Anti-freezing and anti-blocking special-shaped drainage device
By incorporating a built-in heating plate and heating element in the irregularly shaped drain outlet, combined with a temperature sensor and self-temperature control module, the problem of icing and clogging of roof drainage devices in low-temperature environments is solved, achieving convenient installation and energy-saving anti-freezing effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-03
AI Technical Summary
Existing roof drainage systems are prone to freezing and clogging in low-temperature environments, leading to backflow of water and structural damage. Existing antifreeze measures also suffer from problems such as complex installation, high energy consumption, poor safety, and environmental pollution.
Featuring a uniquely shaped drain outlet design, an internal heating plate and heating element, combined with a temperature sensor and self-temperature control module, it is easy to install via a magnetic block, achieving precise heating and antifreeze. The silicone rubber heating element is flexibly fitted, with an internal heating wire and waterproof insulation layer. The self-temperature control module automatically adjusts the temperature to prevent freezing and blockage.
It effectively prevents icing and blockage in low-temperature environments, is easy to install and disassemble, safe and reliable, energy-efficient, avoids the defects of traditional solutions, and improves the practicality and safety of the device.
Smart Images

Figure CN224078535U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roof drainage technology, specifically to a non-freezing and non-clogging irregular-shaped drainage device. Background Technology
[0002] Roof drainage refers to the effective guidance and discharge of rainwater or snowmelt from the roof through a properly designed and installed drainage system, preventing water accumulation from damaging the building structure. A roof drainage system typically includes a slope, gutters, downpipes, and drain outlets. The roof design must have a certain slope to allow water to flow naturally to lower areas. Secondly, gutters are installed at the roof edges to collect rainwater. Next, downpipes vertically guide the water from the gutters to the ground or underground drainage system. Finally, drain outlets connect to the municipal drainage network or rainwater harvesting system to ensure smooth drainage. Roof drainage systems also require regular cleaning to prevent leaves and debris from clogging the pipes. Good roof drainage not only protects the building structure but also prevents leaks, mold growth, and other problems, extending the building's lifespan.
[0003] Conventional U-shaped drain outlets (such as roof gutters and balcony floor drains) have low slopes and are prone to freezing and blockage in low-temperature environments, leading to backflow of water, failure of waterproof membranes due to prolonged soaking, and structural damage. Existing solutions have the following drawbacks: electric heating tape is complex to install, has uneven heat conduction, and is prone to aging and breakage; external heating elements occupy a lot of space, obstruct water flow, and are prone to corrosion; manual de-icing is inefficient, dangerous, and has a high risk factor; hanging ice to remove detached ice has a high risk factor, and failure to remove it in time can easily lead to personal injury and equipment damage; and chemical de-icing agents pollute the environment, corrode pipes, and reduce the practicality of the device.
[0004] Therefore, a compact, antifreeze-equipped, low-energy-consumption, and highly adaptable irregular-shaped drain outlet is a problem that urgently needs to be solved. Utility Model Content
[0005] The purpose of this utility model is to provide a non-freezing and non-clogging irregular-shaped drainage device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a freeze-proof and clog-proof irregular-shaped drainage device, comprising an irregular-shaped drain body, and further comprising:
[0007] A U-shaped drain outlet is formed on the inner wall of the irregularly shaped drain outlet body, which is configured as a U-shaped structure.
[0008] A heating plate is installed on the outer wall of a U-shaped drain outlet and fits seamlessly with the outer wall of the U-shaped drain outlet. The heating plate has a heating element inside, and the heating element has a magnetic block inside, with multiple sets of magnetic blocks. The heating element has a heating wire inside, and the heating wire has a waterproof insulating layer on the outside.
[0009] Temperature sensor is located on the outside of the irregularly shaped drain outlet body;
[0010] The self-temperature control module is located between the heating element and the waterproof insulation layer, and is electrically connected to the temperature sensor and the heating wire respectively.
[0011] Preferably, both sides of the irregularly shaped drain outlet body are fixed with wing plates, and the wing plates are made of steel plates or iron plates.
[0012] Preferably, a fixing base is fixed on one side of the irregularly shaped drain body, and the top of the fixing base is fixedly connected to the temperature sensor.
[0013] Preferably, a fixing rod is fixed to one side of the irregularly shaped drain body, and an inclined baffle is fixed to one end of the fixing rod.
[0014] Preferably, the heating element is a silicone rubber heating element, and it is flexibly fitted to the inner wall of the U-shaped drain outlet.
[0015] Preferably, the irregularly shaped drain body has an inlet end and an outlet end on both sides, and the overall downward folding angle of the irregularly shaped drain body is 30°.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model achieves convenient magnetic fixation between the heating element and the irregularly shaped drain outlet body through the magnetic block design, making installation and disassembly more flexible. Furthermore, by combining the silicone heating plate with intelligent temperature control and leakage protection devices, it achieves precise heating, energy saving, and safe operation, solving the problems of low efficiency, difficult maintenance, and poor safety performance of traditional solutions. Attached Figure Description
[0018] Figure 1 A schematic diagram of a preferred embodiment of the antifreeze and anti-clogging irregular-shaped drainage device provided by this utility model;
[0019] Figure 2 A schematic diagram of the irregular-shaped drain outlet body and baffle structure provided by this utility model;
[0020] Figure 3 A schematic diagram of the heating element and waterproof insulation layer structure provided by this utility model;
[0021] Figure 4A schematic diagram of the magnetic block and heating wire structure provided by this utility model.
[0022] In the diagram: 1. Irregularly shaped drain body; 2. U-shaped drain outlet; 3. Magnetic block; 4. Heating element; 5. Waterproof insulation layer; 6. Heating plate; 7. Self-temperature control module; 8. Heating wire; 9. Wing plate; 10. Fixing base; 11. Temperature sensor; 12. Fixing rod; 13. Baffle; 14. Water inlet; 15. Water outlet. Detailed Implementation
[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0024] Please see Figure 1-4 As shown, an anti-freezing and anti-clogging irregular-shaped drainage device includes an irregular-shaped drain body 1 and a U-shaped drain outlet 2, which is opened on the inner wall of the irregular-shaped drain body 1. The irregular-shaped drain body 1 is configured as a U-shaped structure. By opening the U-shaped drain outlet 2 inside the irregular-shaped drain body 1, the accumulated water on the roof can be easily drained.
[0025] Heating plate 6 is installed on the outer wall of U-shaped drain outlet 2 and fits seamlessly with it. Heating element 4 is installed inside heating element 4, and magnetic blocks 3 are installed inside heating element 4. Multiple sets of magnetic blocks 3 are provided. Heating wire 8 is installed inside heating element 4, and a waterproof insulation layer 5 is installed on the outside of heating wire 8. When assembling the irregular drain outlet body 1, a steel plate or iron plate is removed and folded into a U-shape. A steel plate or iron plate is welded to the inlet end 14 to form a wing plate 9. The irregular drain outlet body 1 is folded down at a 30° angle. The silicone heating plate 6 is attached to the outer wall of the U-shaped outlet pipe and fixed by magnetic blocks 3. The outer ring of the steel plate or iron plate covers it. The outer ring plate and the inner ring plate are connected at the inlet... Welded seal at water inlet 14, baffle 13 with an angle greater than 30° is installed at water outlet 15. The overall irregular drainage device needs to be filled with cement mortar or concrete into the parapet wall of the roof. The wing plate 9 at water inlet 14 is sealed with waterproof membrane at the contact point with the wall. It should be noted that magnetic block 3 can be set as magnetic buckle. Heating plate 4 is set. Heating plate 4 is a flexible fit design that perfectly matches the curvature of the outer wall of U-shaped water outlet 2. The surface is smooth and does not obstruct water flow. The built-in heating wire 8 uses etched foil or resistance wire as the winding circuit. It is uniformly vulcanized between two layers of silicone rubber. The waterproof insulation layer 5 is covered with high temperature resistant silicone with a temperature resistance of -40℃ to 200℃ and a protection level of IP68.
[0026] Temperature sensor 11 is located on the outside of the irregularly shaped drain body 1. It should be noted that temperature sensor 11 can use a thermistor or thermocouple as the temperature sensing element. It changes its resistance or voltage signal by sensing changes in ambient temperature. Thermistor type sensors utilize the characteristic that the resistance of materials changes with temperature (such as the NTC resistance decreasing as the temperature rises), while thermocouples are based on the Seebeck effect and generate a voltage signal through the temperature difference between two different metal junctions. Their operating temperature range is usually -50℃ to 150℃, with an accuracy of ±0.5℃, fast response time, and the output signal can be transmitted through analog or digital interfaces. This is existing technology.
[0027] The self-temperature regulating module 7 is located between the heating element 4 and the waterproof insulation layer 5. The self-temperature regulating module 7 is electrically connected to the temperature sensor 11 and the heating wire 8. The heating element 4 facilitates the fixation of the self-temperature regulating module 7. The self-temperature regulating module 7 is a conventional self-temperature regulating module, containing an internal power interface supporting 220V AC mains power, solar power, or lithium battery power. A safety protection unit integrates overcurrent protection and leakage protection. The self-temperature regulating module achieves automatic temperature adjustment through a built-in temperature detector and intelligent control circuit. When the temperature is lower than the set value, the module powers on to heat; after reaching the set temperature, it automatically powers off to stop heating, ensuring a constant temperature. Multiple sets of heating wires 8 are fixed to the top of the self-temperature regulating module 7, facilitating uniform heating of the heating wires 8. Heat ensures uniform heating of the waterproof insulation layer 5. The heating wire 8 uses a resistance wire as its winding circuit. The heating wire 8 employs either etched foil or resistance wire as its winding circuit. By applying current, it generates Joule heating, converting electrical energy into heat energy. The etched foil exhibits uniform heating characteristics, a current technology, while the resistance wire possesses high temperature resistance and stability. During operation, the self-regulating temperature module 7 adjusts the current to control the heating temperature. The typical operating voltage is 220V, the power range is 20-100W / m, and the temperature adjustable range is 0-100℃. This design ensures that the heating wire 8 efficiently and uniformly heats the irregularly shaped drain outlet body 1, preventing freezing and blockage. It should be noted that the self-regulating temperature module 7 and the leakage and overcurrent protection devices are installed in the on-site distribution box. Its operating process includes:
[0028] Automatic mode: Temperature ≤ 0℃ → Heating starts, power increases linearly as temperature decreases;
[0029] Temperature ≥ 3℃ → Stop heating;
[0030] Manual mode: Force start / stop via physical button or mobile app;
[0031] Safety protection: Automatic power-off and alarm when current exceeds limit or temperature exceeds 60℃.
[0032] Both sides of the irregular-shaped drain body 1 are fixed with wing plates 9, which are made of steel or iron plates and are used to support the entire irregular-shaped drain body 1. A fixing seat 10 is fixed on one side of the irregular-shaped drain body 1. The top of the fixing seat 10 is fixedly connected to the temperature sensor 11. By setting the fixing seat 10, the temperature sensor 11 can be easily installed, which improves the stability of the temperature sensor 11. A fixing rod 12 is fixed on one side of the irregular-shaped drain body 1. One end of the fixing rod 12 is fixed with an inclined baffle 13, and the installation angle of the baffle 13 is greater than 30° to facilitate the drainage of accumulated water. The heating element 4 is a silicone rubber heating element and is flexibly attached to the inner wall of the U-shaped drain 2. The two sides of the irregular-shaped drain body 1 are respectively provided with an inlet end 14 and an outlet end 15. The overall downward folding angle of the irregular-shaped drain body 1 is 30°.
[0033] Working principle: When there is water accumulation on the roof, this device can draw the water into the irregularly shaped drain body 1, allowing the self-regulating temperature module 7 to evenly heat the heating wire 8, which in turn allows the heating plate 6 to evenly heat the water inside the irregularly shaped drain body 1. The water then flows out to the tail end of the irregularly shaped drain body 1, ensuring that the irregularly shaped drain body 1 is evenly heated in low-temperature environments and effectively preventing freezing and blockage. The magnetic design of the magnetic block 3 enables convenient magnetic fixation between the heating plate 6 and the irregularly shaped drain body 1, making installation and disassembly more flexible. The design of the wing plates 9 on both sides of the irregularly shaped drain body 1 facilitates the use of supporting this device, and the design of the temperature sensor 11 facilitates the monitoring of the temperature of the water inside the irregularly shaped drain body 1.
[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A de-icing and anti-clogging special-shaped drainage device, comprising a special-shaped downspout body (1), characterized in that, Also include: U-shaped water inlet (2) is opened in the inner wall of the special-shaped downspout body (1), the special-shaped downspout body (1) is arranged as U-shaped structure; Heating plate (6) is installed on the outer wall of U-shaped water inlet (2) and is seamlessly attached to the outer wall of U-shaped water inlet (2), the inside of the heating plate (6) is provided with heating sheet (4), the inside of the heating sheet (4) is provided with magnetic block (3), and the magnetic block (3) is provided with multiple groups, the inside of the heating sheet (4) is provided with electric heating wire (8), the outside of the electric heating wire (8) is provided with waterproof insulation layer (5); Temperature sensor (11) is arranged on the outside of the special-shaped downspout body (1); Self-control temperature module (7) is arranged between heating sheet (4) and waterproof insulation layer (5), the self-control temperature module (7) is electrically connected with temperature sensor (11) and electric heating wire (8) respectively.
2. The anti-freezing and anti-blocking special-shaped drainage device according to claim 1, characterized in that: The both sides of the special-shaped downspout body (1) are fixed with wing plate (9), and the material of wing plate (9) is steel plate or iron plate.
3. The anti-freezing and anti-blocking special-shaped drainage device according to claim 1, characterized in that: One side of the special-shaped downspout body (1) is fixed with fixed seat (10), and the top of fixed seat (10) is fixedly connected with temperature sensor (11).
4. The anti-freezing and anti-blocking special-shaped drainage device according to claim 1, characterized in that: One side of the special-shaped downspout body (1) is fixed with fixed rod (12), one end of fixed rod (12) is fixedly connected with inclined baffle (13).
5. The anti-freezing and anti-blocking special-shaped drainage device according to claim 1, characterized in that: The heating sheet (4) is arranged as silicon rubber heating sheet, and is flexibly attached to the inner wall of U-shaped water inlet (2).
6. The anti-freezing and anti-blocking special-shaped drainage device according to claim 1, characterized in that: The both sides of the special-shaped downspout body (1) are respectively provided with water inlet end (14) and water outlet end (15), and the overall downward folding angle of the special-shaped downspout body (1) is 30°.