JPS5950902B2 - air conditioner - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for controlling air conditioner operation after automatic stop of air conditioner operation until resumption of operation at special times such as during sleeping time when air conditioner operation is automatically started and stopped by a temperature controller. This invention relates to an air conditioner with a control function that can enhance comfort during downtime.

(Prior art) When looking at an air conditioner, for example, an air conditioner, when the user wants to go to bed while the indoor temperature is maintained at a desired appropriate temperature, the set temperature is normally readjusted to a slightly higher temperature. Furthermore, when a timer is installed, it is common practice to automatically stop the air conditioning operation completely one hour to several hours after going to bed.

This kind of adjustment operation is important because if you set the temperature controller to the same temperature as before going to bed, you will feel cold and it is not good for your health. This is done because the lack of water can cause people to catch a cold.

By the way, if you change the temperature setting on the temperature controller to a slightly higher temperature, you can prevent yourself from feeling chilly while driving.

However, when the compressor stops operating when the temperature drops to a certain level, the rise in room temperature is gradual and it usually takes a long time until the next compressor starts. Indoor humidity increases significantly compared to room temperature.

As a result, people who are sleeping feel hot and humid and feel uncomfortable.

In this case, in the case of an air conditioner where the compressor and indoor fan start and stop at the same time, the humidity in the air surrounding the sleeping person increases rapidly, making it impossible to avoid feeling extremely hot and humid. It is something.

(Objective of the Invention) In order to cope with the current situation, the present invention has been made with the technical objective of eliminating these defects. The main object of the present invention is to eliminate discomfort during special periods when the stop time of a vehicle is long, and to improve operating economy.

(Structure of the Invention) Therefore, as shown in FIG. 5, the present invention includes a room temperature detection means A for detecting the indoor temperature, and when the room temperature detected by the room temperature detection means A reaches a stop temperature point, the high temperature signal changes to the low temperature signal. , a temperature signal generating means B which switches from a low temperature signal to a high temperature signal when the return temperature point is reached and generates one of these signals, and generates a first time count signal within a set time, and generates a first time count signal when the set time elapses. A time limit setting means C generates a first time-up signal at the same time, and a surface temperature point between the return temperature point and the stop temperature point of the temperature signal generating means B is slightly reduced by the input signal of the first time count signal from the time limit setting means C. Counting is started by a temperature correction means I that forcibly sets only the temperature to a high value, a first time count signal from the time limit setting means C, and a low temperature signal from the temperature signal generation means B, and the temperature is increased. stop time counting means that is cleared by a high temperature signal input signal from signal generating means B and generates a second time-up signal when the count time elapses over a first reference time; and a second time-up signal from the stop time counting means. forced operation time counting means E which starts counting and generates a third time-up signal when the count time elapses over a second reference time; A signal for starting the cooling operation in response to an input signal of either the time-up signal or a third time-up signal of the low temperature signal from the temperature signal generating means B and the third time-up signal of the forced operation time counting means E. It includes a control means G that generates a signal to stop the cooling operation, and a compressor, the cooling is performed by the input signal of the signal to start the cooling operation of the control means G, and the cooling is performed by the input signal of the signal to stop the cooling operation. A cooling operation drive means H is provided to stop the air conditioner, and during times when the automatic operation time is set by a timer such as during sleeping, and during times when the room temperature rises slowly, the temperature signal generating means B automatically starts and stops the air conditioner. In addition, when the temperature control operation automatic stop continues for a first reference period, the temperature control operation is forcibly started, and this operation is started at the time when the temperature signal generating means B generates a low temperature signal, or after the second reference period has elapsed. The device is designed to perform forced operation that lasts up to 30 minutes.

(Example) Hereinafter, an air conditioner according to an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 shows a power system electrical circuit of an air conditioner according to an example of the air conditioner of the present invention, in which a compressor motor 1 is connected to a power source via normally open contacts 3a, 3a of an electromagnetic contactor 3; The indoor fan motor 2 is connected to a power source through the low speed tap L through the normally open contact 4a of the first electromagnetic contactor 4 and the normally closed contact 5b of the second electromagnetic contactor 5 in series, and the medium speed tap M is connected to the power source through the normally open contact 4a of the first electromagnetic contactor 4 and the normally closed contact 5b of the second electromagnetic contactor 5. Normally open contact 4a of the first electromagnetic contactor 4 and normally open contact 5a of the second electromagnetic contactor 5
and the normally closed contact 6b of the third electromagnetic contactor 6 in series to the power supply, and the high speed tap H connects the normally open contact 4a of the first electromagnetic contactor 4 and the normally open contact 5a of the second electromagnetic contactor 5. and the normally open contact 6a of the third electromagnetic contactor 6 are connected in series to a power source, respectively.

Reference numeral 7 denotes a comfort indicator lamp disposed on the indoor unit side (not shown), which indicates a comfortable state by energizing an electromagnetic relay 8.

Note that 8a is a normally open contact of the electromagnetic relay 8.

The power system electric circuit described above corresponds to the cooling operation driving means H for starting and stopping the cooling operation.

A main part of a control circuit for controlling each of the electromagnetic contactors 3 to 6 and the electromagnetic contactor 8 is shown in FIG.

This control circuit includes a thermistor 18 as room temperature detection means A.
, a temperature regulator as temperature signal generating means B including a variable resistor 17 and a comparator 19, and a small central processing unit 1.
0 (hereinafter referred to as microcomputer 10), an operating keyboard section 11, a resistor R, and a transistor T.
It is equipped with a temperature correction means (1) connected in parallel to the resistor 17 and an output section 12, and these are housed together in a remote control box that is electrically connected to the main body of the air conditioner. .

The temperature controller and the operation keyboard section 11 are input elements of the microcomputer 10, and the high temperature signal and low temperature signal of the temperature controller are used to start and stop the compressor motor 1 and the indoor fan motor 2. It is input to the microcomputer 10 as an on signal, an off signal, a clear signal for the stop time counting means, and a count start signal. The keyboard 14 generates an on/off signal for manually starting and stopping the fan 1 and the indoor fan motor 2, and the keyboard 15 generates a signal for switching the air volume of the indoor fan to high, medium, and low air volume for a set time. After the elapsed time, compressor 1, indoor fan 2
Keyboard 1 also sends a temperature control operation signal that activates the on-timer circuit to start automatic air conditioning operation.
6 is a timer operation signal for activating an off timer as a time limit setting means C provided to stop automatic air conditioning operation after a set time elapses, in addition to a correction signal for correcting the temperature setting of the temperature controller. , are for inputting data to the microcomputer 10, and keyboards 15 and 16 constitute a switching means F.

The microcomputer 10, whose software will be made clear by the explanation based on FIG. It has a structure that includes ROM (read-only memory), RAM (read/write memory) for storing data, and input/output interfaces on a single chip.

This microcomputer 10 has a function of calculating a time limit setting means C, a stop time counting means, a forced operation time counting means E, and a control means C by operating keyboards 13 to 16.

Next, the operation mode of the above-mentioned air conditioner will be explained below with reference to each figure.

When the variable resistor 17 is adjusted with the operation knob and the set temperature of the temperature controller B is set to the desired value, the variable resistor 17
and a thermistor 18 for detecting the room temperature, electrical signals corresponding to the room temperature and the set temperature are outputted from the output of the bridge circuit, and both signals are sent to the comparator 19.
When the room temperature is high, a high temperature signal is generated, and when the room temperature is low, a low temperature signal is generated and input to the microcomputer 10.

When the microcomputer 10 receives the high temperature signal or the low temperature signal, it performs arithmetic processing, and if the room temperature is high, excites the coil 3R of the electromagnetic contactor 3, and each electromagnetic contactor 4. 5. The coils 4R, 5R, and 6R of No. 6 are selectively excited to energize the compressor and indoor fan, while when the room temperature is low, each electromagnetic contactor 3. 4. 5.
The coils 3R, 4R, 5R, and 6R of No. 6 are demagnetized to deenergize the compressor and the indoor fan.

When the air conditioner is running in this manner, when the resident is about to go to bed, he or she operates the keyboard 16 associated with the off timer 〇 as the time limit setting means C to memorize the time at which the air conditioner should be automatically stopped completely. Then, in conjunction with this operation, temperature correction is performed as described later, and a start command 20 is input to the microcomputer 10.

Here, the time limit length/shortening of the off timer C can be adjusted using the keyboard 16.
The microcomputer 10 may be provided with a processing function and a display function in advance so that the operation can be performed by increasing or decreasing the number of operations or by increasing or decreasing the continuous operation time, or by both.

The start command 20 is input and the micro-
When the output interface (OUTS) of the computer 10 is outputting the output 21 and the time setting of the off timer 〇 is completed, the microcomputer 10 is outputting the output to the input interface (INSO). When it is determined that this is the case (22), the stopping time after the cooling operation is automatically stopped is counted and the first reference time is set, for example, (24).
a stop time counting means D (hereinafter referred to as stop time timer D) that issues a second time-up signal when the minute elapses;
At the same time as clearing the forced operation time counting means E (hereinafter referred to as forced operation time timer E) which starts counting in response to the second time-up signal and issues a third time-up signal when a second reference time, for example, 3 minutes has elapsed, Set the off timer C 23° Simultaneously with this clearing and setting operation 23, issue an on signal to the output interface (OUT, T) 24° As a result, the transistor T1 inserted in parallel with the variable resistor 17 conducts and forces the set temperature in temperature regulator B to a slightly higher temperature side, for example by 2 degrees Celsius, thereby correcting the temperature.
The air conditioner starts and stops automatically based on a corrected temperature that is 2 to 3 degrees Celsius superimposed on the set temperature before going to bed.

If the room temperature is higher than the correction temperature, the input interface (I
NT) signal, that is, the output of the comparator 19 is turned off, is determined 25, and the output interface is determined 32.
Issues a command to start cooling operation and connects the output interface (OU
T,,1),(OUT.

An on signal is issued from 2) 33, and the compressor and indoor fan are forcibly energized to start cooling operation.

When the forced operation time timer E reaches the predetermined time limit of 3 minutes, the forced cooling operation stops. 29 If the forced operation time timer E has not reached the 3 minute time limit, the off timer 〇 is activated. It is determined whether it is in operation or has been released and restored 41, and whether it is in operation 38
Then, the forced operation timer E continues to count up and the off timer C continues to count down.39 Meanwhile,
If after recovery, the forced cooling operation will stop. 29. If the stop time timer D has not reached the 24-minute time limit, either the off timer C is operating and the timer D is counting up, or the timer D is counting up. Later, it is determined whether it has been reset (35), and if it is in operation, the count-up of the timer D and the countdown of the off-timer (0) are continued36.At the same time, an off signal is issued from the output interface37, and the cooling operation is stopped. On the other hand, if it has been reset after recovery, it switches to normal cooling operation (■) unrelated to off timer C.

The microcomputer 10 automatically processes the above-mentioned operating procedure to forcibly raise the set temperature slightly. When you are likely to feel hot and humid, for example while sleeping, the temperature controller B As a result, the room temperature fluctuation state changes as shown in Figure 4, and the period of temperature fluctuation becomes small, and the operation Unpleasant phenomena such as feeling hot and humid due to the increase in humidity during the gradual temperature rise process until restarting can be avoided, and a comfortable air-conditioned environment can thus be obtained.

(Effects of the Invention) The present invention has the configuration and operation described above, and when the air conditioning operation time is automatically set by the time setting means C such as a timer, the set temperature of the temperature signal generating means B such as a temperature controller is set. At the same time, when the air conditioning operation interruption time continues for a predetermined time within the set time of the time limit setting means C, the temperature signal generating means Since we set the air conditioning operation to start regardless of the command from B, taking air conditioning operation as an example, by performing the former temperature correction when sleeping, it is possible to prevent chills. ,
The latter forced operation is extremely effective in creating a comfortable environment by eliminating the stuffiness that can easily be felt when the temperature rises slowly.

Furthermore, running costs can be reduced, and the conventional inconvenience of creating an illusion as if a long-time stoppage phenomenon is interfering with the steady controlled operation of the air conditioner is also eliminated.

In addition, the present invention has the above-mentioned means compactly configured by a compact central processing unit, so that it can be easily incorporated into a conventional control box, etc. without any modification, and is compatible with the economical advantage of low cost.迟 means
It has tremendous practical value.

[Brief explanation of drawings]

1 and 2 are a power system circuit diagram and a control system circuit diagram according to an example of the air conditioner of the present invention, and FIG. 3 is an operation procedure diagram of the central ear treatment device in the control system circuit diagram shown in FIG.
FIG. 4 is a one-hour relationship diagram of temperature in an air-conditioned area showing the operating characteristics of an air conditioner according to an example of the air conditioner of the present invention, and FIG. 5 is a diagram clearly showing the configuration of the present invention. A...Room temperature detection means, B...Temperature signal generation means, C
... Time limit setting means, D... Stop time counting means,
E... Forced operation time counting means, G... Control means, H... Cooling operation driving means, ■... Temperature correction means.

Claims (1)

[Claims] 1. It has a room temperature detection means A that detects the room temperature, a return temperature point and a stop temperature point, and compares the room temperature detected by the room temperature detection means A with the above two temperature points, and determines when the room temperature reaches the stop temperature point. Temperature signal generating means B generates one of the high temperature signal and the low temperature signal by respectively switching from the high temperature signal to the low temperature signal and from the low temperature signal to the high temperature signal when the room temperature reaches the return temperature point; a time limit setting means C which generates a time count signal and generates a first time up signal when a set time elapses; and a first time limit signal from the time limit setting means C.
temperature correction means (2) for forcibly setting both the return temperature point and the stop temperature point of the temperature signal generation means B higher by a slight temperature in response to an input signal of a time count signal; and a first one of the time limit setting means C. Counting is started by a direct input signal of a time count signal and a low temperature signal from the temperature signal generating means B, and is cleared by an input signal of the high temperature signal from the temperature signal generating means B, and the counting time is reached when the first reference time elapses. The stop time counting means generates a second time up signal at the same time, and counting is started by a manual signal of the second time up signal from the stop time counting means, and when the count time elapses the second reference time, the third time up signal is output A signal for starting cooling operation based on an input signal of the generated forced operation time counting means E, a high temperature signal from the temperature signal generating means B, and a second time-up signal from the stop time counting means; a control means G that generates a signal to stop the cooling operation according to an input signal of either the low temperature signal from the temperature signal generation means B and the third time-up signal of the forced operation time counting means E; and a cooling operation driving means H that performs cooling in response to an input signal of a signal to start cooling operation of the control means G and stops cooling in response to an input signal of a signal to stop cooling operation. Machine.