Paster type PTC heater for water tank

Abstract

The utility model discloses a surface-mounted PTC heater for a water tank, which comprises a heater body provided with a mounting part, and the mounting part is provided with a water outlet pipe; the heating assembly is mounted in the mounting part, is provided with a through hole for avoiding the water outlet pipe, and comprises a first insulating substrate, a first electrode plate, a heating sheet, a second electrode plate and a second insulating substrate which are sequentially arranged, a heat dissipation plate is arranged on the side face of the second insulating substrate, a plurality of heat dissipation sheets are arranged on the heat dissipation plate, and the heat dissipation sheets are arranged around the through hole. The water heater has the advantages that the heating assembly does not need to be inserted into the heater body and is arranged outside the heater body, the problems of poor sealing performance, insufficient pressure resistance and poor corrosion resistance are solved, the service life of the whole heater is prolonged, and the safety and reliability of long-term use of the water heater are improved.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically to a patch-type PTC heater for a water tank. Background Technology

[0002] PTC heaters use PTC ceramic as the core heating element. Compared with traditional heating wires, heating tubes, and far-infrared quartz heaters, they offer advantages such as automatic temperature control, a wide operating voltage range, no open flame, safety, reliability, and long lifespan. In the field of high-power heating, the application range of PTC heaters continues to expand. Besides air heating, PTC water heaters are now widely used in home recreational pools (SPA), underfloor heating, electric water heaters, and new energy vehicle battery thermal management, for rapidly heating water or automotive antifreeze. Correspondingly, the housing of these water heaters also requires higher standards to meet these performance demands.

[0003] Existing instantaneous PTC water heaters typically use a PTC heating element that passes directly through a cover plate, and then the heating aluminum tube and cover plate are placed into the water channel to form the PTC water heater. However, these heaters are relatively large, have long heating channels, and the water channel and heating element are separate components. The heating element is directly inserted into the water chamber through the cover plate and sealed with glue and screws. This results in poor sealing performance, pressure resistance, and corrosion resistance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a patch-type PTC heater for water tanks. The heater is attached to the bottom of the water tank but not on the same side as the water, thereby solving the problems of poor sealing, insufficient pressure resistance and poor corrosion resistance.

[0005] Specifically, this utility model discloses a patch-type PTC heater for a water tank, comprising:

[0006] The heater body is provided with a mounting part, and the mounting part is provided with a water outlet pipe;

[0007] The heating assembly is installed in the mounting section and has a through hole for avoiding the water outlet pipe. It includes an insulating substrate one, an electrode plate one, a heating plate, an electrode plate two, and an insulating substrate two arranged in sequence. A heat dissipation plate is provided on the side of the insulating substrate two, and multiple heat dissipation fins are provided on the heat dissipation plate. The multiple heat dissipation fins are arranged around the through hole.

[0008] The advantages of adopting the above technical solution are that the heating component does not need to be inserted into the heater body and is set outside the heater body, which solves the problems of poor sealing, insufficient pressure resistance and poor corrosion resistance, extends the service life of the entire heater, and improves the safety and reliability of the water heater in long-term use.

[0009] Furthermore, the insulating substrate has positioning sleeves on its two sides, and the positioning sleeves have a first limiting hole and a second limiting hole. The first electrode plate is connected to a first wire harness, which passes through the first limiting hole. The second electrode plate is also provided with a second wire harness, which passes through the second limiting hole.

[0010] The advantage of adopting the above technical solution is that the positioning sleeve plays a positioning role, is used to fix the wire harness connecting electrode plate one and electrode plate two, facilitates subsequent wiring, and has good insulation performance and limiting function.

[0011] Furthermore, the heat sink is generally arc-shaped, and multiple heat sinks are arranged around the water outlet pipe.

[0012] The advantage of adopting the above technical solution is that the arc-shaped heat sink directs most of the heat towards the center, ensuring that the water outlet pipe in the center is heated and ensuring the utilization rate of heat. At the same time, the heat sinks set in multiple places can also improve the heating efficiency.

[0013] Furthermore, the insulating substrate and the electrode sheet are annular components, the inner diameter of the insulating substrate is 3-6 mm smaller than the inner diameter of the electrode sheet, and the outer diameter of the insulating substrate is 2-8 mm larger than the outer diameter of the electrode sheet.

[0014] Furthermore, the second insulating substrate and the second electrode sheet are annular components. The inner diameter of the second insulating substrate is 3-6 mm smaller than the inner diameter of the second electrode sheet, and the outer diameter of the second insulating substrate is 2-8 mm larger than the outer diameter of the second electrode sheet.

[0015] The advantage of adopting the above technical solution is that, during installation, the electrode plates can be effectively protected by the setting of insulating substrate one and insulating substrate two, ensuring a safe distance between conductors. At the same time, the electrode plates will not come into contact with the water outlet pipe or the heater body, ensuring safe use.

[0016] Furthermore, the heating assembly is sealed with insulating adhesive.

[0017] The advantage of adopting the above technical solution is that the insulating sealant plays a role in insulation and sealing, effectively ensuring safe use, preventing water vapor and impurities from entering, and extending the service life of the entire heater.

[0018] Furthermore, the mounting portion is provided with a groove, and the heating component is installed in the groove.

[0019] The advantage of adopting the above technical solution is that the groove provides protection, avoiding collisions with the heating component during use or transportation, reducing damage to the heating component, and at the same time, the excess heat generated preheats the water in the heater, improving the heat utilization rate.

[0020] Furthermore, both the first and second wire harnesses are provided with connection terminals.

[0021] The advantage of adopting the above technical solution is that the setting of the connection terminal facilitates the installation of wire harness one and wire harness two, while also playing a protective role and reducing wire harness damage. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0023] Figure 1 This is an exploded structural diagram of the heating component of this utility model.

[0024] Figure 2 This is a schematic diagram of the overall structure of the patch-type PTC heater for water tanks according to this utility model.

[0025] Figure 3 This is an enlarged view of section A of this utility model.

[0026] Figure 4 This is a schematic diagram of the heating component structure of this utility model.

[0027] Figure 5 This is a schematic diagram of the positioning sleeve structure of this utility model.

[0028] The reference numerals used in the attached figures are as follows:

[0029] Heater body 1; mounting part 11; water outlet pipe 12; insulating substrate 1 2; electrode 1 3; wire harness 1 31; heating element 4; electrode 2 5; wire harness 2 51; insulating substrate 2 6; heat sink 7; heat sink 71; positioning sleeve 8; limiting hole 1 81; limiting hole 2 82; connecting terminal 9. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] like Figure 1-5 As shown, this utility model discloses a patch-type PTC heater for a water tank, comprising:

[0032] Heater body 1, wherein the heater body 1 is provided with mounting part 11, and mounting part 11 is provided with water outlet pipe 12;

[0033] The heating assembly is installed in the mounting part 11 and has a through hole for avoiding the water outlet pipe 12. It includes an insulating substrate 1 2, an electrode 1 3, a heating element 4, an electrode 2 5 and an insulating substrate 2 6 arranged in sequence. A heat dissipation plate 7 is provided on the side of the insulating substrate 2 6. A plurality of heat dissipation fins 71 are provided on the heat dissipation plate 7 and the plurality of heat dissipation fins 71 are arranged around the through hole.

[0034] The advantage of adopting the above technical solution is that the heating component does not need to be inserted into the heater body 1, but is set outside the heater body 1, which solves the problems of poor sealing, insufficient pressure resistance and poor corrosion resistance, extends the service life of the entire heater, and improves the safety and reliability of the water heater in long-term use.

[0035] Furthermore, a positioning sleeve 8 is provided on the side of the insulating substrate 2 6. The positioning sleeve 8 is provided with a limiting hole 1 81 and a limiting hole 2 82. The electrode sheet 1 3 is connected to a wire harness 1 31, which passes through the limiting hole 1 81. The electrode sheet 2 5 is provided with a wire harness 2 51, which passes through the limiting hole 2 82. The positioning sleeve 8 is made of high-temperature resistant silicone material. The insulating substrate 2 6 and the heat sink 7 are provided with a clearance groove for avoiding the positioning sleeve 8. The positioning sleeve 8 can be fixed in the clearance groove by adhesive to prevent the positioning sleeve 8 from moving. The positioning sleeve 8 is provided to fix the wire harness connecting the electrode sheet 1 3 and the electrode sheet 2 5, which facilitates subsequent wiring and has good insulation performance and limiting function.

[0036] In some implementations, the heat sink 71 is arc-shaped, and multiple heat sinks 71 are arranged around the water outlet pipe 12. The multiple heat sinks 71 are arranged in multiple groups to surround the water outlet pipe 12 extending from the center. The arc-shaped heat sink 71 causes most of the heat to be dissipated towards the center, ensuring that the water outlet pipe 12 in the center is heated and ensuring the utilization rate of heat. At the same time, the heat sinks 71 arranged in multiple places can also improve the heating efficiency.

[0037] In some embodiments, the insulating substrate 2 and the electrode sheet 3 are annular components, the inner diameter of the insulating substrate 2 is 3-6 mm smaller than the inner diameter of the electrode sheet 3, and the outer diameter of the insulating substrate 2 is 2-8 mm larger than the outer diameter of the electrode sheet 3.

[0038] Furthermore, the insulating substrate 2 6 and the electrode plate 2 5 are annular components. The inner diameter of the insulating substrate 2 6 is 3-6 mm smaller than the inner diameter of the electrode plate 2 5, and the outer diameter of the insulating substrate 2 6 is 2-8 mm larger than the outer diameter of the electrode plate 2 5. The inner holes of the insulating substrate 1 2 and the insulating substrate 2 6 are fitted to the water outlet pipe 12. The insulating substrate 1 2 and the insulating substrate 2 6 are the same size. The heating element 4 is a PTC heating element 4, which is also an annular component. The inner diameter of the heating element 4 is larger than the insulating components on both sides, and the overall diameter is smaller than the insulating substrate. The insulating substrate 1 2 is fixed in the mounting part 11 by applying adhesive.

[0039] The advantage of adopting the above technical solution is that, during installation, the electrode plates can be effectively protected by the setting of insulating substrate 1 2 and insulating substrate 2 6, ensuring a safe distance between conductors. At the same time, the electrode plates will not come into contact with the water outlet pipe 12 or the heater body 1, ensuring safe use.

[0040] Furthermore, the heating assembly is sealed with insulating adhesive. The gaps between electrode plate 3 and insulating substrate 2, electrode plate 5 and insulating substrate 6, and positioning sleeve 8 are sealed with insulating adhesive. Electrode plate 3 and electrode plate 5 are glued to both sides of heating element 4. The insulating sealant serves to insulate and seal, effectively ensuring safe use, preventing moisture and impurities from entering, and extending the service life of the entire heater.

[0041] Furthermore, the mounting part 11 is provided with a groove, and the heating component is installed in the groove. The depth of the groove is greater than the thickness of the entire heating component, so that the heating element will not protrude from the side, avoiding collisions to the heating component during use or transportation, reducing damage to the heating component, and also playing a role in heat preservation and improving heat utilization.

[0042] In some implementations, wire harness 31 and wire harness 51 are provided with connecting terminals 9. The connecting terminals 9 are pressed and fixed with the wire harness. The connecting terminals 9 play a supporting and fixing role. The whole wire harness passes through the limiting hole 81 and the limiting hole 82 to fix the wire harness 31 and wire harness 51 and reduce wire harness damage.

[0043] Compared to existing water heaters, this patch-type PTC heater is completely isolated from the water (an extension fitting will be attached at point 12 of the outlet pipe), solving the problems of poor sealing, insufficient pressure resistance, and poor corrosion resistance, thus improving the safety and reliability of the water heater during long-term use. At the same time, its close fit to the bottom of the heating tank and the overall potting process ensure efficient heat transfer and good insulation.

[0044] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A surface-mount PTC heater for a water tank, characterized in that, include: The heater body (1) is provided with a mounting part (11) and a water outlet pipe (12) is provided in the mounting part (11); The heating assembly is installed in the mounting part (11) and has a through hole for avoiding the water outlet pipe (12). It includes an insulating substrate one (2), an electrode plate one (3), a heating plate (4), an electrode plate two (5), and an insulating substrate two (6) arranged in sequence. A heat dissipation plate (7) is provided on the side of the insulating substrate two (6). A plurality of heat dissipation fins (71) are provided on the heat dissipation plate (7), and the plurality of heat dissipation fins (71) are arranged around the through hole.

2. The surface-mount PTC heater for water tanks according to claim 1, characterized in that, The insulating substrate 2 (6) is provided with a positioning sleeve (8) on its side. The positioning sleeve (8) is provided with a limiting hole 1 (81) and a limiting hole 2 (82). The electrode sheet 1 (3) is connected to a wire harness 1 (31). The wire harness 1 (31) passes through the limiting hole 1 (81). The electrode sheet 2 (5) is provided with a wire harness 2 (51). The wire harness 2 (51) passes through the limiting hole 2 (82).

3. The surface-mount PTC heater for water tanks according to claim 1, characterized in that, The heat sink (71) is generally arc-shaped, and multiple heat sinks (71) are arranged around the water outlet pipe (12).

4. The surface-mount PTC heater for water tanks according to claim 1, characterized in that, The insulating substrate (2) and the electrode sheet (3) are annular. The inner diameter of the insulating substrate (2) is 3-6 mm smaller than the inner diameter of the electrode sheet (3), and the outer diameter of the insulating substrate (2) is 2-8 mm larger than the outer diameter of the electrode sheet (3).

5. The surface-mount PTC heater for a water tank according to claim 1, characterized in that, The insulating substrate 2 (6) and the electrode sheet 2 (5) are annular components. The inner diameter of the insulating substrate 2 (6) is 3-6 mm smaller than the inner diameter of the electrode sheet 2 (5), and the outer diameter of the insulating substrate 2 (6) is 2-8 mm larger than the outer diameter of the electrode sheet 2 (5).

6. The surface-mount PTC heater for a water tank according to claim 1, characterized in that, The heating assembly is filled with insulating adhesive for sealing.

7. The surface-mount PTC heater for a water tank according to claim 1, characterized in that, The mounting part (11) is provided with a groove, and the heating component is installed in the groove.

8. The surface-mount PTC heater for a water tank according to claim 2, characterized in that, The first wire harness (31) and the second wire harness (51) are provided with connection terminals (9).

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