Measuring device

Abstract

The utility model discloses measuring equipment. The measuring equipment comprises an air exhaust component, a main body component and optical detection equipment, the main body part is provided with a first connector and a second connector, the first connector is used for being connected with an air exhaust opening of the atomization device, and the second connector is connected with the air exhaust part; the main body part is further provided with a first main flow channel, a second main flow channel and more than two branch flow channels, the two ends of each branch flow channel are communicated with the first main flow channel and the second main flow channel respectively, the first connector is communicated with the first main flow channel, and the second connector is communicated with the second main flow channel; the optical detection equipment is arranged on at least one sub-runner and is used for measuring the particle size and distribution information of particles of aerosol flowing through the sub-runners. The measuring equipment can improve the accuracy of aerosol measurement of the atomization device, and enables the measurement to have reproducibility.

Description

Technical Field

[0001] This application relates to the technical field of atomization devices, and particularly to a measuring device. Background Art

[0002] The atomization device generates aerosol by heating the atomization matrix. The size of the particulate matter in the aerosol directly affects the user's sensory experience. Therefore, during the production process of the atomization device, it is necessary to measure the particle size and particle size distribution of the aerosol generated by atomization. Currently, the commonly used measurement adopts laser particle size analysis technology, which has problems of poor accuracy of measurement results or inability to repeat tests in practical applications. Summary of the Utility Model

[0003] The purpose of this application is to provide a measuring device for measuring the aerosol generated by an atomization device. This measuring device can improve the accuracy of measuring the aerosol generated by the atomization device and make the measurement reproducible.

[0004] To solve the above technical problems, this application provides a measuring device for measuring the aerosol generated by an atomization device. This measuring device includes an air extraction component, a main body component, and an optical detection device;

[0005] The main body component has a first interface and a second interface. The first interface is used to connect to the air extraction port of the atomization device, and the second interface is connected to the air extraction component;

[0006] The main body component also has a first main flow channel, a second main flow channel, and more than two shunt channels. The two ends of the shunt channel are respectively communicated with the first main flow channel and the second main flow channel. The first interface is communicated with the first main flow channel, and the second interface is communicated with the second main flow channel;

[0007] At least one of the shunt channels is provided with the optical detection device, and the optical detection device is used to measure the particle size and distribution information of the particulate matter of the aerosol flowing through the shunt channel.

[0008] Through the structural setting of the main body component, this measuring device shunts the aerosol generated by the atomization device. After shunting, the number of particulate matters in the aerosol in each shunt channel decreases. When the optical detection component measures the aerosol in the shunt channel, it can reduce or avoid multiple scattering caused by excessive particulate matters or the interaction of the detection laser between multiple particulate matters, thereby improving the accuracy of detecting the particle size and distribution of the particulate matter in the aerosol.

[0009] In addition, by using the air extraction component to suck the atomization device, the suction flow rate can be precisely controlled, so that the test of the atomization device has reproducibility. In practical applications, the same atomization device can be repeatedly measured under the same test conditions to ensure the accuracy of the measurement results.

[0010] In one embodiment, the diameter of the shunt channels is not less than the diameter of the first main channel; among the shunt channels, at least some of the shunt channels have different diameters, and the shunt channels with larger diameters are arranged closer to the first interface than those with smaller diameters.

[0011] In one embodiment, the shunt channels are arranged in parallel and have the same length.

[0012] In one embodiment, the shunt channels are arranged in one direction and are all located on the same side of the first interface.

[0013] In one embodiment, the optical detection device is provided on at least one of the shunt channels with a smaller diameter.

[0014] In one embodiment, the measuring device further includes at least one switching valve, and at least one of the switching valves is arranged at a position of the first main channel close to the first interface.

[0015] In one embodiment, the measuring device includes two or more of the switching valves, and at least some of the inlet ends of the shunt channels are provided with the switching valves.

[0016] In one embodiment, the switching valve is a solenoid valve or an electrically controlled valve.

[0017] In one embodiment, the measuring device further includes a collection component, and the collection component is connected to the outlet of the air extraction component.

[0018] In one embodiment, the measuring device further includes a control module, the control module is communicatively connected to the optical detection device and the air extraction component, and the control module is used to control the suction flow rate of the air extraction component; the control module is further used to store and analyze the detection results of the optical detection device. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the measuring device in the first embodiment provided by the present application;

[0020] Figure 2 It is a schematic structural diagram of the measuring device in the second embodiment provided by the present application;

[0021] Figure 3 It is a schematic structural diagram of the measuring device in the third embodiment provided by the present application.

[0022] Description of the reference numerals in the drawings:

[0023] Air extraction component 10, main body component 20, first interface part 201, second interface part 202, first main flow channel 21, second main flow channel 22, first branch flow channel 231, second branch flow channel 232, third branch flow channel 233, fourth branch flow channel 234, optical detection device 30, collection component 40, first switching valve 51, second switching valve 52. Detailed implementation manners

[0024] The present application will be further described in detail below with reference to the drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0025] In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. The terms "including" and "having" in the embodiments of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0026] Referring to "embodiments" herein means that a specific feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] The atomizing device generates an aerosol by heating an atomizing matrix. The aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. The size of the particulate matter in the aerosol directly affects their behavior in the human respiratory tract. Smaller particulate matter may be more likely to penetrate into the alveoli, while larger particulate matter may be retained in the upper respiratory tract. Therefore, by testing the particle size of the particulate matter, the inhalation efficiency of the aerosol on the human respiratory system can be evaluated. To measure the particle size of the aerosol generated by an electronic cigarette, the commonly used technical method at present is to use laser particle size analysis technology, which can detect and analyze the size distribution of particles by scattering laser light. However, there are the following problems in the application of this technical method: First, the concentration of the aerosol may interfere with the laser scattering test. Specifically, the principle of the laser particle size analysis technology is to use laser light to irradiate the particulate matter and generate scattered light, and the size and distribution of the particulate matter are determined by analyzing the intensity and time delay of the scattered light signal. If the concentration of the aerosol is too high and there are more particulate matters in the test sample, it may cause multiple scattering after the laser irradiates the particulate matter, or the particulate matters interact with each other, thus affecting the accuracy of the test results; Second, due to the differences between different models and brands of atomizing devices, the aerosol generating device cannot generate a relatively stable and representative aerosol sample in a controllable manner, affecting the reproducibility of its measurement.

[0028] Therefore, the present application provides a measuring device for an atomizing device. The structural arrangement of the measuring device can improve the accuracy of aerosol measurement of the atomizing device and make the measurement reproducible.

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the measuring device in the first embodiment provided by the present application.

[0031] The measuring device provided in this embodiment is used for an atomizing device. The measuring device includes an air extraction component 10, a main body component 20, and an optical detection device 30.

[0032] The main body component 20 has a first interface 201 and a second interface 202. The first interface 201 is used to connect to the air extraction port of the atomizing device, and the second interface 202 is used to connect to the air extraction component 10.

[0033] The main body component 20 further has a first main flow channel 21, a second main flow channel 22, and two or more sub-flow channels. Both ends of each sub-flow channel are respectively connected to the first main flow channel 21 and the second main flow channel 22. The first interface 201 is connected to the first main flow channel 21, and the second interface 202 is connected to the second main flow channel 22.

[0034] An optical detection device 30 is provided on at least one sub-flow channel of the main body component 20; the optical detection device 30 is used to detect the particle size and distribution information of the aerosol particles flowing through the sub-flow channel.

[0035] When the measuring device is in use, the atomizing device is sucked by the air extraction component 10, and the aerosol generated by the atomizing device can be inhaled into the main body component 20. The aerosol flows into the first main flow channel 21 through the first interface 201. During the process of flowing through the first main flow channel 21, it can flow into each sub-flow channel connected to the first main flow channel 21 respectively, and finally flow out from each sub-flow channel to the second main flow channel 22. Due to the flow splitting effect of the sub-flow channels, the number of aerosol particles in each sub-flow channel decreases. Through the detection of the optical detection component 30 provided on at least one sub-flow channel, the particle size and distribution information of the aerosol particles in the sub-flow channel can be obtained. After obtaining the particle size and distribution information of the aerosol particles in at least one sub-flow channel, the particle size and distribution information of the aerosol particles in all the aerosol sucked from the air extraction port of the atomizing device are calculated by the flow rate ratio between different sub-flow channels.

[0036] Through the structural setting of the main body component 20, the measuring device splits the aerosol generated by the atomizing device. After splitting, the number of aerosol particles in each sub-flow channel decreases. When the optical detection component 30 measures the aerosol in the sub-flow channel, it can reduce or avoid multiple scattering caused by excessive particles or the interaction of the detection laser between multiple particles, thereby improving the accuracy of detecting the particle size and distribution information of the aerosol particles.

[0037] In addition, by sucking the atomizing device through the air extraction component 10, the suction flow rate can be accurately controlled. For different models or types of atomizing devices, a relatively stable and controllable aerosol sample can be generated through the suction control of the air extraction component 10, so that the test of the atomizing device has reproducibility. In practical applications, the same atomizing device can be repeatedly measured under the same test conditions to ensure the accuracy of the measurement results.

[0038] In a specific implementation, the optical detection device 30 can be a dynamic light scattering particle size analyzer, which utilizes the light scattering phenomenon to measure the size of particulate matter. During detection, the aerosol sample is placed in the optical path of the dynamic light scattering particle size analyzer. In this example, the aerosol sample is the aerosol flowing through the shunt channel provided with the optical detection device 30. The optical detection device 30 can emit a laser towards the aerosol sample. After the laser interacts with the particulate matter in the aerosol sample, scattered light is generated. The detector of the optical detection device 30 collects the scattered light signal. By analyzing the intensity and time delay of the scattered light signal, the particle size and distribution information of the particulate matter can be determined. Among them, larger particulate matter will result in higher scattered light intensity and shorter time delay, while smaller particulate matter is the opposite. The particle size and distribution information of the particulate matter include the particle size of the particulate matter in the aerosol sample, and the number of particulate matter within the same particle size range, etc.

[0039] In some implementation manners, the diameter of each shunt channel is set to be not less than the diameter of the first main channel 21. Among the shunt channels, at least some of the shunt channels have different diameters, and the shunt channels with larger diameters are arranged closer to the first interface 201 than those with smaller diameters.

[0040] After the above setting, it can play a certain dilution role in the aerosol entering the shunt channel, which is beneficial to reducing the interference of the aerosol concentration on the detection.

[0041] In some implementation manners, the shunt channels of the main body component 20 are arranged in parallel, and the lengths of the shunt channels are the same. In this way, it is beneficial to ensure that the flow states of the aerosol in the shunt channels are consistent. When inferring the particle size and distribution of particulate matter in other shunt channels based on the detection results of the shunt channel provided with the optical detection component 30 later, the accuracy is relatively high.

[0042] In a specific implementation, the shunt channels are arranged in one direction, and all the shunt channels are located on the same side of the first interface 201. In this way, it is beneficial to ensure the consistency of the flow states of the aerosol in the shunt channels.

[0043] In some implementation manners, the optical detection device 30 is arranged on at least one shunt channel with a smaller diameter. Since the shunt channel with a smaller diameter is relatively far from the first interface 201, after sucking the atomizing device, the flow rate of the aerosol flowing into the shunt channel with a smaller diameter is relatively small, and the number of particulate matter in it is relatively small. Arranging the optical detection device 30 on the shunt channel with a smaller diameter can effectively improve the accuracy of the detection result.

[0044] Figure 1In the illustrated example, the main body 20 is provided with three shunt channels, which are respectively called the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233. The first main channel 21 and the second main channel 22 of the main body 20 are arranged in parallel, and the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233 are vertically arranged between the first main channel 21 and the second main channel 22. In this way, the lengths of the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233 are the same.

[0045] Among them, the first shunt channel 231 and the second shunt channel 232 are set to have the same diameter, and both are larger than the diameter of the third shunt channel 233. The diameter of the third shunt channel 233 is the smallest among the three shunt channels. Compared with the other shunt channels, the third shunt channel 233 is set to be the farthest from the first interface 201.

[0046] In Figure 1 the illustrated orientation, the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233 are all located on the right side of the first interface 201.

[0047] An optical detection component 30 is provided on the third shunt channel 233.

[0048] As Figure 1 shown, after the air extraction component 10 sucks the atomization device, the aerosol discharged from the air extraction port of the atomization device enters the first main channel 21 through the first interface 201. When flowing along the first main channel 21, part of the aerosol flows into the first shunt channel 231, and then part flows into the second shunt channel 232. Finally, the remaining aerosol flows into the third shunt channel 233. The optical detection device 30 provided on the third shunt channel 233 can detect the particle size and distribution of the particles of the aerosol flowing through the third shunt channel 233. Figure 1 The black arrow in

[0049] indicates the flow path of the aerosol after sucking the atomization device.

[0050] Among them, the flow rate of the aerosol in each shunt channel can be determined according to the relevant formulas of fluid mechanics. Specifically, according to the law of conservation of flow rate, the total flow rate flowing through the first interface 201 of the main body component 20 is equal to the sum of the flow rates of the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233, that is, S = Q a +Q b +Q c , where S is the total flow rate flowing through the first interface 201, and Q a 、Q b and Q c are the flow rates flowing through the first shunt channel 231, the second shunt channel 232, and the third shunt channel 233 respectively.

[0051] Assuming that the flow is laminar, according to the Hagen-Poiseuille law, for laminar flow, the flow rate is directly related to the fourth power of the pipe diameter and inversely proportional to the pipe length and flow resistance. The specific formula is as follows:

[0052] Q = (π * ΔP * r^4) / (8 * μ * L);

[0053] where Q is the flow rate, ΔP is the pressure drop, r is the pipe radius, μ is the dynamic viscosity of the gas, and L is the pipe length.

[0054] In Figure 1 the example shown, the shunt channels are arranged in parallel and have the same length. It can be considered that the pressure drops of the shunt channels are the same. Therefore, it can be obtained that:

[0055] ;

[0056] where D a 、L a are the diameter and length of the first shunt channel 231 respectively, D b 、L b are the diameter and length of the second shunt channel 232 respectively, D c 、L c are the diameter and length of the third shunt channel 233 respectively.

[0057] It can be understood that the length and diameter of each shunt channel are known parameters. The total flow rate S can be determined by the suction power of the suction component 10, etc. Thus, the flow rate of each shunt channel can be determined according to the above two formulas.

[0058] In specific implementation, the measuring device further includes at least one switching valve, and at least one switching valve is arranged at a position of the first main channel 21 close to the first interface 201.

[0059] In Figure 1In the illustrated example, a first switching valve 51 is provided on the first main runner 21, and the first switching valve 51 is close to the first interface 201. When testing is required, the first switching valve 51 can be opened, and when testing is not required, the first switching valve 51 can be closed to ensure that no external impurities enter the interior of the main body component 20.

[0060] In some implementation manners, the measuring device further includes a collecting component 40, and the collecting component 40 is connected to the outlet of the air extraction component 10. After suction, the aerosol flowing through each shunt runner can be collected to avoid direct discharge to the outside.

[0061] The collecting component 40 is specifically a container with a cavity.

[0062] In a specific implementation, the air extraction component 10 can be an adjustable flow suction pump for adjustment according to different atomizing devices.

[0063] In some implementation manners, the measuring device further includes a control module. The control module can be communicatively connected to the optical detection device 30 and the air extraction device 10. The suction flow rate of the air extraction component is controlled through the control module, and the control module can also be used to store and analyze the detection results of the optical detection device 30.

[0064] In Figure 1 the illustrated example, an optical detection component 30 is provided only on one shunt runner. In other embodiments, optical detection components 30 can also be provided on multiple shunt runners. For example, Figure 2 in the illustrated example, the main body component 20 of the measuring device is provided with four shunt runners arranged in parallel and having the same length, namely a first shunt runner 231, a second shunt runner 232, a third shunt runner 233, and a fourth shunt runner 234. Among them, the first shunt runner 231 and the second shunt runner 232 have the same diameter, the diameter of the third shunt runner 233 is smaller than that of the second shunt runner 232, the diameter of the fourth shunt runner 234 is smaller than that of the third shunt runner 233, the distance between the first shunt runner 231 and the first interface 201 is the closest, followed by the second shunt runner 232, then the third shunt runner 233, and the distance between the fourth shunt runner 234 and the first interface 201 is the farthest. Optical detection devices 30 are provided on both the third shunt runner 233 and the fourth shunt runner 234.

[0065] After such a setting, the detection results can be corrected by comparing the detection results of the third shunt runner 233 and the fourth shunt runner 234.

[0066] In other implementation manners, optical detection devices 30 can also be provided on each shunt runner.

[0067] In addition, in other implementation manners, switching valves can also be provided on some shunt runners. For example, in Figure 3In the illustrated example, second switching valves 52 are provided on both the first flow divider channel 231 and the second flow divider channel 232, and the second switching valves 52 are located at the inlet ends of the flow divider channels. After such an arrangement, part of the flow divider channels can be closed according to the detection requirements of different atomization devices or the suction flow rate of the suction member 10, so as to improve the applicable range of the measuring device and avoid setting up dedicated measuring devices for different atomization devices. Arranging the second switching valves 52 close to the inlet ends of the flow divider channels can prevent the corresponding flow divider channels from affecting the flow state of the aerosol when not in use, so as to ensure the accuracy of the measurement results.

[0068] When specifically setting, the aforementioned first switching valve 51 and second switching valve 52 can both adopt solenoid valves or electrically controlled valves to facilitate automatic control.

[0069] In this text, specific examples are used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A measuring device for measuring an aerosol generated by an atomizing device, characterized in that, It includes an air extraction component, a main body component and an optical detection device; The main body component has a first interface and a second interface. The first interface is used to connect to the air extraction port of the atomization device, and the second interface is connected to the air extraction component; The main body component also has a first main flow channel, a second main flow channel and more than two diversion channels. The two ends of each diversion channel are respectively communicated with the first main flow channel and the second main flow channel. The first interface is communicated with the first main flow channel, and the second interface is communicated with the second main flow channel; At least one of the diversion channels is provided with the optical detection device, and the optical detection device is used to measure the particle size and distribution information of the particulate matter of the aerosol flowing through the diversion channel.

2. The measuring device according to claim 1, wherein, The diameter of the diversion channel is not less than the diameter of the first main flow channel; among the diversion channels, at least part of the diversion channels have different diameters, and the diversion channels with larger diameters are arranged closer to the first interface than the diversion channels with smaller diameters.

3. The measuring device according to claim 2, characterized in that, The diversion channels are arranged in parallel, and the lengths of the diversion channels are the same.

4. The measuring device according to claim 3, characterized in that The diversion channels are arranged in one direction, and all the diversion channels are located on the same side of the first interface.

5. The measuring device according to any one of claims 2 to 4, characterized in that, The optical detection device is provided on at least one of the diversion channels with a smaller diameter.

6. The measuring device according to any one of claims 1-4, characterized in that, The measuring device also includes at least one switching valve, and at least one of the switching valves is arranged at a position of the first main flow channel close to the first interface.

7. The measuring device according to claim 6, characterized in that, The measuring device includes two or more of the switching valves, and at least part of the inlet ends of the diversion channels are provided with the switching valves.

8. The measuring device according to claim 6, characterized in that, The switching valve is a solenoid valve or an electrically controlled valve.

9. The measuring device according to any one of claims 1-4, characterized in that, The measuring device also includes a collection component, and the collection component is connected to the outlet of the air extraction component.

10. The measuring device according to any one of claims 1 to 4, characterized in that, The measuring device also includes a control module, and the control module is communicatively connected to the optical detection device and the air extraction component. The control module is used to control the suction flow rate of the air extraction component; the control module is also used to store and analyze the detection results of the optical detection device.

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