JPS6033496A - Heat exchanger - Google Patents

Abstract

PURPOSE:To disturb airflow around pipes in first row and increase the heat conducting area of the heat exchanger also to improve the heat conducting performance of the heat exchanger by permitting heat source fluid to flow through the inside of cylindrical tubular bodies. CONSTITUTION:The cylindrical members 5, having cylindrical outer peripheral surfaces and arranged in parallel along the side rim of upstream side of plate fins 1 with intervals into directions intersecting with the flow direction of the airflow, are provided and both ends thereof are penetrated through and fixed to the end plates 3. The cylindrical tubular bodies 5 are connected to the same bodies 5 mutually and are connected to the pipes 2 so as to flow the heat source fluid through the inside of the cylindrical tubular bodies 5. The cylindrical tubular bodies 5 are arranged in zigzag with respect to the pipes 2a in the first row. When air is flowed into the direction A, the airflow is disturbed in the wake flow of the cylindrical tubular bodies 5 by the same bodies 5 and eddy currents X are generated. As a result, the airflow around the pipes 2a in the first row is disturbed and heat conducting performance around the pipes 2 is improved remarkably. Further, the cylindrical tubular bodies 5 are connected to the pipes 2 and the heat source fluid flows through the inside of them, therefore, heat exchange may be effected in the cylindrical tubular bodies 5 with air, therefore, the heat conducting area is increased resultantly, the amount of heat exchange is increased and the heat conducting performance as the heat exchanger may be improved remarkably as the whole thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger used in the field of air conditioners.

Structure of the conventional example and its problems The conventional heat exchanger, as shown in Figs. 1 to 3,
The fins 1a, 1b, and IC are arranged in parallel at regular intervals and are divided into at least two parts in the front and back, and are arranged on the same plane with respect to the flow direction of the airflow flowing in the direction of the arrow. A large number of plate-like fins 1
, a large number of pipes 2 penetrating orthogonally to these plate-like fins 1 , and an end plate 3 .

The heat source fluid flowing in the pipe 2 and the air flowing in the direction of the arrow are exchanging heat via this heat exchanger. By the way, in such a heat exchanger, as shown in Fig. 2, when air flows in the direction of the arrow, the flow is turbulent at the downstream part of the - row pipe 2N, and the air flows as shown by arrow B. A vortex is created.

As a result, this flow affects the second row of pipes 2b, disturbs the flow around the pipes 2b, and improves the heat transfer performance around the nozzles. Similarly, the vortex C generated at the downstream part of the pipe 2b
disturbs the flow around the pipe 2C and improves the heat transfer performance around the pipe. However, the flow around the pipes 2a in the first row is not provided with anything to disturb the flow on the windward side, so the heat transfer performance around the pipes is not fully utilized. That is, the conventional heat exchanger was not configured to disturb the flow around the pipe on the windward side, and therefore could not fully demonstrate its heat transfer performance as a heat exchanger.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a heat exchanger that improves heat transfer performance by disrupting the flow around the row of pipes and increasing the heat transfer area.

Structure of the Invention For this reason, the present invention provides fins that are arranged in parallel at regular intervals, are divided into at least two units in the front and back with respect to the direction of airflow, and that adjacent fins in the front and back direction are not arranged on the same plane. a large number of plate-like fins, a large number of pipes passing orthogonally through these plate-like fins, and spaced apart spaces on the windward side of the pipes parallel to the pipes and in a direction perpendicular to the flow direction of the wind. , a large number of arranged cylindrical tubes, the cylindrical tubes disturb the flow around the first row of pipes, the cylindrical tubes and the pipes are connected, and the cylindrical tubes The present invention also provides a heat exchanger that allows heat exchange to occur through a heat source fluid.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 to 6. 1 is a plate-shaped fin, 2 is a pipe, 3 is an end plate, and 4 is a fin collar.

Reference numeral 5 denotes cylindrical tube bodies having a cylindrical outer circumferential surface, which are arranged in parallel at intervals along the windward side edge of the plate-like fin 1 in a direction intersecting the wind flow direction, and whose outer circumferential surface is cylindrical. The portion extends through the end plate 3 and is fixed thereto. The cylindrical tubes 5 and the cylindrical tube 6 are connected to the pipe 2 so that the heat source fluid also flows inside the cylindrical tube 6.

Further, each cylindrical tube body 5 is arranged in a staggered manner with respect to the first row of pipes 2a. In the above configuration, when air flows in the direction indicated by the arrow, the flow is disturbed in the downstream part of the cylindrical tube 5, and a vortex flow as shown by the arrow X is generated. As a result, the flow around the vibrator 2a in the row is disturbed, and the heat transfer performance around the circumference of the pipe 2 is greatly improved. Moreover, since the cylindrical tube 5 is connected to the pipe 2 and the heat source fluid flows inside it, heat exchange with the air can also be performed in the cylindrical tube 6, resulting in an increase in the heat transfer area and the heat source. The amount of exchange increases, and the overall heat transfer performance of the heat exchanger is dramatically improved.

Effects of the Invention As is clear from the above embodiments, according to the heat exchanger of the present invention, the flow around the pipe located furthest upwind is disturbed by the cylindrical tube body disposed on the windward side of the plate-like fins. can increase the heat transfer around the pipe, greatly improving the heat transfer performance of the heat exchanger, and at the same time, since the heat source fluid flows inside the cylindrical tube, the cylindrical tube itself also loses heat. It acts as an exchanger, further improving the heat transfer performance of the heat exchanger as a whole.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional heat exchanger, Fig. 2 is a vertical sectional view of the same heat exchanger, Fig. 3 is a sectional view taken along line I-I in Fig. 2, and Fig. 4 is an embodiment of the present invention. FIG. 5 is a longitudinal sectional view of the heat exchanger, and FIG. 6 is a sectional view taken along the line v+--■ in FIG. 6. 1...Plate fin, 2...Pipe, 2
a... - row pipe, 3... end plate, 5... cylindrical tube body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5 with Figure 6

Claims (2)

[Claims] (1) A large number of plate-shaped fins arranged in parallel at regular intervals, divided into at least two parts in the front and back in the direction of airflow, and in which adjacent fins in the front and rear directions are not arranged on the same plane. fins, a large number of pipes passing through these plate-like fins, and a large number of cylindrical tube bodies arranged on the windward side of the plate-like fins in parallel with the pipes and spaced apart in a direction intersecting the flow direction of the wind. A heat exchanger comprising: the cylindrical tube body and the pipe connected to each other. (2) The heat exchanger according to claim 1, wherein the cylindrical tube bodies are arranged in a staggered manner with respect to adjacent pipes.