means 52 are connected to the first connection port 5.
By configuring linearly so that 0A and the second connection port 50B are coaxial, the volume in the passage can be further reduced.

On the inner peripheral surface of the connecting means 51, there is formed a female screw 53 which is screwed with the male screw 32C of the replacement gas filling connection device 30. On the inner peripheral surface of the connecting means 52, a female screw 54 screwed to the male screw 41 of the mouth portion of the replacement gas recovery container 40 is formed. In the connecting means 51, O
A sealing member 56 made of a ring or the like is provided.
On the other hand, a valve rod 55 and an annular sealing member 58 are disposed in the connecting means 52. Here, the valve rod 55 has such a length that it can contact the valve core 42 in the replacement gas recovery device 40 and further push the valve core 42. The seal member 58 is formed of a material having an elastic force such as rubber. Note that the seal member 58 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 58 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the valve stem 55 and the seal member 58 are connected to each other after the distal end of the base of the replacement gas recovery container 40 is pressed against the seal member 58 and the mouth of the replacement gas recovery container 40 is sealed. The rod 55 is arranged so as to press the valve core 42 of the replacement gas recovery container 40 to open it. It is preferable that the connecting means 51 and the connecting means 52 have different outer diameters or inner diameters, for example, so that the replacement gas filling connection device 30 side and the replacement gas recovery container 40 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented. As in the present embodiment, the replacement gas recovery connection device 50
Is configured to be connectable to the replacement gas filling device 30, without removing the connection of the outdoor unit side of the air conditioner,
The replacement gas can be charged and recovered.

Next, a replacement gas charging connection device 30 and a replacement gas recovery connection device 50 according to another embodiment of the present invention will be described with reference to FIG. FIG. 13 is a sectional view of a main part showing a schematic configuration of a replacement gas charging connection device 30 and a replacement gas recovery connection device 50 according to another embodiment of the present invention. The replacement gas recovery connection device 50 has a first connection port 50A connected to the refrigerant charge port 8b at one end, and a second connection port 5A connected to the replacement gas recovery container at the other end.
0B. Here, the replacement gas recovery container connected to the second connection port 50B and used is the replacement gas recovery container 40 shown in FIG. Therefore, the valve core 42 is configured to be opened by being pressed. The first connection port 50A includes a connection means 51 connected to the refrigerant charge port 8b. Also, the second connection port 50B
Has a connecting means 52 connected to the replacement gas recovery container. The connecting means 51 and the connecting means 52 are rotatably connected to the connecting pipe 50D via ring-shaped seal members 51A and 52A, respectively. Note that nut portions 51B and 52B are formed on the outer periphery of the connecting means 51 and the connecting means 52, respectively. Thus, the connecting means 51 and 52 are connected to the flexible connecting pipe 50D.
The connecting means 51, 52
It is excellent in workability because it is not necessary to rotate the main body and the replacement gas recovery connection device 50 together. In addition, connecting pipe 50D
By using a flexible connecting pipe, construction in a narrow place can be easily performed.

On the inner peripheral surface of the connecting means 51, a female screw 53 screwed to the male screw 81 of the refrigerant charge port 8b is formed. On the inner peripheral surface of the connecting means 52, a female screw 54 is formed which is screwed to a male screw of a mouth portion of the replacement gas recovery container. The female screw 54 of the connecting means 52 is also connectable to the replacement gas filling connection device 30 as shown. In the connecting means 51, a valve rod 55 and a seal member 56 composed of an O-ring or the like are provided. Here, the valve rod 55 has such a length that it can abut on the valve core 82 in the refrigerant charge port 8b and can push the valve core 82 further. On the other hand, a valve rod 55 and an annular seal member 58 are provided in the connecting means 52. Here, the valve rod 55 has such a length that it can contact the valve core 42 in the replacement gas recovery device 40 and further push the valve core 42. Seal member 58
Is formed of a material having elasticity such as rubber. Note that the seal member 58 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Also, the sealing member 38
May be configured by arranging a plurality of O-rings in the stroke direction. Here, the valve stem 55 and the sealing member 58
After the tip of the mouthpiece of the replacement gas recovery container 40 is pressed against the sealing member 58 and the mouth of the replacement gas recovery container 40 is sealed, the valve rod 55 closes the valve core 42 of the replacement gas recovery container 40. It is arranged so as to be opened by pressing. On the inner peripheral surface of the connecting means 52, a female screw 5 screwed to the male screw 33 of the connecting means 31 of the replacement gas filling connection device 30 is provided.
4 are formed.

It is preferable that the connection means 51 constituting the connection portion with the refrigerant charge port 8b be a threaded joint in order to ensure the degree of sealing. In order to further increase the degree of sealing, it is preferable to provide a sealing member 56 such as a rubber O-ring. In this case, the female screw 53 is screwed into the male screw 81 of the refrigerant charge port 8b. At this time, before the valve rod 55 pushes the valve core 82 in the refrigerant charge port 8b, the seal member 56 is screwed into the male screw 81. It is preferable that the two screws 81 and 53 be in contact with each other so as to hermetically close the two screws 81 and 53, since air is less likely to remain in the refrigeration cycle. Also, when removing the screws 81 and 53, the valve rod 55 and the valve core 8 are removed.
It is preferable that the seal member 56 be separated from the male screw 81 of the refrigerant charge port 8b after the separation from the male screw 81. The refrigerant charge port 8b is connected to the valve core 82
The valve core 82 is configured to be opened by pressing the valve core 82. The valve core 82 is configured to be pressed against the seat 84 by the elastic body 83. The valve core 82
Is connected to the elastic body 83 via the connecting means 85. It is preferable that the connecting means 51 and the connecting means 52 have different outer diameters or inner diameters, for example, so that the replacement gas filling connection device 30 side and the replacement gas recovery container 40 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

The replacement gas filling connection device 30 has a first connection port 30A connected to the replacement gas recovery connection device 50 at one end and a second connection port 30A connected to the replacement gas filling container 20 at the other end. Connection port 30B. First connection port 30
A includes a connecting means 31 connected to the replacement gas recovery connection device 50. The second connection port 30 </ b> B has a connecting means 32 connected to the replacement gas-filled container 20.
It has. The connecting means 31 and the connecting means 32 are integrally formed by the same member. The connecting means 31 and the connecting means 32 are connected to the first connection port 3.
0A and the second connection port 30B are formed on a straight line so as to be coaxial. In addition, on the outer periphery of the connecting means 32,
A nut portion 32B is formed. By thus integrally forming the connecting means 31 and 32 with the same member, the passage volume in the connecting means 31 and 32 can be reduced, and the influence of air existing in the passage can be reduced. it can. Further, by configuring the connecting means 31 and the connecting means 32 in a straight line so that the first connection port 30A and the second connection port 30B are coaxial, the volume in the passage can be further reduced. it can.

On the outer peripheral surface of the connecting means 31, there is formed a female screw 33 screwed to the female screw 54 of the replacement gas recovery and connection device 50. On the inner peripheral surface of the connecting means 32, a female screw 34 which is screwed to the male screw 21 of the mouth portion of the replacement gas filling container 20 is formed. Connecting means 31 and connecting means 3
It is preferable that, for example, the outer diameter or the inner diameter be changed to 2 so that the replacement gas recovery connection device 50 side and the replacement gas filling container 20 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

On the other hand, an opening means 37 is formed in the connecting means 32 so as to make a hole in a thin film portion provided in the mouth of the mouthpiece part of the replacement gas filling container 20. The opening means 37 has a through hole 37A at the center and the inclined surface 3
It is constituted by a needle-like member forming 7B. The through hole 37A is provided from the front end where the inclined surface 37B is formed to the rear end where the counterbore portion 37C is formed.
An end face 37D on the outer periphery of the counterbore portion 37C is in contact with the member 30E. The opening means 37 has a pedestal portion for mounting on the connecting means 32. The outer diameter of the needle-shaped member excluding this pedestal portion is the same as that of the thin film provided at the mouth of the mouth portion of the replacement gas-filled container 20. The dimensions are smaller than the diameter of the part. With such dimensions, the thin film portion can be reliably opened.

On the outer periphery of the opening means 37, an annular seal member 38 is provided. The seal member 38 is formed of a material having an elastic force such as rubber. Note that the seal member 38 may be elastically deformed in the stroke direction by a predetermined amount, and does not necessarily need to be made of only a material having elastic force. Further, the seal member 38 may be configured by arranging a plurality of O-rings in the stroke direction. Here, the opening means 37 and the seal member 38 are connected to each other by the tip of the mouth portion of the replacement gas-filled container 20.
8, the opening means 37 is arranged so as to open the thin film provided at the mouth of the mouthpiece of the replacement gas filling container 20 after the mouth of the replacement gas filling container 20 is sealed. It is preferable that the connecting means 31 and the connecting means 32 have different outer diameters or inner diameters, for example, so that the replacement gas recovery connection device 50 side and the replacement gas filling container 20 side are not mistaken. In particular, by making the inner diameters different, erroneous connection can be reliably prevented.

It is preferable that the connection means 31 constituting the connection portion with the replacement gas recovery connection device 50 be a threaded joint from the viewpoint of securing the degree of sealing.

As shown in the figure, it is preferable that the end face 37D is configured to close a part of the gas communication passage 30F. When CO ₂ is used as the replacement gas, a high pressure acts instantaneously, particularly at the beginning of opening the replacement gas filling container 20. In each of the above embodiments, the refrigerant charge port 8b of the pipe connection valve body provided in the outdoor unit
Although the description has been made of the case where the pressure measuring device is directly connected, a pressure measuring instrument such as a gauge manifold may be connected between the connecting device and the pipe connection valve body. In such a case, the connection means 31 of the connection device is configured to connect to the refrigerant charging port of the pressure measuring tool. In each connection device described in the above embodiment, the connection is made directly to the refrigerant charging port 8b of the pipe connection valve provided in the outdoor unit, and the connection is made via the refrigerant charging port of the pressure measuring tool. There is no substantial difference from the case. In such a case, the gauge needle of the pressure measuring instrument may be shaken off by the instantaneous high pressure at the initial stage of opening the replacement gas-filled container 20. Therefore, the gas communication passage 30F is formed by the end face 37D.
By closing a part, the instantaneous pressure rise at the beginning of opening can be suppressed.

Also, such an instantaneous pressure at the initial stage of opening
Ascending optimizes depth and cross-sectional area of gas passage hole 30F
Can also prevent this. Conventionally used in general
The gauge pressure range of the low pressure side of the gauge manifold
Considering that, 16kg / cm ²Keep the pressure below
Is preferred. Therefore, as described with reference to FIG.
The A / B of the over-hole 30F is preferably 10 or more.
No. More specifically, the cross-sectional area B is 0.78 mm²Made
At times, the depth A is set to 7.80 mm or more. Special
Next, this gas passage hole 30F is formed by drilling.
The cross-sectional area B is 0.78 mm²Less than
It is difficult. Therefore, the depth dimension A is set to 7.80 mm or more.
Preferably. The gas passage hole 30F is laser
When formed by processing or the like, the cross-sectional area B is 0.7
8mm²It is also possible to make it less than
Product B is 0.20mm²It is preferable to set the degree. Ma
In addition, such an instantaneous pressure increase at the beginning of opening
Depth dimension and cross-sectional area of through hole 37A instead of overhole 30F
Can also be prevented by optimizing. Depth dimension
And the cross-sectional area is the same as that of the gas passage hole 30F. Was
However, the depth dimension is a dimension excluding the inclined surface 37B.
And Also, the inclination of the inclined surface 37B is moderated,
Needle member 37 is shortened, or seal member 38 is
The length of the replacement gas-filled container 20
Reduce the opening area and reduce the instantaneous pressure rise at the beginning of opening.
May be prevented. Note that, as in this embodiment, the replacement gas
The replacement gas charging connection device 30 is connected to the recovery connection device 50.
The replacement gas filling connection device 3
0, instantaneous at the beginning of opening as described above
A configuration that prevents a pressure rise can be employed. sand
That is, according to the configuration of the present embodiment, the replacement gas recovery container 4
0, the replacement gas filling connection device 30
Remove. Therefore, when recovering the replacement gas,
Influence of flow resistance due to configuration to prevent momentary pressure rise
Realizes early recovery of replacement gas
be able to. As in this embodiment, the replacement gas recovery connection
A configuration in which the device 50 can be connected to the replacement gas filling device 30;
Disconnect the connection of the outdoor unit side of the air conditioner.
In addition, the filling and recovery of the replacement gas can be performed.

In the above embodiment, the connecting device shown in FIGS. 3 to 6 is a connecting device 30 for connecting the replacement gas-filled container 20, and the connecting device shown in FIGS. The connection device 50 for connecting the replacement gas collection container 40 has been described as the connection device 50 for connecting the replacement gas collection container 40, and the connection device shown in FIGS. The connection device shown in FIG.
Connection device 30 for connecting replacement gas-filled container 20
Can be used as it is. Also, the connection device 3
0 and the connecting device 50 have been described as separate members, but the male screw 21 of the replacement gas filling container 20 and the male screw 41 of the replacement gas recovery container 40 have the same size, so that the connecting device 30 The connection device 50 and the connection device 50 can be shared members. In addition, charging and recovery of the refrigerant can be performed using these connection devices 30 and 50.

Next, the relationship between the valve stem 35 of the connection device 30 and the valve stem 55 of the connection device 50 and the valve core 82 of the refrigerant charge port 8b according to the above embodiments will be described. As described above, the valve core 82 is
And is configured to be pressed against the seat portion 84 by
By being pressed by the valve stem 35 or the valve stem 55, the valve core 82 moves and the seat portion 84 is opened. FIG. 14 shows the amount of movement of the valve core 82 and the flow characteristics passing through the seat 84 at this time. In the figure, the horizontal axis indicates the movement amount of the valve core 82, and the vertical axis indicates the flow rate of the gas passing through the refrigerant charge port 8b. As shown in FIG.
Is less than 1 mm, the flow rate of the gas passing through the refrigerant charge port 8b is not sufficient. On the other hand, when the valve core 82 has moved by 1 mm or more, it can be seen that the flow rate of the gas passing through the refrigerant charge port 8b has hardly changed. For this reason, the amount by which the valve core 82 is moved by the valve rods 35 and 55 is preferably 1 mm or more. Further, the amount of movement of the valve core 82 by the valve rods 35 and 55 is preferably set to 1 mm to 2 mm.

Next, a method of installing the above air conditioner will be described. In the state before the construction, the refrigerant gas is filled in the piping on the outdoor unit A side such as the inside of the compressor 1 and the inside of the outdoor heat exchanger 3. At this time, the outdoor unit A is filled with a purge refrigerant gas in addition to the operation refrigerant gas necessary for operation. On the other hand, the pipes on the indoor unit B side such as the indoor heat exchanger 6 and the connection pipes 9 and 10 are not particularly sealed, and are open to the atmosphere.

First, the outdoor unit A and the indoor unit B are connected by connecting pipes 9 and 10. At this time, the space between the liquid-side two-way valve 7 and the connection pipe 9 is not sealed but slightly leaked. The thread 7a of the liquid-side two-way valve 7 and the thread 8a of the gas-side three-way valve 8 are closed. Next, the connection device 30 is attached to the refrigerant charge port 8b of the gas side three-way valve 8 of the outdoor unit A. By attaching the connection device 30 to the refrigerant charge port 8b, the valve core in the refrigerant charge port 8b is pushed by the valve rod 35 in the connection device 30, and the refrigerant charge port 8b is opened. Thereafter, the opening of the replacement gas-filled container 20 is opened by the opening means 37 in the connection device 30 by attaching the replacement gas-filled container 20 to the connection device 30. As a result, the replacement gas inside the replacement gas filling container 20 is introduced into the connection pipe 10 and the indoor unit B from the refrigerant charge port 8b via the connection device 30, and is guided to the connection pipe 9. Due to the introduced replacement gas, the connection pipe 9,
The air inside the indoor unit 10 and the indoor unit B is discharged to the atmosphere from the loosened portion of the flare portion of the liquid side two-way valve 7 together with the introduced replacement gas. Here, it is confirmed that gas leaks from between the liquid-side two-way valve 7 and the connection pipe 9, and after releasing a predetermined amount of gas, a joint between the liquid-side two-way valve 7 and the connection pipe 9 is formed. Seal. The predetermined amount of gas to be released may be measured by a flow meter, but the amount of gas in the replacement gas filling container 20 is slightly larger than the volume in the pipes in the indoor unit B and the connection pipes 9 and 10. If one replacement gas-filled container 20 can be used to construct one air conditioner, especially when the sound of gas leaking without using a flow meter becomes low, the liquid side 2 The joint between the direction valve 7 and the connection pipe 9 may be sealed.

Next, the connecting device 30 is removed from the refrigerant charging port 8b while the replacement gas-filled container 20 is mounted on the connecting device 30. If only the inert gas is introduced into the air conditioner, the liquid side
The screw portion 7a of the direction valve 7 and the screw portion 8a of the gas side three-way valve 8 are opened, and the refrigerant in the outdoor unit A flows through the indoor unit B. When removing the introduced replacement gas, at this time, the screw portion 7a of the liquid-side two-way valve 7 and the screw portion 8a of the gas-side three-way valve 8 are not opened, and as shown in FIG. Proceed to the replacement gas recovery step.

The replacement gas recovery step is achieved by connecting the replacement gas absorption container 40 to the refrigerant charge port 8b. As one method, first, the connection device 50 is connected to the replacement gas recovery container 40 by screwing the male screw 41 of the replacement gas recovery container 40 into the female screw 54 of the connection device 50. In this state, the replacement gas recovery container 40 is opened by the blade 57 of the connection device 50. Then, it was confirmed that a hole was formed at the end of the replacement gas recovery container 40, and the connection device 5 was checked.
0 is connected to the refrigerant charge port 8b. As described above, by screwing the connection device 50 into the refrigerant charge port 8b, the valve rod 55 of the connection device 50 pushes the valve core 82 in the refrigerant charge port 8b. The communication between the replacement gas recovery container 40 and the refrigerant charge port 8b allows the carbon dioxide gas in the connection pipes 9 and 10 and the pipe of the indoor unit B to flow into the replacement gas recovery container 40 from the refrigerant charge port 8b. be introduced. Thus, the connection device 5
By connecting 0 and the replacement gas recovery container 40 first,
It is possible to prevent the replacement gas from flowing out from the refrigerant charge port 8b, and to prevent the air in the atmosphere from being mixed thereafter. As another method, first, the other end of the connection device 50 is connected to the refrigerant charge port 8b, and then the replacement gas recovery container 40 is connected to the connection device 50. In this manner, by connecting the connection device 50 and the refrigerant charge port 8b first, the air in the connection device 50 can be pushed out by the replacement gas. The introduced replacement gas is
It is collected by the adsorbent inside the replacement gas recovery container 40. Thereafter, the connection device 5 is connected to the refrigerant charging port 8b.
0, and the screw portion 7a of the liquid side two-way valve 7 is completely opened. The connection device 50 is detached from the refrigerant charge port portion 8b while the replacement gas recovery container 40 is connected to the connection device 50. Finally, by completely opening the screw portion 8a of the gas side three-way valve 8, the installation work related to the construction of the air conditioner is completed. In addition, when sharing a connection device, it is preferable to construct by the following method. First, only the replacement gas-filled container 20 is removed while the connection device is connected to the refrigerant charge port 8b. Then, the replacement gas recovery container 40 is attached to the refrigerant charge port 8b. After the replacement gas is recovered, the connection device is removed from the refrigerant charge port 8b with the replacement gas recovery container 40 attached to the connection device.

By performing the work in the above steps, air in the refrigeration cycle can be removed. In the present embodiment, a method for installing an outdoor unit having a normal two-way valve and a three-way valve has been described. The air conditioner is not necessarily limited to the two-way valve and the three-way valve, but may be any air conditioner having a valve body having a refrigerant charge port.

[0085]

As described above, according to the present invention, the operation of causing the replacement gas in the replacement gas filling container to flow into the air conditioner can be performed only by connecting this connection device. Further, according to the present invention, the operation of recovering the replacement gas from the air conditioner into the replacement gas recovery container can be performed simply by connecting the connection device. Further, according to the present invention, it is possible to open the replacement gas filling device or the replacement gas recovery container simply by connecting the replacement gas filling device or the replacement gas recovery container to the connection device. Therefore, since both the replacement gas filling container and the replacement gas recovery container can be used, the operation of once replacing the air in the air conditioner with the replacement gas and then recovering the replacement gas is performed by this connection. It can be performed simply by using an apparatus. As described above, according to the present invention, it is not necessary to operate a vacuum pump as in the related art, and even when a replacement gas is used, the valve can be used without using a large container having a valve. It is possible to use a single-use replacement gas filling device or a replacement gas recovery container that does not have a single-use type, so that the workability of the air conditioner can be improved. Also,
ADVANTAGE OF THE INVENTION According to this invention, since it connects by fitting a male screw part and a female screw part, reliable connection can be performed. Also,
According to the present invention, the screwing can be performed without rotating the connection device itself by providing the connecting means with the screw portion formed on the inner peripheral surface and rotatably provided on the outer circumference of the connection port. Therefore, the workability during construction is excellent. Further, according to the present invention, since the connection can be performed by the coupling, the work can be easily performed without the necessity of screwing or the like.
Further, according to the present invention, the connecting means is a male screw part to be fitted with a female screw part formed on the opening side inner periphery of the holder holding the replacement gas filling container or the replacement gas recovery container. In addition, the container can be stably inserted, and the possibility of leakage or the like can be reduced. Further, according to the present invention, the connection means can be stably inserted into the ring member which is in contact with the inner periphery on the opening side of the holder for holding the replacement gas filling container or the replacement gas recovery container. At the same time, the possibility of leakage and the like can be reduced, and work can be easily performed without screwing or the like. Further, according to the present invention, the container can be easily opened by using a needle-shaped member having a sharp inclined surface at the tip as the opening means. Further, according to the present invention, a reliable opening can be easily performed by using a needle-shaped member having an outer diameter smaller than the diameter of the thin film portion as the opening means. Further, according to the present invention, the passage cross-sectional area of the through hole of the opening means is made larger than the minimum passage cross-sectional area of the passage other than the needle-like member, so that pressure loss at the opening means can be reduced, The filling or collection of the replacement gas can be performed efficiently. Further, according to the present invention, as the opening means, a needle-like member having an inclined surface formed at the tip is used, and the inclined surface is replaced with the replacement gas charging container in a state where the replacement gas filling container or the replacement gas collecting container is connected. Or, by arranging it in the mouth of the replacement gas recovery container, it is possible to reduce pressure loss at the opening means, secure airtightness, and efficiently perform filling or recovery of the replacement gas. . Further, according to the present invention, after the mouth of the replacement gas filling container or the replacement gas recovery container is sealed by the sealing member, the needle-shaped member is configured to open the thin film portion sealing the mouth. By doing so, airtightness can be ensured, and filling or collection of the replacement gas can be performed efficiently. Further, according to the present invention, by arranging the seal member including a material having elasticity, airtightness can be ensured, and the filling or collection of the replacement gas can be performed efficiently. Further, according to the present invention, by providing the connection means for connecting the refrigerant charge port and the opening means for opening the refrigerant charge port, the refrigerant charge port is opened by simply connecting the connection device to the refrigerant charge port. can do.
Further, according to the present invention, the opening means is a valve stem that pushes up and opens the valve core in the refrigerant charge port, so that the valve core can be easily opened by the connecting operation. Further, according to the present invention, a sufficient flow rate can be obtained by moving the valve core by 1 mm or more by the valve stem. Further, according to the present invention, the first connection port and the second connection port are formed by the same member without being connected by another member, thereby reducing the passage volume in the connection device. Therefore, the influence of air existing in the passage can be reduced. Further, according to the present invention, since the first connection port and the second connection port are formed so as to be coaxially arranged, the passage volume in the connection device can be further reduced. The effect of existing air can be reduced. Further, according to the present invention, the first connection port and the second connection port are formed so as to have an angle so that their respective axial directions are different from each other. Gas filling or collecting operation can be easily performed. Further, according to the present invention, the first connection port and the second connection port are connected by the flexible connection portion, so that the filling or collection operation of the replacement gas in a particularly narrow space can be easily performed. Can be. Further, according to the present invention, a one-time use type filling device having no open / close valve can be provided, and the filling container can be reduced in size. Further, according to the present invention, it is possible to provide a single-use type recovery device having no open / close valve, and to reduce the size of the recovery container. Further, according to the present invention, by closing a part of the gas communication passage with the end face, it is possible to suppress a momentary pressure rise at the beginning of opening. Further, according to the present invention, it is possible to suppress an instantaneous pressure increase in the initial stage of opening due to the passage resistance of the gas passage hole. Further, according to the present invention, the replacement gas recovery connection device is configured to be connectable to the replacement gas charging connection device, so that the connection of the outdoor unit side of the air conditioner can be performed without removing the replacement gas. And can be collected. Further, according to the present invention, by closing a part of the gas communication passage with the end face, it is possible to suppress a momentary pressure rise at the beginning of opening. Further, according to the present invention, it is possible to suppress an instantaneous pressure increase in the initial stage of opening due to the passage resistance of the gas passage hole. Further, according to the present invention, the replacement gas recovery connection device is configured to be connectable to the replacement gas charging connection device, so that the connection of the air conditioner to the outdoor unit can be performed without disconnecting the replacement gas. And can be collected. Further, according to the present invention, the replacement gas charging connection device is configured to be connectable to the replacement gas recovery connection device, so that the connection of the air conditioner on the outdoor unit side can be performed without removing the replacement gas. When the replacement gas is collected, the replacement gas filling connection device is removed, so that the replacement gas filling connection device can suppress the instantaneous pressure rise at the beginning of opening. A configuration can be employed. Further, according to the present invention, the replacement gas-filled container can be safely removed by increasing the inner peripheral diameter by adjusting the portion of the inner peripheral surface of the connecting means that contacts the seal member to the outer periphery of the seal member. it can.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a refrigeration cycle of an air conditioner used in an embodiment of the present invention, in which a replacement gas filling container is connected.

FIG. 2 is a configuration diagram of a refrigeration cycle of an air conditioner used in an embodiment of the present invention, in a state where a replacement gas recovery container is connected.

FIG. 3 is a sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to another embodiment of the present invention.

FIG. 6 is a sectional view taken along line XX shown in FIG. 5;

7 is a diagram showing the relationship between A / B when the depth dimension of the gas passage hole 30F shown in FIGS. 5 and 6 is A and the cross-sectional area is B, and the instantaneous pressure at the beginning of opening.

FIG. 8 is a sectional view of a main part showing a schematic configuration of a connection device for a replacement gas-filled container according to another embodiment of the present invention.

FIG. 9 is a sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to an embodiment of the present invention.

FIG. 10 is a sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to another embodiment of the present invention.

FIG. 11 is a sectional view of a main part showing a schematic configuration of a connection device for a replacement gas recovery container according to another embodiment of the present invention.

FIG. 12 is a sectional view of a main part showing a schematic configuration of a replacement gas charging connection device and a replacement gas recovery connection device according to another embodiment of the present invention.

FIG. 13 is a sectional view of a main part showing a schematic configuration of a replacement gas charging connection device and a replacement gas recovery connection device according to another embodiment of the present invention.

FIG. 14 is a characteristic diagram of a movement amount of a valve core of a refrigerant charge port and a flow rate passing through a seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Throttle device 5 Dryer 6 Indoor heat exchanger 7 Liquid-side two-way valve 8 Gas-side three-way valve 8b Refrigerant charge port 9 Connection pipe 10 Connection pipe 20 Replacement gas filling container 30 Connection device 30A First connection port 30B Second connection port 30F Gas passage hole 31 Connecting means 32 Connecting means 33 Screw 34 Female screw 35 Valve stem 36 Sealing member 37 Opening means 37A Through hole 37B Inclined surface 37C Counterbore 37D End face 38 Connection Port 39 Connection Port 40 Replacement Gas Recovery Container 50 Connection Device 50A First Connection Port 50B Second Connection Port 51 Connecting Means 52 Connecting Means 53 Female Thread 54 Female Thread 55 Valve Rod 56 Seal Member 57 Opening Means

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yukio Watanabe 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shigehiro Sato 1006 Kadoma, Kazuma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. (72) Inventor Jin Mogi 1006, Kadoma Kadoma, Kadoma, Osaka Pref. EA02 GA30 3L054 BC01 BC05

Claims (31)

[Claims] 1. A first connection port connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of an air conditioner, and a replacement gas filling container for air conditioner construction. A second connection port, the connection device for the construction of an air conditioner that allows the replacement gas in the replacement gas filling container to flow from the refrigerant charge port, wherein the second connection port includes: A connection device for constructing an air conditioner, comprising: connecting means for connecting the replacement gas-filled container; and opening means for opening the replacement gas-filled container. 2. A first connection port connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of an air conditioner, and a replacement gas recovery container for air conditioner construction. A second connection port, the connection device for air conditioner construction to absorb the replacement gas from the refrigerant charge port into the replacement gas recovery container, wherein the second connection port, A connection device for constructing an air conditioner, comprising: connecting means for connecting a replacement gas recovery container; and opening means for opening the replacement gas recovery container. 3. A first connection port connected to a refrigerant charge port side of a pipe connection valve element provided in an outdoor unit of an air conditioner, a replacement gas filling container for air conditioner construction and a replacement gas filling container. A second connection port connected to the gas recovery container,
A connection device for installing an air conditioner, wherein the replacement gas in the replacement gas filling container is caused to flow from the refrigerant charge port, or the replacement gas is absorbed from the refrigerant charge port into the replacement gas recovery container. A connecting means for connecting the replacement gas filling container or the replacement gas recovery container to the second connection port, and an opening means for opening the replacement gas filling container or the replacement gas recovery container. A connection device for air conditioner construction, comprising: 4. The connection means according to claim 1, wherein said replacement means is a female screw part fitted with a male screw part formed on the outer periphery of a base of said replacement gas filling container or said replacement gas recovery container. The connection device for air conditioner construction according to any one of claims 1 to 3. 5. The connecting means according to claim 1, wherein said connecting means is a cap nut having a threaded portion formed on an inner peripheral surface and rotatably provided on an outer periphery of said connection port. The connection device for air conditioner installation according to any one of the above. 6. The method according to claim 1, wherein said connecting means is a ring member which comes into contact with an outer periphery of a base of said replacement gas filling container or said replacement gas recovery container.
The connection device for air conditioner construction according to any one of the above. 7. The method according to claim 1, wherein the connecting means is a male screw part to be fitted with a female screw part formed on an inner periphery of an opening side of the holder for holding the replacement gas filling container or the replacement gas recovery container. The connection device for air conditioner installation according to any one of claims 1 to 3, characterized in that: 8. The apparatus according to claim 1, wherein said connecting means is a ring member which abuts on an inner periphery of an opening side of a holder for holding said replacement gas filling container or said replacement gas recovery container. 3. The connection device for air conditioner installation according to any one of 3. 9. The air conditioner according to claim 1, wherein the opening means is a needle-like member having a through hole and having a sharp inclined surface at a tip. Connection device for machine construction. 10. A needle-like member having a through-hole having an outer diameter smaller than a diameter of a thin film portion sealing an opening of the replacement gas filling container or the replacement gas recovery container. The connection device for air conditioner installation according to any one of claims 1 to 3, wherein: 11. The opening means comprises a needle-like member having a through-hole, and a passage cross-sectional area of the through-hole is larger than a minimum passage cross-sectional area of a passage other than the needle-like member. The connection device for constructing an air conditioner according to any one of claims 1 to 3. 12. The opening means is a needle-shaped member having a through-hole and having an inclined surface at a tip, and in a state where the replacement gas filling container or the replacement gas recovery container is connected.
The connection device for air conditioner construction according to any one of claims 1 to 3, wherein the inclined surface is arranged in an opening of the replacement gas filling container or the replacement gas recovery container. 13. The opening means is formed of a needle-like member having a through-hole, a seal member is provided on the outer periphery of the needle-like member, and the opening of the replacement gas filling container or the replacement gas recovery container is closed. The air conditioner construction according to any one of claims 1 to 3, wherein, after being sealed by the seal member, the needle-shaped member opens the thin film portion sealing the mouth. Connecting device. 14. A seal member for sealing between the replacement gas filling container and the replacement gas recovery container, wherein the seal member includes a material having elasticity. The connection device for installing an air conditioner according to any one of claims 1 to 3. 15. A first connection port connected to a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of an air conditioner, and a replacement gas filling container for air conditioner construction. A connection device for air conditioner construction, comprising: a second connection port, wherein the replacement gas in the replacement gas-filled container is caused to flow from the refrigerant charge port. A connection device for construction of an air conditioner, comprising: connecting means for connecting a refrigerant charge port; and opening means for opening the refrigerant charge port. 16. A first connection port connected to a refrigerant charge port of a pipe connection valve provided in an outdoor unit of an air conditioner, and connected to a replacement gas recovery container for air conditioner construction. A connection port for installing an air conditioner, comprising: a second connection port, wherein the replacement gas is absorbed from the refrigerant charge port into the replacement gas recovery container, wherein the first connection port includes the refrigerant. A connection device for constructing an air conditioner, comprising: a connecting means for connecting a charge port; and an opening means for opening the refrigerant charge port. 17. A first connection port connected to a refrigerant charge port of a pipe connection valve element provided in an outdoor unit of an air conditioner, a replacement gas filling container and a replacement gas for air conditioner installation. A second connection port connected to the collection container,
A connection device for installing an air conditioner, wherein the replacement gas in the replacement gas filling container is caused to flow from the refrigerant charge port, or the replacement gas is absorbed from the refrigerant charge port into the replacement gas recovery container. A connection device for connecting the refrigerant charge port; and an opening device for opening the refrigerant charge port, wherein the first connection port is provided with a connection device for constructing an air conditioner. 18. The connection device for air conditioner installation according to claim 15, wherein the opening means is a valve stem for pushing and opening a valve core in the refrigerant charge port. . 19. The valve core according to claim 1, wherein
The connection device for construction of an air conditioner according to claim 18, wherein the connection device is moved by at least mm. 20. The apparatus according to claim 1, wherein the first connection port and the second connection port are formed by the same member without being connected by another member. Or the connection device for air conditioner construction according to any one of claims 15 to 17. 21. The connection device according to claim 20, wherein the first connection port and the second connection port are formed so as to be coaxially arranged. 22. The apparatus according to claim 1, wherein the first connection port and the second connection port are arranged at an angle so that their respective axial directions are different from each other. The connection device for construction of an air conditioner according to claim 3 or any one of claims 15 to 17. 23. The method according to claim 1, wherein the first connection port and the second connection port are connected by a flexible connection portion. The connection device for air conditioner construction described in Crab. 24. A replacement gas or refrigerant is charged by connecting to the connection device for air conditioner installation according to any one of claims 1, 3, 15, and 17. And filling container. 25. A replacement gas or refrigerant is recovered by connecting to the connection device for air conditioner installation according to any one of claims 2, 3, 16, and 17. And a collection container. 26. The method according to claim 1 or claim 3, wherein
A method for constructing an air conditioner, comprising charging or collecting a replacement gas or a refrigerant using the connection device for constructing an air conditioner according to any one of claims 5 to 17. 27. A connection port connected to a replacement gas filling container for air conditioner construction, wherein the replacement gas in the replacement gas filling container is connected to a pipe connection provided in an outdoor unit of the air conditioner. A connection device for air conditioner construction to flow from a refrigerant charge port of a valve body, wherein the connection port includes a needle-shaped member that opens a port of the replacement gas-filled container with an inclined surface at a tip, The member has a through hole from the front end to the rear end and has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts is provided with a gas passage hole communicating with the refrigerant charge port, A connection device for construction of an air conditioner, wherein a part of the gas communication passage is closed by an end face of an outer periphery of the counterbore portion of the needle-like member. 28. A connection port connected to a replacement gas filling container for air conditioner installation, wherein the replacement gas in the replacement gas filling container is connected to a pipe connection provided in an outdoor unit of the air conditioner. A connection device for air conditioner construction to flow from a refrigerant charge port of a valve body, wherein the connection port includes a needle-shaped member that opens a port of the replacement gas-filled container with an inclined surface at a tip, The member has a through hole from the front end to the rear end and has a counterbore at the rear end, and a member to which the rear end side of the needle-shaped member abuts is provided with a gas passage hole communicating with the refrigerant charge port, When the depth dimension of the gas passage hole is A and the cross-sectional area is B, A / B is 10 or more, and a connection device for air conditioner construction. 29. A pipe provided with a connection port for connecting to a replacement gas filling container for air conditioner construction, and connecting the replacement gas in the replacement gas filling container to an outdoor unit of the air conditioner. A replacement gas filling connection device that flows in from a refrigerant charge port of the connection valve element, and a connection port that is connected to a replacement gas recovery container for air conditioner construction, the replacement gas being supplied from the refrigerant charge port. A replacement gas recovery connection device to be absorbed by the replacement gas recovery container, wherein the replacement gas recovery connection device can be connected to the replacement gas charging connection device. For connecting devices. 30. A pipe provided with a connection port for connection to a replacement gas recovery container for air conditioner installation, wherein replacement gas is provided in the replacement gas recovery container in an outdoor unit of the air conditioner. A replacement gas recovery connection device that flows in from a refrigerant charge port of the connection valve element, and a connection port that is connected to a replacement gas filling container for air conditioner construction, and a replacement gas flows from the refrigerant charge port. An air conditioner construction, comprising: a replacement gas filling connection device that is absorbed by the replacement gas filling container; and the replacement gas filling connection device can be connected to the replacement gas recovery connection device. For connecting devices. 31. A connection port connected to a replacement gas filling container for air conditioner installation, wherein the replacement gas in the replacement gas filling container is connected to a pipe connection provided in an outdoor unit of the air conditioner. A connection device for constructing an air conditioner that flows from a refrigerant charge port of a valve body, wherein the connection port is configured to open a port of the replacement gas-filled container with an inclined surface at a tip, and the needle-shaped member. A sealing member that presses the member from the distal end side, the inner peripheral diameter of a portion where the outer periphery of the seal member contacts the inner peripheral surface of the connection port is larger than the inner peripheral diameter of the connection port entrance portion, An outer diameter of the seal member is larger than an inner diameter of the inlet portion of the connection port.