CN102266608B - Pressure detection device and breathing machine with same - Google Patents
Pressure detection device and breathing machine with same Download PDFInfo
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- CN102266608B CN102266608B CN201010618325.8A CN201010618325A CN102266608B CN 102266608 B CN102266608 B CN 102266608B CN 201010618325 A CN201010618325 A CN 201010618325A CN 102266608 B CN102266608 B CN 102266608B
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- pressure
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- splicing ear
- detecting device
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Abstract
The invention provides a pressure detection device and a breathing machine with the same. The pressure detection device comprises a valve body, a valve cap, an elastic membrane and a pressure regulation part, wherein the valve body is provided with a first inlet; the valve cap is connected with the valve body, and a valve cavity is formed between the valve body and the valve cap; the elastic membrane is arranged in the valve cavity to divide the valve cavity into a first valve cavity and a second valve cavity; the first valve cavity is communicated with the first inlet; the pressure regulation part is installed in a mounting hole in the valve cap, and extends into one end of the second valve cavity to elastically contact with the elastic membrane; the side of the elastic membrane facing the second valve cavity is provided with a first connecting terminal; the inner wall of the valve cap is provided with a second connecting terminal; and the first connecting terminal has a first state (in contact with the second connecting terminal) or a second state (separate from the second connecting terminal). The pressure detection device provided by the invention has the advantages of small size, simple structure, low manufacturing cost, good exchangeability among parts, favorable air tightness under safe pressure upper limit, and high sensitivity and high operation stability when detecting the airway pressure upper limit, and is economical, convenient and quick for maintenance.
Description
Technical field
The present invention relates to medical instruments field, in particular to a kind of pressure-detecting device and there is the respirator of this checkout gear.
Background technology
In the use procedure of the medical apparatus and instruments such as respirator, anesthetic machine, must carry out mechanical ventilation to patient, for the patient who is receiving treatment, it is very important that the size of ventilation is controlled, particularly infant patient and Cavity in Critical Patients, 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 aspects such as the precision of the medical apparatus and instruments such as respirator, anesthetic machine, safety.
For respirator and anesthetic machine etc., concerning the very strict apparatus of gas flow required precision, need pressure-detecting device to possess higher sensitivity and certain subject range.The existing pressure-detecting device that is applied to respirator relief valve, promotes microswitch by reaction diaphragm, realizes the unlatching of valve body, closing control.But be subject to the restriction of its structural design, be only applicable to the detection of lower pressure.
In currently available technology, be not also specifically designed to pressure-detecting device respirator and that can adapt to high pressure, most pressure-detecting devices are used for the main equipments such as automobile, complicated structure, and sensitivity is not strong.
Summary of the invention
The present invention aims to provide a kind of pressure-detecting device and has the respirator of this checkout gear, to solve the problem that pressure-detecting device complex structure, sensitivity in prior art are not high, cannot adapt to high pressure.
To achieve these goals, according to an aspect of the present invention, provide a kind of pressure-detecting device, having comprised: valve body, has had the first import; Valve gap, is connected with valve body, between valve body and valve gap, forms valve pocket; Flexible sheet, is arranged in valve pocket, and valve pocket is separated into the first valve pocket and the second valve pocket, and wherein, the first valve pocket is communicated with the first import; Pressure regulating part, is arranged in the installing hole on valve gap, and its pressure regulating part stretches into one end and the flexible sheet Elastic Contact of the second valve pocket; Flexible sheet is provided with the first splicing ear towards a side of the second valve pocket, and the inwall of valve gap is provided with the second splicing ear, and the first splicing ear has and the first state of the second splicing ear contact or the second separated state.
Further, the circumferential edge place of flexible sheet is the projective structure towards the second valve pocket projection, and the cross section of projective structure is circular arc.
Further, the first splicing ear is metal backing, and flexible sheet has the annular groove at clamping the first splicing ear edge towards the second valve pocket one side.
Further, flexible sheet has the edge of projective structure, and edge is clamped between valve body and valve gap.
Further, pressure regulating part comprises: adjusting bolt, is spirally connected with installing hole; Spring, is arranged between flexible sheet and adjusting bolt.
Further, the inner side of adjusting bolt has the first projection, has the second projection on the first splicing ear, and the two ends of spring are set in respectively in the first projection and the second projection.
Further, the second splicing ear is becket.
Further, pressure-detecting device of the present invention also comprises: connector, is connected with valve body, and has the second import being communicated with the first import.
Further, the first import is shoulder hole, and connector has the protuberance that stretches into the first import, between the hole shoulder of protuberance and shoulder hole, is provided with hermetically-sealed construction.
According to a further aspect in the invention, provide a kind of respirator, there is above-mentioned pressure-detecting device.
Pressure-detecting device of the present invention, arranges the installation site of pressure regulating part according to predetermined safe pressure value; The first splicing ear is set on flexible sheet, the second splicing ear is set on the inwall of valve gap simultaneously.In air flue, pressure is less than while setting safe pressure, and the first splicing ear on flexible sheet, under the effect of pressure regulating part, does not contact with the second splicing ear, does not form loop, now normal ventilation in air flue; When in air flue, pressure is higher than setting safe pressure, flexible sheet overcomes the effect of pressure regulating part, along the second splicing ear direction, move, the first splicing ear being arranged on flexible sheet moves thereupon, the first splicing ear is contacted with the second splicing ear, form loop, now output electrical signals, controls closed electromagnetic valve; Like this, realized the function of pressure detecting.The detection that pressure-detecting device according to the present invention is simple in structure, highly sensitive, can adapt to high pressure.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structure chart of the embodiment of pressure-detecting device of the present invention; And
Fig. 2 shows in Fig. 1 working state figure when pressure-detecting device reaches safe pressure value.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Referring to Fig. 1, show the structure chart of an embodiment of pressure-detecting device, as can be seen from Figure, the pressure-detecting device of the present embodiment comprises: valve body 3, has the first import 32; Valve gap 7, is connected with valve body 3, between valve body 3 and valve gap 7, forms valve pocket; Flexible sheet 5, is arranged in valve pocket, and valve pocket is separated into the first valve pocket 31 and the second valve pocket 71, and wherein, the first valve pocket 31 is communicated with the first import 32; Pressure regulating part, is arranged in the installing hole 72 on valve gap 7, and pressure regulating part stretches into one end and flexible sheet 5 Elastic Contact of the second valve pocket 71; Flexible sheet 5 is provided with the first splicing ear 4 towards a side of the second valve pocket 71, and the inwall of valve gap 7 is provided with the second splicing ear 6, the first splicing ears 4 to be had and the first state of the second splicing ear 6 contacts or the second separated state.
When the pressure-detecting device of the present embodiment is worked, with connector 1, pressure-detecting device is arranged in controlled air flue, and line is connected with the second splicing ear 6 with the first splicing ear 4 respectively.The installation site of pressure regulating part is set according to predetermined safe pressure value.In air flue, pressure is less than while setting safe pressure, and the first splicing ear 4 on flexible sheet 5, under the effect of pressure regulating part, does not contact with the second splicing ear 6, does not form loop, now normal ventilation in air flue; When in air flue, pressure is higher than setting safe pressure, flexible sheet 5 overcomes the effect of pressure regulating part, along the second splicing ear 6 directions, move, the first splicing ear 4 being arranged on flexible sheet 5 moves thereupon, the first splicing ear 4 is contacted with the second splicing ear 6, form loop, now output electrical signals, controls closed electromagnetic valve; Like this, realized the function of pressure detecting.Meanwhile, on valve gap 7, be also provided with and let out passage 73, when in air flue, pressure is higher than setting pressure, for gushing of the second valve pocket 71 interior gases, in addition, the line of the second splicing ear 6 passage 73 that also needs from then on to lose heart is connected to pressure-detecting device outside.
As shown in Figure 1, in order to improve the intensity of flexible sheet 5, to extend its service life when increasing its induction area, preferably, the circumferential edge place of flexible sheet 5 is the projective structure 51 towards the second valve pocket 71 projections, and the cross section of projective structure 51 is circular arc.Through many experiments, above structure is the most preferred structure of flexible sheet 5.In addition preferably, the 53， edge, edge 53 that flexible sheet 5 has projective structure is clamped between valve body 3 and valve gap 7, edge 53 act as fixedly flexible sheet 5, edge 53 is arranged on the junction of valve body 3 and valve gap 7 simultaneously, also contributes to the sealing of device.
Preferably, the first splicing ear 4 is metal backing, and flexible sheet 5 has the annular groove 54 at clamping the first splicing ear 4 edges towards the second valve pocket 71 1 sides.The induction area of metal backing is large, has improved the sensitivity of pressure detecting.Preferably, the second splicing ear 6 is becket, is copper ring in the present embodiment, stressed even when copper ring can make metal backing be in contact with it, and can effectively improve the stability of sensitivity and the work of this device of pressure detecting.
Preferably, pressure regulating part comprises: adjusting bolt 10, is spirally connected with installing hole 72; Spring 8, is arranged between flexible sheet 5 and adjusting bolt 10.According to predetermined safe pressure value, by turning adjusting bolt 10, come regulating spring 8 to stretch into the degree of depth of the second valve pocket, in air flue, pressure is less than while setting safe pressure, and the first splicing ear 4 and the second splicing ear 6 are in released state; In air flue, pressure is when setting safe pressure, flexible sheet 5 the first valve pocket gas to its applied pressure effect under, overcome the elastic acting force of spring 8, the first splicing ear 4 is contacted with the second splicing ear 6, form loop, now output electrical signals, controls closed electromagnetic valve.Certainly, also can be on valve gap 7 outer walls welded nut 9, adjusting bolt 10 is spirally connected by nut 9 and valve gap 7.Preferably, the inner side of adjusting bolt 10 has on the first projection 101, the first splicing ears 4 and has the second projection 41, and the two ends of spring 8 are set in respectively in first projection the 101 and second projection 41.The effect of first projection the 101 and second projection 41 is retainer spring 8, makes spring 8 can not cause sensitivity to decline because of skew.
Preferably, this device also comprises connector 1, is connected, and has the second import 11 being communicated with the first import 32 with valve body 3.The first import 32 is shoulder hole, and connector 1 has the protuberance 12 that stretches into the first import 32, between the hole shoulder of protuberance 12 and shoulder hole, is provided with hermetically-sealed construction 2.By connector 1 is convenient, pressure-detecting device is connected into controlled air flue, hermetically-sealed construction 2 contributes to the sealing of device simultaneously.
The present invention also provides a kind of respirator, and respirator is a kind of assisted ventilation unit, and it is connected to patient end by suction nozzle and exhaust tube simultaneously.Patient is from respirator suction nozzle draw gas, then by air tube Exhaust Gas.Pressure-detecting device is placed in the air-breathing module of suction nozzle front end to control the safe pressure in air flue.Use respirator of the present invention sensitive to stress reaction in air flue, in system, reach in setting pressure in limited time output electrical signals quickly and accurately, 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.The design principle of this programme can be generalized to carrying out pressure detecting control in the very strict apparatus of gas flow required precision.
It should be noted that, pressure-detecting device according to the present invention be not limited in above-described embodiment to be exemplified out for detection of the pressure in gas passage, in the embodiment not exemplifying out at other, this pressure-detecting device can also be used to detect the pressure in the fluid paths such as oil circuit path, to realize, the pressure detecting in other fluid paths is controlled.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a pressure-detecting device, is characterized in that, comprising:
Valve body (3), has the first import (32);
Valve gap (7), is connected with described valve body (3), between described valve body (3) and described valve gap (7), forms valve pocket;
Flexible sheet (5), is arranged in described valve pocket, and described valve pocket is separated into the first valve pocket (31) and the second valve pocket (71), and wherein, described the first valve pocket (31) is communicated with described the first import (32);
Pressure regulating part, is arranged in the installing hole (72) on described valve gap (7), and described pressure regulating part stretches into one end and described flexible sheet (5) Elastic Contact of described the second valve pocket (71);
Described flexible sheet (5) is provided with the first splicing ear (4) towards a side of described the second valve pocket (71), the inwall of described valve gap (7) is provided with the second splicing ear (6), and described the first splicing ear (4) has and the first state of described the second splicing ear (6) contact or the second separated state;
Wherein, described the first splicing ear (4) is metal backing, and described flexible sheet (5) has the annular groove (54) at clamping described the first splicing ear (4) edge towards described the second valve pocket (71) one sides;
Described the second splicing ear (6) is becket.
2. pressure-detecting device according to claim 1, is characterized in that, the circumferential edge place of described flexible sheet (5) is the projective structure (51) towards described the second valve pocket (71) projection, and the cross section of described projective structure (51) is circular arc.
3. pressure-detecting device according to claim 1, is characterized in that, described flexible sheet (5) has the edge (53) of projective structure, and described edge (53) are clamped between described valve body (3) and described valve gap (7).
4. according to the pressure-detecting device described in any one in claims 1 to 3, it is characterized in that, described pressure regulating part comprises: adjusting bolt (10), is spirally connected with described installing hole (72); Spring (8), is arranged between described flexible sheet (5) and described adjusting bolt (10).
5. pressure-detecting device according to claim 4, it is characterized in that, the inner side of described adjusting bolt (10) has the first projection (101), on described the first splicing ear (4), have the second projection (41), the two ends of described spring (8) are set in respectively in described the first projection (101) and described the second projection (41).
6. pressure-detecting device according to claim 1, is characterized in that, also comprises: connector (1), is connected with described valve body (3), and has the second import (11) being communicated with described the first import (32).
7. pressure-detecting device according to claim 6, it is characterized in that, described the first import (32) is shoulder hole, described connector (1) has the protuberance (12) that stretches into described the first import (32), between the hole shoulder of described protuberance (12) and described shoulder hole, is provided with hermetically-sealed construction (2).
8. a respirator, is characterized in that, has the pressure-detecting device described in any one in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618325.8A CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618325.8A CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266608A CN102266608A (en) | 2011-12-07 |
| CN102266608B true CN102266608B (en) | 2014-02-26 |
Family
ID=45049186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010618325.8A Expired - Fee Related CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102266608B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874084B (en) * | 2014-02-28 | 2019-07-05 | 北京谊安医疗系统股份有限公司 | Outlet valve and ventilator with it |
| CN107747744A (en) * | 2017-10-16 | 2018-03-02 | 中山德厨科技有限公司 | A kind of on-off type pressure test device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074284A (en) * | 1992-01-11 | 1993-07-14 | 马列夫 | A kind of pressure reducing valve |
| CN201139854Y (en) * | 2007-12-14 | 2008-10-29 | 陈美诗 | Breathing machine |
| CN101642597A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Expiratory valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7066175B2 (en) * | 2001-05-07 | 2006-06-27 | Emergent Respiratory Products, Inc. | Portable gas powered positive pressure breathing apparatus and method |
-
2010
- 2010-12-31 CN CN201010618325.8A patent/CN102266608B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074284A (en) * | 1992-01-11 | 1993-07-14 | 马列夫 | A kind of pressure reducing valve |
| CN201139854Y (en) * | 2007-12-14 | 2008-10-29 | 陈美诗 | Breathing machine |
| CN101642597A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Expiratory valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266608A (en) | 2011-12-07 |
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