Heating tube and drying towel rack

Abstract

The utility model discloses a kind of heating pipe and drying type towel rack, the heating pipe, including outermost steel pipe layer, heat exchange balance layer being arranged in the inside of steel pipe layer, heating element being arranged in the inside of heat exchange balance layer and heating element fixing device being arranged in the opening of the both ends of steel pipe layer. By setting heat exchange balance layer, it is ensured that heating pipe surface temperature is very uniform, temperature difference is small, so as to improve the speed and effect of drying clothes, towel. The introduction of heating element fixing device ensures that heating wire is arranged along the central axis of steel pipe layer, avoids the problem of uneven temperature caused by heating wire position deviation, further improves product performance. Heating element fixing device is also used for the fixation of heat exchange balance layer, enhances the stability and reliability of entire structure.

Description

Technical Field

[0001] This utility model relates to the field of electric towel rack technology, and in particular to a heating element and a drying towel rack. Background Technology

[0002] In modern homes and public places, drying equipment, especially towel racks, is becoming increasingly common. These devices typically use electric heating elements as a heat source, generating heat through heating wires and then transferring the heat to the surface to dry handkerchiefs, towels, and other items. Currently, most commercially available towel racks consist of a vertical tube and multiple heating elements. Each heating element contains a heating wire that converts electrical energy into heat energy to achieve the drying function. This simple structure is easy to manufacture and maintain, hence its widespread use in the market.

[0003] However, existing towel racks still have some problems and shortcomings in practical use: 1. Existing heating tubes simply add a heating wire inside the heating tube, such as patents CN108113545A and CN109497874A. They do not have a dedicated heating element fixing device, which causes the heating wire to be unstable in position inside the heating tube, deviating from the central axis and directly contacting the tube wall.

[0004] 2. The heat generated by the heating wire cannot be quickly and effectively conducted to the entire surface. The surface temperature of the area where the heating element is in contact with the heating wire is high, while the surface temperature of the area where it is not in contact with the heating wire is low, resulting in uneven surface temperature of the heating element. These uneven temperature distribution problems will lead to unsatisfactory drying results, and towels and clothes in some areas will not be effectively dried. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the prior art by providing a heating element and a drying towel rack.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: A heating tube includes an outermost steel pipe layer, a heat exchange balance layer disposed inside the steel pipe layer, a heating element disposed inside the heat exchange balance layer, and a heating element fixing device disposed at the openings at both ends of the steel pipe layer.

[0007] A further technical solution is that the heating element fixing device includes a sheath and a wire clamp. The sheath is inserted into the interior of the steel pipe layer. The sheath has a first through hole along the axial direction. The wire clamp is inserted into the first through hole and is snapped together with the sheath. The wire clamp has a fixing hole.

[0008] A further technical solution is that the end of the sheath is provided with a positioning boss, the outer diameter of the positioning boss is adapted to the inner diameter of the heat exchange balance layer, the heat exchange balance layer is sleeved on the positioning boss, and the end of the heat exchange balance layer abuts against the end of the sheath.

[0009] A further technical solution is that the sheath is provided with a sensor mounting slot.

[0010] A further technical solution is that the heating element is a heating wire, which is arranged along the central axis of the steel pipe layer, and the heating wire passes through the first through hole and the fixing hole in sequence.

[0011] A further technical solution is that the heating wire includes a heating wire body, and the heating wire body is covered with a fiber winding layer and a silicone protective layer in sequence on its outer side.

[0012] A further technical solution is that the heating element is a heating plate, the two ends of the heating plate are connected to heating plate leads, the end of the heating plate abuts against the end of the positioning boss, and the heating plate leads pass through the first through hole and the fixing hole in sequence.

[0013] This utility model also provides a drying towel rack, including two vertical tubes arranged symmetrically and at least one set of heating tubes arranged between the two vertical tubes, wherein the heating tube set includes at least one of the above-mentioned heating tubes.

[0014] A further technical solution is that the heating tube group has three groups, each group of heating tubes has a temperature sensor, and one of the vertical tubes is equipped with a controller, which is connected to the heating element and the temperature sensor.

[0015] A further technical solution is that the vertical tube includes a vertical plate, a vertical cover, an end cap, and a decorative cover. The vertical plate and the vertical cover are fastened together to form a tube body with openings at both the top and bottom. The end caps cover the openings at both ends of the tube body, and the decorative cover is installed on the outside of the end caps.

[0016] The beneficial effects of adopting the above technical solution are as follows: By setting up a heat exchange balance layer, the surface temperature of the heating element is ensured to be very uniform with small temperature differences, thereby improving the speed and effectiveness of drying clothes and towels. At the same time, the heat exchange balance layer has good thermal conductivity and a high heat capacity ratio, which can quickly absorb the heat generated by the heating wire and evenly transfer it to the outermost steel pipe layer, improving thermal efficiency and saving energy.

[0017] The dual protection of the fiber winding layer and the silicone protective layer not only prevents damage to the heating wire but also provides electrical protection, avoiding the risk of electric shock and improving product safety.

[0018] The introduction of the heating element fixing device ensures that the heating wire is positioned along the central axis of the steel tube layer, avoiding uneven temperature caused by heating wire misalignment and further improving product performance. The heating element fixing device is also used to fix the heat exchange balance layer, enhancing the stability and reliability of the entire structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the heating tube structure in Example 1; Figure 2 This is a cross-sectional view of the heating tube in Example 1; Figure 3 This is a structural diagram of the sheath; Figure 4 This is a schematic diagram of the wire clamp structure; Figure 5 This is a schematic diagram of the structure of the heating element fixing device after the temperature sensor is installed; Figure 6 This is a schematic diagram of the structure of the drying towel rack in Example 1; Figure 7 This is a cross-sectional view of the towel rack drying in Example 1; Figure 8 This is an assembly diagram of the drying towel rack in Example 1; Figure 9 This is a structural diagram of the end cap and decorative cap; Figure 10 This is a cross-sectional view of the vertical pipe; Figure 11 This is an assembly diagram of the drying towel rack in Example 2; Figure 12 yes Figure 11 Enlarged view of section A in the middle; Figure 13 This is a cross-sectional view of the drying towel rack in Example 3; Figure 14 This is a cross-sectional view of the heating tube in Example 3.

[0020] In the diagram: 1. Vertical pipe; 1-1. Vertical plate; 1-2. Vertical cover; 1-3. End cap; 1-4. Decorative cover; 2. Heating tube; 2-1. Steel pipe layer; 2-2. Heat exchange balance layer; 2-3. Heating wire; 2-3-1. Heating wire body; 2-3-2. Fiber winding layer; 2-3-3. Silicone protective layer; 2-4. Heating element; 2-4-1. Heating element lead wire; 3. Sheath; 3-1. First through hole; 3-2. Positioning boss; 3-3. Sensor mounting slot; 4. Wire clamp; 4-1. Heating wire fixing hole; 5. Temperature sensor; 6. Controller. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Example 1: As Figure 1-5 As shown, a heating tube is disclosed, including an outermost steel pipe layer 2-1, a heat exchange balance layer 2-2 disposed inside the steel pipe layer 2-1, a heating element disposed inside the heat exchange balance layer 2-2, and a heating element fixing device disposed at the openings at both ends of the steel pipe layer 2-1.

[0024] The heating element is a heating wire 2-3, which is arranged along the central axis of the steel pipe layer 2-1. The heating wire 2-3 includes a heating wire body 2-3-1, and the heating wire body 2-3-1 is covered with a fiber winding layer 2-3-2 and a silicone protective layer 2-3-3 in sequence.

[0025] The fiber winding layer 2-3-2 is used to cover and protect the heating wire body 2-3-1, preventing it from breaking due to tensile stress during use. The silicone protective layer 2-3-3 is located outside the fiber winding layer 2-3-2 and is mainly used for heat transfer and electrical insulation, ensuring that no electric shock accidents occur during use. The heat exchange balance layer 2-2 is located outside the silicone protective layer 2-3-3. It has excellent thermal conductivity and a high heat capacity ratio, enabling it to quickly absorb the heat generated by the heating wire body 2-3-1 and, through its high thermal conductivity, evenly transfer the heat to the outermost steel tube layer 2-1, ensuring a uniform surface temperature of the steel tube layer 2-1.

[0026] This structural design allows the heat generated by the heating wire body 2-3-1 to be rapidly and evenly distributed across the entire surface of the steel tube layer 2-1, thereby improving thermal efficiency and preventing localized overheating. The materials selected for the heat exchange balance layer (such as ceramics, magnesium oxide powder, copper, and aluminum) all possess excellent thermal conductivity and high-temperature resistance, enabling them to maintain stable performance during long-term use.

[0027] In summary, this heating element design not only improves the uniformity and efficiency of the heating process but also ensures safety during use, making it ideal for applications such as electric towel racks that require a high-efficiency, uniform heat source.

[0028] The heat exchange balancing layer 2-2 is made of materials such as ceramic, magnesium oxide powder, copper, or aluminum. These materials have good thermal conductivity and a high heat capacity ratio, which can quickly absorb the heat generated by the heating wire 2-3 and evenly transfer the heat to the outermost steel pipe layer 2-1 through their own high thermal conductivity, ensuring that the surface temperature of the steel pipe layer 2-1 is uniform.

[0029] In this embodiment, a ceramic tube is used as the heat exchange balancing layer 2-2. The high heat capacity of ceramics can effectively absorb and store heat, which is then uniformly transferred to the steel tube layer 2-1. This not only ensures the uniformity of the heating tube surface temperature but also reduces heat loss and improves energy utilization efficiency. Similarly, using magnesium oxide powder, copper, or aluminum as the heat exchange balancing layer 2-2 can achieve similar effects.

[0030] The heating element fixing device includes a sheath 3 and a wire clamp 4. The sheath 3 is inserted into the steel pipe layer 2-1. The sheath 3 has a first through hole 3-1 along its axial direction. The wire clamp 4 is inserted into the first through hole 3-1 and snaps into the sheath 3. The wire clamp 4 has a fixing hole 4-1. The heating wire 2-3 passes through the first through hole 3-1 and the fixing hole 4-1 in sequence. This design ensures that the heating wire 2-3 is stably positioned within the steel pipe layer 2-1 and will not deviate from the central axis, thus improving heating efficiency and temperature control accuracy.

[0031] The sheath 3 has a positioning boss 3-2 at one end. The outer diameter of the positioning boss 3-2 is adapted to the inner diameter of the heat exchange balance layer 2-2. The end of the heat exchange balance layer 2-2 is fitted onto the positioning boss 3-2 and abuts against the end of the sheath 3. This design ensures that the heat exchange balance layer 2-2 is fixed in position to the heating tube 2, further improving the stability and safety of the heating tube.

[0032] The sheath 3 is provided with a sensor mounting slot 3-3 for mounting a temperature sensor 5.

[0033] Reference Figure 6-10 A towel drying rack is disclosed, comprising two vertical tubes 1 arranged symmetrically and at least one set of heating tubes disposed between the two vertical tubes 1, wherein the heating tubes include at least one of the aforementioned heating tubes 2.

[0034] The vertical tube 1 is mainly used to support and fix the heating tube assembly. By symmetrically setting two vertical tubes 1, the stability of the heating tube assembly can be ensured, making the entire dryer towel rack structure more stable and safer and more reliable to use.

[0035] In a heating element assembly, the heating wires 2-3 of multiple heating elements 2 can be formed by bending and winding a single continuous heating wire. This design reduces the number of connection points of the heating wire and lowers the failure rate.

[0036] In this embodiment, there are three heating tube groups, each equipped with a temperature sensor 5. A controller 6 is mounted on one of the vertical tubes 1, and the controller 6 is connected to the heating wire 2-3 and the temperature sensor 5. The temperature sensor 5 monitors the temperature changes of the heating tube group in real time. Based on the feedback signal from the temperature sensor 5, the controller 6 automatically adjusts the power of the heating wire 2-3 to ensure that the heating tube group operates at the optimal temperature. The automatic adjustment of the power of the heating wire 2-3 via the controller 6 and temperature sensor 5 is prior art and will not be elaborated further here.

[0037] The vertical tube 1 includes a vertical plate 1-1, a vertical cover 1-2, an end cap 1-3, and a decorative cover 1-4. The steel pipe layer 2-1 is fixed to the vertical plate 1-1. The vertical plate 1-1 and the vertical cover 1-2 are interlocked to form a tube body with openings at both ends. The end caps 1-3 cover the openings at both ends of the tube body, and the decorative cover 1-4 is installed on the outside of the end caps 1-3. This structural design is not only aesthetically pleasing but also facilitates installation and maintenance. The stable structure of the vertical tube 1 provides reliable support for the heating element assembly, ensuring the stability and durability of the entire towel drying rack.

[0038] Vertical plate 1-1 and vertical sleeve 1-2 are connected by snap-fit, forming a tube open at both ends. This snap-fit ​​connection method is not only easy to install but also provides a secure connection, ensuring the stability and safety of the vertical tube 1. End cap 1-3 is installed on vertical sleeve 1-2 with screws. This design allows end cap 1-3 to be firmly fixed to the end of vertical sleeve 1-2. Decorative cover 1-4 is connected to end cap 1-3 by snap-fit. Decorative cover 1-4 is not only aesthetically pleasing but also provides protection, concealing the screws and connections of end cap 1-3 for a cleaner appearance. Simultaneously, the snap-fit ​​design makes decorative cover 1-4 easy to disassemble and clean, facilitating maintenance.

[0039] Example 2: Refer to Figure 11 and Figure 12 The difference between this and Embodiment 1 is that the wire clamp 4 is an openable wire clamp, comprising two hinged wire clamp blocks. This design facilitates the installation of the heating wire 2-3.

[0040] Example 3: Reference Figure 13 and Figure 14 The difference between this embodiment and embodiment 1 is that the heating element is a heating element 2-4, the two ends of the heating element 2-4 are connected to heating element leads 2-4-1, the end of the heating element 2-4 abuts against the end of the positioning boss 3-2, and the heating element leads 2-4-1 pass through the first through hole 3-1 and the fixing hole 4-1 in sequence.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heating element, characterized in that: It includes an outermost steel pipe layer (2-1), a heat exchange balance layer (2-2) disposed inside the steel pipe layer (2-1), a heating element disposed inside the heat exchange balance layer (2-2), and a heating element fixing device disposed at the openings at both ends of the steel pipe layer (2-1); the heating element fixing device includes a sheath (3) and a wire clamp (4), the sheath (3) is inserted into the steel pipe layer (2-1), the sheath (3) has a first through hole (3-1) along the axial direction, the wire clamp (4) is inserted into the first through hole (3-1) and is snapped together with the sheath (3), and the wire clamp (4) has a fixing hole (4-1).

2. A heating tube according to claim 1, characterized in that: The end of the sheath (3) is provided with a positioning boss (3-2). The outer diameter of the positioning boss (3-2) is adapted to the inner diameter of the heat exchange balance layer (2-2). The heat exchange balance layer (2-2) is sleeved on the positioning boss (3-2). The end of the heat exchange balance layer (2-2) abuts against the end of the sheath (3).

3. A heating tube according to claim 2, characterized in that: The sheath (3) is provided with a sensor mounting slot (3-3).

4. A heating tube according to claim 3, characterized in that: The heating element is a heating wire (2-3), which is arranged along the central axis of the steel pipe layer (2-1). The heating wire (2-3) passes through the first through hole (3-1) and the fixing hole (4-1) in sequence.

5. A heating tube according to claim 4, characterized in that: The heating wire (2-3) includes a heating wire body (2-3-1), and the heating wire body (2-3-1) is covered with a fiber winding layer (2-3-2) and a silicone protective layer (2-3-3) in sequence.

6. A heating tube according to claim 3, characterized in that: The heating element is a heating element (2-4), and heating element leads (2-4-1) are connected to both ends of the heating element (2-4). The end of the heating element (2-4) abuts against the end of the positioning boss (3-2). The heating element leads (2-4-1) pass through the first through hole (3-1) and the fixing hole (4-1) in sequence.

7. A towel drying rack, characterized in that: It includes two vertical pipes (1) arranged symmetrically and at least one set of heating pipes disposed between the two vertical pipes (1), the heating pipes comprising at least one heating pipe (2) as described in any one of claims 1-6.

8. A towel drying rack according to claim 7, characterized in that: The heating tube assembly has three groups, each group of heating tubes has a temperature sensor (5), and one of the vertical tubes (1) is equipped with a controller (6), which is connected to the heating element and the temperature sensor (5).

9. A towel drying rack according to claim 7, characterized in that: The vertical tube (1) includes a vertical plate (1-1), a vertical cover (1-2), an end cap (1-3), and a decorative cover (1-4). The vertical plate (1-1) and the vertical cover (1-2) are fastened together to form a tube body with openings at both the top and bottom. The end cap (1-3) is placed over the openings at both ends of the tube body. The decorative cover (1-4) is installed on the outside of the end cap (1-3).

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