JPH09101091A - Heat exchanging pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fold a heat exchanging pipe without use of a machine, etc., and hence reduce the cost by deformably providing the heat exchanging pipe which permits a fluid to flow therein, and in which the fluid is used as a medium for heat exchange between the inside of the pipe and the outside of the same. SOLUTION: A floor heating pipe 12 as a heat exchanging pipe consists of a bellows type expansion pipe joint. An outer peripheral surface of the floor heating pipe 12 is formed into a corrugated shape where a large diameter part 13 and a small diameter part 14 are alternately continuously disposed. For the wall thickness of the floor heating pipe 12 both of the large diameter part 13 and the small diameter part are uniform. Accordingly, an inner peripheral surface of the floor heating pipe 12 is also formed into a corrugated shape. When the floor heating pipe 12 is mounted on a panel 11, the floor heating pipe 12 is first cut into a predetermined length. Then, a portion of the cut floor heating pipe 12 which forms a corner part in bent with a hand. Since the floor heating pipe 12 consists of the bellows type expansion pipe joint, it can be easily deformed even with a hand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange tube used in a floor heating system or the like.

[0002]

2. Description of the Related Art Conventionally, for example, as a floor heating system, as shown in FIG. 3, a plurality of straight pipes 52 made of copper pipe or the like are mounted in parallel on the lower surface of a panel 51 constituting a floor. A corner pipe 53 is connected to an end of the adjacent straight pipe 52 by welding (low temperature brazing). Straight pipe 5
The heat of the fluid is radiated from each of the tubes 52 and 53 by causing the fluid heated by the heater or the like to flow in the 2 and the corner tube 53. As a result, the panel (floor) 51 is heated.

[0003]

However, the above floor heating system has the following problems. (1) Since the straight pipe 52 and the corner pipe 53 are connected to each other by welding, the work process is troublesome, which causes a high manufacturing cost.

(2) If the straight pipe 52 and the corner pipe 53 are not welded properly, the fluid may leak.
Therefore, the welding work must be performed carefully, and it is necessary to inspect whether or not the fluid is leaking. As described above, there are many manufacturing work steps, which has been a cause of increasing the manufacturing cost.

In order to solve this problem, there is also a pipe in which the straight pipe 52 is bent using a dedicated machine to integrally form a corner portion corresponding to the corner pipe 53. However, in this case, there is a problem that a dedicated machine is required, and the dimension of the bending portion that becomes the corner portion is accurately measured and then the bending is performed by the machine, which is very troublesome.

(3) In order to evenly heat the panel (floor) 51, the interval between the adjacent straight pipes 52 is set narrow. Therefore, there is a problem that the number of straight pipes 52 and corner pipes 53 used increases and the cost increases.

The present invention has been made in order to solve the above problems, and a first object of the present invention is to fold it easily without using a machine or the like and to reduce the manufacturing cost. To provide a replacement tube.

A second object is to provide a heat exchange tube having a high heat exchange rate.

[0009]

In order to achieve the above object, the gist of the invention as defined in claim 1 is that it comprises a deformable tube.

The gist of the invention according to claim 2 is that the pipe is composed of one pipe.
The gist of the invention according to claim 3 is that the pipe is a bellows type expansion joint.

Therefore, in the invention described in claim 1, since the pipe is deformable, the pipe itself can be easily bent without using a separate corner pipe at the corner portion.

According to the invention described in claim 2, in addition to the function of the invention described in claim 1, since one tube can be bent and mounted on the entire floor, the manufacturing cost can be reduced. According to the invention described in claim 3, in addition to the action of the invention described in claim 1 or 2, the outer peripheral surface of the bellows type expansion joint is formed in a wavy shape by the large diameter portion and the small diameter portion. From
High heat exchange rate.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in a floor heating system will be described below with reference to the drawings.

As shown in FIG. 1, a panel 1 constituting a floor
1 is equipped with a floor heating pipe 12 as a heat exchange pipe. The floor heating pipe 12 is composed of one bellows type expansion joint (bellows pipe). The floor heating pipe 12 in the present embodiment uses a copper pipe having high thermal conductivity. The outer peripheral surface of the floor heating pipe 12 is formed in a wave shape in which large diameter portions 13 and small diameter portions 14 having different diameters are alternately continuous. The wall thickness of the floor heating pipe 12 is uniform in both the large diameter portion 13 and the small diameter portion 14. Therefore, the floor heating pipe 12
The inner peripheral surface of is also formed in a wave shape.

When the floor heating pipe 12 is mounted on the panel 11, the interval α between the adjacent straight portions 15 of the floor heating pipe 12 is larger than the interval β of the straight pipe 52 in FIG. Therefore, in the present embodiment, the number of straight portions (corresponding to the straight pipes 52 of FIG. 3) 15 and the number of corner portions (corresponding to the corner pipes 53 of FIG. 3) 16 are smaller than those of the floor heating pipes of FIG. . A fluid (hot water or the like) heated by a heater (not shown) circulates in the floor heating pipe 12.

Next, the operation of mounting the floor heating pipe 12 on the panel 11 will be described. First, the floor heating pipe 12 is cut into a predetermined length. Next, the cut portion of the floor heating pipe 12 to be the corner portion 16 is bent by hand. Since the floor heating pipe 12 is composed of a bellows type expansion joint, it can be easily deformed by hand.

In this embodiment, since the floor heating pipe 12 is configured as described above, the following effects can be obtained. The floor heating pipe 12 is composed of a single bellows type expansion pipe joint that can expand and contract. Thereby, the welding process for connecting the straight part 15 and the corner part 16 is not required. This can reduce the manufacturing cost. Further, since the floor heating pipe 12 of the present embodiment is seamless, fluid leakage is reduced. As a result, the reliability of the floor heating system can be improved.

Further, since the large-diameter portion 13 and the small-diameter portion 14 are formed on the outer peripheral surface of the floor heating pipe 12, and the shape thereof is corrugated, the heat radiation efficiency (heat exchange rate) is high. That is, even if the outer diameter of the floor heating pipe 12 (the outer diameter of the large diameter portion 13) is the same as the straight pipe 52 described in FIG. 3, the floor heating pipe 12 has a wavy shape. Because of this, its surface area increases. Thereby, the floor heating pipe 12 of the present embodiment
Has a high heat exchange rate, resulting in high heat dissipation efficiency. As a result, even if the distance α between the straight portions 15 is wide,
The panel (floor) 11 can be sufficiently warmed, and the length of the floor heating pipe 12 can be shortened, and the manufacturing cost can be further reduced.

The present invention can also be configured as follows. (1) In the above embodiment, the floor heating pipe 12 is embodied as the heat exchange pipe, but it is embodied as a pipe used for a heating system installed on the ceiling or installed on a wall, for example. It may be embodied as a tube used in a heating system.

(2) In the above embodiment, the floor heating pipe 12 as a heat exchange pipe is attached to the panel 11, but this may be embodied by embedding the pipe 12 in concrete, for example.

(3) In the above embodiment, the pipe 12 for the heating system is embodied as the heat exchange pipe, but it may be embodied as the heat exchange pipe for the cooling system. in this case,
The fluid (cold water or the like) having a temperature lower than the ambient temperature flows into the heat exchange pipe. As described above, even if the pipe 12 is embodied as a cooling system, the pipe 12 has a large surface area, so that the heat exchange rate is high, and as a result, the heat absorption efficiency can be improved.

(4) In the above embodiment, the floor heating pipe 12 as a heat exchange pipe is attached to the panel 11 constituting the building, but it is composed of a unit in which a heater, a pipe and the like are incorporated together. The present invention may be embodied in a cooling and heating device that is installed.

(5) In the above embodiment, the floor heating pipe 12 serving as the heat exchange pipe is composed of one expandable bellows type expansion pipe joint, but a plurality of bellows type expansion pipe joints are connected. You may embody it.

(6) In the above embodiment, the floor heating pipe 12 as the heat exchange pipe is made of copper, but it is made of metal other than copper (for example, stainless steel or iron). The heat exchange pipe may be configured with a bellows type expansion joint. Further, the floor heating pipe may be configured by a rose type expansion joint made of synthetic resin other than metal.

(7) In the above embodiment, the floor heating pipe 12 as the heat exchange pipe is provided with a plurality of large diameter portions 13 and small diameter portions 15.
The bellows type expansion pipe joint shown in FIG. 2 is used for the floor heating pipe 30.
May be configured. That is, the straight small-diameter portion 3
The floor heating pipe 30 may be configured by a bellows type expansion pipe joint in which one spiral large-diameter portion 32 is integrally formed around the circumference 1. Even if this floor heating pipe 30 is used, the same effect as in the above embodiment can be obtained.

(8) In the above embodiment, the floor heating pipe 12 is used as a heat exchange pipe, but this is a base frame (formwork) used when constructing a base frame in a building.
It may be attached to the and embodied. In this case, warm water is made to flow through the heat exchange pipe attached to the foundation frame. Therefore, the concrete poured into the foundation frame is heated by the heat radiated from the heat exchange tube. As a result, it is possible to perform concrete construction work in a cold season when the temperature drops to below freezing (near freezing). That is, the heat radiated from the heat exchange tube prevents the water contained in the concrete from freezing, and prevents the concrete from cracking during hardening of the concrete.

(9) The heat exchange tube of the present invention may be provided in the cooling means of the washing machine for heating the organic solvent to vaporize it and washing the object to be washed with the vapor. That is, by cooling the vaporized organic solvent, the organic solvent is liquefied again. As a result, the liquefied organic solvent falls under its own weight into the original container and is reduced.

(10) A heat exchange tube may be attached to a container and embodied as a warm container or a cold container. (11) The heat exchange tube of the present invention is attached to a roof in a cold region,
Warm water is made to flow in the same pipe. That is, it may be embodied as a heat exchange tube for melting snow on the roof.

(12) A heat exchange pipe is buried in a road in a cold region, and hot water is caused to flow in the pipe. That is, it may be embodied as a heat exchange tube for preventing road surface freezing.

[0030]

According to the invention described in claim 1, the pipe itself can be easily bent without using a separate corner pipe. As a result, the welding process can be omitted and the cost can be reduced.

According to the invention described in claim 2, according to claim 1
In addition to the effect of the invention described in (1), one tube is mounted on the entire body to be mounted, so that the manufacturing cost can be significantly reduced.

According to the invention described in claim 3, claim 1
Alternatively, in addition to the effect of the invention as set forth in claim 2, since the outer peripheral surface of the bellows type expansion pipe joint is formed in a corrugated shape by the large diameter portion and the small diameter portion, the surface area can be increased and the inside and outside of the pipe can be connected. The heat exchange rate between the two can be improved. Thereby, even if the total length of the tube is shortened, a sufficient heat dissipation effect or heat absorption effect can be obtained, and the cost can be further reduced.

[Brief description of the drawings]

FIG. 1A is a schematic bottom view of a floor in an embodiment embodying the present invention, and FIG. 1B is an enlarged sectional view of part A of FIG.

FIG. 2 is a partially enlarged front view of a floor heating pipe according to another embodiment.

FIG. 3A is a schematic bottom view of a conventional floor, and FIG.
FIG. 7A is an enlarged cross-sectional view of part B of FIG.

[Explanation of symbols]

11 ... Panels constituting floor, 12, 30 ... Floor heating pipes as heat exchange pipes.

Claims (3)

[Claims] 1. A heat exchange tube in which a fluid is made to flow inside the tube and heat exchange is performed between the inside and outside of the tube using the fluid as a medium, wherein the tube is deformable. tube. 2. The heat exchange tube according to claim 1, wherein the tube is composed of one tube. 3. The heat exchange pipe according to claim 1, wherein the pipe is a bellows type expansion joint.