Refrigerant leak detector and air conditioner including refrigerant leak detector

A refrigerant leak detector, comprising:

• one or more sensor;
• and
• one or more jig configured to contact an outer circumferential surface of a refrigerant pipe and support the one or more sensors, wherein the one or more jig comprises a curved surface configured to contact a respective refrigerant pipe and a flat surface that is located in a direction opposite to the curved surface and supports the one or more sensor, wherein the one or more jig further comprises a step portion formed on the flat surface, and wherein the step portion is configured to focus and an elastic wave transmitted from the refrigerant pipe toward the one or more sensor so as to reduce signal loss.

An air conditioner comprising at least one refrigerant leak detector, the at least one refrigerant leak detector comprising an acoustic emission sensor that detects an elastic wave generated from a refrigerant leak site in a refrigerant pipe, and a jig comprising a lower end portion configured to contact an outer circumferential surface of the refrigerant pipe and an upper end portion in contact with the acoustic emission sensor, wherein the lower end portion comprises a curved surface configured to contact the refrigerant pipe, wherein the upper end portion comprises a flat surface that supports the acoustic emission sensor, wherein the jig further comprises a step portion formed on the flat surface, and wherein the step portion is configured to focus and the elastic wave transmitted from the refrigerant pipe toward the acoustic emission sensor so as to reduce signal loss.