JP2000055438A - Air conditioner - Google Patents

Abstract

(57) [Summary] An air conditioner characterized by controlling the rotational speeds of a compressor, an outdoor fan motor, and an indoor fan motor after a lapse of a predetermined time from the time when the time until the operation is stopped is set in the operation stopping means. Further, the air conditioner is characterized in that during the dehumidifying operation, the humidity is controlled after a lapse of a predetermined time from the time when the time until the operation is stopped is set in the operation stopping means. An object of the present invention is to not only reduce noise, but also to make a living space of a occupant comfortable and to further save energy. After a predetermined time elapses from the time when the time until the operation is stopped is set in the operation stopping means, the rotational speeds of the compressor, the outdoor fan motor, and the indoor fan motor are controlled. Further, during the dehumidifying operation, the humidity is controlled after a predetermined time has elapsed from the time when the time until the operation is stopped is set in the operation stopping means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner that stops operation after a lapse of a set time.

[0002]

2. Description of the Related Art In a conventional air conditioner, an operation stopping means for stopping the operation after a set time has passed is set when the time until the operation is stopped is set in the operation stopping means at bedtime.
The outdoor fan motor and a speed control means for setting the rotation speed of the compressor to a predetermined speed lower than the normal operation are provided. As such a conventional air conditioner, for example, Japanese Utility Model Publication No. 6-4578
No. 4 gazette.

[0003]

The conventional air conditioner is
In order to reduce the noise at bedtime, when the sleep timer is set, the rotation speeds of the compressor and the outdoor fan motor are set to a predetermined speed lower than the normal speed. For example, if the number of revolutions is reduced at the time when the sleep timer is set, for example, when the set room temperature has not been reached, a problem arises in that during cooling operation, the cooling capacity is reduced and it becomes difficult to sleep.

An object of the present invention is to provide an air conditioner that does not lower the cooling capacity even when a sleep timer is set.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner having a compressor, an outdoor fan motor, and an indoor fan motor, and having an operation stop means after a lapse of a set time. After a lapse of a predetermined time from the point of setting, the compressor, or the compressor and the outdoor fan motor, or the compressor and the indoor fan motor, or the compressor and the outdoor fan motor and the indoor fan motor, or the outdoor fan motor, or the indoor fan This is achieved by providing speed control means for setting the rotation speed of the motor to a speed lower than the normal operation.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a control block diagram of the air conditioner. The air conditioner 3 includes an indoor fan motor 4, an outdoor fan motor 5, and a compressor 6. When the operation stop time is set by the operation stop means 1 after the elapse of the set time,
After a predetermined time, the indoor fan motor 4, the outdoor fan motor 5, and the speed control means 2 for lowering the rotation speed of the compressor 6 from the normal rotation speed are provided. FIG. 2 shows a humidity control means 7 for setting the operation stop time by the operation stop means 1 after the set time elapses and setting the humidity higher than the normal humidity after the predetermined time elapses.

Next, the control means will be described with reference to the flowchart of FIG. First, the operation stopping means includes a control unit using a timer. Step S of timer set
In 1, when the timer is not set, normal operation is performed, and the rotation speeds of the indoor fan motor 4, the outdoor fan motor 5, and the compressor 6 are normal rotation speeds. When the timer is set, the process proceeds to the next step S2. If the required time has not elapsed, the process does not proceed to the next step until the required time has elapsed. When the required time has elapsed, the process proceeds to the next step S5, where the speed of the compressor is controlled. This control means controls the rotation speed to be lower than the normal command rotation speed. Next, step S
Proceeding to 6, control of the number of revolutions of the outdoor fan motor is performed. This control means performs control at a speed lower than the normal rotation speed. Next, the process proceeds to step S7, in which the number of revolutions of the indoor fan motor is controlled. This control means performs control at a speed lower than the normal rotation speed.

The above description is about the control when the compressor, the outdoor fan motor, and the indoor fan motor are combined.
A pattern in which each of the compressor, the outdoor fan motor, and the indoor fan motor is controlled, and a pattern in which control is performed by a combination of the compressor and the outdoor fan motor, or the compressor and the indoor fan motor, are considered. Since the speed is controlled after a lapse of a predetermined time as well as the noise is reduced by controlling in any combination, the living space of the occupant can be made comfortable and the energy can be further saved. Next, the control means will be described with reference to the flowchart of FIG. Steps up to step S2 are as described in FIG. In step S3, it is determined whether the current operation state is the cooling / heating operation or the dehumidification operation. If the operation is the cooling operation or the heating operation, the process proceeds to step S5, and the rotation speed of the compressor is controlled. If the operation is the dehumidification operation, the process proceeds to step S4 to perform humidity control. In this humidity control, the humidity is set higher than a normal humidity setting, and the humidity is adjusted by inputting the humidity by means for detecting the humidity. As means for adjusting the humidity, the number of rotations of the compressor, the outdoor fan motor, and the indoor fan motor is adjusted.

Next, a description will be given with reference to the flowchart of FIG. In step S3, it is determined whether the current operation state is the cooling / heating operation or the dehumidification operation. If the current operation state is the cooling operation or the heating operation, the process proceeds to step S8. Step S8 is
It is determined whether the current room temperature has reached the set temperature.
If the temperature has reached the set temperature, the process proceeds to step S5, and thereafter, as shown in FIG.
Similarly, the control is performed so that the rotation speeds of the compressor, the outdoor fan motor, and the indoor fan motor become slow. If the set room temperature has not been reached, the process proceeds to step S2, and normal operation is performed without proceeding to step S5 until a predetermined time has elapsed. Step S
If it is a dehumidifying operation in 3, the process proceeds to step S9, and it is determined whether or not the set humidity is reached in step S9. If the set humidity has been reached, the process proceeds to step S4 to perform humidity control. If the set humidity has not been reached, the process proceeds to step S2, and the normal dehumidifying operation is performed without proceeding to step S4 until a predetermined time has elapsed. Therefore, by judging whether the temperature has reached the set temperature or the set humidity or whether a predetermined time has elapsed, even if the sleep timer is set, the rotational speeds of the outdoor fan motor, the indoor fan motor, and the compressor are not given priority.

[0011]

According to the present invention, the speed control means for setting the rotation speeds of the compressor, the outdoor fan motor and the indoor fan motor to a speed lower than the normal operation after a predetermined time elapses after setting the sleep timer, , During dehumidification operation,
After the lapse of a predetermined time, the humidity is adjusted to a predetermined humidity higher than the normal operation by the means for adjusting the humidity, so that discomfort after the setting of the sleep timer can be eliminated.

Further, if the set room temperature or the set humidity has been reached even if the predetermined time has not elapsed, the speed control or the humidity control is performed.

From the above, it is possible to not only reduce the noise, but also to make the living space of the occupants comfortable and save energy.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating control according to the embodiment of the present invention.

FIG. 4 is a flowchart illustrating control according to the embodiment of the present invention.

FIG. 5 is a flowchart illustrating control according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operation stop means, 2 ... Speed control means, 3 ... Air conditioner, 4 ... Indoor fan motor, 5 ... Outdoor fan motor, 6
... compressor, 7 ... humidity control means.

Claims (1)

[Claims] 1. An air conditioner having a compressor, an outdoor fan motor, and an indoor fan motor and having an operation stop means after a set time has elapsed, a predetermined time has elapsed from the time when the time until the operation stop is set in the operation stop means. Later, the compressor,
Speed control to make the rotation speed of the compressor and the outdoor fan motor, or the compressor and the indoor fan motor, or the compressor and the outdoor fan motor and the indoor fan motor, or the outdoor fan motor or the indoor fan motor slower than the normal operation An air conditioner characterized by comprising means.