JPS60155839U

JPS60155839U - Electric control circuit for heat pump air conditioner

Info

Publication number: JPS60155839U
Application number: JP4059384U
Authority: JP
Inventors: 鈴木　太八郎
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1984-03-22
Filing date: 1984-03-22
Publication date: 1985-10-17

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 the drawing]

第１図は、ヒートポンプ式空調機の冷媒回路図、第２図
は、従来の空調機の電気制御回路図、第３図は、こめ考
案め一実施例を示す回路図である。図中１は圧縮機、１ａは圧縮機駆動モータ、２は冷暖房
切換四方弁、２ａは四方弁コイル、３は、室外熱交換器
、５は室外熱交換器、７は電源端−子、８は電源スィッ
チ、９は冷暖切換スイッチ、９ａｔ９ａ’はそれの暖房
側接点、９　ｂｙ　ｇｂ’は冷房側接点、１０は蒙内フ
ァンモータ、１１は室外、ファンモータ、１２は霜取り
タイマーモータ、１３は霜取りタイマー接点、１３ａは
それの常閉接点、１３ｂ、１３ｃは常開接点、１４は霜
取りサニモ接点、１５は冷風吹出し防止サーモ接点であ
る。図中同一符号は同−或は相当部分を示す。FIG. 1 is a refrigerant circuit diagram of a heat pump type air conditioner, FIG. 2 is an electrical control circuit diagram of a conventional air conditioner, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. In the figure, 1 is the compressor, 1a is the compressor drive motor, 2 is the air conditioning/heating switching four-way valve, 2a is the four-way valve coil, 3 is the outdoor heat exchanger, 5 is the outdoor heat exchanger, 7 is the power terminal, 8 is the power switch, 9 is the cooling/heating selector switch, 9at9a' is the heating side contact, 9 by gb' is the cooling side contact, 10 is the indoor fan motor, 11 is the outdoor fan motor, 12 is the defrost timer motor, 13 is the Defrost timer contact 13a is its normally closed contact, 13b and 13c are normally open contacts, 14 is a defrost sanimo contact, and 15 is a cold air blowout prevention thermo contact. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A defrost timer that is activated by a defrost tie that is connected to the power supply through a power switch contact that closes due to frost formation on the compressor, and returns after a predetermined time. A heat pump type air conditioner in which a parallel circuit consisting of a four-way valve coil that switches the refrigerant circuit according to cooling and heating is connected through a closed contact to an outdoor fan motor, and through a temperature changeover switch contact and the above-mentioned defrost timer contact. The electric control circuit is configured to switch the refrigerant circuit to cooling operation by energizing the four-way valve coil, and the four-way valve coil is connected in parallel to the cooling side contact of the cooling/heating changeover switch and the normally closed contact of the defrost timer. Heat pump type air connected to the above parallel circuit 3゜)"1.-F'1777%-54□, □Ah, the heating side contact of the engineering switch and the indoor heat exchanger refrigerant open when the temperature is below the specified temperature. The heat pump according to claim 1, which is connected to the parallel circuit through a series connection with a cold air blowout prevention thermo contact point and a seven-row connection with a cooling side contact of the air conditioning/heating changeover switch. (3) The utility model according to claim 1 or 25, wherein the normally open contact of the defrost timer is connected in parallel to the contact that closes due to frost formation. Electrical control circuit for heat pump air conditioner. −