Electric heating element supporting plate and electric heater

Abstract

The utility model belongs to the technical field of electric heaters, and particularly discloses an electric heating element supporting plate and an electric heater. The electric heating element supporting plate comprises a plate body, a plurality of supporting holes are formed in the plate body, the supporting holes correspond to the electric heating elements in a one-to-one mode, the electric heating elements are arranged in the supporting holes in a penetrating mode, and the supporting holes can be used for supporting the electric heating elements. According to the utility model, the supporting holes are formed in the plate body, so that stable supporting and ordered arrangement of the electric heating elements are realized, local temperature rise caused by mutual contact of the tail sections of the electric heating elements is avoided, meanwhile, the electric heating elements are prevented from being easily damaged, and the service life of the electric heating elements is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric heater technology, and in particular to an electric heating element support plate and an electric heater. Background Technology

[0002] The heating core of a cluster flange electric heater typically consists of multiple U-shaped heating elements arranged in concentric circles (clockwise or counterclockwise). For high-power heating elements with high surface load and long lengths (heating section ≥ 3000 mm), several bow-shaped baffles are added in the middle. These baffles increase the flow velocity of the fluid outside the tube, forcing the fluid to flow through multiple bends along a predetermined path, thereby improving heat exchange efficiency. The baffles also provide some support for the heating elements. When the heating elements are too long and the compressive stress they bear is too high, increasing the number of baffles and decreasing their spacing, while still meeting the heater's allowable pressure drop, can help alleviate the stress on the heating elements and prevent fluid flow-induced vibrations.

[0003] In traditional bow-shaped baffle designs, the heating elements extend a transitional length after passing through the last baffle, causing them to easily stick together. This sticking can lead to localized high temperatures at the contact points, exceeding the maximum designed surface temperature of the heating elements, which can easily cause them to burst and affect the normal operation of the entire heater. Existing technologies typically address this problem by increasing the number of baffles and shortening the extension length of the heating elements on the last baffle. However, this approach increases the pressure drop of the medium after passing through the heater, resulting in insufficient pressure and affecting subsequent processes. Therefore, the applicant proposes a heating element support plate and an electric heater. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an electric heating element support plate and an electric heater to solve the problem that the tail sections of the electric heating elements in the prior art are easily stuck together, causing damage to the electric heating elements.

[0005] To achieve the above and other related objectives, this utility model provides an electric heating element support plate, including a plate body with a plurality of support holes. Each support hole corresponds to an electric heating element, and the electric heating element passes through the support hole. The support hole is used to support the electric heating element.

[0006] Optionally, the support hole is a through hole, and the depth of the support hole is consistent with the thickness of the plate.

[0007] Optionally, the electric heating element has a cylindrical cross-section and a U-shaped bend. The support hole includes a strip-shaped portion and an arc-shaped portion. The arc-shaped portion is opened at both ends of the strip-shaped portion in the length direction, and the outer wall of the electric heating element is engaged with the inner wall of the arc-shaped portion.

[0008] Optionally, the plate is circular.

[0009] Optionally, with the radius of the plate as the length, the center of the plate is provided with multiple sets of support holes along the edge direction of the plate.

[0010] Optionally, the support holes are inclined, and each group of support holes is evenly arranged in a counterclockwise direction.

[0011] Optionally, the number of support holes in each group increases sequentially from the inside to the outside along the radial direction of the plate.

[0012] This utility model also proposes an electric heater, including a housing and the aforementioned electric heating element support plate. One end of the housing is provided with a flange, and the electric heating element is installed on the flange. The electric heating element is located inside the housing, and the plate is fixed to the end of the electric heating element away from the flange. The plate is located inside the housing.

[0013] Optionally, the electric heating element is provided with multiple baffles, with the baffle furthest from the flange as the target baffle, and the electric heating element is disposed on the side of the target baffle away from the flange.

[0014] Optionally, the housing is provided with a feed inlet and a discharge outlet.

[0015] As described above, the electric heating element support plate and electric heater proposed in this utility model have the following beneficial effects:

[0016] (1) In this utility model, the support holes provided on the plate body realize the stable support and orderly arrangement of the electric heating elements. The support holes on the plate body correspond one-to-one with the electric heating elements. The electric heating elements are inserted into the support holes. Compared with the prior art, this utility model can effectively fix the position of the electric heating elements and prevent them from shifting or shaking during operation. At the same time, it can support the tail section of the electric heating elements to avoid the tail sections of the electric heating elements from contacting each other and causing local temperature rise. It also avoids the electric heating elements from being easily damaged and improves the service life of the electric heating elements.

[0017] (2) In this utility model, the support holes make it easier to install and disassemble the electric heating element. During installation, the plate can be directly passed through the tail section of the corresponding electric heating element without having to install it from the opening end of the electric heating element, which reduces the difficulty of plate installation and saves installation time. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of the plate body in one embodiment of this utility model.

[0019] Figure 2 The image shown is an enlarged view of point A in one embodiment of this utility model.

[0020] Figure 3 The diagram shows a structural schematic of the connection between the electric heating element and the support hole in one embodiment of the present invention.

[0021] Figure 4 The diagram shown is a schematic of an electric heater in one embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Plate body, 2. Support hole, 201. Strip section, 202. Flange, 3. Housing, 4. Electric heating element, 5. First baffle plate, 6. Second baffle plate, 7. Inlet, 8. Outlet. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0025] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0026] like Figures 1-4 As shown, this utility model proposes an electric heating element support plate and an electric heater.

[0027] In an exemplary embodiment, the electric heating element support plate includes a plate body 1, on which a plurality of support holes 2 are provided. Each support hole 2 corresponds to an electric heating element 5, and the electric heating element 5 passes through the support hole 2. The support hole 2 can be used to support the electric heating element 5.

[0028] In this embodiment, the support holes 2 provided on the plate 1 achieve stable support and orderly arrangement of the electric heating elements 5. The support holes 2 on the plate 1 correspond one-to-one with the electric heating elements 5, and the electric heating elements 5 pass through the support holes 2. Compared with the prior art, this utility model can effectively fix the position of the electric heating elements 5, prevent them from shifting or shaking during operation, and at the same time support the tail section of the electric heating elements 5, avoid the tail sections of the electric heating elements 5 from contacting each other and causing local temperature rise, avoid easy damage to the electric heating elements 5, and improve the service life of the electric heating elements 5.

[0029] Meanwhile, the support hole 2 in this embodiment makes it easier to install and remove the electric heating element 5. During installation, the plate 1 can be directly passed through the tail section of the electric heating element 5 without having to install it from the opening end of the electric heating element 5, which reduces the difficulty of the plate 1 installation process and saves installation time.

[0030] It is worth noting that the plate 1 is a circular plate with a certain thickness. The shape of the plate 1 can be adapted to the shell 4 of the electric heater. In a specific embodiment, a square plate can also be used. At the same time, in this embodiment, since the plate 1 will support multiple electric heating elements 5, the plate 1 can be thickened to improve the strength of the plate 1 and make the support of the electric heating elements 5 more stable.

[0031] In an exemplary embodiment, the support hole 2 is a through hole, and the depth of the support hole 2 is consistent with the thickness of the plate 1.

[0032] In this embodiment, the support hole 2 is a through hole, so that the electric heating element 5 can pass directly through the support hole 2.

[0033] For example, the electric heating element 5 has a cylindrical cross-section and a U-shaped bend. The support hole 2 includes a strip-shaped portion 201 and an arc-shaped portion 202. The arc-shaped portion 202 is formed at both ends of the strip-shaped portion 201 along its length. The outer wall of the electric heating element 5 engages with the inner wall of the arc-shaped portion 202. During installation, since the end of the electric heating element 5 is a U-shaped bend, and the support hole 2 is generally elongated, aligning the support hole 2 with the U-shaped bend allows the plate 1 to be fastened onto multiple electric heating elements 5, thereby achieving rapid positioning and fixation.

[0034] It is worth noting that in this embodiment, in order to ensure the fixing effect and avoid friction between the electric heating element 5 and the inner wall of the support hole 2, the maximum distance of the support hole 2 is set to be slightly smaller than the maximum width of the electric heating element 5. Therefore, when installing the plate 1, since the end of the electric heating element 5 is a U-shaped bend, its width gradually increases. During the movement of the plate 1, the electric heating element 5 will undergo slight deformation, so that the electric heating element 5 is tightly stuck in the support hole 2. Even if the electric heating element 5 is impacted by high-speed fluid, the relative displacement between the inner wall of the support hole 2 and the outer wall of the electric heating element 5 is small, and the corresponding friction is small, which avoids wear of the electric heating element 5 under long-term use and improves the service life of the electric heating element 5.

[0035] It should also be noted that in this embodiment, the support hole 2 mainly fixes the electric heating element 5 through the arc-shaped portion 202, while the strip-shaped portion 201 between the arc-shaped portions 202 is mainly used for the flow of raw materials, such as... Figure 4 As shown, when the raw material enters the housing 4 from the feed port 8, in order to ensure the pressure effect, the raw material can freely pass through the plate 1 from the strip section 201, thereby ensuring the flow effect of the raw material.

[0036] like Figure 1 As shown, in an exemplary embodiment, with the radius of the plate 1 as its length, a plurality of sets of support holes 2 are provided at the center of the plate 1 along the edge direction of the plate 1. In this embodiment, the support holes 2 are inclined, and each set of support holes 2 is uniformly arranged in a counterclockwise direction. At the same time, the number of support holes 2 in each set increases sequentially from the inside to the outside along the radial direction of the plate 1.

[0037] In this embodiment, the plate 1 is provided with four sets of support holes 2. The number of support holes 2 increases from the inside to the outside. The inclination angle of each set of support holes 2 is different. Combined with the different areas of each set of support holes 2 on the plate 1, the number of support holes 2 on the outer layer can be set to be more. However, the specific number of support holes 2 is determined according to the number of electric heating elements 5. If the number of electric heating elements 5 is small, the remaining parts can be set to be hollowed out to facilitate the rapid passage of raw materials and avoid reducing the pressure of the raw materials.

[0038] This utility model also proposes an electric heater, which includes a housing 4 and the aforementioned electric heating element support plate. One end of the housing 4 is provided with a flange 3, and the electric heating element 5 is installed on the flange 3. The electric heating element 5 is located inside the housing 4. The plate 1 is fixed to the end of the electric heating element 5 away from the flange 3. The plate 1 is located inside the housing 4. The housing 4 is provided with an inlet 8 and an outlet 9. The inlet 8 and the outlet 9 are both located on the side wall of the housing 4. The inlet 8 is close to the right end of the housing 4, and the outlet 9 is close to the left end of the housing 4. After the raw material enters the housing 4 through the inlet 8, it passes through the support hole 2 on the plate 1, and after being deflected by the baffle plate, it exchanges heat fully with the electric heating element 5 and is discharged from the outlet 9.

[0039] For example, the electric heating element 5 is provided with multiple baffles, wherein the baffles include a first baffle 6 and a second baffle 7. The first baffle 6 is disposed at the upper part inside the housing 4 to fix the upper half of the electric heating element 5 and to obstruct the flow in the upper half of the channel. The second baffle 7 is disposed at the lower part inside the housing 4 to fix the lower half of the electric heating element 5 and to obstruct the flow in the lower half of the channel. In a specific embodiment, the baffle farthest from the flange 3 is taken as the target baffle, and the electric heating element 5 is disposed on the side of the target baffle away from the flange 3. In some specific embodiments, such as Figure 4 As shown, the baffle plate at the far right is the target baffle plate. The flange 3 is installed at the left end of the housing 4. Therefore, the plate 1 is installed on the right side of the target baffle plate and is engaged and fixed with multiple electric heating elements 5. The raw material flow direction is the direction indicated by the arrow.

[0040] In summary, the present invention achieves stable support and orderly arrangement of the electric heating element 5 by providing support holes 2 on the plate 1, avoiding local temperature rise caused by the tail sections of the electric heating element 5 coming into contact with each other, and at the same time preventing the electric heating element 5 from being easily damaged, thus improving the service life of the electric heating element 5.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An electrical heating element support plate, characterized by, The plate body is provided with a plurality of support holes corresponding to the electric heating elements, the electric heating elements are arranged in the support holes, and the support holes can be used to support the electric heating elements.

2. The electrical heating element support plate of claim 1, wherein: The support hole is a through hole, and the depth of the support hole is consistent with the thickness of the plate body.

3. The electrical heating element support plate of claim 2, wherein: The cross section of the electric heating element is cylindrical, the electric heating element is U-shaped, the support hole includes a strip-shaped part and an arc-shaped part, the arc-shaped part is arranged at both ends of the strip-shaped part in the length direction, and the outer wall of the electric heating element is connected with the inner wall of the arc-shaped part.

4. The electrical heating element support plate of claim 1, wherein: The plate body is circular.

5. The electrical heating element support plate of claim 4, wherein: A plurality of groups of support holes are arranged along the center of the plate body to the edge of the plate body.

6. The electrical heating element support plate of claim 5, wherein: The support holes are arranged in an inclined manner, and each group of support holes is arranged in a counterclockwise direction.

7. The electrical heating element support plate of claim 5, wherein: The number of support holes in each group increases from the inside to the outside along the radius direction of the plate body.

8. An electric heater, characterized by The electric heating element support plate comprises a shell and an electric heating element support plate according to any one of claims 1-7, one end of the shell is provided with a flange, the electric heating element is arranged on the flange, the electric heating element is arranged in the shell, the plate body is fixed at one end of the electric heating element away from the flange, and the plate body is arranged in the shell.

9. An electric heater as claimed in claim 8, wherein: A plurality of baffles are arranged on the electric heating element, and the baffle farthest from the flange is a target baffle, and the electric heating element is arranged on one side of the target baffle away from the flange.

10. An electric heater as claimed in claim 8, wherein: The shell is provided with an inlet and an outlet.

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