JPH09145145A - Heat exchanger for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a claw at one of connector plates to be overlapped to each other, form a hole at the other connector plate to which this claw is engaged, connect both heat exchangers by small screws and facilitate an assembling work within a short period of time after performing a temporary fixing of the claw in the hole. SOLUTION: Connecting plates 18 and 19 are projected from a front side heat exchanger 14 and a rear side heat exchanger 15. Small screws 21 are thredably inserted into some small screw holes formed at connecting plates to be overlapped to each other to connect them. Although prior to this connection, a lateral claw 22 formed at one connecting plate of the right and left side projecting connection plates 18, 19 of a heat exchanger is fitted to a lateral hole 24 formed at a corresponding connector plate. Similarly, a vertical claw 23 connected to the other connecting plate of the right and left side connecting plates is fitted to a vertical hole 25 of a corresponding connection plate. With such an arrangement as above, a connection with the small screws 21 is carried out after performing a temporary fitting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact air conditioner for home use, for example, and more particularly to a heat exchanger assembly structure constituting the air conditioner.

[0002]

2. Description of the Related Art Generally, an air conditioner comprises an outdoor unit and an indoor unit. The outdoor unit takes in outside air with a fan and exchanges heat between the outside air and the refrigerant in the heat exchanger. The refrigerant cooled and compressed by the outside air is sent to the indoor unit. In the indoor unit, indoor air is taken in by a fan and heat is exchanged between the air and the refrigerant in the heat exchanger. The cooled air blows out as cold air into the room. In the indoor unit of this air conditioner, a cross flow fan is generally used.
The cross-flow fan has a large number of elongated blades arranged in a circle with their longitudinal directions parallel to each other, and has a cylindrical shape as a whole. This cylindrical cross-flow fan rotates around a rotation axis that runs around the center of the cylinder.

A heat exchanger 51 as shown in FIG. 5 is attached to a flow path of air in the room that takes in the cross flow fan. In the heat exchanger 51, for example, a front heat exchanger 52 arranged on the front side of the cross flow fan and a rear heat exchanger 53 arranged on the rear side are connected to each other, and the connecting portion has a bent shape in a cross section. The cross flow fan is arranged so as to surround it. In particular, the indoor unit of the energy-saving air conditioner requires a large-capacity heat exchanger in order to efficiently perform heat exchange. However, it becomes a shape that surrounds the circumference of the cross flow fan, and the entire shape becomes complicated.

When assembling a heat exchanger having a complicated shape, a connecting plate formed at a predetermined angle is used so that the bending angle becomes a predetermined angle. The connecting plates are provided on both heat exchangers so as to project from each other, and these are overlapped and connected by screws. The assembly of the heat exchanger connected by the screws is usually performed in a production line, and as described above, the front heat exchanger and the rear heat exchanger are maintained in a predetermined bending state, and a plurality of screws are used. It is done by connecting.

[0005]

However, in the manufacturing line, when the heat exchanger has a complicated shape, it is necessary to maintain the bent state of the heat exchanger at a predetermined angle and to connect the heat exchanger with screws. It becomes extremely difficult and time is required for connection work. Therefore, a procedure is taken in which the heat exchanger is once removed from the production line, the connection, that is, the heat exchanger is assembled outside the production line, and then the assembled heat exchanger is returned to the production line.

[0006] Therefore, an object of the present invention is to provide a heat exchanger for an air conditioner which eliminates such a procedure and facilitates assembly in a short time.

[0007]

In order to achieve the above object, the invention according to claim 1 is a heat exchanger provided inside an air conditioner, wherein a plurality of heat exchanger parts are connected. In the heat exchanger of the air conditioner having a cross section bent at the connecting portion, a connecting plate is provided at each heat exchanger portion so that the bending is performed at a predetermined angle to perform the connection. A claw is formed on one of the connecting plates that are projected and overlap each other, and a hole to be fitted into this claw is formed on the other side. After the claw is fitted into this hole and temporarily fixed, both It is characterized in that the heat exchanger parts are connected by screws.

According to a second aspect of the present invention, there is provided a heat exchanger provided inside an air conditioner, wherein a plurality of heat exchanger portions are connected to each other, and a cross section thereof is bent at the connecting portion. In the heat exchanger of the air conditioner, a connecting plate is projectingly provided on each heat exchanger portion so that the bending is performed at a predetermined angle and the connecting is performed, and the connecting plates that overlap each other have a claw and a hole. A vertical claw and a horizontal claw and a lateral hole, which are connected by fitting and are laterally fitted to each other, are formed on a connecting plate projecting at the left end or the right end of the heat exchanger, and the longitudinal fitting is performed. A vertical hole is formed in a connecting plate protruding from the right end or the left end of the heat exchanger, and after fitting and temporarily fixing them, both heat exchanger parts are connected by screws to manufacture. It is a thing.

According to these inventions, after the claws and the holes are fitted and temporarily fixed, both heat exchanger parts are connected by screws for manufacturing, so that both temporary fixing and manufacturing are performed on the manufacturing line. Assembling is easy because it can be performed.

[0010]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 2 shows an indoor unit of the air conditioner according to this embodiment. The indoor unit 1 has a structure to be attached to the wall inside the room. In the main body frame 2 of the indoor unit 1, a heat exchanger 3, a blower 4, an auxiliary heater (not shown),
A control unit (not shown) that controls these is housed.

A front panel 5 is attached to the frame 2, and a suction port 6 is formed on the front surface of the front panel 5. A filter 7 is arranged inside the suction port 6. An outlet 8 is formed on the lower side of the front panel 5, and the outlet 8 is provided with a vertical guide vane 9 for guiding the air blowing direction and a horizontal guide vane 11. The blower 4 is composed of a long cylindrical cross flow fan 12 rotated by a motor (not shown) and an air guide plate 13 for guiding the air blown by the cross flow fan 12.
The air guide plate 13 constitutes a part of the frame 2.

The cross-flow fan 12 in this embodiment has a cylindrical shape as a whole, and is provided with the axis of the cylinder lying sideways. The heat exchanger 3 is attached to the flow path of the air in the room taken in by the cross flow fan 12.

The heat exchanger 3 is formed by connecting a front heat exchanger 14 and a rear heat exchanger 15 which are bent in a dogleg shape, and a cross section thereof is bent at the connecting portion.
It is placed so as to surround the circumference of. These front heat exchangers 1
4 and the rear heat exchanger 15, the refrigerant pipe 17 penetrates in a meandering manner into the heat transfer fins 16 in which a large number of sheets are arranged in order, and the whole is formed in a box shape.

From the box-shaped heat exchangers 14 and 15,
Connecting plates 18 and 19 are provided on the left and right sides so as to project. The connecting plates 18 and 19 are formed in such a shape that the bending is performed at a predetermined angle. And, for example, the front heat exchanger 1
The left connecting plate 18 of 4 is the left connecting plate 1 of the rear heat exchanger 15.
9 (FIG. 1 (B)). Similarly, the right connecting plate 18 of the front heat exchanger 14 is connected to the right connecting plate 19 of the rear heat exchanger 15.
(Fig. 1 (C)). Screw holes are formed in the overlapping connecting plates 18 and 19, and screws 21 are screwed therein. In addition, the connection plates 19 and 18 are formed with pawls 22 and 23 and holes 24 and 25 for temporary fixing prior to connection. That is, the connection plate 19 at the left end in the figure of the rear heat exchanger 15
A lateral claw 22 is formed on the front side of the front heat exchanger 14, and a lateral hole 24 is formed on the connecting plate 18 at the left end of the front heat exchanger 14 (FIG. 3B). A pair of the lateral claw 22 and the lateral hole 24 is provided. This lateral claw 22 moves laterally to move the lateral hole 2
4 is fitted. The lateral hole 24 is formed at the base of the left connecting plate 18.

Further, the connecting plate 1 at the right end of the rear heat exchanger 15
Vertical claws 23 are formed on the plate 9 (FIG. 4C), and vertical holes 25 are formed on the corresponding connecting plate 18 at the right end of the front heat exchanger 14 (FIG. 3C). A pair of vertical claw 23 and vertical hole 25 is formed. The vertical claw 23 moves in the vertical direction to fit into the vertical hole 25. The vertical hole 25 is formed at the base of the right connecting plate 18. However, it is also possible to form the horizontal holes 24 and the vertical holes 25 in the main body of the front heat exchanger 14 instead of in the connecting plate 18.

The refrigerant pipe 17 at the right end of the rear heat exchanger 15 has two open ends 17a and 17b for connecting to the refrigerant pipe 17 of the front heat exchanger 14. The refrigerant pipe 17 at the right end of the front heat exchanger 14 has an opening end 17 for connection with the refrigerant pipe 17 of the rear heat exchanger 15.
c, 17d and open end portions 17e, 17f for connecting to the refrigerant pipe 20 to the outdoor unit are provided. The refrigerant pipe 20 is covered with a heat insulating material 20a.

The assembly of the heat exchanger 3 will be described below. The front heat exchanger 14 and the rear heat exchanger 15 are assembled by an assembling operator on the manufacturing line. First, connecting plates 18, 19 protruding from both heat exchangers 14, 15 with both heat exchangers 14, 15 left on the manufacturing line.
Are stacked with the connecting plates on the left end, and with the connecting plates on the right end. At this time, the lateral claws 22 formed on the left end connecting plates 18 and 19 are moved in the lateral direction and fitted into the lateral holes 24. Then, the vertical claw 23 formed on the left end connecting plates 18 and 19 is fitted into the vertical hole 25. By this fitting, temporary fixing is performed, and both heat exchangers 14 and 15 can maintain a certain degree of strength in the vertical and horizontal directions. In this state, the screws 21 are screwed into and fixed in the screw holes of the connecting plates 18 and 19 that are stacked. Since the temporary fixing can be performed in this manner, the connection by the screw 21 can be performed in a short time. Because it can be done in a short time,
There is no need to remove the heat exchangers 14 and 15 from the manufacturing line once for the purpose of connection as in the conventional case. Therefore, the assembly work becomes easy.

Although the present invention has been described based on the embodiment, it is obvious that the present invention is not limited to this. For example, in the above embodiment, the nail 2
2, 23 and holes 24, 25 were formed in the connecting plates 18, 19, but in another embodiment, a metal member that gathers together the main bodies of the heat exchangers 14, 15 or the heat transfer fins 16. It is also possible to form it into Further, in the above embodiment, the plurality of heat exchanger parts constituting the heat exchanger 3 are the front heat exchanger 14 and the rear heat exchanger 15, but in other embodiments, three or more heat exchangers. The entire heat exchanger may be configured from the vessel portion.

Further, in the above-described embodiment, the pawl is provided with the lateral pawl 22 and the vertical pawl 23, but in other embodiments, the right pawl and the left end have only the lateral pawl 22 or the vertical pawl 23. Only one may be provided.

[0020]

According to the present invention, the claws formed on one of the front heat exchanger and the rear heat exchanger that constitute the heat exchanger are fitted into the holes formed in the other and temporarily Since the connection is made with screws after being stopped, it is easy to maintain the predetermined angle of bending by temporary fixing, and therefore the connection can be done without lowering it from the production line. Therefore, the assembly is easy and the time is short. It will be. Further, when stacking the connecting plates protruding from the heat exchanger, the horizontal claws formed on the connecting plates protruding from the left end or the right end of the heat exchanger are fitted into the horizontal holes, and the right end of the heat exchanger or By fitting the vertical claw formed on the connecting plate projecting at the left end into the vertical hole, temporary fixing can be performed in the left and right and up and down directions, and then the overlapping connecting plates are formed. By connecting with screws through the screw holes, stable assembly work can be done easily.

[Brief description of the drawings]

FIG. 1 is an overall view of a heat exchanger according to an embodiment of the present invention, (A) is a front view, (B) is a left side view of (A),
(C) is a right side view of (A).

2 is a cross-sectional view of an indoor unit of an air conditioner to which the heat exchanger of FIG. 1 is attached.

3 is a diagram showing a front heat exchanger constituting the heat exchanger of FIG. 1, (A) is a front view, (B) is a left side view of (A), and (C) is (A). FIG.

4A and 4B are views showing a rear heat exchanger constituting the heat exchanger of FIG. 1, where FIG. 4A is a front view, FIG. 4B is a left side view of FIG. A, and FIG. It is a right side view.

FIG. 5 is an overall view showing a conventional heat exchanger, (A) is a front view, (B) is a left side view of (A), and (C) is a right side view of (A).

[Explanation of symbols]

 1 Indoor Unit 3 Heat Exchanger 12 Cross Flow Fan 14 Front Heat Exchanger 15 Rear Heat Exchanger 16 Heat Transfer Fin 17 Refrigerant Piping 18, 19 Connecting Plate 21 Screw 22 Horizontal Claw 23 Vertical Claw 24 Horizontal Hole 25 Vertical Hole

Front Page Continuation (72) Inventor Mitsuyoshi Uchiyama 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A heat exchanger provided inside an air conditioner, which is formed by connecting a plurality of heat exchanger parts,
In a heat exchanger of an air conditioner having a cross-sectionally bent shape at a connecting portion, each heat exchanger portion is provided with a connecting plate projecting so that the bending is performed at a predetermined angle to perform connection. A claw is formed on one of the connecting plates that overlap each other, and a hole to be fitted into this claw is formed on the other side. After the claw is fitted into this hole and temporarily fixed, both heat exchanger parts A heat exchanger for an air conditioner, which is manufactured by connecting with a screw. 2. A heat exchanger provided inside an air conditioner, the heat exchanger being formed by connecting a plurality of heat exchanger parts,
In a heat exchanger of an air conditioner having a cross-sectionally bent shape at a connecting portion, each heat exchanger portion is provided with a connecting plate projecting so that the bending is performed at a predetermined angle to perform connection. The connecting plates that overlap each other are connected by fitting the claws and the holes, and the horizontal claws and the horizontal holes for performing the fitting in the lateral direction are formed on the connecting plate protruding from the left end or the right end of the heat exchanger, Vertical claws and vertical holes are formed on the connecting plate protruding from the right end or the left end of the heat exchanger, and after fitting and temporarily fixing them, both heat exchanger parts are screwed together. A heat exchanger for an air conditioner, which is manufactured by connecting them.