JPS5816101B2 - Air conditioner operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating device for an air conditioner equipped with an operation mechanism for operating a fan motor and a compressor motor for indoor air circulation whose strength can be switched.

Generally, an air conditioner is configured to start/stop a fan motor and change its speed, and to start/stop a compressor motor, using an operating mechanism using operating switches such as a rotary switch or a pull switch.

In such an operation mechanism, when an operation command is issued in one direction, for example, stop → strong operation → medium operation → low operation → stop, the fan motor operates at a low speed to perform cooling, and from 5 to 5 low operation. When switching to strong operation in which the fan motor runs at high speed and performs cooling, the fan motor must pass through a stopped state before switching to strong operation.

In this case, the power to the compressor motor is temporarily stopped, but if the power is turned on immediately after stopping, the compressor motor will lock up due to the large pressure difference in the refrigerant circuit, causing an overcurrent to flow and creating a dangerous situation. The breaker may blow.

Therefore, you have to wait for about 3 minutes or more with the operation stopped.

The same applies when switching from medium operation to strong operation and from weak operation to medium operation.

Even if the compressor can be switched in both directions, the compressor motor may be stopped by accidentally operating it in the opposite direction.

In addition, in recent years, operating mechanisms that combine a stepping relay and a motor, and electronic operating mechanisms that control the main unit by receiving signals from ultrasonic transmitters, such as those found in television receivers, have been adopted as operating devices for air conditioners. Although it has the advantage of being extremely easy to operate, it has the disadvantage that the compressor motor tends to start and stop repeatedly in a short period of time, as described above.

The present invention has been made in view of the above-mentioned facts, and includes a control means that sequentially switches the operation, speed change, and stop of the seven compressor motors, and a control means that operates when the control means is at the stop position and that controls the operation of the compressor motor after a predetermined period of time from the time of switching. The purpose of the present invention is to provide an operating device for an air conditioner equipped with an operation mechanism that has a delay off mechanism that cuts off electricity, and which maintains electricity to the compressor motor for a certain period of time even when a stop command is issued to the compressor motor. According to the present invention, even if the operation command for the operation mechanism is issued only in one direction, the speed of the fan motor can be changed arbitrarily without turning off the power to the compressor motor by continuously operating the operation mechanism. It is.

An embodiment of the present invention will be described below based on the drawings. In FIG. 1, 1 is an AC power source, 2 is an operation switch, 3 is a stepping mechanism connected to the AC power source 1 via the operation switch 2, and 4 and 5 are first and second changeover switches to which the switching signals shown in FIG. Motor with high speed terminal h
, a medium speed terminal m and a low speed terminal 1 are connected to the H, M and L contacts, respectively.

γ is a delay off relay connected to the AC power supply 1 via the first changeover switch 4, and 8 is closed at the same time as the delay off relay 70 is energized, and for a certain period of time (about 3 seconds as an example) after the energization is stopped.
A delayed-off relay contact 9, which opens later, is a compressor motor connected to the AC power source 1 via a delayed-off relay contact 8.

An operating mechanism 10 is composed of an operating switch 2, a stepping mechanism 3, first and second changeover switches 4.5, and a delay off relay 7. The stepper mechanism 3 is installed in a remote control box connected to the stepper 3, and is closed by pressing directly or by receiving output from a receiver based on an ultrasonic signal, thereby activating the stepping mechanism 3.

When the air conditioner is in a stopped state, the first changeover switch 4 is open (the A and B contacts are open), and the second changeover switch 5 is connected between the C and P contacts.

Therefore, the delay off relay 7 is not energized, the compressor motor 9 is stopped, and the fan motor 6 is also stopped.

It has stopped.

When the operation switch 2 is pressed once, the stepping mechanism 3 is activated, the first changeover switch 4 is closed, and the second changeover switch 5 is placed between the ( and -H contacts).

Therefore, the delay-off relay 7 is energized and the delay-off relay contact 8 is closed, so the compressor motor 9 is energized and started, and the fan motor 6 is energized via the high-speed terminal and starts high-speed air blowing operation. .

Therefore, the air conditioner performs a strong cooling operation.

Use the operation switch to change the wind speed of the fan motor 6.

All you have to do is press the button 2 further.

In response to the second and third operations, the second changeover switch 5 sequentially closes between the C and M contacts and between the C and L contacts, and the operating speed of the fan motor 6 changes in the order of medium speed and low speed. The changeover switch 4 remains closed, and the air conditioners perform medium and weak cooling operations, respectively.

When the fourth operation is performed, the first changeover switch 4 is opened and the second changeover switch 5 is again placed between the CP and CP contacts.

Therefore, the fan motor 6 is de-energized and stops blowing air, but the compressor motor 9 is de-energized when the delay-off relay contact 8 opens approximately 3 seconds after the delay-off relay 7 de-energizes, and the air conditioner is in a stopped state. become.

For the fifth and subsequent operations, the above-described operation is repeated.

If the air conditioner is currently in weak operation and it is desired to switch it to strong operation, it is sufficient to press the operating switch 2 twice in succession.

When the second changeover switch 5 moves from the L contact to the H contact via the P contact, the first changeover switch 4 opens once and de-energizes the delay-off relay 70, but the delay-off relay contact 8 remains closed for about 3 seconds. During this time, the compressor motor 9 can be de-energized by operating the operation switch 12 so that the first changeover switch 4 closes again (the second changeover switch 5 closes the C-H contacts). There is no.

Therefore, you can quickly switch from weak operation to strong operation,
There is no need to wait more than 3 minutes for pressure balance as in the past.

Also, switching from weak operation to medium operation and from medium operation to strong operation) can be done in the same way.

Note that the operating mechanism 10 in the implementation of the present invention can be constructed using either a mechanical or electronic system, and the delay-on relay can also be replaced with an electronic timer.

Further, although an example has been described in which the operation is performed in the order of stop → strong operation → medium operation → weak operation → stop, the same applies to those that can be operated in the opposite direction or in both directions.

It can also be applied to systems in which air blowing (only the fan motor operates at a constant speed) is performed between stop and start.

In this case, the compressor motor is delayed and stopped based on the time when operation is switched to air blowing.

Furthermore, in the present invention, the compressor motor is maintained in operation for a certain period of time after the stop command, but this method is combined with a separate timer circuit to stop the compressor motor after a certain period of time after the compressor motor stop command is issued. If the compressor motor cannot be restarted for a predetermined period of time until the pressure is balanced after energization is removed, it will be safe even if the operating switch is used incorrectly.

As described above, the present invention includes a control means for sequentially switching operation, speed change, and stop of a fan motor for indoor air circulation whose strength can be switched, and a compressor motor that operates when the control means is at a stop position and after a predetermined period of time from the time of switching. Equipped with an operation mechanism that has a delay off mechanism that cuts off power to the compressor motor, even if a stop command is issued to the compressor, the power to the compressor motor is maintained for a certain period of time. When a command is issued,
Even if you use an operating mechanism that issues operating commands in only one direction, if you operate it continuously, you can arbitrarily change the speed of the fan motor without stopping the compressor motor, which is useful for air conditioning. The present invention provides an operating device for a machine, and is also suitable for continuous operation of an operating mechanism from outside the machine by transmitting means such as ultrasonic waves.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram for explaining the operation of FIG. 1. 6,---Fan motor, 7...A・delay off relay, 9・Pa...compressor motor, 10・Pa...''
Operation mechanism.

Claims (1)

[Claims] 1. A control means that sequentially switches the operation, speed change, and stop of an indoor air circulation fan motor whose strength can be switched, and a delay off mechanism that operates when the control means is at the stop position and cuts off the power to the compressor motor after a predetermined time from the time of switching. An operating device for an air conditioner, characterized by comprising an operating mechanism having the following.