JPS6389563U

JPS6389563U -

Info

Publication number: JPS6389563U
Application number: JP18598986U
Authority: JP
Priority date: 1986-12-02
Filing date: 1986-12-02
Publication date: 1988-06-10

Description

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

第１図乃至第３図は本考案の一実施例を示し、
第１図は冷凍サイクルを示す図、第２図は空気調
和機の暖房運転時の状態を示すブロツク図、第３
図は暖房運転時の動作を示すフロチヤート、第４
図は従来の冷凍サイクルを示す図、第５図は従来
の空気調和機の暖房運転時のフローチヤートであ
る。２１……圧縮機、２２……四方切換弁、２３…
…室外側熱交換器、２４……電子式膨張弁、２５
……室内側熱交換器、２６……開閉弁、２７……
サーミスタ、４１……室外側熱交換器温度検出手
段、４２……第１の除霜運転開始設定温度、４３
……第２の除霜運転開始設定温度、４４，４５…
…温度比較手段、４６……第１の除霜又は第２の
除霜運転判定手段、４７……第１の除霜又は第２
の除霜運転開始指令手段。 1 to 3 show an embodiment of the present invention,
Figure 1 is a diagram showing the refrigeration cycle, Figure 2 is a block diagram showing the state of the air conditioner during heating operation, and Figure 3 is a diagram showing the refrigeration cycle.
The figure is a flowchart showing the operation during heating operation, No. 4.
The figure shows a conventional refrigeration cycle, and FIG. 5 is a flowchart during heating operation of a conventional air conditioner. 21... Compressor, 22... Four-way switching valve, 23...
...Outdoor heat exchanger, 24...Electronic expansion valve, 25
...Indoor heat exchanger, 26...Opening/closing valve, 27...
Thermistor, 41...Outdoor heat exchanger temperature detection means, 42...First defrosting operation start temperature setting, 43
...Second defrosting operation start temperature setting, 44, 45...
...Temperature comparison means, 46...First defrosting or second defrosting operation determining means, 47...First defrosting or second defrosting operation
means for commanding the start of defrosting operation.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

空気調和機の冷凍サイクルにおいて、暖房運転
時の室外側熱交換器の温度を検出する温度検出手
段と、この温度検出手段の検出温度と第１の除霜
運転開始設定温度とを比較し、第１の除霜運転を
行う第１の除霜手段と、前記温度検出手段の検出
温度と前記第１の除霜運転開始設定温度より低い
第２の除霜運転開始設定温度とを比較し、第２の
除霜運転を行う第２の除霜手段とを具備したこと
を特徴とする空気調和機の除霜装置。 In the refrigeration cycle of the air conditioner, a temperature detection means for detecting the temperature of the outdoor heat exchanger during heating operation compares the detected temperature of this temperature detection means with a first defrosting operation start temperature, and A first defrosting means that performs a first defrosting operation compares the detected temperature of the temperature detecting means with a second defrosting operation start set temperature lower than the first defrosting operation start set temperature, 1. A defrosting device for an air conditioner, comprising: a second defrosting means for performing a second defrosting operation.