Indoor heating and ventilation equipment with energy-saving heating

Abstract

The utility model discloses an indoor heating equipment with energy -conserving heating, including bottom plate, the bottom plate upper side wall both ends are provided with symmetrical protection box, one of protection box is provided with lifting rod, another protection box is provided with sliding rod, one protection box upper side wall is provided with first motor, lifting rod with first motor output end is connected, lifting rod with sliding rod all is provided with lifting block on, one lifting block with lifting rod screw connection, another lifting block with sliding rod sliding connection is connected, and the utility model discloses a connecting plate is arranged between two lifting blocks, and the connecting plate upper side wall one end is provided with the heating -radiating piece, the heating -radiating piece one side is provided with filter circulation subassembly, and the connecting plate upper side wall other end is provided with photovoltaic module, has improved the applicability and reliability of equipment, and adapts the demand of different scenes such as family living room, bedroom, office etc.

Description

Technical Field

[0001] This utility model relates to the field of indoor heating and ventilation technology, and more specifically, it relates to an indoor heating and ventilation device with energy-saving heating. Background Technology

[0002] In existing indoor settings such as homes and office buildings, heating equipment is the core for regulating room temperature. Common types include electric radiators, wall-mounted radiators, and fan heaters. However, due to structural and functional limitations, these devices are difficult to meet the requirements of "energy saving, high efficiency, and convenience" and have many problems.

[0003] First, traditional equipment relies heavily on pure electricity or municipal heating, resulting in high energy consumption and significant waste. Although some equipment attempts to incorporate solar energy, they adopt a split design, occupying additional space. At the same time, the photovoltaic panels have a fixed angle, leading to low light energy utilization.

[0004] Meanwhile, small-scale water heating systems use water pumps to drive water circulation for heat dissipation. However, because no filter components are installed, the medium is prone to mixing with impurities such as scale and metal shavings during long-term use. These impurities accumulate in narrow places such as radiator vents and water pump interfaces, causing a decrease in circulation speed and a gradual reduction in heat dissipation efficiency.

[0005] In addition, most devices are fixed in height or cannot be moved after installation, have limited heat dissipation range, are prone to uneven room temperature, are difficult to adapt to the needs of different people and scenarios, and have a high operating threshold. Utility Model Content

[0006] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an indoor heating and ventilation equipment with energy-saving heating, so as to solve the technical problems of limited heat dissipation range and lack of filter components mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: An energy-saving indoor heating and ventilation system includes a base plate with symmetrical protective boxes at both ends of its sidewall. One protective box contains a lifting rod, and the other contains a sliding rod. A first motor is mounted on the upper sidewall of one of the protective boxes. The lifting rod is connected to the output end of the first motor. Both the lifting rod and the sliding rod have lifting blocks. One lifting block is threadedly connected to the lifting rod, and the other is slidably connected to the sliding rod. A connecting plate is provided between the two lifting blocks. A radiator is mounted on one sidewall of the connecting plate, and a filter circulation assembly is mounted on one side of the radiator. A photovoltaic module is mounted on the other sidewall of the connecting plate.

[0008] The present invention is further configured such that the filter circulation assembly includes a circulation pipe, a filter box, and filter cotton. The circulation pipe is symmetrically arranged at the upper and lower ends of one side of the radiator. A water pump is provided at the lower end of the upper circulation pipe. The filter box is located between the two circulation pipes. The filter cotton is inside the filter box and adapted to it. The filter cotton and the filter box are connected by a replacement component to avoid blockage of the pipes and water pump and maintain heat dissipation efficiency.

[0009] The present invention is further configured such that the photovoltaic module includes a universal joint and a photovoltaic panel, the universal joint is located at the other end of the side wall of the connecting plate, the photovoltaic panel is located on the universal joint, and a battery for power supply is provided on the rear side of the photovoltaic panel. The angle can be flexibly adjusted to better adapt to the direction of sunlight and improve the utilization rate of light energy.

[0010] The present invention is further configured such that the replacement component includes a damping slide rail, a damping slide strip, and a sealing plate. The damping slide rail is located at both ends of the inner side wall of the filter box, and the damping slide strip is located on both side walls of the filter cotton. The damping slide strip passes through the damping slide rail and is slidably connected to it. The sealing plate is located at the front end of the damping slide strip and is adapted to the filter box. Symmetrical fixing blocks are provided on the inner side of the sealing plate. Grooves are provided on the side wall of the filter box. The fixing blocks pass through the grooves and are slidably connected to them. The fixing blocks and the grooves are connected by pins, which can quickly fix or remove the filter cotton without the need for professional tools.

[0011] The present invention is further provided that the four corners of the bottom wall of the base plate are provided with casters, and the casters are provided with brake components adapted to them, so that the heating position can be adjusted according to the indoor activity area (such as living room, bedroom).

[0012] The present invention is further provided that the upper end of the side wall of the radiator is provided with a water inlet with a sealing valve, which facilitates the control of the water injection switch and allows for precise control of the water volume during water injection.

[0013] The present invention is further provided with a silicone sealing ring on the inner edge of the sealing plate, the silicone sealing ring being tightly fitted to the outer wall of the filter box, thereby further enhancing the sealing performance of the filter box and preventing leakage of the circulating medium.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides an indoor heating and ventilation device with energy-saving heating, which has the following beneficial effects: 1. The photovoltaic panel, relying on the universal joint on the connecting plate, can flexibly adjust the installation angle and optimize the orientation in real time according to the direction of sunlight at different times, maximizing the capture of solar energy and converting it into electrical energy. This effectively makes up for the shortcomings of traditional split photovoltaic heating equipment, such as fixed angle and low light energy utilization. The battery can be used as an emergency power source to maintain the heating function, avoid heating interruption, and improve the applicability and reliability of the equipment.

[0015] 2. The circulation pipes are symmetrically arranged at the top and bottom of the radiator. Together with the water pump, the heating medium is driven to circulate stably in the pipes, ensuring that heat is continuously and evenly distributed through the radiator. The filter structure composed of filter box and filter cotton can effectively intercept impurities such as scale and metal shavings mixed in the medium, preventing impurities from accumulating in narrow places such as radiator vents and water pump interfaces, avoiding a decrease in circulation speed and heat dissipation efficiency, while protecting the water pump and other core components from damage and extending the overall service life of the equipment.

[0016] 3. When the first motor drives the lifting rod to rotate, the lifting block, which is threadedly connected to the lifting rod, drives the connecting plate and the radiators, photovoltaic modules and other components on the plate to rise and fall as a whole. The lifting block on the other side, which is slidably connected to the sliding rod, plays a stabilizing and guiding role, so that the equipment can flexibly adjust the height of the radiators according to the indoor space height and the area where people are active, adapting to the needs of different scenarios such as family living rooms, bedrooms and offices, and improving the practical value of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the energy-saving indoor heating and ventilation equipment of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the energy-saving indoor heating and ventilation equipment of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the energy-saving indoor heating and ventilation equipment of this utility model. Figure 3 ; Figure 4 This is an exploded view of the internal structure of the filter box in the energy-saving indoor heating and ventilation equipment of this utility model. Figure 5 This is a schematic diagram of the internal cross-section of the protective box for energy-saving indoor heating and ventilation equipment in this utility model.

[0018] In the diagram: 1. Base plate; 2. Protective box; 3. Lifting rod; 4. Sliding rod; 5. First motor; 6. Lifting block; 7. Connecting plate; 8. Radiator; 9. Circulation pipe; 10. Filter box; 11. Filter cotton; 12. Water pump; 13. Universal shaft; 14. Photovoltaic panel; 15. Battery; 16. Damping slide rail; 17. Damping slide bar; 18. Sealing plate; 19. Fixing block; 20. Pin; 21. Universal wheel; 22. Sealing valve. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figure 1-5 An energy-saving indoor heating and ventilation system includes a base plate 1. Symmetrical protective boxes 2 are provided at both ends of the upper sidewall of the base plate 1. A lifting rod 3 is installed inside one of the protective boxes 2, and a sliding rod 4 is installed inside the other. A first motor 5 is installed on the upper sidewall of one of the protective boxes 2. The lifting rod 3 is connected to the output end of the first motor 5. Lifting blocks 6 are provided on both the lifting rod 3 and the sliding rod 4. One lifting block 6 is threadedly connected to the lifting rod 3, and the other lifting block 6 is slidably connected to the sliding rod 4. A connecting plate 7 is provided between the two lifting blocks 6. A radiator 8 is installed at one end of the upper sidewall of the connecting plate 7. A filter circulation assembly is installed on one side of the radiator 8, and a photovoltaic module is installed at the other end of the upper sidewall of the connecting plate 7.

[0023] The filter circulation assembly includes a circulation pipe 9, a filter box 10, and filter cotton 11. The circulation pipe 9 is symmetrically arranged at the upper and lower ends of one side of the radiator 8. A water pump 12 is provided at the lower end of the upper circulation pipe 9. The filter box 10 is located between the two circulation pipes 9. The filter cotton 11 is inside the filter box 10 and is adapted to it. The filter cotton 11 and the filter box 10 are connected by a replacement component.

[0024] The photovoltaic module includes a universal joint 13 and a photovoltaic panel 14. The universal joint 13 is located at the other end of the upper side wall of the connecting plate 7, and the photovoltaic panel 14 is located on the universal joint 13. A battery 15 for power supply is provided on the rear side of the photovoltaic panel 14.

[0025] The upper side wall of the radiator 8 is provided with a water inlet with a sealing valve 22.

[0026] In this embodiment, the device is moved to an indoor area with ample sunlight (such as near a balcony or window). The water inlet with the sealing valve 22 on the upper side wall of the radiator 8 is opened, and water is slowly injected into the radiator 8 through the inlet. During the water injection process, the air vent valve (standard equipment on radiators) of the radiator 8 can be opened appropriately to release internal air and avoid air blockage that could affect the heating effect. After the water is full, the sealing valve 22 is closed. According to the current direction of sunlight, the universal joint 13 of the photovoltaic module on the connecting plate 7 is manually adjusted so that the photovoltaic panel 14 is precisely aligned with the sun. The photovoltaic panel 14 absorbs solar energy under sunlight and converts the solar energy into electrical energy through the internal photovoltaic module. A portion of the electrical energy directly powers the first motor 5, water pump 12, and other electrical components of the device. The photovoltaic panel 14 provides power, and the remaining electrical energy is stored in the battery 15 on the back side of the photovoltaic panel 14. When heating is needed indoors, the heating wire (the standard heating element of the equipment) inside the radiator 8 is activated. After the heating wire is powered on, it heats up and heats the water in the radiator 8. As the water temperature gradually rises, the water pump 12 on the circulation pipe 9 is activated. The water pump 12 generates power and drives the hot water in the radiator 8 to flow into the filter box 10 along the upper circulation pipe 9. When the hot water flows through the filter box 10, the internal filter cotton 11 will intercept scale, impurities and other impurities in the water to prevent impurities from clogging the pipes or affecting the heat dissipation efficiency. The filtered hot water then flows back to the radiator 8 through the lower circulation pipe 9 and dissipates heat into the room through thermal radiation and thermal convection, gradually increasing the indoor temperature.

[0027] More specifically, during the heating process, the first motor 5 on the protection box 2 can be activated according to the indoor activity area, height differences, or room height requirements. The output of the first motor 5 drives the lifting rod 3 to rotate. Since the lifting block 6 connected to the lifting rod 3 is threaded, the rotation of the lifting rod 3 is converted into the vertical lifting motion of the lifting block 6. At the same time, the lifting block 6 connected to the sliding rod 4 on the other side slides synchronously along the sliding rod 4, which plays a stabilizing and guiding role. The two lifting blocks 6 drive the connecting plate 7 and the radiators 8, photovoltaic modules, etc. on the plate to rise and fall as a whole, expanding the heat dissipation coverage. After the filter cotton 11 has been used for a period of time, if the circulating water flow slows down or the heat dissipation efficiency decreases, the filter cotton 11 can be replaced through the replacement component on the filter box 10.

[0028] Please see Figures 1-5As one implementation of the replacement component: the replacement component includes a damping slide rail 16, a damping slide strip 17, and a sealing plate 18. The damping slide rail 16 is located at both ends of the inner sidewall of the filter box 10, and the damping slide strip 17 is located on both sidewalls of the filter cotton 11. The damping slide strip 17 passes through the damping slide rail 16 and is slidably connected to it. The sealing plate 18 is located at the front end of the damping slide strip 17 and is adapted to the filter box 10. Symmetrical fixing blocks 19 are provided on the inner side of the sealing plate 18. The sidewall of the filter box 10 is provided with a groove. The fixing blocks 19 pass through the groove and are slidably connected to it. The fixing blocks 19 and the groove are connected by pins 20.

[0029] Specifically, when it is necessary to replace the filter cotton 11 in the filter box 10, first pull out the pin 20 at the connection between the fixing block 19 and the groove of the filter box 10 to release the fixing relationship between the two. Then push the symmetrical fixing block 19 on the inner side of the sealing plate 18 so that it slides along the groove of the side wall of the filter box 10, so that the sealing plate 18 is separated from the filter box 10. Next, grasp the sealing plate 18 and pull it outward. The damping slide strips 17 on both sides of the filter cotton 11 will slide smoothly along the damping slide rails 16 at both ends of the inner side wall of the filter box 10, so that the filter cotton 11 is taken out from the filter box 10 together with the sealing plate 18. After replacing the new filter cotton 11, align the damping slide strips 17 on both sides of the filter cotton 11 with the damping slide rails 16 in the filter box 10, push the sealing plate 18 to drive the filter cotton 11 into the filter box 10 until the sealing plate 18 is in contact with the filter box 10. Then slide the fixing block 19 to make it snap into the groove, insert the pin 20 to fix it, and complete the replacement of the filter cotton 11.

[0030] Please see Figures 1-5 As one implementation of the caster wheel 21: caster wheels 21 are provided at the four corners of the bottom wall of the base plate 1, and brake components adapted to them are provided on the caster wheels 21.

[0031] Specifically, when it is necessary to adjust the placement of the equipment indoors, the brake assembly on the caster 21 is released to remove the fixing restriction on the caster 21. At this time, with the help of the casters 21 at the four corners of the base plate 1, the equipment can be easily moved in any direction without the need for strenuous handling, adapting to the usage needs of different indoor scenarios.

[0032] Please see Figures 1-5 As one embodiment of the silicone sealing ring: the inner edge of the sealing plate 18 is provided with a silicone sealing ring, and the silicone sealing ring is tightly fitted to the outer wall of the filter box 10.

[0033] Specifically, the silicone sealing ring on the inner side of the sealing plate 18 will move with the sealing plate 18 and make close contact with the outer wall of the filter box 10. Due to the good elasticity of the silicone material, the sealing ring will deform slightly under the pressure of the fit, filling the gap between the sealing plate 18 and the filter box 10, forming a reliable sealing structure.

[0034] In summary, when using the overall equipment: Move the device to a well-lit indoor area (such as near a window or balcony with direct sunlight). Use the casters 21 at the four corners of the base plate 1 to adjust the placement. Once the position is determined, operate the brake assembly on the casters 21 to secure the device by tightly fitting the brake pads to the wheel body, preventing it from slipping during subsequent use.

[0035] Then, open the water inlet with sealing valve 22 on the upper side wall of radiator 8 and slowly fill radiator 8 with water. During the water filling process, the air in radiator 8 can be discharged through the air vent (standard configuration) reserved in the equipment to avoid air blockage affecting the circulation of heating medium. After the water is full, close sealing valve 22 to ensure that there is no leakage in radiator 8 and connecting pipes, and prepare for subsequent heating. At the same time, according to the current direction of sunlight, manually adjust the universal joint 13 of photovoltaic module on connecting plate 7 and rotate photovoltaic panel 14 so that its front is accurately aligned with the sun to maximize the reception of solar energy.

[0036] After the equipment is started, the photovoltaic panel 14 converts solar energy into electrical energy under sunlight. Part of the electrical energy directly powers the first motor 5, water pump 12 and other electrical components of the equipment, while the remaining electrical energy is stored in the battery 15 behind the photovoltaic panel 14, forming a "real-time power supply + energy storage backup" mode, reducing dependence on the external power grid. Even in the event of a power outage, the battery 15 can still supply power to the core components, ensuring the basic operation of the heating function.

[0037] When indoor heating is needed, the heating wire inside the radiator 8 is activated. After the heating wire is energized and heats up, it quickly heats the water inside the radiator 8, causing the water temperature to gradually rise. Once the water temperature reaches a suitable heating temperature, the water pump 12 on the circulation pipe 9 is activated. The operation of the water pump 12 generates power, driving the hot water in the radiator 8 to flow into the filter box 10 along the upper circulation pipe 9. When the hot water flows through the filter box 10, the internal filter cotton 11 intercepts impurities such as scale and metal fragments caused by pipe corrosion, preventing impurities from clogging the heat dissipation holes of the radiator 8 or the interface of the water pump 12. The filtered clean hot water then flows back to the radiator 8 through the lower circulation pipe 9, forming a closed loop of "heating-filtration-circulation". This allows the radiator 8 to maintain a high temperature continuously, dissipating heat into the indoor space through thermal radiation and convection, gradually increasing the indoor temperature and improving living comfort.

[0038] During the heating process, the height of the radiator 8 can be adjusted by the lifting rod 3 and the lifting block 6 according to the needs of indoor activities, the height of the space, or the temperature distribution. The first motor 5 on one of the protection boxes 2 is started. The output end of the first motor 5 drives the internal lifting rod 3 to rotate. Since the lifting block 6 connected to the lifting rod 3 is threaded, the rotational motion of the lifting rod 3 is converted into the vertical lifting of the lifting block 6. At the same time, the lifting block 6 on the sliding rod 4 in the other protection box 2 slides up and down along the sliding rod 4 to provide stable guidance for the connecting plate 7 and prevent tilting. The two lifting blocks 6 drive the connecting plate 7 and the radiator 8, photovoltaic modules, etc. on the plate to rise and fall as a whole.

[0039] If children are playing on the ground or the elderly are sitting for long periods of time, the radiator 8 can be lowered to a lower height so that the heat is concentrated in areas where people are frequently active. If the indoor ceiling is high or adults are working at a desk, the radiator 8 can be raised to a higher position to expand the heat dissipation coverage. During this process, after the photovoltaic panel 14 is raised and lowered with the connecting plate 7, the universal joint 13 can be finely adjusted again to ensure that it is always aligned with the sun and does not affect the solar energy conversion efficiency.

[0040] If, after the equipment has been running for a period of time, the circulating water flow rate slows down and the heat dissipation efficiency of the radiator 8 decreases, it indicates that the filter cotton 11 inside the filter box 10 has absorbed a lot of impurities and needs to be replaced. First, turn off the water pump 12 to stop the circulation of the heating medium. Then, pull out the pin 20 at the connection between the fixing block 19 on the inner side of the sealing plate 18 and the groove of the filter box 10 to release the fixing relationship between the two. Push the fixing block 19 to slide it along the groove, allowing the sealing plate 18 to separate from the filter box 10. Next, grasp the sealing plate 18 and pull it outward. The damping slide strips 17 on both sides of the filter cotton 11 will slide smoothly along the damping slide rails 16 on the inner side of the filter box 10, allowing the filter cotton 11 to move smoothly along the groove. Remove the sealing plate 18 along with the filter cotton 11. After replacing it with a new filter cotton 11, align the damping slide strips 17 on both sides of the sealing plate 18 with the damping slide rails 16 inside the filter box 10. Slowly push the sealing plate 18 so that the filter cotton 11 is fully inserted into the filter box 10 until the silicone sealing ring on the inner edge of the sealing plate 18 is tightly fitted with the outer wall of the filter box 10. The elastic deformation of the silicone sealing ring fills the gaps, ensuring the airtightness of the filter box 10. Finally, slide the fixing block 19 to make it snap into the groove of the filter box 10, insert the pin 20 to complete the fixation, and restart the water pump 12 to restore the heating circulation. The entire replacement process does not require disassembling the pipeline and can be operated independently by ordinary users, which is convenient and efficient.

[0041] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents. In all the solutions mentioned above, the operation of electrical components is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. An indoor heating and ventilation system with energy-saving heating, comprising a base plate (1), characterized in that: The base plate (1) has symmetrical protective boxes (2) at both ends of its upper sidewall. One of the protective boxes (2) has a lifting rod (3) and the other protective box (2) has a sliding rod (4). The upper sidewall of one of the protective boxes (2) has a first motor (5). The lifting rod (3) is connected to the output end of the first motor (5). Both the lifting rod (3) and the sliding rod (4) have lifting blocks (6). One of the lifting blocks (6) is threaded to the lifting rod (3) and the other lifting block (6) is slidably connected to the sliding rod (4). A connecting plate (7) is provided between the two lifting blocks (6). A radiator (8) is provided at one end of the upper sidewall of the connecting plate (7). A filter circulation component is provided on one side of the radiator (8) and a photovoltaic module is provided at the other end of the upper sidewall of the connecting plate (7).

2. An indoor heating and ventilation system with energy-saving heating according to claim 1, characterized in that: The filter circulation assembly includes a circulation pipe (9), a filter box (10), and filter cotton (11). The circulation pipe (9) is symmetrically arranged at the upper and lower ends of one side of the radiator (8). A water pump (12) is provided at the lower end of the upper circulation pipe (9). The filter box (10) is located between the two circulation pipes (9). The filter cotton (11) is inside the filter box (10) and adapted to it. The filter cotton (11) and the filter box (10) are connected by a replacement component.

3. An indoor heating and ventilation system with energy-saving heating according to claim 1, characterized in that: The photovoltaic module includes a universal joint (13) and a photovoltaic panel (14). The universal joint (13) is located at the other end of the upper side wall of the connecting plate (7), and the photovoltaic panel (14) is located on the universal joint (13). A battery (15) for power supply is provided on the rear side of the photovoltaic panel (14).

4. An indoor heating and ventilation system with energy-saving heating according to claim 2, characterized in that: The replacement component includes a damping slide rail (16), a damping slide bar (17), and a sealing plate (18). The damping slide rail (16) is located at both ends of the inner side wall of the filter box (10), and the damping slide bar (17) is located on both side walls of the filter cotton (11). The damping slide bar (17) passes through the damping slide rail (16) and is damped and slidably connected to it. The sealing plate (18) is located at the front end of the damping slide bar (17) and is adapted to the filter box (10). Symmetrical fixing blocks (19) are provided on the inner side of the sealing plate (18). The side wall of the filter box (10) is provided with a groove. The fixing blocks (19) pass through the groove and are slidably connected to it. The fixing blocks (19) and the groove are connected by a pin (20).

5. An indoor heating and ventilation system with energy-saving heating according to claim 1, characterized in that: The bottom wall of the base plate (1) is provided with casters (21) at the four corners, and the casters (21) are provided with brake components adapted to them.

6. An indoor heating and ventilation system with energy-saving heating according to claim 1, characterized in that: The upper side wall of the radiator (8) is provided with a water inlet with a sealing valve (22).

7. An indoor heating and ventilation system with energy-saving heating according to claim 4, characterized in that: The inner edge of the sealing plate (18) is provided with a silicone sealing ring, which is tightly fitted to the outer wall of the filter box (10).

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