Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Patent
1998-09-29
2000-08-15
Ford, John K.
Heat exchange
With timer, programmer, time delay, or condition responsive...
Having heating and cooling capability
237 2A, 237 2B, 622386, 622387, 622284, 623246, 165240, F29B 2900, F24F 1102
Patent
active
061021148
ABSTRACT:
A multi-room air conditioning system includes an outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. A compressor frequency and combustion control calculator reads a load level for each indoor unit from a load coefficient table using a differential temperature calculated by a differential temperature calculator and a rated capacity stored in a rated capacity memory. The compressor frequency and combustion control calculator then multiplies a sum of the load levels by a predetermined constant and adds a compensation value thereto to obtain a frequency value. This value is used to control the compressor. The compressor frequency and combustion control calculator also sets a target combustion level using the frequency value for control of a refrigerant heater mounted in the outdoor unit.
REFERENCES:
patent: 4506521 (1985-03-01), Asano et al.
patent: 4553401 (1985-11-01), Fisher
patent: 5050396 (1991-09-01), Ohkoshi et al.
patent: 5169063 (1992-12-01), Miyazaki et al.
patent: 5343935 (1994-09-01), Sumitani
Ao Takahiko
Ishikawa Norimasa
Nishihara Yoshikazu
Ogawa Masanori
Takanashi Youji
Ford John K.
Matsushita Electric - Industrial Co., Ltd.
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