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Range hood and constant air volume adjustment method and system thereof

A constant air volume and adjustment method technology, applied in the direction of oil fume removal, heating methods, household heating, etc., can solve the problem of self-adaptive adjustment and output constant air volume, to achieve the effect of ensuring the effect and constant output air volume

Active Publication Date: 2018-03-30
GUANGDONG WELLING ELECTRIC MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Based on this, it is necessary to provide a constant air volume adjustment method for range hoods to solve the problem that the output constant air volume cannot be adaptively adjusted according to the actual wind pressure range

Method used

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  • Range hood and constant air volume adjustment method and system thereof
  • Range hood and constant air volume adjustment method and system thereof
  • Range hood and constant air volume adjustment method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: only adopt the operating current I in the operating parameters of the motor to establish the air volume model:

[0028] Real-time air volume Q=C0×I+C1×I 2 +C2×I 3 ;

[0029] In the above formula, I is the operating current of the motor (that is, the bus current), and the preset parameters C0, C1, and C2 can be obtained by fitting the air volume and operating current I under different static pressures.

Embodiment 2

[0030] Embodiment 2: Using the motor running speed n and running current I to establish an air volume model:

[0031] Real-time air volume Q=C0×I+C1×n×I;

[0032] Or Q=C0×n+C1×I 2 +C2×I 2 ×n 2 +C3×n 3 ;

[0033] In the above formula, I is the operating current of the motor, n is the operating speed of the motor, and the preset parameters C0, C1, C2, and C3 can be obtained by fitting the air volume and operating parameter data under different static pressures.

Embodiment 3

[0034] Embodiment 3: Only the operating speed n, operating voltage u among the operating parameters of the motor and the winding resistance R, winding inductance L, winding pole pair number p, and back EMF coefficient ke of the motor body parameters are used to establish the air volume model.

[0035] by the formula: u 2 =(k e ×n+ωL d i d ) 2 +(ωL q i q ) 2 ;

[0036] ω=2πpn / 60;

[0037] Among them, among the commonly used surface mount motors: L q = L; L q is the q-axis inductance; L d is the d-axis inductance; i d is the d-axis current; i q is the q-axis current; ω is the angular velocity of the motor.

[0038] In vector control i d =0 control mode can get:

[0039] I=(i 2 d + i 2 q ) 1 / 2 = i q ;

[0040] u 2 =(k e ×n) 2 +(ωL q i q ) 2 ;

[0041] I=g(u,n,L,R)=(u 2 -(k e ×n) 2 ) / (ωL)=(u 2 -(k e ×n) 2 ) / (2πpnL / 60);

[0042] The air volume model formula can be obtained:

[0043] Q=f(u,n,L,R)=C0×g 2 (u,n,L,R)+C1×g 3 (u,n,L,R);

[0044] The...

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PUM

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Abstract

A method and system for adjusting a constant air volume of a range hood, the system comprising: a detection unit for detecting motor parameters in the range hood; an air volume monitoring unit for obtaining the real-time air volume of the exhaust port of the range hood according to the motor parameters; The control unit is used to adjust the parameters of the motor through the inverter to keep the real-time air volume constant. Obtain the motor parameters and calculate the current air volume value, and then feed back the monitored real-time air volume to the control unit, so that the control unit can adjust the motor speed or current according to the real-time air volume, so as to achieve the purpose of adjusting the real-time air volume and ensure a constant output air volume. Effect.

Description

technical field [0001] The invention belongs to the field of home appliances, and in particular relates to a range hood and its constant air volume adjustment method and system. Background technique [0002] At present, with the difference of people's living environment, kitchen exhaust pipes are diversified. There is a rural style of open smoke exhaust, and most of the middle and high-rise building users in the community use public flues to exhaust smoke. Among the household users in middle and high-rise buildings, when the low-level users exhaust air to the public flue, the high-rise users are subject to relatively large wind pressure, which makes the effect of high-level oil fume exhaust worse. And when the high-level air is exhausted, the low-level users need a lower speed to exhaust the oil fume normally, and the energy consumption is small. Traditional range hoods cannot be automatically adjusted according to the needs of users on different floors. [0003] In diffe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
Inventor 柯文静金万兵
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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