JP3250903B2 - 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 constituting an indoor unit, for example, and more particularly to an improvement in a heat exchanger structure.

[0002]

2. Description of the Related Art An air conditioner generally used comprises an indoor unit arranged in a room to be air-conditioned and an outdoor unit arranged outdoors, and these units are connected to each other by a refrigerant pipe and electric wiring. .

[0003] From the user's side, there is a great demand for downsizing these units and reducing the installation space, and it is necessary for each manufacturer to increase the heat exchange capacity while satisfying such conditions.

As one of the solutions, in recent years, particularly in an indoor unit, as shown in Japanese Utility Model Laid-Open No. 60-118430, a heat exchanger is formed by bending the heat exchanger into a "C" shape. While maintaining the exchange area, the height of the heat exchanger itself is suppressed, and the height of the unit body is reduced.

[0005]

However, in this type of heat exchanger, after bending to a set angle, this bending angle must be maintained. However, in the above-described technique, the end plate constituting the heat exchange pipe is required. Neither of the heat radiation fins nor the heat radiation fins have means for securing a bending angle.

[0006] Therefore, in the operation of disposing the bent and formed heat exchanger in the air conditioner main body, the bending angle of the heat exchanger cannot be secured, and the angle may differ from the set angle. There is.

It is also conceivable to prepare another part for securing the bending angle, fabricate a plate-shaped heat exchanger and bend it, and then attach the above part to the heat exchanger. In addition to the increase in the number of installations and the time required for installation, the productivity is adversely affected, and it is difficult to secure the position and the angle with respect to the cross flow fan arranged opposite to the heat exchanger as set.

As a result, in the front portion of the heat exchanger corresponding to the front suction port having the largest intake air volume, the distance between the rear surface side and the peripheral surface of the fan greatly differs in each portion.

At the part corresponding to the front suction port, the suction pressure of the heat exchange air tends to vary, and the suction air volume is not constant. A so-called rumbling sound is generated as the fan blowing noise, which impairs quiet operation.

Further, a gap is formed between the heat exchanger and the air conditioner body and the fan mounting portion, from which air that does not pass through the heat exchanger, so-called raw air, enters the ventilation passage of the air conditioner body. As a result, there is a problem that internal dew is generated, the main body and the components are wet, and the air is blown into the room to be air-conditioned on the blowing wind.

The present invention has been made in view of the above circumstances, and an object of the present invention is to secure a bending angle of a heat exchanger folded in multiple stages and to be able to arrange the heat exchanger in an air conditioner body as set. By accurately maintaining the distance between the heat exchanger and the blower fan, reducing the suction pressure difference, reducing blower noise, improving heat exchange efficiency, and reducing the number of parts required for comfortable air conditioning by preventing the occurrence of internal dew. It is an object of the present invention to provide an air conditioner that can achieve an improvement in productivity without increasing.

[0012]

In order to satisfy the above-mentioned object, the air conditioner of the present invention has end plates on both side ends , and a large number of radiating fins have a small gap between the end plates. In the air conditioner provided with a heat exchanger in which a heat exchange pipe is penetrated through the end plate and the radiating fin, the radiating fin is arranged from one side edge of the fin upper part to the other side edge.
Notch to the front side of the
At a predetermined distance from the fin to the lower edge of the fin, and on the other side
It has multiple notches that are cut out from the edge to
The end plate is paired with the cut portion of the radiation fin.
Notch from one side edge to the front side of the other side edge
A first notch portion provided on the other side edge of the first notch portion;
From the first connecting portion in the shape of a standing wall and the first notch portion
Across the lower edge of the end plate, facing the cutout of the radiating fin
Notch from one side edge to the side just before the other side edge
A second notch having the same shape as the notch of the radiation fin,
A second wall-shaped second provided at the other side edge of the second cutout
Of the second notch and the inside of the second notch
The above heat exchanger, comprising a hook portion and a hook portion to be formed.
Are the notch of the radiation fin, the first notch of the end plate and
And the first connecting part are bent together to cut the heat radiation fin.
The notch and the second notch and the second connecting portion of the end plate are both bent to form a multi-stage curve, and the notch and the hook
The joint does not exist on the same plane before bending,
In a bent state, they are overlapped in parallel with each other and fixed.

[0013]

[0014]

[0015]

The radiation fin and the end plate constituting the above heat exchanger
In a state where the notch portion and the notch portion are bent, the hooking portion and the hooking portion provided here are hooked together and hooked and fixed.

That is, the bending angle is secured at the same time as the bending, and there is no change when the heat exchanger is mounted at a predetermined position. Therefore, the installation is performed at the bending angle as set, the suction pressure and the suction air volume become constant, and the unevenness of the heat exchange efficiency is reduced.
There is no gap at locations other than the setting, so that the occurrence of internal dew is prevented, and manufacturability is good.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an indoor unit of the air conditioner is configured. Unit body 1, which is the air conditioner body
A front suction opening 2a is opened at the front side of the grille, into which a grill 3a is fitted. On the other hand, the upper suction port 2b is also opened on the upper surface side of the unit body 1, and the grill 3b is also provided here.
Is inserted.

An outlet 4 is provided from the front to the lower part of the unit body 1. An air filter (not shown) and a molded heat exchanger 5, which will be described later, are disposed opposite the front part, which is the upper part of the outlet 4, and the upper inlets 2a, 2b.

Next, the heat exchanger 5 will be described in detail. The heat exchanger 5 is composed of a radiation fin 12 and a heat exchange pipe 13 as shown in FIGS. 2A and 2B, and an end plate 30 as shown in FIG.

First, the radiation fins 12 will be described. This is formed in a vertical shape with a predetermined width in the left and right directions and long in the up and down direction, and a number of sheets are arranged side by side with a narrow gap in the direction of the paper.

The heat dissipating fins 12 are arranged in two rows on the left and right.
The heat exchange pipe 13 is fitted together with a mounting hole 41 provided in the end plate 30 described later.

The heat dissipating fins 12 are formed in advance by press punching. In the figure, a V-shaped cut portion 20 is provided at a predetermined position of the upper portion A in a horizontal direction from one side edge 12a and from a middle portion. And is extended slightly to the near side of the other side edge 12b.

That is, a portion between the tip of the cut portion 20 and the other side edge 12b of the radiation fin 12 is left as the first connection portion 15. A plurality of notches 21 are provided at predetermined intervals from the notch 20 to the lower edge. The notch 21 has an upper side 21a and a lower side 21b.
Each side portion has at least a plurality of straight lines bent in a zigzag shape in different directions, and is formed as a whole in a bent and deformed triangular shape.

The front end of the notch 21 extends slightly forward of the one side edge 12a, and a second connection is made between the front end of the notch 21 and the one side edge 12a of the radiation fin 12. It is left as part 16.

A connecting portion 17 is integrally formed in the middle of the notch 21. These joints 17
Are the upper side 21a and the lower side 21b forming the notch 21
And the narrow side connecting the middle part with each other,
It is provided in a state inclined at a predetermined angle with respect to the one side edge 12a and the other side edge 12b.

As shown in FIG. 2C, a substantially intermediate portion of the connecting portion 17 is previously formed in a triangular cross section so as to protrude in a predetermined surface direction, and has a fold at a top portion and a base end portion. 18 are formed.

The folds 18 are provided so that when the radiating fins 12 are partially bent as described later, all the connecting portions 17 themselves protrude in the same direction and are folded.

Each of the mounting holes 2 except between the mounting holes 22 on the upper and lower sides via the cutout 20 and between the mounting holes 22 on the upper and lower sides via the notch 21.
A rising slit portion 24 is provided between the two.

The rising slit portions 24 are made up of rising pieces that are cut and raised integrally on the heat radiation fins 12 in the vertical direction and on both surfaces thereof, and efficiently provide heat exchange air guided along both surfaces of the fins. You can get in touch.

The radiation fin 12 thus formed
Are arranged side by side, and end plates 30 as shown in FIG. 3 are arranged side by side on both sides. That is, the end plate 30 is made of a material that is thicker and more rigid than the radiation fins 12, and is formed by press punching as shown in the figure.

The upper portion Aa is provided with a symmetrical first notch 31 in the upper and lower portions from one side edge 32a to the other side edge 32b. It is integrally connected via a first connecting portion 33 in a shape, and the connecting portion 33 can be bent in the surface direction.

From the first connecting portion 33 to the lower edge,
A plurality of second notches 34 are provided at predetermined intervals. The second cutout portion 34 is provided from the lower end of the one portion 35 to the other side edge 32b except for the upright wall-shaped piece portion 35 formed on one side edge 32a.

Each of the second notches 34 is
Each side portion 34 includes an upper side portion 34a and a lower side portion 34b.
The a and b have both ends extending in a direction orthogonal to the piece portion 35, and a middle portion connecting the both ends is obliquely inclined.

Part of the piece 35 between the upper side 34a and the lower side 34b is bent, in other words, the second notch 34 connecting the upper and lower end plate portions.
Is formed.

On the other side edge 32b side of the lower side portion 34b, a protruding piece 37 which is bent so as to be one step down from this surface and is bent integrally with a surface parallel to the lower side portion is provided. A locking claw 38 is provided on the upper surface of the protruding piece 37, and a locking portion 39 is formed by these.

On the other hand, on the other side edge 32b side of the upper side portion 34a, a hooking hole 40 as a hooking portion is provided. That is, the engaging portion 39 and the engaging portion 40 are located at positions facing each other, and in this state (the state before the bending process), they do not exist on the same plane.

The first connecting portion 33 of the end plate 30 corresponds to the position of the first connecting portion 15 in the radiating fin 12, and the second connecting portions 36. 16... Accurate settings are made to correspond to the position.

The end plate 30 is provided with mounting holes 41 arranged in two rows on the left and right, through which the heat exchange pipes 13 pass. These mounting holes 41 are provided at positions facing the mounting holes 22 provided in the heat radiation fins 12 and, of course, have the same diameter.

The radiating fins 12 are arranged side by side with a small gap, and the end plates 30 are provided on both sides.
Are arranged, and penetrate the heat exchange pipe 13 bent in a U-shape through the mounting holes 41 and 22 communicating with each other.

The first and second cutouts 3 in the end plate 30
1, 34, that is, the open ends of adjacent heat exchange pipes 13 except for the upper and lower sides of the cutout portion 20 and the cutout portion 21 in the radiation fin 12 are connected to each other by U-bends to form a flat plate-shaped heat exchanger. .

From this state, the first end plate 30
Of the notch 31 and the notch 20 of the heat radiation fin 12 are bent. In each case, end plate 3
The heat radiation fin 12 is bent inward by applying an urging force from the one side edge 32a to the other side edge 32b in the direction from the one side edge 32a to the other side edge 12b.

As shown in FIG. 1 again, by this bending process, the first cut portion 31 and the cut portion 20 are bent and formed into an upper portion and a lower portion.
The heat exchanger 5 is divided into two parts in an inverted V shape.

Here, the first notch 31 and the notch 2
0 is bent at the rear side of the unit body 1 so that the rear heat exchanger 5
B, and the heat exchanger portion on the lower side of the first cutout and the cutout portion is formed to be bent on the front side of the unit main body 1, and is therefore called the front side heat exchanger 5A.

The rear-side heat exchanger 5B and the front-side heat exchanger 5A are connected by a bent first connecting portion 33 on the end plate 30 and a bent first connecting portion on the radiation fin 12. 15 will be linked.

The front-side heat exchanger 5A further includes an end plate 3
0, the plurality of second notches 34...
Are bent along the notches 21. That is, the upper sides 34a,
The heat exchanger portions above and below each of the cutouts 34, 21 are bent inward by being bent so that the bottom 21a and the lower sides 34b, 21b are in contact with each other.

The second connecting portion 36 of the end plate 30 and the second connecting portion 16 of the radiating fin 12 connect the heat exchanger portions of the front heat exchanger 5A.
Due to the shape and structure of each notch 34, 21, the front side heat exchanger 5
All the heat exchanger parts constituting A are bent at the same angle.

Further, with the molding of the front-side heat exchanger 5A, each protruding piece 37 constituting the engaging portion 39 of the end plate 30 overlaps in parallel with the lower surface of the opposing upper side portion 34a and overlaps with the upper surface. The projecting hook 38 engages with the hook hole 40.

Therefore, the two side portions are firmly connected via the bent second notch 34 in the end plate 30, and the bending angle is secured.
In this way, the heat exchanger 5 has an inverted V shape as a whole, and the front heat exchanger 5A is bent and formed in multiple steps with the other side edges 32b and 12b inside, while the rear face is formed. The side heat exchanger 5B is formed in a straight and rectangular shape without any curved portion.

Thereafter, the remaining adjacent heat exchange pipes 13
U-bends are connected to each other at the open ends of the heat exchanger 5 to form one system of flow path in the heat exchanger 5. When disposing the heat exchanger 5 at a predetermined position in the unit main body 1, the end plates 30 on both side ends of the heat exchanger 5 are directly attached and fixed to the unit main body 1. Also at this time, the locking claw 38 provided on the end plate 30
And the engagement hole 40 does not come off, so that the bending angle is reliably maintained.

A front drain pan 6a is provided at the lower end of the front heat exchanger 5A, and a rear drain pan 6b is provided at the lower end of the rear heat exchanger 5b. The drain pans 6a and 6b communicate with each other via a communication path (not shown).
Drain water collected by the rear drain pan 6b flows through the communication passage to the front drain pan 6a.

A cross flow fan 7, which is a blower fan constituting an indoor blower, is disposed on the rear side of the front side heat exchanger 5A. The cross flow fan 7 is provided with a large number of blades (blades) 8 at predetermined intervals, and has a circular cross section as a whole. A part of the peripheral surface of the cross flow fan 7 is surrounded and bent by the front heat exchanger 5A.

The distance between the rear side edge of the front side heat exchanger 5A and the peripheral surface of the cross flow fan 7 is gradually approaching and gradually increasing, and the difference in the change is the same as that of the conventional heat exchanger (for example, 6
0-118430).

The upper portion of the cross flow fan 7 is opposed to the front heat exchanger 5A and the rear heat exchanger 5B, which are formed in the inverted V-shape. The cross flow fan 7 has an umbrella shape. Covered like

The outer bottom surface of the front drain pan 6a also serves as the front nose of the cross flow fan 7 and also serves as the upper part of the outlet passage of the outlet 4 opening at the lower front side of the unit body 1. On the side surface of the rear drain pan 6b, a part of the casing 10 forming the lower part of the outlet 4 is extended and also used, and this part becomes a back nose.

Then, for example, a heating operation is performed. The compressor of the outdoor unit (not shown) is driven to perform the refrigeration cycle operation, and the cross flow fan 7 in the indoor unit is driven. The high-temperature and high-pressure refrigerant discharged from the compressor is guided to a heat exchanger 5 as a condenser.

The heat exchange air, which is the room air to be conditioned, is introduced from the front suction port 2a and the upper suction port 2b, and is guided to the heat exchanger 5 through the filter. That is, one side edge 32a, 1 of the front-side heat exchanger 5A and the rear-side heat exchanger 5B.
From 2a, the gap between the end plate 30 and the radiating fins 12 and between the radiating fins 12 is conducted, and after coming into contact with the radiating fins 12 and the heat exchange pipe 13, it is led out from the other side edges 32b, 12b.

The refrigerant is guided to the heat exchanger 5, releases heat of condensation while conducting through the heat exchange pipe 13,
To heat. Heat exchange air is conducted between the radiating fins 12 to perform heat exchange.

The heat-exchanged air absorbs heat, rises in temperature, is led out of the front and rear heat exchangers 5A and 5B, and is blown out from the blow-out port 4 to the room to be air-conditioned through the cross flow fan 7 to perform a heating function. In particular, since the heat exchanger 5 has an inverted V-shape between the front heat exchanger 5A and the rear heat exchanger 5B, the height of the heat exchanger 5 as well as the unit body 1 can be small, and the heat exchanger 5 can be installed. It contributes to space reduction.

Since the bent portion of the front-side heat exchanger 5A is formed at a plurality of positions, the heat exchanger 5A almost surrounds a part of the peripheral surface of the cross flow fan 7,
The difference in the distance between the front-side heat exchanger 5A and the cross flow fan 7 having the largest intake air volume is extremely small in each part.

Therefore, the difference between the maximum distance and the minimum distance in the distance between the front-side heat exchanger 5A and the cross flow fan 7 becomes extremely small, the suction pressure and the amount of suction air of the heat exchange air become constant, and the blow noise The heat exchange efficiency is improved while obtaining the reduction.

The second notch 34 in the end plate 30 constituting the front-side heat exchanger 5A and the radiating fin 12
Since the notches 21 in each of the above have the same shape and are bent at the same angle in the respective notches 34 and 21, the ventilation resistance of the heat exchange air passing through the respective bent portions becomes the same as each other, and the suction pressure of the heat exchange air In addition, the suction air volume becomes uniform with each other, so that the blowing noise is further reduced and the heat exchange efficiency is improved.

Incidentally, with the molding of the front-side heat exchanger 5A, the projecting piece 37 constituting each hooking portion 39 overlaps in parallel with the lower surface of the opposing upper side portion 34a, and the hooking claw 38 engages with the hooking hole 40. Hang up with. The two side portions are firmly connected, and even if a strong external force is applied, the bending angle is secured.

Even when the heat exchanger 5 is disposed at a predetermined position in the unit body 1, there is no change in the engagement state of the end plate 30, so that the bending angle of the front side heat exchanger 5A can be maintained. To be continued.

As a result, in addition to the reduction of the blowing noise and the improvement of the heat exchange efficiency as described above, the position setting of the heat exchanger 5 with respect to the unit body 1 and the cross flow fan 7 becomes accurate,
Since there is no unnecessary gap, the occurrence of internal dew can be prevented, and comfortable air conditioning can always be obtained.
In addition, the productivity of the air conditioner can be improved.

On the other hand, if the ventilation resistance of each bent portion and the rising slit portion 24 adjacent to the bent portion are set to be the same, the ventilation resistance of the entire front-side heat exchanger 5A becomes the same. The sound can be reduced and the heat exchange efficiency can be improved.

The rear heat exchanger 5B, which has a relatively small intake air volume compared to the front side, has a straight shape with no bent portion, so that heat can be exchanged effectively without disturbing the flow of the intake air. it can.

Since the side portion of the rear drain pan 6b forms a back nose, the heat exchange air passing therethrough is guided smoothly without any disturbance, and the blowing noise can be reduced.

An end plate 30A as shown in FIG. 4 may be used. FIG. 2 shows only a part of an end plate constituting the front-side heat exchanger 5A. From this one end 32a to the other end 32b
Is provided with a second notch 34, and a portion 35 on one side 32a side forms a second connecting portion 36. The second cutout portion 34 includes an upper side portion 34a and a lower side portion 34b. A protruding piece 37 is integrally provided on the lower side portion 34b on the other side edge 32b side, and a hooking claw 38 is provided here. Hook part 3 provided
9. The upper side 34a has a hooking hole 4 as a hooking portion.
0 is provided. Further, there is basically no difference from the above-described ones, such as the mounting hole 41 for the heat exchange pipe 13 is provided in a state of being arranged in two rows on the left and right and shifted vertically.

Here, a wind-stop piece 42 is integrally provided on the outside of each of the projecting pieces 37 and in parallel therewith from the lower side 34b of the second cutout 34 toward the upper side 34a. . Each of the wind-stop pieces 42 has a predetermined width in a direction orthogonal to the surface direction of the protruding piece 37, and the leading edge thereof is in a state before the bending shown in FIG. There is a narrow gap.

Then, as shown in FIG. 7B, by bending along the second notch 34 to form the front side heat exchanger 5A, the latching claw 38 is engaged with the latching hole 40. The upper and lower portions of the notch 34 are firmly engaged with each other to secure the bending angle, and the leading edge of the windshield piece 42 contacts the upright wall 43 integrally formed on the upper side. Touch

Like the end plate 30 described above, this end plate 3
Even at 0A, the front heat exchanger 5A was bent in a state where the front-side heat exchanger 5A was formed because of a relatively thick plate thickness and a manufacturing point such as setting a fulcrum of bending to the second connecting portion 36. Particularly on the one end edge 32a side of the second notch 34,
Some gap a is formed.

When the above-described operation is performed, not only air is introduced into the front-side heat exchanger 5A from the side edges 12a and 32a, but also both sides are opened. The heat exchange air is also introduced from here.

That is, heat exchange air is also introduced from the gap a formed on one side edge 32a of the end plate 30A located on both side ends of the front side heat exchanger 5A. , And is discharged from the air discharge side in a state of heat exchange. Therefore, the gap a
Is not a drawback.

On the other hand, on the other end 32b side of the bent second notch 34, the above-mentioned windshield piece 42 is provided. Therefore, the windshield piece 42 prevents the introduction of air from the other side edge 32b.

If the above-mentioned structure is not provided, the heat exchange air is also introduced from the other side edge 32b side, and is drawn out of the heat exchanger 5A without being in contact with the radiation fins 12. The so-called raw air mixes with the heat-exchanged air to reduce the heat exchange efficiency.
The above problem is eliminated by the existence of.

In each of the above embodiments, the front-side heat exchanger 5A
Is provided with a second cutout portion 34 in the end plates 30 and 30A and a plurality of cutout portions 21 in the heat radiation fins 12 to be bent. However, the present invention is not limited to this, and a plurality of cutout portions are provided. May be bent at the same angle.

Further, in the above embodiment, the front-side heat exchanger 5A and the rear-side heat exchanger 5B are formed by bending a single fin, but the front-side heat exchanger 5A and the rear-side heat exchanger 5B are connected to each other. It may be configured to be individually formed and arranged in an inverted V shape. Further, the present invention is not limited to the structure of the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

[0078]

As described above, according to the present invention, the end plate and the radiating fin of the heat exchanger are bent to form a multi-stage curve, and the latching portion and the latching portion are engaged with each other in the bent state. Since the heat exchanger is folded in multiple stages, the bending angle is secured, and it is not affected even when it is installed in the air conditioner body. To reduce the suction pressure difference by accurately maintaining the distance to the air, reducing the blowing noise, improving the heat exchange efficiency, and achieving comfortable air conditioning and improving manufacturability by preventing the occurrence of internal dew. Play.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner, showing one embodiment of the present invention.

FIG. 2A is a front view of a radiation fin according to the embodiment.
(B) is an enlarged view of a part of the radiation fin. (C)
FIG. 4 is a vertical cross-sectional view of a radiating fin connection portion.

FIG. 3A is a partial perspective view of an end plate of the embodiment.
(B) is a front view of an end plate. (C) is a partial perspective view of the end plate. (D) is a partial perspective view of an end plate. (E) is a partial side view of an end plate.

FIG. 4A is a partial front view of another embodiment before bending an end plate. (B) is a partial front view in a folded state.

[Explanation of symbols]

Reference numerals 30, 30A: end plate, 12: radiating fin, 13: heat exchange pipe, 5: heat exchanger, 34: second notch (of the end plate), 21: notch of (radiation fin), 37: hook Pawls, 3
9: Hook, 40: Hook (hook hole), 42: Windshield piece.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-109271 (JP, A) JP-A-5-164347 (JP, A) JP-A-5-172362 (JP, A) 136429 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00

Claims (1)

(57) [Claims] An end plate is provided at both side ends, and a plurality of radiating fins are juxtaposed between these end plates with a small gap therebetween.
In an air conditioner provided with a heat exchanger in which a heat exchange pipe penetrates through the end plate and the radiating fin, the radiating fin is cut from one side edge of the upper portion of the fin to a side closer to the other side edge.
At a predetermined interval from the cut portion to the lower edge of the fin.
That are notched from the other side edge to the front side of one side edge
Includes a notch, the end plate at a position opposed to the cut portion of the heat radiation fins, one
A first notch cut from the side edge to a side short of the other side edge
And a first wall-shaped first cutout provided on the other side edge of the first cutout.
From the first notch to the lower edge of the end plate.
From one side edge to the other side edge
Notch to the side, same shape as the notch of the above-mentioned heat radiation fin
And a second wall-shaped second cutout provided on the other side edge of the second cutout.
And a hook formed on both sides and inside of the second notch.
And a hook portion, wherein the heat exchanger is provided with a cut-out portion of the radiation fin and a first portion of the end plate.
Notch and the first connecting portion are both bent, and
The notch of the heat fin, the second notch of the end plate and the second link
The connecting portion is bent together to form a multi-stage curve, and the engaging portion and the engaging portion are flush with each other before bending.
Not parallel to each other and folded parallel to each other
An air conditioner characterized by being hooked and fixed.