A low-power semiconductor heater

Abstract

The utility model discloses a kind of low-power semiconductor heaters, including shell, the top surface of shell is threadedly connected sealing cover, heating pipe is fixedly sleeved in shell, the outside of heating pipe is wrapped with heat preservation layer, the outside of heating pipe is equipped with multiple installation grooves, one PTC semiconductor heat piece is respectively equipped in each installation groove, the top wall of installation groove is equipped with threading hole, wire is threaded in threading hole, wire is fixedly connected with PTC semiconductor heat piece, the inner wall of the upper end of heating pipe is equipped with internal thread, the inner wall of heating pipe is threadedly connected support frame, filter element is equipped in support frame, the top surface of support frame is fixedly connected with swivel, the bottom surface of support frame is abutted with limit ring, and limit ring is fixedly connected in heating pipe. The utility model is convenient to filter scale in hot water through heating pipe, convenient to take out filter element from heating pipe, clean scale accumulated on filter element, prevent too much scale accumulated in heating pipe, affect heating efficiency of heating pipe to water.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a low-power semiconductor heater. Background Technology

[0002] A semiconductor heater is a device that uses an electric heating element made of semiconductor material to perform heating work. Its working principle is based on the thermal effect that occurs when an electric current passes through the semiconductor material. The temperature is controlled by using the current-temperature characteristics, and the generated heat energy is conducted to the area that needs to be heated.

[0003] Patent publication number CN222688423U discloses a semiconductor heater, relating to the field of heater equipment technology, including a heater body and a protective shell; the heater body includes a heating tube and several PTC semiconductor heating elements; the heating tube is a hollow cylindrical shape, with a liquid inlet channel formed in the middle of the heating tube, and water inlet and outlet pipes respectively provided at both ends of the heating tube; several mounting grooves are provided along the length direction on the outer wall of the heating tube, and several PTC semiconductor heating elements are respectively disposed in several mounting grooves; the protective shell includes an outer shell with one end open and a shell cover disposed on the outer shell, the heater body is vertically disposed inside the outer shell, and one end of the water inlet and outlet pipes respectively penetrates the shell cover and the outer shell; this increases the liquid flow rate, improves the heat conversion efficiency, and prevents the heat on the heating tube from dissipating quickly, thereby improving the water heating efficiency inside the heating tube.

[0004] However, when the heating element heats the water inside for a long time, a layer of scale will form inside the heating element. Over time, the scale inside the heating element will become thicker and thicker, which will reduce the thermal conductivity of the heating element. At the same time, it will reduce the internal space of the heating element, which will reduce the flow of water. Since the inner wall of the heating element has a small diameter, it is impossible to clean the scale inside the heating element. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-power semiconductor heater.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-power semiconductor heater, comprising a housing, a sealing cap threadedly connected to the top surface of the housing, a heating tube fixedly sleeved inside the housing, an insulation layer wrapped around the outside of the heating tube, multiple mounting slots on the outside of the heating tube, a PTC semiconductor heating element disposed in each mounting slot, a wire hole provided on the top wall of the mounting slot, a wire passing through the wire hole and fixedly connected to the PTC semiconductor heating element, an internal thread on the upper inner wall of the heating tube, a support frame threadedly connected to the inner wall of the heating tube, a filter element disposed inside the support frame, a rotating ring fixedly connected to the top surface of the support frame, and a limiting ring abutting the bottom surface of the support frame, the limiting ring being fixedly connected inside the heating tube.

[0007] As a further description of the above technical solution: the support frame includes an externally threaded tube fixedly connected to the bottom surface of the rotating ring, the externally threaded tube being threadedly connected inside the heating tube, two arc-shaped uprights being symmetrically slidably connected to the bottom surface of the externally threaded tube, and a support ring being fixedly connected to the ends of the two arc-shaped uprights. The support ring abuts against the top surface of the limiting ring, and the filter element is snapped between the support ring and the externally threaded tube.

[0008] As a further description of the above technical solution: the filter element includes two first filter plates symmetrically snapped between the external threaded pipe and the support ring, and a second filter plate is snapped inside the support ring, the second filter plate being snapped with the first filter plate.

[0009] As a further description of the above technical solution: the inner side of the support ring is symmetrically provided with two second slots, and a second block is respectively engaged in the two second slots. The two second blocks are symmetrically fixed to the outside of the second filter plate. The outer side of the support ring is symmetrically provided with two first slots, and a first block is respectively engaged in the two first slots. A first filter plate is respectively fixedly connected to the top surface of the two first blocks. A positioning hole communicating with the second slot passes through the first slot. A positioning pin slides through the positioning hole. The positioning pin is fixedly connected to the first filter plate. A positioning groove is provided on the outer side of the second block. The positioning pin is inserted into the positioning groove.

[0010] As a further description of the above technical solution: the top surface of the arc-shaped upright is provided with a vertical storage groove, and a guide rod is slidably connected in the storage groove. The guide rod is fixedly connected to the bottom wall of the external threaded tube.

[0011] As a further description of the above technical solution: the inner wall of the storage groove is symmetrically provided with two sliding grooves, and sliders are slidably connected in the two sliding grooves respectively. The two sliders are symmetrically fixed to the outer edge of the guide rod, and springs are fixedly connected between the inside of the sliding groove and the sliders.

[0012] As a further description of the above technical solution: multiple first blind holes are provided on both sides of the arc-shaped upright, and a first positioning post is inserted into each blind hole. The first positioning post is fixedly connected to the end face of the first filter plate. Multiple second blind holes are vertically provided on the top surface of the first filter plate, and a second positioning post is inserted into each blind hole. The second positioning post is vertically fixed to the bottom surface of the external threaded tube.

[0013] This utility model has the following beneficial effects:

[0014] Compared with existing technologies, this low-power semiconductor heater uses a support frame threaded inside the heating tube, and a filter element is snapped into the support frame. This facilitates the filtration of scale in the hot water passing through the heating tube, and also makes it easy to remove the filter element from the heating tube to clean the scale accumulated on it. This prevents excessive scale buildup inside the heating tube from affecting its heating efficiency and thus reduces the energy consumption of the heating tube. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the overall structure of a low-power semiconductor heater proposed in this utility model;

[0016] Figure 2 This is a main sectional view of the overall structure of a low-power semiconductor heater proposed in this utility model;

[0017] Figure 3 This invention proposes a low-power semiconductor heater. Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4 This is a diagram showing the external structure of the water pipe of a low-power semiconductor heater proposed in this utility model.

[0019] Figure 5 This is an overall structural diagram of the filter element of a low-power semiconductor heater proposed in this utility model;

[0020] Figure 6 This is an overall structural diagram of the first filter plate of a low-power semiconductor heater proposed in this utility model;

[0021] Figure 7 This is an overall structural diagram of the second filter plate of a low-power semiconductor heater proposed in this utility model;

[0022] Figure 8 This is an overall structural diagram of the support frame for a low-power semiconductor heater proposed in this utility model;

[0023] Figure 9This invention proposes a low-power semiconductor heater. Figure 8 Enlarged view of the structure at point B in the middle;

[0024] Figure 10 This is a cross-sectional view of the connection between the external threaded tube and the arc-shaped upright of a low-power semiconductor heater proposed in this utility model.

[0025] Legend:

[0026] 1. Housing; 2. Sealing cap; 3. Wire; 4. Rotary ring; 5. External threaded tube; 6. Heating tube; 7. Internal thread; 8. Insulation layer; 9. First filter plate; 10. Second filter plate; 11. Limiting ring; 12. Arc-shaped upright; 13. First slot; 14. First locking block; 15. Positioning pin; 16. Positioning hole; 17. Second slot; 18. Second locking block; 19. Positioning groove; 20. Support ring; 21. Mounting groove; 22. PTC semiconductor heating element; 23. First positioning post; 24. Second blind hole; 25. First blind hole; 26. Guide rod; 27. Slide groove; 28. Spring; 29. ​​Slider; 30. Storage groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1 to 10 This utility model provides a low-power semiconductor heater, comprising a housing 1, a sealing cap 2 threadedly connected to the top surface of the housing 1, a heating tube 6 fixedly sleeved inside the housing 1, an insulation layer 8 wrapped around the outside of the heating tube 6, multiple mounting slots 21 on the outside of the heating tube 6, a PTC semiconductor heating element 22 in each mounting slot 21, a wire hole on the top wall of the mounting slot 21, a wire 3 passing through the wire hole, the wire 3 being fixedly connected to the PTC semiconductor heating element 22, an internal thread 7 on the upper inner wall of the heating tube 6, a support frame threadedly connected to the inner wall of the heating tube 6, a filter element inside the support frame, a rotating ring 4 fixedly connected to the top surface of the support frame, a limiting ring 11 abutting the bottom surface of the support frame, the limiting ring 11 being fixedly connected inside the heating tube 6, the heating tube 6 being made of aluminum, the insulation layer 8 being made of ceramic fiber cotton, and a heat insulation sleeve wrapped around the outside of the wire 3, the housing 1 and the sealing cap 2 being made of stainless steel, and an insulation layer being provided between the inner wall of the housing 1 and the insulation layer 8;

[0029] The support frame includes an externally threaded tube 5 fixedly connected to the bottom surface of the rotating ring 4. The externally threaded tube 5 is threadedly connected to the heating tube 6. Two arc-shaped uprights 12 are symmetrically slidably connected to the bottom surface of the externally threaded tube 5. A storage groove 30 is vertically provided on the top surface of the arc-shaped uprights 12. A guide rod 26 is slidably connected in the storage groove 30. The guide rod 26 is fixedly connected to the bottom wall of the externally threaded tube 5. Two sliding grooves 27 are symmetrically provided on the inner wall of the storage groove 30. A slider 29 is slidably connected in the two sliding grooves 27 respectively. The two sliders 29 are symmetrically fixed to the outer edge of the guide rod 26. A spring 28 is fixedly connected between the inside of the sliding groove 27 and the slider 29. A support ring 20 is fixedly connected to the end of the two arc-shaped uprights 12. The support ring 20 abuts against the top surface of the limiting ring 11. The filter element is snapped between the support ring 20 and the externally threaded tube 5.

[0030] The filter element includes two first filter plates 9 symmetrically snapped between the external threaded tube 5 and the support ring 20. The second filter plate 10 is snapped inside the support ring 20. The second filter plate 10 and the first filter plate 9 are snapped together. Multiple first blind holes 25 are provided on both sides of the arc-shaped upright 12. A first positioning post 23 is inserted into each blind hole. The first positioning post 23 is fixedly connected to the end face of the first filter plate 9. Multiple second blind holes 24 are vertically provided on the top surface of the first filter plate 9. A second positioning post is inserted into each blind hole. The second positioning post is vertically fixed to the bottom surface of the external threaded tube 5.

[0031] The inner side of the support ring 20 is symmetrically provided with two second slots 17, and a second block 18 is respectively engaged in the two second slots 17. The two second blocks 18 are symmetrically fixed to the outside of the second filter plate 10. The outer side of the support ring 20 is symmetrically provided with two first slots 13, and a first block 14 is respectively engaged in the two first slots 13. A first filter plate 9 is respectively fixedly connected to the top surface of the two first blocks 14. A positioning hole 16 communicating with the second slot 17 passes through the first slot 13. A positioning pin 15 slides through the positioning hole 16. The positioning pin 15 is fixedly connected to the first filter plate 9. A positioning groove 19 is provided on the outer side of the second block 18. The positioning pin 15 is inserted into the positioning groove 19.

[0032] By connecting a support frame to the heating tube 6 via the internal thread 7, and snapping a filter element into the support frame, it is easy to filter the scale in the hot water passing through the heating tube 6. At the same time, it is easy to remove the filter element from the heating tube 6 to clean the scale accumulated on the filter element, preventing excessive scale buildup inside the heating tube 6 from affecting the heating efficiency of the heating tube 6 and thus reducing the energy consumption of the heating tube 6.

[0033] Working principle: During use, the hot water in the heating tube 6 is filtered by the second filter plate 10 to remove scale and impurities. The resulting scale will remain on the inner side of the first filter plate 9 and the top surface of the second filter plate 10. When scale needs to be cleaned, the rotating ring 4 is rotated, which drives the external threaded tube 5 to rotate, causing the external threaded tube 5 to rise. The external threaded tube 5 drives the support ring 20 to rise through the arc-shaped upright 12 until the external threaded tube 5 leaves the heating tube 6. Then, the support ring 20 is removed from the heating tube 6, and the external threaded tube 5 is pulled upwards, causing it to rise. At the same time, the spring 28 is compressed, causing the bottom of the external threaded tube 5 to fall. The second positioning post moves out of the second blind hole 24 on the top surface of the first filter plate 9, releasing the limiting fixation between the external threaded tube 5 and the first filter plate 9. Then, the two first filter plates 9 are pulled outward, causing the first locking block 14 to move out of the first locking groove 13. At the same time, the first locking block 14 drives the positioning pin 15 to move out of the positioning groove 19 and the positioning hole 16, and the first positioning post 23 moves out of the first blind hole 25, thereby releasing the limiting fixation of the first filter plate 9 on the second filter plate 10. Then, the second filter plate 10 is removed from the support ring 20, and the first filter plate 9 and the second filter plate 10 are cleaned respectively. After completion, firstly, the second filter plate 10 is installed inside the support ring 20, so that the second locking block 18 is engaged in the second locking groove 17. Then, the external threaded tube 5 is pulled upward, causing the external threaded tube 5 to rise. At the same time, the spring 28 is compressed, increasing the distance between the external threaded tube 5 and the support ring 20. Then, the first filter plate 9 is pushed and engaged in the first locking groove 13 by the first locking block 14 at the bottom. At the same time, the positioning pin 15 at the end of the first locking block 14 passes through the first locking groove 13 and the positioning hole 16 in sequence, passes through the second locking groove 17, and is inserted into the positioning groove 19 on the side of the second locking groove 17. At the same time, the first positioning post 23 is inserted. The first blind hole 25 is inserted, and then the external threaded tube 5 is released. The spring 28, which is in a compressed state, is reset. When the spring 28 is reset, it drives the external threaded tube 5 to descend, so that the second positioning post on the bottom surface of the external threaded tube 5 is inserted into the second blind hole 24 on the top surface of the first filter plate 9. Then the first filter plate 9 and the second filter plate 10 are installed back into the heating tube 6 and fixed in the heating tube 6 by the external threaded tube 5. At the same time, the bottom surface of the support ring 20 abuts against the top surface of the limiting ring 11, limiting and fixing the axial displacement direction of the support ring 20. Thus, the filtration of scale in the heating tube 6 and the cleaning of the filtered scale are completed.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-power semiconductor heater, comprising a housing (1), characterized in that: The top surface of the housing (1) is threaded with a sealing cap (2). A heating tube (6) is fixedly sleeved inside the housing (1). The heating tube (6) is wrapped with an insulation layer (8). The heating tube (6) has multiple mounting slots (21) on its outside. Each mounting slot (21) has a PTC semiconductor heating element (22). The top wall of the mounting slot (21) has a wire hole. A wire (3) is threaded through the wire hole. The wire (3) is fixedly connected to the PTC semiconductor heating element (22). The upper inner wall of the heating tube (6) has an internal thread (7). The inner wall of the heating tube (6) is threaded with a support frame. A filter element is provided inside the support frame. A rotating ring (4) is fixedly connected to the top surface of the support frame. The bottom surface of the support frame abuts against a limiting ring (11). The limiting ring (11) is fixedly connected inside the heating tube (6).

2. The low-power semiconductor heater according to claim 1, characterized in that: The support frame includes an externally threaded tube (5) fixedly connected to the bottom surface of the rotating ring (4). The externally threaded tube (5) is threadedly connected inside the heating tube (6). The bottom surface of the externally threaded tube (5) is symmetrically slidably connected to two arc-shaped uprights (12). The ends of the two arc-shaped uprights (12) are fixedly connected to a support ring (20). The support ring (20) abuts against the top surface of the limiting ring (11). The filter element is snapped between the support ring (20) and the externally threaded tube (5).

3. A low-power semiconductor heater according to claim 2, characterized in that: The filter element includes two first filter plates (9) symmetrically snapped between the external threaded pipe (5) and the support ring (20), and a second filter plate (10) snapped inside the support ring (20), with the second filter plate (10) snapped into the first filter plate (9).

4. A low-power semiconductor heater according to claim 3, characterized in that: The inner side of the support ring (20) is symmetrically provided with two second slots (17), and a second block (18) is respectively engaged in the two second slots (17). The two second blocks (18) are symmetrically fixed on the outside of the second filter plate (10). The outer side of the support ring (20) is symmetrically provided with two first slots (13), and a first block (14) is respectively engaged in the two first slots (13). The top surface of the two first blocks (14) is respectively fixedly connected to a first filter plate (9). A positioning hole (16) communicating with the second slot (17) passes through the first slot (13). A positioning pin (15) slides through the positioning hole (16). The positioning pin (15) is fixedly connected to the first filter plate (9). A positioning groove (19) is provided on the outer side of the second block (18). The positioning pin (15) is inserted into the positioning groove (19).

5. A low-power semiconductor heater according to claim 3, characterized in that: The top surface of the arc-shaped upright (12) is vertically provided with a storage groove (30), and a guide rod (26) is slidably connected in the storage groove (30). The guide rod (26) is fixedly connected to the bottom wall of the external threaded tube (5).

6. A low-power semiconductor heater according to claim 5, characterized in that: The inner wall of the storage groove (30) is symmetrically provided with two sliding grooves (27), and sliders (29) are slidably connected in the two sliding grooves (27). The two sliders (29) are symmetrically fixed to the outer edge of the guide rod (26). A spring (28) is fixedly connected between the inside of the sliding groove (27) and the slider (29).

7. A low-power semiconductor heater according to claim 3, characterized in that: The arc-shaped upright (12) has multiple first blind holes (25) on both sides, and a first positioning post (23) is inserted into each blind hole. The first positioning post (23) is fixedly connected to the end face of the first filter plate (9). The top surface of the first filter plate (9) has multiple second blind holes (24) vertically, and a second positioning post is inserted into each blind hole. The second positioning post is vertically fixed to the bottom surface of the external threaded tube (5).

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