TWI647415B - Air purifier with noise reduction function - Google Patents

Abstract

The invention provides an air purifying machine with a noise reduction function, which is composed of a casing, a noise reduction module and an air filter module. The air filter module filters the air through the filter to obtain clean air. The noise reduction module provides white noise through the operation sound of the motor in the air filter module. When the volume is insufficient, the speaker expands the white noise to achieve the noise reduction effect, or the sound data stored in the memory is played to achieve the noise reduction. The effect.

Description

Air purifier with noise reduction

The present invention relates to an air cleaner, and more particularly to an air cleaner having a noise reduction function.

In modern society, the progress of science and technology has brought convenience to mankind, followed by various forms of pollution. Among them, the most relevant to life is air pollution.

Air pollution refers to the pollution of ambient air caused by substances that endanger human health or the surrounding environment. These pollutants may be gases, solids, or liquid suspended matter, etc., causing damage to the respiratory system as a result of human breathing, or more direct, obscuring the line of sight and creating various unexpected hazards (eg, haze). , PM2.5). Air pollution in the overall environment is difficult to handle by personal ability. Therefore, most people choose to purchase air purifiers at home, work, and schools, or even carry-on air purifiers. In addition to breathing clean air, it can also reduce Allergens in the air.

However, there is also a kind of pollution that is often overlooked, that is, noise pollution. The sources of noise pollution are very diverse, including construction, car horns, machine operation, or aircraft passing. Frequent noise, if the volume is too loud, may have an impact on hearing, or even a physiological discomfort, and sudden noise can be frightening or transient hearing damage.

Among them, in the nighttime quiet sleep time, whether it is frequent or sudden noise, it may affect sleep, such as washing machine running in the middle of the night, dog bark, baby crying, home appliances running sound Or the sound of a steam locomotive that whizzes past, may cause poor sleep quality or wake up in the middle of the night, which will have a negative impact on physical and psychological. To this end, people began to use noise reducers to maintain their sleep quality. The function of the noise reducer is to provide white noise. White noise is a continuous and stable noise in a specific frequency range, which can eliminate other noises and have a calming effect.

The existing noise reducer and the air cleaner are independent of each other. If it is desired to clean the air at the same time and reduce the noise, it needs to be purchased separately. To solve this problem, the present invention provides an air cleaner with a noise reduction function, which is cleaned in air. When the machine is running, its frequency and volume are controlled by the software, or it is assisted by the speaker to obtain appropriate white noise, and then the air can be cleaned at the same time, and the noise can be reduced.

Based on the above object, the present invention provides an air cleaner with a noise reduction function, which comprises a casing, an air filter module and a noise reduction module. The outer casing is provided with a first air inlet and a first air outlet. The air filter module comprises: a second air inlet connected to the first air inlet, introducing air to be filtered from the first air inlet; a filtering device coupled to the first air inlet, and filtering the The air to be filtered is used to generate filtered air; the motor is disposed in the air filter module to drive the gas flow in the air filter module; the second air outlet is connected to the filter device and the first air outlet, The filtered air exits the outside of the enclosure. The noise reduction module comprises: an input interface for the user to operate to generate a first input signal; the processor receives the first input signal from the input interface and generates a first output signal; the controller receives the The first output signal controls the operation of the motor based on the first output signal to generate white noise.

Preferably, the housing may further include a speaker to increase the white noise generated by the motor.

Preferably, the noise reduction module further comprises a memory, wherein the memory stores a plurality of sound data, and the processor responds to the first input signal, outputs the first output signal, and reads the sound from the memory through the controller. Data and play the corresponding sound data.

Preferably, the air cleaner with noise reduction function further comprises a sound receiver, and the sound receiver receives the external sound to generate a second input signal and transmits the second input signal to the processor.

Preferably, the processor generates a second output signal to the controller in response to the second input signal, and the controller controls the operation mode of the motor in response to the second output signal.

Preferably, a negative ion generator may be further included between the filtering device and the second gas outlet.

100‧‧‧ Shell

101‧‧‧first air inlet

102‧‧‧First air outlet

200‧‧‧ Noise Reduction Module

201‧‧‧Input interface

202‧‧‧Speakers

211‧‧‧ processor

212‧‧‧ Controller

213‧‧‧ memory

214‧‧‧Audio

300‧‧‧Air filter module

301‧‧‧second air inlet

302‧‧‧Second air outlet

303‧‧‧Filter device

304‧‧‧Motor

305‧‧‧ Negative ion generator

400‧‧‧Air to be filtered

401‧‧‧ filtered air

Steps S701, S702, S703, S704, S801, S802, S803, S804, S805‧‧

Figure 1 is a block diagram of the air purifier with noise reduction function of the present invention.

Fig. 2 is a flow chart showing the white noise generated by the user's operation of the air cleaner having the noise reduction function of the present invention.

Figure 3 is a block diagram showing another embodiment of the air cleaner having the noise reduction function of the present invention.

Figure 4 is a flow chart of the white noise generated by the air purifier with the noise reduction function of the present invention.

Fig. 5 is a schematic view showing the comparison between white noise and environmental noise generated by the operation of the motor of the air cleaner having the noise reduction function of the present invention.

Fig. 6 is a schematic view showing the comparison between the white noise generated by the operation of the motor of the air cleaner having the noise reduction function of the present invention and the ambient noise after being amplified by the speaker.

Figure 7 is a schematic diagram showing the comparison of sound data and environmental noise stored in the memory of the air cleaner having the noise reduction function of the present invention.

In order to understand the technical features, the contents and advantages of the present invention and the effects thereof, the present invention will be described in detail with reference to the accompanying drawings, and the drawings The use of the present invention for the purpose of illustrating and assisting the specification is not necessarily the true proportion and precise configuration of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. Narration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the air cleaner having the noise reduction function according to the present invention will be described with reference to the related drawings. For the sake of understanding, the same components in the following embodiments are denoted by the same reference numerals.

First, please refer to FIG. 1 and FIG. 2, which is a block diagram of the air purifier with the noise reduction function of the present invention. Fig. 2 is a flow chart showing the white noise generated by the user's operation of the air cleaner having the noise reduction function of the present invention.

As shown in FIG. 1 , the present invention provides an air cleaner with a noise reduction function, including a housing 100, a noise reduction module 200, and an air filter module 300. The outer casing 100 is provided with a first air inlet 101 and a first air outlet 102. The air filter module 300 includes a second air inlet 301 coupled to the first air inlet 101 to introduce air to be filtered 400 from the first air inlet 101, and a filtering device 303 disposed at the second air inlet Between the 301 and the second air outlet 302, the air to be filtered 400 introduced from the second air inlet 301 is filtered, and the filtered air 401 is generated. The motor 304 is installed in the air filter module 300 to drive the air filter. The gas flow in the module 300; and the second air outlet 302 is connected to the filter device 303 and the first air outlet 102, The filtered air 401 exits the outer casing 100 through the first air outlet 102. Referring to FIG. 2, the noise reduction module 200 includes an input interface 201 for the user to operate and generates a first input signal in response to the operation; the processor 211 receives the first input signal from the input interface 201, and generates the first An output signal; the controller 212 receives the first output signal and, in response to the first output signal, controls the operation of the motor 304 to generate white noise.

Referring next to Fig. 3, Fig. 3 is a block diagram showing another embodiment of the air cleaner having the noise reduction function of the present invention.

In this embodiment, the air cleaner of the air cleaner having the noise reduction function provided by the present invention may further include a speaker 202. When the operation sound of the motor 304 is insufficient to meet the demand, the sound is amplified through the speaker 202 to achieve the target. volume.

The noise reduction module 200 can further include a memory 213. The memory 213 stores various different sound data. When the user operates the input interface 201, the first input signal is generated, and the processor 211 receives the first input signal. Thereafter, a first output signal is generated, and the controller 212 receives the first output signal, reads the sound data from the memory 213, and plays it through the speaker 202.

Referring to FIG. 4, FIG. 4 is a flow chart of the white noise generated by the air purifier with the noise reduction function of the present invention.

As shown in FIG. 4, in this embodiment, the air cleaner with noise reduction function provided by the present invention may further include a sound receiver 214, and after receiving the external sound, the sound receiver 214 generates a second input signal, and The second input signal is transmitted to the processor 211. After receiving the second input signal, the processor 211 generates a second output signal. After receiving the second output signal, the controller 212 controls the operation mode of the motor 304 in response to the second output signal. The processor 211 stores a reference value of white noise during the operation of the motor 304. When the volume of white noise generated when the motor 304 is operated is insufficient, the speaker 202 is enlarged.

In still another embodiment, the filter device 303 of the air cleaner having the noise reduction function provided by the present invention and the second air outlet 302 may further include a negative ion generator 305, and the negative ion generated by the negative ion is further improved. .

Referring to Figures 5-7, Figure 5 is a schematic diagram comparing white noise and ambient noise generated by the operation of the motor of the air cleaner with noise reduction function of the present invention. Fig. 6 is a schematic view showing the comparison between the white noise generated by the operation of the motor of the air cleaner having the noise reduction function of the present invention and the ambient noise after being amplified by the speaker. Figure 7 is a schematic diagram showing the comparison of sound data and environmental noise stored in the memory of the air cleaner having the noise reduction function of the present invention.

As shown in Fig. 5, the ambient noise is compared with the white noise generated by the motor 304. The amplitude of the ambient noise is large, and there is an unexpected surge, that is, sudden noise, and white noise is compared with it. The volume is relatively stable. When the volume of the white noise is significantly lower than the ambient noise, the volume of the white noise can be increased by the user operating the steps shown in FIG. 3, or can be accepted by the radio 214 through the steps shown in FIG. The ambient noise level is used to automatically adjust the volume of white noise. The adjusted volume is shown in Figure 6. The white noise in this case can alleviate the impact of sudden noise on people, and can improve the user's sleep quality when used during sleep time.

Figure 7 shows a comparison of ambient noise and sound data. The sound data provided in advance is similar to the white noise generated by the motor, has a relatively stable volume, and can select appropriate sound data according to the user's preference. Rain, wave sounds, radio noise, wind sounds, etc., can also alleviate the impact of environmental noise on people and improve the sleep quality of users.

According to the above technical features, the air cleaner of the present invention can provide white noise through the noise reduction module in addition to providing clean air through the air filter module, thereby providing a better user. Sleep quality.

Claims (3)

An air purifier with a noise reduction function includes: a casing having a first air inlet and a first air outlet; and an air filter module comprising: a second air inlet connected to the air inlet a first air inlet, introducing a filter to be filtered; a filtering device coupled to the second air inlet, and filtering the air to be filtered to generate a filtered air; a motor is disposed in the air filter module Driving a gas flow in the air filter module; and a second air outlet connecting the filter device and the first air outlet to discharge the filtered air out of the outer casing; a noise reduction module, including An input interface for the user to operate to generate a first input signal; a processor receiving the first input signal from the input interface to generate a first output signal; and a controller receiving the a first output signal, in response to the first output signal, controlling an operation mode of the motor to generate a white noise; and a sound receiver for receiving an external sound and generating a second input signal, and the second input signal Sent to the processor; wherein the processor in response to the second input signal, and generating a second output signal transmitted to the controller in response to the second output signal, controlling the This mode of operation of the motor produces this white noise and the white noise is amplified by a speaker on the housing. The air cleaner of the noise reduction function of claim 1, wherein the noise reduction module further comprises a memory, the memory stores a plurality of sound data, and the processor is responsive to the first input The signal, after outputting the first output signal, reads the sound data from the memory through the controller, and plays the sound data with the speaker. An air cleaner having a noise reduction function according to claim 1, wherein an negative ion generator is disposed between the filter device and the second air outlet.