CN113081593B - Noise reduction closed cabin and breathing auxiliary system - Google Patents
Noise reduction closed cabin and breathing auxiliary system Download PDFInfo
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- CN113081593B CN113081593B CN202110260229.9A CN202110260229A CN113081593B CN 113081593 B CN113081593 B CN 113081593B CN 202110260229 A CN202110260229 A CN 202110260229A CN 113081593 B CN113081593 B CN 113081593B
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- accommodating cavity
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
- A61G10/023—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure
- A61G10/026—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure for hyperbaric oxygen therapy
Abstract
The application relates to the technical field of closed cabins, and discloses a make an uproar closed cabin and breathing auxiliary system fall, wherein fall the airtight cabin of making an uproar and include: a vortex-shaped accommodating cavity is arranged inside the main cabin body, and a human body inlet is formed in the main cabin body; the vortex-shaped outer side of the accommodating cavity is communicated with the external environment through a human body inlet; the human body supporting device is arranged in the accommodating cavity; the cabin cover is movably arranged on the main cabin body; the passive noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for passively absorbing noise in the accommodating cavity; the active noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for neutralizing the noise in the accommodating cavity by adopting reverse-phase sound waves equal to the noise in the accommodating cavity; the cross-sectional area of the accommodating cavity at the first position is larger than or equal to that of the accommodating cavity at the second position, and the first position is positioned between the human body inlets at the second position. Thereby reducing the difficulty of eliminating noise and improving the noise reduction effect.
Description
Technical Field
The application relates to the technical field of closed cabins, in particular to a noise reduction closed cabin and a breathing auxiliary system.
Background
The closed chamber is a frequently used chamber body, for example, a high pressure oxygen chamber and a medium pressure closed chamber need to be used. After noise in the external environment or noise generated by the closed cabin enters the cavity of the closed cabin, the noise stays in the cavity of the closed cabin and is difficult to eliminate, so that user experience of a user in the closed cabin is influenced.
Disclosure of Invention
The main purpose of this application is to provide a make an uproar airtight cabin and breathing auxiliary system falls, after aiming at solving the noise of prior art in external environment or the noise that airtight cabin itself produced gets into the cavity of airtight cabin, the noise will stop to be difficult to eliminate in the cavity of airtight cabin to user's in airtight cabin user experience technical problem has been influenced.
In order to achieve the above object, the present application provides a noise reduction capsule, comprising: the device comprises a main cabin body, a human body supporting device, a cabin cover, an active noise reduction device and a passive noise reduction device;
a vortex-shaped accommodating cavity is arranged inside the main cabin body, and a human body inlet is formed in the main cabin body;
the spiral outer side of the accommodating cavity is communicated with the external environment through the human body inlet;
the human body supporting device is arranged in the accommodating cavity;
the cabin cover is movably arranged on the main cabin body and is used for covering the human body inlet to seal the accommodating cavity;
the passive noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for passively absorbing noise in the accommodating cavity;
the active noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for neutralizing the noise in the accommodating cavity by adopting reverse-phase sound waves equal to the noise in the accommodating cavity so as to eliminate the noise in the accommodating cavity;
wherein the cross-sectional area of the accommodating cavity at a first position is greater than or equal to the cross-sectional area of the accommodating cavity at a second position, and the first position is located between the human body inlets at the second position.
Furthermore, the passive noise reduction device is made of noise reduction materials and surrounds the wall of the cavity between the human body supporting device and the vortex-shaped center of the accommodating cavity, so that noise in the cavity between the human body supporting device and the vortex-shaped center of the accommodating cavity is surrounded.
Further, the passive noise reduction device comprises a plurality of noise reduction components;
the shape of the noise reduction component is an inclined triangular pyramid, the bottom surface of the inclined triangular pyramid formed by the noise reduction component is installed on the cavity wall of the accommodating cavity, and the side surface with the highest height of the inclined triangular pyramid formed by the noise reduction component is used as a noise reduction surface;
the area of the noise reduction surface contacting noise is increased, and the noise reduction surface is prevented from reflecting the noise in the opposite direction of the target transmission direction.
Furthermore, the height of the noise reduction component of the accommodating cavity at the third position is greater than or equal to the height of the noise reduction component of the accommodating cavity at the fourth position, and the third position is located at the fourth position and is arranged between the human body supporting devices.
Furthermore, the sound production surface of the active noise reduction device is arranged on one side, close to the vortex-shaped outer side of the accommodating cavity, of the vortex-shaped center of the accommodating cavity;
and the sound production surface of the active noise reduction device is positioned on the section of a tangent line vertical to the central line of the accommodating cavity.
Further, the cross-sectional area of the accommodating cavity forms a logarithmic function having a base number larger than 0 and smaller than 1 from the spiral outer side of the accommodating cavity to the spiral center of the accommodating cavity.
Further, the central lines of the accommodating cavities are located on the same plane.
Further, the central line of the accommodating cavity forms a pagoda shape.
Further, the noise reduction capsule comprises: a pressurizing device and a depressurizing device;
the air inlet of the pressurizing device and the air outlet of the pressure reducing device are respectively communicated with the accommodating cavity;
wherein the exhaust port of the pressure reducing device is installed at the center of the spiral shape of the accommodating cavity.
The present application also proposes a breathing assistance system, the system comprising: the noise-reducing capsule of any one of the preceding claims.
According to the noise reduction closed cabin and the breathing auxiliary system, the vortex-shaped containing cavity is arranged in the main cabin body, the cross section area of the containing cavity at the first position is larger than or equal to that of the containing cavity at the second position, the first position is located at the second position and is arranged between the human body inlets, so that noise in the containing cavity is converged to the vortex-shaped center of the containing cavity, and the difficulty in eliminating the noise is reduced; the passive noise reduction device is arranged between the human body supporting device and the vortex center of the accommodating cavity and used for passively absorbing noise in the accommodating cavity, the active noise reduction device is arranged between the human body supporting device and the vortex center of the accommodating cavity and used for neutralizing noise in the accommodating cavity by adopting reverse-phase sound waves equal to the noise in the accommodating cavity, so that the noise in the accommodating cavity is eliminated, the active noise reduction and the passive noise reduction are combined, the noise reduction effect is improved, and the user experience of a user in the closed cabin is improved.
Drawings
FIG. 1 is a schematic structural diagram of a noise reduction capsule according to an embodiment of the present application;
FIG. 2 is a schematic structural view of another perspective of the noise-reducing capsule of FIG. 1;
the objectives, features, and advantages of the present application will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
In order to solve the problem that in the prior art, after noise in an external environment or noise generated by a closed cabin enters a cavity of the closed cabin, the noise is difficult to eliminate when staying in the cavity of the closed cabin, so that the technical problem of user experience of a user in the closed cabin is influenced, the application provides the noise reduction closed cabin, and the noise reduction closed cabin is suitable for the technical field of the closed cabin. The noise reduction closed cabin is characterized in that the accommodating cavity is set to be in a vortex shape, the cross section area of the accommodating cavity is gradually reduced from the outer side of the vortex shape to the center of the vortex shape, so that noise in the accommodating cavity is converged to the center of the vortex shape of the accommodating cavity, the difficulty of noise elimination is reduced, then a passive noise reduction device and an active noise reduction device are installed between the human body supporting device in the accommodating cavity and the center of the vortex shape of the accommodating cavity, and the noise reduction effect is improved through the combination of active noise reduction and passive noise reduction, and the user experience of a user in the closed cabin is improved.
Referring to fig. 1 and 2, in an embodiment of the present application, there is provided a noise reduction capsule, including: a main cabin body 10, a human body supporting device 20, a cabin cover 30, an active noise reduction device 80 and a passive noise reduction device 70;
a vortex-shaped accommodating cavity 50 is arranged inside the main cabin body 10, and a human body inlet 52 is arranged on the main cabin body 10;
the spiral outer side of the accommodating cavity 50 is communicated with the external environment through the human body inlet 52;
the human body support device 20 is arranged in the accommodating cavity 50;
the cover 30 is movably mounted on the main body 10 for covering the human body entrance 52 to seal the accommodating cavity 50;
the passive noise reduction device 70 is installed between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50, and is used for passively absorbing noise in the accommodating cavity 50;
the active noise reduction device 80 is installed between the human body supporting device 20 and the vortex center of the accommodating cavity 50, and is used for neutralizing the noise in the accommodating cavity 50 by using a reverse sound wave equal to the noise in the accommodating cavity 50, so as to eliminate the noise in the accommodating cavity 50;
wherein the cross-sectional area of the receiving cavity 50 at a first position is greater than or equal to the cross-sectional area of the receiving cavity 50 at a second position, the first position being located between the human body entrances 52 at the second position.
In the embodiment, the main cabin body 10 is internally provided with the spiral accommodating cavity 50, the cross-sectional area of the accommodating cavity 50 at the first position is larger than or equal to the cross-sectional area of the accommodating cavity 50 at the second position, and the first position is located between the human body inlets 52, so that the noise in the accommodating cavity 50 is converged to the spiral center of the accommodating cavity 50, and the difficulty in eliminating the noise is reduced; the passive noise reduction device 70 is arranged between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50 and used for passively absorbing noise in the accommodating cavity 50, the active noise reduction device 80 is arranged between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50 and used for neutralizing noise in the accommodating cavity 50 by adopting opposite-phase sound waves equal to the noise in the accommodating cavity 50 so as to eliminate the noise in the accommodating cavity 50, and the noise reduction effect is improved by combining active noise reduction and passive noise reduction, so that the user experience of a user in a closed cabin (namely, a noise reduction closed cabin) is improved.
The shape of the main hull 10 may be spherical or pseudo-spherical. The material of the main hull 10 is not particularly limited. It is understood that the shape of the main body 10 may be other shapes, such as a square shape, and is not limited thereto.
The body support 20 may be a lounge chair or a lounge bed to assist in breathing the body of a person on the lounge chair or lounge bed.
The shape of the hatch 30 may be circular or elliptical. The material of the hatch 30 is not particularly limited herein.
Optionally, one side of the hatch 30 close to the accommodating cavity 50 is an arc-shaped surface protruding towards the accommodating cavity 50. When the gas in the accommodating cavity 50 applies pressure to the hatch 30, the side of the hatch 30 close to the accommodating cavity 50 is an arc-shaped surface protruding towards the accommodating cavity 50, so that the pressure resistance of the hatch 30 is increased, and the stability of the hatch 30 for sealing the accommodating cavity 50 is improved.
Optionally, when the hatch 30 is sealed to the accommodating cavity 50, a center line of an arc-shaped surface of one side of the hatch 30 close to the accommodating cavity 50 overlaps with a center line of the human body entrance 52. Thereby further increasing the pressure resistance of the hatch 30 and facilitating further improving the stability of the hatch 30 sealing the receiving cavity 50.
It is understood that a side of the hatch 30 close to the receiving cavity 50 may be provided as a plane, which is not limited in particular.
The shape of the passive noise reducer 70 may be triangular prism or triangular pyramid, and is not limited in detail. The material of the passive noise reduction device 70 may be sponge or pearl wool, which is not limited herein. It is understood that the passive noise reducer 70 may be made of one or more materials.
It is understood that sound absorbing material for passive noise reduction may be disposed on the cavity wall of the cavity where the human body support device 20 is located, and is not limited herein.
The active noise reduction device 80 includes: the device comprises a noise reduction controller, a loudspeaker and a sound detection component. The noise reduction controller is electrically connected with the loudspeaker and the sound detection part and used for controlling the loudspeaker to work according to the detection result of the sound detection part. The sound detection section is configured to detect a phase and a magnitude of sound, and the noise reduction controller controls the speaker to emit sound having a phase opposite to the phase of the sound detected by the sound detection section and a magnitude equal to the magnitude of the sound detected by the sound detection section.
It is understood that there may be one or more speakers of the active noise reduction device 80, and the number is not limited herein. Each loudspeaker comprises a sound emanating surface.
A body inlet 52 through which a user of the noise-reducing capsule enters or exits the receiving cavity 50.
The receiving cavity 50 has a spiral shape, that is, the receiving cavity 50 is curled into a spiral shape. The vortex shape reflects sound waves from the inner wall of the chamber toward the center of the vortex shape, thereby realizing that noise in the accommodating chamber 50 is converged to the center of the vortex shape of the accommodating chamber 50.
The cross-sectional area of the accommodating cavity 50 at the first position is greater than or equal to the cross-sectional area of the accommodating cavity 50 at the second position, the first position is located between the human body inlets 52 at the second position, that is, the cross-sectional area of the accommodating cavity 50 gradually decreases from the outer side of the spiral shape to the center of the spiral shape. Therefore, the sound wave inside the accommodating cavity 50 is restrained by the inner wall of the cavity and transmitted in the cavity, and the sound wave has higher sound pressure in the elongated cavity close to the center of the vortex-shaped center, so that the noise in the accommodating cavity 50 is converged to the center of the vortex-shaped center of the accommodating cavity 50.
The spiral outer side, i.e., the outer side of the spiral formed by the receiving cavity 50. The center of the spiral, that is, the center of the spiral formed by the receiving cavity 50.
The cross-sectional area of the receiving cavity 50 at the first position is a cross-sectional area of a section based on a tangent line perpendicular to the center line 51 of the receiving cavity 50 at the first position.
The cross-sectional area of the receiving cavity 50 at the second position is a cross-sectional area based on a tangent line perpendicular to the center line 51 of the receiving cavity 50 at the second position.
Optionally, the spiral center line of the receiving cavity 50 is parallel to the ground.
Optionally, the body inlet 52 is located at the end of the spiral-shaped outer side of the receiving cavity 50.
Optionally, the cross-sectional area of the accommodating cavity 50 at the first position is larger than the cross-sectional area of the accommodating cavity 50 at the second position. Thereby, the cross-sectional area of the cross-section perpendicular to the center line 51 of the accommodation cavity 50 is continuously reduced from the outer side of the spiral shape to the inner side of the spiral shape.
Because the human body is also a sound wave reflector, and the cross-sectional area of the accommodating cavity 50 between the human body supporting device 20 and the spiral center of the accommodating cavity 50 is smaller than the cross-sectional area of the accommodating cavity 50 corresponding to the human body supporting device 20, the passive noise reduction device 70 is installed between the human body supporting device 20 and the spiral center of the accommodating cavity 50, so that passive noise reduction is realized in the central region part of the elongated spiral cavity, the length of an equivalent sound absorption region is increased, the sound absorption effect is good, and the space outside the spiral of the accommodating cavity 50 is not occupied; when the curved cavity with a large turning diameter is called as a sound guide cavity, the noise transmitted in the radial direction in the cavity can be regarded as the noise of a single source, and the active noise reduction device 80 is arranged between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50, so that the active noise neutralization effect of the active noise reduction device 80 is improved; moreover, the passive noise reduction device 70 and/or the active noise reduction device 80 do not need to be arranged around the cavity of the human body supporting device 20, so that the sitting and lying comfort of the user is improved.
In one embodiment, the passive noise reducer 70 is made of a noise reducing material to surround the wall of the cavity between the body support 20 and the spiral center of the receiving cavity 50, so as to surround the noise in the cavity between the body support 20 and the spiral center of the receiving cavity 50. That is to say, the passive noise reduction device 70 is formed by wrapping noise reduction materials around the cavity wall between the human body supporting device 20 and the spiral center of the accommodating cavity 50, so as to surround the noise in the cavity between the human body supporting device 20 and the spiral center of the accommodating cavity 50, improve the contact area between the noise reduction materials and the noise, further improve the effect of passively absorbing the noise in the accommodating cavity 50 by the passive noise reduction device 70, and further improve the user experience of a user in the enclosed cabin.
In one embodiment, the passive noise reducer 70 includes a plurality of noise reduction features;
the shape of the noise reduction component is an inclined triangular pyramid, the bottom surface of the inclined triangular pyramid formed by the noise reduction component is installed on the cavity wall of the accommodating cavity 50, and the side surface with the highest height of the inclined triangular pyramid formed by the noise reduction component is used as a noise reduction surface 71;
the area of the noise reduction surface 71 contacting noise is increased by taking the spiral outer side of the accommodating cavity 50 to the spiral center of the accommodating cavity 50 as a target transmission direction, and the noise reduction surface 71 is inclined along the target transmission direction to prevent the noise reduction surface 71 from reflecting the noise in the opposite direction of the target transmission direction. That is, the noise transmitted in the target transmission direction contacts the noise reduction surface 71 at an acute angle, and the noise reduction surface 71 reflects the noise that is not absorbed in the target transmission direction, thereby facilitating the concentration of the noise toward the center of the spiral of the housing cavity 50. The side face of the oblique triangular pyramid formed by the noise reduction member having the highest height is the side face that is inclined, and when the same pyramid height and side face base length are set, the side face of the oblique triangular pyramid formed by the noise reduction member having the highest height is set as the noise reduction face 71, thereby increasing the area of the noise reduction face 71.
In one embodiment, the height of the noise reduction feature of the receiving cavity 50 in the third position is greater than or equal to the height of the noise reduction feature of the receiving cavity 50 in the fourth position, and the third position is located in the fourth position between the body support 20. That is, the height of the noise reduction component located upstream in the target transmission direction is greater than or equal to the height of the noise reduction component located downstream in the target transmission direction, so that the noise is further favorably transmitted along the target transmission direction, the noise in the accommodating cavity 50 is further favorably converged toward the vortex-shaped center, and the noise reduction effect is further favorably improved.
Optionally, the height of the noise reduction component of the accommodating cavity 50 at the third position is greater than the height of the noise reduction component of the accommodating cavity 50 at the fourth position. Thereby being beneficial to further transmitting the noise along the target transmission direction, being beneficial to further converging the noise in the accommodating cavity 50 to the vortex-shaped center and being beneficial to further improving the noise reduction effect.
In one embodiment, the sound generating surface of the active noise reducer 80 is installed at one side of the spiral center of the accommodating cavity 50 close to the spiral outer side of the accommodating cavity 50;
wherein, the sound-emitting surface of the active noise reducer 80 is located on the section of the tangent line perpendicular to the central line 51 of the accommodating cavity 50. Because of the central line 51 that holds cavity 50 is the pitch arc, through making the sound plane of initiative noise reduction device 80 is located the perpendicular on the cross-section of the tangent line of the central line 51 that holds cavity 50 to make the sound that the sound plane of initiative noise reduction device 80 sent with the noise transmission direction that holds cavity 50 is opposite, be favorable to improving the effect of carrying out the neutralization to the noise that holds in cavity 50, be favorable to further improving noise reduction effect.
In one embodiment, the cross-sectional area of the receiving cavity 50 forms a logarithmic function having a base number greater than 0 and less than 1 from the outer swirl-like side of the receiving cavity 50 to the center of the swirl-like of the receiving cavity 50. Therefore, the cross-sectional area of the cross section perpendicular to the central line 51 of the accommodating cavity 50 is rapidly reduced from the outer side of the spiral shape of the accommodating cavity 50 to the center of the spiral shape, under the same volume, the widest space of the spiral accommodating cavity 50 is further improved, unnecessary volume overhead is saved, noise in the accommodating cavity 50 is rapidly converged toward the center of the spiral shape, and the noise reduction difficulty is further reduced.
A change in the cross-sectional area is generated by using the change in the distance from the spiral outer side of the housing cavity 50 to the spiral center as the X axis and the cross-sectional area of the cross-section perpendicular to the center line 51 of the housing cavity 50 as the Y axis. The shape of the cross-sectional area change curve is the same as or similar to the shape of a logarithmic function with a base number larger than 0 and smaller than 1.
In one embodiment, the center lines 51 of the receiving cavities 50 are located on the same plane. Thereby facilitating the manufacture of the main hull 10 and also facilitating the reduction of the thickness of the main hull 10.
In one embodiment, the centerline 51 of the receiving cavity 50 forms a pagoda shape. Thereby increased the length that holds cavity 50, be favorable to improving the effect of making an uproar passively fall, further improved user experience of user.
In one embodiment, the noise-reducing capsule comprises: a pressurizing device 41 and a depressurizing device 42;
the air inlet of the pressurizing device 41 and the air outlet of the pressure reducing device 42 are respectively communicated with the accommodating cavity 50;
wherein the exhaust port of the pressure reducing device 42 is installed at the center of the spiral shape of the receiving cavity 50. Thereby be favorable to making the air that holds in the cavity 50 flow toward the vortex form center, also be favorable to making the noise that holds in the cavity 50 assemble toward the vortex form center, further reduced the degree of difficulty of making an uproar, promoted the noise reduction effect.
The pressurizing means 41 employs a device for adding gas, which includes pure oxygen and/or air. The pressurizing device 41 is used for adding gas to the accommodating cavity 50 through a gas filling port of the pressurizing device 41 so as to pressurize the accommodating cavity 50.
The pressure reducing device 42 may be selected from an exhaust valve or an air pump, and is not particularly limited herein. The decompression device 42 is used for exhausting the gas in the accommodating cavity 50 so as to realize decompression of the accommodating cavity 50.
Optionally, the human body supporting device 20 includes: the human body supporting assembly comprises an upper body supporting assembly 21 and a lower body supporting assembly 22, wherein the upper body supporting assembly 21 is located between the lower body supporting assembly 22 and the human body inlet 52, and the lower body supporting assembly 22 is located between the upper body supporting assembly 21 and the vortex-shaped center of the accommodating cavity 50. That is, the upper torso of the user is located in the widest space of the spiral-shaped accommodating cavity 50, so that the head portion crime is prevented from being pushed, unnecessary volume overhead is saved at the legs and other positions of the user, and the use experience and the volume of the user are fully utilized.
It is understood that the exhaust port of the pressure reducing device 42 may be installed at other positions between the human body support device 20 and the vortex-like center of the receiving cavity 50, and is not particularly limited herein.
In one embodiment, the human body entrance 52 is located at the upper part of the main body 10; the human body supporting device 20 is positioned at the lower part of the main cabin body 10;
the body support 20 is a bed that can be moved forward and backward and can be raised and lowered. The human body supporting device 20 is a bed which can move forwards and backwards and can be lifted, so that a user can conveniently enter the accommodating cavity 50, the posture of the user in the accommodating cavity 50 can be adjusted, and the user experience of the user is further improved. The human body inlet 52 is located at the upper part of the main body 10, and the human body supporting device 20 is located at the lower part of the main body 10, that is, the human body supporting device 20 is located below the human body inlet 52, which is beneficial to enabling the human body supporting device 20 to be arranged as close to the human body inlet 52 as possible, so as to be beneficial to further improving the volume of the widest space of the spiral accommodating cavity 50 where the upper body of the user is located.
In one embodiment, the spiral center of the receiving cavity 50 is located directly above the upper body support assembly 21. Thereby contributing to further saving unnecessary volume overhead.
In one embodiment, the noise-reducing capsule further comprises a display screen 61, wherein the display screen 61 is positioned between the lower body support assembly 22 and the body inlet 52 to facilitate positioning of the display screen 61 adjacent the upper body of the user.
In one embodiment, the above noise-reducing capsule further comprises: an oxygen concentration detection device located between the lower body support assembly 22 and the human body inlet 52 for measuring the concentration of oxygen around the upper body of the user of the noise reduction capsule.
The oxygen concentration detection means may employ an oxygen concentration detection sensor.
In one embodiment, the above noise-reducing capsule further comprises: a support frame 62, wherein the main cabin body 10 is arranged on the support frame 62.
In one embodiment, the noise reduction capsule further comprises a main controller; the main controller is electrically connected with the active noise reduction device 80, the oxygen concentration measuring device, the display screen 61, the pressurizing device 41 and the pressure reducing device 42, and is used for controlling the active noise reduction device 80, the oxygen concentration measuring device, the display screen 61, the pressurizing device 41 and the pressure reducing device 42 to work.
Master controllers include, but are not limited to: industrial personal computer, PLC (Programmable Logic Controller), FPGA (field Programmable Gate Array), and PC (personal computer).
The present application also proposes a breathing assistance system, the system comprising: a noise reduction closed cabin;
the noise reduction capsule comprises: a main cabin body 10, a human body supporting device 20, a cabin cover 30, an active noise reduction device 80 and a passive noise reduction device 70;
a vortex-shaped accommodating cavity 50 is arranged inside the main cabin body 10, and a human body inlet 52 is arranged on the main cabin body 10;
the spiral outer side of the accommodating cavity 50 is communicated with the external environment through the human body inlet 52;
the human body support device 20 is arranged in the accommodating cavity 50;
the cover 30 is movably mounted on the main body 10 for covering the human body entrance 52 to seal the accommodating cavity 50;
the passive noise reduction device 70 is installed between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50, and is used for passively absorbing noise in the accommodating cavity 50;
the active noise reduction device 80 is installed between the human body supporting device 20 and the vortex center of the accommodating cavity 50, and is used for neutralizing the noise in the accommodating cavity 50 by using a reverse sound wave equal to the noise in the accommodating cavity 50, so as to eliminate the noise in the accommodating cavity 50;
wherein the cross-sectional area of the receiving cavity 50 at a first position is greater than or equal to the cross-sectional area of the receiving cavity 50 at a second position, the first position being located between the human body entrances 52 at the second position.
In the noise reduction closed cabin of the embodiment, the main cabin body 10 is internally provided with the vortex-shaped accommodating cavity 50, the cross-sectional area of the accommodating cavity 50 at the first position is larger than or equal to the cross-sectional area of the accommodating cavity 50 at the second position, and the first position is positioned between the human body inlets 52 at the second position, so that the noise in the accommodating cavity 50 is converged to the vortex-shaped center of the accommodating cavity 50, and the difficulty in eliminating the noise is reduced; the passive noise reduction device 70 is arranged between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50 and used for passively absorbing noise in the accommodating cavity 50, the active noise reduction device 80 is arranged between the human body supporting device 20 and the vortex-shaped center of the accommodating cavity 50 and used for neutralizing noise in the accommodating cavity 50 by adopting opposite-phase sound waves equal to the noise in the accommodating cavity 50 so as to eliminate the noise in the accommodating cavity 50, and the noise reduction effect is improved by combining active noise reduction and passive noise reduction, so that the user experience of a user in the closed cabin is improved.
It is understood that the breathing assistance system includes one or more noise reducing capsules.
Optionally, the breathing assistance system further comprises a breathing assistance platform; the breathing auxiliary platform is in communication connection with the noise reduction closed cabin and used for receiving data sent by the noise reduction closed cabin and carrying out statistical analysis on the received data.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A denoise containment vessel, comprising: the device comprises a main cabin body, a human body supporting device, a cabin cover, an active noise reduction device and a passive noise reduction device;
a vortex-shaped accommodating cavity is arranged inside the main cabin body, and a human body inlet is formed in the main cabin body;
the spiral outer side of the accommodating cavity is communicated with the external environment through the human body inlet;
the human body supporting device is arranged in the accommodating cavity;
the cabin cover is movably arranged on the main cabin body and is used for covering the human body inlet to seal the accommodating cavity;
the passive noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for passively absorbing noise in the accommodating cavity;
the active noise reduction device is arranged between the human body supporting device and the vortex-shaped center of the accommodating cavity and is used for neutralizing the noise in the accommodating cavity by adopting reverse-phase sound waves equal to the noise in the accommodating cavity so as to eliminate the noise in the accommodating cavity;
wherein the cross-sectional area of the accommodating cavity at a first position is greater than or equal to the cross-sectional area of the accommodating cavity at a second position, and the first position is located between the human body inlets at the second position.
2. The noise-reducing capsule according to claim 1, wherein the passive noise-reducing device is wrapped around the wall of the cavity between the body support and the vortex-like center of the containment cavity with a noise-reducing material to achieve an enclosure of noise in the cavity between the body support and the vortex-like center of the containment cavity.
3. The noise-reducing capsule according to claim 1, wherein the passive noise-reducing mechanism comprises a plurality of noise-reducing components;
the shape of the noise reduction component is an inclined triangular pyramid, the bottom surface of the inclined triangular pyramid formed by the noise reduction component is installed on the cavity wall of the accommodating cavity, and the side surface with the highest height of the inclined triangular pyramid formed by the noise reduction component is used as a noise reduction surface;
the area of the noise reduction surface contacting noise is increased, and the noise reduction surface is prevented from reflecting the noise in the opposite direction of the target transmission direction.
4. The noise-reducing capsule according to claim 3, wherein the noise-reducing component of the housing cavity in a third position has a height greater than or equal to the height of the noise-reducing component of the housing cavity in a fourth position, the third position being located between the body support means in the fourth position.
5. The noise reduction capsule according to claim 1, wherein the sound emitting surface of the active noise reduction device is installed at one side of the vortex-shaped center of the accommodating cavity close to the vortex-shaped outer side of the accommodating cavity;
the sound production surface of the active noise reduction device is positioned on the section of a tangent line perpendicular to the central line of the accommodating cavity.
6. The noise-reducing capsule according to claim 1, wherein the cross-sectional area of the housing cavity forms a logarithmic function with a base number greater than 0 and less than 1 from the spiral-shaped outer side of the housing cavity to the spiral-shaped center of the housing cavity.
7. The noise-reducing capsule according to claim 1, wherein the centerlines of the receiving cavities lie in the same plane.
8. The noise-reducing capsule according to claim 1, wherein the centerline of the containment cavity forms a pagoda shape.
9. The noise-reducing capsule according to claim 1, comprising: a pressurizing device and a depressurizing device;
the air inlet of the pressurizing device and the air outlet of the pressure reducing device are respectively communicated with the accommodating cavity;
wherein the exhaust port of the pressure reducing device is installed at the center of the spiral shape of the accommodating cavity.
10. A breathing assistance system, the system comprising: a noise-reducing capsule as defined in any one of claims 1 to 9.
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