CN112856526B - Air volume self-adaptive adjusting method of range hood and range hood - Google Patents
Air volume self-adaptive adjusting method of range hood and range hood Download PDFInfo
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- CN112856526B CN112856526B CN202110077425.2A CN202110077425A CN112856526B CN 112856526 B CN112856526 B CN 112856526B CN 202110077425 A CN202110077425 A CN 202110077425A CN 112856526 B CN112856526 B CN 112856526B
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- range hood
- fan
- check valve
- current
- air volume
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to an air volume self-adaptive adjusting method of a range hood, which initializes fan current I corresponding to different air volume gears I of a fan in the range hoodi(ii) a Detecting and acquiring opening angle threshold Z of check valve corresponding to different air volume gears i of range hood under the condition of no external air pressurei(ii) a In the working process of the range hood, acquiring the working air quantity gear i of the fan in real time, acquiring the corresponding opening angle Z of the check valve at the same time, and adjusting the working current of the fan until the opening angle of the check valve is restored to Zi. The air volume self-adaptive adjusting method of the range hood, disclosed by the invention, has the advantages that the opening angle threshold of the check valve is used as the standard for adjusting the current of the fan, the actual air volume compensation is effectively realized, the environmental applicability is strong, the implementation is convenient, and the influence of the air pressure of a common flue on the air exhaust volume of the range hood is solved by a simple means. The invention also relates to a range hood applying the method.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to an air volume self-adaptive adjusting method of a range hood, and the invention also relates to a range hood applying the method.
Background
Along with the continuous promotion of building floor height, the oil smoke that produces also more and more in public flue forms certain inside atmospheric pressure to indoor lampblack absorber air outlet intangibly, and this kind of atmospheric pressure can lead to the lampblack absorber to follow the ability decline that the air outlet discharged fume to the flue. This is why high-rise buildings are prone to common flue congestion. The problem of unsmooth smoke discharging of the range hood is solved, and a compensation current value is usually adopted to improve the rotating speed of the range hood and increase the output of effective air quantity.
For example, in the chinese utility model patent "an air volume and air pressure compensation system for range hood based on inverter motor" with the publication number CN203215815U, the disclosed solution indicates that the air volume loss caused by the environmental change is compensated by detecting the actual working current and rotation speed of the motor. However, how to obtain the preset air volume value according to the relationship among the current, the rotating speed and the air volume is not involved. For another example, in chinese patent application entitled publication No. CN103836692A, "range hood and air volume monitoring method and system", an air volume model is established according to parameters of a motor and operating parameters, and an air volume at an air outlet is calculated by means of the operating parameters and the parameters of the motor, which are obtained in real time, so as to control the motor to adjust the rotation speed. The method depends on the parameters and the operation parameters of the motor, and the common range hood has multi-gear adjustment conditions, so that the method is very unfavorable for establishing an effective air volume model, and particularly has higher difficulty for establishing a universal effective air volume model under the condition that a range hood manufacturer uses various motors of different types in the product production process. The invention discloses a method and a system for controlling the constant air volume of a range hood, which are patent No. CN 109028222A, wherein the scheme indicates that a compensation current value is obtained by formulating a relation table of static pressure, air volume, motor rotating speed and current and combining the air volume relation table according to actual detection current, so that the rotating speed and the air volume value are improved. Because the air quantity, the rotating speed and the static pressure are not in a linear relation, even if the correlation expression among the three can be obtained, the expression is also a multi-section high-power expression, the calculated quantity is large, and the difficulty is high. And the relational tables obtained by the laboratory may not cover all the conditions of the actual environment.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a self-adaptive air volume adjusting method of a range hood, which is simple to control, strong in operability, and capable of accurately realizing fan rotation speed compensation and ensuring smooth oil smoke absorption and smoke discharge, aiming at the prior art.
The first technical problem to be solved by the present invention is to provide a range hood applying the above method in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a self-adaptive air volume adjusting method of a range hood is characterized in that: initializing fan current I corresponding to different air quantity gears I of a fan in a range hoodi；
Detecting and acquiring opening angle threshold Z of check valve corresponding to different air volume gears i of range hood under the condition of no external air pressurei；
In the working process of the range hood, acquiring the working air quantity gear i of the fan in real time, acquiring the corresponding opening angle Z of the check valve at the same time, and adjusting the working current of the fan until the opening angle of the check valve is restored to Zi。
Optionally, when the range hood is working, judging whether Z is ZiIf not, adjusting the working current of the fan according to the set current unit adjustment quantity until the opening angle of the check valve obtained by detection is adjusted to Zi。
Optionally, under the laboratory condition, the opening angle Z of the check valve corresponding to the different air volume gears i of the range hood under the condition of no external air pressure is obtained0i(ii) a Obtaining the current I of each fan when the fan worksiAnd the detected external wind pressure is P and corresponds to the opening angle ZP of the check valveiIn the state of (1), the opening angle of the check valve is returned to ZiTime-corresponding fan current adjustment quantity delta Ii；
When the range hood works, the air quantity gear I of the fan work is acquired in real time, the opening angle Z of the corresponding check valve is acquired simultaneously, and then the adjustment quantity delta I of the fan working current is calculated as delta Ii*(Z－Zi)/(ZPi－Z0i)；
Adjusting the working current of the fan to I according to the delta Ii+ΔI。
Preferably, the working current of the fan is adjusted according to the set current unit adjustment amount I0, wherein I0 is equal to delta Ii*(Z－Zi)/Zi。
Preferably, a check valve angle difference threshold value a is set, wherein a is more than 0; at Z-ZiAnd adjusting the current of the fan under the condition of more than a, otherwise, not adjusting the current of the fan.
In order to avoid the opening angle threshold Z of the non-return valve caused by the accumulated oil smoke in the long-term working process of the range hoodiWhen the range hood works, the external wind pressure Y is detected and obtained, the Y is compared with a set non-external wind pressure threshold Y0, if the Y is not more than Y0, after the rotating speed of the fan is stable, an opening angle threshold Z of a check valve corresponding to a wind volume gear i is carried outiThe detection of (2) is updated.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the range hood applying the method comprises a control circuit board, a fan electrically connected with the control circuit board, a smoke exhaust pipe connected between an outlet of the fan and a common flue, and a check valve arranged at the connecting end of the smoke exhaust pipe connected with the common flue, and is characterized in that: the air pressure sensor is used for detecting external air pressure outside the check valve, and the angle sensor and the air pressure sensor are in communication connection with the control circuit board.
Compared with the prior art, the method has the advantages that,the invention has the advantages that: according to the air volume self-adaptive adjusting method of the range hood, the opening angle threshold values Zi of the check valves corresponding to different air volume gears i are used as the standard for adjusting the current of the fan, so that the air volume after the current of the fan is adjusted can still meet the requirement of opening the check valves to ZiThe air quantity self-adaptive adjusting method of the range hood has strong environmental applicability and convenient implementation, and solves the problem of influence of the air pressure of a common flue on the exhaust air quantity of the range hood by a simple means.
The range hood disclosed by the invention can be applied to and realize the air volume self-adaptive adjusting method of the range hood.
Drawings
Fig. 1 is a method for adaptively adjusting an air volume of a range hood according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
As shown in fig. 1, the range hood in this embodiment includes a control circuit board, a fan electrically connected to the control circuit board, a smoke exhaust pipe connected between an outlet of the fan and a common flue, a check valve disposed at a connection end of the smoke exhaust pipe and the common flue, an angle sensor for detecting an opening angle of the check valve, and an air pressure sensor for detecting external air pressure outside the check valve, where the angle sensor and the air pressure sensor are in communication connection with the control circuit board, and further transmit a detected angle value and an air pressure value to the control circuit board, and the control circuit board performs the following adaptive air volume adjustment method of the range hood according to the angle value and the air pressure value, so as to adjust a working current of the fan, and further solve an influence of air pressure of the common flue on an air exhaust volume of the range hood.
The self-adaptive air volume adjusting method of the range hood comprises the following steps:
s1, initializing fan currents I corresponding to different air volume gears I of fans in the range hoodi. Simultaneously, before the range hood leaves a factory, the range hood is obtained under the condition of no external wind in a laboratoryOpening angle Z0 of check valve corresponding to different air quantity gear i under pressure conditioni(ii) a Obtaining the current I of each fan when the fan worksiAnd the detected external wind pressure is P and corresponds to the opening angle ZP of the check valveiIn the state of (1), the opening angle of the check valve is returned to ZiTime-corresponding fan current adjustment quantity delta Ii。
S2, after the range hood is installed at home of a user, when the range hood is just started to be used, detecting and acquiring opening angle threshold values Z of check valves corresponding to different air volume gears i of the range hood under the condition of no external air pressurei. Specifically, an external wind pressure threshold Y0 can be set, when the range hood works in each wind volume gear i, the external wind pressure Y is detected in real time by using the wind pressure sensor and is compared with Y0, and when Y is less than or equal to Y0, the opening angle threshold Z of the check valve can be setiThe calculation of (1) is generally to average the angle data of the check valves collected by the angle sensor after the rotation speed of the fan is stabilized at the current air quantity gear i, so as to obtain the opening angle threshold values Z of the check valves corresponding to different air quantity gears ii。
In order to avoid the opening angle threshold Z of the non-return valve caused by the accumulated oil smoke in the long-term working process of the range hoodiThe influence of the threshold value Y is detected and obtained when the fan is started to work in the subsequent working process of the range hood, the Y is compared with a set non-external wind pressure threshold value Y0, if the Y is not more than Y0, after the rotating speed of the fan is stable, an opening angle threshold value Z of a check valve corresponding to the air volume gear i is carried outiThe detection of (2) is updated. Normally the opening angle threshold Z of the non-return valveiThe detection and the updating can be finished within 30s, the normal use of the range hood by a user is not influenced, and a more accurate opening angle threshold value Z of the check valve can be obtained according to the real-time environment stateiFor subsequent calculations.
And in the case of Y > Y0, the opening angle threshold Z of the non-return valve currently stored is maintainediAnd is not changed.
S3, acquiring the working air quantity gear i of the fan in real time in the working process of the range hood, and meanwhile, acquiring the working air quantity gear i of the fan in real timeThe opening angle Z of the corresponding check valve is detected and acquired by using the angle sensor and is transmitted to the control circuit board, and the control circuit board controls and adjusts the working current of the fan to supplement the air quantity of the fan so as to restore the opening angle of the check valve to ZiThe aim of (2) is to eliminate the influence of the air pressure of the common flue on the exhaust volume of the range hood.
Specifically, when the range hood works, the air quantity gear I of the fan work is acquired in real time, the opening angle Z of the corresponding check valve is acquired at the same time, and then the adjustment quantity delta I of the fan working current is calculated as delta Ii*(Z－Zi)/(ZPi－Z0i) (ii) a Adjusting the working current of the fan to be I according to the delta Ii+ΔI。
In this embodiment, the operating current of the fan is adjusted according to the set current unit adjustment amount I0, I0 ═ Δ Ii*(Z－Zi)/Zi。
In order to avoid too frequent adjustment of the fan current, a check valve angle difference threshold value a is set, wherein a is larger than 0. The value a can be set according to the specific adjusting precision, such as 10% Z in the embodimenti. At Z-ZiAnd if the current is larger than a, adjusting the current of the fan, otherwise, not adjusting the current of the fan.
According to the air volume self-adaptive adjusting method of the range hood, the opening angle threshold values Zi of the check valves corresponding to different air volume gears i are used as the standard for adjusting the current of the fan, so that the air volume after the current of the fan is adjusted can still meet the requirement of opening the check valves to ZiThe air quantity self-adaptive adjusting method of the range hood has strong environmental applicability and convenient implementation, and solves the problem of influence of the air pressure of a common flue on the exhaust air quantity of the range hood by a simple means.
Example two
The present embodiment is different from the first embodiment only in that: more simply, when the range hood works, whether Z is equal to Z is judgediIf not, adjusting the working current of the fan according to the set current unit adjustment amount until the opening angle of the check valve obtained by detection is adjusted to Zi. During specific work, the device can also be provided withAnd setting a plurality of set current unit regulating quantities to regulate the working current of the fan.
According to Z and ZiThe difference between the two current units being selected to be different, e.g. when Z and Z are adjustediWhen the difference between Z and Z is large, a larger current unit adjustment can be selected, and when Z and Z are largeiWhen the difference between the current and the current is smaller, the smaller current unit regulating quantity is selected, so that the working current of the fan can be adjusted more quickly and accurately, and the air quantity of the fan can be compensated under the influence of external air pressure.
Claims (6)
1. A self-adaptive air volume adjusting method of a range hood is characterized in that: initializing fan current I corresponding to different air quantity gears I of a fan in a range hoodi(ii) a Under the condition of a laboratory, the opening angle Z0 of a check valve corresponding to different air volume gears i of the range hood under the condition of no external air pressure is obtainedi(ii) a Obtaining the current I of each fan when the fan worksiAnd the detected external wind pressure is P and corresponds to the opening angle ZP of the check valveiIn the state of (1), the opening angle of the check valve is returned to ZiTime-corresponding fan current adjustment quantity delta Ii；
When the range hood is just used, detecting and acquiring opening angle threshold values Z of check valves corresponding to different air volume gears i of the range hood under the condition of no external air pressurei；
In the working process of the range hood, the air quantity gear I of the fan is obtained in real time, the opening angle Z of the corresponding check valve is obtained at the same time, and then the adjustment quantity delta I of the working current of the fan is calculated as delta Ii*(Z－Zi)/(ZPi－Z0i)；
Adjusting the working current of the fan to I according to the delta Ii+ΔI；
Adjusting the working current of the fan until the opening angle of the check valve returns to Zi。
2. The adaptive air volume adjusting method of the range hood according to claim 1, characterized in that: when the range hood works, judging whether Z is equal to ZiIf not, adjusting the working current of the fan according to the set current unit adjustment quantity until the opening angle of the check valve obtained by detection is adjusted to Zi。
3. The adaptive air volume adjusting method of the range hood according to claim 1, characterized in that: adjusting the working current of the fan according to the set current unit adjustment quantity I0, wherein I0 is delta Ii*(Z－Zi)/Zi。
4. The adaptive air volume adjusting method of the range hood according to any one of claims 1 to 3, characterized in that: setting a check valve angle difference threshold value a, wherein a is more than 0; at Z-ZiAnd adjusting the current of the fan under the condition of more than a, otherwise, not adjusting the current of the fan.
5. The adaptive air volume adjusting method of the range hood according to any one of claims 1 to 3, characterized in that: when the range hood works, the external wind pressure Y is obtained through detection, the Y is compared with a set non-external wind pressure threshold value Y0, if the Y is not more than Y0, after the rotating speed of a fan is stable, an opening angle threshold value Z of a check valve corresponding to a wind volume gear i is carried outiThe detection of (2) is updated.
6. A range hood applying the method of any one of claims 1 to 5, comprising a control circuit board, a fan electrically connected with the control circuit board, a smoke exhaust pipe connected between an outlet of the fan and a common flue, and a check valve arranged at a connecting end of the smoke exhaust pipe connected with the common flue, wherein: the air pressure sensor is used for detecting external air pressure outside the check valve, and the angle sensor and the air pressure sensor are in communication connection with the control circuit board.
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| CN202110077425.2A CN112856526B (en) | 2021-01-20 | 2021-01-20 | Air volume self-adaptive adjusting method of range hood and range hood |
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| US11156368B2 (en) * | 2018-04-19 | 2021-10-26 | Steivor, Inc. | Range exhaust hood cleaning system |
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| EP1906095A2 (en) * | 2006-09-14 | 2008-04-02 | Miele & Cie. KG | Method for regulating the exhaust air volume flow from the cooking chamber of an oven |
| WO2009145745A1 (en) * | 2008-04-16 | 2009-12-03 | Hinderks M V | New reciprocating machines and other devices |
| CN103836691A (en) * | 2014-02-28 | 2014-06-04 | 广东威灵电机制造有限公司 | Range hood, and method and system for adjusting constant air volume of range hood |
| CN104295777A (en) * | 2014-07-28 | 2015-01-21 | 丁德厚 | Top-opening type limiting rotary check fire valve and intelligentization of range hood |
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