JPS5995391A - Heat exchanger - Google Patents

Abstract

PURPOSE:To disturb a flow around a pipe located at the most upstream side of the air flow to increase the heat transmission of the pipe and improve the heat transfer capacity of the heat exchanger remarkably by arranging a cylindrical member at the most upstream side of the air flow. CONSTITUTION:The cylindrical members 5 are arranged along the side rim at the most upstream side of plate fins 1 with given spaces in the direction orthogonal to the direction of the flow of air while both ends thereof are fixed to end plates after penetrating them. These cylindrical members 5 are arranged in zigzag with respect to the pipes 2a of first row. When the air is flowed into arrow sign direction A, the flows are disturbed in the downstream of the cylindrical members 5 and eddy currents, shown by the signs B, are generated. As a result, the flows around the pipes 2a of the first row are disturbed and the heat transfer capacities around the pipes are increased, thereby improving the heat transfer capacity of the heat exchanger remarkably.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a heat exchanger used in an air conditioner or the like.

Structure of the conventional example and its problems As shown in Figs. 1) Many pipes passing vertically through ■
It is composed of. G) is an end plate that fixedly supports both ends of the pipe (4), and (4) is a fin collar. And the heat source fluid flowing inside the pipe ■ and the arrow (A)
The air flowing in this direction exchanges heat with the air through this heat exchanger. By the way, in such a heat exchanger, as shown in Fig. 2, when air flows in the direction of arrow I] (A), the flow is caused by the flow at the downstream part of the - row pipe (2a). The turbulence causes a vortex flow as shown by the arrow (B). As a result, this flow affects the second column 7 (Eve (2b)) and the pipe (2
b) Disturb the flow around the pipe to improve heat transfer performance around the pipe. However, the flow around the - row pipe (2a) is
Because nothing was installed on the windward side to disturb the flow, the heat transfer performance around the pipes was not fully utilized.

That is, the conventional heat exchanger did not have a structure that would disturb the flow around the pipe on the windward side, so it was unable to fully demonstrate its heat transfer performance as a heat exchanger.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a plate-based heat exchanger that improves heat transfer performance by disrupting the flow around the pipes in the - row and does not result in a significant increase in cost. With the goal.

Structure of the Invention For this reason, the present invention includes a large number of plate-like fins arranged in parallel at regular intervals, a large number of pipes that pass through these plate-like fins, an end plate that fixedly supports both ends of these pipes, and Mr. A large number of cylindrical members are arranged on the windward side of the plate-like fins parallel to the pipes and at intervals in a direction crossing the flow direction of the wind. To provide a heat exchanger in which the flow is disturbed and the cylindrical member of the bracket is fixed by passing through the end plate, thereby requiring almost no cost for mounting and fixing the bracket.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be explained below with reference to FIGS. 4 to 6. (1) is a plate-shaped fin, (3) is a pipe, (3) is an end play), 14) #-t fin It is in color.

6) is fixed along the windward side edge of the plate-shaped fin (1), passing through the wind flow end plate (3).

This cylindrical member (5) is the -th row pipe (2a
) are arranged in a staggered manner.

In the above configuration, when air flows in the direction of the arrow (A), the cylindrical member (5) causes the air to flow in the downstream part, causing turbulence.
A vortex as shown by arrow (B) is generated. As a result, the flow around the row of pipes (2a) is disturbed, the heat transfer performance around the pipes is enhanced, and the heat transfer performance as a heat exchanger is greatly improved. Furthermore, since the cylindrical member (5) is fixed by using a part of the conventionally provided end plate (3) and passing through this, there is almost no cost for installing and fixing the cylindrical member (5). .

Effects of the Invention According to the heat exchanger of the present invention, as is clear from the above description, the cylindrical member disposed on the windward side of the plate-like fin disturbs the flow around the pipe located on the windward side. It is possible to increase the heat transfer around the pipe, and the heat transfer performance of the heat exchanger can be greatly improved. Since it is fixed, it has the advantage of requiring almost no cost for installation and fixing.

[Brief explanation of drawings]

Figures 1 to 3 show a conventional heat exchanger, with Figure 1 being a perspective view, Figure 2 being a vertical sectional view, Figure 3 being a view taken along the ■-■ arrow in Figure 2, and Figures 4 to 3. FIG. 6 shows an embodiment of the heat exchanger according to the present invention, FIG. 4 is a perspective view, FIG. 5 is a longitudinal cross-sectional view, and FIG. 6 is a view taken along arrows -■ in FIG. 5. (1) is a plate-shaped fin, c2Jr: x pipe, c3) is an end plate, and 6) is a cylindrical member. Figure 1 Figure 2 Figure 4 Spear 5! Pickled b 4 7

Claims (1)

[Claims] (1) A large number of plate-shaped fins arranged in parallel at regular intervals, a large number of pipes passing through these plate-shaped fins, an end plate that fixedly supports both ends of these pipes, and an i upper side of the plate-shaped fins. A heat exchanger comprising a large number of cylindrical members arranged at intervals in a direction parallel to the pipe and intersecting the flow direction of the wind, the cylindrical members being fixed by passing through the end plate. (2) The heat exchanger according to claim 1, wherein the cylindrical members are arranged in a staggered manner with respect to the pipes that are in instant contact with the pipes.