JPH08178329A - Heat exchanger - Google Patents

Abstract

PURPOSE: To provide a heat exchanger which can be easily bent into a substantially dogleg-shape and does not reduce a heat exchanging efficiency. CONSTITUTION: There are provided many flat plate-like fins 3a arranged in parallel in a specified clearance and having an air stream flowed between them; side plates 3c arranged at both sides of these flat plate-like fins 3a; and a heat transfer pipe crossed at a right angle with the fins 3a and the side plates 3c so as to be communicated in a zig-zag grid-like manner and having both ends connected by a plurality of U-shaped pipes 3b to cause fluid to be flowed therein. One side of the side plate 3c is formed with a recessed slit 3d, the other side of it is formed with a connecting part 3e, a substantially central part of the connecting part 3e is formed with a substantially pyramid-shaped metering part 3f with the other side being applied as an apex while being projected outwardly and at the same time the other side of the fins 3a is formed with a substantial triangular recess corresponding to the position of the metering part 3f and then the side plates 3a and the fins 3a are bent and formed into the substantially dogleg-shape around a bending center A with the metering part 3f.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used in an indoor unit of an air conditioner, and more specifically, to fins forming the heat exchanger and provided on both sides of the fin. The present invention relates to a means for bending and forming a side plate into a substantially V shape.

[0002]

2. Description of the Related Art A heat exchanger used in a conventional air conditioner indoor unit or the like is, for example, as shown in FIGS.
A large number of flat plate-shaped fins 3a in which airflows flow in parallel at regular intervals, side plates 3c provided on both sides of these flat plate-shaped fins 3a, and the fins 3a and the side plates 3c are orthogonal to each other. Connected in a zigzag pattern, and multiple U-shaped tubes at both ends
It consists of a heat transfer tube that connects with 3b and the fluid flows inside.
While providing the side plate 3c with a notch 3d having one side open,
The cut portion is formed on the flange continuously provided on the other side of the same side plate 3c.
A bent portion 3f having a substantially V shape is formed corresponding to 3d, and the bent portion 3f is formed.
The fin 3a and the side plate 3c are bent in a substantially V shape around the bending center A which is the apex of the above. With the above-described configuration, as shown in FIG. 4, the heat exchanger 3 is bent, so that the heat exchanger 3 can be miniaturized and installed in the indoor unit body 1 of the air conditioner. At the same time, the heat exchange efficiency of the heat exchanger 3 can be improved, and the air sucked from the suction port 2 by the blower fan 4 provided in the air passage connecting the suction port 2 and the blowout port 5 is described above. The heat exchanger 3 exchanges heat, and the left and right wind direction plates 6 provided behind the air outlet 5 and the up and down wind direction plates 7 provided in front of the same.
The wind direction was adjusted by and to blow the air indoors. However, the fin 3a and the side plate 3c are centered around the bending center A.
Since the bending center A cannot be provided at a position beyond the drawing limit of the material of the same side plate 3c when the and is formed by bending, the same bending center A is provided near one side of the same side plate 3c. The structure is formed by bending, and there is a problem in that the portion where the air flow does not pass through the fin 3a on the other side of the bending portion becomes large and the heat exchange rate decreases.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat exchanger which can be easily bent and which does not reduce the heat exchange rate.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and includes a large number of plate-like fins arranged in parallel at regular intervals and through which an air flow flows, and these fins. Side plates provided on both sides of the flat plate-shaped fin, and the fins and the side plates are communicated in a zigzag pattern orthogonal to each other,
It is composed of a heat transfer tube whose both ends are connected by a plurality of U-shaped tubes and through which a fluid flows, a concave cut portion is formed on one side of the side plate, and a connecting portion is formed on the other side. A substantially triangular pyramid-shaped narrowed portion with the other side as the apex is formed in the substantially central portion of the portion, and a notch corresponding to the position of the narrowed portion is formed on the other side of the fin, and the narrowed portion is used to It is characterized in that the side plate and the fin are bent and formed in a substantially V shape. Also,
It is characterized in that the upper side of the connecting portion is formed at a substantially central position of both side ends of the side plate. Further, the narrowed portion is formed so as to project to the outside of the side plate. Furthermore, the notch is formed in a substantially triangular shape.

[0005]

According to the above structure, since the bent portions can be easily bent around the substantially central positions of both ends of the side plate, the breathability of the bent portions is not easily impaired, and the heat exchange rate can be prevented from lowering. It becomes an exchange.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the heat exchanger according to the present invention used in an indoor unit of an air conditioner will be described below with reference to the accompanying drawings. Figure 1, Figure 2, Figure 3 (A) (B)
In the figure, 1 is the indoor unit body of the air conditioner, and 2 is the body 1
A suction port provided on a front cover detachably attached to the front body and an upper surface portion of the main body 1, and a heat exchanger 3 for exchanging heat with air sucked from the suction port 2 provided in the main body 1. Is. 3a is a plate-like fin arranged in parallel as a constituent member of the heat exchanger 3 at regular intervals, and 3b is a fin 3a and both ends of a heat transfer tube which communicates in a zigzag pattern orthogonal to the side plate described later are connected. A plurality of U-shaped pipes, 3c are side plates provided with both ends of the fin 3a, 3d is a concave cut portion formed by releasing one side of the side plate 3c, and the lower end of the cut portion 3d is the above-mentioned Side plate 3c
It is configured to be formed at substantially central positions on both side ends of the. 3e
Is a connecting portion that connects the other side of the side plate 3c, and the connecting portion 3e is formed to be continuous with the cut portion 3d.
Reference numeral 3f denotes a substantially triangular pyramid-shaped throttle portion formed by protruding the outside of the side plate 3c with the other side of the connecting portion 3e as an apex. A is the intersection of the narrowed portion 3f and the upper side of the connecting portion 3e, which is the center of bending when the side plate 3c is bent. The connecting portion 3e
Since the upper side is formed at substantially the center position of both side ends of the side plate 3c, the side plate 3c is bent in a substantially V-shape with the fin 3a about the bending center A by the narrowed portion 3f. At this time, since the amount of expansion and contraction on both sides of the bent portion is substantially the same, the ventilation of the bent portion is less likely to be impaired, and the heat exchanger 3 can be configured to prevent a decrease in heat exchange rate. . Further, as shown in FIGS. 3 (A) and 3 (B), the substantially triangular pyramid-shaped narrowed portion 3f is formed so as to project outwardly on the side opposite to the fin 3a. The side plate 3c can be easily bent without contacting the fin 3a. Further, by providing the fin 3a with a notch (not shown) having a substantially triangular shape corresponding to the position of the substantially triangular pyramid-shaped narrowed portion 3f, the fin 3a is provided with the side plate 3c.
Along with this, it can be easily bent.

In the above structure, as shown in FIG. 3 (B), the fin 3a is further bent by bending the three bending sides of the narrowed portion 3f around the bending center A.
At the same time, the side plate 3c is bent and formed in a substantially V shape. As a result, as described above, it can be disposed in the main body 1 in a downsized state, and the amount of expansion and contraction on both sides of the bent fin 3a is substantially the same, so that it is difficult to impair the air permeability. As a result, the heat exchanger can be prevented from lowering its heat exchange rate.

With the above structure, as shown in FIG. 1, the air sucked from the suction port 2 is formed into a bent shape, so that the air can be downsized and the breathability of the bent portion is not impaired. The heat is exchanged in the exchanger 3, the air is sent to the outlet 5 by the blower fan 4, the left and right airflow directions are adjusted by the left and right airflow direction plates 6, and the up and down airflow directions are adjusted by the up and down airflow direction plates 7, and the indoor air Harmonize.

[0009]

As described above, according to the present invention, the side plates can be easily bent around the substantially central positions of both ends thereof.
The heat exchanger has a structure that can be downsized and does not impair the air permeability of the bent portion of the fin, and can prevent a decrease in heat exchange rate.

[Brief description of drawings]

FIG. 1 is a side view of a heat exchanger showing an example used in an indoor unit of an air conditioner according to the present invention.

FIG. 2 is a side view of a main part of the heat exchanger according to the present invention.

FIG. 3 is a side view of a main part of a side plate provided in a heat exchanger according to the present invention, (A) showing a state before being bent and (B).
Indicates a bent state.

FIG. 4 is a side view of a heat exchanger showing an example used in an indoor unit of an air conditioner according to a conventional example.

FIG. 5 is a side view of a main part of a heat exchanger and a side plate according to a conventional example,
(A) shows the state before the bend formation of the heat exchanger,
(B) shows a state in which the side plate is bent and formed.

[Explanation of symbols]

 1 Indoor unit body 2 Suction port 3 Heat exchanger 3a Fin 3b U-shaped tube 3c Side plate 3d Cut part 3e Connection part 3f Throttling part 4 Blower fan 5 Air outlet 6 Left and right wind direction plate 7 Vertical wind direction plate A Folding center

Claims (4)

[Claims] 1. A large number of flat plate fins arranged in parallel at regular intervals and through which an air flow flows, side plates provided on both sides of these flat plate fins, and orthogonal to the fins and the side plates. Connected in a zigzag pattern, and multiple U
It is composed of a heat transfer tube which is connected by a character pipe and through which a fluid flows inside, a concave cut portion is formed on one side of the side plate and a connecting portion is formed on the other side, and a substantially central portion of the connecting portion is formed. While forming a substantially triangular pyramid-shaped narrowed portion with the other side as the apex, a notch corresponding to the position of the narrowed portion is formed on the other side of the fin, and the narrowed portion forms the side plate and the fin. A heat exchanger characterized by being bent in a substantially V shape. 2. The heat exchanger according to claim 1, wherein the upper side of the connecting portion is formed at a substantially central position of both side ends of the side plate. 3. The heat exchanger according to claim 1, wherein the throttle portion is formed so as to project to the outside of the side plate. 4. The heat exchanger according to claim 1, wherein the cutout portion is formed in a substantially triangular shape.