JPS60113463U

JPS60113463U - air conditioner

Info

Publication number: JPS60113463U
Application number: JP19972683U
Authority: JP
Inventors: 浅井　節郎; 文雄原田
Original assignee: 株式会社日立製作所
Priority date: 1983-12-30
Filing date: 1983-12-30
Publication date: 1985-07-31

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

[Brief explanation of drawings]

第１図は本考案の一実施例の冷凍サイクルの系統図、第
２図はインバータから圧縮機へ供給される電力波形図ζ
第３図はモータ効率の周波数（回転数）特性を示す線図
、第４図は圧縮機の構造を示す断面図である。１・・・・・・密閉形圧縮機、２・・・・・・吐出口、
３・・・・・・吸入口、４・・・・・・四方弁、７・・
・・・・電磁弁、８・・・・・・膨張弁１．、．１１−
、−・・・・膨張弁、１２・・・・・・キャピラリ、１
３・・・・・・インバータ、１４・・・・・・電磁弁。Figure 1 is a system diagram of a refrigeration cycle according to an embodiment of the present invention, and Figure 2 is a power waveform diagram ζ supplied from the inverter to the compressor.
FIG. 3 is a diagram showing frequency (rotation speed) characteristics of motor efficiency, and FIG. 4 is a sectional view showing the structure of the compressor. 1...Hermetic compressor, 2...Discharge port,
3... Intake port, 4... Four-way valve, 7...
...Solenoid valve, 8...Expansion valve 1. ,． 11-
, -... Expansion valve, 12... Capillary, 1
3... Inverter, 14... Solenoid valve.

Claims

[Scope of utility model registration request]

In an air conditioner that has a capacity-controlled, low-pressure chamber type, completely hermetic compressor whose rotation speed is controlled by an inverter, etc., defrost operation is performed using the hot gas bypass method, and at this time the power frequency of the compressor motor is An air conditioner characterized by being supplied and controlled at a frequency 10 to 50% higher than the frequency for maximum efficiency.