A uniquely shaped ceramic heater

Abstract

This application relates to the technical field of industrial heating equipment, and in particular to an irregularly shaped ceramic heater, comprising a ceramic ring with a through-slot, the through-slot being parallel to the axial direction of the ceramic ring; and a heating wire inserted into the through-slot, the through-slot being an open loop, the size of which is smaller than the diameter of the heating wire. This application has the effect of reducing the possibility of short circuits caused by contact between the heating wires.

Description

Technical Field

[0001] This application relates to the technical field of industrial heating equipment, and in particular to a non-circular ceramic heater. Background Technology

[0002] Ceramic heaters are high-efficiency heaters with uniform heat distribution. They are metal alloys with excellent thermal conductivity, ensuring uniform surface temperature and eliminating hot and cold spots in the equipment. They have advantages such as long service life, good heat preservation performance, strong mechanical properties, corrosion resistance, and magnetic field resistance, and are widely used in heating fields such as injection molding machines, plastics machines, and blow molding machines.

[0003] Currently, ceramic heaters are cylindrical, consisting of a heating coil and an outer shell. Both the heating coil and the outer shell are annular and fixedly connected. The outer shell has a mounting groove. A heating layer is provided between the heating coil and the outer shell, and an insulation layer is provided between the heating layer and the outer shell. Both the insulation layer and the heating layer are fixed in the mounting groove and fixedly connected to the groove wall. When heating is performed, the workpiece to be heated is placed inside the heating coil. The heating layer heats up, and the heat from the heating layer is transferred to the workpiece through the heating coil. At the same time, the insulation layer retains the heat generated by the heating layer, thereby achieving the heating operation of the workpiece.

[0004] Existing heating layers typically consist of an alloy heating wire wound around the outside of a heating coil. To ensure sufficient heat output, the heating wire's length is usually increased. Therefore, when installing the heating wire, it is bent into a snake shape using a bending tool and distributed on one side of the heating layer before the heating layer is placed around the outside of the heating coil. However, the surface of the heating wire is not insulated. If the heating wires come into contact with each other during vibration, causing a short circuit, the resistance decreases, leading to an increase in local power and causing the heating wire to burn out. Utility Model Content

[0005] To reduce the possibility of short circuits caused by contact between heating wires, this application provides an irregularly shaped ceramic heater.

[0006] This application provides an irregularly shaped ceramic heater, which adopts the following technical solution:

[0007] An irregularly shaped ceramic heater, comprising:

[0008] The ceramic ring has a through slot, and the through slot is parallel to the axial direction of the ceramic ring.

[0009] The heating wire is inserted into a slot, which is an open loop, and the size of the open loop is smaller than the diameter of the heating wire.

[0010] By adopting the above technical solution, the heating wire is inserted into the slot along the axial direction of the ceramic ring. Since the size of the open ring is smaller than the diameter of the heating wire, the slot wall limits the heating wire, making the heating wire stable in the slot and reducing the possibility of the heating wires coming into contact with each other during vibration. This effectively reduces the possibility of short circuit caused by the non-insulation of the heating wire surface. At the same time, the heating wire is firmly installed in the slot, improving the installation stability and reliability of the heating wire.

[0011] Optionally, the ceramic ring can be unfolded into a flat shape.

[0012] By adopting the above technical solution, when a fault occurs and the heating wire needs to be replaced, the ceramic ring can be unfolded and the heating wire removed, which facilitates replacement and repair, simplifies maintenance operations, and improves maintenance efficiency.

[0013] Optionally, the ceramic ring has a raised portion on the inner side.

[0014] By adopting the above technical solution, when the irregularly shaped ceramic heater is installed on the equipment, the protrusion on the inner side of the ceramic ring can play a supporting role, which facilitates the support and positioning of the ceramic ring, so that a certain gap is formed between the heating wire and the heating ring. When the heating wire is energized and generates heat, the heat can be fully filled, flow and diffused in the gap, reducing the possibility of heat concentration in a local area, so that the heat can be transferred to the heating ring more evenly, effectively improving the heating uniformity of the heating ring.

[0015] Optionally, the ceramic ring includes a first ceramic block and a second ceramic block. The first ceramic block is arranged in a ring, and the second ceramic block is arranged in a ring. The first ceramic block and the second ceramic block are staggered along the axial direction of the ceramic ring. The slot includes a first slot and a second slot. The first slot is formed on the first ceramic block, and the second slot is formed on the second ceramic block. The heating wire is inserted into the first slot and the second slot.

[0016] By adopting the above technical solution, the ceramic ring is configured to include a first ceramic block and a second ceramic block arranged in a ring and staggered along the axial direction. The slot is divided into a first slot in the first ceramic block and a second slot in the second ceramic block. When installing the heating wire, the heating wire can be inserted into the first slot and the second slot. Compared with the complicated heating wire installation method in the prior art, this staggered distribution and slot setting method simplifies the installation process of the heating wire and improves production efficiency. At the same time, the staggered distribution of ceramic blocks and the way the heating wire is inserted into the corresponding slot make the distribution of the heating wire in the ceramic ring more orderly and stable, reducing the short circuit caused by the heating wire contacting each other during vibration, and improving the installation stability and reliability of the heating wire.

[0017] Optionally, the first ceramic block and the second ceramic block are offset by half along the circumferential direction of the ceramic ring.

[0018] By adopting the above technical solution, the first ceramic block and the second ceramic block are offset by half along the circumferential direction of the ceramic ring, so that the first slot on the first ceramic block and the second slot on the second ceramic block are alternately positioned. The heating wire can be smoothly inserted into the first slot and the second slot in sequence. At the same time, when the ceramic ring is placed on the heating ring, the first ceramic block and the second ceramic block are offset to form a mutually supporting structure, reducing the possibility of the ceramic ring structure dispersing.

[0019] Optionally, one end of the ceramic ring in the axial direction is provided with a first end ceramic block, the first end ceramic block is connected to a limiting ceramic block, the heating wire is attached to the limiting ceramic block, and the end of the ceramic ring in the axial direction away from the first end ceramic block is provided with a second end ceramic block, the second end ceramic block is provided with a limiting groove, the end of the heating wire away from the limiting ceramic block is inserted into the limiting groove, and the groove wall of the limiting groove is attached to the heating wire.

[0020] By adopting the above technical solution, a first end ceramic block is set at one end of the ceramic ring in the axial direction and connected to a limiting ceramic block, and a limiting groove is opened on the second end ceramic block, so that the end of the heating wire is attached to the limiting ceramic block and the end away from the limiting ceramic block is inserted into the limiting groove and fits against the groove wall. This can further enhance the stability and reliability of the heating wire installation, reduce the possibility of displacement and shaking of the heating wire during use, and thus reduce the possibility of poor contact or short circuit problems caused by changes in the position of the heating wire. At the same time, it also helps to improve the overall structural stability of the irregular ceramic heater.

[0021] Optionally, the heating wire is attached to the side of the limiting ceramic block away from the second end ceramic block.

[0022] By adopting the above technical solution, the heating wire is further stabilized and limited, reducing the possibility of the heating wire shaking or shifting during operation, and improving the installation stability and reliability of the heating wire.

[0023] Optionally, the heating wire is connected to a terminal block.

[0024] By adopting the above technical solution, the connection terminal block of the heating wire makes the connection between the heating wire and the external power supply more convenient and stable, facilitates the input and control of current, and ensures that the heating wire can generate heat normally, realize the heating operation of the workpiece, and effectively improve the reliability and convenience of the connection between the heater and the power supply.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The heating wire is inserted into the slot along the axial direction of the ceramic ring. Since the size of the open ring is smaller than the diameter of the heating wire, the slot wall limits the heating wire, making the heating wire stable in the slot. This reduces the possibility of the heating wires coming into contact with each other during vibration, thereby effectively reducing the possibility of short circuits caused by the non-insulation of the heating wire surface. At the same time, the heating wire is firmly installed in the slot, improving the installation stability and reliability of the heating wire.

[0027] 2. When a fault occurs and the heating wire needs to be replaced, the ceramic ring can be unfolded and the heating wire removed, which facilitates replacement and repair, simplifies maintenance operations, and improves maintenance efficiency;

[0028] 3. When the irregularly shaped ceramic heater is installed on the equipment, the protrusion on the inner side of the ceramic ring can provide support, making it easy to support and position the ceramic ring. This creates a certain gap between the heating wire and the heating ring. When the heating wire is energized and generates heat, the heat can fully fill, flow and diffuse within this gap, reducing the possibility of heat concentration in a local area. This allows the heat to be transferred to the heating ring more evenly, effectively improving the uniformity of heating. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 This is a schematic diagram of the structure of the first ceramic block in the embodiments of this application.

[0032] Figure 4 This is a schematic diagram of the structure of the second ceramic block in the embodiments of this application.

[0033] Figure 5 This is a schematic diagram of the structure of the second end ceramic block in an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Heating wire; 2. First ceramic block; 21. First slot; 3. Second ceramic block; 31. Second slot; 32. Protrusion; 4. First end ceramic block; 41. Limiting ceramic block; 5. Second end ceramic block; 51. Limiting groove; 6. Terminal block. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses an irregularly shaped ceramic heater.

[0038] Reference Figure 1 and Figure 2 A non-circular ceramic heater includes a ceramic ring and a heating wire 1. The ceramic ring is fixed between the heating ring and the insulation ring, and is attached to the insulation layer. The side of the ceramic ring away from the insulation groove is attached to the heating ring. The ceramic ring is placed in the mounting groove of the outer shell ring, and one end of the ceramic ring abuts against the groove wall. The ceramic ring has a through slot, and the opening direction of the through slot is parallel to the axial direction of the ceramic ring. The heating wire 1 is distributed in a snake shape on the ceramic ring. The heating wire 1 is inserted into the through slot of the ceramic ring. The through slot is open-loop shaped and the size of the open loop is smaller than the diameter of the heating wire 1. When the heating wire 1 is fixedly installed on the ceramic ring, the heating wire 1 is inserted into the through slot, and the groove wall of the through slot blocks the heating wire 1, so that the heating wire 1 is firmly fixed in the through slot, reducing the possibility of short circuit caused by the heating wire 1 contacting each other during vibration, and improving the stability and reliability of the heating wire 1.

[0039] The heating wire 1 is made of alloy heating wire 1, which has good heating performance. When the heating wire 1 is energized, the heat generated is transferred to the heating coil through the ceramic ring. The heating wire 1 can be straight, which makes it easy to insert into the slot.

[0040] The ceramic ring can be unfolded into a flat shape, which facilitates the disassembly and assembly of the heating wire 1. When the ceramic ring needs to be installed on the heating coil, the unfolded flat ceramic ring is arranged in a ring and placed on the heating coil.

[0041] Reference Figure 2 The ceramic ring includes a first ceramic block 2 and a second ceramic block 3. The first ceramic block 2 is arranged in a ring, and the second ceramic block 3 is also arranged in a ring. The first ceramic block 2 and the second ceramic block 3 are staggered along the axial direction of the ceramic ring. Both the first ceramic block 2 and the second ceramic block 3 are made of ceramic material. Figure 3 The first ceramic block 2 is in the shape of an "E" with its two sides folded inward after rotating 90 degrees counterclockwise. The slot includes a first slot 21 and a second slot 31. The first slot 21 is opened at the "E"-shaped opening of the first ceramic block 2. (Refer to...) Figure 4 The second ceramic block 3 is shaped like a mountain with its sides folded inward. The second slot 31 is opened at the opening of the mountain-shaped part of the second ceramic block 3. The heating wire 1 is inserted into the first slot 21 and the second slot 31. The first ceramic block 2 and the second ceramic block 3 are arranged alternately along the extension direction of the heating wire 1. The first ceramic block 2 and the second ceramic block 3 are hinged through the heating wire 1 to form a whole ceramic ring plate.

[0042] Furthermore, refer to Figure 2The first ceramic block 2 and the second ceramic block 3 are distributed in a half-off offset along the circumferential direction of the ceramic ring. Specifically, the first slot 21 is symmetrically arranged on the first ceramic block 2, and the second slot 31 is symmetrically arranged on the second ceramic block 3. The two first slots 21 of the first ceramic block 2 are respectively connected to the two second slots 31 of the second ceramic block 3, and the two second slots 31 of the second ceramic block 3 are respectively connected to the two first slots 21 of the first ceramic block 2. The distribution of the heating wire 1 is optimized, reducing the possibility of uneven heating caused by excessive concentration of the heating wire 1 in a local area. This makes the heating wire 1 form a more reasonable layout in the ceramic ring, and the heat can be transferred to the workpiece to be heated more evenly.

[0043] One end of the ceramic ring in the axial direction is provided with a first end ceramic block 4. The first end ceramic block 4 is in the shape of an inwardly folded chamfer at the opening. The first end ceramic block 4 is fixedly connected to a limiting ceramic block 41. The limiting ceramic block 41 is located in the middle of the chamfer shape of the first end ceramic block 4. The heating wire 1 is inserted into the gap between the first end ceramic block 4 and the limiting ceramic block 41. The heating wire 1 is bent and is attached to both sides of the limiting ceramic block 41, so that the heating wire 1 is clamped between the first end ceramic block 4 and the limiting ceramic block 41. Furthermore, the first end ceramic block 4 and the limiting ceramic block 41 are integrally formed and made of ceramic material.

[0044] Reference Figure 2 and Figure 5 A second end ceramic block 5 is provided at the end of the ceramic ring away from the first end ceramic block 4 in the axial direction. The first end ceramic block 4 is in the shape of a "mountain" with two sides folded inward. The heating wire 1 is inserted into the "mountain" shape of the first end ceramic block 4. A limiting groove 51 is opened in the middle of the "mountain" shape of the second end ceramic block 5, so that the two sides of the "mountain" shape of the second end ceramic block 5 are connected. The end of the heating wire 1 away from the limiting ceramic block 41 is inserted into the limiting groove 51, so that the heating wire 1 is engaged by the "mountain" shape of the second end ceramic block 5. The groove wall of the limiting groove 51 is in contact with the heating wire 1, thereby realizing the installation of the heating wire 1 and reducing the possibility of displacement of the heating wire 1 during use.

[0045] Furthermore, the heating wire 1 is attached to the side of the limiting ceramic block 41 away from the second end ceramic block 5. The limiting ceramic block 41 is used to limit the heating wire 1, which facilitates the installation and connection of the heating wire 1.

[0046] The inner side of the ceramic ring is provided with a protrusion 32. Specifically, the protrusion 32 is the central protrusion of the second ceramic block 3 in the shape of a "mountain" with two sides folded inward. When the ceramic ring is placed on the heating ring, the protrusion 32 is tightly pressed against the outer side of the heating ring, so that a heating cavity is formed between the heating wire 1 and the heating ring. When the heating wire 1 is energized and generates heat, the heat can be fully filled, flow and diffused in the heating cavity, reducing the possibility of heat concentration in a local area, so that the heat can be transferred to the heating ring more evenly, effectively improving the heating uniformity of the heating ring.

[0047] The heating wire 1 is fixedly connected to a terminal block 6. There are two terminal blocks 6, which are located at both ends of the heating wire 1 respectively. The terminal blocks 6 are used to connect to the power supply to provide power to the heating wire 1. The terminal blocks 6 are connected to the heating wire 1 by welding to ensure a good electrical connection.

[0048] The implementation principle of an irregularly shaped ceramic heater according to an embodiment of this application is as follows: the first ceramic block 2 and the second ceramic block 3 are staggered, such that the two first slots 21 of the first ceramic block 2 are respectively connected to the second slots 31 of the two second ceramic blocks 3, and the two second slots 31 of the second ceramic blocks 3 are respectively connected to the first slots 21 of the two first ceramic blocks 2. The heating wire 1 is inserted into the first slots 21 and the second slots 31. The first ceramic blocks 2 and the second ceramic blocks 3 are spaced apart. The bending point of the heating wire 1 is limited by the limiting ceramic block 41 and the limiting groove 51, so that the heating wire 1 is firmly fixed to the ceramic ring, reducing the possibility of short circuit caused by mutual contact of the heating wire 1 during vibration, and improving the stability and reliability of the heating wire 1.

[0049] The above are all preferred embodiments of this application. These embodiments are only explanations 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 profiled ceramic heater, characterised in that, include: The ceramic ring has a through slot, and the through slot is parallel to the axial direction of the ceramic ring. The heating wire (1) is inserted into the slot, which is an open loop, and the size of the open loop is smaller than the diameter of the heating wire (1).

2. A profiled ceramic heater as claimed in claim 1, wherein, The ceramic ring can be unfolded into a flat shape.

3. A profiled ceramic heater as claimed in claim 1, wherein, The inner side of the ceramic ring has a protrusion (32).

4. The profiled ceramic heater of claim 1, wherein, The ceramic ring includes a first ceramic block (2) and a second ceramic block (3). The first ceramic block (2) is arranged in a ring, and the second ceramic block (3) is arranged in a ring. The first ceramic block (2) and the second ceramic block (3) are staggered along the axial direction of the ceramic ring. The slot includes a first slot (21) and a second slot (31). The first slot (21) is opened on the first ceramic block (2), and the second slot (31) is opened on the second ceramic block (3). The heating wire (1) is inserted into the first slot (21) and the second slot (31).

5. A profiled ceramic heater as claimed in claim 4, wherein, The first ceramic block (2) and the second ceramic block (3) are offset by half along the circumferential direction of the ceramic ring.

6. A profiled ceramic heater as claimed in claim 1, wherein, A first end ceramic block (4) is provided at one end of the ceramic ring in the axial direction. The first end ceramic block (4) is connected to a limiting ceramic block (41). The heating wire (1) is attached to the limiting ceramic block (41). A second end ceramic block (5) is provided at one end of the ceramic ring in the axial direction away from the first end ceramic block (4). A limiting groove (51) is provided on the second end ceramic block (5). The end of the heating wire (1) away from the limiting ceramic block (41) is inserted into the limiting groove (51). The groove wall of the limiting groove (51) is attached to the heating wire (1).

7. A shaped ceramic heater according to claim 6, characterized in that, The heating wire (1) is attached to the side of the limiting ceramic block (41) away from the second end ceramic block (5).

8. The profiled ceramic heater of claim 1, wherein, The heating wire (1) is connected to a terminal block (6).

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