CN203314964U - Expiratory flow detector - Google Patents
Expiratory flow detector Download PDFInfo
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- CN203314964U CN203314964U CN201320313896XU CN201320313896U CN203314964U CN 203314964 U CN203314964 U CN 203314964U CN 201320313896X U CN201320313896X U CN 201320313896XU CN 201320313896 U CN201320313896 U CN 201320313896U CN 203314964 U CN203314964 U CN 203314964U
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Abstract
The utility model discloses an expiratory flow detector which comprises an expiratory valve spool, a laminar flow device and a flow sensor. A valve cavity is formed in the expiratory valve spool, an air lock used for partitioning the valve cavity into a first secondary valve cavity and a second secondary valve cavity is arranged in the valve cavity, a first passage and a second passage are formed in the expiratory valve spool, one end of the first passage is communicated with the first secondary valve cavity, and one end of the second passage is communicated with the second secondary valve cavity. The laminar flow device is arranged in the first passage and/or the second passage. The flow sensor is arranged outside the expiratory valve spool and connected with the other ends of the first passage and the second passage. The expiratory flow detector has the advantages that by arrangement of the laminar device, gas eddies in corresponding gas passages are decreased and even eliminated, flow detection accuracy is improved, and practicality is good.
Description
Technical field
This utility model relates to medical instruments field, in particular to a kind of expiratory gas flow detector.
Background technology
The method that the expiratory gas flow of the sampling of bypass at present detects is used widely.But each patient's expiration state difference is very large in actual use, often occur in expiration that eddy current etc. affects the factor of flow detection, affects the accuracy of flow detection greatly.And certain humidity is arranged in patient's expiration, steam will condense into water after temperature reduces, if water enters flow transducer, will cause the inaccurate even sensor failure of sensor measurement, poor practicability.
The utility model content
This utility model is intended at least solve one of technical problem existed in prior art.For this reason, a purpose of the present utility model is to propose a kind of expiratory gas flow detector, and this expiratory gas flow detector detection stability and accuracy are better.
According to expiratory gas flow detector of the present utility model, comprise: the expiration spool, the outlet valve in-core has valve pocket, in valve pocket, be provided with for valve pocket being isolated into to the vapour lock of the first sub-valve pocket and the second sub-valve pocket, be formed with first passage and second channel on the expiration spool, one end of first passage is communicated with the first sub-valve pocket, and an end of second channel is communicated with the second sub-valve pocket; Laminar flow apparatus, laminar flow apparatus is located at respectively in first passage and/or second channel; And flow transducer, flow transducer is located at outside the expiration spool, and flow transducer is connected with the other end of first passage and the other end of second channel respectively.
According to the expiratory gas flow detector of this utility model embodiment, by laminar flow apparatus is set, can reduce the air whirl phenomenon of even eliminating in corresponding gas passage, improved the accuracy of flow detection, practicality is good.
In addition, also there is following additional technical feature according to expiratory gas flow detector of the present utility model:
The expiratory gas flow detector also comprises: the air-flow transfer block, the air-flow transfer block is connected with the expiration spool, be formed with third channel and four-way in the air-flow transfer block, an end of third channel is communicated with the other end of first passage, and an end of four-way is connected with the other end of second channel; The sensor transfer block, the sensor transfer block is located on the air-flow transfer block, be formed with Five-channel and clematis stem road in the sensor transfer block, one end of Five-channel is connected with the other end of third channel, the other end of Five-channel is connected with flow transducer, one end in clematis stem road is connected with the other end of four-way, and the other end in clematis stem road is connected with flow transducer.
Air-flow transfer block and sensor transfer block are metalwork.
The expiratory gas flow detector also comprises: heater, heater is fixed to the air-flow transfer block for the heating air flow transfer block, so that the temperature of air-flow transfer block is in the preset temperature interval.
The preset temperature interval is 33 ℃-37 ℃.
The expiratory gas flow detector also comprises: temperature sensor, temperature sensor is located on the air-flow transfer block temperature for detection of the air-flow transfer block.
The air-flow transfer block is set in the outside of expiration spool.
Heater is located at the bottom of air-flow transfer block.
Flow transducer is located between the top of air-flow transfer block and flow transducer and air-flow transfer block and is provided with thermal conductive material layer.
Thermal conductive material layer is the heat-conducting silicone grease layer.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic diagram according to the expiratory gas flow detector of an embodiment of this utility model.
Reference list:
100, expiratory gas flow detector
1, expiration spool; 11, valve pocket; 111, the first sub-valve pocket; 112, the second sub-valve pocket; 12, vapour lock; 13, first passage; 14, second channel;
2, laminar flow apparatus;
3, flow transducer
4, air-flow transfer block; 43, third channel; 44, four-way;
5, sensor transfer block; 55, Five-channel; 56, clematis stem road;
6, heater;
7, temperature sensor;
The specific embodiment
Below describe embodiment of the present utility model in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining this utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only this utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in this utility model.
Below with reference to Fig. 1, the expiratory gas flow detector 100 according to this utility model embodiment is described.
According to the expiratory gas flow detector 100 of this utility model embodiment, comprise expiration spool 1, laminar flow apparatus 2 and flow transducer 3.
Wherein exhale in spool 1 and there is valve pocket 11, valve pocket 11 has valve pocket import (for example right openings of expiration spool 1 in Fig. 1) and valve pocket outlet (for example left side opening of expiration spool 1 in Fig. 1), and the gas that patient breathes out enters valve pocket 11 and flows out valve pocket 11 from outlet from the valve pocket import.
In valve pocket 11, be provided with for valve pocket 11 being isolated into to the vapour lock 12 of the first sub-valve pocket 111 and the second sub-valve pocket 112.Vapour lock 12 can comprise step shelf, step shelf parallel placement in the horizontal direction and being spaced apart from each other.
As shown in Figure 1, vapour lock 12 left sides form the second sub-valve pocket 112, and vapour lock 12 the right form the first sub-valve pocket 111.The first sub-valve pocket 111 is positioned at the inlet side of valve pocket 11, and the second sub-valve pocket 112 is positioned at the outlet side of valve pocket 11.Be understandable that, be all prior art about the concrete structure of vapour lock 12 and operation principle etc., and be well known for ordinary skill in the art, therefore no longer describe in detail here.
Be formed with first passage 13 and second channel 14 on expiration spool 1, as shown in Figure 1, an end of first passage 13 is communicated with the first sub-valve pocket 111, and specifically, the lower end of first passage 13 is communicated with the first sub-valve pocket 111.One end of second channel 14 is communicated with the second sub-valve pocket 112, and specifically, the lower end of second channel 14 is communicated with the second sub-valve pocket 112.
Be understandable that, apart from the import of valve pocket 11 than second channel 14 apart from the import of valve pocket 11 more recently, through the effect of vapour lock 12, the gas pressure in first passage 13 is larger than the gas pressure in second channel 14 for first passage 13.
According to an embodiment of the present utility model, laminar flow apparatus 2 can comprise step shelf, and step shelf be arranged in parallel in the horizontal direction and is spaced apart from each other.Laminar flow apparatus 2 can reduce the factor of even eliminating the impact detection flows such as eddy current that exist in gas like this, has improved the accuracy of flow detection.
According to an embodiment of the present utility model, as shown in Figure 1, preferably, laminar flow apparatus 2 can only be located in first passage 13.According to another embodiment of the present utility model, laminar flow apparatus 2 can only be located in second channel 14.According to another embodiment of the present utility model, laminar flow apparatus 2 can be located at respectively in first passage 13 and second channel 14.Laminar flow apparatus 2 is for weakening at least to a certain extent the air whirl phenomenon in respective channel
As shown in Figure 1, flow transducer 3 is located at outside expiration spool 1, and specifically, flow transducer 3 can be located at the top of expiration spool 1.
Be understandable that, flow transducer 3 can directly be connected with the left end of first passage 13, the left end of second channel 14.Certainly, flow transducer 3 also can be connected indirectly with the left end of first passage 13, the left end of second channel 14, and namely flow transducer 3 can for example, be connected with the left end of first passage 13, the left end of second channel 14 indirectly by intermediary (the air-flow transfer block 4 and sensor transfer block 5 that will mention below).
According to the expiratory gas flow detector 100 of this utility model embodiment, by laminar flow apparatus 2 being set, can reducing the air whirl phenomenon of even eliminating in corresponding gas passage, improved the accuracy of flow detection, practicality is good.
According to an embodiment of the present utility model, expiratory gas flow detector 100 also comprises air-flow transfer block 4 and sensor transfer block 5.
Wherein, air-flow transfer block 4 is connected with expiration spool 1, as shown in Figure 1, is formed with third channel 43 and four-way 44 in air-flow transfer block 4.One end of third channel 43 is communicated with the other end of first passage 13, that is to say, the right-hand member of third channel 43 is connected with the left end of first passage 13.One end of four-way 44 is connected with the other end of second channel 14, that is to say, the right-hand member of four-way 44 is connected with the left end of second channel 14.
As shown in Figure 1, sensor transfer block 5 is located on air-flow transfer block 4, and in an embodiment of the present utility model, sensor transfer block 5 is located at air-flow transfer block 4 tops.
With reference to figure 1, in sensor transfer block 5, be formed with Five-channel 55 and clematis stem road 56.One end of Five-channel 55 is connected with the other end of third channel 43, the other end of Five-channel 55 is connected with flow transducer 3, that is to say, the lower end of Five-channel 55 is connected with the upper end of third channel 43, and the upper end of Five-channel 55 is connected with flow transducer 3.
One end in clematis stem road 56 is connected with the other end of four-way 44, and the other end in clematis stem road 56 is connected with flow transducer 3.That is to say, 56De lower end, clematis stem road is connected with the upper end of four-way 44, and 56De upper end, clematis stem road is connected with flow transducer 3.
According to an embodiment of the present utility model, expiratory gas flow detector 100 also comprises heater 6.Heater 6 is fixed to air-flow transfer block 4 for heating air flow transfer block 4, so that the temperature of air-flow transfer block 4 is in the preset temperature interval.As shown in Figure 1, heater 6 can be fixed on the bottom of air-flow transfer block 4.
In embodiment more of the present utility model, air-flow transfer block 4 and sensor transfer block 5 are metalwork.
For example, air-flow transfer block 4 and sensor transfer block 5 preferably by heat conductivity good aluminum make, the heat of conduction heaters 6 so better, air-flow transfer block 4 and sensor transfer block 5 are heated, make air-flow transfer block 4 and sensor transfer block 5 keep suitable temperature, avoid the gas generation condensation phenomenons in air-flow transfer block 4 and sensor transfer block 5 and affect flow transducer 3 normal operations.
And, break-make by control heater 6, can make the temperature of air-flow transfer block 4 in the preset temperature interval, can prevent that like this steam in expiration gas is condensed into water after temperature reduces, thereby can avoid condensed water to enter flow transducer 3, cause flow transducer 3 to lose efficacy, can't measure exactly expiratory gas flow.
Expiratory gas flow detector 100 also comprises temperature sensor 7.As shown in Figure 1, temperature sensor 7 is located on air-flow transfer block 4, for detection of the temperature of air-flow transfer block 4.Specifically, temperature sensor 7 can be located at the middle and lower part of air-flow transfer block 4, can detect better like this temperature of air-flow transfer block 4.
Be understandable that, the temperature range of temperature sensor 7 can be set as 33 ℃-37 ℃, when the temperature of temperature sensor 7 detections is more than or equal to 37 ℃ of temperature, control system (scheming not shown) transmitted signal is given in temperature sensor 7, control system control heater 6 stops heating, and the temperature detected when temperature sensor 7 is during lower than 33 ℃, and control system control heater 6 is heated, gas temperature in expiratory gas flow detector 100 just basically between 33 ℃-37 ℃, can not be condensed into water like this.
Certainly, be understandable that, above-mentioned predetermined temperature can be also 35 ℃, the temperature that detects air-flow transfer blocks 4 when temperature sensor 7 is during higher than 35 ℃ of temperature, control system (scheming not shown) transmitted signal is given in temperature sensor 7, control system control heater 6 stops heating, the temperature that detects air-flow transfer blocks 4 when temperature sensor 7 is during lower than 35 ℃, control system control heater 6 is heated, the temperature of the gas in expiratory gas flow detector 100, just basically in 35 ℃ of left and right, can not be condensed into water like this.
In an embodiment of the present utility model, air-flow transfer block 4 is set in the outside of expiration spool 1.Air-flow transfer block 4 can be connected better with expiration spool 1 like this, prevent gas leakage, air-flow transfer block 4 also can be well to expiration spool 1 transferring heat simultaneously, the temperature of spool 1 of making to exhale also remains in suitable temperature range, thereby avoids the steam generation condensation phenomenon in the expiration gas in first passage 13 and second channel 14.
According to an embodiment of the present utility model, as shown in Figure 1, heater 6 can be located at the bottom of air-flow transfer block 4.Flow transducer 3 can be located at the top of air-flow transfer block 4.
In an embodiment of the present utility model, be provided with thermal conductive material layer between flow transducer 3 and air-flow transfer block 4, heat-conducting silicone grease layer for example, can give flow transducer 3 heating by air-flow transfer block 4 like this, make the temperature of flow transducer 3 in certain temperature range, for example, the temperature of flow transducer 3 is between 33 ℃-37 ℃, the temperature of whole like this expiratory gas flow detector 100 all can be between 33 ℃-37 ℃, condensation vapor Cheng Shui in avoiding exhaling, can prevent flow transducer 3 and lost efficacy or examined indeterminable problem.
Generally speaking, expiratory gas flow detector 100 according to this utility model embodiment, by being set, laminar flow apparatus 2 can reduce well the factor of even eliminating the impact detection flows such as eddy current that exist in gas, improved the accuracy of flow detection, and by heater 6 and temperature sensor 7 heating expiratory gas flow detectors 100 are set, make the temperature of expiratory gas flow detector 100 remain on certain interval, for example, the temperature of expiratory gas flow detector 100 remains between 33 ℃-37 ℃, condensation vapor Cheng Shui in can avoiding well like this exhaling, thereby can prevent flow transducer 3 lost efficacy or examined indeterminable problem, detection stability and the accuracy of expiratory gas flow detector 100 have been improved, practicality is good.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. an expiratory gas flow detector, is characterized in that, comprising:
The expiration spool, described outlet valve in-core has valve pocket, in described valve pocket, be provided with for described valve pocket being isolated into to the vapour lock of the first sub-valve pocket and the second sub-valve pocket, be formed with first passage and second channel on described expiration spool, one end of described first passage is communicated with the described first sub-valve pocket, and an end of described second channel is communicated with the described second sub-valve pocket;
Laminar flow apparatus, described laminar flow apparatus is located at respectively in described first passage and/or described second channel; And
Flow transducer, described flow transducer is located at outside described expiration spool, and described flow transducer is connected with the other end of described first passage and the other end of described second channel respectively.
2. expiratory gas flow detector according to claim 1, is characterized in that, also comprises:
The air-flow transfer block, described air-flow transfer block is connected with described expiration spool, be formed with third channel and four-way in described air-flow transfer block, an end of described third channel is communicated with the other end of described first passage, and an end of described four-way is connected with the other end of described second channel;
The sensor transfer block, described sensor transfer block is located on described air-flow transfer block, be formed with Five-channel and clematis stem road in described sensor transfer block, one end of described Five-channel is connected with the other end of described third channel, the other end of described Five-channel is connected with described flow transducer, one end in described clematis stem road is connected with the other end of described four-way, and the other end in described clematis stem road is connected with described flow transducer.
3. expiratory gas flow detector according to claim 2, is characterized in that, described air-flow transfer block and described sensor transfer block are metalwork.
4. expiratory gas flow detector according to claim 3, is characterized in that, also comprises:
Heater, described heater is fixed to described air-flow transfer block for heating described air-flow transfer block, so that the temperature of described air-flow transfer block is in the preset temperature interval.
5. expiratory gas flow detector according to claim 4, is characterized in that, described preset temperature interval is 33 ℃-37 ℃.
6. expiratory gas flow detector according to claim 4, is characterized in that, also comprises:
Temperature sensor, described temperature sensor is located on described air-flow transfer block the temperature for detection of described air-flow transfer block.
7. expiratory gas flow detector according to claim 2, is characterized in that, described air-flow transfer block is set in the outside of described expiration spool.
8. expiratory gas flow detector according to claim 4, is characterized in that, described heater is located at the bottom of described air-flow transfer block.
9. expiratory gas flow detector according to claim 2, is characterized in that, described flow transducer is located between the top of described air-flow transfer block and described flow transducer and described air-flow transfer block and is provided with thermal conductive material layer.
10. expiratory gas flow detector according to claim 9, is characterized in that, described thermal conductive material layer is the heat-conducting silicone grease layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320313896XU CN203314964U (en) | 2013-05-31 | 2013-05-31 | Expiratory flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320313896XU CN203314964U (en) | 2013-05-31 | 2013-05-31 | Expiratory flow detector |
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| Publication Number | Publication Date |
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| CN203314964U true CN203314964U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320313896XU Withdrawn - After Issue CN203314964U (en) | 2013-05-31 | 2013-05-31 | Expiratory flow detector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207779A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Expiration flow detector |
| CN105116106A (en) * | 2015-07-20 | 2015-12-02 | 合肥众沃仪器技术有限公司 | Smoking machine integrated verification instrument |
| WO2016070394A1 (en) * | 2014-11-07 | 2016-05-12 | 深圳迈瑞生物医疗电子股份有限公司 | Exhaling valve |
| CN108836336A (en) * | 2018-05-08 | 2018-11-20 | 袁辉 | Pathology department's gas collector including elastic pouch |
-
2013
- 2013-05-31 CN CN201320313896XU patent/CN203314964U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207779A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Expiration flow detector |
| WO2016070394A1 (en) * | 2014-11-07 | 2016-05-12 | 深圳迈瑞生物医疗电子股份有限公司 | Exhaling valve |
| CN106922131A (en) * | 2014-11-07 | 2017-07-04 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of outlet valve |
| CN106922131B (en) * | 2014-11-07 | 2019-07-23 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of outlet valve |
| CN105116106A (en) * | 2015-07-20 | 2015-12-02 | 合肥众沃仪器技术有限公司 | Smoking machine integrated verification instrument |
| CN108836336A (en) * | 2018-05-08 | 2018-11-20 | 袁辉 | Pathology department's gas collector including elastic pouch |
| CN108836336B (en) * | 2018-05-08 | 2021-04-27 | 榆林市第二医院 | Pathology department gas collecting device comprising elastic bag body |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131204 Effective date of abandoning: 20190305 |
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| AV01 | Patent right actively abandoned |