CN105674358A

CN105674358A - Control device and method for range hood and range hood

Info

Publication number: CN105674358A
Application number: CN201410665202.8A
Authority: CN
Inventors: 杨磊; 刘卫岳
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2016-06-15
Anticipated expiration: 2034-11-19
Also published as: CN105674358B

Abstract

The invention provides novel improvement of a range hood and a control method and device for the range hood. The range hood provided by the invention comprises a motor and an impeller driven by the motor and further comprises an extreme mode selecting device, and the extreme mode selecting device stores control commands corresponding to the motor when the value of air volume reaches or is the nearest to a preset lower limit air volume threshold value under different working conditions. The extreme mode selecting device is further used for determining user working conditions, selecting the stored control commands corresponding to the motor when the value of air volume reaches or is the nearest to the preset lower limit air volume threshold value under the user working conditions and storing and/or operating the selected control commands. By means of the technical scheme, the range hood can be controlled on the basis of the user working conditions.

Description

For the control device of smoke exhaust ventilator, smoke exhaust ventilator and control method thereof

[technical field]

The present invention relates to smoke exhaust ventilator field, for the control device field of smoke exhaust ventilator, and the control method field of smoke exhaust ventilator.

[background technology]

Existing smoke exhaust ventilator, is generally provided with driving switch, carries out the selection of shelves position for user. Due to each shelves position electric machine control instruction corresponding respectively be setting in advance, do not consider the user working condition of smoke exhaust ventilator under practical service environment; Thus, existing driving switch and user's working condition can not the situation of good match happen occasionally.

Unless there are the evidence support of abundance, otherwise prior art described here not meaning that admits that these prior aries those of ordinary skill public affairs for the field that the invention relates to before the applying date of the application are known.

[summary of the invention]

The main purpose of the present invention is, for for the control device of smoke exhaust ventilator, smoke exhaust ventilator and control method thereof, it is proposed to new improvement.

The smoke exhaust ventilator that the present invention proposes, comprise motor and by described motor-driven impeller, also comprise limit mode selector, its store air quantity under different working conditions be in or closest to one set in advance air quantity lower limit valve value time steering order corresponding to described motor; Described limit mode selector, also for determining user's working condition, choose air quantity under this user's working condition stored to be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance, and store and/or run this steering order chosen. Here, the environment for use that what " different working conditions " reflected is smoke exhaust ventilator is different. What " user's working condition " reflected is then environment for use actual after application installed by smoke exhaust ventilator. So-called " choose air quantity under this user's working condition stored be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance ", can be understood as: if described limit mode selector store air quantity under this user's working condition be in described in set in advance air quantity lower limit valve value time steering order corresponding to described motor, then choose this steering order;Otherwise, under choosing this user's working condition stored, air quantity is closest to the steering order corresponding to described motor during the described air quantity lower limit valve value set in advance. Adopt the technical scheme of the present invention, it may be achieved control smoke exhaust ventilator based on user's working condition.

Optionally, described motor adopts stepless time adjustment motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value; Described air quantity solving obtains by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Optionally, described motor adopts stepless time adjustment motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value; Described air quantity solving obtains by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described rotating speed solving obtains by the following method: send described experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current rotating speed point, go out to be not less than the rotating speed solving on 3 rank with least square fitting; Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Optionally, described motor adopts stepless time adjustment motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value;Described air quantity solving obtains by the following method: control described motor at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described limit mode selector, also for controlling described motor under user's working condition at described constant tachometer value n₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Optionally, described motor adopts fixed gear position speed governing motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value; Described air quantity solving obtains by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running. That is, control described motor to operate under such shelves position instruction: this grade of position instruction is immediate with the steering order corresponding to this intersection point in each shelves position instruction. Here, " instruction of shelves position " be interpreted as: the described steering order stored. Expression identical below, please do same understanding.

Optionally, described motor adopts fixed gear position speed governing motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value; Described air quantity solving obtains by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described rotating speed solving obtains by the following method: send described experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current rotating speed point, go out to be not less than the rotating speed solving on 3 rank with least square fitting;Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

Optionally, described motor adopts fixed gear position speed governing motor; Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value; Described air quantity solving obtains by the following method: control described motor at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting; Described limit mode selector, also for controlling described motor under user's working condition at described constant tachometer value n₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described constant tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

Optionally, described limit mode selector also comprises trip switch portion, for controlling described limit mode selector for user.

Optionally, described smoke exhaust ventilator also comprises adjusting portion, when operating under the control of described limit mode selector for described motor, regulates the steering order of described motor further for user. Like this, it is convenient to manually revise the steering order selected by described limit mode selector.

Optionally, described adjusting portion adopts contactor control device or knob or button.

Optionally, driving switch is also comprised. Like this, user, based on the needs of oneself, both can select, by driving switch, smoke exhaust ventilator is carried out common control, it is also possible to selects the control that smoke exhaust ventilator is undertaken match user working condition by described limit mode selector.

Optionally, described limit mode selector also comprises man-machine interaction portion, for for artificial input and/or the information revising and/or deleting described storage.

Optionally, described limit mode selector, stores when air quantity under different working conditions is at least two air quantity lower limit valve values set in advance and is distinguished corresponding electric machine control instruction; Described limit mode selector also comprises man-machine interaction portion, for for making artificial selection in described at least two the air quantity lower limit valve values set in advance. By man-machine interaction portion in described at least two the air quantity lower limit valve values set in advance after certain air quantity lower limit valve value of artificial selection, after determining user's working condition further, electric machine control instruction corresponding when air quantity is in the air quantity lower limit valve value set in advance of this selection under this user's working condition stored, will become the electric machine control instruction being selected.

The present invention also proposes a kind of control device for smoke exhaust ventilator, and it is provided with the limit mode selector that the smoke exhaust ventilator as described in above arbitrary item adopts.

The present invention also proposes a kind of control method of smoke exhaust ventilator, and described smoke exhaust ventilator comprises motor and by described motor-driven impeller, comprises the following steps:

Store air quantity under different working conditions be in or closest to one set in advance air quantity lower limit valve value time steering order corresponding to described motor;

Determine user's working condition, choose air quantity under this user's working condition stored and be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance, and store and/or run this steering order chosen. Here, the environment for use that what " different working conditions " reflected is smoke exhaust ventilator is different. What " user's working condition " reflected is then the environment for use that the rear smoke exhaust ventilator reality of application installed by smoke exhaust ventilator. So-called " choose air quantity under this user's working condition stored be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance ", can be understood as: if described limit mode selector store air quantity under this user's working condition be in described in set in advance air quantity lower limit valve value time steering order corresponding to described motor, then choose this steering order; Otherwise, under choosing this user's working condition stored, air quantity is closest to the steering order corresponding to described motor during the described air quantity lower limit valve value set in advance. Adopt the technical scheme of the present invention, it may be achieved control smoke exhaust ventilator based on user's working condition.

Optionally, described motor adopts stepless time adjustment motor, also comprises the following steps:

Store following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and solve the air quantity solving of airflow value based on current value;

Obtain described air quantity solving by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

Under user's working condition, input described experiment control instruction to described motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Store following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value;

Obtain described rotating speed solving by the following method: send described experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current rotating speed point, go out to be not less than the rotating speed solving on 3 rank with least square fitting;

Under user's working condition, input described experiment control instruction to described motor, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Obtain described air quantity solving by the following method: control described motor at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

Described motor is controlled at described constant tachometer value n under user's working condition₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

Optionally, described motor adopts fixed gear position speed governing motor, also comprises the following steps:

Under user's working condition, input described experiment control instruction to described motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

Under user's working condition, input described experiment control instruction to described motor, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

Described motor is controlled at described constant tachometer value n under user's working condition₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described constant tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

Optionally, described smoke exhaust ventilator comprises man-machine interaction portion, also comprises the following steps: is manually inputted by described man-machine interaction portion and/or revises and/or delete the information of described storage.

Optionally, described smoke exhaust ventilator comprises man-machine interaction portion, also comprises the following steps:

Store when air quantity under different working conditions is at least two air quantity lower limit valve values set in advance and distinguished corresponding electric machine control instruction;

In described at least two the air quantity lower limit valve values set in advance, artificial selection is made by described man-machine interaction portion. By man-machine interaction portion in described at least two the air quantity lower limit valve values set in advance after certain air quantity lower limit valve value of artificial selection, after determining user's working condition further, electric machine control instruction corresponding when air quantity is in the air quantity lower limit valve value set in advance of this selection under this user's working condition stored, will become the electric machine control instruction being selected.

The foregoing invention content of the present invention is not all possible enforcement modes for describing the present invention.In whole application, by enumerating, example provides guidance in many places, and these examples may be used for various feasible combination.

[accompanying drawing explanation]

The present invention is only made schematic description and interpretation by the following drawings, not delimit the scope of the invention, wherein:

Fig. 1 be a kind of smoke exhaust ventilator embodiment of the present invention and the control embodiment of the method for a kind of smoke exhaust ventilator adopt noise noise, air quantity Q, motor rotating speed n tri-technical parameters isogram;

Fig. 2 is the structural representation of the control device of a kind of smoke exhaust ventilator embodiment of the present invention;

Fig. 3 is the structural representation of the control device of another kind of smoke exhaust ventilator embodiment of the present invention;

Fig. 4 be another smoke exhaust ventilator embodiment of the present invention and the control embodiment of the method for a kind of smoke exhaust ventilator adopt noise noise, air quantity Q, motor rotating speed n tri-technical parameters isogram;

Fig. 5 is the schema of the control embodiment of the method for a kind of smoke exhaust ventilator of the present invention.

Reference numeral:

1-power switch, 2-driving switch, 3-display portion, 4-starting switch, 5-adjusting portion, 6-limit mode selection switch.

[embodiment]

For making the object of the present invention, scheme and useful effect clearly understand, below in conjunction with accompanying drawing and preferred embodiment, the invention will be further described. Indivedual accompanying drawing may be accurate not, in this kind of situation, is please as the criterion with text description.

Embodiment 1

A kind of smoke exhaust ventilator embodiment that the present invention proposes, comprises control device, motor and by this motor-driven impeller. Motor adopts stepless time adjustment motor, specifically can adopt DC brushless motor. Control device comprises power switch 1, driving switch 2, display portion 3, limit mode selector and adjusting portion 5. Limit mode selector comprises trip switch portion, and this trip switch portion is used for for user's control limit mode selector. Trip switch portion comprises a starting switch 4, as shown in Figure 2. After power switch 1 is closed by user, then control device energising; After power switch 1 is disconnected by user, then control device power-off. Driving switch 2 comprises three alternative common shelves positions, as shown in Figure 2, corresponds respectively to high, medium and low three shelves positions. Driving switch 2, for smoke exhaust ventilator being carried out conventional shelves position control for user, user's working condition is not considered in the control in this kind of situation.

Limit mode selector, its store this smoke exhaust ventilator air quantity under different working conditions be in one set in advance air quantity lower limit valve value time steering order corresponding to motor. Specifically, before smoke exhaust ventilator dispatches from the factory, in the limit following information of mode selector store: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value. The isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, as shown in Figure 1, the X-coordinate of this isogram is motor rotating speed n, and ordinate zou is air quantity Q, and the technical parameter that in figure, the upper left corner indicates is then noise noise. In Fig. 1, the straight line indicated by arrow A is that under each rotating speed, the outlet back pressure of this smoke exhaust ventilator is air quantity line during 0Pa. The isopleth of the air quantity lower limit valve value set in advance, shown in the curve as indicated by the arrow D in Fig. 1. Air quantity solving obtains by the following method: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 4 rank with least square fitting: a_q4i⁴+a_q3i³+a_q2i²+a_q1i+a_q0=Q, wherein, i is current of electric, and Q is air quantity, a_q0、a_q1、a_q2、a_q3、a_q4It it is the coefficient of this equation.

After application installed by smoke exhaust ventilator, if user closes starting switch 4, limit mode selector will run, and realize following functions: determine user's working condition, and the steering order corresponding to motor stored when air quantity is in the air quantity lower limit valve value set in advance under determining this user's working condition, and control the steering order that motor performs this and chooses. Specifically, after application installed by smoke exhaust ventilator, if user closes starting switch 4, limit mode selector will run, and realize following functions: input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on this current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line B (dotted line indicated by arrow B in straight line B and Fig. 1), the isopleth of this straight line B and the air quantity lower limit valve value set in advance has an intersection point (in this intersection point and Fig. 1 that intersection point being circled) indicated by " best air quantity shelves " arrow, then, control motor to operate under the steering order corresponding to this intersection point. Display portion 3, then for showing the rotating speed of motor when motor operates under the steering order corresponding to this intersection point.

Adjusting portion 5 adopts knob structure, as shown in Figure 2. Adjusting portion 5, when operating under the control of limit mode selector for motor, regulates the steering order of motor further for user. Two arrows in adjusting portion 5 in Fig. 2, represent two kinds of possible sense of rotation of adjusting portion 5 respectively, correspond respectively to the rotating speed increasing motor and reduce the rotating speed of motor.

Here needing to be explained, the present invention, based on the describing mode of isogram, is the summary of the image to technical solution of the present invention. In fact, when the technical scheme of specific implementation the present invention, at least in part utilization software is realized, the pattern of writing of software itself and the restriction of operational mode must be subject to, therefore, the isopleth or straight line B etc. of isogram, air quantity lower limit valve value during specific implementation, must do not drawn out.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. As, it is also possible to it is that trip switch portion comprises a starting switch 4 and a limit mode selection switch 6, as shown in Figure 3. After application installed by smoke exhaust ventilator, if user closes starting switch 4, then limit mode selector will run, and realize following functions: under user's working condition, input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, stores the steering order corresponding to this intersection point. After application installed by smoke exhaust ventilator, if the closed limit mode selection switch 6 of user, then limit mode selector will run, and realize following functions: control motor operates under the steering order corresponding to the described intersection point stored. For another example, the air quantity solving gone out by least square fitting, it is also possible to be 3 rank, 5 rank, 6 rank or more high-order., it is also possible to be, for another example adjusting portion adopts contactor control device or button. For another example, motor also can adopt the stepless time adjustment motor of other types, and is not limited with DC brushless motor. For another example, smoke exhaust ventilator dispatch from the factory before in the information of limit mode selector store, it is also possible to stored again after smoke exhaust ventilator dispatches from the factory. For another example, it is also possible for saving adjusting portion. For another example, if finding after determining user's working condition, limit mode selector does not store and is somebody's turn to do " the user's working condition determined ", in this kind of situation, the user working condition the most close with this " the user's working condition determined " stored by limit mode selector is considered as this " the user's working condition determined ". For another example, the method for drafting of Fig. 1 cathetus B is not limited with method described in the present embodiment.

Embodiment 2

The present invention also proposes another kind of smoke exhaust ventilator embodiment 2, and this smoke exhaust ventilator embodiment 2 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 1 and obtained. This smoke exhaust ventilator embodiment 2 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 1.

Before smoke exhaust ventilator dispatches from the factory, in the limit following information of mode selector store: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value.

Rotating speed solving obtains by the following method: send experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, it is that 0Pa is to maximum static pressure point from static pressure, obtain discrete electric current rotating speed point, go out the rotating speed solving on 4 rank with least square fitting: a_n4i⁴+a_n3i³+a_n2i²+a_n1i+a_n0=n, wherein, i is current of electric, and n is motor rotating speed, a_n0、a_n1、a_n2、a_n3、a_n4It it is the coefficient of this equation.

After application installed by smoke exhaust ventilator, if user closes starting switch, limit mode selector will run, and realize following functions: input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, and then, control motor operates under the steering order corresponding to this intersection point.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 2, refer to the corresponding description of smoke exhaust ventilator embodiment 1.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. Such as, the rotating speed solving gone out by least square fitting, it is also possible to be 3 rank, 5 rank, 6 rank or more high-order.

Embodiment 3

The present invention also proposes another kind of smoke exhaust ventilator embodiment 3, and this smoke exhaust ventilator embodiment 3 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 1 and obtained. This smoke exhaust ventilator embodiment 3 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 1.

Before smoke exhaust ventilator dispatches from the factory, in the limit following information of mode selector store: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value.

Air quantity solving obtains by the following method: control motor is at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out, with least square fitting, the air quantity solving that is not less than 3 rank.

After application installed by smoke exhaust ventilator, if the closed starting switch of user, limit mode selector will run, and realize following functions: control motor is at above-mentioned constant tachometer value n₀Lower running, and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on above-mentioned constant tachometer value n₀With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, and then, control motor operates under the steering order corresponding to this intersection point.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 3, refer to the corresponding description of smoke exhaust ventilator embodiment 1.

Embodiment 4

The present invention also proposes another kind of smoke exhaust ventilator embodiment 4, and this smoke exhaust ventilator embodiment 4 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 1 and obtained. This smoke exhaust ventilator embodiment 4 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 1.

The motor of this smoke exhaust ventilator embodiment 4, adopts fixed gear position speed governing motor.

Limit mode selector, stores air quantity under different working conditions closest to steering order corresponding to motor during the air quantity lower limit valve value set in advance. That is, in limit mode selector, the electric machine control instruction of an air quantity closest to the air quantity lower limit valve value set in advance is all stored under often kind of working condition. Limit mode selector, also for determining user's working condition, under choosing this user's working condition stored, air quantity is closest to the steering order corresponding to motor during the described air quantity lower limit valve value set in advance, and runs the steering order that this is chosen.

Air quantity solving obtains by the following method: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 5 rank with least square fitting.

After application installed by smoke exhaust ventilator, if user closes starting switch, limit mode selector will run, and realize following functions: input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line B (dotted line indicated by arrow B in straight line B and Fig. 4), the isopleth of this straight line B and the air quantity lower limit valve value set in advance has an intersection point (intersection point of the curve indicated by this intersection point and Fig. 4 cathetus B and arrow D), control motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under operate.Specifically, the all shelves position instructions under user's working condition that this smoke exhaust ventilator embodiment stores are corresponding to the multiple points being distributed on straight line B, wherein, it is the point indicated by arrow X with the immediate point of this intersection point, as shown in Figure 4, then, control motor to operate under the shelves position instruction corresponding to the point indicated by arrow X. Easily speech, all shelves position instructions under user's working condition that this smoke exhaust ventilator embodiment stores are corresponding to the multiple points being distributed on straight line B, and control motor operates under shelves position instruction corresponding to that point immediate with above-mentioned intersection point in this multiple point.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 4, refer to the corresponding description of smoke exhaust ventilator embodiment 1.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. As, point immediate with this intersection point, not must get the point indicated by arrow X, it is also possible to be other point. For another example, also it is likely, namely the steering order corresponding to intersection point of the straight line B in Fig. 4 and the curve indicated by arrow D itself is the shelves position instruction that limit mode selector stores, in this kind of situation, control motor operates under the steering order corresponding to this intersection point, is about to " immediate shelves position instruction " and is interpreted as the steering order corresponding to this intersection point.

Embodiment 5

The present invention also proposes another kind of smoke exhaust ventilator embodiment 5, and this smoke exhaust ventilator embodiment 5 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 4 and obtained. This smoke exhaust ventilator embodiment 5 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 4.

Limit mode selector stores following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value.

Air quantity solving obtains by the following method: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 3 rank with least square fitting.

Rotating speed solving obtains by the following method: send experiment control instruction (this experiment control instruction is identical with the above-mentioned experiment control instruction adopted when obtaining air quantity solving) to motor, it is that 0Pa is to maximum static pressure point from static pressure, obtain discrete electric current rotating speed point, go out the rotating speed solving on 3 rank with least square fitting.

After application installed by smoke exhaust ventilator, if user closes starting switch, limit mode selector will run, and realize following functions: input experiment control instruction (this experiment control instruction is identical with the above-mentioned experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, then, control motor with running under the immediate shelves position instruction of the steering order corresponding to this intersection point.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 5, refer to the corresponding description of smoke exhaust ventilator embodiment 4.

Embodiment 6

The present invention also proposes another kind of smoke exhaust ventilator embodiment 6, and this smoke exhaust ventilator embodiment 6 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 4 and obtained. This smoke exhaust ventilator embodiment 6 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 4.

Limit mode selector stores following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value;

Air quantity solving obtains by the following method: control motor is at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out, with least square fitting, the air quantity solving that is not less than 3 rank;

After application installed by smoke exhaust ventilator, if the closed starting switch of user, limit mode selector will run, and realize following functions: control motor is at constant tachometer value n₀Lower running (this constant tachometer value n₀With the above-mentioned constant tachometer value n adopted when obtaining air quantity solving₀Identical), and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on the tachometer value n that this is constant₀With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, then, control motor with running under the immediate shelves position instruction of the steering order corresponding to this intersection point.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 6, refer to the corresponding description of smoke exhaust ventilator embodiment 4.

Embodiment 7

The present invention also proposes another kind of smoke exhaust ventilator embodiment 7, and this smoke exhaust ventilator embodiment 7 is improved further on the basis of above-mentioned smoke exhaust ventilator embodiment 1 and obtained. This smoke exhaust ventilator embodiment 7 is as follows with the key distinction of above-mentioned smoke exhaust ventilator embodiment 1.

Limit mode selector also comprises man-machine interaction portion, and this man-machine interaction portion is used for for the air quantity lower limit valve value set in advance that artificially modifying stores. Such as, when the air quantity lower value that user can accept is higher than the air quantity lower limit valve value set in advance, just by this man-machine interaction portion, the air quantity lower limit valve value stored can be heightened; When the air quantity lower value that user can accept is lower than the air quantity lower limit valve value set in advance, just by man-machine interaction portion, the air quantity lower limit valve value stored can be turned down.

Correspondingly, limit mode selector, stores when air quantity under different working conditions is at least two air quantity lower limit valve values set in advance and is distinguished corresponding electric machine control instruction.

About other structures and the matching relationship of this smoke exhaust ventilator embodiment 7, refer to the corresponding description of smoke exhaust ventilator embodiment 1.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. as, can also be, man-machine interaction portion, for inputting and/or revise for artificial and/or delete the information at limit mode selector store, here " information " said, can be, for realizing the object of the present invention, need any information at limit mode selector store, such as, can be the noise noise of smoke exhaust ventilator, air quantity Q, the isogram of motor rotating speed n tri-technical parameters, and/or the isopleth of the air quantity lower limit valve value set in advance, and/or the rotating speed solving of tachometer value is solved based on current value, and/or based on current value air quantity solving solving airflow value etc.

Embodiment 8

The present invention also proposes the control embodiment of the method for a kind of smoke exhaust ventilator, this control method for smoke exhaust ventilator comprise motor and by this motor-driven impeller. The control embodiment of the method for this smoke exhaust ventilator, comprises the following steps:

Store air quantity under different working conditions be in or closest to one set in advance air quantity lower limit valve value time steering order corresponding to motor;

Determine user's working condition, choose air quantity under this user's working condition to be in or closest to the steering order corresponding to motor stored during the air quantity lower limit valve value set in advance, store the steering order that this is chosen, run this steering order chosen for transferring afterwards.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. As, it is also possible to it is that, after choosing the steering order corresponding to motor stored when air quantity under this user's working condition is in the air quantity lower limit valve value set in advance, directly control motor performs this steering order. For another example, if after determining user's working condition, find that limit mode selector does not store and it is somebody's turn to do " the user's working condition determined ", in this kind of situation, the user working condition the most close with this " the user's working condition determined " stored by limit mode selector is considered as this " the user's working condition determined ". For another example, air quantity lower limit valve value can be determined by trying the mode of wrong test.

Embodiment 9

The present invention also proposes the control embodiment of the method for another kind of smoke exhaust ventilator, this control embodiment of the method for smoke exhaust ventilator comprise motor and by this motor-driven impeller, this motor adopts stepless time adjustment motor. As shown in Figure 5, the control embodiment of the method for this smoke exhaust ventilator, comprises the following steps:

Store air quantity under different working conditions be in one set in advance air quantity lower limit valve value time steering order corresponding to motor, specifically, store following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth (this isopleth is positioned on isogram) of the air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value. The isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, as shown in Figure 1, the X-coordinate of this isogram is motor rotating speed n, and ordinate zou is air quantity Q, and the technical parameter that in figure, the upper left corner indicates is then noise noise. In Fig. 1, the straight line indicated by arrow A is the outlet back pressure of each rotating speed lower oil smoke exhaust machine is air quantity line during 0Pa. The isopleth of the air quantity lower limit valve value set in advance, shown in the curve as indicated by the arrow D in Fig. 1.

Air quantity solving obtains by the following method: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 4 rank with least square fitting: a_q4i⁴+a_q3i³+a_q2i²+a_q1i+a_q0=Q, wherein, i is current of electric,_QIt is air quantity, a_q0、a_q1、a_q2、a_q3、a_q4It it is the coefficient of this equation.

Determine user's working condition, and the steering order corresponding to motor stored when air quantity is in the air quantity lower limit valve value set in advance under determining this user's working condition, and control the steering order that motor performs this and chooses. Specifically, after application installed by smoke exhaust ventilator, input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor tachometer value n₁And corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line B (dotted line indicated by arrow B in straight line B and Fig. 1), the isopleth of this straight line B and the air quantity lower limit valve value set in advance has an intersection point (in this intersection point and Fig. 1 that intersection point being circled) indicated by " best air quantity shelves " arrow, then, control motor to operate under the steering order corresponding to this intersection point.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. Such as, the air quantity solving gone out by least square fitting, it is also possible to be 3 rank, 5 rank, 6 rank or more high-order. For another example, if after determining user's working condition, find that limit mode selector does not store and it is somebody's turn to do " the user's working condition determined ", in this kind of situation, the user working condition the most close with this " the user's working condition determined " stored by limit mode selector is considered as this " the user's working condition determined ". For another example, the method for drafting of Fig. 1 cathetus B is not limited with method described in the present embodiment.

Embodiment 10

The present invention also proposes the control embodiment of the method 10 of another kind of smoke exhaust ventilator, and the control embodiment of the method 10 of this smoke exhaust ventilator is improved further on the basis of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator and obtained. The control embodiment of the method 10 of this smoke exhaust ventilator is as follows with the key distinction of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator.

The control embodiment of the method 10 of this smoke exhaust ventilator, comprises the following steps:

Store following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value;

By the following method obtain air quantity solving: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 5 rank with least square fitting;

Obtain rotating speed solving by the following method: send experiment control instruction (this experiment control instruction is identical with the above-mentioned experiment control instruction adopted when obtaining air quantity solving) to motor, it is that 0Pa is to maximum static pressure point from static pressure, obtain discrete electric current rotating speed point, go out the rotating speed solving on 4 rank with least square fitting;

After application installed by smoke exhaust ventilator, input experiment control instruction (this experiment control instruction is identical with the above-mentioned experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, and then, control motor operates under the steering order corresponding to this intersection point.

About other structures of control embodiment of the method 10 and the matching relationship of this smoke exhaust ventilator, refer to the corresponding description of the control embodiment of the method 9 of smoke exhaust ventilator.

Embodiment 11

The present invention also proposes the control embodiment of the method 11 of another kind of smoke exhaust ventilator, and the control embodiment of the method 11 of this smoke exhaust ventilator is improved further on the basis of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator and obtained. The control embodiment of the method 11 of this smoke exhaust ventilator is as follows with the key distinction of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator.

The control embodiment of the method 11 of this smoke exhaust ventilator, comprises the following steps:

Store following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the air quantity lower limit valve value set in advance, and solve the air quantity solving of airflow value based on current value;

Obtain air quantity solving by the following method: control motor is at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out, with least square fitting, the air quantity solving that is not less than 3 rank;

After application installed by smoke exhaust ventilator, control motor is at constant tachometer value n₀Lower running (this constant tachometer value n₀With the above-mentioned constant tachometer value n adopted when obtaining air quantity solving₀Identical), and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on the tachometer value n that this is constant₀With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, and control motor operates under the steering order corresponding to this intersection point.

About other structures of control embodiment of the method 11 and the matching relationship of this smoke exhaust ventilator, refer to the corresponding description of the control embodiment of the method 9 of smoke exhaust ventilator.

Embodiment 12

The present invention also proposes the control embodiment of the method for another kind of smoke exhaust ventilator, this control embodiment of the method for smoke exhaust ventilator comprise motor and by this motor-driven impeller, this motor adopts fixed gear position speed governing motor. The control embodiment of the method for this smoke exhaust ventilator, comprises the following steps:

Store air quantity under different working conditions closest to one set in advance air quantity lower limit valve value time steering order corresponding to described motor. That is, in limit mode selector, the electric machine control instruction of an air quantity closest to the air quantity lower limit valve value set in advance is all stored under often kind of working condition.

Store following information: the isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth (this isopleth is positioned on isogram) of the air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value. The isogram of the noise noise of smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, as shown in Figure 4, the X-coordinate of this isogram is motor rotating speed n, and ordinate zou is air quantity Q, and the technical parameter that in figure, the upper left corner indicates is then noise noise. In Fig. 4, the straight line indicated by arrow A is the outlet back pressure of each rotating speed lower oil smoke exhaust machine is air quantity line during 0Pa. The isopleth of the air quantity lower limit valve value set in advance, shown in the curve as indicated by the arrow D in Fig. 4.

Air quantity solving obtains by the following method: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out the air quantity solving on 4 rank with least square fitting: a_q4i⁴+a_q3i³+a_q2i²+a_q1i+a_q0=Q, wherein, i is current of electric, and Q is air quantity, a_q0、a_q1、a_q2、a_q3、a_q4It it is the coefficient of this equation.

Determining user's working condition, under choosing this user's working condition stored, air quantity is closest to the steering order corresponding to described motor during the described air quantity lower limit valve value set in advance, and controls the steering order that motor performs this and chooses. Specifically, after application installed by smoke exhaust ventilator, input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect now corresponding tachometer value n₁And corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line B (dotted line indicated by arrow B in straight line B and Fig. 4), the isopleth of this straight line B and the air quantity lower limit valve value set in advance has an intersection point (intersection point of the curve indicated by this intersection point and Fig. 4 cathetus B and arrow D), then, control motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running. Specifically, the all shelves position instructions under user's working condition that this smoke exhaust ventilator embodiment stores are corresponding to the multiple points being distributed on straight line B, wherein, it is the point indicated by arrow X with the immediate point of this intersection point, as shown in Figure 4, then control motor to operate under the shelves position instruction corresponding to the point indicated by arrow X. Easily speech, all shelves position instructions under user's working condition that this smoke exhaust ventilator embodiment stores are corresponding to the multiple points being distributed on straight line B, and control motor operates under shelves position instruction corresponding to that point immediate with above-mentioned intersection point in this multiple point.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. Such as, the air quantity solving gone out by least square fitting, it is also possible to be 3 rank, 5 rank, 6 rank or more high-order. For another example, if after determining user's working condition, find that limit mode selector does not store and it is somebody's turn to do " the user's working condition determined ", in this kind of situation, the user working condition the most close with this " the user's working condition determined " stored by limit mode selector is considered as this " the user's working condition determined ". For another example, the method for drafting of Fig. 4 cathetus B is not limited with method described in the present embodiment. For another example, point immediate with described intersection point, not must get the point indicated by arrow X, it is also possible to be other point. For another example, also it is likely, namely the steering order corresponding to intersection point of the straight line B in Fig. 4 and the curve indicated by arrow D itself is the shelves position instruction that limit mode selector stores, in this kind of situation, control motor operates under the steering order corresponding to this intersection point, is about to " immediate shelves position instruction " and is interpreted as the steering order corresponding to this intersection point.

Embodiment 13

The present invention also proposes the control embodiment of the method 13 of another kind of smoke exhaust ventilator, and the control embodiment of the method 13 of this smoke exhaust ventilator is improved further on the basis of the control embodiment of the method 12 of above-mentioned smoke exhaust ventilator and obtained.The control embodiment of the method 13 of this smoke exhaust ventilator is as follows with the key distinction of the control embodiment of the method 12 of above-mentioned smoke exhaust ventilator.

The control embodiment of the method 13 of this smoke exhaust ventilator, comprises the following steps:

By the following method obtain air quantity solving: send an experiment control instruction to motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

Obtain rotating speed solving by the following method: send experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, it is that 0Pa is to maximum static pressure point from static pressure, obtain discrete electric current rotating speed point, go out the rotating speed solving on 4 rank with least square fitting: a_n4i⁴+a_n3i³+a_n2i²+a_n1i+a_n0=n, wherein, i is current of electric, and n is motor rotating speed, a_n0、a_n1、a_n2、a_n3、a_n4It it is the coefficient of this equation.

After application installed by smoke exhaust ventilator, input experiment control instruction (this experiment control instruction is identical with the experiment control instruction adopted when obtaining air quantity solving) to motor, and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on tachometer value n₁With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, control motor with running under the immediate shelves position instruction of the steering order corresponding to this intersection point.

About other structures of control embodiment of the method 13 and the matching relationship of this smoke exhaust ventilator, refer to the corresponding description of the control embodiment of the method 12 of smoke exhaust ventilator.

Embodiment 14

The present invention also proposes the control embodiment of the method 14 of another kind of smoke exhaust ventilator, and the control embodiment of the method 14 of this smoke exhaust ventilator is improved further on the basis of the control embodiment of the method 12 of above-mentioned smoke exhaust ventilator and obtained. The control embodiment of the method 14 of this smoke exhaust ventilator is as follows with the key distinction of the control embodiment of the method 12 of above-mentioned smoke exhaust ventilator.

The control embodiment of the method 14 of this smoke exhaust ventilator, comprises the following steps:

Obtain air quantity solving by the following method: control motor is at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

After application installed by smoke exhaust ventilator, control motor is at constant tachometer value n₀Lower running (this constant tachometer value n₀With the above-mentioned constant tachometer value n adopted when obtaining air quantity solving₀Identical), and detect corresponding motor current value i₁, based on current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on constant tachometer value n₀With airflow value Q₁Isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, this straight line has an intersection point with the isopleth of the air quantity lower limit valve value set in advance, control motor with running under the immediate shelves position instruction of the steering order corresponding to this intersection point.

About other structures of control embodiment of the method 14 and the matching relationship of this smoke exhaust ventilator, refer to the corresponding description of the control embodiment of the method 12 of smoke exhaust ventilator.

Embodiment 15

The present invention also proposes the control embodiment of the method 15 of another kind of smoke exhaust ventilator, and the control embodiment of the method 15 of this smoke exhaust ventilator is improved further on the basis of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator and obtained. The control embodiment of the method 15 of this smoke exhaust ventilator is as follows with the key distinction of the control embodiment of the method 9 of above-mentioned smoke exhaust ventilator.

This control embodiment of the method 15 for smoke exhaust ventilator comprise man-machine interaction portion.

The control embodiment of the method 15 of this smoke exhaust ventilator, comprises the following steps:

The air quantity lower limit valve value set in advance stored by man-machine interaction portion artificially modifying. Such as, when the air quantity lower value that user can accept is higher than the air quantity lower limit valve value set in advance, just by this man-machine interaction portion, the air quantity lower limit valve value stored can be heightened; When the air quantity lower value that user can accept is lower than the air quantity lower limit valve value set in advance, just by man-machine interaction portion, the air quantity lower limit valve value stored can be turned down.

Correspondingly, following information is also stored: when air quantity is at least two air quantity lower limit valve values set in advance under different working conditions, distinguished corresponding electric machine control instruction.

About other structures of control embodiment of the method 15 and the matching relationship of this smoke exhaust ventilator, refer to the corresponding description of the control embodiment of the method 9 of smoke exhaust ventilator.

Below it is only the preferred embodiments of the present invention, some technology feature is increased, deletes, revises or replace the embodiment that can also obtain other. as, can also be, manually inputted by man-machine interaction portion and/or revise and/or delete the information at limit mode selector store, here " information " said, can be, for realizing the object of the present invention, need any information at limit mode selector store, such as, can be the noise noise of smoke exhaust ventilator, air quantity Q, the isogram of motor rotating speed n tri-technical parameters, and/or the isopleth of the air quantity lower limit valve value set in advance, and/or the rotating speed solving of tachometer value is solved based on current value, and/or based on current value air quantity solving solving airflow value etc.

Needing additional instruction, the present invention should not be understood to be only limitted to enforcement mode described above, but should be understood to cover all possible performance that the claims in the present invention are determined in conjunction with specification sheets disclosure. Therefore, every content not departing from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to the technical spirit of the present invention, all belongs to the protection domain of technical solution of the present invention. Special needs to be pointed out is, any based on the present invention changes bad application, still belongs to the protection domain of technical solution of the present invention.

Claims

1. a smoke exhaust ventilator, comprises motor and by described motor-driven impeller, it is characterised in that:

Also comprise limit mode selector, its store air quantity under different working conditions be in or closest to one set in advance air quantity lower limit valve value time steering order corresponding to described motor;

Described limit mode selector, also for determining user's working condition, choose air quantity under this user's working condition stored to be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance, and store and/or run this steering order chosen.

2. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts stepless time adjustment motor;

Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, and the air quantity solving of airflow value is solved based on current value;

Described air quantity solving obtains by the following method: send an experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

3. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts stepless time adjustment motor;

Described limit mode selector stores following information: the isogram of the noise noise of described smoke exhaust ventilator, air quantity Q, motor rotating speed n tri-technical parameters, the isopleth of the described air quantity lower limit valve value set in advance, solve the rotating speed solving of tachometer value based on current value, and solve the air quantity solving of airflow value based on current value;

Described rotating speed solving obtains by the following method: send described experiment control instruction to described motor, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current rotating speed point, go out to be not less than the rotating speed solving on 3 rank with least square fitting;

Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

4. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts stepless time adjustment motor;

Described air quantity solving obtains by the following method: control described motor at a constant tachometer value n₀Lower running, from static pressure be 0Pa to maximum static pressure point, obtain discrete electric current air quantity point, go out to be not less than the air quantity solving on 3 rank with least square fitting;

Described limit mode selector, also for controlling described motor under user's working condition at described constant tachometer value n₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, controls described motor and operates under the steering order corresponding to this intersection point.

5. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts fixed gear position speed governing motor;

Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor tachometer value n₁And corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

6. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts fixed gear position speed governing motor;

Described limit mode selector, also for inputting described experiment control instruction to described motor under user's working condition, and detects corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described current value i₁Corresponding tachometer value n is obtained with rotating speed solving₁, based on described tachometer value n₁With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₁For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

7. smoke exhaust ventilator according to claim 1, it is characterised in that:

Described motor adopts fixed gear position speed governing motor;

Described limit mode selector, also for controlling described motor under user's working condition at described constant tachometer value n₀Lower running, and detect corresponding motor current value i₁, based on described current value i₁Corresponding airflow value Q is obtained with air quantity solving₁, based on described constant tachometer value n₀With described airflow value Q₁Described isogram is determined an operating mode point, through this operating mode point with Q₁/n₀For slope makes a straight line, the isopleth of this straight line and the described air quantity lower limit valve value set in advance has an intersection point, control described motor with the immediate shelves position instruction of the steering order corresponding to this intersection point under running.

8. smoke exhaust ventilator according to any one of claim 1 to 7, it is characterised in that:

Described limit mode selector also comprises trip switch portion, for controlling described limit mode selector for user.

9. smoke exhaust ventilator according to any one of claim 1 to 7, it is characterised in that:

Described smoke exhaust ventilator also comprises adjusting portion (5), when operating under the control of described limit mode selector for described motor, regulates the steering order of described motor further for user.

10. want the smoke exhaust ventilator described in 9 according to right, it is characterised in that:

Described adjusting portion (5) adopts contactor control device or knob or button.

11. smoke exhaust ventilators according to any one of claim 1 to 7, it is characterised in that:

Also comprise driving switch (2).

12. smoke exhaust ventilators according to any one of claim 1 to 7, it is characterised in that:

Described limit mode selector also comprises man-machine interaction portion, for for artificial input and/or the information revising and/or deleting described storage.

13. smoke exhaust ventilators according to any one of claim 1 to 7, it is characterised in that:

Described limit mode selector, stores when air quantity under different working conditions is at least two air quantity lower limit valve values set in advance and is distinguished corresponding electric machine control instruction;

Described limit mode selector also comprises man-machine interaction portion, for for making artificial selection in described at least two the air quantity lower limit valve values set in advance.

14. 1 kinds of control device for smoke exhaust ventilator, it is provided with the limit mode selector that smoke exhaust ventilator as in any one of the preceding claims adopts.

The control method of 15. 1 kinds of smoke exhaust ventilators, described smoke exhaust ventilator comprises motor and by described motor-driven impeller, it is characterised in that, comprise the following steps:

Determine user's working condition, choose air quantity under this user's working condition stored and be in or closest to steering order corresponding to described motor during the described air quantity lower limit valve value set in advance, and store and/or run this steering order chosen.

The control method of 16. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts stepless time adjustment motor, also comprises the following steps:

The control method of 17. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts stepless time adjustment motor, also comprises the following steps:

The control method of 18. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts stepless time adjustment motor, also comprises the following steps:

The control method of 19. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts fixed gear position speed governing motor, also comprises the following steps:

The control method of 20. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts fixed gear position speed governing motor, also comprises the following steps:

The control method of 21. smoke exhaust ventilators according to claim 15, it is characterised in that, described motor adopts fixed gear position speed governing motor, also comprises the following steps:

22. according to claim 15 to the control method of the smoke exhaust ventilator according to any one of 21, it is characterised in that, described smoke exhaust ventilator comprises man-machine interaction portion, also comprises the following steps:

Manually inputted by described man-machine interaction portion and/or revise and/or delete the information of described storage.

23. according to claim 15 to the control method of the smoke exhaust ventilator according to any one of 21, it is characterised in that, described smoke exhaust ventilator comprises man-machine interaction portion, also comprises the following steps:

In described at least two the air quantity lower limit valve values set in advance, artificial selection is made by described man-machine interaction portion.