JPH0579268U - Heat exchanger - Google Patents

Abstract

(57) [Summary] [Object] To provide a heat exchanger having excellent heat exchange performance and capable of producing a product of any size by appropriately combining shape members having the same cross section. [Structure] A plurality of aluminum hollow extruded shape members 2 arranged in parallel are bent into a substantially square annular shape. The starting end portion 9 and the terminating end portion 10 of each extruded shape member 2 are brought to one place and protrude outward, and the starting end portion 9 is provided with an inlet header 3 and the terminating portion 10 is provided with an outlet header 4. . An inner plate 1 made of aluminum is fixed to the inner peripheral surface of the extruded shape member 2 in the innermost row.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger, and more particularly, to a heat exchanger that is used by being alternately laminated with a sheet-shaped heat generating element or heat absorbing element.

In this specification, aluminum is meant to include pure aluminum and aluminum alloy.

[0003]

[Prior Art]

 Conventionally, as this type of heat exchanger, one in which a fluid passage is formed by stacking and welding two press-formed stainless steel thin plates is known.

[0004]

[Problems to be solved by the device]

 Since the above conventional heat exchanger is made of stainless steel, its heat exchange performance is not sufficient, and when manufacturing products of different sizes, a mold corresponding to that is required, and heat exchange of any size is required. It was difficult to manufacture a container.

Further, a pressure-preventing material is printed in a required shape on one surface of one of the pair of upper and lower aluminum plates, and the other aluminum plate is pressure-bonded to this surface, and then the fluid pressure is not pressure-bonded. It is conceivable to use a roll-bonding material formed by being introduced into a part and bulging it into a tubular shape, but it is not possible to obtain a product having a predetermined size due to the limitation of equipment.

An object of the present invention is to provide a heat exchanger having excellent heat exchange performance and capable of manufacturing an arbitrary size by appropriately combining extruded profiles having the same cross section. ..

[0007]

[Means for Solving the Problems]

 In the heat exchanger according to the present invention, a plurality of aluminum hollow extruded shape members arranged in parallel are bent into a substantially rectangular ring shape, and the starting end portion and the terminating end portion of each extruded shape member are located at one location. The inlet header is provided at the start end and the outlet header is provided at the end, and the aluminum intermediate plate is fixed to the inner peripheral surface of the extruded profile in the innermost row. Is what

[0008]

[Action]

 The heat exchanger according to the present invention uses aluminum, which has a high thermal conductivity, and therefore has excellent heat exchange performance. When manufacturing different sizes, extruded profiles having the same cross section are appropriately combined and manufactured.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in the heat exchanger, five aluminum (A6063) hollow extruded shape members (2) arranged in parallel are bent in a substantially rectangular ring shape, and each extruded shape is extruded. The starting end (9) and the end (10) of the profile (2) are brought together in one place and are projected outward, and the start end (9) has the inlet header (3) and the end (10). An outlet header (4) is provided, and an inner aluminum plate (1) is fixed to the inner peripheral surface of the extruded profile (2) in the innermost row.

Each extruded profile (2) is bent so that the terminal end (10) is parallel to the starting end (9) and the bending radius becomes smaller toward the inside. As a result, there is no gap in the bent part. Aluminum corner plates (5) are applied to the outer sides of the bent portions of the extruded profile (2) in the outermost row, respectively.

In this embodiment, the approximate dimensions of the portion excluding the header portion are 1600 × 3800 mm.

As shown in FIG. 2 and FIG. 3, each extruded profile (2) is a rectangle having a width of 45 mm and a height of 3.5 mm, and is divided in the middle to have two fluid passages. is doing. Welding ridges (6) and (7) with a width of 5 mm and a width of 10 mm are provided on both edges of each extruded profile (2). 2) and the middle plate (1) and the extruded profile (2) and the corner plate (5) are fixed by spot welding (8).

The thickness of each of the middle plate (1) and the corner plate (5) is 1 mm.

It should be noted that the manufacturing cost can be reduced by making the radii of the bent portions the same by using a single bending die. In this case, a flat plate may be embedded in the gap formed between the adjacent extruded shape members (2) and fixed by welding.

In the above embodiment, the fluid passage is formed by the five extruded profile members (2), but the number of extruded profile members can be changed as necessary. Further, the shape and size of the extruded profile can be appropriately changed.

This heat exchanger is used, for example, as a cooling panel for a large closed underground transformer. In this case, the heat exchanger is bent into a cylindrical shape and laminated with a sheet winding that serves as a heating element, and CFCs are used as the refrigerant.

[0018]

[Effect of the device]

 According to the heat exchanger of the present invention, since it is made of aluminum, which has a high thermal conductivity, the heat exchange performance can be greatly improved as compared with that of stainless steel. Moreover, a heat exchanger of any size can be manufactured by appropriately combining the extruded shape members having the same cross section.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a heat exchanger according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a cross-sectional view taken along the line III-III of FIG.

[Explanation of symbols]

 (1) Middle aluminum plate (2) Aluminum hollow extrusion (3) Inlet header (4) Outlet header (9) Start end (10) End

Claims (1)

[Scope of utility model registration request] 1. A plurality of aluminum hollow extruded shapes (2) arranged in parallel are bent in a substantially rectangular ring shape, and the starting end (9) and the end of each extruded shape (2). Each of the (10) is brought to one place and projected outward, and the inlet header (3) is provided at the start end (9) and the outlet header (4) is provided at the end end (10). A heat exchanger in which an aluminum middle plate (1) is fixed to the inner peripheral surface of the extruded profile (2).