Electric heating control box for asphalt heat preservation box
By using a ring heating wire and temperature sensor combined with a heat dissipation component in the asphalt insulation box, the problems of inaccurate temperature control and safety hazards of traditional gas heating methods are solved, achieving uniform heating and low-energy-consumption electric heating effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YINLI MASCH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional gas heating methods for asphalt heating suffer from problems such as inaccurate temperature control, uneven heating, high energy consumption, and safety hazards.
The heating element is evenly distributed in a ring on the inner wall of the insulated box. Combined with a temperature sensor and control panel, it achieves precise temperature control. Excess heat is removed by a heat dissipation component. The multi-layer insulation structure reduces heat loss. An electric heating system is used to reduce energy consumption and safety risks.
It achieves uniform heating and precise temperature control of asphalt, reduces energy consumption, improves safety, and avoids the risk of gas leakage during heating.
Smart Images

Figure CN224366360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of asphalt insulation boxes, specifically to an external electric heating control box for asphalt insulation boxes. Background Technology
[0002] Asphalt is a high-viscosity substance whose fluidity is significantly affected by temperature. At room temperature, asphalt has a high viscosity and is difficult to flow. Therefore, it needs to be heated to reduce its viscosity for easier transportation and use. The properties of asphalt are very sensitive to temperature. If the temperature is too high, asphalt may age or decompose. If the temperature is too low, asphalt will solidify, affecting its normal use. Therefore, precise temperature control is required.
[0003] Traditional direct heating methods, such as gas heating, can provide heat, but they suffer from problems such as inaccurate temperature control, uneven heating, and complex operation. Direct heating methods are usually energy-intensive and have a certain impact on the environment. At the same time, gas heating poses a risk of leakage, which may lead to safety accidents such as fire or explosion. Therefore, an external electric heating control box for asphalt insulation boxes is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an external electric heating control box for asphalt insulation boxes, which has the advantages of uniform heating, rapid conversion of electrical energy into heat energy, and low energy consumption, thus solving the problems mentioned in the background technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An external electric heating control box for asphalt insulation boxes includes an insulation box body and a heating control box body. A base is fixed on the lower surface of the insulation box body, and a box cover is placed on the upper surface of the insulation box body. Several annular heating wires are embedded and fixed inside the inner peripheral wall of the insulation box body, and temperature sensors are embedded and fixed inside the left and right side walls of the inner cavity of the insulation box body.
[0007] The heating control box is fixed to the left side of the insulation box by bolts. The upper surface of the heating control box is provided with a heat dissipation component. Mounting plates are fixed on both the upper and lower sides of the right side wall of the inner cavity of the heating control box. A control panel is fixed on the left side of the mounting plates on the upper and lower sides.
[0008] The heat dissipation assembly includes a fan fixed to the upper surface of the heating control box. An air outlet plate is fixed to the right side wall of the inner cavity of the heating control box. The air outlet of the fan passes through the heating control box through a pipe and communicates with the upper surface of the air outlet plate. A filter cylinder is fixed to the left side of the upper surface of the heating control box. Mounting blocks are fixed to the top and bottom walls of the inner cavity of the filter cylinder. A first filter screen is fixed to the left side of the mounting blocks on both the upper and lower sides by bolts. The air inlet of the fan is connected to the right side of the filter cylinder through a pipe.
[0009] Furthermore, the air outlet plate includes a rectangular hollow plate, and a plurality of air outlets are connected to the left side of the rectangular hollow plate.
[0010] Furthermore, an air outlet is provided through the lower surface of the filter cylinder, and a second filter screen is fixed inside the air outlet.
[0011] Furthermore, the insulated box includes an inner frame, an insulated frame is fixed to the outside of the inner frame, and an outer frame is fixed to the outside of the insulated frame.
[0012] Furthermore, a door is rotatably connected to the left side of the heating control box via a hinge.
[0013] Furthermore, the outer diameter of the first filter screen is matched with the inner diameter of the filter cylinder.
[0014] Furthermore, each of the control panels is connected to several ring-shaped heating wires via wires.
[0015] Furthermore, the control panels are all connected via temperature sensor wires on the left and right sides of the control panel.
[0016] Compared with the prior art, this utility model provides an external electric heating control box for asphalt insulation boxes, which has the following advantages:
[0017] This asphalt insulation box features an external electric heating control box. Ring-shaped heating wires are evenly distributed along the inner wall of the box, enabling rapid and uniform heating of the asphalt, thus improving heating efficiency. Temperature sensors monitor the temperature in real time, and the control panel automatically controls the heating process based on set values, ensuring precise temperature control and preventing the asphalt from aging due to excessive heat or solidifying due to excessive cold. A heat dissipation component effectively removes heat from the heating control box, ensuring stable operation of electronic components. The insulation box employs a multi-layered structure design with an inner frame, insulation frame, and outer frame, effectively reducing heat loss and improving insulation performance. It can quickly convert electrical energy into heat energy with low energy consumption. The electric heating system is relatively safe, eliminating the risk of gas leaks. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a top view of the insulated box body and lid of this utility model;
[0020] Figure 3 This is a schematic diagram of the heat dissipation component of this utility model.
[0021] In the diagram: 1 Insulation box, 2 Heating control box, 3 Base, 4 Box cover, 5 Ring heating wire, 6 Temperature sensor, 7 Heat dissipation assembly, 701 Fan, 702 Air outlet plate, 703 Filter cartridge, 704 Mounting block, 705 First filter screen, 8 Mounting plate, 9 Control panel. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1 to 2 In this embodiment, the external electric heating control box for the asphalt insulation box includes an insulation box body 1 and a heating control box body 2. A base 3 is fixed on the lower surface of the insulation box body 1, and a box cover 4 is placed on the upper surface of the insulation box body 1. Several annular heating wires 5 are embedded and fixed inside the inner peripheral wall of the insulation box body 1. Temperature sensors 6 are embedded and fixed inside the left and right side walls of the inner cavity of the insulation box body 1. A handle is fixed on the upper surface of the box cover 4.
[0024] In this embodiment, the heating control box 2 is fixed to the left side of the heat preservation box 1 by bolts. The upper surface of the heating control box 2 is provided with a heat dissipation component 7. Mounting plates 8 are fixed on both the upper and lower sides of the right side wall of the inner cavity of the heating control box 2. A control panel 9 is fixed on the left side of the upper and lower mounting plates 8. The main controller is installed inside the control panel 9.
[0025] Specifically, the insulated box 1 includes an inner frame, an insulated frame fixed to the outside of the inner frame, and an outer frame fixed to the outside of the insulated frame. The left side of the heating control box 2 is connected to a door via a hinge. The door is fixed to the left side of the heating control box 2 by a locking mechanism. The control panel 9 is connected to several ring heating wires 5 via wires. The control panel 9 is connected to temperature sensors 6 on both sides of the wires. The insulated frame is a polyurethane foam frame, and both the inner and outer frames are stainless steel frames.
[0026] Please see Figure 3In this embodiment, the heat dissipation component 7 includes a fan 701 fixed to the upper surface of the heating control box 2. An air outlet plate 702 is fixed to the right side wall of the inner cavity of the heating control box 2. The air outlet end of the fan 701 passes through the heating control box 2 through a pipe and communicates with the upper surface of the air outlet plate 702. A filter cylinder 703 is fixed to the left side of the upper surface of the heating control box 2. Mounting blocks 704 are fixed to the top and bottom walls of the inner cavity of the filter cylinder 703. A first filter screen 705 is fixed to the left side of the mounting blocks 704 on both the upper and lower sides by bolts. The air inlet end of the fan 701 is connected to the right side of the filter cylinder 703 through a pipe. The annular heating wire 5 is evenly distributed on the inner circumferential wall of the heat insulation box 1, which can quickly and evenly heat the asphalt and improve the heating efficiency. A leakage protection device can be installed in the heating control box 2. The leakage protection device is existing technology and further improves safety.
[0027] Specifically, the air outlet plate 702 includes a rectangular hollow plate, with several air outlets connected to the left side of the rectangular hollow plate. An air outlet hole is opened through the lower surface of the filter cylinder 703, and a second filter screen is fixed inside the air outlet hole. The outer diameter of the first filter screen 705 is matched with the inner diameter of the filter cylinder 703, which can quickly convert electrical energy into heat energy with low energy consumption. The electric heating system is relatively safe and there is no risk of gas leakage.
[0028] Specifically, several annular heating wires 5 are embedded and fixed in the inner peripheral wall of the insulation box 1. These annular heating wires 5 are powered by the control panel 9 to generate heat and heat the asphalt inside the insulation box. Temperature sensors 6 are embedded and fixed in the left and right side walls of the inner cavity of the insulation box 1 to monitor the temperature inside the insulation box in real time and feed the temperature signal back to the control panel 9. The control panel 9 automatically controls the start and stop of the annular heating wires 5 according to the set temperature value and the signal fed back by the temperature sensor 6 to ensure that the temperature inside the insulation box is maintained within the set range.
[0029] It should be noted that the upper surface of the heating control box 2 is provided with a heat dissipation component 7, including a fan 701, an air outlet plate 702, and a filter cartridge 703. The fan 701 draws air from the filter cartridge 703 through a pipe, and after being filtered by the first filter screen 705, the cold air is sent into the heating control box 2. Several air outlets are connected to the left side of the air outlet plate 702, which blows the cold air evenly to the electronic components inside the heating control box 2, removes heat, and ensures that the temperature inside the control box is stable. The insulation box 1 includes an inner frame, an insulation frame, and an outer frame. This multi-layer structure design can effectively reduce heat loss and improve the insulation effect. The upper surface of the insulation box 1 is covered with a box cover 4, and the lower surface is fixed with a base 3 to ensure the stability and sealing of the insulation box.
[0030] The working principle of the above embodiments is as follows:
[0031] In use, several annular heating wires 5 are embedded and fixed in the inner circumferential wall of the insulation box 1. These annular heating wires 5 are powered by the control panel 9 and generate heat to heat the asphalt inside the insulation box. Temperature sensors 6 are embedded and fixed in the left and right side walls of the inner cavity of the insulation box 1 to monitor the temperature inside the insulation box in real time and feed the temperature signal back to the control panel 9. The control panel 9 automatically controls the start and stop of the annular heating wires 5 according to the set temperature value and the signal fed back by the temperature sensors 6 to ensure that the temperature inside the insulation box is maintained within the set range. The upper surface of the heating control box 2 is equipped with a heat dissipation component 7, including a fan 701 and an air outlet plate. 702 and filter cartridge 703, fan 701 draws air from filter cartridge 703 through pipe, after being filtered by first filter screen 705, cold air is sent into heating control box 2. Several air outlets are connected to the left side of air outlet plate 702, blowing cold air evenly onto the electronic components in heating control box 2, carrying away heat and ensuring stable temperature in control box. Insulation box 1 includes inner frame, insulation frame and outer frame. This multi-layer structure design can effectively reduce heat loss and improve insulation effect. Box cover 4 is placed on the upper surface of insulation box 1, and base 3 is fixed on the lower surface to ensure the stability and sealing of insulation box.
[0032] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are 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.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An external electric heating control box for an asphalt insulation box, comprising an insulation box body (1) and a heating control box body (2), characterized in that: The lower surface of the heat preservation box (1) is fixed with a base (3), the upper surface of the heat preservation box (1) is covered with a box cover (4), a number of annular heating wires (5) are embedded and fixed inside the inner wall of the heat preservation box (1), and temperature sensors (6) are embedded and fixed inside the left and right side walls of the inner cavity of the heat preservation box (1). The heating control box (2) is fixed to the left side of the heat preservation box (1) by bolts. The upper surface of the heating control box (2) is provided with a heat dissipation component (7). The upper and lower sides of the right side wall of the inner cavity of the heating control box (2) are fixed with mounting plates (8). The left side of the mounting plates (8) on the upper and lower sides is fixed with a control panel (9). The heat dissipation assembly (7) includes a fan (701) fixed on the upper surface of the heating control box (2). An air outlet plate (702) is fixed on the right side wall of the inner cavity of the heating control box (2). The air outlet end of the fan (701) passes through the heating control box (2) through a pipe and communicates with the upper surface of the air outlet plate (702). A filter cylinder (703) is fixed on the left side of the upper surface of the heating control box (2). Mounting blocks (704) are fixed on the top and bottom walls of the inner cavity of the filter cylinder (703). A first filter screen (705) is fixed on the left side of the mounting blocks (704) on both the upper and lower sides by bolts. The air inlet end of the fan (701) is connected to the right side of the filter cylinder (703) through a pipe.
2. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The air outlet plate (702) includes a rectangular hollow plate, and a plurality of air outlets are connected to the left side of the rectangular hollow plate.
3. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The lower surface of the filter cylinder (703) is provided with an air outlet, and a second filter screen is fixed inside the air outlet.
4. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The insulated box (1) includes an inner frame, an insulated frame is fixed to the outside of the inner frame, and an outer frame is fixed to the outside of the insulated frame.
5. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The left side of the heating control box (2) is connected to a door via a hinge.
6. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The outer diameter of the first filter screen (705) is adapted to the inner diameter of the filter cylinder (703).
7. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The control panel (9) is connected to several annular heating wires (5) via wires.
8. The external electric heating control box for the asphalt insulation box according to claim 1, characterized in that: The control panel (9) is connected to the temperature sensor (6) wires on both sides of the wires.