JPS58103670U - air conditioner - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の冷凍サイクルを示す回路図、第２図は第
１図に示す冷凍サイクルの制御回路図、第３図は本考案
の第１実施例を示す冷凍サイクルの回路図、第４図は第
３図に委す冷凍サイクルの制御回路図、第５図は本考案
の第２実施例を示す回路図、第６図は低温時の起動特性
を示すグラフ、第７図は馬力当りの必要冷媒量と設備容
量とを示すグラブである。 １・・・・・・圧縮機、２・・曲凝縮器、３・・曲絞り
機構、４・・・・・・蒸発器、２１．２２・・・・・・
電磁弁、２３・・曲バイパス回路。FIG. 1 is a circuit diagram showing a conventional refrigeration cycle, FIG. 2 is a control circuit diagram of the refrigeration cycle shown in FIG. 1, FIG. 3 is a circuit diagram of a refrigeration cycle showing the first embodiment of the present invention, and FIG. The figure is a control circuit diagram of the refrigeration cycle shown in Figure 3, Figure 5 is a circuit diagram showing the second embodiment of the present invention, Figure 6 is a graph showing startup characteristics at low temperatures, and Figure 7 is a graph showing the horsepower per horsepower. This is a graph showing the required amount of refrigerant and installed capacity. 1... Compressor, 2... Curved condenser, 3... Curved throttle mechanism, 4... Evaporator, 21.22...
Solenoid valve, 23... curved bypass circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 圧縮機の出側に凝縮器、絞り機構、および蒸発器を順次
接続して閉回路を構成した空気調和機において、前記圧
縮機の出側と入側とを運転時閉の第１開閉弁を有するバ
イパス回路を介して接続するととも′に、このバイパス
回路と圧縮機の入側との接続位置より上流側でかつ前記
凝縮器より下流側の所要位置に運転時開の第２開閉弁を
設け、前記圧縮機の停止時に、第２開閉弁を閉じて圧縮
機への液寝込みを防止するとともに、第１開閉弁を一定
時間のみ開いて高低圧のガスバランスを強制的に行なう
ことを特徴とする空気調和機。In an air conditioner in which a condenser, a throttle mechanism, and an evaporator are sequentially connected to an outlet side of a compressor to form a closed circuit, a first on-off valve that closes the outlet side and the inlet side of the compressor during operation is provided. A second on-off valve that is open during operation is provided at a predetermined position upstream from the connection position between the bypass circuit and the inlet side of the compressor and downstream from the condenser. , when the compressor is stopped, the second on-off valve is closed to prevent liquid from entering the compressor, and the first on-off valve is opened only for a certain period of time to forcibly balance high and low pressures. air conditioner.