JP3158553U - Connecting structure of refrigerant piping in multi-story building - Google Patents

Abstract

[PROBLEMS] To provide a refrigerant pipe connection structure in a multi-story building capable of greatly improving work efficiency while being manufactured at a low cost by simple structural improvement while being connected to a refrigerant pipe at a construction site. To provide. With a union socket having an inner diameter larger than the outer diameter of the refrigerant pipe, the refrigerant pipe of the lower-layer refrigerant pipe unit and the refrigerant pipe unit for the upper floor are interposed between the two. The union socket and the upper and lower pipes were fixed by welding. [Selection] Figure 4

Description

  The present invention relates to a refrigerant pipe connection structure in a multi-story building.

The refrigerant of the air conditioning equipment in the multi-story building is sent and refluxed between the outdoor air conditioner installed on the roof and the indoor air conditioner.
Therefore, the refrigerant of the air conditioner installed on each floor is returned to the rooftop and sent indoors by piping extending inside or outside the building. As a method of installing the pipe inside the building as such a refrigerant pipe, a blow-through shaft is used at the top, but it is difficult in terms of construction method, space securing, etc., and usually it is taken out of the building and installed along the outer wall It is common.

As such a refrigerant pipe, for example, the following technique is known as a pipe inside a building or a pipe to an external wall.
JP-A-6-123448 JP-A-5-196261

As conventional refrigerant pipes, pipes for each floor must be connected to each other, both inside and outside the building. Connecting these pipes at the construction site means that if the lower floor pipes are laid down and the upper floor pipes are lowered from above, it will be difficult to center, and labor will be required for the connection work. Cost.
In order to solve these problems, there is an idea that buildings of each level are completed at the factory, refrigerant piping is laid on each level and transported to the site, and refrigerant piping is connected at the same time as each layer is stacked. Proposed.

  However, when installed in a building, factory installed refrigerant piping requires a large shaft in the case of high floors, which causes structural strength problems and loss of space, and poor piping connection workability. When laying in advance on the outer wall of the building, it will be in the state of protruding outside, so the conveyance method is difficult, and the piping deforms due to contact with many things, causing problems in centering, making connection difficult There is a problem.

  In view of such problems, the present invention is a multi-storey building that can be connected to refrigerant piping at a construction site, and can be manufactured at a low cost by a simple structural improvement, while the work efficiency can be greatly improved. It aims at providing the connection structure of the refrigerant | coolant piping in.

In order to achieve the above object, the refrigerant pipe connection structure in the multi-storey building according to the present invention has an outdoor air conditioner laid on the roof, and a plurality of refrigerant pipes juxtaposed to form a unit with a rack cover. The refrigerant pipe unit for the lower floor is fixed to the building outer wall, the refrigerant pipe unit for the upper floor is suspended by a crane and lowered to connect the pipes of both upper and lower refrigerant pipe units. A connected structure,
With a union socket having an inner diameter larger than the outer diameter of the refrigerant pipe, the refrigerant pipe of the refrigerant pipe unit for the lower floor and the refrigerant pipe unit for the upper floor are fitted with both interposed therebetween Connected, the union socket and the upper and lower pipes were fixed by welding,
It is characterized by that.

The union socket referred to in the present invention is a single pipe and has an inner diameter that is larger than the outer diameter of the refrigerant pipe. Moreover, the unitization of piping differs in the number of juxtaposed laying according to the hierarchy of the building to apply.
Moreover, although welding is what is called brazing, the concept of general welding according to this is also included.

  According to the refrigerant pipe connection structure in the multi-story building according to the present invention, the refrigerant piping unit for the lower floor is fixed to the outer wall of the building, the refrigerant piping unit for the upper floor is suspended by a crane and lowered, and both upper and lower refrigerants are As a refrigerant piping connection structure that connects the piping of the piping units, a large-diameter union socket can be used to improve the manufacturing of the refrigerant piping unit, and the upper and lower refrigerant piping can be centered even when installed on-site. The union socket's up / down / left / right error (three-dimensional direction) absorption function can be performed easily, and workability can be greatly improved compared to welding between the upper and lower refrigerant pipes, and the construction period can be shortened. There is an advantage that can be.

  In carrying out the refrigerant pipe connection structure in the multi-story building according to the present invention, the diameter of the upper end of the pipe of the refrigerant pipe unit for the lower floor is expanded by flaring, and the union socket is placed inside the pipe. It is preferable that a predetermined length of the lower end is inserted, the lower end of the pipe of the refrigerant piping unit for the upper floor is inserted into the union socket, and the union socket and the upper and lower pipes are welded.

  With this configuration, the initial fitting of the large-diameter union socket can be easily performed and the union socket can be positioned with respect to the lower refrigerant pipe. The operation of inserting into the union socket can be easily performed.

Furthermore, it is preferable that the union socket is configured to have a length that can be adapted to the initial relative interval between the upper and lower pipes by sliding adjustment with respect to the upper and lower pipes.
In this way, when the upper and lower refrigerant piping units are confronted with each other, even if there are some errors in the spacing and centering, the union socket slide adjustment can absorb and work can be done easily and the subsequent welding Work can be done efficiently.

A preferred embodiment of a refrigerant piping method and a refrigerant piping unit in a multi-storey building according to the present invention will be described in detail below with reference to the drawings. Necessary outdoor air conditioners (not shown) are provided on the roof of this multi-story building.
FIG. 1 is a front view of a state in which a piping unit 1 is suspended by a tower crane, FIG. 2 is a side view thereof, and FIG. 3 is a schematic perspective view of a main part.
In FIG. 1, reference numeral 2 denotes a suspension means, which is composed of wires, hooks, ropes, shackles, round bolts, rack hanging jigs and the like suspended from a tower crane (not shown). Since such a suspending means 2 is a well-known means, detailed illustration and description are omitted.

As shown in the front view, 11 refrigerant pipe units 1 are juxtaposed (to the wall surface of the building), and correspondingly, the same number of pipes are juxtaposed (to the wall surface of the building) for return. The whole is fixed in parallel with the rack cover 3 (made of high corrosion-resistant plated steel plate) and unitized. Each pipe 4 is fixed to the rack cover 3 by a nylon band 5 at a predetermined interval so as not to be displaced.
The rack cover 3 is provided with a rack fixing hardware 5 and is fixed to a building-side rack receiver (for example, a balcony steel frame). Since the connection between the refrigerant piping unit 1 and the room air conditioner is the same as in the conventional method, a detailed description thereof is omitted here.

  FIG. 4 is a front view showing one of the pipe connection steps (showing one of the pipe and return pipe), and the lower end of the pipe 4 of the refrigerant pipe unit 1A for the upper floor and the refrigerant pipe unit 1B for the lower floor. A union socket 6 is interposed between the upper end of the pipe 4. The union socket 6 is a single pipe (made of copper) whose inner diameter is larger than the outer diameter of the pipe. Then, as shown in the left diagram of FIG. 4, the upper and lower pipes 4 are connected by heating the upper end of the lower pipe 4 to expand the diameter by flaring, and inserting the lower end of the union socket 6 therein. The lower end portion of the upper pipe 4 is inserted into the upper end portion of the union socket 6, and the position of the union socket 6 is adjusted by sliding in the vertical direction, and then the joint portion between the union socket 6 and the upper and lower pipes 4 is welded. It is done by fixing.

  FIG. 6 is a front view showing one step of pipe connection of the refrigerant pipe unit 1, the pipe on the right side of the figure is connected, and the adjacent pipe is scheduled to be connected next after the heat insulating material is removed. Reference numeral 7 denotes a work floor for performing a connecting operation such as welding. FIG. 6 is a cross-sectional view of FIG. 5 and shows a state in which one side surface of the rank cover 3 is removed and opened.

  Of course, when the upper and lower pipes 4 are connected, as described above, the heat insulating material surrounded by the pipes 4 is removed and a work is performed. Further, in the welding operation, the wet waste is used for curing to eliminate the influence of the welding operation.

7 to 12 show the steps of the connecting operation.
As shown in FIG. 7, the refrigerant pipe unit 1 is lowered and brought closer to the lower refrigerant pipe unit 1 from above by a tower crane, and a union socket 6 is interposed between the upper and lower pipes 4.
As shown in FIG. 8, the rack covers 3 of the upper and lower refrigerant piping units 1 are connected and fixed. At this time, the upper and lower piping intervals are set to about 15 mm for baking.
As shown in FIG. 9, the union socket 6 slides and adjusts the distance from the upper pipe 4 from the state where it is inserted and installed in the lower pipe 4 that is flared. Thereafter, the union socket 6 and the upper and lower pipes 4 are welded.
As shown in FIG. 10, after welding is completed, the exterior cover such as a heat insulating material is repaired.
As shown in FIG. 11, the joint of the exterior cover is stopped with an adhesive 9 (adhesive for polypropylene and polyethylene). Then, as shown in FIG. 12, the tape winding 10 is performed from the top of the exterior cover and completed.

  Thus, in implementation of this invention, the said union socket 6 is comprised by the length which can be adapted to the relative space | interval of an initial setting upper and lower piping by carrying out slide adjustment with respect to the said upper and lower piping 4. When the upper and lower refrigerant piping units 1 face each other, even if there are some errors in the spacing and centering, they can be absorbed by adjusting the slide of the union socket, making the work easier and the subsequent welding work efficient. It can be done.

  Further, a diameter of the upper end of the pipe 4 of the refrigerant piping unit 1 for the lower floor is expanded by flaring, and a predetermined length of the lower end of the union socket 6 is inserted therein, so that the upper floor Since the lower end of the pipe 4 of the refrigerant pipe unit 1 is inserted into the union socket 6 and the union socket 6 and the upper and lower pipes 4 are welded, an initial fitting of a large-diameter union socket is performed. Since the union socket can be positioned with respect to the lower refrigerant pipe, the workability is improved, and the operation of inserting the upper refrigerant pipe into the union socket can be easily performed.

Industrial application fields

  The refrigerant pipe connection structure in the multi-storey building according to the present invention is a system in which the refrigerant pipe is unitized, the upper and lower units are brought close to each other, and the upper and lower pipes are connected by a union socket. The range of application is wide.

The front view of the refrigerant | coolant piping unit concerning this invention. The side view of the refrigerant | coolant piping unit concerning this invention. The perspective view of the principal part of the refrigerant | coolant piping unit concerning this invention. The process figure of the connection part of the refrigerant | coolant piping unit concerning this invention. The front which shows the 1 process state of the connection of the refrigerant | coolant piping unit concerning this invention. The cross-sectional view which shows the 1 process state of the connection operation | work of the refrigerant | coolant piping unit concerning this invention. The process drawing of the laying construction of the refrigerant piping unit according to the present invention. The process drawing of the construction of the refrigerant piping unit according to the invention. The process drawing of the laying construction of the refrigerant piping unit according to the present invention. The process drawing of the laying construction of the refrigerant piping unit according to the present invention. The process drawing of the laying construction of the refrigerant piping unit according to the present invention. The process drawing of the laying construction of the refrigerant piping unit according to the present invention.

1: Refrigerant piping unit 4: Piping 6: Union socket

Claims (3)

An outdoor air conditioner is installed on the rooftop, and a refrigerant piping unit that is united with rack covers by juxtaposing multiple refrigerant pipes is manufactured at the factory, and the refrigerant piping unit for the lower floor is fixed to the outer wall of the building, for the upper floor The refrigerant pipe unit is suspended by a crane and lowered to connect the pipes of both the upper and lower refrigerant pipe units.
With the union socket having an inner diameter larger than the outer diameter of the refrigerant pipe, the refrigerant pipe of the lower-level refrigerant pipe unit and the refrigerant pipe unit for the upper floor are fitted in a state of being interposed therebetween. Connected, the union socket and the upper and lower pipes were fixed by welding,
A refrigerant pipe connection structure in a multi-story building.   The refrigerant pipe unit for the upper floor is expanded by flaring the predetermined length of the upper end of the pipe of the refrigerant pipe unit for the lower floor, and the predetermined length of the lower end of the union socket is inserted therein. 2. The refrigerant pipe connection structure in a multi-story building according to claim 1, wherein a lower end of said pipe is inserted into said union socket, and said union socket and said upper and lower pipes are welded.   The length of the union socket is configured to be adapted to an initial relative distance between the upper and lower pipes by sliding adjustment with respect to the upper and lower pipes. Of refrigerant piping in a multi-story building.

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