High-temperature dehumidification fan for ice persimmon production
By optimizing the air duct structure and implementing a dual filtration design, the problems of low dehumidification efficiency and inconvenient cleaning of exhaust fans used in persimmon production under high temperature and humidity conditions have been solved, achieving efficient humidity control and low maintenance costs.
Patent Information
- Application Number
- CN202522459181.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-11-19
AI Technical Summary
Existing exhaust fans used in persimmon production have low dehumidification efficiency in high temperature and high humidity environments, and the cleaning components are inconvenient to disassemble, resulting in high maintenance costs.
The design incorporates a partition plate to separate the independent air inlet and outlet chambers, an optimized air duct structure combining a spiral air guide plate and an arc-shaped guide protrusion, dual filtration with a dustproof screen and a filter screen, and an embedded filter cleaning component and a screw-driven scraper to simplify cleaning operations.
It improves airflow stability, enhances humidity control accuracy, protects core components, and reduces maintenance difficulty and cost.
Smart Images

Figure CN224679733U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of persimmon production equipment, specifically, it relates to a high-temperature dehumidification fan for persimmon production. Background Technology
[0002] The production of frozen persimmons involves several processes, including washing, peeling, and drying. The drying process is the key to the quality of frozen persimmons. During the drying process, it is necessary to maintain a high temperature environment and remove the moisture generated by the evaporation of the persimmons in a timely manner to ensure that the frozen persimmons are dried evenly and have a good taste.
[0003] Currently, most dehumidification equipment on the market is ordinary industrial exhaust fan. These fans have many problems in the high temperature and high humidity environment of persimmon production: On the one hand, the air duct structure of ordinary exhaust fans is not reasonably designed, and the airflow is turbulent during the air intake and exhaust process, resulting in low dehumidification efficiency and difficulty in meeting the precise humidity control requirements during persimmon drying; on the other hand, a small amount of fruit pulp fragments and dust are generated during the persimmon drying process. These impurities can easily enter the exhaust fan and adhere to the impeller or air duct wall. Long-term use will further reduce the dehumidification efficiency. Moreover, the cleaning parts of ordinary exhaust fans are mostly fixed structures, which are inconvenient to disassemble and clean, increasing the equipment maintenance cost.
[0004] In view of this, this utility model is proposed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-temperature dehumidification fan for persimmon production, which solves the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A high-temperature dehumidification fan for persimmon production includes: a housing, an air inlet assembly, an air outlet assembly, and a filter cleaning assembly. A partition plate is fixedly installed inside the housing, dividing the interior into independent air inlet and exhaust chambers. A guide channel is formed in the middle of the partition plate, connecting the air inlet and exhaust chambers. The air inlet assembly includes an air inlet hood and a guide plate. The air inlet hood is fixed to the end of the housing near the air inlet chamber, and the guide plate is located on the inner wall of the air inlet hood. The air outlet assembly includes an air outlet duct and a baffle. One end of the air outlet duct is connected to the air outlet of the exhaust chamber, and the baffle is threaded onto the outlet end of the air outlet duct furthest from the housing. The filter cleaning assembly includes a filter screen and a scraper. Both the filter screen and the scraper are installed inside the air inlet chamber. The filter screen covers the guide channel, and the side wall of the scraper abuts against the filter screen.
[0007] Optionally, a fixed frame is fixedly connected inside the exhaust cavity, and an impeller is connected to one end of the fixed frame. The impeller is connected to an external power source through a wire.
[0008] Optionally, the top of the housing has a groove that communicates with the air inlet cavity. The filter cleaning component is installed in the air inlet cavity through the groove, and a top cover is bolted to the top of the groove.
[0009] Optionally, the side wall of the air inlet cavity is provided with an installation groove, both ends of the scraper are located in the installation groove, and a lead screw is connected to the installation groove. The lead screw passes through the scraper and is threadedly connected to the scraper, and the top end of the lead screw is located in the groove.
[0010] Optionally, a sliding cover is slidably connected to the bottom of the housing, and sliders are connected to the left and right ends of the sliding cover. A groove corresponding to the slider is opened at the bottom of the housing, and the filter cleaning component is located above the sliding cover.
[0011] Optionally, multiple air guide plates are provided, and the multiple air guide plates are evenly distributed in a spiral shape on the inner wall of the air inlet hood. A dustproof net is also provided on the inner wall of the air inlet hood. The dustproof net is located on the side of the air guide plate away from the air inlet cavity, and the dustproof net is detachably connected to the inner wall of the air inlet hood by a buckle.
[0012] Optionally, the inner wall of the air outlet duct is provided with a flow guiding protrusion. There are multiple flow guiding protrusions, and the multiple flow guiding protrusions are evenly distributed along the length of the air outlet duct. The flow guiding protrusions have an arc-shaped structure.
[0013] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: 1. By setting up a partition to divide the independent air inlet and exhaust chambers, and combining it with a spiral air guide plate and an arc-shaped guide protrusion on the exhaust duct, the optimized air duct structure reduces airflow turbulence and eddies, improves airflow stability, and achieves a significant improvement in dehumidification efficiency, meeting the precise humidity control requirements of persimmon drying. 2. By setting up a dual filtration structure of dustproof net and filter, large particulate impurities, persimmon pulp fragments and fine dust in the air are intercepted respectively, preventing impurities from entering the fan and adhering to the impeller or air duct wall, thus achieving effective protection of the core components and maintaining the long-term stable dehumidification efficiency of the equipment. 3. By setting up embedded filter cleaning components, screw-driven scrapers, and sliding cover, the disassembly and assembly process of filter components and the cleaning operation of filter screens are simplified. Component replacement and impurity cleaning can be completed without disassembling the whole machine, thereby reducing the difficulty of equipment maintenance and reducing maintenance costs.
[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0015] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure; Figure 2 This is a schematic diagram of the overall structure after the dustproof net has been removed. Figure 3 This is a schematic diagram of the groove structure; Figure 4 This is a schematic diagram of the overall and partial cross-sectional structure; Figure 5 This is a schematic diagram of the structure from another perspective, showing a partial cross-section of the whole; Figure 6 This is a schematic diagram of the cross-sectional structure of the air outlet duct; Figure 7 This is a schematic diagram of the filter screen and scraper structure.
[0016] The attached diagram lists the components represented by each number as follows: 1. Housing; 2. Top cover; 3. Slide cover; 4. Dustproof net; 5. Air outlet duct; 6. Windshield cover; 7. Air inlet cover; 8. Air guide plate; 9. Sliding block; 10. Slide groove; 11. Filter screen; 12. Divider plate; 13. Scraper; 14. Lead screw; 15. Impeller; 16. Fixing frame; 17. Air outlet end; 18. Air guide channel; 19. Air guide protrusion; 20. Groove.
[0017] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings.
[0019] Example 1 Please see Figure 1-7As shown, this embodiment provides a high-temperature dehumidification fan for persimmon production, including: a housing 1, an air inlet assembly, an air outlet assembly, and a filter cleaning assembly. A partition plate 12 is fixedly provided inside the housing 1, dividing the interior of the housing 1 into independent air inlet chambers and air outlet chambers. A guide channel 18 is provided in the middle of the partition plate 12, and the air inlet chamber and the air outlet chamber are connected through the guide channel 18. The air inlet assembly includes an air inlet hood 7 and a guide plate 8. The air inlet hood 7 is fixed at one end of the housing 1 near the air inlet chamber, and the guide plate 8 is located on the inner wall of the air inlet hood 7. The air outlet assembly includes an air outlet duct 5 and a baffle 6. One end of the air outlet duct 5 is connected to the air outlet end 17 of the air outlet chamber, and the baffle 6 is threadedly installed at the outlet end of the air outlet duct 5 away from the housing 1. The filter cleaning assembly includes a filter screen 11 and a scraper 13. Both the filter screen 11 and the scraper 13 are installed in the air inlet chamber. The filter screen 11 covers the guide channel 18, and the side wall of the scraper 13 abuts against the filter screen 11.
[0020] The casing 1, as the external frame of the fan, plays a crucial role in supporting and protecting internal components and guiding airflow. It effectively isolates the internal parts from external environmental interference and protects operators from potential injury during operation. The partition plate 12 is tightly connected to the inner wall of the casing 1 by welding or bolting, dividing the interior of the casing 1 into completely independent air inlet and exhaust chambers. This prevents the airflow from mixing and interfering with the airflow inside the casing 1, ensuring a clear airflow path. The guide channel 18 guides the airflow within the air inlet chamber to a stable and controlled flow. The air enters the exhaust chamber in sequence, laying the foundation for the efficient discharge of subsequent airflow. The air inlet hood 7 is annular and is fixed to the end of the casing 1 near the air inlet chamber by welding. Its annular structure can expand the air intake area, allowing air to enter the air inlet chamber more evenly and avoiding excessive or insufficient local airflow that would affect the overall operating efficiency of the fan. The air guide plate 8 is installed on the inner wall of the annular air inlet hood 7, which can guide and rectify the incoming airflow, reduce eddies and resistance during the air intake process, and allow the airflow to enter the air inlet chamber more smoothly, further improving the air intake efficiency. The exhaust duct... One end of the duct 5 is fixed to the air outlet 17 of the exhaust chamber via a threaded connection, and the other end extends to the designated dehumidification area. It can transport the treated humid and hot air in the exhaust chamber to the outside to achieve dehumidification of the production environment. The baffle 6 is installed at the outlet of the exhaust duct 5 away from the casing 1 via a thread. When dehumidification is not required, the airflow of the exhaust duct 5 can be blocked by installing the baffle 6. The filter screen 11 is made of a material with high filtration accuracy and completely covers the guide channel 18 on the partition plate 12. It can filter and intercept the air entering the air inlet chamber. To prevent dust, impurities, persimmon fragments, and other pollutants in the air from entering the exhaust cavity or adhering to the internal components of the fan, thus avoiding damage to the fan or affecting the quality of the exhaust air, a scraper 13 is installed inside the air inlet cavity. Its side wall is in close contact with the surface of the filter screen 11. During fan operation, the scraper 13 can be manually driven to move along the surface of the filter screen 11 to scrape and clean the pollutants adhering to the surface of the filter screen 11, thereby preventing the filter screen 11 from becoming clogged and reducing the air intake efficiency, and ensuring that the filter screen 11 always maintains good filtration performance.
[0021] Example 2 Please see Figure 1-7 As shown, in this embodiment, a groove is provided at the top of the housing 1, and the groove communicates with the air inlet cavity. The filter cleaning component is installed in the air inlet cavity through the groove. The top of the groove is connected to the top cover 2 by bolts. An installation groove is provided on the side wall of the air inlet cavity. The two ends of the scraper 13 are located in the installation groove, and a lead screw 14 is connected to the installation groove. The lead screw 14 passes through the scraper 13 and is threadedly connected to the scraper 13. The top of the lead screw 14 is located in the groove. A sliding cover 3 is slidably connected to the bottom of the housing 1. A slider 9 is connected to the left and right ends of the sliding cover 3. A sliding groove 10 corresponding to the slider 9 is provided at the bottom of the housing 1. The filter cleaning component is located above the sliding cover 3.
[0022] The top of the housing 1 has a groove communicating with the interior of the air inlet cavity. The size of the groove matches the shape of the filter cleaning component, forming an embedded installation channel. The filter cleaning component can be directly placed into the air inlet cavity through the groove without disassembling the entire housing 1, greatly simplifying the installation and replacement process. The top of the groove is bolted to a top cover 2. A sealing gasket is usually provided between the top cover 2 and the edge of the groove. Tightening the bolts can seal the groove, preventing external dust, moisture, or impurities from entering the air inlet cavity through the groove, while also preventing airflow leakage within the air inlet cavity and ensuring air intake efficiency. In addition, the bolted connection design of the top cover 2 allows operators to open the groove simply by removing the bolts, making it convenient to inspect, clean, or replace the filter cleaning component. The side wall of the air inlet cavity has mounting grooves corresponding to the two ends of the scraper 13. The two ends of the scraper 13 are embedded in the mounting grooves. The mounting grooves not only provide stable support for the scraper 13 but also limit the scraper 13. The movement trajectory of the scraper 13 ensures that it always fits tightly against the surface of the filter screen 11. A lead screw 14 is connected to one side of the mounting groove. The lead screw 14 passes through the scraper 13 and engages with the threaded hole inside the scraper 13. The top of the lead screw 14 extends to the groove at the top of the housing 1. The lead screw 14 can be rotated manually. When the lead screw 14 rotates, the scraper 13 moves axially along the mounting groove and the lead screw 14 under the action of thread transmission, so as to achieve uniform scraping and cleaning of the surface of the filter screen 11, avoiding the problem of incomplete cleaning caused by the scraper 13 shifting during manual cleaning. When the scraper 13 cleans the filter screen 11, the contaminants naturally fall onto the sliding cover 3. The operator only needs to slide the sliding cover 3 out along the slide groove 10 to quickly dump the contaminants without disassembling other parts, which greatly simplifies the contaminant cleaning process. When the sliding cover 3 is closed, it can also prevent external impurities from entering the air inlet cavity from the bottom of the housing 1, further ensuring the cleanliness of the air inlet cavity.
[0023] Example 3 Please see Figure 1-7 As shown, in this embodiment, a fixed frame 16 is fixedly connected inside the exhaust cavity, and an impeller 15 is connected to one end of the fixed frame 16. The impeller 15 is connected to an external power source through a wire.
[0024] A mounting bracket 16, made of metal and featuring a cross-shaped support structure, is fixed to the exhaust chamber via welding or high-strength bolts. Its core function is to provide a stable mounting surface for the impeller 15, ensuring it does not shift or wobble during high-speed rotation. The end of the mounting bracket 16 furthest from the chamber wall is connected to the impeller 15 via a bearing. The impeller 15 blades are aerodynamically designed to generate negative pressure during rotation, accelerating the airflow from the inlet chamber to the exhaust chamber, thereby driving the humid and hot air out through the outlet duct 5. The impeller 15 is connected to an external power source via wires. Operators can adjust the power output using an external switch or control system to control the impeller 15's rotation speed, thus flexibly adjusting the fan's dehumidification intensity to meet the humidity requirements at different stages of persimmon production.
[0025] Multiple air guide plates 8 are provided, and the multiple air guide plates 8 are evenly distributed in a spiral shape on the inner wall of the air inlet cover 7. A dustproof net 4 is also provided on the inner wall of the air inlet cover 7. The dustproof net 4 is located on the side of the air guide plate 8 away from the air inlet cavity, and the dustproof net 4 is detachably connected to the inner wall of the air inlet cover 7 by a buckle.
[0026] The spirally arranged uniform air guide plates 8 can guide and pressurize the incoming airflow. When the airflow flows along the spiral air guide plates 8, it will form a spiral upward airflow trajectory, reducing the collision and eddies between airflows and reducing the air intake resistance. At the same time, the spiral structure can gradually compress the airflow, improve the speed and stability of the airflow entering the air intake cavity, and avoid the decrease in air intake efficiency caused by local airflow turbulence.
[0027] The inner wall of the air outlet duct 5 is provided with a guide protrusion 19. There are multiple guide protrusions 19, and the multiple guide protrusions 19 are evenly distributed along the length of the air outlet duct 5. The guide protrusions 19 have an arc-shaped structure.
[0028] The dust filter 4 uses a fine-mesh metal mesh or synthetic fiber mesh, which can pre-filter the incoming air before the filter 11, intercepting larger impurities in the air (such as leaves, large dust particles, and persimmon peel fragments). Its snap-fit connection design (with slots on the inner wall of the air inlet hood 7 and corresponding snaps on the edge of the dust filter 4) allows operators to quickly disassemble the dust filter 4 for cleaning or replacement without tools, making it extremely convenient to operate.
[0029] Working principle: During operation, the impeller 15, supported by the fixed frame 16 inside the exhaust chamber, rotates at high speed when powered on, generating negative pressure to drive airflow. The humid and hot air in the production environment first enters the air inlet hood 7, and is initially filtered by the dustproof net 4 connected by snaps to remove large particles of impurities. Then, it is guided and rectified by the spiral air guide plate 8 to reduce turbulence and enter the air inlet chamber smoothly. The airflow is then filtered a second time by the filter screen 11 covering the guide channel 18 to remove fine dust and ice chips. After that, it enters the exhaust chamber through the guide channel 18 and is finally discharged through the air outlet pipe 5 with the arc-shaped guide protrusion 19 under the thrust of the impeller 15. The filter cleaning component is installed by being embedded in the groove at the top of the housing 1, which is convenient for disassembly and replacement. The top cover 2 is sealed to prevent leakage. The scraper 13 is driven by the screw 14 to move along the mounting groove, which can evenly scrape off the pollutants from the filter screen 11. The fallen impurities are collected in the bottom sliding cover 3, which can be pulled out for cleaning.
[0030] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.
Claims
1. A high-temperature dehumidification fan for persimmon production, characterized in that, include: The housing (1), air inlet assembly, air outlet assembly and filter cleaning assembly are provided. The housing (1) is fixedly provided with a partition plate (12). The partition plate (12) divides the interior of the housing (1) into an independent air inlet chamber and an air outlet chamber. A guide channel (18) is opened in the middle of the partition plate (12). The air inlet chamber and the air outlet chamber are connected through the guide channel (18). The air intake assembly includes an air intake hood (7) and an air guide plate (8). The air intake hood (7) is fixed to one end of the housing (1) near the air intake cavity, and the air guide plate (8) is located on the inner wall of the air intake hood (7). The air outlet assembly includes an air outlet duct (5) and a windproof cover (6). One end of the air outlet duct (5) is connected to the air outlet end (17) of the exhaust chamber, and the windproof cover (6) is threadedly installed at the outlet end of the air outlet duct (5) away from the housing (1). The filter cleaning assembly includes a filter screen (11) and a scraper (13), both of which are installed in the air inlet cavity. The filter screen (11) covers the flow channel (18), and the side wall of the scraper (13) abuts against the filter screen (11).
2. The high-temperature dehumidification fan for persimmon production according to claim 1, characterized in that: A fixed frame (16) is fixedly connected inside the exhaust cavity. An impeller (15) is connected to one end of the fixed frame (16). The impeller (15) is connected to an external power source through a wire.
3. The high-temperature dehumidification fan for persimmon production according to claim 1, characterized in that: The top of the housing (1) has a groove that communicates with the air inlet cavity. The filter cleaning component is installed in the air inlet cavity through the groove. The top of the groove is connected to a top cover (2) by bolts.
4. A high-temperature dehumidification fan for persimmon production according to claim 3, characterized in that: The side wall of the air inlet cavity is provided with an installation groove. Both ends of the scraper (13) are located in the installation groove, and a screw (14) is connected to the installation groove. The screw (14) passes through the scraper (13) and is threadedly connected to the scraper (13). The top end of the screw (14) is located in the groove.
5. A high-temperature dehumidification fan for persimmon production according to claim 4, characterized in that: The bottom of the housing (1) is slidably connected to a sliding cover (3), and the left and right ends of the sliding cover (3) are connected to sliders (9). The bottom of the housing (1) is provided with a groove (10) corresponding to the slider (9), and the filter cleaning component is located above the sliding cover (3).
6. A high-temperature dehumidification fan for persimmon production according to claim 1, characterized in that: The air guide plate (8) is provided in multiple ways, and the multiple air guide plates (8) are evenly distributed in a spiral shape on the inner wall of the air inlet cover (7). The inner wall of the air inlet cover (7) is also provided with a dustproof net (4). The dustproof net (4) is located on the side of the air guide plate (8) away from the air inlet cavity, and the dustproof net (4) is detachably connected to the inner wall of the air inlet cover (7) by a buckle.
7. A high-temperature dehumidification fan for persimmon production according to claim 1, characterized in that: The inner wall of the air outlet duct (5) is provided with a flow guiding protrusion (19). There are multiple flow guiding protrusions (19), and the multiple flow guiding protrusions (19) are evenly distributed along the length direction of the air outlet duct (5). The flow guiding protrusions (19) have an arc-shaped structure.