Leakage detection device

Abstract

A leakage detection device is provided. The device comprises a trunk leakage detection part, which is formed by connecting one or more leakage detection units in series, the leakage detection unit includes a leakage detection belt and a node, the leakage detection belt is composed of a pair of conductive wires, a detection area where a current flows when the leakage is in contact is provided, thenode is connected to the leakage detection belt, and a constant voltage element that conducts when the applied voltage reaches a prescribed voltage value is provided; a branch liquid detection part which is formed by connecting one or more leakage detection units in series; a power supply; a current sensor; and a determination unit, which determines the occurrence of leakage based on the input current value detected by the current sensor. The branch initial end of the branch leakage detection part is connected with the leakage detection unit of the trunk leakage detection part and has a characteristic that the leakage detection unit conducts according to the input voltage value, and the determination part determines the occurrence of the leakage based on the input current value detected by the current sensor.

Description

technical field [0001] The present disclosure relates to the configuration of a liquid leakage detection device, and particularly relates to the configuration of a liquid leakage detection device using a constant pressure element. Background technique [0002] As a method of detecting the occurrence of liquid leakage from air-conditioning equipment, etc., a method is used in which a current is passed through a liquid leakage detection zone obtained by arranging two lead wires in a non-conductive state, and when the leakage liquid enters between the two lead wires is detected. short circuit, thereby detecting leakage. [0003] However, in such a liquid leakage detection method, even if the liquid leakage can be detected, the location where the liquid leakage occurs cannot be detected. Therefore, the following method has been proposed: arrange three electrode wires insulated in a liquid-permeable manner in parallel, and use a liquid leakage sensor configured to have two elect...

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art described in Japanese Patent Publication No. 7-119664, there is a problem that the number of electric wires arranged for each branch and connecting each electrode wire and the detector is large, and the structure is complicated.

Images