JP3015325U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the performance of the heat exchanger, reduce its weight and size, and reduce costs. [Structure] It is composed of a plurality of pipes 11 arranged at the intersections of the grids and through which the refrigerant passes, and a plurality of fins 12 spaced at a predetermined interval so that the pipes 11 penetrate in a substantially vertical direction. Fin 12
Has a corrugated cross-sectional shape parallel to the direction A through which the cooling air passes, and the direction A through which the cooling air passes is between the pipes 11 arranged in a direction perpendicular to the direction A through which the cooling air passes. A plurality of louvers 13 having slits at right angles is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger with improved heat exchange efficiency.

[0002]

[Prior art]

 FIG. 3 shows a heat exchanger installed in a generator, a large motor, etc., 1 is a heat exchange section, and 2 is a fan. A cooling medium such as water is introduced from the inlet 3 provided in the pipe drawing portion, passes through the heat exchange portion 1 having the fins 5, and exits from the outlet 4. The fins 5 are forcedly cooled by the cooling air flowing by the fan 2.

In the conventional heat exchanger, as shown in FIG. 4 and FIG. 5 (X-X cross section of FIG. 4), the pipes 6 for passing the refrigerant arranged at the intersections of the lattice penetrate the corrugated fins 7. The cooling air flows in the direction of arrow A.

In the conventional example configured as described above, since the pipe 6 is located at the intersection of the lattices, the ventilation resistance is small. On the other hand, the corrugated fins 7 cause wind turbulence to improve the heat transfer coefficient. .

Further, FIGS. 6 and 7 (Y-Y cross section in FIG. 6) show a second conventional example, and a louver 9 is provided on the fin 8 in order to further increase the turbulence. . In this case, the fins 9 are generally provided with louvers 9 on flat fins, and the pipes 6 are generally arranged in staggered positions.

[0006]

[Problems to be solved by the device]

 However, in the case of the conventional example shown in FIGS. 4 and 5, the performance is limited. Further, in the case of the conventional example of FIGS. 6 and 7, the performance is good, but the ventilation resistance is high. Therefore, there is a problem that the fan becomes large and the device becomes inevitably large.

The present invention solves the above-mentioned problems of the prior art by improving heat exchange efficiency, thereby realizing weight reduction and compactness, and achieving a significant cost reduction. The purpose is to provide a exchanger.

[0008]

[Means for Solving the Problems]

 To achieve this object, the heat exchanger of the present invention has a plurality of pipes for passing the refrigerant arranged at the intersections of the grids and a predetermined interval so that the pipes pass through in a substantially vertical direction. A plurality of fins that are arranged so as to be empty and have a corrugated cross-sectional shape parallel to the direction in which cooling air passes, and a plurality of fins , A plurality of louvers having slits in a direction perpendicular to the direction in which the cooling air passes.

[0009]

[Action]

 According to the above configuration, by providing the louvers on the corrugated fins, the turbulence of the wind is increased to improve the heat transfer coefficient, and furthermore, the ventilation resistance is reduced by arranging the tubes at the intersections of the grids. You can

[0010]

【Example】

 Hereinafter, embodiments will be described in detail with reference to the drawings. 1 and 2 (Z-Z cross section of FIG. 1) show an embodiment of the present invention, in which 11 is a plurality of tubes through which refrigerants are arranged so as to be located at intersections of lattices, and 12 is The plurality of tubes 11 are arranged at a predetermined interval so as to penetrate in a substantially vertical direction, and the plurality of fins 13 having a wavy cross-section parallel to the direction A through which the cooling air flows are The fins 12 are a plurality of louvers that are provided between the pipes 11 arranged in a direction perpendicular to the direction A through which the cooling air passes and that have slits in a direction perpendicular to the direction A through which the cooling air passes.

In the above-mentioned configuration, the refrigerant introduced from the inlet provided in the pipe header flows into the pipe 11 toward the outlet provided in the pipe header. Meanwhile, the heat of the refrigerant is conducted from the tube wall to the fins 12 and is dissipated by the wind flowing between the fins 12.

In this embodiment having such a configuration, since the louver 13 is provided on the corrugated fin 12 as the fin, a large turbulent flow of the wind can be caused, and the heat transfer coefficient becomes extremely high. Further, since the pipes 11 are arranged at the intersections of the lattices, the ventilation resistance is low, so that it is not necessary to use a large fan, and it is possible to realize a small size and a compact size.

[0013]

[Effect of device]

 As described above, according to the present invention, it is possible to improve heat exchange efficiency, realize weight saving and compactness, and thus contribute to cost reduction as a whole.

[Brief description of drawings]

FIG. 1 is a sectional view parallel to a fin according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line ZZ of FIG.

FIG. 3 is an external view showing an example of a heat exchanger.

FIG. 4 is a cross-sectional view parallel to the fin of the first conventional example.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is a sectional view parallel to the fin of the second conventional example.

7 is a cross-sectional view taken along line YY of FIG.

[Explanation of symbols]

 11… Tubes, 12… Fins, 13… Louvers.

Claims (1)

[Scope of utility model registration request] 1. A plurality of pipes for passing a refrigerant arranged at intersections of a grid and a plurality of pipes arranged at a predetermined interval so as to penetrate in a substantially vertical direction, and are parallel to a direction in which cooling air flows. A plurality of fins each having a corrugated cross-sectional shape and a slit provided in a direction perpendicular to the direction in which the cooling air flows, provided between the tubes arranged in a direction perpendicular to the direction in which the cooling air flows in the plurality of fins. And a plurality of louvers having a heat exchanger.