Graphene heating device and blower

Abstract

The utility model discloses a graphene heating device and a blower. The graphene heating device comprises an inner support cylinder, a heat insulation cylinder and a graphene heating assembly connected between the inner support cylinder and the heat insulation cylinder. The graphene heating assembly comprises a plurality of graphene heating pieces which are evenly arranged in the circumferential direction. According to the utility model, the plurality of graphene heating sheets which are uniformly arranged in the circumferential direction are adopted to heat the airflow, so that the generated heat is fully conducted to the passing airflow, and the heat efficiency and the safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, and more specifically to a graphene heating device and a hair dryer. Background Art

[0002] Currently, hair dryers on the market generally use nickel-chromium alloy heating wires as heating elements. This type of heating wire generates large radiation after being energized, and the temperature is difficult to control. If it is not used properly during use, local short circuits and overheating may easily occur, and it may also cause open flames, posing a safety hazard. In addition, this type of heating wire is prone to surface oxidation after long-term use, resulting in reduced heating performance and a poor experience.

[0003] Therefore, in the current technology, graphene heating is used to replace traditional heating wires, which can better avoid local short circuits and overheating phenomena, and also better avoid safety hazards caused by open flames. For example, Chinese Patent No.: 202220518499.5 discloses a graphene heating device and a hair dryer with the device, including a graphene supporting tube, a high-temperature resistant ceramic insulating coating, a graphene heating coating, a radiator, a high-temperature resistant mica ring insulation layer and a heating element fixing part, wherein the radiator is sleeved on the outside of the heating element fixing part, the graphene supporting tube is sleeved on the outside of the radiator, the high-temperature resistant ceramic insulation coating is arranged on the outside of the graphene supporting tube, the graphene heating coating is arranged on the outside of the high-temperature resistant ceramic insulation coating, and the high-temperature resistant mica ring insulation layer is arranged on the outside of the graphene heating coating. Although this prior art uses graphene for heating, the graphene heating coating is arranged on the outer layer of the radiator for heating, and the heat generated by the graphene heating coating cannot be fully conducted to the radiator, and the heating efficiency is poor. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a graphene heating device and a hair dryer, which use a plurality of circumferentially evenly arranged graphene heating sheets to heat the airflow, thereby fully conducting the generated heat to the passing airflow, which can improve thermal efficiency and safety.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A graphene heating device comprises an inner support tube, a heat insulating tube and a graphene heating component connected between the inner support tube and the heat insulating tube; the graphene heating component comprises a plurality of graphene heating sheets uniformly arranged in the circumferential direction.

[0007] This technology uses graphene as a heating component, which can take advantage of the high thermal efficiency, stable temperature regulation, low voltage operation and far-infrared health care effects of graphene heating, thereby achieving the purpose of improving heating efficiency and safety. Among them, the air duct of the hair dryer is formed between the inner support tube and the insulation tube, and multiple graphene heating sheets are evenly arranged in the duct in the circumferential direction, which can fully conduct the heat generated by the graphene heating sheets to the passing airflow, and can further improve the thermal efficiency.

[0008] In a preferred technical solution, the graphene heating sheet is in the shape of a fan blade; one side of the graphene heating sheet is parallel to the axis of its body, and the other side forms a spiral angle relative to the axis of its body. The fan-shaped graphene heating sheet used in this technology can make the airflow have a larger contact area with the graphene heating sheet when passing through the air duct, and form a spiral airflow, which can more efficiently transfer the heat generated by the graphene heating sheet to the airflow.

[0009] In a preferred technical solution, the spiral angle is 70° to 105°. The above spiral angles are helpful to form a spiral airflow.

[0010] In a preferred technical solution, the shape of the graphene heating sheet is a right-angled trapezoid. The right-angled trapezoidal graphene heating sheet is easy to manufacture and simple to assemble.

[0011] In a preferred technical solution, the diameter of the first end of the device is larger than the diameter of the second end of the device. The structure in which the diameter of the first end is larger than the second end makes it easier for the airflow to form a spiral airflow when passing through, further improving thermal efficiency.

[0012] In a preferred technical solution, the graphene heating sheet is equipped with a temperature sensor, which is used to be electrically connected to the main board of the hair dryer and can send the temperature of the graphene heating sheet to the main board, thereby achieving precise airflow temperature control.

[0013] In a preferred technical solution, the number of graphene heating sheets is at least 2. When the number of graphene heating sheets is small, such as 2 to 4, a heating sheet with a larger surface area can be used to improve the heating efficiency. The preferred number of graphene heating sheets is 6, which not only leaves enough space for airflow to pass through, but also ensures heating efficiency.

[0014] A hair dryer comprises a graphene heating device as in any of the above technical solutions.

[0015] The above-mentioned hair dryer uses graphene as a heating component, and can utilize the advantages of graphene heating such as high thermal efficiency, stable temperature regulation, low voltage operation and far-infrared health care effect, so as to achieve the purpose of improving heating efficiency and safety; at the same time, multiple graphene heating sheets are evenly arranged circumferentially in the air duct, which can fully conduct the heat generated by the graphene heating sheets to the passing airflow, thereby further improving the thermal efficiency.

[0016] In a preferred technical solution, the hair dryer also includes an outer shell and an inner shell. The inner shell is arranged inside the outer shell, and the graphene heating device is arranged on the inner shell. The structure is simple and the assembly is convenient. The positive and negative electrodes of each graphene heating sheet are electrically connected to the main board of the hair dryer. The main board can flexibly adjust the airflow temperature by closing or opening some graphene heating sheets.

[0017] It can be seen from the above technical solution that compared with the prior art, the utility model has the following beneficial effects: the utility model uses graphene as a heating component, and can utilize the advantages of graphene heating such as high thermal efficiency, stable temperature regulation, low voltage operation and far-infrared health care effect, thereby achieving the purpose of improving heating efficiency and safety. At the same time, a design of arranging multiple graphene heating sheets uniformly in the circumference of the air duct is adopted, which can fully conduct the heat generated by the graphene heating sheets to the passing airflow, and can further improve the thermal efficiency.

[0018] In addition, other advantages of the present invention will be given in the following description, and some will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the end face of the utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the graphene heating sheet of the utility model.

[0023] Figure 4 This is another structural schematic diagram of the graphene heating sheet of the utility model.

[0024] Figure 5The utility model is a schematic diagram of the exploded structure of the hair dryer.

[0025] Explanation of the reference numerals: 1. inner support tube; 2. heat insulation tube; 3. graphene heating sheet; 31. temperature sensor; 100. graphene heating device; 101. inner shell; 102. front shell; 103. rear shell. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] Reference Figure 1-5 A graphene heating device according to an embodiment of the utility model is described.

[0029] In one embodiment, Figure 1-2 As shown, a graphene heating device 100 includes an inner support tube 1, an insulation tube 2, and a graphene heating component connected between the inner support tube 1 and the insulation tube 2; the graphene heating component includes a plurality of graphene heating sheets 3 uniformly arranged in the circumferential direction.

[0030] Among them, the air duct of the hair dryer is formed between the inner support tube 1 and the insulation tube 2, and multiple graphene heating sheets 3 are evenly arranged in the duct in the circumferential direction, which can fully conduct the heat generated by the graphene heating sheets 3 to the passing airflow, and can further improve the thermal efficiency. As a heating component, graphene has the advantages of high thermal efficiency, stable temperature regulation, low voltage operation and far-infrared health care effect, and can achieve the purpose of improving heating efficiency and safety.

[0031] In the above embodiment, one side of each graphene heating sheet 3 is fixedly mounted on the outer wall of the inner support tube 1, and the other side is fixedly mounted on the inner wall of the insulation tube 2. The insulation tube can be made of glass fiber, insulation ceramics and other materials.

[0032] In specific implementation, the inner support tube 1 may be provided with a plurality of first mounting grooves evenly distributed in the circumferential direction, and the inner wall of the heat insulating tube 2 may be provided with a plurality of second mounting grooves corresponding to the first mounting grooves. During assembly, the graphene heating sheet 3 may be inserted along the first mounting grooves and the second mounting grooves, and the assembly is convenient and quick. Alternatively, welding or other methods may be used to assemble the plurality of graphene heating sheets 3 between the inner support tube 1 and the heat insulating tube 2.

[0033] In one implementation of this embodiment, Figure 3 As shown, the graphene heating sheet 3 is in the shape of a fan blade; one side of the graphene heating sheet 3 is parallel to the axis of its body, and the other side forms a spiral angle relative to the axis of its body. This embodiment uses a fan-shaped graphene heating sheet 3, which can make the airflow have a larger contact area with the graphene heating sheet 3 when passing through the air duct, and form a spiral airflow, which can more efficiently transfer the heat generated by the graphene heating sheet 3 to the airflow.

[0034] In this embodiment, the spiral angle is 70° to 105°, which helps to form a spiral airflow, increase the contact area between the airflow and the heating plate, and improve thermal efficiency.

[0035] In another implementation of this embodiment, the graphene heating sheet 3 is in the shape of a right-angled trapezoid. The right-angled trapezoid heating sheet is easy to manufacture and simple to assemble.

[0036] Both of the above two implementations can realize this embodiment, and it is preferred to use a fan-shaped heating sheet, which has higher thermal efficiency.

[0037] In this embodiment, the diameter of the first end of the graphene heating device 100 is greater than the diameter of the second end of the device. The structure that the diameter of the first end is greater than the second end makes it easier for the airflow to form a spiral airflow when passing through, further improving the thermal efficiency. When the graphene heating device is installed on a hair dryer, the first end can be the end close to the air outlet of the hair dryer, and the second end can be the end close to the air inlet of the hair dryer.

[0038] In this embodiment, if Figure 4 As shown, the graphene heating sheet 3 has a built-in temperature sensor 31, which is used to be electrically connected to the mainboard of the hair dryer and can send the temperature of the graphene heating sheet 3 to the mainboard, thereby achieving precise airflow temperature control.

[0039] In this embodiment, the number of graphene heating sheets 3 is at least 2. When the number of graphene heating sheets 3 is small, such as 2 to 4, a heating sheet with a larger surface area can be used to improve the heating efficiency. The preferred number of graphene heating sheets 3 is 6, which not only leaves enough space for airflow to pass through, but also ensures heating efficiency.

[0040] In one embodiment, Figure 5 As shown, the utility model provides a hair dryer, which includes a graphene heating device 3 as in any of the above embodiments.

[0041] The above-mentioned hair dryer uses graphene as a heating component, and can utilize the advantages of graphene heating such as high thermal efficiency, stable temperature regulation, low voltage operation and far-infrared health care effect, so as to achieve the purpose of improving heating efficiency and safety; at the same time, multiple graphene heating sheets 3 are evenly arranged in the air duct in a circumferential direction, which can fully conduct the heat generated by the graphene heating sheets to the passing airflow, thereby further improving the thermal efficiency of the hair dryer.

[0042] In this embodiment, the hair dryer also includes an outer shell and an inner shell 101. The inner shell is arranged inside the outer shell, and the graphene heating device 100 is arranged on the inner shell. The structure is simple and the assembly is convenient. Among them, the positive and negative poles of each graphene heating sheet 3 are electrically connected to the main board of the hair dryer. The main board can flexibly adjust the air flow temperature by closing or opening some graphene heating sheets.

[0043] In one implementation of this embodiment, the housing includes a front housing 102 and a rear housing 103, which are connected and assembled together by a spiral buckle structure to form a housing. This implementation has a simple structure, is easy to assemble, and is very convenient to disassemble, and has very good maintainability. In specific implementation, the housing may also be assembled in other ways, such as being composed of two left and right half shells.

[0044] Other structures and operations of the graphene heating device and the hair dryer according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of this specification, the reference terms "embodiment", "specific embodiment", "example" and the like mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention.

[0047] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined with each other in any one or more embodiments or examples in a suitable manner without interference or contradiction.

Claims

1. A graphene heating device, characterized in that: The device comprises an inner support tube, a heat insulation tube and a graphene heating component connected between the inner support tube and the heat insulation tube; The graphene heating component comprises a plurality of graphene heating sheets which are uniformly arranged in the circumferential direction.

2. A graphene heating device according to claim 1, characterized in that: The shape of the graphene heating sheet is fan-shaped; One side of the graphene heating sheet is parallel to the axis of its body, and the other side forms a spiral angle with respect to the axis of its body.

3. A graphene heating device according to claim 2, characterized in that: The helix angle is 70° to 105°.

4. A graphene heating device according to claim 1, characterized in that: The shape of the graphene heating sheet is a right-angle trapezoid.

5. A graphene heating device according to any one of claims 2 to 4, characterized in that: The diameter of the first end of the device is greater than the diameter of the second end of the device.

6. A graphene heating device according to claim 1, characterized in that: The graphene heating sheet is equipped with a temperature sensor, and the temperature sensor is used to be electrically connected to the mainboard of the hair dryer.

7. A graphene heating device according to claim 1, characterized in that: The number of the graphene heating sheets is at least 2.

8. A graphene heating device according to claim 7, characterized in that: The number of the graphene heating sheets is 6.

9. A hair dryer, characterized in that: The hair dryer comprises the graphene heating device as described in any one of claims 1 to 8.

10. A hair dryer according to claim 9, characterized in that: The hair dryer also includes an outer shell and an inner shell, the inner shell is arranged inside the outer shell, the graphene heating device is arranged on the inner shell, and the positive and negative electrodes of each graphene heating sheet are electrically connected to the mainboard of the hair dryer.

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