JP3086623B2 - 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 provided with an electric box in which electric control parts are arranged.

[0002]

2. Description of the Related Art As a technique of an air conditioner incorporating a synthetic resin electrical box, there is one proposed by the present applicant in Japanese Patent Application No. 6-81682. The air conditioner described in this application has a configuration in which a printed circuit board on which electric components are arranged is inserted and arranged in a box-shaped electric box having an open front surface.

[0003]

The air conditioner described above has a printed circuit board on which electric components for controlling the operation of the air conditioner are arranged, and an electric box for holding the electric circuit board. This has been a factor in cost increase and the size of the electrical box has been large.

An example in which electrical components are arranged directly on an electrical box in order to eliminate such a drawback is disclosed in, for example, Japanese Utility Model Publication No. 53-5.
No. 4371, Japanese Utility Model Publication No. 61-20432, and Japanese Utility Model Publication No. 3-30740. In the electrical box of the air conditioner described in these publications, the electrical component for control of the air conditioner is directly attached to an electrical box formed in a box shape in advance. In such an electrical component, since the electrical component is arranged in an electrical box formed in a box shape in advance, it is difficult to arrange the electrical component by a machine,
There is a drawback that the manufacturing cost is increased because the placement work must be performed by a human. Mechanization is not impossible at all, but requires expensive machinery, which results in high manufacturing costs.

[0005] The present invention provides an air conditioner provided with an electrical component box whose production cost is low.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an air conditioner having an electric box for storing electric parts for control, wherein the electric box is provided with a plurality of independent synthetic resin. The circuit patterns are integrally formed on these boards, and electrical components connected to the circuit patterns are arranged on the boards. Adjacent ends of these boards are connected by a press pattern.

[0007]

[0008]

[0009]

According to the present invention, the electrical box for housing electrical components for controlling the operation of the air conditioner is composed of a plurality of independent synthetic resin plates, on which circuit patterns are integrally formed. Since the electrical components connected to this circuit pattern are arranged and the adjacent ends of these plates are connected by a press pattern, the electrical components are easy to assemble, to facilitate the mechanization, and to simplify the manufacturing.

[0010]

[0011]

An embodiment of the present invention will be described with reference to the drawings.
1 shown in FIG. 1 is an indoor unit of the air conditioner of the present invention, which is connected to an outdoor unit (not shown) by a refrigerant pipe and wiring between units. The indoor unit is installed on an indoor wall. Reference numeral 2 denotes a suction port for indoor air, 3 denotes an air outlet heated or cooled by a heat exchanger, 4 denotes a wind direction changing blade for changing a blowing direction in a vertical direction, and 5 denotes a display unit for indicating an operation state. 6 heats the sucked air
A heat exchanger 7 for cooling is an electrical box in which electrical components for controlling the operation of the air conditioner are arranged. still,
The blower fan is not shown because it is positioned diagonally below the rear side of the heat exchanger and overlaps.

FIG. 2 shows 10A, 10B, 10C and 10C.
D and 10E are flat plates made of synthetic resin, on which a circuit pattern is integrally formed, and a transformer 11 and 10E.
Power relay 12, control board 13, terminal board 14
And other electrical components are arranged and soldered. Fifteen
A, 15B, 15C, and 15D are press patterns that connect the flat plate 10A with the flat plates 10B, 10C, 10D, and 10E and that electrically connect the flat plates 10B, 10C, 10D, and 10E.
In addition, as needed, the structure which connects the end part 16A, the end part 16B, the end part 16C, the end part 16D, the end part 16E, the end part 16F, the end part 16G, and the end part 16H (for example,
A notch and an engagement piece that fits into the notch, or a hole and a projection that fits into the hole may be provided. It is desirable to provide this configuration because a box-like shape is maintained. Also, by providing the notch 10F, the electrical box 7
After assembling, the connection of the unit tube wiring 19 can be facilitated.

FIG. 3 is an explanatory view showing a case where the electric box is assembled and viewed from the side. The seven electric box is formed in a box shape with an open front. FIG. 4 shows a main part of an electric circuit used for an air conditioner (indoor unit). Reference numeral 20 enclosed by a dotted line indicates electric parts arranged on the flat plate 10A of the electric box 7. The remaining electrical components are arranged on another synthetic resin plate (for example, flat plates 10B, 10C, 10D, and 10E). And the assembled electrical box is
Installed in the indoor unit of the air conditioner. The terminal plate 14 is for connecting to an outdoor unit by a three-core unit wiring 19. The control board 13 is composed of electrical components such as a microcomputer, for example. Reference numeral 21 denotes a power plug inserted into an outlet to supply power, 22 denotes a power switch, 12 denotes a power relay, and 23 denotes the wind direction changing blade 4.
, A motor for driving a fan (not shown), a condenser for a fan motor, a room temperature sensor, a heat exchange temperature sensor for detecting the temperature of the heat exchanger, and a display The substrate 11 is a power transformer. 29 is a power fuse, 30 is a ground wire, 3
1 is an HA terminal.

The electrical component box 7 configured as described above is smaller and lighter than the conventional one, and is further reduced in price. Next, this point will be described.

[0015] As for an electrical box incorporated in a conventional air conditioner, one having an open front is generally used (the front may also be covered with a cover if necessary). This is configured in a box shape with both side plates, a top surface, a lower surface, and a back plate. Since the electrical box is incorporated in a gap of an air conditioner (an indoor unit or an outdoor unit), the synthetic resin plate is not necessarily flat. In the electrical box, for example, two printed boards on which electrical components are arranged are arranged. Therefore, the conventional electrical box becomes a large box so as to cover two electrical boards,
The electrical box had large dimensions and space.

On the other hand, in the electrical box of the present invention, since the board (side surface) constituting the electrical box is also used as a printed board, there is no need for a printed board to be disposed therein, and thus the size is reduced. In addition, the weight has been reduced. In addition, since there is no conventional printed circuit board, only a small number of component materials are used, and assembly is only required to be performed in the form of a box. Therefore, the manufacturing (assembly) cost and component cost can be reduced.

Moreover, since the synthetic resin plates constituting the electrical box of the present invention are independent, it is easy to mount electrical components separately, and the assembly of the electrical box is easy to mechanize.
Easy to assemble.

When the maintenance of the electrical components is performed, the electrical component box 7 is removed from the indoor unit 1. In this case, since all the electrical components arranged in the electrical box 7 are pulled out, maintenance can be performed on all the electrical components arranged in the electrical box.

Further, by forming the electric box 7 integrally with the electric parts, each electric part can be directly attached to a plate (synthetic resin plate) constituting the electric box. Eliminates the need for connecting wires. In addition, the shape of the electrical box can be simplified.

In this embodiment, since the electric components are arranged so as to be located inside the electric box, the portion to be soldered is located on the outer surface side. For this reason, place an insulating sheet so that the soldered part does not short-circuit,
It may be insulated.

FIG. 5 shows an electric circuit diagram of the outdoor unit.
Are electrical components arranged in one resin electrical box. Depending on the number, size, weight, and the like of the electrical components, these electrical components may be separately arranged on an electrical board and incorporated in the electrical box, or may be arranged near the outside of the electrical box. Absent. However, as far as possible, it is desirable to dispose it on a synthetic resin plate constituting the electrical component box. 5
1 is a power supply filter board, 52 is a terminal board for connecting with wiring between indoor unit discharge units, 53 is a reactor, 54 is a diode, 55 is a control board, 56 is a thermistor for detecting compressor temperature, and 57 is an outdoor heat exchanger. A fan motor for driving an outdoor blower for supplying outdoor air; 58, a solenoid valve; 59, a four-way valve for switching between cooling and heating operations; 60, a thermistor for detecting outside air temperature;
61 is a thermistor for detecting the temperature of the outdoor heat exchanger, 62 is a fan motor for driving the outdoor blower,
63 is a ground wire, 64 is a fan motor capacitor, 6
Reference numeral 5 denotes a transistor for controlling the compressor 66. In this manner, the electric components for the outdoor unit may be arranged on the synthetic resin plate constituting the electric box and incorporated into an outdoor unit (not shown).

In this embodiment, an example in which the plate constituting the electrical box is a flat plate has been described.
The plate constituting the electrical box is not limited to a flat plate, and the shape of the plate may be changed depending on the relationship with components inside the air conditioner. However, the outdoor unit, which has relatively more space than the indoor unit, can easily use more flat plates, simplify the structure, and reduce the manufacturing cost and the assembly cost.

[0023]

According to the present invention, the electrical box for housing the electrical components for controlling the operation of the air conditioner is composed of a plurality of independent synthetic resin plates, on which circuit patterns are integrally formed. In addition, since the electrical components connected to the circuit pattern are arranged and the adjacent ends of these plates are connected by a press pattern, the electrical components are easy to assemble, to facilitate the mechanization, and to simplify the manufacturing. As a result, it is possible to reduce the size, weight, and cost of the air conditioner provided with the electric component box.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an air conditioner of the present invention.

FIG. 2 is a perspective view of a main part of an electric component box incorporated in the air conditioner.

FIG. 3 is an explanatory view of the electrical component box as viewed from a side.

FIG. 4 is a circuit diagram showing electrical components of the indoor unit arranged in the electrical component box.

FIG. 5 is a circuit diagram showing electrical components of the outdoor unit arranged in the electrical box.

[Explanation of symbols]

 7 electrical box 12 power relay (electrical parts) 14 terminal board (electrical parts) 13 control board (electrical parts) 11 transformer (electrical parts) 10A synthetic resin plate (plate) 10B synthetic resin plate (plate) 10C synthetic resin plate (plate) ) 10D synthetic resin plate (plate) 10E synthetic resin plate (plate) 15A press pattern 15B press pattern 15C press pattern 15D press pattern

Claims (1)

(57) [Claims] 1. An air conditioner having an electric box for storing electric parts for control, wherein the electric box is provided with a plurality of independent electric boxes.
Composed of synthetic resin plates,
Turns are formed integrally and connected to this circuit pattern.
Adjacent electrical components are located and adjacent ends of these plates
Comrades are connected by a press pattern .