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Title:
BLOWER DEVICE, AND UTILIZATION UNIT AND HEAT SOURCE UNIT OF AIR CONDITIONER DEVICE, WATER HEATER, AND AIR PURIFIER, HAVING THE BLOWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/163573
Kind Code:
A1
Abstract:
The present invention proposes a blower device capable of preventing occurrence of defective oil film formation in a bearing with a lubricant sealed therein while suppressing electric power consumption of a motor, and a utilization unit and heat source unit of an air conditioner device, a water heater, and an air purifier, that have the blower device. A blower device (100) includes a motor (134) and a control unit (123). A rotating shaft (134c) of the motor is borne by a bearing (134d) in which a lubricant (134d5) is sealed. The motor is capable of variable rotation speed. The control unit drives the motor. The control unit performs at least one of first control and second control. In the first control, if the motor is continuously driven for a first amount of time at no more than a first rotation speed, the control unit drives the motor at a second rotation speed that is greater than the first rotation speed, and thereafter drives at no more than the first rotation speed. In the second control, if a driving state of the motor is changed from a stopped state to a rotating state, the control unit drives the motor at a fourth rotation speed, and thereafter drives at no more than a third rotation speed that is smaller than the fourth rotation speed.

Inventors:
NAKANO AKIHIRO
TAKAYAMA YOSHINORI
Application Number:
PCT/JP2022/002415
Publication Date:
August 04, 2022
Filing Date:
January 24, 2022
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
F04D27/00; F04D29/059; F16C33/66; F24F7/003; F24F11/74
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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