JP2577854B2 - Piping method of refrigerant pipe for air conditioner in unit building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of piping a refrigerant pipe for an air conditioner, and more particularly to an indoor unit provided in a lower building unit constituting a unit building and an upper building unit combined therewith. It can be used when connecting between the outdoor unit.

[0002]

2. Description of the Related Art A unit building is constructed by combining a plurality of building units produced in a factory in advance at a construction site. In such a unit building, generally, an indoor unit and an outdoor unit of an air conditioner (hereinafter, referred to as an air conditioner) are provided, and as a method of piping a refrigerant pipe connecting these indoor units and the outdoor unit, The following methods are used. That is, the indoor unit provided inside the building unit and the outdoor unit provided outside the building unit are connected after a plurality of building units are combined at the construction site, and the refrigerant pipe at this time is insulated. A copper pipe covered with a material is piped in accordance with the distance between the indoor unit and the outdoor unit.

[0003] In such piping of the refrigerant pipe, all the piping work is performed on site, and it takes time to mount various brackets for supporting the refrigerant pipe and adjust the dimensions of the refrigerant pipe. In order to efficiently perform piping while ensuring the performance, the present applicant has previously submitted Japanese Utility Model Application No. Hei 3-101761. An outline of this piping method will be described. As shown in FIG. 6, a first-floor building unit 40 and a second-floor building unit 4 mounted on the first-floor building unit 40 and combined therewith.
When the building units 40 and 41 are combined at a construction site, the refrigerant tubes 42 are connected to each other by a connecting member 45 including a male coupling 43 and a female coupling 44. The connection unit connects the indoor unit 46 and the outdoor unit 47. According to such a method, each refrigerant pipe 42 is previously stored in each factory in each building unit 40,
41 at the construction site,
5 only needs to be performed, and the construction site work can be reduced and the construction period can be shortened.

[0004]

However, when the refrigerant pipe 42 is mounted on the outer surface of each of the building units 40 and 41, the connecting operation can be easily performed from the side of the building units 40 and 41. In the case where the refrigerant pipe 42 is provided between the outer wall and the inner wall of the building units 40 and 41, there is a problem that the connection work is difficult. In other words, the building units 40 and 41 have ceiling panels and floor panels pre-installed in the factory in order to reduce the on-site construction work, and therefore the connection between the building units 40 and 41 is between the ceiling panels and floor panels. Since the space is also narrow, it is difficult to connect the refrigerant pipe 42 at the connection portion.

It is an object of the present invention to provide a method of piping a refrigerant pipe for an air conditioner in a unit building which can easily and efficiently connect a refrigerant pipe at a construction site.

[0006]

The present invention relates to a method of piping a refrigerant pipe for an air conditioner for connecting an indoor unit and an outdoor unit in a unit building constituted by combining a plurality of building units. The refrigerant pipes straddling the plurality of building units in the vertical direction are divided for each building unit and mounted in advance at the factory on each building unit, and when the building units are combined at the construction site, The upper end of the refrigerant pipe attached to the building unit on the floor is moved above the floor level of the building unit on the upper floor and connected to the refrigerant pipe of the building unit on the upper floor.

[0007] Each refrigerant pipe may be connected by welding the ends of the refrigerant pipes or by screwing the connecting pipes. In particular, the refrigerant pipes are connected to the connection ends of the refrigerant pipes. When separated, the opening is closed, and when connected to each other, if a pair of connecting members that can communicate with each of the refrigerant pipes is provided, Freon gas or the like serving as a refrigerant is sealed in each refrigerant pipe. It is also possible. Further, if the connection ends of the respective refrigerant tubes are connected by a joint made of a shape memory alloy, the connection operation can be performed easily and reliably as compared with welding or the like.

[0008]

According to the present invention, a refrigerant pipe connecting the indoor unit and the outdoor unit is divided for each building unit, and the refrigerant pipe is attached to each building unit in a factory in advance. Then, when assembling each building unit at the construction site, move the refrigerant pipe of the lower floor building unit until the upper end thereof is above the floor level of the upper floor building unit and connect it to the refrigerant pipe of the upper floor building unit. I do. Since the connection work of the refrigerant pipes can be performed above the floor level of the upper building unit, the connection work is easier and the work efficiency is easier than the connection work between the upper and lower building units, that is, between the ceiling panel and the floor panel. improves.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a unit building 1 to which a piping method for a refrigerant pipe for an air conditioner of the present embodiment is applied. The unit building 1 composed of the first-floor building unit 2 and the second-floor building unit 3 has building units 2 and 3 respectively.
An air conditioner 6 including an indoor unit 4 appropriately provided in the inside and an outdoor unit 5 provided outside the first-floor building unit 2 is provided.

The indoor unit 4 and the outdoor unit 5 are connected to each other by two refrigerant pipes 7 for going up and down and returning. As shown in FIG. 2, the refrigerant pipe 7 is vertically divided into two parts, and is composed of a first-floor refrigerant pipe 7A and a second-floor refrigerant pipe 7B. And a covering material 9 which is a heat insulating material wound around. Also,
A drain pipe 10 for drainage extending to the outside of the building is connected to the indoor unit 4, and this drain pipe 10 is also divided into two in the vertical direction, and a first-floor drain pipe 10A and a second-floor drain pipe 10B
It is composed of

The refrigerant pipes 7A and 7B are connected by a joint 11 made of a shape memory alloy, and the drain pipes 10A and 10B are connected by fitting the drain pipe 10B into the drain pipe 10A. The joint 11 made of a shape memory alloy is formed in a pipe shape from a copper-based alloy or a nickel-titanium alloy. When the copper pipes 8 of the refrigerant pipes 7A and 7B are inserted into the insertion holes of the joints 11 in a state where their inner diameters are enlarged, and the joints 11 are heated, the shape memory alloy shrinks and the communication holes are reduced. Closely tighten this. Once the shape memory alloy has contracted, it does not expand again unless the temperature is lowered to about -40 degrees Celsius. Therefore, the shape memory alloy is maintained in a contracted state at room temperature, and the refrigerant pipes 7A and 7B can be firmly and reliably connected.

As shown in FIG. 2, pipe insertion holes 14 are formed in the floor panel 12 of the first-floor building unit 2 and the second-floor building unit 3 and in the ceiling panel 13 of the first-floor building unit 2, respectively. Further, the refrigerant pipe 7B and the drain pipe 10B of the second-floor building unit 3 are connected to the core material 15
Alternatively, it is fixed to a fixed plywood 16 fixed to the core material 15 by a saddle band 17 or an insulation lock 18. On the other hand, the refrigerant pipe 7A and the drain pipe 10A of the first-floor building unit 2 are tied by the big tie saddle band 19 and vinyl tape at the time of transportation of the building unit 2, and temporarily fixed to the ceiling beam 20 with staples 21. Have been. The refrigerant pipe 7A and the drain pipe 10A
Does not fix other parts to the inner wall panel etc.
If the staples 21 are removed, the staples 21 can be moved up and down.

On the inner wall core 15 to which the refrigerant pipe 7B and the drain pipe 10B of the second-floor building unit 3 are fixed, fastening work for connecting bolts of the building units 2 and 3 from the indoor side and the refrigerant pipe 7 and the drain are performed. Cover material 2 so that pipe 10 can be connected
2 is provided detachably. In addition, this lid material 22
May be detached from the lower end of the inner wall of the building unit 3 to a predetermined height, or may be detached from the lower end to the upper end. Further, the lid member 22 may be removed in advance and attached after the connection operation of the refrigerant pipe 7 and the drain pipe 10.

Next, the piping procedure of the refrigerant pipe 7 in this embodiment will be described. First, the first floor building unit 2,
The second-floor building unit 3 and the like are produced at the factory, and the refrigerant pipes 7A and 7B and the drain pipes 10A and 1
OBs are installed at the factories. At this time, the refrigerant pipe 7B and the drain pipe 10B attached to the second-floor building unit 3 are fixed to the core material 15 of the inner wall panel and the fixed plywood 16 by the saddle band 17 and the insulation lock 18. On the other hand, the refrigerant pipe 7A and the drain pipe 10 attached to the first-floor building unit 2
In A, only the upper end is fastened by the saddle band 19 and fixed to the ceiling beam 20 with staples 21.

Next, the first-floor building unit 2 and the second-floor building unit 3 to which the respective refrigerant pipes 7A and 7B and the drain pipes 10A and 10B are previously attached at the factory are carried into the construction site, and the first-floor building unit 2 is placed on the foundation. Is installed, and a second-floor building unit 3 is further installed to configure the unit building 1.

Thereafter, as shown in FIG. 3, the outdoor unit 5 is connected to the lower end of the refrigerant pipe 7A of the first-floor building unit 2 via the joint 11.
Is connected to the refrigerant pipe 23. Next, the floor panel 12 is opened through the opening of the second-floor building unit 3 from which the lid member 22 is removed.
The staple 21 is removed by inserting a hand into the pipe insertion hole 14 or an appropriate jig is inserted, and the saddle band 19 is pulled up to pull up the refrigerant pipe 7A and the drain pipe 10A as shown in FIG.

When the upper ends of the refrigerant pipe 7A and the drain pipe 10A are raised to the level above the floor panel 12 of the second-floor building unit 3, the refrigerant pipe 7 is connected by the joint 11 as shown in FIG.
Connect to B. When the connection operation is completed, the lid member 22 is attached to the core member 15 of the inner wall panel. In addition, each drain pipe 10A, 1
0B is connected to the refrigerant pipes 7A, 7B and 23 at the same time.
The connection is made by interposing a connecting socket or the like, or fitting one to the other. The indoor unit 4 may be attached to the building unit 3 at a factory in advance, or may be attached after installing the building units 2 and 3 at a construction site.

According to the above-described embodiment, the following effects can be obtained. That is, the refrigerant pipes 7 and the drain pipes 10 are previously attached to the building units 2 and 3 at the factory, and the refrigerant pipes 7A, 7B and 23 and the drain pipes 10A and 1
Since only the connection work of 0B needs to be performed, the on-site work can be reduced and can be performed in a short time as compared with the case where all the piping work is performed on the construction site.

The upper end of the refrigerant pipe 7A and the drain pipe 10A of the first-floor building unit 2 is
Can be moved to a position higher than the level of the floor panel 12 and the connection work can be performed above the floor level of the second-floor building unit 3. Connection work can be facilitated and workability can be improved as compared with a case where the connection is performed in a narrow space between the ceiling panel 13 and the floor panel 12 on the second floor. For this reason,
Even when the refrigerant pipe 7 and the drain pipe 10 are provided between the inner and outer walls, the connection operation can be easily performed, and the appearance can be improved because the refrigerant pipe 7 and the drain pipe 10 are not exposed to the outside.

Since the joint 11 made of a shape memory alloy is used, each refrigerant pipe 7A, 7B, 2
3 can be connected.

The present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved. For example, in the above-described embodiment, the refrigerant pipes 7A, 7B, and 23 are connected by using the joint 11 made of a shape memory alloy. However, for example, a male coupling 43 and a female coupling 44 as shown in FIG.
Or by using welding, brazing, flare joints, various mechanical joints, or the like. In particular, by using a connecting member that is connected only when connected and closes the opening when separated, each refrigerant pipe 7 can be filled in advance with a refrigerant such as Freon gas at a factory. In addition, there is an effect that labor for filling the refrigerant on site can be omitted, and workability on site can be further improved.

Further, in the above embodiment, the refrigerant pipe 7A is formed to have substantially the same dimension as the height of the building unit 2, and the refrigerant pipe 7A is formed.
Was connected by sliding upward, but the refrigerant pipe was formed to be longer than the height of the building unit 2 and was installed in a state of being slackened so as to fit in the building unit 2 before connection. In addition, when connecting the refrigerant pipes, the loosened refrigerant pipes may be extended and the upper ends thereof may be higher than the level of the floor panel 12 of the second-floor building unit 3 to perform the connection work.
In this case, since the lower end position of the refrigerant pipe does not change, there is also an advantage that the order of connecting the refrigerant pipes can be arbitrarily determined.

Further, the present invention is not limited to a two-story unit building 1, but a plurality of building units such as a three-story building or the like are provided vertically, and a plurality of refrigerant pipes 7 of an air conditioner are provided. It can be used when connecting through building units.

[0024]

As described above, according to the piping method for a refrigerant pipe for an air conditioner of the present invention, there is an effect that the connection operation of the refrigerant pipe at a construction site can be easily and efficiently performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire unit building to which an embodiment of the present invention is applied.

FIG. 2 is a perspective view showing a connection portion of a refrigerant pipe.

FIG. 3 is a schematic view showing a connection procedure of a refrigerant pipe.

FIG. 4 is a schematic diagram showing a procedure for connecting refrigerant tubes.

FIG. 5 is a schematic diagram showing a procedure for connecting refrigerant tubes.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit building 2 1st floor building unit 3 2nd floor building unit 4 Indoor unit 5 Outdoor unit 6 Air conditioner (air conditioner) 7,23 Refrigerant pipe 7A 1st floor refrigerant pipe 7B 2nd floor refrigerant pipe 10 Drain pipe 11 Joint 12 Floor panel 13 Ceiling panel 14 Pipe insertion hole

Claims (1)

(57) [Claims] 1. A piping method of an air conditioner refrigerant pipe for connecting an indoor unit and an outdoor unit in a unit building constituted by combining a plurality of building units, wherein the plurality of building units are vertically connected to each other. The refrigerant pipes straddling were divided for each of the building units, and were previously mounted on each of the building units at the factory, and when the building units were combined at the construction site, they were mounted on the lower floor building units. A method of piping a refrigerant pipe for an air conditioner in a unit building, wherein the upper end of the refrigerant pipe is moved above the floor level of the building unit on the upper floor and connected to the refrigerant pipe of the building unit on the upper floor.