Electric towel rail and method of controlling the same

Abstract

The application relates to an electric heating towel rack and a control method thereof, which comprises a mounting rack, a glass body, an electric heating element and a compensation heating element. The glass body is mounted on the mounting rack. The electric heating element is arranged on the glass body. The compensation heating element is arranged on the glass body, and the compensation heating element is connected in series with the electric heating element, and the sum of the resistance value of the electric heating element and the resistance value of the compensation heating element is within a preset range. According to the electric heating towel rack, when the electric heating element is formed on the glass body, the resistance value of the compensation heating element is determined according to the resistance value of the electric heating element, the resistance value is compensated through the compensation heating element, and the sum of the resistance value of the electric heating element and the resistance value of the compensation heating element is within the preset range. Therefore, the self-resistance deviation of the electric heating towel rack can be accurately corrected, the total resistance of the whole machine is ensured to be within the preset range, the rated power of the whole machine can be locked, the power of batch products is highly unified, batch production can be realized, and the product quality is improved.

Description

Technical Field

[0001] This application relates to the field of towel rack technology, and in particular to an electric heated towel rack and its control method. Background Technology

[0002] An electric towel rack is a bathroom appliance that dries towels using electric heating. It is primarily used in home bathrooms, hotels, and medical facilities. Its core functions include temperature control and antibacterial properties, auxiliary heating, and bathroom dehumidification, while also providing storage. Some products boast high antibacterial rates.

[0003] Most electric towel racks in related technologies use metal tubes or resistance wires for heating, which are linear heat source structures. However, electric towel racks using metal tubes or resistance wires suffer from various problems such as small heating area, large heat loss, low drying efficiency, uneven temperature, and high energy consumption. Summary of the Invention

[0004] Based on this, it is necessary to provide an electric towel rack and its control method to address at least one problem in the related technologies. This method can improve the consistency of product power, facilitate mass production, and result in higher product quality.

[0005] On one hand, this application provides an electric towel rack, comprising:

[0006] Mounting rack;

[0007] A glass body, wherein the glass body is mounted on the mounting bracket;

[0008] An electric heating element, wherein the electric heating element is disposed on the glass body; and

[0009] A compensating heating element is disposed on the glass body. The compensating heating element is connected in series with the electric heating element, and the sum of the resistance values ​​of the electric heating element and the compensating heating element is within a preset range.

[0010] In one embodiment, the compensating heating element includes a glass fiber heating wire; and / or, the compensating heating element is arranged along the top edge of the glass body.

[0011] In one embodiment, the electric towel rack further includes temperature sensors, wherein at least two temperature sensors are provided, at least one of the temperature sensors is arranged on one side of the glass body along its own width direction, and at least another temperature sensor is arranged on the other side of the glass body along its own width direction.

[0012] In one embodiment, the electric towel rack further includes a controller electrically connected to the temperature sensor, the controller being used to control the operation of the electric heating element based on the temperature sensed by the temperature sensor.

[0013] In one embodiment, the temperature sensor is attached to the compensating heating element, and at least two of the temperature sensors are arranged sequentially at intervals along the top edge of the glass body.

[0014] In one embodiment, there are two temperature sensors, and the distance between the two temperature sensors along the width direction of the glass body is S, where 8cm≤S≤18cm.

[0015] In one embodiment, the electric towel rack further includes a first frame that wraps around the top edge of the glass body. The first frame is connected to the mounting bracket, and the temperature sensor and the compensating heating element are both disposed within the first frame.

[0016] In one embodiment, the electric heating element includes a metal mesh disposed on the glass body, the visible light transmittance of the metal mesh being TL1, TL1 ≥ 80%, or ≥ 85%, or ≥ 90%.

[0017] In one embodiment, the electric heating element includes a plurality of electric heating parts connected in series, each of the electric heating parts extending along a first direction of the glass body, and all the electric heating parts being arranged sequentially along a second direction of the glass body, wherein the first direction and the second direction are arranged at an angle.

[0018] In one embodiment, the electric heating element includes a metal mesh and two electrodes, the two electrodes being respectively connected to opposite ends of the metal mesh along the first direction; for any three electric heating elements arranged sequentially along the second direction, the electrode on one side of the electric heating element located in the middle position along the first direction is electrically connected to the electrode on the same side of the electric heating element located below it, and the electrode on the other side of the electric heating element located in the middle position along the first direction is electrically connected to the electrode on the same side of the electric heating element located above it.

[0019] On the other hand, this application also provides a control method for the aforementioned electric towel rack, comprising:

[0020] Obtain the temperature of the glass body;

[0021] Determine whether there is any abnormality in the heating of the glass body based on the temperature;

[0022] If an abnormality is detected, the heating power will be reduced or the power supply will be stopped for a preset time.

[0023] In one embodiment, the step of determining whether there is an abnormality in the heating of the glass body based on the temperature specifically includes:

[0024] Determine whether the temperature is higher than a first set value;

[0025] If the temperature is higher than the first set value, it is determined that there is an abnormality in the heating of the glass body;

[0026] If the temperature is lower than the first preset value, the heating rate of the glass body is obtained based on the temperature; it is determined whether the heating rate of the glass body is higher than the first preset value. If the heating rate is higher than the first preset value, it is determined that there is an abnormality in the heating of the glass body.

[0027] In one embodiment, the step of controlling the reduction of heating power or stopping power supply for a preset time if an abnormality occurs specifically includes:

[0028] Obtain the level of the anomaly;

[0029] If the level of the abnormality is high, the power supply will be stopped for a preset time; if the level of the abnormality is low, the heating power will be reduced.

[0030] In one embodiment, the step of obtaining the temperature of the glass body specifically includes: obtaining the temperature of both sides of the glass body along the width direction.

[0031] In one embodiment, the step of obtaining the temperature of the glass body specifically includes: obtaining the temperature of both sides of the top edge of the glass body along the width direction, and the distance between the two temperature acquisition positions on the glass body is S, where 8cm≤S≤18cm.

[0032] In one embodiment, before determining whether there is an abnormality in the heating of the glass body based on the temperature, the method further includes: determining whether the temperature sensor is working properly based on the temperature of both sides of the glass body along the width direction.

[0033] When it is determined that the temperature sensor is working normally, the process proceeds to the step of determining whether there is any abnormality in the heating of the glass body based on the temperature.

[0034] The aforementioned electric towel rack and its control method, when powered on, allow both the electric heating element and the compensating heating element to heat the glass body, which in turn heats the towels. Specifically, after the electric heating element is formed on the glass body, the resistance value of the compensating heating element is determined based on its resistance value. The compensating heating element compensates for the resistance, ensuring that the sum of the resistance values ​​of the electric heating element and the compensating heating element is within a preset range. This allows for precise correction of the electric towel rack's own resistance deviation, ensuring the total resistance of the entire machine is within a preset range. This enables locking the rated power of the entire machine, achieving high power uniformity across batches, facilitating mass production, and improving product quality. Attached Figure Description

[0035] Figure 1 This is a structural diagram of an electric towel rack according to an embodiment of this application.

[0036] Figure 2 for Figure 1 The diagram shows another perspective of the electric towel rack.

[0037] Figure 3 This is a flowchart of a control method for an electric towel rack according to an embodiment of this application.

[0038] Figure 4 for Figure 3 The flowchart shows the specific steps involved in controlling the heating of the glass body to determine if there are any abnormalities.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Mounting bracket; 20. Glass body; 30. Electric heating element; 31. Electric heating section; 311. Metal mesh; 312. Electrode; 40. Compensating heating element; 50. Temperature sensor; 60. First frame; 70. Second frame; X, first direction; Y, second direction. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] As mentioned in the background art, electric towel racks in related technologies have problems such as small heating area, large heat loss, low drying efficiency, uneven temperature, and high energy consumption. The reason for these problems is that the spacing between adjacent metal tubes or resistance wires in the electric towel rack is large, and the area between adjacent metal tubes or resistance wires cannot heat the towels.

[0043] Based on this, this application specifically proposes an electric towel rack based on glass surface heating to improve heating uniformity and efficiency. Specifically, an electric heating element is formed in the glass through coating, sintering, and etching processes. When energized, the electric heating element generates heat, thereby heating the towel.

[0044] However, during mass production of electric towel racks based on glass surface heating, fluctuations in the coating, sintering, and etching processes lead to significant variations in the resistance of the heating elements formed within the glass. This results in inconsistent overall power output, poor product consistency, and a low product qualification rate. Furthermore, during use, the top edge of the electric towel rack experiences rapid heat dissipation and weak current distribution, resulting in a lower top temperature (cold edge phenomenon) and poor temperature uniformity across the entire rack.

[0045] For the reasons mentioned above, this application provides an electric towel rack and its control method, which can improve the consistency of product power, facilitate mass production, and provide a technical solution with high product quality.

[0046] See Figure 1 and Figure 2 An embodiment of this application provides an electric towel rack, which includes a mounting frame 10, a glass body 20, an electric heating element 30, and a compensating heating element 40.

[0047] The glass body 20 is mounted on the mounting bracket 10. The mounting bracket 10 is, but is not limited to, being installed on a wall and serving to support and carry the glass body 20. The mounting bracket 10 is, but is not limited to, a metal frame, a plastic part, a wooden frame, etc., and there is no limitation here.

[0048] For example, the glass body 20 may include, but is not limited to, single-layer glass or laminated glass, etc., without limitation. Wherein, the glass body 20 is a single-layer glass sheet, and the glass includes, but is not limited to, ordinary glass or tempered glass. Of course, the glass body 20 may also be composed of at least two layers of glass sheets stacked together. In other words, the glass body 20 is laminated glass. Taking double-laminated glass as an example, the laminated glass includes a first glass sheet, an adhesive layer, and a second glass sheet stacked sequentially. The first glass sheet has a first surface and a second surface arranged opposite to each other, and the second glass sheet has a third surface and a fourth surface arranged opposite to each other, with the second and third surfaces facing each other. The interior of the glass body 20 refers to the area on the glass corresponding to the first and fourth surfaces, specifically, for example, the second surface, the third surface, or the adhesive layer.

[0049] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to 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 application.

[0050] Optionally, the adhesive layer may be made of polyvinyl butyral (PVB), polycarbonate (PC), sound-insulating PVB, light-shielding PVB, heat-controlling PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomers, thermoplastic materials, polybutylene terephthalate (PBT), polyethylene vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyacrylate (PA), polymethyl methacrylate (PMMA), polyurethane (PUR), ionomer interlayer (SGP), and combinations thereof.

[0051] The electric heating element 30 is disposed on the glass body 20. As the main heating element, the electric heating element 30 heats the glass body 20 when energized, thus raising its temperature. A compensating heating element 40 is disposed on the glass body 20 and connected in series with the electric heating element 30. The sum of the resistance values ​​of the electric heating element 30 and the compensating heating element 40 is within a preset range.

[0052] It should be noted that the preset range can be flexibly adjusted and set according to actual needs, and no special restrictions are imposed here. Optionally, the preset range includes, but is not limited to, 400Ω to 500Ω, specifically, 400Ω, 410Ω, 420Ω, 430Ω, 440Ω, 444Ω, 445Ω, 446Ω, 447Ω, 448Ω, 449Ω, 450Ω, 460Ω, 470Ω, 480Ω, 490Ω, or 500Ω, etc.

[0053] In the aforementioned electric towel rack, when powered on, both the electric heating element 30 and the compensating heating element 40 heat the glass body 20, which is used to heat the towels. Specifically, after the electric heating element 30 is formed on the glass body 20, the resistance value of the compensating heating element 40 is determined based on the resistance value of the electric heating element 30. The compensating heating element 40 compensates for the resistance, ensuring that the sum of the resistance values ​​of the electric heating element 30 and the compensating heating element 40 is within a preset range. Therefore, it can accurately correct the resistance deviation of the electric towel rack itself, ensuring that the total resistance of the entire machine is within a preset range. This allows for locking the rated power of the entire machine, achieving a high degree of power uniformity in batches of products, enabling mass production, and improving product quality.

[0054] Furthermore, compared to towel racks using electric heating tubes in related technologies, this one has a simpler overall structure, is easier to assemble, has lower costs, and is more reliable.

[0055] Understandably, when the resistance value of the electric heating element 30 is detected to be greater than the target value, the resistance value of the compensating heating element 40 is reduced accordingly so that the total resistance value is within the preset range; conversely, when the resistance value of the electric heating element 30 is detected to be less than the target value, the resistance value of the compensating heating element 40 is increased accordingly so that the total resistance value is within the preset range.

[0056] According to the resistance law R=ρL / S, the resistance of the compensation heating element 40 can be adjusted by adjusting at least one of its length and width.

[0057] In one specific embodiment, the compensating heating element 40 includes, but is not limited to, a glass fiber heating wire. The resistance compensation method includes: adjusting the length of the glass fiber heating wire according to the resistance value of the electric heating element 30 to change the resistance value of the compensating heating element 40, thereby offsetting the resistance value deviation of the electric heating element 30 and stabilizing the total resistance of the entire machine within a preset range. Since the total resistance of the entire machine is fixed, the power of the entire machine is constant: fixed total resistance → constant power P=U² / R, achieving a high degree of uniformity in power across batches of products.

[0058] Based on the aforementioned embodiment, the compensating heating element 40 is arranged along the top edge of the glass body 20. In this way, the compensating heating element 40 can heat the top edge of the glass body 20, increasing its temperature and effectively solving the problem of a cold edge at the top of the glass body 20, thereby improving the heating uniformity of the towel. Furthermore, since the top edge of the glass body 20 is where the towel is hung, improving the cold edge problem at the top of the glass body 20 can increase the heating efficiency of the towel.

[0059] Optionally, the compensating heating element 40 can extend from one end of the top of the glass body 20 to the other end, so that the entire portion of the top edge of the glass body 20 along the width direction is thermally compensated. Of course, the compensating heating element 40 can also be arranged in a portion of the top edge of the glass body 20, without particular limitation.

[0060] For example, the electric towel rack also includes a temperature sensor 50. The temperature sensor 50 includes, but is not limited to, an NTC sensor. At least two temperature sensors 50 are provided. At least one temperature sensor 50 is arranged on one side of the glass body 20 along its width direction, and at least another temperature sensor 50 is arranged on the other side of the glass body 20 along its width direction. Specifically, at least two temperature sensors 50 are arranged alternately along the top edge of the glass body 20. The signal lines of the temperature sensors 50 are connected to a controller. In this way, the temperature of both opposite sides of the glass body 20 along its width direction can be detected, enabling real-time temperature acquisition and protective control, thereby improving safety.

[0061] When a single temperature sensor 50 is used, and taking its placement at the center of the glass body 20 as an example, the temperature sensor 50 can detect the temperature at the center of the glass body 20. However, in actual use, single-sided, corner, and partial towel stacking are frequent scenarios; the heat in the area covered by the towel cannot dissipate in time, causing the temperature to rise sharply. Industry tests show that the localized temperature of such areas generally reaches 90℃–120℃, far exceeding the safety limit of the glass body 20 (≤85℃), posing risks of material aging, wire breakage, towel carbonization, and even fire. The temperature sensor 50, placed at the center of the glass body 20, has a serious temperature control blind spot and cannot detect side / localized overheating; the industry relies solely on warnings in the instruction manual, lacking effective hardware-level protection, resulting in significant safety hazards.

[0062] Specifically, in this embodiment, two temperature sensors 50 are configured. The two temperature sensors 50 are respectively arranged on opposite sides of the glass body 20 along its width direction. Furthermore, the two temperature sensors 50 are arranged on the top of the glass body 20 and attached to the compensating heating element 40. Thus, the two temperature sensors can monitor the temperature of the compensating heating element 40 area located on the top of the glass body 20 in real time and accurately, eliminating blind spots in localized temperature control and improving safety.

[0063] Based on the aforementioned embodiments, the electric towel rack also includes a controller. The controller is electrically connected to the temperature sensor 50 and is used to control the operation of the electric heating element 30 according to the temperature sensed by the temperature sensor 50. Thus, by controlling and adjusting the operating power, power-on duration, and power-off duration of the electric heating element 30 based on the temperature feedback from the temperature sensor 50, the temperature of the glass body 20 can be accurately controlled within a reasonable threshold. Specifically, for example, the local coverage temperature can be stably controlled at ≤85℃, thereby preventing the glass body 20 from overheating and causing safety hazards.

[0064] Specifically, in implementation, it identifies unilateral / localized overheating in real time and provides dual protection through a combination of static threshold and dynamic temperature rise rate. Specifically, the controller executes dual overheat protection based on the temperature signals collected by the two temperature sensors 50.

[0065] When the static temperature sensed by any temperature sensor 50 is ≥65℃, the power of the electric heating element 30 is reduced; optionally, the power can be reduced by 30% or 50% to suppress the temperature rise.

[0066] When the static temperature sensed by any temperature sensor 50 is ≥70℃, the electric heating element 30 is de-energized; that is, the controller switches the thermal circuit to force power-off protection.

[0067] If any temperature sensor 50 detects a temperature rise exceeding 12°C within 30 seconds, it is determined to be a localized coverage abnormality, causing the electric heating element 30 to reduce its power. This early power reduction intervention, based on the detected localized towel coverage abnormality, prevents the temperature from continuing to rise.

[0068] Protection effect: When a single side of 1 / 3 of the area is covered with a stack of wet towels, the highest temperature in the covered area is ≤85℃, which meets the safety limit requirements.

[0069] For example, there are two temperature sensors 50, and the distance between the two temperature sensors 50 along the width direction of the glass body 20 is S, where 8cm ≤ S ≤ 18cm. S includes, but is not limited to, 8cm, 10cm, 12cm, 13cm, 14cm, 15cm, 16cm, 17cm, or 18cm. Thus, based on the width of the glass body 20 being 25cm to 35cm and the minimum width of the towel being >20cm, when S is set to 8cm ≤ S ≤ 18cm, after the towel is hung on the glass body 20, the towel can contact any one of the temperature sensors 50 and be detected by the temperature sensor 50, thereby eliminating blind spots in monitoring and improving security.

[0070] For example, the electric towel rack also includes a first frame 60, which wraps around the top edge of the glass body 20. The first frame 60 is connected to the mounting bracket 10, and the temperature sensor 50 and the compensating heating element 40 are both disposed within the first frame 60. In this way, the temperature sensor 50 and the compensating heating element 40 can each be shielded by the first frame 60, providing protection and preventing them from being exposed and affecting the aesthetics.

[0071] For example, the electric towel rack also includes a second frame 70. The second frame 70 wraps around the bottom edge of the glass body 20. The glass body 20 is fixed to the mounting bracket 10 on opposite sides along its width.

[0072] The first frame 60 and the second frame 70 are each made of, but are not limited to, metallic or non-metallic materials. In this embodiment, the first frame 60 and the second frame 70 are each, for example, aluminum alloy frames.

[0073] For example, the electric heating element 30 includes a metal mesh 311 disposed on the glass body 20. The mesh of the metal mesh 311 includes, but is not limited to, polygonal or circular or other regular and irregular shapes, and is not limited here. It can be flexibly adjusted and set according to actual needs.

[0074] The visible light transmittance of the metal mesh 311 is TL1. TL1 includes, but is not limited to, 80%, 82%, 83%, 85%, 86%, 88%, 90%, 92%, or 95%, etc., and can be flexibly adjusted and set according to actual needs. Specifically, TL1 ≥ 80%. More specifically, TL1 ≥ 85%. More specifically, TL1 ≥ 90%.

[0075] To ensure that the visible light transmittance TL1 of the metal mesh 311 is ≥80%, the linewidth of the metal mesh 311 is, for example, including but not limited to, 8μm to 20μm, specifically, 8μm, 10μm, 12μm, 15μm, 16μm, 17μm, 18μm, or 20μm. This achieves complete transparency when viewed at close range with the naked eye, providing excellent visual effects while also exhibiting high electrical conductivity and heat dissipation performance. When the linewidth of the metal mesh 311 is less than 8μm, the visible light transmittance TL1 of the metal mesh 311 increases as the linewidth decreases, but the manufacturing difficulty also increases. When the linewidth of the metal mesh 311 is greater than 20μm, the visible light transmittance TL1 of the metal mesh 311 decreases as the linewidth increases, resulting in a visible light transmittance TL1 below 8%, which does not meet the requirements.

[0076] For example, the electric heating element 30 can be disposed on the first, second, third, or fourth surface. Specifically, the electric heating element 30 is disposed on the second or third surface. In this way, the electric heating element 30 is disposed inside the glass body 20, avoiding exposure and potential damage. Furthermore, the adhesive layer completely covers and seals the electric heating element 30 and the wires, forming a safe sandwich structure that provides electrical insulation, prevents leakage, prevents burns, and resists impacts, meeting the bathroom waterproof rating of IPX4 or higher.

[0077] When the electric heating element 30 is powered on, it heats the glass body 20, which is used to heat the towel. Since the electric heating element 30 includes a metal mesh 311, the metal mesh 311 ensures that different parts of the glass body 20 are heated evenly, resulting in a large heating area and relatively high heating uniformity. This improves heating uniformity and drying efficiency while reducing energy consumption. Furthermore, the visible light transmittance TL1 of the metal mesh 311 is high and will not be noticeable, thus not affecting the product's appearance.

[0078] For example, the electric heating element 30 includes multiple electric heating sections 31 connected in series. After the multiple electric heating sections 31 are connected in series, the total resistance of the electric heating element 30 is relatively large, which makes the sum of the resistance value of the electric heating element 30 and the resistance value of the compensating heating element 40 relatively large. As a result, the opposite ends of the electric heating element 30 and the compensating heating element 40 connected in series can be directly connected to household power supplies or public power supplies such as 110V, 220V, and 380V without the need for transformers, thus the structure is simple and the cost is low.

[0079] Optionally, a metal mesh 311 is arranged over 80% of the surface area of ​​the glass body 20. Specifically, a metal mesh 311 is arranged over 85% of the surface area of ​​the glass body 20. More specifically, a metal mesh 311 is arranged over 90% of the surface area of ​​the glass body 20. Further, a metal mesh 311 is arranged over 95% of the surface area of ​​the glass body 20. In this way, the heating area of ​​the surface of the glass body 20 is large, which can achieve uniform heating, and the temperature uniformity is ≤±5℃.

[0080] Because the metal mesh 311 has a small linewidth, in order to ensure that the metal mesh 311 is stably disposed on the glass body 20, grooves are formed on the glass body 20, for example. The grooves are mesh-like, and the shape of the grooves determines the shape of the metal mesh 311. Therefore, the shape of the metal mesh 311 is adjusted accordingly by controlling and adjusting the shape of the grooves. The grooves are formed on the glass body 20, for example, by laser etching, specifically on the first, second, third, or fourth surface of the glass body 20, preferably on the second or third surface, but this is not particularly limited. The grooves have a micron-level structure, and there is no stress residue after processing.

[0081] For example, the metal mesh 311 is filled into the groove. Specifically, the metal mesh 311 can be filled into the groove by scraping metal paste in the range of 0.1µm to 10µm, and then fixed to the glass body 20 by low-temperature baking or high-temperature sintering, forming a continuous conductive path. This constitutes a micron-scale patterned planar heating structure of the metal mesh 311, which can balance the visible light transmittance and conductivity of the material, enabling the visible light transmittance to be greater than 85%, achieving complete transparency when viewed at close range with the naked eye. It provides excellent visual effects while also possessing high conductivity and heating performance. The patterned design allows the heating area to precisely match the actual heating requirements, achieving full contact with the wet towel and reducing ineffective heat loss.

[0082] One end of the compensating heating element 40 is connected to one end of the electric heating element 30, the other end of the compensating heating element 40 is connected to the power supply as an output terminal, and the other end of the electric heating element 30 is connected to the power supply as an input terminal.

[0083] Of course, in other embodiments, the multiple electric heating elements 31 may also be connected in parallel or other ways, and this embodiment does not impose any particular restrictions.

[0084] Based on the aforementioned embodiments, each electric heating element 31 extends along the first direction X of the glass body 20, and all electric heating elements 31 are arranged sequentially along the second direction Y of the glass body 20, with the first direction X and the second direction Y forming an angle. In this way, electric heating elements 31 are arranged over a large area of ​​the glass body 20, and the large area of ​​the glass body 20 is heated by the electric heating elements 31, resulting in good heating uniformity.

[0085] For example, the first direction X is the width direction of the glass body 20, and the second direction Y is the length direction of the glass body 20. Of course, in other embodiments, the first direction X is the length direction of the glass body 20, and the second direction Y is the width direction of the glass body 20.

[0086] Specifically, the electric heating unit 31 includes a metal mesh 311 and two electrodes 312, which are respectively connected to opposite ends of the metal mesh 311 along the first direction X. For any three electric heating units 31 arranged sequentially along the second direction Y, the electrode 312 of the electric heating unit 31 located in the middle position along one side of the first direction X is electrically connected to the electrode 312 of the electric heating unit 31 located below it on the same side, and the electrode 312 of the electric heating unit 31 located in the middle position along the other side of the first direction X is electrically connected to the electrode 312 of the electric heating unit 31 located above it on the same side.

[0087] For example, the electrode 312 can be formed on the glass body 20 by printing, specifically on the first, second, third or fourth surface of the glass body 20. There are no special restrictions here, and it can be flexibly adjusted and set according to actual needs.

[0088] In summary, the electric towel rack of the above embodiments has the following technical effects:

[0089] Multifunctional integration: It simultaneously achieves three core functions: top edge heating, resistance deviation compensation, and local overheat protection. There is no similar combination solution in the industry.

[0090] The product consistency is extremely high: the total resistance is locked within the preset range, the power deviation between batches is minimal, and the requirements for mass production standardization are met.

[0091] Simple structure: a glass fiber filament connected in series with two temperature sensors 50, no complex circuits or calibration equipment required, and easy to assemble;

[0092] Costs are controllable: the price of glass fiber heating wire is low, and the cost of two temperature sensors is also low, so they do not significantly increase the overall cost of the machine.

[0093] Improved temperature uniformity: Completely solves the problem of cold edges at the top of electric heated towel racks, resulting in smaller temperature differences across the entire area and a better heating experience;

[0094] Industry-leading safety level: Two temperature sensors eliminate blind spots in local coverage, providing static and dynamic dual protection, completely solving the common problem of local overheating in the industry at 90℃-120℃, and ensuring stable local coverage temperature ≤85℃.

[0095] Highly adaptable: It is compatible with AC220V direct drive, requiring no additional drive circuit. The system is reliable and compatible with existing glass production lines and installation structures.

[0096] Please see Figure 3 In some embodiments, this application also provides a control method for an electric towel rack employing any of the above embodiments, comprising:

[0097] Step S100: Obtain the temperature of the glass body;

[0098] In step S100, the temperature of the glass body is detected by a temperature sensor. The specific sensing position of the temperature sensor can be flexibly adjusted and set according to actual needs, and there are no restrictions here.

[0099] Step S200: Determine whether there is any abnormality in the heating of the glass body based on the temperature;

[0100] Step S300: If an abnormality is found, control to reduce the heating power or stop the power supply for a preset time.

[0101] The above-mentioned control method, while heating the glass body, also obtains the temperature of the glass body and judges whether there is any abnormality in the heating. When an abnormality is found, it controls the reduction of heating power and stops the power supply for a preset time so that the temperature of the glass body is at a reasonable threshold, thereby preventing the glass body temperature from being too high and causing safety hazards.

[0102] Based on the foregoing embodiments, step S200 may specifically include:

[0103] Please see Figure 4 Step S210: Determine whether the temperature is higher than the first set value;

[0104] The first set value includes, but is not limited to, 65℃, 66℃, 67℃, 68℃, 69℃, 70℃, 71℃, 72℃, 73℃, 74℃, 75℃, etc. The specific value can be flexibly adjusted and set according to actual needs, and there are no restrictions here.

[0105] Step S220: If the temperature is higher than the first set value, it is determined that there is an abnormality in the heating of the glass body;

[0106] Step S230: If the temperature is lower than the first set value, the heating rate of the glass body is obtained based on the temperature.

[0107] Step S240: Determine whether the heating rate of the glass body is higher than the first preset value;

[0108] Step S250: If the heating rate is lower than the first preset value, it is determined that the heating of the glass body is normal.

[0109] In step S250, the first preset value includes, but is not limited to, a temperature increase of 12°C every 30 seconds or a temperature increase of 10°C every 30 seconds. The temperature increase is usually measured in half a minute, but the specific value can be adjusted and set according to actual needs, and no special restrictions are imposed here.

[0110] If the heating rate is higher than the first preset value, proceed to step S220.

[0111] Based on the foregoing embodiments, step S300 includes:

[0112] Step S310: Obtain the exception level;

[0113] In step S310, if the temperature is higher than the second set value or the heating rate is higher than the second preset value, the level of the anomaly is higher; if the temperature is lower than the second set value and the heating rate is lower than the second preset value, the level of the anomaly is lower.

[0114] The second setting value is higher than the first setting value, and the second preset value is higher than the first preset value. The specific values ​​of the second setting value and the second preset value can be flexibly adjusted and set according to actual needs, and are not restricted here.

[0115] Step S320: If the level of the abnormality is high, control the power supply to stop for a preset time;

[0116] In step S320, the preset time can be 1 minute, 2 minutes, 3 minutes, 5 minutes, 6 minutes, 10 minutes, or 2 to 3 minutes, or 1 to 6 minutes, etc. There are no special restrictions here, and it can be flexibly adjusted and set according to actual needs.

[0117] Step S330: If the level of the abnormality is low, control the reduction of heating power.

[0118] In step S330, the reduction in heating power can be 10%, 20%, 30%, 40%, 50%, 60%, or 10% to 50%, or 20% to 40%, etc. There are no special restrictions here, and it can be flexibly adjusted and set according to actual needs.

[0119] In this way, the heating process can be controlled in a targeted manner according to the level of the anomaly, so that the temperature of the glass body can be controlled more precisely and safety hazards can be effectively prevented.

[0120] In some embodiments, before determining whether there is an abnormality in the heating of the glass body based on the temperature, the method further includes step S110: determining whether the temperature sensor is working properly based on the temperature of both sides of the glass body along the width direction.

[0121] When it is determined that the temperature sensor is working normally, the process proceeds to step S200; when it is determined that the temperature sensor is not working normally, the electric towel rack stops working.

[0122] Specifically, if the temperature difference between the two sides of the glass body along the width direction exceeds the third set value, or the temperature on either side exceeds the fourth set value, or the temperature on either side is lower than the fifth set value, or the temperature rise rate on either side exceeds the third preset value, then the temperature sensor is determined to be malfunctioning; otherwise, the electric towel rack is determined to be malfunctioning.

[0123] The third setting is used only to measure the temperature difference between the two sides of the glass body along its width. The specific value can be flexibly adjusted and set according to actual needs, and no particular restrictions are imposed here. When the temperature difference between the two sides of the glass body along its width exceeds the third setting, it indicates that at least one temperature sensor is malfunctioning.

[0124] The fourth setting value is greater than the second setting value and can be flexibly adjusted and set according to actual needs without special restrictions. When the temperature on any side of the glass body along the width direction is greater than the fourth setting value, the temperature sensor will detect a larger temperature, which may result in a larger error, indicating an anomaly.

[0125] The fifth setting, for example, uses ambient temperature as a reference. The specific setting is not limited here; it can be flexibly adjusted and set according to actual needs. When the temperature on any side of the glass body along its width is lower than the fifth setting, the temperature sensor will detect a lower temperature, indicating a clear anomaly.

[0126] The third preset value is used to measure the rate of temperature rise on any side of the glass body along the width direction. The specific value can be flexibly adjusted and set according to actual needs, and there are no special restrictions here. When the rate of temperature rise on any side of the glass body along the width direction is higher than the third preset value, the rate of temperature rise sensed by the temperature sensor is larger, which may result in a large error, i.e., an anomaly.

[0127] This demonstrates that it can effectively prevent false detections caused by malfunctions in the temperature sensor, thereby improving detection accuracy.

[0128] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0129] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0130] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0131] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0132] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0133] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0134] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electric towel rack, characterized in that, include: Mounting rack; A glass body, wherein the glass body is mounted on the mounting bracket; An electric heating element is disposed on the glass body; and A compensating heating element is disposed on the glass body. The compensating heating element is connected in series with the electric heating element, and the sum of the resistance values ​​of the electric heating element and the compensating heating element is within a preset range.

2. The electric towel rack according to claim 1, characterized in that, The compensating heating element includes a glass fiber heating wire; and / or, the compensating heating element is arranged along the top edge of the glass body.

3. The electric towel rack according to claim 1, characterized in that, The electric towel rack also includes temperature sensors, wherein at least two temperature sensors are provided, at least one of the temperature sensors is arranged on one side of the glass body along its own width direction, and at least another temperature sensor is arranged on the other side of the glass body along its own width direction.

4. The electric towel rack according to claim 3, characterized in that, The electric towel rack also includes a controller, which is electrically connected to the temperature sensor. The controller is used to control the operation of the electric heating element according to the temperature sensed by the temperature sensor.

5. The electric towel rack according to claim 3, characterized in that, The temperature sensor is attached to the compensating heating element, and at least two of the temperature sensors are arranged sequentially at intervals along the top edge of the glass body.

6. The electric towel rack according to claim 5, characterized in that, There are two temperature sensors, and the distance between the two temperature sensors along the width direction of the glass body is S, where 8cm≤S≤18cm.

7. The electric towel rack according to claim 3, characterized in that, The electric towel rack also includes a first frame, which wraps around the top edge of the glass body. The first frame is connected to the mounting bracket, and the temperature sensor and the compensating heating element are both disposed within the first frame.

8. The electric towel rack according to claim 1, characterized in that, The electric heating element includes a metal mesh disposed on the glass body, and the visible light transmittance of the metal mesh is TL1, where TL1 ≥ 80%, ≥ 85%, or ≥ 90%.

9. The electric towel rack according to claim 1, characterized in that, The electric heating element includes multiple electric heating parts connected in series. Each electric heating part extends along a first direction of the glass body, and all the electric heating parts are arranged sequentially along a second direction of the glass body. The first direction and the second direction are arranged at an angle.

10. The electric towel rack according to claim 9, characterized in that, The electric heating element includes a metal mesh and two electrodes, which are respectively connected to opposite ends of the metal mesh along the first direction. For any three electric heating elements arranged sequentially along the second direction, the electrode on one side of the electric heating element located in the middle position along the first direction is electrically connected to the electrode on the same side of the electric heating element located below it, and the electrode on the other side of the electric heating element located in the middle position along the first direction is electrically connected to the electrode on the same side of the electric heating element located above it.

11. A control method for an electric towel rack as described in any one of claims 1 to 10, characterized in that, include: Obtain the temperature of the glass body; Determine whether there is any abnormality in the heating of the glass body based on the temperature; If an abnormality is detected, the heating power will be reduced or the power supply will be stopped for a preset time.

12. The control method according to claim 11, characterized in that, The specific steps for determining whether there is an abnormality in the heating of the glass body based on the temperature include: Determine whether the temperature is higher than a first set value; If the temperature is higher than the first set value, it is determined that there is an abnormality in the heating of the glass body; If the temperature is lower than the first preset value, the heating rate of the glass body is obtained based on the temperature; it is determined whether the heating rate of the glass body is higher than the first preset value. If the heating rate is higher than the first preset value, it is determined that there is an abnormality in the heating of the glass body.

13. The control method according to claim 11, characterized in that, The specific steps for controlling the reduction of heating power or stopping power supply for a preset time if an abnormality occurs include: Obtain the level of the anomaly; If the level of the abnormality is high, the power supply will be stopped for a preset time; if the level of the abnormality is low, the heating power will be reduced.

14. The control method according to claim 11, characterized in that, The step of obtaining the temperature of the glass body specifically includes: obtaining the temperature of both sides of the glass body along the width direction.

15. The control method according to claim 14, characterized in that, The step of obtaining the temperature of the glass body specifically includes: obtaining the temperature of both sides of the top edge of the glass body along the width direction, and the distance between the two temperature acquisition positions on the glass body is S, where 8cm≤S≤18cm.

16. The control method according to claim 14, characterized in that, Before determining whether there is an abnormality in the heating of the glass body based on the temperature, the method further includes: determining whether the temperature sensor is working properly based on the temperature of both sides of the glass body along the width direction. When it is determined that the temperature sensor is working normally, the process proceeds to the step of determining whether there is any abnormality in the heating of the glass body based on the temperature.

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