Power fan assembly based on heating power film

Abstract

The utility model discloses a power fan assembly based on a heating power film, and relates to the technical field of fan structures, the power fan assembly comprises a shell, a fan assembly, a heating structure and a temperature control assembly, the shell is provided with an air duct; the fan assembly is arranged at an inlet of the air duct; the heating structure is located at an outlet of the air duct, the heating structure comprises two side plates arranged in parallel, a mounting plate horizontally connected between the two side plates, and heating power films vertically mounted on the mounting plate in parallel at intervals, and the heating power films are vertically and symmetrically arranged relative to the mounting plate; the temperature control assembly is arranged on the shell, electrically connected with the heating power film and used for adjusting the temperature of the heating power film. The power fan assembly based on the heating power film solves the technical problems that in the prior art, due to the fact that a PTC ceramic heating element is used in a fan structure, the production technology is complex, cost is high, and the failure rate is high.

Description

Technical Field

[0001] This utility model relates to the field of fan structure technology, and more specifically, to a power fan assembly based on a heating power film. Background Technology

[0002] Currently, consumers generally choose space heaters to heat their indoor environment in winter. Traditional space heaters typically use PTC ceramic heating elements. PTC ceramic heating elements utilize a ceramic body as a support plate. These elements must be integrated with molded aluminum or other metal parts to form a complete heating assembly, resulting in a complex manufacturing process and high cost.

[0003] Chinese invention patent CN103987139B discloses a heating element for a fan heater. This heating element includes a mica sheet, a heating wire, and a support base. The mica sheet is annular, and the heating wire is spirally wound around the mica sheet and extends radially outward. Multiple mica support connecting pieces are provided on the inner surface of the mica sheet, and the support base is connected to the mica sheet through these support connecting pieces. By making the mica sheet annular and winding the heating wire around it and extending it outward, the contact area between the heating wire and the mica is minimized, thus ensuring maximum contact between the heating wire and the air. This increases the contact area between the air and the heating wire during normal operation of the fan heater, thereby improving its working efficiency.

[0004] However, the ceramic heating element in the above-mentioned technical solution is made by sintering a slurry, which makes it prone to breakage in environments of impact and vibration. Furthermore, the ceramic heating element may crack during rapid cooling. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a power fan assembly based on a heating power film, so as to solve the technical problems of complex manufacturing process, high cost and high failure rate of PTC ceramic heating element in the existing fan structure.

[0006] To address the above problems, this utility model provides a power fan assembly based on a heating power film, comprising:

[0007] A housing, on which air ducts are provided;

[0008] The fan assembly is located at the inlet of the air duct;

[0009] A heating structure is located at the outlet of the air duct, and the heating structure includes two parallel side plates, a mounting plate horizontally connected between the two side plates, and a heating power film vertically and parallelly installed on the mounting plate, and the heating power film is symmetrically arranged about the mounting plate.

[0010] A temperature control component is disposed on the housing, the temperature control component is electrically connected to the heating power film, and the temperature control component is used to adjust the temperature of the heating power film.

[0011] Furthermore, the heating power film includes a first vertical film and a first inclined film that are vertically and symmetrically mounted on the mounting plate, and the side of the first inclined film close to the first vertical film is connected at the intersection of the first vertical film and the mounting plate.

[0012] Furthermore, the angle between the first vertical membrane and the first inclined membrane ranges from 25 to 35 degrees.

[0013] Furthermore, both the first vertical film and the first inclined film include a substrate and a heating layer, with a barrier layer provided between the substrate and the heating layer; a polyurethane layer and an acrylate layer are provided between the substrate and the barrier layer; the polyurethane layer is first formed on the substrate, and then the acrylate layer is formed; the barrier layer is formed on the substrate by a sputtering process.

[0014] Furthermore, the housing includes a base and a reflector plate arranged horizontally at intervals, and a first side fixing plate and a second side fixing plate vertically and symmetrically connected to the outer ends of the base and the reflector plate. The base is configured as a wave-shaped structure, and the reflector plate includes an arc-shaped plate adapted to cover one side above the fan assembly and a support plate supporting the temperature control assembly. The arc-shaped plate and the support plate are integrally connected.

[0015] Furthermore, the fan assembly includes a fan horizontally mounted directly above the base, a motor mounted on the outside of the second side fixing plate, and a bushing mounted on the first side fixing plate. The central axes of the fan, the motor, and the bushing coincide. The output shaft of the motor passes through the first side fixing plate and is connected to one end of the fan, and the bushing is connected to the other end of the fan.

[0016] Furthermore, the temperature control assembly includes a temperature controller and a temperature control housing mounted on the reflector. The temperature controller is electrically connected to the heating power film and is located inside the temperature control housing.

[0017] Furthermore, the fan is an axial flow fan.

[0018] Furthermore, the thermostat is a SEKI ST-22 series.

[0019] Furthermore, the first side fixing plate and the second side fixing plate are provided with folded edge structures on the sides of their opposite sides.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] The power fan assembly based on a heating power film described in this application consists of four parts: a housing, a fan assembly, a heating structure, and a temperature control component. The housing's air duct structure adopts a "front-end air supply + end-end heating" layout. The fan assembly forms a directional airflow at the inlet, and the heating structure at the outlet conforms to the thermodynamic convection heat transfer principle. When air flows through the heating power film, the film generates heat after being energized, heating the air. Because the heating power film is symmetrically arranged vertically, air can absorb heat evenly as it passes through the film area. Furthermore, the vertically spaced heating power films form multi-stage heating channels, allowing for multiple cross-heating of the airflow. The heating power film structure is simple, low-cost, and highly stable. The temperature control component is located on the housing and electrically connected to the heating power film, enabling real-time monitoring of the film's temperature. This power fan assembly based on a heating power film solves the technical problems of existing fan structures using PTC ceramic heating elements, which suffer from complex manufacturing processes, high costs, and high failure rates. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one direction of the power fan assembly based on the heating power film in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of another direction of the power fan assembly based on the heating power film in an embodiment of this utility model;

[0024] Figure 3 This is a top view of the power fan assembly based on a heating power film in an embodiment of this utility model.

[0025] Figure 4 This is an exploded structural diagram of the power fan assembly based on the heating power film in an embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the heating power film in an embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the specific structure of the first vertical membrane and the first inclined membrane in the embodiments of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Shell;

[0030] 11-Base; 12-First side fixing plate; 13-Second side fixing plate; 14-Reflector;

[0031] 2- Fan assembly;

[0032] 21-Fan; 22-Motor; 23-Shaft sleeve;

[0033] 3-Heating structure;

[0034] 31-Side plate; 32-Mounting plate; 33-Heating power film; 331-First vertical film; 332-First inclined film;

[0035] 3311 - Substrate; 3312 - Heating layer; 3313 - Polyurethane layer; 3314 - Barrier layer; 3315 - Acrylic layer;

[0036] 4-Temperature control components;

[0037] 41-Thermostat; 42-Thermostat housing; 421-Heat dissipation hole. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "first," "second," etc., are used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] Please see Figure 1-6 As shown, this utility model embodiment provides a power fan assembly based on a heating power film. The power fan assembly includes a housing 1, a fan assembly 2, a heating structure 3, and a temperature control assembly 4, wherein:

[0043] The housing is the framework of the entire assembly, serving as a support carrier to bear and protect other components. The housing 1 is equipped with an air duct to guide airflow from the inlet to the outlet, forming a flow channel.

[0044] The fan assembly 2 is located at the inlet of the air duct and is used to provide airflow and drive air flow. The fan blades are rotated by the motor, thereby drawing external air into the air duct.

[0045] The heating structure 3 is located at the outlet of the air duct and is used to heat the passing airflow. To ensure that the airflow is heated evenly and to avoid localized excessively high or low temperatures, the heating structure 3 in this embodiment includes two side plates 31, a mounting plate 32, and a heating power film 33. The two side plates 31 are arranged vertically and parallel to each other, and the mounting plate 32 is horizontally connected between the two side plates 31. The heating power film 33 is vertically and parallel to each other and spaced on the mounting plate 32, and is symmetrically arranged about the mounting plate 32. As the core heating component, the heating power film 33 converts electrical energy into heat energy to heat the air.

[0046] The temperature control component 4 is installed on the housing 1. The temperature control component 4 is electrically connected to the heating power film 33 and is used to adjust the temperature of the heating power film 33. In this way, the structure has functions such as uniform heating, improved energy efficiency, and safety protection through the precision of temperature control.

[0047] Therefore, the power fan assembly in this technical solution consists of four parts: housing 1, fan assembly 2, heating structure 3, and temperature control assembly 4. The air duct structure of housing 1 adopts a "front-end air supply + terminal heating" layout. Fan assembly 2 forms a directional airflow at the inlet, and the heating structure 3 is set at the outlet, which conforms to the thermodynamic convection heat transfer principle. When air flows through the heating power membrane 33, the heating power membrane 33 generates heat after being energized, thus heating the air. Since the heating power membrane 33 is symmetrically arranged vertically, the air can absorb heat evenly when passing through the area of ​​the heating power membrane 33. In addition, the heating power membrane 33 is vertically spaced to form a multi-stage heating channel, so that the airflow can be cross-heated multiple times when passing through. The temperature control assembly 4 is located on housing 1 and is electrically connected to the heating power membrane 33. It can monitor the temperature of the heating power membrane 33 in real time.

[0048] Specifically, please refer to Figure 5 As shown, the heating power film 33 includes multiple assembled first vertical films 331 and first inclined films 332. The first vertical films 331 and first inclined films 332 are vertically and symmetrically mounted on the mounting plate 32, and the side of the first inclined film 332 closest to the first vertical film 331 is connected to the intersection of the first vertical film 331 and the mounting plate 32. In this way, the first vertical films 331 and first inclined films 332 form a combination similar to an "L" or "V" shape in space. Air will form a zigzag flow path between the first vertical films 331 and first inclined films 332, so that the contact time between the air and the heating film is longer. When the air flows along the surface of the first vertical films 331 and first inclined films 332, it is heated.

[0049] It should be noted that the shape of the heating power film 33 can be determined according to the actual working conditions, and the arrangement of the heating power film 33 can be horizontal, vertical and other positions. This embodiment does not impose too many restrictions on the installation position of the heating power film 33.

[0050] Specifically, please refer to Figure 5 As shown, the angle between the first vertical membrane 331 and the first inclined membrane 332 ranges from 25 to 35 degrees. When air flows through the heating power membrane 33, the angle between the first vertical membrane 331 and the first inclined membrane 332 guides the direction of airflow. Due to the inclination angle of the first inclined membrane 332, air is guided to flow along the surface of the first inclined membrane 332 while passing through the first vertical membrane 331, enabling more uniform heat absorption.

[0051] Specifically, please refer to Figure 5 , 6 As shown, both the first vertical film 331 and the first inclined film 332 include a substrate 3311 and a heating layer 3312, with a barrier layer 3314 between the substrate 3311 and the heating layer 3312; a polyurethane layer 3313 and an acrylate layer 3315 are provided between the substrate 3311 and the barrier layer 3314; the polyurethane layer 3313 is first formed on the substrate 3311, and then the acrylate layer 3315 is formed; the barrier layer 3314 is formed on the substrate 3311 by a sputtering process.

[0052] Specifically, in the embodiments of this utility model, the first vertical film 331 and the first inclined film 332 have the same structure, both including a substrate 3311 and a heating layer 3312, with a barrier layer 3314 between the substrate 3311 and the heating layer 3312; a polyurethane layer 3313 and an acrylate layer 3315 are provided between the substrate 3311 and the barrier layer 3314; the polyurethane layer 3313 is first formed on the substrate 3311, and then the acrylate layer 3315 is formed; the barrier layer 3314 is formed on the substrate 3311 using a target material containing silicon through a sputtering process; the heating layer 3312 is formed by sputtering.

[0053] It should be noted that the sputtering target material used in the heating layer 3312 includes one or more of the following: indium tin oxide, antimony tin oxide, gallium-doped zinc oxide, tin-doped zinc oxide, and aluminum-doped zinc oxide. This is also existing technology and will not be described in detail here.

[0054] Specifically, please refer to Figure 3 , 4 As shown, the housing 1 includes a base 11, a first side fixing plate 12, a second side fixing plate 13, and a reflector 14, wherein:

[0055] The base 11 and the reflector 14 are horizontally spaced vertically. The first side fixing plate 12 and the second side fixing plate 13 are vertically parallel and symmetrically connected to the outer ends of the base 11 and the reflector 14. The base 11 is configured as a wave-shaped structure. The reflector 14 includes an integrally connected arc plate and a support plate. The arc plate is suitable for covering the upper side of the fan assembly 2, and the support plate is used to support the temperature control assembly 4.

[0056] Specifically, in the embodiments of this utility model, the housing 1 is composed of a base 11, a first side fixing plate 12, a second side fixing plate 13, and a reflector plate 14. This combined structure provides stable shell support for the entire power fan assembly. The base 11 and the reflector plate 14 are horizontally spaced vertically. This layout creates a certain spatial hierarchy within the housing, which is beneficial for airflow and heat distribution within the housing. The first side fixing plate 12 and the second side fixing plate 13 are vertically parallel and symmetrically connected to the outer ends of the base 11 and the reflector plate 14, serving to fix and support, enhancing the overall structural stability of the housing, ensuring the stability of the housing's shape and position during operation, and preventing deformation of the housing due to external forces or internal airflow. The base 11 is designed with a corrugated structure, which can better conduct heat to the surrounding environment, reduce the temperature of the base 11 itself, and thus improve the thermal stability of the entire assembly. The arc-shaped plate of the reflector plate 14 can also reflect heat to a certain extent, allowing more heat to concentrate in the air heating area within the air duct, improving heat utilization efficiency.

[0057] Specifically, please refer to Figure 3 , 4 As shown, the fan assembly 2 includes a fan 21, a motor 22, and a bushing 23. The fan 21 is horizontally mounted directly above the base 11. The motor 22 is mounted on the outside of the second side fixing plate 13. The bushing 23 is mounted on the first side fixing plate 12. The central axes of the fan 21, the motor 22, and the bushing 23 coincide. The output shaft of the motor 22 passes through the first side fixing plate 12 and is connected to one end of the fan 21. The bushing 23 is connected to the other end of the fan 21.

[0058] Specifically, the fan 21 is horizontally installed directly above the base 11. This layout matches the air intake direction of the fan 21 with the corrugated structure of the base 11, which facilitates smooth airflow. At the same time, the horizontally installed fan 21 reduces vibration and noise caused by gravity, improving the operational stability of the fan.

[0059] The motor 22 and the fan 21 operate in relatively independent spaces, preventing the motor 22 from being affected by the high temperature and vibration generated by the fan 21 during operation. This is beneficial for the heat dissipation of the motor 22 and extends its service life. The bushing 23 is mounted on the first side fixing plate 12, providing support and positioning for the fan 21 shaft and ensuring the stability of the fan 21 during operation. The presence of the bushing 23 reduces the shaking of the fan 21 shaft and reduces the additional energy loss caused by shaft instability.

[0060] Specifically, please refer to Figure 2 As shown, the temperature control assembly 4 includes a temperature controller 41 and a temperature control housing 42. The temperature control housing 42 is mounted on the reflector 14. The temperature controller 41 is electrically connected to the heating power film 33 and is located inside the temperature control housing 42.

[0061] In this embodiment, the temperature control component 4 is stably supported on the support plate of the reflector 14 and can accurately sense the temperature change of the heating power film 33. When the temperature is too high, the temperature control component 4 can adjust the power of the heating power film 33 in time to reduce heat generation; when the temperature is too low, it can increase the power to ensure that the air can be heated to a suitable temperature.

[0062] Specifically, in the specific technical solution of this embodiment, the fan 21 is an axial flow fan. The structure of an axial flow fan is relatively simple, mainly composed of an impeller, casing, motor, and other components. Its impeller is a straight plate or airfoil shape, with a small number of blades and a compact structure. This simple structural design makes the axial flow fan easier to manufacture and maintain, reducing production costs and maintenance difficulty.

[0063] Specifically, the temperature controller 41 is a SEKI ST-22 series model. The SEKI ST-22 series temperature controllers feature superior thermal response performance, enabling them to quickly detect temperature changes. When the temperature reaches the set value, the temperature controller can quickly activate and cut off the circuit to prevent overheating. This rapid response characteristic is crucial for protecting critical components such as the heating element, effectively preventing equipment damage or safety hazards caused by excessive temperature.

[0064] In addition, the surface of the temperature control housing 42 is provided with heat dissipation holes 421 to dissipate the heat generated by the temperature controller 41 and ensure the safe use of the temperature controller 41.

[0065] Please see Figure 4As shown, in a specific embodiment of this utility model, the first side fixing plate 12 and the second side fixing plate 13 have folded edge structures around their opposite sides. These folded edge structures serve as positioning references during installation. When the first side fixing plate 12 and the second side fixing plate 13 are installed onto the housing 1, the folded edge structures provide precise positioning, ensuring accurate relative positions between the fixing plates and other components. This precise positioning helps improve the assembly accuracy of the entire assembly and reduces performance degradation or malfunctions caused by installation errors.

[0066] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A heat-generating power film based power fan assembly, characterized by, include: A housing, on which air ducts are provided; The fan assembly is located at the inlet of the air duct; A heating structure is located at the outlet of the air duct, and the heating structure includes two parallel side plates, a mounting plate horizontally connected between the two side plates, and a heating power film vertically and parallelly installed on the mounting plate, and the heating power film is symmetrically arranged about the mounting plate. A temperature control component is disposed on the housing, the temperature control component is electrically connected to the heating power film, and the temperature control component is used to adjust the temperature of the heating power film.

2. The power fan assembly based on a heating power film according to claim 1, characterized in that, The heating power film includes a first vertical film and a first inclined film that are vertically and symmetrically mounted on the mounting plate, and the side of the first inclined film close to the first vertical film is connected to the intersection of the first vertical film and the mounting plate.

3. The heat-generating power film-based fan assembly of claim 2, wherein, The angle between the first vertical membrane and the first inclined membrane is in the range of 25-35 degrees.

4. The heat-generating power film-based fan assembly of claim 2, wherein, Both the first vertical film and the first inclined film include a substrate and a heating layer, with a barrier layer between the substrate and the heating layer; a polyurethane layer and an acrylate layer are provided between the substrate and the barrier layer; the polyurethane layer is first formed on the substrate, and then the acrylate layer is formed; the barrier layer is formed on the substrate by a sputtering process.

5. The heat-generating power film-based fan assembly of claim 4, wherein, The housing includes a base and a reflector plate arranged horizontally at intervals, and a first side fixing plate and a second side fixing plate vertically and symmetrically connected to the outer ends of the base and the reflector plate. The base is configured with a wave-shaped structure. The reflector plate includes an arc-shaped plate adapted to cover one side above the fan assembly and a support plate supporting the temperature control assembly. The arc-shaped plate and the support plate are integrally connected.

6. The heat-generating power film-based fan assembly of claim 5, wherein, The fan assembly includes a fan horizontally mounted directly above the base, a motor mounted on the outside of the second side fixing plate, and a bushing mounted on the first side fixing plate. The central axes of the fan, the motor, and the bushing coincide. The output shaft of the motor passes through the first side fixing plate and is connected to one end of the fan, and the bushing is connected to the other end of the fan.

7. The power fan assembly based on a heating power film according to claim 5, characterized in that, The temperature control assembly includes a temperature controller and a temperature control housing mounted on the reflector. The temperature controller is electrically connected to the heating power film and is located inside the temperature control housing.

8. The power fan assembly based on a heating power film according to claim 6, characterized in that, The fan is an axial flow fan.

9. The power fan assembly based on a heating power film according to claim 7, characterized in that, The thermostat is a SEKI ST-22 series.

10. The heat-generating power film-based fan assembly of claim 6, wherein, The first side fixing plate and the second side fixing plate are provided with folded edge structure on the sides of their opposite sides.

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