Title:
空気調和装置
Document Type and Number:
Japanese Patent JP7497967
Kind Code:
B2
Abstract:
To provide an air conditioning device that can reduce noise.SOLUTION: An air conditioning device according to an embodiment comprises a centrifugal pump and a control unit. The control unit controls an operation of the centrifugal pump. The centrifugal pump comprises a case, an impeller, and a motor. The case comprises a suction port and a discharge port. The impeller is arranged in the case, and comprises a plurality of blades, and can rotate. The motor rotates the impeller. A central axis of the discharge port and a rotation axis of the impeller are located at skew positions. The plurality of blades is arranged side by side in a circumferential direction of the impeller. The plurality of blades is formed into an arcuate shape so as to be convex in the circumferential direction of the impeller when viewed from a direction of the rotation axis of the impeller. The plurality of blades can intersect with the central axis of the discharge port when the impeller rotates. The control unit gradually decrease a rotation speed of the impeller when stopping an operation of the air conditioning device.SELECTED DRAWING: Figure 4
Inventors:
Yousuke Komatsu
Application Number:
JP2019173767A
Publication Date:
June 11, 2024
Filing Date:
September 25, 2019
Export Citation:
Assignee:
Nippon Carrier Corporation
International Classes:
F04D15/00; F04D1/14; F24F11/85
Domestic Patent References:
| JP10299686A | ||||
| JP1178791A | ||||
| JP3202111U | ||||
| JP6012785U | ||||
| JP2015202903A |
Attorney, Agent or Firm:
Patent Attorney Shiga International Patent Office
Previous Patent: Robot system and robot control device
Next Patent: Numerical control device, machine tool system, and numerical control method
Next Patent: Numerical control device, machine tool system, and numerical control method