Dry type ventiduct system with helical structure pipe and reflux-proof and fireproof throttle
A technology of spiral structure and ventilation pipe, applied in the direction of pipe layout, etc., can solve the problems of increasing installation time, installation cost, and complicated installation process, and achieve the effects of reducing the weight of attachments, large effective installation area, and low production cost
Inactive Publication Date: 2007-08-22
张乙钟
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Problems solved by technology
This structure requires the metal strip used to make rectangular piping to be cut in a certain interval, so the single length of the piping assembly is limited by the width of the metal strip raw material
As mentioned above, the above-mentioned plurality of piping components should be formed by joining the flange part of the wide end of the strip to continue its length, and the installation process is extremely complicated
When the width of the strip used as a component is relatively narrow, it is used as a channel of the same height, and there are more joint flanges, which greatly increases the installation time and installation cost.
Method used
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Embodiment Construction
[0022] The technology will be described in detail below in conjunction with the accompanying drawings: the anti-backflow and fire damper of the dry ventilation duct are used to quickly discharge the polluted air such as peculiar smell in the kitchen and bathroom of the apartment or townhouse to the outside. On the gas stove in the kitchen, install a hood for air capture and a ventilation fan on the ventilation pipe connected to the exhaust pipe, and set a ventilation fan on the ventilation pipe connected to the exhaust pipe on the ceiling or side wall of the bathroom, as shown in the figure 1: It is characterized in that the throttle valve 1 is directly installed on the exhaust pipe 16, and the dry ventilation pipe 7 in the kitchen or washroom of the apartment or multi-story public house is vertically connected with the exhaust pipe 16. On the exhaust pipe 16 where the two pipes intersect, there is an arc-shaped air inlet 13 slightly offset from the center of the pipe 16. This ...
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The invention discloses a bell-type microwave oven, which comprises the following parts: oven body, electric control chamber, cooking chamber, centrifugal fan, vent motor, convective fan and fan motor, wherein the electric control chamber is set on one side of oven body; the cooking chamber is set on the other side of oven body, which connects the first through-hole with the oven body space; the centrifugal fan and vent motor are set on the oven body back; the convective fan and fan motor are set between one side wall of cooking chamber and inner wall, which makes the hot air produce convection in the cooking chamber through the first through-hole; the segregation plate with the second through-hole is set in the space of convective fan and fan motor, which segregates the space of convective fan and fan motor from the back space for outside air in the oven body. The invention can discharge the inside air and introduce the outside air, which radiates fluidly to prevent fan motor from damaging due to overheat to the maximum degree.
Description
technical field [0001] The invention relates to facilities of an exhaust duct system of a residential building, in particular to a dry-type ventilation duct system with an anti-backflow and fire-proof damper arranged on a spiral exhaust pipe. Background technique [0002] Generally speaking, in public housing such as apartments or townhouses, the places that are prone to odor or polluted air are mainly kitchens and bathrooms. Therefore, it is necessary to quickly discharge the polluted air to create a comfortable living environment. Generally, on the gas stove in the kitchen, a smoke exhaust hood communicated with the ventilation duct is set, and a ventilation fan is set at the ventilation duct end on the ceiling or side wall of the bathroom. Usually the ventilation ducts of each floor are vertically connected with the exhaust pipes of each building, and the top of the exhaust pipes connected to the roof is provided with a perforated plate to prevent insects from invading an...
Claims
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IPC IPC(8): F24F13/02
Inventor 张乙钟
Owner 张乙钟