JPS609222B2 - Air conditioner temperature control method and device - Google Patents

Description

Detailed Description of the Invention The present invention relates to a temperature control method and device for an air conditioner, and provides comfortable air conditioning and temperature control by selectively operating heating and ventilation using a microcomputer. One of its purposes is to enable the implementation of

Conventionally, for heating, it has been known to control the indoor temperature, take into consideration the temperature of the indoor air, and operate a humidifier or the like in parallel. In addition to this, it is also known to take into consideration the pollution of indoor air and to perform appropriate ventilation. However, ventilation is only performed during heating;
When the outdoor temperature changes to a temperature that does not actually require heating, for example around the beginning of spring, heating may be started in the morning and continued into the afternoon, which reduces energy consumption. There is a lot of waste, and the resolution is also not good.

In view of the problems found in the conventional air conditioners, the present invention detects the outdoor temperature and performs heating operation if the temperature requires heating, and performs ventilation operation if the temperature does not require heating. This prevents wasteful energy consumption and provides comfortable air conditioning. Here, the schematic structure of the air conditioner in this example is shown in the 15th section.
This will be explained based on the diagram.

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., an indoor blower 2, and a ventilation device 5 are provided, respectively.

Here, in this embodiment, the ventilation device 5 has a structure in which a ventilation hole 5a penetrating the wall is opened and closed by a damper 5b, and air is forcibly taken in by an indoor fan 2, as shown in the figure. Relay R as a means
A solenoid 5c whose energization is controlled by 4 is used. d is an outdoor unit that constitutes an air conditioner together with the indoor unit a, and has the indoor heat exchanger b inside.
A compressor 3, an outdoor heat exchanger e, an outdoor blower 4, etc., which constitute a well-known refrigeration cycle, are also provided.The indoor heat exchanger b serves as a heating device during heating, and also serves as a ventilation device. 5 is not limited to the damper mechanism as in this embodiment, but may also include a configuration in which a ventilation fan is integrally incorporated or electrically connected as a separate body.

Further, the ventilation device 5 is not limited to the suction function, and may be used only for ventilation, and may also be capable of reversing the indoor blower 2 or the ventilation fan to perform suction and exhaustion, if necessary. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1 to 14 of the accompanying drawings showing one embodiment thereof.

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

In the figure, L I is an operation switch, 2 is an indoor blower, 3 is a compressor that forms a heating cycle, 4 is an outdoor blower, 5 is a ventilation device such as a ventilation damper, and 6 is a heater that serves as an auxiliary heat source during heating. It is.

Here, the indoor blower 2, the compressor 3, the outdoor blower 4, the ventilation device 5, and the heater 6 are connected in parallel to the power supply side, respectively, and have relays (relay contacts) R, , R2,
R3, R4, and R5 are connected in series. Reference numeral 7 denotes a microcomputer (hereinafter referred to as LSI) for turning ON and OFF the respective relays R, , R2, R3, R4, and R5, in which programs necessary for cooling, heating, dehumidification, and ventilation are set.

This mountain 17 and its program will be explained in detail later. A transformer 8 serves as a power source for the LSI 7, to which a diode bridge 9 is connected to convert the current to direct current.

The general operation of the above configuration will be explained.

First, turn on operation switch 1, and the button will turn on. 17 operates according to the program, and controls the energization of the indoor side blower 2, the compressor 3, the outdoor side blower 4, the ventilation device 5, and the heater 6. In this control, the LSI 7 makes judgments each time according to changes in the outdoor temperature, and controls energization of each device to maintain an air-conditioned state suitable for the outdoor temperature condition. That is, the mountain SI7 operates so as to obtain the characteristics shown in FIG. 12, and automatically controls the indoor temperature so that it 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 heating relative to the outdoor temperature, and the values (indoor target temperature, etc.) can be set arbitrarily. are doing. Considering the above-mentioned general operation, since it is automatic control, it is necessary to notify the operator in which driving range the system is currently in.

Therefore, it is necessary to provide a display section somewhere, and in this case, it is preferable to provide it on an easily visible operation section. Next, the operating section will be explained based on FIG. 2. Fig. 2 shows the operation panel of the operation section, which includes an operation switch la 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. lb is provided respectively.

In this embodiment, if you move the room temperature adjustment notch lb to the left,
If you turn it to the right, it will be set to ``High'' (high operating temperature), and if you turn it to the right, it will be set to ``Low'' (low operating temperature), and if you set it to the middle 5/tch, the operation control will be automatically performed based on the characteristics shown in Figure 12. It is carried out in The system will be explained in detail later. Further, the operation panel is provided with display lamps L, L2 for displaying the current operating range, and the display lamps L, L are lit based on the respective operating ranges of heating and ventilation. Further, the operation panel is provided with a control changeover switch lc for switching between automatic control and manual control so that the automatic control by the above-mentioned 17 can also be controlled by an indoor thermostat (not shown) in terms of absolute temperature as in the past. . Next, a detailed explanation of the general operation shown in FIG. 1 will be explained based on FIGS. 3 and 4.

FIG. 3 shows the relationship between the melon 15 and its peripheral elements, including a temperature sensor unit 10 that detects indoor and outdoor temperatures as its peripheral elements, and an LSI 7 that converts the output of the temperature sensor unit 10 from analog to digital. A-○ conversion unit 11 (its A
-○ conversion characteristics are shown in Fig. 5), and a control switching element 12 (the control switching element 12 may also serve as a control switching switch if necessary), which inputs a signal from the control switching switch lc for switching between automatic and manual mode. ), the encoder unit 13 receives the signals from the room temperature adjustment notch lb, and inputs the signals to the input terminal 17, respectively.
It is provided on the input side of SI7.

Further, on the output side of the LSI 7, each relay R, .
An interface unit 14 is provided that operates R2, R3, R4, and R5 (collectively referred to as relays R). When the relay R is operated, a corresponding load L (such as the indoor blower 2 shown in FIG. 1) is operated. Also, the LSI
The timing for inputting the indoor temperature and the timing for inputting the outside air temperature are determined through a decoder section 15 on the output side of 7. That is, when the input to the decoder section 15 is at a high level, the indoor temperature is input, and when the input to the decoder section 15 is at a low level, the outdoor temperature is input. In addition, V. .
is the input power supply circuit 17, 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 1 is formed by a room temperature thermistor 10a and an outside temperature thermistor 10b, and the output of this temperature sensor section 10 converts the temperature into a resistance value, and further converts the change in the resistance value into an A-D converter. 11 (including a V-F converter 16 to be described later), the voltage is converted into a voltage by an operational amplifier, and is input to the decoder section 15. The decoder section 15 outputs output terminals C, . A V-F converter that receives the output signal of the boat and selects either the voltage corresponding to the outside temperature or the voltage corresponding to the indoor temperature input from the temperature sensor section 10, and constitutes the A-D converter section 11. Output to 16. This V-F converter 16 converts the analog input (voltage) from the decoder section 15 into a digital output (frequency) and inputs it to the SNS terminal of the LSI 7. The input of this SNS terminal is converted into temperature and frequency by an internal power counter of the mountain 17 (not shown in FIG. 4 for later explanation). Next, based on Figure 6, LS
I7 will be explained.

As mentioned above, Voo indicates the input power supply circuit to LSI7,
Vss indicates a ground terminal. In addition, the SNS terminal indicates the input terminal of the A-○ converted pulse as described above, the A boat and the B boat each indicate input, and the C boat indicates the output (outputs are provided in addition to the C boat. ROM is a memory (hereinafter simply referred to as ROM) that stores control commands, and stores various control flows (details will be described later). RAM indicates random access memory that stores data necessary for controlling the system. ALU
is the random access memory RAM (hereinafter simply referred to as RAM).
an arithmetic logic unit (hereinafter simply referred to as ALU) that processes and makes decisions on each type of data stored in the ALU (hereinafter simply referred to as ALU);
It is. Indicates a register (hereinafter simply referred to as ACC) that handles data processed during the operation of the LSI7, and also
TER indicates an internal counter that converts the input pulse from the SNS terminal into temperature and frequency as described above. This L
Since SI7 has been introduced in the technical field through literature and the like, detailed explanation thereof will be omitted.

Here, the operation of this melon 17 will be explained very briefly.

According to the ROM command, input the outdoor temperature and indoor temperature from the A boat input, B port input, and SNS terminal, and once these inputs are stored in the ROM, judge what operation mode should be set. The result is output from the C boat. Each device of the air conditioner is controlled depending on the type of signal output from this C-boat. Air conditioning control will be explained in detail later. Next, the manner in which each device of the air conditioner is controlled will be explained based on FIG. 7.

In this FIG. 7, ventilation operation control is shown as an example, and C
, , C2 indicate the C boat outputs of the LSI 7, respectively. R, , R5 are indoor blower 2 and ventilation device 6, respectively.
17 is a light emitting diode that displays the operating status. Since this light emitting diode 17 is an indication of ventilation, it corresponds to L2 in FIG. Therefore, when the ventilation command is output from Mr. 17, each output terminal C.
, C2 through the switching circuit to relays R, , R5.
is activated, and the indoor blower 2 and ventilation device 5 are respectively driven to perform ventilation operation.

The same applies to the heating operation, and the relays R, , R5 may be set to correspond to the heating operation.

Further, if the ventilation device 6 is a ventilation system, etc., the indoor blower 2 may not be energized. Next, the overall control configuration in which the individual controls described above are summarized will be explained based on FIG. 8.

In the same figure, the ROM is used for various control flows (
An example of this is a command to start heating and a command to start ventilation, and additional commands based on these commands (for example, intermittent operation of a compressor). (control commands, etc.)
are stored in a predetermined location over a large number of times. 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, ALU is RA
It functions as a comparator that compares each type of data stored in M 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 each flag (hereinafter simply PS,
CF, ZF), RAM and RO compared by ALU
The ROM determines whether the results of the M data match or do not match, and the ROM issues a different command again based on the result of this determination. An example of this is the heating operation command mentioned above. 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;
For S, CF, the above ALD comparison results are stored in ROM.
Let me know. ACC is an accumulator (hereinafter simply ACC)
) performs various data processing. COUNTER
represents a counter as described above, which converts the input pulse into temperature and inputs the data to the RAM. CLOCKGEN'
It is also a clock generator (hereinafter simply referred to as CLOCK GEN) that controls the adjustment of the operation timing of each element of the LSI. X and Y are registers (hereinafter referred to as X register and Y register), respectively, and an input location N (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. 11, the RAM is divided into addresses according to various inputs, and external inputs are determined by mutual specifications between the X register and Y register of the divided addresses. It is stored within the address. Note that other elements (STACE, SP,
MPX, PC, m, S, G, SF, E/OFF, T/C
, DEC, L, TEM circle, mSTRUCTION PL
Regarding A), although it is a microcomputer, its explanation is omitted because it does not have a particularly deep relationship with the temperature control of the present invention.

The microprocessor shown in FIG. 8 has an input side as described above, and the input side includes 4 bits of Ao to 3 ports, 4 bits of Bo to 3 ports, and each terminal SNS.
o, SNS,, CSLCT, TST, RST “OSC,
It consists of Voo and Vss, and the output side is a 12-bit C
.

〜、． Boat and 8-bit Do~? It consists of a boat and 4-bit Eo to 3 boats. Next, we will explain each terminal on the input side. As shown in Figure 9, for boat A, a signal is input to select whether temperature control is to be performed automatically or manually. Accordingly, the LSI 7 is operated automatically or manually.

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. This automatic and manual control will be explained later, so
The explanation here will be omitted. For B boats, the 10th
As shown in the figure, the signal is input to the signal key LSI 7 according to the control of the room temperature adjustment notch lb. 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 control/touch lb ranges from 1 to 9 notches, but the number of notches is not limited to this range. To explain the signals input to this B boat, the B boat is 4 bits, so 1 notch is 0001, 2 notches is 0010, 3 notches is 0011, 4 notches is 0100, 5 notches , 0101 for 6 notches, 0111 for 7 notches, 1000 for 8 notches, and 1001 for 9 notches.
Upon receiving one of these signals, the ROM instructs which operating mode to use. Also, the terminal SNS has A as mentioned above.
A signal obtained by converting the −D-converted indoor temperature and outdoor temperature into frequencies is input. For convenience of explanation, the converted signals will be referred to as indoor temperature and outdoor temperature below. Terminal RST is a reset terminal, and when the air conditioner is turned on, the ROM is reset to 1.
Reset the ROM so that it operates from the instruction at the address. The terminal OSC is the input terminal of the CLOCKGEN, Vo
o and Vss are the false 1 power supply and ground, respectively, as described above. Next, regarding the output side of the LSI 7, as shown in Figure 1, the 12-bit C boat includes various devices such as an indoor blower 2, a compressor 3, an outdoor blower 4, a ventilation system 5, and a heater 6. Relay R. controls the operation of R. ,R2,
R3, R4, and R5 are connected to each other.

Each of these devices is not limited to the C boat but other output side D
It can be connected to a boat or an E-boat. The ROM gives a command as to which output port to output from, and for the sake of convenience in this embodiment, a description of the D and B boats will be omitted. Next, temperature control by the microprocessor will be explained with reference to FIGS. 1, 3, 8, 12, 14, and 15.

Here, for convenience of explanation, it is assumed that automatic operation is performed, the room temperature adjustment notch is 5 notches, and heating to ventilation and its operation are controlled.

First, when the operation switch 1 is turned on, a reset signal and a power source for the LSI 7 are inputted from the terminals RST and VDo, respectively.

At the same time, various data designated at each address of the RAM are input from the A boat 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. In other words, when YES, the ROM command inputs the data in the RAM to a predetermined location, enters the number of notches in the room temperature from boat B, determines the upper limit and lower limit temperature ( In this embodiment, since the automatic control is set to 5 notches, which is set as standard, the heating and ventilation temperature (20° C.) is set and stored in the designated address of the RAM. Now, if the outdoor temperature is 18° C., the ROM first compares and determines whether the outdoor temperature (18qo)≧heating boundary value (20qo).

Therefore, since the outdoor temperature (18qo) is lower than the heating boundary value (20oo) at 5/tch, a signal of NO, that is, a command to perform heating operation at a predetermined location, is issued. According to this command, the equipment necessary for heating operation is operated from the C port. In this example, the heating cycle of a heat pump is adopted, so the indoor blower 2, the compressor 3,
The outdoor blowers 4 are driven, and cold soot flows as shown by solid arrows in FIG. 15, thereby heating the room. These devices include relays R, , R2, R3 as shown in Figure 1.
driven by. The signal flow of the above microprocessor is always repeated, and the ROM has a fluctuating RA.
It constantly compares and makes judgments based on data from M and issues operational control commands for each device.

In heating operation in this case, the room temperature control notch is 5 notches, so the indoor target temperature is 20°C, and the ROM is always in the RAM.
Based on indoor temperature data from
The operation of each device is controlled so that q0 is maintained. In this case, it is natural that there will be some variation in the temperature control between 2 pi and ○. Further, if the indoor temperature is extremely low and the heating capacity of 20° C. cannot be obtained by the heat pump cycle, a command to energize the heater 6 may be stored at a predetermined command address in the ROM. Furthermore, in order to improve the heating characteristics when using the heater 6, a command to energize the heater 6 at the start of heating may be stored in the ROM. It can be applied in various ways. In addition, as heating capacity control, means such as stopping the compressor 3 or biasing the refrigerator using known techniques may be adopted, but these control commands should be stored in a predetermined location in the ROM. This allows for more precise temperature control. Eventually, as time passes, the outdoor temperature rises to higher than 2p (assumed to be 21°C), and the previously continuous signal flow changes midway through.

That is, since the input data from the A boat that the ROM commands to the RAM changes periodically, the ROM's determination command changes based on the determination of the change. This is B
Although the judgment regarding the boat's room temperature/number of seats remains the same,
Since the outdoor temperature has increased, the ROM's judgment of outdoor temperature≧heating boundary value changes. In other words, the outdoor temperature is 21°C, which is higher than the heating threshold temperature, so the decision is YES.
The next command stored in the predetermined location in the ROM, that is, the command to perform ventilation operation stored in the predetermined location, is issued. Of course, there are many signal flows (
For example, it goes without saying that there is a signal flow until it is determined that an order to ventilate is sent to the stored address. Further, data input to the RAM and commands to the ROM are continuously and repeatedly performed, as in the case of the above-mentioned heating operation. Next, ventilation operation will be explained.

The command to perform the ventilation operation of the ROM is outputted from the C boat in the same manner as the heating operation, and the operation of the equipment necessary for the ventilation operation is controlled by this command.

In other words, an output is output from each bit of the C boat to cut off the power to the relays R, , R2, and R3 that drive the compressor 3 and the outdoor blower 4, and to energize the relay R4 that drives the ventilation system 5. Since this ventilation is a damper type, the indoor blower 2 is continuously operated.The above heating operation and ventilation operation are explained when the outdoor temperature is 1800°C and 21°C, respectively.
Although the description has been made for the case where the outdoor temperature is fixed, in reality the outdoor temperature is constantly changing, and the indoor target temperature changes in accordance with the fluctuations in the outdoor temperature.

Therefore, in each of the above-mentioned operations, it is necessary to change the indoor target temperature in accordance with the fluctuations in the outdoor temperature. Next, based on FIG. 12, setting of the indoor target temperature of the ROM will be explained.

In the same figure, it can be seen that in the heating operation region, it is sufficient to keep the indoor temperature constant regardless of the outdoor temperature, so there is no need to change the indoor target temperature following fluctuations in the outdoor temperature.

Therefore, in the heating operation range, the indoor target temperature may be stored at a predetermined location in the ROM, such as 20cc constant when the temperature is 5 notches. Further, since the indoor target temperature during ventilation operation only needs to be equal to the outdoor temperature in the range of 20 qo to 23°C, there is no need to store the indoor target temperature in the ROM.

In the explanation above, we explained automatic control during each operation of heating and ventilation, but this operation control is based on the characteristics shown in Figure 12 that a standard person feels are best (in this example, 5-notch characteristics), and it is natural that 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 the 1st notch and 9th notch, which are the two ends, will be described below (the middle 5 notches will be omitted because they have been explained as above). First of all, 9notch sets the indoor target temperature during heating to the lowest, 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. , compared to when the indoor target temperature in the heating operation range is 5 notches, it is 200 to 3 times lower than the indoor target temperature at that outdoor temperature.
The temperature is set to be lower.

That is, as shown in the characteristic diagram of 9 notches in Figure 12, the heating operation boundary value temperature and ventilation operation boundary value temperature were set to 20oo in the case of 5 notches, but were set to 17o0 in the case of 9 notches. ing. Therefore, the outdoor temperature is 17
If the temperature is below ℃, it will be in the heating operation range, and if the outdoor temperature is 1
The range from 70 to 2000 is the ventilation operation area. If the above characteristics are stored in a specified location in the ROM as in the case of 5 notches, even if the room temperature is adjusted to 9/2, the R
The OM commands the RAM to input data, and the ROM sequentially controls the operation of each device based on the input data to the RAM. In this case as well, as shown in Figure 14, R
OM continues to repeat commands in sequence. Next, one notch with the highest indoor target temperature will be explained.

The indoor target temperature for this one notch can be set arbitrarily, but in this embodiment, the indoor target temperature in the heating operation range is set to 2700 so that there is a difference of about 2°C from the outside air. There is.

Here, a ventilation operation area is provided for this 1/tch, and there is no ventilation operation area. That is, the heating operation is started when the outdoor temperature becomes 24° C. or lower, and the operation of each device is stopped when the outdoor temperature becomes 24:00 or higher. This is because this setting provides sufficient comfort for those who desire one notch without having to specially operate each device. Of course, this set temperature can also be lowered and can be set arbitrarily. If the above characteristics are stored in a predetermined location in the ROM as in the case of 5/Tsuchi, even if the room temperature is adjusted by one notch, the ROM will command to input data to the RAM as described above, and the input data in the RAM will be Based on this, the ROM sequentially controls the operation of each device. In this case as well, the first
4. The ROM sequentially repeats the commands in the order shown in FIG.
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 intermediate notch may be set as appropriate.

Next, manual control will be explained.

This manual control focuses 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 manual control, but the 5-notch setting is generally widely known. The temperature was set at 20°C. The same applies to other notches, and they are not particularly limited to this value. Further, in this manual control, a ventilation operation area is not provided, but it may be provided as necessary. Therefore, by storing the characteristics shown in FIG. 13 in a predetermined location of the ROM,
When the RAM inputs manual control data, the ROM immediately issues a command to set the indoor target temperature as shown in FIG. 13, and controls the operation of each device to achieve that absolute temperature 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 each notch. here,
In the heating operation range, the indoor target temperature is set to the same value as in the case of automatic control, but this indoor target temperature is not limited and can be determined arbitrarily, and is the same as in the case of automatic control. If it is set to a value, it can also be used for automatic control, reducing the number of microprocessor programming steps. This heating operation is exactly the same as in the case of automatic control, and is stopped when the outdoor temperature reaches the heating boundary value, as in the case of automatic control. Then, when the indoor temperature drops, heating operation is restarted. Furthermore, although the manual control described above has been explained using 5 notches as an example, the control is similar for other notches, and only the command address of the indoor target temperature output from the ROM is different.

Further, the indoor target temperature may be set arbitrarily. Further, the selection of /titch may be made arbitrarily during use. Therefore, in the control according to this embodiment, if the setting is set to 5 notches, a person with a standard sense can always automatically obtain a comfortable air conditioning effect, and the operation is only required at the beginning of operation, making it extremely easy to use. gets better.

In addition, even if you are not a standard user, if you select the desired temperature control and select the notch, you can automatically obtain a comfortable air conditioning effect at all times as described above, eliminating the need for switching operations and inconvenience. There is no need to worry. Furthermore, even those who do not like such automatic control can still obtain absolute temperature control as in the past. Therefore, air conditioning 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 overheating, and extremely efficient air conditioning is achieved without wasting energy. Furthermore, since the operation panel is provided with display lamps L, L2 that display the current operating status, there is no illusion for the user. In addition, in terms of ease of use, heating and ventilation are automatically switched, eliminating the hassle of switching between them. As is clear from the above embodiments, the temperature control method and device for an air conditioner of the present invention detects at least the outdoor temperature and selectively performs the heating operation and the ventilation operation, and during the heating operation, the indoor temperature is Heating operation is performed until a preset temperature is reached, and heating operation and ventilation operation are selectively operated based on the outdoor conditions (temperature), so there is no unnecessary heating operation and energy consumption is reduced. Wasteful consumption can be prevented, and continuous ventilation allows fresh outside air to be introduced into the room, providing comfortable air conditioning.

In addition, by switching the room temperature control notch, the starting operating point of ventilation operation changes, so you have a wider range of comfort options, and even when switching to ventilation operation, the temperature difference with the outside air introduced is small, so there is no heat shock. It has various advantages, such as being small, providing excellent ventilation operation, and saving energy as the heating effect is not lost due to ventilation.

[Brief explanation of the drawing]

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. ``Figure 4 is a schematic electrical circuit diagram that slightly embodies Figure 3, and Figure 5 is a block diagram showing the V/V in the control device.
A V-F conversion characteristic diagram of the F converter, FIG. 6 is a schematic explanatory diagram of the microprocessor in the control device, and FIG. 7 is a schematic electrical circuit diagram showing the operational relationship between the control device and some devices.
Fig. 8 is an explanatory diagram of the signal flow inside the microprocessor, Fig. 9 is an explanatory diagram of switching between automatic control and manual control in the microprocessor, and Fig. 10 is an illustration of the microprocessor and room temperature control notch in the control device. Figure 11 is an explanatory diagram of the RAM word in the same microprocessor, Figure 12 is a characteristic diagram of temperature control by automatic control of the same control device, and Figure 13 is a temperature diagram of manual control of the same control device. Fig. 14 is a flowchart of control instructions of the microprocessor in the control device, Fig. 15 is a schematic configuration diagram of an air conditioner whose temperature is controlled by the control device, and Fig. 16 is an air conditioner according to the present invention. It is a block diagram of a control device of a harmonizer. lb...room temperature adjustment notch, 5...ventilator, 7...microprocessor (control device), 10...
...Temperature sensor section (temperature detection means), ROM...
Storage means, ALU...Discrimination means, T.・・・・・・・
Outdoor temperature "T2... Indoor target temperature, b...
Indoor heat exchanger (heating device). Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16

Claims (1)

[Scope of Claims] 1. Outdoor temperature detection means for detecting the outdoor temperature, indoor temperature detection means for detecting the indoor temperature, and a room temperature adjustment notch for varying the switching operating point between the heating area and the ventilation area and the indoor set temperature; a comparison means for comparing the outdoor temperature and the indoor temperature detected by the outdoor temperature detection means and the indoor temperature detection means, and when the outdoor temperature is within the heating range determined by the room temperature adjustment notch according to the comparison means, the heating device A temperature control method for an air conditioner, which operates a ventilation device when the outdoor temperature is within a ventilation region determined by the room temperature adjustment notch. 2. An outdoor temperature detection means for detecting the outdoor temperature, an indoor temperature detection means for detecting the indoor temperature, a room temperature adjustment notch for varying the switching operating point between the heating area and the ventilation area and the indoor set temperature, the outdoor temperature detection means and A temperature control device for an air conditioner, comprising a comparison means for comparing an outdoor temperature and an indoor temperature detected by an indoor temperature detection means, and a heating operation control means and a ventilation operation control means that operate and stop according to a signal from the comparison means. .