JPH0590174U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] In a heat exchanger in which a plurality of heat exchange tubes and heat exchange fins are arranged between the heat exchange tubes, damage to the heat exchange tubes from falling objects or flying objects is prevented. [Structure] The width of the heat exchange tube is formed to be smaller than the width of the heat exchange fin so that the heat exchange fin protrudes from the heat exchange tube at the windward side where falling or flying objects come. Assemble. [Effect] The fins for windward heat exchange protruding from the heat exchange tube act as a cushioning material for preventing a falling object or a flying object from directly colliding with the heat exchange tube, thereby preventing damage to the heat exchange tube.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger, and more specifically, as shown in FIG. 1, a pair of header pipes 1 and 1 facing each other at intervals and a plurality of heat exchange pipes 2 connecting the header pipes. , 2 ... and heat exchange fins 3, 3 arranged between these heat exchange tubes, and a heat exchange tube 2 formed in a meandering shape as shown in FIG. The present invention relates to an improvement of a heat exchanger composed of the heat exchange fins 3, 3 ... Arranged between the meandering heat exchange tubes.

[0002]

[Prior Art]

 As shown in FIG. 5, the joint between the heat exchange tube and the heat exchange fin of the conventional heat exchanger has the same width W of the heat exchange tube 2 and the same width w of the heat exchange fin 3 as shown in FIG. Or at least one of both ends 9, 9'of the heat exchange tube 2 (preferably the side on which wind comes during use (hereinafter referred to as "upwind side", see arrow)). It was known that the heat exchange tube had a wall thickness of 10 as compared with other portions.

However, in the conventional heat exchanger of this type, both ends of the heat exchange pipe are dropped by a tool such as a tool in the production line of the heat exchanger, or pebbles or the like fly in during use of the heat exchanger. There was a great deal of concern that the end of the heat exchange tube would be damaged due to a collision of objects, and the heat exchange medium (for example, refrigerant) inside the heat exchange tube would leak, and at least one end of the heat exchange tube. A part (windward side) that is thicker than other parts of the heat exchange tube has resistance to damage, but the heat exchange efficiency is low, and the weight of the material is increased, resulting in high cost. There was a problem.

The present invention has been made in view of the above circumstances, and it is possible to easily protect a heat exchange tube even when a falling object or a flying object is hit without thickening at least one end portion of the heat exchange tube. It aims to provide a possible heat exchanger.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the heat exchanger of the present invention is configured such that the width of the heat exchange tube is smaller (shorter) than the width of the heat exchange fin, and the heat exchange tube and the heat exchange fin are assembled. At the time of attachment, at least one end surface (preferably windward side) of both end surfaces of the heat exchange pipe is located inside the end surface of the heat exchange fin.

[0006]

[Action]

 With the above configuration, the ends of the heat exchange tubes are located more inside than the ends of the heat exchange fins, so that fallen objects during production or flying objects during the use of the heat exchanger may be prevented. In such a case, the heat exchange fins serve as a cushioning material in the case of collision of the falling object or flying object, preventing the falling object or flying object from directly colliding with the end of the heat exchange tube, and It is designed to protect from damage.

[0007]

【Example】

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

1 and 2 are schematic front views of a heat exchanger to which the configuration of the present invention is applied, and FIG. 3 is a first embodiment of the present invention, and is a sectional view taken along line AA of FIGS. 1 and 2. It is shown in an enlarged cross-sectional view of the main part of FIG. FIG. 4 shows a second embodiment of the present invention, which is similar to FIG. The heat exchanger according to the first embodiment of the present invention comprises a plurality of heat exchange tubes 2, 2, ... And a plurality of heat exchange fins 3, 3 ,. , (See FIG. 3), and the width of the heat exchange tubes 2, 2 ... Is smaller than the width of the heat exchange fins 3, 3 ,. The heat exchange tubes 2, 2 ... and the heat exchange fins 3, 3 ... are brazed so that the end surfaces of the heat exchange tubes 2, 2 ... They are joined together.

FIG. 4 shows a second embodiment of the present invention. Like the first embodiment, a plurality of heat exchange tubes 2, 2, ..., A plurality of heat exchange fins 3, 3 ,. The fins 3 ', 3' ... form a main part of the fins, and the fins for heat exchange are configured so that the width of the heat exchanging fins 3, 3 ,. , And the ends of the fins Y, Y of the portion configured so that the widths of the heat exchange tubes 2, 2 ... and the widths of the heat exchange fins 3 ', 3' ... The heat exchange tubes 2 and 2, the heat exchange fins 3 and 3, and the heat exchange fins 3'and 3 '... are integrally joined by brazing or the like so that at least and are alternately arranged. Is.

In each figure, 1 is a header pipe, and 4 is a connecting portion with other equipment. Further, the invention is not limited to the contents shown in FIGS. 1 to 4, but the configuration can be arbitrarily changed within the scope of the gist of the invention.

[0011]

[Effect of the device]

 As described above, since the heat exchanger of the present invention is configured as described above, the following effects can be obtained.

Since the width of the heat exchange tubes is made smaller than the width of the heat exchange fins, a) the heat exchange fins serve as a cushioning material for falling objects and flying objects, protect the heat exchange tubes from damage, and improve reliability. A high heat exchanger can be provided. B) With the above effects, the wall thickness of the heat exchange tube can be made uniform over the entire circumference thereof, and the thermal efficiency can be improved. C) Since the width of the fins for heat exchange is large, the heat transfer area on the air side can be increased, and the thermal efficiency can be improved accordingly. It is possible to provide an excellent heat exchanger such as

[Brief description of drawings]

FIG. 1 is a schematic overall view of a first heat exchanger to which the configuration of the present invention is applied.

FIG. 2 is a schematic overall view of a second heat exchanger to which the configuration of the present invention is applied.

FIG. 3 shows a first embodiment of the present invention, A- in FIG. 1 and FIG.
The principal part expanded sectional view of the A line cross section.

FIG. 4 shows a second embodiment of the present invention, which is taken along the line A- in FIGS.
The principal part expanded sectional view of the A line cross section.

[FIG. 5]

FIG. 6 is an enlarged sectional view of an essential part of a portion corresponding to a section taken along the line AA in FIGS. 1 and 2 showing a conventional example related to the present invention.

[Explanation of symbols]

 1 Header Pipe 2 Heat Exchange Tube 3 Heat Exchange Fin 3'Heat Exchange Fin 4 Connection

Claims (2)

[Scope of utility model registration request] 1. In a heat exchanger mainly composed of a plurality of flat heat exchange tubes and heat exchange fins provided between the heat exchange tubes, the width of the heat exchange tubes is smaller than the width of the heat exchange fins. A heat exchanger characterized by being configured to be small. 2. In a heat exchanger mainly composed of a plurality of flat heat exchange tubes and heat exchange fins provided between the heat exchange tubes, the width of the heat exchange tubes is larger than the width of the heat exchange fins. A heat exchanger characterized in that a small portion and a portion where the width of a heat exchange tube is equal to the width of a heat exchange fin are selectively arranged.