JPH07101119B2 - Air conditioner control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a control device for controlling the operation of this air conditioner with a wireless remote controller.

(B) Conventional technology Conventionally, as an air conditioner of this type, there is one disclosed in Japanese Utility Model Laid-Open No. 57-75335.

The contents are that the main body of the air conditioner is attached to a high place on the wall surface of the room, and the operation of this main body can be performed by the wireless remote controller at hand. The wireless remote controller has a built-in room temperature sensor, and the value detected by this sensor is transmitted to the main unit. Based on this value, the air conditioner is operated to control the temperature of the living space in the room. There is one that makes the operation of the air conditioner based on.

(C) Problems to be Solved by the Invention In this air conditioner, a signal was transmitted at intervals of about 3 minutes from the remote controller in order to minimize the power consumption (battery) of the wireless remote controller.

Therefore, even if the air-conditioning load fluctuates significantly due to people entering and leaving the room within 3 minutes from the signal being sent from the remote control until the next signal being sent, the air conditioner operation will immediately change to this fluctuation. If the operation is not controlled according to the above, and the operation according to the air conditioning load at this time is changed after 3 minutes, the changed operation is continued for at least 3 minutes. Even if the air-conditioning load was reduced within these 3 minutes, the operation could not be switched according to this reduction. As described above, a signal is transmitted from the wireless remote controller only once every three minutes in order to reduce the battery consumption, and it is difficult to perform fine operation control according to room temperature fluctuations.

An object of the present invention is to finely control the operation of an air conditioner in accordance with changes in room temperature while suppressing the number of transmissions from a wireless remote controller at the same intervals as in the conventional case.

(D) Means for Solving the Problems In order to achieve this object, the present invention provides a main body of an air conditioner with a first room temperature sensor, and a wireless remote controller for operating the main body with a second room temperature sensor. In the control device of the air conditioner, which is arranged so that the signal of the value detected by the second room temperature sensor is transmitted from the remote controller to the main body at regular time intervals, the signal is detected by the first room temperature sensor. Value from which the value detected by the second room temperature sensor is subtracted from the measured value, the operation starting means for starting the operation of the air conditioner based on the initial control value obtained by adding the set value of the indoor temperature, and the signal from the remote controller. Until the signal is transmitted, the operation of this air conditioner is controlled according to the difference between the initial control value and the detected value of the first room temperature sensor. Time delay due to the difference And an operation control means for controlling the operation of the air conditioner in accordance with the difference between the normal control value obtained by adding the room temperature set value to the set value of the room temperature and the detection value of the first room temperature sensor. Is.

(E) Action The operation control means starts the operation of the air conditioner, and after the operation control means starts the operation, until the signal is sent from the remote controller, the room temperature is set to the value obtained by adding the temperature difference between the two sensors. The operation is controlled, and after the signal is transmitted from the remote controller, the operation is controlled according to the increase or decrease in the temperature difference between the two sensors.

(F) Embodiment In FIG. 1, 1 is an indoor heat exchange unit (main body) installed on an indoor wall surface 2, which is connected to an outdoor heat exchange unit (not shown) by a refrigerant pipe and is a separation type air conditioner. Are configured. The main body 1 is provided with a suction port 3 on the upper front surface and an outlet 4 on the lower front surface. A first room temperature sensor for detecting the temperature of the air sucked from the suction port 3 is provided inside the main body connected to the suction port 3. The value detected by the first room temperature sensor is sent to the control unit (not shown) in the main body 1 once every 30 seconds. Reference numeral 5 denotes a wireless remote controller for controlling the operation of the air conditioner body 1, which is housed in a recess 6 on the front surface of the body 1. Reference numeral 7 is a receiving unit that receives a signal from the remote controller 5.

A transmitter 8 is provided above the transmitter 5. 9
Is an ON-OFF switch, and 10 is a door that rotates in the direction of the solid line arrow. Behind this door are operation buttons that change the set value of the room temperature, operation buttons that control the set time of the timer, and the wind speed. Operation buttons and are arranged. Reference numeral 11 is a ventilation grill for indoor air, and a second temperature sensor is built in this grill, and this sensor detects the indoor temperature around the remote controller 5. Then, the detected value is transmitted from the transmitter 8 to the receiver 7 of the main body 1 once every three minutes.

On the other hand, a compressor is built in the outdoor heat exchange unit (not shown). Then, during cooling operation, the rotation speed of the compressor is changed by input from a frequency conversion device that can vary the power supply frequency from 30 Hz to 110 Hz, and the refrigerating capacity is increased from 1320 kcal / h to
It can be changed to 2800 kcal / h. In addition, the refrigerating capacity is 1350cal / h-4300kcal / h with the input from the frequency output power supply device that can change the power supply frequency from 30Hz to 180Hz during heating operation.
It can be changed to. The power supply frequency input to the compressor at the start of the cooling and heating operations is the difference (Δ) between the room temperature (T) detected by the first room temperature sensor and the set temperature (T _s ).
It is set according to the value (ΔT ₁ ) obtained by adding the difference (ΔR) between the indoor temperature (T) and the temperature (T _R ) detected by the second indoor temperature sensor to (S), as shown in the table below. . In particular, at the start of heating operation, since the remote control is below the main body, the above-mentioned respective values have a relationship of T _S >T> T _R.

FIG. 2 is a flow chart showing the processing procedure of the heating operation control of the air conditioner, and the operation is mainly controlled by the operation start means and the operation control means along the flow chart.

In FIG. 2, when the operation of the air conditioner is started, the user inputs the set value (T _S ) of the indoor temperature determined by the user, and then the value of the temperature detected by the second temperature sensor of the remote controller 5. (T _R) to enter (step 20-22). Then, the 3-minute timer is started, and then the temperature (T) detected by the first room temperature sensor of the main body 1 is input (steps 23 to 24). Then, the value (T _R ) is subtracted from the temperature (T) to calculate ΔR, and the difference ΔR is added to the set value (T _S ) to calculate the initial control value (T ₁ ) (steps 25 to 26). .

Next, subtracting the temperature (T) from the initial control value (T ₁ ) Δ
T ₁ is calculated, and the compressor is driven at the power supply frequency corresponding to ΔT ₁ (see the previous table) (steps 27 to 28).

Then, it is judged whether or not the 3 minute timer has timed out, and if not, this step
If the time stays 29 and time is up, the next step 30
Go to (step 29). The control from steps 20 to 29 corresponds to the control from 0 to 3 minutes in FIG.

Next, enter the value (T _R ), start the 3-minute timer,
Enter the temperature (T) (steps 30-32). And Δ
R is calculated (this ΔR is the current ΔR, corresponding to that in FIG. 3), and the difference ΔM between the previous ΔR (corresponding to that in FIG. 3) and the current ΔR is calculated (steps 33 to 33).
34).

Next, the initial control value (T ₂ ) and ΔM / 5 are calculated, and the initial control value (T ₁ ) and ΔM / 5 are added to calculate the control value T _C (steps 35 to 37).

Next, start the 30-second timer and newly set ΔT _C (= T _C −
T) is calculated, the frequency is calculated based on the time transition (PID control) of ΔT _C , and the compressor is driven at this frequency (steps 38 to 41).

Then, it is judged whether or not 30 seconds have passed, and if it has not passed, the process stays in this step 42, and if it has passed, it goes to the next step 43 (step 42).

Next, it is judged whether the control value (T _C ) is equal to the normal control value (T ₂ ), and if they are equal, (T ₁ plus ΔM / 5 each is T
_{Because of C} , it goes to step 46 when it is judged to be equal in the fifth judgment, and goes to step 44 when it is judged not to be equal (during the first to fourth judgments) (step 43).

Then, it is judged whether or not the three-minute timer has timed out, and if the time has not expired, the routine proceeds to step 46, and if the timer has not expired, the routine proceeds to the next step 45 (step 44). In step 46, the previous T _C ΔM / 5 is added to make a new T _C, and after the lapse of this step 46, the process proceeds to step 38. In step 45, substitute the value of T ₂ for T ₁ ,
Go to step 30.

That is, in this flowchart, steps 20 → 21 → ...
→ 29 is the control flow from the start of operation to the 3rd minute, and steps 30 → 31 → …… → 41 → 42 are from the 3rd minute to 3rd.
The control is up to the 30th minute, and steps 43 → 46 → 38 → ……
→ 42 is the control from 3 minutes 30 seconds to 4 minutes. Below, 4 minutes to 4 minutes 30 seconds, 4 minutes 30 seconds to 5 minutes, 5
The control from the 5th minute to the 5th minute and 30th second is the same as the above-described control.
→ 46 → 38 → …… → Repeat until 42. At the time of 5 minutes and 30 seconds, it is determined that T _C = T _{2 in} step 43, so the procedure goes to step 44. At this time, since the 3-minute timer has not timed up, steps 38 → 39 → 40 → 41 → 41 are again performed. Go to. At the 6th minute after 30 seconds have passed, the procedure goes to steps 43 → 44 → 45. Then, from the sixth minute, the control is newly started by setting the previous T ₂ to T ₁ , and the process proceeds to step 30.

FIG. 3 shows the set value T _S of the room temperature when processed by such a flow chart, the value T detected by the first room temperature sensor, the value T _R detected by the second room temperature sensor, and the initial control value T ₁ , shows the relationship between the normal control value T _2, the operation at the start T _R is 20 ° C., T is 22 ° C.
Then, assuming that T _S is set to 24 ° C, the initial control value T ₁
(= T _S + (T-T _R ) is 24 ℃ + (22 ℃ -20 ℃) = 26 ℃, the set value T _{S of} room temperature is 24 ℃ from the start of operation for 3 minutes
Even with this, the operation of the air conditioner is controlled at the initial control value of 26 ° C.

After 3 minutes, when the value (21 ° C) detected by the second room temperature sensor in the remote controller 5 is input to the main body 1, ΔR (= T
-T _R ) becomes 24 ℃ -21 ℃ = 3 ℃, and it is decided that the normal control value is 24 ℃ + 3 ℃ = 27 ℃ within 2 minutes after this, and the set value (T _C ) is raised. As described above, when the temperature inside the main body 1 is higher than the temperature near the remote controller 5 although the room is heated by the start of operation, the normal control value T ₂ is sequentially increased from the initial control value T ₁ .

Further, as shown in FIG. 4, when the room is heated by the start of operation and the temperature rise near the remote controller 5 is larger than the temperature rise near the main body 1, the normal control value T ₂ is gradually lowered from the initial control value T _1. There is. That is, the operation is started under the same initial conditions as those shown in FIG.
23 ℃, the next two when the ΔR became 1 ℃ in the T _R is 22 ℃
The normal control value is set to 24 ° C + 1 ° C = 25 ° C by the minute, and the set value is lowered by 0.2 ° C every 30 seconds. The process from the middle of operation to the end of operation is not the subject matter of the present invention, and therefore its explanation is omitted.

(G) Effect of the Invention As described above, the present invention calculates the difference between the temperature detected by the first temperature sensor of the main body and the temperature detected by the second temperature sensor of the remote controller, and at the start of operation, the operation control means is used. While controlling the operation of this air conditioner with the initial operation control value that is the set value of room temperature plus the temperature difference between both sensors, the temperature of the temperature difference between the sensors is controlled by the operation control means while the signal is transmitted from the remote controller. The initial operation control value is changed according to the change (at the normal control value) to continue the operation of the air conditioner.

Therefore, even while the signal is transmitted from the remote controller, the control value is changed and the operation is finely controlled to reach this control value, so that fine temperature control can be performed according to the change in room temperature.

[Brief description of drawings]

The drawings show one embodiment of the air conditioner of the present invention, FIG. 1 is a perspective view showing the relationship between the air conditioner and a remote controller, and FIG. 2 (a).
(B) and (c) are flow charts showing the processing procedure of the heating operation control of the same machine, and FIG. 3 and FIG. 4 are explanatory diagrams showing the temperature changes in the room heated by this air conditioner. 1 ... Main body (indoor heat exchange unit), 3 ... Suction port,
5 ... Wireless remote control, 11 ... Ventilation grill.

Claims (1)

[Claims] 1. A temperature T detected by a first room temperature sensor provided in a main body of an air conditioner, and a remote controller provided with a second room temperature sensor and provided separately from the main body of the air conditioner. In an air conditioner control device that controls operation based on a temperature TR detected by the second room temperature sensor that is automatically transmitted at regular time intervals during operation of the air conditioner, output in response to operation of the remote controller When the signal for operating the air conditioner and the signal indicating the room temperature TR detected by the second room temperature sensor are received, the capability corresponding to the value obtained based on the set temperature TS and the temperature TR of the room temperature. With operation start means for starting operation of the air conditioner and maintaining this operation for a certain period of time,
A means for calculating a change ΔM of the difference between the temperature T and the temperature TR in each predetermined cycle, and an operation control for operating the air conditioner with the ability to be obtained based on the set temperature TS, the room temperature T, the room temperature TR, and the change ΔM × constant. Means, a correction means for increasing the constant in a predetermined cycle, and an operating capacity of the air conditioner is set to be an operation start means during the fixed time from the start of operation of the air conditioner,
A control device for an air conditioner, comprising: means for switching to a capacity obtained by an operation control means after a lapse of a certain time.