JPH031025A - Piping method for air conditioning system for multifloor - Google Patents

Abstract

PURPOSE:To improve executing ability by a method wherein main outbound and inbound pipings are arranged by using a resin pipe having a heat fusing property between an outdoor heat source machine and a heat source device at each floor, headers for outbound and inbound are placed at each floor, and the outdoor machine and the header are interconnected through a twin tube formed by integrally covering the outbound and the inbound pipe by using a heat insulating material. CONSTITUTION:When polybutene is used as a using piping material, during connection, a heat fusing method can be employed and executing ability is improved. Meanwhile, a twin tube has proper flexibility and piping is easy to make. In connection of a main piping 5, a method wherein a socket 6 and the main piping 5 are heated to a melt point and the main piping 5 is inserted in the socket 6 for fusing is employed. An outdoor machine 1 and a header 11 at each floor are interconnected through the main piping 5 comprising outbound and inbound pipes. The header 11 band each indoor machine 3 are interconnected through a twine tube 7. The twin tube 7 is used in a way to cut a long one, and no connection spot is formed in the middle.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention supplies heat medium from a heat source machine installed outdoors in a rooftop ring to indoor units installed on each floor (I ring). This invention relates to a piping method for a heating and cooling system.

[Conventional technology]

From the viewpoints of economy, ease of construction, manageability, etc., systems that perform heating and cooling of an entire building or entire building using one or more heat source devices have become mainstream.

As shown in Figure 5, the piping method for such an air-conditioning system is as follows: A large-diameter main piping 2 using iron pipes is used between the heat source equipment 1 and each floor, and this piping is used between the indoor units 3 on each floor (each room). This is done with a branch pipe 4 using an iron pipe branched from the main pipe 2.

[Issues with conventional technology]

Therefore, the following problems arise.

a. Since all iron pipes are used, there is a risk of corrosion over the long term.

60 Bends and branches have many connections using elbows and branch members, and since these connections are screwed together, skill is required for construction.

C. There is a risk of leakage due to the screw connection.

d. Iron pipes are heavy, have poor workability, and are difficult to repair in the event of a leak.

e. Because the piping is wrapped with insulation material on site, this process is time-consuming.

Since the flow rate changes for each f1 branch, it is necessary to calculate the 20-flow cap change one by one and select a pipe with a different diameter depending on the flow rate, which makes the design difficult.

The purpose of the present invention is to propose a piping method that solves the problem of a % f described above.

[Means to solve the problem]

In order to solve the above problems, the present invention proposes the following piping method.

a. Connect the outdoor heat source equipment and each floor with the main piping using heat-adhesive resin pipes. b. Place an outbound header and a return header on each floor, and connect the main piping to the outdoor heat source equipment and each floor. A piping method in a heating and cooling system for a multi-story air conditioning system comprising means for connecting an outgoing pipe and a return pipe between the header and the indoor unit with twin tubes coated with a heat insulating material, respectively connected to this header.

In the above-mentioned piping, if bolybdenum is used as the piping material, the heat fusion method can be used when making connections, resulting in good workability. Easy to remove. Further, since it has excellent durability and chemical resistance, it is desirable to use a bolybdenum pipe when implementing the present invention, but other resin pipes may be used as long as the conditions are met.

〔Example〕

FIG. 1 shows a main pipe 5 made of bolybdenum.
As shown in Figure 2, when connecting it, use socket 6.
A method is adopted in which the main pipe 5 is heated to its melting point, and the main pipe 5 is inserted into the socket 6 and fused.

However, the above heat fusion method is used to connect bolybdenum tubes, and a cap is used when connecting to metal tubes of a heat source device or an indoor unit.

FIG. 3 shows a twin tube 7 made of bolybdenum in which an outgoing pipe 8 and a return pipe 9 used between the header and the indoor unit are both covered with a heat insulating material 10.

FIG. 4 shows an embodiment of the present invention, where reference numeral 1 indicates an outdoor unit, and the outdoor unit 1 and headers 11 placed on each floor are connected by a main pipe 5 consisting of an outgoing and a return pipe.

The header 11 and each indoor unit 3 are connected by twin tubes 7, respectively.

The twin tube 7 is designed to be cut into a long length and used, and there is no connection point in the middle.

[Effects of the present invention]

By employing the piping method as described above, the present invention can expect the following effects.

a. Since resin pipes are used for both the main piping and twin tubes, there is no worry about corrosion over the long term.

b. When polybdenum pipes are used for the main piping, they can be connected by heat fusion using sockets of the same quality, and workability is good.

C. There are no screw connections, so there is no risk of leakage.

d. Resin tubes are lightweight, and twin tubes are flexible (
It is flexible and can be connected with a single pipe between the header and the indoor unit, making it easy to install, and if repairs are needed, all you have to do is pull out one pipe and replace it with a new one. Repair work is easy.

e. The main piping can be coated with heat insulating coating in advance at the factory, so there is no need for on-site work.

f. Since the pressure is evenly applied to the branch ports of the header, the twin tube eliminates the problem of having to select its diameter based on complicated flow rate calculations.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the main piping used in the present invention, Fig. 2 is an explanatory diagram of the connection of the main piping, Fig. 3 is an explanatory diagram of the twin tube, and Fig. 4 is an explanatory diagram of the piping method according to the present invention. FIG. 5 is an explanatory diagram of a conventional piping method. ■--Outdoor unit 2--Main piping 3--Indoor unit 4--Branch pipe 5--Main piping 6--Socket 7--Twin tube 8...-Outbound pipe Return pipe--Insulation material 11-- Header 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) Perform main piping between the outdoor heat source equipment and each floor using resin pipes with heat-sealing properties. Place an outgoing header and a return header on each floor, and connect the main piping to this A piping method for a heating and cooling system for a multi-story air conditioning system, comprising means for connecting an outgoing pipe and a return pipe between the header and an indoor unit with twin tubes covered with a heat insulating material, respectively connected to a header. (2) The piping method for a heating and cooling system intended for multi-story buildings according to claim (1), wherein polybdenum pipes are used for the main piping and the twin tubes.