CN204386949U - Respiratory machine blower fan noise reducing mechanism - Google Patents
Respiratory machine blower fan noise reducing mechanism Download PDFInfo
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- CN204386949U CN204386949U CN201420848188.0U CN201420848188U CN204386949U CN 204386949 U CN204386949 U CN 204386949U CN 201420848188 U CN201420848188 U CN 201420848188U CN 204386949 U CN204386949 U CN 204386949U
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Abstract
The utility model embodiment provides a kind of respiratory machine blower fan noise reducing mechanism, comprise noise reduction cabin (1), there is in described noise reduction cabin (1) the first low-pressure cavity (7) and the second low-pressure cavity (8), between described first low-pressure cavity (7) and described second low-pressure cavity (8), link (6) is set, described link (6) is provided with the breathing pipe (9) that several are communicated with described first low-pressure cavity (7) and described second low-pressure cavity (8).This respiratory machine blower fan noise reducing mechanism effectively can reduce respiratory machine fan noise, guarantee user's sleep quality.
Description
Technical field
The utility model relates to the noninvasive ventilator technical field being used for the treatment of sleep apnea syndrome, particularly a kind of respiratory machine blower fan noise reducing mechanism.
Background technique
Respiratory machine is that a kind of normal physiological that can replace, control or change people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviate respiratory function consumption, save the device of heart reservation ability.Sleep-respiratory machine by given pressure, constantly for patient provides oxygen, anoxic problem when improving patient sleeps with this.Sleep-respiratory machine (or being called noninvasive ventilator) is mainly used in treating sleep apnea syndrome, namely severe snoring and with symptom of feeling suffocated, and it can also treat the complication of sleep apnea syndrome, improve blood oxygen concentration during user's nighttime sleep, treatment hypoxemia etc.
Respiratory machine adopts turbofan manufacture pressurized air and then can flow to user for the air breathed, in compressed-air actuated manufacture process, turbofan blade high-speed rotary the change of team produce comparatively big bang noise and aerodynamic noise, these noises by blower fan outwards propagation can have a strong impact on the sleep quality of user.
Model utility content
Technical problem to be solved in the utility model be respiratory machine blower fan in the course of the work noise comparatively large, affect user and normally have a rest, and provide a kind of respiratory machine blower fan noise reducing mechanism that effectively can reduce respiratory machine fan noise, guarantee user's sleep quality.
A kind of respiratory machine blower fan noise reducing mechanism that the utility model embodiment provides, comprise noise reduction cabin, described noise reduction cabin comprises the first low-pressure cavity and the second low-pressure cavity, between described first low-pressure cavity and described second low-pressure cavity, link is set, described link is provided with the breathing pipe that several are communicated with described first low-pressure cavity and described second low-pressure cavity.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the cross-section area that described breathing pipe is placed in one end of described second low-pressure cavity is less than the cross-section area that it is placed in one end of described first low-pressure cavity.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the cross-section area of described breathing pipe increases to its outlet side gradually from its inlet end.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the inwall of described breathing pipe is bus conical surface linearly.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the magnitude setting of described breathing pipe is 8-15; The breathing area of described breathing pipe is 12-50mm
2; The breathing area summation of all described breathing pipes is greater than 100mm
2; The wall thickness of described breathing pipe is 0.8mm-3mm; The length of described breathing pipe is 30-50mm, and the length that described breathing pipe is positioned at described first low-pressure cavity is greater than the length that it is positioned at described second low-pressure cavity.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the magnitude setting of described breathing pipe is 12; The breathing area of described breathing pipe is 30mm
2; The wall thickness of described breathing pipe is 1mm; The length that described breathing pipe is positioned at described first low-pressure cavity is that it is positioned at least three times of described second low-pressure cavity length.
In above-mentioned respiratory machine blower fan noise reducing mechanism, described breathing pipe is positioned at the long 30mm of part of described first low-pressure cavity, is positioned at the long 10mm of part of described second low-pressure cavity.
In above-mentioned respiratory machine blower fan noise reducing mechanism, described noise reduction cabin comprises the lid and cabin body that cooperatively interact, the top of described lid is provided with the air pipe pilot hole for installing air pipe, and described air pipe makes described first low-pressure cavity be communicated with air through described link.
In above-mentioned respiratory machine blower fan noise reducing mechanism, the length that the length that described breathing pipe stretches into described first low-pressure cavity stretches into described first low-pressure cavity than described air pipe is longer.
In above-mentioned respiratory machine blower fan noise reducing mechanism, described lid is provided with second quantity sensor, the end of probe of described second quantity sensor is placed in described second low-pressure cavity, described link is provided with first flow sensor, described first flow sensor is surveyed end and is placed in described first low-pressure cavity.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) respiratory machine blower fan noise reducing mechanism of the present utility model, link is provided with the breathing pipe that several are communicated with the first low-pressure cavity and the second low-pressure cavity, the first low-pressure cavity and the second low-pressure cavity is made to produce draught head, by arranging some breathing pipes, gas is divided into draft, makes airflow direction smooth-going, not easily produce eddy current, thus effectively reduce due to the aerodynamic noise in air flue, adopt the respiratory machine of the utility model noise reducing mechanism can not affect the sleep of user.
(2) respiratory machine blower fan noise reducing mechanism of the present utility model, lid is also provided with first flow sensor and second quantity sensor, the end of probe of first flow sensor and second quantity sensor is placed in the first low-pressure cavity and the second low-pressure cavity and then the atmospheric pressure value measured in the first low-pressure cavity and the second low-pressure cavity respectively, above-mentioned design concept is ingenious, effectively make use of cavity space, make product layout compact and reasonable.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein:
Fig. 1 is the respiratory machine blower fan noise reducing mechanism overall schematic that the utility model one embodiment provides;
Fig. 2 is the respiratory machine blower fan noise reducing mechanism detonation configuration schematic diagram that the utility model one embodiment provides;
Fig. 3 is the plan view of the respiratory machine blower fan noise reducing mechanism that the utility model one embodiment provides;
Fig. 4 be in Fig. 3 A-A to sectional view;
Fig. 5 is the schematic diagram that in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment, link coordinates with soft rubber sleeve;
Fig. 6 is another schematic diagram that in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment, link coordinates with soft rubber sleeve;
Fig. 7 is the plan view of link in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment;
Fig. 8 is the worm's eye view of link in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment;
Fig. 9 is the schematic diagram of lid in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment;
Figure 10 is the schematic diagram of soft rubber sleeve in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment;
Figure 11 is another angle schematic diagram of soft rubber sleeve in the respiratory machine blower fan noise reducing mechanism that provides of the utility model one embodiment.
In figure, reference character is expressed as: 1, noise reduction cabin; 2, soft rubber sleeve; 3, blower fan; 4, lid; 5, cabin body; 6, link; 7, the first low-pressure cavity; 8, the second low-pressure cavity; 9, breathing pipe; 10, air pipe; 11, first flow sensor; 12, second quantity sensor; 13, seal ring; 14, suction port; 15, air outlet; 16, arc convex; 17, curve bath; 18, gas port; 19, air pipe pilot hole; 20, sensor pilot hole.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As illustrated in fig. 1 and 2, be the respiratory machine blower fan noise reducing mechanism overall schematic that the utility model embodiment provides, described respiratory machine blower fan noise reducing mechanism comprises noise reduction cabin 1, is provided with soft rubber sleeve 2 in noise reduction cabin 1, blower fan 3 is arranged in soft rubber sleeve 2, is high-pressure area in soft rubber sleeve 2.
Soft rubber sleeve 2 is cylindric, employing silica gel is made, the upper end open of soft rubber sleeve 2 is suction port 14, lower ending opening is air outlet 15, the bore of air outlet 15 is less than the bore of suction port 14, and compared with the cylinder near suction port 14, the cylinder near air outlet 15 is to air outlet 15 indentation, in addition formed suction port 14 sidewall on form some arc convex 16 along its circumference, the outer side surface of arc convex 16 forms chuck.The inwall of soft rubber sleeve 2 forms convex stupefied, the outer wall of blower fan 3 forms projection, when blower fan 3 loads soft rubber sleeve 2, protruding by convex stupefied spacing, the top of blower fan 3 and bottom are not all contacted, to reduce the outside transmission of the vibrations produced when blower fan 3 works with soft rubber sleeve 2.
Noise reduction cabin 1 comprises the lid 4 and cabin body 5 that cooperatively interact, lid 4 and cabin body 5 are fastened and connected or by screw assembly connection, and link 6 is provided with between lid 4 and cabin body 5, the contour edge of link 6 is seal ring 13, and the material of seal ring 13 is sealing flexible glue.Link 6 forms the curve bath 17 of arc convex 16 insertion being suitable for soft rubber sleeve 2, the chuck of arc convex 16 and the groove of curve bath 17, along clamping matching, make the top of soft rubber sleeve 2 detachably be fixedly connected with link 6.
As shown in Figure 3, the connection contact segment between lid 4 and cabin body 5 is sealed by the seal ring 13 of link 6 contour edge.Form the first low-pressure cavity 7 between the inwall of cabin body 5, the outer wall of soft rubber sleeve 2 and link 6, form air pressure in the second low-pressure cavity 8, first low-pressure cavity 7 between lid 4 and link 6 higher than the air pressure in the second low-pressure cavity 8.
As shown in Figure 3, the top of lid 4 is provided with air pipe pilot hole 19, and air pipe pilot hole 19 is suitable for sealing grafting air pipe 10, and the inlet end of air pipe 10 is gas port 18, and air pipe 10 further hermetically passing link 6 makes the first low-pressure cavity 7 be communicated with air.Particularly, air pipe 10 is provided with sealing flexible glue with the position of the Contact of lid 4, link 6.
As shown in Figure 4, link 6 is provided with the breathing pipe 9 that several are communicated with the first low-pressure cavity 7 and the second low-pressure cavity 8, for the gas entered is divided into draft, makes airflow direction smooth-going, not easily produce eddy current, thus effectively reduce due to the aerodynamic noise in air flue.The axis of breathing pipe 9 and link 6 place plane orthogonal, the cross-section area that breathing pipe 9 is placed in one end of the second low-pressure cavity 8 is less than the cross-section area that it is placed in one end of the first low-pressure cavity 7, arranging of breathing pipe 9 forms air resistance source, makes the first low-pressure cavity 7 and the second low-pressure cavity 8 produce draught head.The shape of cross section of breathing pipe 9 can be circular, square, triangle etc., is not specifically limited in the utility model to this.
In the present embodiment, the cross-section area of breathing pipe 9 increases to its outlet side gradually from its inlet end, and particularly, the inwall of breathing pipe 9 is bus conical surface linearly.The length that the length that breathing pipe 9 stretches into the first low-pressure cavity 7 stretches into the first low-pressure cavity 7 than air pipe 10 is longer.
According to product specification needs, the magnitude setting of breathing pipe 9 is selected to be 8-15; The breathing area of breathing pipe 9 is 12-50mm
2; The breathing area summation of all breathing pipes 9 is greater than 100mm
2; The wall thickness of breathing pipe 9 is 0.8mm-3mm; The length of breathing pipe 9 is 30-50mm, and the length that breathing pipe 9 is positioned at the first low-pressure cavity 7 is greater than the length that it is positioned at the second low-pressure cavity 8, and the length that preferred breathing pipe 9 is positioned at the first low-pressure cavity 7 is that it is positioned at least three times of the second low-pressure cavity 8 length.
In the present embodiment, the magnitude setting of breathing pipe 9 is 12, closely be provided with 6 breathing pipes 9 in the side of air pipe pilot hole, the position near air pipe pilot hole is provided with 2 breathing pipes 9 to opposite side and a segment distance of being separated by arranges 4 breathing pipes 9, as shown in Figure 5; The breathing area of breathing pipe 9 is 30mm
2; The wall thickness of breathing pipe 9 is 1mm; The length of breathing pipe 9 is 50mm, is positioned at the long 30mm of part of the first low-pressure cavity 7, is positioned at the long 10mm of part of the second low-pressure cavity 8.
As shown in Figure 6, respiratory machine blower fan noise reducing mechanism also comprises the first flow sensor 11 for measuring the first low-pressure cavity 7 internal air pressure value and the second quantity sensor 12 for measuring the second low-pressure cavity 8 internal air pressure value.First flow sensor 11 is arranged on link 6, and seals the sensor pilot hole 20 on grafting lid 1, and first flow sensor 11 end of probe is placed in the first low-pressure cavity 7.Second quantity sensor 12 is arranged on lid 4, and the end of probe of second quantity sensor 12 is placed in the second low-pressure cavity 8.Particularly, the position that first flow sensor 11 contacts with sensor pilot hole 20 is provided with sealing flexible glue.The end of probe of first flow sensor and second quantity sensor is placed in the first low-pressure cavity and the second low-pressure cavity and then the atmospheric pressure value measured in the first low-pressure cavity and the second low-pressure cavity respectively, effectively make use of cavity space, make product layout compact and reasonable, and facilitate the measurement of atmospheric pressure value, finally go out gas flow according to differential pressure measurement.
In other embodiments, according to product specification needs, the magnitude setting of breathing pipe 9 also may be selected to be 8,10,13,15 etc.; The breathing area of breathing pipe 9 is 12mm
2, 18mm
2, 20mm
2, 35mm
2, 42mm
2, 50mm
2deng; The wall thickness of breathing pipe 9 is 0.8mm, 0.11mm, 1.6mm, 2mm, 2.5mm, 3mm; The length of breathing pipe 9 is 30mm, 38mm, 43mm, 47mm, 50mm etc., and the length that breathing pipe 9 is positioned at the first low-pressure cavity 7 and the second low-pressure cavity 8 part also can be selected to arrange as required voluntarily, the length as breathing pipe 9 being positioned at the first low-pressure cavity 7 is set to it and is positioned at four times, five times, six times of the second low-pressure cavity 8 length etc.
In other embodiments, the arrangement position of breathing pipe 9 can need from Row sum-equal matrix according to product specification.
In other embodiments, according to product specification needs, it is the conical surface of curve that the inwall of breathing pipe 9 can be designed to stepped or bus, can realize the purpose of this utility model equally.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a respiratory machine blower fan noise reducing mechanism, it is characterized in that: comprise noise reduction cabin (1), described noise reduction cabin (1) comprises the first low-pressure cavity (7) and the second low-pressure cavity (8), between described first low-pressure cavity (7) and described second low-pressure cavity (8), link (6) is set, described link (6) is provided with the breathing pipe (9) that several are communicated with described first low-pressure cavity (7) and described second low-pressure cavity (8).
2. respiratory machine blower fan noise reducing mechanism according to claim 1, is characterized in that: the cross-section area that described breathing pipe (9) is placed in one end of described second low-pressure cavity (8) is less than the cross-section area that it is placed in one end of described first low-pressure cavity (7).
3. respiratory machine blower fan noise reducing mechanism according to claim 2, is characterized in that: the cross-section area of described breathing pipe (9) increases to its outlet side gradually from its inlet end.
4. respiratory machine blower fan noise reducing mechanism according to claim 3, is characterized in that: the inwall of described breathing pipe (9) is bus conical surface linearly.
5. respiratory machine blower fan noise reducing mechanism according to claim 2, is characterized in that: the magnitude setting of described breathing pipe (9) is 8-15; The breathing area of described breathing pipe (9) is 12-50mm
2; The breathing area summation of all described breathing pipes (9) is greater than 100mm
2; The wall thickness of described breathing pipe (9) is 0.8mm-3mm; The length of described breathing pipe (9) is 30-50mm, and the length that described breathing pipe (9) is positioned at described first low-pressure cavity (7) is greater than the length that it is positioned at described second low-pressure cavity (8).
6. respiratory machine blower fan noise reducing mechanism according to claim 5, is characterized in that: the magnitude setting of described breathing pipe (9) is 12; The breathing area of described breathing pipe (9) is 30mm
2; The wall thickness of described breathing pipe (9) is 1mm; The length that described breathing pipe (9) is positioned at described first low-pressure cavity (7) is that it is positioned at least three times of described second low-pressure cavity (8) length.
7. respiratory machine blower fan noise reducing mechanism according to claim 6, it is characterized in that: described breathing pipe (9) is positioned at the long 30mm of part of described first low-pressure cavity (7), be positioned at the long 10mm of part of described second low-pressure cavity (8).
8. according to the arbitrary described respiratory machine blower fan noise reducing mechanism of claim 1-7, it is characterized in that: described noise reduction cabin (1) comprises the lid (4) and cabin body (5) that cooperatively interact, the top of described lid (4) is provided with the air pipe pilot hole (19) for installing air pipe (10), and described air pipe (10) makes described first low-pressure cavity (7) be communicated with air through described link (6).
9. respiratory machine blower fan noise reducing mechanism according to claim 8, is characterized in that: the length that the length that described breathing pipe (9) stretches into described first low-pressure cavity (7) stretches into described first low-pressure cavity (7) than described air pipe (10) is longer.
10. respiratory machine blower fan noise reducing mechanism according to claim 8, it is characterized in that: described lid (4) is provided with second quantity sensor (12), the end of probe of described second quantity sensor (12) is placed in described second low-pressure cavity (8), described link (6) is provided with first flow sensor (11), described first flow sensor (11) end of probe is placed in described first low-pressure cavity (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848188.0U CN204386949U (en) | 2014-12-26 | 2014-12-26 | Respiratory machine blower fan noise reducing mechanism |
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| CN201420848188.0U CN204386949U (en) | 2014-12-26 | 2014-12-26 | Respiratory machine blower fan noise reducing mechanism |
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| CN204386949U true CN204386949U (en) | 2015-06-10 |
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| CN201420848188.0U Active CN204386949U (en) | 2014-12-26 | 2014-12-26 | Respiratory machine blower fan noise reducing mechanism |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730204A (en) * | 2016-12-30 | 2017-05-31 | 吉林省沃鸿医疗器械制造有限公司 | Portable respirator and its system |
| CN110681015A (en) * | 2019-11-22 | 2020-01-14 | 湖南万脉医疗科技有限公司 | Breathing machine sampling structure |
| CN112190803A (en) * | 2020-10-16 | 2021-01-08 | 湖南万脉医疗科技有限公司 | Noise reduction method and noise reduction cover device for breathing machine |
| CN113236606A (en) * | 2021-05-28 | 2021-08-10 | 湖南比扬医疗科技有限公司 | Sound-reducing box and breathing machine |
| CN115507065A (en) * | 2022-09-13 | 2022-12-23 | 杭州贝丰科技股份有限公司 | Low-noise breathing machine air source box |
| CN115591069A (en) * | 2022-10-31 | 2023-01-13 | 江苏鱼跃医疗设备股份有限公司（Cn） | Air duct assembly of breathing machine and portable breathing machine |
-
2014
- 2014-12-26 CN CN201420848188.0U patent/CN204386949U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730204A (en) * | 2016-12-30 | 2017-05-31 | 吉林省沃鸿医疗器械制造有限公司 | Portable respirator and its system |
| CN106730204B (en) * | 2016-12-30 | 2023-09-26 | 吉林省沃鸿医疗器械制造有限公司 | Portable respirator and system thereof |
| CN110681015A (en) * | 2019-11-22 | 2020-01-14 | 湖南万脉医疗科技有限公司 | Breathing machine sampling structure |
| CN112190803A (en) * | 2020-10-16 | 2021-01-08 | 湖南万脉医疗科技有限公司 | Noise reduction method and noise reduction cover device for breathing machine |
| CN113236606A (en) * | 2021-05-28 | 2021-08-10 | 湖南比扬医疗科技有限公司 | Sound-reducing box and breathing machine |
| CN115507065A (en) * | 2022-09-13 | 2022-12-23 | 杭州贝丰科技股份有限公司 | Low-noise breathing machine air source box |
| CN115591069A (en) * | 2022-10-31 | 2023-01-13 | 江苏鱼跃医疗设备股份有限公司（Cn） | Air duct assembly of breathing machine and portable breathing machine |
| WO2024093006A1 (en) * | 2022-10-31 | 2024-05-10 | 江苏鱼跃医疗设备股份有限公司 | Air duct assembly for ventilator and portable ventilator |
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