Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INDUCED DRAFT FAN AND GAS FURNACE USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/056687
Kind Code:
A1
Abstract:
Disclosed are an induced draft fan and a gas furnace using same. The induced draft fan comprises a volute (1) and a wind wheel (4) mounted in an inner cavity (19) of the volute (1), wherein the wind wheel (4) is connected to a rotating shaft of an electric motor and is driven by the rotating shaft to rotate; a lateral portion of the volute (1) is provided with an air outlet pipe (10), and the air outlet pipe (10) comprises an inner pipe (11) and an outer pipe (12); the inner pipe (11) is in communication with the inner cavity (19) and forms an air outlet channel (111) of the induced draft fan; the outer pipe (12) encircles the inner pipe (11), and a ring-shaped groove (13) is formed between the outer pipe (12) and the inner pipe (11); and an outer end of the outer pipe (12) is provided with a notch (121), a fixed block (120) is formed on the periphery of the notch (121) of the outer pipe (12), a movable block (122) is mounted on the notch (121), the movable block (122) and the fixed block (120) enclose a ring-shaped fixed portion (14), and the fixed block (120) and the movable block (122) are locked by means of a fastener. The induced draft fan has a simple structure, and a conversion connector and a seal ring of the gas furnace are convenient to mount.

Inventors:
LIN, Yanhu (Shalang Town No. 3 Industrial Area, West District Zhongshan, Guangdong 0, 528400, CN)
LEI, Wei (Shalang Town No. 3 Industrial Area, West District Zhongshan, Guangdong 0, 528400, CN)
WANG, Fengqi (Shalang Town No. 3 Industrial Area, West District Zhongshan, Guangdong 0, 528400, CN)
Application Number:
CN2018/074394
Publication Date:
March 28, 2019
Filing Date:
January 28, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD. (Shalang Town No. 3 Industrial Area, West District Zhongshan, Guangdong 0, 528400, CN)
International Classes:
F04D29/44; F04D25/08; F04D29/62
Foreign References:
CN205779904U2016-12-07
CN206439207U2017-08-25
CN103671385A2014-03-26
CN203130542U2013-08-14
CN101265922A2008-09-17
CN205503516U2016-08-24
CN103307032A2013-09-18
CN106065583A2016-11-02
CN203384113U2014-01-08
US20160345488A12016-12-01
JPH11223194A1999-08-17
Attorney, Agent or Firm:
ZHONGSHAN HANTONG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (Room 305-308, 4th Floor Building A,No. 8 Longfeng Street,Qitou Xincun, Shiqi Distric, Zhongshan Guangdong 0, 528400, CN)
Download PDF: