Title:
IMPELLER AIRFLOW METER AND VENTILATION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/000668
Kind Code:
A1
Abstract:
An impeller airflow meter, comprising: a rotating portion (503) which is capable of rotating in a circumferential direction; a housing (501) which is provided with a first shaft base (507) and a second shaft base (506) arranged at intervals in a first direction; and a point shaft (508) which extends in the first direction and is arranged within the housing (501). A shaft hole (5031) of the rotating portion (503) is sleeved on the point shaft (508). The point shaft (508) and the rotating portion (503) rotate coaxially. Two tips of the point shaft (508) are respectively mounted on the first shaft base (507) and the second shaft base (506). No bearing is provided between the shaft hole (5031) of the rotating portion (503) and the point shaft (508). Multiple impeller blades (504) are arranged at intervals in a circumferential direction on an outer peripheral surface of the rotating portion (503). The impeller airflow meter can lower the starting wind speed, and the impeller blades can be pushed to rotate by a small air volume.
Inventors:
LU BINGLI (CN)
RUAN HONGZHENG (CN)
RUAN HONGZHENG (CN)
Application Number:
PCT/CN2022/077665
Publication Date:
January 26, 2023
Filing Date:
February 24, 2022
Export Citation:
Assignee:
E3 GREEN TECH CO LTD (CN)
International Classes:
G01F1/10; F16K1/22; F16K1/32; F16K27/02; F16K31/04; F16K31/44; G01F15/00; G01P5/06
Foreign References:
| CN215334533U | 2021-12-28 | |||
| CN215673632U | 2022-01-28 | |||
| CN215673633U | 2022-01-28 | |||
| CN215635036U | 2022-01-25 | |||
| CN113404877A | 2021-09-17 | |||
| EP1596062A1 | 2005-11-16 | |||
| CN108845158A | 2018-11-20 | |||
| CN1178002A | 1998-04-01 | |||
| CN109630695A | 2019-04-16 | |||
| US5325729A | 1994-07-05 | |||
| EP3306276A1 | 2018-04-11 | |||
| US4086811A | 1978-05-02 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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