CN106730203A - For the noise-decreasing device and lung ventilator of lung ventilator - Google Patents
For the noise-decreasing device and lung ventilator of lung ventilator Download PDFInfo
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- CN106730203A CN106730203A CN201611235975.8A CN201611235975A CN106730203A CN 106730203 A CN106730203 A CN 106730203A CN 201611235975 A CN201611235975 A CN 201611235975A CN 106730203 A CN106730203 A CN 106730203A
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- Prior art keywords
- noise
- air inlet
- decreasing device
- housing
- blower fan
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0208—Oxygen
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/42—Reducing noise
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of noise-decreasing device and lung ventilator for lung ventilator.The noise-decreasing device includes housing and blower fan cabin.The first air inlet and the first gas outlet are provided with the housing.The blower fan cabin is arranged in the housing, and multiple second air inlets connected with first air inlet are provided with the blower fan cabin.Noise-decreasing device of the invention effectively combing can enter into the air-flow of wind engine room inside, make air-flow more smooth, it is to avoid the generation of turbulent flow or vortex, reduce noise when noise-decreasing device runs.
Description
Technical field
The present invention relates to technical field of medical instruments, in particular it relates to a kind of noise-decreasing device and breathing for lung ventilator
Machine.
Background technology
In recent years, with electronic computer technology, the continuous depth for developing rapidly and recognizing breathing mechanics of sensing technology
Enter, home ventilator has a great development.In addition to common respiratory disorder, acute respiratory distress syndrome, severe are roared
Breathe heavily and chronic obstructive pulmonary disease exhales the therapeutic strategy of the symptom such as decline all to have very big change than before, started the brand-new of mechanical ventilation treatment
Situation.
Blower fan apparatus are an important components of lung ventilator.Blower fan apparatus can be used for producing the gas for being available for breathing
Body, so that patient uses.The blower fan apparatus air turbulence of lung ventilator on the market, easily produces turbulent flow or vortex etc. to ask at present
Topic, and noise is big.
It is therefore desirable to propose a kind of noise-decreasing device and lung ventilator for lung ventilator, to solve existing skill at least in part
Problem present in art.
The content of the invention
In order to solve the problems, such as the air turbulence of the blower fan apparatus of lung ventilator present in prior art, the present invention provides one
Plant the noise-decreasing device for lung ventilator.The noise-decreasing device includes housing and blower fan cabin.First is provided with the housing to enter
Gas port and the first gas outlet.The blower fan cabin is arranged in the housing, is provided with the blower fan cabin and first air inlet
Multiple second air inlets of mouth connection.
Exemplarily, the multiple second air inlet is arranged on the top in the blower fan cabin.
Exemplarily, the multiple second air inlet is of the same size and equably arranges.
Exemplarily, the cross-sectional area of each of the multiple second air inlet gradually increases along the direction that gas flows
Plus.
Exemplarily, the noise-decreasing device further includes many conducting devices with multiple air ventilation passages, described
Many conducting devices are arranged between first air inlet and the multiple second air inlet, with connect first air inlet and
The multiple second air inlet.
Exemplarily, many conducting devices further include supporting part, and the supporting part is connected to the interior of the housing
Wall, the multiple air ventilation passage is connected to the supporting part, to be supported on the supporting part.
Exemplarily, the supporting part is dividing plate, and the enclosure interior is separated into first chamber and second by the dividing plate
Chamber, wherein the first chamber is connected with first air inlet, the second chamber connects with the multiple second air inlet
Logical, the two ends of the multiple air ventilation passage are located in the first chamber and the second chamber and protrude from described respectively
Supporting part.
Exemplarily, the spiral helicine flow-guiding channel formed by fuisw rib is provided with the inwall of the housing, it is described to lead
The inlet end of circulation road is connected with many conducting devices, and the outlet side of the flow-guiding channel connects with the multiple second air inlet
It is logical.
Exemplarily, the first air inlet outside is provided with barriers, between the barriers and first air inlet
Separate and cover at least a portion of first air inlet.
Exemplarily, the noise-decreasing device further includes filtration members, and the filtration members are arranged on first air inlet
Place.
Exemplarily, the noise-decreasing device further includes the shunting muscle being arranged in gas flow paths and/or sound-absorbing
Component.
The present invention also provides a kind of lung ventilator.The lung ventilator includes a kind of any of the above described noise-decreasing device.
Multiple second air inlets are provided with the blower fan cabin of noise-decreasing device, therefore effectively combing can enter into blower fan cabin
Internal air-flow, makes air-flow more smooth, it is to avoid the generation of turbulent flow or vortex, reduces noise when noise-decreasing device runs.
A series of concept of reduced forms is introduced in the content of the invention, this will be in specific embodiment part further
Describe in detail.Present invention part be not meant to attempt the key feature for limiting technical scheme required for protection and
Essential features, the protection domain for attempting to determine technical scheme required for protection is not meant that more.
Below in conjunction with accompanying drawing, advantages and features of the invention are described in detail.
Brief description of the drawings
Drawings below of the invention is in this as a part of the invention for understanding the present invention.Shown in the drawings of this hair
Bright implementation method and its description, for explaining principle of the invention.In the accompanying drawings,
Fig. 1 is the decomposing schematic representation of the noise-decreasing device according to an illustrative embodiment of the invention；
Fig. 2 is the upper shell and the schematic diagram of middle housing of noise-decreasing device shown in Fig. 1；
Fig. 3 is the schematic diagram of the lower house of noise-decreasing device shown in Fig. 1；
Fig. 4 is the sectional view of noise-decreasing device shown in Fig. 1；
Fig. 5 is the partial sectional view at the first air inlet of the noise-decreasing device shown in Fig. 1；
Fig. 6 is the schematic perspective view of many conducting devices of noise-decreasing device shown in Fig. 1；
Fig. 7 is the gas flow schematic diagram inside the noise-decreasing device according to one exemplary embodiment of the present invention；And
Fig. 8 is the noise transmission schematic diagram inside the noise-decreasing device according to one exemplary embodiment of the present invention.
Specific embodiment
In the following description, there is provided substantial amounts of details is so as to thoroughly understand the present invention.However, this area skill
Art personnel will be seen that, described below exemplarily only to show the preferred embodiments of the present invention, and the present invention can be without one
Or multiple such details and be carried out.Additionally, in order to avoid obscuring with the present invention, for more well known in the art
Technical characteristic is not described in detail.
The present invention provides a kind of noise-decreasing device (hereinafter referred to as " noise-decreasing device ") for lung ventilator.As shown in fig. 1, subtract
Device 100 of making an uproar can mainly include housing 110 and blower fan cabin 120.Blower fan cabin 120 can be used for accommodating blower fan 130.Below will
The noise-decreasing device 100 and its all parts provided with reference to Fig. 1-8 couples of present invention are described in detail.
As shown in fig. 1, in one exemplary embodiment of the present invention, the housing 110 of noise-decreasing device 100 can include
Upper shell 111, middle housing 112 and lower house 113.Upper shell 111 and lower house 113 are mounted respectively to the phase of middle housing 112
To two ends, therefore upper shell 111, middle housing 112 and lower house 113 together form for accommodating noise-decreasing device 100
The cavity of internals (all blower fan cabins 120 as will be described and blower fan 130).As an example, upper shell 111 is with
At least one of housing 113 can be detachably mounted to middle housing 112 by modes such as threaded fasteners, in order to
Install and safeguard the internals of noise-decreasing device 100.In order to ensure the sealing property inside housing 110, alternatively, in upper shell
First seal 116 and second is respectively arranged between 111 and middle housing 112 and between middle housing 112 and lower house 113 close
Sealing 117.First seal 116 and second seal 117 can be by the elastomeric material of rubber, silica gel etc. formed it is close
Seal, the relative two ends matching that its shape can respectively with middle housing 112.In another exemplary embodiment of the invention
In, middle housing 112 can be omitted or whole housing can be integrated.
Can be provided with housing 110 be available for extraneous gas enter the first air inlet 114 and for discharge be available for patient
First gas outlet 115 of the gas (gas of such as compression) for using.In an exemplary embodiment of the present invention, the first air inlet
114 can be arranged on lower house 113, and the first gas outlet 115 can be arranged on middle housing 112.It is of the invention another
In exemplary embodiment, the first air inlet 114 and the first gas outlet 115 can be separately positioned on any suitable of housing 110
At other positions.
Blower fan cabin 120 is provided with housing 110.In one exemplary embodiment of the present invention, as shown in Figure 1, Figure 3 and Figure 4
Shown in, blower fan cabin 120 is located inside lower house 113 and middle housing 112.In another exemplary embodiment of the invention,
Blower fan cabin 120 can also be only located at the inside of lower house 113 or a part of of blower fan cabin 120 and can also stretch into upper shell 111
Portion.Multiple second air inlets 121 connected with the first air inlet 114 on housing 110 are provided with blower fan cabin 120.Multiple the
Two air inlets 121 can arrange in spraying head type, therefore multiple second air inlets are referred to as " spraying head type air inlet ".Need
Bright, herein referred " connection " refers to two parts (such as the first air inlet 114 and multiple second air inlets for communicating with each other
Mouth 121) in fluid (gas or liquid) another can be flowed into from any one in described two parts.Described two parts
Can be directly connection, i.e., there is no miscellaneous part between two parts.Described two parts can also be indirect communication, i.e., described
There can also be the miscellaneous part for not hindering flow of fluid between two parts.Gas from the first air inlet 114 can pass through
Multiple second air inlets 121 of spraying head type are entered into blower fan cabin 120.
Blower fan cabin 120 is used to accommodate blower fan 130.Blower fan 130 can be any suitable type such as centrifugal blower, axial flow blower
Blower fan.Blower fan 130 mainly can including rotor block 132 and impeller (not shown) etc. part.The impeller of rotor block 132 is along suitable
Clockwise is rotated in an anti-clockwise direction.In the process, rotor block 132 can produce substantial amounts of heat.Additionally, art technology
Personnel are appreciated that blower fan 130 can also be including some other conventional parts (spiral case etc.).Due to blower fan 130
Structure is well known to those skilled in the art, therefore does not show the detailed construction of blower fan 130 herein.Set on blower fan 130
There is the second gas outlet 131 connected with the first gas outlet 115.
When noise-decreasing device 100 works, extraneous gas can enter into housing by the first air inlet 114 on housing 110
110 inside and multiple second air inlets 121 by the spraying head type connected with the first air inlet 114 enter into blower fan cabin 120
It is internal.The gas entered into inside blower fan cabin 120 passes sequentially through what is communicated with each other after being pressurized by the impeller speedup of blower fan 130
Second gas outlet 131 and the first gas outlet 115 are expelled to outside noise-decreasing device 100, so that patient uses.Due to blower fan cabin 120
On be provided with multiple second air inlets 121 of spraying head type, therefore can gas that effectively combing is entered into inside blower fan cabin 120
Stream, makes air-flow more smooth, it is to avoid the generation of turbulent flow or vortex, reduces noise when noise-decreasing device 100 runs.
Multiple second air inlets 121 of spraying head type can be arranged at any suitable position in blower fan cabin 120.Generally come
Say, the rotor block 132 of blower fan 130 is arranged at the top of blower fan 130.Correspondingly, alternatively, it is exemplary at one of the invention
In embodiment, as shown in Figures 1 and 2, multiple second air inlets 121 of spraying head type can be arranged on the top in blower fan cabin 120
At 122.Gas from multiple second air inlets 121 can also be by blower fan 130 while 120 inside of blower fan cabin is entered into
Heat produced by rotor block 132 is taken away, therefore can efficiently solve the heat dissipation problem of blower fan 130 and will not increase extra
Cost.Still optionally further, multiple second air inlets 121 can be around the rotor block 121 of blower fan 120, more effectively to solve
The certainly heat dissipation problem of blower fan 130.
Multiple second air inlets 121 of spraying head type can have any suitable shape, for example cylinder, triangular prism, many
Prism etc..Alternatively, in one exemplary embodiment of the present invention, the cross section face of each of multiple second air inlets 121
Product gradually increases along the direction that gas flows.The big opening end of i.e. multiple second air inlets 121 is towards inside blower fan cabin 120.So,
Be conducive to being dissipated into the gas from multiple second air inlets 121 inside blower fan cabin 120, make air-flow more steady and smooth.
Alternatively, in one exemplary embodiment of the present invention, multiple second air inlets 121 can have identical shape
Shape, such as multiple second air inlets 121 can be circle.Still optionally further, multiple second air inlets 121 can have phase
With size and equably arrange so that air-flow is more smooth, further reduce noise when noise-decreasing device 100 runs.
Alternatively, in one exemplary embodiment of the present invention, as shown in figs. 1-4, noise-decreasing device 100 can also be wrapped
Include many conducting devices 140 with multiple air ventilation passages 141.Alternatively, multiple air ventilation passages 141 can be one
Body, in order to processing, making and installing many conducting devices 140.As needed, the section of multiple air ventilation passages 141 can be with
It is any suitable shape.In one exemplary embodiment of the present invention, the section of multiple air ventilation passages 141 can be
Polygon.In another exemplary embodiment of the invention, the section of multiple air ventilation passages 141 can also be circle etc.
Any suitable shape.The first air inlet 114 and wind that many conducting devices 140 are located in housing 110 and are arranged on housing 110
Between multiple second air inlets 121 of the spraying head type in cabin 120, to connect multiple the of the first air inlet 114 and spraying head type
Two air inlets 121.Gas i.e. from the first air inlet 114 can reach multiple second air inlets by many conducting devices 140
121。
Show the gas inside from the first air inlet 114 into the housing 110 of noise-decreasing device 100 by leading in Fig. 7 more
Schematic diagram during exchange device 110, with the arrows showing the direction and path of gas flowing.It is outside when noise-decreasing device 100 works
Gas can be entered into inside housing 110 by the first air inlet 114 on housing 110, then by with the first air inlet 114
Many conducting devices 140 and multiple second air inlets 121 via spraying head type of connection are entered into inside blower fan cabin 120.Work as gas
During by many conducting devices 140 with multiple air ventilation passages 141, many conducting devices 140 can further combing air-flow,
So that air-flow is more smooth.Additionally, many conducting devices 140 can also weaken noise.
The noise transmission schematic diagram inside the housing 110 of noise-decreasing device 100 is shown in Fig. 8, with the arrows showing making an uproar
The direction of transfer of sound and path.As shown in Figure 8, when noise is transmitted in housing 110 along the direction opposite with gas flowing,
The reflection and/or refraction of the inwall of multiple air ventilation passages 141 of many conducting devices 140 can be run into, therefore can be weakened.
Many conducting devices 140 can substantially be cylindrical in shape, and it can extend to multiple second and enter from the first air inlet 114
Gas port 121, it is also possible to the one of the gas flow paths being arranged only between the first air inlet 114 and multiple second air inlets 121
On part.In one exemplary embodiment of the present invention, as shown in Figure 6, many conducting devices 140 can also be included for branch
The supporting part 142 of the multiple air ventilation passages 141 of support.Supporting part 142 is connected to the inwall of housing 110.Alternatively, supporting part
142 inwalls that can be detachably connectable to housing 110.As an example, supporting part 142 can be detachable by threaded fastener
Be connected to the inwall of housing 110.Supporting part 142 can be any suitable shape such as tabular, shaft-like.Multiple gas circulations are logical
Road 141 is connected to supporting part 142, to be supported on supporting part 142.Supporting part 142 can be continuous member.For example, supporting part
Through hole can be provided with 142.Multiple air ventilation passages 141 can be arranged in the through hole and be connected to supporting part
142.Supporting part 142 can also include multiple sub- supporting parts spaced apart.For example, supporting part 142 can include three son supports
Portion, three sub- supporting parts are connected to housing 110 with being spaced 120 degree, and multiple air ventilation passages 141 are connected to three son branch
Support part.Supporting part 142 can be supported and fixed multiple air ventilation passage 141, it is to avoid multiple air ventilation passages 141 are rocked,
So that air-flow is more smooth, it is to avoid produce turbulent flow or vortex.
Alternatively, in one exemplary embodiment of the present invention, as shown in figs 6-8, supporting part 142 can be dividing plate,
It will completely be separated into two chambers, i.e. first chamber 118 and second chamber 119 inside housing 110.Wherein, first chamber 118
Connected with the first air inlet 114, second chamber 119 is connected with multiple second air inlets 121.Multiple air ventilation passages 141
Two ends are located in first chamber 118 and second chamber 119 and protrude from supporting part 142 respectively, i.e., multiple air ventilation passages 141
Two ends along air ventilation passage 141 bearing of trend and supporting part 142 spaced a predetermined distance.As shown in Figure 7, noise-decreasing device
During 100 work, the first chamber that extraneous gas can be entered into inside housing 110 by the first air inlet 114 on housing 110
In 118, then enter into many conducting devices 140 and pass through via one end in first chamber 118 of many conducting devices 140
Entered into second chamber 119 by one end in second chamber 119 of many conducting devices 140, then by spraying head type
Multiple second air inlets 121 are entered into inside blower fan cabin 120.As shown in Figure 8, in noise along opposite with gas flow direction
Direction spread out of during, supporting part 142 can filter out a part of noise so that the partial noise is blocked on the second chamber
Without being spread out of from the first air inlet 114 in room 119, therefore noise can be weakened.Further, since the two of many conducting devices 140
End protrudes from supporting part 142, therefore, when noise is delivered to many conducting devices in first chamber 118 and second chamber 119
During 140 outer wall, a part of noise by the reflection of the outer wall of many conducting devices 140 and/or refraction, therefore can further weaken
Noise.
Alternatively, as shown in Figures 1 and 2, it is also provided with what is formed by fuisw rib 151 on the inwall of housing 110
Flow-guiding channel 150.The inlet end of flow-guiding channel 150 is connected with many conducting devices 140, the outlet side of flow-guiding channel 150 and gondola water faucet
Multiple second air inlets 121 of formula are connected, and the multiple second that the gas from many conducting devices 140 is guided to spraying head type is entered
Gas port 121.In one exemplary embodiment of the present invention, the flow-guiding channel 150 formed by fuisw rib 151 can be arranged on shell
On the inwall of the upper shell 111 of body 110, with multiple second air inlets 121 on the top 122 corresponding to blower fan cabin 120.Ability
Field technique personnel are appreciated that when multiple second air inlets 121 are arranged at the other positions in blower fan cabin 120, flow-guiding channel
150 can also be arranged at the other positions on the inwall of housing 110.The flow-guiding channel 150 formed by fuisw rib 151 can be in
Helical form, it can be the spiral-shaped of spiral of Archimedes shape, involute shape or other any suitable types.Water conservancy diversion
Gas from many conducting devices 140 can be guided multiple second air inlets 121 to blower fan cabin 120 by passage 150, and
Gas can also be made more smooth on its flow path.
Alternatively, as shown in Fig. 1,4 and 5, the outside of the first air inlet 114 can be provided with barriers 190.Barriers
190 at least a portion for blocking the first air inlet 114 and it is spaced apart with the first air inlet 114.On the one hand, extraneous gas can lead to
The interval crossed between the first air inlet 114 and barriers 190 enters the first air inlet 114, and then enters into noise-decreasing device 100
In housing 110.On the other hand, when noise is reached at the first air inlet 114 along the direction opposite with gas flow direction, meeting
Run into the obstruction of barriers 190 and reflect, therefore noise can be reduced.
Alternatively, noise-decreasing device 100 is also provided with filtration members 160.Alternatively, filtration members 160 can be by synthesizing
The filter cotton that any suitable filtering material such as fiber, glass fibre, non-woven fabrics, activated carbon is made.Filtration members 160 can be set
At the first air inlet 114.In one exemplary embodiment of the present invention, filtration members 160 can be arranged on the first air inlet
114 inner side, i.e. filtration members 160 may be located inside housing 110.In another exemplary embodiment of the invention, filtering
Part 160 can be arranged on the outside of the first air inlet 114, i.e. filtration members 160 and may be located at the outside of housing 110, in order to install
With replacing filtration members 160.Alternatively, support member 161 can be provided between filtration members 160 and housing 110, to support filtration members
160 and filtration members 160 are spaced apart with housing 110, to increase air inlet area, reduce vapour lock.On the one hand, filtration members 160 can
To prevent the fine particles such as dust, impurity from entering inside the housing 110 of noise-decreasing device 100, on the other hand, filtration members 160 may be used also
To absorb a part of noise, so as to weaken the noise for spreading out of to come from the first air inlet 114.
Alternatively, in one exemplary embodiment of the present invention, as shown in Figure 3, noise-decreasing device 100 can also include
It is arranged on the shunting muscle 170 in gas flow paths.Shunting muscle 170 can be arranged on any suitable position in gas flow paths
Put place.As an example, in one exemplary embodiment of the present invention, shunting muscle 170 can be arranged on the in lower house 113
In gas flow paths between one air inlet 114 and many conducting devices 140.Shunting muscle 170 can further combing air-flow, make
Obtain air-flow more smooth, it is to avoid produce turbulent flow or vortex.
Alternatively, in one exemplary embodiment of the present invention, noise-decreasing device 100 can also include Sound-absorbing member 180.
Sound-absorbing member 180 can be made up of any suitable sound-absorbing or sound-absorbing material.As an example, Sound-absorbing member 180 can be by many
Acoustical cotton that Porous materials are made etc..Sound-absorbing member 180 can further weaken noise.Sound-absorbing member 180 can be arranged on gas
At any position in flow path.As an example, in one exemplary embodiment of the present invention, as shown in Figure 4, sound-absorbing
Component 180 can be arranged on the lower section of many conducting devices 140.Specifically, can be provided with the housing 110 of noise-decreasing device 100
Boss 181, boss 181 can be connected to the outer wall in blower fan cabin 120 in the lower section of many conducting devices 140.Alternatively, in the present invention
An exemplary embodiment in, boss 181 can be connected to the bottom of the outer wall in blower fan cabin 120 and along airintake direction (for example
Horizontal direction) extend and with the spaced apart from inner walls of the housing 110 of noise-decreasing device 100.Sound-absorbing member 180 is arranged on boss 181.
The one side of boss 181 can be used for support Sound-absorbing member 180, and another aspect boss 181 can change gas flow direction.This
Outward, boss 181 and the Sound-absorbing member 180 being arranged on boss 181 can also further weaken noise.As described above, noise
Transmitted along the direction opposite with gas flow direction as illustrated in fig. 8 in housing 110.Specifically, noise is in many conducting devices
Can be transmitted along vertically downward direction in 140.Because Sound-absorbing member 180 is arranged on the lower section of many conducting devices 140, therefore, from
The noise that many conducting devices 140 are passed over can be directly passed on Sound-absorbing member 180, therefore Sound-absorbing member 180 can be more
Noise is effectively absorbed, so as to more effectively reduce the noise passed out from the first air inlet 114.Additionally, noise is being propagated
During can run into boss 181, by boss 181 reflection and/or refraction after can further be weakened.
The present invention also provides a kind of lung ventilator.The lung ventilator includes noise-decreasing device 100.The structure of noise-decreasing device 100 can be with
With reference to the description of appropriate section above, herein for succinct, repeat no more.Additionally, lung ventilator can also include airway, add
The miscellaneous part well known to those skilled in the art such as wet device.
The present invention is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is only intended to
Citing and descriptive purpose, and be not intended to limit the invention in described scope of embodiments.In addition people in the art
Member is it is understood that the invention is not limited in above-described embodiment, teaching of the invention can also be made more kinds of
Variants and modifications, these variants and modifications are all fallen within scope of the present invention.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Claims (12)
1. a kind of noise-decreasing device for lung ventilator, it is characterised in that the noise-decreasing device includes：
Housing, is provided with the first air inlet and the first gas outlet on the housing；And
Blower fan cabin, the blower fan cabin is arranged in the housing, is provided with the blower fan cabin and is connected with first air inlet
Multiple second air inlets.
2. noise-decreasing device as claimed in claim 1, it is characterised in that the multiple second air inlet is arranged on the blower fan cabin
Top.
3. noise-decreasing device as claimed in claim 1, it is characterised in that the multiple second air inlet be of the same size and
Equably arrange.
4. noise-decreasing device as claimed in claim 1, it is characterised in that the cross section face of each of the multiple second air inlet
Product gradually increases along gas flow direction.
5. noise-decreasing device as claimed in claim 1, it is characterised in that the noise-decreasing device further includes there is multiple gases
Many conducting devices of circulation passage, many conducting devices be arranged on first air inlet and the multiple second air inlet it
Between, to connect first air inlet and the multiple second air inlet.
6. noise-decreasing device as claimed in claim 5, it is characterised in that many conducting devices further include supporting part, institute
The inwall that supporting part is connected to the housing is stated, the multiple air ventilation passage is connected to the supporting part, to be supported on
State on supporting part.
7. noise-decreasing device as claimed in claim 6, it is characterised in that the supporting part is dividing plate, the dividing plate is by the shell
Internal body portion is divided into first chamber and second chamber, wherein the first chamber is connected with first air inlet, described second
Chamber is connected with the multiple second air inlet, the two ends of the multiple air ventilation passage be located at respectively the first chamber and
In the second chamber and protrude from the supporting part.
8. noise-decreasing device as claimed in claim 5, it is characterised in that be provided with the inwall of the housing and formed by fuisw rib
Spiral helicine flow-guiding channel, the inlet end of the flow-guiding channel connects with many conducting devices, and the flow-guiding channel goes out
Gas end connects with the multiple second air inlet.
9. noise-decreasing device as claimed in claim 1, it is characterised in that the first air inlet outside is provided with barriers, institute
State at least a portion that barriers are spaced apart with first air inlet and block first air inlet.
10. noise-decreasing device as claimed in claim 1, it is characterised in that the noise-decreasing device further includes filtration members, described
Filtration members are arranged at first air inlet.
11. noise-decreasing devices as claimed in claim 1, it is characterised in that the noise-decreasing device further includes to be arranged on gas
Shunting muscle and/or Sound-absorbing member in flow path.
12. a kind of lung ventilators, it is characterised in that the lung ventilator includes the noise abatement dress as any one of claim 1-11
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235975.8A CN106730203B (en) | 2016-12-28 | 2016-12-28 | Noise reduction device for breathing machine and breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235975.8A CN106730203B (en) | 2016-12-28 | 2016-12-28 | Noise reduction device for breathing machine and breathing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106730203A true CN106730203A (en) | 2017-05-31 |
| CN106730203B CN106730203B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235975.8A Active CN106730203B (en) | 2016-12-28 | 2016-12-28 | Noise reduction device for breathing machine and breathing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112206388A (en) * | 2019-12-30 | 2021-01-12 | 北京怡和嘉业医疗科技股份有限公司 | Noise reduction structure for ventilation therapy device and ventilation therapy device |
| CN113309741A (en) * | 2021-07-13 | 2021-08-27 | 北京易世恒电子技术有限责任公司 | Breathing machine and fan subassembly and fan noise reduction device thereof |
| WO2023082432A1 (en) * | 2021-11-15 | 2023-05-19 | 江苏鱼跃医疗设备股份有限公司 | Ventilator fan duct and ventilator |
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