Aerosol collector and cold trap device

Abstract

The utility model provides an aerosol collector and a cold trap capturing device, including an air guide pipe, an absorption bottle and a condenser, the air guide pipe includes an air outlet outer tube and an air inlet inner tube, the air inlet inner tube is partially inserted into the air outlet outer tube, and the air outlet end of the air inlet inner tube extends from the air inlet of the air outlet outer tube; the absorption bottle is tightly fitted to the air inlet of the air outlet outer tube, and the air outlet end of the air inlet inner tube is accommodated in the absorption bottle; the condenser is sleeved on the outside of the absorption bottle, and the gap space between the condenser and the absorption bottle is used to accommodate condensate. In the embodiment of the utility model, by accommodating the condensate in the condenser, the condenser is sleeved on the outside of the absorption bottle, and the ratio of the effective heat exchange area between the condenser and the absorption bottle to the ineffective heat exchange area between the condenser and the outside is significantly smaller than the ratio of the heat exchange area of ​​the thermos cup, thereby reducing the additional heat loss in the condenser, thereby enabling the absorption bottle in the condenser to maintain a low temperature, thereby improving the capture efficiency of the aerosol.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic cigarette release capture, and in particular relates to an aerosol collector and a cold trap capture device. Background Art

[0002] With the rapid development of e-cigarettes, the safety of the components in e-cigarette emissions has received attention, and the technical requirements for detecting the components in e-cigarette emissions have also increased accordingly.

[0003] At present, the main methods for collecting e-cigarette emissions are Cambridge filters or solvent absorption through traps. Cambridge filters can capture particulate matter in the smoke, but there are still a small amount of gas phase components that cannot be completely captured, and Cambridge filters require subsequent processing steps such as oscillation extraction. Long-term processing may cause deviations in component results, which is not conducive to the study of e-cigarette emissions. Conventional solvent absorption can only capture certain specific components.

[0004] The low-temperature capture method can capture different volatile components in electronic cigarette emissions, and can even capture all smoke components. However, it is difficult to achieve low-temperature conditions in the process of capturing aerosols in existing capture trap devices; or the capture trap is placed in a thermos cup and an ice salt bath is used to achieve low-temperature conditions. However, in this process, since the thermos cup is open, the temperature condition is difficult to maintain, and it is difficult to maintain low-temperature conditions throughout the process of capturing aerosols, which reduces the capture efficiency. Utility Model Content

[0005] The embodiments of the utility model aim to provide an aerosol collector and a cold trap capturing device to solve the technical problem in the prior art that low temperature cannot be achieved throughout the suction process, resulting in low capturing efficiency.

[0006] In order to solve the above technical problems, in the first aspect, the utility model provides an aerosol collector, comprising: an air guide pipe, comprising an air outlet outer tube and an air inlet inner tube, wherein the air inlet inner tube is partially passed through the air outlet outer tube, and the air outlet end of the air inlet inner tube extends out from the air inlet of the air outlet outer tube; an absorption bottle, which is tightly fitted to the air inlet of the air outlet outer tube, and the air outlet end of the air inlet inner tube is accommodated in the absorption bottle; a condenser, which is sleeved on the outside of the absorption bottle, and the gap space between the condenser and the absorption bottle is used to accommodate condensate.

[0007] Optionally, the condenser is provided with an opening, and the opening is used to achieve a detachable connection between the absorption bottle and the condenser.

[0008] Optionally, the absorption bottle is provided with a bottle mouth, and a boss is provided along the outer side of the bottle mouth, and the boss is used to abut against the side wall of the opening position.

[0009] Optionally, the absorption bottle is provided with a bottle mouth, a first annular slope is provided on the outer side of the bottle mouth, and a second annular slope matching with the first annular slope is provided on the inner side of the opening.

[0010] Optionally, the first annular bevel and the second annular bevel are configured as frosted surfaces.

[0011] Optionally, the absorption bottle is provided with a bottle mouth, the outer diameter of the bottle mouth is smaller than the inner diameter of the opening, and a sealing ring is provided between the bottle mouth and the opening.

[0012] Optionally, a heat-insulating layer is provided inside the side wall of the condenser.

[0013] Optionally, the condenser is made of elastic material, and comprises an inner wall and an outer wall, the inner wall is closely attached to the side wall of the absorption bottle, and the gap between the inner wall and the outer wall is used to accommodate the condensate.

[0014] Optionally, the condenser further has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively arranged on opposite sides of the condenser in the axial direction, so as to circulate the condensate in the condenser.

[0015] In a second aspect, the present application also provides a cold trap capture device, comprising an air source, an aerosol collector as described in the first aspect, and a negative pressure generator, wherein the air source, the aerosol collector, and the negative pressure generator are connected in sequence along an air path.

[0016] Compared with the prior art, in the embodiment of the utility model, the condenser is sleeved on the outside of the absorption bottle, and there is a larger heat exchange area between the condenser and the absorption bottle, and a smaller heat exchange area between the condenser and the external environment. As a result, the additional heat loss in the condenser is smaller, and the absorption bottle in the condenser can maintain a low temperature, thereby improving the aerosol capture efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or several embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 It is a structural schematic diagram of an aerosol collector in the prior art;

[0019] Figure 2 A schematic diagram of the external structure of an aerosol collector provided in one embodiment of the present application;

[0020] Figure 3A schematic cross-sectional structure diagram of an aerosol collector provided in one embodiment of the present application;

[0021] Figure 4 A schematic diagram of the explosion structure of an aerosol collector provided in one embodiment of the present application;

[0022] Figure 5 A schematic diagram of an explosion structure of an aerosol collector provided in another embodiment of the present application;

[0023] Figure 6 A schematic diagram of an explosion structure of an aerosol collector provided in another embodiment of the present application;

[0024] Figure 7 A schematic diagram of an explosion structure of an aerosol collector provided in another embodiment of the present application;

[0025] Figure 8 A schematic diagram of the structure of a cold trap capture device provided in one embodiment of the present application;

[0026] Fig. 9 A schematic diagram of an aerosol collector assembly provided in one embodiment of the present application.

[0027] The reference numerals are as follows:

[0028] 10. Aerosol collector; 100. Air guide pipe; 101. Outer air tube; 101A. Air inlet; 101B. Air outlet; 102. Inner air tube; 102A. Air inlet end; 102B. Air outlet end; 103. Absorption plate; 103A. Absorption hole; 104. Grip;

[0029] 110, absorption bottle; 111, bottle mouth; 111A, first annular inclined surface; 111B, boss; 112, bottle wall; 113, sealing ring;

[0030] 120, condenser tube; 121, opening; 121A, second annular slope; 122, liquid inlet; 123, liquid outlet; 124, side wall; 125, inner wall; 126, outer wall;

[0031] 20. Gas source;

[0032] 30. Negative pressure generator. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the utility model, the utility model is described in more detail in the following in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on another element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an aerosol collector in the prior art. The aerosol collector in the prior art only includes an absorption bottle and an air guide pipe. The absorption bottle stores an absorption solution corresponding to the aerosol. The air guide pipe and the absorption bottle are assembled into an aerosol collector and placed in an insulation barrel. Condensate is stored in the insulation barrel, which is usually an ice salt bath mixed with ice water and sodium chloride. This allows the absorption solution in the absorption bottle to absorb the aerosol under low temperature conditions. The insulation barrel has a large volume and can accommodate multiple aerosol collectors at the same time. Therefore, the insulation barrel has a large open area and side wall area, so that the condensate directly exchanges heat with the outside world, resulting in the temperature of the stored condensate rising and being unable to meet low temperature conditions for a long time.

[0036] See also Figure 2 , Figure 2 The schematic diagram of the external structure of the aerosol collector 10 provided in one embodiment of the present application. The aerosol collector 10 includes an air guide pipe 100, an absorption bottle 110 and a condenser 120 which are assembled from the inside to the outside, wherein the air guide pipe 100 includes two ends, one end of which is used to introduce the gas containing the aerosol into the absorption bottle 110, and the other end is used to discharge the gas after the aerosol is absorbed. The absorption bottle 110 stores the absorption solution, and the condenser 120 sleeved on the outside of the absorption bottle 110 contains condensate. The condensate is heat-exchanged with the absorption bottle 110 to keep the absorption solution at a low temperature, thereby improving the efficiency of absorbing the aerosol.

[0037] Please refer to Figure 2 and Figure 3 , Figure 3 The cross-sectional structure diagram of the aerosol collector 10 provided in one embodiment of the present application. The air guide pipe 100 includes an air outlet outer tube 101 and an air inlet inner tube 102. The air inlet inner tube 102 is used to guide the gas containing aerosol into the absorption bottle 110, and the air outlet outer tube 101 is used to guide the gas after the aerosol is absorbed to be discharged from the absorption bottle 110. Specifically, the air outlet outer tube 101 includes an air inlet 101A and an air outlet 101B. The air inlet end 102A of the air inlet inner tube 102 is arranged on the tube wall of the air outlet outer tube 101, and is partially penetrated inside the air outlet outer tube 101. The air outlet end 102B of the air inlet inner tube 102 extends from the air inlet 101A of the air outlet outer tube 101. The air inlet 101A and the air outlet 102B are disposed on the same side of the air guide tube 100 , so that the air inlet 101A and the air outlet 102B are connected to the absorption bottle 110 at the same time.

[0038] Specifically in the embodiment, the air inlet end 102A of the air inlet inner tube 102 and the air outlet 101B of the air outlet outer tube 101 are arranged on opposite sides of the air guide pipe 100 in opposite directions, and the air inlet end 102A and the air outlet end 102B of the air inlet inner tube 102 are arranged vertically, and the air inlet 101A and the air outlet 101B of the air outlet outer tube 101 are also arranged vertically. The inner diameter size of the air inlet end 102A of the air inlet inner tube 102 and the air outlet 101B of the air outlet outer tube 101 is similar, so that when multiple aerosol collectors 10 are connected in series, a conventional air guide hose can be used to connect the air outlet 101B of the previous aerosol collector 10 and the air inlet end 102A of the next aerosol collector 10. The inner diameter of the outlet end 102B of the air inlet inner tube 102 is much smaller than the inner diameter of the air inlet port 101A of the air outlet outer tube 101, so that the outlet end 102B can extend from the air inlet port 101A, and the gas absorbed by the aerosol can be discharged from the absorption bottle 110 through the annular gap area between the air inlet port 101A and the outlet end 102B. Specifically, the inner diameters of the air inlet end 102A, the outlet end 102B of the air inlet inner tube 102 and the outlet port 101B of the air outlet outer tube 101 are preferably set to 1.0 mm.

[0039] In some embodiments, an absorption plate 103 is provided at the outlet end 102B of the air inlet inner tube 102. The absorption plate 103 is configured to be spherical in shape, and the diameter of the spherical absorption plate 103 is larger than the diameter of the outlet end 102B to increase the aerosol absorption surface area. The spherical absorption plate 103 is provided with a plurality of absorption holes 103A, and the aperture of each absorption hole 103A is much smaller than the inner diameter of the air inlet 101A. When the aerosol collector 10 is in use, the absorption plate 103 is immersed in the absorption liquid in the absorption bottle 110. When the gas enters the absorption plate 103 from the air inlet end 102A, the gas is dispersed into extremely fine bubbles through multiple absorption holes 103A and enters the absorption liquid. When passing through the absorption plate 103, part of the mist aerosol in the gas is first retained by the gap between the absorption holes 103A in the absorption plate 103, and then absorbed by the absorption liquid in the absorption plate 103. The remaining part of the aerosol enters the absorption bottle 110 through the absorption holes 103A, forming fine bubbles, which are then absorbed by the absorption liquid in the absorption bottle 110, thereby improving the aerosol capture efficiency of the absorption liquid.

[0040] See also Figure 4 , Figure 4 Schematic diagram of the explosion structure of the aerosol collector 10 provided in one embodiment of the present application. In some embodiments, the outer side of the air inlet 101A of the air outlet outer tube 101 is a ground inclined surface for matching with the absorption bottle 110, so that the air inlet 101A can be snapped into the bottle mouth 111 of the absorption bottle 110. Specifically, the slope of the inclined surface is usually 10 degrees to provide a limiting effect, so that when the air inlet 101A is snapped into the bottle mouth 111 of the absorption bottle 110 (that is, the air guide pipe 100 and the absorption bottle 110 are assembled), the bottom of the air outlet end 102B of the air inlet inner tube 102 is still at an appropriate distance from the bottom of the absorption bottle 110. Specifically, the appropriate distance is preferably set to 5.0 mm in this embodiment to ensure that when the gas is discharged from the air outlet end 102B, there is enough time and space for the aerosol to be absorbed by the absorption solution. The ground edge is achieved by frosting to increase the air tightness between the absorption bottle 110 and the air guide tube 100. At the same time, the contact surface at the ground edge can provide a certain friction force, so that the air guide tube 100 and the absorption bottle 110 are connected by the friction force, and the user can move the air guide tube 100 and the absorption bottle 110 together by grasping the air guide tube 100. Of course, the user can also separate the air guide tube 100 from the absorption bottle 110 by applying a pulling force exceeding the friction force to the air guide tube 100 and the absorption bottle 110 respectively.

[0041] In some embodiments, a protrusion is provided on the other side of the air guide tube 100 which is relatively far from the air inlet 101A and the air outlet 102B, and the protrusion is defined as a gripping portion 104, which is used to facilitate the separation of the air guide tube 100 and the absorption bottle 110. For example, when the air guide tube 100 and the absorption bottle 110 are tightly fitted, the user can grasp the protrusion to pull the air guide tube 100 and the absorption bottle 110 out of the condenser 120 together to achieve separation; when the air guide tube 100 needs to be separated from the absorption bottle 110, the user fixes the absorption bottle 110 with one hand and pulls the gripping portion 104 with the other hand to separate the air guide tube 100 and the absorption bottle 110 from each other.

[0042] Please continue reading Figure 4 The absorption bottle 110 includes a bottle wall 112, and a bottle mouth 111 is arranged on the bottle wall 112. The absorption bottle 110 is tightly fitted to the air inlet 101A of the air outlet outer cylinder 101, so that when the absorption bottle 110 is sleeved on the outside of the air inlet 101A of the air outlet outer cylinder 101, there is a very small gap between the inner side of the bottle mouth 111 and the outer side of the air inlet 101A, and it is difficult for the gas to flow between the inner side and the outer side of the bottle mouth 111, thereby achieving the air tightness inside the absorption bottle 110. Specifically, the inner side of the bottle mouth 111 of the absorption bottle 110 is set as an inclined surface and is frosted, so that the inner side of the absorption bottle 110 is tightly fitted to the outer side of the air inlet 101A of the air outlet outer cylinder 101, so that the gas in the absorption bottle 110 can only be discharged from the air inlet 101A of the air outlet outer cylinder 101, thereby avoiding the gas escape and causing inaccurate detection of the subsequently collected gas.

[0043] The condenser 120 is sleeved on the outside of the absorption bottle 110, and the condenser 120 contains condensate, which exchanges heat with the absorption bottle 110, so that the absorption solution in the absorption bottle 110 is kept at a low temperature, thereby improving the efficiency of the absorption solution in absorbing aerosols. Specifically, the condenser 120 is provided with an opening 121, and the absorption bottle 110 enters the condenser 120 from the opening 121, and the condensate is contained in the gap between the condenser 120 and the absorption bottle 110. Specifically in the embodiment, the optimal temperature condition for low-temperature absorption is about -70°C, so the condensate can use acetone / dry ice mixture or acetone / liquid nitrogen mixture and other condensate, which is not limited. If the temperature of the absorption solution is higher than the condensate, the absorption solution transfers heat to the condensate through the bottle wall 112 of the absorption bottle 110, thereby reducing the temperature of the absorption solution itself and achieving low temperature conditions. It can be understood that the opening 121 of the condenser 120 is airtight to prevent the condensate from overflowing from the opening 121, which will be described in detail later and will not be described here.

[0044] It can be understood that since the temperature of the condensate is extremely low relative to the room temperature, the heat loss of the condensate during use is also extremely large. Specifically, when the condensate absorbs heat from the absorption bottle 110 to provide low temperature, it also absorbs heat from the outside air, causing the temperature of the condensate to rise rapidly. Therefore, it is necessary to insulate the condenser 120 to reduce heat loss. Specifically in the embodiment, the side wall 124 of the condenser 120 is provided with an insulation layer (not shown), which can be a double-layer glass structure and the gap in the double-layer structure is evacuated to reduce heat conduction by using the vacuum layer, or an insulation layer made of materials such as asbestos, polyurethane, etc. is provided on the outside of the side wall 124.

[0045] In some embodiments, the condenser 120 further has a liquid inlet 122 and a liquid outlet 123, which are respectively arranged on opposite sides of the condenser 120 in the axial direction, and are used to circulate the condensate in the condenser 120. Specifically, the liquid inlet 122 is directly or indirectly connected to an external cold source through a liquid pipeline, and the cold source continuously inputs a relatively low-temperature condensate into the condenser 120 through the liquid inlet 122, and the condensate is heated after exchanging heat with the absorption solution. The liquid outlet 123 is also directly or indirectly connected to an external cold source through a liquid pipeline, and the cold source continuously draws a relatively high-temperature condensate from the condenser 120 through the liquid outlet 123, and cools the condensate again in the cold source, so that the cooled condensate is input into the condenser 120 again through the liquid inlet 122. The liquid inlet 122 is preferably arranged at the bottom of the condenser 120, and the liquid outlet 123 is preferably arranged at the top of the condenser 120 to increase the flow area of ​​the condensate in the condenser 120, so that the temperature distribution of the condenser 120 is more uniform, and the condensate contacts the part to be cooled first, thereby improving the condensation efficiency of the absorption solution.

[0046] It should be noted that the cold source has storage, refrigeration and suction functions, which are specifically selected by those skilled in the art according to actual conditions and are not limited to this.

[0047] In some embodiments, the condenser 120 is integrally formed with the absorption bottle 110. Specifically, in the embodiment, the absorption bottle 110 is usually made of glass, and the condenser 120 is also made of glass, so the mouth of the condenser 120 and the mouth 111 of the absorption bottle 110 can be fired together, so that the condenser 120 and the absorption bottle 110 are integrally formed.

[0048] Please continue reading Figure 4In some other embodiments, the condenser 120 is detachably connected to the absorption bottle 110. Through the detachable connection, during the process of collecting aerosols, the absorption bottle 110 can be directly pulled out of the condenser 120 to perform the next step of testing the absorption solution in the absorption bottle 110, thereby saving the time cost of waiting for the condensate in the condenser 120 to be removed before taking out the absorption solution. At the same time, if the waiting time is long, the temperature of the solution in the absorption bottle 110 may rise, causing some aerosol components (mostly volatile components) in the absorption solution to escape from the solution again, resulting in a lower aerosol component detected when testing the absorption solution, thereby reducing the detection accuracy.

[0049] Specifically in the embodiment, a boss 111B is provided at the bottle mouth 111 of the absorption bottle 110 extending outward in the radial direction, and the boss 111B is used to abut against the side wall 124 at the opening 121 of the condenser tube 120. The condenser tube 120 applies a supporting force to the boss 111B to prevent the absorption bottle 110 from completely falling into the bottom of the condenser tube 120, thereby realizing the limiting effect of the condenser tube 120 on the absorption bottle 110. At the same time, the boss 111B covers the area of ​​the opening 121 of the condenser tube 120 to prevent the condensate from overflowing from the opening 121.

[0050] See also Figure 5 , Figure 5 Schematic diagram of the explosion structure of the aerosol collector 10 provided for another embodiment of the present application. In some other embodiments, the opening 121 of the condenser 120 and the bottle mouth 111 of the absorption bottle 110 are both set to mutually matching annular slopes for realizing the detachable connection between the condenser 120 and the absorption bottle 110. Specifically, the outer side of the bottle mouth 111 of the absorption bottle 110 is set to a first annular slope 111A, and the inner side of the opening 121 of the condenser 120 is set to a second annular slope 121A. The radii of the first annular slope 111A and the second annular slope 121A are gradually reduced along the axial direction toward the bottom of the absorption bottle 110, and the slopes of the two slopes are the same, preferably 10 degrees. When assembling the condenser 120 and the absorption bottle 110, the absorption bottle 110 is placed into the condenser 120 through the opening 121, and the first annular slope 111A is completely in contact with the second annular slope 121A. On the contrary, when the condenser 120 and the absorption bottle 110 need to be separated, the outer diameter of the absorption bottle 110 will not be larger than the inner diameter of the corresponding opening 121 of the condenser 120 , so the absorption bottle 110 can be smoothly removed from the condenser 120 .

[0051] Furthermore, the first annular bevel 111A and the second annular bevel 121A are frosted to achieve mutual cooperation and increase air tightness. Specifically, the frosting treatment can eliminate the tiny protrusions between the first annular bevel 111A and the second annular bevel 121A, thereby reducing the gap between the two surfaces and increasing the fitting area between the two surfaces, and improving the air tightness of the assembly of the absorption bottle 110 and the condenser 120. When the condensate flows in the condenser 120, a certain impact is generated on the cooperation between the condenser 120 and the absorption bottle 110, and the cooperation of the frosted bevel is greatly affected by the impact. Therefore, in some embodiments, a buckle (not shown) is provided on the outside of the opening 121 of the condenser 120, and the buckle is used to clamp the condenser 120 and the absorption bottle 110, further improving the stability of the cooperation between the condenser 120 and the absorption bottle 110.

[0052] See also Figure 6 , Figure 6 Schematic diagram of the explosion structure of the aerosol collector 10 provided in another embodiment of the present application. In some embodiments, the outer diameter of the bottle mouth 111 of the absorption bottle 110 is smaller than the inner diameter of the opening 121 of the condenser tube 120, thereby generating a certain gap between the absorption bottle 110 and the opening 121, and a sealing ring 113 is arranged in the gap to realize the detachable connection between the absorption bottle 110 and the condenser tube 120 through the sealing ring 113. Specifically, the sealing ring 113 is made of elastic material, such as rubber. The size of the sealing ring 113 is slightly larger than the gap between the absorption bottle 110 and the condenser tube 120. When the sealing ring 113 is disposed between the absorption bottle 110 and the condenser tube 120, it is simultaneously subjected to the extrusion pressure of the bottle wall 112 of the absorption bottle 110 and the side wall 124 of the condenser tube 120. At the same time, the sealing ring 113 itself undergoes a certain degree of contraction deformation, so that the elastic potential energy stored in the sealing ring 113 due to strain can resist the force of moving the sealing ring 113, thereby preventing the relative movement between the sealing ring 113 and the absorption bottle 110 and the condenser tube 120, thus achieving a limiting effect. At the same time, the contracted sealing ring 113 can completely seal the gap between the absorption bottle 110 and the opening 121 of the condenser tube 120, thus achieving an airtight effect.

[0053] In some embodiments, the outer side of the bottle mouth 111 of the absorption bottle 110 and the inner side of the opening 121 of the condenser 120 are provided with mutually matching threads, so as to realize the detachable connection between the absorption bottle 110 and the condenser 120 through threaded connection. Specifically, the outer side of the bottle mouth 111 of the absorption bottle 110 is provided with a first thread, and the inner side of the opening 121 of the condenser 120 is provided with a second thread, and the standard parameters of the first thread and the second thread are the same, for example, the first thread has the same pitch and thread angle as the second thread. When assembling the absorption bottle 110 and the condenser 120, the absorption bottle 110 is rotated relative to the condenser 120 along the thread direction, and the absorption bottle 110 and the condenser 120 are connected; on the contrary, when disassembling the absorption bottle 110 and the condenser 120, the absorption bottle 110 and the condenser 120 can be separated by relatively rotating the absorption bottle 110 or the condenser 120 along the thread direction.

[0054] See also Figure 7 , Figure 7 Schematic diagram of the explosion structure of the aerosol collector 10 provided for another embodiment of the present application. In some embodiments, the condenser 120 is made of elastic material to wrap the absorption bottle 110 by elastic force and realize the detachable connection between the condenser 120 and the absorption bottle 110. Specifically, the condenser 120 is a bag-like structure, which can also be called a condensation bag. The condensation bag contains condensate for heat exchange with the absorption solution. When the condensation bag is set on the outside of the absorption bottle 110, the part of the condensation bag directly attached to the bottle wall 112 of the absorption bottle 110 is the inner wall 125 of the condensation bag, and the rest of the condensation bag is the outer wall 126 of the condensation bag. When the condensation bag is used to cool the absorption solution in the absorption bottle 110, the condensate cannot directly exchange heat with the absorption solution, but needs to be indirectly exchanged through the inner wall 125 of the condensation bag and the bottle wall 112 of the absorption bottle 110. Therefore, in addition to having a certain elasticity, the material of the condensation bag also needs to have a certain thermal conductivity. In this embodiment, the condensation bag is made of silica gel material. Of course, those skilled in the art can also choose other materials to make the condenser bag according to actual needs. Like the condenser tube 120, the condenser bag also has a liquid inlet 122 and a liquid outlet 123 to help the condensate to achieve internal circulation of the condensation system and improve the heat exchange efficiency of the condensate. The specific settings can refer to the configuration of the liquid inlet 122 and the liquid outlet 123 above, which will not be repeated here.

[0055] See also Figure 8 , Figure 8A schematic diagram of the structure of a cold trap capture device provided in one embodiment of the present application. The present application also provides a cold trap capture device, including an air source 20, an aerosol collector 10, and a negative pressure generator 30. The air source 20 is used to simulate the atomization of the e-cigarette oil to generate an aerosol when the e-cigarette is working, the aerosol collector 10 is used to capture the aerosol in the air source 20, so as to perform a chemical quantitative analysis of the aerosol, and the negative pressure generator 30 is used to simulate the user's respiratory system to generate a negative pressure to inhale the gas generated by the e-cigarette. For example, a vacuum pump can be used, and negative pressure inhalation gas can be intermittently generated in combination with the user's mode of inhaling the e-cigarette.

[0056] Specifically, there are usually multiple aerosol components generated by the atomization of cigarette oil, and a single absorption solution may not be able to determine all aerosol components. For example, nicotine, butanediol, heavy metal elements, etc. may exist in the aerosol, and their absorption solutions may not coexist. Therefore, it may be necessary to design multiple aerosol collectors 10 in series to collect and detect different types of aerosols respectively. In addition, for some aerosol components, the absorption efficiency of the absorption solution may not be enough to absorb the corresponding aerosol components to meet the standard at one time. Therefore, it is necessary to grade and connect multiple aerosol collectors 10 that absorb the same aerosol components in series, so as to complete the upgrade of the corresponding aerosol components. Specifically in the embodiment, the cold trap capture device includes two aerosol collectors 10, wherein the air inlet end 102A of one aerosol collector 10 is connected to the air source 20, the air outlet 101B is connected to the air inlet end 102A of another aerosol collector 10, and the air outlet 101B of the other aerosol collector 10 is connected to the negative pressure generator 30.

[0057] In some embodiments, the condenser 120 of the aerosol collector 10 is also provided with a liquid inlet 122 and a liquid outlet 123, so that the condensed solution can be recycled. Therefore, when multiple aerosol collectors 10 are connected in series, the cold trap capture device also includes at least one cold source accordingly. The condenser 120 of multiple aerosol collectors 10 can be connected to the cold source in series or in parallel, without limitation.

[0058] See also Fig. 9 , Fig. 9A schematic diagram of an aerosol collector assembly provided for an embodiment of the present application, in some embodiments, the cold trap capture device includes a plurality of aerosol collectors 10, namely, a plurality of air guide pipes 100, an absorption bottle 120 and a condenser 120, wherein each air guide pipe 100 and the absorption bottle 120 are independently arranged, and the plurality of condensers 120 are fixedly connected to form an integral condensation device, specifically, the liquid inlet 122 of the plurality of condensers 120 is fixedly connected to the liquid outlet 123 of another adjacent condenser 120. Specifically in the embodiment, after placing the condensation device composed of a plurality of condensers 120, the user does not need to use a hose to connect the liquid inlet 122 of each condenser 120 to the liquid outlet 123 of other condensers 120, but only needs to connect the liquid inlet 122 of the condenser 120 at the first section of the entire condensation device and the liquid outlet 123 of the condenser 120 at the end to the cold source. Finally, the plurality of air guide pipes 100 and the absorption bottles 120 are respectively inserted into the corresponding condensing tubes 120 in the condensing device and the experiment can be started, thereby reducing the preparation time in the early stage of the experiment.

[0059] In summary, the aerosol collector 10 and the cold trap capture device provided by the present application, the absorption bottle 110 of the aerosol collector 10 is provided with a condenser 120, and the condenser 120 performs heat exchange with the absorption bottle 110 to provide low temperature conditions and improve the aerosol capture efficiency. At the same time, the coolant can circulate inside the cooling system by relying on the cold source to always ensure the low temperature conditions during the aerosol capture process. At the same time, the condenser 120 and the absorption bottle 110 are set to be detachably connected, and can be extracted from the absorption bottle 100 at any time after the aerosol capture is completed, saving the waiting time cost, timely detecting the absorption solution in the absorption bottle 110, and avoiding the escape of volatile aerosol components, thereby further improving the detection accuracy. Finally, the cold trap capture device can combine the aerosol collector 10 in series to realize the collection of multi-component aerosols or improve the collection efficiency of aerosol components through a multi-stage setting. A plurality of condensing tubes 120 can be connected to adjacent liquid inlets 122 and liquid outlets 123 to form a condensing device, thereby further reducing the preparation time in the early stage of the experiment.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An aerosol collector, characterized in that: include: The air guide pipe comprises an air outlet outer tube and an air inlet inner tube, wherein the air inlet inner tube is partially inserted into the air outlet outer tube, and the air outlet end of the air inlet inner tube extends out from the air inlet of the air outlet outer tube; An absorption bottle is tightly fitted to the air inlet of the air outlet outer cylinder, and the air outlet end of the air inlet inner tube is accommodated inside the absorption bottle; The condenser is sleeved on the outside of the absorption bottle, and the gap between the condenser and the absorption bottle is used to accommodate condensate.

2. The aerosol collector according to claim 1, characterized in that: The condenser is provided with an opening, and the opening is used to realize a detachable connection between the absorption bottle and the condenser.

3. The aerosol collector according to claim 2, characterized in that: The absorption bottle is provided with a bottle mouth, and a boss is provided along the outer side of the bottle mouth, and the boss is used to abut against the side wall of the opening position.

4. The aerosol collector according to claim 2, characterized in that: The absorption bottle is provided with a bottle mouth, a first annular inclined surface is provided on the outer side of the bottle mouth, and a second annular inclined surface matched with the first annular inclined surface is provided on the inner side of the opening.

5. The aerosol collector according to claim 4, characterized in that: The first annular bevel and the second annular bevel are configured as frosted surfaces.

6. The aerosol collector according to claim 2, characterized in that: The absorption bottle is provided with a bottle mouth, the outer diameter of the bottle mouth is smaller than the inner diameter of the opening, and a sealing ring is provided between the bottle mouth and the opening.

7. The aerosol collector according to claim 1, characterized in that: A heat-insulating layer is arranged inside the side wall of the condenser.

8. The aerosol collector according to claim 2, characterized in that: The condenser is made of elastic material and comprises an inner wall and an outer wall. The inner wall is closely attached to the bottle wall of the absorption bottle, and the gap between the inner wall and the outer wall is used to accommodate the condensate.

9. The aerosol collector according to any one of claims 1 to 8, characterized in that: The condenser tube also has a liquid inlet and a liquid outlet. The liquid inlet and the liquid outlet are respectively arranged on opposite sides of the condenser tube in the axial direction, and are used to circulate the condensate in the condenser tube.

10. A cold trap capture device, characterized in that: It comprises an air source, an aerosol collector as claimed in any one of claims 1 to 9, and a negative pressure generator, wherein the air source is connected to the air inlet end of the aerosol collector, and the negative pressure generator is connected to the air outlet of the aerosol collector.

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