JPH0826657B2 - Piping method of air conditioner in building - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of piping a refrigerant pipe of an air conditioner in a building, and is effective for an industrialized house constructed by combining a plurality of housing units produced in a factory. It can be used for.

[Background technology]

For industrialized homes that produce major building materials at the factory so that the work at the construction site can be simplified and omitted, the housing units with standardized dimensions are produced at the factory, and multiple housing units are constructed at the construction site. Some buildings are built by combining unit construction methods.

When arranging the air conditioner in a building constructed in this way, it is necessary to perform the work of piping the refrigerant pipe between the indoor unit and the outdoor unit and the heat insulating member that covers the outer periphery of the refrigerant pipe, Conventionally, this piping work has been performed as an on-site construction work in factory houses as well as in conventional general houses.

[Problems to be Solved by the Invention]

Therefore, conventionally, the industrialization of the piping work of the air conditioner has not been realized, and it has been a construction work on site.

In order to industrialize the piping work of the air conditioner, the refrigerant pipes are attached to the housing unit in advance when each of the housing units is produced in the factory, and the refrigerant pipes are connected to each other when a plurality of housing units are combined at a construction site. It is possible to connect by welding to connect the indoor unit and the outdoor unit, but according to this, the connection portion of the refrigerant pipe has a large resistance during refrigerant circulation (corresponding to about 3 m in pipe length), If there are a plurality of such connecting portions in one refrigerant pipe, substantially all of the output of the air conditioner will be consumed, and thus such a piping method is not practical.

An object of the present invention is to increase the factory implementation rate for the piping work of an air conditioner and to reduce the site work ratio, and not to connect the refrigerant pipes to each other, but to maintain the continuity of the refrigerant pipes. It is an object of the present invention to provide a piping method for an air conditioner in a building, which enables piping while ensuring the above.

[Means for solving the problem]

The piping method of the air conditioner in the building according to the present invention,
A housing unit is produced in a factory, and in a building constructed by combining a plurality of housing units at a construction site, a guide pipe is attached to each of the housing units in which a refrigerant pipe of an air conditioner is installed at the time of factory production of the housing unit, It is characterized in that the connecting ends of the guide pipes are connected to each other when the housing units are combined at a construction site, and the refrigerant pipes are inserted into the inside of the guide pipes.

[Action]

When the housing unit is manufactured at the factory, the guide tube is inserted into the housing unit and is installed in the housing unit when the housing unit is produced at the factory, and when the housing units are combined at the construction site to build the building. Since the guide tubes are connected to each other, at the construction site, it is only necessary to insert the refrigerant tube into the guide tube, which can improve the rate of factory implementation and reduce the site work rate. Since the refrigerant pipe has no connection part in the middle, its continuity can be secured.

〔Example〕

FIG. 1 is a plan view of the first floor of a building to which an embodiment of the present invention is applied, and FIG. 2 is a plan view of the second floor.

This building is an industrialized house built by a capsule unit construction method in which a plurality of housing units 1 formed in a box shape are combined. That is, each housing unit 1 is standardized in size and produced in a factory, and a building is built by combining these housing units 1 at a construction site. As shown in FIG. 3, the housing unit 1 has a framework composed of pillars 2 at four corners and a beam 3 connecting upper and lower ends of these pillars 2 to each other. In this embodiment, as shown in FIGS. 1 and 2, the housing unit 1 includes a large housing unit 1A and a small housing unit 1B having different length dimensions as required.

On the first and second floors of the building, four indoor units 4 of the air conditioner are arranged as shown in Figs. 1 and 2, and the outdoor unit 5 is a mounting stand protruding from the outer wall of the second floor as shown in Fig. 2. Two indoor units 4 are connected to one outdoor unit 5, and four indoor units 4 are connected to one outdoor unit 5.

The refrigerant pipes that are piped between the indoor unit 4 and the outdoor unit 5 are installed inside the guide pipes 7 attached to the respective housing units 1 through which the refrigerant pipes are piped, as shown in an enlarged manner in FIG. It is designed to be inserted and guided. Since the refrigerant pipe is composed of a vapor pipe and a liquid pipe that form a pair of two for the refrigerant going and returning, two guide tubes 7 are provided for one indoor unit 4. FIG. 5 shows a concrete structure of the guide tube 7,
The guide tube 7 is made of a plastic such as polyethylene, and the sheath 8 is covered with a heat insulating material 9 made of highly foamed polyethylene or the like. The sheath 8 is provided with a number of circumferential grooves 10 parallel to each other. It is formed and has flexibility as a whole.

The vapor pipe 12 and the liquid pipe 13 which are the refrigerant pipes 11 inserted into the guide pipes 7 are shown in FIGS. 6 and 7.
The steam pipe 12 shown in FIG. 6 is made of copper, and a pipe member 14 through which CFC, which is a gasified refrigerant, circulates, and this pipe member.
A heat insulating material 15 made of heat-resistant and high-foamed polyethylene or the like covered on the outer side of 14, and a blocking tape 16 made of a laminated material of aluminum and polyester, etc., which is spirally wound around the heat insulating material 15,
An adhesive tape (17) made of aluminum vapor-deposited polyester or the like is attached to a blocking tape (16) along the longitudinal direction of the steam pipe (12).
The liquid pipe 13 shown in FIG. 7 is made of copper, and has a pipe member 18 through which liquefied refrigerant CFC gas flows, and a heat insulating material made of heat-resistant and high-foaming polyethylene or the like covered on the outside of the pipe member 18. 19, an electric cable 20 for electric power and control signals arranged on both left and right sides of the heat insulating material 19, and a cutoff made of a laminated material of aluminum and polyester, etc., which is spirally wound around the heat insulating material 19 and the electric cable 20. The tape 21 and the adhesive tape 22 made of aluminum vapor-deposited polyester or the like attached to the blocking tape 21 along the longitudinal direction of the liquid pipe 13 electrically connect the indoor unit 4 and the outdoor unit 5 with the electric cable 20. To electrically control these and to supply power,
The electric wire 23 is wired inside.

The pipe member 14 of the vapor pipe 12 has a large diameter because the gasified CFC gas flows therethrough, whereas the pipe member 18 of the liquid pipe 13 has a small diameter because the liquidized CFC gas flows therethrough. Therefore,
As described above, even if the liquid pipe 13 is the one in which the electric cable 20 is attached to the outer peripheral portion of the pipe member 18 via the heat insulating material 19, the liquid pipe 13 is not so different from the vapor pipe 12 in thickness. Can be configured.

FIG. 8 shows a connection structure of the ends of the guide pipes 7 between the housing units 1 shown in FIG. A connecting pipe 24 is connected to an end of the guide pipe 7, and the connecting pipe 24 includes a tip portion 25, a central portion 26 and a rear end portion 27, which are screw portions 28, 29.
The connection pipe 24 is configured by screwing in series with. When the tip portion 25 and the central portion 26 are screwed together, the tip portion 25 is inserted from the outside into the hole 3A formed in the beam 3 constituting the housing unit 1 and screwed to the central portion 26, As a result, the connecting pipe 24 is attached to the beam 3 with the tip portion 25 protruding from the outer surface of the housing unit 1. A taper surface 25A is formed on the inner surface of the outer end of the tip tube 25, and the taper surface 25A guides when the refrigerant tube 11 is inserted. When the central portion 26 and the rear end portion 27 are screwed together, a toothed washer-shaped locking member 30 having a plurality of claw portions 30A formed in the circumferential direction is interposed and fixed therebetween. . Rear end
By inserting the sheath 8 of the guide tube 7 from the rear side of the sheath 27 while elastically deforming the claw portion 30A, the groove 10 of the sheath tube 8 is inserted.
The claw portion 30A of the locking member 30 is locked to the sheath tube 8 to prevent the sheath tube 8 from coming off, whereby the guide tube 7 and the connection tube 24 are connected.

On the outer surface of the beam 3, a short-sized elastic tube 31 made of a heat insulating material is used.
Is fixed by adhesion or the like in a state of communicating with the tip end portion 25 of the connection pipe 24, and this elastic pipe 31 has a larger protrusion amount from the housing unit 1 than the tip end portion 25.

The guide pipe 7 and the refrigerant pipe 11 are arranged above the ceiling of the building, that is, above the housing unit 1, and the indoor unit 4 is arranged on the floor surface of the room of the building. It is adapted to be inserted into the inside of the guide tube 32 shown, guided downward from the ceiling underside, and connected to the indoor unit 4.

9 and 10 show a specific structure of the guide tube 32. The guide tube 32 is a pair of two guide tubes 32 like the guide tube 7. Each of the guide tubes 32 has the same structure and has a horizontal portion 33 on one end side.
And the vertical portion 34 on the other end side and the horizontal portion 33 and the vertical portion 34.
And a bracket 36 provided between the vertical portion 34 and the curved portion 35. The horizontal portion 33, the vertical portion 34, and the bracket 36 are each made of hard vinyl chloride or the like, and the curved portion 35 is made of a heat insulating material such as highly foamed polyethylene.

As shown in FIG. 9, the brackets 36 of the two guide pipes 32 are common, and the vertical portion 34 at the end is formed on the beam 3 of the housing unit 1 which becomes the ceiling beam of the building as shown in FIG. The bracket 36 is applied to the beam 3 by inserting it into the hole 3B, and the screw 38 is inserted into the hole 37 provided in the bracket 36.
By connecting the bracket 36 to the beam 3 with the guide tube 32
Are attached to the housing unit 1. The end of the sheath 8 of the guide tube 7 is inserted into the horizontal portion 33, and the split groove of the horizontal portion 33 is inserted.
The 39 is narrowed by tightening the screws 40, so that the sheath tube 8
Is connected to the guide tube 32. A heat insulating pipe 41 that guides the refrigerant pipe 11 to the indoor unit 4 in a heat insulating state is connected to the vertical portion 34.

The guide pipe 7, the connecting pipe 24, the elastic pipe 31, and the guide pipe 32 described above are each housing unit 1 in which the refrigerant pipe 1 is installed.
Is installed in advance when the housing unit 1 is produced in the factory, and the guide pipe 7 is installed in accordance with the piping position of the refrigerant pipe 1 determined by the floor plan of the building in which the arrangement positions of the indoor unit 4 and the outdoor unit 5 are determined. , Connection tube 24, elastic tube 31, induction tube 32
Is attached to a predetermined position of the housing unit 1. As shown in FIG. 4, the guide tube 7 is fixed by a fixture 42 and is in an immovable state.

The housing unit 1 produced as a unit in a factory is carried to a construction site, and these housing units 1 are combined in the front, back, left, right, and up and down to build a building. Refrigerant tube 11
When combining the housing units 1 in which
The elastic tubes 31 provided so as to project from the housing unit 1 are butted against each other as shown in FIG. As a result, the ends of the guide tubes 7 to be connected to each other are connected to each other by the connecting tube 2
4. Even if there is a gap 43 between the housing units 1 due to the connection through the elastic tube 31, the guide tube 7 is connected to the guide tube 7 in a state of being shielded from the outside by the elastic tube 31 made of a heat insulating material. Even if an error occurs in the longitudinal direction of the connecting pipe 24 at the position where the housing unit 1 is arranged, the elastic pipe 31 can be expanded and contracted to make a connection while absorbing the error.

After assembling each housing unit 1, guide the refrigerant pipe 11 from the insertion hole provided in one of the guide pipes 7, specifically, the end of the guide pipe 7 on each indoor unit 4 side or outdoor unit 5 side. It is inserted into the tube 7 by pushing it.
The refrigerant pipe 11 is inserted into the respective guide pipes 7 through the connecting pipe 24 and the elastic pipe 31, and is further inserted into the guide pipe 32, whereby the refrigerant pipe 11 is bent downward from the horizontal direction of the guide pipe 32 in the vertical direction. After being guided through the portion 35 to the indoor unit 4 from the back of the ceiling and the above-described work of inserting the refrigerant pipe 11 is completed, both ends of the refrigerant pipe 11 are connected to the indoor unit 4 and the outdoor unit 5.

As described above, the guide pipes 7 and the like are attached to the housing unit 1 in advance when the housing unit 1 is produced in the factory, and the guiding pipes 7 are connected to each other when the housing unit 1 is assembled at the construction site to build a building. Therefore, at the construction site, only the work of inserting the refrigerant pipe 11 into the guide pipe 7 needs to be performed, that is, the rate of implementation of the factory in the industrialized house is increased, and the work ratio at the construction site is reduced. It is possible to improve efficiency and reduce costs.

Even if there is a gap 43 between the housing units 1 through which the refrigerant pipes 11 are piped as shown in FIG. 8, the connecting pipes 24 are connected by the elastic pipes 31 in a state of being blocked from the outside. The refrigerant pipe 11 inserted in the portion is not exposed to the outside,
Therefore, the safety of the refrigerant tube 11 is ensured, and the thermal insulation of the refrigerant tube 11 is ensured by the elastic tube 31 made of a heat insulating material.

Furthermore, when the refrigerant pipe 11 is inserted into the guide pipe 32 and guided vertically downward from the ceiling ceiling, the guide pipe 32 is provided with the curved portion 35 having a large radius of curvature, so that the refrigerant pipe 11 is bent. Without changing the direction, the direction is surely changed to the vertical downward direction and advances toward the indoor unit 4. Also,
Since the guide pipe 32 is connected to the ceiling beam 3 by the bracket 36, the refrigerant pipe 11 can be guided toward the indoor unit 4 without opening a hole for inserting the refrigerant pipe in the ceiling boat attached to the ceiling beam 3. The advantage is that it does not damage the ceiling board.

Further, the liquid pipe 13 of the refrigerant pipe 11 has a structure in which the electric cable 20 is integrally attached,
By inserting 13 into the guide tube 7 or the like, it becomes possible to perform the work of wiring the electric cable 20 in the building, and the workability is improved by the dual use of the work. Even if the liquid pipe 13 is provided with the electric cable 20 as described above, since the thicknesses of the steam pipe 12 and the liquid pipe 13 are not so different as described above, these steam pipe 12, liquid pipe 13 The same guide tube 7 etc. can be used for 13. Further, since the shielding tapes 16 and 21 made of a laminated material of aluminum and polyester, etc. are wound around the outermost circumferences of the vapor pipe 12 and the liquid pipe 13, respectively, the guide pipes 7 of the vapor pipe 12 and the liquid pipe 13 are wound. The slip during insertion can be improved, and insertion work can be facilitated.

In the present embodiment described above, a plurality of indoor units were connected to one outdoor unit, but the present invention can also be applied to the case where one indoor unit is connected to one outdoor unit, Further, the invention can be applied to a case where the vapor pipe and the liquid pipe of the refrigerant pipe are inserted into the same guide pipe instead of being inserted into separate guide pipes.

[Advantages of the Invention] According to the present invention, it is possible to improve the factory implementation rate for piping work of an air conditioner, reduce the site work ratio, and not connect the refrigerant pipes to each other, so that the refrigerant The continuity of the pipe can be ensured and the increase of the conduit resistance can be prevented.

[Brief description of drawings]

Fig. 1 is a plan view of the first floor of the building, Fig. 2 is a plan view of the second floor,
FIG. 3 is a perspective view of a frame of a housing unit constituting a building, FIG. 4 is a partially enlarged view of FIG. 1, FIG. 5 is a sectional view of a guide pipe through which a refrigerant pipe is inserted, and FIG. A), (B)
Is a cross-sectional view and side view of a vapor pipe of the refrigerant pipes, FIGS. 7A and 7B are cross-sectional views and side views of liquid pipes of the refrigerant pipes, and FIG. 8 is a guide between the housing units. FIG. 9 is a partial cross-sectional view showing a connecting state of the tubes, FIG. 9 is a plan view of the guide tube, and FIG. 10 is a partial cross-sectional view in a state where the guide tube is attached to the beam. 1 ... Housing unit, 2 ... Pillar, 3 ... Beam, 4 ... Indoor unit, 5 ...
Outdoor unit, 7 ... Guide pipe, 11 ... Refrigerant pipe, 12 ... Steam pipe, 13 ...
Liquid pipe, 14, 18 ... Pipe member, 20 ... Electric cable, 23 ... Electric wire, 24 ... Connection pipe, 31 ... Elastic pipe, 32 ... Induction pipe, 33 ... Horizontal part, 34 ... Vertical part, 35 ... Curved part.

Claims (1)

[Claims] 1. In a building in which a housing unit is produced in a factory and a plurality of housing units are combined at a construction site, a guide pipe is installed in each housing unit in which a refrigerant pipe of an air conditioner is installed. The air in the building, which is installed at the time of factory production, connects the connecting end portions of the guide pipes at the time of combining the housing units at the construction site, and inserts the refrigerant pipes inside the guide pipes Harmonizer piping method.