JP5388992B2 - Piping seal device - Google Patents

Description

  The present invention relates to a piping sealing device connected to an outdoor unit such as an air conditioner.

  The air conditioner is divided into an outdoor unit and an indoor unit, and the outdoor unit and the indoor unit are connected by a refrigerant pipe. The outdoor unit is also provided with a compressor, a condenser, an expansion valve, and a control board for controlling air conditioning by an air conditioner. Moreover, the indoor unit is provided with an evaporator.

  A refrigerant (air conditioner gas) is used for the air conditioner. For example, in the cooling operation, the refrigerant is compressed by the compressor and sent to the condenser in a high-temperature and high-pressure state. The condenser cools and liquefies the refrigerant. Next, the liquefied refrigerant is sent to the expansion valve, the refrigerant is depressurized by the expansion valve so as to be easily vaporized, and then sent to the evaporator of the indoor unit through the refrigerant pipe connecting the expansion valve and the indoor unit. . The liquefied refrigerant is heated and vaporized at room temperature inside the refrigerant pipe passing through the evaporator, deprives the indoor heat, passes through the refrigerant pipe connecting the evaporator and the outdoor unit, and returns to the compressor of the outdoor unit. Cycle to return.

  That is, the cooling operation is performed by depriving the room of heat when the refrigerant is vaporized. The outdoor unit needs to be provided outside the room in order to release the heat of the room taken away by the refrigerant or the heat generated by the condenser to the outside. Moreover, refrigerant | coolant piping is inserted in the hole formed in the panel, and an opening clearance gap will arise between the hole formed in the panel and the outer peripheral surface of refrigerant | coolant piping.

  The outdoor unit is placed in a natural environment such as rain, snow, or wind, and if rain, snow, dust, etc. enters the outdoor unit through the opening gap, the wiring on the control board will be short-circuited, causing the circuit board to burn out or breaker. Will cause problems such as running. Therefore, it is necessary to provide a mechanism for preventing rain, snow, dust, and the like from entering the outdoor unit.

A conventional structure for preventing rain, snow, dust and the like from entering from the refrigerant pipe insertion portion of the outdoor unit of the air conditioner will be described with reference to FIGS.
20 is an exploded perspective view illustrating the structure of a conventional pipe seal device, FIG. 21 is a perspective view showing a state of an outdoor unit to which the conventional pipe seal device is attached, and FIG. 22 is a front view of the panel surface of FIG. FIG. 23 is a cross-sectional view taken along the line XXIII-XXIII in FIG.

In FIG. 20, the pipe seal device 101 includes an upper seal device 111, a lower seal device 112, and a tapping screw 109.
The upper seal device 111 is formed by a rectangular flat plate-shaped upper mounting plate portion 102a and semi-cylindrical upper grip portions 113a and 113b (a shape obtained by dividing a cylinder by a surface including an axis). The upper mounting plate portion 102a has two semicircular upper notches 104a formed on one edge. Further, the upper grip portions 113a and 113b are formed in a semi-cylindrical shape having an inner diameter that matches the inner diameter of the upper notch 104a of the upper mounting plate portion 102a. Further, the upper gripping portions 113a and 113b project integrally with the rear surface side of the upper mounting plate portion 102a so that the axial direction thereof is orthogonal to the rear surface of the upper mounting plate portion 102a and the inner diameter thereof is matched with the inner diameter of the upper notch 104a. It is installed.

  The interval between the upper grips 113a and 113b corresponds to the interval between the refrigerant pipes 8a and 8b inserted into the panel 7 described later. Further, seven punch marks 103 for screw insertion are formed on the upper mounting plate portion 102a.

In the lower seal device 112, two semicircular lower notches 104b having the same inner diameter as the upper notch 104a are formed at one edge of a rectangular flat plate-like lower mounting plate portion 102b. The lower grips 113c and 113d are formed in a semi-cylindrical shape having an inner diameter that matches the inner diameter of the lower notch of the lower mounting plate 102b. Further, the lower gripping portions 113c and 113d are integrally projected on the back surface side of the lower mounting plate portion 102b so that the axial direction thereof is orthogonal to the back surface of the lower mounting plate portion 102b and the inner diameter thereof is matched with the inner diameter of the lower notch 104b. It is installed.
The interval between the lower grips 113c and 113d corresponds to the interval between the refrigerant pipes 8a and 8b inserted into the panel 7.

Next, the mounting structure of the pipe sealing device 101 will be described with reference to FIGS.
In FIG. 21, refrigerant pipes 8 a and 8 b are inserted into the outdoor unit 6 through holes formed in the panel 7 of the outdoor unit 6 installed in the cradle 5.

  As shown in FIGS. 22 and 23, an opening gap 10 is formed between the hole formed in the panel 7 and the inserted refrigerant pipe 8a. Although not shown, similarly, an opening gap 10 is also formed between the hole formed in the panel 7 and the inserted refrigerant pipe 8b.

In addition, an elastic sealing material 4 such as butyl rubber is wound around the insertion portion of the refrigerant pipes 8a and 8b on the surface side of the panel 7.
The portions of the refrigerant pipes 8a and 8b around which the sealing material 4 is wound are covered with the upper gripping portions 113a and 113b and the lower gripping portions 113c and 113d of the upper sealing device 111 and the lower sealing device 112.

  The upper sealing device 111 is screwed and fixed to the outdoor unit 6 using a tapping screw 109 in a state where the surface of the upper mounting plate portion 102a and the surface of the panel 7 are in close contact with each other. Screw fixing is made through the upper mounting plate 102a and the panel 7 at the positions of the seven punch marks 103. Moreover, the sealing material 4 covered with the upper grips 113a and 113b is in a state of being pressed in the radial direction of the refrigerant pipes 8a and 8b, and the sealing material 4 is elastically deformed, and the outer peripheral surfaces of the refrigerant pipes 8a and 8b It is kept in close contact.

Further, the lower seal device 112 is fixed to the outdoor unit 6 with screws using a tapping screw 109 in a state where the surface of the lower mounting plate portion 102b and the surface of the panel 7 are in close contact with each other. The screws are fixed in accordance with the positions of the seven punch marks 103 and penetrate the lower mounting plate portion 102b and the panel 7.
Further, the sealing material 4 covered with the lower gripping portions 113c and 113d is in a state of being pressed in the radial direction of the refrigerant pipes 8a and 8b, and the sealing material 4 is elastically deformed, and the outer peripheral surface of the refrigerant pipes 8a and 8b. The close contact state is maintained.

  Therefore, by using the pipe sealing device 101 including the upper sealing device 111, the lower sealing device 112, and the tapping screw 109 described above, the inner peripheral surfaces of the upper gripping portions 113a and 113b and the lower gripping portions 113c and 113d are connected to the refrigerant pipe 8a. , 8b is maintained in close contact with the entire circumference of the sealing material 4 wound around. Therefore, the opening gap 10 is closed by the pipe seal device 101, that is, the inside and outside of the outdoor unit 6 are isolated, and rain, snow, dust, and the like can be prevented from entering from the opening gap 10.

  However, in the conventional pipe seal apparatus 101, when opening and closing the panel 7 for inspection of the outdoor unit 6 or the like, the pipe seal apparatus 101 has to be removed, and the tapping that has fixed the pipe seal apparatus 101 to the outdoor unit 6 is performed. Screw 109 must be removed. When the tapping screw 109 is repeatedly removed and attached every time the outdoor unit 6 is inspected, screw holes formed in the panel 7, the upper mounting plate portion 102a, and the lower mounting plate portion 102b expand. Therefore, when the screws are fastened again, a mounting failure occurs in which the surface of the panel 7 cannot be brought into close contact with the surfaces of the upper mounting plate portion 102a and the lower mounting plate portion 102b, and the panel 7 and the upper mounting plate portion 102a, or the lower mounting plate. There was a problem that rain, snow, dust, etc. entered the outdoor unit 6 through the gap of the portion 102b.

  The present invention has been made to solve the above problems, and can be supported and attached to the pipe inside the outdoor unit without using a tapping screw, and further inside the outdoor unit than the pipe sealing device. Piping seal device that prevents rain, snow, dust, etc. from entering, and avoids problems such as wiring shorts on the control board installed inside the outdoor unit, board burnout, and breaker operation. The purpose is to obtain.

A pipe seal device according to the present invention seals a pipe inserted into an outdoor unit from a knockout hole formed in a panel that is detachably attached to the outdoor unit. A lower seal device installed on the pipe from below, and a fixing means for fastening and fixing the upper seal device and the lower seal device to the pipe. The upper seal device and the lower seal device are connected to the pipe from above and below. A bottomed cylindrical body having a through-hole that opens to the panel side and passes through the pipe to the bottom side in cooperation with the end surfaces facing each other and being fastened and fixed to the pipe by the fixing means. The first sealing member is interposed so as to seal between the opposing end surfaces of the upper sealing device and the lower sealing device, and the second sealing member is connected to the piping. Is disposed on the bottom of the peripheral surface of the entire circumference in close contact to as a bottomed cylindrical member, to isolate the inside and outside of the bottomed cylindrical member, a third sealing member, the so as to surround the knockout holes Arranged at the opening edge of the bottomed cylindrical body, and pressed against the opening edge of the bottomed cylindrical body by the mounting force of the panel to the outdoor unit, the back surface of the panel and the bottomed cylindrical body It is pressurized and nipped between the opening edge portion of the.

  According to this invention, the pipe seal device has the second seal disposed at the bottom of the bottomed cylindrical body, with the end surfaces facing each other between the upper seal device and the lower seal device being in close contact via the first seal portion. The member is in close contact with the entire circumferential direction of the outer peripheral surface of the pipe, and the third seal member disposed at the opening edge of the bottomed cylindrical body surrounds the back surface of the panel and the bottomed cylindrical body so as to surround the knockout hole. After the upper seal device and the lower seal device are supported by the pipe so as to be pressure-clamped between the opening edge portions, the upper seal device and the lower seal device can be fastened and fixed to the pipe by the fixing means. Therefore, it is possible to attach the pipe seal device to the outdoor unit without using a tapping screw, and it is possible to eliminate the poor installation of the pipe seal device due to the screw. As a result, it is possible to avoid troubles such as wiring shorts on the control board, burnout of the board, and operation of the breaker due to intrusion of rain, snow, dust or the like.

It is a disassembled perspective view explaining the structure of the piping seal apparatus which concerns on Embodiment 1 of this invention. It is the front view which looked at the panel surface of the outdoor unit in which the piping seal apparatus which concerns on Embodiment 1 of this invention is attached from the front. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 3. It is a disassembled perspective view explaining the structure of the piping seal apparatus which concerns on Embodiment 2 of this invention. It is a front view which shows the state which combined the upper seal apparatus and lower seal apparatus of FIG. It is the side view seen from the left side surface of FIG. It is the rear view seen from the back surface of FIG. It is the front view which looked at the panel surface of the outdoor unit in which the piping sealing apparatus which concerns on Embodiment 2 of this invention is attached from the front. It is XX arrow sectional drawing of FIG. It is a XI-XI arrow top view of FIG. It is a disassembled perspective view explaining the structure of the piping seal apparatus which concerns on Embodiment 3 of invention. It is a front view which shows the state which combined the upper seal apparatus and lower seal apparatus of FIG. It is the rear view seen from the back surface of FIG. It is a perspective view of the fixing tool for fixing a piping sealing apparatus to refrigerant | coolant piping. It is a perspective view of the fixing tool for fixing a piping sealing apparatus to refrigerant | coolant piping. It is the front view which looked at the panel surface of the outdoor unit in which the piping sealing apparatus which concerns on Embodiment 3 of this invention is attached from the front. It is XVII-XVII arrow sectional drawing of FIG. It is XVIII-XVIII arrow directional cross-sectional view of FIG. It is the XIX-XIX arrow top view of FIG. It is a disassembled perspective view explaining the structure of the conventional piping seal apparatus. It is a perspective view which shows the state of the outdoor unit in which the conventional piping seal apparatus is attached. It is the front view which looked at the panel surface of FIG. 21 from the front. It is XXIII-XXIII arrow sectional drawing of FIG.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is an exploded perspective view for explaining the structure of a pipe seal device according to Embodiment 1 of the present invention, and FIG. 2 shows a panel surface of an outdoor unit to which the pipe seal device according to Embodiment 1 of the present invention is attached. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
1 to 4, the same reference numerals are given to the same or corresponding parts as those in the prior art, and the description thereof is omitted.

In FIG. 1, a pipe seal device 1A is composed of an upper seal device 11A, a lower seal device 12A, and a ring 15 as a fixing means.
The upper sealing device 11A includes a rectangular flat plate-like upper base 2a, semi-cylindrical upper gripping portions 13a and 13b (a shape obtained by dividing a cylinder by a surface including an axis), and an outer shape similar to the outer shape of the upper base 2a. And a rectangular flat plate-like upper gasket 14a.
The upper base 2a has two semi-circular upper notches 3a formed on one edge. The upper gripping portions 13a and 13b are formed in a semi-cylindrical shape having an inner diameter that matches the inner diameter of the upper notch of the upper base portion 2a. Further, the upper gripping portions 13a and 13b are integrally projected on the back surface side of the upper base portion 2a so that the axial direction thereof is orthogonal to the back surface of the upper base portion 2a and the inner diameter thereof is matched with the inner diameter of the upper notch.

  The interval between the upper gripping portions 13 a and 13 b corresponds to the interval between the refrigerant pipes 8 a and 8 b inserted into the panel 7. Moreover, the upper gasket 14a is attached to the surface of the upper base 2a in accordance with the outer shape of the upper base 2a.

  The lower sealing device 12A is formed of a rectangular flat plate-like lower base portion 2b, semi-cylindrical lower gripping portions 13c and 13d, and a rectangular flat plate-like lower gasket 14b having an outer shape similar to the outer shape of the lower base portion 2b. Yes.

  The semi-circular upper notch 3b having the same inner diameter as that of the upper notch 3a is formed on the rectangular flat plate-like lower base 2b at two positions on one edge. The lower gripping portions 13c and 13d are formed in a semi-cylindrical shape having an inner diameter that matches the inner diameter of the lower notch 3b. Further, the lower gripping portions 13c and 13d are integrally projected on the rear surface side of the lower base portion 2b so that the axial direction thereof is orthogonal to the rear surface of the lower base portion 2b and the inner diameter thereof is matched with the inner diameter of the lower notch 3b. .

The interval between the lower grips 13c and 13d corresponds to the interval between the refrigerant pipes 8a and 8b inserted into the panel 7. Moreover, the lower gasket 14b is attached to the surface of the lower base part 2b according to the external shape of the lower base part 2b.
As the gaskets 14a and 14b, a gasket made of rubber such as ethylene propylene rubber which has elasticity and is excellent in waterproofness, weather resistance, and wear resistance can be used.

Next, the mounting structure of the pipe sealing device 1A will be described with reference to FIGS.
In FIG. 2, although the outdoor unit 6 is not illustrated, a compressor, a condenser, an expansion valve, a control board, and the like are disposed inside and are installed on the cradle 5. A panel 7 is detachably attached to the outdoor unit 6. The refrigerant pipes 8a and 8b connected to the condenser of the outdoor unit 6 are inserted through the panel 7 and connected to an expansion valve, a compressor, and the like inside the outdoor unit 6. Furthermore, the pipe seal device 1A is disposed inside the outdoor unit 6 while being supported by these refrigerant pipes 8a and 8b, as will be described later.

  3 and 4, the sealing material 4 is wound around the insertion portion of the refrigerant pipes 8 a and 8 b (pipe) inside the outdoor unit 6 inserted into the outdoor unit 6 through the through holes formed in the panel 7. Has been. The upper sealing device 11A is arranged so that the upper gasket 14a faces the outside and the upper gripping portions 13a and 13b cover the upper half of the sealing material 4 of the refrigerant pipes 8a and 8b from above.

  Further, the lower sealing device 12A is disposed so that the lower gasket 14b faces the outside, and the lower gripping portions 13c and 13d cover the lower half of the sealing material 4 of the refrigerant pipes 8a and 8b from below. Then, with the upper gripping portions 13a, 13b and the lower gripping portions 13c, 13d surrounding the refrigerant pipes 8a, 8b, the ring 15 is connected to the upper gripping portion 13a, the lower gripping portion 13c, the upper gripping portion 13b, and the lower gripping portion 13d. Each is fitted in an externally fitted state. Due to the tightening force of the ring 15, the sealing material 4 is pressed and clamped between the upper gripping portions 13 a and 13 b and the lower gripping portions 13 c and 13 d and the refrigerant pipes 8 a and 8 b.

  Thus, the pipe seal device 1A is supported and fixed inside the outdoor unit 6 by the refrigerant pipes 8a and 8b, and the sealing material 4 is elastically deformed by the tightening force of the ring 15, and the outer peripheral surfaces of the refrigerant pipes 8a and 8b, The upper gripping portions 13a and 13b and the lower gripping portions 13c and 13d are maintained in close contact with the inner peripheral surfaces.

  Further, the attachment position of the pipe seal device 1A in the axial direction of the refrigerant pipes 8a and 8b is such that the back surface of the panel 7 presses the upper gasket 14a and the lower gasket 14b when the panel 7 is mounted. . Therefore, the upper gasket 14a and the lower gasket 14b are pressure-clamped between the back surface of the panel 7 and the upper base 2a and the lower base 2b. Thereby, the panel 7 and the upper gasket 14a and the lower gasket 14b are in close contact with each other.

  With the above structure, the opening gap 10 formed in the panel is disposed on the inner side of the outdoor unit 6 so as to surround the sealing material 4 wound around the refrigerant pipes 8a and 8b and the through hole. It is closed by the upper gasket 14a and the lower gasket 14b. That is, the inside and outside of the outdoor unit 6 are isolated. Therefore, it is possible to prevent rain, snow, dust and the like from entering through the opening gap 10.

  In this Embodiment 1, the sealing material 4 is wound around the insertion part of refrigerant | coolant piping 8a, 8b inside the panel 7. FIG. Moreover, the winding part of the sealing material 4 of the refrigerant pipes 8a and 8b is covered with upper gripping parts 13a and 13b and lower gripping parts 13c and 13d formed in a semi-cylindrical shape. Further, the upper gripping portions 13a and 13b and the lower gripping portions 13c and 13d are fixed by a ring 15 such as rubber so as to press in the radial direction of the refrigerant pipes 8a and 8b. Accordingly, the pipe seal device 1A is supported by the refrigerant pipes 8a and 8b, and the sealing material 4 is in close contact with the outer peripheral surfaces of the refrigerant pipes 8a and 8b and the inner peripheral surfaces of the upper gripping portion 13a and the lower gripping portion 13b. Maintained.

  Furthermore, the axial mounting position of the pipe seal device 1A is such that when the panel 7 is mounted, the inner wall surface of the panel 7 presses the upper gasket 14a and the lower gasket 14b. Thereby, the panel 7 and the upper gasket 14a and the lower gasket 14b are in close contact with each other.

  Therefore, the opening gap 10 formed in the panel has an upper gasket 14a and a lower gasket 14b disposed on the inner side of the outdoor unit 6 so as to surround the sealing material 4 and the through holes wound around the refrigerant pipes 8a and 8b. It is blocked by. That is, the inside and outside of the outdoor unit 6 can be isolated. In the prior art, a tapping screw is used to mount the pipe seal device 101. However, the pipe seal device 1A according to the first embodiment is supported and attached to the refrigerant pipes 8a and 8b. There is no need to use the tapping screw 9, and it is not necessary to drive the screw into the outdoor unit 6.

  Therefore, if the removal and attachment of the panel 7 are repeated every time the outdoor unit 6 is inspected, the screw holes formed in the panel 7 and the upper base 2a and the lower base 2b widen, resulting in a problem in the attachment. Is eliminated. Furthermore, since the opening gap 10 is closed by the pipe seal device 1A attached and supported by the refrigerant pipes 8a and 8b inside the outdoor unit 6, rain, snow, dust, etc. from the opening gap 10 can be removed. It is possible to prevent the control board from entering the installation place. Therefore, it is possible to avoid troubles such as wiring shorts on the control board, burning of the board, and operation of the breaker, which are caused by rain, snow, dust, etc. entering the outdoor unit 6.

  In the first embodiment, it is assumed that the sealing material 4 is wound around the insertion portion on the inside of the outdoor unit of the refrigerant pipes 8a and 8b inserted into the outdoor unit from the through hole formed in the panel 7. However, an elastic gasket is attached to the inner peripheral surfaces of the upper gripping portions 13a and 13b and the lower gripping portions 13c and 13d instead of the sealing material 4, and piping is fixed by the fixing means as in the first embodiment. The same effect can be obtained even when the sealing device 1A is supported by the refrigerant pipes 8a and 8b.

  Further, although the ring 15 is used as the fixing means, the sealing material 4 is pressed and clamped between the upper gripping portions 13a and 13b and the lower gripping portions 13c and 13d and the refrigerant pipes 8a and 8b by a screw tightening force. Such a structure may be used.

  In the first embodiment, rubber gaskets such as ethylene propylene rubber are used for the gaskets 14a and 14b. However, the gaskets are not limited. For example, the gaskets 14a and 14b have elasticity such as silicone rubber and are waterproof, weatherproof, and wear resistant. Gaskets of other materials that are excellent in properties may be used.

Embodiment 2. FIG.
5 is an exploded perspective view for explaining the structure of a pipe seal device according to Embodiment 2 of the present invention, FIG. 6 is a front view showing a state in which the upper seal device and the lower seal device in FIG. 5 are combined, and FIG. 6 is a side view seen from the left side of FIG. 6, FIG. 8 is a rear view seen from the back of FIG. 6, and FIG. 9 is a front view of the panel surface of the outdoor unit to which the piping seal device according to Embodiment 2 of the present invention is attached. FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9, and FIG. 11 is a plan view taken along the line XI-XI of FIG.
5 to 11, the same reference numerals are given to the same or corresponding parts as those in the first embodiment, and the description thereof is omitted.

In FIG. 5, the pipe sealing device 1B is composed of an upper sealing device 11B, a lower sealing device 12B, and pins 22 as fixing means.
The upper sealing device 11B includes a housing 16a having a rectangular parallelepiped shape with an open bottom and front surface, and the housing 16a has a U-shaped bent portion 20 except for an intermediate portion on the back side of the housing 16a. Is formed on the outside of the housing 16a. In addition, two notches are formed in a semicircular shape in the intermediate portion on the back side of the bottom edge of the housing 16a. A gasket 17 a as a first seal member is attached to the bottom edge and the back surface portion (end surface) of the bent portion 20.

Moreover, the gasket 17b as a 2nd sealing member is attached also to two semicircle parts cut out, and the semicircle parts 18a and 18b are formed. Further, a gasket 17c is attached to the front edge as a third seal member.
As the gaskets 17a to 17c, a gasket made of rubber such as ethylene propylene rubber used for the upper gasket 14a and the lower gasket 14b of Embodiment 1 can be used.

  In the lower sealing device 12B, gaskets 17a to 17c are attached to the casing 16b in which the bent portion 20 is formed, and semicircular portions 18c and 18d are provided at the intermediate portion on the back side of the bottom edge of the casing 16b. Is formed. Their structure is the same as that of the upper seal device 11B, and the description thereof is omitted.

  As shown in FIGS. 6 to 8, the upper sealing device 11B and the lower sealing device 12B configured as described above are combined with the mounting portions of the casing 17a and the gasket 17a of the casing 16b, and the pin 22 is attached to the bent portion 20. By sandwiching and fixing the gasket 17a so as to be pressed against each other, the upper sealing device 11B and the lower sealing device 12B are integrated to form a bottomed cylindrical body having one surface opened. Thereby, the gaskets 17a are pressed against each other and come into close contact with each other. Moreover, the opening edge part of a bottomed cylindrical body is formed in the front edge part of the upper sealing apparatus 11B and the lower sealing apparatus 12B, and the gasket 17c is attached along the opening edge part. Furthermore, the opening edge of the bottomed cylindrical body is formed larger than the knockout hole 21.

  Further, the semicircular portions 18a and 18c or 18b and 18d of the upper sealing device 11B and the lower sealing device 12B are combined to form two circular through holes 19a and 19b. The inner diameters of the through holes 19a and 19b are such that when the refrigerant pipes 8a and 8b are inserted, the gasket 17b is pressed by the refrigerant pipes 8a and 8b and elastically deformed, and is in close contact with the outer peripheral surfaces of the refrigerant pipes 8a and 8b. It is adjusted to become.

Next, the attachment structure of the piping seal device 1B will be described with reference to FIGS.
In FIG. 9, a knockout hole 21 is formed in the panel 7 in advance, and refrigerant pipes 8 a and 8 b are inserted into the outdoor unit 6 from the knockout hole 21.

  10 and 11, the upper seal device 11B faces the gasket 17c toward the back side of the panel 7, and the semicircular portions 18a and 18b cover the upper half of the refrigerant pipes 8a and 8b from above inside the outdoor unit 6. It is arranged like this. Further, the lower seal device 12B is arranged so that 17c faces the back side of the panel 7, and the semicircular portions 18c, 18d cover the lower half of the refrigerant pipes 8a, 8b from below inside the outdoor unit 6. ing. Further, the upper sealing device 11B and the lower sealing device 12B are arranged such that the gaskets 17a overlap each other.

  Further, the six pins 22 are fixed by being sandwiched between the bent portions 20 so that the gaskets 17a of the upper sealing device 11B and the lower sealing device 12B are pressed against each other. Thus, the upper seal device 11B and the lower seal device 12B are integrated so as to form a bottomed cylindrical body that opens to the panel 7 side in cooperation with being fastened and fixed to the refrigerant pipes 8a and 8b. ing. Further, the gaskets 17a are brought into close contact with each other while being pressed against each other.

Further, the outer peripheral surfaces of the refrigerant pipes 8a and 8b are pressed in the radial direction by the gaskets 17b of the semicircular portions 18a to 18d. As a result, the gasket 17b is elastically deformed and is maintained in close contact with the outer peripheral surfaces of the refrigerant pipes 8a and 8b.
Accordingly, the pipe sealing device 1B is maintained in a state of being supported by the refrigerant pipes 8a and 8b inside the outdoor unit 6, and the inside and outside of the bottomed cylindrical body is isolated.

  In addition, the piping seal device 1B is provided with an opening edge of the bottomed cylindrical body so as to surround the knockout hole 21, and the gasket 17c is formed between the inner wall surface of the panel 7 and the opening edge of the bottomed cylindrical body. It is arrange | positioned in the position which presses and clamps between. As a result, the inner wall surface of the panel 7 and the gasket 17c are maintained in close contact with each other.

  Therefore, there is no gap between the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body, or between the through holes 19a and 19b and the refrigerant pipes 8a and 8b to be inserted. Further, it is possible to prevent dust and the like from entering the inside of the pipe seal device 1B of the outdoor unit 6. That is, it is possible to prevent rain, snow, dust, and the like from entering the installation location of the control board and the like inside the outdoor unit 6.

  In the second embodiment, the refrigerant pipes 8a and 8b on the inner side of the outdoor unit 6 are covered with the semicircular portions 18a to 18d of the upper seal device 11B and the lower seal device 12B. Further, the upper sealing device 11B and the lower sealing device 12B sandwich the six pins 22 between the bent portions 20 of the casings 16a and 16b so that the gaskets 17a are pressed against each other with the gaskets 17a overlapped. It is fixed. Thus, the upper seal device 11B and the lower seal device 12B are integrated so as to form a bottomed cylindrical body that opens to the panel 7 side in cooperation with being fastened and fixed to the refrigerant pipes 8a and 8b. ing. Further, the outer peripheral surfaces of the refrigerant pipes 8a and 8b are pressed in the radial direction by the gasket 17b, and the gasket 17b is elastically deformed and maintained in close contact with the outer peripheral surfaces of the refrigerant pipes 8a and 8b. Therefore, the pipe sealing device 1B is supported by the refrigerant pipes 8a and 8b inside the outdoor unit 6.

Moreover, the attachment position of the pipe seal device 1B in the axial direction of the refrigerant pipes 8a and 8b is such a position that the inner wall surface of the panel 7 presses the gasket 17c attached to the opening edge of the bottomed cylindrical body. ing. As a result, the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body are maintained in close contact with each other.
Therefore, the gap between the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body or between the through holes 19a and 19b and the refrigerant pipes 8a and 8b to be inserted is closed. It is possible to prevent rain, snow, dust, and the like from entering the interior of the pipe seal device provided in the outdoor unit 6. That is, it is possible to prevent rain, snow, dust and the like from entering the installation place of the control board and the like.
Therefore, according to the second embodiment, the same effect as in the first embodiment can be obtained.

  In the second embodiment, the first seal member, the second seal member, and the third seal member are made of rubber gaskets such as ethylene propylene rubber, but are not limited. It is possible to use gaskets made of other materials that are excellent in waterproofness, weather resistance, and abrasion resistance.

Embodiment 3 FIG.
12 is an exploded perspective view for explaining the structure of a pipe seal device according to Embodiment 3 of the present invention, FIG. 13 is a front view showing a state in which the upper seal device and the lower seal device of FIG. 12 are combined, and FIG. FIG. 15 is a perspective view of a fixture for fixing the pipe seal device to the refrigerant pipe, and FIG. 16 is an outdoor where the pipe seal device according to the third embodiment of the present invention is attached. FIG. 17 is a sectional view taken along arrow XVII-XVII in FIG. 16, FIG. 18 is a sectional view taken along arrow XVIII-XVIII in FIG. 17, and FIG. 19 is an XIX-XIX arrow in FIG. FIG.
12 to 19, the same or corresponding parts as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
Moreover, the side view seen from the left side surface of FIG. 13 is the same as FIG.

In FIG. 12, the pipe sealing device 1 </ b> C includes an upper sealing device 11 </ b> C, a lower sealing device 12 </ b> C, a pin 22 as a fixing means, and a fixing tool 25.
The upper sealing device 11C includes a casing 16a having a rectangular parallelepiped shape with an open bottom and front surface. The casing 16a has a U-shaped bent portion 20 except for an intermediate portion on the back side of the casing 16a. Is formed on the outside of the housing 16a. Semicircular portions 18e and 18f are formed by cutting an intermediate portion on the back side of the bottom edge of the casing 16a into two semicircular shapes.
Further, a gasket 17a as a first seal member is attached to the bottom edge of the housing 16a and the back surface portion (end surface) of the bent portion 20. Further, a gasket 17c as a third seal member is attached to the front edge of the housing 16a.

  Further, the upper self-adhesive elastic material 23a formed in a sheet shape is covered and covered on the inner wall surface on the back side of the housing 16a as a second seal member. The upper self-adhesive elastic material 23a is attached, for example, by adhering the portions other than the semicircular portions 18e and 18f to the inner wall surface of the housing 16a. Further, the bottom side of the upper self-adhesive elastic material 23a extends from the bottom edge. In addition, two sets of two tap holes 24 used for fixing a fixing tool 25 to be described later are formed on the wall surface on the back side.

In the lower sealing device 12C, gaskets 17a and 17c and a lower self-adhesive elastic material 23b as a second sealing member are attached to a casing 16b, and semicircular portions 18g and 18h and a tap hole 24 are formed. Has been. The lower self-adhesive elastic material 23b covers the inner wall surface on the back side of the casing 16b as with the upper self-adhesive elastic material 23a, and the structure of the lower seal device 12C is the same as that of the upper seal device 11C. Omitted.
Note that the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are excellent in flexibility that is deformed along the shape of the adherend and closely adheres to the adherend, and that is waterproof, heat resistant, and cold resistant. For example, a butyl damper (Tokai Sealant Industrial Co., Ltd. model name: TSK # 202-H) can be used.

  As shown in FIGS. 13 and 14, the mounting portions of the gasket 17a covering the bottom edge of the casing 16a and the casing 16b are aligned, and the pin 22 is fixed to the bent portion 20 so that the gasket 17a is pressed against each other. By doing so, the upper sealing device 11C and the lower sealing device 12C are integrated to form a bottomed cylindrical body having one surface opened. Thereby, the gaskets 17a are pressed against each other and come into close contact with each other.

  Moreover, the opening edge part of a bottomed cylindrical body is formed in the front edge part of 11 C of upper sealing apparatuses and the lower sealing apparatus 12C, and the gasket 17c is attached along the opening edge part. Furthermore, the opening edge of the bottomed cylindrical body is formed larger than the knockout hole 21.

  Further, the lower end side of the upper self-adhesive elastic material 23a of the upper seal device 11C extends to the lower seal device 12C side, and the upper end side of the lower self-adhesive elastic material 23b of the lower seal device 12C extends to the upper seal device 11C side. It has been extended. That is, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b overlap each other around the bottom edge on the back side of each of the housings 16a and 16b when the upper seal device 11C and the lower seal device 12C are integrated. Combined.

  Further, the semicircular portions 18e and 18g or 18f and 18h formed at the intermediate portion of the bottom edge on the back side of each of the housings 16a and 16b are combined to form two circular through holes 19c and 19d. . The sizes of the through holes 19c and 19d are formed larger than the outer shape of the refrigerant pipes 8a and 8b.

Next, the structure of the fixture 25 will be described.
In FIG. 15, the fixture 25 includes a rectangular flat plate fixing plate 26, a rectangular flat plate fixing plate 27, a screw portion 28, a nut 29, a holding portion 30, and a thick plate-shaped tap adjustment piece 31. It is composed of
On the plate surface of the fixed plate 26, two through holes 32 for screwing are formed so as to correspond to the tap holes 24 formed in the pipe seal device 1C. The stop plate 27 is fixed to the short side edge portion of the fixed plate 26, and the fixed plate 26 and the stop plate 27 are integrated to form an L shape. Further, the stop plate 27 is formed with a through hole (not shown) for inserting a screw portion 28 described later in the vicinity of the center of the plate surface.

  The threaded portion 28 is a bar that is tapped to match the tap of the nut 29. A tap hole (not shown) that matches the tap of the screw portion 28 is formed in the tap adjusting piece 31 at the center of the surface in the thick direction. The holding unit 30 includes a curved plate 33 and a gasket 34 that is fixed to the inner peripheral surface side of the curved plate 33 and has the same outer shape as the curved plate 33.

One end of the screw portion 28 is fixed to the central portion of the curved plate 33 on the outer peripheral surface side, and the tapped hole formed in the tap adjusting piece 31 on the other end of the screw portion 28, the through hole of the stop plate 27, and the nut By inserting the 29 tap holes in this order, the fixture 25 is integrated.
The tap adjusting piece 31 and the nut 29 of the fixture 25 configured as described above can move in the axial direction of the screw portion 28 when they are rotated. Further, the holding portion 30 is fixed by sandwiching the stop plate 27 with the tap adjusting piece 31 and the nut 29.

Next, the mounting structure of the pipe sealing device 1C will be described with reference to FIGS.
In FIG. 16, a knockout hole 21 is formed in the panel 7 in advance, and refrigerant pipes 8 a and 8 b are inserted into the outdoor unit from the knockout hole 21.
17 to 19, the fixing tool 25 is fixed to the upper sealing device 11C with a screw 35 by aligning the positions of the through holes 32 formed in the fixing plate 26 with the corresponding tap holes 24 formed in the upper sealing device 11C. ing. Furthermore, another fixture 25 is similarly fixed to the upper seal device 11C.
Further, the two fixing tools 25 are also fixed to the lower sealing device 12C with screws 35.

  Further, the interval between the holding portions 30 of the two fixtures 25 attached to the upper seal device 11C and the lower seal device 12C corresponds to the interval between the refrigerant pipes 8a and 8b.

  Further, the upper seal device 11C is arranged so that the gasket 17c faces the outside, and the semicircular portions 18e and 18f cover the upper half of the refrigerant pipes 8a and 8b from above inside the outdoor unit 6.

  Further, the lower sealing device 12C is arranged so that the gasket 17c faces the outside, and the semicircular portions 18g and 18h cover the lower half of the refrigerant pipes 8a and 8b from below inside the outdoor unit 6. . Further, the upper sealing device 11C and the lower sealing device 12C are arranged so that the gaskets 17a overlap each other.

  Further, the six pins 22 are fixed by being sandwiched between the bent portions 20 so that the gaskets 17a are pressed against each other. As a result, the upper sealing device 11C and the lower sealing device 12C are integrated so as to form a bottomed cylindrical body that opens to the panel 7 side in cooperation with being fastened and fixed to the refrigerant pipes 8a and 8b. ing. Further, the gaskets 17a are brought into close contact with each other while being pressed against each other.

The nut 29 is fixed in close contact with the stopper plate 27 in a state where the inner peripheral surface of the gasket 34 of the holding portion 30 presses the outer peripheral surface of the refrigerant pipes 8a and 8b. Furthermore, the tap adjustment piece 31 is maintained in a state of pressing the stopper plate 27 toward the nut 29 side.
Thereby, the gasket 34 of the holding | maintenance part 30 is pressed to the radial direction of refrigerant | coolant piping 8a, 8b. Therefore, the gasket 34 is maintained in close contact with the refrigerant pipes 8a and 8b, and the pipe seal device 1C is supported by the refrigerant pipes 8a and 8b inside the outdoor unit 6.

Further, when the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are mounted with the upper seal device 11C from the upper part of the refrigerant pipes 8a and 8b and the lower pipe seal device 12C from the lower part of the refrigerant pipes 8a and 8b, The peripheral parts of the refrigerant pipes 8a and 8b overlap each other.
At this time, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are naturally deformed along the external shape of the refrigerant pipes 8a and 8b, and are in close contact with the refrigerant pipes 8a and 8b due to their own adhesiveness. Is maintained. Furthermore, the portions where the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b overlap are also adhered and adhered to each other.

  The upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are bonded to the back surfaces of the casings 16a and 16b except for the vicinity of the portion where the refrigerant pipes 8a and 8b are inserted into the through holes 19c and 19d. Therefore, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b close the gap between the refrigerant pipes 8a and 8b and the through holes 19c and 19d, thereby isolating the inside and outside of the bottomed cylindrical body. Therefore, the gaps between the refrigerant pipes 8a, 8b and the through holes 19c, 19d are closed, that is, the inside and outside of the bottomed cylindrical body are isolated, and rain, snow, dust, etc. are inside the outdoor unit 6. It is possible to prevent further intrusion from the pipe seal device 1C provided.

  In addition, the pipe sealing device 1C is provided with an opening edge of the bottomed cylindrical body so as to surround the knockout hole 21, and the gasket 17c is formed between the inner wall surface of the panel 7 and the opening edge of the bottomed cylindrical body. It is arrange | positioned in the position which presses and clamps between. As a result, the inner wall surface of the panel 7 and the gasket 17c are maintained in close contact with each other.

  Therefore, there is no gap between the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body, and rain, snow, dust, etc. are removed from the gap between the panel 7 and the gasket 17c inside the outdoor unit 6. It is possible to prevent further intrusion into the inside of the pipe seal device 1 </ b> C disposed in the box.

  In the third embodiment, refrigerant pipes 8a and 8b on the inner side of the outdoor unit 6 are inserted into through holes 19c and 19d formed by semicircular portions 18e to 18h of the upper seal device 11C and the lower seal device 12C. Yes. Further, the upper sealing device 11C and the lower sealing device 12C sandwich the six pins 22 between the bent portions 20 of the casings 16a and 16b so that the gaskets 17a are pressed against each other with the gaskets 17a overlapped. It is fixed. As a result, the upper sealing device 11C and the lower sealing device 12C are integrated so as to form a bottomed cylindrical body that opens to the panel 7 side in cooperation with being fastened and fixed to the refrigerant pipes 8a and 8b. ing. Furthermore, the pipe sealing device 1C is fixed to the refrigerant pipes 8a and 8b by a fixture 25. As a result, the pipe sealing device 1 </ b> C is supported by the refrigerant pipes 8 a and 8 b inside the outdoor unit 6.

  The attachment position of the pipe seal device 1C in the axial direction of the refrigerant pipes 8a and 8b is such that the inner wall surface of the panel 7 presses the gasket 17c attached to the opening edge of the bottomed cylindrical body. It has become. As a result, the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body are maintained in close contact with each other.

  Furthermore, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are attached to the inner wall surface on the bottom surface side of the bottomed cylindrical body, except for the periphery of the refrigerant pipes 8a and 8b. Further, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are naturally deformed along the outer shapes of the refrigerant pipes 8a and 8b, and are maintained in close contact with the refrigerant pipes 8a and 8b. Furthermore, the part where the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b overlap is also maintained in a close contact state. Thereby, the clearance gap between the through-holes 19c and 19d and the refrigerant | coolant piping 8a and 8b inserted is closed, and the inside and outside of the bottom face side of a bottomed cylindrical body are isolated.

Thus, the gap between the panel 7 and the gasket 17c attached to the opening edge of the bottomed cylindrical body or between the through holes 19c and 19d and the refrigerant pipes 8a and 8b to be inserted is closed. Further, it is possible to prevent rain, snow, dust, and the like from entering the interior of the pipe seal device 1C disposed in the outdoor unit 6. That is, it is possible to prevent rain, snow, dust and the like from entering the installation place of the control board and the like.
Therefore, according to the third embodiment, the same effect as in the first embodiment can be obtained.

  In addition, the upper self-adhesive elastic material 23a and the lower self-adhesive elastic material 23b are in close contact with the refrigerant pipes 8a and 8b having different outer diameters and deformed along the outer shapes of the refrigerant pipes 8a and 8b. The pipe seal device 1C of the third embodiment has a further effect that it can cope with the refrigerant pipes 8a and 8b having different outer diameters with the same configuration.

  The configuration of the fixture 25 used in the third embodiment is not limited, and any configuration may be used as long as the piping seal device 1C is fixed to and supported by the refrigerant pipings 8a and 8b.

  In the above embodiments, the refrigerant pipes 8a and 8b are used as the pipes. However, the pipes are not limited to the refrigerant pipes 8a and 8b, and may be other types of pipes.

  1A to 1C Piping seal device, 2a Upper base, 2b Lower base, 3a Upper notch, 3b Lower notch, 4 Seal member, 6 Outdoor unit, 7 Panel, 8 Refrigerant piping (pipe), 11A to 11C Upper sealing device, 12A-12C Lower sealing device, 13a, 13b Upper gripping part, 13c, 13d Lower gripping part, 14a Upper gasket, 14b Lower gasket, 15 Ring (fixing means), 16a, 16b Housing, 17a Gasket (first sealing member) ), 17b gasket (second seal member), 17c gasket (third seal member), 19a to 19d through hole, 21 knockout hole, pin 22 (fixing means), 23a upper self-adhesive elastic material (second seal) Member), 23b lower self-adhesive elastic material (second seal member), 25 fixing tool (fixing hand) Step).

Claims (4)

A pipe sealing device for sealing a pipe inserted into the outdoor unit from a knockout hole formed in a panel detachably attached to the outdoor unit,
An upper sealing device installed on the pipe from above;
A lower sealing device installed on the pipe from below;
Fixing means for fastening and fixing the upper seal device and the lower seal device to the pipe,
The upper seal device and the lower seal device are addressed to the pipe from above and below, cooperate with each other with the end surfaces facing each other and fastened and fixed to the pipe by the fixing means. Opened and formed to form a bottomed cylindrical body having a through hole through which the pipe passes.
The first seal member is interposed so as to seal between the opposing end surfaces of the upper seal device and the lower seal device, and the second seal member is in close contact with the entire circumferential direction of the outer peripheral surface of the pipe. So as to be disposed at the bottom of the bottomed cylindrical body, and to isolate the inside and outside of the bottomed cylindrical body,
A third seal member is disposed at an opening edge of the bottomed cylindrical body so as to surround the knockout hole, and an opening edge of the bottomed cylindrical body is formed by an attachment force of the panel to the outdoor unit. It is pressed against the part, a pipe sealing apparatus characterized by being pressurization clamping between the opening edge portion of the back surface and the bottomed cylindrical body of the panel. The first seal member is configured by disposing a gasket along the end surfaces of the upper seal device and the lower seal device,
The second seal member is configured by disposing a gasket along the wall surface of the through hole of the upper seal device and the lower seal device,
The piping seal device according to claim 1, wherein the third seal member is configured by disposing a gasket along the opening edge of the upper seal device and the lower seal device.   The piping seal device according to claim 2, wherein the gaskets of the first seal member, the second seal member, and the third seal member are integrally formed. The first seal member is configured by disposing a gasket along the end surfaces of the upper seal device and the lower seal device,
The second seal member has a sheet-like upper self-adhesive elastic material and a lower self-adhesive elastic material, and the upper seal is arranged such that the lower end side of the upper self-adhesive elastic material extends to the lower seal device side. The lower self-adhesive elastic material is disposed in close contact with the inner wall surface on the back side of the device, and is closely adhered to the inner wall surface on the back surface of the lower seal device so that the upper end side extends to the upper seal device side. Arranged and configured,
The piping seal device according to claim 1, wherein the third seal member is configured by disposing a gasket along the opening edge of the upper seal device and the lower seal device.

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