JP2015135199A5

JP2015135199A5 -

Info

Publication number: JP2015135199A5
Application number: JP2014006133A
Authority: JP
Filing date: 2014-01-16
Publication date: 2016-09-29
Anticipated expiration: 2034-01-16

Description

本発明に係る換気装置は、室外給気口から熱交換器を介して室内給気口に通じる給気風路と、室内排気口から熱交換器を介して室外排気口に通じる排気風路と、給気風路内に設けられ、室外空気を室外給気口から吸引し、熱交換器を介して室内給気口から室内に給気する給気送風機と、排気風路内に設けられ、室内空気を室内排気口から吸引し、熱交換器を介して室外排気口から室外へ排気する排気送風機と、給気風路内に流れる室外空気から室外温度を検出する室外温度センサーと、給気送風機および排気送風機を制御し、室外温度センサーにより検出された室外温度に応じて、給気送風機の回転数と排気送風機の回転数との差が変わるように、給気送風機および排気送風機の何れか一方の回転数を制御する換気風量制御部とを備えたものである。 The ventilator according to the present invention includes a supply air passage that leads from the outdoor air supply port to the indoor air supply port via the heat exchanger, an exhaust air passage that leads from the indoor exhaust port to the outdoor exhaust port via the heat exchanger, An air supply fan provided in the supply air passage, sucking outdoor air from the outdoor air supply port, and supplying the air from the indoor air supply port to the room through a heat exchanger, and an indoor air provided in the exhaust air passage An exhaust fan that sucks air from the indoor exhaust port and exhausts it from the outdoor exhaust port to the outside through a heat exchanger, an outdoor temperature sensor that detects outdoor temperature from the outdoor air flowing in the supply air passage, an air supply fan, and an exhaust controls blower, depending on the outdoor temperature detected by the chamber outside temperature sensor, such that the difference between the rotational speed of the rotational speed of the air supply fan and the exhaust fan is changed, the air supply blower and exhaust blower one of the Equipped with a ventilation air volume control unit to control the rotation speed A.

Ｔ１≧Ｔｏａ＞Ｔ２のときは、図４に示すように、Ｔｏａ＞Ｔ１のときを最大風量１００％、Ｔ２≧Ｔｏａのときの風量をＢ％として、Ｔ１≧Ｔｏａ＞Ｔ２の間は室外温度Ｔｏａと風量の関係が一次関数となるように給気送風機４の風量を制御する。
具体的には、図４の関係を満たすように、換気風量制御部１１により、室外温度Ｔｏａから風量を算出しても良いし、適当な分解能例えば室外温度０．１℃刻み毎の風量をテーブルとして制御回路１０内に用意し、テーブルを参照することによって風量を求めて、給気送風機４を制御するようにしても良い。室外温度Ｔｏａが低下すると徐々に風量が制限され、給気による排気の冷却が抑えられて結露が抑制される。また、排気送風機７は運転を続けるため、熱交換器２が排気によって温められ凍結が防止される（第１の風量制御運転）。 When T1 ≧ Toa> T2, as shown in FIG. 4 , the maximum air volume is 100% when Toa> T1, the air volume when T2 ≧ Toa is B%, and the outdoor temperature Toa during T1 ≧ Toa> T2. The air volume of the air supply blower 4 is controlled so that the relationship between the air volume and the air volume becomes a linear function.
Specifically, to satisfy the relationship of FIG. 4, the ventilation power control unit 11, may be calculated air volume from the outdoor temperature Toa, table the air volume of an appropriate resolution for example outdoor temperature 0.1 ° C. per increment The air supply fan 4 may be controlled by preparing in the control circuit 10 and obtaining the air volume by referring to the table. When the outdoor temperature Toa is lowered, the air volume is gradually limited, and cooling of the exhaust gas by the supply air is suppressed to suppress dew condensation. Further, since the exhaust blower 7 continues to operate, the heat exchanger 2 is warmed by the exhaust to prevent freezing (first air volume control operation).

Claims

An air supply air passage that leads from the outdoor air supply port to the indoor air supply port via the heat exchanger;
An exhaust air passage leading from the indoor exhaust port to the outdoor exhaust port via the heat exchanger;
An air supply blower that is provided in the air supply air passage, sucks outdoor air from the outdoor air supply port, and supplies the indoor air from the indoor air supply port via the heat exchanger;
An exhaust blower that is provided in the exhaust air passage, sucks indoor air from the indoor exhaust port, and exhausts the air from the outdoor exhaust port to the outside through the heat exchanger;
An outdoor temperature sensor for detecting an outdoor temperature from outdoor air flowing in the supply air passage;
Controls the air supply fan and the exhaust fan, before SL depending on the outdoor temperature detected by the outdoor temperature sensor, such that the difference between the rotational speed of the exhaust blower and the rotational speed of the air supply fan is changed, the A ventilation apparatus comprising a ventilation air volume control unit that controls the rotational speed of any one of an air supply blower and the exhaust blower.