JPS6245655U

JPS6245655U -

Info

Publication number: JPS6245655U
Application number: JP13687285U
Authority: JP
Priority date: 1985-09-09
Filing date: 1985-09-09
Publication date: 1987-03-19

Description

[Brief explanation of the drawing]

第１図は、本考案に係る冷媒漏れ検出装置のブ
ロツク図、第２図は、本考案に係る冷媒漏れ検出
装置の構成図、第３図は、冷房装置内に封入され
た冷媒の外温度―スーパーヒート度特性線図、第
４図は、冷媒温度センサ及び冷媒圧力センサの温
度、圧力―電圧特性線図、第５図は、本考案に係
る冷媒漏れ検出装置のコンピユータ内に記憶され
ているプログラムのフローチヤート、第６図は、
従来の冷房装置の概略構成図、第７図は、従来の
コンプレツサの制御回路図である。３…コンプレツサ、７…エバポレータ、８…マ
グネツトクラツチ、１２…加速カツトスイツチ、
１３…圧力スイツチ。 Fig. 1 is a block diagram of a refrigerant leak detection device according to the present invention, Fig. 2 is a block diagram of a refrigerant leak detection device according to the present invention, and Fig. 3 is an external temperature of the refrigerant sealed in the cooling device. - Superheat degree characteristic diagram; Figure 4 is a temperature and pressure-voltage characteristic diagram of the refrigerant temperature sensor and refrigerant pressure sensor; Figure 5 is the diagram stored in the computer of the refrigerant leak detection device according to the present invention; The flowchart of the program shown in Figure 6 is as follows.
FIG. 7, which is a schematic configuration diagram of a conventional cooling device, is a control circuit diagram of a conventional compressor. 3... Compressor, 7... Evaporator, 8... Magnetic clutch, 12... Acceleration cut switch,
13...Pressure switch.

Claims

[Scope of utility model registration request]

Outside air sensor 20 that detects the temperature of the air outside the vehicle interior
and a refrigerant temperature sensor 21 that detects the temperature of refrigerant sealed in a cooling device that cools the vehicle interior.
A refrigerant pressure sensor 22 that detects the pressure of the refrigerant sealed in the cooling device, and a formula for calculating the amount of superheat and the amount of superheat of the refrigerant at the outside temperature when the refrigerant is sealed in the cooling device are stored. ROM 24, the outside air sensor 20, the refrigerant temperature sensor 21, and the refrigerant pressure sensor 22.
The current superheat amount of the refrigerant is calculated using the superheat amount calculation formula stored in the ROM 24 based on the signal of A superheat amount conversion means 23 that converts into a heat amount compares the superheat amount stored in the ROM 24 with the superheat amount converted by the superheat amount conversion means 23, and determines whether to issue a warning. An air conditioner for an automobile, comprising: a superheat amount comparison/determination means 25 for comparing and determining the superheat amount; and a warning means 26 for issuing a warning when a signal is output from the superheat amount comparison/judgment means 25.