JP2005090873A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent cold air from hitting against a body directly regardless of the intention of a user by preventing the dew condensation of a wind blowout opening at the indoor side of an air conditioner and maintaining a wind direction set by a user as long as possible. <P>SOLUTION: In the air conditioner, having a remote controller 11, an indoor air suction temperature sensor 7, an outdoor air suction temperature sensor 8, an indoor blowing fan, and an indoor wind direction control blade 4, dew condensation prevention control is made when the suction air temperature at the outdoor side reaches a specified value or lower and an indoor blowing fan speed continues to be at a specified speed or lower for a specified period of time, an indoor side load is calculated, by using the setting temperature of the remote controller, and the angle of the indoor wind direction control blade 4 is changed for maintaining the blade angle set by the user as long as possible when the indoor side load reaches a specified value or higher, thus preventing the wind direction control blade from facing the user and preventing direct wind from hitting and hence improving comfort. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner equipped with dew prevention control.

  FIG. 5 is a block diagram showing a configuration of a conventional air conditioner.

  As shown in FIG. 5, the conventional air conditioner includes a control device 5, an indoor fan 6, an indoor wind direction control blade 4, an indoor suction temperature sensor 7, an outdoor suction temperature sensor 8, a compressor 9, and a remote control receiver. The control device 5 controls the blower motor and each actuator (not shown) for driving the wind direction control blades based on the data received from the remote controller 11 and the information from the suction temperature sensors 7 and 8.

FIG. 6 is a control timing chart of a conventional air conditioner.
Conventionally, the dew prevention control mounted on the air conditioner is used when the dew condition is satisfied, that is, when the outdoor suction temperature sensor detects that the temperature is below a predetermined temperature and the indoor fan speed is continuously below a predetermined value for a certain period of time. In this case, the wind direction control blade is fixed at a predetermined position, and the wind direction control blade is sufficiently encased in the main flow of the blowing air, and the flow of the wind is controlled so as not to be separated from the surface of the wind direction control blade. . For example, when the dew control is performed in a state where the wind direction control blade is set to the upper limit angle, that is, the upward direction, the direction of the wind direction control blade has been changed to a downward direction (see, for example, Patent Document 1).
JP-A-11-230599

  However, in the above-described conventional configuration, when the dew condition is satisfied and continues for a certain time, the dew prevention control is performed regardless of the room temperature. Even when the room temperature is low and condensation is unlikely to occur, the wind direction control blade angle of the indoor unit is fixed to a predetermined value regardless of the user's intention. In spite of the setting, it was directly hit by cold air, causing discomfort.

  In addition, physically weak persons such as elderly people, infants, and sick persons have a problem that their body temperature is deprived by direct cold wind, leading to a decrease in physical strength.

  The present invention solves such a conventional problem, and prevents condensation at the air outlet and maintains the wind direction set by the user for as long as possible, so that the cold wind is directly applied to the body regardless of the user's intention. An object of the present invention is to provide a control device for an air conditioner that is prevented from hitting the air conditioner.

In order to solve the above-described problems, the present invention provides a remote controller for determining a set temperature, an indoor air suction temperature sensor for detecting an indoor intake air temperature, an outdoor air intake temperature sensor for detecting an outdoor intake air temperature, When there is a blower fan and a wind direction control blade for controlling the wind direction at the indoor outlet, the outdoor intake air temperature is below a predetermined value, and the indoor blower fan speed is kept below a predetermined number of revolutions for a predetermined time An air conditioner that performs dew prevention control, calculates an indoor load based on a remote control set temperature, and changes an angle of an air flow control blade on the indoor side when the indoor load becomes a predetermined value or more. With this configuration, the blade angle set by the user is maintained as long as possible, and the chance that the wind direction control blades face the user and the wind directly hits them as much as possible. It is possible to improve.

  As described above, according to the air conditioner of the present invention, under the condition where the room temperature is high and condensation is likely to occur, dew prevention control is performed in a short time after the dew condition is established, and the room temperature is low and condensation occurs. In difficult conditions, by performing dew prevention control for a long time after the dew condition is established, cold wind will be applied even if the wind direction is set at a position to avoid direct wind, and physical conditions such as elderly people, infants, sick people, etc. In the weak, there is an effect of eliminating the fact that the body temperature is deprived by cold air and the physical strength is reduced.

  Further, the present invention divides the indoor load into three regions, a high load region, a medium load region, and a low load region, and when the calculated indoor load enters the medium load region, the angle of the wind direction control blade is set. When the first blade angle is set and the indoor load enters the high load region, the angle of the wind direction control blade is set to the second blade angle. According to this configuration, the room temperature is high. In conditions where condensation is likely to occur, the angle of the wind direction control blade is set to the blade angle that is most effective in preventing condensation, and in conditions where the room temperature is low and condensation is unlikely to occur, the angle of the wind direction control blade is set higher than above. By setting the blade angle, the cold wind will be applied even if the wind direction is set at a position that avoids the direct wind, and the body temperature will be taken away by cold wind in the physically weak, such as the elderly, infants, and the sick. Cause a drop in physical fitness An effect that eliminates the like.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view of an air conditioner according to Embodiment 1 of the present invention.

  In FIG. 1, the indoor unit 1 has an indoor air intake port 2 and a blowout port 3. Further, a blower fan (not shown) is built in the indoor unit 1, and the indoor air sucked from the indoor air intake port 2 is blown out from the blowout port 3. At this time, the wind direction of the blown air is arbitrarily controlled by the wind direction control blade 4 provided in the blowout port 3.

  FIG. 2 is a control flowchart of the air conditioner according to Embodiment 1 of the present invention.

As shown in FIG. 2, the operation starts from the start, and when it is detected in step 1 that the outdoor temperature sensor of the outdoor unit is less than 30 ° C., the process proceeds to step 2, and the speed of the indoor fan motor is less than or equal to Lo. When the determination is made, the process proceeds to step 3, and when the remote control set temperature is detected to be Ta or higher, the process proceeds to step 4 to determine whether or not the remote control set temperature is Tb or higher. Then, after 20 minutes from the timer countdown, the routine proceeds to step 7 where the wind direction control blade is changed to the position for the dew prevention control. When Ta or more and less than Tb is detected, the process proceeds to Step 6 and the timer counts down. After 40 minutes from the timer countdown, the process proceeds to Step 7 and the wind direction control blade is changed to the position for the dew prevention control.
Moreover, if this control is made into a timing chart, it will be expressed as shown in FIG.

  Next, a load calculation method in the present invention will be described. FIG. 4 is a load characteristic diagram of the air conditioner according to Embodiment 1 of the present invention.

  As shown in the figure, the remote controller set temperature is detected, and the detected value is less than T1 ° C. as a low load region, T1 ° C. or more and less than T2 ° C. as a medium load region, and T2 ° C. or more as a high load region.

  When the load enters the middle load region, the angle of the wind direction control blade is set as the first blade angle, and when the load enters the large load region, the angle of the wind direction control blade is set as the second blade angle.

  By making the above configuration, the blade angle set by the user can be maintained as long as possible, the wind direction control blade can be directed toward the user, and the chance of direct wind hit can be minimized, and comfort can be improved. .

  In addition, although Embodiment 1 of this invention demonstrated the separation-type air conditioner, it cannot be overemphasized that it can apply also to an integrated air conditioner.

  As described above, the air conditioner of the present invention can prevent the user from being directly exposed to cold air, so that the air conditioner is not limited to a wall-mounted air conditioner for home use, but can be used for an embedded type, an office, It can also be used for packaged air conditioners in factories and the like.

The perspective view of the air conditioner in Embodiment 1 of this invention Control flow chart of air conditioner in Embodiment 1 of the present invention Control timing chart of air conditioner in Embodiment 1 of the present invention The load characteristic figure of the air conditioner in Embodiment 1 of this invention Configuration diagram of conventional air conditioner Control timing chart for conventional air conditioner dew control

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Indoor side air inlet 3 Indoor side air outlet 4 Indoor side air direction control blade 5 Control apparatus 6 Indoor fan 7 Indoor side intake temperature sensor 8 Outdoor side intake temperature sensor 9 Compressor 10 Remote control receiving part 11 Remote control

Claims (2)

A remote controller that determines the set temperature, an indoor air intake temperature sensor that detects the indoor intake air temperature, an outdoor air intake temperature sensor that detects the outdoor intake air temperature, the indoor fan, and the air direction to the indoor outlet An air conditioner that has a wind direction control blade to control, performs dew prevention control when the outdoor intake air temperature becomes a predetermined value or less and the indoor fan speed continues for a predetermined time at a predetermined rotation speed or less. An air conditioner characterized in that an indoor load is calculated based on a remote control set temperature, and when the indoor load becomes a predetermined value or more, an angle of a wind direction control blade on the indoor side is changed. When the indoor load is divided into three regions, a high load region, a medium load region, and a low load region, and the calculated indoor load enters the medium load region, the angle of the wind direction control blade is set to the first blade angle. The air conditioner according to claim 1, wherein the air conditioner is set and the angle of the wind direction control blade is set to the second blade angle when the indoor load enters the high load region.

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