Axial flow fan with heating function

Abstract

The utility model relates to the field of fans, in particular to an axial flow fan with a heating function, which comprises a motor and an axial flow fan connected onto a motor shaft. The device is characterized in that a graphene heating film is fixed on a blade of the axial flow fan; the graphene heating film can be connected in series with an external power supply through the motor, and is heated through current accessed by the external power supply; and / or a permanent magnet is also included, and a closed loop is constructed on the graphene heating film; when the motor drives the axial flow fan to rotate, the graphene heating film performs magnetic induction line cutting motion in a magnetic field of the permanent magnet, so that induction current is generated in the graphene heating film for heating. According to the axial flow fan, the graphene heating films are fixed to the blades of the axial flow fan, the graphene heating films can emit heat after being powered on, and the temperature of the blades can be increased; the method is suitable for the cold environment in northern winter and protects the leaves from cracking.

Description

Technical Field

[0001] The utility model relates to the field of fans, in particular to an axial flow fan with a heating function. Background Art

[0002] Large fans are widely used in industrial and agricultural production. Whether they are used to blow cool air to people in the summer or to exhaust exhaust gas and deliver fresh air to factory workshops in the cold north, you can always see them busy. For commercial use, the outdoor unit of central air conditioners generally blows air from the top, with the fan blades exposed. In the practice of fan use, it is found that the surface of the fan blades freezes in the cold north in winter, snowy or freezing rainy days, causing the fan to run unbalancedly and crack during use. Summary of the invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide an axial flow fan with a heating function.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] An axial flow fan with a heating function comprises a motor and an axial flow fan connected to the motor shaft; the characteristics are: a graphene heating film is fixed on the blades of the axial flow fan; the graphene heating film can be connected in series with an external power supply through the motor, and generate heat through the current input by the external power supply; and / or it also includes a permanent magnet, and a closed loop is constructed on the graphene heating film; when the motor drives the axial flow fan to rotate, the graphene heating film cuts the magnetic flux lines in the magnetic field of the permanent magnet, thereby generating induced current and heating in the graphene heating film.

[0006] The utility model adopts the above-mentioned technical scheme, which relates to an axial flow fan with a heating function. The axial flow fan with a heating function has a graphene heating film fixed on the blades of the axial flow fan. The graphene heating film can generate heat after being energized, and the temperature of the blades will increase. It is suitable for the cold environment in the north in winter and protects the blades from cracking.

[0007] Specifically, the graphene heating film can be powered on and heated in one or a combination of the following two ways:

[0008] 1. The graphene heating film is directly connected to an external power source, such as by connecting it in series with a motor, so as to achieve power-on heating.

[0009] 2. The graphene heating film is in the magnetic field of the permanent magnet and cuts the magnetic flux lines when the fan is running. This can generate an induced current in the graphene heating film and achieve heating when powered on.

[0010] In the first implementation, an electrical connection port is constructed on the graphene heating film, and the rotor coil of the motor is connected to each graphene heating film through a wire inserted into the motor shaft. In this solution, the wires are inserted into the motor shaft, and the wire access section is connected to the motor rotor. As the motor rotor and the motor shaft rotate together, problems such as wire entanglement when the motor is running can be avoided. In a specific solution, the motor shaft is provided with a terminal at the root of each blade of the axial flow fan, and the electrical connection port on the graphene heating film is connected to the terminal at the root of the blade; this solution can ensure that the wires are completely hidden inside the motor shaft.

[0011] In the second implementation scheme, the permanent magnet is an annular magnet, and a through hole is provided at the center of the annular magnet; the motor shaft of the motor passes through the through hole of the annular magnet and is connected to the axial flow fan. In this scheme, the graphene heating film on the axial flow fan is in the magnetic field formed by the annular magnet. The graphene heating film is connected end to end to form a closed loop, or the inside of the graphene heating film is constructed into a closed loop. When the fan is running, an induced current is generated in the closed loop of the graphene heating film to generate heat, and the temperature of the blades will increase.

[0012] In a further embodiment, the graphene heating film is fixed on the back pressure surface of the blade, the wind resistance of the back pressure surface is small, and the graphene heating film is not easy to be damaged or fall off. In a specific embodiment, the graphene heating film is glued and fixed on the back pressure surface of the blade, or a groove is constructed on the back pressure surface of the blade, and the graphene heating film is glued and fixed in the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of an axial flow fan with heating function.

[0014] Figure 2 This is the axial view of an axial flow fan with heating function.

[0015] Figure 3 Schematic diagram of the structure of a permanent magnet. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection 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.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] like Figures 1 to 3As shown, this embodiment relates to an axial flow fan with a heating function, including a motor 1, and an axial flow fan 2 connected to the shaft of the motor 1. A graphene heating film 3 is fixed on the blades of the axial flow fan 2. The graphene heating film 3 can be connected in series with an external power supply through the motor 1, and generate heat through the current connected to the external power supply. And / or it also includes a permanent magnet 4, and a closed circuit is constructed on the graphene heating film 3. When the motor 1 drives the axial flow fan 2 to rotate, the graphene heating film 3 cuts the magnetic flux lines in the magnetic field of the permanent magnet 4, thereby generating induced current heating in the graphene heating film 3. In a preferred embodiment, the graphene heating film 3 is fixed on the back pressure surface of the blade, the wind resistance of the back pressure surface is small, and the graphene heating film 3 is not easy to be damaged or fall off. In a specific embodiment, the graphene heating film 3 is glued and fixed on the back pressure surface of the blade, or a groove is constructed on the back pressure surface of the blade, and the graphene heating film 3 is glued and fixed in the groove.

[0022] The axial flow fan with heating function has a graphene heating film 3 fixed on the blades of the axial flow fan 2. The graphene heating film 3 can generate heat after being powered on, and the temperature of the blades will increase. It is suitable for the cold environment in the north in winter and protects the blades from cracking.

[0023] Specifically, the graphene heating film 3 can achieve heating when powered on by one of the following two methods or a combination thereof: 1. The graphene heating film 3 is directly connected to an external power source, such as by being connected in series with the motor 1, so as to achieve heating when powered on.

[0024] 2. The graphene heating film 3 is in the magnetic field of the permanent magnet 4 and cuts the magnetic flux lines when the fan is running. This can generate an induced current in the graphene heating film 3 to achieve heating.

[0025] In the first implementation scheme, an electrical connection port is constructed on the graphene heating film 3, and the rotor coil of the motor 1 is connected to each graphene heating film 3 through a wire inserted into the shaft of the motor 1. The scheme here inserts the wire into the shaft of the motor 1, and the wire access section is connected to the rotor of the motor 1. As the rotor of the motor 1 and the shaft of the motor 1 rotate together, problems such as wire entanglement when the motor 1 is running can be avoided. In a specific scheme, the shaft of the motor 1 is provided with a terminal at the root of each blade of the axial fan 2, and the electrical connection port on the graphene heating film 3 is connected to the terminal at the root of the blade. This scheme can ensure that the wires are completely hidden inside the shaft of the motor 1.

[0026] In the second implementation scheme, the permanent magnet 4 is an annular magnet, and a through hole 41 is provided at the center of the annular magnet. The motor 1 shaft of the motor 1 passes through the through hole 41 of the annular magnet and is connected to the axial flow fan 2. In this scheme, the graphene heating film 3 on the axial flow fan 2 is in the magnetic field formed by the annular magnet. The graphene heating film 3 is connected end to end to form a closed loop, or the inside of the graphene heating film 3 is constructed into a closed loop. When the fan is running, an induced current is generated in the closed loop of the graphene heating film 3 to generate heat, and the temperature of the blades will increase.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. An axial flow fan with a heating function, comprising a motor (1), and an axial flow fan (2) connected to the shaft of the motor (1); characterized in that: A graphene heating film (3) is fixed on the blades of the axial flow fan (2); the graphene heating film (3) can be connected in series with an external power supply via the motor (1) and generate heat through the current input by the external power supply; And / or it also includes a permanent magnet (4), and a closed circuit is constructed on the graphene heating film (3); when the motor (1) drives the axial flow fan (2) to rotate, the graphene heating film (3) cuts the magnetic flux lines in the magnetic field of the permanent magnet (4), thereby generating induced current and heating in the graphene heating film (3).

2. The axial flow fan with heating function according to claim 1, characterized in that: The graphene heating film (3) is provided with an electrical connection port, and the rotor coil of the motor (1) is connected to each graphene heating film (3) via an electric wire inserted into the shaft of the motor (1).

3. The axial flow fan with heating function according to claim 2, characterized in that: The shaft of the motor (1) is provided with a wiring terminal at the root of each blade of the axial flow fan (2), and the electrical connection port on the graphene heating film (3) is connected to the wiring terminal at the root of the blade.

4. The axial flow fan with heating function according to claim 1, characterized in that: The permanent magnet (4) is an annular magnet, and a through hole (41) is provided at the center of the annular magnet; the motor (1) shaft of the motor (1) passes through the through hole (41) of the annular magnet and is connected to the axial flow fan (2).

5. The axial flow fan with heating function according to claim 1, characterized in that: The graphene heating films (3) are connected end to end to form a closed loop, or the inside of the graphene heating film (3) forms a closed loop.

6. The axial flow fan with heating function according to claim 1, characterized in that: The graphene heating film (3) is fixedly connected to the back pressure surface of the blade.

7. The axial flow fan with heating function according to claim 6, characterized in that: The graphene heating film (3) is glued and fixed on the back pressure surface of the blade, or a groove is constructed on the back pressure surface of the blade, and the graphene heating film (3) is glued and fixed in the groove.

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