CN2635017Y

CN2635017Y - Digital display photo controlled electron pneusometer

Info

Publication number: CN2635017Y
Application number: CN 03259299
Authority: CN
Inventors: 高华; 黄国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-04
Filing date: 2003-07-04
Publication date: 2004-08-25
Anticipated expiration: 2013-07-04

Abstract

A digital-indication light-operated electronic vital capacity meter is provided, wherein an airflow metering device comprises an air inlet duct, an airflow guide sleeve, a pneumatic impeller part and an infrared photoelectric switch. The pneumatic impeller part comprises a positioning disc, a stand, a grating wheel, an impeller, a master shaft and a bearing, wherein the grating wheel and the impeller are fixed at the master shaft which stands on the stand by two bearings. A transparent hole is equipped at the grating wheel, located in a notch located at the infrared photoelectric switch, and keeps opposite to a detection point located at the infrared photoelectric switch. A directed air guide channel is equipped at the airflow guide sleeve. The infrared photoelectric switch has no a contact with the grating wheel at the pneumatic impeller part; the airflow blown by the people can directly unilaterally drive the impeller for a rotation measured by the infrared photoelectric switch at a contactless way. An electronic digital-indication device can directly show the measuring data. The utility model is characterized in simple structure, high measuring precision, well stability, small volume, convenient carry, flexible operation and rapid reading.

Description

The light-operated electronics spirometer of digital display

Technical field:

This utility model relates to a kind of spirometer that is used to measure human body vital capacity size, particularly a kind of digital display type electronics spirometer.

Background technology:

The size of vital capacity is the important parameter of an evaluation human body physical condition, and spirometer is the instrumentation that is used to measure the human body vital capacity, and it is widely used in medical treatment, school's health check-up, athletic training monitoring, gerocomia etc.The vital capacity that generally uses is in respect of multiple spirometers such as float-type, mechanical types now.In the patent No. be: disclose a kind of miniature spirometer in the Chinese patent of ZL92226880, this miniature spirometer is by gas blow pipe, the main body pipe is formed, the end that gas blow pipe and tube chamber join is equipped with a grade gas sheet, an end that joins with the main body pipe is equipped with banking stop, mechanical counter and impeller are housed in the main body pipe, when the air-flow of breathing out when gas blow pipe enters in the main body pipe, air-flow promotes wheel rotation, thereby drive mechanical counter and rotate counting, the moving circle of impeller revolution, enumerator just increases a numeral, and according to the reading of enumerator, reuse fluidics principle calculates the gas capacity that the people blows out then.Because what adopt in this scheme is mechanical counter, the inertia of an one side impeller and enumerator is bigger, the dialing of impeller sum counter to need to consume certain energy, thereby, influence measuring accuracy; On the other hand, because impeller whenever turns around, and enumerator could increase a numeral, when impeller changeed half-turn, enumerator was then motionless, thereby influences measuring accuracy in this scheme.The gas capacity that this spirometer can only calculate the people very roughly and blown out, can not accurately and easily obtain vital capacity, per minute maximal voluntary ventilation, first second parameter such as vital capacity, use this spirometer, must be through capacity and the vital capacity that converts or table look-up and just can obtain blow gas, not only inconvenience but also not directly perceived in use, thus limited this spirometric scope of application.

And in the patent No. be: a kind of digital display type electronics spirometer is disclosed in the utility model patent of ZL98205434.3, it comprises flow measurement device, is connected in the differential pressure pickup of this measuring device, and the digital display device that is connected in this differential pressure pickup, owing to adopt Venturi tube and pressure reduction acquisition component thereof, measure by differential pressure pickup, thereby the sensitivity of certainty of measurement, measurement, stability are better than product in the past, but its structure and control system are all very complicated, the cost height, difficult in maintenance, thereby be difficult to be applied.

Comprehensive present employed spirometer is not that the structural principle design is unreasonable, and certainty of measurement is low, and stability is bad, poor practicability; Be exactly that structure, control system are too complicated, the manufacturing cost of product and maintenance cost are all very high, can not apply.

Summary of the invention:

Goal of the invention of the present utility model is to provide a kind of digital display light-operated electronics spirometer.

This utility model is achieved by the following technical solution:

The light-operated electronics spirometer of a kind of digital display, by the gas blow pipe parts, air current measurer and electronic digital display apparatus are formed, the gas blow pipe parts are connected with air inlet pipe air-tightness in the air current measurer, air current measurer is electrically connected with electronic digital display apparatus, described air current measurer comprises air inlet pipe, the air-flow fairlead, the air impeller parts, gas off-take, infrared photoelectric switch, pedestal and end cap, the air impeller parts are installed in the air-flow fairlead, the conjunction of air-flow fairlead and pneumatic ten wheel components is installed in the pedestal, and locate by the positioning disk in the air impeller parts, between the lower axial end face of air-flow fairlead and pedestal, be provided with sealing member, be connected for air-tightness between described end cap and the pedestal; Described air impeller parts are made up of positioning disk, support, grating wheel, impeller, main shaft and bearing, support is fixedlyed connected with positioning disk and is integral, grating wheel and impeller all are fixed on the main shaft, main shaft is bearing on the support by two bearings, be provided with several loopholes on grating wheel equably, each loophole all is positioned on the same circumference; Described infrared photoelectric switch is installed on the positioning disk, and grating wheel is positioned at the notch of infrared photoelectric switch, the sensing point of the residing circumferential alignment infrared photoelectric switch of the loophole on the grating wheel; On the circumference of described air-flow fairlead, be provided with tilting its directional air-guiding groove, on the air-flow fairlead, be provided with the locating slot that is used to install the air impeller parts, the air impeller parts are installed in the air-flow fairlead by described locating slot, and make axial limiting by positioning disk.

As to improvement of the present utility model, but described bearing is the jewel bearing of roll adjustment, it with support between by being threaded, the line of centres of two locating slots is vertical with the centrage of air inlet pipe in the air-flow fairlead, and is angled between the centrage of described its directional air-guiding groove and the RADIAL.

The material of described impeller, grating wheel is a macromolecule organic material, and air inlet pipe and pedestal are integral.

When the people by gas blow pipe when air current measurer is blown, the air-flow fairlead can be realized the orientation input of air-flow, thereby promoting impeller and grating wheel rotates, owing on grating wheel, be provided with several loopholes equably, grating wheel is arranged in the notch of infrared photoelectric switch, infrared photoelectric switch does not contact with grating wheel, impeller and grating wheel are light laminated in addition, the air impeller parts are in rotation process, be subjected to external drag effect hardly, thereby it is minimum to the resistance of air-flow, infrared photoelectric switch can write down the wheel rotation situation exactly, the coherent signal that obtains by this air current measurer be in the prior art scheme the most accurately, after electronic digital display apparatus receives the pulse electrical signal that infrared photoelectric switch sends, this signal of telecommunication is through default routine processes, just can be on display screen show intuitively come in and go out the related data that obtains of desire, about the pulse electrical signal that infrared photoelectric switch sends is handled and changed to electronic digital display apparatus how, this is a prior art, does not explain in detail at this.

Owing in this utility model, taked the minimum air impeller parts of the resistance of motion, the infrared photoelectric switch of record wheel rotation situation does not contact again with the grating wheel in the air impeller parts, the air-flow fairlead can realize that again air-flow blows the orientation of impeller, thereby realize the one-directional rotation of impeller, the direct unidirectional promotion wheel rotation of the air-flow that this utility model utilizes the people to blow out, contactlessly measure the rotation situation of impeller by infrared photoelectric switch, and from electronic digital display apparatus, demonstrate the related data that will obtain intuitively, thereby, the utlity model has simple in structure, practical, the certainty of measurement height, good stability, volume is little, and is easy to carry, advantages such as use is dexterous, and reading is convenient.

Description of drawings:

Fig. 1 is the structural representation of air current measurer in this utility model;

Fig. 2 is air impeller parts and structural representation after infrared photoelectric switch combines among Fig. 1;

Fig. 3 is the enlarged drawing of A-A cutaway view among Fig. 1, has removed the air impeller parts;

Among the figure: the 1-air inlet pipe; 2-air-flow fairlead; 3-air impeller parts; 4 gas off-takes; The 5-infrared photoelectric switch; The 6-pedestal; The 7-end cap; The 8-lower seal; The last sealing member of 9-; 21-its directional air-guiding groove; The 22-locating slot; The 31-positioning disk; The 32-support; The 33-grating wheel; The 34-impeller; The 35-main shaft; The 36-bearing; The 37-loophole;

The specific embodiment:

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is illustrated for example:

The work of the light-operated electronics lung of described digital display, by the gas blow pipe parts, air current measurer and electronic digital display apparatus are formed, the gas blow pipe parts are connected with air inlet pipe air-tightness in the air current measurer, air current measurer is electrically connected with electronic digital display apparatus, described air current measurer is by air inlet pipe 1, air-flow fairlead 2, air impeller parts 3, gas off-take 4, infrared photoelectric switch 5, pedestal 6 and end cap 7 are formed, air impeller parts 3 are sleeved in the locating slot 22 in the air-flow fairlead 2 by the support on it 32, it is axially spacing by positioning disk 31, the conjunction of air-flow fairlead 2 gentle movable vane wheel components 3 is installed in the pedestal 6, between the lower surface of air-flow fairlead 2 and pedestal 6, be provided with lower seal 8, described end cap 7 is fixedlyed connected with pedestal 6 by screw thread, is provided with sealing member 9 between end cap 7 and pedestal 6; Described air impeller parts 3 are made up of positioning disk 31, support 32, grating wheel 33, impeller 34, main shaft 35 and bearing 36, support 32 is fixed into one with positioning disk 31, grating wheel 33 and impeller 34 all are fixed on the main shaft 35, the material of impeller 34, grating wheel 33 is a high molecule plastic, two gem bearings 36 are bearing on the support 32 by screw thread, both are adjustable at axial direction, main shaft 35 is bearing on the two gem bearings 36, be provided with eight loopholes 37 on grating wheel 33 equably, each loophole 37 is positioned on the same circumference; Described infrared photoelectric switch 5 is installed on the positioning disk 31, and grating wheel 33 is arranged in the notch of infrared photoelectric switch 5, and the loophole 37 on the grating wheel 33 is aimed at the sensing point of infrared photoelectric switch 5; On the circumference of described air-flow fairlead 2, be provided with tilting its directional air-guiding groove 21 symmetrically, the status requirement that air-flow fairlead 2 is installed in the pedestal 6 is: the line of centres of two locating slots 22 in the air-flow fairlead 2 is vertical with the centrage of air inlet pipe 1, becomes 30 ° between the centrage of described its directional air-guiding groove 21 and the RADIAL; Tilting its directional air-guiding groove 21 its distribution arrangements that are arranged on air-flow fairlead 2 circumference are consistent, and in this example, its directional air-guiding groove 21 distributes in the direction of the clock, if oppositely also can; The axial dimension of impeller 34 equates that with the interior hole dimension of air inlet pipe 1 air inlet pipe 1 is integral with pedestal 6.

Said structure of the present utility model and not exclusive, all employings identical with the technical program operation principle or etc. the structure of function replace and all belong to the row of protection of the present utility model.

Claims

1, the light-operated electronics spirometer of a kind of digital display, by the gas blow pipe parts, air current measurer and electronic digital display apparatus are formed, the gas blow pipe parts are connected with air inlet pipe air-tightness in the air current measurer, air current measurer is electrically connected with electronic digital display apparatus, it is characterized in that: described air current measurer comprises air inlet pipe (1), air-flow fairlead (2), air impeller parts (3), gas off-take (4), infrared photoelectric switch (5), pedestal (6) and end cap (7), air impeller parts (3) are installed in the air-flow fairlead (2), the conjunction of the gentle movable vane wheel component of air-flow fairlead (2) (3) is installed in the pedestal (6), and locate by the positioning disk (31) in the air impeller parts (3), between the lower axial end face of air-flow fairlead (2) and pedestal (6), be provided with lower seal (8), be connected for air-tightness between described end cap (7) and the pedestal (6); Described air impeller parts (3) are by positioning disk (31), support (32), grating wheel (33), impeller (34), main shaft (35) and bearing (36) are formed, support (32) is fixedlyed connected with positioning disk (31) and is integral, grating wheel (33) and impeller (34) all are fixed on the main shaft (35), main shaft (35) is bearing on the support (32) by two bearings (36), on grating wheel (33), be provided with several loopholes (37) equably, described infrared photoelectric switch (5) is installed on the positioning disk (31), grating wheel (33) is positioned at the notch of infrared photoelectric switch (5), and the loophole (37) on the grating wheel (33) is aimed at the sensing point of infrared photoelectric switch (5); On the circumference of described air-flow fairlead (2), be provided with tilting its directional air-guiding groove (21), angled between the centrage of its directional air-guiding groove (21) and the RADIAL, on air-flow fairlead (2), be provided with locating slot (22), air impeller parts (3) are installed in the air-flow fairlead (2) by locating slot (22), and make axial limiting by positioning disk (31).

2, the light-operated electronics spirometer of digital display according to claim 1, it is characterized in that: described bearing (36) but be the jewel bearing of roll adjustment, it with support (32) between by being threaded, the line of centres of two locating slots (22) is vertical with the centrage of air inlet pipe (1) in the air-flow fairlead (2).

3, the light-operated electronics spirometer of digital display according to claim 1 is characterized in that: the material of described impeller (34), grating wheel (33) is a macromolecule organic material, and air inlet pipe (1) is integral with pedestal (6).