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A flow distribution control method for a central flue system in a high-rise building

A flue system and flow distribution technology, applied in the direction of heating, oil fume removal, vertical pipes, etc., can solve the problems of insufficient energy saving, high energy consumption, etc.

Active Publication Date: 2021-08-20
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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  • A flow distribution control method for a central flue system in a high-rise building
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  • A flow distribution control method for a central flue system in a high-rise building

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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, so 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 by 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 correspondin...

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Abstract

A flow distribution control method for the central flue system of a high-rise building. The central flue system includes indoor units installed on different floors. The air outlets of each indoor unit are connected to the public flue through their own smoke pipes. If the target flow QL is within the target flow range [Qx, Qd], the motor of the indoor unit has a current or power detection module. The flow distribution control method of this high-rise building uses the current range hood or current detection to calculate the current actual flow. Calculate the difference between the current actual flow and the target flow, and choose to adjust the gear of the motor so that the current actual flow is controlled within the target flow range. The whole control method can realize the basic guarantee of effective air volume and eliminate the difference in smoke exhaust effect of different floors, and through the frequency conversion or gear shift control of the indoor range hood, the control process is more efficient, energy-saving, and less 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 Patents(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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