Heating fan for silica gel heating sheet

Abstract

The utility model relates to the technical field of heating fans, and provides a heating fan for a silica gel heating sheet, which comprises a protective shell, fan blades and a driving motor, a first support frame and a second support frame are fixedly connected in the protective shell, the driving motor is positioned in the middle of the second support frame, and a plurality of damping blocks are arranged between the driving motor and the second support frame. A rotating shaft is arranged on the windward side of the fan blade, extends towards the driving motor and is fixedly connected with a driving shaft of the driving motor, the rotating shaft is located in the middle of the first supporting frame, and a damping bearing is arranged between the rotating shaft and the first supporting frame, arranged on the rotating shaft in a sleeving mode and rotationally connected with the first supporting frame and the rotating shaft. The windward side and the leeward side of the first supporting frame are each provided with a first flow dividing protrusion. By means of the technical scheme, the problems that in the prior art, the blades and the blade rotating shaft can vibrate after being used for a long time, then noise is generated, and the stability and the service life of the heating fan are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating fans, and specifically, to a heating fan for a silicone heating sheet. Background Technique

[0002] A silicone heating sheet is a flexible electric heating element, which is widely used in various occasions that require uniform heating and precise temperature control. It is composed of a soft silicone material and an embedded resistance wire inside, and has good heat resistance, flexibility and electrical insulation performance. Due to the excellent properties of the silicone material, the silicone heating sheet can be closely attached to the surfaces of various complex-shaped objects to provide a uniform heating effect. Common application fields include industrial equipment heating, laboratory instruments, medical equipment, household appliances, etc.

[0003] In order to improve the heating efficiency and application effect of the silicone heating sheet, a heating fan is usually used in combination. The heating fan accelerates the air flow through forced convection and evenly distributes the heat in the target area. This design not only improves the heating efficiency, but also can reach the set temperature faster, meeting the requirements of different application scenarios.

[0004] The prior art discloses a heating fan for a silicone heating sheet, which includes a housing with an opening on the right side. The same sound insulation board is fixedly installed on the top inner wall and the bottom inner wall of the housing, and a fan motor is fixedly installed on the right side of the sound insulation board. The right side of the sound insulation board is detachably and movably clamped with a silent housing with an opening on the left side, and a sound absorption board is fixedly installed on the inner wall of the silent housing. The fan motor is located inside the silent housing. Sound-absorbing cotton is fixedly installed on the bottom inner wall of the sound absorption board, and honeycomb grooves are opened on the top inner wall of the sound absorption board. Adsorption plates are fixedly installed on the top inner walls of the honeycomb grooves.

[0005] The above prior art has carried out noise reduction treatment on the fan motor and reduced the noise of the fan motor. However, during the use of the heating fan, it is not only the fan motor that will generate noise. Its blades and the rotating shaft connected to the blades will become loose after long-term use, and then generate vibrations. These vibrations will not only increase the noise during the overall operation of the fan, but also may affect the stability and service life of the fan. Content of the Utility Model

[0006] The utility model provides a heating fan for a silicone heating sheet, which solves the problem that the blades and the blade rotating shaft in the related technology will vibrate after long-term use, thereby generating noise, and affecting the stability and service life of the heating fan.

[0007] The technical solution of the utility model is as follows:

[0008] A heating fan for a silicone heating sheet, comprising a protective housing, a fan blade, and a driving motor. The fan blade and the driving motor are both located inside the protective housing. A first support frame and a second support frame are fixedly connected inside the protective housing. The driving motor is located in the middle of the second support frame. A plurality of shock-absorbing blocks are provided between the driving motor and the second support frame. The plurality of shock-absorbing blocks are arranged circumferentially around the driving motor, and there is a gap between adjacent shock-absorbing blocks. A rotating shaft is provided on the windward surface of the fan blade. The rotating shaft extends towards the driving motor and is fixedly connected to the driving shaft of the driving motor. The rotating shaft is located in the middle of the first support frame. A shock-absorbing bearing is provided between the rotating shaft and the first support frame. The shock-absorbing bearing is sleeved on the rotating shaft and is rotationally connected to the first support frame and the rotating shaft. First flow-dividing protrusions are provided on both the windward surface and the leeward surface of the first support frame. The cross-section of the first flow-dividing protrusion is in a triangular structure.

[0009] Further, a heating structure is provided at the air outlet of the protective housing. The heating structure is fixedly connected to the protective housing. The cross-section of the heating structure is in a "rice" shape. A ventilation heating ring is provided in the middle of the heating structure. Second flow-dividing protrusions are provided on both the windward surface and the leeward surface of the heating structure. The cross-section of the second flow-dividing protrusion is in a triangular structure.

[0010] Further, a shock-absorbing frame is fixedly connected to the edge of the heating structure. The shock-absorbing frame is embedded inside the protective housing.

[0011] Further, the fan blade includes an impeller and a plurality of blades. The plurality of blades are arranged circumferentially around the impeller. The outer edge of the windward end of the impeller extends obliquely towards the rotating shaft and abuts against the rotating shaft.

[0012] Further, a plurality of fixing plates are provided at the edge of the air outlet of the protective housing. The cross-section of the fixing plate is in an "L" shape. The fixing plate extends towards the periphery of the protective housing and extends out of the protective housing. The fixing plate is provided with a fixing opening.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] The utility model sets a first support frame inside the protective housing, and sets a shock-absorbing bearing in the middle of the first support frame. Through the connection of the shock-absorbing bearing with the rotating shaft and the first support frame, the shock-absorbing bearing provides support between the rotating shaft and the first support frame, reducing the vibration and noise generated by rotation, reducing friction and wear, and thus extending the service life of the rotating shaft and the support structure. By setting a second support frame inside the protective housing to support the drive motor, and setting shock-absorbing blocks arranged circumferentially around the drive motor between the drive motor and the second support frame, the shock-absorbing blocks can absorb and relieve the vibration generated when the drive motor operates, reduce noise and mechanical shock, protect the drive motor and other components from excessive vibration, and extend the service life of the equipment. By setting first diversion protrusions on the windward side and leeward side of the first support frame, and using first diversion protrusions with a triangular cross-section, the first diversion protrusions can smoothly separate the airflow, reduce the direct impact of the airflow on the impeller and the support structure, reduce airflow turbulence and eddy currents, optimize the airflow path, and thus reduce the noise caused by airflow impact and turbulence, optimize the airflow path, and improve the overall efficiency and performance of the fan. The utility model solves the problems in the related art that the blades and the blade rotating shafts will vibrate after long-term use, thereby generating noise, and affecting the stability and service life of the heating fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further elaborates on the present utility model in conjunction with the drawings and specific embodiments.

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 is Figure 2 a cross-sectional view taken along line A-A of

[0019] Figure 4 is Figure 3 a cross-sectional view taken along line B-B of

[0020] Figure 5 is Figure 3 a cross-sectional view taken along line C-C of

[0021] In the figures: 1, protective housing; 2, fan blade; 3, drive motor; 4, heating structure; 5, fixing plate; 21, first support frame; 22, rotating shaft; 23, shock-absorbing bearing; 24, first diversion protrusion; 25, blade; 26, impeller; 31, second support frame; 32, shock-absorbing block; 41, ventilation heating ring; 42, shock-absorbing frame; 43, second diversion protrusion; 51, fixing opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0023] As Figures 1 to 5 shown, this embodiment proposes a heating fan for a silicone heating sheet, including a protective housing 1, a fan blade 2, and a drive motor 3. The fan blade 2 and the drive motor 3 are both located inside the protective housing 1. A first support frame 21 and a second support frame 31 are fixedly connected inside the protective housing 1. The drive motor 3 is located in the middle of the second support frame 31. A plurality of shock-absorbing blocks 32 are provided between the drive motor 3 and the second support frame 31. The plurality of shock-absorbing blocks 32 are arranged circumferentially around the drive motor 3, and an interval is provided between adjacent shock-absorbing blocks 32. A rotating shaft 22 is provided on the windward surface of the fan blade 2. The rotating shaft 22 extends towards the drive motor 3 and is fixedly connected to the drive shaft of the drive motor 3. The rotating shaft 22 is located in the middle of the first support frame 21. A shock-absorbing bearing 23 is provided between the rotating shaft 22 and the first support frame 21. The shock-absorbing bearing 23 is sleeved on the rotating shaft 22, and the shock-absorbing bearing 23 is rotatably connected to the first support frame 21 and the rotating shaft 22. First flow-dividing protrusions 24 are provided on both the windward surface and the leeward surface of the first support frame 21. The cross-section of the first flow-dividing protrusion 24 is in a triangular structure.

[0024] The protective housing 1 is used to provide support for the internal structure and prevent external objects from entering the fan, protecting the internal components such as the fan blades 2 and the motor from damage. The fan blades 2 and the driving motor 3 are used to generate air flow. The driving motor 3 drives the fan blades 2 to rotate, thereby generating air flow, accelerating heat transfer through the air flow, and improving the heating efficiency of the silicone heating sheet. The first support frame 21 and the second support frame 31 are used to provide a stable installation position for the driving motor 3 and the fan blades 2, ensuring that the driving motor 3 and the fan blades 2 do not shift during operation, improving the operating stability, and reducing the vibration and displacement of the driving motor 3 and the fan blades 2 during operation. The shock-absorbing block 32 is used to absorb and relieve the vibration generated during the operation of the driving motor 3, reduce noise and mechanical shock, protect the driving motor 3 and other components from excessive vibration, and extend the service life of the equipment. The rotating shaft 22 is used to transmit the rotational power of the driving motor 3 to the fan blades 2 to make it rotate and generate air flow. The shock-absorbing bearing 23 is used to provide support between the rotating shaft 22 and the first support frame 21, and at the same time reduce the vibration of the rotating shaft 22 during rotation, reduce the vibration and noise generated by rotation, reduce friction and wear, and extend the service life of the rotating shaft 22 and the support structure. The first flow-dividing protrusion 24 is used to smoothly divide the air flow, reduce the direct impact of the air flow on the impeller 26 and the support structure, reduce air flow turbulence and eddy currents, reduce the noise caused by air flow impact and turbulence, optimize the air flow path, and improve the overall efficiency and performance of the fan.

[0025] In this embodiment, a heating structure 4 is provided at the air outlet of the protective housing 1. The heating structure 4 is fixedly connected to the protective housing 1. The cross-section of the heating structure 4 is in a "rice" shape structure. A ventilation heating ring 41 is provided in the middle of the heating structure 4. Second flow-dividing protrusions 43 are provided on both the windward side and the leeward side of the heating structure 4. The cross-section of the second flow-dividing protrusion 43 is in a triangular structure. The heating structure 4 is used to heat the passing air flow, improve the overall heating efficiency, raise the temperature of the air flow before it reaches the silicone heating sheet, and prevent the low-temperature air flow from affecting the heating efficiency of the silicone heating sheet. The heating structure 4 with a cross-section in a "rice" shape structure can provide multiple heating surfaces, increase the heating area, and at the same time maintain the strength and stability of the structure. The "rice" shape structure helps to evenly distribute the air flow and improve the heating efficiency. The ventilation heating ring 41 is used to centrally heat the air flow, ensure the smooth passage of the air flow through the heating structure 4, and improve the heating efficiency and air flow speed. The second flow-dividing protrusion 43 is used to divide and guide the air flow, reduce the direct impact of the air flow on the heating structure 4, reduce turbulence and noise, optimize the air flow path, and ensure the smooth passage of the air flow through the heating structure 4. The cross-section of the second flow-dividing protrusion 43 in a triangular structure helps to smoothly divide the air flow and reduce the formation of air flow separation and eddy currents. The heating structure 4 should be made of materials with high thermal conductivity, such as copper, aluminum, etc. Embedded resistance wires should be provided inside the heating structure 4, and the heating structure 4 can heat the air flow by the resistance wires generating heat. The connection between the heating structure 4 and the protective housing 1 should be made of materials with low thermal conductivity, such as silicone rubber, polyurethane, etc.

[0026] In this embodiment, a shock-absorbing frame 42 is fixedly connected to the edge of the heating structure 4, and the shock-absorbing frame 42 is embedded in the protective housing 1. The shock-absorbing frame 42 is used to absorb and relieve the vibration generated by the impact of the airflow on the heating structure 4 during operation, and reduce the noise generated by the vibration. The shock-absorbing frame 42 should be made of materials with low thermal conductivity, such as silicone rubber, polyurethane, etc.

[0027] In this embodiment, the fan blade 2 includes an impeller 26 and a plurality of blades 25. The plurality of blades 25 are arranged circumferentially around the impeller 26. The outer edge of the windward end of the impeller 26 extends obliquely towards the rotating shaft 22 and abuts against the rotating shaft 22. The outer edge of the windward end of the impeller 26 extending obliquely towards the rotating shaft 22 helps to smoothly guide the airflow, reduce the airflow impact and resistance, reduce the turbulence and eddy currents in the airflow, and thus reduce the noise.

[0028] In this embodiment, a plurality of fixing plates 5 are provided at the edge of the air outlet of the protective housing 1. The cross-section of the fixing plate 5 is in an "L" shape. The fixing plate 5 extends towards the periphery of the protective housing 1 and extends out of the protective housing 1. The fixing plate 5 is provided with a fixing opening 51. The fixing plate 5 is used to fix the protective housing 1, and thus fix the heating fan. The "L" shape provides two mutually perpendicular support surfaces, enhancing the support ability of the fixing plate 5, and can lift the protective housing 1 upwards so that there is a gap between the protective housing 1 and its connected device, and thus the airflow can be discharged from the gap to achieve the circulation of the airflow. The fixing plate 5 extends to the periphery of the protective housing 1 and extends beyond the edge of the protective housing 1, providing a wider range of support and fixing points. The fixing opening is used to insert screws or other fasteners to firmly connect the fixing plate 5 to its connected device.

[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating fan for a silica gel heating sheet, comprising a protective housing (1), a fan blade (2), and a drive motor (3). The fan blade (2) and the drive motor (3) are both located inside the protective housing (1), and it is characterized in that, A first support frame (21) and a second support frame (31) are fixedly connected inside the protective housing (1). The driving motor (3) is located in the middle of the second support frame (31). A plurality of shock-absorbing blocks (32) are provided between the driving motor (3) and the second support frame (31). The plurality of shock-absorbing blocks (32) are arranged circumferentially around the driving motor (3), and there is a gap between adjacent shock-absorbing blocks (32). A rotating shaft (22) is provided on the windward surface of the fan blade (2). The rotating shaft (22) extends towards the driving motor (3) and is fixedly connected to the driving shaft of the driving motor (3). The rotating shaft (22) is located in the middle of the first support frame (21). A shock-absorbing bearing (23) is provided between the rotating shaft (22) and the first support frame (21). The shock-absorbing bearing (23) is sleeved on the rotating shaft (22), and the shock-absorbing bearing (23) is rotatably connected to the first support frame (21) and the rotating shaft (22). First flow-dividing protrusions (24) are provided on both the windward surface and the leeward surface of the first support frame (21). The cross-section of the first flow-dividing protrusion (24) is in a triangular structure.

2. The heating fan for a silica gel heating sheet according to claim 1, characterized in that, A heating structure (4) is provided at the air outlet of the protective housing (1). The heating structure (4) is fixedly connected to the protective housing (1). The cross-section of the heating structure (4) is in a "rice" shape. A ventilation heating ring (41) is provided in the middle of the heating structure (4). Second flow-dividing protrusions (43) are provided on both the windward surface and the leeward surface of the heating structure (4). The cross-section of the second flow-dividing protrusion (43) is in a triangular structure.

3. The heating fan for a silicone heating sheet according to claim 2, wherein, A shock-absorbing frame (42) is fixedly connected to the edge of the heating structure (4). The shock-absorbing frame (42) is embedded inside the protective housing (1).

4. A heating fan for a silica gel heating sheet according to claim 1, wherein, The fan blade (2) includes an impeller (26) and a plurality of blades (25). The plurality of blades (25) are arranged circumferentially around the impeller (26). The outer edge of the windward end of the impeller (26) extends obliquely towards the rotating shaft (22) and abuts against the rotating shaft (22).

5. The heating fan for a silica gel heating sheet according to claim 1, characterized in that, A plurality of fixing plates (5) are provided at the edge of the air outlet of the protective housing (1). The cross-section of the fixing plate (5) is in an "L" shape. The fixing plate (5) extends towards the periphery of the protective housing (1) and extends out of the protective housing (1). The fixing plate (5) is provided with a fixing opening (51).

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