JPS6166749U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は冷凍
サイクルの構成図、第２図は制御回路の構成図、
第３図は温度センサの特性図、第４図ａ乃至ｃは
タイムチヤートである。 図面中、１は冷凍サイクル、２はコンプレツサ
、２ａは駆動モータ、３はコンデンサ、４は主キ
ヤピラリチユーブ、５は第１の冷却器、６は補助
キヤピラリチユーブ、７は電磁弁、８は補助キヤ
ピラリチユーブ、９は第２の冷却器、１０は制御
回路、１１は温度センサ、１９及び２４はタイマ
ー、３０は除霜ヒータを示す。 The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram of a refrigeration cycle, Fig. 2 is a block diagram of a control circuit,
FIG. 3 is a characteristic diagram of the temperature sensor, and FIGS. 4 a to 4 c are time charts. In the drawing, 1 is a refrigeration cycle, 2 is a compressor, 2a is a drive motor, 3 is a condenser, 4 is a main capillary tube, 5 is a first cooler, 6 is an auxiliary capillary tube, 7 is a solenoid valve, and 8 is a Auxiliary capillary tube, 9 is a second cooler, 10 is a control circuit, 11 is a temperature sensor, 19 and 24 are timers, and 30 is a defrosting heater.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 冷凍室内に配設された第１の冷却器及びこの第
１の冷却器より低温度に冷却されて前記冷凍室内
に冷気を循環させる第２の冷却器にコンプレツサ
からの冷媒を順次供給するようにした冷凍サイク
ルにおいて、前記第１及び第２の冷却器間に電磁
弁を設け、前記コンプレツサの運転及び停止に応
じて前記電磁弁を開放及び閉塞させ前記第２の冷
却器の除霜のための除霜信号が与えられた時には
前記電磁弁を閉塞させるとともにその後所定時間
だけ前記コンプレツサを継続運転させる制御回路
を設けたことを特徴とする冷凍サイクルの運転装
置。 The refrigerant from the compressor is sequentially supplied to a first cooler disposed in the freezer compartment and a second cooler that is cooled to a lower temperature than the first cooler and circulates cold air into the freezer compartment. In the refrigeration cycle, a solenoid valve is provided between the first and second coolers, and the solenoid valves are opened and closed according to operation and stop of the compressor to defrost the second cooler. A refrigeration cycle operating device comprising a control circuit that closes the electromagnetic valve when a defrosting signal is applied and then continues to operate the compressor for a predetermined period of time.