JPS6111594A - Collapsible heat exchanger - Google Patents

Abstract

PURPOSE:To permit to carry the heat exchanger through a small opening by a method wherein collapsible support bodies are provided in parallel with intervals and the heat exchanger of resin, provided with a flexibility, is attached to the support bodies in spread condition so as to show a scrool shape or meandering shape. CONSTITUTION:The resin pipe 1, capable of being straightened from continuous coil of several ten or several hundred meters and of being bent with a curvature determined in accordance with a requirement, is worked into a scrool type and is fixed to a plurality of supporting rods 2 through pipe fixing fitments 3 at several places so that the curvatures and positions of curved sections are stabilized. The supporting rod 2 is jointed at several places on the way thereof with hinges 4 or the like whereat the rod 2 can be floded. According to this method, the width of the heat exchanger may be narrowed by folding it into two or three folds or the like and, accordingly, the folded heat exchanger may be carried into a tank through a manhole having a diameter smaller than the width of the heat exchanger.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a heat exchanger useful for installation in a shell with only a small opening, such as in a basement thermal storage.

[Prior art]

When a basement is filled with water and the water is heated, cooled and frozen to be used as a heat storage tank or cold storage tank, an extremely large heat exchanger is required to be placed indoors. In addition, it is common for underground tanks to be made with bits first and then covered with a concrete slab to make it a closed room, but if you place a heat exchanger before laying the slab, heat exchange will occur when the slab is laid. There is an extremely high risk of damaging the heat exchanger, and repair and replacement of the heat exchanger is also extremely difficult.

To do this, generally, after constructing the ceiling of the basement, materials are brought in through an opening in the ceiling, that is, a manhole, and the assembly work is performed with guidance to manufacture the heat exchanger, but the diameter of the manhole is 10 to 70 cm. Because of its small size, there are significant restrictions on the width and length of materials that can be transported. In reality, fitting pipes such as steel pipes and stainless steel pipes are brought in and assembled internally, which requires an extremely large amount of assembly man-hours and involves brazing, welding, etc. in a closed room, which worsens the working environment and is highly dangerous.

Although it is not impossible to bring a long coil of resin pipe or steel pipe into a tank and extend the pipe to make a panel of a predetermined shape, it is extremely difficult to do so in a narrow tank.

[Problem to be solved by the invention]

Install the parts in a shell that has only a small surface opening, such as a basement type heat storage or cold storage room, which has a structure that allows for easy and efficient assembly work in a closed room by allowing parts to be carried in through a small opening. It aims to provide a heat exchanger,
To avoid problems even when using a tube material with a large coefficient of thermal expansion.

[Means for solving problems]

The heat exchanger of the present invention eliminates the above-mentioned conventional drawbacks and solves the above-mentioned problems.Next, the heat exchanger of the present invention consists of seven long tubes wound in a spiral or meandering manner within a plane, and connected to several connecting support rods. The tube arrangement was fixed with This is a system in which several rows of O-flank heat exchangers are arranged and the tube ends are connected in parallel using manifold headers to form one large heat exchanger installed in an underground tank. A highly flexible resin is used, and the connecting and supporting rods are hinged at several points in the middle.
The wide channel can be folded to a width that allows it to pass through the opening of the shell, and a spring device is provided to stretch between the end of the panel and the inner wall of the shell so as to apply tension in the longitudinal direction of the channel. I can do it.

[For production]

This construction has the above-mentioned structure, so panels that cannot be brought in through a small opening when unfolded can be folded by folding the support rods at the hinge, and since the tube is also a flexible tube, it can be folded according to the folding of the support rods. Therefore, the panel is rolled up and brought in through a small opening, and inside a closed room, it is expanded, lowered to the ceiling, connected to each pipe end with a manifold, and assembled by simply connecting both ends of the panel to the inner wall and hole using a spring device. All work can be completed.

〔Example〕

The invention will now be described in detail with reference to the drawings.

As shown in the front view in Fig. 1 and in the top view in Fig. 2, the tubes 1, which are the main elements, of the tunnel type heat exchanger of the present invention are number 10 to number 1.
It is a resin tube that can be handled in a length of 00 meters and can be extended straight from the front coil or bent at a predetermined curvature as necessary.

The resin pipe l is processed into a pre-designed shape (the spiral shape in Fig. 1) in a factory of suitable size.

Each part of the tube is fixed to each other using tube fixing hardware 3 on a plurality of support rods so that the arrangement pitch, bending curvature, and bending position of the tubes are stabilized.

The support rod 2 used at this time is joined at several points along the way with hinges, etc., and one of the features of the present invention is that the support rod 2 can be bent at these positions. Since the tubes are flexible and the support rods in the width direction of the tunnels are bendable, the panel heat exchanger according to the present invention can be folded in two or three as shown in Fig. 3. You can narrow the width.

Therefore, a manhole with a small diameter smaller than the panel width (No.
, j) in the figure can also be carried into the tank 77. Further, at the upper end of the support rod, auxiliary plates ', 2 are connected to hinges 7, 7, and a hook j is attached to the end of the auxiliary plate.

The multiple panel heat exchangers carried into the basement 17 are attached to the upper ends of support rods as shown in Figures μ and J. The panels are hung on rails attached to the ceiling 44 at appropriate intervals, and the ends of the tubes of each panel are connected to the manifolds to form one heat exchanger as a whole.

FIGS. 7 and 7 show an embodiment in which a resin tube is bent in a meandering shape. The bent shape of the tube may be either a meandering shape or a spiral shape.

The coefficient of thermal expansion of resin is about 70 times that of metal. Therefore, in a heat exchanger using resin tubes, when the temperature rises, the tubes are subject to large flexures, which may cause various problems during use, such as vibration and increased water flow resistance. In this invention, the first. Spring device 6 as shown in the diagram
Tension is always applied to the panel tubes to prevent them from bending.

FIG. 1O shows an example of a metal fitting 3 to be fixed to a support rod, and the shape is not limited as long as the tube can be fixed to a flat surface.

〔Effect of the invention〕

The present invention provides a heat exchanger that can be easily assembled indoors with a small opening as described above, and has a great effect in that a heat storage tank and a cold storage tank can be constructed at low cost.

[Brief explanation of the drawing]

Figure 7 is a side view of a panel 1 heat exchanger, Figure 2 is a side view of a flat panel heat exchanger, and Figure 3 is a side view of a flat panel heat exchanger. A cross-sectional view, Figure G is a front view of a single-wall heat exchanger (installed in a basement heat storage tank), Figure J is an elongated view, and Figure Z is a view of an E-flannel heat exchanger installed from a ceiling manhole. Diagram h 'Jf=7+' shows two examples of serpentine piping, and the second diagram shows the connection between the panel heat exchanger and the tank inner wall. FIG. 10 is a view showing a metal fitting for fixing a tube to a support rod. In the figure: Resin pipe, λ... Support rod, 2r, , 2
//...Auxiliary plate, 3...Pipe fixing fitting p, 7-
Hinge, j... hook, 2... extension plate, r... spring device, ri... suspension rail, IO... rail fixture, //, 12... manifold header , /3・
...Header fixture, /II...Ceiling slab, /j...
・Opening, /G... Manhole cover, /7... Cypress, i
t...side wall.

Claims (1)

[Scope of Claims] 1. The invention is characterized in that collapsible supports are provided at intervals, and flexible resin heat exchange tubes are attached to the expanded supports in a spiral or meandering manner. Foldable heat exchanger. 2. The collapsible heat exchanger according to claim 1, wherein the heat exchange tube is attached so that its curved portion projects outward from the support.