A ventilation device with multi-point uniform flow and its method
An air extraction device and uniform technology, applied in ventilation systems, heating methods, space heating and ventilation, etc., can solve problems such as difficulty in adjusting the flow to the required value, mutual influence of air flow characteristic indicators, etc., to achieve high adjustment accuracy, The effect of stable technical parameters
Inactive Publication Date: 2018-10-09
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
It solves the problem that the non-linear interaction between various air flow characteristic indexes in the prior art makes it difficult to evenly adjust the flow in each independent branch to the required value
Method used
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[0028] figure 1 It is a schematic structural diagram of the prior art, and the specific technical solution is described in the background art.
[0029] like Figures 2 to 5 shown. A ventilation device with multi-point uniform flow, including a ventilation duct 25, and a plurality of exhaust hoods 26 connected to the ventilation duct 25 through pipelines; , independent branch pipe 21, exhaust hood 26;
[0030] The quantity of described independent branch pipe 21 is many, and the C end of each independent branch pipe 21 is respectively connected with an independent branch pipe damping joint 31 of static pressure box 22, and B end is respectively connected with an exhaust hood 26; Every independent branch pipe 21 is Rectangular ducts with the same cross-section;
[0031] The air flow path of the plenum box 22 is provided with a negative pressure chamber 35, an equalizing plate 34 and an isobaric chamber 33 in sequence; the independent branch pipe damping joints 31 of the plen...
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The invention discloses a multi-point uniform-flow air draft device and a method thereof. The multi-point uniform-flow air draft device comprises an air draft pipe and a plurality of exhaust hoods, wherein the exhaust hoods are connected to the air draft pipe through pipelines; the air draft pipe is sequentially connected with a header pipe air volume adjusting valve, a static pressure box, a plurality of independent branch pipes and the exhaust hoods; an end C of each independent branch pipe is connected with a corresponding independent branch pipe damping joint of the static pressure box; an end B of each independent branch pipe is connected with the corresponding exhaust hood; the independent branch pipes are rectangular air ducts with the same cross section; a negative pressure bin, a balance plate and a constant pressure bin are sequentially arranged on an air flow channel of the static pressure box; and the independent branch pipe damping joints of the static pressure box are uniformly arranged along the periphery of the constant pressure bin. The problem that F1=F2=...=Fn=Fs is difficult to realize in the prior art can be solved quite easily with the aid of the pressure balancing effect of the static pressure box and the damping effect of a damping ring and by adjustment of the header pipe air volume adjusting valve.
Description
technical field [0001] The invention relates to the field of industrial ventilation, in particular to a ventilation device with multi-point uniform flow and a method thereof. Background technique [0002] In the field of industrial ventilation in factories, there are often the following situations: there are N identical workbenches in a certain workshop, and their respective actual exhaust air volumes are: F1, F2, ..., Fn; because of the process, etc. Restricted by the conditions, it is required that the N exhaust air volumes all have a certain required value Fs. That is to say: F1=F2=...=Fn=Fs; this is the ventilation system required by multi-point uniform flow. For example: A chemical fiber factory has a workshop with N sets of the same drawing machine. If the air volume is not enough, the smoke from chemical fiber drawing will not be cleaned. If the air volume is too large and the suction speed is too high, the adjacent chemical fiber yarns will be blown Mutual sticking...
Claims
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IPC IPC(8): F24F7/06F24F11/74
CPCF24F7/06F24F11/30F24F11/77F24F11/84F24F2110/00F24F2110/40Y02B30/70
Inventor 容强
Owner SOUTH CHINA UNIV OF TECH