JPS603135B2 - Automatic temperature setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic temperature setting device during automatic operation control of an air conditioner.

Conventionally, the operation of air conditioners has been individually controlled by manually setting the temperature controller, which has the drawback that if the set temperature is too low during cooling operation, the air conditioner becomes too cold, which can harm health and be uneconomical. was.

For this reason, today microcomputers are introduced to control the operation of air conditioners to set a healthy cooling temperature and automatically control the air conditioner at this temperature to eliminate the above drawbacks. The temperature is fixed at a constant temperature (for example, 270) regardless of the indoor temperature, so when the indoor temperature is extremely high (the perceived temperature is also high), the cooling operation is performed to eliminate the temperature difference all at once. Customers with high temperatures feel the air conditioner is too cold, and when the indoor temperature is low (below 27 degrees Celsius), no matter how many times the operation switch is turned on, the air conditioner does not go into cooling mode, giving the illusion that the air conditioner is malfunctioning. It was not possible. The present invention has been made in view of these points, and will be described below based on the drawings.

FIG. 1 is a block diagram, in which 1 is a positive characteristic thermistor for detecting indoor temperature, 2a to 2g are arithmetic comparators to which signals from the thermistor are input via an intensifier 3, and 4a to
4g is a bias resistor that applies a reference voltage to each of the comparators, and these constitute the room temperature detection means. 5a-5
g is an output transistor that receives the outputs of these comparators via the gate circuit 6 and conducts them; s a to 7g are light emitting diodes for indicating indoor temperature that light up when the transistors are conductive;
As shown in FIG. 2, it illuminates the indoor temperature display section 7 located at the lower right side of the front of the air conditioner 8.

On the other hand, ga to gc are arithmetic comparators to which signals from the multiplier 3 are input via the gate circuit IQ;
are bias resistors that apply reference pressures to the comparators, respectively; 12a;
-i2c are control transistors that are turned on when the automatic temperature setting switch 13 is turned on, and these constitute a temperature setting means.

14a to 14c are output transistors ?5a to 1 which receive the outputs of the comparators when these transistors are conductive.
5c is a light emitting diode for displaying the set temperature that lights up when the transistor is conductive. 16a? 16b is a control diode that lights only one light emitting diode.

The gate circuit 6 is turned on when the operation power switch 17 is turned on, and the other gate circuit 1M is connected to the reverse contact 18 which is turned on when the operation power switch 17 is opened. The recovery means is comprised of a timer 20 which inputs the time up to the AND circuit 19, and a set circuit 21 which delays and turns off the timer 20 when the operation power switch 7 is turned on.

22 is a room temperature memory section into which output signals from the arithmetic comparators 2a to 2g are input, and 23 is an arithmetic comparator 9a.
The temperature setting memory section 24 inputting the output signals from the two memory sections 9c is a comparison controller that compares the output signals from both memory sections and controls the start/stop of the compressor 25 of the air conditioner.

10B indicates a DC power supply. Next, the circuit operation will be explained.

First, when the indoor temperature is as low as 24° C. or lower, the input voltage only exceeds the reference voltage by the resistor 4a, and only the arithmetic comparator 2a outputs an output, and the output transistor 5a becomes conductive (by turning on the operating fin source switch 17). (The gate circuit 6 is suitable for conductivity) and the light emitting diode 7a lights up only at 24q0 locations of the indoor temperature display section 7 shown in FIG.
o, the series resistor 4a. Since the input voltage exceeds the reference voltage by 4b, an output is also output from the arithmetic comparator 2b, and the light emitting diodes 7a, 24qo and 25qo of the indoor temperature display section 7,
7b lights up. Similarly, when the indoor temperature is 2600, the light emitting diodes 7c at 26oo locations are turned on by the arithmetic intensifier 2Con, and then the light emitting diodes 7c are turned on in this order until the indoor temperature reaches 3.
When the temperature is 0qo or more, all the indoor temperature display sections 7 are lit. Simultaneously turn on the operation power switch 17 and timer 20
Due to the time-up state of the sound, the AND circuit 19 turns ○N and the gate circuit 10 becomes conductive, so the signal from the multiplier 3 is input to the calculation comparators 9a to 9gc, and the temperature is automatically set. By turning on the switch 13, all of the control transistors 12a to 2c become conductive.

Therefore, ``For example, when the indoor temperature is low, such as 284 qo or less, immediately before or after automatic operation starts, the input voltage only exceeds the reference voltage by resistor 11a, and the arithmetic comparator 9
An output is output only from a, and conducts the output transistor amount 4a through the control transistor 12a, and the set temperature display section 8
5 out of 2630 light emitting diode tatami a for displaying set temperature
only lights up. In addition, when the indoor temperature immediately before (after) the start of automatic operation is between 28,500 and 31.4 oo, the input voltage exceeds the reference voltage by the series resistors 11a and 11b, so the arithmetic comparator 9b also outputs is output, and the output transistor 14b also becomes conductive, and the light emitting diode 15b for displaying the set temperature 270 lights up. At this time, the output transistor 4a is also suitable for conducting, but the current from the resistor 26 flows through the light emitting diode 1.
Since the voltage drop flows to the control diode 16a side, which has a lower voltage drop of about 1/2 than that of 5a, the light emitting diode 15a of 26q○
does not light up. Furthermore, when the indoor temperature immediately before (after) the start of automatic operation is as high as 31.5°C or higher, the series resistors 11a, 11b,
Since the input voltage exceeds the reference voltage for 1st pin c, the arithmetic comparator 9
An output is also output from c, and the output transistor 14c is also conductive.
The light emitting diode 15c for displaying the set temperature of 28qo lights up.

At this time, both of the output transistors 14a and 14b are conductive, but as described above, the current of the light emitting diode 15a is bypassed by the control diode 16a, and the current of the light emitting diode 15b is also bypassed by the control diode 16b, so both It also doesn't light up. In addition, in the above, when the operation power switch 17 is turned on, the timer 2 is delayed from the reset circuit 21 and turned FF, and the gate circuit 10' uses the AND circuit 1 90FF to read the indoor temperature immediately before (after) the start of operation. After that, it is turned off.

In this way, the third
As shown in the figure, the automatically set temperature is 2600, 27℃, 28℃.
The temperature is displayed by setting it to any of the three healthy cooling temperatures of q0 (for example, the lighting state shown in light ink in Figure 2 is when the indoor temperature is 28oo and the automatic setting temperature is 27:00).
At the same time, the comparison controller 24 compares the output signals of the temperature setting memory section 23 and the room temperature memory section 22 into which the set temperature and the room temperature are respectively input, and the room temperature is determined by the cold curtain operation. When the temperature drops and reaches the set temperature, the operation of the compressor 25 is automatically stopped.

If the indoor temperature rises above this set temperature due to shutdown, operation will automatically restart. Further, when the customer opens the operating power switch 17 to stop the operation during the cooling operation, the reverse contact 18 is turned on and the timer 20 is started.

After that, when the operation power switch 17 is turned on again within one hour when the time is up, the output from the timer 20 is in the zero state, so the gate circuit IQ' is maintained in the OFF state by the AND circuit 190FF, and the output is increased. The room temperature signal input from the device 3 to the temperature setting means is cut off, and the operation is restarted at the old set temperature before the operation was stopped, which is stored as data in the temperature setting memory section 23. This is to prevent it from getting too cold.For example, when the customer leaves the room for errands while the air conditioner is in comfortable cooling mode, which is thermocycled under the automatic setting temperature of 2, the power switch 1 is switched on.
Suppose that 7 is ○FF.

Then, within an hour, return to the room and turn on the power switch 17.
If the switch is turned on, the indoor temperature will rise during this time, but the temperature rise will generally be suppressed to within 3℃, so when this switch is turned on, the indoor temperature just before (after) the start of operation will be detected and the temperature will be set to 27℃. A problem occurs where the set temperature drops.

In other words, each time the customer repeatedly turns OFF and ON the operating power switch 17 for a short period of time, the set temperature drops by 1°C, which prevents the user from achieving the desired healthy cooling operation. . On the other hand, after one hour or more has passed since the operation was stopped, the indoor temperature has risen to approximately the same temperature as the previous state, so the indoor temperature immediately before (after) the power switch 17 is turned on is detected again and the automatic When it is necessary to determine the set temperature, the AND circuit 19 is turned on by the output signal from the timer 20 and the power switch IT is turned on, and the gate circuit 10 is turned on. This is done by calling.

In this way, the device of the present invention includes a room temperature detection means for detecting the indoor temperature, a temperature setting means for automatically changing the operating temperature based on a room temperature signal output from the room temperature detection means at the start of rolling rotation, and this temperature setting means. a comparison control means for controlling the operation of the compressor of the air conditioner by comparing the set temperature signal outputted from the room temperature signal with the room temperature signal; and a return time for manually returning the operating power switch from the OFF state to the ON state for a predetermined time. a return means that cuts the input of the room temperature signal to the temperature setting means when the temperature is within the range, and a return means that cuts the input of the room temperature signal to the temperature setting means, and when the input is cut by the return means, the old set temperature signal from before the operating power switch is turned off is used instead of the set temperature signal. and memory means for temperature setting which is input to the comparison control means, so that the operating temperature setting is automatically changed depending on the indoor temperature at the start of operation.
The customer can enjoy a comfortable cooling effect at this indoor temperature that matches the sensible temperature, and can perform healthy and economical cooling operation without getting too cold.

At the same time, if the return time to return the operating power switch from the OFF state to the ON state is within the specified time, turn it OFF.
Make sure that the operation restarts at the previous set temperature! This is extremely beneficial as it allows stable cooling operation to continue without unnecessary fluctuations in the automatically set temperature.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the apparatus of the present invention, FIG. 2 is an enlarged view of the temperature display section, and FIG. 3 is a characteristic diagram of the indoor temperature at the start of operation and the set temperature. 8... Air conditioner, 13... Automatic temperature setting switch, 17... Operation power switch. Figure 2 Figure 3

Claims (1)

[Claims] 1. A room temperature detection means for detecting the indoor temperature, a temperature setting means for automatically changing the operating temperature using a room temperature signal output from the room temperature detection means at the start of operation, and a temperature setting signal output from the temperature setting means. Comparison control means for controlling the operation of the compressor of the air conditioner by comparing the room temperature signal with the room temperature signal;
A return means cuts off the room temperature signal input to the temperature setting means when the return time for manually returning the operating power switch from the OFF state to the ON state is within a predetermined time; Power switch is OFF
An automatic temperature setting device comprising temperature setting memory means for inputting an old set temperature signal before F is input into the comparison control means instead of the set temperature signal.