JPH0875193A - Air conditioner for unit residence - Google Patents

Abstract

PURPOSE: To provide an air conditioner for a unit residence in which a refrigerant tube can be piped with a ceiling and a wall immediately after an indoor unit is installed without necessity of connecting the tube to the indoor unit after the indoor unit is installed in a unit residence part. CONSTITUTION: It is aimed at that a refrigerant tube 4 which is complicated for its connecting operation is previously connected to an indoor unit 2 and the tube 4 of necessary length is provided together with the unit 2. The tube 4 is previously connected to the indoor side connecting port (refrigerant tube introducing and discharging tube 23) of the unit 2, and the length of the tube 4 has the length which can be connected to the outdoor unit side connecting port 9 of the outdoor unit 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit residential air conditioner, and more particularly to a unit residential air conditioner in which a refrigerant pipe is previously connected to an indoor unit side.

[0002]

2. Description of the Related Art Conventionally, a so-called separate type air conditioner in which an indoor unit and an outdoor unit are connected by a refrigerant pipe is generally shown in FIG. 10 from the connection mode of the refrigerant pipe. That is, in the air conditioner 1 of FIG. 10, the indoor unit 2 and the outdoor unit 3 (air conditioner body) are connected by the refrigerant pipe 4 made of a copper pipe. In particular,
The indoor unit side connection port 6 connected to the heat exchanger 5 in the indoor unit 2 is connected to the pipe connection portion 7 of the refrigerant pipe 4, and the outdoor unit side connection port 9 is connected to the heat exchanger 8 in the outdoor unit 3. And the pipe connecting portion 7 of the refrigerant pipe 4 are connected. Further, the refrigerant pipe 4 is installed through the wall 10 of the house.

There are a pair of refrigerant pipes 4 in which a gaseous refrigerant passes and one in which a liquid refrigerant passes, but since both have the same connection structure, one of them is used. Only the refrigerant pipe 4 is shown.

[0004] In such an air conditioner 1, because of the difficulty in connecting the piping of the refrigerant piping 4, it has generally been done by a piping specialist in the past. As the pipe connection work after the indoor unit 2 and the outdoor unit 3 are installed, firstly, a processing process of cutting the refrigerant pipe 4 on site and flaring the end portion thereof, and secondly, tightening torque of the pipe connection portion 7 There is a tightening step of tightening the pipe connecting portion 7 while controlling the above, and a check step of thirdly checking the leakage of the refrigerant. Each process requires specialized knowledge and skill, is difficult for a general worker, and is generally performed by a piping specialist as described above.

Particularly, the flare processing will be outlined with reference to FIG. FIG. 11 is a side view showing a tip end portion of the refrigerant pipe 4 which has been subjected to flare processing. The tip end portion of the pipe body 12 made of a copper pipe or the like covered with the heat insulating material 11 is flared by expanding it into a trumpet shape. The connection end 13 is formed into a circular shape and is connected to the distal end of the outdoor unit side connection port 6 or the indoor unit side connection port 9 by a tightening nut 14.

Furthermore, in such a separate type air conditioner 1 in a unit house or the like, the building unit is assembled at the construction site, and then the indoor unit 2 is attached to the ceiling portion 1.
When the connection work of the refrigerant pipe 4, and further the drain hose 17 and the communication line 18 is performed after the installation on the field edge or other structural material 16 in 5, the above-mentioned low connection workability of the refrigerant pipe 4 is required. There is a problem that it is a bottleneck in the construction work itself.

Even when the indoor unit 2 is installed and the pipes are connected in a residential factory, the work for connecting the refrigerant pipe 4, the drain hose 17 and the communication line 18 has a high weight, and this connection is also the same. There is a problem that low workability is a bottleneck in manufacturing.

Further, in the case where the refrigerant pipe 4 is connected to the indoor unit side connection port 7 in the conventional manner in the conventional manner,
There is also a problem that the airtightness may be deteriorated by loosening the connection part due to vibration during transportation of the unit house.

Further, when the refrigerant pipe 4, the drain hose 17 and the communication line 18 are housed inside the wall portion 10 of the house, connecting them at a construction site means that the refrigerant pipe 4 is connected in the housing factory. , Drain hose 1
That is, it becomes impossible to attach the inner wall portion covering the communication line 7 and the communication line 18, and there is also a problem in quick construction.

Further, the refrigerant pipe 4 of the air conditioner 1 is subjected to an airtight test so that there is no refrigerant leakage, but simplification of this has also been demanded. As a known technique, Japanese Patent Laid-Open No.
There is -5638 issue.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is not necessary to connect a refrigerant pipe to this indoor unit after installing the indoor unit in the unit housing part. An object of the present invention is to provide an air conditioner for a unit house in which a refrigerant pipe can be installed on the ceiling portion and the wall portion immediately after installing the indoor unit.

It is another object of the present invention to provide a unit residential air conditioner in which the connecting portion of the refrigerant pipe has durability against vibration during transportation.

It is another object of the present invention to provide an air conditioner for a unit house, which does not require connection of a refrigerant pipe or the like from an indoor unit to a house portion at a construction site and can reduce construction work on site. To do.

A further object of the present invention is to provide a unit housing air conditioner capable of simplifying an air tightness test in a refrigerant pipe.

[0015]

That is, according to the present invention, a refrigerant pipe, a drain hose or a communication line, in particular, a refrigerant pipe which is troublesome to connect is connected to an indoor unit in advance.
And focusing on keeping the refrigerant pipe of the required length together with the indoor unit, the indoor unit to be installed inside the unit house, and the outdoor unit to be installed outside the unit house,
An air conditioner for a unit house, wherein the outdoor unit side connection port of the outdoor unit and the indoor unit side connection port of the indoor unit are connected to each other by a refrigerant pipe, and the refrigerant pipe is installed through the wall of the unit house. The refrigerant pipe is previously connected to the indoor unit side connection port of the indoor unit, and the length of the refrigerant pipe is a length connectable to the outdoor unit side connection port of the outdoor unit. An air conditioner for a unit house, which is characterized in that

A pressing member capable of temporarily fixing the refrigerant pipe can be provided on the side surface of the air conditioner housing of the indoor unit outside the indoor unit side connection port.

The refrigerant pipes pressed by the pressing member can be temporarily held together on the upper surface of the air conditioner housing.

The pressing member may be removable from the air conditioner housing.

A nitrogen gas having a predetermined pressure may be enclosed in the refrigerant pipe, and a removable cap may be provided at the tip of the refrigerant pipe.

[0020]

In the unit housing air conditioner according to the present invention, the refrigerant pipe, which is particularly troublesome in connection work, is connected to the indoor unit in advance. Therefore, immediately after installing the indoor unit on the ceiling in the housing factory, It is possible to perform piping in the wall portion of the house of the refrigerant piping.

Further, by projecting the tip end of the refrigerant pipe to the outer wall surface of the wall of the house, only the connecting work to the outdoor unit is required at the construction site, and the connecting work of the refrigerant pipe is halved compared to the conventional work. Can be facilitated.

Since the refrigerant pipe is directly connected to the indoor unit, it is possible to improve the vibration resistance at the time of transportation, etc., as compared with the conventional connecting structure by the connecting work in the house factory.

Further, since the refrigerant pipe having a predetermined length is temporarily fixed to the indoor unit by the holding member, the holding member is removed after the air conditioner is received at the housing factory to remove the refrigerant pipe and the like from the predetermined pipe. Can be installed in the passage.

The inside of the refrigerant pipe is filled with a water-free inert gas that does not promote corrosion inside the pipe, for example, nitrogen gas of a predetermined pressure, and its tip is closed with a protective cap. If this protective cap is taken in the factory, it is possible to grasp the airtight state in the refrigerant pipe by the open sound, and the airtight test can be simplified.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner 20 for a unit house according to an embodiment of the present invention will be described below with reference to FIGS. However, the same parts as those in FIGS. 10 and 11 are designated by the same reference numerals, and the detailed description thereof will be omitted. FIG. 1 is a perspective view of an indoor unit 2 portion of an air conditioning apparatus 20 for unit housing,
2 is a plan view of the same, FIG. 3 is a front view of the same, and an air conditioner 20 for a unit house includes an indoor unit 2 and its air conditioner housing 21, an outdoor unit 3, and a hanging bracket 22.
The refrigerant pipe 4 and the refrigerant pipe introduction / exhaust pipe 2 corresponding to the indoor unit side connection port 7 to which the refrigerant pipe 4 is previously connected.
3, drain water discharge pipe 24, and connection terminal block 25
And a pressing member 26.

The indoor unit 2 is attached to a structural member 16 such as a bezel on the back surface (upper surface) of the ceiling portion 15 by means of a hanging metal fitting 22.

A drain hose 17 is connected to the drain water discharge pipe 24, and a communication line 18 is connected to a connection terminal block 25 provided at the upper corner of the air conditioner housing 21.

The pressing member 26 is a refrigerant pipe introducing / extracting pipe 2
This is provided on the side surface of the air conditioner housing 21 on the outer side than 3, and can be attached in any form such as a cantilever type or a both end attachment type.

After the refrigerant pipe 4 is temporarily fixed by the pressing member 26, it is integrally rounded together with the drain hose 17 and the communication line 18 on the upper surface of the air conditioner housing 21 by a fastening member 27 such as a band clip. It is summarized.

Therefore, the connection portion of the refrigerant pipe 4 does not become loose when the unit residential air conditioner 20 is transported to the housing factory.

As a mounting position of the pressing member 26, any position such as a side surface or an upper surface around the indoor unit 2 can be selected, but a connecting portion between the air conditioner housing 21 and the refrigerant pipe 4 (refrigerant pipe introduction / extraction pipe). The position closer to the refrigerant pipe 4 than 23) is desirable.

As the length of the pressing member 26, a minimum length is required to withstand handling such as stretching the long refrigerant pipe 4 and putting it in a round shape.

Since the outer surface of the air conditioner housing 21 is provided with a heat insulating material, an adhesive label or a plate (not shown) may not be attached in some cases, but the pressing member 26 is used.
A label or plate indicating work procedures or precautions can be attached to the surface of the.

To release the refrigerant pipe 4, the drain hose 17 and the communication line 18, the retaining member 27 may be cut. To release the refrigerant pipe 4 from the holding member 26, the holding member 26 may be released as shown in FIG. The holding member 26 may be removed from the air conditioner housing 21 by removing the retaining screw 28 of the.

Alternatively, as shown in FIG. 5, a retaining screw 28
In the case of a structure in which the holding member 26 is fixed to the air conditioner housing 21 with a retaining pin 29 interposed between
The pressing member 26 can be removed from the air conditioner housing 21 by removing the retaining pin 29 with pliers or the like.

A protective cap 30 is fitted on the tip of the refrigerant pipe 4 shown in FIG. 1. After the refrigerant pipe 4 is piped to the ceiling portion 15 or the wall portion 10, the protective cap 30 is attached. Eventually it will be removed.

In addition to the protective cap 30, FIG.
As shown in FIG.
It is desirable to provide.

FIG. 6 is an enlarged sectional view of the bite-in joint 31. The bite-in joint 31 connects the refrigerant pipe 4 from the indoor unit 2 and the outdoor unit side connection port 9 of the outdoor unit 3. , Which has a symmetrical connection union body 32 as a joint body. The connection union body 32 has threaded portions 33 formed on the left and right ends thereof.

The bite-in joint 31 has a connecting union body 32, a pair of tightening nuts 34 that engage with the threaded portion 33, and a pair of tapered nuts that are hard to fit between the tightening nut 34 and the tip of the refrigerant pipe 4. First ferrule 35
And a stepped second ferrule 36.

For connection, the refrigerant pipe 4 is cut to a required length, inserted into the tightening nut 34 and tightened to form the tapered first ferrule 35 and the stepped second ferrule 36. It can be tightened between the threaded portion 33 and the tightening nut 34 to obtain the necessary tightening force.

However, the refrigerant pipe 4 is directly connected from the indoor unit 2 to one of the bite joints 31 (on the right side in the figure), and the other portion (on the left side in the figure) of the outdoor unit 3 is connected to the bite joint 31. The outdoor unit side connection port 9 is not connected, and a configuration is provided in which a fitting joint 31 that is difficult to be attached to the tip portion of the refrigerant pipe 4 is provided.

As shown in FIG. 7, this bite joint 31
It is assumed that the protective cap 30 is fitted to the portion of and the inside of the refrigerant pipe 4 is filled with a predetermined pressure of, for example, 2 Kg / cm ² of nitrogen gas. The pressure inside the pressure gauge 37 can be measured by inserting the needle 38 through the protective cap 30.

When the unit housing air conditioner 20 having such a structure is attached to the field edge and other structural members 16 of the ceiling portion 15, it is attached to the surface of the air conditioner housing 21 of the indoor unit 2 as shown in FIG. The hoist 40 is hooked on the eyebolt 39, and the hoist 40 is moved to the position of the structural member 16 on the ceiling portion 15 to attach the hanging metal fitting 22 to the structural member 1.
6 and fix it with the installation bolt 41.

Then, the retaining member 27 is cut to release the refrigerant pipe 4, the drain hose 17 and the communication line 18, and the retaining screw 28 is removed to remove the refrigerant pipe 4 from the holding member 26. After directing 17 and the communication line 18 in the respective target directions, a predetermined passage on the rear surface of the ceiling portion 15 is inserted.

FIG. 9 is a longitudinal sectional view showing a state in which the refrigerant pipe 4 is passed from the indoor unit 2 side to the outdoor unit 3 side inside the wall portion 10 of the house when the indoor unit 2 is installed. The refrigerant pipe 4 starting from the connection end of the machine 2 has a structure such as a rim or other structural material 16 especially between the ceiling portion 15 and the wall portion 10.
Through a narrow gap 42 that intersects with each other.
After installing piping inside and fixing with gum tape 43 etc., the heat insulating material 44 is attached to the entire wall portion 10 so as to cover it.

Thus, since the indoor unit 2 and the refrigerant pipe 4 are integrated, the transport vibration resistance in the packaged state of the unit home air conditioner 20 is improved, and the pipe construction time at the home maker is shortened, and the pipe It is possible to improve the airtight proof strength at the time of handling and also improve the transport vibration proof strength from the housing factory to the construction site.

Further, since the pipe connection work is not required on the back surface of the ceiling portion 15, it is not necessary to handle a pipe holder (not shown) in the ceiling portion 15, and any pipe on the back surface of the ceiling portion 15 is not required. The construction can be performed without causing damage such as refrigerant leakage to the pipe joint connecting portion in the direction.

At the time when the tip of the refrigerant pipe 4 (the bite joint 31 portion) is opposed to the outdoor unit 3 or when the unit residential air conditioner 20 is installed on the structural member 16 in the ceiling portion 15, If the protective cap 30 at the tip of the refrigerant pipe 4 is removed and an open sound, for example, a sound such as a "pop" sound is made, it is understood that the airtightness inside is maintained.

[0049]

As described above, according to the present invention, since the indoor unit and the refrigerant pipe are integrally connected in advance, the connection work required in the housing factory or the construction site is performed by connecting the refrigerant pipe and the outdoor unit. Only the connecting work between the two units can be performed, and the man-hours for installing the unit residential air conditioner can be significantly reduced, and the reliability of the pipe connection can be improved.

Further, since the nitrogen gas is enclosed in the refrigerant pipe, the air tightness test can be simplified.

[0051]

[Brief description of drawings]

FIG. 1 is a perspective view of an indoor unit 2 portion of a unit residential air conditioner 20 according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a pressing member 26 that holds the refrigerant pipe 4 in the same manner.
It is an enlarged front view of a part.

FIG. 5 is an enlarged front view showing a configuration for fixing the pressing member 26 to the air conditioner housing 21 by interposing a retaining pin 29 with the retaining screw 28.

FIG. 6 is an enlarged cross-sectional view of the bite joint 31 portion of the same.

FIG. 7 is a perspective view showing a pressure gauge 37 for measuring the pressure inside the bite joint 31 of the same.

FIG. 8 is a perspective view showing a process of attaching the unit house air conditioner 20 to the ceiling portion 15 and other structural material 16 portions of the same.

FIG. 9 is a vertical cross-sectional view showing a state in which the refrigerant pipe 4 is passed through the inside of the wall 10 of the house from the indoor unit 2 side to the outdoor unit 3 side when the indoor unit 2 is installed.

FIG. 10 is a schematic explanatory view showing a conventional so-called separate type air conditioner 1.

FIG. 11 is a side view showing a tip portion of the flare-processed refrigerant pipe 4 of the same.

[Explanation of symbols]

 1 Air Conditioner 2 Indoor Unit 3 Outdoor Unit 4 Refrigerant Pipe 5 Heat Exchanger in Indoor Unit 2 6 Indoor Unit Side Connection Port 7 Pipe Connection 8 Heat Exchanger in Outdoor Unit 3 9 Outdoor Unit Side Connection Port 10 Residential Wall 11 Heat insulation material 12 Piping body 13 Flare connection end 14 Tightening nut 15 Ceiling part 16 Field edge and other structural materials in the ceiling part 17 Drain hose 18 Communication line 20 Unit Air conditioner for indoor unit 21 Air conditioner for indoor unit 2 Machine housing 22 Lifting fitting 23 Refrigerant pipe introduction / extraction pipe (pipe connection part) 24 Drain water discharge pipe 25 Connection terminal block 26 Holding member 27 Fastening member 28 Fastening screw 29 Fastening pin 30 Protective cap 31 Biting joint 32 Connection union body 33 Screw Cut portion 34 Tightening nut 35 First tapered ferrule 36 Second ferrule with step 37 Pressure gauge 38 Needle of pressure gauge 37 39 Eye bolt 40 Hoist 41 Installation bolt 42 Narrow gap 43 Duct tape 44 Thermal insulation

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Tanaka 39, Toyo, Toyo, Konan-cho, Oza-gun, Saitama Prefecture Inside the Zekcel Gangnam Plant (72) Inventor Kiyoshi Arai, Chiyo-ji, Tonan, Konan-cho, Oza-gun, Saitama Prefecture Address 39, XXcel Gangnam Plant (72) Inventor, Yuji Kawamura, East Hara, Konan-cho, Oza-gun, Saitama Prefecture 39 Address XXEL Ltd., Konan Plant (72) Inventor Hiroaki Kuwahara 3-18-4 Azuma, Tsukuba, Ibaraki Prefecture

Claims (5)

[Claims] 1. An indoor unit installed inside a unit house and an outdoor unit installed outside a unit house are connected to the outdoor unit side connection port of the outdoor unit and the indoor unit side connection port of the indoor unit with refrigerant pipes. A unit housing air conditioner which is connected to each other by means of this refrigerant pipe through the wall of the unit house, and the refrigerant pipe is previously connected to the indoor unit side connection port of the indoor unit. An air conditioner for a unit house, wherein the length of the refrigerant pipe is such that it can be connected to the outdoor unit side connection port of the outdoor unit. 2. The unit housing according to claim 1, wherein a holding member capable of temporarily fixing the refrigerant pipe is provided on a side surface of an air conditioner housing of the indoor unit outside the indoor unit side connection port. Air conditioner. 3. The air conditioner for a unit house according to claim 2, wherein the refrigerant pipes held by the holding member are temporarily held together on the upper surface of the air conditioner housing. 4. The air conditioner for a unit house according to claim 2, wherein the pressing member is removable from the air conditioner housing. 5. The unit residential air conditioner according to claim 1, wherein the refrigerant pipe is filled with nitrogen gas having a predetermined pressure, and a detachable protection cap is provided at a front end portion of the refrigerant pipe. .