JPS61145271U

JPS61145271U -

Info

Publication number: JPS61145271U
Application number: JP2715685U
Authority: JP
Priority date: 1985-02-28
Filing date: 1985-02-28
Publication date: 1986-09-08

Description

[Brief explanation of the drawing]

第１図は本考案に係る冷媒量検出装置を用いた
自動車用冷房サイクルの全体概略図、第２図は第
１図に示す冷媒量検出装置の断面図、第３図は本
考案に係る冷媒量検出装置の作用を示すモリエ線
図、第４図は封入冷媒量に対するスーパーヒート
度若しくはサブクール度を示す線図、第５図は従
来の冷媒量検出装置を用いた自動車用冷房サイク
ルの全体概略図、第６図は冷房サイクルをモリエ
線図上に表した線図である。１……冷房サイクル、２……マグネツトクラツ
チ、３……コンプレツサ、４……コンデンサ、６
……膨張弁、７……エバポレータ、１０，１０ａ
……スーパーヒートスイツチ、１２……センサ部
、Ｌ……飽和液線、Ｖ……飽和蒸気線。 Fig. 1 is an overall schematic diagram of an automobile cooling cycle using a refrigerant amount detection device according to the present invention, Fig. 2 is a sectional view of the refrigerant amount detection device shown in Fig. 1, and Fig. 3 is a refrigerant according to the present invention. A Mollier diagram showing the action of the amount detection device, Fig. 4 is a diagram showing the superheat degree or subcool degree with respect to the amount of refrigerant enclosed, and Fig. 5 is an overall outline of an automobile cooling cycle using a conventional refrigerant amount detection device. FIG. 6 is a diagram showing the cooling cycle on a Mollier diagram. 1... Cooling cycle, 2... Magnetic clutch, 3... Compressor, 4... Condenser, 6
...Expansion valve, 7...Evaporator, 10, 10a
...Super heat switch, 12...Sensor section, L...Saturated liquid line, V...Saturated vapor line.

Claims

[Scope of utility model registration request]

The gas refrigerant that has been adiabatically compressed in the compressor 3 to become high temperature and high pressure is exchanged with external air in the condenser 4 to become a low temperature and high pressure liquid refrigerant, and the liquid refrigerant is passed through the expansion valve 6 to become a low pressure mist refrigerant. The air that is passed through the evaporator 7 and blown into the vehicle interior is cooled by the evaporator 7, while the refrigerant itself becomes a low-pressure gaseous refrigerant and is again sent to the compressor 3. High pressure side line B leading to expansion valve 6
A superheat detection means 10a is provided on the way to detect that the degree of superheat of the refrigerant passing through the line B is 0 or more, and the superheat detection means 10a is used to detect an insufficient flow rate of the refrigerant circulating in the cooling cycle. A refrigerant amount detection device for automotive cooling cycles.