JP3228623B2 - Air conditioner controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for supplying and controlling electric power to an outdoor unit of an air conditioner, and more particularly to a controller for an air conditioner which simplifies wiring and reduces an occupied space. .

[0002]

2. Description of the Related Art Some air conditioners are provided with an outdoor unit placed outdoors, and a controller is provided in the room to supply power to the outdoor unit. Although the controller is interposed between the power supply source and the outdoor unit, it can control whether to supply power to the outdoor unit as well as simply connect the power supply source and the outdoor unit. In order to perform this control, the controller is provided with a printed wiring board having a power relay and a control circuit,
A connector for connecting a cable is provided. In order to prevent a fire from occurring due to a failure of the outdoor unit, the controller may be provided with a thermal fuse for detecting overheating of the power supply line to the outdoor unit.

[0003] As shown in FIG. 7, a circuit configuration of a conventional controller includes a power plug 15 inserted into an indoor outlet.
A switch 71 connected to the indoor cable 16 drawn from the power plug 15 into the controller, a main board 72 on which a control circuit and a wiring connector are mounted, and an outdoor unit mounted on the main board 72 and connected to the outdoor unit. And a plurality of thermal fuses 75 arranged to respond to overheating of the SL connector 74 and the indoor fan, and a SL connector 74 for connecting a cable to the outdoor unit. The above-described components except for the power plug 15 are appropriately arranged in the casing of the controller.

As shown in FIG. 8, a relay 73, SL
The connector 74 and the thermal fuse 75 are composed of independent components, respectively. The arrangement is such that the relay 73 is on the main board 72, the SL connector 74 is in the electric component box 76,
Thermal fuses 75 are located at various locations near the main board surface. Also, as shown in FIG. 7, the wiring connecting the components is made by connecting the switch 71 to the connector of the main board 72 and the relay 73, the SL connector 74 to the connector of the main board 72 and the relay 73, To the connector of the main board 72.

[0005]

When a conventional controller is manufactured, wiring between components is complicated because the wiring is diversified, and the wiring is apt to be troublesome and erroneous. Also, since there are many lead wires, the amount of electric wires used is large, and the man-hour for mounting the lead wires is also large.

Further, the conventional controller occupies a large space due to the fact that the components are independent and the wiring is diversified. This is an obstacle to miniaturization.

It is an object of the present invention to solve the above problems, to provide a controller for an air conditioner that simplifies wiring and reduces the occupied space.

[0008]

According to the present invention, a structure having a power supply terminal for connecting to a power supply is formed in a substantially prismatic shape, and the structure is provided on the bottom surface of the structure.
Providing board connection terminals and passing power to the outdoor unit through this structure
Mounted on a printed circuit board with a control circuit to control whether or not
Then, the power supply terminal is provided on the side surface of the structure, and the structure is provided with the contact and the control circuit to the board connection terminal.
A coil that opens and closes the contacts with the applied drive current is incorporated, and an inside / outside connector for connecting to the outdoor unit is formed, and one of the contacts is connected to the power terminal and the other is connected to the terminal of the inside / outside connector. It is a thing. Up
The internal / external connector is a board connection terminal used for signal lines.
Equipped with three insertion holes to fill terminals including terminals connected to
You may get. Cable from the outdoor unit on the top of the above structure
A fixing cord clamp may be formed.

[0009] The present invention also provides an electric power source for an outdoor unit of an air conditioner.
Installed between the power supply and the outdoor unit to control the power supply.
Connected to a power supply.
A contact with a structure having a power supply terminal and opening and closing of the contact
Inside and outside for installing coils and connecting to outdoor units
Mold the connector and connect one of the contacts to the power terminal
And the other to the terminal of the internal / external connector.
And the room responds to the temperature of the internal / external connector side.
Set a thermal fuse to stop power supply to the external unit.
It is something that has been incorporated.

[0010]

According to the above configuration, the power supply terminal can be connected to the power supply source. The inside / outside connection connector can be connected to the outdoor unit. The contacts and coils function as relays. Since the power supply terminal is electrically connected to one of the contacts and the terminal of the inside / outside connector is electrically connected to the other of the contacts, the coil can open and close the contacts, so that the power supply source and the outdoor unit can be switched on and off.

Since the relay consisting of the contact and the coil is incorporated in the structure, the internal / external connection connector is formed in the structure, and the thermal fuse is also incorporated in the structure.
The component composed of this structure can be treated as an integrated composite component having a composite function. Therefore, it is not necessary to connect each component by wiring, and wiring is simplified. Further, the occupied space is reduced by integrating the components.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 2 shows the structure of a composite part used in the controller of the air conditioner of the present invention, and FIG. 1 shows the circuit. As shown in FIG. 2, the composite component 1 is integrally formed by one structure 2. The structure 2 is formed in a substantially prismatic shape, and has flanges 3 protruding from both side surfaces. The flange 3 has a mounting hole 4 for fixing the structure 2 itself to an electric component box (not shown). Further, between the flanges 3, an internal / external connection connector (socket) 5 is formed on the structure 2. Internal / external connector 5 is 2
Each of the insertion holes 6 has a terminal 12 embedded therein. A cord clamp 7 for fixing a cable from an outdoor unit to the structure 2 is formed on the upper surface of the structure. Two power supply terminals 8 capable of faston connection are provided on the side surface of the structure 2. On the bottom of the structure 2,
Four board connection terminals 9 for mounting on a printed board are provided. Inside the structure 2, a contact, a coil for opening and closing the contact, a thermal fuse, and a conductor for interconnecting these are incorporated. Although not shown, the thermal fuse is arranged close to the conductor on the internal / external connector side.

The composite component 1 shown in FIG. 3 is slightly different from that described with reference to FIG. 2 in that the internal / external connector 5 has three insertion holes 6, and one insertion hole 6 is a spare terminal. It is for business. The composite component 1 can be handled as an integral component, and can be used as it is mounted on a printed circuit board.

As shown in FIG. 1, two contacts 10 in the composite part 1 are provided, and are configured to be opened and closed in conjunction with a coil 11. Two power terminals 8a, 8
b is connected to one of the contacts 10a and 10b by a conductor, and is conductive. The power terminals 8a and 8b and the contacts 10a and 10b are connected to the board connection terminals 9a and 9b. The other of the contacts 10a and 10b is connected to the terminals 12a and 12b of the internal / external connector 5 by conductors, respectively, and is conductive. The board connection terminal 9c is a coil 11
The other end of the coil 11 is connected to the thermal fuse 1
3, and the other end of the thermal fuse 13 is connected to the board connection terminal 9d. Thus, in this embodiment, the coil 11 and the thermal fuse 13 are provided in series.

FIG. 4 shows a part of the controller. The composite component 1 is mounted on a main board 14 housed in a controller. On the other hand, since the composite component 1 is fixed to the electrical component box using the mounting holes 4, the main board 14
Will be supported via the composite part 1. The main board 14 has a control circuit (not shown) for controlling whether to supply power to the outdoor unit. This control circuit can obtain electric power from the board connection terminals 9a and 9b of the composite component 1, and can supply a coil drive current to the board connection terminals 9c and 9d. The indoor cable 16 drawn into the controller from the power plug 15 inserted into the indoor outlet is terminated at a Faston terminal (not shown), and the Faston terminal is connected to the power terminals 8a and 8b of the composite component 1. . The cable drawn into the controller from the outdoor unit is terminated at the inside / outside connection connector (plug). This plug is inserted into the inside / outside connection connector 5 of the composite component 1 and the cable is fixed by the cord clamp 7 before use. . In the case of FIG. 4, a board connection terminal 9e is provided, and this board connection terminal 9e can be used for a signal line.

Next, the operation of the embodiment will be described.

When the power plug 15 is inserted into the indoor outlet, the indoor cable 16, the power terminal 8, the board connection terminal 9
, Power is supplied to the main board 14. The control circuit of the main board 14 starts the control. When the power supply to the outdoor unit is determined, the board connection terminals 9c, 9
A coil drive current is applied between d and the contact 10 is closed by the bias of the coil 11. When the contact 10 is closed, a power line is formed from the conductor on the power terminal side to the conductor on the internal / external connector side via the contact 10.
As a result, electric power is supplied from the indoor outlet to the outdoor unit.

During operation of the outdoor unit, a current may flow more than normally required due to a failure or the like. In that case, the temperature of the conductor forming the power supply line increases. The thermal fuse 13 close to the conductor on the side of the internal / external connector responds to the increased temperature and cuts off the coil drive current. When the coil drive current is cut off, the energization by the coil 11 is canceled and the contact 10 is opened. When the contact 10 is opened, power supply to the outdoor unit is cut off, and the outdoor unit stops. In this embodiment, since the thermal fuse 13 is inserted in series with the coil 11, the thermal fuse 13 can be commonly used for both the inverter air conditioner and the general heat pump.

In the composite part 1 of the controller of the present invention,
A relay consisting of a contact 10 and a coil 11, an internal / external connector 5, and a thermal fuse 13 are integrated. In manufacturing the controller, it is only necessary to attach the faston terminal of the indoor cable 16 to the power supply terminal 8, there is no need for troublesome wiring work and no risk of erroneous wiring, the amount of electric wires used is reduced, and the number of wiring steps is reduced. In addition, the use of the composite component 1 reduces the space occupied in the controller.

Another embodiment will be described.

The difference between FIG. 5 and FIG. 1 is that the internal / external connection connector 5 is provided with an internal / external communication terminal 12d, and a temperature fuse 13 is provided between the internal / external communication terminal 12d and the board connection terminal 9e. It is. As shown in FIG. 6, the inside / outside connection connector 5 has three insertion holes 6, in which the power supply terminals 12a and 12b and the inside / outside communication terminal 12d are buried. I have. In this embodiment, an indoor / outdoor communication circuit is formed between the controller and the outdoor unit. When the thermal fuse 13 operates, the internal / external communication circuit is cut off, and the control circuit detects the cutoff and stops the current of the coil 11. Even with this configuration, the outdoor unit can be stopped in response to the temperature of the inside / outside connection connector.

FIG. 7 shows an example in which the electric terminals 8 are implanted on the upper surface of the structure 2.

In the above embodiment, a double-cut relay for turning on and off both power supply lines is used as a relay, but a single-cut relay for turning on and off only one of the power supply lines may be used.

[0025]

The present invention exhibits the following excellent effects.

(1) Since the wiring is simplified by integrating the components, the trouble of the wiring work and the possibility of erroneous wiring are eliminated, the amount of electric wires used is reduced, and the number of wiring steps is reduced.

(2) Since the occupied space is reduced by integrating the components, the controller can be downsized.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a composite component showing one embodiment of the present invention.

FIG. 2 is a plan view of a composite part showing one embodiment of the present invention.

FIG. 3 is a perspective view of the composite part of FIG. 2;

FIG. 4 is a partial cutaway view of a controller according to the present invention.

FIG. 5 is a circuit diagram of a composite part showing another embodiment.

FIG. 6 is a plan view of a composite part showing another embodiment.

FIG. 7 is a perspective view of a composite part showing another embodiment.

FIG. 8 is a wiring diagram of a controller showing a conventional example.

FIG. 9 is a conceptual diagram showing the arrangement of components showing a conventional example.

[Explanation of symbols]

 2 structure 5 internal / external connection connector 8 power supply terminal 10 contact 11 coil 12 terminal

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 11/02 103 F24F 11/02 102

Claims (4)

(57) [Claims] 1. A controller is provided between the power supply and the outdoor unit in order to supply control power to the outdoor unit of an air conditioner, a structure having a power supply terminal for connection to a power supply It is formed in a substantially prismatic shape, and
Whether to provide power to the outdoor unit by providing a board connection terminal
Mounted on a printed circuit board with a control circuit to control whether or not
Then, the power supply terminal is provided on the side surface of the structure, and the structure is provided with the contact and the control circuit to the board connection terminal.
A coil that opens and closes the contacts with the applied drive current is incorporated, and an inside / outside connector for connecting to the outdoor unit is formed, and one of the contacts is connected to the power terminal and the other is connected to the terminal of the inside / outside connector. A controller for an air conditioner. 2. The internal / external connection connector is used for a signal line.
Terminals including terminals connected to the board connection terminals
2. The device according to claim 1, wherein three insertion holes are provided.
Air conditioner controller. 3. A cable from an outdoor unit on the upper surface of the structure.
A cord clamp for fixing the
The controller of an air conditioner according to claim 1. 4. An electric power supply control for an outdoor unit of the air conditioner.
Controller provided between the power supply and the outdoor unit for
Has a power terminal for connecting to a power supply
A contact and a coil that opens and closes the contact
And an internal / external connector to connect to the outdoor unit.
And one of the contacts is connected to the power terminal and the other is
To the terminal of the internal and external connection connector,
Supply power to the outdoor unit in response to the temperature of the inside / outside connector.
Incorporate a thermal fuse to stop the supply
The controller of the air conditioner characterized by.