Heating Module and Vaporizer

Abstract

A heating module and a vaporizer having the heating module are provided, which can heat a fluid uniformly and quickly. [Solution] A heating module (100) includes a heating block (1), a flash tube (3), and a metal filling. The heating block has a groove (2) in which a flash tube is installed, and a metal filling that fills the gap between the heating block and the flash tube. The heating module of the present invention allows heat from the heating block to be transferred quickly and uniformly to the flash tube, thereby uniformly and quickly heating the fluid inside the flash tube.

Description

[Technical Field]

[0001] The present invention relates to the field of analytical equipment, and in particular to a heating module and a vaporizer. [Background technology]

[0002] The vaporizer's heating module operates based on the flash evaporation phenomenon, which utilizes instantaneous high temperature and pressure to rapidly evaporate water or other liquids to form vapor. Due to its rapid heating performance and high pressure technology, the heating module is widely used in the energy and chemical industries, pharmaceutical and food industries, and environmental protection processes, and is particularly applicable to sample pretreatment for gas chromatography analysis.

[0003] In the heating module, the heating block rapidly heats and evaporates the liquid in the flash tube to form vapor. However, due to poor thermal conductivity between the heating block and the flash tube, the liquid in the flash tube is not heated uniformly, which further affects the analysis results. Summary of the Invention [Means for solving the problem]

[0004] To address the above problems, the present invention provides a heating module that can transfer heat quickly and evenly to the flash tube, thereby heating the fluid inside the flash tube evenly and quickly.

[0005] The present invention provides a heating module comprising a heating block, a flash tube, and a metal filler. The heating block has a groove in which a flash tube is installed, and the metal filler fills the gap between the heating block and the flash tube. The all-metal integration between the flash tube and the heating block allows for faster heat transfer and more accurate temperature control.

[0006] Optionally, the metal filling section is formed by filling the groove with liquid metal and allowing it to solidify, which can tightly fill the gap between the heating block and the flash tube, making heat transfer more efficient and rapid.

[0007] Optionally, the liquid metal is tin, zinc or aluminum.

[0008] Optionally, the groove is an annular groove, the annular groove including an inner annular wall and an outer annular wall spaced apart, and the flash tube is wrapped around and attached to the outer annular wall. Typically, a passivation layer is applied to the inner wall of the flash tube to prevent corrosion damage to the line caused by the liquid in the line and sample adsorption by the inner wall of the line. By wrapping the flash tube around and attaching it to the outer annular wall, the radius of curvature of the flash tube can be increased, protecting the passivation layer on the inner wall of the flash tube.

[0009] Optionally, the groove extends vertically and the notch of the groove is located at the top of the groove, and the metal filled in the groove does not hinder heat conduction even when it liquefies at high temperatures, so that a higher flash temperature can be achieved by overcoming the limitations imposed by the melting point of the metal.

[0010] Optionally, the heating block further includes a cover plate that covers the notch of the groove and is fixedly connected to the heating block, and the cover plate can prevent the external heat-insulating material from contacting the metal-filled portion, so that even if the metal liquefies, it will not overflow or come into contact with the heat-insulating material.

[0011] Optionally, the heating block includes a metal block, a heater rod receiving groove provided at an end of the metal block, and a heater rod fitted into the heater rod receiving groove, which makes the flash module more compact and allows for faster heat transfer.

[0012] Optionally, the heating block further includes a temperature sensor at the end of the metal block, which can more accurately and sensitively reflect the real-time temperature of the flash tube.

[0013] Optionally, the outer wall of the heater rod and the outer wall of the temperature sensor are both coated with metal foil, which can maintain consistent heat transfer between the components even in the presence of system or assembly tolerances. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a structural diagram of a heating module according to an embodiment of the present invention; [Figure 2] 3 is a structural diagram of a heating module according to an embodiment of the present invention with the cover plate removed; FIG. [Figure 3] 2 is a schematic diagram of the assembly structure of the heating block and flash tube according to an embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings. However, the described embodiments are only some of the embodiments of the present invention and do not cover all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative work are all within the scope of protection of the present invention.

[0016] Fig. 1 is a structural schematic diagram of a heating module 100 according to this embodiment. Fig. 2 is a structural schematic diagram of the heating module 100 according to this embodiment, with the cover plate 9 removed. Fig. 3 is an assembled structural schematic diagram of a heating block 1 and a flash tube 3.

[0017] Referring to FIG. 3, in this embodiment, the heating module 100 includes a heating block 1 and a flash tube 3, and an annular groove 2 is provided in the center of the heating block 1, which is a groove for accommodating the flash tube 3. Specifically, the flash tube 3 is wound within the annular groove 2.

[0018] 2, in the annular groove 2, the gap between the heating block 1 and the flash tube 3 is filled with solidified metal, forming a metal-filled section 4. When the heating block 1 is heated, heat is transferred to the flash tube 3 via the metal-filled section 4, and the liquid in the flash tube 3 is heated and vaporized.

[0019] In this embodiment, the space between the flash tube 3 and the heating block 1 is densely filled with the metal filling portion 4, so that heat transfer is more uniform and rapid, and the accuracy of temperature control is improved.

[0020] In this embodiment, a metal with a low melting point and small volume change during liquid-solid phase transition is selected as the material for the metal-filled portion 4, preferably tin. The metal is filled in a liquid state into the annular groove 2 around which the flash tube 3 is wound. Because the liquid metal is freely flowing, it flows into the gap between the heating block 1 and the flash tube 3, filling the gap. As the temperature drops, the liquid metal solidifies in the annular groove 2 to form the metal-filled portion 4. By fabricating the metal-filled portion 4 as described above, the metal-filled portion 4 maintains intimate contact with the flash tube 3 and heating block 1 as it did in the liquid state even after solidification. This allows the metal-filled portion 4 to contact the flash tube 3 and heating block 1 over a wider area, improving the thermal conductivity between the flash tube 3 and heating block 1, particularly the stability of temperature transfer.

[0021] In some embodiments, a metal with a low melting point can be selected, and the heating block 1 can be heated to a temperature above the melting point of the metal to melt it. During the heating process, the opening direction of the annular groove 2 is vertically upward to prevent the metal constituting the metal-filled portion 4 from leaking out even when melted. This prevents the metal in the metal-filled portion 4 from easily leaking out even when melted and is retained within the annular groove 2. Furthermore, referring to FIG. 1 , in this embodiment, the heating module 100 further includes a cover plate 9 that covers the notch of the annular groove 2 and is fixedly connected to the heating block 1. The cover plate 9 fixedly connected to the heating block 1 not only prevents the external thermal insulation material of the heating module 100 from contacting the metal-filled portion 4 but also prevents the metal-filled portion 4 from overflowing even when the annular groove 2 is vibrated after heating and melting it. In this embodiment, the cover plate 9 and the heating block 1 are connected with screws. Specifically, the annular groove 2 has four screw holes 11 with the same diameter evenly spaced around the periphery, and the cover plate 9 is screw-connected to the heating block 1 through these four screw holes 11.

[0022] In this embodiment, referring to FIG. 3 , the annular groove 2 is specifically annular and includes an outer annular wall portion 2a and an inner annular wall portion 2b spaced apart. The flash tube 3 is wound around the annular groove 2, specifically, by adhering it to the outer annular wall portion 2a, i.e., the radius of curvature of the winding is approximately the same as the radius of the outer annular wall portion 2a, thereby increasing the winding length and the contact area for heat transfer and reducing deformation of the passivation layer of the flash tube 3. Alternatively, the flash tube 3 may be adhering to the inner annular wall portion 2b, i.e., the radius of curvature of the winding is approximately the same as the radius of the inner annular wall portion 2b. The flash tube 3 may also be wound around the bottom of the annular groove 2 by adhering it to the bottom, or may be wound between the outer annular wall portion 2a and the inner annular wall portion 2b with a radius of curvature greater than the radius of the inner annular wall portion 2b but smaller than the radius of the outer annular wall portion 2a. This is not a limitation of this embodiment.

[0023] Typically, a passivation layer (not shown) is applied to the inner wall of the flash tube 3. The passivation layer is used to prevent the liquid in the flash tube 3 from corroding the inner wall of the flash tube 3 and to prevent the inner wall from adsorbing the sample. Preferably, to prevent the passivation layer from being damaged due to deformation during the winding process of the flash tube 3, in this embodiment, the flash tube 3 is installed in the annular groove 2 so that it is wound and attached to the outer annular wall portion 2a. This significantly increases the winding curvature radius of the flash tube 3 and reduces the possibility of the passivation layer of the flash tube 3 being deformed and damaged due to excessive winding.

[0024] In addition, the outer annular wall portion 2a can provide a larger winding space for the flash tube 3, which allows the flash tube 3 to have more length options depending on actual usage needs, and the outer annular wall portion 2a can provide a larger direct contact area with the flash tube 3, thereby improving the heat transfer effect between the two.

[0025] 2, the heating block 1 includes a metal block 1a, a heater rod groove 5a, a heater rod 6, a temperature sensor groove 5b, and a temperature sensor 7. The heater rod groove 5a and the temperature sensor groove 5b are located at the same end of the heating block 1, and are U-shaped grooves 5 that pass through the heating block 1 along their length. The opening of the heater rod groove 5a is specifically located on the side of the heating block 1, and the opening of the temperature sensor groove 5b is specifically located on the top surface of the heating block 1. The heater rod 6 is located in the heater rod groove 5a, and the temperature sensor 7 is located in the temperature sensor groove 5b. In particular, the temperature sensor 7 is located in the center of the temperature sensor groove 5b along the length of the temperature sensor groove 5b, thereby reducing the distance between the flash tube 3 and the temperature sensor groove 5b and improving the accuracy of temperature detection.

[0026] Both the heater rod 6 and the temperature sensor 7 are cylindrical, and to accommodate them, the bottom of the U-shaped groove 5 is formed in an arc shape, and the notch is linear and may have a certain degree of narrowing, which improves the stability and convenience of installing the heater rod 6 and the temperature sensor 7.

[0027] The metal foil 8 is coated on the outer wall surfaces of the heater rod 6 and the temperature sensor 7, and is in close contact with the heater rod 6 and the temperature sensor 7, respectively, so that the thickness of the metal foil 8 coated on different regions of the heater rod 6 is kept as uniform as possible. The outer diameters of the cylindrical bodies of the coated heater rod 6 and the temperature sensor 7 approximately match the inner diameters of the heater rod receiving groove 5a and the temperature sensor receiving groove 5b, respectively, and the metal foil 8 has a certain ductility, allowing the heater rod 6 and the temperature sensor 7 to fit tightly and be fixed in the heater rod receiving groove 5a and the temperature sensor receiving groove 5b, respectively. Even if there is a certain degree of system tolerance or assembly tolerance, the metal foil 8 can maintain stable heat conduction between each component. This method of forming grooves to fix the heater rod 6 and the temperature sensor 7 makes the structure of the heating module 100 more compact, facilitates faster heat transfer, and allows the temperature sensor to more accurately and sensitively reflect the real-time temperature of the flash tube 3.

[0028] In this embodiment, the cover plate 9 covers not only the top of the annular groove 2 but also the side opening of the U-shaped groove 5. The cover plate 9 has a top plate and a side plate that are integrally folded. The dimensions of the top plate match the dimensions of the top surface of the heating block 1 and are positioned to correspond to the edges of the top surface of the heating block 1, allowing the top plate to completely cover the top opening of the annular groove 2 and the top opening of the temperature sensor receiving groove 5b. The dimensions of the side plates match the dimensions of the side surfaces of the heating block 1 and are positioned to correspond to the edges of the side surfaces of the heating block 1 and are positioned to correspond to the edges of the side surfaces of the heating block 1, allowing the side plates to completely cover the side opening of the heater rod receiving groove 5a. With the above-mentioned configuration, the cover plate 9 can regulate the positions of the heater rod 6 and the temperature sensor 7 and prevent them from falling off the sides of the heating block 1.

[0029] The heating module 100 of this embodiment can be applied to a vaporizer, which can be connected to a gas chromatograph as a sample pretreatment device for the gas chromatograph to quickly evaporate a liquid sample into a gas sample and measure the content of different components in the sample. The heating module 100 of this embodiment has better heat conduction performance, so that different components in the sample can all be quickly evaporated into gas within essentially the same relatively short time, thereby improving the detection accuracy of the component content.

[0030] The above is merely a preferred embodiment of the present invention, and does not limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall fall within the scope of protection of the present invention. [Explanation of symbols]

[0031] 100 - heating module, 1 - heating block, 1a - metal block, 2 - annular groove, 2a - outer annular wall portion, 2b - inner annular wall portion, 3 - flash tube, 4 - metal filling portion, 5 - U-shaped groove, 5a - heater rod accommodating groove, 5b - temperature sensor accommodating groove, 6 - heater rod, 7 - temperature sensor, 8 - metal foil, 9 - cover plate, 10 - screw, 11 - screw hole.

Claims

1. A heating module, a heating block having a groove; a flash tube disposed within the groove; a metal filler disposed within the groove and filling a gap between the heating block and the flash tube.

2. 2. The heating module according to claim 1, wherein the metal filling portion is formed by filling the groove with liquid metal and solidifying it.

3. 3. The heating module of claim 2, wherein the liquid metal is tin, zinc, or aluminum.

4. 3. The heating module of claim 2, wherein the groove is an annular groove, the annular groove including an inner annular wall portion and an outer annular wall portion spaced apart, and the flash tube is wound around and attached to the outer annular wall portion.

5. 3. The heating module of claim 2, wherein the groove extends vertically and the notch of the groove is located at the top of the groove.

6. The heating module of claim 5 , further comprising a cover plate covering the notch of the groove and fixedly connected to the heating block.

7. The heating block is A metal block and a heater rod receiving groove provided at an end of the metal block; 2. The heating module according to claim 1, further comprising a heater rod fitted in the heater rod receiving groove.

8. 8. The heating module of claim 7, wherein the heating block further comprises a temperature sensor provided at the end of the metal block.

9. 9. The heating module according to claim 8, wherein the outer wall of the heater rod and the outer wall of the temperature sensor are both covered with metal foil.

10. A vaporizer comprising a heating module according to any one of claims 1 to 9.

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