CN105842394A

CN105842394A - Gas detection device

Info

Publication number: CN105842394A
Application number: CN201510022136.7A
Authority: CN
Inventors: 吴忠儒; 林圣杰; 曾耀霆; 孙彬钟; 黄健隆
Original assignee: High Tech Computer Corp
Current assignee: HTC Corp
Priority date: 2015-01-16
Filing date: 2015-01-16
Publication date: 2016-08-10
Anticipated expiration: 2035-01-16
Also published as: CN105842394B

Abstract

The invention discloses a gas detection device, which comprises a shell, a flow-disturbing element, a non-return film and a detector. The shell comprises a cavity and an exhaust vent. The flow-disturbing element is used for making to-be-detected gas enter the cavity in a vortex way. The non-return film is connected to the flow-disturbing element and is used for letting the to-be-detected gas flow into the cavity unidirectionally. The detector is arranged in the cavity and is located between the exhaust vent and the non-return film to detect the characteristics of the to-be-detected gas. And the exhaust vent is used for discharging the to-be-detected gas.

Description

Gas sensing device

Technical field

The present invention relates to a kind of gas sensing device, and particularly relate to detect a kind of gas of gas characteristic Body detector.

Background technology

Traditional gas sensing device includes a blowpipe and a flow rate detector.User is sent into facing to blowpipe One gas, this gas detects gas flow by flow rate detector.But, traditional gas detector is only Energy measurement of discharge, makes the range of application of gas detecting machine be restricted.

Therefore, how the range of application of enlargement gas detector is the target that the art dealer makes great efforts One of.

Summary of the invention

It is an object of the invention to provide a kind of gas sensing device, the characteristic of gas to be measured can be detected.

For reaching above-mentioned purpose, according to one embodiment of the invention, a kind of gas sensing device is proposed.Gas Detector includes a housing, a turbulent element, a non-return thin film and a detector.Housing includes Chamber and a steam vent.Turbulent element is in order to enter cavity with allowing a gas vortex to be measured.Non-return thin film connects In turbulent element and in order to flow into cavity with allowing gas unidirectional to be measured.Detector is located in cavity and is positioned at row Between pore and non-return thin film, in order to detect the characteristic of gas to be measured.Wherein, steam vent is to be measured in order to allow Gas is discharged.

More preferably understand in order to the above-mentioned and other aspect of the present invention is had, preferred embodiment cited below particularly, And the accompanying drawing appended by coordinating, it is described in detail below:

Accompanying drawing explanation

Figure 1A is the sectional view of the gas sensing device of one embodiment of the invention；

Figure 1B is the top view of the gas sensing device of Figure 1A；

Fig. 2 is the schematic diagram that gas to be measured enters the gas sensing device of Figure 1A；

Fig. 3 is the schematic diagram of the detector detecting gas to be measured of Fig. 2；

Fig. 4 A is the schematic diagram that the gas to be measured of Fig. 3 is forcefully discharged；

Fig. 4 B is the top view of the filter element of Fig. 4 A；

Fig. 5 is the sectional view of the gas sensing device of another embodiment of the present invention；

Fig. 6 is the outside drawing of the gas sensing device of another embodiment of the present invention.

Symbol description

100,200,300: gas sensing device

110,221: housing

110a: cavity

110b, 221a: recess

110c: steam vent

111: shell

112: inner shell

1121: stop wall

120: blowpipe

130: turbulent element

131: newel

132: turbulence blades

141: edge

142: center

140: non-return thin film

150: detector

151: circuit board

151a: perforation

152: gas characteristic detecing element

155: filter element

155a: through hole

160: forced exhaust element

170: electric wire

180: battery

190: radio receiving transmitting module

220: air inlet module

C1: air flue

D1: external diameter

L1: length

G1: gas to be measured

P1, P2: air pressure

T1: thickness

Detailed description of the invention

Refer to Figure 1A and Figure 1B, Figure 1A and illustrate the gas sensing device according to one embodiment of the invention Sectional view, and Figure 1B illustrates the top view of gas sensing device of Figure 1A.Gas sensing device 100 It is the gas sensing device of a miniaturization, there is carrying convenience.In one embodiment, gas sensing device The outer diameter D 1 of 100 can be between about 50 millimeters to about 80 millimeters, and length L1 can be between about 90 Millimeter, between about 120 millimeters, may conform to the demand of miniaturization.

Gas sensing device 100 can be used to detect the alcohol concentration of a gas characteristic, e.g. human exhaled breath Or gas composition etc..Gas sensing device 100 include housing 110, blowpipe 120, turbulent element 130, Non-return thin film 140, detector 150, filter element 155, forced exhaust element 160, electric wire 170, Battery 180 and radio receiving transmitting module 190.

Housing 110 includes shell 111 and inner shell 112, and wherein inner shell 112 is connected to shell 111 and position In shell 111.Shell 111 has cavity 110a and steam vent 110c, and inner shell 112 has recessed Portion 110b.Cavity 110a, recess 110b communicate with steam vent 110c.Additionally, the material of housing 110 E.g. plastic cement, metal or rubber etc..

Blowpipe 120 is alternatively installed on the recess 110b of inner shell 112.In one embodiment, blowpipe 120 External diameter slightly larger than the internal diameter of recess 110b；So, after force a little, just can by blowpipe 120 certainly Recess 110b separates or is installed on recess 110b.Owing to blowpipe 120 has replaceability, make blowpipe 120 Become the blowpipe of a jettisonable；Say further, at blowpipe 120 after recess 110b separates, can Abandon blowpipe 12.As long as installing a new blowpipe 120 again in recess 110b when the gas sensing of next time, Gas sensing can be carried out.

User can be blown into a gas G1 (Fig. 2) to be measured facing to blowpipe 120 and enter in cavity 110a, with Detect the characteristic of gas G1 to be measured.In the present embodiment, the cavity 110a of shell 111 and inner shell 112 Recess 110b can directly communicate, and can shorten gas G1 to be measured from blowpipe 120 to the flowing of cavity 110a Distance, it is possible to omit the entity pipeline between blowpipe 120 and cavity 110a.

As illustrated in figures ia and ib, turbulent element 130 is positioned at recess 110b.Turbulent element 130 Including newel 131 and several turbulence blades 132, each turbulence blades 132 extends to from newel 131 The medial wall of recess 110b.In the present embodiment, the quantity of turbulence blades 132 is 8, but also may be used More or less than 8.In the present embodiment, housing 110 and turbulent element 130 can be integrally formed knots Structure, such as, housing 110 and turbulent element 130 can use plastic cement injection processing technology to shape；Another is real Execute in example, after housing 110 and turbulent element 130 can complete respectively, then by binding, engaging, Seam, screw togather, the temporary or permanent bond such as riveted.The material of turbulent element 130 e.g. plastic cement, Metal or rubber etc..When housing 110 and turbulent element 130 are one of the forming structure, turbulent element 130 Material can be identical with housing 110；When housing 110 is respectively prepared with turbulent element 130, flow-disturbing unit The material of part 130 can be different with housing 110.

As shown in Figure 1A, owing to being not yet blown into gas G1 to be measured, the therefore air pressure P1 in blowpipe 120 It is approximately equal to the air pressure P2 of cavity 110a.

Refer to Fig. 2, it illustrates the schematic diagram that gas to be measured enters the gas sensing device of Figure 1A.When When detecting gas G1 to be measured, user can be blown into a gas G1 to be measured facing to blowpipe 120, now blows Air pressure P1 in pipe 120, more than the air pressure P2 of cavity 110a, makes non-return thin film 140 by one toward cavity The thrust in 110a direction, forces and exposes an air flue C1 between non-return thin film 140 and inner shell 112, and then Gas G1 to be measured is made to be entered in cavity 110a by air flue C1.

Newel 131 is fixed at the center 142 of non-return thin film 140, and the edge 141 of non-return thin film 140 Center 142 movable (such as free end) relatively.Due to turbulence blades 132 in the shape of a spiral, gas to be measured is made G1 can produce vortex motion after turbulence blades 132 and flow toward deep direction, and makes Gas G1 to be measured promotes the edge 141 of non-return thin film 140；Edge 141 due to non-return thin film 140 And form a long arm of force between center 142, make gas G1 to be measured promote non-return thin film 140 effortlessly, Easily make to expose air flue C1 between edge 141 and the inner shell 112 of non-return thin film 140.In one embodiment, The non-return airtight thin film of thin film 140 (not having pore), therefore can avoid gas G1 to be measured by non-return thin The material of film 140 itself leaks to cavity 110a.Consequently, it is possible to gas G1 to be measured also can be with bigger Strength (if leaking, motive force declines) promotes the edge 141 of non-return thin film 140 to expose air flue C1。

Further, since gas G1 vortex to be measured ground enters cavity 110a, therefore can be full of whole equably Cavity 110a, i.e. gas G1 to be measured can arrive detector 150 rapidly, with by detector 150 Detecting or analysis.In one embodiment, non-return thin film 140 is a transparent membrane, but the most semi-transparent Bright or non-transparent film.In one embodiment, the thickness t1 of non-return thin film 140 can be between 45 microns to 55 Between Wei meter, but also it is smaller than 45 microns or more than 55 microns.Additionally, the shape of non-return thin film 140 Shape is the most circular, but alternatively rectangle or ellipse.

In one embodiment, the material of non-return thin film 140 is e.g. in polyethylene (Polyethylene), polychlorostyrene Fluorothene (Polytetrafluoroethylene), dacron (Polyester) or a combination thereof.Additionally, it is non-return Thin film 140 can be single layer structure or multiple structure.For multiple structure, non-return thin film 140 each The material of layer can be one of which or the combination of above-mentioned material kind.

In detector 150 is located at cavity 110a and between steam vent 110c and non-return thin film 140, In order to detect the characteristic of gas G1 to be measured.Detector 150 includes that circuit board 151 and at least one gas are special Property detecing element 152.Circuit board 151 has at least one perforation 151a.Gas characteristic detecing element 152 It is located on circuit board 151 and towards cavity 110a, to detect or to analyze the characteristic of gas G1 to be measured.This Outward, in another embodiment, detector 150 can also be effusion meter.

In the present embodiment, electric wire 170 circuit connectable plate 151 and battery 180, make battery 180 power To circuit board 151, and the configuration of battery 180 refer to Fig. 6.Radio receiving transmitting module 190 can be wireless Mechanics of communication transmits the analysis result of gas G1 to be measured to outside receptor (not illustrating), receptor example Computer, mobile phone or servomechanism in this way.In another embodiment, although figure does not illustrates, but gas sensing dress Putting 100 and can also include a transmission line, wherein transmission line connects circuit board 151 and external receiver, makes to treat The analysis result surveying gas G1 sends external receiver to by transmission line.

Refer to Fig. 3, its detector illustrating Fig. 2 detects the schematic diagram of gas to be measured.As it is shown on figure 3, When stopping being blown into gas G1 to be measured in cavity 110a, owing to cavity 110a is full of gas G1 to be measured, Therefore the air pressure P2 in cavity 110a is more than the air pressure P1 in blowpipe 120, makes the limit of non-return thin film 140 Edge 141 promotes toward blowpipe 120 direction and closes air flue C1 (being illustrated in Fig. 2), and then avoids cavity 110a Interior gas G1 to be measured is back to blowpipe 120.Saying further, gas G1 to be measured can only uniaxially lead to Cross non-return thin film 140 and enter cavity 110a, and blowpipe 120 cannot be reversely flowd back towards by non-return thin film 140.

In one embodiment, non-return thin film 140 is airtight thin film, and the most non-return thin film 140 does not have pore. Therefore, after the air flue C1 of Fig. 2 closes, the gas G1 to be measured in cavity 110a can be avoided by only The material adverse current of inverse thin film 140 itself is to blowpipe 120.Additionally, inner shell 112 includes the stop wall of annular 1121, the edge 141 of non-return thin film 140 is optionally subjected to the backstop of stop wall 1121.Such as Fig. 3 Shown in, owing to the air pressure P2 in cavity 110a is more than the air pressure P1 in blowpipe 120, the most non-return thin film 140 by the pressure acted on toward blowpipe 120 direction, and can more closely fit in stop wall 1121 On；So, the gas G1 to be measured in cavity 110a is more difficult to from non-return thin film 140 and stop wall 1121 Between be back to blowpipe 120.

Refer to Fig. 4 A and Fig. 4 B, Fig. 4 A illustrates the schematic diagram that the gas to be measured of Fig. 3 is forcefully discharged, And Fig. 4 B illustrates the top view of filter element of Fig. 4 A.After detecting completes, forced exhaust element 160 Can the gas G1 to be measured of cavity 110a be forced outside gas bleeding detector 100, it is to avoid blow next time The body G1 of entering to be measured entered by cavity 110a internal residual to be measured enter body G1 affected, so can carry It is raised to the accuracy of analysis of gas G1 the most to be measured.When forced exhaust element 160 operates, cavity Air pressure P2 in 110a, more than the air pressure P3 outside cavity 110a, makes the gas to be measured in cavity 110a G1 can be sucked out outside cavity 110a.Additionally, as shown in Figure 4 A, forced exhaust element 160 is being strengthened Exhaust capacity under, e.g. improve forced exhaust element 160 rotating speed, the gas in blowpipe 120 can be made Pressure P1 is more than the air pressure P3 outside cavity 110a, and then makes edge 141 and the inner shell of non-return thin film 140 Air flue C1 is exposed between 112；Consequently, it is possible to the residual gas to be measured G1 in turbulent element 130 also may be used Be forcefully discharged outside cavity 110a, it is to avoid be blown into next time to be measured enter body G1 by turbulent element 130 The negative effect of interior residual gas G1 to be measured, so can rise to dividing of gas G1 the most to be measured Analysis accuracy.As to whether depending on exposing the visual actual state of air flue C1 of Fig. 4 A, the present invention implements Example is not any limitation as.It is to say, in another embodiment, if without wanting, the air flue shown in Fig. 4 A C1 also can not expose.

As shown in Figure 4 A, owing to circuit board 151 has perforation 151a, make when forced exhaust element 160 During running, the gas G1 to be measured in cavity 110a can discharge gas by perforation 151a and steam vent 110c Outside body detector 100.In one embodiment, forced exhaust element 160 e.g. scavenger fan.Although Figure does not illustrates, but electric wire 170 also can connect forced exhaust element 160 and battery 180, makes battery 180 Forced exhaust element 160 can be supplied electrical power to, to operate forced exhaust element 160.

As shown in Figure 4 B, filter element 155 has at least one through hole 155a, makes when forced exhaust element During 160 running, the gas G1 in cavity 110a can pass through the perforation 151a of housing 110, steam vent 110c And the through hole 155a of filter element 155 discharges outside gas sensing device 100.The internal diameter of through hole 155a is little Internal diameter in steam vent 110c.Due to the setting of filter element 155, can stop that introduced contaminants passes through row Pore 110c enters in cavity 110a.

Although the interchangeable element of the gas sensing device 100 of above-described embodiment is said as a example by blowpipe 120 Bright, but the embodiment of the present invention is not limited.

Fig. 5 illustrates the sectional view of the gas sensing device according to another embodiment of the present invention.Gas sensing fills Put 200 and include housing 110, air inlet module 220, detector 150, filter element 155, forced exhaust Element 160, electric wire 170, battery 180 and radio receiving transmitting module 190.Housing 110 includes shell 111 And inner shell 112, wherein inner shell 112 is connected to shell 111 and is positioned at shell 111.Inner shell 112 has Recess 110b, air inlet module 220 is had alternatively to be installed on the recess 110b of inner shell 112.Compared to Gas sensing device 100, the interchangeable element of the gas sensing device 200 of the present embodiment is whole group and enters Gas module 220.

Air inlet module 220 includes housing 221, blowpipe 120, turbulent element 130 and non-return thin film 140. Housing 221 has recess 221a, and turbulent element 130 is fixed in recess 221a.Specifically, disturb Fluid element 130 includes newel 131 and several turbulence blades 132, and each turbulence blades 132 is from newel 131 medial walls extending to recess 221a.In the present embodiment, blowpipe 120 is alternatively installed on recess 221a, but also can be integrally formed with the housing 221 of air inlet module 220；Such as, blowpipe 120 with enter The housing 221 of gas module 220 can use plastic cement injection processing technology integrally formed.

In one embodiment, the external diameter of the housing 221 of air inlet module 220 is slightly larger than the recess of inner shell 112 The internal diameter of 110b；So, after force a little, just can be by whole group of air inlet module 220 from recess 110b Separate or be installed on recess 110b.Owing to air inlet module 220 has replaceability, make air inlet module 220 Become the air inlet module of a jettisonable；Say further, divide from recess 110b at air inlet module 220 From rear, air inlet module 220 can be abandoned.As long as installing a new air inlet mould again when the gas sensing of next time Block 220, in recess 110b, can carry out gas sensing.

Fig. 6 illustrates the outside drawing of the gas sensing device according to another embodiment of the present invention.Gas sensing fills Put 300 and include housing 110, air inlet module 120, turbulent element 130 (not illustrating), non-return thin film 140 (not Illustrate), detector 150 (not illustrating), filter element 155 (not illustrating), forced exhaust element 160 (do not paint Show), electric wire 170, battery 180 and radio receiving transmitting module 190 (not illustrating).As it can be seen, battery 180 Can be located at outside housing 110, and be connected to detector 150 (not illustrating) with electric wire 170, to supply electricity to detect Survey device 150.In another embodiment, battery 180 also can be located in housing 110.

Additionally, the battery 180 of above-mentioned gas detector 100 and 200 and the configuration mode of electric wire 170 Battery 180 and the configuration mode of electric wire 170 of the gas sensing device 300 of the embodiment of the present invention can be similar to, Hold this to repeat no more.

In sum, the gas sensing device of the embodiment of the present invention has following effect:

(1). in an embodiment, gas sensing device is the gas sensing device of a miniaturization, has and carries Convenience.

(2). in an embodiment, gas sensing device includes a blowpipe alternatively.So, can increase Change the convenience of blowpipe.

(3). in an embodiment, gas sensing device includes turbulent element.Turbulent element can allow air blowing produce Vortex moves, and makes air blowing touch monitoring device rapidly, reduces gas sensing required time.

(4). in an embodiment, gas sensing device includes forced exhaust element.Forced exhaust element can be by Air blowing in housing is discharged outside housing rapidly, and can be by the air blowing major part in housing or almost all row Go out outside housing, in order to the gas sensing of next time.

(5). in an embodiment, gas sensing device includes non-return thin film.Non-return thin film is connected to flow-disturbing unit Part, flows into cavity with can allowing gas unidirectional to be measured.

(6). in an embodiment, turbulent element and non-return thin film can be integrated in air inlet module, make turbulent element And non-return thin film can replace with air inlet module.So, can avoid residuing in turbulent element and non-return thin The air blowing detecting that the gases affect of film is next.

In sum, although combine preferred embodiment above and disclose the present invention, however itself and be not used to limit Determine the present invention.Persond having ordinary knowledge in the technical field of the present invention, in the spirit without departing from the present invention With in scope, can be used for a variety of modifications and variations.Therefore, protection scope of the present invention should be to enclose What claim was defined is as the criterion.

Claims

1. a gas sensing device, including:

Housing, including cavity and steam vent；

Turbulent element, in order to allow a gas to be measured evenly into this cavity；

Non-return thin film, is connected to this turbulent element and in order to flow into this cavity with allowing this gas unidirectional to be measured； And

Detector, in being located at this cavity and between this steam vent and this non-return thin film, in order to detect this The characteristic of gas to be measured；

Wherein, this steam vent is in order to allow this gas to be measured discharge.

2. gas sensing device as claimed in claim 1, wherein this detector includes:

Circuit board, has at least one perforation, and this at least one perforation passes through in order to allow this gas to be measured；And

Gas characteristic detecing element, is located at this circuit board and in order to detect the characteristic of this gas to be measured.

3. gas sensing device as claimed in claim 1, also includes:

Forced exhaust element, is located at outside this cavity, in order to force to discharge by gas to be measured for this in this cavity Outside this cavity.

4. gas sensing device as claimed in claim 1, wherein this housing has a recess, this gas Detector also includes:

Blowpipe, is alternatively installed on this recess.

5. gas sensing device as claimed in claim 4, wherein this turbulent element includes newel and many Individual turbulence blades, respectively this turbulence blades extends to a medial wall of this housing from this newel.

6. gas sensing device as claimed in claim 5, wherein this housing includes stop wall, and this is non-return This newel is fixed at the center of thin film, and the skirt selectivity of this non-return thin film ground is by this stop wall Backstop.

7. gas sensing device as claimed in claim 1, wherein this housing is integrated with this turbulent element Shape.

8. gas sensing device as claimed in claim 1, wherein this gas sensing device has an external diameter And a length, this external diameter is between 50 millimeters to 80 millimeters, and this length is between 90 millimeters to 120 Between Hao meter.

9. gas sensing device as claimed in claim 1, wherein the thickness of this non-return thin film is between 45 Micron is between 55 microns.

10. gas sensing device as claimed in claim 1, wherein the material of this non-return thin film includes gathering Ethylene (Polyethylene), polychlorostyrene fluorothene (Polytetrafluoroethylene), dacron (Polyester) Or a combination thereof.