Self-diagnosing transport refrigerating apparatus

摘要

A refrigerating apparatus includes a casing body attached to an opening formed at one end of a box-shaped cooling compartment so as to close the opening, a refrigeration cycle unit including a compressor and a radiator provided on an outer side of the cooling compartment relative to the casing body and an evaporator provided on an inner side of the cooling compartment relative to the casing body, a diagnosis process executer configured to control the refrigeration cycle unit to execute a diagnosis process for diagnosing a performance of the cooling compartment, and a performance determinator configured to determine the performance of the cooling compartment in the diagnosis process.

主权项

1. A refrigerating apparatus, comprising:
a casing body attached to an opening formed at one end of a box-shaped cooling compartment so as to close the opening; a refrigeration cycle unit including
a compressor and a radiator provided on an outer side of the cooling compartment relative to the casing body, andan evaporator provided on an inner side of the cooling compartment relative to the casing body; a diagnosis process executer configured to control the refrigeration cycle unit to execute a diagnosis process for diagnosing a performance of the cooling compartment; and a performance determinator configured to determine airtightness of the cooling compartment based on the performance of the cooling compartment during the diagnosis process, wherein the refrigeration cycle unit includes a defrosting start determinator configured to start a defrosting operation of the evaporator when an amount of frost on the evaporator exceeds a predetermined amount, the diagnosis process executer is configured to perform, upon start of the diagnosis process, a cooling operation for cooling an inside of the cooling compartment by the evaporator, and the performance determinator is configured to determine the airtightness of the cooling compartment based on a time Δt1 between a predetermined point after start of the cooling operation and a point at which the defrosting start determinator starts the defrosting operation.