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Low-resistance combustion-promoting secondary fan structure

A secondary blower, low resistance technology, applied in the direction of combustion equipment, combustion methods, liquid fuel engines, etc., can solve the problems of air leakage loss, undesigned sealing structure, etc., to reduce air leakage loss, good fixing effect, solve the problem of connection The effect of destruction

Pending Publication Date: 2022-06-07
余姚风机总厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the above-mentioned patents is that the air inlet and air outlet of the secondary fan are not designed to be sealed when they are connected to the pipeline. large leak loss

Method used

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  • Low-resistance combustion-promoting secondary fan structure
  • Low-resistance combustion-promoting secondary fan structure
  • Low-resistance combustion-promoting secondary fan structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like figure 1 and figure 2 In the described embodiment, a low-resistance combustion-promoting secondary fan structure includes a casing 1, a rotor assembly is installed inside the casing 1, an air inlet port 2 and an air outlet port 3 are arranged on the casing 1, and the air intake A sealing device 4 is installed at both port 2 and outlet port 3, such as image 3 and Figure 4 As shown, the sealing device 4 includes an expansion sleeve 5 , and guide rings 6 are installed at both ends of the expansion sleeve 5 , and the two expansion sleeves 5 are respectively installed on the air inlet port 2 and the air outlet port 3 through the guide rings 6 .

[0033] like Figure 5 As shown, the expansion sleeve 5 includes an outer sleeve 7 and an inner sleeve 8. The port of the inner sleeve 8 is installed on the inner side wall of the guide ring...

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Abstract

The invention discloses a low-resistance combustion promoting secondary air fan structure. The sealing device comprises a shell, a rotor assembly is installed in the shell, an air inlet port and an air outlet port are formed in the shell, sealing devices are installed at the air inlet port and the air outlet port, each sealing device comprises an expansion sleeve, guide rings are installed at the two ends of each expansion sleeve, and the two expansion sleeves are installed on the air inlet port and the air outlet port through the guide rings respectively. The connecting device has the beneficial effects that through the design of the expansion sleeve between the pipeline and the port, the installation error between the port and the pipeline can be compensated, the thermal expansion difference generated by different wall temperatures of the port and the pipeline can be compensated, strength damage, instability damage and pipeline pull-off damage are avoided, and the sealing performance between the connecting pipeline and the air inlet and outlet port is improved; an annular sealing block is arranged at the position, extending out of the through hole of the shell, of the main shaft for sealing, good air tightness of the shell is guaranteed, and air leakage loss of the shell is reduced.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to a low-resistance combustion-promoting secondary fan structure. Background technique [0002] The secondary fan is a supplementary measure to improve the combustion quality and an adjustment channel to improve the combustion efficiency. As long as oxygen is supplemented after the flame, the secondary fan is currently an indispensable part of the stable combustion-supporting effect. The demand is also increasing. The secondary fan is specially matched with the primary fan. The air volume adjustment and ratio between them is the key to the boiler combustion technology. The secondary fan plays a great role in supporting combustion. [0003] China Patent Authorization Announcement No.: CN205261617U, authorized announcement date of May 25, 2016, discloses a secondary fan structure of a boiler, including a gas collecting port, a box body, a secondary fan and an air supply pipe, and the ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D29/42F04D29/08F04D29/02F04D29/70F04D29/056F04D29/58F04D29/62F23L9/00
CPCF04D25/08F04D29/4226F04D29/083F04D29/023F04D29/703F04D29/056F04D29/582F04D29/624F23L9/00Y02E20/34
Inventor 胡炎峰张银华周伯年
Owner 余姚风机总厂有限公司
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