JP2009014313A5 - - Google Patents

Claims (3)

冷凍サイクルの蒸発器(９)から発生する冷気を庫内に送る庫内ファン(１１)と、庫内温度(Ｔ)を検知する庫内温度センサ(１２)と、前記庫内温度センサ(１２)の検知信号に基づいて前記庫内ファン(１１)の回転数と前記冷凍サイクルの運転を制御する制御回路(２０)を備え、前記冷凍サイクルの運転中に、前記制御回路(２０)は、前記庫内ファン(１１)を予め定めた設定回転数で回転させて、前記庫内温度(Ｔ)を設定温度(Ｔｓ)に維持する冷蔵庫において、
前記蒸発器(９)の温度(Ｔｊ)を検知する蒸発器温度センサを備え、前記制御回路(２０)は、前記庫内温度センサによって検知される庫内温度(Ｔ)と、前記蒸発器温度センサによって検知される蒸発器温度(Ｔｊ)に応じて、前記庫内ファン(１１)の回転数を調節し、前記庫内ファン(１１)の回転数を調節することによって、前記冷凍サイクルの蒸発器(９)での庫内空気の熱交換量を調節して、前記冷凍サイクルの圧縮機(６)の負荷を軽減するようにしたことを特徴とする冷蔵庫。 An internal fan (11) for sending cool air generated from the evaporator (9) of the refrigeration cycle to the internal chamber, an internal temperature sensor (12) for detecting the internal temperature (T), and the internal temperature sensor (12 ) Based on the detection signal, the control circuit (20) for controlling the rotation speed of the internal fan (11) and the operation of the refrigeration cycle, and during the operation of the refrigeration cycle, the control circuit (20) In the refrigerator that rotates the internal fan (11) at a preset rotational speed to maintain the internal temperature (T) at the set temperature (Ts),
An evaporator temperature sensor for detecting the temperature (Tj) of the evaporator (9) is provided, and the control circuit (20) includes an internal temperature (T) detected by the internal temperature sensor, and the evaporator temperature. In accordance with the evaporator temperature (Tj) detected by the sensor, the rotation speed of the internal fan (11) is adjusted, and the rotation speed of the internal fan (11) is adjusted to evaporate the refrigeration cycle. bowl by adjusting the amount of heat exchange air inside in (9), a refrigerator, characterized in that so as to reduce the load of the compressor of the refrigeration cycle (6). 前記制御回路(２０)は、前記庫内温度(Ｔ)が前記設定温度(Ｔｓ)よりも所定温度高い規定値(Ｔｋ)以下、または前記蒸発器温度(Ｔｊ)が予め設定したしきい値(Ｔｂ)以下と判断した場合、前記庫内ファン(１１)を前記設定回転数で回転させ、
一方、前記庫内温度(Ｔ)が規定値(Ｔｋ)より高く、かつ蒸発器温度(Ｔｊ)がしきい値(Ｔｂ)よりも高いと判断した場合、庫内ファン(１１)を前記設定回転数よりも低い回転数で回転させ、
前記庫内ファン(１１)を前記設定回転数よりも低い回転数で回転させた場合、前記冷凍サイクルの起動開始から所定時間経過したかを判断し、経過していなければ、前記庫内温度(Ｔ)が前記規定値以下、または前記蒸発器温度(Ｔｊ)が前記しきい値（Ｔｂ）以下かの判断に戻り、その判断を繰り返し、一方、所定時間経過していれば庫内ファン(１１)を前記設定回転数で回転させるようにしたことを特徴とする請求項１に記載の冷蔵庫。 The control circuit (20) is configured such that the internal temperature (T) is equal to or lower than a specified value (Tk) higher than the set temperature (Ts) by a predetermined temperature, or the evaporator temperature (Tj) is a preset threshold ( Tb) If it is determined that it is less than or equal to, the internal fan (11) is rotated at the set rotational speed,
On the other hand, when it is determined that the internal temperature (T) is higher than the specified value (Tk) and the evaporator temperature (Tj) is higher than the threshold value (Tb), the internal fan (11) is set to the set rotation. Rotate at a lower speed than the number,
When the internal fan (11) is rotated at a rotational speed lower than the set rotational speed , it is determined whether a predetermined time has elapsed from the start of the start of the refrigeration cycle, and if not, the internal temperature ( T) is less than the specified value, or the evaporator temperature (Tj) at the back to determine whether the threshold (Tb) below, to repeat the determination while the internal fan if the predetermined time has passed The refrigerator according to claim 1 , wherein (11) is rotated at the set rotation speed . 前記制御回路(２０)は、前記設定温度(Ｔｓ)よりも所定温度高い規定値(Ｔｋ)以下の温度範囲を複数の温度グループに区分し、前記庫内ファン(１１)の前記設定回転数を、前記温度グループのそれぞれに対応させて設定し、前記庫内温度センサ(１２)の検知する庫内温度(Ｔ)の属する前記温度グループの設定回転数となるように前記庫内ファン(１１)を制御することを特徴とする請求項１または２に記載の冷蔵庫。 The control circuit (20) divides a temperature range below a specified value (Tk) that is a predetermined temperature higher than the set temperature (Ts) into a plurality of temperature groups, and sets the set rotational speed of the internal fan (11). The internal fan (11) is set so as to correspond to each of the temperature groups and is set to the set rotational speed of the temperature group to which the internal temperature (T) detected by the internal temperature sensor (12) belongs. the refrigerator according to claim 1 or 2, characterized in that to control.