JPS5847616B2 - Air conditioner temperature control method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and device for controlling the temperature of an air conditioner during cooling, and aims to perform ideal temperature control during cooling using a microcomputer. This is one of the purposes.

In general, the indoor comfortable temperature during cooling varies depending on the outdoor temperature. For example, when the outdoor temperature is 35°C, the indoor temperature is 27°C, and the outdoor temperature is 27°C. When the temperature is 23°C, the indoor temperature is 23°C, and when the outdoor temperature is 20°C, the indoor temperature is 20°C. It is being

By the way, in the conventional temperature control system, the air conditioner is operated for cooling by operating a switch using the human body's senses, and the desired room temperature is further adjusted by the human body's senses.

Therefore, since the room temperature control device performs absolute temperature control, even if the outdoor temperature fluctuates, the indoor temperature is controlled by the room temperature control device, resulting in excessive cooling.

This excessive cooling is undesirable, as it means that more capacity is supplied than necessary in terms of air conditioning capacity control, which wastes energy, and in particular, excessive cooling is a factor that has an adverse effect on the human body.

To solve this problem, you can change the operating temperature of the room temperature control device to an appropriate value each time depending on the fluctuations in the outdoor temperature.
This is of course a hassle and is currently not being carried out.

The present invention provides a method and device for controlling the operation of an air conditioner, which eliminates the drawbacks of the conventional air conditioners, provides the most ideal cooling for the human body, and eliminates wasteful energy consumption. It is something to do.

Hereinafter, the present invention will be described with reference to FIGS.
This will be explained with reference to FIG.

First, referring to FIG. 1, an outline of the operation control in the present invention will be explained.

In the figure, 1 is an operation switch, 2 is an indoor fan,
3 is a compressor, and 4 is an outdoor blower.

Here, the indoor side blower 2, compressor 3, and outdoor side blower 4 are each connected in parallel to the power supply side, and relays (relay contacts) R1, R2, and R3 are connected in series to each of them.

Reference numeral 5 denotes a microcomputer (hereinafter referred to as LSI) for turning on and off the relays R1, R2, and R3, in which a program necessary for air conditioning is set.

This LSI 5 and its program will be explained in detail later.

A transformer 6 serves as a power source for the LSI 5, and a diode bridge 7 is connected to it to convert it to direct current.

Here, the schematic structure of the air conditioner in this example will be explained as follows.
This will be explained based on Figure 5.

In the same figure, a indicates the indoor unit, and inside,
An indoor heat exchanger b, a pressure reducing device C consisting of a capillary tube, etc., and an indoor blower 2 are provided, respectively.

d is an outdoor unit that constitutes an air conditioner together with the indoor unit a, and includes a compressor 3 and an outdoor heat exchanger e1 that house a well-known refrigeration cycle together with the indoor heat exchanger b; A blower 4 is provided respectively.

Here, the indoor heat exchanger b serves as a cooling device during cooling.

The general operation of the above configuration will be explained.

First, when the operation switch 1 is turned on, the LSI 5 operates as configured in the program and controls the energization of the indoor blower 2, compressor 3, and outdoor blower 4.

This control is performed each time according to changes in the outdoor temperature.
The system makes decisions and controls the power supply to each device to maintain air conditioning conditions that are appropriate for the outdoor temperature conditions.

That is, the LSI 5 operates so as to obtain the characteristics shown in FIG. 12, and automatically performs control so that the indoor temperature matches the indoor target temperature.

The characteristics shown in Fig. 12 were discovered and graphed by the applicant based on the conventionally known suitable indoor temperature during cooling with respect to the outdoor temperature, and the values (indoor target temperature, etc.) can be set arbitrarily. ing.

Next, the operating section will be explained based on FIG. 2.

Figure 2 shows the operation panel of the operation section, which includes an operation switch 1a for manually controlling the operation of the indoor fan 2 and a sliding or push-type room temperature adjustment notch for adjusting the indoor temperature to a desired temperature, as in the conventional case. 1b are provided respectively.

In this embodiment, if you move the room temperature adjustment notch 1b to the left,
If you turn it to the right, it will be set to ``High'' (high operating temperature), and if you move it to the right, it will be set to ``Low'' (low operating temperature).If you set it to 5 notches in the middle, operation control will be automatically performed based on the characteristics shown in 5 notches in Figure 12. This is done in a specific manner.

The system will be explained in detail later.

Further, the operation panel is provided with a display lamp L for displaying the current operation, which lights up when cooling is being performed.

Further, on the operation panel, there is a control changeover switch for switching between automatic and manual control so that the automatic control by the LSI 5 described above can also be controlled by an indoor thermostat (not shown) in terms of absolute temperature as in the past, as shown in FIG. 1C is provided.

Next, a detailed explanation of the general operation shown in FIG. 1 will be explained based on FIGS. 3 and 4.

Figure 3 shows the relationship between LSI 5 and its peripheral elements.
Its peripheral elements include a temperature sensor section 8 that detects indoor temperature and outdoor temperature, and an A-D converter section 9 that converts the output of the temperature sensor section 8 from A to D and inputs it to the LSI 5.
(conversion characteristics are shown in FIG. 5), a control switching element 10 (which may also serve as a control switch if necessary) that inputs a signal from the control switch 1c that switches between automatic and manual to the LSI 5; Receiving the signal from the room temperature control notch 1b,
The encoder sections 11 input to the LSI 5 are each L
It is provided on the input side of SI5.

Further, on the output side of the LSI 5, each relay R1, which receives a signal judged within the LS5, corresponds to the judgment result.
An interface section 12 is provided that operates R2 and R3 (collectively referred to as relay R).

The operation of the relay R causes the corresponding load L (first
The indoor blower 2 shown in the figure) operates.

Furthermore, on the output side of the LSI 5, a decoder unit 1 inputs the timing of inputting the indoor temperature and the timing of inputting the outside temperature.
This is done through 3.

That is, when the input to the decoder section 130 is at a high level, the indoor temperature is input, and when the input to the decoder section 130 is at a low level, the outdoor temperature is input.

Note that VDD is the input power supply circuit of the LSI 5, and Vss is the ground.

When the circuit shown in FIG. 3 is implemented, it becomes as shown in FIG. 4.

The temperature sensor section 8 is formed of a room temperature thermistor 8a and an outside temperature thermistor 8b, and the output of the temperature sensor section 8 converts the temperature into a resistance value, and further converts the change in the resistance value into an A-D converter section 8. (including a V-F converter 14 described later) is converted into a voltage by an operational amplifier, and is input to the decoder section 13.

The decoder section 13 receives the output signal from the output terminal C1 and the port of the LSI 5, and selects either the voltage corresponding to the outside temperature or the voltage corresponding to the indoor temperature, which is input from the temperature sensor section 8. -V-F constituting the D converter 9
Output to converter 14.

This V-F converter 14 converts the analog input (voltage) from the decoder section 13 into a digital output (frequency) and inputs it to the SNS terminal of the LS 5.

The input of this SNS1 terminal is the internal counter (
(not shown in FIG. 4 for later explanation) is converted into temperature frequency.

Next, LS5 will be explained based on FIG.

VDD indicates the input power supply circuit to LSI5 as described above,
vss indicates a ground terminal.

Further, the SNS1 terminal represents the input terminal for the pulses converted from AD as described above, the A port and the B port each represent input, and the C port represents output.

(There are other outputs in addition to the C port, which are not shown in the figure.

)ROM is a memory that stores control instructions (hereinafter simply referred to as ROM).
), in which various control flows (details will be described later) are stored.

RAM indicates random access memory that stores data necessary for controlling the system.

The ALU is an arithmetic logic unit section (hereinafter simply referred to as ALU) that processes and makes decisions for each type of data stored in the random access memory RAM (hereinafter simply referred to as RAM).

ACC indicates a register (hereinafter simply referred to as ACC) that handles data processed during the operation of the LSI5, and COUNT
TER indicates an internal counter that converts the input pulse from the SNS terminal into temperature and frequency as described above.

Since this LSI 5 has been introduced in the technical field through literature and the like, detailed explanation thereof will be omitted.

Here, the operation of this LSI 5 will be explained very briefly.

According to the ROM command, the outdoor temperature and indoor temperature are input from the A port input, B port input, and SNS1 terminal, and once these inputs are stored in the RAM, it is determined what operation mode should be set, and the result is output. Output from C port.

Each device of the air conditioner is controlled depending on the type of signal output from this C port.

Air conditioning control will be explained in detail later.

Next, the seventh section explains how each device of the air conditioner is controlled.
This will be explained based on the diagram.

In this FIG. 7, ventilation operation control is shown as an example, and C
1 and C2 each indicate the C port output of the LSI 5.

R1 and R2 indicate relays that drive the indoor blower 2 and compressor 3, respectively, and 15 is a light emitting diode that displays the operating status.

Since this light emitting diode 15 serves as an indication during operation, it corresponds to the indicator lamp L in FIG. 2.

Therefore, when a cooling command is output from LS5, relays R1 and R2 are activated via the switching circuit from each output terminal C1 and C2, and the indoor blower 2 and compressor 3 are respectively driven to perform cooling operation. It is done.

Next, the control structure of the entire LSI will be explained by summarizing each of the above individual controls based on FIG.

In the same figure, the ROM is used for various control flows (
To give an example of an example where a command (command) is stored at a predetermined address, an incidental command (command) based on a command to operate the air conditioner
For example, a large number of instructions (such as commands for controlling intermittent operation of a compressor) are stored in a predetermined location.

Note that commands not mentioned here will be explained each time in the following explanation.

As mentioned above, the RAM stores various data necessary for controlling the operation of the air conditioner each time.One example is the outside air temperature, indoor temperature, and other data such as the indoor blower and compression installed in the air conditioner. The operating status of equipment such as machines is stored each time.

As mentioned above, the ALU functions as a comparator that compares each type of data stored in the RAM with the commands from the ROM, and based on the results, the ROM issues commands corresponding to the results.

For example, the outside temperature stored in the RAM is compared with the temperature stored in the ROM, and as a result, if the outside temperature is lower than the temperature commanded by the ROM, the ROM issues a command for heating operation.

PS, CF, and ZF are flags (hereinafter simply referred to as PS).
, CF, ZF), the ALU compared RAM and R.
It determines whether the results of OM data match or do not match.
Based on this determination result, the ROM issues a different command again.

An example of this is the above-mentioned cooling operation command.

Here, the description of PS is omitted because it has no relation to temperature control.

C is a conveyor that determines whether two signals match and notifies the ROM of the result;
Regarding F, the comparison result of the ALU is notified to the ROM.

ACC is an accumulator (hereinafter simply referred to as ACC),
Performs various data processing.

COUNTER indicates a counter as described above, which converts the input pulse into temperature and inputs the data to the RAM.

CLOCKGEN is a clock generator (hereinafter simply CLOC) that controls the adjustment of the operation timing of each element of the LSI.
K GEN).

X and Y are registers (hereinafter referred to as X register and Y register), respectively, and an input location M (hereinafter referred to as address) is set when external input is stored in the RAM.

In other words, to explain the RAM, as shown in FIG. is stored within the specified address.

In addition, other elements (STACK, SP, MPX, PC,
IR, S, G, SF, E/DFF
, T/C, DEC, L, TEMP, INS
TRUCTION PLA) is a microcomputer, but since it has no particularly deep relationship with the temperature control of the present invention, its explanation will be omitted.

The microcomputer shown in FIG. 8 has an input side and an output side as described above, and the input side has a 4-pit A.

~3 ports, also 4 pit B. ~3 ports and each terminal SNSo, SNS1, CSLCT, TST, RS
It consists of T, OSC, VDD, and VSS, and the output side is C with 12 pits.

~11, 8 pits Do~7 ports, and 4 pits E
.

It is configured with ~3 ports.

Next, we will explain each terminal on the input side.A
As shown in FIG. 9, a signal indicating whether temperature control is to be performed automatically or manually is input to the port, and the LSI 5 is operated automatically or manually depending on the type of input.

If automatic control is used, air conditioning operation is performed based on the characteristic curve shown in FIG. 12, and if manual control is used, air conditioning operation is performed based on the characteristic curve shown in FIG. 13.

Since this automatic/manual control will be explained later, the explanation here will be omitted.

Regarding the B port, a signal corresponding to the control of the room temperature control notch 1b is input to the LSI 5 as shown in FIG.

In other words, a signal is input which is determined by the user to which of the characteristic curves shown in FIG. 12 the driving control is to be performed.

Here, in this embodiment, the room temperature adjustment notches 1b are 1 to 9.
Although the number of notches is limited to this range, the number of notches is not limited to this range.

To explain the signal input to this B port, B
Since the port has 4 pits, 000 when there is 1 notch.
0010 for 1 or 2 notches, 00 for 3 notches
11, 0100 for 4 notches, 0 for 5 notches
101, 6 notches can be expressed as 0110, 7 notches can be expressed as 0111, 8 notches can be expressed as 1000, and 9 notches can be expressed as 1001, respectively.

Upon receiving one of these signals, the ROM instructs which operating mode to use.

Furthermore, signals obtained by converting the indoor temperature and outdoor temperature, which have been A-to-digital converted into frequencies, are input to the terminal SNS1 as described above.

For convenience of explanation, the converted signals will be referred to as indoor temperature and outdoor temperature below.

Terminal RST is a reset terminal, which allows the ROM to operate from the command at address 1 when the air conditioner is turned on.
Reset the ROM.

The terminal OSC is the input terminal of the CLOCK GEN, and the VD
D l vss are the power supply and power supply of the LSI 5, respectively, as described above.

Next, to explain the output side of the LSI 5, the C port of the 12 pits has relays R1, R2, which control the operation of each device such as the indoor blower 2, compressor 3, outdoor blower 4, etc., as shown in FIG. R3 are connected to each other.

Each of these devices is not limited to the C port, but other output side D
It may also be connected to the E port.

The ROM commands which output port to output the output from, and in this embodiment, for convenience of explanation, port D and port E are used.
Omit explanation about ports.

Next, temperature control by the microcomputer is shown in Figures 1, 3, 8, 12, 14, and 15.
This will be explained with reference to the diagram.

First, when the operation switch 1 is turned on, a reset signal and power source for the LS 5 are inputted from the terminals RST and VDD, respectively.

At the same time, various data specified at each address of the RAM are inputted from the A port and stored.

Since this data is temperature controlled, it is the outdoor temperature and indoor temperature.

The ROM first compares and determines whether all data input to the RAM has been completed, and if the comparison result is NO, it issues a command to input data to the RAM again, and if YES, issues the next command.

That is, when YES-, the ROM command inputs the data in the RAM to a predetermined location, inputs the number of room temperature notches from the B port, determines the linear function change in the outdoor temperature shown in FIG. A boundary value temperature that is constant (in this embodiment, the boundary value temperature is 35° C. since the automatic control is set to 5 notches as standard) is set and stored at a designated address in the RAM.

The ROM then determines whether the operation control is automatic or manual.

This determination may be performed in parallel to determine the notch input, if necessary (manual control will be explained later).

Due to the judgment that it is automatic control of ROM, ROM is R
A command is given to AM to set an indoor target temperature corresponding to the current outdoor temperature.

Upon receiving this command, the RAM performs calculations based on a predetermined calculation formula (details will be explained later) using the ALU and stores the set indoor target temperature.

For example, when the outdoor temperature is 24°C, the indoor target temperature is calculated to be approximately 21.3°C, and the RAM stores 21.3°C at a predetermined address.

When the setting of the indoor target temperature is completed, the ROM outputs a signal necessary for the cooling operation from the C port based on the input data of the RAM, and controls the operation of the equipment necessary for the cooling operation.

The respective devices are driven by relays R1, R2, and R3 corresponding to the indoor blower 2, compressor 3, indoor blower 4, and the like.

Due to the above-mentioned signal flow, the refrigerant flows as shown by the solid arrow in FIG. 15 to perform the cooling operation, but the above-mentioned flow signals are always repeatedly flowing in the cooling operation control.

When the cooling action progresses and the indoor temperature reaches the indoor target temperature (21.3° C. in this case), the cooling operation is controlled by measures such as stopping the compressor 3.

When the indoor temperature rises further, the RAM detects this and
Cooling operation is started again according to the ROM command.

Here, the outdoor temperature is constantly changing, and the indoor target temperature also changes with the change in the outdoor temperature.

Therefore, it is necessary to change the indoor target temperature to follow changes in the outdoor temperature.

As mentioned at the beginning, the tracking state preferably has the characteristics shown in FIG. 12.

Next, based on FIG. 12, setting of the indoor target temperature of the ROM will be explained.

During cooling operation, the indoor target temperature fluctuates particularly sharply, and the outdoor temperature in the diagram constantly changes within the range from the temperature that requires cooling (for example, 21°C) to the boundary value temperature of 35°C that keeps the cooling capacity constant.

Here, since the indoor target temperature is constant at 27°C when the outdoor temperature is 35°C or higher, a command to set the indoor target temperature to 27°C when the outdoor temperature is 35°C or higher is stored in a specified location in the ROM. Just leave it there.

And the outdoor temperature that becomes a problem is the temperature that requires cooling 2 1
Setting the indoor target temperature for the range of 'C to 35℃ is as follows:
Do it as follows.

First, the relationship between temperatures in the outdoor temperature range of 21° C. to 35° C. in FIG. 12 is expressed as follows.

Therefore, if a command is stored in a predetermined location in the ROM to set the indoor target temperature based on the above linear function equation when the outdoor temperature is in the range of 21°C to 35°C in the cooling operation range, the cooling operation can be performed. Even if the outdoor temperature sometimes fluctuates, the indoor target temperature can be set each time the temperature changes.

Here, it goes without saying that in setting this indoor target temperature, calculations are performed many times in the RAM.
The detailed explanation will be omitted.

Therefore, even if the outside temperature fluctuates during cooling operation, the ROM always repeatedly outputs the command to set the indoor target temperature stored in a predetermined location, so when the temperature fluctuates, the RAM inputs the data. Calculate and set the indoor target temperature immediately.

That is, in order to control the operation of each device so that the indoor temperature reaches the indoor target temperature set by the RAM, the ROM issues a command to operate the compressor 3 for a long time, for example, when a larger cooling capacity is required. It is something.

In the above explanation, automatic control during cooling operation has been explained, but this operation control is based on the characteristics shown in Fig. 12 (set to 5 notches in this example) that a standard person feels is best. Naturally, there may be cases where this control is not completely satisfactory.

Therefore, in this embodiment, the room temperature adjustment notch is set to 1 to 9.
It is divided into nine stages and nine types of automatic control can be performed.

Of course, manual temperature control is also possible, but this manual control will be explained later.

For convenience of explanation, automatic control at both ends, 1 notch and 9 notches, will be described below (the middle 5 notches will be omitted since they have been explained as above).

) First, 9-notch sets the indoor target temperature to the lowest level, and the degree of decrease can be determined arbitrarily, but in this example, the lowest temperature within the range that can be considered with common sense is set, The temperature is set to be 2°C to 3°C lower than the indoor target temperature at the outdoor temperature compared to when the temperature was not reached.

That is, as shown in the characteristic diagram of the 9-notch in Figure 12, when the outdoor temperature is 35°C or higher, the upper limit temperature of the air conditioner is set to 25°C, compared to 27°C for the 5-notch, and when the outdoor temperature is 20°C.
In the range of ~35°C, the relationship between outdoor temperature and indoor target temperature is the same as in the case of 5 notches above.

The relationship between

This relationship may be set arbitrarily.

If the above characteristics are stored in a predetermined location in the ROM as in the case of the 5-notch model, even when controlling the room temperature of the 9-notch model, the ROM commands the RAM to input data and the R.
The ROM sequentially controls the operation of each device based on the input data of the AM.

In this case as well, the ROM sequentially repeats the commands in the order shown in FIG.
AM continues calculation and sets the indoor target temperature each time, and R
OM controls the operation of each device.

Next, one notch with the highest indoor target temperature will be explained.

For this one notch, the indoor target temperature can be set arbitrarily, but in this example, the indoor target temperature is set from 25°C to 32°C so that there is a difference of about 2°C from the outside air.
The range is set to .

Here, this one notch starts when the outdoor temperature reaches 27℃, and the outdoor temperature is between 24℃ and 27℃.
Stop operation of each device within this range.

This range provides sufficient comfort for those who desire one notch without having to specially operate each device.

Of course, the outdoor temperature range of 24°C to 27°C can also be made smaller.

Furthermore, when the outdoor temperature in the cooling region is in the range of 27°C to 35°C, the relationship between the outdoor temperature and the indoor target temperature is set as follows in this example, but this relationship (especially the coefficient) may be adjusted as necessary. It can also be changed (e.g. coefficient 7
15 One hundred may be made into stones).

In this embodiment, the indoor target temperature is set considering that it is preferable for those who desire one notch to set the indoor target temperature while maintaining this linear function relationship.

If the above characteristics are stored in a predetermined location in the ROM as in the case of a 5-notch device, even if the room temperature is adjusted by 1 notch, the ROM will command the RAM to input data and the R.
The ROM sequentially controls the operation of each device based on the input data of the AM.

In this case as well, the ROM continues to sequentially repeat commands in the order shown in FIG. Controls the operation of each device.

In the above description, both ends of the room temperature adjustment notch and the intermediate notch have been described, but the indoor target temperature of each of these intermediate notches may be set as appropriate.

When setting, care must be taken to ensure that the linear function characteristics for setting the indoor target temperature do not intersect with each other.

Further, the coefficients of the linear function characteristics are not limited to those of this embodiment, and may be arbitrarily determined.

In other words, the linear function for 2 to 714 notches can be set appropriately so that the coefficient becomes smaller as the number of notches increases between 100 and 100. The coefficients must be set so that the characteristics of each temporary function do not intersect.

Next, manual control will be explained.

This manual control places importance only on the indoor target temperature, as in the past, and is an absolute temperature control as shown in FIG.

There is no particular reason for setting the indoor target temperature in this manual control, but the 5-notch is based on what is widely known in general: it is set at 24°C, which is frequently used in conventional pressure-type thermostats. .

The same applies to other notches, and they are not particularly limited to these values.

Therefore, by storing the characteristics shown in Figure 13 in a predetermined location in the ROM, when the RAM inputs manual control data, the ROM will immediately issue a command to set the indoor target temperature as shown in Figure 13. and operate each device to ensure absolute temperature control? Control.

In this control, commands are issued in the same manner for all notches, but the addresses of the commands in the ROM are different so as to correspond to the notches.

The difference from automatic control here is that when the ROM commands cooling operation, it then determines whether to perform automatic control or manual control.

In this case, since the control is manual, the ROM stores the indoor target temperature of 24°C corresponding to the 5 notches stored in a predetermined location.
to be memorized.

Then, the difference between the indoor target temperature and the indoor temperature is calculated, and the ROM outputs operating instructions for each device based on the data.

The above signal flow is repeated to maintain the indoor temperature at the indoor target temperature.

In addition, in the case of 5-notch, the indoor target temperature is not set for the outdoor temperature range of 20°C to 27°C, but in that range, the operation of each device may be stopped as described above.
Additionally, a ventilation system or the like may be activated.

Furthermore, although the above manual control El was explained using 5 notches as an example, the control is similar for other notches, and R
The only difference is the command address of the indoor target temperature output from the OM.

Further, the indoor target temperature may be set arbitrarily.

Furthermore, the notch may be selected arbitrarily during use.

Therefore, in the control according to this embodiment, if the setting is set to 5 notches by automatic control, a person with normal sense can automatically obtain a comfortable cooling effect, and the operation only needs to be performed at the beginning of operation. Improved usability.

In addition, even if you are not a standard user, if you select the desired temperature control and select Notch, you will automatically get the same comfortable cooling effect as described above, and there will be no need for switching operations, which is a hassle. Not at all.

Furthermore, even those who do not like such automatic control can still obtain absolute temperature control as in the past.

Therefore, a cooling effect suitable for people with all senses can be obtained.

In addition, automatic control operates to obtain temperature characteristics that correspond to the senses of the human body, so there is no inconvenience such as excessive cooling, and the air conditioner has extremely high efficiency with no wasted energy consumption.

As is clear from the above embodiments, the temperature control method and device for an air conditioner of the present invention sets an indoor target temperature consisting of a linear function value proportional to fluctuations in outdoor temperature during cooling operation, and The system operates the air conditioner until the indoor temperature reaches the target indoor temperature.It follows fluctuations in outdoor temperature and maintains the indoor temperature at the optimal temperature relative to the outdoor temperature at that time. This allows efficient control of energy consumption.

In addition, since the linear function coefficient of the indoor target temperature is set smaller than 1, the indoor temperature is controlled so that the difference increases as the outdoor temperature rises, and compared to when the linear function coefficient was set larger than 1. The difference between indoor and outdoor temperatures can be reduced, and the shock to heat 1 can also be reduced.
Moreover, the change in the difference is gentle, increasing comfort.

In addition, since the linear function coefficient of the indoor target temperature can be changed within a range smaller than 1 using the room temperature adjustment notch, the user can arbitrarily set the degree of difference between the outdoor temperature and the indoor target temperature as the outdoor temperature increases. This provides a wide range of comfort options, improves usability, and eliminates the discomfort caused by insufficient air conditioning.

Furthermore, the indoor target temperature becomes a constant value according to the room temperature adjustment notch when the outdoor temperature rises above the set value, regardless of the room temperature adjustment notch, so the minimum cooling effect is reliably achieved and discomfort is reduced. It has various advantages, such as not having to deal with any problems.

[Brief explanation of drawings]

Fig. 1 is a schematic electrical circuit diagram of an air conditioner equipped with a control device according to an embodiment of the present invention, Fig. 2 is a front view of the operating section of the control device, and Fig. 3 is a signal flow in the control device. FIG. 4 is a schematic electrical circuit diagram that slightly embodies FIG. 3, and FIG. 5 is a block diagram showing the V-
A V-F conversion characteristic diagram of the F converter, Fig. 6 is a schematic explanatory diagram of the microcomputer in the control device, Fig. 7 is a schematic electrical circuit diagram showing the operational relationship of the control device and some devices, and Fig. 8 is a An explanatory diagram of the flow of signals inside the microcomputer, Fig. 9 is an explanatory diagram of switching between automatic control and manual control in the microcomputer, and Fig. 10 is an explanatory diagram showing the relationship between the microcomputer and the room temperature adjustment notch in the control device. 11 is an explanatory diagram of the RAM word in the same microcomputer, FIG. 12 is a characteristic diagram of temperature control by automatic control of the same control device, FIG. 13 is a characteristic diagram of temperature control by manual control of the same control device, FIG. 14 is a flowchart of control instructions of the microcomputer in the control device, and FIG. 15 is a schematic structural diagram of an air conditioner whose temperature is controlled by the control device. 1b...Room temperature adjustment notch, 5...Microcomputer (control device), 8...Temperature sensor unit (temperature detection means), ROM...Storage means , ALU...discrimination means, T1...outdoor temperature, T2...indoor target temperature, b...
Indoor heat exchanger (cooling device).

Claims (1)

[Scope of Claims] 1. Signals from both the outdoor temperature detection means for detecting the outdoor temperature during cooling operation and the indoor temperature detection means for detecting the indoor temperature are input, and these input signals are processed by a microcomputer. Once stored and calculated, the indoor target temperature is set as a linear function value proportional to the outdoor temperature.
In this temperature control method in which the cooling device is operated until the indoor temperature reaches a constantly fluctuating indoor target temperature, the linear function coefficient of the indoor target temperature is set to a value smaller than 1, and when the outdoor temperature exceeds the set value, the microcontroller to keep the indoor target temperature at a constant value, and by switching the room temperature control notch, the linear function coefficient of the indoor target temperature is changed within a range smaller than 1, and furthermore, the outdoor temperature is set at or above the set value regardless of the operation of the room temperature control notch. A temperature control method for an air conditioner in which the indoor target temperature is set to a constant value by the microcomputer. 2. An outdoor temperature detection device that detects the outdoor temperature during cooling operation, and a calculation means that calculates input from the outdoor temperature detection device based on a linear function formula stored in advance and sets an indoor target temperature proportional to the outdoor temperature. , a room temperature adjustment notch for changing the coefficient of the linear function equation in a range smaller than 1, a storage means for storing an upper limit value of the indoor target temperature corresponding to the room temperature adjustment notch, and when the outdoor temperature is equal to or higher than a set value. a set temperature comparison means which outputs the temperature to the storage means and outputs it to the calculation means when the temperature is below the set value; an indoor temperature detection device which detects the indoor temperature during cooling operation; Comparing means for comparing the indoor temperature and the indoor target temperature set by the calculation means and comparing the indoor temperature and the upper limit value of the indoor target temperature stored in the storage means, and receiving the output of the comparing means as an input. A temperature control device for an air conditioner equipped with an operation control device that controls the operation of a cooling device.