Hot air generating module of detachable module of hot air nursing device

Abstract

The invention discloses a detachable module hot air generating module of a hot air nursing device, which comprises a fixed fan bracket, a fan, a PTC (Positive Temperature Coefficient) fixed bracket, a PTC heater and a flow guide plate, air inlet flow guide inclined planes are arranged on the periphery of the inner part of the fixed fan bracket, and the fan is arranged at the top of the fixed fan bracket; the PTC fixing support is connected to the bottom of the fan fixing support, an installation limiting structure is arranged in the PTC fixing support, an air outlet is formed in the bottom of the PTC fixing support, the PTC heater is arranged in the PTC fixing support through the installation limiting structure, and the flow guide plate is arranged under the air outlet of the PTC fixing support. According to the invention, oncoming high-speed hot air is diffused to the periphery through the guide plate, the air flow is guided to diffuse, the hot air is more uniformly distributed, the disassembly and assembly process is simplified, the maintenance time and cost are saved, and the maintainability of the module is improved.

Description

Technical Field

[0001] This invention relates to the field of heating module technology, specifically a detachable hot air generation module for a hot air care device. Background Technology

[0002] With the increasing demand for health care, hot air massagers are being used more and more widely in personal care, rehabilitation therapy and other fields. PTC (Positive Temperature Coefficient) heaters, due to their automatic temperature control and safety and reliability, have become the core heating element of hot air massagers. However, the design of existing heating modules in hot air massagers has many shortcomings, making it difficult to meet users' needs for efficient and uniform hot air output and convenient maintenance. In traditional hot air massagers, the layout of the fan and heating element lacks optimization, resulting in uneven airflow distribution, with some areas having excessively concentrated or sparse airflow. This not only affects the fan's performance, generating vibration and noise, but also reduces the uniformity of hot air output, affecting the care effect. At the same time, the installation structure of the heating element is complex, lacking precise positioning and stable support, and is prone to loosening and displacement during equipment operation, affecting heating efficiency and safety. In addition, the components of traditional heating modules are mostly fixed connections, making disassembly and assembly difficult. When the fan or heating element fails, the repair and replacement costs are high and time-consuming, reducing the maintainability and service life of the product. Therefore, it is necessary to design a detachable modular hot air generation module for hot air massagers to improve the above problems. Summary of the Invention

[0003] To overcome the above-mentioned defects, the present invention provides a detachable hot air generation module for a hot air care device, which not only improves the uniformity of hot air distribution, but also saves maintenance time and costs, and improves the maintainability of the module.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The hot air care unit features a detachable hot air generation module, including: A fixed fan bracket, wherein the inside of the fixed fan bracket is provided with an air inlet guide slope on all four sides; A fan, which is mounted on top of a fixed fan bracket; The PTC mounting bracket is connected to the bottom of the fixed fan bracket. The PTC mounting bracket has an internal installation limiting structure and an air outlet at its bottom. PTC heater, wherein the PTC heater is mounted inside the PTC fixing bracket by means of a mounting limiting structure; A deflector plate is positioned directly below the air outlet of the PTC mounting bracket.

[0005] Preferably, the air inlet guide slope is inclined from top to bottom along the outside of the fixed fan bracket towards its interior.

[0006] Preferably, the top of the fixed fan bracket is provided with a receiving groove, and the fan is installed inside the receiving groove.

[0007] Preferably, the fixed fan bracket has positioning holes at all four corners of its bottom, the receiving groove has a first connecting hole at its bottom that communicates with the positioning holes, and the fan has mounting holes at all four corners. The fan is mounted and fixed to the fixed fan bracket by bolts passing through the mounting holes and the first connecting holes.

[0008] Preferably, the outer wall of the PTC mounting bracket is provided with an outer edge plate, and four rectangularly distributed connecting columns are fixedly connected to the top of the outer edge plate. The top of each connecting column is provided with a second connecting hole. The connecting column corresponds to the positioning hole on the fixed fan bracket. The top of the connecting column is inserted into the positioning hole and is connected and fixed by bolts passing through the first and second connecting holes.

[0009] Preferably, the deflector is a raised conical "V" shape.

[0010] Preferably, the four corners of the guide plate are connected and fixed to the inner wall of the PTC fixing bracket by connecting plates.

[0011] Preferably, the installation limiting structure includes a support block fixedly connected to the inner wall of the air outlet of the PTC fixing bracket, and the PTC fixing bracket is provided with support blocks on all four inner walls. The installation limiting structure also includes a bearing portion disposed on the top of the connecting plate.

[0012] Preferably, the top surface of the bearing portion and the support block are located on the same horizontal plane, and the fan is attached to the bearing portion of the support block and the connecting plate.

[0013] Preferably, a crimping stop is provided at the bottom of the inner wall of the fixed fan bracket, and the crimping stop presses against the top of the PTC heater.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention guides external air to enter the fixed fan bracket more concentratedly through fan activation, forming a more stable airflow. The airflow entering the fixed fan bracket flows downward into the PTC fixed bracket. When the airflow passes through the PTC heater, the PTC heater is powered on and heats up, transferring heat to the flowing air and raising the air temperature. The heated air flows out from the air outlet at the bottom of the PTC fixed bracket. The guide plate located directly below the air outlet plays a role in diffusing the oncoming high-speed hot air to the outer periphery, guiding the airflow diffusion and making the hot air more evenly distributed.

[0015] 2. In this invention, the fan and the fixed fan bracket are connected by bolts, and the PTC fixed bracket and the fixed fan bracket are connected by bolts. The PTC heater is positioned and supported by the support block inside the PTC fixed bracket and the bearing part on the top of the connecting plate. Furthermore, the pressing edge at the bottom of the inner wall of the fixed fan bracket presses against the top of the PTC heater, which helps to fix the PTC heater in place and prevents it from loosening or shifting. This simplifies the disassembly and assembly process of the fan and the fixed fan bracket, the PTC fixed bracket and the fixed fan bracket, and the PTC heater and the PTC fixed bracket, saving maintenance time and costs and improving the maintainability of the module. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the detachable hot air generation module for the hot air care device; Figure 2 A cross-sectional schematic diagram of the detachable hot air generation module for a hot air care device. Figure 3 A schematic diagram of the unfolded structure of the detachable hot air generation module of the hot air care device; Figure 4 Schematic diagram of the fixed fan bracket structure; Figure 5 A schematic diagram of the PTC fixing bracket structure.

[0017] In the diagram: 1. Fixed fan bracket; 101. Receiving groove; 102. Air inlet guide slope; 103. First connecting hole; 104. Press-fit baffle; 2. Fan; 3. PTC fixed bracket; 301. Outer edge plate; 302. Connecting column; 3021. Second connecting hole; 303. Connecting plate; 3031. Bearing part; 304. Support block; 4. PTC heater; 5. Guide plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example: Please refer to Figures 1-5This embodiment provides a detachable hot air generation module for a hot air care device, including a fixed fan bracket 1, a fan 2, a PTC fixed bracket 3, a PTC heater 4, and a guide plate 5. The fixed fan bracket 1 has inlet guide slopes 102 on all four sides. The fan 2 is mounted on the top of the fixed fan bracket 1. The PTC fixed bracket 3 is connected to the bottom of the fixed fan bracket 1. The PTC fixed bracket 3 has an installation limiting structure inside, and an air outlet is located at the bottom. The PTC heater 4 is mounted inside the PTC fixed bracket 3 via the installation limiting structure. The guide plate 5 is located directly below the air outlet of the PTC fixed bracket 3. When the fan 2 is activated, it guides external air to enter the fixed fan bracket 1 more concentratedly, forming a more stable airflow. The airflow from frame 1 flows downward into the PTC fixed bracket 3. When the airflow passes through the PTC heater 4, the PTC heater 4 is energized and heats up, transferring heat to the flowing air and raising its temperature. The heated air flows out from the air outlet at the bottom of the PTC fixed bracket 3. The guide plate located directly below the air outlet plays a role in diffusing the oncoming high-speed hot air outward, guiding the airflow to spread more evenly. This hot air care device is a detachable modular hot air generation module that can be used in hot air foot baths, hand hot air care devices, abdominal hot air care devices, neck hot air care devices, waist hot air care devices, head hot air care devices, private area hot air care devices, shoulder hot air care devices, leg hot air care devices, and arm hot air care devices. This is designed to better heat and care for various parts of the human body and promote blood circulation.

[0020] In this embodiment, as Figure 4 As shown, the inlet guide slope 102 is inclined from top to bottom along the outside of the fixed fan bracket 1 towards its inside, so that the cross-section of the area inside the fixed fan bracket 1 located on the inlet guide slope 102 gradually decreases from top to bottom. The inclined guide slope 102 helps to form a more uniform airflow distribution at the air inlet of the fixed fan bracket 1, which can integrate and sort the airflow from different directions, avoid local airflow being too concentrated or sparse, and make the airflow entering the fan 2 more stable and uniform, thereby improving the overall working performance and stability of the fan, reducing vibration and noise problems caused by uneven airflow, and ensuring that more cold air enters the fan 2 quickly and evenly, making the airflow at the air inlet more uniform and concentrated, while also reducing the temperature of the fan motor and increasing the service life of the fan.

[0021] In this embodiment, as Figure 2 , Figure 3 and Figure 4As shown, a receiving groove 101 is provided at the top of the fixed fan bracket 1, and the fan 2 is installed inside the receiving groove 101. Positioning holes are provided at the four corners of the bottom of the fixed fan bracket 1. A first connecting hole 103 communicating with the positioning holes is provided at the bottom of the receiving groove 101. Mounting holes are provided at the four corners of the fan 2. The fan 2 is installed and fixed to the fixed fan bracket 1 by bolts passing through the mounting holes and the first connecting holes 103. The receiving groove 101 provides a precise positioning reference for the installation of the fan 2. During installation, the operator can quickly and accurately place the fan 2 in the correct position, reducing the time and effort spent on repeated adjustments and improving installation efficiency. The connection method, using bolts passing through the mounting holes of the fan 2 and the first connecting holes 103 of the fixed fan bracket 1, has high strength and reliability. It can withstand the vibration and external forces generated by the fan 2 during operation, ensuring that the fan 2 is always stably installed on the fixed fan bracket 1. Furthermore, the bolt connection method allows the operator to easily use tools to unscrew the bolts and remove the fan 2 for inspection or replacement when the fan 2 malfunctions or requires maintenance.

[0022] In this embodiment, as Figure 4 and Figure 5 As shown, an outer edge plate 301 is provided on the outer wall of the PTC mounting bracket 3. Four rectangular connecting posts 302 are fixedly connected to the top of the outer edge plate 301. The top of the connecting post 302 is provided with a second connecting hole 3021. The connecting post 302 corresponds to the positioning hole on the fixed fan bracket 1. The top of the connecting post 302 is inserted into the positioning hole and connected and fixed by bolts passing through the first connecting hole 103 and the second connecting hole 3021. The positioning hole provides precise guidance and positioning for the connecting post 302 during installation. Operators can quickly and accurately place the PTC mounting bracket 3 in the correct position, reducing the time and effort spent on repeated adjustments and improving installation efficiency. The PTC mounting bracket 3 is connected and fixed to the fixed fan bracket 1 by bolts passing through the first connecting hole 103 and the second connecting hole 3021. This connection method has high strength and reliability. Furthermore, the PTC heater 4 is located inside the PTC mounting bracket 3. When it is necessary to inspect or replace the PTC mounting bracket 3 or the PTC heater 4, it is only necessary to use tools to unscrew the bolts to easily remove the PTC mounting bracket 3 from the fixed fan bracket 1. This design greatly simplifies the disassembly and installation process, saves maintenance time and costs, and improves the maintainability of the module.

[0023] In this embodiment, as Figure 2 and Figure 5As shown, the four corners of the guide plate 5 are connected and fixed to the inner wall of the PTC fixing bracket 3 by connecting plates 303. The guide plate 5 is a raised conical "V" shape, and its width gradually increases from top to bottom. The connecting plates 303 connect the guide plate 5 and the PTC fixing bracket 3 into one unit, and there is a certain gap between the air outlet of the guide plate 5 and the PTC fixing bracket 3. The guide plate 5 makes full use of the aerodynamic principle to optimize the flow state of hot air, thereby improving thermal efficiency, improving temperature uniformity and reducing energy consumption. It ensures that the human body does not burn the skin when in contact with hot air, and the human body temperature is evenly distributed, which can better provide effective care for the feet and legs and promote blood circulation. Its specific principle and function are: guiding Airflow diffusion: The conical protrusion of the guide plate 5 is located directly below the air outlet of the PTC fixed bracket 3, forcing the high-speed hot air coming from the front to diffuse outwards. The principle is similar to the "collision effect". After the high-speed airflow hits the cone, the kinetic energy is converted into pressure energy, forcing the airflow to spread out evenly and radially along the cone surface. It also disrupts laminar flow and enhances turbulence. Without the guide plate 5, the hot air is prone to forming concentrated laminar flow bundles, leading to local overheating. However, with the guide plate 5, the conical protrusion of the guide plate 5 interferes with the airflow path, generating controllable vortices and accelerating the mixing of hot air with the surrounding cold air. It also reduces wind speed and prolongs heat exchange time. After the hot airflow hits the cone of the guide plate 5, the speed decreases, prolonging the residence time of the hot air in the action area and improving heat transfer efficiency.

[0024] In this embodiment, as Figure 5As shown, the installation limiting structure includes a support block 304 fixedly connected to the inner wall of the air outlet of the PTC mounting bracket 3. Support blocks 304 are provided on all four inner walls of the PTC mounting bracket 3. The installation limiting structure also includes a bearing portion 3031 located on the top of the connecting plate 303. The bearing portion 3031 and the top surface of the support block 304 are on the same horizontal plane. The fan 2 rests on the support block 304 and the bearing portion 3031 of the connecting plate 303. The support block 304 and the bearing portion 3031 of the connecting plate 303 provide a clear and fixed reference position for the installation of the fan 2. When installing the fan 2, the operator only needs to place the fan 2 on the support block 304 and the bearing portion 3031 of the connecting plate 303. The top surfaces of the carrier 3031 and the support block 304 are on the same horizontal plane, allowing the fan 2 to quickly and accurately reach the predetermined installation height and horizontal position without repeated measurement and adjustment, greatly simplifying the installation process. The fan 2 rests on the carrier 3031 of the support block 304 and the connecting plate 303. This multi-point support method can evenly distribute the weight of the fan 2, forming a stable connection between the fan 2 and the PTC mounting bracket 3. It also makes full use of the internal space of the PTC mounting bracket 3 without adding too many structural components or occupying too much space. This compact design makes the structure of the entire module simpler. While meeting the installation requirements of the fan 2, it reduces the size and weight of the module, which is conducive to the miniaturization and lightweight design of the module.

[0025] In this embodiment, as Figure 4 As shown, a crimping stop 104 is provided at the bottom of the inner wall of the fixed fan bracket 1. The crimping stop 104 presses against the top of the PTC heater 4. After the PTC fixed bracket 3 is connected to the fixed fan bracket 1, the crimping stop 104 on the fixed fan bracket 1 presses against the top of the PTC heater 4. The crimping stop 104 applies pressure to the top of the PTC heater 4, which improves the fixing effect of the PTC heater 4 and prevents the PTC heater 4 from loosening or shifting.

[0026] In this embodiment, the guide plate 5, connecting plate 303, support block 304, outer edge plate 301, connecting column 302 and PTC fixing bracket 3 can be integrally injection molded to improve the overall structural strength of PTC fixing bracket 3; the press-fit baffle 104 and the fixed fan bracket 1 can also be integrally injection molded to improve the overall structural strength of fixed fan bracket 1.

[0027] Working Principle: During assembly, the PTC heater 4 is placed inside the PTC mounting bracket 3. Positioning is achieved using the support block 304 on the inner wall of the PTC mounting bracket 3's air outlet and the bearing portion 3031 on the top of the connecting plate 303. Since the top surface of the bearing portion 3031 and the support block 304 are on the same horizontal plane, the PTC heater 4 can quickly and accurately reach the predetermined installation height and horizontal position. The PTC heater 4 rests on the support block 304 and the bearing portion 3031 of the connecting plate 303. This multi-point support method evenly distributes the weight of the PTC heater 4, ensuring a stable connection with the PTC mounting bracket 3. Simultaneously, it fully utilizes the internal space of the PTC mounting bracket 3, making the module structure simpler. Then, the connecting posts 302 on the outside of the PTC mounting bracket 3 are inserted into the positioning holes at the four corners of the bottom of the fixed fan bracket 1. The positioning holes provide precise guidance and positioning for the connecting posts 302, allowing operators to quickly and accurately assemble the fixed fan bracket 1 and the PTC mounting bracket 3. Then, the bolts are passed through the first connecting hole 103 on the fixed fan bracket 1 and the second connecting hole 3021 at the top of the connecting column 302 to connect and fix the PTC fixed bracket 3 to the fixed fan bracket 1. After connection, the crimping stop 104 at the bottom of the inner wall of the fixed fan bracket 1 presses against the top of the PTC heater 4, improving the fixation of the PTC heater 4 and preventing it from loosening or shifting. Then, the fan 2 is placed in the receiving groove 101 at the top of the fixed fan bracket 1. Since the receiving groove 101 provides a precise positioning reference, the fan 2 can be quickly and accurately placed in the correct position. The bolts are passed through the mounting holes at the four corners of the fan 2 and the first connecting hole 103 on the fixed fan bracket 1 to firmly install the fan 2 on the fixed fan bracket 1. Through this structural design, the disassembly and assembly process of the fan 2 and the fixed fan bracket 1, the PTC fixed bracket 3 and the fixed fan bracket 1, and the PTC heater 4 and the PTC fixed bracket 3 are simplified, saving maintenance time and costs and improving the maintainability of the module. During operation, fan 2 is activated, and its rotation guides external air into the fixed fan bracket 1. The inlet guide slope 102 inside the fixed fan bracket 1 helps to form a more uniform airflow distribution at the inlet, integrating and streamlining airflow from different directions. This prevents localized airflow from becoming too concentrated or sparse, making the airflow entering fan 2 more stable and uniform. Consequently, this improves the overall performance and stability of fan 2, reduces vibration and noise problems caused by uneven airflow, ensures that more cool air enters fan 2 quickly and evenly, and simultaneously reduces the fan motor temperature, extending the fan's service life. The airflow entering the fixed fan bracket 1 flows downward into the PTC fixed bracket 3. When the airflow passes through the PTC heater 4, the PTC heater 4 is energized and heats up, transferring heat to the flowing air and raising the air temperature. The heated air flows out from the air outlet at the bottom of the PTC fixed bracket 3. The guide plate 5 located directly below the air outlet plays a role in optimizing the flow of hot air, thereby improving thermal efficiency, improving temperature uniformity, and reducing energy consumption. This ensures that the human body does not burn the skin when in contact with the hot air, and that the temperature of the human body is evenly distributed, providing better and more effective care for the feet and legs and promoting blood circulation.

[0028] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present technical solution are within the protection scope of the present invention.

Claims

1. A detachable hot air generating module for a hot air care device, characterized in that: include: Fixed fan bracket (1), and the fixed fan bracket (1) has an air inlet guide slope (102) on all four sides inside. Fan (2), the fan (2) is mounted on the top of the fixed fan bracket (1); PTC mounting bracket (3), the PTC mounting bracket (3) is connected to the bottom of the fixed fan bracket (1), the PTC mounting bracket (3) is provided with an installation limiting structure inside, and the bottom of the PTC mounting bracket (3) is provided with an air outlet; PTC heater (4), the PTC heater (4) is installed inside the PTC fixing bracket (3) by means of a mounting limiting structure; The air guide plate (5) is located directly below the air outlet of the PTC fixed bracket (3).

2. The detachable hot air generating module of the hot air care device according to claim 1, characterized in that, The air inlet guide slope (102) is inclined from top to bottom along the outside of the fixed fan bracket (1) towards its inside.

3. The detachable hot air generating module of the hot air care device according to claim 1, characterized in that, The fixed fan bracket (1) has a receiving groove (101) at its top end, and the fan (2) is installed inside the receiving groove (101).

4. The detachable hot air generating module of the hot air care device according to claim 3, characterized in that, The fixed fan bracket (1) has positioning holes at the four corners of its bottom. The bottom of the receiving groove (101) has a first connecting hole (103) that communicates with the positioning holes. The fan (2) has mounting holes at the four corners of its bottom. The fan (2) is fixed to the fixed fan bracket (1) by bolts passing through the mounting holes and the first connecting holes (103).

5. The detachable hot air generating module of the hot air care device according to claim 4, characterized in that, The outer wall of the PTC fixing bracket (3) is provided with an outer edge plate (301). Four rectangular connecting columns (302) are fixedly connected to the top of the outer edge plate (301). The top of the connecting column (302) is provided with a second connecting hole (3021). The connecting column (302) corresponds to the positioning hole on the fixed fan bracket (1). The top of the connecting column (302) is inserted into the positioning hole and connected and fixed by bolts passing through the first connecting hole (103) and the second connecting hole (3021).

6. The detachable hot air generating module of the hot air care device according to claim 1, characterized in that, The guide plate (5) is a raised conical "V" shape.

7. The detachable hot air generating module of the hot air care device according to claim 6, characterized in that, The four corners of the guide plate (5) are connected and fixed to the inner wall of the PTC fixing bracket (3) by connecting plates (303).

8. The detachable hot air generating module of the hot air care device according to claim 7, characterized in that, The installation limiting structure includes a support block (304) fixedly connected to the inner wall of the air outlet of the PTC fixed bracket (3), and the support block (304) is provided on all four sides of the inner wall of the PTC fixed bracket (3). The installation limiting structure also includes a bearing part (3031) disposed on the top of the connecting plate (303).

9. The detachable hot air generating module of the hot air care device according to claim 8, characterized in that, The top surface of the bearing part (3031) and the support block (304) are on the same horizontal plane, and the fan (2) is attached to the bearing part (3031) of the support block (304) and the connecting plate (303).

10. The detachable hot air generating module of the hot air care device according to claim 1, characterized in that, A crimping stop (104) is provided at the bottom of the inner wall of the fixed fan bracket (1), and the crimping stop (104) presses against the top of the PTC heater (4).

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