CN107655048B - Range hood and constant air quantity adjusting method and system thereof - Google Patents
Range hood and constant air quantity adjusting method and system thereof Download PDFInfo
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- CN107655048B CN107655048B CN201610596577.2A CN201610596577A CN107655048B CN 107655048 B CN107655048 B CN 107655048B CN 201610596577 A CN201610596577 A CN 201610596577A CN 107655048 B CN107655048 B CN 107655048B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims description 17
- 238000004378 air conditioning Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a method for regulating constant air quantity of a range hood, which comprises the steps of obtaining a range of gear air quantity of the range hood set by a user and obtaining real-time air speed of an air inlet of the range hood; and calculating to obtain the real-time air quantity of the range hood according to the real-time air speed of the air inlet of the range hood; and the output power of the fan is regulated within the maximum output power range of the range hood so that the real-time air volume of the range hood is contained within the range of the range hood gear air volume set by a user. According to the invention, the output power of the fan is regulated within the maximum output power range of the range hood, so that the real-time air volume of the range hood is contained within the range of the range hood gear air volume set by a user, the smoke discharging effect of the range hood is improved, and the energy is saved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a range hood and a constant air quantity adjusting method and system thereof.
Background
Nowadays, a range hood has become one of the indispensable home appliances in the life of residents. In the process of installing and using the range hood by a user, the actual exhaust volume of the range hood can be influenced due to the influence of the installation position and other environmental factors, such as the distance between the range hood and a public flue, the size of the public flue, the number of the public flue emissions, the altitude of the installation floor, the altitude of the geographic position, the external air flow of the flue and the like. The nominal exhaust volume of the range hood is the air volume in a standard state (in a state without external resistance, namely, in a state of 0 static pressure), and the range hood with the same nominal air volume has great difference in the range hood effect under different application conditions.
Disclosure of Invention
In order to overcome the defects in the prior art, the main purpose of the invention is to provide a method for adjusting the constant air volume of the range hood, which can automatically detect the real-time air volume of the range hood and automatically adjust the output power of a fan within the maximum output power range of the range hood so that the real-time air volume of the range hood is contained in the range of the gear air volume of the range hood set by a user.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a method for adjusting constant air quantity of a range hood, which comprises the following steps:
acquiring a range of gear air quantity of the range hood set by a user;
acquiring the real-time wind speed of an air inlet of the range hood;
calculating to obtain the real-time air quantity of the range hood according to the real-time air speed of the air inlet of the range hood;
and adjusting the output power of the fan within the maximum output power range of the range hood so that the real-time air volume of the range hood is contained within the range of the range hood gear air volume set by a user.
Preferably, the acquiring the real-time wind speed of the air inlet of the range hood specifically comprises: the real-time wind speed of the air inlet of the range hood is measured by a wind speed sensor, or the real-time air inlet pressure of the air inlet of the range hood is measured by a pressure sensor, and the real-time wind speed of the air inlet of the range hood is obtained through calculation.
Preferably, the real-time air quantity Q of the range hood is calculated by the following formula:
Q＝F×S；
wherein Q is the real-time air quantity of the range hood, F is the real-time air speed of an air inlet of the range hood, and S is the area of the air inlet of the range hood.
Preferably, the adjusting the output power of the fan within the range of the maximum output power of the range hood so that the real-time air volume of the air inlet of the range hood is included within the range of the range hood gear air volume set by the user comprises: judging whether the real-time air quantity of the range hood is smaller than the minimum value of the range hood range set by a user or larger than the maximum value of the range hood range set by the user; when the real-time air quantity of the range hood is larger than the maximum value of the range hood gear air quantity range set by a user, the output power of the fan is reduced, so that the real-time air quantity of the range hood is contained in the range hood gear air quantity range set by the user; when the real-time air volume of the range hood is smaller than the minimum value of the range hood air volume range set by a user, further judging whether the fan reaches the maximum output power, and when the fan does not reach the maximum output power, increasing the output power of the fan so that the real-time air volume of the range hood is contained in the range hood air volume range set by the user.
Correspondingly, the invention also provides a constant air quantity adjusting system of the range hood, which comprises an acquisition unit, a monitoring unit, a control unit and a fan, wherein the acquisition unit, the monitoring unit and the fan are respectively connected with the control unit; the acquisition unit is used for acquiring the air volume range of the range hood set by a user; the monitoring unit is used for acquiring the real-time wind speed of the air inlet of the range hood; the control unit is used for obtaining the real-time air quantity of the range hood through calculation according to the real-time air speed of the air inlet of the range hood, and adjusting the output power of the fan within the maximum output power range of the range hood so that the real-time air quantity of the range hood is contained in the air quantity range of the range hood gear set by a user.
Preferably, the monitoring unit comprises a wind speed sensor for measuring the real-time wind speed of the air inlet of the range hood.
Preferably, the monitoring unit comprises a pressure sensor and a calculating unit, wherein the pressure sensor is used for measuring the real-time air inlet pressure of the air inlet of the range hood, and the calculating unit is used for calculating the real-time air inlet pressure of the air inlet of the range hood to obtain the real-time air speed of the air inlet of the range hood.
Preferably, the control unit comprises a fan adjusting circuit, a feedback processing circuit and a comparison circuit, wherein the feedback processing circuit is respectively connected with the comparison circuit and the monitoring unit, and the comparison circuit is respectively connected with the fan adjusting circuit and the acquisition unit; the feedback processing circuit is used for obtaining the real-time air quantity of the range hood through calculation according to the real-time air speed of the air inlet of the range hood; the comparison circuit is used for judging whether the real-time air quantity of the range hood is contained in the range of the gear air quantity of the range hood set by a user, and outputting a judgment result to the fan adjusting circuit; the fan adjusting circuit is used for adjusting the output power of the fan within the maximum output power range of the range hood according to the judging result of the comparing circuit, so that the inlet real-time air quantity of the range hood is contained within the range of the range hood gear air quantity set by a user.
Preferably, the real-time air quantity Q of the range hood is:
Q＝F×S；
wherein Q is the real-time air quantity of the range hood, F is the real-time air speed of an air inlet of the range hood, and S is the area of the air inlet of the range hood.
In addition, the invention also provides a range hood, which comprises the constant air quantity adjusting system of the range hood.
Compared with the prior art, the constant air volume adjusting method of the range hood obtains the range of the gear air volume of the range hood and the real-time air speed of the air inlet of the range hood, which are set by a user, and calculates the real-time air volume of the range hood according to the real-time air speed of the air inlet of the range hood; and the output power of the fan is regulated within the maximum output power range of the range hood so that the real-time air quantity of the air inlet of the range hood is contained in the range of the gear air quantity of the range hood set by a user. According to the intelligent smoke exhaust ventilator, the real-time air quantity of the smoke exhaust ventilator is intelligently adjusted, so that the smoke exhaust effect of the smoke exhaust ventilator is improved, and energy sources are saved.
Drawings
Fig. 1 is a schematic view of a range hood according to the present invention;
fig. 2 is a block diagram of a range hood adjustment system according to the present invention;
fig. 3 is a flowchart showing a method for adjusting a range hood according to a preferred embodiment of the present invention;
fig. 4 is a flowchart of a method for adjusting a range hood according to an alternative embodiment of the present invention;
fig. 5 is a graph showing the air volume characteristics of a range hood with a constant air volume body adjusting system according to an embodiment of the present invention compared with a conventional range hood;
in the figure, 1, a public flue; 2. a smoke exhaust pipe; 3. a controller; 4. a wind speed sensor; 41. a wind speed sampling pipeline; 5. a blower; 6. an air inlet; 10. a monitoring unit; 20. a control unit; 201. a feedback processing circuit; 202. a comparison circuit; 203. a fan adjusting circuit; 30. an acquisition unit; 40. blower fan
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the constant air quantity regulating system of the range hood comprises a fan 5, a smoke exhaust pipe 2, an air inlet 6, an air speed sensor 4 and a controller 3. Wherein, the air inlet 6 is communicated with the public flue 1 through the smoke exhaust pipe 2; the fan 5 is arranged in the air inlet 6 and comprises a motor and a wind wheel; the wind speed sensor 4 is connected with the controller 3, and the controller 3 is connected with the fan 5. When the power supply of the range hood is connected, the motor is driven, the wind wheel rotates at high speed, a negative pressure area is formed in a certain space range above the cooking range, and indoor oil smoke gas is sucked into the range hood through the air inlet 6 and is discharged out of the room through the smoke exhaust pipe 2 and the public flue 1.
As shown in fig. 2, the constant air quantity adjusting system of the range hood comprises a monitoring unit 10, a control unit 20, an acquisition unit 30 and a fan 5, wherein the monitoring unit 10 comprises an air speed sensor 4 and an air speed sampling pipeline 41, one end of the air speed sampling pipeline 41 is connected with the air speed sensor 4, and the other end of the air speed sampling pipeline 41 is arranged at an air inlet 6 of the range hood; the acquisition unit 30 and the control unit 20 are provided on the controller 3. The collection unit 30 is used for collecting a range of range air volume of the range hood set by a user, the air speed sensor 4 detects real-time air speed of the air inlet 6 of the range hood through the sampling pipeline 41, the control unit 20 is used for calculating real-time air volume of the range hood according to the real-time air speed of the air inlet 6 of the range hood, and the output power of the fan is regulated within the range of maximum output power of the range hood so that the real-time air volume of the range hood is contained within the range of range hood air volume set by the user.
The control unit 20 comprises a feedback processing circuit 201, a comparison circuit 202 and a fan adjusting circuit 203, the wind speed sensor 4 is connected with the feedback processing circuit 201, and the wind speed sensor 4 feeds back the measured real-time wind speed of the air inlet 6 of the range hood to the feedback processing circuit 201. The feedback processing circuit 201 is used for calculating the real-time wind speed of the air inlet 6 of the range hood to obtain the real-time wind quantity of the range hood; the comparison circuit 202 is respectively connected to the feedback processing circuit 201 and the acquisition unit 30, and is configured to compare the real-time air volume of the range hood calculated by the feedback processing circuit 201 with the range of air volumes of the range hood set by the user and acquired by the acquisition unit 30, determine whether the real-time air volume of the range hood is smaller than the minimum value of the range hood range air volume set by the user, or whether the real-time air volume of the range hood is larger than the maximum value of the range hood range air volume set by the user, and transmit the determination result to the fan adjusting circuit 203. When the real-time air volume of the range hood is larger than the maximum value of the range air volume range set by the user as a result of the judgment, the fan adjusting circuit 203 reduces the output power of the fan 5 so that the real-time air volume of the range hood is contained in the range air volume range of the range hood set by the user. When the judgment result is that the real-time air volume of the range hood is smaller than the minimum value of the range hood gear air volume range set by the user, the fan adjusting circuit 203 further judges whether the fan 5 reaches the maximum output power, and when the fan does not reach the maximum output power, the fan adjusting circuit 203 increases the output power of the fan so that the real-time air volume of the range hood is contained in the range hood gear air volume range set by the user.
In this embodiment, the monitoring unit 10 is configured as a wind speed sensor 4, and can directly measure and acquire the real-time wind speed of the air inlet 6 of the range hood. In another embodiment, the monitoring unit 10 may also include a pressure sensor and a pressure sampling pipe, one end of the pressure sampling pipe is connected to the pressure sensor, the other end of the pressure sampling pipe is disposed at an air inlet of the range hood, the pressure sensor firstly measures the air inlet pressure of the air inlet 6 of the range hood through the pressure sampling pipe, and then multiplies the real-time air inlet pressure of the air inlet 6 by the pressure coefficient to obtain the real-time air speed of the air inlet 6.
Let the real-time amount of wind of air intake of range hood be Q, the real-time wind speed of air intake 6 of range hood be F, the area of air intake 6 of range hood be S, then there is:
Q＝F×S。
as shown in fig. 3 and 4, the invention further provides a method for adjusting the constant air quantity of the range hood, which specifically comprises the following steps:
step S100, acquiring a range of gear air quantity of the range hood set by a user.
Step S101, acquiring the real-time wind speed of an air inlet of the range hood.
The real-time wind speed of the air inlet of the range hood is directly measured by a wind speed sensor.
Step S102, calculating to obtain the real-time air quantity of the range hood according to the real-time air speed of the air inlet of the range hood.
The real-time air quantity of the range hood is calculated by the following formula:
Q＝F×S；
wherein Q is the real-time air quantity of the range hood, F is the real-time air speed of an air inlet of the range hood, and S is the area of the air inlet of the range hood.
Step S103, adjusting the output power of the fan so that the real-time air quantity of the range hood is contained in the range of the range hood gear air quantity set by a user.
The step S103 specifically includes: step S201, judging whether the real-time air quantity of the range hood is larger than the maximum value of the range hood gear air quantity range set by a user; if the judgment result is yes, step S301 is performed to reduce the output power of the fan. If the judgment result is no, step S202 is performed to judge whether the real-time air volume of the range hood is smaller than the minimum value of the range hood gear air volume range set by the user, and if the judgment result is no, step S401 is performed to maintain the output power of the fan. If the result is yes, step S203 is performed to determine whether the fan reaches its maximum output power, and if the result is yes, step S401 is performed to maintain the output power of the fan. And if not, increasing the output power of the fan, and repeating the step S100.
In addition, the invention also provides a range hood, which comprises the constant air quantity adjusting system of the range hood.
As shown in fig. 5, which is a schematic diagram showing the comparison of the air volume characteristics of the range hood with the constant air volume adjusting system and the conventional range hood according to the present invention, it can be seen from the figure that the air volume of the conventional range hood decreases with the increase of the resistance in the range of 0 to 250Pa of the flue resistance, while the range hood with the constant air volume adjusting system according to the present invention has the advantages of variable resistance and constant air volume protection.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (9)
1. The method for adjusting the constant air quantity of the range hood is characterized by comprising the following steps of:
acquiring a range of gear air quantity of the range hood set by a user;
acquiring the real-time wind speed of an air inlet of the range hood;
calculating to obtain the real-time air quantity of the range hood according to the real-time air speed of the air inlet of the range hood;
adjusting the output power of a fan within the maximum output power range of the range hood so that the real-time air volume of the range hood is contained within the range of range hood gear air volume set by a user;
the method for acquiring the real-time wind speed of the air inlet of the range hood specifically comprises the following steps: the real-time wind speed of the air inlet of the range hood is measured by a wind speed sensor, or the real-time air inlet pressure of the air inlet of the range hood is measured by a pressure sensor, and the real-time wind speed of the air inlet of the range hood is obtained through calculation.
2. The method for adjusting the constant air volume of the range hood according to claim 1, wherein the real-time air volume Q of the range hood is calculated by the following formula:
Q＝F×S；
wherein Q is the real-time air quantity of the range hood, F is the real-time air speed of an air inlet of the range hood, and S is the area of the air inlet of the range hood.
3. The method for adjusting the constant air volume of the range hood according to claim 1 or 2, wherein adjusting the output power of the fan within the maximum output power range of the range hood so that the real-time air volume of the air inlet of the range hood is included in the range of the range hood gear air volume set by a user comprises:
judging whether the real-time air quantity of the range hood is smaller than the minimum value of the range hood range set by a user or larger than the maximum value of the range hood range set by the user;
when the real-time air quantity of the range hood is larger than the maximum value of the range hood gear air quantity range set by a user, the output power of the fan is reduced, so that the real-time air quantity of the range hood is contained in the range hood gear air quantity range set by the user;
when the real-time air volume of the range hood is smaller than the minimum value of the range hood range set by a user, further judging whether the fan reaches the maximum output power, and when the fan does not reach the maximum output power, increasing the output power of the fan so that the real-time air volume of the range hood is contained in the range hood range set by the user.
4. The constant air volume adjusting system of the range hood is applied to the constant air volume adjusting method of the range hood according to any one of claims 1-3, and is characterized by comprising an acquisition unit, a monitoring unit, a control unit and a fan, wherein the acquisition unit, the monitoring unit and the fan are respectively connected with the control unit;
the acquisition unit is used for acquiring the air volume range of the range hood set by a user;
the monitoring unit is used for acquiring the real-time wind speed of the air inlet of the range hood;
the control unit is used for obtaining the real-time air quantity of the range hood through calculation according to the real-time air speed of the air inlet of the range hood, and adjusting the output power of the fan within the maximum output power range of the range hood so that the real-time air quantity of the range hood is contained in the air quantity range of the range hood gear set by a user.
5. The constant volume air conditioning system of claim 4, wherein the monitoring unit comprises a wind speed sensor for measuring a real-time wind speed of an air inlet of the range hood.
6. The constant air volume adjusting system of the range hood according to claim 4, wherein the monitoring unit comprises a pressure sensor and a calculating unit, the pressure sensor is used for measuring the real-time air inlet pressure of the air inlet of the range hood, and the calculating unit is used for calculating the real-time air inlet pressure of the air inlet of the range hood to obtain the real-time air speed of the air inlet of the range hood.
7. The constant air volume adjusting system of the range hood according to claim 5 or 6, wherein the control unit comprises a fan adjusting circuit, a feedback processing circuit and a comparison circuit, the feedback processing circuit is respectively connected with the comparison circuit and the monitoring unit, and the comparison circuit is respectively connected with the fan adjusting circuit and the acquisition unit;
the feedback processing circuit is used for obtaining the real-time air quantity of the range hood through calculation according to the real-time air speed of the air inlet of the range hood;
the comparison circuit is used for judging whether the real-time air quantity of the range hood is contained in the range of the gear air quantity of the range hood set by a user, and outputting a judgment result to the fan adjusting circuit;
the fan adjusting circuit is used for adjusting the output power of the fan within the maximum output power range of the range hood according to the judging result of the comparing circuit, so that the inlet real-time air quantity of the range hood is contained within the range of the range hood gear air quantity set by a user.
8. The constant air volume adjusting system of a range hood according to claim 7, wherein the real-time air volume Q of the range hood is:
Q＝F×S；
wherein Q is the real-time air quantity of the range hood, F is the real-time air speed of an air inlet of the range hood, and S is the area of the air inlet of the range hood.
9. A range hood comprising a constant volume damper system according to any one of claims 4 to 8.
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| CN201610596577.2A CN107655048B (en) | 2016-07-26 | 2016-07-26 | Range hood and constant air quantity adjusting method and system thereof |
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| CN201610596577.2A CN107655048B (en) | 2016-07-26 | 2016-07-26 | Range hood and constant air quantity adjusting method and system thereof |
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| CN107655048B true CN107655048B (en) | 2023-11-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124480B (en) * | 2018-07-02 | 2020-11-13 | 珠海格力电器股份有限公司 | Air draft equipment and control method and device thereof |
| CN111623388B (en) * | 2019-02-28 | 2022-02-08 | 宁波方太厨具有限公司 | Self-adaptive control method for flow of range hood |
| CN113464991B (en) * | 2020-03-30 | 2022-10-21 | 宁波方太厨具有限公司 | Method for presetting target air volume of indoor range hood in centralized smoke exhaust system of building |
| CN113883572B (en) * | 2021-11-08 | 2023-11-07 | 杭州老板电器股份有限公司 | Floor configuration method and system for power distribution valve of central range hood and electronic equipment |
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| JP2008138900A (en) * | 2006-11-30 | 2008-06-19 | Matsushita Electric Ind Co Ltd | Air blower for range hood |
| CN104110794A (en) * | 2014-06-27 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner and air speed control method and device thereof |
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
| CN206207506U (en) * | 2016-07-26 | 2017-05-31 | 华帝股份有限公司 | Range hood and constant air volume adjusting system thereof |
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2016
- 2016-07-26 CN CN201610596577.2A patent/CN107655048B/en active Active
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| JP2008138900A (en) * | 2006-11-30 | 2008-06-19 | Matsushita Electric Ind Co Ltd | Air blower for range hood |
| CN104110794A (en) * | 2014-06-27 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner and air speed control method and device thereof |
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
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