JPH06101885A - Method for controlling air-conditioner - Google Patents

Abstract

PURPOSE:To perform an automatic switching to a room cooling or heating in a state in which installation conditions are considered by switching to the room cooling or heating if a room temperature exceeds an upper or lower limit of a monitoring zone. CONSTITUTION:A monitoring zone of switching room cooling/heating of specific temperature range whose center is a correction setting temperature added with a correction value considering installation conditions is set. The room temperature is measured at the time of starting an automatic operation and at each specified time by a room temperature sensor 4. If the room temperature exceeds the upper limit of the zone, it is switched to room cooling, while if it drops to the lower limit or lower, it is switched to room heating. In the meantime, it is so controlled as to adjust the room temperature by a specified operation mode according to the room temperature, humidity and outdoor temperature measured by the sensor 4, a humidity detecting sensor 2 and an outdoor temperature sensor 3. Thus, an automatic switching of the room cooling/heating is effectively conducted taking a correction value corrected for the installation conditions of an indoor unit into consideration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an air conditioner, and more particularly to automatic switching between cooling and heating.

[0002]

2. Description of the Related Art Conventionally, at the start of automatic operation of an air conditioner,
Detects indoor temperature and humidity and outdoor temperature, and heats, cools,
Dehumidifying (dry), selecting the most suitable operation mode for monitoring, starting operation based on the set temperature, detecting the indoor temperature, humidity, and outdoor temperature at regular intervals during operation, and automatically according to the changes The operation mode is switched to. However, since the air conditioning conditions in the room vary depending on the size of the room and the installation location of the indoor unit, set a constant correction value for each installation location and operate the air conditioner at the correction setting temperature with the correction value added. As shown in FIG. 1 in the heating operation as an example, when the indoor unit is installed on a high wall or ceiling of the room, 4 ° C. and 6 ° C., respectively.
Control is performed with the correction value of the heating operation added, and the difference between the correction setting temperature of the heating operation with this correction value and the start temperature of the cooling operation is reduced, and the indoor temperature rises and exceeds the correction setting temperature of the heating operation. Then, the temperature reaches the start temperature of the cooling operation immediately, which causes a problem that it becomes difficult to set the determination of the timing of switching to the cooling operation.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is intended to reliably perform automatic switching between cooling and heating in a state in which a correction value according to installation conditions of an indoor unit is taken into consideration. It is intended to provide a control method of an air conditioner that can be performed.

[0004]

In order to achieve the above object, there is provided correction means for correcting a difference in set temperature depending on the installation position of an indoor unit, and a corrected set temperature corrected by the correction means and a humidity detection sensor, The operation mode is set by the signals from the outdoor temperature sensor and the indoor temperature sensor, and the operation is controlled, and a monitoring zone with a constant temperature width is provided around the correction set temperature, and the indoor temperature is monitored at the start of automatic operation and at regular time intervals. When the detected indoor temperature exceeds the upper limit of the monitoring zone, the cooling operation is performed, and when the indoor temperature is lower than the lower limit, the heating operation is switched. Further, the correction value of the correction set temperature is increased / decreased at a constant rate at constant time intervals, and gradually approaches the upper limit or the lower limit of the monitoring zone, thereby determining the switching timing of cooling or heating. .

[0005]

According to the above construction, the cooling of the temperature range within a certain range around the corrected set temperature added with the correction value according to the installation condition
Set the heating switching monitoring zone, detect the indoor temperature at the start of automatic operation and at regular intervals, and switch to cooling operation when the indoor temperature exceeds the upper limit, and to heating operation when the indoor temperature falls below the lower limit. During that time, the room temperature is controlled in a predetermined operation mode according to the detected indoor temperature, humidity, and outdoor temperature.

[0006]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of an indoor space showing an example of a correction value at the time of heating operation depending on the installation position of the indoor unit. The floor-standing type is 0 ° C, the wall-mounted type is 4 ° C, and the ceiling type is 6 ° C. The correction value is set. FIG. 2 is a block diagram showing a configuration of the present invention. A humidity detecting sensor 2 for detecting indoor humidity, an outdoor temperature sensor 3 for detecting an outdoor temperature, and an indoor temperature sensor 4 for detecting an indoor temperature are connected to the control unit 1. Further, input means 6 for inputting a correction value according to the installation position of the indoor unit to the memory 5 is provided, and when the automatic operation is started, the indoor humidity, the outdoor temperature and the indoor temperature are detected by the respective sensors and taken into the control unit 1. The humidity comparison means 7, the outdoor temperature comparison means 8, and the indoor temperature comparison means 9 compare the data of the operation mode table, an example of which is shown in FIG. Switching means
The operation mode is set by 15 to control the compressor 10 and the four-way valve 11.

4 and 5 are flowcharts showing the details of the present invention. (A) is a main routine of the present invention, (b) is a subroutine for cooling operation, and (c) is a subroutine for heating operation. In the main routine (a), when the automatic operation is started, the room temperature sensor 4 detects the room temperature TR (21), and the set temperature TS stored in the memory 5 is preset to the corrected set temperature TSA by a remote controller or the like. Put (2
2) Room temperature TR and the specified monitoring zone width (in this example ±
2 ° C) lower limit value is added to the correction set temperature TSA, and if the room temperature TR is below the correction set temperature TSA, the heating operation routine (c) is performed (23), and the room temperature TR and the upper limit of the monitoring zone width are set. When the room temperature TR is higher than the correction set temperature TSA, it is distributed to the cooling operation routine (b), and the room temperature monitoring state is continued in the monitoring zone (24). Cooling operation routine (b)
Then, put the set temperature TS into the corrected set temperature TSA and
11 is closed to put it in a cooling operation state (25), the operation of the compressor 10 is started, the indoor temperature is adjusted according to a predetermined operation mode (26), and the compressor 10 is stopped (27) for a certain time (this example). Then 15
After a lapse of (minutes) (28), the process returns to the main routine (a) (A), and the indoor temperature monitoring state is continued. In the heating operation routine (c), the four-way valve 11 is opened to enter the heating operation state, and the operation of the compressor 10 is started (29).
The sum of the set temperature TS and the adjustment correction value TA (the upper limit of the correction value depending on the installation position in the first heating operation setting) is entered in and the operation is continued to adjust the room temperature (30), and the compressor 10 is operated. If (31) 15-minute timer 12 is set and room temperature control is continued (32), compressor 10 is stopped during that time (34), and 15-minute timer 12 is up (3
3) Compare the adjustment correction value TA with the correction value according to the installation position of the indoor unit (35), and if the adjustment correction value TA exceeds the correction value and if the adjustment correction value TA does not exceed the correction value, the adjustment correction The value TA is increased by 1 ° C. to update the adjustment correction value TA (36), and in any of the above cases, the routine returns to (30) and repeats this routine. If the compressor 10 stops in this state (31),
Set the 10-minute timer 13 to continue controlling the room temperature (37),
The indoor temperature adjustment is continued (39) until the 10-minute timer 13 times up (38) or the compressor 10 starts operation during that time (39), and when the 10-minute timer 13 times up (38), the adjustment correction value TA becomes 0. If it is below 0 ° C (40), if it is below 0 ° C (A), it returns to the main routine and continues automatic operation. If the adjustment correction value TA is not lower than 0 ° C (40), 1 ° C is subtracted from the adjustment correction value TA to update the adjustment correction value TA (41), and this routine is repeated again. As described above, by adjusting the adjustment correction value TA according to the state of automatic operation, the adjustment correction value TA becomes 0 when the heating / cooling is switched, and the timing of the cooling switching is surely grasped. When the heating operation is continued, the automatic operation can be performed by incorporating the correction value suitable for the installation position of the indoor unit.

[0008]

As described above, in the present invention, in addition to the automatic operation in the normal operation mode, a monitoring zone having a temperature range within a certain range is provided around the correction set temperature added with the correction value according to the installation condition, By switching to cooling or heating when the upper limit or lower limit of the monitoring zone is exceeded, automatic switching to cooling operation or heating operation can be reliably performed in a state in which the installation conditions are taken into consideration.

[Brief description of drawings]

FIG. 1 is a side surface layout diagram of an indoor space showing an example of a correction value during a heating operation depending on an installation position of an indoor unit.

FIG. 2 is a block diagram showing a configuration of the present invention.

FIG. 3 is a diagram showing an example of an operation mode table.

FIG. 4 is part of a flow chart showing details of the present invention.

FIG. 5 is another part of a flow chart showing details of the present invention.

[Explanation of symbols]

 1 Control unit 2 Humidity detection sensor 3 Outdoor temperature sensor 4 Indoor temperature sensor 5 Memory 6 Input means 7 Humidity comparison means 8 Outdoor temperature comparison means 9 Indoor temperature comparison means 10 Compressor 11 Four-way valve 12 15 minutes timer 13 10 minutes timer 14 Operation Mode setting means 15 Cooling / heating switching means

Claims (2)

[Claims] 1. A correction unit that corrects a difference in set temperature depending on the installation position of an indoor unit, and operates by a corrected set temperature corrected by the correction unit and signals from a humidity detection sensor, an outdoor temperature sensor, and an indoor temperature sensor. Along with setting a mode for operation control, a monitoring zone with a constant temperature range centered on the corrected set temperature is provided, and the indoor temperature is detected at the start of automatic operation and at regular intervals, and the indoor temperature exceeds the upper limit of the monitoring zone. A method for controlling an air conditioner, wherein the cooling operation is switched to a cooling operation and the heating operation is switched to a heating operation when the temperature is below the lower limit. 2. The timing for switching between cooling and heating is determined by increasing / decreasing the correction value of the correction set temperature at a constant rate at fixed time intervals and gradually approaching the upper limit or the lower limit of the monitoring zone. The method for controlling an air conditioner according to claim 1, wherein the method is as follows.