CN103893863A - Differential pressure type flow sensor accumulated water processing device and breathing machine with same - Google Patents
Differential pressure type flow sensor accumulated water processing device and breathing machine with same Download PDFInfo
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- CN103893863A CN103893863A CN201210575909.0A CN201210575909A CN103893863A CN 103893863 A CN103893863 A CN 103893863A CN 201210575909 A CN201210575909 A CN 201210575909A CN 103893863 A CN103893863 A CN 103893863A
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- flow transducer
- differential flow
- valve body
- metal valve
- accumulated water
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Abstract
The invention discloses a differential pressure type flow sensor accumulated water processing device and a breathing machine with the same. The accumulated water processing device comprises a metal valve, a differential pressure type flow sensor used for measuring gas flow in the metal valve, and a heating device for heating the metal valve and the differential pressure type flow sensor. By being heated, the metal valve and the differential pressure type flow sensor can maintain consistent in temperature, and it is guaranteed that steam in the metal valve and the differential pressure type flow sensor can not be condensed in a sampling channel due to temperature changes to influence detection precision of the differential pressure type flow sensor. Due to the fact that the heating device can control the heating temperature, an independent temperature detection device for detecting the temperature of the valve is not needed, the metal vale is an integrated metal component and good in heat conducting effect, and temperature uniformity can be effectively guaranteed. When the differential pressure type flow sensor is tightly attached to a flat surface, the metal valve and the differential pressure type flow sensor can be heated only through one heating device, and the temperature is convenient to control.
Description
Technical field
The present invention relates to respirator expiration end pressure checkout gear, relate in particular to a kind of differential flow transducer accumulated water treatment device and there is the respirator of this device.
Background technology
Respirator, is that a kind of normal physiological that can replace, control or change people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviates work of breathing consumption, save the device of heart reservation ability, thereby respirator has become indispensable apparatus in clinical treatment; Its positive Yu in first aid, anesthesia, ICU and respiratory therapy field carrys out Yu's extensive use;
For the patient who is receiving treatment, the size control of ventilation is very important, particularly infant patient and Cavity in Critical Patients, and the accurate control that this not only needs flow, more needs the sensitive reaction to airway pressure.Also, must reach in setting pressure in limited time output electrical signals quickly and accurately in system, application valve body is closed, and stops air feed; And can make fast valve body open in system in limited time on lower than setting pressure, recover air feed.Therefore pressure-detecting device is vital for the control of the aspect such as precision, safety of the medical apparatus and instruments such as respirator, anesthetic machine.
Respirator expiration end pressure detects, and mostly uses at present differential flow transducer and ultrasonic type sensor.Ultrasonic type sensor price is higher, and differential flow transducer is more cheap, but because there being by-pass flow passage to have small air flow stream mistake, contain aqueous vapor if be sampled gas, condense in possibly in sampling channel, very large on the impact of its precision, can cause signal to be forbidden maybe cannot detect.In fact because current most sensors have with a certain distance from outlet valve, residing temperature is lower than expiration valve body, still can cause the problem of condensation of moisture when gas arrives sensor because of the decline of temperature.
Summary of the invention
The technical problem that the present invention solves is: a kind of respirator is provided, adopts differential flow transducer to carry out flow detection, and keep differential flow transducer and outlet valve equality of temperature to realize avoiding condensing of aqueous vapor in differential flow transducer by heating; In the time that being closely connected with valve body, differential flow transducer can adopt same heater to heat simultaneously; Need divide and be arranged while being connected by sampling tube when being subject to the differential flow transducer of spatial limitation and valve body, heater can be set respectively the two and sampling tube are heated.
For reaching this object, the present invention by the following technical solutions:
A kind of differential flow transducer accumulated water treatment device, comprises metal valve body, for measuring the differential flow transducer of gas flow in metal valve body, and for heating the heater of described metal valve body and described differential flow transducer.
Preferably, described metal valve body and described differential flow transducer adopt same heater to heat simultaneously.
Further, described heater is metal heater, and described metal heater is fixedly connected on and in described metal valve body, heats described metal valve body and described differential flow transducer simultaneously.
Preferably, described metal valve body and described differential flow transducer arrange respectively heater, heat separately separately.
Further, described heater is metal heater, and described metal heater is two and is fixedly connected with respectively and heats described metal valve body and described differential flow transducer.
Further, in described metal valve body main body, be provided with a burnishing surface, described differential flow transducer fits tightly on described burnishing surface.
What further, described heater and described differential flow transducer were symmetrical is arranged in described metal valve body both sides.
Further, whole described metal valve body is bulk metal parts, is provided with air inlet, gas outlet and sampling conduit in described metal valve body.
Further, described sampling conduit is directly boring formation in metal valve body.
A kind of respirator, described respirator adopts differential flow transducer to carry out flow detection, and described differential flow transducer has differential flow transducer accumulated water treatment device as above.
Beneficial effect of the present invention is: by heating of metal valve body and sensor, make to keep uniform temp between the two, ensure that its internal steam can, because variations in temperature condenses in sampling channel, not affect the accuracy of detection of differential flow transducer; Can control heating-up temperature owing to being provided with heater, without more separately set temperature checkout gear valve body temperature is detected, metal valve body is bulk metal parts, good heat conduction effect can effectively ensure that temperature is unified; Differential flow transducer fits tightly while setting on described burnishing surface only needs a heater just can complete the heating to metal valve body and differential flow transducer, is convenient to control temperature.
Brief description of the drawings
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is differential flow transducer structural representation.
In figure:
1, metal valve body; 2, differential flow transducer; 3, metal heater; 4, burnishing surface.
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by detailed description of the invention.
As shown in Figure 1, in the present embodiment, the differential flow transducer accumulated water treatment device of one of the present invention, it comprises metal valve body 1, described metal valve body 1 is bulk metal parts, the pipeline being connected with other parts in described metal valve body 1 is by directly holing and form in metal valve body 1, include air inlet and gas outlet, in described metal valve body 1, there is a burnishing surface 4, on described burnishing surface 4, with described metal valve body 1 fits tightly differential flow transducer 2 is installed, in described metal valve body 1, with the position of described differential flow transducer 2 symmetries, metal heater 3 is installed, be used for heating described metal valve body 1 and differential flow transducer 2, keep differential flow transducer 2 and metal valve body 1 by heating, the equality of temperature of sampling conduit reaches the object of avoiding having in differential flow transducer 2 condensation of moisture, because the temperature of metal heater 3 is controlled, on it, there is temperature measuring equipment, therefore without separately the temperature of differential flow transducer 2 being measured again.
Make differential flow transducer 2 cannot be with metal valve body 1 close contact time when being subject to the restriction of installing space, adopt a metal heater 3 being arranged in metal valve body 1 cannot realize when heating of metal valve body 1 is with differential flow transducer 2 simultaneously, can arrange again separately that a metal heater 3 heats differential flow transducer 2 and for connecting the sampling conduit of differential flow transducer 2 and metal valve body 1, the temperature of two metal heaters 3 is adjusted to identical, make not have temperature difference between metal valve body 1 and differential flow transducer 2 and sampling conduit, can solve so too the problem that has condensation of moisture in differential flow transducer 2.
A kind of respirator, it includes metal valve body 1, differential flow transducer 2 is installed in described metal valve body 1 and carries out flow detection, described differential flow transducer 1 is arranged in a burnishing surface 4 in described metal valve body 1, described differential flow transducer 2 is connected with described metal valve body 1 by sampling tube, in metal valve body 1 with described differential flow transducer 2 symmetries be provided with metal heater 3, described metal heater 3 is for heat described metal valve body 1 and described differential flow transducer 2 simultaneously, make described metal valve body 1 and described differential flow transducer 2, sampling conduit keeps identical temperature, avoid steam to condense in differential flow transducer 2, affect the precision of differential flow transducer 2.
What need statement is; above-mentioned detailed description of the invention is only preferred embodiment of the present invention and institute's application technology principle; in technical scope disclosed in this invention, the variation that any those skilled in the art of being familiar with easily expect or replacement, all should be encompassed in protection scope of the present invention.
Claims (10)
1. a differential flow transducer accumulated water treatment device, it is characterized in that, comprise metal valve body, for measuring the differential flow transducer of gas flow in metal valve body, and for heating the heater of described metal valve body and described differential flow transducer.
2. differential flow transducer accumulated water treatment device according to claim 1, is characterized in that, described metal valve body and described differential flow transducer adopt same heater to heat simultaneously.
3. differential flow transducer accumulated water treatment device according to claim 2, it is characterized in that, described heater is metal heater, and described metal heater is fixedly connected on and in described metal valve body, heats described metal valve body and described differential flow transducer simultaneously.
4. differential flow transducer accumulated water treatment device according to claim 1, is characterized in that, described metal valve body and described differential flow transducer arrange respectively heater, heat separately separately.
5. differential flow transducer accumulated water treatment device according to claim 4, it is characterized in that, described heater is metal heater, and described metal heater is two and is fixedly connected with respectively and heats described metal valve body and described differential flow transducer.
6. differential flow transducer accumulated water treatment device according to claim 2, is characterized in that, in described metal valve body main body, is provided with a burnishing surface, and described differential flow transducer fits tightly on described burnishing surface.
7. differential flow transducer accumulated water treatment device according to claim 6, is characterized in that, what described heater and described differential flow transducer were symmetrical is arranged in described metal valve body both sides.
8. differential flow transducer accumulated water treatment device according to claim 1, is characterized in that, whole described metal valve body is bulk metal parts, is provided with air inlet, gas outlet and sampling conduit in described metal valve body.
9. differential flow transducer accumulated water treatment device according to claim 8, is characterized in that, described sampling conduit is directly boring formation in metal valve body.
10. a respirator, is characterized in that, described respirator adopts differential flow transducer to carry out flow detection, and described differential flow transducer has the differential flow transducer accumulated water treatment device described in any one in claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575909.0A CN103893863A (en) | 2012-12-26 | 2012-12-26 | Differential pressure type flow sensor accumulated water processing device and breathing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575909.0A CN103893863A (en) | 2012-12-26 | 2012-12-26 | Differential pressure type flow sensor accumulated water processing device and breathing machine with same |
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| Publication Number | Publication Date |
|---|---|
| CN103893863A true CN103893863A (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210575909.0A Pending CN103893863A (en) | 2012-12-26 | 2012-12-26 | Differential pressure type flow sensor accumulated water processing device and breathing machine with same |
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| CN (1) | CN103893863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104784792A (en) * | 2015-04-03 | 2015-07-22 | 深圳市科曼医疗设备有限公司 | Breathing machine and moisture removing air path system thereof |
| CN107580515A (en) * | 2015-05-08 | 2018-01-12 | 皇家飞利浦有限公司 | Liquid removal in patient interface component |
| CN109821120A (en) * | 2019-02-25 | 2019-05-31 | 深圳融昕医疗科技有限公司 | Blowing method, system and the ventilator with the system |
Citations (6)
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|---|---|---|---|---|
| US4015473A (en) * | 1974-11-06 | 1977-04-05 | U.S. Philips Corporation | Mass flowmeter for a gaseous medium, for example air |
| US4727871A (en) * | 1985-10-28 | 1988-03-01 | Infrasonics, Inc. | Ventilator exhalation system |
| CN101311683A (en) * | 2007-12-29 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Breathing machine and its low differential pressure type flow quantity detection mechanism |
| CN102210899A (en) * | 2010-04-10 | 2011-10-12 | 德尔格医疗有限责任公司 | Respirator |
| CN102269604A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Gas flowmeter and throttling device used therein, breathing machine and anaesthesia machine |
| CN102279027A (en) * | 2010-03-22 | 2011-12-14 | 霍尼韦尔国际公司 | Sensor assembly with hydrophobic filter |
-
2012
- 2012-12-26 CN CN201210575909.0A patent/CN103893863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015473A (en) * | 1974-11-06 | 1977-04-05 | U.S. Philips Corporation | Mass flowmeter for a gaseous medium, for example air |
| US4727871A (en) * | 1985-10-28 | 1988-03-01 | Infrasonics, Inc. | Ventilator exhalation system |
| CN101311683A (en) * | 2007-12-29 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Breathing machine and its low differential pressure type flow quantity detection mechanism |
| CN102279027A (en) * | 2010-03-22 | 2011-12-14 | 霍尼韦尔国际公司 | Sensor assembly with hydrophobic filter |
| CN102210899A (en) * | 2010-04-10 | 2011-10-12 | 德尔格医疗有限责任公司 | Respirator |
| CN102269604A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Gas flowmeter and throttling device used therein, breathing machine and anaesthesia machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104784792A (en) * | 2015-04-03 | 2015-07-22 | 深圳市科曼医疗设备有限公司 | Breathing machine and moisture removing air path system thereof |
| WO2016155392A1 (en) * | 2015-04-03 | 2016-10-06 | 深圳市科曼医疗设备有限公司 | Ventilator and moisture-removing air circuit system thereof |
| CN107580515A (en) * | 2015-05-08 | 2018-01-12 | 皇家飞利浦有限公司 | Liquid removal in patient interface component |
| CN107580515B (en) * | 2015-05-08 | 2022-03-11 | 皇家飞利浦有限公司 | Liquid removal in a patient interface assembly |
| CN109821120A (en) * | 2019-02-25 | 2019-05-31 | 深圳融昕医疗科技有限公司 | Blowing method, system and the ventilator with the system |
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Application publication date: 20140702 |