A breathing / blowing airflow resistance testing device

Abstract

The present application provides a breathing / blowing airflow resistance testing device, comprising: a control module, a testing module, and a cabinet; the testing module comprises: a servo motor, a cylinder, a head mold, and a float flowmeter; the float flowmeter is located on the side panel of the cabinet; the servo motor is electrically connected to the cylinder; the cylinder is connected to the head mold and the float flowmeter, and the channel connecting the cylinder, the head mold, and the float flowmeter is a Y-shaped pipe. The present application adopts a head mold specified in the standard, and tests the breathing resistance of the head mold itself before testing to correct the initial breathing air resistance. At the same time, it uses both an external air source and a built-in air cylinder to generate the air source, thereby solving the problems of poor compatibility of existing equipment, the inability to simultaneously perform both breathing and blowing tests, and inaccurate test results, thereby achieving more accurate measurement results and a wider range of test functions.

Description

Technical Field

[0001] The present application relates to the field of airflow resistance testing, and in particular to a breathing / blowing airflow resistance testing device. Background Art

[0002] Snorkels are equipment that allows snorkelers to breathe while their face remains submerged. Snorkels are subject to three main testing requirements: factory inspection, on-site inspection, and pre-use inspection. Failure to inspect snorkels, and any changes in technical parameters that fail to meet requirements, could significantly reduce diving and escape effectiveness, and could even endanger the user's life.

[0003] Most existing testing equipment can only perform breathing tests or blowing tests, and cannot have both functions at the same time. The test is performed by directly connecting the cylinder to the breathing tube, which deviates from the actual usage status during testing and is not compatible with all products. In addition, the instrument itself will also generate breathing resistance during the test, which has a certain impact on the test results. Summary of the Invention

[0004] In view of the above problems, the present application is proposed to provide a breathing / blowing airflow resistance testing device that overcomes the above problems or at least partially solves the above problems, comprising:

[0005] A breathing / blowing airflow resistance test device comprises: a control module, a test module and a cabinet; the control module is electrically connected to the test module; the cabinet comprises an upper cabinet and a lower cabinet;

[0006] The test module includes: a servo motor, a cylinder, a head mold and a float flowmeter; the servo motor and the cylinder are arranged in the lower cabinet; the head mold is arranged on the surface of the lower cabinet;

[0007] The float flowmeter is located on the side panel of the cabinet; the servo motor is electrically connected to the cylinder; the cylinder is connected to the head mold and the float flowmeter, and the channel connecting the cylinder, the head mold and the float flowmeter is a Y-shaped pipe.

[0008] Preferably, the control module includes: a touch screen, an emergency stop button, a buzzer, a start button and a power switch; the components of the control module are all located on the same side panel of the upper cabinet.

[0009] Preferably, an electric ball valve is provided between the bifurcation of the Y-shaped pipe and the cylinder and the float flowmeter respectively; the electric ball valve is electrically connected to the control module.

[0010] Preferably, the test module further comprises: a pressure reducing valve, a two-piece assembly and a manual sliding valve; the pressure reducing valve, the two-piece assembly and the manual sliding valve are located in the upper cabinet; the float flowmeter is connected to the pressure reducing valve, the two-piece assembly and the manual sliding valve in sequence;

[0011] When the test type is the air blowing resistance test, the manual sliding valve is connected to the external air source.

[0012] Preferably, the two-piece assembly includes: a filter, a pressure regulator and an oil mist collector; the filter, the pressure regulator and the oil mist collector are connected in sequence; the pressure regulator is connected to the manual sliding valve; and the oil mist collector is connected to the float flowmeter.

[0013] Preferably, the headform is provided with a respirator and a pressure sensor; the respirator is provided at the mouth and nose of the headform, and the pressure sensor is provided inside the headform; the pressure sensor is electrically connected to the control module.

[0014] Preferably, the style of the head mold is changed according to the target population of the sample to be tested.

[0015] Preferably, casters and foot cups are provided under the cabinet.

[0016] A breathing / blowing airflow resistance testing method applied to any of the above-mentioned airflow resistance testing devices comprises:

[0017] Install the corresponding head model according to the target population of the sample to be tested;

[0018] activating the device to measure the respiratory resistance generated by the device itself and the respiratory tract of the headform, and inputting the measured respiratory resistance into the original peak value of the device;

[0019] Select the test type, set the test frequency, number of cycles and upper and lower limits of the alarm;

[0020] Mounting the sample to be tested on the headform;

[0021] When the test result exceeds the set upper and lower alarm limits, the device will sound an alarm;

[0022] If there is no alarm and the device is operating normally, directly read the test resistance peak result.

[0023] Preferably, the test types include respiratory resistance test and blowing resistance test; the test device changes the test type by replacing the air source.

[0024] Preferably, when the test type is selected as the respiratory air resistance test, the air source is the air cylinder provided with the device.

[0025] Preferably, when the test type is selected as the air blowing resistance test, the air source is an external air source.

[0026] This application has the following advantages:

[0027] In an embodiment of the present application, compared with the problems in the prior art such as poor compatibility, inability to simultaneously have both breathing test and blowing test functions, and inaccurate test results, the present application provides a breathing / blowing airflow resistance testing device, which specifically includes: a control module, a test module and a cabinet; the control module is electrically connected to the test module; the cabinet includes an upper cabinet and a lower cabinet; the test module includes: a servo motor, a cylinder, a head mold and a float flowmeter; the servo motor and the cylinder are arranged in the lower cabinet; the head mold is arranged on the surface of the lower cabinet; the float flowmeter is located on the side panel of the cabinet; the servo motor is electrically connected to the cylinder; the cylinder is connected to the head mold and the float flowmeter, and the channel connecting the cylinder, the head mold and the float flowmeter is a Y-shaped pipe. By adopting the head model specified in the standard and testing the breathing resistance of the head model itself before testing, the initial breathing resistance is corrected. At the same time, the use of both external air source and built-in air cylinder to generate air source solves the problems of poor compatibility of existing equipment, inability to have both breathing test and blow test functions at the same time, and inaccurate test results, thereby achieving more accurate measurement results and more extensive testing functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 1 is a schematic structural diagram of a breathing / blowing airflow resistance testing device provided in one embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of an air path of a breathing / blowing airflow resistance testing device provided in one embodiment of the present application;

[0031] Figure 3 This is a flowchart of the steps of a breathing / blowing airflow resistance testing method provided in one embodiment of the present application.

[0032] The figure numbers in the drawings of the specification are as follows: 1. Float flowmeter; 2. Pressure regulator; 3. Head mold; 4. Respirator; 5. Touch screen; 6. Emergency stop button; 7. Buzzer; 8. Start button; 9. Power switch; 10. Rack; 11. Cylinder; 12. Servo motor; 13. Caster; 14. Sample to be tested; 15. Pressure sensor; 16. Electric ball valve; 17. Pressure reducing valve; 18. Oil mist collector; 19. Filter; 20. Manual slide valve; 21. External air source. DETAILED DESCRIPTION

[0033] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0034] Through analysis of existing technologies, the inventors discovered that most existing testing equipment uses a pneumatic cylinder connected to the breathing tube for testing. This connection is not tight enough during testing and fails to simulate the actual state of the breathing tube in use. Any bending of the breathing tube can affect the test results. Furthermore, most existing testing equipment uses a barometer connected directly to the breathing tube for testing. Due to the wide variety of products on the market, this is not applicable to all products, resulting in poor compatibility. Furthermore, the equipment itself creates airflow resistance, which can affect the test results. These impacts can lead to inaccurate test results.

[0035] Reference Figure 1-2 , shows a breathing / blowing airflow resistance test device provided by an embodiment of the present application, comprising: a control module, a test module and a cabinet; the control module is electrically connected to the test module; the cabinet comprises an upper cabinet and a lower cabinet;

[0036] The test module includes: a servo motor 12, a cylinder 11, a head mold 3 and a float flowmeter 1; the servo motor 12 and the cylinder 11 are arranged in the lower cabinet; the head mold 3 is arranged on the surface of the lower cabinet; the float flowmeter 1 is located on the side panel of the cabinet; the servo motor 12 is electrically connected to the cylinder 11; the cylinder 11 is connected to the head mold 3 and the float flowmeter 1, and the channel connecting the cylinder 11, the head mold 3 and the float flowmeter 1 is a Y-shaped pipe.

[0037] In an embodiment of the present application, compared with the problems in the prior art such as poor compatibility, inability to simultaneously have both breathing test and blowing test functions, and inaccurate test results, the present application provides a breathing / blowing airflow resistance testing device, which specifically includes: a control module, a test module and a cabinet; the control module is electrically connected to the test module; the cabinet includes an upper cabinet and a lower cabinet; the test module includes: a servo motor 12, a cylinder 11, a head mold 3 and a float flowmeter 1; the servo motor 12 and the cylinder 11 are arranged in the lower cabinet; the head mold 3 is arranged on the surface of the lower cabinet; the float flowmeter 1 is located on the side panel of the cabinet; the servo motor 12 is electrically connected to the cylinder 11; the cylinder 11 is connected to the head mold 3 and the float flowmeter 1, and the channel connecting the cylinder 11 with the head mold 3 and the float flowmeter 1 is a Y-shaped pipe. By adopting the head mold 3 specified in the standard and testing the breathing resistance of the head mold 3 itself before testing, the initial breathing resistance is corrected. At the same time, the two methods of generating air sources, namely, an external air source 21 and a built-in air cylinder 11, are used to solve the problems of poor compatibility of existing equipment, inability to simultaneously have both breathing test and blowing test functions, and inaccurate test results, thereby achieving more accurate measurement results and more extensive testing functions.

[0038] Next, a breathing / blowing airflow resistance testing device in this exemplary embodiment will be further described.

[0039] In one embodiment of the present application, the control module includes a touch screen 5, an emergency stop button 6, a buzzer 7, a start button 8, and a power switch 9. All components of the control module are located on the same side panel of the upper cabinet. The touch screen 5 allows you to select the test type, set the test frequency, number of cycles, and upper and lower alarm limits. Once the settings are complete, press the start button 8 to begin the test. If the test result exceeds the set upper and lower alarm limits, the buzzer 7 will sound an alarm, and the emergency stop button 6 must be pressed to terminate the test.

[0040] In one embodiment of the present application, an electric ball valve 16 is provided between the bifurcation of the Y-shaped pipe, the cylinder 11, and the float flowmeter 1; each electric ball valve 16 is electrically connected to the control module. The control module controls the test type via the electric ball valve 16. When the test type is a breath test, the electric ball valve 16 adjacent to the cylinder 11 opens, while the electric ball valve 16 adjacent to the float flowmeter 1 closes. When the test type is an air blow test, the electric ball valve 16 adjacent to the cylinder 11 closes, while the electric ball valve 16 adjacent to the float flowmeter 1 opens.

[0041] It should be noted that the float flowmeter 1 is used to measure the pressure in the pipeline for the air blowing test.

[0042] In one embodiment of the present application, the test module further includes: a pressure reducing valve 17, a two-piece assembly, and a manual sliding valve 20; the pressure reducing valve 17, the two-piece assembly, and the manual sliding valve 20 are located in the upper cabinet; the float flowmeter 1 is sequentially connected to the pressure reducing valve 17, the two-piece assembly, and the manual sliding valve 20; the pressure reducing valve 17 can stabilize the gas source pressure, keep the gas source in a constant state, and reduce damage to hardware such as valves due to sudden changes in the gas source pressure;

[0043] When the test type is in the blow resistance test, the hand slide valve 20 is connected to the external air source 21. The hand slide valve 20 acts as an air source switch in the pipeline. When the air source is closed, the air pressure in the pipeline will be exhausted.

[0044] In one embodiment of the present application, the two-piece assembly includes: a filter 19, a pressure regulator 2, and an oil mist collector 18; the filter 19, the pressure regulator 2, and the oil mist collector 18 are connected in sequence; the pressure regulator 2 is connected to the manual sliding valve 20; and the oil mist collector 18 is connected to the float flowmeter 1. The filter 19 is used to clean the air source and can filter moisture in the compressed air to prevent moisture from entering the device along with the gas. The pressure regulating valve can limit the maximum pressure in the pipeline, thereby improving the economy and safety of the system while ensuring reliable operation of the system. The oil mist collector 18 can lubricate the moving parts of the body and can lubricate parts that are inconvenient to add lubricating oil, thereby extending the service life of the device.

[0045] In one embodiment of the present application, the headform 3 is equipped with a respirator 4 and a pressure sensor 15. The respirator 4 is positioned at the nose and mouth of the headform 3, and the pressure sensor 15 is located within the headform 3. The pressure sensor 15 is electrically connected to the control module. The pressure sensor 15 can measure breathing resistance in the range of 0.01 kPa to 50 kPa. The headform 3 can simulate real breathing through the respirator 4 and measure breathing resistance through the pressure sensor 15.

[0046] In one embodiment of the present application, the style of the head mold 3 is changed according to the target population of the sample 14 to be tested; the head mold 3 adopts the standard European adult and child mannequin 3 to simulate actual usage and can be used for breathing tubes of different types and sizes.

[0047] In one embodiment of the present application, casters 13 and foot cups are provided under the cabinet. The height of the casters 13 is higher than the foot cups. When the test device does not need to be moved, the casters 13 can be folded and the foot cups can be used to support the test device.

[0048] Reference Figure 3, shows a breathing / blowing airflow resistance testing method provided by an embodiment of the present application and applied to any of the airflow resistance testing devices described above, comprising:

[0049] S310, installing the corresponding head mold 3 according to the target population of the sample 14 to be tested;

[0050] S320: Start the device to measure the respiratory resistance generated by the device itself and the respiratory tract of the head model 3, and input the measured respiratory resistance into the original peak value of the device;

[0051] S330, select the test type, set the test frequency, number of cycles and upper and lower limits of the alarm;

[0052] S340, installing the sample 14 to be tested on the head mold 3;

[0053] S350: When the test result exceeds the set upper and lower alarm limits, the device will sound an alarm;

[0054] S360: If there is no alarm and the device is operating normally, directly read the test resistance peak result.

[0055] As described in step S310 , a corresponding head mold 3 is installed according to the target population of the sample 14 to be tested.

[0056] The corresponding head mold 3 is installed according to the target population of the sample 14 to be tested; the head mold 3 adopts the European adult and child dummy head mold 3 specified in the standard, simulates the actual usage, and can be used for breathing tubes of different types and sizes.

[0057] As described in step S320, the device is started to measure the respiratory resistance generated by the device itself and the respiratory tract of the head model 3, and the measured respiratory resistance is input into the original peak value of the device.

[0058] By inputting the measured respiratory resistance on the touch screen 5, the testing device will automatically correct the resistance value generated by the instrument itself.

[0059] As described in step S330, select the test type, set the test frequency, number of cycles, and upper and lower limits of the alarm.

[0060] The test types include respiratory resistance test and blowing resistance test; the testing device changes the test type by replacing the air source; the test frequency can be the breathing frequency or the blowing frequency, wherein the blowing frequency can be 0; when the blowing frequency is 0, a continuous blowing test will be performed.

[0061] As described in step S340 , the sample 14 to be tested is mounted on the head mold 3 .

[0062] The sample to be tested 14 is connected to the respirator 4 of the head mold 3 .

[0063] As described in step S350, when the test result exceeds the set upper and lower alarm limits, the device will issue an alarm.

[0064] When the test result exceeds the set upper and lower alarm limits, the buzzer 7 will sound an alarm to remind the operator, and the touch screen 5 will also display an alarm prompt. The operator can terminate the test by pressing the emergency stop button 6.

[0065] As described in step S360, if there is no alarm and the device operates normally, the test resistance peak result is directly read.

[0066] If the test device does not give an alarm and operates normally to complete the test, the operator can see the test resistance peak result on the touch screen 5 .

[0067] In one embodiment of the present application, the specific process of "the testing device changes the test type by replacing the gas source" can be further explained in combination with the following description.

[0068] When the test type is selected as the respiratory resistance test, the gas source is the gas cylinder 11 provided with the device.

[0069] When the test type is selected as the air blowing resistance test, the air source is the external air source 21 .

[0070] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0071] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0072] The above is a detailed introduction to a breathing / blowing airflow resistance testing device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A breathing / blowing airflow resistance test method, characterized in that: The device includes: a control module, a test module and a cabinet; the control module is electrically connected to the test module; the cabinet includes an upper cabinet and a lower cabinet; The test module includes: a servo motor, a cylinder, a head mold and a float flowmeter; the servo motor and the cylinder are arranged in the lower cabinet; the head mold is arranged on the surface of the lower cabinet; the float flowmeter is located on the side panel of the cabinet; the servo motor is electrically connected to the cylinder; the cylinder is connected to the head mold and the float flowmeter, and the channel connecting the cylinder, the head mold and the float flowmeter is a Y-shaped pipe; the test module also includes: a pressure reducing valve, a two-piece and a manual sliding valve; the pressure reducing valve, the two-piece and the manual sliding valve are located in the upper cabinet; the float flowmeter is connected to the pressure reducing valve, the two-piece and the manual sliding valve in sequence; when the test type is the blowing resistance test, the manual sliding valve is connected to the external air source; The method comprises: Install the corresponding head model according to the target population of the sample to be tested; activating the device to measure the respiratory resistance generated by the device itself and the respiratory tract of the headform, and inputting the measured respiratory resistance into the original peak value of the device; Select the test type, set the test frequency, number of cycles, and upper and lower alarm limits; the test types include respiratory resistance test and blow resistance test; the test device changes the test type by changing the gas source; when the test type is selected as the respiratory resistance test, the gas source is the device's own gas cylinder; when the test type is selected as the blow resistance test, the gas source is an external gas source; Mounting the sample to be tested on the headform; When the test result exceeds the set upper and lower alarm limits, the device will sound an alarm; If there is no alarm and the device is operating normally, directly read the test resistance peak result.

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