Breathing simulator

Abstract

The invention relates to the field of respiration simulation, and discloses a respiration simulator which comprises a machine shell, a driving component, a respiration component and a connecting pipe arranged between the driving component and the respiration component are arranged in the machine shell, the respiration component comprises an outer shell, an inner shell located in the outer shell and a core shell located in the inner shell, and the outer shell is connected with the connecting pipe. An installation hole is formed in the outer surface of the inner shell, a flexible unit is arranged at the position of the installation hole, an inner support is arranged in the inner shell, the flexible unit comprises a guide rod arranged on the inner support in a sliding mode, an external step is arranged at one end of the guide rod, a connecting plate is arranged at the other end of the guide rod, and the guide rod is sleeved with a spring located between the external step and the inner support. The elastic force of the spring is used for driving the guide rod to move away from the mounting hole, the moving direction of the guide rod is parallel to the center line of the mounting hole, and a flexible flap is arranged between the hole wall of the mounting hole and the connecting plate, is made of a flexible material and is loosely arranged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of respiratory simulation, in particular to a respiratory simulator. BACKGROUND

[0002] Respiration refers to the process of gas exchange between the human body and the external environment. In respiratory protection evaluation (such as mask testing), a respiratory simulation device is often used to simulate the human respiratory state to realize the functional test of protective equipment such as masks. In the prior art, as shown in Figure 1 and Figure 2 , a piston structure is generally provided in the casing, and the piston is driven to move reciprocally by a lead screw technology to simulate the respiratory action. This method has many deficiencies, specifically: the simulation accuracy is not enough, it can only simply simulate the air flow during breathing, but the breathing intensity of different people is not the same; the breathing intensity of the same person is also not the same when walking, running, sleeping, etc.; when a person is breathing, carbon dioxide is also produced, and the exhaled air is humid and warm; these conditions are not effectively simulated, so the simulation accuracy is not accurate enough, which will affect the functional test results of protective equipment such as masks.

[0003] Based on the above problems, the present application provides a respiratory simulator. SUMMARY

[0004] To solve the problem of insufficient accuracy of respiratory simulation mentioned in the background, the present application provides a respiratory simulator.

[0005] To achieve the above technical purpose, the technical solution adopted by the present application is as follows.

[0006] A respiratory simulator, comprising a casing, a driving member and a breathing member are arranged in the casing, and a connecting pipe is arranged between the two; the breathing member comprises an outer shell, an inner shell located in the outer shell, and a core shell located in the inner shell, and the outer shell is connected with the connecting pipe;

[0007] An installation hole is formed in the outer surface of the inner shell, and a flexible unit is arranged at the installation hole; an inner support is arranged in the inner shell; the flexible unit comprises a guide rod slidingly arranged on the inner support, one end of the guide rod is provided with an external step, and the other end is provided with a connecting plate; a spring is arranged between the external step and the inner support outside the guide rod, and the elastic force of the spring is used to drive the guide rod to move away from the installation hole; the moving direction of the guide rod is parallel to the center line of the installation hole; a flexible flap is arranged between the hole wall of the installation hole and the connecting plate, the flexible flap is made of flexible material and is arranged in a loose state.

[0008] As a further improvement and optimization of the present application, the upper open end of the core shell is provided with a pipe four and the connection between the two is provided with a one-way valve three, which is used for one-way flow of air in the core shell into the pipe four;

[0009] The core shell is provided with a pipe five, the upper end of which extends out of the core shell and is provided with a pipe two, the connection between the pipe two and the pipe five is provided with a one-way valve two, which is used for one-way flow of air in the pipe two into the pipe five;

[0010] The end of the pipe two is provided with a breathing tube, the end of which extends out of the outer shell;

[0011] The upper surface of the inner shell is provided with a pipe three, the end of which is provided with a pipe one and the connection is provided with a one-way valve one, which is used for one-way flow of air in the pipe three into the pipe one, and the end of the pipe one is connected with the breathing tube.

[0012] As a further improvement and optimization of the present application, the lower closed end of the core shell is inlaid with a heating element.

[0013] As a further improvement and optimization of the present application, the core shell is provided with an air inlet disc near the lower closed end thereof, the inside of the air inlet disc is hollow and the upper surface thereof is provided with fine holes and an air inlet hole, the fine holes are arranged in an array, and the upper opening of the air inlet hole is connected with the pipe five.

[0014] As a further improvement and optimization of the present application, the machine shell is provided with a gas storage tank, the gas storage tank stores carbon dioxide, the gas outlet end of the gas storage tank is provided with a gas pump, the gas outlet end of the gas pump is provided with a gas pipe, the core shell is provided with an air inlet pipe, the upper end of the air inlet pipe extends out of the outer shell and is connected with the gas pipe.

[0015] As a further improvement and optimization of the present application, the machine shell is provided with a water storage tank, the water outlet of the water storage tank is provided with a water pump, the water outlet end of the water pump is provided with a water pipe, the core shell is provided with a water supplement pipe, the upper end of the water supplement pipe extends out of the outer shell and is connected with the water pipe.

[0016] As a further improvement and optimization of the present application, the driving member includes a barrel shell and a bellows;

[0017] The open end of the barrel shell is provided with a side bracket, a movable rod is slidingly arranged on the side bracket along the extension direction of the barrel shell, the end of the movable rod extending into the barrel shell is provided with a movable plate, and the end of the movable rod extending out of the barrel shell is provided with a driving assembly;

[0018] The outer surface of the barrel shell is provided with a connector near the closed end thereof, and the connector is connected with a connecting pipe;

[0019] One end of the bellows is connected with the inner wall of the barrel shell, and the other end is connected with the movable plate, and the bellows is located on the side of the movable plate facing the closed end of the barrel shell.

[0020] As a further improvement and optimization of the present application, the driving assembly comprises a cross support and a support arranged on the movable rod, the end of the support is hingedly arranged with a connecting rod, a sliding block is arranged on the cross support, the end of the connecting rod is hingedly connected with the sliding block, a connecting shaft is arranged on the cross support, and the end of the connecting shaft is dynamically arranged with a motor.

[0021] As a further improvement and optimization of the present application, the sliding block and the cross support constitute a sliding connection, and a linear module for driving the sliding block to move is arranged on the cross support.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] Firstly, in the process of driving the movable rod to move reciprocatingly by the driving assembly, the corrugated pipe is elongated or shortened, the volume of the region between the movable plate, the corrugated pipe and the closed end of the corrugated pipe is increased to inhale or decreased to exhale, so that the outer shell body is under negative pressure or returns to normal pressure, thereby making the flexible skin flap bulge outward or recover, the inner shell body is under negative pressure or returns to normal pressure, and the breathing state of the human lung is simulated.

[0024] When the inner shell body is under negative pressure, air enters the core shell through the breathing pipe, the pipeline two, the one-way valve two, the pipeline five and the air inlet disc in sequence, then passes through the water, and forms humid air, and the humid air enters the inner shell body through the one-way valve three and the pipeline four;

[0025] When the inner shell body returns to normal pressure, the humid air is discharged through the pipeline three, the one-way valve one, the pipeline one and the breathing pipe;

[0026] At the same time, carbon dioxide is drawn into the core shell by the air pump and flows together with the humid air, and at the same time, a simulated lung temperature environment is provided by the heating element.

[0027] Therefore, the simulation of one inhale and one exhale at the end of the breathing pipe can be realized, and the simulation degree is higher.

[0028] Secondly, the position of the sliding block in the driving assembly on the cross support is adjustable, so that the maximum displacement of the reciprocating movement of the movable rod is adjustable, that is, the breathing strength of different people can be simulated.

[0029] By adjusting the power of the motor, the time for one inhale and one exhale can be changed, and by adjusting the breathing strength, the breathing strength when a person walks or runs or sleeps can be simulated, and the breathing simulation is more realistic.

[0030] Thirdly, in the process of simulating the breathing strength of different people, no matter how the breathing strength is adjusted, since the air is exhaled by passing through the water, the effect of changing the corresponding humidity degree with the self-adaptive breathing strength can be achieved, and the simulation degree is higher. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Schematic diagram of prior art Figure 1 ;

[0032] Figure 2 Schematic diagram of prior art Figure 2 ;

[0033] Figure 3 Schematic diagram of the present application;

[0034] Figure 4 Internal schematic diagram of the present application;

[0035] Figure 5 Schematic diagram of the driving member;

[0036] Figure 6 Cross-sectional view of the barrel;

[0037] Figure 7 Schematic diagram of the breathing member;

[0038] Figure 8 Cross-sectional view of the breathing member;

[0039] Figure 9 Schematic diagram of the inner housing;

[0040] Figure 10 Schematic diagram of the flexible unit and the core barrel;

[0041] Figure 11 Cross-sectional view of the core barrel Figure 1 ;

[0042] Figure 12 Cross-sectional view of the core barrel Figure 2 .

[0043] Reference numerals in the drawings are:

[0044] 100, casing; 101, gas storage tank; 102, water storage tank; 103, connecting pipe; 200, driving member; 201, motor; 202, connecting shaft; 203, cross support; 204, sliding block; 205, linear module; 206, connecting rod; 207, support; 208, cylinder shell; 209, connector; 210, movable rod; 211, movable plate; 212, bellows; 300, breathing member; 301, outer housing; 302, breathing tube; 303, pipe one; 304, one-way valve one; 305, regulating valve; 306, inner housing; 307, pipe two; 308, one-way valve two; 309, pipe three; 310, flexible flap; 311, connecting plate; 312, spring; 313, core shell; 314, pipe four; 315, one-way valve three; 316, diaphragm; 317, heating element; 318, pipe five; 319, air inlet disc; 320, water replenishment pipe; 321, air inlet pipe. DETAILED DESCRIPTION

[0045] In order to further clarify the technical means and effects taken by the present application to achieve the predetermined object of the application, the specific embodiments, structures, features and effects thereof according to the present application are described in detail below in combination with the drawings and preferred embodiments.

[0046] REFERENCE Figure 3 AND Figure 4 A breathing simulator includes a casing 100, a driving member 200 and a breathing member 300 are arranged in the casing 100, and the two are connected through a connecting pipe 103. Through the cooperation of the three, the purpose of simulating human breathing is achieved.

[0047] I. Driving member 200:

[0048] REFERENCE Figure 5 AND Figure 6 The driving member 200 includes a cylinder shell 208 and a bellows 212.

[0049] The opening end of the cylinder shell 208 is provided with a side support, and a movable rod 210 is slidingly arranged on the side support along the extension direction of the cylinder shell 208. The end of the movable rod 210 extending into the cylinder shell 208 is provided with a movable plate 211, and the end of the movable rod 210 extending out of the cylinder shell 208 is provided with a driving assembly.

[0050] The outer surface of the cylinder shell 208 is provided with a connector 209 close to the closed end thereof, and the connector 209 is connected with the connecting pipe 103.

[0051] One end of the bellows 212 is connected with the inner wall of the cylinder shell 208, and the other end is connected with the movable plate 211. The bellows 212 is located on the side of the movable plate 211 facing the closed end of the cylinder shell 208. Therefore, during the reciprocating movement of the movable rod 210 driven by the driving assembly, the bellows 212 will be elongated or shortened, and the volume of the area between the movable plate 211, the bellows 212 and the closed end of the cylinder shell 208 will be increased for inhalation or decreased for exhalation.

[0052] The driving assembly comprises a cross support 203 and a support 207 arranged on the movable rod 210. The end of the support 207 is hingedly provided with a connecting rod 206. The cross support 203 is provided with a sliding block 204 and a linear module 205 for driving the sliding block 204 to move on the cross support 203. The end of the connecting rod 206 is hingedly connected with the sliding block 204. The linear module 205 can adopt existing electric telescopic rod technology or existing screw linear movement technology, which will not be described in detail.

[0053] The cross support 203 is provided with a connecting shaft 202. The end of the connecting shaft 202 is provided with a motor 201.

[0054] The hinged shafts in the driving assembly are parallel to each other and perpendicular to the movable rod 210. The moving direction of the sliding block 204 is perpendicular to the hinged shafts. The connecting shaft 202 is parallel to the hinged shafts. Therefore, the driving assembly constitutes a connecting rod structure, and the movable rod 210 can be driven to move reciprocally by the motor 201. In addition, since the position of the sliding block 204 on the cross support 203 is adjustable, the maximum displacement of the reciprocating movement of the movable rod 210 is adjustable.

[0055] II. The breathing component 300:

[0056] Referring to Figures 7-12 , the breathing component 300 comprises an outer shell 301, an inner shell 306 located in the outer shell 301, and a core shell 313 located in the inner shell 306. The outer shell 301 is connected with the connecting pipe 103. When the driving assembly drives the cylinder shell 208 to inhale or exhale, the outer shell 301 is in negative pressure or returns to normal pressure.

[0057] Referring to Figure 9 and Figure 10 , the outer surface of the inner shell 306 is provided with mounting holes, and the mounting holes are provided with flexible units. The mounting holes are provided with a plurality of flexible units.

[0058] The inner shell 306 is provided with an inner support, the flexible unit includes a guide rod slidingly arranged on the inner support, one end of the guide rod is provided with an external step, the other end is provided with a connecting plate 311, the guide rod is externally sleeved with a spring 312 located between the external step and the inner support, the elastic force of the spring 312 is used to drive the guide rod to move away from the mounting hole, and the moving direction of the guide rod is parallel to the center line of the mounting hole.

[0059] A flexible flap 310 is arranged between the hole wall of the mounting hole and the connecting plate 311, the flexible flap 310 is made of flexible material, for example, rubber, silica gel and the like, and is arranged in a loose manner, so that when the inner shell 306 is in negative pressure or returns to normal pressure, the flexible flap 310 will bulge outward or return, so that the inner shell 306 is in negative pressure or returns to normal pressure.

[0060] Referring to Figure 11 With Figure 12 , the lower closed end of the core shell 313 is inlaid with a heating element 317, which can be realized by using existing electric heating technology, which will not be described here.

[0061] The upper open end of the core shell 313 is provided with a pipeline four 314, and the connection between the two is provided with a one-way valve three 315, which is used to make the air in the core shell 313 flow into the pipeline four 314 in one direction.

[0062] The core shell 313 is provided with an air inlet disc 319 close to the lower closed end thereof, the air inlet disc 319 is hollow inside and the upper surface thereof is provided with a plurality of fine holes and an air inlet hole, the air inlet hole is provided with a pipeline five 318 at the upper opening thereof, the upper end of the pipeline five 318 extends out of the core shell 313 and is provided with a pipeline two 307, the connection between the pipeline two 307 and the pipeline five 318 is provided with a one-way valve two 308, which is used to make the air in the pipeline two 307 flow into the pipeline five 318 in one direction.

[0063] Further, referring to Figure 4 And Figures 7-12 , the machine shell 100 is further provided with a gas storage tank 101 and a water storage tank 102, the former stores carbon dioxide, and the latter stores water.

[0064] The gas outlet end of the gas storage tank 101 is provided with a gas pump (not shown in the figure), the gas outlet end of the gas pump is provided with a gas pipeline, the core shell 313 is provided with an air inlet pipe 321, the upper end of the air inlet pipe 321 extends out of the outer shell 301 and is connected with the gas pipeline.

[0065] The water outlet of the water storage tank 102 is provided with a water pump (not shown in the figure), the water outlet end of the water pump is provided with a water pipeline, the core shell 313 is provided with a water supplement pipe 320, the upper end of the water supplement pipe 320 extends out of the outer shell 301 and is connected with the water pipeline.

[0066] Water can be drawn into the core shell 313 by a water pump, carbon dioxide can be drawn into the core shell 313 by a gas pump, and the water in the core shell 313 can be heated to a set temperature, for example, 37 degrees, by the heating element 317, it should be noted that the temperature of the human lung is also 37 degrees.

[0067] Further, the air inlet disc 319 and the lower end of the air inlet pipe 321 are located below the liquid level of the water in the core shell 313.

[0068] Further, the end of the pipeline two 307 is provided with a breathing pipe 302, and the end of the breathing pipe 302 extends out of the outer shell 301.

[0069] Further, the upper surface of the inner shell 306 is provided with a pipeline three 309, the end of the pipeline three 309 is provided with a pipeline one 303, the end of the pipeline one 303 is connected with the breathing pipe 302, the pipeline three 309 is provided with two, the pipeline one 303 is correspondingly provided with two, the connection part of the pipeline three 309 and the pipeline one 303 corresponds to two, one connection part is provided with a one-way valve one 304, the one-way valve one 304 is used for one-way flowing of the air in the pipeline three 309 into the pipeline one 303, and the other connection part is provided with an adjusting valve 305, the adjusting valve 305 is used for adjusting the flow area of the air flow, which is realized by the prior art and will not be described here.

[0070] Further, the core shell 313 is provided with a film 316 close to the upper opening of itself, the film 316 can make the humid air pass through, but can block the water droplets, which is realized by the prior art and will not be described here.

[0071] The working principle of the present application is as follows:

[0072] During the reciprocating movement of the driving assembly, the bellows 212 is elongated or shortened, the volume of the region between the movable plate 211, the bellows 212 and the closed end of the cylinder shell 208 is increased to inhale or decreased to exhale, so that the outer shell 301 is in negative pressure or restores to normal pressure, so that the flexible flap 310 is inflated outward or restored, and the inner shell 306 is in negative pressure or restores to normal pressure.

[0073] When the inner shell 306 is in negative pressure, the air will pass through the breathing pipe 302, the pipeline two 307, the one-way valve two 308, the pipeline five 318, the air inlet disc 319 into the core shell 313 in sequence, and then form humid air after passing through the 37-degree water, and the humid air enters the inner shell 306 through the one-way valve three 315 and the pipeline four 314;

[0074] When the inner shell 306 restores to normal pressure, the humid air is discharged through the pipeline three 309, the one-way valve one 304, the pipeline one 303 and the breathing pipe 302;

[0075] At the same time, the carbon dioxide is drawn into the core-shell 313 by the air pump and flows along with the humidified air;

[0076] At the same time, a simulated lung temperature environment is provided by the heating element;

[0077] As described above, the simulation of one breath in and one breath out of the respiratory action can be realized at the end of the breathing tube 302, and the simulation degree is higher;

[0078] Further, the position of the slider in the driving assembly on the cross support is adjustable, so the maximum displacement of the reciprocating movement of the movable rod is adjustable, that is, the breathing strength of different people can be simulated;

[0079] By adjusting the power of the motor, the time for one breath in and one breath out can be changed, and in combination with the adjustment of the breathing strength, the breathing strength when a person walks or runs or sleeps can be simulated, and the breathing simulation is more realistic;

[0080] Further, in the process of simulating the breathing strength of different people, no matter how the breathing strength is adjusted, since the air is exhaled by passing through the water, the effect of changing the corresponding humidity degree with the self-adaptive breathing strength can be achieved, and the simulation degree is higher.

[0081] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any brief introduction, modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application, as long as it does not depart from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A breathing simulator, comprising a housing (100), wherein a driving component (200) and a breathing component (300) are disposed within the housing (100), and a connecting pipe (103) is disposed between the two, characterized in that, The breathing component (300) includes an outer shell (301), an inner shell (306) located inside the outer shell (301), and a core shell (313) located inside the inner shell (306). The outer shell (301) is connected to the connecting pipe (103). The outer surface of the inner shell (306) is provided with a mounting hole and a flexible unit is provided at the mounting hole. An inner support is provided in the inner shell (306). The flexible unit includes a guide rod that is slidably set on the inner support. One end of the guide rod is provided with an external step and the other end is provided with a connecting plate (311). A spring (312) is sleeved on the outside of the guide rod between the external step and the inner support. The elastic force of the spring (312) is used to drive the guide rod to move away from the mounting hole. The direction of movement of the guide rod is parallel to the center line of the mounting hole. A flexible flap (310) is provided between the hole wall of the mounting hole and the connecting plate (311). The flexible flap (310) is made of flexible material and is loosely arranged.

2. A breathing simulator according to claim 1, characterized in that, The upper open end of the core shell (313) is provided with a pipe four (314) and a one-way valve three (315) is provided at the connection between the two. The one-way valve three (315) is used to allow the air in the core shell (313) to flow into the pipe four (314) in one direction. The core shell (313) is provided with a pipe five (318), the upper end of the pipe five (318) extends out of the core shell (313) and is provided with a pipe two (307), and a one-way valve two (308) is provided at the connection between the pipe two (307) and the pipe five (318). The one-way valve two (308) is used to allow the air in the pipe two (307) to flow into the pipe five (318) in one direction. A breathing tube (302) is provided at the end of the second pipe (307), and the end of the breathing tube (302) extends out of the outer shell (301); The upper surface of the inner shell (306) is provided with a pipe three (309), the end of the pipe three (309) is provided with a pipe one (303) and a one-way valve one (304) is provided at the connection. The one-way valve one (304) is used to allow the air in the pipe three (309) to flow into the pipe one (303) in one direction. The end of the pipe one (303) is connected to the breathing tube (302).

3. A breathing simulator according to claim 2, characterized in that, A heating element (317) is embedded in the lower closed end of the core shell (313).

4. A breathing simulator according to claim 3, characterized in that, The core shell (313) is provided with an air intake plate (319) near its lower closed end. The air intake plate (319) is hollow inside and has fine holes and air intake holes on its upper surface. Multiple fine hole arrays are provided. The upper opening of the air intake hole is connected to pipe five (318).

5. A breathing simulator according to claim 2 or 4, characterized in that, A gas storage tank (101) is provided inside the housing (100), which stores carbon dioxide. An air pump is provided at the outlet of the gas storage tank (101), and an air pipe is provided at the outlet of the air pump. An air inlet pipe (321) is provided inside the core shell (313), and the upper end of the air inlet pipe (321) extends out of the outer shell (301) and is connected to the air pipe.

6. A breathing simulator according to claim 2 or 4, characterized in that, A water storage tank (102) is installed inside the housing (100). A water pump is installed at the outlet of the water storage tank (102). A water pipe is installed at the outlet of the water pump. A water supply pipe (320) is installed inside the core shell (313). The upper end of the water supply pipe (320) extends out of the outer shell (301) and is connected to the water pipe.

7. A breathing simulator according to claim 5, characterized in that, The drive component (200) includes a cylindrical shell (208) and a bellows (212); A side support is provided at the open end of the cylindrical shell (208), and a movable rod (210) is slidably provided on the side support along the extension direction of the cylindrical shell (208). A movable plate (211) is provided at the end of the movable rod (210) that extends into the cylindrical shell (208), and a drive assembly is provided at the end of the movable rod (210) that extends out of the cylindrical shell (208). The outer surface of the shell (208) is provided with a nozzle (209) near its closed end, and the nozzle (209) is connected to the connecting pipe (103); One end of the bellows (212) is connected to the inner wall of the shell (208), and the other end is connected to the movable plate (211). The bellows (212) is located on the side of the movable plate (211) facing the closed end of the shell (208).

8. A breathing simulator according to claim 7, characterized in that, The drive assembly includes a cross bracket (203) and a support (207) mounted on a movable rod (210). A connecting rod (206) is hinged to the end of the support (207). A slider (204) is mounted on the cross bracket (203). The end of the connecting rod (206) is hinged to the slider (204). A connecting shaft (202) is mounted on the cross bracket (203). A motor (201) is powered at the end of the connecting shaft (202).

9. A breathing simulator according to claim 8, characterized in that, The slider (204) and the cross bracket (203) are connected in a sliding manner. The cross bracket (203) is provided with a linear module (205) for driving the slider (204) to move.

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