Small cold trap device with high water vapor separation

Abstract

The application relates to the technical field of small cold trap devices, in particular to a small cold trap device with high water-vapor separation efficiency. The device comprises a shell, a conical cover, semiconductor refrigerating sheets, graphene heat-dissipating plates and heat-dissipating fans, the conical cover is arranged above the cold trap square shell, a conical condensing component is arranged at a gas outlet in the conical cover, two semiconductor refrigerating sheets are arranged on the two sides of the shell, two graphene heat-dissipating plates are arranged on the two sides of the two semiconductor refrigerating sheets, and two heat-dissipating fans are arranged on the two sides of the two graphene heat-dissipating plates. The application provides a small cold trap with high water-vapor separation efficiency, which can effectively increase the metal contact area of water vapor in the cold trap square shell through the design of the conical cover and the conical condensing component, improve the condensing efficiency, facilitate disassembly, maintenance and ice removal.

Description

Technical Field

[0001] This application relates to the field of small cold trap devices, and more particularly to small cold trap devices with high efficiency water vapor separation. Background Technology

[0002] A cold trap is a device that prevents vapor or liquid from entering a measuring instrument from a system, or vice versa. Existing small cold traps in related technologies, while compact and easy to integrate, suffer from the following significant drawbacks due to design and space limitations: Firstly, the refrigeration unit and the cold trap structure are integrated. To achieve compactness, the refrigeration unit and the main body of the cold trap are often designed as a single unit, making independent disassembly impossible and increasing the difficulty of maintenance and replacement. In case of failure, individual components cannot be replaced; the entire unit must be replaced, resulting in high maintenance costs and potential damage to the cold trap's sealing structure during disassembly. Secondly, the size limitation leads to incomplete condensation, low separation efficiency, a small internal condensation metal surface, a short gas flow path, a short residence time, and insufficient contact with the condensation surface, resulting in incomplete water vapor separation. At high gas flow rates, the condensed gas can easily carry liquid water that has not been promptly discharged from the cold trap, causing secondary pollution. Therefore, it is evident that small cold traps in related technologies suffer from significant drawbacks, including size limitations leading to incomplete condensation and the inconvenience of disassembly and maintenance due to the integrated structure of the refrigeration unit and the cold trap. Utility Model Content

[0003] To avoid the aforementioned drawbacks, a small cold trap device for efficient water vapor separation is provided.

[0004] A small cold trap device for efficient water vapor separation includes a shell, a conical cover, a refrigeration unit, and a conical condenser. The conical cover is located on top of the square shell of the cold trap, and the conical condenser is located inside the conical cover. The conical cover is provided with an exhaust channel, and the conical condenser has multiple exhaust slits arranged circumferentially on its circumferential surface. Gas inside the shell enters the exhaust channel of the conical cover through the exhaust slits.

[0005] Furthermore, the housing includes a cold trap cylinder and a base, and the sidewall of the cold trap cylinder is provided with vertical protrusions.

[0006] Furthermore, the cone cover includes a cover body and a cone body, with the cone body positioned below the cover body, and the cover body and cone body being integrally formed; the cone cover is provided with an exhaust channel and a cone-shaped condenser mounting groove for mounting the cone-shaped condenser; the exhaust channel includes a first circular hole and a second circular hole, with the first circular hole positioned above the second circular hole, and the cross-section of the first circular hole being smaller than that of the second circular hole; the cone-shaped condenser mounting groove is configured as a frustum-shaped mounting groove; the cold trap inlet is located above the bottom of the cone cover.

[0007] Furthermore, the conical condenser includes a connecting part, an inner cone, and an outer cone. The inner cone and the outer cone are inverted, and the connecting part is set as a cylinder. The inner cone and the connecting part are integrally formed, and the inner cone is located below the connecting part. The outer cone is located outside the connecting part, and the bottom area of ​​the outer cone matches the top area of ​​the frustum of the conical condenser mounting groove.

[0008] Furthermore, the base is equipped with a water collection trough for drainage.

[0009] Furthermore, the top of the connecting part of the conical condenser is inserted into the second circular hole, the inverted bottom surface of the outer cone is in contact with the top surface of the conical condenser mounting groove, and the conical condenser is connected to the conical cover.

[0010] Furthermore, the outlet pipe at the lower end of the cold trap outlet is inserted into the first circular hole, and the cold trap outlet is connected to the cone cover.

[0011] Furthermore, the cooling unit includes a semiconductor cooling chip, a graphene heat sink, and a cooling fan; two semiconductor cooling chips are placed on both sides of the housing, two graphene heat sinks are respectively disposed on both sides of the two semiconductor cooling chips, and two cooling fans are respectively disposed on both sides of the two graphene heat sinks. Furthermore, the small cold trap device for efficient water vapor separation is also equipped with thermally conductive silicone grease sheets, with thermally conductive silicone grease sheets pasted on both sides of the semiconductor cooling chip.

[0012] Furthermore, after a thermally conductive silicone grease is attached to the inner side of the semiconductor cooling chip, it is tightly bonded to the square housing of the cold trap, and after a thermally conductive silicone grease is attached to the outer side, it is tightly bonded to the graphene heat sink.

[0013] This application has at least one of the following beneficial effects: 1. The conical cap design of this application increases the internal metal area of ​​the cold trap. When water-vapor-saturated gas enters the cold trap, it impacts the inclined surface of the conical cap and disperses outwards, effectively slowing the gas flow rate and increasing the metal area for water vapor condensation inside the cold trap, thus improving the efficiency of water vapor condensation. By altering the internal structure of the cold trap with the conical cap, the condensation area for water vapor is increased while maintaining the advantage of a small overall cold trap volume, thereby improving the water vapor separation efficiency of the small-volume cold trap.

[0014] 2. The conical condenser design of this application further increases the metal area for water vapor condensation within the cold trap, while effectively preventing the condensed gas from carrying liquid water out. Both of these factors effectively increase the metal-to-metal contact area of ​​water vapor inside the square shell of the cold trap, improving condensation efficiency. The conical structure of the cold trap outlet further increases the water vapor condensation area, while also effectively preventing secondary pollution caused by the condensed gas carrying liquid water out.

[0015] 3. This application employs a semiconductor cooling chip, which can reverse its operation to heat and defrost the cold trap when ice forms inside. Furthermore, the semiconductor cooling chip and the cold trap structure are independent, facilitating maintenance and replacement. The cooling unit of the cold trap uses a semiconductor cooling chip; when ice forms inside, simply reversing the operation of the semiconductor cooling chip is sufficient to heat and defrost the cold trap. This process does not require any disassembly of the cold trap, solving the problem of difficult cleaning after ice formation in small cold traps. The independence of the cold trap structure and the semiconductor cooling chip achieves the goal of convenient maintenance and replacement of the cooling unit without disassembling the cold trap structure or compromising its sealing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the small cold trap device for efficient water vapor separation described in this application.

[0017] Figure 2 This is a front view schematic diagram of the small cold trap device for efficient water vapor separation described in this application.

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the small cold trap device for efficient water vapor separation described in this application.

[0019] Figure 4 This is a cross-sectional structural diagram of the cone cap of this application.

[0020] Figure 5 This is a schematic diagram of the main view structure of the conical condenser of this application.

[0021] Figure 6 This is a schematic diagram of the bottom view of the conical condenser component of this application.

[0022] Reference numerals: 1. Shell; 2. Conical cover; 3. Cold trap inlet; 4. Conical condenser; 5. Cold trap outlet; 6. Cooling fan; 7. Graphene heat sink; 8. Cold trap drain; 9. Thermal grease sheet; 10. Semiconductor cooling chip; 11. Cold trap cylinder; 12. Base; 13. Vertical protrusion; 14. Water collection groove; 21. Cover; 22. Cone; 23. First circular hole; 24. Second circular hole; 25. Conical condenser mounting groove; 41. Connecting part; 42. Inner cone; 43. Outer cone; 44. Annular groove; 45. Exhaust gap. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] Example 1: A small, highly efficient water vapor separation cold trap device includes a housing 1, a conical cover 2, a refrigeration unit, and a conical condenser 4. The conical cover 2 is positioned above the square housing 1 of the cold trap, and the conical cover 2 and the square housing 1 are detachably connected. The conical condenser 4 is disposed inside the conical cover 2. The conical cover 2 is provided with an exhaust channel, and multiple exhaust slits 45 are arranged circumferentially on the periphery of the conical condenser 4. Gas inside the housing 1 enters the exhaust channel of the conical cover 2 through the exhaust slits 45. In this embodiment, the exhaust slits 45 are arranged in an average of eight, forming an eight-lobed shape.

[0028] The housing 1 includes a cold trap cylinder 11 and a base 12. Vertical protrusions 13 are provided on the sidewalls of the cold trap cylinder. The cold trap cylinder 11 and the base 12 are fixedly connected. The vertical protrusions 13 increase the contact area between the interior of the housing 1 and water vapor. The cold trap inlet 3 is located above the bottom of the conical cap 2. Gas entering through the cold trap inlet 3 first passes through the vertical protrusions 13 as a condensation path before contacting the conical condenser 4. The base 12 is provided with a water collection tank 14 for drainage. The cold trap drain outlet 8 is located at the bottom of the housing for drainage.

[0029] The conical cover 2 includes a cover body 21 and a cone 22. The cone 22 is located below the cover body 21. The cover body 21 and the cone 22 are integrally formed. The cover body 21 is positioned above the square shell 1 of the cold trap, and the cone 22 is located inside the square shell 1 of the cold trap. The conical cover 2 has an exhaust channel and a conical condenser mounting groove 25 for mounting the conical condenser 4 and the cold trap outlet 5. The cold trap outlet 5 and the conical condenser 4 are connected. The inner and outer walls of the cone 22 form inclined surfaces. The exhaust channel includes a first circular hole 23 and a second circular hole 24. The first circular hole 23 is positioned above the second circular hole 24, and the cross-section of the first circular hole 23 is smaller than that of the second circular hole 24. The exhaust pipe at the lower end of the cold trap outlet 5 is inserted into the first circular hole 23, and the upper end extends out of the conical cover 2, connecting the cold trap outlet 5 and the conical cover 2. The conical condenser mounting groove 25 is a frustum-shaped mounting groove. The design of the conical cap 2 in this application increases the internal metal area of ​​the cold trap. After the water-vapor-saturated gas enters the cold trap, it impacts the inclined surface of the conical cap 2 and disperses outwards, effectively slowing the gas flow rate and increasing the metal area for water vapor condensation inside the cold trap, thus improving the efficiency of water vapor condensation. By altering the internal structure of the cold trap with the conical cap 2, the water vapor condensation area is increased while maintaining the advantage of a small overall volume of the cold trap, thereby improving the water vapor separation efficiency of the small-volume cold trap. In this embodiment, the contact area between the gas and the internal metal of the cold trap is increased, and the ratio of the gas's contact area inside the shell 1 to its contact area with the internal metal of the cold trap is decreased.

[0030] The conical condenser 4 includes a connecting portion 41, an inner conical portion 42, and an outer conical portion 43. The inner conical portion 42 and the outer conical portion 43 are inverted. The connecting portion 41 is cylindrical, and the top of the connecting portion 41 can be inserted into a second circular hole 24 to connect the conical condenser 4 and the conical cover 2. The inner conical portion 42 and the connecting portion 41 are integrally formed, with the inner conical portion 42 located below the connecting portion 41. The outer conical portion 43 is located outside the connecting portion 41, and its bottom area matches the top area of ​​the frustum of the conical condenser mounting groove 25. The bottom surface of the outer conical portion 43 abuts against the top of the frustum of the conical condenser mounting groove 25. The top of the connecting portion 41 of the conical condenser 4 is inserted into the second circular hole 24, and the inverted bottom surface of the outer conical portion 43 fits against the top surface of the frustum of the conical condenser mounting groove 25, connecting the conical condenser 4 to the conical cover 2. The inner conical portion 42 and the outer conical portion 43 together form eight exhaust slits 45. The conical condenser mounting groove 25 has its frustum-shaped mounting groove upright, while the conical condenser 4 is inverted and in the opposite direction, reducing the gas flow rate of the conical condenser 4. An annular groove 44 is provided on the connecting part 41 for installing a sealing ring, further securing the conical condenser 4 and the housing 1. The design of the conical condenser 4 in this application further increases the metal area for water vapor condensation inside the cold trap, while effectively preventing the condensed gas from carrying liquid water out. Both effectively increase the metal contact area of ​​water vapor inside the square housing 1 of the cold trap, improving condensation efficiency. The cold trap outlet adopts a conical structure, further increasing the water vapor condensation area, while effectively preventing secondary pollution caused by the condensed gas carrying liquid water out.

[0031] The cooling unit includes a thermoelectric cooler 10, a graphene heat sink 7, and a cooling fan 6. Two thermoelectric coolers 10 are positioned on opposite sides of the housing 1, two graphene heat sinks 7 are positioned on opposite sides of the two thermoelectric coolers 10, and two cooling fans 6 are positioned on opposite sides of the two graphene heat sinks 7. A cold trap air inlet 3 is located on the side of the housing 1 not connected to the thermoelectric cooler 10 for air intake. The efficient water vapor separation miniature cold trap device also includes thermally conductive silicone grease 9, which is adhered to both sides of the thermoelectric cooler 10. After the thermally conductive silicone grease 9 is adhered to the inner side of the thermoelectric cooler 10, it fits tightly against the square housing 1 of the cold trap; after the thermally conductive silicone grease 9 is adhered to the outer side, it fits tightly against the graphene heat sink 7. This application uses a thermoelectric cooler 10, which can reverse its operation to heat and defrost the cold trap when ice forms inside. Furthermore, the thermoelectric cooler 10 is independent of the cold trap structural components inside the housing 1, facilitating maintenance and replacement. The cooling unit of the cold trap uses a thermoelectric cooler 10. When ice forms inside the cold trap, simply reversing the operating state of the thermoelectric cooler 10 can heat and defrost the cold trap. This process does not require any disassembly of the cold trap, solving the problem of difficult cleaning of small cold traps after icing. The cold trap structure and the thermoelectric cooler 10 are independent of each other, achieving the goal of convenient maintenance and replacement of the cooling unit without disassembling the cold trap structure or compromising its sealing.

[0032] Gas enters through the cold trap inlet 3, condensed gas exits through the cold trap outlet 5, and liquid water exits through the cold trap drain outlet 8.

[0033] In summary, this application provides a small cold trap with efficient water vapor separation that effectively increases the metal contact area of ​​water vapor inside the square shell 1 of the cold trap by means of the design of the conical cover 2 and the conical condenser 4, thereby improving condensation efficiency and facilitating disassembly, maintenance and de-icing.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A small-scale cold trap device for high-efficiency water vapor separation, characterized in that, The device includes a housing (1), a cone cover (2), a refrigeration unit, and a cone-shaped condenser (4). The cone cover (2) is located above the square housing (1) of the cold trap. The cone-shaped condenser (4) is located inside the cone cover (2). The cone cover (2) is provided with an exhaust channel. The cone-shaped condenser (4) has multiple exhaust slits (45) arranged circumferentially on its circumferential surface. The gas in the housing (1) enters the exhaust channel of the cone cover (2) through the exhaust slits (45).

2. The small-scale cold trap device for high-efficiency water vapor separation according to claim 1, characterized in that, The housing (1) includes a cold trap cylinder (11) and a base (12), and the side wall of the cold trap cylinder is provided with vertical protrusions (13).

3. The small-scale cold trap device for high-efficiency water vapor separation according to claim 2, characterized in that, The cone cover (2) includes a cover body (21) and a cone body (22). The cone body (22) is located below the cover body (21). The cover body (21) and the cone body (22) are integrally formed. An exhaust channel and a cone-shaped condenser mounting groove (25) are provided inside the cone cover (2) for mounting the cone-shaped condenser (4). The exhaust channel includes a first circular hole (23) and a second circular hole (24). The first circular hole (23) is located above the second circular hole (24). The cross-section of the first circular hole (23) is smaller than that of the second circular hole (24). The cone-shaped condenser mounting groove (25) is set as a frustum-shaped mounting groove. The cold trap air inlet (3) is located above the bottom of the cone cover (2).

4. The small-scale cold trap device for high-efficiency water vapor separation according to claim 3, characterized in that, The conical condenser (4) includes a connecting part (41), an inner conical part (42), and an outer conical part (43). The inner conical part (42) and the outer conical part (43) are inverted respectively. The connecting part (41) is set as a cylinder. The inner conical part (42) and the connecting part (41) are integrally formed. The inner conical part (42) is located below the connecting part (41). The outer conical part (43) is located outside the connecting part (41). The bottom area of ​​the outer conical part (43) matches the top area of ​​the truncated cone of the conical condenser mounting groove (25).

5. The small-scale cold trap device for high-efficiency water vapor separation according to claim 4, characterized in that, The base (12) is provided with a water collection tank (14) for drainage.

6. The small-scale cold trap device for high-efficiency water vapor separation according to claim 5, characterized in that, The top of the connecting part (41) of the conical condenser (4) is inserted into the second round hole (24), and the inverted bottom surface of the outer cone (43) is in contact with the top surface of the conical condenser mounting groove (25). The conical condenser (4) is connected to the cone cover (2).

7. The small cold trap device for high-efficiency water vapor separation according to claim 6, characterized in that, The air outlet pipe at the lower end of the cold trap outlet (5) is inserted into the first round hole, and the cold trap outlet (5) is connected to the cone cover (2).

8. The small-scale cold trap device for high-efficiency water vapor separation according to claim 1, characterized in that, The cooling unit includes a semiconductor cooling chip (10), a graphene heat sink (7), and a cooling fan (6); two semiconductor cooling chips (10) are placed on both sides of the housing (1), two graphene heat sinks (7) are respectively placed on both sides of the two semiconductor cooling chips (10), and two cooling fans (6) are respectively placed on both sides of the two graphene heat sinks (7).

9. The small-scale cold trap device for high-efficiency water vapor separation according to claim 8, characterized in that, The efficient water vapor separation small cold trap device is also equipped with a thermally conductive silicone grease sheet (9), and the thermally conductive silicone grease sheet (9) is pasted on both sides of the semiconductor cooling chip (10).

10. The small-scale cold trap device for high-efficiency water vapor separation according to claim 9, characterized in that, After the thermal grease (9) is pasted on the inner side of the semiconductor cooling chip (10), it is tightly attached to the square shell (1) of the cold trap. After the thermal grease (9) is pasted on the outer side, it is tightly attached to the graphene heat sink (7).

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