JPH1062085A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger which uses no exclusive component for preventing scattering of a waterdrop sticking to a connecting part of a heat transfer tube, enables reduction of the number of components and the number of operating processes and is advantageous to the cost. SOLUTION: A heat exchanger facing an inlet in the front of the main body of an indoor machine and being disposed vertically is constructed of fins 12 which have a plurality of through holes respectively and are stacked in large numbers at prescribed intervals and in parallel, side plates 13 which hold the stacked fins 12 on the opposite sides and have a plurality of insertion holes respectively, a plurality of hairpin-shaped heat transfer tubes 14 which are inserted horizontally through the through holes and the insertion holes and connecting tubes 14 which connect the respective upper and lower opening ends of these heat transfer tubes 14 sequentially. In this case, water leading pieces 16 projecting perpendicularly are formed by cutting and raising between the heat transfer tubes 14 on the side plates 13 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for an air conditioner, and more particularly, to a structure of a side plate sandwiching both sides of a fin.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a conventional air conditioner has a main body 21, a main body 21, a base 22, a front cover 23 detachably mounted on the base 22, and a front cover 23. A front panel 24 is attached to the front cover 23 so as to be openable and closable. The front panel 24 is provided with a suction port 25 for taking in room air, and a lower part of the front surface is formed with a blowout port 26 for sending heat-exchanged air into the room. An air filter 27, a heat exchanger 29 and a blower (cross flow fan) 30 are arranged in an air passage 27 connecting the suction port 25 and the outlet 26, and the air exchanged by the heat exchanger 29 is blown by the blower 30. To the outlet 26. Further, a lower part of the heat exchanger 29 is provided with a dew tray 31 for receiving defrost water. The heat exchanger 29 has a plurality of through holes and a plurality of fins 32 stacked in parallel at predetermined intervals.
A side plate 33 having a plurality of insertion holes sandwiching both sides of the stacked fins 32; a plurality of hairpin-shaped heat transfer tubes 34 horizontally inserted through the through holes and the insertion holes;
And a connecting pipe 35 that connects the upper and lower ends of the opening end in order, and is vertically arranged facing the suction port 25 on the front surface of the main body. However, when the heat exchanger 29 is dehumidified, the water droplets 37 adsorbed on the connecting portion of the opening end of the heat transfer tube 34 are scattered and do not fall on the dew tray 31 and wet the inside of the indoor unit, adhere to dust, and rot. There are problems such as generation of off-flavors. Fig. 5
As shown in (1), a scatter prevention device 36 made of a resin molded product or the like having a ring connected up and down is attached to the connecting portion of the heat transfer tube 34 to prevent scatter. However, the use of dedicated parts increases the number of parts and the number of man-hours, causing a problem of disadvantage in cost.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in order to prevent water droplets adhering to a connecting portion of a heat transfer tube from scattering, a dedicated component is not used. An object of the present invention is to provide a heat exchanger that can reduce the number of work steps and is advantageous in cost.

[0004]

The present invention has been made to solve the above problems, and has a plurality of fins having a plurality of through holes and stacked in parallel at predetermined intervals, and a plurality of fins sandwiching both sides of the stacked fins. A side plate having an insertion hole, a plurality of hairpin-shaped heat transfer tubes inserted horizontally through the through-hole and the insertion hole, and a connection tube connecting the upper and lower ends of the open ends of the heat transfer tubes in order; In the heat exchanger vertically arranged facing the suction port, a water guide piece projecting vertically between the heat transfer tubes of the side plate is formed.

[0005] Further, the water guide piece is formed by cutting and raising. Further, the water guide piece is formed at right angles to the surface of the side plate. Further, the water guide piece is formed in a rectangular shape. Further, a plurality of the water guide pieces are formed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS By forming a water guide piece projecting vertically between the heat transfer pipes of the side plates, water droplets adhering to the connecting portion of the heat transfer pipe flow and diffuse along the heat transfer pipe and the water guide piece. In addition, the heat exchanger can be dropped and removed from the dew tray without scattering from the lower end of the side plate, and the number of parts and the number of working steps can be reduced without using a dedicated part.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchanger for an air conditioner according to the present invention will be described below with reference to FIGS. FIG. 1 is a side view of a central portion of an indoor unit main body.
Is composed of a base 2, a front cover 3 detachably mounted on the base 2, and a front panel 4 attached to the front cover 3 so as to be openable and closable. The front panel 4 is provided with a suction port 5 for taking in room air, and a lower part of the front surface is formed with a blowout port 6 for sending out heat-exchanged air into the room. An air filter 8, a heat exchanger 9, and a blower (cross flow fan) 10 are arranged in an air passage 7 connecting the suction port 5 and the outlet 6, and the air that has been heat-exchanged by the heat exchanger 9 is blown by the blower 10. To the outlet 6. Further, the lower part of the heat exchanger 29 has a configuration in which the dew tray 11 for receiving defrost water is arranged.

FIG. 2 is a perspective view of a heat exchanger according to the present invention.
The heat exchanger 9 has a plurality of through holes, a plurality of fins 12 stacked in parallel at predetermined intervals, a side plate 13 having a plurality of insertion holes sandwiching both sides of the stacked fins 12, the through hole, It comprises a plurality of hairpin-shaped heat transfer tubes 14 that are horizontally inserted through the insertion holes, and a connection tube 15 that sequentially connects the upper and lower ends of the open ends of the heat transfer tubes 14, and is vertically arranged facing the suction port 5 on the front surface of the main body. Have been. A water guide piece 16 is formed on the side plate 13 by cutting and protruding outward, and the water guide piece 16 is attached to the heat transfer tube.
It is cut and raised in the vertical direction at right angles to the surface of the side plate during 14 and formed in a rectangular shape.

With the above structure, the water droplets 17 adhering to the connecting portion of the heat transfer tube 14 at the time of dehumidification and the like flow and diffuse along the heat transfer tube 14 and the water guide piece 16, and do not fly from the lower end of the side plate 13 to the exposure tray 11. The heat exchanger can be dropped and removed, without using dedicated parts, the number of parts and the number of working steps can be reduced, and the heat exchanger is advantageous in cost.

[0010]

As described above, in the present invention, the water droplets adhering to the connecting portion of the heat transfer tube flow and diffuse along the heat transfer tube and the water guide piece, and fall to the dew tray without being scattered from the lower end of the side plate. It is possible to reduce the number of parts and the number of work steps without using special parts, and to obtain a heat exchanger which is advantageous in cost.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an air conditioner according to the present invention.

FIGS. 2A and 2B are perspective views showing one embodiment of the present invention, wherein FIG. 2A is a perspective view of a main part of a heat exchanger, and FIG.

FIG. 3 is a side sectional view of an air conditioner according to a conventional example.

FIG. 4 is a perspective view of a main part of a conventional heat exchanger.

FIG. 5 is a sectional view of a main part of a conventional heat exchanger.

[Explanation of symbols]

 1 Indoor unit body 5 Suction port 6 Blow-out port 9 Heat exchanger 11 Dew tray 12 Fin 13 Side plate 14 Heat transfer tube 15 Connecting pipe 16 Water guide piece (cut and raised) 17 Water drop

Claims (5)

[Claims] A plurality of fins having a plurality of through holes and stacked in parallel at a predetermined interval; a side plate having a plurality of insertion holes sandwiching both sides of the stacked fins; A plurality of hairpin-shaped heat transfer tubes inserted horizontally,
In a heat exchanger comprising connecting pipes for sequentially connecting the upper and lower ends of the opening ends of these heat transfer tubes and vertically arranged facing the suction port on the front surface of the main body, a water guide piece vertically projecting between the heat transfer tubes of the side plate. The heat exchanger characterized by forming. 2. The heat exchanger according to claim 1, wherein the water guide pieces are formed by cutting and raising. 3. The heat exchanger according to claim 1, wherein the water guide piece is formed at right angles to a surface of the side plate. 4. The heat exchanger according to claim 1, wherein the water guide piece is formed in a rectangular shape. 5. The method according to claim 1, wherein a plurality of the water guide pieces are formed.
The heat exchanger as described.