JPH09292046A - Closing valve for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sealing between an operation port inner circumferential edge and a filling box from being failed without largely changing the construction when a large shock is applied to the filling box at operating to open the valve by providing a deformation absorbing groove on the gland for allowing deformation of a regulating part when the contact part of a valve body is brought in contact with the regulating part. SOLUTION: When a valve body 6 is operated to open by an operation part 6a into the full opening position and the contact face 6b of the valve body 6 is brought in contact with the regulating part 10d of a filling box 10, and the filling box 10 receives impact from the valve body 6, the regulating part 10d of the filing box 10 is deformed by the impact so as to crush a deformation absorbing groove 10c. Hereby, even if the filling box 10 receives large impact from the valve body 6, the impact is absorbed by deformation of the regulating part 10d, it does not reach the place sealing the operation port inner circumferential edge of a valve case 1, and the place is not deformed. Because the deformation absorbing groove 10c only is formed on an existing filling box 10, it is unnecessary to largely change the construction of a closing valve A, and the cost is hardly required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a closing valve disposed in the middle of a refrigerant pipe of a separate type air conditioner or the like.

[0002]

2. Description of the Related Art Heretofore, this type of shut-off valve has been widely used in air conditioners.
The one disclosed in Japanese Patent Publication No. 20775 is known. This is a valve that is opened in a direction in which the machine inside piping connection port and the operation port face each other, and the machine outside piping connection port is substantially orthogonal to the straight line connecting the machine side piping connection port and the operation port. A valve body that has an operation part operable from the operation port in the case and opens and closes the in-machine piping connection port by operating the operation part is arranged in a direction of a straight line connecting the in-machine piping connection port and the operation port. It is fitted so that it can be screwed along and is attached and fixed to the operating port of the valve case so as to make an airtight seal between the inner peripheral surface of the operating port and the outer peripheral surface of the operating portion of the valve body. During transportation of the air conditioner, etc., the above-mentioned valve element closes the inside pipe connection port to seal the refrigerant gas to the outdoor unit side, and after connecting the indoor unit to the outside pipe connection port during installation of the air conditioner. By opening the valve body by screwing, Outer pipe connecting port and communicated with, and is capable of circulating refrigerant gas in the outdoor unit side to the indoor unit.

Further, in this type of closing valve, when the pipe connection port on the inside of the machine is fully opened, the contact portion of the valve element is brought into contact with the regulating portion of the packing box to close the fully opened position of the valve element. By controlling with a box, the operator who performs the opening operation of the valve disc can know that the pipe connection port inside the machine is fully opened. That is, if the operator stops the operation when the contact surface of the valve element contacts the lower end surface of the packing box and the operation torque suddenly increases, the machine interior piping connection port is fully opened. .

[0004]

In the shut-off valve as described above, a problem occurs if the operator slowly opens the valve element and stops the operation when the valve element comes into contact with the packing box. Absent.

However, if the valve body is operated vigorously while ignoring the contact state with the packing box, or if a large force is applied after the valve body is contacted with the packing box even if the valve body is slowly operated, the packing box will be damaged. Takes a considerable impact. In this way, when a large impact force is applied to the packing box, the entire packing box is deformed, and the portion where the inner peripheral surface of the operation opening of the valve case and the outer peripheral surface of the operating portion of the valve body are sealed is also deformed. As a result, there is a problem in that a defective seal occurs between the inner peripheral edge of the operation opening of the valve case and the packing box, and the refrigerant gas leaks, and there is room for improvement.

Even if a large impact force is applied to the packing box in this way, the packing box may be strengthened so as not to be deformed, but it is necessary to make the packing box considerably large or change the structure. Occurs, which is disadvantageous in terms of cost.

The present invention has been made in view of the above points, and an object of the present invention is to improve the structure for restricting the full opening of the valve body of the closing valve as described above. , To prevent the occurrence of a seal failure between the inner peripheral edge of the operation opening of the valve case and the packing box when a large impact force is applied to the packing box during the valve opening operation without largely changing the structure of the closing valve. Especially.

[0008]

In order to achieve the above object, according to the present invention, a deformation absorbing groove for allowing deformation of the packing box or the valve body is provided at a position where the packing box or the valve body abuts each other. did.

Specifically, in the invention of claim 1, as shown in FIGS. 1 and 2, the in-machine piping connection port (2) and the operation port (3) opened so as to face each other, and the above-mentioned. Machine outside pipe connection port (4) opened in a direction substantially orthogonal to a straight line connecting the machine inside pipe connection port (2) and the operation port (3)
A valve case (1) having: and a valve case (1) screwably fitted in the valve case (1) along a direction of a straight line connecting the in-machine pipe connection port (2) and the operation port (3), and A valve body (6) having an operation part (6a) operable from the operation port (3), and opening and closing the in-machine pipe connection port (2) by operating the operation part (6a), and the valve case. The operation port (3) of (1) is attached and fixed so as to form an airtight seal between the inner peripheral surface of the operation port (3) and the outer peripheral surface of the operation portion (6a) of the valve body (6), When the body (6) is screwed in the opening direction, it comes into contact with the contact portion (6b) of the valve body (6), and a regulation portion (10d) that regulates the fully opened position is formed in the packing box (10). It is premised on a closing valve for an air conditioner equipped with and.

Deformation that allows the regulating portion (10d) to deform when the contact portion (6b) of the valve body (6) abuts against the regulating portion (10d) in the packing box (10). An absorption groove (10c) is provided.

With this configuration, when the contact portion (6b) of the valve body (6) comes into contact with the restriction portion (10d) of the packing box (10), the deformation absorption of the restriction portion (10d) is allowed. Since the groove (10c) is provided in the packing box (10), the valve body (6) is operated to open by the operating portion (6a) to the fully open position, and the valve body (6) is restricted to the restricting portion (10d) of the packing box (10). Valve body (6)
The contact surface (6b) of the valve body (6b) comes into contact, and the packing box (10) forms the valve body (6).
When the impact force is received from the packing box (1
The restriction part (10d) of 0) deforms so as to crush the deformation absorption groove (10c). Thus, even if the packing box (10) receives a large impact force from the valve body (6), the impact force is absorbed by the deformation of the restricting portion (10d), and the packing box (1
The impact force is not transmitted to the portion of the valve case (1) that seals the inner peripheral edge of the operation port in (0), and the portion is not deformed.

Further, since the deformation absorbing groove (10c) is only formed in the existing packing box (10), there is no need to largely change the structure of the closing valve from the conventional one, and the cost is hardly required. .

Therefore, when a large impact force is applied to the packing box (10) without largely changing the structure of the conventional closing valve, the inner peripheral edge of the operation opening of the valve case (1) and the packing box (10). It is possible to prevent the occurrence of poor sealing.

According to a second aspect of the invention, in the construction of the first aspect of the invention, the regulating portion (10d) of the packing box (10) has a protrusion (10b) corresponding to the deformation absorbing groove (10c). To

Since the protrusion (10b) is provided in the restriction portion (10d) corresponding to the deformation absorbing groove (10c), the contact portion (6b) of the valve body (6) is packed in the packing box. (1
When contacting the restriction part (10d) of 0), the contact part (6b) first contacts the projection part (10b) of the restriction part (10d) of the packing box (10). That is, the valve body (6) always comes into contact with the side of the regulating portion (10d) of the packing box (10) that corresponds to the deformation absorbing groove (10c). As a result, the restricting portion (10d) of the packing box (10) is more easily deformed, and the impact force is reliably absorbed. Therefore, it is possible to effectively prevent the occurrence of a sealing failure between the inner peripheral edge of the operation opening of the valve case (1) and the packing box (10).

According to the invention of claim 3, as shown in FIG.
In a direction substantially orthogonal to a straight line connecting the in-machine pipe connection port (2) and the operation port (3) opened so as to face each other and the above-mentioned in-machine pipe connection port (2) and the operation port (3) In the direction of a straight line connecting the valve case (1) having the opened external pipe connection port (4) and the internal pipe connection port (2) and the operation port (3) in the valve case (1). It has an operation part (6a) that is screwed along and that can be operated from the operation port (3), and opens and closes the machine side pipe connection port (2) by operating the operation part (6a). The valve body (6), the operating port (3) of the valve case (1), the inner peripheral surface of the operating port (3) and the operating portion (6a) of the valve body (6).
Attached and fixed so as to make an airtight seal with the outer peripheral surface,
When the valve body (6) is screwed in the opening direction, it comes into contact with the contact portion (6b) of the valve body (6), and a regulation part (10d) for regulating the fully opened position is formed in the packing box (10). ) And an air conditioner closing valve with and.

The valve body (6) is attached to the valve body (6).
Deformation absorbing groove (6c) that allows the contact portion (6b) to deform when the contact portion (6b) of the contact portion contacts the regulating portion (10d).
Is provided.

As a result, when the valve body (6) is fully opened, the contact portion (6b) of the valve body (6) restricts the regulating portion (10) of the packing box (10).
When abutting against d), the abutting portion (6b) of the valve body (6) is deformed in the direction of crushing the deformation absorbing groove (6c). Since the impact force is absorbed by the deformation of the contact portion (6b), the packing box (10) itself is not deformed by the impact force. Therefore, also in this case, the same operational effect as that of the first aspect of the invention can be obtained.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the contact portion (6b) of the valve body (6) has a deformation absorbing groove (6).
It has a protrusion (6d) corresponding to c).

As a result, the contact portion (6) of the valve body (6) is
When b) comes into contact with the regulating portion (10d) of the packing box (10), the side of the abutting portion (6b) corresponding to the deformation absorbing groove (6c) of the valve body (6) is blocked. Be sure to contact the box (10). Therefore, the same function and effect as the second aspect can be obtained.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 2 shows a closing valve (A) for an air conditioner according to an embodiment of the present invention, (1) is a valve case, and a pipe inside the outdoor unit is provided at a lower portion of the valve case (1). An in-machine pipe connection port (2) for connecting (25) and an operation port (3) are opened in the upper part so as to face each other in the vertical direction. On the side of the valve case (1), there is an outside pipe connection port (4) for connecting a pipe (26) outside the outdoor unit (inside the indoor unit side) to the inside pipe connection port (2) and the operation port ( 3)
It is opened in the horizontal direction so as to be substantially orthogonal to the straight line connecting the lines. A taper-shaped valve seat (2a) having a smaller diameter toward the lower side (outside of the valve case (1)) is formed at the upper part of the machine-side pipe connection port (2). Further, a female screw portion (1b) is formed inside the valve case (1) from the operation port (3) to the vicinity of the machine side pipe connection port (2). A charging port (18) for vacuuming or gas charging the inside of the valve case (1) is provided at a position facing a side of the outside pipe connection port (4) on the side of the valve case (1). Has been.

Inside the valve case (1) is a valve body (6).
So that the lower end of the valve body (6) is seated on the valve seat (2a) formed on the upper part of the machine-inside pipe connection port (2) to close the machine-side pipe connection port (2). Has become. This valve body (6) has a male threaded portion (6e) screwed to the female threaded portion (1b) of the valve case (1) at the lower part thereof, and has the machine side pipe connection port (2) and the operation port (3). ) Can be screwed in the direction of the straight line connecting the two, and is fitted into the valve case (1) from the operation port (3). An operating portion (6a) extending in the vertical direction is formed on the upper portion of the valve body (6). This operation part (6a)
A rectangular operation shaft (7) is fitted inside the shaft, and the tip of the operation shaft (7) projects outward from the operation port (3). Then, by rotating the tip end portion of the operation shaft (7) with a spanner or the like, the valve body (6) is screwed up to open the inside pipe connection port (2), or is lowered to inside the machine. The pipe connection port (2) can be closed. That is, it is possible to open and close the in-machine piping connection port (2) from the operation port (3). While the air conditioner is being transported, the pipe (25) is connected to the inside pipe connection port (2) to connect the shutoff valve (A) and the outdoor unit, but the pipe (26) is It is not connected to the exterior pipe connection port (4), and the shutoff valve (A) is not connected to the indoor unit. At this time, the lower end of the valve body (6) is seated on the valve seat (2a) and the in-machine pipe connection port (2) is closed, and the refrigerant gas is sealed to the outdoor unit side.

At the operation port (3) of the valve case (1),
A substantially cylindrical packing box (10) has an outer peripheral male screw portion (1
0e) is attached and fixed in a state of being screwed with the female screw portion (1b). A seal portion (10a) having a diameter larger than that of the operation port (3) is provided at a substantially central portion of the packing box (10) in the vertical direction, and the seal portion (10a) has an inner diameter that increases upward. By contacting the operation port peripheral edge portion (1a) of the valve case (1) from above, the operation port peripheral edge portion (1a) and the seal portion (10a) are hermetically sealed. On the other hand, the operating portion (6a) of the valve body (6) is arranged in a penetrating state on the inner peripheral side of the packing box (10), and the outer peripheral surface of the operating portion (6a) and the packing box (10). A seal member (13) consisting of an O-ring that hermetically seals the portion is fitted between the inner peripheral surface and the inner peripheral surface. The sealing member (13) is supported at the lower side by a portion projecting inward of the packing box (10), and at the upper side by a substantially cylindrical O-ring retainer (14) and a C-shaped retaining ring (15) to prevent the seal member (13) from coming off. It is in a broken state. As a result, the packing box (10) provides an airtight seal between the inner peripheral surface of the operation port (3) and the outer peripheral surface of the operating portion (6a) of the valve body (6).

Further, as shown in an enlarged view in FIG. 1, the lower end of the packing box (10) has a valve body (6) when the valve body (6) is screwed in the opening direction, as described later. Are abutted against each other to form a restricting portion (10d) that restricts the fully opened position, and the lower end of the restricting portion (10d) is located on the male screw part (10e) side, that is, on the side corresponding to the deformation absorbing groove (10c) described later. Is provided with a protrusion (10b) protruding in an arc shape in cross section.

A horizontal plane portion connecting the lower end portion of the operation portion (6a) of the valve body (6) and the upper end portion of the male screw portion (6e) is a projection portion (10b) in the regulating portion (10d) of the packing box (10).
The valve case (1) is connected to the indoor unit by the pipe (26) when the air conditioner is installed, and then the valve body (6) is screwed. The upper surface of the abutting part (6b) is restricted by the regulating part (10) of the packing box (10) when the machine inner pipe connecting port (2) is fully opened.
It is adapted to come into contact with the protrusion (10b) in d). When the inside pipe connection port (2) is fully opened, it is completely connected to the outside pipe connection port (4), and the refrigerant gas on the outdoor unit side is circulated to the indoor unit to enable operation of the air conditioner. Becomes When the valve body (6) is once opened during the installation of the air conditioner, the valve body (6) is always kept open except when there is a failure.

Further, the regulating portion (10) of the packing box (10) is
d) A deformation absorbing groove (10c) is horizontally formed on the outer circumference of the male screw portion (10e) in the vicinity of the regulating portion (10).
The protrusion (10b) of (d) contacts the contact portion (6) of the valve body (6).
b) When the packing box (10) receives the force from the valve body (6) due to abutment of the upper surface, the restriction portion (10d) of the packing box (10) is allowed to deform. That is, the protrusion (10
When b) is pushed by the abutting part (6b) of the valve body (6), the male screw part (10e) side of the restricting part (10d) is deformed upward so as to crush the deformation absorbing groove (10c).

A cap (20) is screwed onto the threaded portion on the outer periphery of the upper end of the packing box (10), and the cap (2) is
The upper end opening of the packing box (10) is blocked by 0).
In addition, a valve core (23) that constantly closes the charge port (18) is fitted into the charge port (18),
A cap (21) is screwed onto the threaded portion on the outer periphery of the charge port (18) of the valve case (1) to close the charge port (18).

After connecting the pipe (26) to the outside pipe connection port (4) of the air conditioner closing valve (A) having the above structure, the valve body (6) is operated to operate the inside pipe connection port. (2)
In order to fully open the container, first, remove the cap (20) screwed to the upper end of the packing box (10) and operate the operation port (3).
The tip end of the operation shaft (7) protruding from the valve shaft (7) is rotated by a wrench or the like to screw up the valve body (6). When the upper surface of the contact portion (6b) of the valve body (6) comes into contact with the protrusion (10b) of the regulation portion (10d) of the packing box (10), the operating torque rapidly increases, and the opening operation is performed there. To cancel. Then, the inside pipe connection port (2) is in a fully opened state, and the operation is completed.

At this time, the valve body (6) is operated vigorously ignoring the contact state with the packing box (10), or even if it is operated slowly, a large force is exerted after contacting the protrusion (10b). When applied, a large impact force is applied to the packing box (10),
In the structure in which the deformation absorbing groove (10c) is not provided as in the conventional case, the seal portion (10a) of the packing box (10) is deformed to be located between the valve case (1) and the operation port peripheral edge portion (1a). Poor sealing may occur. However, in this embodiment, since the deformation absorbing groove (10c) is formed in the male screw part (10e) near the regulating part (10d) of the packing box (10), the impacting force causes the regulating part (10d) to move upward. The deformation absorbing groove (10c) is deformed so as to be crushed. For this reason,
The impact force is absorbed by the restriction portion (10d), is not transmitted to the seal portion (10a) above the deformation absorbing groove (10c), and the seal portion (10a) is not deformed. Therefore, the airtightness between the seal portion (10a) of the packing box (10) and the operation port peripheral edge portion (1a) of the valve case (1) is maintained, and no sealing failure occurs.

Further, the regulating portion (10d) of the packing box (10)
On the male screw part (10e) side, that is, the deformation absorbing groove (1
The protrusion (10b) is provided on the side corresponding to 0c), so that the deformation absorbing groove (10c) is formed in the packing box (10) by the upper surface of the contact portion (6b) of the valve body (6). Since the holding side is always pushed, the deformation absorbing groove (10c) is more easily deformed, and the impact force is reliably absorbed. Therefore, the packing box (10) and the operation port peripheral portion (1) of the valve case (1)
It is possible to surely prevent the defective seal between a).

Further, the impact force is so large that the packing box (1
Even if the restriction part (10d) of 0) is plastically deformed, the opening operation of the valve element (6) is usually operated only once when the room cooler is installed, so there is almost no problem.

Therefore, in the above embodiment, the deformation absorbing groove (10) is formed on the male screw portion (10e) of the existing packing box (10).
Since only c) is formed, it is almost the same as the structure of the conventional closing valve, and only the packing box is replaced with the conventional closing valve, and all other parts can be commonly used. Therefore, while reducing the cost, the valve body (6)
The seal portion (10a) of the packing box (10) can be prevented from being deformed by any operation of the packing box (10), and the packing box (10) and the operation port peripheral portion (1a) of the valve case (1) can be prevented. It is possible to prevent a defective seal between them.

In the above embodiment, the deformation absorbing groove (10
Although c) is provided on the outer circumference of the male screw portion (10e) of the packing box (10), a similar deformation absorbing groove may be provided on the inner peripheral surface of the packing box (10). At that time, the protrusion (10b) on the lower surface of the restriction portion (10d) corresponds to the deformation absorbing groove and the restriction portion (10b).
d) It may be provided on the inner peripheral surface side of the lower surface so that the deformation absorbing groove can be easily deformed.

(Second Embodiment) FIG. 3 shows a second embodiment of the present invention.
(Note that the same portions as those in FIG. 1 are denoted by the same reference numerals and detailed description thereof will be omitted, and only other different portions will be described). 6)
It was installed in.

That is, in this embodiment, the first embodiment
Similarly, the deformation absorbing groove (6c) is provided on the outer periphery of the male screw part (6e) near the lower part of the contact part (6b) of the packing box (10),
On the male screw portion (6e) side of the upper surface of the contact portion (6b), that is, on the side corresponding to the deformation absorbing groove (6c), a protrusion (6d) protruding upward in an arc shape is formed. on the other hand,
The lower surface of the regulating portion (10d) of the packing box (10) is a horizontal surface.

Therefore, in this embodiment, when the protrusion (6d) in the contact portion (6b) of the valve body (6) contacts the lower surface of the regulating portion (10d) of the packing box (10), the valve body ( The male screw portion (6e) side of the contact portion (6b) of 6) is deformed downward so as to crush the deformation absorbing groove (6c). Therefore, since the impact force is absorbed by the deformation of the contact portion (6b), the packing box (10) itself is not deformed by the impact force. Therefore, the same functions and effects as those of the first embodiment can be obtained.

[0037]

As described above, according to the first aspect of the invention, the inside pipe connecting port and the operating port face each other, and the outside pipe connecting line connects the inside pipe connecting port and the operating port with each other. In the valve case opened in each direction, and a valve element that is screwably fitted along the direction of the straight line connecting the machine-inside pipe connection port and the operation port to open and close the machine-side pipe connection port, and the operation port. It is attached and fixed by fitting and screwing to hermetically seal between the inner peripheral surface of the operating port and the outer peripheral surface of the operating portion of the valve body, and contacts the contact portion of the valve body when the valve body is screwed in the opening direction. For a closing valve having a packing box that is in contact with and regulates the fully opened position, a deformation of the regulation part when the contact part of the valve body contacts the regulation part in the packing box A deformation absorbing groove that allows the above is provided. Further, in the invention of claim 3, the valve body is provided with the deformation absorbing groove that allows the contact portion to deform when the contact portion contacts the regulating portion. Therefore, according to these inventions, when a large impact force is applied to the packing box without largely changing the structure of the conventional closing valve, it is possible to prevent the seal defect between the inner peripheral edge of the operation opening of the valve case and the packing box. Can be planned.

According to the second aspect of the present invention, the regulation portion of the packing box has a protrusion corresponding to the deformation absorbing groove. Also,
In the invention of claim 4, the abutment portion of the valve body has a protrusion corresponding to the deformation absorbing groove. Therefore, according to these inventions, it is possible to reliably prevent a defective seal between the inner peripheral edge of the operation opening of the valve case and the packing box.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a main part of a packing box.

FIG. 2 is a cross-sectional view showing a shutoff valve for an air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a view corresponding to FIG. 2 showing a second embodiment.

[Explanation of symbols]

 (A) Closed valve (1) Valve case (1a) Operation port peripheral part (1b) Female thread part (2) Machine inside pipe connection port (3) Operation port (4) Machine outside pipe connection port (6) Valve body (6a) ) Operation part (6b) Abutment part (6c) Deformation absorption groove (6d) Protrusion part (6e) Male screw part (7) Operating shaft (10) Packing box (10a) Seal part (10b) Protrusion part (10c) Deformation absorption Groove (10d) Regulator (10d) Male thread

Claims (4)

[Claims] 1. A straight line connecting the in-machine pipe connection port (2) and the operation port (3) opened so as to face each other, and the straight line connecting the in-machine pipe connection port (2) and the operation port (3). A valve case (1) having a machine outside pipe connection port (4) opened in a substantially orthogonal direction, and a machine case inside pipe connection port (2) and an operation port (3) in the valve case (1). It has a manipulation part (6a) that is screwed along the direction of the connecting straight line and that can be manipulated from the manipulation port (3). By operating the manipulation part (6a), the machine interior pipe connection port The valve body (6) for opening and closing (2), and the operation port (3) for the operation port (3) of the valve case (1).
The inner peripheral surface of the valve body and the outer peripheral surface of the operating portion (6a) of the valve body (6) are attached and fixed so as to provide an airtight seal, and when the valve body (6) is screwed in the opening direction, the valve body ( 6) contact part (6)
b) is abutting against the regulating portion (10) for regulating the fully opened position.
In the closing valve for an air conditioner, which comprises a packing box (10) in which d) is formed, an abutting portion (6b) of the valve body (6) is attached to the packing box (10).
When it comes into contact with the regulating portion (10d), the regulating portion (10d)
A closing valve for an air conditioner, which is provided with a deformation absorbing groove (10c) that allows the deformation of d). 2. The shutoff valve for an air conditioner according to claim 1, wherein the restricting portion (10d) of the packing box (10) has a deformation absorbing groove (10).
A closing valve for an air conditioner, which has a protrusion (10b) corresponding to c). 3. A straight line connecting the in-machine pipe connection port (2) and the operation port (3) opened so as to face each other, and the straight line connecting the in-machine pipe connection port (2) and the operation port (3). A valve case (1) having a machine outside pipe connection port (4) opened in a substantially orthogonal direction, and a machine case inside pipe connection port (2) and an operation port (3) in the valve case (1). It has a manipulation part (6a) that is screwed along the direction of the connecting straight line and that can be manipulated from the manipulation port (3). By operating the manipulation part (6a), the machine interior pipe connection port The valve body (6) for opening and closing (2), and the operation port (3) for the operation port (3) of the valve case (1).
The valve body (6) is attached and fixed so as to provide an airtight seal between the inner peripheral surface of the valve body and the outer peripheral surface of the operating portion (6a) of the valve body (6).
Is screwed in the opening direction, the contact portion (6) of the valve body (6)
b) is abutting against the regulating portion (10) for regulating the fully opened position.
In a closing valve for an air conditioner, which comprises a packing box (10) in which d) is formed, an abutment portion (6b) of the valve body (6) is provided with a regulating portion (10d) on the valve body (6). A closing valve for an air conditioner, which is provided with a deformation absorbing groove (6c) which allows the contact portion (6b) to be deformed when abutting against the air conditioner. 4. The closing valve for an air conditioner according to claim 3, wherein the contact portion (6b) of the valve body (6) has a protrusion (6d) corresponding to the deformation absorbing groove (6c). A closing valve for air conditioners.