JPH04306442A - Method of controlling air conditioner - Google Patents

Abstract

PURPOSE:To provide a timer setting with a simple operation and further provides an energy saving even in case of a separation of a user from a room for a short period of time. CONSTITUTION:The present invention provides, in the case that a room used by a user of an air conditioner is absent for a relative short period of time, means for inputting a non-presence estimating time for inputting a palnned time of absensing the room, means for sensing a room temperature upon elapse of a predetermined time after temporary stopping of the compressor, means for estimating a load temperature for estimating a load in the room from a variation of a room temperature detected by the room temperature sensing means and an operation control means for controlling an operation control for air conditioning the room where no preson is present.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to an air conditioner.
In particular, the present invention relates to a control method equipped with a timer.

0002

2. Description of the Related Art FIG. 3 is a characteristic diagram showing the relationship between time and room temperature according to the invention of a conventional air conditioner control device disclosed in, for example, Japanese Unexamined Patent Publication No. 2-71035. Until the stop at time T0, the operation of the previous day is shown, and in this case, the room temperature is constant at the set temperature, and after the stop, the room temperature gradually decreases. On the other hand, the time when the vehicle is scheduled to operate at the same set temperature as the previous day is T2, and this set temperature and the current room temperature T
Calculate how much time in advance from the reserved time T2 to start operation based on the difference in S, and start constant speed rotation operation at time T1, which is a time △T0 earlier than the reserved time T2, and operate at maximum output after reaching the branch temperature. I do.

Next, FIG. 4 shows a flowchart for daily reservations. In FIG. 4, the upper dotted line frame indicates a wireless remote control (hereinafter referred to as remote control) unit for the air conditioner, and the lower dotted line frame indicates a control unit attached to the air conditioner body that receives transmission from the remote control unit. In the remote control unit, the person making the reservation sets the current time and contents of the reservation. The reservation details include the time at which the temperature reaches the appropriate temperature each day, the time at which the operation stops, and the temperature value at the appropriate temperature.

[0004] In the main body control unit, although the operation is stopped, it is on standby and always measures the current time and current room temperature, while also measuring the data from the previous operation (difference between the set temperature and outside temperature, up to the set temperature). In preparation for the next operation, an advance time ΔT0 is always calculated based on the operating time and motor rotation speed, and the operation is started at the appropriate time T2.

[0005]

[Problems to be Solved by the Invention] Conventional air conditioners are configured as described above, and are convenient for daily repeat patterns, but for one-time settings or short-time timer settings. There was a problem in that it took time to set the time, and the previous data could not be used effectively, making it impossible to calculate the time forward.

[0006] This invention was made to solve the above-mentioned problems, and aims to provide a control method that allows easy setting of a timer and enables energy-saving operation when leaving the room for a short time. There is.

[0007]

[Means for Solving the Problems] A method for controlling an air conditioner according to the present invention provides a method for controlling an air conditioner when the user of the air conditioner is absent from the room he/she is using for a relatively short period of time. A scheduled absence time input means for inputting the time; a room temperature detection means for temporarily stopping the compressor and detecting the room temperature after a predetermined time has elapsed; and a load temperature estimation means for estimating the load on the room from the change in room temperature detected by the room temperature detection means. and an operation control means that operates to air-condition a room where no one is present in accordance with the estimated load.

[0008]

[Operation] The control of the air conditioner in this invention stops the compressor once when the time of leaving the room is input.
By calculating the load in the room from the change in room temperature during that time, the air conditioner is controlled so that the room temperature is optimal when the user returns to the room.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the relationship between time and room temperature to explain the operating state of the air conditioner during absence according to the present invention. In the figure, after the compressor is stopped T0, the room temperature gradually decreases, and ΔT after Δt has elapsed is determined. The indoor load is estimated based on the room temperature ΔT, which changed to Δt for a short period of time, the absolute temperature TL, etc., and the advance time ΔT0 is determined. The curve shown by the broken line is the advance time △T
0 to △T1, but if the room temperature drops too much, the total input power may increase even if the compressor is stopped for a long time, so the compressor O
It repeats N/OFF.

Next, the operation will be explained with reference to the flowchart shown in FIG. First, in step 1, when the user of the air conditioner leaves the room for a short time to eat, etc., the expected time t of absence is input. Next, in step 2, the air conditioner main body immediately stops the compressor. After stopping the compressor, after Δt has passed in step 3, the absolute room temperature TL is determined in step 4.
is detected, and in step 5, the absolute room temperature TL is subtracted from the set room temperature ΔT. And △T/△t, TL
, t, ΔT0 is calculated in step 6. In step 6, ΔT0 calculated in step 6 is subtracted from t. Then, the time △T is brought forward from the scheduled absence time t.
When the temperature reaches 0, the compressor is operated and the temperature is controlled to return to the set temperature.

[0011]

Effects of the Invention As described above, according to the present invention, when the user of the air conditioner will be absent from the room he/she is using for a relatively short time, the user can enter the expected time of absence from the room. a time input means; a room temperature detection means for temporarily stopping the compressor and detecting the room temperature after a predetermined time has elapsed; a load temperature estimation means for estimating the load in the room from a change in the room temperature detected by the room temperature detection means; Since the system is equipped with an operation control means that controls the operation to air-condition the room when no one is present according to the load estimated by the means, it has not been possible to leave the system running during short periods of absence. Even people who used to spend a lot of time can now save energy in small ways, which has the effect of allowing them to remain comfortable when they return to their rooms.

[Brief explanation of drawings]

FIG. 1 is a characteristic diagram showing a control method for an air conditioner which is an embodiment of the present invention.

FIG. 2 is a control operation flowchart of FIG. 1;

FIG. 3 is a characteristic diagram showing a conventional air conditioner control device.

FIG. 4 is a control operation flowchart of FIG. 3;

[Explanation of symbols]

none.

Claims (1)

[Claims] Claim 1: Scheduled absence time input means for inputting the scheduled time of absence from the room when the user of the air conditioner will be absent from the room for a relatively short time, and a means for temporarily stopping the compressor. room temperature detection means for detecting the room temperature after a predetermined period of time has elapsed; load temperature estimation means for estimating the load in the room from the change in room temperature detected by the room temperature detection means; 1. A method for controlling an air conditioner, comprising: an operation control means for controlling the operation so as to air condition a room where the user is not present.