Suction device having a low-noise structure

Abstract

The present invention provides a suction device for aspirating body fluids, comprising: a suction part having a suction nozzle that aspirates body fluids through suction pressure and a body fluid receiving space for receiving body fluids aspirated by the suction nozzle; a housing formed with a grippable outer shape and detachably coupled to the suction part, having a suction motor built in and a suction passage connected to the suction part, providing suction pressure by the suction motor through the suction passage, and having an exhaust passage on the opposite side of the suction passage; a control part that controls the operation of the suction motor and adjusts the intensity of the suction pressure; and a noise damping member provided in the housing that fixes the suction motor to the housing while separating the suction motor from the inner surface of the housing and dampens vibrations or noise generated by the suction motor.

Description

Technology Field

[0001] The embodiments disclosed in this specification relate to a suction device capable of sucking and collecting bodily fluids such as nasal mucus or sebum, and more specifically, to a suction device having a low-noise structure capable of attenuating noise generated by suction pressure. Background Technology

[0003] Typically, infants and the elderly have relatively weak resistance, making them susceptible to respiratory viral diseases such as the common cold during the winter or transitional seasons, and they are also easily susceptible to diseases such as COVID-19 and the flu, which have recently become prevalent.

[0004] The common cold, a representative respiratory disease, is generally accompanied by a runny nose or nasal congestion; in this case, removing impurities from inside the nose and cooling the nose can help reduce inflammation.

[0005] Here, if you try to manage the constant runny nose caused by nasal disease with tissues, it can lead to increased pressure in the ears and eyes, causing secondary pain and potentially causing inflammation inside the nose. If inflammation occurs inside the nose, the act of managing the runny nose itself causes severe pain.

[0006] Accordingly, recently, nasal mucus is being removed by suctioning it from the nose using a device such as the ‘portable nasal aspirator’ disclosed in Korean registered patent No. 10-0367664.

[0007] The suction device of the prior art comprises a case having a storage space, a driving source driven by a battery placed inside the case, a power transmission means for converting the rotational motion of the driving source into linear motion, a vacuum generating means connected to the power transmission means, a nasal mucus storage container connected to the vacuum generating means by a conduit, a nasal mucus guide member coupled to the inside of the nasal mucus storage container to guide the sucked-in nasal mucus into the storage container, a suction port coupled to the outside of the nasal mucus storage container, and an operating means coupled to the vacuum generating means, and is configured to suck in nasal mucus through the negative pressure formed in the nasal mucus storage container by operating the driving source.

[0008] However, the aforementioned prior art has a problem in that the suction pressure cannot be controlled, which can lead to reduced suction efficiency as the pressure inside the nasal cavity becomes excessively high or low. In particular, since the nasal mucosa of infants is sensitive, applying excessive suction pressure can cause not only pain but also damage to the mucosa.

[0009] Meanwhile, pressure fluctuations occur depending on the seal of the suction nozzle during the process of suctioning nasal mucus. The prior art has a configuration that cannot detect changes in suction pressure, and furthermore, since the rotational speed of the suction motor cannot be adjusted in accordance with changes in suction pressure, there is a problem in that the suction pressure cannot be uniformly controlled.

[0010] In addition, the prior art has the problem of causing aversion in infants because noise caused by suction pressure or vibration caused by the suction motor occurs during the suction process.

[0011] Therefore, technology was needed to solve the aforementioned problems.

[0012] Meanwhile, the aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot be considered as prior art disclosed to the general public prior to the filing of the present invention. The problem to be solved

[0014] The embodiments disclosed in this specification are intended to provide a suction device having a low-noise structure capable of dampening vibration or noise caused by a suction motor while suctioning bodily fluids such as nasal mucus or sebum.

[0015] In addition, the embodiments disclosed in this specification aim to provide a suction device having a low-noise structure capable of damping vibration or noise caused by a suction motor by buffering vibration while keeping the suction motor, which provides suction pressure, spaced apart from the housing.

[0016] In addition, the embodiments disclosed in this specification aim to provide a suction device having a low-noise structure capable of attenuating noise caused by suction pressure by expanding a part of the suction path to smooth the airflow.

[0017] In addition, the embodiments disclosed in this specification aim to provide a suction device having a low-noise structure that can detect changes in pressure by measuring the suction pressure acting on the suction path in real time, maintain the suction pressure at the target pressure by adjusting the rotational speed of the suction motor while comparing the measured suction pressure with the target pressure, and ensure safety by preventing an excessive rise in suction pressure. means of solving the problem

[0019] As a technical means for achieving the technical problem described above, a suction device having a low-noise structure according to one embodiment may include: a suction device for suctioning body fluid, a suction nozzle that sucks body fluid through suction pressure, and a suction part provided with a body fluid receiving space for receiving body fluid sucked by the suction nozzle; a housing formed with a grippable outer shape and detachably coupled to the suction part, having a suction motor built in and a suction passage connected to the suction part, providing suction pressure by the suction motor through the suction passage, and having an exhaust passage provided on the opposite side of the suction passage; a control part that controls the operation of the suction motor and adjusts the intensity of the suction pressure; and a noise damping member provided in the housing that fixes the suction motor to the housing, while separating the suction motor from the inner surface of the housing and dampening vibration or noise generated by the suction motor.

[0020] Additionally, the noise damping member may include: a housing slot formed in a groove shape on the inner circumference of the housing to provide a fastening portion; a motor slot formed in a groove shape on the outer circumference of the suction motor to provide a fastening portion; and an elastic block having both longitudinal ends fastened to the housing slot and the motor slot, respectively, thereby fixing the suction motor to the inner circumference of the housing in a spaced-apart manner, and being made of an elastically deformable material to dampen vibrations or noise transmitted to the housing while allowing movement of the suction motor during operation.

[0021] Additionally, the housing may further include a buffer chamber formed in an expanded state in at least one part of the intake passage or the exhaust passage to provide an expanded space for the airflow and attenuate noise caused by the airflow.

[0022] Additionally, the housing may further include a sound-absorbing material provided along the inner wall of the intake passage to attenuate noise caused by the airflow, and the intake passage may be curved to have a predetermined bend to move the airflow along the bend.

[0023] In addition, the suction device may further include a pressure sensor that measures the suction pressure of the suction path of the housing and provides it to the control unit.

[0024] In addition, the control unit can adjust the rotational speed of the suction motor while comparing the suction pressure measured by the pressure sensor with the target pressure.

[0025] In addition, the control unit can set the target pressure differently depending on the user.

[0026] In addition, the control unit may set an upper limit pressure of the suction pressure measured by the pressure sensor, and stop the operation of the suction motor when the suction pressure reaches the upper limit pressure. Effects of the invention

[0028] According to any one of the aforementioned means for solving the problem, a suction device having a low-noise structure capable of dampening vibrations or noise caused by a suction motor through a noise damping member while suctioning bodily fluids such as nasal mucus or sebum can be presented.

[0029] In addition, according to any one of the aforementioned means for solving the problem, a suction device having a low-noise structure capable of damping vibration or noise caused by a suction motor can be presented by allowing flow while keeping the suction motor separated from the housing through an elastic block constituting a noise damping member and cushioning the vibration.

[0030] In addition, according to any one of the aforementioned means for solving the problem, a buffer chamber formed in a part of the intake passage can expand a part of the intake passage to smooth the airflow, thereby attenuating noise caused by intake pressure.

[0031] In addition, according to any one of the aforementioned means for solving the problem, the control unit can detect changes in pressure by measuring the suction pressure acting on the suction path in real time through a pressure sensor, and can maintain the suction pressure at a constant target pressure by adjusting the rotational speed of the suction motor while comparing the measured suction pressure with the target pressure, thereby enabling stable suction even with changes in the amount or viscosity of the inhaled body fluid.

[0032] In addition, the control unit sets the upper limit pressure measured by the pressure sensor, and by stopping the operation of the suction motor when the suction pressure reaches the upper limit pressure, safety accidents caused by excessive suction pressure can be prevented.

[0033] The effects obtainable from the disclosed embodiments are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the disclosed embodiments belong from the description below. Brief explanation of the drawing

[0035] FIG. 1 is a cross-sectional view showing the configuration of a suction device having a low-noise structure according to one embodiment. FIGS. 2 to 4 are cross-sectional views showing the configuration of a suction device having a low-noise structure according to another embodiment. FIG. 5 is a block diagram showing the configuration of a suction device having a low-noise structure according to one embodiment. Specific details for implementing the invention

[0036] Various embodiments are described in detail below with reference to the attached drawings. The embodiments described below may be implemented in various different forms. In order to explain the features of the embodiments more clearly, detailed descriptions of matters widely known to those skilled in the art to which the following embodiments belong have been omitted. Additionally, parts of the drawings unrelated to the description of the embodiments have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0037] Throughout the specification, when a configuration is described as being "connected" to another configuration, this includes not only cases where they are "directly connected," but also cases where they are "connected with another configuration in between." Furthermore, when a configuration is described as "including" another configuration, this means that, unless specifically stated otherwise, it does not exclude other configurations but may include additional configurations.

[0038] The embodiments will be described in detail below with reference to the attached drawings.

[0039] FIG. 1 is a cross-sectional view showing the configuration of a suction device having a low-noise structure according to one embodiment, FIG. 2 to 4 are cross-sectional views showing the configuration of a suction device having a low-noise structure according to another embodiment, and FIG. 5 is a block diagram showing the configuration of a suction device having a low-noise structure according to one embodiment.

[0040] A suction device (10) having a low-noise structure according to one embodiment is a device capable of sucking up bodily fluids such as nasal mucus or secretions such as sebum and collecting them, and is capable of attenuating noise generated by suction pressure during the suction process.

[0041] Here, the suction device (10) having a low-noise structure according to one embodiment may be implemented in a form that is portable by the user or in a stationary form for use at home.

[0042] Specifically, a suction device (10) having a low-noise structure according to one embodiment may be configured to include a suction unit (100), a housing (200), a suction motor (300), a control unit (400), and a noise damping member (500), as shown in FIG. 1.

[0043] The above suction unit (100) is configured to suck up body fluids or secretions through suction pressure and expel them from the body. For example, the suction unit (100) can suck up body fluids such as nasal mucus and can suck up and collect secretions such as sebum under the skin.

[0044] This suction unit (100) is equipped with a suction nozzle (110) at its tip (upper part in the drawing) to suction body fluids or secretions, and a body fluid receiving space (120) of a certain size is formed behind the suction nozzle (110) to collect body fluids or secretions sucked by the suction nozzle (110) in the body fluid receiving space (120).

[0045] Here, the suction nozzle (110) can be inserted into the nose when suctioning bodily fluids such as nasal mucus, and can be attached to the skin when suctioning secretions such as sebum.

[0046] Additionally, the suction nozzle (110) may be configured to be detachable from the main body of the suction unit (100) forming the body fluid receiving space (120) to perform the function of opening and closing the body fluid receiving space (120), or alternatively, it may be manufactured as a single unit with the main body of the suction unit (100).

[0047] Meanwhile, the suction unit (100) has a partition wall (121) formed to partition the body fluid collection space (120) from the suction channel (210) described later, and a check valve (130) is installed in a part of the partition wall (121) to provide the suction pressure of the suction channel (210) to the suction nozzle (110) while preventing body fluid from flowing into the suction channel (210).

[0048] For example, the check valve (130) may be formed in the form of a filter that allows gas to pass through while blocking the passage of liquid or solid, or alternatively, it may be formed in the form of a diaphragm or a blocking wing that prevents the body fluid collected in the body fluid collection space (120) from flowing into the opposite side of the partition (121).

[0049] The above housing (200) is a component that forms the body of the suction device (10), and is configured to have a suction motor (300) and a control unit (400) built in, and a battery (350) built in to supply power to the suction motor (300) and to provide suction pressure to the suction unit (100).

[0050] Specifically, the housing (200) is formed with a grippable shape having an internal installation space and can be detachably coupled to the suction unit (100), and a suction motor (300) and a battery (350) operated by the control of the control unit (400) are built into the installation space to provide suction pressure by the suction motor (300) to the suction unit (100).

[0051] This housing (200) can be manufactured in a form that is portable and can be held by the user, and can be manufactured in a form that is portable and can be held.

[0052] For example, the housing (200) may be manufactured in a cylindrical shape having a grippable outer diameter and formed in a roughly pistol shape so that the suction part (100) can be attached to the user's suction area while being gripped by the user.

[0053] Here, the housing (200) has a suction channel (210) formed at one end (top end in the drawing) of the longitudinal direction of the installation space of the suction motor (300), which is connected to the suction part (100) to provide suction pressure from the suction motor (300) to the suction part (100), and an exhaust channel (220) is formed on the opposite side of the suction channel (210) to discharge the airflow that has entered the suction channel (210) by the suction motor (300).

[0054] The above suction motor (300) is composed of an electric motor and a fan or impeller that rotates by the electric motor, and can provide suction pressure through the rotation of the fan / impeller.

[0055] The above control unit (400) can control the operation of the suction motor (300) to perform suction of body fluid through the suction unit (100) and adjust the intensity of the suction pressure by the suction motor (300).

[0056] This control unit (400) can control the operation of the suction motor (300) by measuring the suction pressure of the suction channel (210) through a pressure sensor (450) installed in the suction channel (210) as shown in FIG. 4.

[0057] Specifically, the control unit (400) can adjust the intensity of the suction pressure by comparing the suction pressure of the suction path (210), measured through the pressure sensor (450), with a set target pressure and adjusting the rotational speed of the suction motor (300) according to the comparison result.

[0058] By calculating the difference (ΔP) between the suction pressure and the target pressure measured by the pressure sensor (450), if the difference (ΔP) is a positive value, it is determined that the suction pressure is weak and the rotational speed of the suction motor (300) is increased, and if the difference (ΔP) is a negative value, it is determined that the suction pressure is strong and the rotational speed of the suction motor (300) is decreased, the suction pressure can be adjusted to the target pressure.

[0059] Additionally, the control unit (400) can adjust the suction pressure by the suction motor (300) by setting the target pressure differently according to the user's age or gender, etc. That is, the control unit (400) can provide a suction pressure suitable for the user by setting the target pressure differently for when the user is an infant and when the user is an adult.

[0060] Additionally, the control unit (400) can set an upper limit pressure for the suction pressure measured by the pressure sensor (450), and when the suction pressure of the suction path (210) measured by the pressure sensor (450) reaches the upper limit pressure, the operation of the suction motor (300) can be stopped to prevent safety accidents caused by excessive suction pressure.

[0061] This control unit (400) is composed of a conventional information processing device capable of information processing such as data collection and computation, and can be embedded in the installation space of the housing (200).

[0062] Specifically, the control unit (400) may be configured to include an input / output unit (410), a memory (420), a communication unit (430), and a controller (440) as shown in FIG. 5.

[0063] The input / output unit (410) may include an input unit for receiving input from a user and an output unit for displaying the operating status of the suction motor (300) or the suction pressure or target pressure measured by the pressure sensor (450), and may be installed on a part of the outer surface of the housing (200).

[0064] For example, the input unit may include an operation panel that receives user input, and the output unit may include a display unit that displays the measured value from the pressure sensor (450) and the target pressure, upper limit pressure, or operating status of the suction motor (300) input through the input unit.

[0065] In addition, the input unit may include devices capable of receiving various forms of user input, such as a keyboard, physical buttons, a touch screen, a camera, or a microphone.

[0066] Various types of data, such as files, applications, and programs, can be installed and stored in the memory (420), and data regarding the target pressure and upper limit pressure input through the input section and data regarding the suction pressure obtained from the pressure sensor (450) can be stored.

[0067] Additionally, the memory (420) may store a program that can adjust the rotational speed of the suction motor (300) through the difference between the suction pressure and the target pressure obtained from the pressure sensor (450).

[0068] The controller (440) can control the overall operation of the suction motor (300) and the pressure sensor (450), and may include a processor such as a CPU, GPU, etc.

[0069] Additionally, the controller (440) may execute a program stored in memory (420), read data regarding the target pressure or upper limit pressure among the information stored in memory (420), or store new data obtained from the pressure sensor (450) in memory (420).

[0070] Additionally, the control unit (400) may perform wired or wireless communication with another device, such as a user's smartphone, or a network through the configuration of the communication unit (430).

[0071] To this end, the communication unit (430) may include a communication module that supports at least one of various wired and wireless communication methods. For example, the communication module may be implemented in the form of a chipset.

[0072] Here, the wireless communication supported by the communication unit (430) may be, for example, Wi-Fi (Wireless Fidelity), Wi-Fi Direct, Bluetooth, Ultra Wide Band (UWB), or Near Field Communication (NFC). Additionally, the wired communication supported by the communication unit may be, for example, USB or HDMI (High Definition Multimedia Interface).

[0073] The above noise damping member (500) is configured to dampen vibrations or noise generated by the suction motor (300) by fixing the suction motor (300) to the housing (200) while keeping the suction motor (300) spaced apart from the inner surface of the housing (200).

[0074] Specifically, the noise damping member (500) may be configured to include a housing slot (510), a motor slot (520), and an elastic block (530) as shown in FIGS. 1 to 4.

[0075] The housing slot (510) may be formed in a groove shape on the inner surface of the housing (200) to provide a fastening portion. For example, the housing slot (510) may be formed in a pair of angle shapes on the inner surface of the housing (200) to provide a fastening portion for the elastic block (530) described later, and may be composed of multiple slots and each provided at a position corresponding to the upper, lower, left, and right sides of the suction motor (300).

[0076] The motor slot (520) may be formed in a groove shape on the outer surface of the suction motor (300) to provide a fastening portion. For example, the motor slot (520) may be formed in a pair of angle shapes on the outer surface of the suction motor (300) to provide a fastening portion of the elastic block (530), and may be composed of multiple slots and provided on the upper, lower, left, and right sides of the suction motor (300).

[0077] That is, the housing slot (510) and the motor slot (520) can be provided on the upper, lower, left, and right sides of the suction motor (300), respectively, as a pair facing each other to form a set.

[0078] The above elastic block (530) is configured to dampen vibrations or noise of the suction motor (300) transmitted to the housing (200) when the suction motor (300) is operated by fixing the suction motor (300) to the inner circumference of the housing (100) in a spaced-apart state and allowing the suction motor (300) to move when the suction motor (300) is operated.

[0079] Specifically, the elastic block (530) is formed of a material capable of elastic deformation when an external force is applied, and both ends in the longitudinal direction are connected to the housing slot (510) and the motor slot (520), respectively, thereby allowing the suction motor (300) to be fixed in a spaced position on the inner circumference of the housing, and when the suction motor (300) operates, vibration or noise can be dampened through elastic deformation while allowing movement of the suction motor (300) due to vibration generated by the suction motor (300).

[0080] That is, the elastic block (530) can cushion the transmission of vibration or noise caused by the suction motor (300) to the housing (200) by providing elastic force while fixing the suction motor (300) to the inner circumference of the housing (200) in a spaced-apart state.

[0081] Meanwhile, as shown in FIG. 2, the housing (100) has a buffer chamber (211) formed in a part of the suction channel (210) to provide an expansion space for the airflow due to the suction pressure and to attenuate noise caused by the airflow due to the suction pressure.

[0082] This buffer chamber (211) is formed in an expanded shape that expands a part of the intake passage (210) or exhaust passage (220) to provide an expansion space for the airflow, and thereby, when the intake motor (300) is operated, the airflow spreads into the expansion space due to the intake pressure and becomes smooth, thereby attenuating the noise caused by the airflow of the intake pressure.

[0083] Additionally, the buffer chamber (211) is formed in a shape such as a Helmholtz resonator in a part of the intake passage (210) so that a resonance phenomenon can occur, thereby attenuating noise of a specific frequency generated in the intake passage (210).

[0084] Meanwhile, as shown in FIG. 3, the housing (200) can move airflow by suction pressure along the curve by bending the suction channel (210) so that the suction channel (210) has a predetermined curve, and at this time, noise caused by the airflow can be attenuated through the sound-absorbing material (210) provided along the inner wall of the suction channel (210).

[0085] For example, the sound-absorbing material (210) is formed from a porous material such as expanded urethane, sponge, melamine foam, glass wool, or rock wool and is bonded along the inner wall of the suction channel (210) so as to absorb and attenuate the noise of the airflow moving along the curve of the suction channel (210).

[0086] Additionally, the sound-absorbing material (210) may be formed in the shape of a panel with a resonance capable of absorbing sound of a specific frequency, thereby attenuating noise of a specific frequency generated in the intake channel (210).

[0087] The operation and function of a suction device (10) having a low-noise structure according to one embodiment including the components as described above will be explained.

[0088] When suctioning nasal mucus or sebum, the user can set the target pressure and upper limit pressure of the suction motor (300) through the input / output unit (410). At this time, the control unit (400) can allow the user to select the user's age through the input / output unit (410) by setting the target pressure and upper limit pressure differently depending on the user's age.

[0089] When the target pressure and upper limit pressure for the suction pressure of the suction motor (300) are set, the user grasps the housing (200), presses the suction nozzle (110) of the suction unit (100) against the suction area, and then operates the suction motor (300) through the switch of the input / output unit (410).

[0090] The suction motor (300) is operated by the control unit (400) and provides suction pressure to the suction unit (100) through the suction channel (210), thereby allowing nasal mucus or sebum to be collected into the body fluid collection space (1200) through the suction nozzle (110).

[0091] Here, the suction motor (300) is installed in a spaced-apart state from the inner surface of the housing (200) through the housing slot (510), motor slot (520), and elastic block (530) constituting the noise damping member (500), and by allowing movement due to the elastic deformation of the elastic block (530), vibrations or noise generated during operation are not transmitted to the housing (200) but are buffered and dampened.

[0092] Additionally, the suction channel (210) can dampen the airflow of suction pressure caused by the operation of the suction motor (300) through the buffer chamber (211) to attenuate the noise, or absorb it through the sound-absorbing material (212).

[0093] The control unit (400) can adjust the intensity of the suction pressure to match the target pressure by comparing the suction pressure of the suction path (210), measured by the pressure sensor (450) when the suction motor (300) is operated, with the set target pressure and adjusting the rotational speed of the suction motor (300) according to the comparison result.

[0094] In addition, the control unit (400) can prevent safety accidents caused by excessive suction pressure by stopping the operation of the suction motor (300) when the suction pressure of the suction path (210) measured by the pressure sensor (450) reaches the upper limit pressure.

[0095] When the suction of nasal mucus or sebum is completed, the suction motor (300) is stopped and the suction unit (100) is separated from the housing (200), and the suction unit (100) is cleaned while discharging the collected bodily fluid from the bodily fluid collection space (120).

[0096] As described above, the suction device (10) having a low-noise structure according to one embodiment can dampen vibration or noise caused by the suction motor (300) by allowing flow while separating the suction motor (300) from the housing (200) through an elastic block (530) constituting a noise damping member (500), and the control unit (400) can maintain the suction pressure at a constant target pressure by measuring the suction pressure acting on the suction path (210) in real time through a pressure sensor (450) and comparing it with the target pressure while adjusting the rotational speed of the suction motor (300).

[0097] In addition, the suction device (10) having a low-noise structure according to one embodiment can be applied not only to portable devices but also to stationary suction devices used at home.

[0098] The embodiments described above are for illustrative purposes only, and those skilled in the art will understand that the embodiments described above can be easily modified into other specific forms without altering the technical concept or essential features of the embodiments described above. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0099] The scope of protection sought through this specification is defined by the claims set forth below rather than by the detailed description above, and should be interpreted to include all modifications or variations derived from the meaning and scope of the claims and the concept of equivalents. Explanation of the symbols

[0101] 10: Suction device with low-noise structure 100 : Suction part 110 : Suction nozzle 120: Fluid storage space 130 : Check valve 200 : Housing 210 : Intake path 211 : Buffer chamber 212 : Sound-absorbing material 215 : Helmholtz Resonator 220 : Exhaust passage 300 : Intake motor 350 : Battery 400 : Control unit 410 : Input / Output Section 420 : Memory 430 : Communications Department 440 : Controller 450 : Pressure sensor 500 : Noise damping member 510 : Housing Slot 520 : Motor Slot 530 : Elastic block

Claims

Claim 1 A suction device for aspirating body fluids comprises: a suction nozzle for aspirating body fluids through suction pressure, and a suction part having a body fluid receiving space for receiving the body fluid aspirated by the suction nozzle; a housing formed with a grippable outer shape and detachably coupled to the suction part, having a suction channel connected to the suction part and having a suction motor built in, providing suction pressure by the suction motor through the suction channel, and having an exhaust channel on the opposite side of the suction channel, and including a buffer chamber formed in the shape of a Helmholtz resonator capable of causing a resonance phenomenon in a part of the suction channel to attenuate noise of a specific frequency generated in the suction channel; a control part for controlling the operation of the suction motor and adjusting the intensity of the suction pressure; and a noise damping member provided in the housing to fix the suction motor to the housing, while separating the suction motor from the inner surface of the housing and attenuating vibration or noise generated by the suction motor. A suction device having a low-noise structure, comprising a pressure sensor that measures the suction pressure of the suction passage of the housing and provides it to the control unit, wherein the control unit receives the age of a user through an input / output unit, sets a target pressure and an upper limit pressure according to the selected user's age, and compares the suction pressure measured by the pressure sensor with the target pressure to adjust the rotational speed of the suction motor, and stops the operation of the suction motor when the suction pressure reaches the upper limit pressure. Claim 2 A suction device having a low-noise structure, wherein the noise damping member comprises: a housing slot formed in a groove shape on the inner circumference of the housing to provide a fastening portion; a motor slot formed in a groove shape on the outer circumference of the suction motor to provide a fastening portion; and an elastic block having both longitudinal ends fastened to the housing slot and the motor slot, respectively, thereby fixing the suction motor to the inner circumference of the housing in a spaced-apart state, and being made of an elastically deformable material to dampen vibration or noise transmitted to the housing while allowing movement of the suction motor during operation of the suction motor. Claim 3 delete Claim 4 A suction device having a low-noise structure according to claim 1, wherein the housing is curved so that the suction channel has a predetermined bend to move the airflow along the bend, and further includes a sound-absorbing material provided along the inner wall of the suction channel to attenuate noise caused by the airflow. Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete

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