JPH04107611A - Automatic operation method for air conditioner - Google Patents

Abstract

PURPOSE:To reduce the ON/OFF control frequency and to keep a stable temperature for a long time in a pleasant state by choosing the operating output set previously based on the energizing time of a temperature sensor and outputting this output to an output switching part. CONSTITUTION:At a storage judging part, plural types of count signals are previously chosen and the proper operating output is set and stored in accordance with each count signal. A counter part 21 counts the time during which a set temperature is detected by a temperature sensor 20 and the sensor 20 is turned off. Then a count signal is outputted to the part 22. At the part 22, the operating output equivalent to the inputted count signal is chosen and an operating output signal is outputted to an output switching part 23. The part 23 switches the load based on the operating output signal. As a result, a proper operating output is automatically chosen in response to the size of each room. Then the ON/OFF control frequency is reduced and the fluctuating range of the room temperature is also reduced. Thus a state temperature is kept for a long time in a pleasant state.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automatic operation method for an air conditioner/heater having a temperature control function, and particularly relates to an air conditioner/heater that operates with less on/off control of the air conditioner/heater. This invention relates to an automatic driving method.

<Conventional Technology> Conventionally, air conditioners and heaters have been equipped with functions to automatically adjust temperature, humidity, etc. As part of this automatic adjustment function, for example, when adjusting the temperature, a built-in temperature sensor such as a thermostat detects the room temperature, compares it with a preset temperature (set temperature), and based on the judgment result. The mainstream is one that controls heating and cooling equipment on and off.

The suitability of installation for the size of the room in which the air conditioner is installed is determined based on whether the air conditioner is on for a long time or short. Recently, an operating method has been implemented in which the operating output is gradually changed to determine an appropriate output so as to reduce on/off control.

<Problems to be Solved by the Invention> However, the conventional automatic operation method for an air conditioner/heater has the following drawbacks. The case of heating will be explained below with reference to the drawings.

Figure 7 is a comparison diagram of the temperature rise rate depending on the size of the room.Even if the heater has the same rated output and the same room temperature, if the room size is different, the settings will be set as shown in curves A to B. The time it takes to reach temperature is different. Time A
In this case, the load (heater) is small compared to the rated output, and if the operation continues as it is, the on time will be short and the off time will be long.

If the load is turned on and off frequently, temperature differences in the room will occur frequently, making it impossible to obtain comfortable heating.

Further, the method of changing the operating output in stages requires electric circuits, parts, etc. for changing the operating output, and there is a problem that the device becomes complicated.

Furthermore, the on/off operation of the temperature sensor varies above and below the temperature set value, making it difficult to obtain comfortable temperature control.

Figure 8 is a diagram of the operating characteristics of the temperature sensor, as shown in the diagram.
The off-operation temperature T1 is approximately +5°C relative to the set temperature T.
The on-operation temperature T varies by about 15°C. If the set temperature T is 50°C, it will operate at 45 to 55°C and may turn on at 35 to 45°C, and in the worst case it will turn off at 55°C and will not drop to 35°C. Sometimes. In this case, the sense of temperature in the room is such that it turns off only when it becomes too hot, and turns on only when it becomes cold, making temperature control undesirable. It is often operated under such temperature-controlled conditions.

The present invention was devised in view of the above circumstances, and provides an automatic operation method for an air conditioner/heater that maintains a stable temperature for a long time in a comfortable condition by reducing the frequency of on/off control of the air conditioner/heater. It is intended to.

<Means for Solving the Problems> The automatic operation method for an air conditioner/heater according to the present invention includes a temperature detector that detects the room temperature, a counting unit that counts the energization time of the temperature detector and outputs a count signal, and a memory. Judgment department and
The apparatus includes an output switching section that switches the load based on the output of the storage judgment section, and the storage judgment section selects a plurality of types of count signals in advance and stores operational outputs set corresponding to each of the count signals. The present invention is characterized in that a preset operating output is selected based on the input count signal and output to the output switching section. The operating output is set so that the frequency of turning on and off the temperature sensor is extremely low based on the size of the room in which the air conditioner is installed, and the temperature sensor has a temperature sensor and a humidity sensor. It is characterized by a combination of sensors.

<Function> After startup, the counter section counts the time from when the temperature detector detects the set temperature until it turns off, and outputs a count signal to the memory judgment section.

The memory determining section selects an operating output that matches the input count signal, and outputs the operating output signal to the output switching section.

The output switching section switches the load based on the operation output signal.

<Example> Hereinafter, an example according to the present invention will be described with reference to the drawings.

Figure 1 is the electric circuit diagram of the air conditioner, Figure 2 is a side cross-sectional view of the machine, Figure 3 is a temperature rise characteristic diagram when the operating output of the heater is changed in the same room, and Figure 4 is the operation FIG. 5 is a flowchart of the method of the present invention, and FIG. 6 is an explanatory diagram of temperature changes during operation.

As shown in FIG. 2, the air conditioner/heater 10 according to the present invention (hereinafter simply referred to as this machine) includes a main body casing 11, a load I2, a blower 13, a temperature detector 20, a counting section 21, a memory determining section 22, and an output switching section. Contains 23. 14 is a cold air outlet, and 15 is an intake port.

As shown in FIG. 1, the temperature sensor 20 includes a counting section 21
and the output switching unit 23 are connected in series, and are provided near the air intake port 15 to detect the room temperature.

The counting unit 21 counts the time during which the load 12 is energized and outputs a count signal to the memory determining unit 22.
It is composed of an electronic circuit included in a built-in microcomputer (not shown).

In the memory determination unit 22, a plurality of types of count signals are selected in advance, and appropriate operating outputs are set and stored in correspondence with each of the count signals. Then, a preset operating output is selected based on the count signal output from the counting section 21, and the operating output signal is output to the output switching section 23.

The output switching section 23 switches the load 12 to the operating output based on the operating output signal of the memory determining section 22.

Next, the method of setting the count signal and the corresponding operating output will be explained using heating as an example.

In FIG. 3, curve A shows the maximum operating output, that is, the rated output, and curve G shows the minimum operating output.

The times when the curves A and G reach the off-operating temperature T of the post-start temperature sensor 20 are defined as TA and T, respectively, and the time between TA and T is divided into a plurality of finely divided sections (in the illustrated example, Tm, (Only T is shown and the others are omitted). Then, the count signals of the above-mentioned times T^, T, . . . TG are CA, C!, respectively. +, . . . C9, and set appropriate operating outputs corresponding to these count signals. The appropriate operating output is set based on experience or experimentation so that the frequency of on/off control of the temperature sensor 20 is minimized based on the size of the room.

FIG. 4 shows an example of the operating output set for each count signal CA, C111...C0, for example, rated output 1.
It starts with 2KW, reaches the off operation temperature T1 in the required time TE, and the temperature detector 20 turns off. The memory determination unit 22 selects the operating output of 600 W corresponding to the count signal C1.

When the temperature detector 20 is turned on, it is operated at an operating output of 600-.

Next, the operation of this device 10 will be explained according to the flowchart shown in FIG.

■First, set the temperature and turn on the device 10 at the rated output. The warm air that has been heat exchanged by the load 12 is blown out from the outlet 14. The temperature of the air flowing in from the intake port 15 is detected by a temperature detector 20. Counting section 21 is temperature detector 2
The required time is counted from the time of ON operation of 0.

■When the room temperature reaches the set temperature, the temperature detector 20 turns off. The counting section 21 counts the time required from turning on to turning off, and stores the count signal in the memory determining section 22.
Output to.

(2) The memory determining section 22 selects an appropriate operating output based on the count signal, and outputs the operating output signal to the output switching section 23.

(2) The temperature detector 20 cools down and reaches the ON operation temperature T2, and turns ON.

(2) The output switching unit 23 switches the load 12 to the operating output based on the operating output signal.

Next, we will discuss the differences between the method of the present invention and the conventional method in the sixth section.
This will be explained with reference to the figures.

The device 10 is turned on at the rated output, and the temperature sensor 20 is turned on at point P1.
is turned off for the first time, and time t is counted. Then, the temperature sensor 2o turns on for the second time at point Q1. The time t1 required for the temperature sensor 20 to reach the temperature below the knee is the same as the time t. The temperature rise state after point Q is different as follows.

That is, in the conventional method, it turns on again at the rated output at point Q1, turns off for the second time at point P2, and repeats turning on, turning off, and turning on at the interval time tb, as shown by the curved line. Therefore, the room temperature changes each time. On the other hand, in the method of the present invention, the point p.

When the time t is reached, a preset appropriate operating output is selected by counting the time t as described above.

Since it is operated using this operating output, a balance can be maintained between the cooling heat and heating capacity of the room. Therefore, as shown by the curved line, the temperature rises gradually from point Q1 onwards, and finally reaches the off-operating temperature T1. Therefore, the frequency of on/off control becomes extremely low, and a stable temperature range can be maintained for a long time.

Also, while the device 10 is being used in the same room, the ambient temperature changes depending on the time of day due to an increase or decrease in the number of people, etc., and the temperature rise rate of the curve changes, causing the temperature detector 20 to turn off for the second time at point P. Even if this occurs, an appropriate operating output is selected by the count signal sent from the counting section 21 to the output switching section 23 as described above, and after time t has elapsed, it is turned on at point Q. Therefore,
The on/off operation is not repeated as in the conventional case.

Although the above-mentioned operation has been explained for the case of heating, the same applies to the case of cooling. Further, in this embodiment, temperature is detected, but it is also possible to combine a temperature sensor with a humidity sensor and automatically control humidity in the same manner as described above.

<Effects of the Invention> As explained above, the automatic operation method for an air conditioner/heater according to the present invention includes a temperature detector, a counting section, a memory judgment section, and an output switching section, and allows the user to set the desired temperature. If you operate the unit, it will automatically select the appropriate operating output according to the size of the room, which will reduce the frequency of on/off operations and reduce the range of room temperature fluctuations, making it more comfortable to use.

[Brief explanation of drawings]

1 to 6 are drawings related to the present invention, in which FIG. 1 is an electric circuit diagram of the air conditioner, FIG. 2 is a side sectional view of the air conditioner, and FIG. FIG. 4 is a diagram illustrating the temperature rise characteristic when changing the operating output, FIG. 4 is a diagram illustrating the selection of the operating output, FIG. 5 is a flowchart of the method of the present invention, and FIG. 6 is an explanatory diagram of temperature change during operation. FIGS. 7 and 8 are drawings related to the prior art, in which FIG. 7 is a diagram comparing the temperature rise rate with respect to the size of the room, and FIG. 8 is a diagram showing the operating characteristics of the temperature sensor. 10...Air conditioner/heater 12...Load 13...Blower 20...Temperature detector 21...Counter section 22...Memory judgment section 23...Output switching section Figure 1 Fumon Figure 3 Figure 2 Figure 4 Figure 5-〉Kitei Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) A temperature detector that detects room temperature, a counting unit that counts the energization time of the temperature detector and outputs a count signal, a memory judgment unit, and an output switching unit that switches the load based on the output of the memory judgment unit. The storage determination unit has a plurality of types of count signals selected in advance and operational outputs set corresponding to each of the count signals stored therein, and is preset based on the input count signals. 1. An automatic operation method for an air-conditioning/heating machine, characterized in that the selected operating output is selected and outputted to an output switching section. (2) Automatic operation of the air conditioner and heater according to claim 1, wherein the operating output is set so that the frequency of turning on and off the temperature sensor is extremely low based on the size of the room in which the air conditioner is installed. Method. (3) The automatic operation method for an air conditioner/heater according to claim 1, wherein the temperature detector is a combination of a temperature sensor and a humidity sensor.