Mitsubishi Denki Kabushiki Kaisha

Toshihiko Enomoto

Takashi Watanabe

Yu Seshimo

Makoto Saitou

Yasuo Nakashima

Masaoki Ino

Takao Komai

Yasufumi Hatamura

Susumu Kameyama

Tatsuya Mochizuki

Hiroyuki Kobayakawa

A cooling system that has a heat exchanger which is housed in one enclosure and is constituted of a plurality of heat exchange modes, and the heat exchanger includes a refrigerant forced circulation mode, a refrigerant natural circulation mode, and a ventilation mode. A temperature detector performs switching to an optimal mode, to thereby cool the inside of the enclosure of a housing accommodating equipment including a heat-generating component.

Cooling device

A defrosting system for a heat exchanger includes a temperature detector arranged adjacent to the exchanger, a temperature memory for storing temperature data detected by the detector, and a central processing unit, wherein when a second temperature which is detected by the temperature detector after normal operation requested by a user has restarted and after a predetermined minimum defrosting prohibitive time has passed, drops by a predetermined difference in temperature from a first temperature which is detected by the temperature detector after the normal operation has restarted and after a predetermined defrosting prohibitive time has passed, and the second temperature is a predetermined temperature or below; the central processing unit carries out the defrosting operation. As a result, when the amount of frost has rapidly increased during the defrosting prohibitive time, the defrosting operation is carried out even if the defrosting prohibitive time has not passed, thereby deteriorating the capability of the exchanger and preventing the frost from remaining after the defrosting operation has been completed.

Defrosting system for a heat exchanger

Growing community of inventors

Tokyo, Japan

Toshihiko Enomoto