Electric heater

Abstract

The present invention relates to an electric heater, comprising a heating base, a back plate and an upper cover, wherein the back plate is arranged on the heating base, the heating base comprises a graphene heating film, a base and a reflecting plate, the graphene heating film is arranged in the base, the graphene heating film is close to the upper end surface of the base, the reflecting plate is arranged in the inner cavity of the base and is located below the graphene heating film, the reflecting plate is close to the lower end surface of the base, the upper cover is arranged on the base in a rotating manner, the upper cover, the back plate and the base together form a heating cavity, and the upper cover is rotated to adjust the volume of the heating cavity. Different foot-warming needs of users are met, and heat flows in the heating cavity, the heating cavity reduces heat loss, and greatly improves the foot-warming effect.

Description

Technical Field

[0001] The invention relates to an electric heater. Background Art

[0002] With the development of science and technology, people's quality of life is constantly improving, and the requirements for household appliances are also constantly increasing. Because it is inconvenient to use stoves for heating in winter and it is easy to cause carbon monoxide poisoning if you are not careful, a group of heating devices have appeared on the market that use heating plates to refract heat to achieve a heating effect.

[0003] There are two types of electric heaters on the market, one is flat and the other is foldable. Market research found that both types of electric heaters have a defect: the soles of the feet are heated while the insteps are exposed, or the back is heated while the soles of the feet become cold. The heating effect is poor and the user experience is very bad. Summary of the invention

[0004] The object of the present invention is to provide an electric heater with simple structure, adjustable heating range and good heating effect.

[0005] The object of the present invention is achieved in that:

[0006] An electric heater comprises a heating base, a back plate and an upper cover, wherein the back plate is arranged on the heating base, and the heating base comprises a graphene heating film, a base and a reflecting plate, wherein the graphene heating film is arranged in the base, the graphene heating film is close to the upper end surface of the base, the reflecting plate is arranged in the inner cavity of the base and is located below the graphene heating film, the reflecting plate is close to the lower end surface of the base, and the upper cover is rotatably arranged on the base, the upper cover, the back plate and the base together form a heating chamber, and the upper cover is rotated to adjust the volume of the heating chamber.

[0007] The graphene heating film is arranged in the base, and the reflecting plate is arranged below the graphene heating film. The heat of the graphene heating film is transferred upward to the surface of the base (i.e., the inner wall of the heating chamber) to warm the feet, and the heat of the graphene heating film is transferred downward to the reflecting plate, and the reflecting plate reflects the heat to the surface of the base (i.e., the inner wall of the heating chamber), reducing heat loss and enhancing the heating effect. Moreover, the upper cover is rotatably arranged on the base, and the upper cover, the back plate and the base together form a heating chamber. The user can adjust the volume of the heating chamber by rotating the upper cover to meet the user's different foot warming needs. Moreover, the heat flows in the heating chamber, and the heating chamber reduces heat loss, greatly improving the foot warming effect.

[0008] The purpose of the present invention can also be solved by the following technical measures:

[0009] Furthermore, the heating base also includes a thermal protection switch and a temperature sensor, which are arranged in the base, and the temperature measuring end of the temperature sensor is close to the graphene heating film, and the graphene heating film, the thermal protection switch and the temperature sensor are electrically connected. The temperature sensor monitors the temperature of the graphene heating film in real time. If the temperature of the graphene heating film reaches a preset temperature value, the thermal protection switch immediately disconnects the power supply of the graphene heating film to prevent the electric heater from overheating, thereby greatly improving the safety of the electric heater.

[0010] Furthermore, the electric heater also includes a deodorizing device, which is arranged in the base. By arranging the deodorizing device, the deodorizing device can absorb odors, avoid the generation of odors or the retention of odors in the heating chamber, and improve the hygiene of the electric heater.

[0011] Furthermore, the upper cover includes an upper cover body, a graphene heating film and a reflecting plate. The graphene heating film is arranged in the inner cavity of the upper cover body, and the graphene heating film is close to the lower end surface of the upper cover body. The reflecting plate is arranged in the inner cavity of the upper cover body and is located above the graphene heating film, and the reflecting plate is close to the upper end surface of the upper cover body.

[0012] The graphene heating film is arranged in the upper cover body, and the reflecting plate is arranged above the graphene heating film. The heat of the graphene heating film is transferred downward to the bottom surface of the upper cover body (i.e., the inner wall of the heating chamber) to warm the feet, and the heat of the graphene heating film is transferred upward to the reflecting plate, and the reflecting plate reflects the heat to the bottom surface of the upper cover body (i.e., the inner wall of the heating chamber), reducing heat loss and enhancing the heating effect. Moreover, the graphene heating film of the upper cover and the graphene heating film of the base generate heat together to form surround heating and achieve uniform heating effect.

[0013] Furthermore, the upper cover also includes a thermal protection switch, which is arranged in the upper cover body, and the graphene heating film is electrically connected to the thermal protection switch. If the temperature of the graphene heating film reaches a preset temperature value, the thermal protection switch immediately disconnects the power supply of the graphene heating film to prevent the electric heater from overheating, thereby greatly improving the safety of the electric heater.

[0014] Furthermore, the upper end surface of the upper cover body is provided with grooves at intervals to form a concave-convex surface. When the upper cover body rotates, the upper cover body can move away from the back plate or enter the area between the back plate and the base. When the upper cover body enters or leaves the area between the back plate and the base, the concave-convex surface contacts the bottom surface of the back plate, causing the upper cover body to vibrate, thereby enhancing the user's hand feeling when rotating the upper cover body. In addition, the concave-convex surface design of the upper cover body facilitates the mold opening of the upper cover body, avoids deformation of the upper cover body, and greatly reduces the production cost.

[0015] Furthermore, it also includes a blocking block, the back plate has an installation opening, a sliding groove is arranged on the periphery of the installation opening, the back plate is arranged on the heating base, the upper cover body is provided with a rotating shaft, a sliding block is arranged on the rotating shaft, the rotating shaft passes through the installation opening, and the sliding block enters the sliding groove and slides along the sliding groove, the blocking block is detachably arranged in the sliding groove, and the blocking block limits the sliding range of the sliding block, thereby limiting the rotation angle of the upper cover body.

[0016] The rotating shaft of the upper cover body is inserted into the mounting opening of the back plate, the upper cover body and the back plate are rotatably connected, and the back plate is provided with a sliding groove, and the rotating shaft is provided with a slider, the slider enters the sliding groove and slides along the sliding groove, and the blocking block is detachably arranged in the sliding groove, and the blocking block limits the sliding range of the slider, resulting in the rotation angle of the upper cover body being limited, thereby limiting the volume adjustment range of the heating chamber and improving the practicality of the electric heater.

[0017] Furthermore, the slider is tightly attached to the inner wall of the slide groove, and the slider and the slide groove are interference fit. The user rotates the upper cover to adjust the volume of the heating chamber. When the user stops rotating the upper cover, the upper cover cannot overcome the resistance only under the action of gravity due to the interference fit of the slider and the slide groove, and the upper cover cannot rotate freely, maintaining the adjustment state of the heating chamber, thereby preventing the upper cover from loosening or self-rotating. The interference fit method reduces the number of externally purchased shaft keys, reduces materials, and reduces costs.

[0018] Furthermore, a temperature adjustment panel is included, and the temperature adjustment panel is arranged on the base, and the graphene heating film, the thermal protection switch and the temperature sensor are electrically connected to the temperature adjustment panel respectively. The user can start and adjust the temperature of the graphene heating film of the base and the temperature of the graphene heating film of the upper cover at the same time through the temperature adjustment area, so as to achieve common temperature adjustment and simple temperature adjustment.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the present invention, the graphene heating film is arranged in the base, and the reflecting plate is arranged below the graphene heating film. The heat of the graphene heating film is transferred upward to the surface of the base (i.e., the inner wall of the heating chamber) to warm the feet, and the heat of the graphene heating film is transferred downward to the reflecting plate, and the reflecting plate reflects the heat to the surface of the base (i.e., the inner wall of the heating chamber), thereby reducing heat loss and enhancing the heating effect. Moreover, the upper cover is rotatably arranged on the base, and the upper cover, the back plate and the base together form a heating chamber. The user can adjust the volume of the heating chamber by rotating the upper cover to meet the user's different foot-warming needs. Moreover, the heat flows in the heating chamber, and the heating chamber reduces heat loss, thereby greatly improving the foot-warming effect.

[0021] In the present invention, the graphene heating film is arranged in the upper cover body, and the reflecting plate is arranged above the graphene heating film. The heat of the graphene heating film is transferred downward to the bottom surface of the upper cover body (that is, the inner wall of the heating chamber) to warm the feet, and the heat of the graphene heating film is transferred upward to the reflecting plate, and the reflecting plate reflects the heat to the bottom surface of the upper cover body (that is, the inner wall of the heating chamber), reducing heat loss and enhancing the heating effect. Moreover, the graphene heating film of the upper cover and the graphene heating film of the base generate heat together to form surround heating and achieve uniform heating effect.

[0022] In the present invention, the rotating shaft of the upper cover body is inserted into the mounting opening of the back plate, the upper cover body and the back plate are rotatably connected, and the back plate is provided with a sliding groove, and the rotating shaft is provided with a slider, the slider enters the sliding groove and slides along the sliding groove, and the blocking block is detachably arranged in the sliding groove, and the blocking block limits the sliding range of the slider, resulting in the rotation angle of the upper cover body being limited, thereby limiting the volume adjustment range of the heating chamber, and improving the practicality of the electric heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of an electric heater.

[0024] Figure 2 This is a schematic diagram of the cross section of an electric heater.

[0025] Figure 3 This is the left side view of the electric heater.

[0026] Figure 4 for Figure 3 AA section view.

[0027] Figure 5 for Figure 4 Enlarged view of part B.

[0028] Figure 6 This is an exploded view of the electric heater.

[0029] Figure 7 This is a schematic diagram of the surround heating of the electric heater. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0031] Example, combined with Figures 1 to 7 As shown, an electric heater includes a heating base, a back plate 1, a heating upper cover, a deodorizing device and a shielding cover 10.

[0032] The heating base includes a graphene heating film 2, a base 3, a reflecting plate 4, a temperature sensor 9, a thermal protection switch 5 and a temperature control panel 6. The graphene heating film 2 is arranged in the base 3, and the graphene heating film 2 is close to the upper end surface of the base 3. The reflecting plate 4 is arranged in the inner cavity of the base 3 and is located below the graphene heating film 2. The reflecting plate 4 is close to the lower end surface of the base 3. The temperature control panel 6 is arranged on the base 3, and the thermal protection switch 5 is arranged in the base 3. The graphene heating film 2, the temperature sensor 9, the thermal protection switch 5 and the temperature control panel 6 are electrically connected.

[0033] The heating upper cover includes an upper cover body 7, a graphene heating film 2, a reflecting plate 4, and a thermal protection switch 5. The upper cover body 7 is an arc-shaped upper cover body 7. The upper cover body 7 is provided with a rotating shaft 71. A slider 72 is provided on the rotating shaft 71. The slider 72 is an arc-shaped slider. The arc-shaped slider is arranged on the outer wall of the rotating shaft 71 near the port position. The upper end surface of the upper cover body 7 is provided with grooves 73 at intervals to form a concave-convex surface. The graphene heating film 2 is arranged in the inner cavity of the upper cover body 7. The graphene heating film 2 is close to the lower end surface of the upper cover body 7. The reflecting plate 4 is arranged in the inner cavity of the upper cover body 7 and is located above the graphene heating film 2. The reflecting plate 4 is close to the upper end surface of the upper cover body 7. The thermal protection switch 5 is arranged in the upper cover body 7. The graphene heating film 2, the thermal protection switch 5 and the temperature control panel 6 are electrically connected.

[0034] The back plate 1 is an arc-shaped back plate, and a mounting portion 11 is provided on the outer wall of the back plate 1. The mounting portion 11 has a mounting opening 12. The back plate 1 is provided with a sliding groove 13 on the periphery of the mounting opening 12. The sliding groove 13 is an arc-shaped sliding groove. The back plate 1 is arranged on the base 3.

[0035] The rotating shaft 71 of the upper cover body 7 passes through the installation opening 12 of the back plate 1, and the slider 72 enters the sliding groove 13. The outer wall of the slider 72 is close to the inner wall of the sliding groove 13, so that the slider 72 and the sliding groove 13 are interference-fitted. The inner wall of the shielding cover 10 is provided with a blocking block 14. The shielding cover 10 is set at the open mouth of the installation opening 12, and then the shielding cover is locked and the installation part 11 is closed by bolts. At this time, the blocking block 14 enters the sliding groove 13, and the blocking block 14 limits the sliding range of the slider 72 in the sliding groove 13, thereby limiting the rotation angle of the upper cover body 7. The rotation range of the upper cover body 7 is 0-56°.

[0036] The upper cover 7 , the back plate 1 and the heating base 3 together form a heating chamber 8 . When the upper cover 7 rotates, the upper cover 7 adjusts the volume of the heating chamber 8 .

[0037] The adjustment gears of the temperature adjustment panel 6 are respectively 45°C at the first gear, 50°C at the second gear, 55°C at the third gear and 60°C at the fourth gear.

[0038] Working principle:

[0039] Adjust the volume of the heating chamber 8:

[0040] The user rotates the upper cover 7 to adjust the angle of the upper cover 7 and the degree of overlap or separation between the upper cover 7 and the back plate 1, thereby changing the volume of the heating cavity 8 surrounded by the upper cover 7, the back plate 1 and the base 3, thereby obtaining different heating effects.

[0041] When the upper cover 7 is rotated to an angle of 56°, the upper cover 7, the back plate 1 and the base 3 form a heating chamber 8 with the largest volume, forming a surround heating state. When the user places his feet on the base 3, the heating chamber 8 completely wraps the user's feet.

[0042] When the rotation angle of the upper cover 7 is 0°, the upper cover 7, the back panel 1 and the base 3 form a heating chamber 8 with the smallest volume. At this time, the upper cover is hidden on the back of the back panel 1, which increases the flexibility of the whole machine and forms a surround heating state. The user places the feet on the base 3, and the heating chamber 8 only wraps a part of the user's feet. The user can freely adjust the rotation angle of the upper cover 7 and change the volume of the heating chamber 8, thereby setting different foot warming methods, which greatly improves the product experience effect.

[0043] Surround heating:

[0044] The user starts and adjusts the temperature of the graphene heating film 2 on the upper cover and the graphene heating film 2 on the base 3 at the same time through the temperature adjustment panel 6. If it is adjusted to the first level of 45°C, the graphene heating film 2 on the upper cover and the graphene heating film 2 on the base 3 generate heat together to form surround heating to achieve a uniform heating effect. It can also avoid the instability of the existing electric heater structure and the problem of side panels falling off due to shaking, and overcome the shortcomings of poor heating effect of the existing technology.

Claims

1. An electric heater, comprising a heating base, a back plate and an upper cover, Features: The back plate is arranged on the heating base, and the heating base includes a graphene heating film, a base and a reflecting plate. The graphene heating film is arranged in the base, and the graphene heating film is close to the upper end surface of the base. The reflecting plate is arranged in the inner cavity of the base and is located below the graphene heating film, and the reflecting plate is close to the lower end surface of the base. The upper cover is arranged on the base in a rotatable manner, and the upper cover, the back plate and the base together enclose a heating chamber, and the upper cover is rotated to adjust the volume of the heating chamber; The heating base further includes a thermal protection switch and a temperature sensor, the thermal protection switch and the temperature sensor are arranged in the base, the temperature measuring end of the temperature sensor is close to the graphene heating film, and the graphene heating film, the thermal protection switch and the temperature sensor are electrically connected; The upper cover comprises an upper cover body, a graphene heating film and a reflecting plate, wherein the graphene heating film is arranged in the inner cavity of the upper cover body, the graphene heating film is close to the lower end surface of the upper cover body, the reflecting plate is arranged in the inner cavity of the upper cover body and is located above the graphene heating film, and the reflecting plate is close to the upper end surface of the upper cover body; It also includes a blocking block, the back plate is provided with a mounting opening, a sliding groove is provided on the periphery of the mounting opening, the back plate is provided on the heating base, the upper cover body is provided with a rotating shaft, a slider is provided on the rotating shaft, the rotating shaft passes through the mounting opening, and the slider enters the sliding groove and slides along the sliding groove, the blocking block is detachably provided in the sliding groove, and the blocking block limits the sliding range of the slider, thereby limiting the rotation angle of the upper cover body; The rotation range of the upper cover body is 0-56°; It also includes a temperature adjustment panel, which is arranged on the base; The upper cover, the back plate and the heating base together form a heating chamber, and when the upper cover rotates, the upper cover adjusts the volume of the heating chamber; The adjustment gears of the temperature control panel are respectively 45°C at the first gear, 50°C at the second gear, 55°C at the third gear and 60°C at the fourth gear; When the upper cover rotates at an angle of 56°, the upper cover, the back plate and the base form a heating cavity with the largest volume, forming a surround heating state; When the upper cover rotates at an angle of 0°, the upper cover, the back plate and the base form a heating chamber with the smallest volume. At this time, the upper cover is hidden behind the back plate, forming a surround heating state. The user starts and adjusts the temperature of the graphene heating film on the upper cover and the graphene heating film on the base at the same time through the temperature control panel. When adjusted to the first level of 45°C, the graphene heating film on the upper cover and the graphene heating film on the base generate heat together to form surround heating.

2. The electric heater according to claim 1, Features: Also included is a deodorizing device, which is disposed in the base.

3. The electric heater according to claim 1, Features: The upper cover also includes a thermal protection switch, which is arranged in the upper cover body, and the graphene heating film is electrically connected to the thermal protection switch.

4. The electric heater according to claim 1, Features: The upper end surface of the upper cover body is provided with grooves at intervals to form a concave-convex surface.

5. The electric heater according to claim 1, Features: The sliding block is tightly attached to the inner wall of the sliding groove, and the sliding block and the sliding groove are interference fit.

6. The electric heater according to claim 3, Features: The graphene heating film, the thermal protection switch and the temperature sensor are electrically connected to the temperature control panel respectively.

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