An electric heater

Abstract

This application discloses an electric heater, relating to the field of electric heaters, including a housing and multiple heating elements. The housing is provided with a connecting assembly for quick assembly and disassembly of the heating elements. The connecting assembly includes a first annular plate fixedly connected to the top of the housing. This application utilizes the cooperative arrangement of the first annular plate, a second annular plate, and a pushing block. In use, a spring is compressed, and a plug-in rod is brought closer to the first annular plate. Then, the heating element is inserted into the housing through the mounting hole, positioning the connecting block at the top of the housing. By releasing the pushing block, the spring rebounds, pushing the pushing block towards the second annular plate, allowing the plug-in rod to be inserted into the plug-in hole, thus fixing the heating element. When a heating element is damaged, simply pull the corresponding pushing block to remove the plug-in rod and retrieve the damaged heating element. This minimizes the inconvenience of disassembling and replacing damaged heating elements during use, which reduces work efficiency.

Description

Technical Field

[0001] This application relates to the field of electric heaters, and more particularly to an electric heater. Background Technology

[0002] Electric heaters are a popular type of electric heating equipment used to heat, maintain, and maintain the temperature of flowing liquid and gaseous media. When the heating medium passes through the heating chamber of the electric heater under pressure, the enormous heat generated by the electric heating element is uniformly carried away using the principle of fluid thermodynamics, so that the temperature of the heated medium reaches the user's process requirements. The period from 1910 to 1925 was a period of great development in the history of electric heating appliances. In both household and industrial applications, the emergence and widespread use of various types of electric heating appliances developed rapidly, especially in the household sector. The invention of the nickel-chromium alloy heating element laid the foundation for the development of the electric heating appliance industry.

[0003] In industrial applications, existing electric heaters typically have heating elements installed inside a heating chamber. Gas pipes are then connected to both ends of the heating chamber, allowing the gas to enter and be heated through the heating elements. However, when the heating elements are damaged during use, it is inconvenient to disassemble and replace them, leading to reduced work efficiency. Utility Model Content

[0004] To address the aforementioned problems, this application provides an electric heater.

[0005] The electric heater provided in this application adopts the following technical solution:

[0006] An electric heater includes a housing and multiple heating elements. The housing is provided with a connecting assembly for quick assembly and disassembly of the heating elements. The connecting assembly includes a first annular plate fixedly connected to the top of the housing. A second annular plate is fixedly connected to the top of the housing within the first annular plate. A plurality of annularly arranged springs are fixedly connected to the side wall of the first annular plate near the second annular plate. A pushing block is fixedly connected to the end of each spring away from the first annular plate. A plug-in rod is fixedly connected to the side wall of the pushing block away from the spring. A plurality of annularly arranged mounting holes are opened in the top of the housing within the second annular plate. The heating elements pass through the mounting holes and are located within the housing. A connecting block is fixedly connected to the top of each heating element. A plug-in hole is opened on one side wall of each connecting block. One end of the plug-in rod passes through the second annular plate and is plugged into the plug-in hole.

[0007] By adopting the above technical solution, during use, the spring is compressed by moving the push block, bringing the plug-in rod closer to the first annular plate. Then, the heating element is inserted into the box through the mounting hole, so that the connecting block is located at the top of the box. By releasing the push block, the spring rebounds, pushing the push block towards the second annular plate, allowing the plug-in rod to be inserted into the plug-in hole respectively, thus fixing the heating element. When the heating element is damaged, simply pull the corresponding push block to pull out the plug-in rod, and the damaged heating element can be removed. This minimizes the problem of inconvenience in disassembling and replacing the heating element when it is damaged during use, which would reduce work efficiency.

[0008] Preferably, a support ring is fixedly connected to the bottom of the box, and a plurality of annular array connection holes are opened on the upper surface of the support ring, and the bottom end of the heating tube is respectively inserted into the connection holes.

[0009] By adopting the above technical solution, after inserting the heating element into the box, the heating element is inserted into the connection hole, which can improve the stability of the heating element and prevent the heating element from shaking when air passes through the box.

[0010] Preferably, each of the connecting blocks has an annular sealing ring fixedly connected to its bottom end, the heating element is located inside the annular sealing ring, and the bottom end of the annular sealing ring abuts against the housing.

[0011] By adopting the above technical solution, when inserting the heating element into the box, the annular sealing ring is made to fit against the top of the box. Then, the connecting block is pressed to align the insertion hole with the insertion rod, while squeezing the annular sealing ring to press it against the box. This can prevent gas inside the box from leaking through the gap between the mounting hole and the heating element.

[0012] Preferably, each spring is provided with a pull rod, one end of which is fixedly connected to the push block, and the other end of which passes through the first annular plate.

[0013] By adopting the above technical solution, the push block can be easily moved by pulling the lever, while preventing the spring from bending and causing damage when it contracts.

[0014] Preferably, a plurality of guide rods in an annular array are fixedly connected between the first annular plate and the second annular plate, and the push blocks are respectively sleeved on the guide rods.

[0015] By adopting the above technical solution, the stability of the push block's movement can be improved by using the guide rod, preventing the push block from shaking.

[0016] Preferably, the top of each of the second annular plates is hinged with a plurality of U-shaped clamping plates arranged in an annular array, and the U-shaped clamping plates are sleeved on the push block.

[0017] By adopting the above technical solution, after inserting the plug rod into the plug hole, the U-shaped clamp is swung and placed on the push block to reinforce the push block and prevent the vibration generated when the air passes through the box from causing the push block to move and causing the plug rod to disengage from the plug hole.

[0018] Preferably, a viewing window is fixedly connected to the side wall of the enclosure, and a temperature controller is installed on one side of the viewing window on the side wall of the enclosure, and the temperature controller is electrically connected to the heating element.

[0019] By adopting the above technical solution, the heating element inside the chamber can be easily observed through the viewing window to see if there are any problems such as deformation or damage. At the same time, the heating element is controlled by the temperature controller to keep the temperature inside the chamber constant.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application utilizes the cooperative arrangement of structures such as the first annular plate, the second annular plate, and the push block. During use, by moving the push block, the spring is compressed, causing the plug-in rod to move closer to the first annular plate. Then, the heating element is inserted into the housing through the mounting hole, positioning the connecting block at the top of the housing. By releasing the push block, the spring rebounds, pushing the push block towards the second annular plate, allowing the plug-in rod to be inserted into the plug-in hole to fix the heating element. When the heating element is damaged, simply pull the corresponding push block to remove the plug-in rod and take out the damaged heating element. This minimizes the inconvenience of disassembling and replacing the heating element when it is damaged during use, thus avoiding the problem of reduced work efficiency caused by the difficulty in disassembling and replacing the heating element.

[0022] 2. After inserting the plug rod into the plug hole, swing the U-shaped clamp plate to fit the U-shaped clamp plate onto the push block. This can reinforce the push block and prevent the vibration generated when air passes through the box from causing the push block to move and causing the plug rod to disengage from the plug hole. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an electric heater according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the internal structure of the box, which is a key feature of this application.

[0025] Figure 3 The embodiments of this application mainly embody Figure 2 A schematic diagram of the enlarged structure of region A in the middle;

[0026] Figure 4 The embodiments of this application mainly embody Figure 2 A schematic diagram of the enlarged structure of region B in the middle;

[0027] Figure 5 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region C in the middle.

[0028] Reference numerals: 1. Housing; 2. Heating element; 3. First annular plate; 4. Second annular plate; 5. Spring; 6. Push block; 7. Insert rod; 8. Mounting hole; 9. Connecting block; 10. Insert hole; 11. Support ring; 12. Connecting hole; 13. Annular sealing ring; 14. Pull rod; 15. Guide rod; 16. U-shaped clamping plate; 17. Viewing window; 18. Temperature controller. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses an electric heater.

[0031] Reference Figure 1 , Figure 2 and Figure 3 An electric heater includes a housing 1 and a plurality of heating tubes 2. The housing 1 is provided with a connecting assembly for quick assembly and disassembly of the heating tubes 2. The connecting assembly includes a first annular plate 3, a second annular plate 4, a spring 5, a push block 6, a plug rod 7, a mounting hole 8, a connecting block 9, and a plug hole 10.

[0032] The first annular plate 3 is fixedly connected to the top of the housing 1. The second annular plate 4 is fixedly connected to the top of the housing 1 and located inside the first annular plate 3. Multiple springs 5 ​​are provided and fixedly connected to the side wall of the first annular plate 3 near the second annular plate 4, forming a ring array. Multiple push blocks 6 are provided and fixedly connected to the end of the spring 5 away from the first annular plate 3. Multiple insertion rods 7 are provided and fixedly connected to the side wall of the push block 6 away from the spring 5. Multiple mounting holes 8 are provided and opened at the top of the housing 1 and located inside the second annular plate 4. The mounting holes 8 are arranged in a ring array for inserting the heating tube 2 into the housing 1. Multiple connecting blocks 9 are provided and fixedly connected to the top of the heating tube 2. Multiple insertion holes 10 are provided and opened on the side wall of the connecting block 9. The end of the insertion rod 7 away from the push block 6 passes through the second annular plate 4 and is inserted into the insertion hole 10.

[0033] Reference Figure 2 and Figure 3A support ring 11 is fixedly connected to the bottom of the box 1. The upper surface of the support ring 11 has multiple annular array connection holes 12. The bottom ends of the heating tubes 2 are respectively inserted into the connection holes 12. After the heating tubes 2 are inserted into the box 1, the heating tubes 2 are respectively inserted into the connection holes 12, which can improve the stability of the heating tubes 2 and prevent the heating tubes 2 from shaking when the air passes through the box 1.

[0034] Reference Figure 1 and Figure 3 Each connecting block 9 has a fixed annular sealing ring 13 at its bottom. The heating tube 2 is located inside the annular sealing ring 13. The bottom of the annular sealing ring 13 abuts against the box body 1. When the heating tube 2 is inserted into the box body 1, the annular sealing ring 13 is made to fit against the top of the box body 1. Then, the connecting block 9 is pressed to align the insertion hole 10 with the insertion rod 7 while squeezing the annular sealing ring 13 to abut against the box body 1. This can prevent gas inside the box body 1 from leaking through the gap between the mounting hole 8 and the heating tube 2.

[0035] Reference Figure 3 Each spring 5 is equipped with a pull rod 14. One end of the pull rod 14 is fixedly connected to the push block 6, and the other end of the pull rod 14 passes through the first annular plate 3. The pull rod 14 facilitates the movement of the push block 6 and prevents the spring 5 from bending and being damaged when it contracts.

[0036] Reference Figure 3 Multiple ring-shaped guide rods 15 are fixedly connected between the first annular plate 3 and the second annular plate 4. The push blocks 6 are respectively sleeved on the guide rods 15. The guide rods 15 can improve the stability of the movement of the push blocks 6 and prevent the push blocks 6 from shaking.

[0037] Reference Figure 5 The top of the second annular plate 4 is hinged with multiple U-shaped clamping plates 16 in an annular array. The U-shaped clamping plates 16 are sleeved on the push block 6. After the insertion rod 7 is inserted into the insertion hole 10, the U-shaped clamping plates 16 are swung to sleeve the push block 6, which can reinforce the push block 6 and prevent the vibration generated when the air passes through the box 1 from causing the push block 6 to move and causing the insertion rod 7 to disengage from the insertion hole 10.

[0038] Reference Figure 1 A viewing window 17 is fixedly connected to the side wall of the box body 1. A temperature controller 18 is installed on the side wall of the box body 1 on one side of the viewing window 17. The temperature controller 18 is electrically connected to the heating tube 2. The viewing window 17 allows for easy observation of whether the heating tube 2 inside the box body 1 has been deformed or damaged. At the same time, the temperature controller 18 controls the heating tube 2 to keep the temperature inside the box body 1 constant.

[0039] The implementation principle of an electric heater according to an embodiment of this application is as follows: In use, the push block 6 is moved by the pull rod 14, which compresses the spring 5 and moves the plug-in rod 7 closer to the first annular plate 3. Then, the heating element 2 is inserted into the housing 1 through the mounting hole 8, so that the connecting block 9 is located at the top of the housing 1. Then, the connecting block 9 is pressed, so that the plug-in hole 10 is aligned with the plug-in rod 7, and the annular sealing ring 13 is squeezed, so that the annular sealing ring 13 abuts against the housing 1. Then, by releasing the pull rod 14, the spring 5 rebounds, pushing the push block 6 towards the second annular plate 4, so that the plug-in rod 7 is inserted into the plug-in hole 10. The heating element 2 is fixed inside the hole 10. Then, by swinging the U-shaped clamp 16, the U-shaped clamp 16 is placed on the push block 6, which can reinforce the push block 6 and prevent the vibration generated when the air passes through the box 1 from causing the push block 6 to move. When the heating element 2 is damaged, simply swing the U-shaped clamp 16 and pull the corresponding push block 6 to pull out the plug rod 7, and the damaged heating element 2 can be removed. This avoids the problem of inconvenience in disassembling and replacing the heating element 2 when it is damaged during use, which would reduce work efficiency.

[0040] 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. An electric heater, comprising a housing (1) and a plurality of heating elements (2), wherein the housing (1) is provided with a connecting assembly for quick assembly and disassembly of the heating elements (2), characterized in that: The connecting assembly includes a first annular plate (3) fixedly connected to the top of the housing (1), a second annular plate (4) fixedly connected to the top of the housing (1) inside the first annular plate (3), a plurality of annular array springs (5) fixedly connected to the side wall of the first annular plate (3) near the second annular plate (4), a push block (6) fixedly connected to the end of the spring (5) away from the first annular plate (3), a plug-in rod (7) fixedly connected to the side wall of the push block (6) away from the spring (5), a plurality of annular array mounting holes (8) are opened in the top of the housing (1) inside the second annular plate (4), the heating tubes (2) pass through the mounting holes (8) and are located inside the housing (1), a connecting block (9) is fixedly connected to the top of the heating tubes (2), a plug-in hole (10) is opened on one side wall of the connecting block (9), and one end of the plug-in rod (7) passes through the second annular plate (4) and is plugged into the plug-in hole (10).

2. An electric heater according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a support ring (11). The upper surface of the support ring (11) is provided with a plurality of annular array connection holes (12). The bottom of the heating tube (2) is inserted into the connection holes (12) respectively.

3. An electric heater according to claim 2, characterized in that: The bottom of each connecting block (9) is fixedly connected with an annular sealing ring (13), the heating tube (2) is located inside the annular sealing ring (13), and the bottom of the annular sealing ring (13) abuts against the box body (1).

4. An electric heater according to claim 3, characterized in that: Each spring (5) is provided with a pull rod (14), one end of which is fixedly connected to the push block (6), and the other end of which passes through the first annular plate (3).

5. An electric heater according to claim 4, characterized in that: A plurality of annular array guide rods (15) are fixedly connected between the first annular plate (3) and the second annular plate (4), and the push blocks (6) are respectively sleeved on the guide rods (15).

6. An electric heater according to claim 5, characterized in that: The top of the second annular plate (4) is hinged with a plurality of U-shaped card plates (16) in an annular array, and the U-shaped card plates (16) are sleeved on the push block (6).

7. An electric heater according to claim 6, characterized in that: A viewing window (17) is fixedly connected to the side wall of the box (1). A temperature controller (18) is installed on the side wall of the box (1) on one side of the viewing window (17). The temperature controller (18) is electrically connected to the heating tube (2).

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