JP3150505B2 - Heat exchanger for 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 a heat exchanger suitable for a wall-mounted indoor unit of a separation type air conditioner.

[0002]

BACKGROUND ART One example of a wall-hanging type indoor unit of the separation-type air conditioner is shown in Fig. In FIG. 2 , 1 is a main body casing, 2 is a front panel mounted on the front surface of the main body casing 1, 10 is a suction grill mounted on the front panel 2 so as to be openable and closable, and 3 is arranged to face the suction grill 10. The heat exchanger 4 is provided with a cross-flow fan disposed at the lower rear of the heat exchanger 3, the outlet 5 is provided at a lower portion of the front panel 2, and the outlets 6 a and 6 b are provided at the outlet 5. Horizontal flapper 7, a vertical louver disposed at the outlet 5, 8 a drain pan disposed below the heat exchanger 3, 9
Denotes an air filter disposed on the back of the suction grille 3, and 11 denotes a mounting plate.

During operation of the air conditioner, the fan 4 rotates,
Refrigerant from an outdoor unit (not shown) circulates through the heat exchanger 3. Then, the indoor air is sucked into the main body casing 1 from the suction grill 10, and dust contained therein when flowing through the air filter 9 is removed. And heat exchanger 3
Is cooled or heated by heat exchange with the refrigerant in the process of flowing through,
Next, after being sucked and urged by the fan 4, the blowing direction is regulated by the vertical louver 7 and the horizontal flappers 6 a, 6 b, and the air is blown into the room from the air outlet 5.

As shown in FIG. 3 , the heat exchanger 3 is composed of a plate fin and tube type heat exchanger, and has many strip-shaped plate fins 3a and side plates 3b on both sides thereof.
Are arranged in parallel with each other at a small interval, and the ends of a number of heat transfer tubes 3c penetrating the plate fins 3a and the side plates 3b at right angles are connected to each other by bend tubes 3d.

[0005] The heat exchanger 3 is bent into a V-shape in the longitudinal direction of the plate fins 3a and the side plates 3b, thereby increasing the heat without increasing the thickness, width and height of the indoor unit. The replacement area is increasing.

As shown in FIG. 2 , the plate fin 3a has cuts 3e , 3e ,
3f is provided, the room air of the plate fins 3a by interpolating fitting a windshield plate 12 in the cut open portion 3g of the outer was expanded by bending <br/> folding the plate fins 3a to dogleg This prevents the bent position from flowing through with little heat exchange therewith.

[0007] The side plate 3b, as shown in FIG. 3,
After the heat exchanger 3 is bent, the connecting plate 13 is interposed in the gap between the upper side plate 3b1 and the lower side plate 3b2 to prevent indoor air from flowing from the gap. Preventing.

[0008]

The above-mentioned conventional heat exchanger 3
In, the side plate 3b is connected to the upper side plate 3b
1 and the lower side plate 3b2, and after the heat exchanger 3 was bent, the connection plate 13 was interposed between the upper side plate 3b1 and the lower side plate 3b2 to connect them to each other. If the bending angle of the heat exchanger 3 has an error, the connection plate 13 cannot be connected or a gap is formed between the connection plates 13. There was a risk that room air would flow in from the gap.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is to arrange them so as to be parallel to each other at a small interval.
A strip-shaped side plate strip and a number of plate fins arranged in <br/> both sides of the fin group that, the pre
Comprising a plurality of heat transfer tubes penetrating perpendicularly the Tofin and the side plate, the plate fin and Saidopu
Notch at least in the leading edge of the rate along its length
And the plate fin and the side plate
Above when folded into a U-shape in the middle of its length
Notch is fitted in the cutout opening portion at both end portions the inner surface of the air shielding plate is to establish a wind shielding plate for Engai the cutout opening in front of the cutout opening of the outer formed by expanding Notch from the outside of the side plate
The play inside the side plate through the opening
To suppress the air that tries to flow into the gap between the tofins
A heat exchanger for an air conditioner, characterized in that an auxiliary wind shield plate is provided protruding therefrom.

[0010]

[0011]

According to the present invention, the notch is formed by expanding the notch when the plate fin and the side plate are bent into a dogleg shape because of the provision of the above structure.
That the air to be flowed from the notch opening of the outer is the wind shield by the windshield plate, and, outside of the side plate Karaso
The plate inside the side plate through the notch opening
The air flowing into the gap between the fins is suppressed by the auxiliary wind shield .

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIG.
Is an exploded perspective view, and (B) is a partially enlarged side view. The side plate 31 of the heat exchanger 30 is vertically integrated, and is bent into a U-shape by notches 32 and 33 provided at the front and rear edges thereof. When the plate fins 38 and the side plates 31 are bent into a U-shape, the notches 32 are expanded.
Windshield plate 35 is installed in the front of the notch opening 34 formed outside the auxiliary air shielding plate 36 and the engaging piece 37 is projected from the both end portions the inner surface of the air baffle plate 35.

After arranging the side plates 31 on both sides of the plate fins 38 and allowing the heat transfer tubes 39 to pass therethrough,
These side plates 31 and plate fins 38 are bent into a dogleg shape. Thereafter, when installing the air shielding plate 35 in front of the notch opening 34, the auxiliary air shielding plate 36 at both ends are fitted into the cutout opening 34, and the engaging piece 37 and the side plate 31 which Is inserted into the gap between the plate fin 38 and the adjacent plate fin 38. Air shielding plate 35 and the auxiliary air shielding plate 36 by engaging the engaging piece 37 to the heat transfer tube 39 is fixed in this position. Other configuration is the same as the conventional one shown in FIGS.

During operation of the air conditioner, indoor air is supplied to a heat exchanger.
From the front surface of 30, the gas flows through gaps between the plate fins 38, the side plates 31, and the heat transfer tubes 39, and in this process, exchanges heat with the refrigerant flowing through the heat transfer tubes 39 to be cooled or heated. At this time, the room air that is going to flow into the cutout opening 34 of the plate fin 38 is blocked by the windshield 35,
It is possible to prevent the room air from flowing out through the notch opening portion 34 with little cooling or heating. Further, the side plate 31 is passed through the cutout opening 34 from outside the side plate 31.
The air tends to flow into the gap inside the plate fins 38 of is suppressed by the auxiliary air shielding plate 36.

[0015]

[0016]

According to the present invention, plate fins and
Notch when side plate is bent in the shape of a letter
Air tends to flow from the outside of the cut-out opening which is formed by spreading is the wind shield by the air baffle plate, side play from the outside of the side plates through the cutout opening
The air that tends to flow into the gap between the plate fins inside the fin can be suppressed by the auxiliary wind shield . Further, since the side plate is bent together with a large number of plate fins, the number of parts is reduced and the number of steps is reduced as compared with conventional ones, so that the side plate can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, wherein (A) is an exploded perspective view and (B) is a partially enlarged side view.

FIG. 2 is a wall-mounted indoor unit of a conventional separation type air conditioner.
FIG. 2 is a schematic longitudinal sectional view of FIG .

FIG. 3 is a partial perspective view of a heat exchanger of the indoor unit.
There is .

[Explanation of symbols]

 30 Heat exchanger 38 Plate fin 31 Side plate 39 Heat transfer tube 34 Cutout opening 35 Wind shield 36 Auxiliary plate

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 1/00 F24F 1/00 401 F24F 13/30 F25B 39/00

Claims (1)

(57) [Claims] (1) so as to be parallel to each other at a very small interval
These and many plate fins arrayed strip Fi
A strip-shaped side plate disposed on opposite sides of the down group, the upper
Comprising a serial plate fin and <br/> numerous heat transfer tubes of the side plate through a right angle, the plate fin and Sa
Cut at least on the leading edge of the
Notches are provided, and the plate fin and side plate
The outside formed by expanding the notch when the rate is bent in the shape of a letter in the middle of its length.
At the front of the notch opening, a windshield covering the opening is installed, and the inside of both ends of the windshield is inserted into the opening and cut off from the outside of the side plate.
Through the notch opening in the inside of the side plate
Suppresses air flowing into the gap between the plate fins
A heat exchanger for an air conditioner, characterized in that an auxiliary wind shield for projecting is provided.