CN204797862U - Air velocity transducer , air circulation system and medical imaging equipment - Google Patents
Air velocity transducer , air circulation system and medical imaging equipment Download PDFInfo
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- CN204797862U CN204797862U CN201520351884.5U CN201520351884U CN204797862U CN 204797862 U CN204797862 U CN 204797862U CN 201520351884 U CN201520351884 U CN 201520351884U CN 204797862 U CN204797862 U CN 204797862U
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- air
- velocity transducer
- cantilever
- air velocity
- medical imaging
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Abstract
The utility model provides an air velocity transducer, an air circulation system and a medical imaging equipment. Air velocity transducer includes: a base, it includes a cantilever and a pedestal, the cantilever with the pedestal links to each other, and under the exogenic action can for the pedestal bending deformation, an air sensing board, with cantilever fixed connection, and with form a contained angle between the cantilever, a resistance, dispose in on the cantilever. The utility model discloses an air velocity transducer's simple structure, the cost is lower, also is favorable to simplifying the structure of air circulation system and medical imaging equipment, reduction in production cost.
Description
Technical field
This utility model relates to technical field of medical equipment, particularly a kind of air velocity transducer, a kind of air circulation system and a kind of medical imaging devices.
Background technology
Medical imaging devices applies comparatively widely in medical industry, the inside of medical imaging devices is provided with many electronic components, in order to maintain the stability of these electronic component functions, need to arrange air circulation system in medical imaging devices inside, to help electronic element radiating, air circulation system generally comprises pipeline, passes into the air of flowing in pipeline.
In order to ensure medical imaging devices safe handling, medical imaging devices is also provided with smoke-detectors, under many circumstances, when air mass flow is undesirable, when such as air mass flow exceeds preset value, smoke-detectors can give the alarm, and affects the normal operation of medical imaging devices.In addition, when air mass flow is unstable, the radiating effect of the electronic component of medical imaging devices can be affected, be unfavorable for maintaining the stability of medical imaging devices function and extending the life-span of medical imaging devices.
In order to control the flow of air, existing air circulation system generally controls the stability of air mass flow in medical imaging devices by complicated electronic component, as adopted the feedback system based on complicated circuit to control air mass flow, or the feedback system based on PID controller (proportional-integral derivative controller) is adopted to control air mass flow.
But existing air circulation system structure is too complicated, and cost is higher.In addition, existing air circulation system is not all design according to the particular demands of medical imaging devices.
Utility model content
In view of this, the purpose of this utility model proposes a kind of air velocity transducer, and structure is simple, and cost is lower.
Another object of the present utility model proposes a kind of air circulation system, and structure is simple, and cost is lower, and has the stable advantage of air mass flow.
Another object of the present utility model proposes a kind of medical imaging devices, and it has simple, the lower-cost air circulation system of structure, and air mass flow in described medical imaging devices is comparatively stable.
This utility model provides a kind of air velocity transducer, and it comprises: a base, and it comprises a cantilever and a pedestal, and described cantilever is connected with described pedestal, and under external force can relative to described pedestal flexural deformation; One air sensory panel, is fixedly connected with described cantilever, and and between described cantilever shape have angle; One resistance, is configured on described cantilever.
In a kind of illustrative examples of air velocity transducer, described air sensory panel is perpendicular to described cantilever.
In a kind of illustrative examples of air velocity transducer, described cantilever has a first end and one second end, and described first end is relative with described second end, and described first end is connected with described pedestal, and described second end is connected with described air sensory panel.
In a kind of illustrative examples of air velocity transducer, described pedestal offers a cell body, and described cell body is adjacent with described cantilever, and described second end is towards the unsettled setting in side of described cell body.
In a kind of illustrative examples of air velocity transducer, described resistance is laminated structure.
In a kind of illustrative examples of air velocity transducer, described resistance is provided with plural gap.
In a kind of illustrative examples of air velocity transducer, described resistance is piezoresistance.
This utility model additionally provides a kind of air circulation system, and it comprises: any one air velocity transducer above-mentioned; One integrated circuit, is electrically connected with described air velocity transducer, and the wind speed for sensing according to described air velocity transducer calculates the magnitude of voltage that need act on fan; One fan governor, is electrically connected with described integrated circuit.
This utility model additionally provides a kind of medical imaging devices, and described medical imaging devices comprises above-mentioned air circulation system.
In a kind of illustrative examples of medical imaging devices, described medical imaging devices is ct apparatus, MR imaging apparatus or molecular imaging apparatus.
As can be seen from such scheme, in air velocity transducer of the present utility model, air circulation system and medical imaging devices, air thrust acts on air sensory panel, cantilever and resistance occur bending and deformation under the drive of air sensory panel, the resistance of resistance is also corresponding to change, air velocity transducer can obtain the size of wind speed according to the change of resistance, and air circulation system effectively controls the stability of air mass flow according to the size of wind speed.The stable air circulation system of gas flow can help the electronic component Homogeneouslly-radiating of medical imaging devices, is conducive to the service life extending medical imaging devices.In addition, the structure of air velocity transducer is simple, and cost is lower, is also conducive to the structure simplifying air circulation system and medical imaging devices, reduces production cost.
Accompanying drawing explanation
Preferred embodiment of the present utility model will be described in detail by referring to accompanying drawing below, the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present utility model, in accompanying drawing:
Fig. 1 is the schematic perspective view of the air velocity transducer of an embodiment of the present utility model.
The resistance schematic diagram that Fig. 2 is the air velocity transducer shown in Fig. 1.
Fig. 3 is in the schematic perspective view of deformation state for the air velocity transducer by wind effect cantilever shown in Fig. 1 and resistance.
Fig. 4 is the configuration diagram of the air circulation system of an embodiment of the present utility model.
In above-mentioned accompanying drawing, the Reference numeral adopted is as follows:
10 air velocity transducers
12 bases
122 cantilevers
123 pedestals
124 first ends
125 second ends
126 cell bodies
13 air sensory panels
14 resistance
20 integrated circuits
30 fan governors
D direction
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, by the following examples this utility model is further described.
Fig. 1 is the schematic perspective view of the air velocity transducer of an embodiment of the present utility model.Refer to Fig. 1, the air velocity transducer 10 of the present embodiment is roughly L-type structure, and it comprises base 12, air sensory panel 13 and resistance 14.Base 12 comprises cantilever 122 and pedestal 123, and cantilever 122 is connected with pedestal 123, and can bend distortion relative to pedestal 123 under external force.Air sensory panel 13 is fixedly connected with cantilever 122, and and between cantilever 122 shape have angle.Resistance 14 is configured on cantilever 122.
Particularly, base 12 is roughly cuboid platy structure, and cantilever 122 has first end 124 and the second end 125, and first end 124 is relative with the second end 125, and first end 124 is connected with pedestal 123, and the second end 125 is connected with air sensory panel 13.Time not by External Force Acting, the upper surface of cantilever 122 is concordant with the upper surface of pedestal 123.Pedestal 123 offers cell body 126, and cell body 126 is adjacent with cantilever 122, and cantilever 122 is positioned at the top of cell body 126, and the second end 125 is towards the unsettled setting in side of cell body 126.Cell body 126 leaves the space needed for cantilever 122 flexural deformation to cantilever 122, and the shape of cell body 126 is not limited with Fig. 3.The material of base 12 can be plastics, but not as limit, in other embodiments, the material that base 12 can be able to be deformed under external force by other is made.
Air sensory panel 13 is perpendicular to cantilever 122, and the angle namely between air sensory panel 13 and cantilever 122 is 90 degree, and is positioned at the top of cantilever 122.In other embodiments, the angle between air sensory panel 13 and cantilever 122 also can slightly larger than 90 degree.Air sensory panel 13 is slab construction, and it is connected by small one and large one plate body and forms, and wherein the thrust of moving air is on large plate body, and little plate body is connected with cantilever 122.
The resistance schematic diagram that Fig. 2 is the air velocity transducer shown in Fig. 1.Refer to Fig. 2, resistance 14 is laminated structure, which is provided with plural gap, and resistance 14 is close on cantilever 122, more specifically, and resistance 14 such as piezoresistance, the resistance be namely made up of piezoelectric.When cantilever 122 is by External Force Acting distortion, resistance 14 also can and then be out of shape, and the pressure acted on resistance 14 temporarily can change the symmetry of piezoelectric crystal structure, and change the conductive mechanism of piezoelectric, the resistance showing as resistance 14 changes.Air velocity transducer 10 also comprises treatment circuit (not shown), and described treatment circuit and resistance 14 are electrically connected, and treatment circuit can draw according to the computing the resistor value of resistance 14 wind speed that air velocity transducer 10 senses.
Fig. 3 is in the schematic perspective view of deformation state for the air velocity transducer by wind effect cantilever shown in Fig. 1 and resistance.Refer to Fig. 3, during work, moving air acts on air sensory panel 13 along direction D, air sensory panel 13 is subject to air thrust, because air sensory panel 13 is fixedly connected with cantilever 122, under the drive of air sensory panel 13, cantilever 122 is also corresponding to be subject to active force and to occur bending and deformation relative to pedestal 123.Resistance 14 also follows cantilever 122 to deform, and speed air flow (i.e. wind speed) is larger, and the deflection of resistance 14 is larger, and the resistance of resistance 14 is larger, and air velocity transducer 10 can obtain the size of wind speed according to the computing the resistor value of resistance 14.
Fig. 4 is the configuration diagram of the air circulation system of an embodiment of the present utility model.Refer to Fig. 4, this utility model also provides a kind of air circulation system, described air circulation system comprises above-mentioned air velocity transducer 10, integrated circuit 20 and fan governor 30, integrated circuit 20 and air velocity transducer 10 are electrically connected, fan governor 30 is electrically connected with integrated circuit 20 and fan, and fan governor 30 is for controlling rotation speed of the fan.Integrated circuit 20 calculates the magnitude of voltage that need act on fan for the size of the wind speed sensed according to air velocity transducer 10, and described magnitude of voltage is transferred to fan governor 30, is controlled the rotating speed of fan by fan governor 30; When the rotating speed of fan changes, the wind speed that air velocity transducer 10 senses also respective change, namely after fan governor 30 controls rotation speed of the fan, air velocity transducer 10 can obtain feedback information by senses wind speed, until the flow of the air of whole air circulation system is adjusted to preset value, guarantee the stability of the gas flow of air circulation system.
Air circulation system can install plural air velocity transducer 10, to avoid the departure caused because single air velocity transducer 10 image data is inaccurate, integrated circuit 20 can need according to the sensing result comprehensive descision of multiple air velocity transducer 10 magnitude of voltage that acts on fan, is conducive to the stability of the gas flow promoting air circulation system.
This utility model also provides a kind of medical imaging devices, medical imaging devices is such as ct apparatus, MR imaging apparatus or molecular imaging apparatus, but not as limit, medical imaging devices comprises any one air circulation system of above-described embodiment, because air circulation system effectively can control the flow of gas, thus the electronic component Homogeneouslly-radiating of medical imaging devices can be guaranteed, medical imaging devices performance can be made more stable, and be conducive to the service life extending medical imaging devices.
Air velocity transducer of the present utility model, air circulation system and medical imaging devices at least have following advantage:
1. in air velocity transducer of the present utility model, air circulation system and medical imaging devices, air thrust acts on air sensory panel, cantilever and resistance occur bending and deformation under the drive of air sensory panel, the resistance of resistance is also corresponding to change, air velocity transducer can obtain the size of wind speed according to the change of resistance, and air circulation system effectively controls the stability of air mass flow according to the size of wind speed.The stable air circulation system of gas flow can help the electronic component Homogeneouslly-radiating of medical imaging devices, is conducive to the service life extending medical imaging devices.In addition, the structure of air velocity transducer is simple, and cost is lower, is also conducive to the structure simplifying air circulation system and medical imaging devices, reduces production cost.
2. in an embodiment of air velocity transducer of the present utility model, air circulation system and medical imaging devices, resistance is piezoresistance, and piezoresistance is stable performance at normal temperatures, and distortion is reliable, not only can improve the sensing precision of air velocity transducer, also help reduction production cost.
3. in an embodiment of air velocity transducer of the present utility model, air circulation system and medical imaging devices, the material of base is plastics, cheap, is conducive to reducing production cost.
4. in an embodiment of air velocity transducer of the present utility model, air circulation system and medical imaging devices, pedestal offers cell body, cell body is adjacent with cantilever, second end of cantilever is towards the unsettled setting in side of cell body, by the design of cell body, cantilever can be made to obtain certain bending space when bending distortion.
5. in an embodiment of medical imaging devices of the present utility model, user only slightly need transform the detachable pipeline of medical imaging devices, and do not need the original structure changing original medical imaging devices, not only maintain easily, also can not increase extra cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an air velocity transducer (10), is characterized in that, described air velocity transducer (10) comprising:
One base (12), it comprises a cantilever (122) and a pedestal (123), described cantilever (122) is connected with described pedestal (123), and under external force can relative to described pedestal (123) flexural deformation;
One air sensory panel (13), is fixedly connected with described cantilever (122), and and between described cantilever (122) shape have angle;
One resistance (14), is configured on described cantilever (122).
2. air velocity transducer (10) as claimed in claim 1, it is characterized in that, described air sensory panel (13) is perpendicular to described cantilever (122).
3. air velocity transducer (10) as claimed in claim 1, it is characterized in that, described cantilever (122) has a first end (124) and one second end (125), described first end (124) is relative with described second end (125), described first end (124) is connected with described pedestal (123), and described second end (125) is connected with described air sensory panel (13).
4. air velocity transducer (10) as claimed in claim 3, it is characterized in that, described pedestal (123) offers a cell body (126), described cell body (126) is adjacent with described cantilever (122), and described second end (125) is towards the unsettled setting in side of described cell body (126).
5. air velocity transducer (10) as claimed in claim 1, it is characterized in that, described resistance (14) is laminated structure.
6. air velocity transducer (10) as claimed in claim 5, it is characterized in that, described resistance (14) is provided with plural gap.
7. air velocity transducer (10) as claimed in claim 1, it is characterized in that, described resistance (14) is piezoresistance.
8. an air circulation system, is characterized in that, described air circulation system comprises:
Just like the air velocity transducer (10) described in claim 1-7 any one;
One integrated circuit (20), is electrically connected with described air velocity transducer (10), and the wind speed for sensing according to described air velocity transducer (10) calculates the magnitude of voltage that need act on fan;
One fan governor (30), is electrically connected with described integrated circuit (20).
9. a medical imaging devices, is characterized in that, described medical imaging devices comprises air circulation system as claimed in claim 8.
10. medical imaging devices as claimed in claim 9, it is characterized in that, described medical imaging devices is ct apparatus, MR imaging apparatus or molecular imaging apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351884.5U CN204797862U (en) | 2015-05-27 | 2015-05-27 | Air velocity transducer , air circulation system and medical imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351884.5U CN204797862U (en) | 2015-05-27 | 2015-05-27 | Air velocity transducer , air circulation system and medical imaging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204797862U true CN204797862U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520351884.5U Expired - Fee Related CN204797862U (en) | 2015-05-27 | 2015-05-27 | Air velocity transducer , air circulation system and medical imaging equipment |
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| Country | Link |
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| CN (1) | CN204797862U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840504A (en) * | 2017-01-17 | 2017-06-13 | 青海大学 | Small-sized field anemometry experimental rig and method |
| US20190376997A1 (en) * | 2018-06-06 | 2019-12-12 | Uti Limited Partnership | System and method for determining airspeed |
| CN111693101A (en) * | 2020-07-31 | 2020-09-22 | 中国科学技术大学 | Flow velocity sensor based on deformation bending contact |
-
2015
- 2015-05-27 CN CN201520351884.5U patent/CN204797862U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840504A (en) * | 2017-01-17 | 2017-06-13 | 青海大学 | Small-sized field anemometry experimental rig and method |
| US20190376997A1 (en) * | 2018-06-06 | 2019-12-12 | Uti Limited Partnership | System and method for determining airspeed |
| US11630119B2 (en) * | 2018-06-06 | 2023-04-18 | Uti Limited Partnership | System and method for determining airspeed |
| CN111693101A (en) * | 2020-07-31 | 2020-09-22 | 中国科学技术大学 | Flow velocity sensor based on deformation bending contact |
| CN111693101B (en) * | 2020-07-31 | 2021-08-13 | 中国科学技术大学 | Flow velocity sensor based on deformation bending contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |