JP3039753B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to a bent structure of a heat exchanger including three blocks.

[0002]

2. Description of the Related Art As shown in FIG. 2, an air conditioner has an upright portion 5a and a rear inclined portion on the front side of an air passage 4 connecting an intake port 2 on an upper surface of a housing 1 and an outlet 3 on a lower front surface. The heat exchanger 5 is formed of three integrally formed blocks 5b and a front inclined portion 5c bent in an inverted V-shape on the back side. As shown in FIG. 3, cutouts 7 of approximately half width are formed at two predetermined positions behind the fins 6, and the cutouts 9 are similarly formed while leaving the flanges 8 at the same two positions. The pipes 11 are inserted into the formed left and right side plates 10 with the fins 6 interposed therebetween, and expanded to form the heat exchanger 5 integrally. As shown in FIG. 4 (B), the front half of the fin 6 is cut 6a at two positions at the position of the cutout portion 7, and the lower portion is bent upright and the center portion is bent rearward to form a rear inclined portion 5b. Reverse V on top to back
Three heat exchangers 5 which are bent into a letter shape to form a forward inclined portion 5c are integrally formed. As shown in FIG. 5A, an air filter 13 is inserted between the upper part and the housing along the bent part 12 of the rear inclined part 5b and the front inclined part 5c. The rear inclined portion 5 of the heat exchanger 5 at the upper part in the housing 1
When the b and the front inclined portion 5c are bent at an acute angle, the upper end of the fin 6 on the side of the rear inclined portion 5b that is cut vertically 6a projects. There is a danger that the corners 14 of the fins 6 may be caught and damaged by the air filter 13 when the air filter 13 is inserted. To avoid this, the upper part of the housing 1 is spread forward or the corners 14 of the fins 6 are removed. It is necessary to take measures such as mounting a separate part for suppressing the rising of the fins 6 by bending to save space. When the indoor unit is extended forward, the depth of the interior unit is large when viewed from below, and when the corners 14 of the fin 6 are bent, an air filter guide (not shown) is used. There was a problem that a separate part was required and the cost increased.

[0003]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention changes the method of cutting a fin between a rear inclined portion and a forward inclined portion after inserting a pipe into a fin and expanding the pipe. It is another object of the present invention to provide a heat exchanger that saves space and does not increase the cost.

[0004]

According to the present invention, there are provided fins which are arranged in parallel at regular intervals, and between which fins through which an airflow flows and heat transfer tubes through which a refrigerant flows at right angles to the fins, are provided. A heat exchanger in which cutouts of approximately half width are formed at two locations on the leeward side at predetermined positions in the direction, and the front end side of the cutouts is cut and bent at a predetermined angle to integrally form three blocks. In the air conditioner in which is disposed, the front end side fin of the cutout portion below the heat exchanger is vertically cut toward the cutout portion, and the front end fin of the cutout portion above the heat exchanger faces the cutout portion. It is characterized in that it is cut obliquely from the lower surface side and connected at the rear end side of the cutout so as to have a predetermined angle.

[0005]

As described above, according to the present invention, the fin between the rear inclined portion and the front inclined portion of the heat exchanger is cut obliquely from below to the cutout portion from the lower side to the upper side, whereby the fin is bent backward and then inclined. The upper end of the fin on the side can be formed flat.

[0006]

An embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1 (B), after punching out the fins 6 having the cutouts 7, the pipes 11 are inserted and expanded by sandwiching the side plates 8 (not shown) to form the heat exchanger 5. A cut 6a that separates the upright portion 5a and the rear inclined portion 5b is vertically inserted at a position of the cutout portion 7 below, and a cut 6b that separates the rear inclined portion 5b and the front inclined portion 5c is placed at another cutout portion 7. Insert diagonally from below to above. A heat exchanger 5 having three blocks is formed by bending backward at the position of the lower cutout 7 and bending the rear inclined portion 5b backward at the position of the upper cutout 7 to form a front inclined portion 5c.
Is formed. As shown in FIG. 1B, a corner at the upper end of the rear inclined portion 5b is formed flat.

[0007]

According to the present invention, the fin between the rear inclined portion and the front inclined portion of the heat exchanger is cut obliquely from below to the cutout portion from below to be bent.
The upper end of the fin on the rear inclined portion side can be formed flat. Thus, the upper part of the housing can be made thinner without increasing the cost.

[Brief description of the drawings]

1A and 1B are cross-sectional views of a main part of a heat exchanger according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of a main part before bending.

FIG. 2 is a longitudinal sectional view showing an outline of an indoor unit accommodating a conventional heat exchanger.

FIGS. 3A and 3B are side views showing an outline of a heat exchanger after bending, in which FIG. 3A is a fin, FIG. 3B is a side plate, and FIG.

FIG. 4A is a sectional view of a main part of a heat exchanger of a conventional example,
(B) is an essential part cross-sectional view before bending.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Inlet 3 Outlet 4 Air passage 5 Heat exchanger 5a Upright part 5b Back inclined part 5c Forward inclined part 6 Fin 6a Cut part 6b Upper cut part 7 Cutout part 8 Flange 9 Notch part 10 Side plate 11 Pipe 12 Bent part 13 Air filter 14 Corner

Claims (1)

(57) [Claims] 1. A fin that is arranged in parallel at regular intervals, and a fin through which an air current flows and a heat transfer tube through which a refrigerant flows at right angles to the fin, and a leeward side of a predetermined position in the longitudinal direction of the fin In an air conditioner in which a cutout portion of approximately half width is formed in two places, and a heat exchanger in which three blocks are integrally formed by cutting a front end side of the cutout portion and bending the cutout portion at a predetermined angle, The front end fin of the cutout portion below the heat exchanger is cut vertically toward the cutout portion, and the front end fin of the cutout portion above is cut diagonally from the lower surface side toward the cutout portion, An air conditioner wherein the cutout portions are connected at a rear end side so as to have a predetermined angle.