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Flow distribution control method of high-rise building central flue system

A flue system and flow distribution technology, applied in the direction of heating, oil fume removal, vertical pipes, etc., can solve the problems of high energy consumption, low efficiency and energy saving, etc., achieve less loss, eliminate the difference in smoke exhaust effect, and control the process efficiently Effect

Active Publication Date: 2020-05-26
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that this kind of control method achieves balanced flow adjustment by increasing the resistance at the outlet, and the energy consumption is relatively large, which is not efficient enough and energy-saving.

Method used

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  • Flow distribution control method of high-rise building central flue system
  • Flow distribution control method of high-rise building central flue system
  • Flow distribution control method of high-rise building central flue system

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0048] Such as figure 1 and figure 2 As shown, range hoods with the same gear have different outlet resistances on different floors, and the actual air volume is also different. The relationship between air volume and power or current can be obtained by fitting a cubic function, and the range hood at different gears or frequencies can be The P-Q-N (static pressure, flow, power) values ​​are measured on the air volume test bench, and the fitting function or matrix table is built into the memory chip. Take a range hood with two gears as an example, any gear such as figure 1 As shown, the corresponding relationship between its flow and power (or current) is unique, and the test value can be used in the range of positive numbers. N i =A i +B i Q+c i Q 2 +d i Q 3 fit expression. Such as figure 2 As shown, and the PQ curve corresponding...

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Abstract

The invention discloses a flow distribution control method of a high-rise building central flue system. The central flue system comprises indoor units installed on different floors, an air outlet of each indoor unit communicates with a public flue through a corresponding smoke pipe, a target flow QL is preset in the target range [Qx, Qd] or within, and motors of the indoor units have currents or power detecting modules are arranged on the motors of the indoor units. The flow distribution control method of the high-rise building uses current gears of range hoods or the currents for detection, acurrent actual flow is calculated, the difference between the current flow and the target flow is calculated, and the gears of the motors are selected and adjusted, so that the current flow is controlled in the target flow range, the whole control method can realize basic guarantee of the effective air volume, the smoke exhaust effect difference of the different floors is eliminated, control is conducted through frequency conversion or gear shifting control of the indoor range hoods, the control process is efficient, saves energy and is low in loss.

Description

technical field [0001] The invention relates to a central flue system, in particular to a flow distribution control method for the central flue system of a high-rise building. Background technique [0002] At present, the floors of newly-built buildings in cities are generally higher and higher, and are mainly decorated with engineering. Most high-rise residences use indoor range hoods, smoke pipes, check valves and public flues to connect, so that the cooking fumes in the kitchen can pass through the indoor exhaust pipes. The power range hood is discharged into the public flue through the smoke pipe. Since the outlet of the high-rise public flue is generally set at the top, the switch of the range hood at the user's home will affect the system outlet resistance. The increase in the distance of the flue will increase the loss along the way, and the exhaust of the range hood upstairs will cause the smoke exhaust resistance downstairs. The increase makes the pressure distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20E04F17/02
CPCE04F17/02F24C15/2021
Inventor 何立博
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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