JP2005147512A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of performing the heating operation for a long time without making a user uncomfortable. <P>SOLUTION: Wind direction plates 2-A, 2-B are set obliquely downward to guide the hot air to an approximately central area of a room by blowing the hot air obliquely downward, until the temperature difference between a set temperature set by a temperature setting means 11 at an initial period of the heating operation and a room temperature detected by a room temperature detecting means reaches a specific temperature, and the wind direction plate 2-B is set approximately just downward to blow out the hot air approximately just downward, when the temperature difference reaches the specific temperature, whereby the user is not directly exposed to the hot air in the heating operation for the long time, and does not feel discomfort. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner, and more particularly to control of a wind direction plate during heating operation.

  In Patent Document 1, when hot air obtained in a refrigeration cycle is blown into a room, the hot air is blown down until the temperature difference between the set temperature and the room temperature reaches a predetermined temperature. Is a diagonally lower balloon.

In patent document 2, when the comfort level of living space is more than a predetermined value, warm air is blown out toward the ceiling.
Japanese Patent Laid-Open No. 4-52443 (refer to the effect of the invention of the specification) Japanese Patent No. 3446478 (see specification 0008)

  However, in the air conditioner described in Patent Document 1, when the temperature difference between the set temperature and the room temperature reaches a predetermined temperature, the warm air is blown obliquely downward, so that the warm air is blown to the user in the room. There was a possibility that the user would feel uncomfortable when performing a heating operation for a long time.

  Moreover, in the air conditioner described in Patent Document 2, when the comfort level of the living space is greater than or equal to a predetermined value, the warm air is blown out toward the ceiling, so the upper part of the room is warm, The lower part may become cold, and there is a risk that the user may feel cold when sitting.

  An object of the present invention is to solve such a conventional problem and to provide an air conditioner capable of performing a heating operation for a long time without causing discomfort to the user.

  In order to achieve the above object, in the air conditioner according to the present invention, room temperature detecting means for detecting the room temperature, a wind direction plate for changing the wind direction of the blown wind, and a control unit for controlling the wind direction of the wind direction plate. The control unit blows out the wind direction to a substantially central portion of the room until the temperature difference between the set temperature and the room temperature reaches a predetermined temperature during the heating operation, and when the temperature difference reaches the predetermined temperature, The wind direction of the wind direction plate is controlled so as to blow out from the wall along the floor.

  According to the above configuration, until the temperature difference between the set temperature at the initial stage of the heating operation and the room temperature reaches a predetermined temperature, the wind direction is blown to the substantially central portion of the room, and the hot air hits the user in the substantially central region of the room. As a result, a feeling of heating can be obtained early. In addition, since the temperature difference reaches a predetermined temperature and the wall or floor is warmed to some extent, the direction of the wind is blown out from the wall along the floor. Does not hit the user and does not cause discomfort to the user.

  In particular, the following configuration is suitable for an air conditioner installed at a high place. That is, the air conditioner according to the present invention includes room temperature detection means for detecting the room temperature, a wind direction plate that changes the wind direction of the blown wind, and a control unit that controls the wind direction of the wind direction plate. During heating operation, until the temperature difference between the set temperature and the room temperature reaches a predetermined temperature, the airflow is blown diagonally downward with the wind direction plate inclined downward, and the temperature difference reaches the predetermined temperature. Then, the control is performed so that the warm air is blown out in the substantially downward direction with the wind direction plate substantially in the downward direction.

  In the above configuration, in the initial stage of heating, the wind direction plate is slanted downward and the warm air is blown obliquely downward to heat a substantially central region of the room, and the temperature difference between the set temperature and the room temperature reaches a predetermined temperature difference, After the room has warmed up to a certain extent, the wind direction plate is placed almost downward and the warm air is blown almost downward, and the warm air is blown from the wall along the floor. Can be improved.

  In addition, in order to set the timing for switching the blowing direction of warm air to an optimal time, room temperature detecting means for detecting the room temperature, a wind direction plate for changing the wind direction of the blown wind, and control for controlling the wind direction of the wind direction plate The controller counts an elapsed time from when the temperature difference between the set temperature and the room temperature reaches the first predetermined temperature difference until reaching a second predetermined temperature difference smaller than the first predetermined temperature difference. An interval time until the wind direction plate is changed from an obliquely downward direction to a substantially downward direction during heating operation is calculated based on the elapsed time, and the temperature difference reaches the second predetermined temperature difference. After that, until the interval time elapses, the wind direction plate is inclined downward and the warm air is blown obliquely downward, and when the interval time elapses, the wind direction plate is set substantially downward and the warm air is substantially directly below. Blowing in the direction It is also possible to control the Suyo.

  According to the above configuration, the wind direction switching timing is changed according to the elapsed time until the second predetermined temperature difference is reached, so that the wind direction can be switched after the wall or floor has warmed up to some extent, and the air blows out almost directly after the wind direction switching. The temperature of the warm air is less likely to be taken away by the walls and floor, and the feet can be sufficiently warmed without giving the user a feeling of cooling.

  The control includes: a room temperature detection unit that detects a room temperature; an outside air temperature detection unit that detects an outside air temperature; a wind direction plate that changes a wind direction of the blown wind; and a control unit that controls a wind direction of the wind direction plate. The unit includes a timer that counts an elapsed time from when the temperature difference between the set temperature and the indoor temperature reaches the first predetermined temperature difference until reaching a second predetermined temperature difference smaller than the first predetermined temperature difference, and heating operation Sometimes, an interval time until the wind direction plate is changed from the obliquely downward direction to the substantially downward direction is calculated based on the elapsed time and the outside air temperature detected by the outside air temperature detecting means, and the temperature difference is calculated as the second difference. After the predetermined temperature difference is reached, the wind direction plate is inclined downward until the interval time elapses, and the warm air is blown obliquely downward, and when the interval time elapses, the wind direction plate is moved substantially downward. Te, can be controlled to blow warm air in a substantially directly below direction.

  In the above configuration, the elapsed time until the second predetermined temperature is reached and the outside air temperature are used as parameters for estimating the wind direction switching timing. By blowing the wind diagonally downward, it is possible to estimate an interval time that is closer to the time it takes for not only the substantially central region of the room but also the surrounding walls and floor of the room to warm up.

  In addition, the control unit can also adjust the direction of the wind direction plate in a direction substantially directly below. Thereby, it can suppress that the wind which blows off hits an obstacle, and cold-air dimari occurs between an obstacle and a floor. In addition, such adjustment of the direction of the wind direction plate substantially directly below can be easily performed by a remote control device.

  As described above, according to the present invention, until the temperature difference between the set temperature and the room temperature reaches a predetermined temperature at the beginning of the heating operation, the air direction is blown to the substantially central portion of the room, and the temperature difference reaches the predetermined temperature. After that, since it blows out along the floor from the wall, the comfort can be improved even when heating operation is performed for a long time.

  An embodiment of an air conditioner of the present invention will be described based on the drawings.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. 1 is an external view of an indoor unit 1 of a separate type air conditioner, FIG. 2 is a control block diagram of a wind direction plate, FIG. 3A is a side sectional view of the indoor unit with the wind direction plate directed obliquely downward, and FIG. Fig. 4A is a view showing the direction of blowing warm air in the state shown in Fig. 4A, Fig. 4A is a side cross-sectional view of the indoor unit with the wind direction plate directed almost directly down, and Fig. 4B is a view of Fig. 4A. It is a figure which shows the warm air blowing direction in the state.

  The indoor unit 1 is connected to an outdoor unit (not shown) installed outside the room, and is attached to a height of the indoor wall 7 as shown in FIG. The wind direction plate 2-A and the wind direction plate 2-B are rotatably supported around the shaft 9.

  Further, the indoor unit 1 includes a heat exchanger 4 and an indoor fan 5 as a blowing means, and air sucked from the suction port 3 by the indoor fan 5 passes through the heat exchanger 4 and flows from the blowout port 6 to the wind direction plate. It blows out along the direction of 2-A and the wind direction board 2-B. By changing the direction of the wind direction plate 2-A and the wind direction plate 2-B, the direction of the wind blown from the indoor unit can be changed.

  The control part 10 which controls the wind direction of the wind direction board 2-A and the wind direction board 2-B is comprised from the common microcomputer provided with ROM, RAM, and CPU inside. As shown in FIG. 2, on the input side of the control unit, temperature setting means 11 provided in the indoor unit and its remote control device (remote control) to set the room temperature, and the indoor unit and its remote control device (remote control). ) And a wind direction plate driving unit 13 such as a stepping motor for driving the wind direction plate is connected to the output side. The motor shaft of the wind direction plate drive unit 13 is connected to the shafts 9 of the wind direction plates 2-A and 2-B so that the wind direction plate can be rotated.

  Then, during the heating operation, the control unit 10 sets the wind direction to a substantially central position in the room until the temperature difference between the set temperature set by the temperature setting unit 11 and the room temperature detected by the room temperature detection unit 12 reaches a predetermined temperature difference. When the temperature difference reaches a predetermined temperature, the wind direction of the wind direction plate is controlled so that the wind direction is blown from the wall along the floor.

  In the control unit 10 of the present embodiment, during the heating operation, the wind direction plates 2-A and 2-B are moved to the positions shown in FIG. 3A until the temperature difference between the set temperature and the room temperature reaches a predetermined temperature. When the warm air is blown obliquely downward and the temperature difference reaches a predetermined temperature, the wind direction plates 2-A and 2-B are moved to the position shown in FIG. The wind is controlled to blow out substantially downward.

  In the above configuration, when the heating operation is started, after performing various initial operations, the wind direction plate 2-A and the wind direction plate 2-B are moved to the position of FIG. Blow down diagonally. The warm air at this time is blown out as shown in FIG. 3B, and the whole room is warmed.

  FIG. 5 is a control flowchart of the wind direction plate. As shown in the figure, it is checked in S10 whether the temperature difference between the set temperature and the room temperature is equal to or lower than a predetermined temperature (4 ° C. in this embodiment, but not limited to this temperature). If the temperature difference is larger than the predetermined temperature, the directions of the wind direction plate 2-A and the wind direction plate 2-B are maintained obliquely downward as shown in FIG. If the temperature difference is equal to or lower than the predetermined temperature, the direction of the wind direction plate 2-B is changed from the obliquely downward direction to the substantially downward direction as shown in FIG. When the direction of the wind direction plate 2-B is substantially directly below, the warm air is blown out along the wall 7 as shown in FIG. 4B, and further flows along the floor 8 to warm the feet.

  In this way, by warming the entire room quickly first, and then warming the feet, there is no direct hot air hitting the user when heating operation for a long time, and there is no discomfort to the user. Comfort can be improved.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to FIGS. 3 and 4 and FIGS. In the present embodiment, as shown in FIG. 6, the control unit 10 determines that the temperature difference between the set temperature set by the temperature setting unit 11 and the room temperature detected by the room temperature detection unit 12 is a first predetermined temperature difference (for example, 4 ° C) and a timer 14 that counts the elapsed time from reaching the second predetermined temperature difference (for example, 0.67 ° C) smaller than that to the wind direction plate 2-B. An interval time until the direction is changed from the direction to the substantially downward direction is calculated based on the elapsed time, and after the temperature difference reaches the second predetermined temperature difference, until the interval time elapses, the wind direction plate 2-A and 2-B are set obliquely downward, and the warm air is blown obliquely downward. When the interval time has elapsed, the wind direction plate 2-B is set substantially downward and the warm air is blown substantially downward. To control.

  Then, the control unit 10 changes the wind direction plate from the obliquely downward direction to the substantially downward direction from the elapsed time after reaching the first predetermined temperature difference until reaching the second predetermined temperature difference smaller than that. Table A as shown in FIG. 7 is stored in the memory in order to calculate the interval time until. The left column of FIG. 7 shows elapsed time, and the right column shows interval time. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the above configuration, when the heating operation is started, the indoor unit 1 moves the wind direction plate 2-A and the wind direction plate 2-B to the position shown in FIG. To do. The warm air at this time is blown out as shown in FIG. 3B to warm the entire room.

  FIG. 8 is a flowchart of wind direction plate control in this embodiment. In S10, it is checked whether the temperature difference between the set temperature and the room temperature is equal to or less than a first predetermined temperature difference (4 ° C. in the present embodiment). If the temperature difference is larger than the first predetermined temperature difference, the directions of the wind direction plate 2-A and the wind direction plate 2-B are maintained obliquely downward as shown in FIG.

  If the temperature difference is equal to or lower than the first predetermined temperature, it is checked in S20 whether the elapsed time timer 14 is counting. If the elapsed time timer-14 is not counting, the elapsed time timer is counted in S21. Start. In S30, it is checked whether the temperature difference between the set temperature and the room temperature is equal to or lower than a second predetermined temperature (0.67 ° C. in the present embodiment). If the temperature difference is larger than the second predetermined temperature difference, the directions of the wind direction plate 2-A and the wind direction plate 2-B are maintained obliquely downward as shown in FIG. If the temperature difference is equal to or smaller than the second predetermined temperature, the direction of the wind direction plate 2-B is changed from the diagonally downward direction to the substantially downward direction from the table A shown in FIG. 7 based on the count value of the elapsed time timer in S40. Select the interval time until.

  For example, if the count value of the elapsed time timer-14 = 18, that is, if the elapsed time is 18 minutes, 40 minutes is selected as the interval time. In S50, it is checked whether the interval time has elapsed. Until the interval time elapses, the direction of the wind direction plate 2-B is maintained obliquely downward as shown in FIG. 3A, and when the time elapses, the direction of the wind direction plate 2-B is changed as shown in FIG. 4A. Change from diagonally downward to approximately downward.

  When performing the heating operation, even if the room temperature approaches the set temperature, the temperatures of the walls 7 and the floor 8 may not reach the set temperature. Such a problem occurs when the wall 7 or the floor 8 is cold in winter. Therefore, even if the room temperature approaches the set temperature, the direction of the wind direction plate 2-B is immediately made to be almost directly below, and the warm air is blown out along the wall 7 as shown in FIG. Even if it flows, the temperature of the warm air is lost to the walls 7 and the floor 8, and the feet cannot be sufficiently warmed up, which may give the user a feeling of cooling. The time required for the room temperature to reach the second predetermined temperature difference from the first predetermined temperature difference differs depending on how the walls 7 and the floor 8 are cooled.

  Therefore, by measuring the elapsed time until the room temperature reaches the second predetermined temperature difference from the first predetermined temperature difference, the wall 7 and the floor 8 are heated after the indoor temperature reaches the second predetermined temperature difference. Guess the interval time.

  As described above, after the indoor temperature reaches the second predetermined temperature difference, the temperature of the blown hot air is changed to the wall 7 or the floor 8 by changing the direction of the wind direction plate to substantially right after the interval time has elapsed. It becomes difficult to be taken away and the feet can be sufficiently warmed without giving the user a feeling of cooling.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to FIGS. 2 and 3 and FIGS. In the present embodiment, as shown in FIG. 9, the control unit 10 determines that the temperature difference between the set temperature set by the temperature setting unit 11 and the room temperature detected by the room temperature detection unit 12 is a first predetermined temperature difference (for example, 4C) and a timer 14 that counts the elapsed time from reaching the second predetermined temperature difference (for example, 0.67 ° C) smaller than that to the wind direction plate 2-B. An interval time until it is changed from a downward direction to a substantially downward direction is calculated based on the elapsed time and, for example, an outside air temperature detected by an outside air temperature detecting means 15 (thermistor) provided in an outdoor unit, and the temperature difference is calculated. After the second predetermined temperature difference is reached, until the interval time elapses, the wind direction plates 2-A and 2-B are set obliquely downward, hot air is blown obliquely downward, and the interval time is reached. Elapse The wind direction plate 2-B in the substantially directly below direction is controlled to blow warm air in a substantially directly below direction.

  Then, the control unit 10 changes the wind direction plate from the obliquely downward direction to the substantially downward direction from the elapsed time after reaching the first predetermined temperature difference until reaching the second predetermined temperature difference smaller than that. Table B as shown in FIG. 10 is stored in the memory in order to calculate the interval time until. The elapsed time is shown outside the left column of FIG. 10, the outside temperature is shown outside the bottom column, and the interval time is shown in the column surrounded by ruled lines. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the above configuration, when the indoor unit 1 starts the heating operation, after performing various initial operations, the indoor unit 1 moves the wind direction plate 2-A and the wind direction plate 2-B to the position shown in FIG. To. The warm air at this time is blown out as shown in FIG. 3B to warm the entire room.

  FIG. 11 is a flowchart of wind direction plate control in the present embodiment. In S10, it is checked whether the temperature difference between the set temperature and the room temperature is equal to or less than a first predetermined temperature difference (4 ° C. in the present embodiment). If the temperature difference is larger than the first predetermined temperature difference, the directions of the wind direction plate 2-A and the wind direction plate 2-B are maintained obliquely downward as shown in FIG. If the temperature difference is not more than the first predetermined temperature difference, it is checked in S20 whether the elapsed time timer-14 is counting. If the elapsed time timer-14 is not counting, the elapsed time timer 14 is checked in S21. Start counting.

  In S30, it is checked whether the temperature difference between the set temperature and the room temperature is equal to or smaller than a second predetermined temperature difference (0.67 ° C. in the present embodiment). If the temperature difference is larger than the second predetermined temperature difference, the directions of the wind direction plate 2-A and the wind direction plate 2-B are maintained obliquely downward as shown in FIG. If the temperature difference is less than or equal to the second predetermined temperature difference, the outside air temperature detecting means 15 confirms the outside air temperature in S40.

  In S50, based on the count value of the elapsed time timer -14 and the outside air temperature, an interval time until the direction of the wind direction plate 2-B from the table B is changed from obliquely downward to substantially directly downward is selected. For example, if the count value of the elapsed time timer-14 = 18 (elapsed time is 18 minutes) and the outside air temperature = 7 ° C., the interval time is selected as 35 minutes. In S60, it is checked whether the interval time has elapsed. Until the interval time elapses, the direction of the wind direction plate 2-B is maintained obliquely downward as shown in FIG. 3A, and when the time elapses, the direction of the wind direction plate 2-B is changed as shown in FIG. 4A. Change from diagonally downward to approximately downward.

  In the present embodiment, after the room temperature reaches the second predetermined temperature difference based on the elapsed time until the room temperature reaches the second predetermined temperature difference from the first predetermined temperature difference and the outside air temperature, the wall 7 or The interval time until the floor 8 is warmed is estimated.

  Thus, by using both parameters of elapsed time and outside air temperature, it becomes possible to estimate an interval time closer to the time it takes for the wall 7 and the floor 8 to warm up, giving the user a cool feeling. The effect of sufficiently warming the feet is improved.

<Fourth Embodiment>
A fourth embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a side sectional view of the vicinity of the outlet of the indoor unit 1. FIG. 13 is a front view of a remote control device 16 for remotely controlling the indoor unit 1.

  The remote control device 16 is provided with a large number of various buttons for operating the indoor unit 1 to perform various functions. Among these buttons, there are up and down wind direction buttons 17 for operating the direction of the wind direction plate. Each time the up / down wind direction button 17 is pressed, the positions of the wind direction plate 2-A and the wind direction plate 2-B can be changed. It can be changed to “directly downward”.

  By using the up / down wind direction button 17, the position of the wind direction plate 2-B in the downward direction can be adjusted. In the present embodiment, the position of the wind direction plate 2-B in the downward direction can be adjusted among the three positions (a), (b), and (c) as shown in FIG. If necessary, there may be four stages or any number of stages.

  The control unit 10 that adjusts the direction directly below the wind direction plate 2-B inputs a signal from the wind direction button 17 of the remote control device (remote control) and controls the wind direction plate driving unit 13, and directly below the wind direction plate 2-B. The direction of the direction can be adjusted.

  FIG. 14 is a flowchart for adjusting the position of the wind direction plate 2-B in the downward direction. The indoor unit 1 confirms whether the up / down wind direction button 17 has been continuously pressed for 5 seconds or more in S10. If the button is not kept pressed, this flow is terminated without doing anything. If the button is kept pressed, the process proceeds to S20, and it is checked whether or not the current position of the wind direction plate 2-B is the position shown in FIG. If it is the position of (a), the position of the wind direction board 2-B will be changed to (c) in S30. If it is not the position of (a), it is checked in S40 whether the current position of the wind direction plate 2-B is the position of (b) of FIG. If it is the position of (b), the position of the wind direction board 2-B will be changed to (a) in S50. If it is not the position of (b), since the current position of the wind direction plate 2-B is (c), the position of the wind direction plate 2-B is changed to (b).

  Usually, the wind direction board 2-B exists in the position of (c) in the figure. At this time, when there is some obstacle 18 (for example, furniture, television, etc.) near the interior unit 1, the warm air blown out from the interior unit 1 flows almost as shown in FIG. Cold air damage 19 may occur between the obstacle 18 and the floor 8. When the user goes to the vicinity of such a cold air dome 19, the user feels cold and may get uncomfortable.

  In such a case, by adjusting the position of the wind direction plate 2-B directly downward as described above, the hot air is blown out avoiding the obstacle 18 as shown in FIG. Can be prevented.

  Further, by using the remote control device 16, even if there is an obstacle, the position in the direction directly below the wind direction plate 2-B can be easily adjusted, and even if the room is redesigned, the state of the obstacle at that time is restored. It can be adjusted and convenient.

  In each of the above embodiments, there are two wind direction plates, and there is only one wind direction plate that faces substantially downward. However, the number of wind direction plates may be any number, and any number of wind direction plates that are directed substantially downward. It may be a sheet. Furthermore, the air conditioner itself is not limited to the wall-mounted type, and may be a ceiling-suspended type air conditioner, a built-in type type, or the like as long as the air conditioner is installed at a high place.

  Further, the above embodiment is merely an example, and a specific configuration of the indoor unit, a flowchart procedure, an interval time setting unit, a first predetermined temperature difference, a second predetermined temperature difference, and the like are also limited to the present embodiment. Needless to say, the present invention is not limited to the above and may be changed as appropriate within the scope of the present invention.

Indoor unit external view in the separate type air conditioner showing the first embodiment of the present invention Control block diagram of wind direction plate (A) is side surface sectional drawing of the indoor unit which orient | assigned the wind direction board to diagonally downward, (b) is a figure which shows the warm air blowing direction in the state of the same figure (a) (A) is side surface sectional drawing of the indoor unit which turned the wind direction board substantially right below, (b) is a figure which shows the warm air blowing direction in the state of the same figure (a) Flow chart of wind direction plate control in the first embodiment Control block diagram of wind direction plate showing the second embodiment of the present invention Table showing the relationship between elapsed time and interval time stored in the memory of the control unit Flow chart of wind direction plate control in the second embodiment Control block diagram of wind direction plate showing the third embodiment of the present invention Table showing the relationship between elapsed time and interval time stored in the memory of the control unit Flow chart of wind direction plate control in the third embodiment Side surface sectional drawing of the blower outlet vicinity of the indoor unit which shows the 4th Embodiment of this invention Front view of a remote control device (remote control) showing a fourth embodiment of the present invention Flow chart of wind direction plate control showing the fourth embodiment Flow diagram of warm air when there is an obstacle directly under the indoor unit in the fourth embodiment Flow diagram of hot air when the blowout direction is changed when there is an obstacle directly under the fourth embodiment The figure which shows the blowing direction of a warm air when changing the direction of the wind direction board in 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 2-A Wind direction board 2-B Wind direction board 3 Suction inlet 4 Heat exchanger 5 Indoor fan 6 Outlet 7 Wall 8 Floor 10 Control part 11 Temperature setting means 12 Room temperature detection means 13 Wind direction board drive part 14 Timer 15 Outside Air temperature detection means 16 Remote control device 17 Up / down air direction button 18 Obstacle 19 Cold air damage

Claims (6)

Room temperature detecting means for detecting the room temperature, a wind direction plate for changing the direction of the blown wind, and a control unit for controlling the wind direction of the wind direction plate, wherein the control unit is configured to set the temperature and the room temperature during heating operation. Until the temperature difference reaches a predetermined temperature difference, the wind direction is blown out to a substantially central portion of the room, and when the temperature difference reaches a predetermined temperature, the wind direction of the wind direction plate is blown out from the wall along the floor. An air conditioner characterized by controlling the air conditioner. Room temperature detecting means for detecting the room temperature, a wind direction plate for changing the direction of the blown wind, and a control unit for controlling the wind direction of the wind direction plate, wherein the control unit is configured to set the temperature and the room temperature during heating operation. Until the temperature difference reaches a predetermined temperature difference, the wind direction plate is inclined downward and the warm air is blown diagonally downward. When the temperature difference reaches the predetermined temperature, the wind direction plate is set substantially downward. An air conditioner that is controlled so as to blow warm air substantially downward. Room temperature detecting means for detecting the room temperature, a wind direction plate for changing the wind direction of the blown wind, and a control unit for controlling the wind direction of the wind direction plate,
The control unit includes a timer that counts an elapsed time from when the temperature difference between the set temperature and the room temperature reaches the first predetermined temperature difference until reaching a second predetermined temperature difference smaller than that, During the heating operation, an interval time until the wind direction plate is changed from obliquely downward to substantially directly downward is calculated based on the elapsed time, and after the temperature difference reaches the second predetermined temperature difference, the interval Until the time elapses, the wind direction plate is inclined downward and the warm air is blown obliquely downward, and when the interval time has elapsed, the wind direction plate is substantially directed downward and the warm air is blown substantially downward. An air conditioner characterized by being controlled. Room temperature detecting means for detecting the room temperature, outside air temperature detecting means for detecting the outside air temperature, a wind direction plate for changing the wind direction of the blown wind, and a control unit for controlling the wind direction of the wind direction plate,
The control unit includes a timer that counts an elapsed time from when the temperature difference between the set temperature and the room temperature reaches the first predetermined temperature difference until reaching a second predetermined temperature difference smaller than that, During heating operation, an interval time until the wind direction plate is changed from obliquely downward to substantially downward is calculated based on the elapsed time and the outside air temperature detected by the outside air temperature detecting means, and the temperature difference is After reaching the predetermined temperature difference of 2, until the interval time elapses, the wind direction plate is inclined obliquely downward, the warm air is blown obliquely downward, and when the interval time elapses, the wind direction plate is substantially directed downward. The air conditioner is characterized in that the hot air is controlled to blow out substantially downward. The air conditioner according to any one of claims 1 to 4, wherein the control unit is capable of adjusting a direction in a direction substantially directly below the wind direction plate. The air conditioner according to claim 5, wherein the control unit is capable of adjusting a direction of a wind direction plate substantially directly below by a signal from a remote operation control device.

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