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Title:
GROUND SURFACE AIR RETURN DEVICE AND CONTAMINANT CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/114150
Kind Code:
A1
Abstract:
Provided are a ground surface air return device and a contaminant control system including said air return device, which are useful in improving the suction efficiency of the air return device and ensuring the strength of an upper case when the overall height of the device is limited. A ground surface air return device according to the present invention includes: an upper case provided with at least one suction opening; a lower case provided with at least one discharge opening; and a fan assembly that is provided in a storage cavity formed by the upper case and the lower case, and air suction opening of which faces the upper case. The suction opening of the upper case substantially corresponds to the air suction opening of the fan assembly.

Inventors:
CAI SHI
WANG ZHEYUAN
XU FAN
Application Number:
PCT/JP2021/043483
Publication Date:
June 02, 2022
Filing Date:
November 26, 2021
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
F24F13/02; F04D29/42; F04D29/44; F24F7/10
Domestic Patent References:
WO2018116579A12018-06-28
Foreign References:
JPS5220772U1977-02-14
JP2007113847A2007-05-10
JP2003328983A2003-11-19
JP3043111U1997-11-11
JP2001182691A2001-07-06
JP2003269766A2003-09-25
JP2001082780A2001-03-30
JPH01153440U1989-10-23
US20200173684A12020-06-04
US5910045A1999-06-08
CN108954648A2018-12-07
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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