AIR BLOWING CONTROL METHOD FOR CONDENSOR, AIR BLOWING CONTROL DEVICE AND FREEZER

PURPOSE: To enable a stable control of operating frequency of a blower to be carried out at a low temperature by a method wherein when the surrounding air temperature around a condensor is lower than a set temperature, the rate of variation of a blower is limited within a predetermined range. CONSTI...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MIHARA KAZUHIKO, ASAI TAKEO
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING RANGES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: To enable a stable control of operating frequency of a blower to be carried out at a low temperature by a method wherein when the surrounding air temperature around a condensor is lower than a set temperature, the rate of variation of a blower is limited within a predetermined range. CONSTITUTION: In cases where the surrounding air temperature around a condensor 7 is lower than a set value (for example, 0 deg.C), the operating frequency (f) of a fan motor 6 determined by a previous cycle and the operating frequency F of the fan motor 6 determined by the present cycle are compared to each other. As a result, when f>=F, a certain set value (n) (for example, 1rpm/sec) is added to the frequency (f) determined previously (F=f+n) and then the frequency (f) determined previously is substracted by the set value (n) and the value is outputted to the fan motor 6 as a frequency determined at the present time. In this way, irrespective of the temperature at the condensor 7, it is possible to limit it in such a way that an amount of variation per cycle time of the operating frequency F to be outputted to the fan motor 6 may not exceed ±n in reference to the frequency (f) determined previously.