JPS60162134A - Heat exchanger for air conditioner etc. - Google Patents

Abstract

PURPOSE:To equalize the heat exchanging efficiency regardless of the airflow direction by providing raised arc-shaped pieces in a plate fin. CONSTITUTION:When performing the heat exchange by drafting the air in the direction shown by an arrow A, for instance, the air is received by raised rectangular pieces 17 and raised arc-shaped pieces 20 to cause the air disturbance as the air moves from communicating holes 17a, 20a to a plate fin 15. When drafting the air in the direction of arrow B, the air is received by raised pieces 19 and raised pieces 21. In this manner, the heat exchanging efficiency is not lowered no matter in which direction the airflow may come. For instance, when the unit is installed on veranda of a condominium or in narrow alleys, a suitable choice for blowing condition can be made.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger for an outdoor unit or the like in a separate air conditioner.

Conventional Structure and Problems The conventional outdoor unit of a separate air conditioner is as shown in FIG. 1 is the main body of the outdoor unit, 2 is a suction port, 3 is a blowout port, and 4 is a heat exchanger, which is composed of a plurality of plate fins 5 stacked at intervals and a refrigerant pipe 6. Then, on this plate fin 5, a cut and raised piece 7 is placed.
The cutting and bending piece 7 is provided between the refrigerant pipes 6 and is shaped like a louver.
They are oriented as indicated by the large arrows A to B, and A' in FIG. 2, to create turbulent flow between the laminated plate fins 5. 8 is a motor, which is held by motor holding legs 9. 10 is a fan.

In this way, conventionally, a fan 10 is provided on the side of the suction port 2 and a heat exchanger 4 is provided on the side of the outlet 3 to ventilate from the direction of the large arrow A to B.
When ventilating the plate fins 5, the cut and raised pieces 7 cause air to move between the stacked plate fins 5, creating a turbulent flow and increasing heat exchange efficiency. On the other hand, the motor 8 and holding leg 9 of the blower are reversed as shown by the dotted lines, so that the inlet 2 becomes the outlet and the outlet 3 becomes the inlet. ,
L: 5, ventilation is provided in the H direction, and either the inlet or outlet can be used, so that there are no restrictions on the installation conditions. However, the cut and raised piece 7 provided on the plate fin edge causes turbulence when the flow flows from the direction of the large arrow A to the direction of B, but on the contrary, it is used by changing the direction from the direction of the small arrow G to the direction of H. In this case, plate fins laminated with air 6
This has the disadvantage that heat exchange efficiency is reduced because there is little transfer between the two.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional art.
The purpose is to prevent the heat exchange efficiency from decreasing no matter which direction the air outlet is changed.

Structure of the Invention The present invention provides a plate fin with rectangular cuts cut and raised between the through holes through which the refrigerant pipes of the plate fin are inserted, separated from the vertical center perpendicular to the ventilation direction, so as to receive ventilation in the left and right direction. It has a raised piece and an arcuate cut-and-raised piece that is cut and bent at both sides of the through-hole through which the refrigerant pipe is inserted, separated from the vertical center perpendicular to the ventilation direction, so as to receive ventilation in the left-right direction. However, the heat exchange efficiency is made to be the same regardless of whether the ventilation direction is left or right.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 3 and 4. Reference numeral 15 indicates plate fins of a heat exchanger (corresponding to FIG. 1), and a large number of plate fins are stacked at parallel intervals. 16 is a through hole through which a refrigerant pipe (corresponding to FIG. 1 6) is inserted; 17 is a rectangular cut-and-raised piece cut and raised in the flat part 18 of the plate fin 15, and is provided between the through-holes 16; Divided from the vertical center perpendicular to the direction of arrows A and B, which are the ventilation directions,
Ventilation is received from the direction of arrow A, and is then directed to the next stacked plate fin through the communication hole 17a. 19
is a rectangular cut-and-raised piece that is cut and raised in the opposite direction to the cut-and-raised piece 17 and formed in a symmetrical position apart from the vertical center, and this cut-and-raised piece 19 is cut and raised in the direction of arrow B. The ventilation from the plate fins is passed through the communication holes 19a to the next stacked plate fin.

Reference numeral 20 denotes an arc-shaped cut-and-raised piece provided on the side of the through-hole 16 in the same line as the cut-and-raised piece 17, and has a vertical center 6.

It is separated and receives ventilation from the direction of arrow A, and the communication hole 20
Ventilation is carried out from a to the next plate fin.

Reference numeral 21 denotes an arc-shaped cut-and-raised piece that is cut and raised in the opposite direction to the cut-and-raised piece 2o and formed in symmetrical positions separated from the vertical center. The ventilation from the plate fins is passed through the communication hole 21a to the next stacked plate fin.

2, the heat exchanger for the outdoor unit shown in FIG. 1 is constructed by inserting refrigerant pipes orthogonally through the plate fins 160 through-holes 16 and stacking the plate fins 15. For example, when heat is exchanged by ventilation from the direction indicated by the large arrow, the ventilation is received by the rectangular cut-and-raised piece 17 and the circular arc-shaped cut-and-raised piece 2 degrees, and the respective communication holes 17a,
The flow moves from 20a to the next plate fin, causing turbulence.

Next, when ventilation is directed from the direction of arrow B, it is received by the rectangular cut-and-raised piece 19 and the arc-shaped cut-and-raised piece 21, and the turbulent flow is transferred to the next plate fin through the respective communication holes 19a and 21a. This is done so that the heat exchange efficiency does not deteriorate even slightly from either direction.

Effects of the Invention As described above, the present invention has rectangular cut and raised pieces cut and raised on the plane part of the plate fin, separated from the vertical center perpendicular to the ventilation direction, so as to receive ventilation from the left and right sides. and arc-shaped cut and raised pieces located on both sides of the refrigerant pipe,
It is designed so that the heat exchange efficiency will not decrease even if the air is ventilated from either the left or right direction, so when using the blower of an outdoor unit such as an air conditioner by changing the blowing direction, which direction should the blower be used? The use of the blowing direction does not significantly reduce the heat exchange efficiency. In addition, when the equipment is installed in a place where the installation conditions are very difficult, such as a balcony of an apartment or a narrow alley, it is possible to select appropriate blowing conditions.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional example and an outdoor unit for explaining the present invention, Fig. 2 is a partial perspective view of plate fins of a conventional heat exchanger, and Fig. 3 is a plate of a heat exchanger according to the present invention. A front view of the fin, and FIG. 4 is a partial perspective view of the same plate fin. 16... Plate fin, 16... Through hole, 17. 19... Rectangular cut and raised piece, 20.
21... Arc-shaped cut and raised piece.

Claims (1)

[Claims] A large number of plate fins are stacked in parallel at intervals,
A refrigerant pipe is inserted perpendicularly to the plate fin, and between the through holes through which the refrigerant pipe of the plate fin is inserted, the plate fins are cut out to receive ventilation from the left and right, separated from the vertical center perpendicular to the ventilation direction. A heat exchanger for an air conditioner, etc., which has a rectangular cut-and-raised piece and, like the cut-and-raised piece, arc-shaped cut-and-raised pieces on both sides of a through hole.