Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DEFROSTING OPERATION CONTROL DEVICE AND METHOD
Document Type and Number:
Japanese Patent JP2007225155
Kind Code:
A
Abstract:

To provide a defrosting operation control device and its method capable of starting defrosting at a proper defrosting time according to a frost formation position, by surely detecting the frost formation positions to an evaporator 10 as a heat exchanger.

A controller 4 classifies a frost formation type 1 where the frost formation is found at an inlet of the evaporator 10 when a straight line connecting an indoor temperature/humidity on a psychrometric diagram of the evaporator 10 and an outside temperature/humidity, passes above a saturation line, a frost formation type 3 where the frost formation is found at an outlet of the evaporator when a temperature of a suction air sensor 17 is 0°C or more, and a frost formation type 2 of cases excluding the above. The controller 4 changes the defrosting starting time according to the classified frost formation position.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
TOYOSHIMA MASAKI
YAMASHITA KOJI
NAKADA HIROSHI
SUGIMOTO TAKESHI
Application Number:
JP2006044454A
Publication Date:
September 06, 2007
Filing Date:
February 21, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F25B47/02; F24F11/02; F25D21/06
Domestic Patent References:
JPS61101786A1986-05-20
JPS58164982A1983-09-29
JPS62258982A1987-11-11
JPH03103972U1991-10-29
JP2002147904A2002-05-22
JPH10111050A1998-04-28
JPH04131645A1992-05-06
JP2000259222A2000-09-22
JP2003207188A2003-07-25
JP2002277115A2002-09-25
Attorney, Agent or Firm:
Hisao Kobayashi
Kiyoshi Yasushima
Souji Sasaki
Noboru Omura
Takanashi Norio



 
Previous Patent: HUMIDITY ADJUSTING METHOD OF ENVIRONMENT TESTING DEVICE, AND ENVIRONMENT TESTING DEVICE

Next Patent: TEMPERATURE ADJUSTING DEVICE