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4. 发明专利

JPH0526504A COMPRESSOR CONTROLLER OF AIR CONDITIONER 失效
公开(公告)号：JPH0526504A
公开(公告)日：1993-02-02
申请号：JP18082691
申请日：1991-07-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIHARA YOSHIKAZU , FUJIKAWA NAOTO , TAKAHARA TSUTOMU
IPC分类号： F24F11/02 , F25B1/00
摘要： PURPOSE:To provide a control that is able to operate an exact room cooling and heating and give a sure protection by a constitution comprising a wind circuit such as a four-way blow-out and the use of a plurality of heat exchangers. CONSTITUTION:In an air conditioner that is capable of operating room cooling temperature sensors 2a, 2b to detect the temperature of a heat exchanger in room are provided. A comparison means 4 that compares a plurality of temperatures that are detected and a controller 7 that selects a high value in the temperature by the result of the comparison and carries out a change in the frequency of a variable frequency compressor 9 or stops its operation are provided.

5. 发明专利

JPH0451169B2 失效
公开(公告)号：JPH0451169B2
公开(公告)日：1992-08-18
申请号：JP16053485
申请日：1985-07-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI HARUO , ZAIZEN KATSUNORI , EGUCHI OSAMU , OGAWA YASUO , TABUCHI SADATOSHI , FUJIKAWA NAOTO
IPC分类号： A47J27/00 , F24C15/00

6. 发明专利

JPH04203732A AIR CONDITIONER 失效
公开(公告)号：JPH04203732A
公开(公告)日：1992-07-24
申请号：JP33507290
申请日：1990-11-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKAHARA TSUTOMU , FUJIKAWA NAOTO
IPC分类号： F24F11/02
摘要： PURPOSE:To decide accurately and inform a user that a filter is clogged by detecting motor load which varies with the clogging of an actual filter based on a charge in a driving phase angle. CONSTITUTION:Time count is assumed as 0. The number of revolution No of a fan 210 is set conformity with a room temperature and an early stage phase angle responding to the setting is determined. Then, a microcomputer 211 compares a rotational speed of a fan 29 detected by a rotational speed detection means 12 with a preset operation speed and controls a phase angle of a TRIAC 212 so that the both speeds may be identical. When the difference between the phase angle is in conformity with the rotational speed and a corrected phase angle exceeds a specified value, time count starts. Larger differential time not only halts the operation of an air supply means which exceeds the specified time but also drives an LED 26 and operates a filter check indication means 16.

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