JP2010096450A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner of high reliability capable of properly estimating power consumption by an indoor fan. <P>SOLUTION: On/off duty of switching of an invertor 52 outputting driving power to an indoor fan motor 12 is detected, and power consumption Ef of the indoor fan motor 12 is estimated on the basis of the on/off duty. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner that estimates power consumption of an indoor fan.

  In general, an indoor unit of an air conditioner has an indoor heat exchanger and an indoor fan. By operating the indoor fan, the indoor air is sucked and passed through the indoor heat exchanger, and the air passing through the indoor heat exchanger is used for air conditioning. Blows out indoors as air.

As a means for detecting the power consumption of the indoor fan in such an indoor unit, there is a method of estimating the power consumption from the rotation speed of the indoor fan motor (for example, Patent Document 1).
JP 2001-41545 A

  As described above, when the power consumption is estimated only from the rotation speed of the indoor fan motor, the rotation speed of the indoor fan motor increases or decreases according to the load such as air resistance, and thus it is difficult to estimate appropriately.

  That is, if the room temperature is low, the indoor air becomes heavier than when it is warm, and the load of the indoor fan motor becomes heavy even at the same rotation speed. In this case, the amount of power consumed by the indoor fan motor increases. The amount of power consumed by the indoor fan motor also changes depending on the change in air resistance at the air outlet of the indoor fan. For example, if the outlet is narrowed, the resistance at the outlet increases and the air volume decreases. In this case, the work amount of the indoor fan motor is reduced, and the power consumption is reduced.

  Thus, the power consumption estimation of the indoor fan motor changes according to various changes in the surroundings of the indoor fan, making it difficult to estimate appropriately.

  This invention considers the said situation, The objective is to provide the air conditioner excellent in the reliability which can estimate the power consumption of an indoor fan appropriately.

  The air conditioner of the invention according to claim 1 converts the voltage of a commercial AC power source into a direct current, converts it into an alternating current by switching, and outputs it as drive power to the indoor fan motor of the indoor unit, Estimating means for estimating the power consumption of the indoor fan motor from the on / off duty of switching.

  An air conditioner according to a second aspect of the present invention is an inverter that converts the voltage of a commercial AC power source into DC, converts it into AC by switching, and outputs the drive power to the indoor fan motor of the indoor unit, The estimation means for estimating the power consumption of the indoor fan motor from the output or the state of the indoor fan motor and the power consumption estimated by the estimation means are corrected according to the operation of the wind direction changing device provided at the outlet of the indoor unit. Correction means.

  According to the air conditioner of the first and second aspects of the invention, the estimation accuracy of the power consumption of the indoor fan can be improved, and the reliability is improved.

[1] A first embodiment of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes an indoor unit having a movable panel 2 at a position corresponding to a suction port (not shown) of the front surface portion 1a, a suction port 3 at the upper surface portion, and a blower outlet 4 at the lower front surface. An indoor heat exchanger (not shown) and an indoor fan (not shown) are accommodated in the air inlet and the ventilation path from the inlet 3 to the outlet 4. The blower outlet 4 is provided with a vertical louver 5a for adjusting the blown wind upward and downward, and a horizontal louver 5b for adjusting the blown wind in the horizontal direction.

  The movable panel 2 can be moved forward as shown in the figure, and the inner suction port is opened by the projecting movement, and the inner suction port is closed by returning to the state in contact with the front surface portion 1a. In addition, the movable panel 2 has a transmissive display portion 2a at a portion corresponding to a display unit 20 described later. The transmissive display unit 2 a constitutes display means together with the display unit 20, is formed of a light transmitting member, and transmits the display of the display unit 20.

  An electrical component box (not shown) is arranged at a predetermined location in the indoor unit 1, and the indoor circuit board 50, the light transmission / reception circuit board 70 and the display circuit board 80 shown in FIG. 2 are accommodated in the electrical component box. .

  The indoor circuit board 50 is connected to the commercial AC power supply AC, takes in the AC voltage of the commercial AC power supply AC into the power circuit 51 and the inverter 52 for driving the indoor fan, and supplies the AC voltage of the commercial AC power supply AC to the power relay 53. Is supplied to the outdoor substrate 200 of the outdoor unit. A voltage sensor 54 that detects the AC voltage Vac is connected to the energization line between the commercial AC power supply AC and the power supply circuit 51.

  The power supply circuit 51 steps down and rectifies the AC voltage taken in, and outputs the DC voltage for operation of the indoor circuit board 50, the light transmitting / receiving circuit board 70, and the display circuit board 80. The inverter 52 converts the AC voltage of the commercial AC power supply AC into a DC voltage, converts it into an AC voltage of variable frequency by switching, and supplies the AC voltage to the indoor fan motor 12 composed of a DC brushless motor for driving the indoor fan. Output as drive power.

  An indoor control unit (MCU) 60, drive circuits 61, 63, 64, 65, a high voltage generation circuit 62, and a serial circuit 66 are mounted on the indoor circuit board 50. The indoor control unit 60 controls the entire air conditioner together with the outdoor control unit 201 on the outdoor circuit board 200 by transmitting and receiving data to and from the outdoor circuit board 200 via the serial signal transmission / reception circuit 66. In addition to the outdoor control unit 201, an outdoor unit (not shown) includes an outdoor heat exchanger, an outdoor fan, a compressor, and an inverter device that drives the compressor, which are general configurations. The outdoor control unit 201 detects or estimates power consumption in the outdoor unit, and transmits the power consumption data detected or estimated via the serial signal transmission / reception circuit 66 to the indoor control unit (MCU) 60.

  The drive circuit 61 drives the up-down direction louver 5a and the left-right direction louver 5b that function as a wind direction changing device, and the movable panel 2 that opens and closes the front suction port. The high voltage generation circuit 62 supplies a high voltage to the air cleaner 10 including an electric dust collector in the indoor unit 1, and the drive circuit 90 drives the ventilation fan motor 11. The drive circuit 63 drives the light transmission / reception unit 71 on the light transmission / reception circuit board 70. The drive circuit 64 drives the display unit 20 on the display substrate 80. The drive circuit 65 sets the on / off duty Du in response to a rotation speed setting command (also referred to as a speed setting command) from the indoor control unit 60 and turns on the PWM signal for the inverter 52 based on the set on / off duty Du. , Generates and outputs an off-switching signal.

  The indoor control unit 60 includes a sensor group 67 including an indoor temperature sensor that detects the indoor temperature TA, a heat exchanger temperature sensor that detects the temperature TC of the indoor heat exchanger, an indoor humidity sensor that detects indoor humidity, and the like. It is connected.

  The light transmission / reception unit 71 receives infrared light for operation emitted from a remote controller (also referred to as a remote controller) 100 and emits infrared light for data transmission to the remote controller 100.

The main part of the indoor control unit 60 is shown in FIG.
A memory 101, an outdoor unit power detection unit 102, and a fan motor power estimation unit 103 are connected to the total power calculation unit 100, and the output of the drive circuit 65 is supplied to the fan motor power estimation unit 103.

The fan motor power estimation unit 103 is supplied with the on / off switching signal on / off duty Du supplied from the drive circuit 65 to the inverter 52. The on / off duty Du is directly related to the power consumption Ef of the indoor fan motor 12.
The fan motor power estimation unit 103 estimates the power consumption Ef of the indoor fan motor 12 by a linear interpolation formula based on the input on / off duty Du and the relationship between the on / off duty and the power estimation value of FIG. . The linear interpolation formula based on the relationship between the on / off duty and the power estimation value in FIG. 4 is stored in the memory 101 in advance.

  The outdoor unit power detection unit 102 reads the power consumption Eo of the outdoor unit based on the data supplied from the outdoor control unit 200.

  The total power calculation unit 100 includes a power consumption Ef estimated by the fan motor power estimation unit 103, a power consumption Eo detected or estimated by the outdoor unit power detection unit 102, a power consumption Ep of the air cleaner 10, and a ventilation fan motor. 11 is calculated as the total power consumption E of the air conditioner. The power consumption Ep of the air cleaner 10, the power consumption Ev of the ventilation fan motor 11, and the power consumption Ed of the display unit 20 are substantially constant power and are stored in advance in the memory 101.

  Then, the total power consumption E calculated by the total power calculation unit 100 is displayed on the display unit 20. The display unit 20 includes 7-segment elements of light emitting diodes for two digits, and also includes display elements of [•] and power units [k] and [W] between the numbers. This display is presented to the user through the transmissive display portion 2a of the movable panel 2. That is, when the (instantaneous) power consumption is less than 100 W, for example, 50 W is displayed with a two-digit number and [W], such as “50 W”. In the case of 100 W to less than 2 kW, a two-digit number and [•], [k], and [W] between the numbers are displayed. For 500 W, the effective number is displayed as two digits, such as “0.5 kW” and 1800 kW, “1.8 kW”. Any fraction that cannot be displayed is rounded off.

  Thus, by estimating the power consumption Ef of the indoor fan motor 12 based on the on / off switching signal on / off duty Du supplied to the indoor fan motor 12, an estimation error due to the influence of a load such as air resistance is estimated. And power consumption Ef can be estimated appropriately. This significantly improves the reliability of power estimation.

[2] Next, a second embodiment of the present invention will be described.
The second embodiment is an example in which the estimated accuracy is improved by correcting the estimated value of the power consumption of the indoor fan motor by the operation of the wind direction changing device that changes the blowing wind direction of the indoor unit. In the second embodiment, the indoor control unit 60 is configured as shown in FIG. That is, the memory 101, the outdoor unit power detection unit 102, and the fan motor power estimation unit 103 are connected to the total power calculation unit 100, and the drive circuit 65 is connected to the fan motor power estimation unit 103. Further, a correction value Ea determination unit 105 and a correction value Eb determination unit 107 are connected to the total power calculation unit 100, and the vertical direction angle Lav of the vertical louver 5a is connected to the correction value Ea determination unit 105 and the correction value Eb determination unit 107. Is connected to the Lv input unit 106 for inputting the horizontal direction angle Lbv of the left-right direction louver 5b. Since the vertical direction angle Lav of the vertical louver 5a and the horizontal direction angle Lbv of the horizontal direction louver 5b are determined by the indoor control unit 60 according to the driving situation and the user's remote control operation, each input unit 106, 108 is an indoor control unit. It serves to receive the angle data determined at 60.

  The correction value Ea determination unit 105 calculates a correction value Ea (W) for the power consumption Ef estimated by the fan motor power estimation unit 103 according to the vertical direction angle Lav of the vertical direction louver 5a input to the Lav input unit 106. decide. The correction value Eb determination unit 107 calculates a correction value Eb (W) for the power consumption Ef estimated by the fan motor power estimation unit 103 according to the left-right direction angle Lbv of the left-right direction louver 5b input to the Lbv input unit. decide.

  The up-down direction louver 5a and the left-right direction louver 5b exist as ventilation resistance in the ventilation path of the indoor fan, and the resistance varies according to the up-down direction angle Lav of the up-down direction louver 5a and the horizontal direction angle Lbv of the left-right direction louver 5b. . This change in ventilation resistance is a change in ventilation load for the indoor fan motor 12, and correction values Ea and Eb for the estimated power consumption Ef are determined according to the load. FIG. 6 shows the relationship between the load change and the correction values Ea and Eb. The correction values Ea and Eb increase toward the + side as the load becomes larger than the load reference point, and the load becomes smaller than the load reference point. The correction values Ea and Eb increase toward the negative side. As can be seen from this figure, each correction value is set so that the power consumption of the indoor fan motor increases if the blast load decreases depending on the position of the louver, and conversely the power consumption of the indoor fan motor decreases if the blast load increases. Determined.

  Specifically, FIG. 7 shows how the correction value Ea is determined according to the vertical angle Lav of the vertical louver 5a. That is, when the vertical louver 5a is between the vertical angle Lav = “A position”, which is the fully open position, and the vertical angle Lav = “B position”, which is slightly closed, the correction value Ea is “−2X”. Is determined. When the vertical angle Lav = “B position” and the vertical angle Lav = “C position” which is the load reference point, the correction value Ea is determined as “−X”. When the vertical angle Lav = “C position” and the vertical angle Lav = “D position”, which is slightly closed, “+ X” is determined as the correction value Ea. When the vertical angle Lav = “D position” and the vertical angle Lav = “E position” which is the fully closed position, “+ 2X” is determined as the correction value Ea.

  In the case of the up / down direction louver 5a, the load becomes lighter as the up / down direction angle Lav increases, so the correction value Ea increases in the minus direction as the up / down direction angle Lav becomes larger than the load reference point, and conversely the up / down direction angle Lav becomes the load reference. The correction value Ea is increased in the positive direction as it becomes smaller than the point.

  FIG. 8 shows how the correction value Eb is determined according to the left-right direction angle Lbv of the left-right direction louver 5b. That is, when the left-right direction louver 5b is between the left-right direction angle Lbv = “A position”, which is the leftmost position, and the right-left direction angle Lbv = “B position”, the correction value Eb is “−2X”. "Is determined. When the left-right direction angle Lbv = “B position” and the right-side left-right direction angle Lbv = “C position”, the correction value Eb is determined as “−X”. When the left-right direction angle Lbv = “C position” and the left-right direction angle Lbv = “D position” which is the load reference point, “+ X” is determined as the correction value Eb. When the left-right direction angle Lbv = “D position” and the left-right direction angle Lbv = “E position” slightly to the right, “+ X” is determined as the correction value Eb. When the left-right direction angle Lbv = “E position” and the right-side left-right direction angle Lbv = “F position”, the correction value Eb is determined as “−X”. When the left-right direction angle Lbv = “F position” and the left-right direction angle Lbv = “G position”, which is the rightmost position, “−2X” is determined as the correction value Eb.

  In the case of the left-right direction louver 5b, the larger the left-right direction angle Lbv is, the more the left-right direction is closed, the more the blow-out opening is closed. For this reason, the correction value Eb is increased in the minus direction as the left-right direction angle Lbv is further left and right from the load reference point.

The total power calculation unit 100 corrects the estimated power consumption Ef according to the correction values Ea and Eb. By this correction, the power consumption Ef can be obtained appropriately without being affected by the air resistance load corresponding to the angular positions of the vertical louver 5a and the horizontal louver 5b.
Then, the total power calculation unit 100 includes the corrected power consumption Ef ′, the power consumption Eo detected by the outdoor unit power detection unit 102, the power consumption Ep of the air cleaner 10, the power consumption Ev of the ventilation fan motor 11, The sum of the power consumption Ed and the like of the display unit 20 is calculated as the total power consumption E of the air conditioner. The calculated total power consumption E is displayed on the display unit 20.
Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

  In the present embodiment, the fan motor power estimating unit 103 is not only for estimating the power consumption Ef of the indoor fan motor 12 from the on / off duty Du, but also from the rotational speed of the indoor fan as in the conventional example. The accuracy of estimation can be improved even if the present invention is applied to an apparatus that estimates the power consumption of the fan motor 12.

  Further, in the present embodiment, as the wind direction changing device, both the left and right and upper and lower wind direction changing louvers have been described, and an example in which correction values are added according to the angles of both louvers has been described. The present invention can also be applied to an indoor unit having only a louver. Furthermore, even if a correction value is added only to the angle of one louver for an indoor unit having both wind direction changing louvers, the power consumption estimation accuracy is improved as compared with the conventional method.

  This embodiment is characterized in that the fluctuation of power consumption due to the change in the load of the indoor fan is changed by the operation of the wind direction changing device, and it is not a plate-like louver method, but the entire blowing air passage is deformed and moved. Even in an air conditioner that changes the wind direction, the load of the indoor fan naturally changes in response to the change in the wind direction.

[3] A third embodiment of the present invention will be described.
In the third embodiment, the indoor control unit 60 is configured as shown in FIG. That is, the memory 101, the outdoor unit power detection unit 102, and the fan motor power estimation unit 103 are connected to the total power calculation unit 100, and the drive circuit 65 is connected to the fan motor power estimation unit 103. Further, the correction value Eac determination unit 109 is connected to the total power calculation unit 100.

  The correction value Eac determination unit 109 determines a correction value Eac for the estimated power consumption Ef according to the AC voltage Vac detected by the voltage sensor 54. This is a correction performed because the power consumption is smaller when the AC motor has a lower AC voltage when compared with the same on / off duty.

  FIG. 10 shows how the correction value Eac is determined according to the AC voltage Vac. That is, when the AC voltage Vac is lower than the rated voltage Vaco by a predetermined voltage Vc or more, “−3Y” is determined as the correction value Eac. When the AC voltage Vac is lower than the rated voltage Vaco by a predetermined voltage Vb or higher and higher than the above (Vaco−Vc), “−2Y” is determined as the correction value Eac. When the AC voltage Vac is lower than the rated voltage Vaco by a predetermined voltage Va and higher than the above (Vaco−Vb), “−Y” is determined as the correction value Eac. When the AC voltage Vac is lower than the rated voltage Vaco and higher than the above (Vaco−Va), “−Y” is similarly determined as the correction value Eac. When the AC voltage Vac is higher than the rated voltage Vaco by a predetermined voltage Vc or more, “+ 3Y” is determined as the correction value Eac. When the AC voltage Vac is higher than the rated voltage Vaco by a predetermined voltage Vb and lower than the above (Vaco + Vc), “+ 2Y” is determined as the correction value Eac. When the AC voltage Vac is higher than the rated voltage Vaco by a predetermined voltage Va and lower than the above (Vaco−Vb), “+ Y” is determined as the correction value Eac. When the AC voltage Vac is higher than the rated voltage Vaco and lower than the above (Vaco−Va), “+ Y” is similarly determined as the correction value Eac.

The total power calculation unit 100 corrects the estimated power consumption Ef according to the correction value Eac. By this correction, the power consumption Ef of the indoor fan motor 12 can be obtained appropriately regardless of the fluctuation of the AC voltage Vac of the commercial AC power supply AC.
Then, the total power calculation unit 100 includes the corrected power consumption Ef ′, the power consumption Eo detected by the outdoor unit power detection unit 102, the power consumption Ep of the air cleaner 10, the power consumption Ev of the ventilation fan motor 11, The sum of the power consumption Ed and the like of the display unit 20 is calculated as the total power consumption E of the air conditioner. The calculated total power consumption E is displayed on the display unit 20.
Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

[4] A fourth embodiment of the present invention will be described.
In the fourth embodiment, the indoor control unit 60 is configured as shown in FIG. That is, the memory 101, the outdoor unit power detection unit 102, and the fan motor power estimation unit 103 are connected to the total power calculation unit 100, and the drive circuit 65 is connected to the fan motor power estimation unit 103. Further, the correction value Ec determination unit 110 is connected to the total power calculation unit 100.

  The correction value Ec determination unit 110 determines a correction value Ec for the estimated power consumption Ef according to the indoor heat exchanger temperature TC detected by the heat exchanger temperature sensor in the sensor group 67. This is to cope with the fact that the specific gravity of the air becomes heavier as the temperature of the air blown by the indoor fan becomes lower, and as a result, the blowing load becomes heavier. When the temperature of the blown air is low, the correction value Ec is set. Enlarge. The output of the indoor temperature sensor Ta may be used as the temperature of the air. However, in the air conditioner of this embodiment, the indoor fan is disposed on the downstream side of the heat exchanger. Is the air after heat exchange, and therefore the correction value Ec is determined based on the indoor heat exchanger temperature TC. On the other hand, when the indoor unit has an indoor fan arranged on the upstream side of the heat exchanger (push-in type), the air that is the load of the indoor fan is indoor air. Accordingly, it is desirable to determine a correction value Ec for the estimated power consumption Ef.

  FIG. 12 shows how the correction value Ec is determined according to the indoor heat exchanger temperature TC. That is, when the indoor heat exchanger temperature TC is lower than the reference temperature Tco by a predetermined temperature Tc or more, “+ 3Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is lower than the reference temperature Tco by a predetermined temperature Tb or more and higher than the above (Tco−Tc), “+ 2Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is lower than the reference temperature Tco by a predetermined temperature Ta or higher and higher than the above (Tco−Tb), “+ Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is lower than the reference temperature Tco and higher than the above (Tco−Ta), “+ Z” is similarly determined as the correction value Ec. When the indoor heat exchanger temperature TC is higher than the reference temperature Tco by a predetermined temperature Tc or more, “−3Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is higher than the reference temperature Tco by a predetermined temperature Tb or more and lower than the above (Tco + Tc), “−2Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is higher than the reference temperature Tco by a predetermined temperature Ta or more and lower than the above (Tco−Tb), “−Z” is determined as the correction value Ec. When the indoor heat exchanger temperature TC is higher than the reference temperature Tco and lower than the above (Tco−Ta), “−Z” is similarly determined as the correction value Ec.

The total power calculation unit 100 corrects the estimated power consumption Ef according to the correction value Ec. By this correction, the power consumption Ef of the indoor fan motor 12 can be appropriately obtained regardless of the fluctuation of the indoor heat exchanger temperature TC.
Then, the total power calculation unit 100 includes the corrected power consumption Ef ′, the power consumption Eo detected by the outdoor unit power detection unit 102, the power consumption Ep of the air cleaner 10, the power consumption Ev of the ventilation fan motor 11, The sum of the power consumption Ed and the like of the display unit 20 is calculated as the total power consumption E of the air conditioner. The calculated total power consumption E is displayed on the display unit 20.
Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

[5] Modification of each embodiment
In addition, this invention is not limited to said each embodiment, A various deformation | transformation implementation is possible in the range which does not change a summary. In addition, any one of the embodiments can be combined as appropriate to form one embodiment. It is possible to appropriately combine any of a plurality of constituent elements among the constituent elements disclosed in each embodiment.

The external appearance perspective view of the indoor unit in each embodiment of this invention. The block diagram which shows the control circuit of the indoor unit in each embodiment. The block diagram which shows the structure of the principal part of the indoor control part in 1st Embodiment. The figure which shows the relationship between the on-off duty in each embodiment, and an electric power estimated value. The block diagram which shows the structure of the principal part of the indoor control part in 2nd Embodiment. The figure which shows the relationship between the load and correction value in 2nd Embodiment. The figure which shows the relationship between the angle of the up-down direction louver, and a correction value in 2nd Embodiment. The figure which shows the relationship between the angle of the left-right direction louver and correction value in 2nd Embodiment. The block diagram which shows the structure of the principal part of the indoor control part in 3rd Embodiment. The figure which shows the relationship between the alternating voltage in 3rd Embodiment, and a correction value. The block diagram which shows the structure of the principal part of the indoor control part in 4th Embodiment. The figure which shows the relationship between the indoor heat exchanger temperature in 4th Embodiment, and a correction value.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2 ... Movable panel, 3 ... Suction inlet, 4 ... Air outlet, 5a ... Vertical direction louver, 5b ... Left-right direction louver, 12 ... Indoor fan motor, 20 ... Display unit, 50 ... Indoor substrate, 51 ... Power circuit 52 ... Inverter 60 ... Indoor control unit 61, 63, 64, 65 ... Drive circuit 100 ... Total power calculation unit 101 ... Memory 102 ... Outdoor unit power detection unit 103 ... Fan motor power estimation unit , 105 ... correction value Ea determination unit, 106 ... Lav input unit, 107 ... correction value Eb determination unit, 108 ... Lbv input unit, 109 ... correction value Eac determination unit, 110 ... correction value Ec determination unit

Claims (5)

In air conditioners consisting of indoor units and outdoor units,
An inverter that converts the voltage of the commercial AC power source into direct current, converts it into alternating current by switching, and outputs it as drive power to the indoor fan motor of the indoor unit;
Estimating means for estimating the power consumption of the indoor fan motor from the on / off duty of switching of the inverter;
An air conditioner comprising: In air conditioners consisting of indoor units and outdoor units,
An inverter that converts the voltage of the commercial AC power source into direct current, converts it into alternating current by switching, and outputs it as drive power to the indoor fan motor of the indoor unit;
Estimating means for estimating the power consumption of the indoor fan motor from the output of the inverter or the state of the indoor fan motor;
Correction means for correcting the power consumption estimated by the estimation means according to the operation of the wind direction changing device provided at the outlet of the indoor unit;
An air conditioner comprising:   The air conditioner according to claim 1, further comprising a correction unit that corrects the power consumption estimated by the estimation unit according to a voltage level of the commercial AC power supply.   The air conditioner according to claim 1, further comprising a correcting unit that corrects power consumption estimated by the estimating unit according to a temperature of an indoor heat exchanger in the indoor unit. Calculation means for calculating the total power consumption of the air conditioner including the power consumption estimated by the estimation means or the power consumption corrected by the correction means;
Display means for displaying the total power consumption calculated by the calculating means;
The air conditioner according to any one of claims 1 to 4, further comprising:

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