KR20170053930A - Active noise cancelation equipment for kitchen hood - Google Patents

Active noise cancelation equipment for kitchen hood Download PDF

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Publication number
KR20170053930A
KR20170053930A KR1020150156476A KR20150156476A KR20170053930A KR 20170053930 A KR20170053930 A KR 20170053930A KR 1020150156476 A KR1020150156476 A KR 1020150156476A KR 20150156476 A KR20150156476 A KR 20150156476A KR 20170053930 A KR20170053930 A KR 20170053930A
Authority
KR
South Korea
Prior art keywords
exhaust
suction pipe
fan
noise
hood
Prior art date
Application number
KR1020150156476A
Other languages
Korean (ko)
Inventor
임창목
정성호
강신현
Original Assignee
(주) 이레아이에스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주) 이레아이에스 filed Critical (주) 이레아이에스
Priority to KR1020150156476A priority Critical patent/KR20170053930A/en
Publication of KR20170053930A publication Critical patent/KR20170053930A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/245—Means for preventing or suppressing noise using resonance

Abstract

The present invention is characterized in that an exhaust fan 40 is installed in the hood cover 10 and exhaust air of the exhaust fan 40 is connected to the exhaust duct 1 through the exhaust pipe 42,
A suction pipe (20) vertically added in the kitchen hood lid (10) where the inner space is reduced toward the upper side;
A speaker (25) installed on a speaker hole (22) formed on one side of the suction pipe (20) and outputting a frequency output of a reverse phase for removing noise into the suction pipe;
A microphone 27 installed in the suction pipe 20 between the speaker 25 and the exhaust fan 40 to read the noise frequency level;
A fan base 30 installed to cover the periphery of the upper end of the suction pipe 20 and the upper end of the hood cover 10 and having a suction hole 32 at the center thereof;
An exhaust fan 40 fixed on the fan base 30 so as to position the suction portion in the suction hole 32 of the fan base 30 and connecting the exhaust duct 1 and the exhaust pipe 42; And
And a controller (50) for recognizing the noise frequency read through the microphone (27) and providing the noise elimination frequency in a reverse phase to the noise frequency to the speaker (25).

Description

[0001] The present invention relates to a kitchen hood noise canceling apparatus,

The present invention relates to a kitchen hood noise canceling apparatus.

Generally, a noise elimination technique is a technique for generating a noise having a wavelength opposite to that of a noise to remove noise, and is disclosed in US Pat. No. 5,978,849 and WIPO Publication No. WO2008090544.

In addition, although a technique in which a separator for mechanically reversing the phase is installed in a tube body is known as a Korean Patent Registration No. 10-0360307, it is difficult to meet the phase reversal condition and is affected by the environment.

In addition, there has been an attempt to apply noise reduction technology to the kitchen hood. Since a microphone and a speaker are installed on the inner wall of the hood lid, noise can not easily be removed depending on the location of the ambient noise.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a kitchen hood noise canceling apparatus which removes noise of a kitchen hood without affecting ambient noise.

It is another object of the present invention to provide an air conditioner in which a suction pipe is attached to a kitchen hood and a noise measuring microphone of an exhaust fan and a speaker generating a reverse phase frequency for removing noise are installed in the suction pipe, And to provide a kitchen hood noise canceling device for eliminating the hood noise.

Another object of the present invention is to provide a kitchen hood noise removing device having an exhaust fan, a fan base having a hood cover and a partition wall, and a fan base and an exhaust fan, .

To this end, according to the present invention, an exhaust fan is installed in a hood cover and exhaust air of an exhaust fan is connected to an exhaust duct in an exhaust pipe,

A suction pipe vertically added to the inside of the kitchen hood cover, the interior space of which is reduced toward the upper side;

A speaker installed on a speaker hole formed on one side of the suction pipe for outputting a frequency of a reverse phase for removing noise into the suction pipe;

A microphone installed in the suction pipe between the speaker and the exhaust fan to read the noise frequency level;

A fan base installed to cover the periphery of the upper end of the suction pipe and the upper end of the hood cover and having a suction hole formed at the center thereof;

An exhaust fan fixed on the fan base so as to position the suction portion in the suction hole of the fan base and connecting the exhaust duct to the exhaust pipe; And

And a controller for recognizing the noise frequency read through the microphone and providing the noise canceling frequency of the reverse phase to the speaker.

As described above, the present invention allows the noise of the kitchen hood to be removed without affecting the ambient noise.

In the present invention, a suction pipe is added to the kitchen hood, and a noise measurement microphone for the exhaust fan and a speaker for generating a reverse phase frequency for removing noise are installed in the suction pipe, so that the noise of the exhaust fan is reliably eliminated regardless of the external noise of the hood cover do.

The present invention has a fan base provided with an exhaust fan, a hood cover and a fan base, and the fan base and the exhaust fan are covered with the exhaust fan housing to be separately installed from the hood cover.

1 is a perspective view of the present invention,
2 is a side view of the present invention,
3 is a rear view of the present invention,
4 is a perspective exploded perspective view of the present invention,
5 is a control block diagram of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

An exhaust fan 40 is installed in the hood cover 10 and the exhaust air of the exhaust fan 40 is connected to the exhaust duct 1 through the exhaust pipe 42,

A suction pipe (20) vertically added in the kitchen hood lid (10) where the inner space is reduced toward the upper side;

A speaker (25) installed on a speaker hole (22) formed on one side of the suction pipe (20) and outputting a reverse phase frequency for noise reduction into the suction pipe;

A microphone 27 installed in the suction pipe 20 between the speaker 25 and the exhaust fan 40 to read the noise frequency level;

A fan base 30 installed to cover the periphery of the upper end of the suction pipe 20 and the upper end of the hood cover 10 and having a suction hole 32 at the center thereof;

An exhaust fan 40 fixed on the fan base 30 so as to position the suction portion in the suction hole 32 of the fan base 30 and connecting the exhaust duct 1 and the exhaust pipe 42; And

And a controller (50) for recognizing the noise frequency read through the microphone (27) and providing the noise elimination frequency in a reverse phase to the noise frequency to the speaker (25).

The lower end of the suction pipe 20 may be spaced apart from the base cover 12 at the inlet of the hood cover 10.

The upper end of the hood cover 10 and the suction pipe 20 includes a fan base 30 supporting the exhaust fan 40 and having a suction hole 32 communicating with the suction pipe 20,

The exhaust fan housing 45 having the exhaust hole 44 is covered by covering the fan base 30 and the exhaust fan 40. [

The upper end of the hood lid 10 and the fan base 30 are configured to be sealed by the support bracket 35.

5 shows a control block road of the present invention, an analogue digital converter 51 for converting the noise frequency level of the exhaust fan 40 through the microphone 27 into a digital value,

A control unit 50 for reading the converted digital value of the analogue digital converter 51 through the port P1 and outputting the converted digital value through the port P2 in the reverse phase,

A digital-to-analog converter 52 for converting an anti-phase frequency through the port P2 to an analog value,

A speaker 25 for outputting an analog reverse phase frequency through the digital-to-analog converter 52 by sound,

A button unit 53 for instructing control to the control unit 50,

And a display 54 indicating an instruction of the button unit 53. [

According to the present invention constructed as above, instead of connecting the exhaust fan and the exhaust duct to the hood cover,

A separate suction pipe 20 is installed in the hood cover 15. The lower end of the suction pipe 20 is spaced apart from the base cover 12 blocking the lower end of the hood cover 15, (The supporting means can be used by known means such as screwing, hooking, welding, etc., and therefore simply supported). The portion other than the suction hole 32 functions to join the upper end of the hood lid 10 in a sealed state.

A separate speaker housing 24 is connected to the speaker hole 22 so that the vibration output portion of the speaker 25 is positioned in the spokes hole 22 of the suction pipe 20 and the vibration of the speaker 25 is prevented from being transmitted to the outside. (20) around the hips. At the same time, a microphone (27) is installed so as to extract the noise of the exhaust fan (40) at a position between the exhaust fan (40) and the speaker hole (22) of the inner diameter portion of the suction pipe (20).

The exhaust pipe 42 covers the fan base 30 and the exhaust fan 40 so that the exhaust pipe 42 comes into the exhaust hole 44 where the exhaust pipe 42 connected to the exhaust duct 1 is located. Thereby joining the exhaust duct (1). The control board shown in FIG. 5 including the control unit 50 is installed at a separate position from the base cover 12 of the hood cover 10. FIG. The power source may be a battery power source or a rectified DC power source by rectifying the AC power source, so that it is not particularly limited.

The present invention thus installed is not a method of discharging the smoke of the kitchen through the entirety of the hood dowel 10 for exhausting the exhaust fan 40 for exhaust of the kitchen hood, but rather discharging it quantitatively through the suction pipe 20 So that the suction effect of the exhaust fan 40 is maximized, and at the same time, the noise of the exhaust fan 40 is concentrated on the suction pipe 20 to be transmitted.

Therefore, the generated noise is obtained in the form of a noise frequency through the microphone 27 provided on the inner wall of the suction pipe 20. As shown in FIG. 5, the frequency waveform of the output of the microphone 27 is synchronized with the output level and phase to the control unit 50 serving as a microcomputer via the port P1 through the analog digital converter 51.

When the controller 50 outputs the analog value to the speaker 25 in synchronism with the reverse phase and outputs the analog value to the port P2, the digital-to-analog converter 52 converts the analog value into an analog value, A reverse phase sound is provided to perfectly perform the noise canceling function in which the noise frequency and the opposite phase frequency are synthesized to eliminate the sound.

In addition, the exhaust fan 40 is sealed by the exhaust fan housing 45 to block the transmission of noise to the bulge, and the suction pipe 20 performs the two functions of the suction pipe and the noise elimination passage to perform the noise removing function and the suction function To be performed efficiently. The fan base 30 has a function of supporting the exhaust fan 40 and a function of supporting the suction pipe 20 and the hood lid 10 and a function of supplying the suction air of the suction pipe 20 directly to the exhaust fan 40 Thereby functioning to remove the noise while supporting the exhaust fan 40, the suction pipe 20 and the hood lid 10.

In addition, according to the present invention, a space is provided between the base cover 12 of the hood lid 10 and the lower end of the suction pipe 20 to suck residual smoke or the like between the hood lid 10 and the base cover 12, .

1, an exhaust duct 10, a hood cover 12, a base cover 20, a suction pipe 22, a speaker hole 24, a speaker housing 25, a speaker 27, a microphone 30, a fan base 32, a suction hole 35, a support bracket 40, an exhaust fan 42, An exhaust hole 45, an exhaust fan housing 50,

Claims (4)

An exhaust fan 40 is installed in the hood cover 10 and the exhaust air of the exhaust fan 40 is connected to the exhaust duct 1 through the exhaust pipe 42,
A suction pipe (20) vertically added in the kitchen hood lid (10) where the inner space is reduced toward the upper side;
A speaker (25) installed on a speaker hole (22) formed on one side of the suction pipe (20) and outputting a reverse phase frequency for noise reduction into the suction pipe;
A microphone 27 installed in the suction pipe 20 between the speaker 25 and the exhaust fan 40 to read the noise frequency level;
A fan base 30 installed to cover the periphery of the upper end of the suction pipe 20 and the upper end of the hood cover 10 and having a suction hole 32 at the center thereof;
An exhaust fan 40 fixed on the fan base 30 so as to position the suction portion in the suction hole 32 of the fan base 30 and connecting the exhaust duct 1 and the exhaust pipe 42; And
And a controller (50) for recognizing the noise frequency read through the microphone (27) and providing the noise elimination frequency in a reverse phase to the noise frequency to the speaker (25). The apparatus of claim 1, wherein the lower end of the suction pipe (20) is spaced apart from the base cover (12) at the inlet of the hood cover (10). The hood according to claim 1, wherein the hood lid (10) and the upper end of the suction pipe (20) are provided with a fan base (30) having a suction hole (32) communicating with the suction pipe (20)
Wherein an exhaust fan housing (45) covering the fan base (30) and the exhaust fan (40) and having an exhaust hole (44) is added. 4. The apparatus of claim 3, wherein the upper end of the hood cover (10) and the fan base (30) are sealed by a support bracket (35).
KR1020150156476A 2015-11-09 2015-11-09 Active noise cancelation equipment for kitchen hood KR20170053930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150156476A KR20170053930A (en) 2015-11-09 2015-11-09 Active noise cancelation equipment for kitchen hood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150156476A KR20170053930A (en) 2015-11-09 2015-11-09 Active noise cancelation equipment for kitchen hood

Publications (1)

Publication Number Publication Date
KR20170053930A true KR20170053930A (en) 2017-05-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150156476A KR20170053930A (en) 2015-11-09 2015-11-09 Active noise cancelation equipment for kitchen hood

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KR (1) KR20170053930A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609514A (en) * 2020-05-19 2020-09-01 珠海格力电器股份有限公司 Fan noise control method and device and air conditioning equipment
WO2022250259A1 (en) * 2021-05-25 2022-12-01 삼성전자주식회사 Rangehood

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609514A (en) * 2020-05-19 2020-09-01 珠海格力电器股份有限公司 Fan noise control method and device and air conditioning equipment
WO2022250259A1 (en) * 2021-05-25 2022-12-01 삼성전자주식회사 Rangehood

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