CN217409521U

CN217409521U - Breathing machine

Info

Publication number: CN217409521U
Application number: CN202123342736.1U
Authority: CN
Inventors: 高超; 陈乔珠; 田航; 郑婕; 尚游; 戴旻昱; 王松
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-09-13
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a breathing machine, wherein, the breathing machine comprises an air-oxygen mixing device and a gas buffering component; the air-oxygen mixing device is provided with an air inlet, an oxygen inlet and an air-oxygen gas outlet, the air inlet and the oxygen inlet are both connected with an air inlet pipe, and the air-oxygen gas outlet is connected with an air outlet pipe; the gas buffering assembly comprises a flow dividing piece, the flow dividing piece is arranged at the air oxygen gas outlet and is positioned in the middle of the air oxygen gas outlet, and the cross sectional area of the flow dividing piece is gradually increased from the air oxygen gas outlet to the direction of the gas outlet pipe. The utility model discloses technical scheme makes the gas circuit of empty oxygen gas outlet change into along the radial evenly distributed of passageway from the state that gaseous middle part is fast, marginal speed is slow, reduces flow measurement error, improves the breathing machine performance.

Description

Breathing machine

Technical Field

The utility model relates to the technical field of medical equipment, in particular to breathing machine.

Background

The breathing machine is mainly used for treating respiratory failure patients clinically, and the working principle of the breathing machine is that high-pressure gas is utilized to assist the patients to breathe.

The breathing machine on the existing market is usually provided with the detection module of empty oxygen mixing arrangement and oxygen concentration, and empty oxygen mixing arrangement forms empty oxygen mist through the mixture with oxygen and air, and thereby detection module detects the gas circuit before empty oxygen mixes and after mixing respectively by mass flow sensor and calculates out oxygen concentration, and empty oxygen mixing arrangement and detection module combine to use and form the closed-loop control to gaseous oxygen concentration.

In the gas circuit after mixing in the prior art, because of the limitation of the gas circuit structure, the limitation of uneven distribution of gas flow velocity in the gas circuit is formed, so that the problem of inaccurate measurement of a flow sensor is caused, and the performance of a breathing machine is influenced.

SUMMERY OF THE UTILITY MODEL

The main purpose of the utility model is to provide a respirator, which aims to realize the uniform distribution of the airflow speed in the gas circuit of the respirator.

In order to achieve the above object, the present invention provides a ventilator, which comprises:

the air-oxygen mixing device is provided with an air inlet, an oxygen inlet and an air-oxygen gas outlet, the air inlet and the oxygen inlet are both connected with an air inlet pipe, and the air-oxygen gas outlet is connected with an air outlet pipe; and

the gas buffering assembly comprises a flow dividing piece, the flow dividing piece is installed at the oxygen-air outlet and is located in the middle of the oxygen-air outlet, and the cross sectional area of the flow dividing piece is gradually increased towards the oxygen-air outlet in the direction of the outlet pipe.

Optionally, the flow divider is of a conical structure, and the axis of the flow divider and the central line of the air outlet pipe are located on the same straight line.

Optionally, the gas buffer assembly further comprises a flow guiding ring connected to an edge of the empty oxygen gas outlet, two opposite surfaces of the flow guiding ring are both inclined inwards towards the middle part along the edge, and the flow dividing member is installed in the flow guiding ring.

Optionally, a mounting hole is formed in the middle of the diversion ring, the flow divider is arranged in the mounting hole, and the diameter of the end part of the flow divider, which is close to the air outlet pipe, on one side is the same as that of the mounting hole;

and/or the central line of the flow guide ring and the axis of the flow dividing piece are positioned on the same straight line.

Optionally, the gas buffering assembly further comprises a connecting plate, one end of the connecting plate is connected to the side surface of the flow dividing piece, and the other end of the connecting plate is connected to one side surface of the drainage ring, which is close to the gas outlet pipe, and extends into the mounting hole.

Optionally, the number of the connecting plates is two, and the two connecting plates are symmetrically distributed on two sides of the flow dividing piece;

and/or the thickness of the connecting plate is gradually increased from the air-oxygen gas outlet to the air outlet pipe.

Optionally, the diversion ring and the diversion member are of an integrally formed structure.

Optionally, the gas buffering component further comprises a grid, and the grid is arranged on one side of the flow dividing piece close to the gas outlet pipe.

Optionally, the grid is a circular grid, a plurality of shunt holes are arranged on the grid, and the shunt holes are arranged on the whole surface of the grid.

Optionally, the ventilator further comprises two flow sensors, one of the flow sensors is mounted on the air inlet pipe of the air inlet, and the other of the flow sensors is mounted on the air outlet pipe.

The utility model discloses technical scheme sets up gaseous buffering subassembly through the empty oxygen gas outlet department that is located the empty oxygen mixing arrangement of breathing machine, and gaseous buffering subassembly is including reposition of redundant personnel piece, and the cross-sectional area of reposition of redundant personnel piece is crescent by the direction of empty oxygen gas outlet towards the outlet duct to the gas circuit that makes empty oxygen gas outlet changes into along the radial evenly distributed of passageway from the state that gaseous middle part is fast, marginal speed is slow, reduces flow measurement error, improves the breathing machine performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a ventilator of the present invention;

FIG. 2 is a schematic structural view of the respirator of FIG. 1 without an outlet tube;

FIG. 3 is a schematic view of the respirator of FIG. 2 shown without the outlet tube;

FIG. 4 is a side cross-sectional view of the ventilator of FIG. 1;

fig. 5 is a schematic structural view of a gas buffering assembly in the breathing machine of the present invention;

FIG. 6 is a schematic view of another perspective of the gas cushion assembly of the ventilator of the present invention;

FIG. 7 is an exploded view of the gas cushion assembly of FIG. 5;

FIG. 8 is a schematic view of the flow divider, the bleed ring, and the connecting plate of the gas cushion assembly of FIG. 5.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Breathing machine	10	Air and oxygen mixing device
11	Air inlet	12	Oxygen inlet
				13	Air oxygen gas outlet	14	Air inlet pipe
15	Air outlet pipe	30	Gas buffer assembly
				31	Flow divider	32	Drainage ring
321	Mounting hole	33	Connecting plate
				34	Grid	341	Flow dividing hole
50	Flow sensor	70	Proportional valve

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a breathing machine 1.

In the embodiment of the present invention, as shown in fig. 1 to 4, the ventilator 1 includes an air-oxygen mixing device 10 and a gas buffering assembly 30; the air-oxygen mixing device 10 is provided with an air inlet 11, an oxygen inlet 12 and an air-oxygen gas outlet 13, the air inlet 11 and the oxygen inlet 12 are both connected with an air inlet pipe 14, and the air-oxygen gas outlet 13 is connected with an air outlet pipe 15; the gas buffer assembly 30 includes a flow divider 31, the flow divider 31 is installed at the empty oxygen gas outlet 13 and located in the middle of the empty oxygen gas outlet 13, and the cross-sectional area of the flow divider 31 gradually increases from the empty oxygen gas outlet 13 to the outlet pipe 15.

The air-oxygen mixing device 10 comprises an air inlet 11, an oxygen inlet 12 and an air-oxygen gas outlet 13, wherein air enters the air-oxygen mixing device 10 from the air inlet 11, oxygen enters the air-oxygen mixing device 10 from the oxygen inlet 12, and after being mixed by the air-oxygen mixing device 10, gas with enough oxygen is formed and is discharged from the air-oxygen gas outlet 13. The oxygen inlet 12 and the air inlet 11 are both connected with an air inlet pipe 14, and the air outlet is connected with an air outlet pipe 15.

The flow divider 31 is disposed in the middle of the empty oxygen gas outlet 13 and connected to the edge of the empty oxygen gas outlet 13, the cross-sectional area of the flow divider 31 gradually increases from the empty oxygen gas outlet 13 toward the outlet tube 15, for the gas passing through the empty oxygen gas outlet 13, because the gas outlet is disposed in the middle in correspondence with the empty oxygen gas outlet 13, the gas output from the empty oxygen gas outlet 13 is the gas with large middle flow velocity and small peripheral flow velocity, the guiding gas passing through the flow divider 31 flows along the outer surface of the flow divider 31, the center of the flow divider 31 is radially distributed at the edge of the flow divider 31, the gas with high flow velocity at the middle is radially distributed at the edge relative to the empty oxygen gas outlet 13, the high flow velocity gas at the middle is guided and dispersed by the flow divider 31 to form the gas with low flow velocity and uniform distribution along the peripheral edge, the gas flows into the outlet tube 15, so that the flow velocity center in the gas in the outlet tube 15 is the same as the peripheral edge, the flow sensor 50 is convenient for detecting the passing gas, so that the measurement accuracy of the flow sensor 50 is improved, and the performance and the working stability of the breathing machine 1 are further improved.

Further, the air-oxygen mixing device 10 is further provided with a proportional valve 70, and the oxygen concentration in the air outlet pipe 15 measured by the flow sensor 50 is used for adjusting the air inlet proportion of the oxygen inlet 12 and the air inlet 11, so as to achieve the effect of adjusting the oxygen concentration in the air outlet pipe 15.

Further, empty oxygen mixing arrangement 10 still is provided with venturi, and venturi has utilized venturi principle, utilizes the negative pressure that high-pressure oxygen formed behind the convergent spray tube to attract the air and reach the purpose that empty oxygen mixes to two way symmetrical structure has been set up, is provided with two venturi and connects two oxygen import 12 respectively promptly, and two systems work independently, reduce because of the component damage influences the possibility of machine work.

The utility model discloses technical scheme sets up gaseous buffering subassembly 30 through the empty oxygen gas outlet 13 department that is located the empty oxygen mixing arrangement 10 of breathing machine 1, and gaseous buffering subassembly 30 is including reposition of redundant personnel 31, and the cross-sectional area of reposition of redundant personnel 31 is increased gradually towards the direction of outlet duct 15 by empty oxygen gas outlet 13 to the gas circuit that makes empty oxygen gas outlet 13 changes into along the radial evenly distributed of passageway from the state that gaseous middle part is fast, marginal speed is slow, reduces flow measurement error, improves 1 performance of breathing machine.

In an embodiment of the present invention, as shown in fig. 5 to 8, the flow dividing member 31 is a conical structure, and the axis of the flow dividing member 31 and the central line of the air outlet pipe 15 are located on the same straight line.

The reposition of redundant personnel piece 31 of conical structure is the plane for one end, the other end is the pinnacle, the side is the shape of curved surface, one end can reduce the reduction to the gas flow rate effectively for the pinnacle, make reposition of redundant personnel piece 31 only be used for the velocity of flow of distributed gas, the side is evenly distributed's curved surface, diameter on the same horizontal line is the same, and then make reposition of redundant personnel piece 31 the radial distribution effect of the velocity of flow of gas towards equidirectional not the same, guaranteed that the same planar different positions gas flow velocity is the same in the outlet duct 15. One end of the flow divider 31 is a plane, and the plane end can be conveniently combined with or connected with other gas buffering assemblies 30 for use, so that the combination of a plurality of assemblies is facilitated.

In an embodiment of the present invention, as shown in fig. 5 to 8, the gas buffering assembly 30 further includes a flow guiding ring 32, the flow guiding ring 32 is connected to the edge of the empty oxygen gas outlet 13, two opposite surfaces of the flow guiding ring 32 are both inclined inward toward the middle portion along the edge, and the flow dividing member 31 is installed in the flow guiding ring 32.

The outer edge of drainage ring 32 is connected in the inward flange of empty oxygen gas outlet 13, can avoid gaseous from the clearance of drainage ring 32 with empty oxygen gas outlet 13 in through, has guaranteed the effect of drainage ring 32 to can realize the water conservancy diversion effect of drainage ring 32, with gaseous direction mounting hole 321, with the contact of reposition of redundant personnel piece 31, realize gaseous radial distribution. The opposite surfaces of the inducer ring 32 are both inclined inwardly along the edges towards the middle, which can serve to reduce the swirling of the gas stream.

In an embodiment of the present invention, as shown in fig. 6 and 8, a mounting hole 321 is formed in the middle of the diversion ring 32, the flow divider 31 is disposed in the mounting hole 321, and the diameter of the end of the flow divider 31 near the outlet pipe 15 is the same as the diameter of the mounting hole 321;

and/or the central line of the drainage ring 32 and the axis of the flow dividing part 31 are positioned on the same straight line.

In reposition of redundant personnel 31 located mounting hole 321, reposition of redundant personnel 31 handled the gas after through the induced flow ring 32, and gaseous process induced flow ring 32 has reduced the air vortex promptly, has reduced the influence to the reposition of redundant personnel 31 distribution gas flow rate, has improved reposition of redundant personnel 31's effect, and then reduces flow measurement error, improves breathing machine 1 performance. It can be understood that the diameter of the end portion of the flow dividing member 31 close to the side of the air outlet pipe 15 is the same as the diameter of the mounting hole 321, that is, the air can be divided by the flow dividing member 31 through the mounting hole 321, the stability of the flow dividing member 31 for gas flow division is ensured, and the radial distribution effect of the flow dividing member 31 for the air is ensured

Further, the central line of the flow guiding ring 32 and the axial line of the flow divider 31 are located on the same straight line, it can be understood that the outer edge of the flow guiding ring 32 is connected to the inner edge of the empty oxygen gas outlet 13, the flow guiding ring 32 is of a circular structure, the axial line of the flow divider 31 and the axial line of the gas outlet pipe 15 are located on the same straight line, and because the central line of the flow guiding ring 32 and the axial line of the flow divider 31 are located on the same straight line, the central line of the flow guiding ring 32, the axial line of the flow divider 31, and the central line of the gas outlet pipe 15 are all located on the same straight line, and the center of the central line mounting hole 321 of the flow guiding ring 32 is the center of the mounting hole 321, i.e. the center of the mounting hole 321 and the axial line of the flow divider 31, it can be understood that the center of the maximum gas flow velocity flowing from the mounting hole 321 to the flow divider 31 contacts the center of the sharp-top of the flow divider 31, and then is radially distributed by the flow velocity of the flow divider 31, ensuring that the gas flow velocities at different positions of the same plane in the gas outlet pipe 15 are the same.

In an embodiment of the present invention, as shown in fig. 5 to 8, the gas buffering assembly 30 further includes a connecting plate 33, one end of the connecting plate 33 is connected to the side of the flow divider 31, and the other end is connected to a side surface of the flow guiding ring 32 close to the gas outlet pipe 15 and extends into the mounting hole 321.

Connecting plate 33 is connected in the surface of reposition of redundant personnel 31 and the drainage ring 32 and is close to the side surface of outlet duct 15, and the setting of connecting plate 33 has improved the bulk strength of reposition of redundant personnel 31 and drainage ring 32 for the two is difficult to rock and remove, influences reposition of redundant personnel effect of reposition of redundant personnel 31.

In an embodiment of the present invention, as shown in fig. 5 to 8, the number of the connecting plates 33 is two, and the two connecting plates 33 are symmetrically distributed on two sides of the flow divider 31;

and/or the thickness of the connection plate 33 is gradually increased from the air oxygen gas outlet 13 toward the outlet pipe 15.

The quantity of connecting plate 33 is two, and two connecting plate 33 symmetric connection are in the both sides of reposition of redundant personnel piece 31, and the setting of two connecting plates 33 has improved the joint strength of reposition of redundant personnel piece 31 with drainage ring 32, and then can adapt to the operational environment of the gas flow of higher strength and the velocity of flow, have guaranteed the working effect of reposition of redundant personnel piece 31 and drainage ring 32 to the life of gas cushion assembly 30 has been improved.

Further, the thickness of the connecting plate 33 is gradually increased from the empty oxygen gas outlet 13 to the outlet pipe 15, so that the connecting plate 33 also has the effect of radial distribution of the flow velocity of the gas, the blocking of the connecting plate 33 on the gas is avoided, the shunting effect of the shunting piece 31 is not influenced, and the effect of uniform radial distribution of the gas after passing through the connecting plate 33 and the shunting piece 31 is ensured.

In an embodiment of the present invention, the diversion ring 32 and the diversion member 31 are integrally formed.

The drainage ring 32 and the reposition of redundant personnel piece 31 are the integrated into one piece structure, integrated into one piece's drainage ring 32 and reposition of redundant personnel piece 31 have guaranteed the intensity that drainage ring 32 and reposition of redundant personnel piece 31 are connected, it is average to have guaranteed that drainage ring 32 and reposition of redundant personnel piece 31 stress distribution when atress simultaneously, avoid the reposition of redundant personnel piece 31 in removing or the droing of installation, perhaps in the unstable condition of installation that takes place under the condition of dismantling through installation many times, avoided reintroducing the connecting piece and connected the two, service life is prolonged. Secondly, be favorable to the lightweight of gas buffer unit 30, practiced thrift manufacturing cost.

The diversion ring 32 and the flow dividing piece 31 which are arranged separately can replace the diversion ring 32 or the flow dividing piece 31, and the situation that the diversion ring 32 or the flow dividing piece 31 is damaged excessively to cause functional failure is avoided.

In an embodiment of the present invention, as shown in fig. 5 to 7, the gas buffering assembly 30 further includes a grating 34, and the grating 34 is disposed on one side of the flow divider 31 close to the outlet pipe 15.

The grille 34 is used for accelerating the development speed of the air flow, and the air flow speed in the channel can reach the target air flow speed in a short distance, and can reach the stable state of the air flow speed in a shorter distance, so that the air buffer assembly 30 can be suitable for the short-length air outlet pipe 15, and the working efficiency and the applicability of the air buffer assembly 30 are improved.

Further, the size of the grille 34 determines the airflow speed in the passage, so that the airflow speed in the passage can be controlled by replacing different grills 34, different grills 34 can be different in shape and size, and the diameters of the diversion holes 341 of the grills 34 are different, and it can be understood that the speed of the change of the gas speed can be changed by changing the diameters of the diversion holes 341 in the embodiment, so that the control of the gas is realized.

Furthermore, the grating 34 has the characteristics of simple structure and convenient replacement, and can be conveniently disassembled and assembled, thereby improving the assembly and disassembly efficiency.

In an embodiment of the present invention, as shown in fig. 7, the grating 34 is a circular grating 34, a plurality of shunting holes 341 are disposed on the grating 34, and the shunting holes 341 are arranged on the entire surface of the grating 34.

In this embodiment, the grid 34 is a circular grid 34, and the diameter of the grid 34 is the same as that of the diversion ring 32, so that the grid 34 can cover the gas passing through the diversion ring 32 and the diversion member 31, the gap between the grid 34 and the oxygen-free gas outlet 13 is reduced, the incomplete gas treatment is avoided, and the effect of uniform radial distribution of the gas passing through the grid 34 is ensured.

Further, the arrangement of the plurality of shunting holes 341 ensures the effect of accelerating the development speed of the airflow of the grating 34, ensures the effect that the gas can uniformly pass through the shunting holes 341 of the grating 34, and achieves the stable state of the gas flow rate within a shorter distance.

In an embodiment of the present invention, as shown in fig. 1 and 4, the ventilator 1 further includes two flow sensors 50, one flow sensor 50 is installed in the air inlet pipe 14 of the air inlet 11, and one flow sensor 50 is installed in the air outlet pipe 15.

In the breathing machine 1, the intake pipe 14 and the 15 departments of outlet duct of air inlet 11 all are provided with flow sensor 50, detect gas flow by flow sensor 50 respectively through the gas circuit before mixing by empty oxygen and after mixing to calculate out oxygen concentration, in order to reach the measurement and the control to oxygen concentration in the gas, and then guaranteed that oxygen concentration in the gas can not too big or undersize, improved the security and the functional accuracy of breathing machine 1, improved work efficiency.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A ventilator, characterized in that the ventilator comprises:

2. The respirator of claim 1, wherein the splitter is conical in configuration, and wherein the axis of the splitter and the centerline of the outlet conduit are collinear.

3. The ventilator of claim 2 wherein said gas cushion assembly further comprises a flow directing ring attached to an edge of said empty oxygen gas outlet, said flow directing ring having opposite surfaces each inclined inwardly along said edge toward a central portion, said flow splitter being mounted within said flow directing ring.

4. The respirator of claim 3, wherein a mounting hole is formed in the middle of the flow guiding ring, the flow dividing piece is arranged in the mounting hole, and the diameter of the end part of the flow dividing piece close to one side of the air outlet pipe is the same as that of the mounting hole;

5. The ventilator of claim 4 wherein the gas cushion assembly further comprises a connecting plate, one end of the connecting plate is connected to the side surface of the flow divider, and the other end of the connecting plate is connected to a side surface of the flow-directing ring adjacent to the outlet tube and extends into the mounting hole.

6. The respirator of claim 5, wherein the number of the connecting plates is two, and the two connecting plates are symmetrically distributed on two sides of the flow divider;

7. The ventilator of claim 5, wherein the baffle ring and the flow splitter are of unitary construction.

8. The ventilator of any one of claims 1 to 7, wherein said gas cushion assembly further comprises a grille disposed on a side of said diverter proximate said outlet conduit.

9. The ventilator of claim 8 wherein said grille is a circular grille, said grille having a plurality of distribution holes, said plurality of distribution holes being arranged over the entire surface of said grille.

10. The ventilator of claim 1 further comprising two flow sensors, one said flow sensor mounted to said inlet duct of said air inlet and one said flow sensor mounted to said outlet duct.