A waterproof device for a washing machine heater

Abstract

The utility model relates to a kind of waterproof equipment of washing machine heater, belong to washing machine technical field;The waterproof equipment of washing machine heater includes: heating pipe, the heating pipe includes tube body, heating cavity is formed inside tube body, heating resistance wire is installed inside heating cavity, high-purity crystalline state magnesium oxide powder layer is filled between heating resistance wire and heating cavity inner wall;The waterproof equipment of washing machine heater by high-purity crystalline state magnesium oxide powder layer filled between heating resistance wire and heating cavity inner wall;The resistance heating generated after the heating resistance wire of filled magnesium oxide powder layer can be efficiently conducted to heating cavity inner wall, improve heating efficiency.

Description

Technical Field

[0001] This utility model relates to a waterproof device for a washing machine heater, belonging to the field of washing machine technology. Background Technology

[0002] The washing machine heater is a very important component of a washing machine, especially in front-loading washing machines (and some high-end top-loading washing machines) that support hot water washing or heated washing functions. Its main function is to heat the cold water to the set washing temperature.

[0003] The washing machine heaters provided in related technologies mostly have this structural form: including a heating mechanism, which includes aluminum heat sinks, ceramic tubes, and heating cores. The heating core is the heating component of the heater. The heating core is located inside the ceramic tube. Multiple aluminum heat sinks are arranged in parallel, and ceramic tubes are located between adjacent aluminum heat sinks. The aluminum heat sinks and ceramic tubes are arranged alternately. At the same time, the ceramic tubes are square, and the aluminum heat sinks are square.

[0004] This washing machine heater uses alternating aluminum heat sinks and ceramic tubes, with both the ceramic tubes and aluminum heat sinks designed to be square. This design allows for a larger contact area between the square ceramic tubes and aluminum heat sinks, thereby improving the conductivity of the entire heating mechanism and increasing heating efficiency.

[0005] However, this type of washing machine heater also has some drawbacks. For example, there is a gap between the heating core inside the ceramic tube and the inner wall of the ceramic tube. This gap will directly affect the heat conduction efficiency of the heating core to the inner wall of the ceramic tube. Moreover, when leakage occurs at both ends of the ceramic tube, the leaked washing liquid will enter the ceramic tube and cause oxidation and corrosion to the heating core, reducing the service life of the heating core. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a waterproof device for a washing machine heater, which solves the problem that there is a gap between the heating core inside the ceramic tube and the inner wall of the ceramic tube in the washing machine heater mentioned in the background. This gap directly affects the heat conduction efficiency of the heating core to the inner wall of the ceramic tube, and when leakage occurs at both ends of the ceramic tube, the leaked washing liquid enters the ceramic tube and causes oxidation and corrosion to the heating core, reducing the service life of the heating core.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A waterproofing device for a washing machine heater, the waterproofing device for the washing machine heater comprising:

[0009] The heating tube includes a tube body made of high-temperature resistant stainless steel; a heating cavity is formed inside the tube body, a heating resistance wire is installed inside the heating cavity, and a layer of high-purity crystalline magnesium oxide powder is filled between the heating resistance wire and the inner wall of the heating cavity.

[0010] The heating tube is equipped with a front electrode rod and a rear electrode rod at both ends. One end of the front electrode rod and one end of the rear electrode rod are electrically connected to both ends of the heating resistance wire. The front electrode rod is positioned and fixed by a front waterproof end cap at the point where it passes through the inner wall of the heating tube, and the rear electrode rod is positioned and fixed by a rear waterproof end cap at the point where it passes through the inner wall of the heating tube.

[0011] Meanwhile, epoxy resin is filled at the outer side of the front electrode rod and the axis of the front waterproof end cap, as well as at the outer side of the rear electrode rod and the axis of the rear waterproof end cap.

[0012] Preferably, the heating resistance wire installed inside the heating tube is spiral-shaped.

[0013] Preferably, the waterproof device of the washing machine heater further includes: a front head and a rear head, with a heating tube installed between the front head and the rear head. The number of heating tubes is three, and the three heating tubes are distributed in a staggered manner between the front head and the rear head.

[0014] Preferably, a power receiving post is provided on one side of the front end head, and wiring is arranged inside the power receiving post. A conductive plate is provided inside the front end head, and one end of the front electrode rod is electrically connected to the conductive plate through a wiring harness on the part inside the front end head.

[0015] Preferably, a positioning plate is installed inside the rear end head, and one end of the rear electrode rod passes through the inner wall of the rear end head and is positioned and installed on the positioning plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The waterproof device for the washing machine heater described above has the following advantages compared to current washing machine heaters:

[0018] Through structural improvements to the heater, the heating element includes a tube body made of high-temperature resistant stainless steel. This tube body can heat the water containing laundry detergent inside the washing machine through heat transfer, while also being resistant to the corrosive effects of the detergent. A heating chamber is formed inside the tube body, and a heating resistance wire is installed inside the heating chamber. A layer of high-purity crystalline magnesium oxide powder is filled between the heating resistance wire and the inner wall of the heating chamber.

[0019] The filling layer of magnesium oxide powder can efficiently conduct the resistance heating generated by the heating resistance wire after it is energized to the inner wall of the heating cavity, thereby improving the heating efficiency.

[0020] In addition, epoxy resin is filled at the axial position between the front electrode rod and the front waterproof end cap, and at the axial position between the rear electrode rod and the rear waterproof end cap. This ensures the sealing of the connection between the front electrode rod and the front waterproof end cap, and between the rear electrode rod and the rear waterproof end cap, thereby improving the anti-seepage performance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a waterproof device for a washing machine heater according to the present invention.

[0023] Figure 2 This is a schematic diagram showing the installation of the front end and heating tube of a waterproof device for a washing machine heater according to this utility model.

[0024] Figure 3 This is a schematic diagram showing the installation of the rear end of a waterproof device for a washing machine heater according to this utility model, including the heating element.

[0025] Figure 4 This is a schematic diagram of the internal structure of the heating tube of a waterproof device for a washing machine heater according to this utility model.

[0026] In the diagram: 1-Connecting wire, 2-Electrical terminal, 3-Front end, 4-Heating tube, 5-Rear end, 6-Conductive plate, 7-Wire harness, 8-Front waterproof end cap, 9-Front electrode rod, 10-Rear electrode rod, 11-Rear waterproof end cap, 12-Positioning plate, 13-Magnesium oxide powder layer, 14-Heating resistance wire. 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] Please see Figure 1-4 This utility model provides a technical solution:

[0029] A waterproofing device for a washing machine heater, the waterproofing device for the washing machine heater comprising:

[0030] Heating element 4 is installed inside the heater of the washing machine. When the heating element 4 is powered on, it is used to heat the inside of the washing machine.

[0031] The heating tube 4 includes a tube body made of high-temperature resistant stainless steel, which can heat the water containing laundry detergent inside the washing machine through heat transfer, while also being resistant to the corrosive effect of laundry detergent.

[0032] The tube body forms a heating chamber inside, and a heating resistance wire 14 is installed inside the heating chamber. When the heating resistance wire 14 is energized, it generates heat through resistance and transfers the heat to the water source with added washing ingredients inside the washing machine through the inner wall of the tube body.

[0033] A magnesium oxide powder layer 13 is filled between the heating resistance wire 14 and the inner wall of the heating cavity. The magnesium oxide powder layer 13 is in a high-purity crystalline state and has several advantages. For example, it has good electrical insulation, ensuring insulation between the heating resistance wire 14 and the inner wall of the heating cavity and preventing short circuits. At the same time, it can efficiently conduct the resistance heating generated by the energized heating resistance wire 14 to the inner wall of the heating cavity, thereby enabling the heating tube 4 to heat the water source containing washing ingredients inside the washing machine. In addition, the filled crystalline magnesium oxide powder layer 13 also has good chemical stability, is not easily decomposed in high-temperature environments, and has stable properties. Moreover, the filled magnesium oxide powder layer 13 has very low hygroscopicity, which does not easily reduce its insulation performance.

[0034] The heating tube 4 is equipped with a front electrode rod 9 and a rear electrode rod 10 at its two ends, respectively. One end of the front electrode rod 9 and one end of the rear electrode rod 10 are electrically connected to the two ends of the heating resistance wire 14. The front electrode rod 9 is positioned and fixed by the front waterproof end cap 8 at the point where it passes through the inner wall of the heating tube 4, and the rear electrode rod 10 is positioned and fixed by the rear waterproof end cap 11 at the point where it passes through the inner wall of the heating tube 4. The front electrode rod 9 and the rear electrode rod 10 are used to connect to an external power source and form a complete circuit with the heating resistance wire 14, so that the heating resistance wire 14 is heated after being energized.

[0035] Meanwhile, epoxy resin is filled at the outer side of the front electrode rod 9 and the axial position of the front waterproof end cap 8, and at the outer side of the rear electrode rod 10 and the axial position of the rear waterproof end cap 11. This ensures the sealing of the connection between the front electrode rod 9 and the front waterproof end cap 8, and between the rear electrode rod 10 and the rear waterproof end cap 11, improves the anti-seepage performance, and ensures that water cannot enter the magnesium oxide powder layer 13 along the rear electrode rod 10 or the front electrode rod 9.

[0036] Furthermore, in an embodiment of this utility model, the heating resistance wire 14 installed inside the heating tube 4 is spiral-shaped. By designing the heating resistance wire 14 as a spiral, the heating length of the heating resistance wire 14 can be extended, allowing the heating resistance wire 14 to provide more heating heat.

[0037] Please refer to Figure 13. In one embodiment of this utility model, the waterproof device for the washing machine heater further includes:

[0038] The front end 3 and the rear end 5 are connected by three heating tubes 4, which are staggered and spaced apart between the front end 3 and the rear end 5. The front end 3 and the rear end 5 work together to seal and waterproof both ends of the heating tubes 4 and position them, thus assembling a complete waterproof washing machine heater.

[0039] Specifically, a power receiving post 2 is provided on one side of the front end head 3, and a wiring 1 is arranged inside the power receiving post 2. A conductive plate 6 is provided inside the front end head 3, and one end of the front electrode rod 9 is electrically connected to the conductive plate 6 through a wiring harness 7 on the part located inside the front end head 3.

[0040] In the embodiment of this utility model, after power is supplied through the wiring 1 provided inside the power supply post 2, the current is transmitted to the position of the conductive plate 6 through the wiring 1, and then transmitted to the front electrode rod 9 through the wiring bundle 7. Finally, it is transmitted to the heating resistance wire 14 provided inside the heating tube 4 through the front electrode rod 9, so that the heating resistance wire 14 is energized and performs electric heating operation.

[0041] Please see Figure 3 In one embodiment of the present invention, a positioning plate 12 is installed inside the rear end head 5, and one end of the rear electrode rod 10 passes through the inner wall of the rear end head 5 and is positioned and installed on the positioning plate 12.

[0042] The positioning plate 12 can position and fix the rear electrode rod 10 installed inside the rear end head 5, and at the same time, it can make the heating resistance wire 14 and the positioning plate 12 form a complete circuit.

[0043] The workflow of this embodiment is as follows:

[0044] After power is supplied to the wiring 1, the current is transmitted to the conductive plate 6 through the wiring 1, then to the front electrode rod 9 through the wiring harness 7, and finally to the heating resistance wire 14 set inside the heating tube 4 through the front electrode rod 9, so that the heating resistance wire 14 is energized to perform electric heating operation.

[0045] By setting three heating tubes 4 to heat simultaneously, the heating efficiency of the entire washing machine heater's waterproof device can be improved.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof device for a washing machine heater, characterized in that... include: Heating tube (4), the heating tube (4) includes a tube body made of high temperature resistant stainless steel; A heating chamber is formed inside the tube, and a heating resistance wire (14) is installed inside the heating chamber. A high-purity crystalline magnesium oxide powder layer (13) is filled between the heating resistance wire (14) and the inner wall of the heating chamber. The heating tube (4) is equipped with a front electrode rod (9) and a rear electrode rod (10) at both ends. One end of the front electrode rod (9) and one end of the rear electrode rod (10) are electrically connected to both ends of the heating resistance wire (14). The front electrode rod (9) is positioned and fixed by the front waterproof end cap (8) at the position where it passes through the inner wall of the heating tube (4), and the rear electrode rod (10) is positioned and fixed by the rear waterproof end cap (11) at the position where it passes through the inner wall of the heating tube (4). At the same time, epoxy resin is filled at the axial position between the outer side of the front electrode rod (9) and the front waterproof end cap (8) and the axial position between the outer side of the rear electrode rod (10) and the rear waterproof end cap (11).

2. The waterproof device for a washing machine heater according to claim 1, characterized in that: The heating resistance wire (14) installed inside the heating tube (4) is spiral-shaped.

3. A waterproof device for a washing machine heater according to any one of claims 1 or 2, characterized in that: The waterproof device of the washing machine heater also includes: a front head (3) and a rear head (5), with a heating tube (4) installed between the front head (3) and the rear head (5). There are three heating tubes (4), which are distributed in a staggered manner between the front head (3) and the rear head (5).

4. A waterproof device for a washing machine heater according to claim 3, characterized in that: The front end head (3) is provided with a power receiving post (2) on one side, and wiring (1) is arranged inside the power receiving post (2). The front end head (3) is provided with a conductive plate (6). One end of the front electrode rod (9) is located inside the front end head (3) and is electrically connected to the conductive plate (6) through a wiring harness (7).

5. A waterproof device for a washing machine heater according to claim 3, characterized in that: The rear end head (5) is equipped with a positioning plate (12), and one end of the rear electrode rod (10) passes through the inner wall of the rear end head (5) and is positioned on the positioning plate (12).

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