JP2000310460A - Service valve with seal mechanism for air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a service valve for an air conditioner that can connect a service valve and a connection pipe in a one-touch manner without air purging or evacuation. A fluid introduction port is arranged below a valve chamber in a valve body, and a fluid outlet is arranged on one side of the valve chamber, and a valve body provided in the valve body is provided. In a service valve for an air conditioner in which the fluid inlet 2 of the service valve that can open and close the fluid inlet 2 by operation is connected and fixed to the outdoor unit 80 side, by providing a seal mechanism 20 to the fluid outlet 6, When connecting the distal end of the connection pipe having the seal mechanism at the distal end on the indoor unit 88 side to the fluid outlet 6, both seal mechanisms are automatically released while maintaining airtightness with the outside. A service valve with a seal mechanism for an air conditioner that can easily connect the outdoor unit side and the indoor unit side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a service valve used when installing or relocating a separation type air conditioner.

[0002]

2. Description of the Related Art Conventionally, a separation type air conditioner including an outdoor unit 80 and an indoor unit 88 has a structure as shown in FIG.
A heat exchanger 82 is provided on the outdoor unit 80 side. A service valve 84 on the liquid side (1/4 ") is provided on one side of the heat exchanger 82 via a capillary tube 83, and a four-way valve is provided on the other side of the heat exchanger 82. Switching valve 87, compressor 8
1 and a gas side (3/8 ") service valve 85, connecting the first piping hole 1 and the third piping hole 3 of the four-way switching valve 87 to the compressor 81 and connecting the second piping hole 2 to the heat exchanger 82. And the fourth pipe hole 4 is connected to a service valve 85 on the gas side. The two service valves 84 and 85 are provided so as to be exposed to the outside of the outdoor unit 80, and are respectively provided to the indoor unit 88. The pipes were connected to both ends of the heat exchanger 89 by flare connection.

[0003] The switching operation of the four-way switching valve 87 provided in the outdoor unit 80 switches the flow of the refrigerant to switch between cooling and heating.

The service valve 84 on the liquid side and the service valve 8 on the gas side used in the conventional air conditioner described above.
Reference numeral 5 denotes a type shown in Japanese Utility Model Laid-Open Publication No. 4-43773, in which a fluid inlet 2 provided with a valve seat 1 at an upper end is disposed below as shown on the right side of FIG. The upper part of the seat is used as a valve chamber 3, a female screw 4 is formed on the inner peripheral surface thereof, an upper opening 5 is provided above the valve chamber, and a fluid outlet 6 and a test opening 7 are arranged on both sides of the valve chamber 3. The valve body 3 of the valve body 8 is provided with a valve body 10 at a lower end, a male screw 11 screwed into the female screw 4 at a central body, and a hexagonal hole 12 for rotation operation at an upper central portion. A valve rod 14 having an O-ring 13 on the outer periphery thereof, which is in pressure contact with the inner peripheral wall of the upper opening 5, is screwed, and a valve core 15 is mounted in the test opening 7. A flare 17 is formed at the tip and an external screw 18 is provided on the outer periphery.

When the liquid side service valve 84 closes the valve chamber 3, the lower fluid inlet 2 is connected to the outdoor unit 8.
0 is connected to the capillary tube 83 in a state where the refrigerant is filled in the pipe, and the lower fluid inlet 2 is switched to the four-way switching inside the outdoor unit 80 with the gas side service valve 85 also closing the valve chamber 3. It is connected to the fourth pipe hole 4 of the valve 87, and the distal end of the fluid outlet 6 on the side is formed in the flare 17 and the outer thread 18 is provided on the outer periphery. The stopper was fixed with a nut (neither is shown).

When installing the air conditioner, as is well known, an outdoor unit 80 and an indoor unit 88 are installed, and the nut and blind plug provided at the fluid delivery port 6 of the service valve 84 on the liquid side are removed. The fluid outlet 6 is connected to one of the heat exchangers 89 in the indoor unit 88 by a pipe 90 using the flare 17 of the fluid outlet 6, and the fluid outlet 6 of the service valve 85 on the gas side is also provided there. Remove the nut and blind plug from the fluid outlet 6
Is connected to the other side of the heat exchanger 89 by a pipe 91 by using the flare 17 part.
Since the connecting portion of 91 does not have a sealing mechanism, air enters both the pipes 90 and 91 and the heat exchanger 89.

Therefore, after connecting the outdoor unit 80 and the heat exchanger 89 in the indoor unit 88 with both pipes 90 and 91, it is necessary to discharge the air in the heat exchanger 89 and both connection pipes 90 and 91. is there.

The heat exchanger 89 and both connecting pipes 90, 9
1 as means for discharging air from
Although there is air purging or evacuation by the refrigerant in the inside, air discharge by air purging has recently become the mainstream because priority is given to shortening the working time.

However, recently, in order to protect the ozone layer, which is a global environmental problem, and to prevent global warming, it is necessary to minimize the release of refrigerant (mainly, CFC) into the atmosphere, although it is very small.

Therefore, it has recently been absolutely necessary to exhaust the air in the heat exchanger 89 in the indoor unit 88 and the connection pipes 90 and 91 by vacuum evacuation instead of the conventional efficient air purge. It is a condition.

On the other hand, although the service valve of the form disclosed in Japanese Utility Model Laid-Open No. 4-43773 is not used,
A fluid coupling used in the refrigeration field has a seal mechanism on both the male side and the female side, and when connecting both, the fluid that automatically releases both seal mechanisms and airtightly connects both Joint (JP-B-42-6114)
Has existed conventionally.

[0012]

However, the evacuation described above requires a longer working time than air purging, and the number of air conditioners that can be installed per day is reduced. In addition, a vacuum pump or the like is required for evacuation. Work efficiency is poor because special equipment and jigs and tools are required, and a construction power supply for operating the vacuum pump is also required.

[0013] The fluid joint provided with the seal mechanism described above is used in most air conditioners at present, as shown in FIG.
However, there is a problem that the fluid outlet 6 of the service valve cannot be directly used.

Further, when the air conditioner is relocated, it is impossible to recover the refrigerant in the outdoor unit 80 by pump down, and even if this refrigerant is recovered in another container, a great deal of cost and time are required. In addition, evacuation of the entire refrigerant flow path and re-injection of refrigerant refrigeration oil were indispensable.

[0015]

The inventor of the present invention has provided a seal mechanism similar to the male side of the conventional fluid joint on the fluid outlet side of the conventional service valve, and provided the seal mechanism at the tip of the pipe. This problem has been solved by adopting a technical means of coupling the female coupler provided in the indoor unit, and the technical means comprises an indoor unit and both connecting pipes 90 and 9.
It is needless to say that the present invention can be applied to connection with 1.

That is, a first aspect of the present invention is that the fluid inlet 2 is arranged below the valve chamber 3 in the valve body 8 and the fluid outlet 6 is arranged on one side of the valve chamber 3. The fluid inlet 2 of the service valve which can open and close the fluid inlet 2 by operating the valve body 10 provided in the inside of the outdoor unit 80
In the service valve for an air conditioner connected and fixed to the side, the sealing mechanism 20 is directly or indirectly connected to the fluid outlet 6.
Is provided, when the distal end of the connection pipe having the seal mechanism at the distal end on the indoor unit 88 side is connected to the fluid outlet 6, both seal mechanisms are automatically operated while maintaining airtightness with the outside. This is a service valve with a seal mechanism for an air conditioner, which is easily released so that the outdoor unit side and the indoor unit side can be easily connected.

A second aspect of the present invention is that a fluid inlet port 2 having a valve seat 1 at an upper end is disposed below, and an upper part of the valve seat is used as a valve chamber 3 and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided above the valve chamber, and a fluid outlet 6 is provided on one side of the valve chamber 3.
The valve body 10 is provided at the lower end in the valve chamber 3 of the valve body 8 provided with
And a valve rod 14 having a male screw 11 screwed into the female screw 4 at the central body portion and an O-ring 13 press-contacted with the inner peripheral wall of the upper opening 5 at the upper outer periphery thereof, and the fluid feed port is provided. 6, a sealing mechanism 2 comprising a tubular sleeve 22 provided with an outwardly pointed cutter 21 at its tip and a diaphragm 23 disposed close to the outside of the pointed cutter 21.
0 is a service valve with a seal mechanism for an air conditioner, wherein 0 is provided.

A third aspect of the present invention is that a fluid inlet 2 having a valve seat 1 at an upper end is disposed below, and an upper part of the valve seat is used as a valve chamber 3 and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided above the valve chamber, and a fluid outlet 6 is provided on one side of the valve chamber 3.
The valve body 10 is provided at the lower end in the valve chamber 3 of the valve body 8 provided with
And a valve rod 14 having a male screw 11 screwed to the female screw 4 at the center body thereof and an O-ring 13 pressed against the inner peripheral wall of the upper opening 5 at the upper outer periphery thereof. 6, a sealing mechanism 2 comprising a tubular sleeve 22 having an outwardly pointed cutter 21 at its tip and a diaphragm 23 disposed close to the outside of the pointed cutter 21.
A service valve with a seal mechanism for an air conditioner, characterized in that a separate connecting pipe 27 having an inside therein is fixedly connected to the end of the fluid outlet 6 via a flare packing 28. is there.

A fourth aspect of the present invention is that a fluid inlet 2 having a valve seat 1 at an upper end is disposed below, and an upper part of the valve seat is used as a valve chamber 3 and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided above the valve chamber, and a fluid outlet 6 is provided on one side of the valve chamber 3.
The valve body 10 is provided at the lower end in the valve chamber 3 of the valve body 8 provided with
And a valve rod 14 having a male screw 11 screwed into the female screw 4 at the central body portion and an O-ring 13 press-contacted with the inner peripheral wall of the upper opening 5 at the upper outer periphery thereof, and the fluid feed port is provided. A sealing mechanism 2 including a cylindrical sleeve 22 having an outwardly pointed cutter 21 at the tip thereof and a diaphragm 23 disposed close to the outside of the pointed cutter 21.
0 is connected to the connection pipe of the separation type air conditioner by connecting the service valve with the seal mechanism for the air conditioner, the diaphragm 23 is broken and the sealing mechanism 2
After the zero is released, the service valve is used to perform the pipe connection operation again using the service valve, and has a connection portion with the fluid outlet 6 at one end and a flare portion at the other end. This is a connecting tool for use in a service valve with a seal mechanism for an air conditioner, which is provided with a spanner hook that can be screwed into the outer periphery.

[0020]

In the service valve with a seal mechanism for an air conditioner according to the present invention, when the air conditioner is installed, the heat exchanger 89 and the pipes 90, 91 connected to both sides thereof are installed.
In a state where the inside is filled with a vacuum or the same refrigerant as the refrigerant in the outdoor unit 80, the distal ends of both the pipes 90 and 91 are made couplers having a sealing mechanism by a diaphragm, and the couplers at both distal ends of the pipes are replaced by the service. Fluid outlet for valve 6
The pipe connection between the outdoor unit 80 and the indoor unit 88 can be performed without air from anywhere.

Therefore, when installing the air conditioner, there is no need to perform vacuuming or air purging, so that installation work can be performed in a short time.

The seal mechanism 20 is connected to a separate connecting pipe 27.
Also, in the case where it is provided at the fluid outlet 6 of the service valve, the pipe connection between the outdoor unit 80 and the indoor unit 88 can be performed by the same means as described above without air entering from anywhere.

When the air conditioner is relocated, if the air conditioner is operated with the liquid side service valve 84 closed, the refrigerant can be collected on the outdoor unit 80 side. If the flare 17 is removed from the fluid outlet 6 of the service valve, the flare 17 at the tip of the conventional fluid outlet 6 can be used, so that the pipe connection can be made again by a conventional method.

Further, when the air conditioner is relocated when the seal mechanism 20 is provided in the fluid outlet 6 of the service valve, the air conditioner can be operated by closing the liquid side service valve 84 and operating the air conditioner. Refrigerant can be collected on the unit 80 side, then the connection pipe is removed, and the connecting tool 34 is attached to the distal end portion of the fluid outlet 6 using a connecting tool 34 provided with a flare 17 and fixed and connected. Flare 17 of connector 34
By using the part, it is possible to reconnect the pipes in a conventional manner.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a longitudinal sectional side view showing one embodiment of a service valve with a seal mechanism for an air conditioner according to the present invention, and FIG. 2 is a piping side provided with a seal mechanism. FIG. 3 is a longitudinal sectional side view showing a state in which a leading end portion and a fluid outlet end portion are associated with each other, and FIG. 3 is a longitudinal sectional view showing a state in which a piping side end portion is connected and fixed to the fluid outlet of the service valve.

A service valve with a seal mechanism for an air conditioner according to the present invention shown in FIG. 1 has a fluid inlet 2 provided with a valve seat 1 at an upper end below, and an upper part of the valve seat as a valve chamber 3. A female screw 4 is formed on the inner peripheral surface thereof, an upper opening 5 is provided above the valve chamber, and a fluid outlet 6 and a test opening 7 are arranged on both sides of the valve chamber 3. In the valve chamber 3, a valve body 10 is provided at a lower end, a male screw 11 screwed to the female screw 4 is provided at a central body portion, a hexagonal hole 12 for rotation operation is provided at an upper central portion, and the upper opening 5 is provided at an outer periphery. A valve rod 14 having an O-ring 13 which is in pressure contact with the inner peripheral wall of the valve is screwed, a valve core 15 is mounted in the test opening 7, and an outward pointed cutter 21 is provided in the fluid outlet 6. A cylindrical sleeve 22 provided at the tip and a pointed cutter 21 are disposed close to the outside. The sealing mechanism 20 comprising a diaphragm 23 directly has become integrally provided form was.

That is, the seal mechanism 20 provided in the fluid delivery port 6 includes a metal tubular sleeve 22 having a tip with an outward pointed cutter 21 shown in FIGS.
The pointed cutter 21 includes a diaphragm 23 made of a thin metal plate disposed close to the outside of the pointed cutter 21. The pointed cutter 21 has a V-shaped rib having a cylindrical sleeve 2 at the rear end of the opening.
2 is provided integrally with the tip of the diaphragm 23
Is a bottomed cylinder having a diameter larger than that of the tubular sleeve 22.

In the drawing, reference numeral 24 denotes a fixing ring for the diaphragm 23, and reference numeral 25 denotes a metal seal having a rhombic cross section.

On the other hand, as shown on the left side of FIG. 2, a tubular body 31 having a diaphragm 30 made of a thin metal plate at the tip is fixed to the tips of the pipes 90 and 91.
A tubular nut 3 rotatably provided on an outer peripheral portion of the tubular body 31;
Numeral 2 denotes a coupler provided in a state where it cannot be moved, and this tubular body 31 is inserted between the tubular sleeve 22 provided in the fluid outlet 6 and the tubular portion of the diaphragm 23. Although possible, the coupler having the seal structure is a conventionally known coupler.

Accordingly, the tubular nut 32 at the tip of the pipe
Is screwed into an external screw 18 provided on the outer periphery of the fluid outlet 6, so that the pointed cutter 21 at the tip of the tubular sleeve 22 breaks through both the diaphragms 23 and 30 and the metal seal 25 forms the tubular body 31. By contacting the shoulder 33, as shown in FIG. 3, the fluid delivery port 6 and the tubular body 31 at the tip on the pipe side can be connected in a gas-tight manner without air from the outside.

In the first embodiment, the service valve in which the test opening 7 in which the valve core 15 is mounted is disposed on one side of the valve chamber 3 has been described. Is not always necessary.

Embodiment 2 FIG. 4 is a longitudinal sectional side view showing another embodiment of a service valve with a seal mechanism for an air conditioner according to the present invention, and FIG. 5 is a pipe-side tip having a seal mechanism and a fluid. FIG. 6 is a vertical sectional side view showing a state in which a piping-side distal end is connected and fixed to a fluid outlet of a service valve in correspondence with a connection pipe at a distal end of the outlet.

In the service valve with a seal mechanism for an air conditioner according to the present invention shown in FIG. 4, a fluid inlet 2 having a valve seat 1 at an upper end is disposed below the service valve, and an upper portion of the valve seat is provided. Is formed as a valve chamber 3, a female screw 4 is formed on the inner peripheral surface thereof, an upper opening 5 is provided above the valve chamber 3, and a fluid outlet 6 and a test opening 7 are arranged on both sides of the valve chamber 3. In the valve chamber 3 of the valve body 8, a valve body 10 is provided at a lower end, a male screw 11 screwed to the female screw 4 is provided at a central body portion, and a hexagonal hole 12 for rotating operation is provided at an upper central portion and the outer periphery is provided. Valve rod 1 provided with an O-ring 13 for pressing against the inner peripheral wall of the upper opening 5
4, a valve core 15 is mounted in the test opening 7, and a cylindrical sleeve 22 having an outwardly directed pointed cutter 21 at its tip and the pointed cutter Diaphragm 23 arranged close to the outside of 21
Separate connecting pipe 2 having a sealing mechanism 20 made of
7 is placed between the end of the fluid outlet 6 and the flare packing 28.
It is connected and fixed via the.

That is, the seal mechanism 20 provided in the separate connecting pipe 27 has a cylindrical sleeve 22 having the same outwardly pointed cutter 21 at the end as shown in the first embodiment. And a diaphragm 23 disposed close to the outside of the pointed cutter 21. The connecting pipe 27 has a hexagonal nut 29 at a rear portion serving as a connecting portion with the fluid outlet 6. And an outer thread 19 on the outer periphery of the front part, into which the tubular nut 32 at the pipe tip can be screwed.

It is to be noted that the pipe-side tip portion is, of course, a coupler having the same form as that shown in the left side of FIG. 2 used in the first embodiment.

Accordingly, the tubular nut 32 at the tip of the pipe
Is screwed into an external thread 19 provided on the outer periphery of the front part of the connecting pipe 27, so that the cylindrical sleeve 22
Both diaphragms 2 are formed by the pointed cutter 21 at the tip.
As shown in FIG. 6, the fluid delivery port 6 of the service valve and the tubular body 31 at the tip of the pipe can be connected in a gas-tight manner through the connecting pipe 27 without air from the outside. .

In the second embodiment, the service valve in which the test opening 7 in which the valve core 15 is mounted is arranged on one side of the valve chamber 3 has been described. Is not always necessary.

Embodiment 3 FIG. 9 shows a connection of a service valve with a seal mechanism for an air conditioner in which the seal mechanism is released according to the present invention, the end having a fluid outlet and a flare portion used in combination with the service valve. FIG. 10 is a partial longitudinal sectional side view corresponding to the tool, and FIG. 10 shows a state in which the seal mechanism is released, and a connection tool having a flare portion is mounted and connected and fixed to the fluid outlet of the service valve with the seal mechanism for the air conditioner. It is a longitudinal side view of a state.

A service valve with a seal mechanism for an air conditioner according to the present invention shown in FIG. 10 has a fluid inlet port 2 provided with a valve seat 1 at the upper end below, as in the case of the first embodiment. The upper portion of the valve seat is used as a valve chamber 3, a female screw 4 is formed on the inner peripheral surface thereof, and an upper opening 5 is provided above the valve chamber 3, and a fluid outlet 6 and a test opening 7 are provided on both sides of the valve chamber 3.
The valve body 10 is provided at the lower end in the valve chamber 3 of the valve body 8 provided with
And a male screw 11 screwed into the female screw 4 at the central body, a hexagonal hole 12 for rotation operation at the upper central part, and an outer periphery press-contacted with the inner peripheral wall of the upper opening 5.
A valve rod 14 having a ring 13 is screwed therein, a valve core 15 is mounted in the test opening 7, and a cylindrical sleeve 22 having an outwardly pointed cutter 21 at the tip in the fluid outlet 6. And a sealing mechanism 20 composed of a diaphragm 23 disposed close to the outside of the pointed cutter 21 and directly provided integrally therewith. The diaphragm 23 of the service valve is broken and the sealing mechanism 20 is destroyed. 20
Is released, the connecting member 34 having the flare 17 is connected and fixed to the tip of the fluid outlet 6.

That is, the sealing mechanism 20 in the fluid delivery port 6 has a cylindrical sleeve 22 provided at the tip thereof with the same outwardly pointed cutter 21 as shown in the first embodiment.
And a diaphragm 23 disposed close to the outside of the pointed cutter 21. As shown in FIGS. 9 and 10, the diaphragm 23 is in a state of being pierced, and the form of the connecting member 34 is And a hexagonal nut 29 serving as a connecting portion with the fluid outlet 6 at the rear portion, and an external thread 18 and a flare 17 on the outer periphery of the front portion.

The rear part of the connecting member 34 is of the same form as that shown in the left side of FIG. 2 used in the first embodiment, and has no diaphragm. Things.

Therefore, when the air conditioner installed using the seal mechanism of the service valve with the air conditioner seal mechanism is relocated, after the pump is down, the connection connected to the fluid delivery port 6 is made. If the pipe is removed and the connecting tool 34 is attached to the fluid outlet 6, the conventional pipe can be flared to connect the indoor unit and the outdoor unit again with the conventional technique. Because the length can be set freely according to the size, clean work can be done even when relocating.

In the third embodiment, the service valve having the test opening 7 in which the valve core 15 is mounted on one side of the valve chamber 3 has been described. Is not always necessary.

[0044]

The service valve with a seal mechanism for an air conditioner according to the present invention has a seal mechanism provided directly or indirectly through a connecting pipe at the fluid outlet. By screwing and connecting the tubular nut at the pipe-side tip, which is a coupler having a seal mechanism at the tip, the outdoor unit and the indoor unit of the air conditioner can be air-tightly connected and fixed without air from the outside.

Therefore, when installing the air conditioner, there is no need to perform vacuuming or air purging, so that installation work can be performed in a short time. In addition, when the air conditioner is relocated, the refrigerant is supplied to the outdoor unit using the service valve. It can be relocated relatively easily as before, without releasing refrigerant into the atmosphere, and the conventional flare connection can be achieved by connecting a connector with a flare section on one side at the time of relocation. Becomes possible.

In the case where the sealing mechanism is provided indirectly via the connecting pipe at the fluid outlet (the second embodiment), a separate connecting pipe provided with the sealing mechanism is connected to the existing service valve. In addition to this, if the connecting pipe is replaced, the pipe connection of the air conditioner can be performed again with the same work contents, thereby improving the workability of re-construction accompanying relocation.

Further, when the air conditioner installed using the seal mechanism of the service valve with a seal mechanism for an air conditioner according to the present invention is relocated, a mode is used in which a connecting tool is used in combination (the third embodiment). If) is adopted, the conventional pipe pipe can be flared so that the pipe connection can be performed again without excess or shortage of the pipe length, so that clean work can be achieved.

As described above, the service valve with an air conditioner seal mechanism according to the present invention is an epoch-making invention which is economically and globally excellent not only at the time of initial installation but also at the time of relocation. It is extremely useful.

[0049]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of an example of a service valve with a seal mechanism according to the present invention.

FIG. 2 is a partial longitudinal sectional side view showing a pipe-side tip provided with a sealing mechanism and a fluid outlet end of a service valve in correspondence with each other.

FIG. 3 is a longitudinal sectional side view showing a state in which a pipe side tip is connected and fixed to a fluid outlet of a service valve.

FIG. 4 is a longitudinal sectional side view of another example of the service valve with a seal mechanism according to the present invention.

FIG. 5 is a partial longitudinal sectional side view showing a pipe-side tip provided with a seal mechanism and a connecting pipe at a fluid sending-out tip in a corresponding manner.

FIG. 6 is a longitudinal sectional side view of a state in which a fluid sending-out end of a service valve and a piping-side end are connected and fixed via a connecting pipe.

FIG. 7 is a perspective view of a metal tubular sleeve provided with a pointed cutter at the tip.

FIG. 8 is a circuit diagram of a conventional air conditioner (at the time of cooling).

FIG. 9 is a partial vertical sectional side view showing a fluid outlet end portion of a service valve in which a seal mechanism is broken in the present invention and a connecting tool having a flare portion used in combination with the service valve.

FIG. 10 is a longitudinal sectional side view showing a state in which a connecting member provided with a flare portion and a fluid outlet end of a service valve in which a seal mechanism in the present invention is broken is connected and fixed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Seal mechanism 21 Pointed cutter 22 Cylindrical sleeve 23 Diaphragm 27 Connecting pipe 28 Flare packing 29 Hexagon nut 30 Diaphragm 31 Tubular body 32 Tubular nut 33 Shoulder part 34 Connector

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sadami Masahara 1006 Kazuma Kadoma, Kazuma, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 3H052 BA25 CC03 CD02 EA11

Claims (4)

[Claims] A fluid inlet (2) is disposed below a valve chamber (3) in a valve body (8) and a fluid outlet (6) is provided on one side of the valve chamber (3).
A service valve for an air conditioner in which the fluid inlet 2 of the service valve which can open and close the fluid inlet 2 by operating a valve body 10 provided in the valve body 8 is connected and fixed to the outdoor unit 80 side. In the above, by providing the seal mechanism 20 directly or indirectly at the fluid outlet 6, the distal end of the connection pipe having the seal mechanism at the distal end on the indoor unit 88 side is connected to the fluid outlet 6. A service with a seal mechanism for an air conditioner, characterized in that both the seal mechanisms are automatically released while maintaining airtightness with the outside, so that the outdoor unit side and the indoor unit side can be easily connected. valve. 2. A fluid inlet 2 having a valve seat 1 at an upper end thereof is disposed below, and an upper part of the valve seat is used as a valve chamber 3, and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided, a valve body 10 is provided in a lower end of a valve body 3 of a valve body 8 in which a fluid outlet 6 is disposed on one side of the valve chamber 3, and a female screw 4 is provided in a central body. O-ring 1 which has a male screw 11 screwed into
3 is screwed into the fluid feed port 6,
An air conditioner comprising: a cylindrical sleeve 22 having an outwardly pointed cutter 21 at its tip; and a sealing mechanism 20 comprising a diaphragm 23 disposed close to the outside of the pointed cutter 21. Service valve with seal mechanism for machine. 3. A fluid inlet 2 having a valve seat 1 at an upper end thereof is disposed below, and an upper portion of the valve seat is used as a valve chamber 3 and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided, a valve body 10 is provided in a lower end of a valve body 3 of a valve body 8 in which a fluid outlet 6 is disposed on one side of the valve chamber 3, and a female screw 4 is provided in a central body. O-ring 1 which has a male screw 11 screwed into
3 is screwed together with the valve rod 14 provided with
Separate connecting pipe internally provided with a sealing mechanism 20 including a cylindrical sleeve 22 provided with an outwardly pointed cutter 21 at the tip and a diaphragm 23 disposed close to the outside of the pointed cutter 21. 27. A service valve with a seal mechanism for an air conditioner, wherein 27 is connected and fixed to the front end of the fluid outlet 6 via a flare packing 28. 4. A fluid inlet 2 having a valve seat 1 at an upper end thereof is disposed below, and an upper part of the valve seat is used as a valve chamber 3 and a female screw 4 is formed on an inner peripheral surface thereof. An upper opening 5 is provided, a valve body 10 is provided in a lower end of a valve body 3 of a valve body 8 in which a fluid outlet 6 is disposed on one side of the valve chamber 3, and a female screw 4 is provided in a central body. O-ring 1 which has a male screw 11 screwed into
3 is screwed into the fluid feed port 6,
A seal for an air conditioner having therein a sealing mechanism 20 including a cylindrical sleeve 22 having an outwardly pointed cutter 21 at a tip thereof and a diaphragm 23 disposed close to the outside of the pointed cutter 21. After connecting the service valve with the mechanism to the connection pipe of the separation type air conditioner, the diaphragm 23 is broken and the seal mechanism 20 is released, and then the pipe connection operation is performed again using the service valve. With a seal mechanism for an air conditioner, which has a connection portion with the fluid outlet 6 at one end and a flare portion at the other end and a screwable spanner hook portion on the outer periphery for use at the time of use. Connector used for service valve.