Flow guide piece and heating pipe

Abstract

The invention relates to the technical field of heaters, in particular to a flow guide part and a heating pipe. The flow guide part comprises multiple layers of flow guide baffles which are sequentially distributed in the preset direction. A first connecting part and a second connecting part are formed on each layer of flow guide baffle, the first connecting parts are located on the sides, in the preset direction, of the flow guide baffles, the second connecting parts are located on the sides, away from the preset direction, of the flow guide baffles, and the first connecting parts and the second connecting parts extend inwards. In any two adjacent layers of flow guide baffles, the first connecting part of one layer of flow guide baffle is spirally connected with the second connecting part of the other layer of flow guide baffle, so that the multiple layers of flow guide baffles are connected to form a spiral flow channel, specifically, one layer of flow guide baffle is located at the upstream of the preset direction, and the other layer of flow guide baffle is located at the downstream of the preset direction. According to the flow guide piece, the heat exchange efficiency of fluid in the flow guide piece can be improved, and meanwhile the scaling rate of the fluid in the flow guide baffle is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heaters, and in particular to a flow guide and a heating tube. Background Art

[0002] As a component that converts electrical energy into thermal energy, the heating tube is widely used in various heating equipment. A guide column is usually set in the heating tube. The heating tube generates heat by energizing the resistance wire, and transfers the heat to the fluid in the guide column through the heating tube. The guide column can change the flow path and state of the fluid, thereby optimizing the heat conduction performance between the heating tube and the fluid and improving the heating efficiency.

[0003] The existing guide column usually forms baffles at intervals on the outer wall of the center column to change the flow path and state of the fluid. However, when the heated fluid flows through the center column, the impurities in the fluid are easily deposited on the center column due to changes in flow velocity and fluid state, resulting in a high scaling rate at the center column of the guide column. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a guide member and a heating tube, which can improve the heat exchange efficiency of the fluid in the guide member and effectively reduce the scaling rate of the fluid in the guide baffle.

[0005] In order to solve the above technical problems, the present invention provides a flow guide, comprising a plurality of flow guide baffles, the plurality of flow guide baffles are sequentially distributed along a predetermined direction, each layer of the flow guide baffles is formed with a first connection portion and a second connection portion, the first connection portion is located on one side of the flow guide baffle along the predetermined direction, the second connection portion is located on a side of the flow guide baffle away from the predetermined direction, and the first connection portion and the second connection portion extend inwardly;

[0006] In any two adjacent layers of the guide baffles, the first connecting portion of one layer of the guide baffles is spirally connected to the second connecting portion of the other layer of the guide baffles, so that the multiple layers of the guide baffles are connected to form a spiral flow channel, wherein one layer of the guide baffles is located upstream of the predetermined direction, and the other layer of the guide baffles is located downstream of the predetermined direction.

[0007] The wall thickness of the first connecting portion is equal to the wall thickness of the second connecting portion, and the wall thickness of the first connecting portion and the wall thickness of the second connecting portion are greater than the wall thickness of the guide baffle.

[0008] Wherein, the first connecting part and the second connecting part each form a first wall on one side away from the predetermined direction, and the guide baffle each form a second wall on one side away from the predetermined direction, wherein the first wall of the first connecting part, the first wall of the second connecting part and the second wall are all in the same plane.

[0009] Wherein, a spacing distance is formed between two adjacent guide baffles, and the spacing distance is greater than or equal to the sum of the thicknesses of the first connecting portion and the second connecting portion.

[0010] Wherein, a preset angle is formed between two adjacent guide baffles.

[0011] Wherein, the cross section of the guide baffle forms a preset diameter, and the ratio between the preset diameter and the spacing distance is 5:1.

[0012] Wherein, the guide baffle is made of stainless steel.

[0013] Correspondingly, the present invention also provides a heating tube, which includes a tube body and any one of the flow guides described above, wherein the tube body forms a fluid cavity, the flow guide is located in the fluid cavity, and the flow guide abuts against the inner wall surface of the tube body.

[0014] Among them, a water inlet is formed at one end of the tube body, and a water outlet is formed at the other end of the tube body. One end of the guide member abuts against the inner wall of one end of the tube body, and the other end of the guide member abuts against the inner wall of the other end of the tube body. The water inlet and the water outlet are connected to the spiral flow channel.

[0015] Wherein, a protective fillet is provided on one side of the guide baffle facing the inner wall surface of the tube body.

[0016] The implementation of the present invention has the following beneficial effects:

[0017] According to the guide member provided in this embodiment, the first connecting portion and the second connecting portion of the guide baffle are extended inwardly, and then the two adjacent layers of guide baffles are spirally connected using the first connecting portion and the second connecting portion, so that the guide member formed by connecting the multiple layers of guide baffles has a spiral flow channel, so that there is no need to use a center column to connect the guide baffles inside the guide member, and the internal space of the guide member can be used as a flow channel for fluid transportation, which effectively increases the size of the spiral flow channel, and then increases the fluid flow rate in the flow channel of the guide member, effectively improving the heat exchange efficiency of the fluid in the guide member.

[0018] At the same time, since the multiple layers of guide baffles are directly connected to each other to form a guide piece, the cross-section of the spiral flow channel in the guide piece will not change due to the central column, thereby ensuring that the fluid flow rate in the spiral flow channel will not decrease, reducing the deposition of suspended matter or impurities in the fluid in the guide baffle, thereby effectively reducing the scaling rate of the fluid in the guide baffle and reducing the frequency of cleaning the guide piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a schematic diagram of the three-dimensional structure of the flow guide member of the present invention;

[0020] Figure 2 is a schematic diagram of the main structure of the flow guide of the present invention;

[0021] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure along the AA section line;

[0022] Figure 4 It is a schematic plan view of the connection position of two adjacent layers of guide baffles of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0024] The flow guide of the present invention can improve the heat exchange efficiency of the fluid in the flow guide while reducing the deposition of suspended matter or impurities in the fluid in the flow guide baffle 1, thereby effectively reducing the scaling rate of the fluid in the flow guide baffle 1.

[0025] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the guide member includes a plurality of guide baffles 1, and the plurality of guide baffles 1 are sequentially distributed along a predetermined direction, wherein the predetermined direction is the length extension direction of the guide member (i.e. Figure 1 In the direction from top to bottom in the figure). Each layer of guide baffle 1 is formed with a first connection portion 11 and a second connection portion 12, the first connection portion 11 is located on one side of the guide baffle 1 along the predetermined direction, the second connection portion 12 is located on the side of the guide baffle 1 away from the predetermined direction, and the first connection portion 11 and the second connection portion 12 extend inward. In any two adjacent layers of guide baffles 1, the first connection portion 11 of one layer of guide baffles 1 is spirally connected to the second connection portion 12 of the other layer of guide baffles 1, so that the multiple layers of guide baffles 1 are connected to form a spiral flow channel, specifically, one layer of guide baffles 1 is located upstream of the predetermined direction, and the other layer of guide baffles 1 is located downstream of the predetermined direction.

[0026] According to the guide member provided in this embodiment, the first connecting portion 11 and the second connecting portion 12 of the guide baffle 1 are extended inwardly, and then the two adjacent layers of the guide baffles 1 are spirally connected using the first connecting portion 11 and the second connecting portion 12, so that the guide member formed by connecting the multiple layers of the guide baffles 1 has a spiral flow channel, so that there is no need to use a center column to connect the guide baffles 1 inside the guide member, and the internal space of the guide member can be used as a flow channel for fluid transportation, which effectively increases the size of the spiral flow channel, thereby increasing the fluid flow rate in the flow channel of the guide member, and effectively improving the heat exchange efficiency of the fluid in the guide member.

[0027] At the same time, since the multiple layers of guide baffles 1 are directly connected to each other to form a guide piece, the cross-section of the spiral flow channel in the guide piece will not change due to the central column, thereby ensuring that the fluid flow rate in the spiral flow channel will not decrease, reducing the deposition of suspended matter or impurities in the fluid in the guide baffle 1, thereby effectively reducing the scaling rate of the fluid in the guide baffle 1 and reducing the frequency of cleaning the guide piece.

[0028] Preferably, in this embodiment, the multiple layers of guide baffles 1 are integrally formed with each other, and can be specifically injection molded by a mold of a specific shape to simplify the molding process of the guide member.

[0029] In order to ensure the structural stability of the multi-layer guide baffles 1 when they are connected to each other, Figure 2 and Figure 4 As shown, the wall thickness of the first connection part 11 is equal to the wall thickness of the second connection part 12, and the wall thickness of the first connection part 11 and the wall thickness of the second connection part 12 are greater than the wall thickness of the guide baffle 1. Therefore, when two adjacent layers of guide baffles 1 are connected, the connection part of the first connection part 11 and the second connection part 12 can disperse more stress due to the larger wall thickness, and ensure that the stress distribution of the connection part is more uniform, thereby reducing the stress concentration phenomenon, reducing the structural strength of the guide member affected by excessive local stress, and ensuring that the guide member can withstand the pressure applied to the connection part of the guide baffle 1 when the fluid flows in the spiral flow channel.

[0030] In this embodiment, the thickness of the guide baffle 1 is 1mm-2mm, wherein the thickness of the guide baffle 1 is preferably 1mm, to ensure that the guide baffle 1 can withstand the fluid pressure while reducing the volume of the guide member. The thickness of the first connection portion 11 and the second connection portion 12 can be selected and set according to actual conditions. For example, when the thickness of the guide baffle 1 is 1mm, the thickness of the first connection portion 11 and the second connection portion 12 can be 1.1mm. Of course, the sum of the thickness of the guide baffle 1 and the thickness of the first connection portion 11 and the second connection portion 12 is not limited thereto, as long as the structural stability of the guide member can be ensured when multiple layers of guide baffles 1 are connected to each other.

[0031] Furthermore, to further ensure that the fluid flow rate in the spiral flow channel is not disturbed, as Figure 4 As shown, a first wall 13 is formed on the side of the first connection portion 11 and the second connection portion 12 that are away from the predetermined direction, and a second wall 14 is formed on the side of the guide baffle 1 that is away from the predetermined direction, wherein the first wall 13 of the first connection portion 11, the first wall 13 and the second wall 14 of the second connection portion 12 are all in the same plane.

[0032] It can be understood that when the first connecting part 11 and the second connecting part 12 connect two adjacent layers of guide baffles 1, since the first wall 13 of the first connecting part 11 and the first wall 13 and the second wall 14 of the second connecting part 12 are all in the same plane, there is no convex structure on the side of the connecting part between the two adjacent layers of guide baffles 1 facing the fluid, so that the fluid can encounter as few obstacles and disturbances as possible when flowing in the spiral flow channel, so as to improve the fluid flow efficiency while reducing the change in fluid velocity and the generation of vortices, further ensuring that the connecting structure will not increase the scaling rate of the guide baffle 1.

[0033] It should be noted here that the wall thickness of the first connecting part 11 and the second connecting part 12 away from the first wall 13 gradually increases, so that the wall surface of the first connecting part 11 and the second connecting part 12 away from the first wall 13 forms a smoothly transitioned outer boss structure, so as to ensure that the thickness of the first connecting part 11 and the second connecting part 12 is greater than the thickness of the guide baffle 1, while reducing the eddy current and resistance generated when the fluid passes through the connecting part, so as to further improve the fluid flow efficiency and avoid increasing the scaling rate of the guide baffle 1.

[0034] There is a spacing distance d between two adjacent layers of guide baffles 1, and the spacing distance d is greater than or equal to the sum of the thicknesses of the first connection portion 11 and the second connection portion 12. Preferably, the spacing distance d between two adjacent guide baffles 1 is 4 mm, so as to ensure that the spiral flow channel between the two adjacent guide baffles 1 can have a certain width, so that the spiral flow channel of the guide element can have a certain water flow rate, further reduce the turbulence or eddy flow phenomenon generated during the flow of the fluid, and maintain the pressure distribution of the fluid in the spiral flow channel, so that the layer stringing phenomenon in the spiral flow channel can be reduced to a certain extent after the guide element is installed in the heating element.

[0035] Furthermore, a preset angle α is formed between two adjacent layers of guide baffles 1. In this embodiment, the preset angle α between two adjacent guide baffles 1 is 9°-10°, wherein the preset angle α is preferably 9.7°. After the multiple layers of guide baffles 1 are spirally connected to form a guide member, the spiral flow channel between two adjacent layers of guide baffles 1 can have a sufficiently large flow channel width, further ensuring the water flow rate of the spiral flow channel; at the same time, the guide baffle 1 has a certain inclination angle, thereby ensuring that the fluid can have a certain water impulse in the spiral flow channel, further reducing the water flow phenomenon in the spiral flow channel.

[0036] Among them, Figure 2 and Figure 3 As shown, the cross section of the guide baffle 1 forms a preset diameter D, and the ratio between the preset diameter D and the spacing distance d is 5:1. For example, when the spacing distance d between two adjacent guide baffles 1 is 4 mm, the cross section diameter of the guide baffle 1 is 20 mm.

[0037] It is understandable that, since the guide member is not provided with a central column, the cross-sectional area of ​​the spiral flow channel is determined by the radius of the guide baffle 1 and the spacing distance d between two adjacent layers of guide baffles 1. By setting the cross-sectional diameter of the guide baffle 1 to 5 times the spacing distance d between adjacent guide baffles 1, the effective space occupancy rate of the spiral flow channel in the guide member is increased, the water flow rate of the spiral flow channel is further optimized, and the heat exchange efficiency of the fluid in the spiral flow channel is further increased, so that the heat energy conversion of the guide column is more comprehensive.

[0038] Among them, the guide baffle 1 is made of stainless steel material to improve the corrosion resistance and impact resistance of the guide baffle 1, so that the guide piece can be used for a long time in various corrosive environments without being damaged, while ensuring that the guide piece can withstand greater water flow impact force and pressure, maintain the stability of the shape and structure of the guide piece, and reduce the deformation of the guide piece caused by stamping.

[0039] Correspondingly, the present invention also provides a heating tube, which includes a tube body and a flow guide as described in any one of the above embodiments, wherein the tube body is formed with a fluid cavity, the flow guide is located in the fluid cavity, and the flow guide abuts against the inner wall surface of the tube body. The heating tube has all the beneficial effects of the above-mentioned flow guide, which will not be repeated here. At the same time, when the fluid flows into the flow guide cavity, the fluid passes through the guiding effect of the spiral flow channel in the flow guide, which increases the contact time and contact area between the fluid and the tube body, thereby increasing the heating efficiency of the heating tube for the fluid.

[0040] Specifically, a water inlet is formed at one end of the tube body, and a water outlet is formed at the other end of the tube body. One end of the guide member abuts against the inner wall of one end of the tube body, and the other end of the guide member abuts against the inner wall of the other end of the tube body. The water inlet and the water outlet are connected with the spiral flow channel to facilitate the input of the fluid into the spiral flow channel, thereby ensuring the heating efficiency of the heating tube on the fluid.

[0041] It should be noted here that the number of layers of the guide baffles 1 in the guide member needs to be set according to the length of the tube body. When the length of the tube body increases, the number of layers of the guide baffles 1 increases accordingly to adapt to the length of the tube body. At the same time, the length of the spiral flow channel increases, which increases the flow rate of the fluid and thereby increases the thermal efficiency of the guide member and the methylcobalamin tube.

[0042] Among them, Figures 1 to 3As shown, a protective fillet 15 is provided on the side of the guide baffle 1 facing the inner wall of the tube body to ensure smooth abutment between the guide baffle 1 and the inner wall of the tube body, which can effectively reduce the stress change at the abutment position between the guide baffle 1 and the inner wall of the tube body when the heating tube heats the fluid, thereby reducing the risk of damage to the guide baffle 1 or the heating tube.

[0043] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A flow guide, characterized in that: The invention comprises a plurality of flow guide baffles, wherein the plurality of flow guide baffles are sequentially distributed along a predetermined direction, and each layer of the flow guide baffles is formed with a first connection portion and a second connection portion, wherein the first connection portion is located at one side of the flow guide baffle along the predetermined direction, and the second connection portion is located at a side of the flow guide baffle away from the predetermined direction, and the first connection portion and the second connection portion extend inwardly; In any two adjacent layers of the guide baffles, the first connecting portion of one layer of the guide baffles is spirally connected to the second connecting portion of the other layer of the guide baffles, so that the multiple layers of the guide baffles are connected to form a spiral flow channel, wherein one layer of the guide baffles is located upstream of the predetermined direction, and the other layer of the guide baffles is located downstream of the predetermined direction.

2. The flow guide according to claim 1, characterized in that: The wall thickness of the first connecting portion is equal to the wall thickness of the second connecting portion, and the wall thickness of the first connecting portion and the wall thickness of the second connecting portion are greater than the wall thickness of the guide baffle.

3. The flow guide according to claim 2, characterized in that: The first connecting portion and the second connecting portion each form a first wall on one side away from the predetermined direction, and the guide baffle forms a second wall on one side away from the predetermined direction, wherein the first wall of the first connecting portion, the first wall of the second connecting portion, and the second wall are all in the same plane.

4. The flow guide according to claim 2, characterized in that: A spacing distance is formed between two adjacent guide baffles, and the spacing distance is greater than or equal to the sum of the thicknesses of the first connecting portion and the second connecting portion.

5. The flow guide according to claim 4, characterized in that: A preset angle is formed between two adjacent guide baffles.

6. The flow guide according to claim 4, characterized in that: The cross section of the guide baffle forms a preset diameter, and the ratio between the preset diameter and the spacing distance is 5:

1.

7. The flow guide according to claim 1, characterized in that: The guide baffle is made of stainless steel.

8. A heating tube, characterized in that: The heating tube comprises a tube body and the flow guide member according to any one of claims 1 to 7, wherein the tube body forms a fluid cavity, the flow guide member is located in the fluid cavity, and the flow guide member abuts against the inner wall surface of the tube body.

9. The heating tube according to claim 8, characterized in that: A water inlet is formed at one end of the tube body, and a water outlet is formed at the other end of the tube body. One end of the guide member abuts against the inner wall of one end of the tube body, and the other end of the guide member abuts against the inner wall of the other end of the tube body. The water inlet and the water outlet are connected to the spiral flow channel.

10. The heating tube according to claim 8, characterized in that: A protective fillet is provided on one side of the guide baffle facing the inner wall surface of the tube body.

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