JPS5854334B2 - air conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioner, and its object is to
An object of the present invention is to provide an air conditioner capable of controlling room temperature comfortably for a user.

With conventional air conditioners, especially when heating starts,
Even if the room temperature reaches the set value and the air conditioner stops operating, it takes time for the room's wall temperature, floor temperature, or so-called ambient temperature to rise sufficiently, making the user feel a little warmer. I couldn't do it.

Therefore, it was necessary to set the room temperature high when heating started, turn it off, and then return to the original room temperature setting after a certain period of time had passed.

The present invention has been developed to eliminate these drawbacks, and will be described below with reference to the drawings.

In Figure 1, 1 is a resistor, 2 is a variable resistor, and resistors 1,
The potential at the connection point aKf+ of the variable resistor 2 represents the set value of the room temperature, 3 is the resistance, 4 is the first sensor that detects the room temperature, and the potential at the connection point 1)Kh at the connection point between the resistor 3 and the first sensor 4 is 5 represents the room temperature, and 6 is a second sensor that detects the temperature of the air conditioner body, the temperature of the wall of the room, the floor temperature, etc., which normally shows a temperature lower than the room temperature. The potential applied to the connection point C of the second sensor 6 represents the temperature of the main body of the air conditioner, the wall of the room, the temperature of the floor, etc.

7. 8. 9 is an amplifier that amplifies the output signals from the connection points ay, bt, and C, respectively; 10 is an analog switch that reads the output signals from the amplifiers 7, 8, and 9 in a time-division manner;
11 is an AD converter that converts the analog signal from the analog switch 10 into a digital signal.

Reference numeral 12 denotes a one-chip microcomputer that has a control section 13, a calculation section 14, a memory section 15, etc., and is externally connected to an operation switch (not shown) for operating the air conditioner, and is controlled by the A-D converter 11. A signal is input from the input port, read from the control unit 13 to the analog switch 10, and a control signal is issued, and the connection point a? The output signal from byc is read in and the analog switch 10 is connected to the A-D converter 11.
The memory section 15 stores the control signal from the A-D converter 11, and the arithmetic section 14 converts the output signal from the A-D converter 1 from an analog signal to a digital signal.
The control signal from 1 and the data memory of the memory section 15 are compared and calculated.

16 is a transistor connected to the output port of the microcomputer 12, and is turned on and off by output signals from connection points a, b, and c; 17 is a transistor connected to the output port of the microcomputer 12;
It is an excitation winding that is energized and de-energized when turned on and off, and controls the air conditioner 18 by turning on and off the contact mechanism 17a.

Next, the operation of the air conditioner according to the present invention will be described.

When the air conditioner according to the present invention performs a heating operation, as shown in FIG. 2, the resistance value of the variable resistor 2 is set to an appropriate value, the room temperature T8 is set, and Then, when heating is started, the room temperature TR detected by the first sensor 4 is naturally detected.If the second sensor 6 detects the floor temperature and it is designated as TF, the floor temperature TF is lower than the set temperature T8.

If the temperature felt by the user at this time is the so-called sensible temperature TB, these temperatures have the following relationship: T8>TR>TB>TF.

Therefore, a control signal is output from the output port of the microcomputer 12, turning on the transistor 16 and turning on the excitation winding 1.
7 is excited and the air conditioner 18 is operated.

When the air conditioner 18 operates, the room temperature TR1 and the floor temperature TF rise, but as shown in FIG. 2, the rate of increase in the room temperature TR is higher than the rate of increase in the floor temperature TF, and the The sensible temperature TB that the person feels is in between these, and the difference between the room temperature TR and the floor temperature TF becomes larger as time passes.

According to instructions from the control unit 13 of the microcomputer 12,
The analog switch 10 is an amplifier 7. s, 5-e
- amplified connection points a, b;

The output signals generated by the potentials cK and b are read in a time-division manner.

The analog switch 10 sends the read input as an analog signal to the A-D converter 11, which converts it into a digital signal and sends it to the memory section 15 and calculation section 14 of the microcomputer 12.

The arithmetic unit 14 of the microcomputer 12 includes a memory unit 1
5 is compared with the control signal that enters the calculation unit 14, and when the difference between the room temperature TR and the floor temperature TF is greater than or equal to the value, the floor temperature TF detected by the second sensor 6 is calculated. Upon detection, the transistor 16 is made conductive, the excitation winding 17 is excited, and the air conditioner 18 is operated.

With the operation of the air conditioner 18, the room temperature TR increases over time.
The temperature TF of one floor increases together, but when the room temperature TR and the floor temperature TF are equal to or higher than the value, the microcomputer 12 operates the air conditioner 18 by detecting the floor temperature TF with the second sensor 6.

In addition, as long as the difference between the room temperature TR and the floor temperature TF is greater than or equal to the value, the microcomputer 12 operates the air conditioner 18 at the floor temperature TF, which is always lower than the room temperature TR, so the rate of increase in the room temperature TR increases. is expensive.

In addition, even if the room temperature TR exceeds the set room temperature T8, the microcomputer 12 keeps the floor temperature T determined by the second sensor 6.
Upon detection of F, the air conditioner 18 is activated.

The rise in the room temperature T8 has reached its limit, and the second sensor 6 detects the floor temperature TF, causing the microcomputer 12 to operate the air conditioner 18. As a result, the room temperature TR
When the difference between the room temperature Ts and the floor temperature TF becomes equal to or less than the value, the calculation unit 14 of the microcomputer 12 activates the air conditioner 18 based on the room temperature TR detected by the first sensor 4, and thereafter the room temperature Ts and the room temperature The arithmetic unit 14 of the microcomputer 12 performs a comparison operation with TR, and controls the air conditioner 18.

Figure 3 shows the room temperature, sensible temperature, and time versus time when only the room temperature is detected using a conventional sensor and the air conditioner is controlled.
This shows the behavior of the floor temperature.

As described above, the air conditioner according to the present invention detects the temperature of the floor with the second sensor when the difference between the room temperature detected by the first sensor and the temperature of the floor etc. detected by the second sensor is greater than or equal to the value. , the room temperature is controlled, and when the difference between the room temperature and the floor temperature is below the value, the fth sensor detects the room temperature and controls the room temperature, so the room temperature is controlled as in the conventional air conditioner. When the air conditioner reaches the set value, the air conditioner stops operating.In fact, it is not comfortable for the user because the temperature of the walls and floor of the room is low, so it is necessary to set the room temperature high in advance. After that, it was necessary to return to the normal setting value, but this is not the case and the indoor temperature can be adjusted comfortably for the user.

Additionally, at the time of startup, the difference between the room temperature detected by the first sensor and the floor temperature detected by the second sensor is greater than or equal to the value, and in this case, the air conditioner detects the floor temperature and controls the room temperature. The room temperature can reach the set value more quickly than in conventional air conditioners.

[Brief explanation of drawings]

Fig. 1 is an electrical control circuit diagram showing an embodiment of the air conditioner according to the present invention, Fig. 2 is a diagram showing temperature changes over time in the air conditioner according to the present invention, and Fig. 3 is a diagram showing temperature changes over time in the air conditioner according to the present invention. It is a figure showing temperature change with respect to. 2... Variable resistor, 4... First sensor, 6... Second sensor, 10... Analog switch, 11...
A-D converter, 12... microcomputer,
13... Control unit, 14... Arithmetic unit, 15... Memory unit, 16... Transistor, 18... Air conditioner.

Claims (1)

[Claims] 1. A first sensor that detects the room temperature, a second sensor that detects the temperature of the air conditioner body, the temperature of the wall of the room, the floor temperature, etc., which normally shows a temperature lower than the room temperature during heating, and the air conditioner. an operation switch for operating the harmonizing device;
At the start of operation by this switch operation, a calculation unit that compares and calculates the difference between the temperature detected by the first sensor and the temperature detected by the second sensor, and when the temperature difference is greater than the value, the second sensor An air conditioner comprising: a control unit that extracts a signal for controlling the operation of the air conditioner main body from each first sensor when the signal is less than or equal to a value equal to or below.