JPH0552379A - Air conditioner control method - Google Patents

Abstract

PURPOSE:To obtain a comfortable, not overcooled, living space by a method wherein when a room temperature reaches a set value, every time a prescribed time elapses, the set temperature is raised steppingly up to a corrected value of the set temperature which is preparatorily stored in a memory. CONSTITUTION:When a cooling operation is commanded by an operation of a remote controller, an indoor side controlling part 4 starts operation of an indoor fan 5, while an outdoor side controlling part 6 starts operation of an outdoor fan 9. These operations of the indoor and outdoor fans 5 and 9 are continued about one minute, and then a compressor 8 is started. Before the operation start of the compressor 8, the indoor side controlling part 4 obtains a room temperature Trs from a temperature detecting sensor 2, calculates a temperature difference DELTAT between the room temperature Trs and a set temperature Ts at a time of cooling operation, and stores a calculation result in a memory. After the room temperature Trs reaches the set temperature Ts, every time a prescribed time period elapses, the set temperature is raised steppingly corresponding to the temperature difference DELTAT up to a corrected value T of the set temperature Ts which is preparatorily stored in the memory. Accordingly, a cooling operation substantially matching a change of a feeling temperature can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method for an air conditioner during cooling operation.

[0002]

2. Description of the Related Art An indoor unit side of an air conditioner is provided with a temperature detecting sensor for detecting an indoor temperature, a humidity detecting sensor for detecting a humidity, an indoor side control unit for controlling an indoor fan, etc. There is a temperature detection sensor that detects the outdoor temperature on the unit side, and an outdoor control unit that controls the compressor, outdoor fan, etc., and a signal line connects the indoor control unit and the outdoor control unit. Information is being exchanged. The microcomputer of the indoor-side control unit stores a plurality of operation modes classified by the indoor temperature, the humidity, and the value of the outside air temperature in the memory of the microcomputer. The operation mode suitable for one detection data is selected, and the compressor and the like are controlled. At the start of the initial operation, the indoor temperature obtained when the indoor fan and the outdoor fan are operated for 1 minute, and
The operation mode is determined based on the humidity and the outside air temperature. Then, for example, in the cooling operation, when the room temperature drops to the set temperature as shown in FIG. 4, thereafter, control is performed to maintain the room temperature set at the start of operation unless the user changes the set temperature. I have to.

[0003]

However, since the sensible temperature of a person changes with the lapse of time after the start of the cooling operation, if the indoor temperature changes at the temperature set at the start of the operation, the user feels too cold. There is. This is because, for example, when a user walks outdoors in a hot and humid place for a long time, he / she wants to cool quickly, so the user sets the set temperature of the air conditioner to a low level. Therefore, when it became too cold, the set temperature had to be changed. Also, if the user stays in a room that is too cold and falls asleep there for a long time, he or she may catch a cold and adversely affect health. Therefore, in the present invention,
It is an object of the present invention to provide an air conditioner control method capable of solving these problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and controls the compressor and the like by obtaining the indoor temperature and humidity, the outdoor temperature and the like. In the air conditioner configured as described above, the indoor temperature is detected at the start of the cooling operation, the temperature difference between the indoor temperature and the set temperature is obtained and stored, and when the indoor temperature reaches the set temperature, a predetermined time elapses from that time. Each time, the set temperature is increased stepwise up to the correction value of the set temperature stored in advance corresponding to the temperature difference.

[0005]

According to the above control method, when the cooling operation is instructed, the room temperature is detected, the temperature difference between the room temperature and the set temperature is obtained, and the temperature difference is stored in the memory. Then, when the indoor temperature reaches the set temperature, the set temperature gradually rises up to the correction value of the set temperature stored in advance in the memory every time a predetermined time elapses. Therefore, the cooling operation is almost matched to the change in the sensible temperature.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing an outline of a control system of an air conditioner. In the figure, A is the indoor unit side,
Reference numeral B denotes an outdoor unit side, 1 is a remote control signal light receiving portion, 2 is a temperature detection sensor for detecting indoor temperature, 3 is a humidity detection sensor for detecting indoor humidity, and 4 is an input signal from the temperature detection sensor 2 or the like. The indoor side control unit that controls the operation of the indoor fan 5 based on the above, and exchanges signals with the outdoor unit side, 6 is an outdoor side control unit, 7 is an inverter unit that is drive-controlled by the outdoor side control unit 6, Reference numeral 8 is an inverter-controlled compressor, 9 is an outdoor fan, and 10 is a temperature detection sensor for detecting the outdoor temperature.

Although not shown in the indoor control unit 4, a temperature difference Δ between the indoor temperature Trs at the start of the cooling operation and the set temperature Ts for the cooling operation, as shown in FIG.
There are a memory that stores a correction value T (° C.) of a set temperature that is set according to the magnitude of T, a comparator that is used for determining a temperature difference ΔT, and the like. When a cooling operation instruction is given by remote control operation, the indoor control unit 4 starts the operation of the indoor fan 5, and the outdoor control unit 6 starts the operation of the outdoor fan 9. The operation of only the indoor fan 5 and the outdoor fan 9 is continued for about 1 minute, and then the operation of the compressor 8 is started. However, before the operation of the compressor 8 is started, the indoor side control unit 4 Is the room temperature Trs detected by the temperature detection sensor 2, and this room temperature Trs
The temperature difference ΔT between the cooling temperature and the set temperature Ts for cooling operation is calculated and stored in the memory. The temperature difference ΔT stored in this memory is used for the subsequent control of the cooling operation.

FIG. 3 shows the state of this control. For about 1 minute from the start of cooling shown on the left side of the figure, only the indoor fan 5 and the outdoor fan 9 as described above are operated, and the indoor temperature Trs is detected by the temperature detection sensor 2 during that time, and the indoor side The temperature of the room Trs and the set temperature T immediately before the start of the cooling operation (before the compressor 8 is started) are stored in the memory of the control unit 4.
When the temperature difference ΔT from s is stored, the operation of the compressor 8 is started and the room temperature Trs drops toward the set temperature Ts. When the indoor temperature reaches the set temperature Ts, the outdoor-side control section 6 obtains a signal from the indoor-side control section 4 and controls the compressor 8 so that the indoor temperature changes stably. If the temperature difference ΔT exceeds 1 ° C, the room temperature Trs
When the temperature reaches the set temperature Ts, a correction value T ° C. of the set temperature displayed in FIG. T
It is designed to control the temperature to rise to s + T ° C.

In the case of the present embodiment, the correction value T ° of the set temperature Ts is divided into four ways as shown in FIG. 2 and is obtained by subtracting the set temperature Ts from the room temperature Trs at the start of the cooling operation. When the temperature difference ΔT is ΔT> 10 ° C, the set temperature Ts
The correction value T of 3 is set to 3 ° C., and when ΔT is 10 ° C. ≧ ΔT> 5 ° C., the correction value T of the set temperature Ts is set to 2 ° C. and ΔT is 5 ° C. ≧
When ΔT> 1 ° C, the correction value T of the set temperature Ts is set to 1 ° C, and when ΔT is ΔT ≦ 1 ° C, the correction value T of the set temperature Ts is set.
Is set to 0. The reason is that the larger the temperature difference ΔT between the room temperature Trs and the set temperature Ts at the start of the cooling operation, the stronger the tendency of overcooling and the greater the degree of coldness felt by the occupants over time. Is. Therefore, based on the correction value T as shown in FIG.
If the control shown in FIG. 3 is performed, a comfortable living space can be obtained.

[0010]

According to the air conditioner controlled as described above, the room temperature reaches the set temperature during the cooling operation, a predetermined time elapses, and the sensible temperature of the person occupying the room changes. , When the person in the room feels cold, increase the indoor temperature in steps up to the pre-stored correction value of the preset temperature corresponding to the temperature difference between the indoor temperature at the start of the cooling operation and the preset temperature. As a result, a comfortable living space that is not too cold can be obtained, which contributes to health maintenance and consumes less power, which is economical.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a control system of an air conditioner according to the present invention.

FIG. 2 is a sectional view of a correction value of a set temperature applied to the control of the present invention.

FIG. 3 is a time chart showing a control method of the present invention.

FIG. 4 is a time chart showing a conventional control method.

[Explanation of symbols]

 1 Remote control signal light receiving section 2 Temperature detection sensor 3 Humidity detection sensor 4 Indoor side control section 5 Indoor fan 6 Outdoor side control section 7 Inverter section 8 Compressor 9 Outdoor fan 10 Temperature detection sensor

Claims (1)

[Claims] 1. An air conditioner configured to control the compressor and the like by obtaining the indoor temperature and humidity, the outdoor temperature, etc., and detect the indoor temperature at the start of cooling operation, and set the indoor temperature. A temperature difference from the temperature is obtained and stored, and when the indoor temperature reaches the set temperature, every time a predetermined time elapses from that time, up to a correction value of the set temperature stored in advance corresponding to the temperature difference, A method for controlling an air conditioner, characterized in that the set temperature is increased stepwise.