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Title:
AIR DUCT ASSEMBLY, CROSS-FLOW FAN, AND AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/236680
Kind Code:
A1
Abstract:
An air duct assembly, a cross-flow fan, and an air conditioning device. The air duct assembly comprises a volute casing (1), a volute tongue (2), and an impeller (3); the volute tongue (2) comprises a first portion (21) and a second portion (22), the first portion (21) is matched with the volute casing (1) to envelop the impeller (3), and an air outlet (7) is formed between the second portion (22) and the volute casing (1); an angle α is equal to an angle β, wherein the angle α is an angle formed by a connecting line OA and a connecting line OC, the angle β is an angle formed by a connecting line OB and a connecting line OC, O is a circle center point of the radial section of the impeller (3), A is a point, closest to the circle center point O, on the volute casing (1), B is a point, closest to the circle center point O, on the first portion (21), and C is a point, closest to the circle center point O, on an extension line of the second portion (22). Such an arrangement can reduce air suction resistance, air can be smoothly blown out, and thus the air duct assembly is uniform in air supply and stable in operation.

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WO/2022/089298TANGENTIAL FAN ASSEMBLY, AIR CONDITIONER AND METHOD FOR ADJUSTING AIR VOLUME OF AIR CONDITIONER
WO/2021/114712CROSS-FLOW FAN, AIR CONDITIONER INDOOR UNIT, AIR CONDITIONER, AND AIR PORT CONTROL METHOD
WO/2020/125275CABINET-TYPE AIR CONDITIONER
Inventors:
LIANG FUFEI (CN)
GUAN HUANHAO (CN)
WU MINGGUO (CN)
XIE HENG (CN)
XIE LINBIN (CN)
ZHANG HAICHENG (CN)
Application Number:
PCT/CN2023/091068
Publication Date:
December 14, 2023
Filing Date:
April 27, 2023
Export Citation:
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Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F24F1/0025; F04D17/04; F04D25/08; F04D29/26; F04D29/42; F04D29/44; F04D29/62
Foreign References:
CN114837974A2022-08-02
TWM460169U2013-08-21
GB1138454A1969-01-01
EP1243864A22002-09-25
JPH05126089A1993-05-21
DE19823197A11999-12-02
JPS61207891A1986-09-16
CN212204892U2020-12-22
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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