JPH0270179U

JPH0270179U -

Info

Publication number: JPH0270179U
Application number: JP14753788U
Authority: JP
Priority date: 1988-11-14
Filing date: 1988-11-14
Publication date: 1990-05-28

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の制御回路図、第２
図は上記実施例のフローチヤート、第３図は従来
の冷媒系統図、第４図は従来の制御回路図である
。Ｔ_１，Ｔ_２，Ｔ_３……サーモスイツチ、１……
エンジン、２……コンプレツサ、３……スリーウ
エイバルブ、４……デフロストソレノイドバルブ
、５……コンデンサ、６……コンデンサフアン、
７……コンデンサフアンモータ、８……膨張弁、
９……エバポレータ、１０……エバポレータフア
ン、１１……エバポレータフアンモータ、１２…
…逆止弁、１３……サーモセンサー、１４……制
御装置、１５……温度調節指示計、２１……バツ
テリ、２２……イグニツシヨンスイツチ、２３，
２４，２５……リレー、２６……リレー２４の常
閉接点、２７……バツテリ充電タイマ３０の常開
接点、２８……リレー２５の常開接点、２９……
リレー２４の常開接点、３０……バツテリ充電タ
イマ、４０……切換スイツチ、４１，４４，４５
……リレー、４６……リレー４４の常開接点、４
７……リレー２５の常開接点、４８……リレー４
１の常開接点、４９……リレー２３の常閉接点、
５０……リレー２５の常閉接点、６０……バツテ
リ充電タイマ３０の常閉接点。 Fig. 1 is a control circuit diagram of an embodiment of the present invention;
The figure is a flowchart of the above embodiment, FIG. 3 is a conventional refrigerant system diagram, and FIG. 4 is a conventional control circuit diagram. T ₁ , T ₂ , T ₃ ... thermo switch, 1 ...
Engine, 2... Compressor, 3... Three-way valve, 4... Defrost solenoid valve, 5... Capacitor, 6... Condenser fan,
7... Capacitor fan motor, 8... Expansion valve,
9... Evaporator, 10... Evaporator fan, 11... Evaporator fan motor, 12...
... Check valve, 13 ... Thermosensor, 14 ... Control device, 15 ... Temperature control indicator, 21 ... Battery, 22 ... Ignition switch, 23,
24, 25... Relay, 26... Normally closed contact of relay 24, 27... Normally open contact of battery charging timer 30, 28... Normally open contact of relay 25, 29...
Normally open contact of relay 24, 30... Battery charging timer, 40... Changeover switch, 41, 44, 45
... Relay, 46 ... Normally open contact of relay 44, 4
7... Normally open contact of relay 25, 48... Relay 4
1 normally open contact, 49...normally closed contact of relay 23,
50... Normally closed contact of relay 25, 60... Normally closed contact of battery charging timer 30.

Claims

[Scope of utility model registration request]

It is driven by an engine that automatically starts and stops when the temperature inside the refrigerator goes below the set temperature, and stops when the temperature reaches the set temperature. is set, and if the temperature inside the refrigerator reaches the set temperature before the set time elapses, the transport refrigeration equipment will perform freezing and heating operations within the set temperature range. a means for selecting whether the main operation is the main operation or a main operation for the heating; a means for stopping the engine after switching to the freezing operation when the predetermined time has elapsed during the heating operation when the main operation is the freezing operation; A refrigeration system for transportation characterized by comprising means for switching to heating operation and then stopping the engine when the predetermined time period has elapsed during refrigeration operation when the main body is selected.