Hidden electric heating device for railway passenger car

Abstract

The utility model relates to a hidden type electric heating device for a railway passenger car. The hidden type electric heating device comprises an installation frame, side plates, heating wires, a heat dissipation panel, a back plate, a heat insulation plate, an outer cover, a front plate and a power line. The mounting frame is used for fixing the back plate and the heat dissipation panel, the back plate and the heat dissipation panel are embedded through a concave-convex structure, and the heating wire is embedded into a groove of the heat dissipation panel for heating; heat dissipation grooves are formed in the side plates to prevent heat accumulation; heat dissipation holes are formed in the periphery of the outer cover to ensure that heat flows out; the intelligent temperature controller monitors the temperature in real time; and the leakage protector is powered off 0.1 s to ensure safety. The wall-mounted heat exchanger is high in heat efficiency and energy-saving, the wall-mounted heat exchanger is mounted in a wall-mounted manner, and the convection holes of the side plates and the outer cover are designed, so that the heat dissipation efficiency is good; the multifunctional advertising board is attractive in appearance, small in thickness and light in weight, and has advertising display and heating functions.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted electric heating, in particular to a concealed electric heating device for rail passenger vehicles. Background Art

[0002] With the development of rail transit technology in my country, high-speed rail, urban rail, and subways have become the primary modes of transportation for residents, with the subway becoming the preferred mode of transportation for residents in major cities. Consequently, passengers have higher expectations for the comfort of rail vehicles. Especially in winter, and especially in colder regions of northern China, subway and urban rail vehicles must ensure adequate heating while also meeting passengers' expectations for thermal comfort.

[0003] Currently, my country's subways generally use air conditioning preheating combined with PTC electric heaters for supplemental heating. However, this heating method suffers from uneven temperature distribution within the carriages, resulting in large temperature differences. Passengers often experience overheating in the head and coolness in the feet, which affects the thermal comfort of the ride. Furthermore, the high energy consumption is inconsistent with current low-carbon and environmentally friendly concepts. Therefore, it is necessary to develop a new heating device that is both low-carbon and environmentally friendly while effectively improving passenger thermal comfort.

[0004] Carbon fiber and graphene materials have attracted significant attention for their exceptional properties, including high-temperature resistance, lightweight, wear resistance, strong electromagnetic shielding, and corrosion resistance. They also exhibit excellent thermoelectric conversion and thermal conductivity, resulting in extremely high electrothermal conversion efficiency. As a result, these materials have been widely used in heating systems in residential buildings. Heating systems using carbon fiber or graphene as heating components efficiently transfer heat through both convection and radiation, achieving rapid temperature rise and uniform heat distribution, providing excellent thermal comfort. Furthermore, these systems offer low energy consumption and electrothermal efficiency approaching 98%, while maintaining a clean environment and conserving energy, in line with my country's strategic need to promote sustainable development. Summary of the Invention

[0005] In response to the above problems, the purpose of the present utility model is to provide a hidden electric heating device for rail passenger cars, which uses a heating wire with high thermal conductivity, low power consumption, rapid heating, light weight and strong durability as its core heating element. It is small in size and light in weight, which perfectly fits the design concept of lightweight vehicles.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] The utility model proposes a hidden electric heating device for railway passenger cars, comprising a mounting frame, side panels, heating wires, a heat dissipation panel, a back panel, a heat insulation panel, an outer cover, a front panel and a power cord; the back panel is arranged on one side of the heat dissipation panel; the front panel is arranged on the other side of the heat dissipation panel; the mounting frame is a concave structure with a mounting groove formed inside; the mounting frame is buckled between the upper end and the lower end of the heat dissipation panel, the back panel and the front panel respectively; the surface of the heat dissipation panel on the side opposite to the back panel is provided with a plurality of arched protrusions, the interior of the arched protrusions is hollow to form a heating wire mounting groove, and the arched protrusions are connected end to end in sequence; the heating wire is arranged in an S-shaped path Coiled in each heating wire installation groove; the back panel has a hollow structure inside, and a groove corresponding to the arched protrusion is provided on the surface opposite to the heat dissipation panel; the heat dissipation panel and the back panel are embedded in connection through the arched protrusion and the groove; the side panels are correspondingly buckled between the front and rear ends of the heat dissipation panel, the back panel and the front panel, and the upper and lower ends of the side panels are respectively fixedly connected to the back panel; a number of heat dissipation grooves are distributed on the surface of the side panels; the outer cover is correspondingly provided on the outside of the mounting frame and the side panels and is fixedly connected to the mounting frame; the heat insulation plate is correspondingly fixedly connected to one side of the outer cover, and a number of heat dissipation holes are distributed on its surface; one end of the heating wire is connected to the power cord.

[0008] Furthermore, the device also includes an intelligent temperature control system; the intelligent temperature control system includes a thermostat and a temperature sensor; the temperature sensor is connected to the power line through the thermostat.

[0009] Furthermore, a leakage protector is provided on one side of the thermostat.

[0010] Furthermore, the outer cover is processed into rounded corners on all sides.

[0011] Furthermore, the thermal insulation board is a mica insulation board.

[0012] Furthermore, a mounting plate is fixedly connected to the outer end surface of the mounting frame, a mounting hole is opened on the upper side, and a wire screw sleeve is arranged in the mounting hole.

[0013] Furthermore, a transparent plate is fixedly connected to the outer side of the heat insulation plate; and clamping plates are fixedly connected between the transparent plate and the upper and lower sides of the heat insulation plate respectively.

[0014] Furthermore, chamfers are processed around the outer end surface of the transparent plate.

[0015] Furthermore, the card board is made of paper material; and the transparent plate is made of high-temperature resistant and transparent polycarbonate material.

[0016] Furthermore, a replacement slot is provided on one side of the transparent plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model utilizes a heating wire made of high-performance conductive material as its heating element. This heating wire features low energy consumption, rapid heating, high thermal efficiency, lightweight design, and a long service life. Compared to currently used PTC heating elements, this device offers significant energy savings, significantly reducing overall train operating costs.

[0019] 2. The heating module in this utility model adopts an ultra-thin and lightweight design. Compared to traditional heaters (which are bulky, often around 300mm thick, and typically have a frame size of 600mm x 600mm), this device is only approximately 35mm thick. Installed on the side wall, it takes up virtually no space inside the subway car. Furthermore, the heating module is extremely lightweight, posing no additional burden on train operations.

[0020] 3. The heating method of this utility model combines radiation and convection, and the wavelength of the far infrared rays released is close to the wavelength naturally released by the human body, thereby increasing the amount of far infrared rays received by the human body.

[0021] 4. The structural design of the present invention is simple and ingenious. The internal components of the heating module do not require bolt fixation. This innovation not only reduces the overall thickness of the module, but also simplifies the installation process, making disassembly and subsequent maintenance more convenient.

[0022] 5. This utility model introduces a leakage protection measure, namely a 10A leakage protector, which is easy to use, simple to install, safe and reliable.

[0023] 6. The utility model adopts outer cover protection to ensure the personal safety of passengers without affecting heat dissipation. The outer frame has rounded corners and the transparent plate of the billboard has chamfers to prevent passengers from bumping and getting injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the utility model;

[0026] Figure 3 This is the wiring diagram of the heating wire in the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the installation frame in the present utility model;

[0028] Figure 5 This is a cross-sectional view of the heating module in the present utility model;

[0029] Figure 6 This is a schematic structural diagram of the side panel of the utility model;

[0030] Figure 7 This is a schematic diagram of the connection structure between the side panel and the mounting frame of the utility model;

[0031] Figure 8 This is a partial structural diagram of the outer cover of the utility model;

[0032] Figure 9 It is a schematic diagram of the local structure of the utility model;

[0033] Figure 10 It is a partial structural cross-sectional view of the utility model;

[0034] Figure 11 It is a structural schematic diagram of the transparent plate in the utility model.

[0035] Among them, the figure markings are: 1. mounting frame; 2. side panel; 3. heating wire; 4. heat dissipation panel; 5. back panel; 6. transparent plate; 7. card board; 8. heat insulation board; 9. outer cover; 10. replacement slot; 11. heating wire mounting slot; 12. screw thread hole; 13. wire thread sleeve; 14. heat dissipation hole; 15. heat dissipation slot; 16. chamfer; 17. mounting hole; 18. mounting slot; 19. mounting plate; 20. groove; 21. front panel; 22. fillet; 23. power cord; 24. thermostat; 25. leakage protector; 26. temperature sensor. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0038] See attached Figure 1-11 The present invention proposes a concealed electric heating device for a railway passenger car, comprising a mounting frame 1, side panels 2, heating wires 3, a heat dissipation panel 4, a back panel 5, a heat insulation panel 8, an outer cover 9, a front panel 21, and a power cord 23. The heating wires 3, heat dissipation panel 4, back panel 5, heat insulation panel 8, and front panel 21 together constitute a heating module.

[0039] Among them, the back plate 5 is arranged on the rear side of the heat dissipation panel 4; the front plate 21 is arranged on the front side of the heat dissipation panel 4, and the surface of the front plate 21 is coated with a graphene coating, which helps to enhance the anti-corrosion performance and optimize the heat dissipation efficiency; the mounting frame 1 is a concave structure, and a mounting groove 18 is formed inside; the mounting frame 1 is respectively buckled between the upper end and lower end of the heat dissipation panel 4, the back plate 5 and the front plate 21 through its mounting groove 18, and the front plate 21 is fixedly connected to the side wall of the mounting groove 18 by welding, that is, the upper end and lower end of the heat dissipation panel 4, the back plate 5 and the front plate 21 are all fixed with the frame 1 for positioning. In this embodiment, the outer end surface of the mounting frame 1 is fixedly connected with two groups of mounting plates 19, and the upper side of the mounting plate 19 is provided with a mounting hole 17, and a wire screw sleeve 13 is provided in the mounting hole 17. The wire screw sleeve 13 in the mounting hole 17 cooperates with the screw to facilitate the device to be firmly installed at the corresponding position of the car wall.

[0040] The heat dissipation panel 4 is provided with a plurality of arched protrusions distributed along the height direction on the surface of the side opposite to the back plate 5. The arched protrusions are hollow inside to form heating wire installation grooves 11, and the heating wire installation grooves 11 inside each arched protrusion are connected end to end in sequence; the heating wire 3 is coiled in each heating wire installation groove 11 in an S-shaped path to ensure that it is stable and does not fall off or shift, and utilizes the excellent thermal conductivity of the heat dissipation panel 4 to effectively transfer heat.

[0041] The back panel 5 has a hollow structure, and the side surface opposite the heat dissipation panel 4 is uniformly distributed with inwardly recessed grooves 20 along the height direction. The grooves 20 correspond one-to-one with the arched protrusions. The heat dissipation panel 4 and the back panel 5 are embedded in each other through the cooperation of the arched protrusions and the grooves 20. This installation method avoids drilling holes in the heat dissipation panel 4, reducing the complexity of processing and installation. At the same time, the arched protrusions on the heat dissipation panel 4 can increase the heat dissipation area and improve the heat dissipation efficiency. The hollow structure of the back panel 5 uses air as a heat transfer medium and acts as a heat insulator, effectively preventing heat from being lost to the outside of the vehicle through the back, thereby reducing heat waste and allowing heat to be efficiently transferred to the interior of the vehicle through the heat dissipation slots 15 on the side panels 2.

[0042] The side panels 2 are respectively buckled between the front and rear ends of the heat dissipation panel 4, the back panel 5 and the front panel 21, and spiral holes 12 are opened at corresponding positions at the upper and lower ends of the side panels 2 and the back panel 5, and wire screw sleeves 13 are installed in the holes. The side panels 2 and the back panel 5 are fixedly connected by screws and the wire screw sleeves 13 in the spiral holes 12. The use of wire screw sleeves 13 in combination with screws can enhance heat resistance; the outer surface of the side panels 2 is evenly distributed with a number of heat dissipation grooves 15, the two ends of the heat dissipation grooves 15 are semicircular and the middle is rectangular, forming a convection channel, which helps to effectively dissipate the heat generated by the heating wire 3 and prevent heat from accumulating inside the heating module, thereby improving the overall heat dissipation efficiency.

[0043] In this embodiment, in order to cope with the direct contact with the heating wire 3 and the frequent hot and cold alternation and complex working environment in which it is located, the heat dissipation panel 4 is made of an aluminum-magnesium alloy material with excellent heat dissipation performance and light weight. In order to enhance corrosion resistance and improve heat dissipation efficiency, the surface of the heat dissipation panel 4 is evenly coated with a layer of graphene coating.

[0044] The heat dissipation panel 4, the side panel 2 and the outer cover 9 are all made of aluminum-magnesium alloy material with good heat dissipation performance and light weight, and are evenly coated with a graphene coating on their entire surfaces to prevent corrosion and improve heat dissipation efficiency.

[0045] The specification of the heating wire 3 is set to 230W / 12.5 meters, and the material can be graphene or carbon fiber.

[0046] The outer cover 9 is a rectangular frame structure, mounted on the exterior of the upper and lower mounting frames 1 and the front and rear side panels 2, and fixedly connected to the mounting frames 1. The heat shield 8 is fixedly attached to one side of the outer cover 9. The surface of the heat shield 8 is uniformly distributed with a plurality of heat dissipation holes 14. The diameter of the heat shield 14 does not exceed the diameter of a child's finger to protect passenger safety. In this embodiment, the heat shield 8 is made of mica insulation board to prevent overheating and burns to passengers, thereby endangering their lives and property.

[0047] The heating wire 3 is connected to the power wire 23 via concealed hot and cold joints, further improving the safety of use.

[0048] The device also includes an intelligent temperature control system, comprising a thermostat 24 and a temperature sensor 26. The temperature sensor 26 is connected to the power cord 23 via the thermostat 24. The temperature sensor 26 senses the ambient temperature inside the subway car in real time, converts it into a digital signal, and transmits this temperature data to the thermostat 24 via a communication protocol. Upon receiving the temperature data from the temperature sensor 26, the microcontroller built into the thermostat 24 immediately analyzes and processes it. Based on the microcontroller's instructions, the thermostat 24 adjusts the output power of the heating equipment. When the car temperature falls below a preset value, the thermostat 24 increases the output power of the heating equipment to raise the temperature inside the car. When the car temperature reaches or exceeds a preset value, the thermostat 24 reduces the output power of the heating equipment to prevent overheating. This system is particularly suitable for rush hour periods, when subway cars are crowded and temperatures tend to rise. The system can promptly adjust the heating strategy to ensure that the temperature inside the car does not become too high.

[0049] Among them, a leakage protector 25 is provided on one side of the thermostat 24. The rated current of the leakage protector 25 is 10A. As an electrical safety device, its operating mechanism is based on passing the live wire and the neutral wire of the power line through a specially designed zero-sequence current transformer center hole. When the heating module is in normal operation, the current in the live wire and the neutral wire is equal in magnitude and opposite in direction, so no voltage output is generated on the secondary side of the current transformer. However, if there is a residual current in the ground loop (including the earth loop), that is, the current in the two power lines is no longer balanced, the output end of the current transformer will generate a voltage signal proportional to the current magnitude. When this voltage signal reaches a certain threshold, after being amplified by the integrated circuit on the dedicated circuit board, the thyristor element on the board will be activated, causing it to change from the cut-off state to the on state, thereby energizing the trip coil connected in series in the loop, and finally driving the trip device of the main circuit to operate, cutting off the power supply and ensuring the safety of the passengers.

[0050] In this embodiment, a transparent plate 6 is fixedly connected to the outer side of the insulation plate 8; a card plate 7 is fixedly connected between the transparent plate 6 and the upper and lower sides of the insulation plate 8 respectively; the card plate 7 is made of paper material; the transparent plate 6 is made of high-temperature resistant and transparent polycarbonate material; a replacement slot 10 is provided on one side of the transparent plate 6.

[0051] The outer cover 9 is surrounded by rectangular bosses with screw holes 12 formed in them. Corresponding screw holes 12 are also formed in the heat shield 8, the retaining plate 7, and the transparent plate 6. These screw holes 12 are used to secure the outer cover 9 to the heat shield 8, the retaining plate 7, the transparent plate 6, and the inner wall of the vehicle compartment via screws. Wire screw inserts 13 are used in the screw holes 12 to provide improved heat resistance. Rounded corners 22 are also formed around the outer cover to prevent passenger injuries. Billboards or promotional posters can be inserted between the transparent plate 6 and the heat shield 8.

[0052] When replacing a poster, one only needs to pull the old picture out from between the transparent plate 6 and the heat-insulating plate 8 through the replacement slot 10 and reinsert the picture to be replaced to complete the replacement of the billboard or promotional poster; the transparent plate 6 has 1mm chamfers around it to prevent passengers from scratching their hands or bumping into them.

[0053] The overall thickness of the device after assembly is approximately 35mm.

[0054] In the present invention, the power, size, installation position, etc. of a single heating module can be adjusted according to the specific internal structure of different vehicle models. For example, the number of heating wires, the number of heating wire installation slots, the overall size of the heating module, etc. can be changed to adapt to the vehicle compartment to be installed and the specific working environment.

[0055] Matters not described in detail in this utility model are known technologies.

[0056] The embodiments described above are merely descriptions of preferred implementation methods of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A concealed electric heating device for a railway passenger car, characterized in that: The device includes a mounting frame, side panels, a heating wire, a heat dissipation panel, a back panel, a heat insulation panel, an outer cover, a front panel and a power cord; the back panel is arranged on one side of the heat dissipation panel; the front panel is arranged on the other side of the heat dissipation panel; the mounting frame is a concave structure with a mounting groove formed inside; the mounting frame is buckled between the upper end and the lower end of the heat dissipation panel, the back panel and the front panel respectively; the surface of the heat dissipation panel opposite to the back panel is provided with a plurality of arched protrusions, the interior of the arched protrusions is hollow to form a heating wire mounting groove, and the arched protrusions are connected end to end in sequence; the heating wire is coiled in each heating wire mounting groove in an S-shaped path In the middle; the interior of the back plate is a hollow structure, and a groove corresponding to the arched protrusion is provided on the surface opposite to the heat dissipation panel; the heat dissipation panel and the back plate are embedded in each other through the arched protrusion and the groove; the side plates are correspondingly buckled between the front and rear ends of the heat dissipation panel, the back plate and the front plate, and the upper and lower ends of the side plates are respectively fixedly connected to the back plate; the surface of the side plates is evenly distributed with a number of heat dissipation grooves; the outer cover is correspondingly provided on the outside of the mounting frame and the side plates and is fixedly connected to the mounting frame; the heat insulation plate is correspondingly fixedly connected to one side of the outer cover, and a number of heat dissipation holes are evenly distributed on its surface; one end of the heating wire is connected to the power wire.

2. A hidden electric heating device for a railway passenger car according to claim 1, characterized in that: The device also includes an intelligent temperature control system; the intelligent temperature control system includes a temperature controller and a temperature sensor; the temperature sensor is connected to the power line through the temperature controller.

3. The hidden electric heating device for a railway passenger car according to claim 2, characterized in that: A leakage protector is provided on one side of the thermostat.

4. The hidden electric heating device for a railway passenger car according to claim 1, characterized in that: The outer cover is processed into rounded corners on all sides.

5. The hidden electric heating device for a railway passenger car according to claim 1, characterized in that: The heat insulation board is a mica insulation board.

6. The hidden electric heating device for a railway passenger car according to claim 1, characterized in that: The outer end surface of the mounting frame is fixedly connected with a mounting plate, an upper side of which is provided with a mounting hole, and a wire screw sleeve is arranged in the mounting hole.

7. The hidden electric heating device for a railway passenger car according to claim 1, characterized in that: A transparent plate is fixedly connected to the outer side of the heat insulation plate; and clamping plates are fixedly connected between the transparent plate and the upper and lower sides of the heat insulation plate respectively.

8. The hidden electric heating device for a railway passenger car according to claim 7, characterized in that: The outer end surface of the transparent plate is chamfered around four sides.

9. The hidden electric heating device for a railway passenger car according to claim 7, characterized in that: The card board is made of paper material; the transparent plate is made of high-temperature resistant and transparent polycarbonate material.

10. The hidden electric heating device for a railway passenger car according to claim 7, characterized in that: A replacement slot is provided on one side of the transparent plate.

Images