CN217187327U - Breathing equipment air supply system using single sensor - Google Patents
Breathing equipment air supply system using single sensor Download PDFInfo
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- CN217187327U CN217187327U CN202123399326.0U CN202123399326U CN217187327U CN 217187327 U CN217187327 U CN 217187327U CN 202123399326 U CN202123399326 U CN 202123399326U CN 217187327 U CN217187327 U CN 217187327U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
A breathing equipment air supply system applying a single sensor comprises an air supply pipeline, a turbofan and a laminar flow structure; the air inlet end of the air supply pipeline is communicated with an air source, and the air outlet end of the air supply pipeline is communicated with the air inlet of the humidifying device; the device also comprises a differential pressure sensor and a three-way electromagnetic valve; the differential pressure sensor comprises two pressure detection ports which are respectively communicated with the air inlet end and the air outlet end of the laminar flow structure; the three-way electromagnetic valve comprises three ports, wherein a first port is communicated with a first detection port of the differential pressure sensor, a second port is communicated with an air inlet end of the laminar flow structure, and a third port is communicated with the external environment; when the device works, the first interface is conducted with the second interface, or the first interface is conducted with the third interface. The utility model discloses only use a differential pressure sensor, combine a tee bend solenoid valve to switch differential pressure sensor's pressure measurement port, measure the flow parameter, the pressure parameter of breathing machine respectively, can be according to the nimble measurement cycle who switches the parameter of treatment mode, simplified the system architecture, optimized control scheme, reduced system cost.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to breathing equipment air supply system who uses single sensor.
Background
When using the breathing machine, the pressure of breathing machine can all be aroused when the user breathes in and exhales to fluctuate by a wide margin, and the pressure curve can produce great sunkenly when the user breathes in, can produce great arch during exhaling. For ventilators that do not use a valve, maintaining a stable output of pressure in the Continuous Positive Airway Pressure (CPAP) mode is difficult.
Chinese patent CN 107050600B discloses a ventilator and a control method in CPAP mode, the ventilator includes a flow sensor, a pressure sensor, a processor, a memory and a control program stored in the memory and running on the processor, the control program when executed by the processor realizes the following steps: when the breathing machine is in a CPAP mode, acquiring a flow curve and a pressure curve of the breathing machine, determining an inspiration starting moment P, and increasing the output power of a fan of the breathing machine at the inspiration starting moment P; respectively acquiring the change rates of flow and pressure based on the flow curve and the pressure curve, and intermittently increasing the output power of a fan of the breathing machine when the change rate of the flow is continuously greater than 0 and the change rate of the pressure is less than 0; and intermittently reducing the output power of a fan of the breathing machine in a state that the change rate of the pressure is greater than 0.
In summary, the ventilator in the prior art includes two sensors, namely a flow sensor and a pressure sensor, which are respectively used for acquiring a flow parameter and a pressure parameter during the operation of the ventilator, and the output power of the blower is adjusted according to the two parameters to realize pressure adjustment. Pressure can be adjusted rapidly under the continuous positive airway pressure CPAP mode to a certain extent, so that pressure is stably output, and the comfort of a user is improved.
However, the above prior art has the following disadvantages:
firstly, the flow sensor and the pressure sensor are used for respectively acquiring flow parameters and pressure parameters during the operation of the breathing machine, so that the cost is relatively high, the complexity of the system is increased, and the reliability of the system is not improved to a certain extent;
secondly, the measurement period of the pressure and flow parameters can not be dynamically adjusted, and the application is not flexible enough.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing an use breathing equipment air supply system of single sensor.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a breathing equipment air supply system applying a single sensor comprises an air supply pipeline, a turbofan and a laminar flow structure, wherein the turbofan and the laminar flow structure are sequentially connected to the air supply pipeline in series according to the air flow direction; the air inlet end of the air supply pipeline is communicated with an air source, and the air outlet end of the air supply pipeline is communicated with an air inlet of a humidifying device;
the device also comprises a differential pressure sensor and a three-way electromagnetic valve; the differential pressure sensor comprises two pressure detection ports, a first detection port is communicated with the air inlet end of the laminar flow structure, and a second detection port is communicated with the air outlet end of the laminar flow structure;
the three-way electromagnetic valve comprises three interfaces, wherein the first interface is communicated with a first detection port of the differential pressure sensor, the second interface is communicated with an air inlet end of the laminar flow structure, and the third interface is communicated with the external environment; the three-way electromagnetic valve has two working states through switching, and the first interface is communicated with the second interface in the first working state; and in a second working state, the first interface and the third interface are conducted.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the exhaust fan further comprises an air inlet filter, and the air inlet filter is connected in series with the rear side of the air inlet end of the air supply pipeline and is positioned on the front side of the turbofan.
2. In the above scheme, the exhaust gas purification device further comprises an oxygen mixing chamber, the oxygen mixing chamber is connected in series with the air supply pipeline on the front side or the rear side of the turbofan, and an oxygen input pipeline is communicated with the oxygen mixing chamber.
3. In the above scheme, the laminar flow structure is tubular, a plurality of grid structures are arranged between the air inlet end and the air outlet end of the laminar flow structure along the airflow direction, the grid structures are arranged in parallel at intervals along the radial direction of the laminar flow structure, and a ventilation gap is formed between two adjacent grids.
The utility model discloses a theory of operation and advantage as follows:
the utility model relates to a breathing equipment air supply system applying a single sensor, which comprises an air supply pipeline, a turbofan and a laminar flow structure; the air inlet end of the air supply pipeline is communicated with an air source, and the air outlet end of the air supply pipeline is communicated with the air inlet of the humidifying device; the device also comprises a differential pressure sensor and a three-way electromagnetic valve; the differential pressure sensor comprises two pressure detection ports which are respectively communicated with the air inlet end and the air outlet end of the laminar flow structure; the three-way electromagnetic valve comprises three interfaces, wherein the first interface is communicated with a first detection port of the differential pressure sensor, the second interface is communicated with an air inlet end of the laminar flow structure, and the third interface is communicated with the external environment; when the device works, the first interface is conducted with the second interface, or the first interface is conducted with the third interface.
Compared with the prior art, the utility model discloses only use a differential pressure sensor, combine a three way solenoid valve to switch differential pressure sensor's pressure measurement port, measure the flow parameter, the pressure parameter of breathing machine respectively, can be according to the nimble measurement cycle who switches the parameter of treatment mode, have following advantage:
the method has the advantages that measurement of pressure parameters and flow parameters can be achieved by using a single sensor, the structure of a system is simplified, a control scheme is optimized, and the cost of the system is reduced;
and secondly, the measurement period of the pressure and flow parameters can be dynamically adjusted, and the application is more flexible.
Drawings
FIG. 1 is a first schematic structural diagram of an air supply system according to an embodiment of the present invention;
fig. 2 is a structural schematic block diagram ii of an air supply system according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a laminar flow structure in an air supply system according to an embodiment of the present invention;
fig. 4 is a perspective view of a laminar flow structure in an air supply system according to an embodiment of the present invention.
In the drawings above: 1. a gas supply line; 2. a turbo fan; 3. a laminar flow configuration; 4. an air inlet end; 5. a humidifying device; 6. a differential pressure sensor; 7. a three-way electromagnetic valve; A. a first detection port; B. a second detection port; a. a first interface; b. a second interface; c. a third interface; 8. an intake air filter; 9. an oxygen mixing chamber; 10. an oxygen input pipeline; 11. a grid structure; 12. a vent gap.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
Referring to fig. 1 to 4, an air supply system of a breathing apparatus using a single sensor includes an air supply pipeline 1, a turbo fan 2 and a laminar flow structure 3, which are connected in series to the air supply pipeline 1 in sequence according to an air flow direction; the air inlet end 4 of the air supply pipeline 1 is communicated with an air source, and the air outlet end of the air supply pipeline 1 is communicated with an air inlet of a humidifying device 5.
The device also comprises a differential pressure sensor 6 and a three-way electromagnetic valve 7; the differential pressure sensor 6 comprises two pressure detection ports, a first detection port a is communicated with an air inlet end of the laminar flow structure 3, and a second detection port B is communicated with an air outlet end (namely an air inlet of the humidification device 5) of the laminar flow structure 3.
The three-way electromagnetic valve 7 comprises three ports, a first port a is communicated with a first detection port A of the differential pressure sensor 6, a second port b is communicated with an air inlet end of the laminar flow structure 3, and a third port c is communicated with the external environment; the three-way electromagnetic valve 7 has two working states through switching, in the first working state, the first interface a and the second interface b are conducted, at the moment, the differential pressure sensor 6 is used for detecting the pressure difference between the air inlet end and the air outlet end of the laminar structure 3, and the output signal value of the differential pressure sensor 6 can be converted into the gas flow value flowing through the laminar structure 3; in the second working state, the first interface a and the third interface c are conducted, and at this time, the differential pressure sensor 6 is used as a pressure sensor for detecting a pressure value at the air outlet end of the laminar flow structure 3 (i.e., a pressure value at the air inlet of the humidification device 5), which is positively correlated with a pressure value at the patient end.
Preferably, the air inlet filter 8 is further included, and the air inlet filter 8 is connected in series to the rear side of the air inlet end of the air supply pipeline 1 and is located at the front side of the turbofan 2. The particles, impurities, etc. in the sucked air can be filtered.
The turbofan 2 can rotate through the impeller to apply work to the gas, convert kinetic energy into pressure energy, and output the gas with certain pressure and flow.
The laminar structure 3 can provide certain gas path impedance to play a role in stabilizing the flow.
Air enters an air inlet of the turbofan 2 after being filtered, an air outlet of the turbofan 2 is connected with the laminar flow structure 3, and the air enters the humidifying device 5 for heating and humidifying the air after being stabilized by the laminar flow structure 3 and finally reaches the end of a patient.
As shown in fig. 2, it may further include an oxygen mixing chamber 9, the oxygen mixing chamber 9 is connected in series to the air supply pipe 1 at the front side or the rear side of the turbofan 2, and an oxygen input pipe 10 is connected to the oxygen mixing chamber 9.
As shown in fig. 3 and 4, the laminar flow structure 3 is tubular, a plurality of grid structures 11 are arranged between an air inlet end and an air outlet end of the laminar flow structure 3 along an air flow direction, each grid structure 11 is arranged in parallel and at intervals along a radial direction of the laminar flow structure 3, and an air gap 12 is formed between two adjacent grid structures 11.
Compared with the prior art, the utility model discloses only use a differential pressure sensor, combine a three-way solenoid valve to switch differential pressure sensor's pressure measurement port, measure the flow parameter, the pressure parameter of breathing machine respectively, can be according to the nimble measurement cycle who switches the parameter of treatment mode, have following advantage: the pressure parameter and the flow parameter can be measured by using a single sensor, the system structure is simplified, the control scheme is optimized, and the system cost is reduced; the measuring period of the pressure and flow parameters can be dynamically adjusted, and the application is more flexible.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. A respiratory equipment air supply system using a single sensor is characterized in that:
comprises an air supply pipeline, a turbofan and a laminar flow structure which are sequentially connected in series with the air supply pipeline according to the air flow direction; the air inlet end of the air supply pipeline is communicated with an air source, and the air outlet end of the air supply pipeline is communicated with an air inlet of a humidifying device;
the device also comprises a differential pressure sensor and a three-way electromagnetic valve; the differential pressure sensor comprises two pressure detection ports, wherein a first detection port is communicated with the air inlet end of the laminar flow structure, and a second detection port is communicated with the air outlet end of the laminar flow structure;
the three-way electromagnetic valve comprises three ports, wherein a first port is communicated with a first detection port of the differential pressure sensor, a second port is communicated with an air inlet end of the laminar flow structure, and a third port is communicated with the external environment; the three-way electromagnetic valve has two working states through switching, and the first interface is communicated with the second interface in the first working state; and in a second working state, the first interface and the third interface are conducted.
2. The breathing apparatus air supply system using a single sensor as claimed in claim 1, wherein: the air inlet filter is connected to the rear side of the air inlet end of the air supply pipeline in series and is positioned on the front side of the turbofan.
3. The breathing apparatus air supply system using a single sensor as claimed in claim 1, wherein: the oxygen mixing chamber is connected to the front side or the rear side of the turbofan on the air supply pipeline in series, and an oxygen input pipeline is communicated with the oxygen mixing chamber.
4. The breathing apparatus air supply system using a single sensor as claimed in claim 1, wherein: the laminar flow structure is tubular, a plurality of grid structures are arranged between the air inlet end and the air outlet end of the laminar flow structure along the airflow direction, the grid structures are arranged in parallel at intervals along the radial direction of the laminar flow structure, and a ventilation gap is formed between every two adjacent grids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123399326.0U CN217187327U (en) | 2021-12-30 | 2021-12-30 | Breathing equipment air supply system using single sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123399326.0U CN217187327U (en) | 2021-12-30 | 2021-12-30 | Breathing equipment air supply system using single sensor |
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| Publication Number | Publication Date |
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| CN217187327U true CN217187327U (en) | 2022-08-16 |
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| CN202123399326.0U Active CN217187327U (en) | 2021-12-30 | 2021-12-30 | Breathing equipment air supply system using single sensor |
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- 2021-12-30 CN CN202123399326.0U patent/CN217187327U/en active Active
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