JP2011069518A - Control device of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device of an air conditioner capable of preventing excessive cooling and heating of indoor air by correcting set air volume by detecting the temperature of a place where a user stays, and improving comfort and energy-saving performance. <P>SOLUTION: The control device of the air conditioner includes an operation control means, an indoor blower, a wireless remote controller provided with a remote control temperature sensor detecting an indoor spatial temperature of a remote controller placement position, and an indoor temperature sensor, and the air volume is corrected by controlling rotation of the indoor blower on the basis of difference between the indoor temperature detected by the indoor temperature sensor and the indoor temperature detected by the remote controller. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioner control device, and more particularly to an air conditioner control device capable of correcting the amount of air blown from an indoor unit in accordance with the indoor temperature at the position of a wireless remote controller.

  Conventionally, in an air conditioner, there is a case where a user's position is too cold or too warm with respect to a set temperature due to comfort priority. Also, an air conditioner is provided with a temperature sensor in the wireless remote control, selects the remote control temperature sensor value during heating operation, and controls the compressor operation using a suction temperature sensor provided in the indoor unit of the air conditioner during cooling operation Has been proposed (see, for example, Patent Document 1).

  However, the control device for the air conditioner described in Patent Document 1 switches the place where the room temperature is detected according to the operation mode, and can optimize the room temperature of the part where the user is present. On the other hand, the air volume blown from the indoor unit is determined by the difference between the room temperature and the set temperature by one of the temperature sensor installed in the indoor unit or the remote control temperature sensor. Depending on the position or the environmental conditions of use, it may be too cold or too warm, or it may not be cooled or warmed, and there is a problem in improving comfort and energy saving.

JP 11-337151 A

  The present invention has been made in consideration of the above-described circumstances, and includes an indoor temperature detected by an indoor unit of an air conditioner and an indoor temperature detected by a temperature sensor of a wireless remote controller placed in a place where the user is present. An object of the present invention is to provide a control device for an air conditioner that corrects the amount of air blown from an indoor unit based on the difference, prevents indoor air from being overcooled and overheated, and improves comfort and energy saving. .

  In order to achieve the above-described object, the present invention includes an indoor unit of an air conditioner, an operation control unit provided in the indoor unit, an indoor fan that is controlled by the operation control unit and is provided in the indoor unit. A remote controller temperature sensor for detecting the indoor space temperature at the position where the wireless remote controller is disposed, a wireless remote controller for operating the air conditioner, and an indoor temperature sensor provided in the indoor unit, from the wireless remote controller In an air conditioner control device that controls operation of an air conditioner based on a difference between a room temperature detected by the room temperature sensor and a set temperature in an operation command, the operation control means is detected by the room temperature sensor. Based on the difference between the room temperature and the room temperature detected by the remote control temperature sensor, the rotation of the indoor fan is controlled to correct the air volume. And features.

  According to the control apparatus for an air conditioner according to the present invention, the temperature of the place where the user is present is detected, the set air volume is corrected, the indoor air is prevented from being overcooled and overheated, and comfort and energy saving are achieved. An improved air conditioner control device can be provided.

The perspective view of the indoor unit using one Embodiment of the control apparatus of the air conditioner which concerns on this invention. The conceptual diagram which shows the use condition of the indoor unit using one Embodiment of the control apparatus of the air conditioner which concerns on this invention. The top view of the wireless remote control used for one Embodiment of the control apparatus of the air conditioner which concerns on this invention. The top view which shows the remote control temperature sensor part of the wireless remote control used for one Embodiment of the control apparatus of the air conditioner which concerns on this invention. The block circuit diagram used for one Embodiment of the control apparatus of the air conditioner which concerns on this invention. Explanatory drawing (cooling) of the air volume correction method of the control apparatus of one Embodiment of the control apparatus of the air conditioner which concerns on this invention. Explanatory drawing (heating) of the air volume correction method of the control apparatus of one Embodiment of the control apparatus of the air conditioner which concerns on this invention.

  An embodiment of a control device for an air conditioner according to the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, an air conditioner 1 according to the present embodiment is installed in an indoor upper part, and is provided with an indoor unit 2 provided with an indoor air inlet 2 a and an outlet 2 b and an outdoor unit installed outside the room. (Not shown).

  The blower outlet 2b is provided with an upper louver 271 (FIG. 5) for adjusting the vertical wind direction and an upper louver 272 for adjusting the vertical wind direction and a lower louver 273 for adjusting the horizontal wind direction.

  The left and right louvers 273 include a left louver 273a provided on the left side of the outlet 2b and a right louver 273b provided on the right side, and both the louvers 273a and 273b are independently controlled to face in the left and right direction.

  In the indoor unit 2, an electrical component box in which an indoor heat exchanger (not shown), an indoor fan 241 (FIG. 5), and a circuit board B (FIG. 5) are accommodated is disposed.

  In addition, the air conditioner 1 includes a wireless remote controller (hereinafter simply referred to as a remote controller) 11 disposed at hand of a user in the room. By operating the remote controller 11, a driving operation signal is sent to the indoor unit 2. Operation is controlled based on this content.

  As shown in FIGS. 3 and 4, the remote controller 11 includes a remote controller temperature sensor 12 for detecting the temperature of the indoor space where the remote controller is installed at the top of the main body, and an operation unit 13 for setting an operation mode and a set temperature. A remote control unit 14 to which a room temperature value information signal from the remote controller temperature sensor 12 and a setting information signal from the operation unit 13 are input is provided.

  Further, on the upper part of the main body, a data transmission / reception unit 15 for transmitting signals of the remote controller control unit 14 and setting information signals to the indoor unit 2 (FIG. 1) and receiving information signals transmitted from the indoor unit 2, an upper part On the front side, a display unit 16 for operating information, driving information, etc. of the remote controller 11 is provided.

  As shown in FIG. 5, the indoor unit control device of the indoor unit 2 is provided with a main board B1 housed in an electrical component box, a display board B2 attached to the front surface of the indoor unit 2, and a light receiving board B3.

  Various circuits including an MCU (microcontroller unit) 21 are attached to the main board B1, and the MCU 21 is connected to a power source via a power circuit 22 including a rectifier.

  The MCU 21 includes a CPU, a memory, and the like and functions as an operation control unit in the present invention. The control of the air conditioner 1 executes a control program stored in the ROM while the CPU exchanges data with the ROM and the RAM. Is realized.

  Further, the MCU 21 is connected to the serial circuit 23 and transmits signals to the compressor 42 mounted on the outdoor unit and the outdoor unit control circuit 41 that controls the operation of the outdoor blower (not shown).

  An outdoor unit control circuit 41 including an inverter circuit PWM-controls the DC voltage of the rectifier circuit, converts DC to AC, and drives the compressor motor built in the compressor 42 at a variable speed.

  Further, the MCU 21 is connected to a drive circuit 24 that drives and controls the indoor fan 241, and is connected to a drive circuit 25 that drives and controls the two-way valve 251, and a drive circuit 26 that drives and controls the fan motor of the ventilation mechanism 261. Connected.

  Further, the MCU 21 is disposed on the upper louver 271 for changing the upper and lower airflow direction, the louver 272 for changing the upper and lower airflow direction, the left louver 273a whose right direction can be changed separately by two motors, the right louver 273b, and the suction port front surface. A drive circuit 27 of a drive motor that drives and controls an open / close panel moving mechanism 274 that is moved in the front-rear direction is connected. Further, in the ventilation mechanism switching damper 281 of the ventilation mechanism and the filter automatic cleaning means built in the indoor unit 2, when the dust accumulated in the dust box of the filter cleaning means is exhausted to the outside using the ventilation device, the dust box A seal mechanism 282 for moving the filter contact opening surface where the brush inside is exposed to seal, a moving mechanism 283 for reciprocating the upper filter to the filter cleaning means, a moving mechanism 284 for reciprocating the front filter to the filter cleaning means, filter cleaning A drive circuit 28 that drives and controls a filter brush drive device 285 that contacts and rotates on the surface of the filter built in the means and scrapes dust on the filter surface is connected.

  Note that the up / down air direction changing louvers 271 to the filter brush 285 are controlled by the drive circuits 27 and 28 via motors and the like provided in each of them, but for easy understanding, the up / down air direction changing louvers 271 are directly used. ~ Illustrated and described as controlling the filter brush 285 directly.

  The display board B2 is provided on the front surface of the indoor unit 2, and a display unit 291 that displays an operation state and an operation mode is attached thereto, and is connected to the MCU 21 via a drive circuit 29 that drives the display unit 291.

  Further, the light receiving substrate B3 is provided with a remote controller 11, a transmitter for receiving and transmitting signal data, and a circuit unit 301 equipped with the receiver. The light receiving substrate B3 is connected to the MCU 21 via a drive circuit 30 for controlling the data receiving and transmitting unit 301. Connected.

  The MCU 21 includes an indoor temperature sensor 31 provided around the suction port 2a, a sensor 32 for detecting the degree of dirt in the room, a micro switch 33 for detecting the open / closed state of the front panel, and a filter. The microswitch 34 for detecting the mounting state of is connected.

  The air conditioner of the present invention having the indoor unit control device as described above can select at least a cooling operation mode, a heating operation mode, and an automatic operation mode with the remote controller 11.

  In the operation in each mode, the operation control of the air conditioner is performed based on the difference between the indoor temperature detected by the indoor temperature sensor installed in the indoor unit and the set temperature.

  The cooling operation mode and the heating operation mode are those in which the user requests cooling or heating, sets the desired temperature, and operates, sets the desired room temperature with the remote controller, and operates the operation switch. In this operation, the set temperature is adjusted up and down according to the user's sense of the heat and the temperature is adjusted to the desired temperature, giving priority to the user's comfort. Mode.

  On the other hand, in the automatic operation mode, the cooling or heating operation mode is automatically selected based on information on the set temperature, the room temperature, and the outdoor temperature. Furthermore, in order to obtain energy savings while maintaining comfort, a remote control temperature sensor is used, and a set temperature correction is applied to prevent overcooling and overheating, thereby ensuring energy savings as a result.

  The wide airflow operation mode is an operation mode in which the left louver 273a is operated to the left and the right louver 273b is maximally directed to the right, and the blown air volume is divided into right and left.

  Next, the automatic operation of the air conditioner using the air conditioner control device of the present embodiment will be described.

  In the automatic operation mode, operation control of the air conditioner is performed based on a preset temperature stored in the MCU 21 in advance.

  As shown in FIG. 5, when the air conditioner is set to the automatic operation mode and the operation switch is operated by the remote controller 11, a signal of the automatic operation mode is transmitted from the remote controller 11 to the indoor unit 2. Further, the set temperature Ts is displayed on the display unit 16 of the remote controller 11.

  The indoor temperature sensor 31 installed in the indoor unit 2 detects the temperature of the air sucked into the indoor unit 2, and based on the difference from the set temperature, the air conditioner is set to the automatic cooling operation or the automatic heating operation. Decide what to do.

  On the other hand, the MCU 21 that has received the set temperature Ts stores the temperature corrected (corrected) in consideration of various conditions such as the outside air temperature in the memory as the corrected set temperature Ts1.

  If the corrected set temperature Ts1 has already been stored in the previous use, there is no need to newly set it.

  When the room temperature is higher than the set temperature, the automatic cooling operation is automatically selected and the room air is cooled as shown in FIG.

  The indoor temperature sensor 31 installed in the indoor unit 2 detects the temperature of the air sucked into the indoor unit 2 and stores it in the memory. The remote controller 11 detects the indoor temperature Ta in the vicinity of the remote controller 11 by the remote controller temperature sensor.

  The room temperature (remote controller room temperature) Tar detected by the remote controller temperature sensor is transmitted to the MCU 21 via the data transmitter / receiver 15 of the remote controller 11 and the data transmission / reception unit 301 provided on the light receiving substrate B3 and the drive circuit 30. The remote controller room temperature Tar is transmitted at intervals of 10 minutes, for example.

  In general, when the cooling operation is continued, the indoor temperature Ta detected by the indoor temperature sensor 31 located in the upper part of the room and the indoor temperature Tar at the wireless remote control position detected by the remote control temperature sensor 12 placed on the floor surface of the room. There is a temperature difference between them.

  Normally, the remote controller indoor temperature Tar is lower than the indoor temperature Ta detected by the indoor temperature sensor 31 installed in the indoor unit 2, so that the user who is set by automatic operation can feel comfortable and obtain energy saving. Actually, although it is set to the corrected temperature Ts1, the remote controller room temperature Tar is touched and it feels cold.

  Therefore, the MCU 21 compares the transmitted remote controller indoor temperature Tar with the indoor temperature Ta detected by the indoor temperature sensor 31, and lowers the remote controller indoor temperature Tar if the remote controller indoor temperature Tar is higher than the indoor temperature Ta. To increase the air volume for this purpose. That is, the air volume is corrected.

  For example, the MCU 21 that has received the remote controller indoor temperature Tar compares the remote controller indoor temperature Tar with the indoor temperature Ta, and calculates a temperature difference ΔT (ΔT = Ta−Tar).

  FIG. 6 shows the relationship between the temperature difference ΔT during cooling operation and the necessity of air volume correction.

  The MCU 21 determines whether or not the remote controller indoor temperature Tar is higher than the indoor temperature Ta by a predetermined temperature shown in FIG. 6, for example, 2 ° C. or more (temperature difference ΔT ≧ −2 ° C.).

  When the remote controller indoor temperature Tar is 2 ° C. or more higher than the indoor temperature Ta (ΔT ≧ −2 ° C.), the air volume correction is performed.

  A predetermined number of rotations is added to the current increase in the air volume, that is, the number of rotations of the indoor fan 241 with respect to the set temperature via the drive circuit 24, and the number of rotations is increased and stored in the memory. For example, it is corrected to +30 rpm.

  The MCU 21 continues the cooling operation by rotating the indoor fan 241 at the corrected rotation speed (+30 rpm) without controlling the compressor 42.

  In this cooling operation, by increasing the amount of cool air to the entire room, it is possible to improve comfort and reduce the power consumption up to the set temperature without controlling the compressor 42.

  On the other hand, when the remote controller indoor temperature Tar is not higher than the room temperature Ta by 2 ° C. or more (ΔT> −2 ° C.), the airflow correction is not performed and the cooling operation with the current airflow is continued.

  If the difference between the remote controller indoor temperature Tar and the indoor temperature Ta is within −2 ° C., the user can obtain comfort and does not need to increase the amount of cold air.

  When the room temperature is lower than the set temperature, the automatic heating operation is selected and the room air is heated.

  Since the outside air temperature is low and the heating operation is required at different times depending on the indoor conditions in which the air conditioner 1 is installed, only the indoor temperature sensor 31 installed in the indoor unit 2 is suitable. In some cases, it is impossible to perform proper control.

  In such a case, if the heating operation is continued, the remote controller indoor temperature Tar is usually lower than the indoor temperature Ta even if the remote controller indoor temperature Tar reaches the set temperature, so that the user feels cold.

  The MCU 21 compares the transmitted remote controller room temperature Tar with the room temperature Ta, and if the remote controller room temperature Tar is lower than the room temperature Ta by a predetermined temperature, the MCU 21 increases the air volume in order to increase the remote controller room temperature Tar. That is, the air volume is corrected.

  For example, the MCU 21 calls the rotation number of the indoor fan 241 during the heating operation corresponding to the set temperature Ts stored in advance in the memory, for example, +30 rpm, and rotates the indoor fan 241.

  The MCU 21 operates the compressor 42 via the serial circuit 23 and the outdoor unit control circuit 42 to heat the room.

  The indoor temperature sensor 31 installed in the indoor unit 2 detects the temperature of the air sucked into the indoor unit 2 and stores it in the memory, and the remote controller 11 detects the remote controller indoor temperature Tar by the remote controller temperature sensor 12.

  The remote controller indoor temperature Tar detected by the remote controller temperature sensor 12 is transmitted to the MCU 21 via the data transmitter / receiver 15 of the remote controller 11 and the data receiving / transmitting unit 301 provided on the light receiving substrate B3 and the drive circuit 30. For example, the transmission of the remote controller indoor temperature Tar is performed at intervals of 10 minutes as in the cooling operation.

  On the other hand, the MCU 21 that has received the remote controller indoor temperature Tar compares the remote controller indoor temperature Tar with the indoor temperature Ta, and calculates a temperature difference ΔT (ΔT = Ta−Tar).

  FIG. 7 shows the relationship between the temperature difference ΔT during heating operation and the necessity of air flow correction.

  The MCU 21 determines whether or not the remote controller indoor temperature Tar is lower than the indoor temperature Ta by a predetermined temperature shown in FIG. 7, for example, 2 ° C. or more (ΔT ≧ 2 ° C.).

  When the remote controller indoor temperature Tar is 2 ° C. or more lower than the indoor temperature Ta (ΔT ≧ 2), the air volume correction is performed.

  A predetermined rotation speed is added to the current increase in the air volume, that is, the rotation speed of the indoor fan 241 with respect to the set temperature via the drive circuit 24, and the rotation speed is increased and stored in the memory. For example, it is corrected to +30 rpm.

  The MCU 21 continues the heating operation by rotating the indoor fan 241 at the corrected rotation speed (+30 rpm) without controlling the compressor 42.

  In this heating operation, by increasing the amount of warm air and blowing more warm air to the floor, the comfort is improved and the power consumption until reaching the set temperature is reduced without controlling the compressor 42. be able to.

  When the remote controller indoor temperature Tar is not lower than the room temperature Ta by 2 ° C. or more (ΔT ≦ −2ΔT ≧ 2), if it is not wind, the air volume correction is not performed, and the cooling operation with the current air volume is performed.

  If the difference between the room temperature Ta and the remote controller room temperature Tar is within −2 ° C., the user can obtain comfort and does not need to increase the amount of hot air.

  In the automatic operation of the air conditioner 1 as described above, when the wide airflow mode operation is performed, the left louver 273a is operated in the left direction and the right louver 273b is operated in the maximum direction in the right direction. May be divided into left and right. In the wide airflow mode operation, the airflow toward the remote control tends to decrease, so that airflow correction is particularly effective.

  In the automatic operation of the air conditioner as described above, the temperature of the space can be input to the air conditioner (MCU) by placing the wireless remote controller at the place where the user is present. When the temperature is higher than the remote controller room temperature by a predetermined temperature or more, the air volume is increased to increase the cool air to the entire room, improving the comfort and reducing the power consumption up to the set temperature. Further, in the heating operation, when the remote control room temperature is lower than the room temperature by a predetermined temperature or more, the air volume is increased and more warm air is delivered to the floor surface, thereby improving comfort and energy saving.

  Further, the difference between the remote controller room temperature and the room temperature is 2 ° C., and the optimum set temperature correction can be performed even in a transient state at the start of operation or setting change.

  Further, the remote controller room temperature is transmitted at intervals of, for example, 10 minutes, so that the battery life can be extended.

  The control device of the air conditioner is not limited to the case of operating in the automatic operation mode described above, but can be applied to the case of performing either the cooling operation mode or the heating operation mode. It is best to apply it to the automatic operation mode that enables this.

  According to the air conditioner of the present embodiment, during cooling or heating in the automatic operation mode, the temperature of the place where the user is always present is detected, the set air volume is corrected, and indoor air is prevented from being overcooled or overheated. Thus, an air conditioner control device that improves comfort and energy saving is realized.

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Indoor unit, 2a ... Suction port, 241 ... Indoor fan, 273a ... Left louver, 273b ... Right louver, 11 ... Wireless remote control, 12 ... Remote control temperature sensor, 13 ... Operation part, 14 ... Remote control Control part, 15 ... Data transmission / reception part, 16 ... Display part, 21 ... Operation control means (MCU), 31 ... Indoor temperature sensor, 301 ... Data transmission / reception part, 41 ... Outdoor unit control circuit, 42 ... Compressor.

Claims (3)

An air conditioner indoor unit,
Operation control means provided in the indoor unit;
An indoor blower controlled by the operation control means and provided in the indoor unit;
A remote control temperature sensor for detecting the indoor space temperature at the wireless remote control placement position is provided, and a wireless remote control for operating the air conditioner,
An indoor temperature sensor provided in the indoor unit,
In the air conditioner control device for controlling the operation of the air conditioner based on the difference between the indoor temperature detected by the indoor temperature sensor and the set temperature by the operation command from the wireless remote controller,
The air conditioning is characterized in that the operation control means corrects the air volume by controlling the rotation of the indoor fan based on the difference between the indoor temperature detected by the indoor temperature sensor and the indoor temperature detected by the remote controller temperature sensor. Machine control device. 2. The air conditioner control device according to claim 1, wherein the operation control means corrects the air volume only during the automatic operation of the air conditioner. 3. The air conditioner control according to claim 2, wherein the air volume is corrected only when the left / right opening degree of the left / right wind direction adjusting louver provided at the outlet is maximized by the operation control means. apparatus.

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