JP4214456B2 - Indoor heat exchanger for air conditioning - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a compact air-conditioning heat exchanger mainly used for home use, which is disposed on the indoor side.
[0002]
[Prior art]
2. Description of the Related Art There is known an air conditioning indoor side heat exchanger in which two cores are connected between their end portions in order to reduce the installation space in the room and the entire cross section is formed in a U shape. Such a heat exchanger has a first core and a second core, and the cores are fastened and fixed by fasteners such as bolts at the ends.
[0003]
[Problems to be solved by the invention]
In order to form a bending core as a whole by connecting two cores at their end portions, a bolt tightening operation using a plurality of fastening parts is required. For this reason, there is a drawback that the assembly is troublesome and the productivity is deteriorated.
Then, this invention makes it a subject to provide what can connect between two cores by almost one touch and without a fastening component.
[0004]
[Means for Solving the Problems]
The present invention according to claim 1 includes a plurality of fins (1) and tubes (2) arranged in parallel, and a first support plate (3) and a second support plate (4) arranged at the side ends. A pair of independent first core (5) and second core (6);
A rectangular opening (8) having a locking plate (7) at a corner of the first support plate (3) of the first core (5), and being opened in the locking plate (7);
A locking claw (9) formed by cutting and raising the second support plate (4) of the second core (6) on the outer surface side and in the vicinity of the locking claw (9) spaced apart from each other on the outer surface side A first convex portion (10) and a second convex portion (11) projecting from
The locking claw (9) of the second support plate (4) is fitted to the upper edge of the rectangular port (8) of the first support plate (3), and the locking plate (7 ) Is fixed to the first convex part (10) and the lower edge of the rectangular mouth (8) is fixed to the second convex part (11). is there.
[0005]
The present invention according to claim 2 is the method according to claim 1,
An air conditioning indoor heat exchanger in which the first support plate (3) of the first core (5) and the second support plate (4) of the second core (6) are connected in a plane U shape. is there.
The invention according to claim 3 is the invention according to claim 1 or 2,
Furthermore, the third core (6a) is connected to the corner of the second core (6) in the shape of a plane, and the connecting portion is formed in the same manner as the first core (5) and the second core (6). This is an indoor heat exchanger for air conditioning.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded view of an air conditioning indoor heat exchanger according to the present invention, FIG. 2 is an enlarged view of a portion II in FIG. 1, and FIG. 3 is an enlarged view of a portion III in FIG.
This heat exchanger has a pair of first core 5 and second core 6. In each core, as shown in FIG. 5, a large number of plate-type fins 1 are juxtaposed with a small gap, and a tube 2 is inserted through each fin 1, and the insertion portion is fixed in contact therewith. The ends of the tubes 2 are connected to each other to form a meandering refrigerant flow path as a whole.
[0007]
As shown in FIGS. 1 to 3, a pair of first support plates 3 are disposed on both sides of the first core 5, and a pair of second support plates 4 are disposed on both sides of the second core 6. In this example, the widths of the first support plate 3 and the second support plate 4 are formed larger than the widths of the respective plate fins, and the two cores 5 and 6 are connected to each other at portions protruding in the width direction. A locking plate 7 is projected and fixed at the lower end corner of the first support plate 3. The locking plate 7 can be formed by causing a part of the first support plate 3 to bulge out to the outer surface side by about the plate thickness. Alternatively, another plate material can be stacked and fixed on the portion. The locking plate 7 is formed with an inclination of 45 ° in this example with respect to the center line of the first support plate 3, but the angle can be appropriately determined according to the design conditions. A rectangular opening 8 is formed in the locking plate 7.
[0008]
Next, the second support plate 4 is formed by cutting and raising a locking claw 9 at an upper corner thereof. That is, as shown in FIG. 3, the locking claw 9 is bent outward by about twice the thickness of the second support plate 4, and the plane is formed in parallel with the second support plate 4. Further, a first convex portion 10 is projected from one side outer surface of the latching claw 9, and a second convex portion 11 is projected below the latching claw 9, respectively.
[0009]
The first support plate 3 and the second support plate 4 thus constructed are assembled as shown in FIGS.
That is, the latching claw 9 of the second support plate 4 is fitted to the square port 8 of the latching plate 7 from a direction inclined by 45 °, and the side edge of the latching plate 7 is fixed to the first convex portion 10. At the same time, the lower end edge of the rectangular opening 8 may be fixed to the second convex portion 11.
By doing in this way, the 1st support plate 3 and the 2nd support plate 4 are positioned in the plane direction, and are positioned also in the perpendicular direction of the plane.
[0010]
Next, FIG. 8 is a side view showing another embodiment of the present invention. In this example, in addition to FIG. 4, the third core 6 a is further connected to the corner of the second core 6 in the shape of a plane, and the connecting portion is formed in the same manner as the first core 5 and the second core 6. It has been done. For this purpose, a locking plate 7 similar to the first support plate 3 protrudes from the corner of the second support plate 4 of the second core 6, and the second support plate is formed on the third support plate 4 a of the third core 6 a. 4 is formed with the same locking claw 9, first convex portion 10, and second convex portion 11.
[0011]
[Modification]
The first support plate and the second support plate may exist only at one side end of the first core and the second core, respectively, and may not exist at the other side end. In this case, the side where the support plate exists can be connected as shown in FIGS. 4 and 7, and the side where the support plate does not exist can be connected by a plastic forming body (not shown) that matches the side end.
[0012]
[Operation and effect of the invention]
In the heat exchanger of the present invention, the first core 5 and the second core 6 can be coupled to each of the first support plate 3 and the second support plate 4 without fastening parts such as bolts. That is, the edge of the locking plate 7 is fixed to the first convex portion 10 in a state where the locking claw 9 of the second support plate 4 is fitted to the rectangular opening 8 of the first support plate 3, and the rectangular shape is obtained. Since the lower edge of the mouth 8 is fastened to the second convex portion 11, the two can be positioned and locked without a fastener such as a bolt. Therefore, it can be a highly productive heat exchanger.
[Brief description of the drawings]
FIG. 1 is an exploded explanatory view of an air conditioning indoor heat exchanger according to the present invention.
FIG. 2 is an enlarged view of a portion II in FIG.
FIG. 3 is an enlarged view of a portion III in FIG.
FIG. 4 is a side view showing an assembled state of the heat exchanger.
FIG. 5 is a front view of the same.
6 is an enlarged view of a portion VI in FIG. 5. FIG. 7 is an enlarged perspective view of a main portion in FIG.
FIG. 8 is a side view showing an assembled state of another heat exchanger of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fin 2 Tube 3 1st support plate 4 2nd support plate 4a 3rd support plate 5 1st core 6 2nd core 6a 3rd core 7 Locking plate 8 Rectangular port 9 Locking claw
10 1st convex part
11 Second convex part
12 fans
13 Refrigerant

Claims (3)

A large number of fins (1) and tubes (2) are arranged in parallel, and a first support plate (3) and a second support plate (4) are arranged at the side ends, and a pair of first cores (independent of each other) 5) and the second core (6),
A rectangular opening (8) having a locking plate (7) at a corner of the first support plate (3) of the first core (5), and being opened in the locking plate (7);
A locking claw (9) formed by cutting and raising the second support plate (4) of the second core (6) on the outer surface side and in the vicinity of the locking claw (9) spaced apart from each other on the outer surface side A first convex portion (10) and a second convex portion (11) formed to protrude from
The locking claw (9) of the second support plate (4) is fitted to the upper edge of the rectangular port (8) of the first support plate (3), and the locking plate (7 The air conditioning indoor heat exchanger is fixed to the first convex part (10) and the lower edge of the rectangular mouth (8) is fixed to the second convex part (11). In claim 1,
An air conditioning indoor heat exchanger in which the first support plate (3) of the first core (5) and the second support plate (4) of the second core (6) are connected in a plane U shape. In claim 1 or claim 2,
Furthermore, the third core (6a) is connected to the corner of the second core (6) in the shape of a plane, and the connecting portion is formed in the same manner as the first core (5) and the second core (6). Indoor heat exchanger for air conditioning.

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