JP3732809B2 - Air conditioner heating operation control method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner, and more particularly to a heating operation control method for an air conditioner.
[0002]
[Prior art]
Generally, an air conditioner is a device that is attached to an indoor space such as a store, an office, or a home to cool or heat the room. Such an air conditioner includes a compressor, a first heat exchanger, a second heat exchanger, and an expansion valve that form a refrigeration cycle. The indoor air conditioner cools or heats the room by continuous evaporating action and condensing action of the circulating refrigerant. Become.
[0003]
In the air conditioner, any of the components described above can be attached to a single case, but in order to create a comfortable indoor environment, an indoor unit that normally includes the first heat exchanger, and the second heat Divided into an exchange and an outdoor unit containing a compressor. At this time, heating air or cooling air is generated through the first heat exchanger according to the flow direction of the refrigerant.
[0004]
Describing the above process schematically, first, in order to heat the room, a refrigerant gas compressed to a high temperature and a high pressure by the compressor is sent to the first heat exchanger, and the refrigerant gas passes through the first heat exchanger. Is condensed while exchanging heat with room air. At this time, the room air that has passed through the first heat exchanger is heated to be discharged into the room. The room air heated to high temperature from this process is exhaled in the direction desired by the user by the air direction adjusting member and heated. Subsequently, the refrigerant liquid condensed from the first heat exchanger is depressurized at a pressure that easily evaporates while passing through the expansion valve, and is sent to the second heat exchanger, and the refrigerant liquid is passed through the second heat exchanger. It is evaporated while exchanging heat with air. At this time, the outdoor air that has passed through the second heat exchanger is cooled down and discharged to the outside.
[0005]
In order to cool the room, the refrigerant circulates in the direction opposite to the above direction.
Accordingly, the refrigerant heat condenses in the second heat exchanger, and the refrigerant evaporates in the first heat exchanger. In this case, the room air is cooled down through the first heat exchanger to cool the room.
[0006]
The air conditioner that operates as described above has a uniform fan, compressor, and wind direction adjusting member that forcibly circulates the room air from the start to the end unless the user performs another operation. To be operated. As a result, the air conditioner has the following problems during heating operation.
[0007]
That is, it takes a long time until the temperature of the entire room reaches the desired temperature by uniformly operating the blower fan and the compressor from the start to the end of operation.
Therefore, while the room temperature reaches the desired temperature, the user is in trouble, for example, cold air is supplied to the user.
Also, unless another operation is performed by the user from the start to the end of the operation, considerable time is required to heat the balance of the indoor space satisfactorily by discharging the heating air in a constant wind direction.
[0008]
Generally, the wind direction adjusting member has upper, upper, middle, middle, lower, and lower discharge angles. However, when there is no user operation, the wind direction adjusting member has a medium discharge angle. Accordingly, the heating air is naturally discharged into the middle of the room, and in this case, a large temperature difference is generated between the upper and lower parts of the room for a certain time. That is, the heating air discharged to the middle of the room has a low density, so it is difficult to rise. In this case, the relatively cool air in the upper part of the room is lowered because the density is relatively high. Therefore, during heating operation, the indoor space can only be heated in the order of top, middle, and bottom. However, since the user is actually located at the bottom, there is a problem that sufficient heating air is not supplied in the early stage of the heating operation.
[0009]
[Problems to be solved by the invention]
The present invention is to solve the above-described problems of the prior art, and to provide a heating operation control method for an air conditioner that can shorten the time required to reach a user's desired temperature during heating operation. Objective.
[0010]
Another object of the present invention is to provide a heating operation control method for an air conditioner that can quickly eliminate the temperature difference in the indoor space during heating operation.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a heating operation control method for an air conditioner according to the present invention comprises:
Power heating mode to supply heating air by changing the refrigerant discharge amount and air volume and direction according to the operation time in order to quickly raise the room temperature early in the operation and quickly eliminate the temperature difference in the room, selected by the user It is characterized by comprising a general heating mode in which heating air is supplied in a constant air volume and a constant air direction until reaching a desired temperature.
[0012]
At this time, the power heating mode is realized by the following two methods.
That is, in the power heating mode, in order to increase the indoor temperature rapidly, a rapid operation stage in which the compressor is operated at the maximum operating frequency during a first set time, and after the rapid operation stage, the indoor temperature difference is quickly increased. In order to solve this problem, the method includes a slow operation stage in which the compressor is operated at an operation frequency that is varied depending on the room temperature during a second set time.
Further, the slow operation stage includes the stage where the compressor is operated at a variable operation frequency determined by the room temperature, and the air volume adjusting member is upward, middle upward, and intermediate When the airflow is adjusted downward, the airflow direction adjusting member is adjusted downward so that the heating air is concentrated on the bottom of the room, and the first blower fan is operated to the medium wind. Stage.
[0013]
According to another embodiment of the present invention, the power heating mode is a rapid operation stage in which the compressor is operated at a maximum operating frequency for a first set time in order to rapidly increase the indoor temperature, and after the rapid operation stage. A step of comparing the temperature of the sucked room air with a set temperature, and a constant frequency lower than the maximum operating frequency for a second set time when the temperature of the room air is equal to or higher than the set temperature in the temperature comparison step. When the room air temperature is lower than the set temperature in the first slow speed operation stage that eliminates the temperature difference in the room and the temperature comparison stage, the compressor is controlled according to the room temperature during the second set time. It comprises a second slow operating stage in which the temperature difference in the room is eliminated while operating at a variable operating frequency.
[0014]
Accordingly, the present invention provides an advantage of reducing the time required for the room temperature to reach the desired temperature through the rapid operation stage during the heating operation, and the room temperature through the slow operation stage. Providing the advantage that the difference can be resolved quickly.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
In the figure, parts having the same configuration are denoted by the same reference numerals.
[0016]
Referring first to FIG. 1, an air conditioner according to the present invention includes a compressor 1 that compresses a refrigerant to high temperature and pressure, a first heat exchanger 2 that condenses the compressed refrigerant, and an expansion valve 3 that adiabatically expands the condensed refrigerant. And the second heat exchanger 4 that evaporates the refrigerant adiabatically expanded at a constant pressure. At this time, the first heat exchanger 2 and the second heat exchanger 4 perform opposite functions depending on the flow direction of the refrigerant.
[0017]
The operation speed of the compressor 1 varies depending on the frequency of the applied voltage (hereinafter referred to as operation frequency), and the refrigerant discharge amount is changed accordingly. That is, as the operating frequency of the compressor 1 increases, the refrigerant discharge amount increases in proportion.
A first blower fan 2a is attached to one side of the first heat exchanger 2 to help the refrigerant condensing action by forcibly circulating air, and the air is forced to circulate to the one side of the second heat exchanger 4 A second blower fan 4a is attached to help evaporate the air. At this time, the first blower fan 2a and the second blower fan 4a are operated with strong wind, medium wind, and weak wind according to the air discharge amount.
Thus, the comprised air conditioner is comprised in the indoor unit in which the said 1st heat exchanger 2 is attached, and the outdoor unit in which the said 2nd heat exchanger 4 and the compressor 1 are attached.
[0018]
As shown in FIG. 2, the indoor unit has a case 10 in which a suction port 10 a is formed in the lower part and a discharge port 10 b is formed in the upper part, and a first heat exchanger (2 in FIG. 1) attached to the inside of the case 10. And a first blower fan (2a in FIG. 1). At this time, a wind direction adjusting member 20 for adjusting the wind direction of the discharged air is attached to the discharge port. The wind direction adjusting member 20 adjusts the wind direction of the discharged air in five stages: upward, middle upward, intermediate, and downward.
[0019]
A display unit 30 is attached to one side of the front surface of the case 10 to inform the user of the operating state of the device. The display unit 30 is provided with a number of buttons for guiding a user's operation. Among the buttons, the display unit 30 includes a button for selecting a heating operation from a power heating mode and a general heating mode. At this time, a control unit for controlling the entire operation of the device is attached to the back surface of the display unit 30.
The controller controls the air volume of the first blower fan and the second blower fan and the position of the wind direction adjusting member 20 as well as the applied voltage of the compressor.
[0020]
At this time, the power heating mode is an operating state in which heating air is supplied by changing the refrigerant discharge amount, the air amount and the air direction according to the operation time in order to quickly increase the indoor temperature and quickly eliminate the indoor temperature difference. Means. Such a power heating mode can be applied very effectively in the early stage of heating operation, and details thereof will be described later.
The general heating mode means an operation state in which heating air is supplied to a constant air volume and a constant air direction until reaching a desired temperature selected by the user. That is, in the general heating mode, the air volume adjusting member 20 is adjusted to medium wind and the first blower fan 2a is operated to medium wind.
[0021]
Hereinafter, a heating operation control method for an air conditioner according to the present invention will be described in more detail.
First, a heating operation control method for an air conditioner according to an embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 3, first, in the control unit, it is determined whether the operation state input from the user is the power heating mode or the general heating mode (S1). At this time, the user can operate the buttons of the display 30 or input the driving state via the remote controller.
[0022]
When the general heating mode is input as a result of the determination, the control unit operates the wind direction adjusting member 20 and the first blower fan 2a to the preset wind direction and air volume until the room temperature reaches the user's desired temperature. (S10).
When the power heating mode is input as a result of the determination, the control unit determines whether or not the operation time reaches the first set time while checking the operation time (S2) (S3).
[0023]
At this time, the control unit performs a rapid operation stage in order to rapidly increase the room temperature until the operation time reaches the first set time (S20).
For this reason, the rapid operation stage (S20) is generated via the first heat exchanger 2 and the stage (S21) in which the compressor 1 is operated at the maximum operation frequency so that the refrigerant discharge amount is maximized. When the air flow rate adjusting member 20 is adjusted downward so that the heated air is concentrated on the bottom of the room (S22), the first blower fan 2a is turned to a strong wind so that the amount of heating air discharged becomes maximum. The operation stage (S23) is included. At this time, it is desirable that the second blower fan 4a attached to the outdoor unit is also operated in a strong wind (S24). This is to improve the efficiency of the compressor 1 operated at the maximum operating frequency and the heat exchange efficiency in the first heat exchanger 2.
[0024]
In addition, when the operation time reaches the first set time, the controller performs a slow operation step (S30) in order to quickly eliminate the indoor temperature difference. Thereafter, the controller determines whether or not the second set time has been reached (S4), and performs a slow speed operation step (S30) until the second set time.
[0025]
For this reason, the slow speed operation step (S30) is performed when the compressor 1 is operated at a variable operation frequency determined by the room temperature (S31), and the air volume adjustment is performed so that the heating air is concentrated on the indoor bottom. The step of adjusting the member 20 downward (S32) and the step of operating the first blower fan 2 in medium wind (S33) are performed. Of course, in this case as well, in order to improve the efficiency of the compressor 1 and the efficiency of heat exchange in the first heat exchanger 2, it is desirable that the second blower fan 4a is operated in a weak wind (S34).
[0026]
In the slow operation step S30, the operating frequency of the compressor 1 is determined by the difference between the temperature (Ts) and the temperature of the indoor air to be sucked (Td) when the compressor is stopped, which is set according to the user's desired temperature. It is done. Here, the stop temperature (Ts) of the compressor is a temperature obtained by adding approximately 3 to 4 ° C. by increasing the room temperature to some extent. At this time, in order for the compressor 1 to operate optimally, the compressor 1 preferably has a multi-stage operation frequency according to a temperature difference (Ts−Td), and at least the maximum frequency and the minimum operation frequency. And having a rated operating frequency in between.
[0027]
As shown in FIG. 4, in the slow operation stage, the compressor 1 is operated at the minimum operation frequency when Ts−Td is 0.0 to 0.99 ° C., and the Ts−Td is 1. If it is 0-2.49 degreeC, it will drive | operate to a rated operation frequency, and if the said Ts-Td is 2.5 degreeC or more, it will drive | operate to a maximum operation frequency. That is, the large Ts−Td means that the difference between the room temperature and the desired temperature is large, and therefore the compressor 1 is proportional to the Ts−Td in order to quickly eliminate the room temperature difference. Should be driven to the operating frequency.
[0028]
In addition, as shown in FIG. 5, it turns out that the operating frequency of the said compressor 1 is subdivided from FIG. In this case, of course, the compressor 1 can be operated more optimally.
As shown in FIG. 5, a first operating frequency and a second operating frequency exist between the minimum operating frequency and the rated operating frequency, and a third operating frequency exists between the rated operating frequency and the maximum operating frequency. To do. At this time, the second operating frequency is higher than the first operating frequency, and the third operating frequency is higher than the second operating frequency.
[0029]
In this case, in the slow operation step S30, the compressor 1 is operated at a first operation frequency between the minimum operation frequency and the rated operation frequency if Ts-Td is 0.5 to 0.99 ° C. If the Ts-Td is 1.0 to 1.49 ° C., it is operated at a second operating frequency between the minimum operating frequency and the rated operating frequency, and the Ts-Td is 2.0 to 2.49 ° C. For example, it is operated at a third operating frequency between the rated operating frequency and the maximum operating frequency.
Thereafter, when the operation time reaches the second set time, the control unit ends the power heating mode, automatically switches to the general heating mode, and heats the continuous room (S10).
[0030]
In short, in the first embodiment of the present invention, the operation speed of the compressor 1 is controlled according to time in the rapid operation stage (S20), and the operation speed of the compressor 1 is increased over time in the slow operation stage (S30). Control by temperature. This effectively increases the room temperature to the desired temperature and effectively eliminates the room temperature difference.
[0031]
A heating operation control method for an air conditioner according to another embodiment of the present invention will be described with reference to FIGS. 6 and 7 as follows.
As shown in FIGS. 6 and 7, first, the control unit determines whether the operation state input by the user is the power heating mode or the general heating mode (S1). As a result of the determination, when the general heating mode is input, the control unit operates the wind direction adjusting member 20 and the first blower fan 2 at the preset wind direction and air volume until the room temperature reaches the user's desired temperature. (S10).
[0032]
When the power heating mode is input as a result of the determination, the control unit determines whether or not the operation time reaches the first set time while checking the operation time (S2) (S3). At this time, the control unit performs a rapid operation stage in order to rapidly increase the room temperature until the operation time reaches the first set time (S20).
[0033]
The rapid operation step (S20) includes a step (S21) in which the compressor 1 is operated at the maximum operating frequency, a step (S22) in which the air volume adjusting member 20 is adjusted downward, and the first blower fan 2 is in a strong wind. (S23). At this time, it is desirable that the second blower fan 4 of the outdoor unit is also operated in a strong wind (S24). The rapid operation stage (S20) is the same as in the first embodiment.
[0034]
Next, when the operation time reaches the first set time, the control unit compares the temperature of the indoor air sucked for heat exchange with the set temperature (S5). At this time, the set temperature is lower than the user's desired temperature, and becomes a reference for differently controlling the compressor 1 and the wind direction adjusting member 20 and the like in order to more efficiently eliminate the indoor temperature difference.
As a result of the comparison, if the intake temperature of the indoor air is equal to or higher than the set temperature, the control unit eliminates the temperature difference in the room while operating the compressor 1 at a constant operating frequency smaller than the maximum operating frequency for the second set time. A first slow driving stage is performed (S40).
[0035]
In the first slow speed operation step (S40), the compressor 1 is operated at an operation frequency between a minimum operation frequency and a rated operation frequency (S41), and the air volume adjusting member 20 is adjusted in a downward direction. A step (S42) and a step (S43) in which the first blower fan 2 is operated to a medium wind. At this time, the compressor 1 can be operated at the first operating frequency or the second operating frequency of FIG.
[0036]
In this case, in order to improve the efficiency of the compressor 1 and the heat exchange efficiency in the first heat exchanger 2, it is preferable that the second blower fan 4 is operated in a medium wind (S44).
As a result of the comparison, if the intake temperature of the indoor air is lower than the set temperature, the control unit operates the compressor 1 at an operation frequency that is variable according to the room temperature for a second set time, The 2nd slow driving | running | working stage which eliminates is performed (S60).
The second slow operation step (S60) includes a step (S61) in which the compressor 1 is operated at a variable operation frequency determined by a room temperature, and a step (S62) in which the air volume adjusting member 20 is adjusted to a medium wind. The first blower fan 2 is operated in a medium wind (S63). Of course, also in this case, in order to improve the efficiency of the compressor 1 and the heat exchange efficiency in the first heat exchanger 2, it is desirable that the second blower fan 4 is operated in a weak wind (S64).
[0037]
In the second slow operation stage (S60), the operating frequency of the compressor 1 is determined by the difference between the compressor stop temperature Ts and the indoor air temperature Td, as in the first embodiment. It is done. At this time, in order for the compressor 1 to operate optimally, the compressor 1 preferably has a multi-stage operation frequency due to the temperature difference Ts-Td, and at least the maximum operation frequency, the minimum operation frequency, and the rated operation therebetween. It is desirable to have a frequency.
[0038]
That is, in the second slow operation stage (S60), if Ts-Td is 0.0 to 0.99 ° C., the compressor is operated at the minimum operation frequency, and Ts-Td is 1.0. When it reaches ˜2.49 ° C., it is operated at the rated operating frequency, and when Ts−Td is 2.5 ° C. or higher, it is operated at the maximum operating frequency. This is illustrated in FIG.
[0039]
In addition, in the second slow operation stage (S60), the compressor 1 can be operated at a more detailed operation frequency. That is, when Ts-Td is 0.5 to 0.99 ° C., the compressor 1 is operated at the first operating frequency between the minimum operating frequency and the rated operating frequency, and the Ts-Td is 1.0. If it is ˜1.49 ° C. or higher, it is operated at a second operating frequency between the minimum operating frequency and the rated operating frequency, and if Ts−Td is 2.0 to 2.49 ° C., the rated operating frequency and maximum Driving to a third operating frequency between operating frequencies. This is illustrated in FIG.
[0040]
Thereafter, when the operation time reaches the second set time, the control unit ends the power heating mode, automatically switches to the general heating mode, and continues to heat the room (S10).
In short, the second embodiment of the present invention operates the compressor at a constant operating frequency according to the room temperature increased from the slow operating stage through the rapid operating stage or while operating at the operating frequency variable by the room temperature. The temperature difference in the room will be resolved quickly.
[0041]
【The invention's effect】
As described above, the air conditioner heating operation control method of the present invention has the following effects.
That is, it is possible to shorten the time taken from the start of the heating operation to the desired temperature, and to provide an effect that the temperature difference in the room can be eliminated more quickly.
Therefore, the user can be quickly supplied with the heating air at the desired temperature in the initial stage of operation.
[0042]
Although a preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications or changes can be made based on the technical idea of the present invention.
[Brief description of the drawings]
FIG. 1 is a block diagram showing components of an air conditioner according to the present invention.
FIG. 2 is a perspective view showing the indoor unit of the air conditioner according to the first embodiment of the present invention.
FIG. 3 is a flowchart showing a heating operation control method of the air conditioner according to the first embodiment of the present invention.
FIG. 4 is a diagram illustrating a method for selecting an optimum operating frequency of a compressor among heating operation control methods for an air conditioner according to the present invention.
FIG. 5 is a diagram illustrating a method for selecting an optimum operating frequency of a compressor among heating operation control methods for an air conditioner according to the present invention.
FIG. 6 is a flowchart showing a heating operation control method for an air conditioner according to a second embodiment of the present invention.
FIG. 7 is a flowchart showing a heating operation control method for an air conditioner according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Compressor 2 ... 1st heat exchanger 2a ... 1st ventilation fan 3 ... Expansion valve 4 ... 2nd heat exchanger 4a ... 2nd ventilation fan 10 ... Case 20 ... Wind direction adjustment member 30 ... Display part

Claims (19)

Between the compressor and the first heat exchanger及beauty second heat exchanger circulates the refrigerant, a first blower fan to the first heat exchanger side are provided second blower fan respectively to the second heat exchange side, spitting In the heating operation control method of an air conditioner including a wind direction adjusting member that adjusts the wind direction of air up and down,
The heating operation control method of the air conditioner is:
Quickly raise the room temperature to the heating operation initial of the air conditioner, the power heating mode to quickly eliminate the temperature difference between the room,
User Ri is Do and a general heating mode supplying the heating air to constant wind direction, which is pre-set constant air volume and preset before reaching the desired temperature selected, the power heating mode,
(A) a rapid operation stage in which the compressor is operated at a maximum operation frequency for a first set time in order to quickly raise the room temperature;
(B) After the step (a), it comprises a slow operation step for quickly eliminating the temperature difference in the room, and the step (b)
(B1) the compressor is operated at a variable operating frequency determined by the room temperature;
(B2) When the air volume adjusting member is adjusted upward, middle upward, middle, middle downward, or downward depending on the direction of air discharge, the air direction is adjusted so that the heating air is concentrated on the indoor bottom. The adjustment member is adjusted downward;
(B3) the first blower fan is driven to a medium wind;
A heating operation control method for an air conditioner. The step (a) includes:
  (A1) the compressor is operated at a maximum operating frequency;
  (A2) adjusting the wind direction adjusting member downward so that the heating air is concentrated on the bottom of the room;
  (A3) The heating operation control method for an air conditioner according to claim 1, wherein the first blower fan is operated in a strong wind so that a discharge amount of the heating air is maximized. The step (a) includes:
  (A4) the second air blowing fan is operated in a strong wind;
The heating operation control method for an air conditioner according to claim 2, comprising: In step (b),
  (B4) The heating operation control method for an air conditioner according to claim 3, further comprising the step of operating the second blower fan in a weak wind. In the step (b1), the number of compressors is at least three or more determined by a difference between a compressor stop temperature (Ts) set according to a user's desired temperature and a temperature (Td) of the intake air. The heating operation control method for an air conditioner according to claim 3, wherein the air conditioner is operated at an operation frequency of 5. The step (b1) includes
  (B11) If the Ts-Td is 0.0 to 0.99 ° C, the compressor is operated at a minimum operating frequency;
  (B12) If the Ts-Td is 1.0 to 2.49 ° C., the compressor is operated at a rated operating frequency;
  (B13) If Ts-Td is 2.5 degreeC or more, it will consist of the stage which the said compressor is drive | operated to the maximum operation frequency, The heating operation control of the air conditioner of Claim 5 characterized by the above-mentioned. Method. The step (b11) includes
  The method according to claim 6, wherein if the Ts-Td is 0.5 to 0.99 ° C, the compressor is operated at an operation frequency between a minimum operation frequency and a rated operation frequency. The heating operation control method of the air conditioner described. The step (b12) includes:
  If the Ts-Td is 1.0 to 1.49 ° C., the compressor is operated at a second operating frequency between a minimum operating frequency and a rated operating frequency;
  If the Ts-Td is 2.0 to 2.49 ° C, the compressor is operated at a third operating frequency between a rated operating frequency and a maximum operating frequency. Item 7. A heating operation control method for an air conditioner according to Item 6. The heating operation control method for an air conditioner according to claim 1, wherein the power heating mode and the general heating mode are sequentially performed. A refrigerant circulates between the compressor, the first heat exchanger, and the second heat exchanger, a first blower fan is provided on the first heat exchanger side, and a second blower fan is provided on the second heat exchanger side, respectively. In the heating operation control method of an air conditioner including a wind direction adjusting member that adjusts the wind direction of
  The heating operation control method of the air conditioner is:
  Power heating mode for rapidly increasing the room temperature in the early stage of heating operation of the air conditioner and quickly eliminating the temperature difference in the room;
  It consists of a general air heating mode in which heating air is supplied to a preset constant air volume and a preset constant air direction until reaching a desired temperature selected by the user,
  The power heating mode is
  (A) a rapid operation stage in which the compressor is operated at a maximum operation frequency for a first set time in order to rapidly increase the room temperature;
  (B) after the step (a), comparing the temperature of the intake indoor air with a set temperature;
  (C) If the temperature of the room air is equal to or higher than the set temperature in the step (b), the temperature difference in the room is eliminated while the compressor is operated at a constant operating frequency smaller than the maximum operating frequency for the second set time. A first slow driving stage;
  (D) When the temperature of the room air is lower than the set temperature in the step (b), the temperature difference in the room is eliminated while the compressor is operated at an operation frequency that varies according to the room temperature during the second set time. 2 It consists of a slow driving stage,
  In step (d),
  (D1) the compressor is operated at a variable operating frequency determined by the room temperature;
  (D2) When the air volume adjusting member is adjusted upward, middle upward, middle, middle downward, and downward depending on the direction of air discharge, the air direction is adjusted so that the heating air is concentrated in the middle of the room. The adjustment member is adjusted in the middle direction;
  (D3) when the first blower fan is driven to strong wind, medium wind, and weak wind according to the amount of heating air discharged, the first blower fan is driven to medium wind.
  The heating operation control method of the air conditioner characterized by the above-mentioned. The step (a) includes:
  (A1) the compressor is operated at a maximum operating frequency;
  (A2) adjusting the wind direction adjusting member downward so that the heating air is concentrated on the bottom of the room;
  The heating operation control method for an air conditioner according to claim 10, further comprising: (a3) a step of operating the first blower fan in a strong wind so that a discharge amount of the heating air is maximized. The step (a) includes:
  (A4) The heating operation control method for an air conditioner according to claim 11, further comprising the step of operating the second blower fan in a strong wind. In step (c),
  (C1) the compressor is operated at an operating frequency between a minimum operating frequency and a rated operating frequency;
  (C2) the step of adjusting the wind direction adjusting member in the middle down direction;
  (C3) The first blower fan is operated to a medium wind. Item 11. A heating operation control method for an air conditioner according to Item 10. In step (c),
  (C4) The method further includes the step of operating the second blower fan in medium wind when the second blower fan is driven in strong wind, medium wind, and weak wind depending on the amount of outdoor air discharged. Item 14. A heating operation control method for an air conditioner according to Item 13. In step (d),
  (D4) The heating operation control method for an air conditioner according to claim 12, further comprising the step of operating the second blower fan in a weak wind. In the step (d1),
  The compressor is operated at at least three operating frequencies determined by a difference between a compressor stop temperature Ts determined by a user's desired temperature and a temperature (Td) of sucked indoor air. The heating operation control method for an air conditioner according to claim 12. The step (d1) includes
  (D11) If the Ts-Td is 0.0 to 0.99 ° C., the compressor is operated at a minimum operating frequency;
  (D12) If the Ts-Td is 1.0 to 2.49 ° C, the compressor is operated at a rated operating frequency;
  (D13) If Ts-Td is 2.5 degreeC or more, it will consist of the stage which the said compressor is drive | operated to the maximum operation frequency, The heating operation control of the air conditioner of Claim 16 characterized by the above-mentioned. Method. The step (d11) includes
  When the Ts-Td is 0.5 to 0.99 ° C, the compressor is operated at a first operating frequency between a minimum operating frequency and a rated operating frequency. Item 18. A heating operation control method for an air conditioner according to Item 17. The step (d12) includes:
  If the Ts-Td is 1.0 to 1.49 ° C., the compressor is operated at a second operating frequency between a minimum operating frequency and a rated operating frequency;
  When the Ts-Td is 2.0 to 2.49 ° C, the compressor is operated at a third operating frequency between a rated operating frequency and a maximum operating frequency. Item 18. A heating operation control method for an air conditioner according to Item 17.

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