Heat pump drying device with adaptive frequency conversion function

Abstract

The utility model discloses a kind of heat pump drying equipment with self-adapting frequency conversion function, it is related to heat pump technical field, including heat pump host computer, protective net, apron, motor and cleaning brush, the air filter mechanism is provided in heat pump host computer top, the air filter mechanism includes apron, motor, cleaning brush, electrostatic grid and first air inlet cover, the apron is installed in first air inlet cover top, the electrostatic grid is arranged in first air inlet cover side edge, the guide rod is installed in first air inlet cover top with lead screw, the motor is installed in lead screw side edge, the cleaning brush is installed in lead screw side edge, motor drives lead screw rotation in first air inlet cover side edge, in combination with the constraint of two symmetrical guide rods, make cleaning brush reciprocate along straight line, realize the automatic cleaning of electrostatic grid, reduce manual operation.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, specifically a heat pump drying device with adaptive frequency conversion function. Background Technology

[0002] Heat pump drying equipment utilizes the reverse Carnot cycle to extract heat from the surrounding environment and transfer it to the object being heated. It mainly consists of four parts: a finned evaporator, a compressor, a finned condenser, and an expansion valve. However, existing heat pump drying equipment has some shortcomings, such as: The heat pump drying equipment described in application number CN202323602019.7 integrates a main drying unit, a sealing component, a drying component, a dehumidification component, a functional component, a circulation component, and an exhaust component. By constructing a hot air circulation dehumidification system, it can achieve repeated and efficient drying of clothing. However, in actual operation, due to the complexity of the external environment, the lack of protective cleaning components in this equipment gradually becomes apparent. When the equipment is running, the suction generated by the fan will draw in light floating objects such as willow catkins, dust, and hair, and even small insects and debris into the air intake system. These debris will accumulate in the air intake, filter, and air duct, causing blockage of the air intake channel, resulting in a sharp reduction in the airflow inside the equipment, which in turn affects the heat exchange efficiency and significantly reduces the drying speed. At the same time, once floating objects enter the equipment, they may become entangled on the surface of the finned heat exchanger, damaging the integrity of the fin structure, causing the fins to deform and collapse. This not only reduces the heat transfer performance but also increases airflow resistance, and may even cause abnormal fan load, accelerate the wear of equipment components, shorten the service life of the equipment, and seriously affect the stable operation and safety of the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a heat pump drying device with adaptive frequency conversion function, so as to solve the problem that the lack of protective cleaning components in existing market equipment mentioned in the background art is becoming increasingly apparent.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a heat pump drying device with adaptive frequency conversion function, comprising a heat pump host, a protective net, a cover plate, a motor, and a cleaning brush; A filtration mechanism is provided above the heat pump unit. The filtration mechanism includes a cover plate, a motor, a cleaning brush, an electrostatic grid, and a first air intake hood. The cover plate is installed above the first air intake hood, the electrostatic grid is located on the side of the first air intake hood, the guide rod and the lead screw are installed above the first air intake hood, the motor is installed on the side of the lead screw, and the cleaning brush is installed on the side of the lead screw.

[0005] As a preferred technical solution of this utility model, the heat pump host adopts an existing heat pump structure including a compressor, evaporator, condenser, and throttling device assembly, and the top of the heat pump host is bolted with a protective net. The above technical solution utilizes the existing heat pump structure, which includes a compressor, evaporator, condenser, and throttling device, on the top of the heat pump unit. This allows for the stable operation of the core functions of the heat pump system by leveraging mature technologies, reducing the technical difficulty of research and development and production. The protective netting at the top is secured with bolts, effectively preventing external debris from entering the unit and avoiding damage to components. At the same time, the bolt connection method facilitates the installation and removal of the protective netting, making subsequent cleaning and maintenance easier and extending the service life of the equipment.

[0006] As a preferred technical solution of this utility model, the heat pump host is fixedly connected to the side of the first air intake cover, and the first air intake cover is fixedly connected to the upper part of the limiting post. There are six limiting posts in total, which are symmetrically distributed. The limiting post is divided into upper and lower parts. The upper part of the limiting post is a threaded structure, and the lower part of the limiting post is a round rod structure. The upper part of the first air intake cover is connected to the cover plate by bolts through the limiting post. Using the above technical solution, the side of the heat pump unit is fixedly connected to the first air intake shroud, providing a stable channel for air to enter the equipment and ensuring smooth air intake. The six symmetrically distributed limiting posts above the first air intake shroud have threaded structures and round rod structures at the top and bottom, respectively. The lower round rod structure can accurately guide and limit the cover plate, ensuring the accurate installation position of the cover plate. The upper threaded structure is firmly bolted to the cover plate, which not only ensures the stability of the cover plate installation, but also facilitates quick disassembly and assembly for inspection of the internal components of the first air intake shroud, improving the convenience of maintenance.

[0007] As a preferred technical solution of this utility model, a motor is fixedly connected to the center line of the side of the first air intake cover, the output shaft of the motor is fixedly connected to the lead screw, and the lead screw is rotatably connected to the first air intake cover. A guide rod is fixedly connected to the inner side of the first air intake cover, and there are two guide rods symmetrically distributed. Using the above technical solution, the motor fixedly connected to the center line of the side of the first air intake hood has its output shaft fixedly connected to the lead screw, and the lead screw is rotatably connected to the first air intake hood. This can stably drive the lead screw to rotate, providing reliable power for the movement of the cleaning brush. The two symmetrically distributed guide rods can effectively guide the movement of the cleaning brush, preventing the cleaning brush from deviating during movement, ensuring the cleaning brush's cleaning trajectory on the electrostatic grid is stable, ensuring uniform and thorough cleaning, maintaining the filtration effect of the electrostatic grid, and ensuring smooth air intake.

[0008] As a preferred embodiment of this utility model, the guide rod is slidably connected to the cleaning brush, and the cleaning brush is threadedly connected to the lead screw, and the cleaning brush is slidably connected to the electrostatic grid; The above technical solution, with the guide rod and cleaning brush slidably connected and the cleaning brush and lead screw threadedly connected, allows the cleaning brush to make linear reciprocating motion under the constraint of the guide rod when the lead screw rotates, thus achieving automatic cleaning of the electrostatic grid and reducing manual operation. The sliding connection between the cleaning brush and the electrostatic grid ensures full contact between the two, which can effectively remove dust and impurities adsorbed on the electrostatic grid, prevent grid blockage from affecting the air intake, ensure stable operation of the equipment, and reduce maintenance costs.

[0009] As a preferred technical solution of this utility model, the electrostatic grid has a semi-circular structure at both ends, and the spacing of the electrostatic grid is the same as the size of the comb teeth of the cleaning brush. The cleaning roller is rotatably connected above the first air intake hood, and the first limiting rod is slidably connected to the side of the electrostatic grid. The first limiting rod passes through the first air intake hood to lock the electrostatic grid. Using the above technical solution, the semi-circular structure at both ends of the electrostatic grille can better fit the shape of the first air intake hood, ensuring that there are no dead angles in the air intake filtration; the spacing of the opening on the inner side of the electrostatic grille is the same as the size of the comb teeth of the cleaning brush, so that the cleaning brush can be accurately embedded in the gap of the grille to thoroughly remove debris; the cleaning brush rotatably connected above the first air intake hood can assist in cleaning the top of the grille, improving the overall cleaning effect; the first limiting rod slidably connected to the side of the electrostatic grille can quickly realize the locking and unlocking of the grille, making it convenient to clean and replace the electrostatic grille, enhancing the flexibility of equipment use and the convenience of maintenance.

[0010] As a preferred technical solution of this utility model, the second air intake cover is slidably connected to the second limiting rod on the side, and the bottom of the second limiting rod has an external thread structure; By adopting the above technical solution, the second limiting rod, which is slidably connected to the side of the second air intake cover, has an external thread structure at the bottom that facilitates fixed connection with related components. This not only ensures the stable installation of the second air intake cover, but also allows for adjustment of the position of the second limiting rod through sliding, adapting to different installation scenarios and improving the convenience of installing and disassembling the second air intake cover. It also facilitates the inspection and maintenance of the inside of the air intake cover, ensuring the stable operation of the equipment's air intake function.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The heat pump unit adopts the existing mature heat pump structure, which can rely on existing technology to ensure the stability of core functions and reduce the difficulty of research and development and production; the protective net fixed by bolts on the top can block the entry of debris, avoid damage to internal components, and facilitate disassembly and maintenance, thus extending the service life of the equipment. At the same time, the heat pump unit is fixedly connected to the first air intake cover, and with the help of six symmetrically distributed limiting columns, the cover plate can be accurately installed and firmly connected, which not only ensures the stability of the air intake channel, but also improves the ease of disassembly and assembly of the air filter mechanism, making internal maintenance convenient. 2. The motor-driven lead screw on the side of the first air intake hood rotates, and combined with the constraint of two symmetrical guide rods, the cleaning brush moves back and forth in a straight line, realizing automatic cleaning of the electrostatic grid and reducing manual operation. The cleaning brush is slidably connected to the electrostatic grid, and the spacing inside the grid matches the size of the brush teeth, which can thoroughly remove adsorbed dust and impurities, prevent grid blockage, ensure smooth air intake, and maintain filtration efficiency. In addition, the semi-circular structure at both ends of the electrostatic grid is adapted to the shape of the air intake hood to ensure that there are no dead corners in filtration. The first limit rod facilitates the quick disassembly and assembly of the grid and improves maintenance flexibility. 3. The second air intake cover is installed and fixed by a second limiting rod that slides on the side. Its bottom external thread structure ensures installation stability and can be adjusted to adapt to different scenarios, improving the ease of installation and disassembly of the air intake cover, facilitating internal inspection and maintenance, and ensuring stable air intake function. This design works in conjunction with the structure of the first air intake cover to make the operation and maintenance of the entire air intake system more efficient and reduce equipment downtime for maintenance. 4. In the overall structure, the various components of the air filtration mechanism, cleaning brushes, motors, etc., work together with the heat pump host to achieve the synergistic effect of air intake filtration, automatic cleaning, and stable operation. The automatic cleaning mechanism reduces the cost of manual cleaning, the protection and limit structure ensures the safety and stability of the equipment operation, and the modular design reduces the difficulty of replacing and maintaining various components, thereby improving the overall practicality and economy of the equipment. Attached Figure Description

[0012] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the motor and cleaning brush structure of this utility model; Figure 3 This is a schematic diagram of the limiting rod and lead screw structure of this utility model; Figure 4 This is a schematic diagram of the structure of the first air intake cover and the limiting rod of this utility model; Figure 5 This is a schematic diagram of the limiting rod and the first limiting rod of this utility model; Figure 6 This is a schematic diagram of the second air intake cover and the second limiting rod of this utility model.

[0013] In the diagram: 1. Heat pump unit; 2. Protective net; 3. Cover plate; 4. Motor; 5. Cleaning roller; 6. Electrostatic grid; 7. First air intake hood; 8. Limiting post; 9. Lead screw; 10. Guide rod; 11. First limiting rod; 12. Cleaning brush; 13. Second air intake hood; 14. Second limiting rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-6 The present invention provides a heat pump drying device with adaptive frequency conversion function. Example

[0016] For details, please refer to the following: Figures 1-5 It includes a heat pump host 1, a protective net 2, a cover plate 3, a motor 4, a cleaning roller 5, an electrostatic grid 6, a first air intake hood 7, a limiting post 8, a lead screw 9, a guide rod 10, a first limiting rod 11, a cleaning brush 12, a second air intake hood 13, and a second limiting rod 14. The heat pump unit 1 adopts a standard heat pump system architecture, integrating a hermetic compressor, microchannel evaporator, coaxial sleeve condenser and electronic expansion valve throttling assembly to form a complete heat exchange circuit. The top is equipped with a stainless steel protective net 2, which is fixed by a hexagonal bolt group. This effectively prevents external debris from entering the unit and avoids damage to the components. At the same time, the bolt connection method facilitates the disassembly and assembly of the protective net 2, making subsequent cleaning and maintenance convenient and extending the service life of the equipment. The first air intake shroud 7 is fixedly connected to the side of the heat pump host 1, providing a stable channel for air to enter the equipment and ensuring smooth air intake. There are six symmetrically distributed limiting posts 8 on the top of the first air intake shroud 7. The upper and lower parts are threaded structures and round rod structures, respectively. The lower round rod structure plays a precise guiding and limiting role for the cover plate 3, ensuring that the cover plate 3 is installed in an accurate position. The upper threaded structure is firmly bolted to the cover plate 3, which not only ensures the stability of the cover plate 3 installation, but also facilitates quick disassembly and assembly for inspection of the internal components of the first air intake shroud 7, improving the convenience of maintenance. The motor 4 is fixedly connected to the center line of the side of the first air intake hood 7. Its output shaft is fixedly connected to the lead screw 9, and the lead screw 9 is rotatably connected to the first air intake hood 7. It can stably drive the lead screw 9 to rotate, providing reliable power for the movement of the cleaning brush 12. Two symmetrically distributed guide rods 10 are fixedly connected to the inside of the first air intake hood 7, which can effectively guide the movement of the cleaning brush 12, prevent the cleaning brush 12 from deviating during the movement, ensure that the cleaning trajectory of the cleaning brush 12 on the electrostatic grid 6 is stable, ensure uniform and thorough cleaning, maintain the filtration effect of the electrostatic grid 6, and ensure smooth air intake. The structure of the guide rod 10 slidingly connected to the cleaning brush 12 and the cleaning brush 12 threadedly connected to the lead screw 9 allows the cleaning brush 12 to make linear reciprocating motion under the constraint of the guide rod 10 when the lead screw 9 rotates, thereby realizing automatic cleaning of the electrostatic grid 6, reducing manual operation. The sliding connection between the cleaning brush 12 and the electrostatic grid 6 ensures full contact between the two, which can effectively remove dust and impurities adsorbed on the electrostatic grid 6, prevent grid blockage from affecting the air intake, ensure stable operation of the equipment, and reduce maintenance costs. The electrostatic grille 6 is located on the side of the first air intake hood 7. Its two ends are semi-circular structures, which can better fit the shape of the first air intake hood 7 and ensure that there are no dead corners in the air intake filtration. The spacing of the opening on the inner side of the electrostatic grille 6 is the same as the size of the comb teeth of the cleaning brush 12, so that the cleaning brush 12 can be accurately embedded in the grille gap and thoroughly remove debris. Driven by the motor 4 built into the cleaning roller 5 above the first air intake hood 7, it can assist in cleaning the top of the grille and improve the overall cleaning effect. The first limiting rod 11 is slidably connected to the side of the electrostatic grille 6, which can quickly realize the engagement and disassembly of the grille, making it convenient to clean and replace the electrostatic grille 6, and enhancing the flexibility of equipment use and the convenience of maintenance. Example

[0017] For details, please refer to the following: Figure 6 The difference between this embodiment and embodiment one is that the second air intake cover 13 is slidably connected to the second limiting rod 14 on the side, and the bottom of the second limiting rod 14 has an external thread structure. The second limiting rod 14, which is slidably connected to the side of the second air intake cover 13, has an external thread structure at its bottom that facilitates fixed connection with related components. This ensures the stable installation of the second air intake cover 13 and allows for adjustment of the position of the second limiting rod 14 through sliding, adapting to different installation scenarios and improving the convenience of installing and disassembling the second air intake cover 13. It also facilitates the inspection and maintenance of the inside of the air intake cover, ensuring the stable operation of the equipment's air intake function.

[0018] Working Principle: When using a heat pump drying device with adaptive frequency conversion function, the air filtration mechanism above the heat pump main unit 1 works in conjunction with the heat pump system. Outside air enters the device through the first air inlet hood 7 and the second air inlet hood 13. The electrostatic grid 6 inside the first air inlet hood 7 filters the air and adsorbs dust and other impurities. The motor 4 drives the lead screw 9 to rotate, and under the constraint of the guide rod 10, the cleaning brush 12 moves back and forth in a straight line to automatically clean the electrostatic grid 6. The cleaning roller 5, driven by the built-in motor, removes the cleaning brush. 12. Surface deposits are removed, and filtered air enters the heat pump host 1. The heat pump host 1 adopts an existing heat pump structure including a compressor, evaporator, condenser, and throttling device assembly. Heat exchange is achieved through refrigerant circulation to provide the required heat for drying operations. The cover plate 3 is fixed to the first air intake hood 7 by the limiting post 8, which plays a protective and sealing role. The protective net 2 blocks external debris from entering the interior of the heat pump host 1. The second air intake hood 13 is fixed by the second limiting rod 14 and works with the first air intake hood 7 to ensure smooth air intake. The electrostatic grille 6 can be quickly disassembled and installed through the first limiting rod 11 for easy maintenance. Temperature and humidity sensors are installed inside the second air intake shroud 13. These sensors can monitor the temperature and humidity of the air entering the equipment in real time and transmit the detected signals to the frequency converter built into the heat pump host 1. When the intake air temperature deviates from the set range, the inverter controller will automatically adjust the compressor's operating frequency: if the temperature is below the lower limit of the set range, the controller will increase the compressor frequency to accelerate the refrigerant circulation, increase heat output, and cause the temperature to rise; if the temperature is above the upper limit of the set range, the controller will decrease the compressor frequency to reduce heat output and cause the temperature to fall. When the intake air humidity is detected to deviate from the set range, the frequency converter will also adjust the compressor operating frequency: if the humidity is higher than the upper limit of the set range, the controller will increase the compressor frequency to accelerate the condensation and heat release rate, promote water vapor evaporation, and reduce the humidity; if the humidity is lower than the lower limit of the set range, the controller will reduce the compressor frequency to reduce energy consumption and avoid the material from becoming too dry.

[0019] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat pump drying device with adaptive frequency conversion function, comprising a heat pump main unit (1), a guide rod (10), and a second air inlet shroud (13); characterized in that: A filtration mechanism is provided above the heat pump host (1). The filtration mechanism includes a cover plate (3), a motor (4), a cleaning brush (12), an electrostatic grid (6), and a first air intake hood (7). The cover plate (3) is installed above the first air intake hood (7). The electrostatic grid (6) is located on the side of the first air intake hood (7). The guide rod (10) and the lead screw (9) are installed above the first air intake hood (7). The motor (4) is installed on the side of the lead screw (9). The cleaning brush (12) is installed on the side of the lead screw (9).

2. A heat pump drying device with adaptive frequency conversion function according to claim 1, characterized in that, The heat pump host (1) adopts an existing heat pump structure above it, including a compressor, evaporator, condenser, and throttling device assembly, and a protective net (2) is bolted to the top of the heat pump host (1).

3. A heat pump drying device with adaptive frequency conversion function according to claim 1, characterized in that, The heat pump host (1) is fixedly connected to the side of the first air intake shroud (7), and the first air intake shroud (7) is fixedly connected to the upper part of the limiting post (8). There are six limiting posts (8) in total, which are symmetrically distributed. The limiting post (8) is divided into upper and lower parts. The upper part of the limiting post (8) is a threaded structure, and the lower part of the limiting post (8) is a round rod structure. The upper part of the first air intake shroud (7) is bolted to the cover plate (3) through the limiting post (8).

4. The heat pump drying apparatus having a self-adapting frequency conversion function according to claim 1, characterized in that, A motor (4) is fixedly connected to the center line of the side of the first air intake hood (7). The output shaft of the motor (4) is fixedly connected to the lead screw (9), and the lead screw (9) is rotatably connected to the first air intake hood (7). A guide rod (10) is fixedly connected to the inner side of the first air intake hood (7), and there are two guide rods (10) symmetrically distributed.

5. A heat pump drying device with adaptive frequency conversion function according to claim 1, characterized in that, The guide rod (10) is slidably connected to the cleaning brush (12), and the cleaning brush (12) is threadedly connected to the lead screw (9). The cleaning brush (12) is slidably connected to the electrostatic grid (6).

6. A heat pump drying device with adaptive frequency conversion function according to claim 1, characterized in that, The electrostatic grid (6) has a semi-circular structure at both ends, and the spacing of the electrostatic grid (6) is the same as the size of the comb teeth of the cleaning brush (12). The cleaning roller (5) is rotatably connected above the first air intake hood (7), and the first limiting rod (11) is slidably connected to the side of the electrostatic grid (6). The first limiting rod (11) passes through the first air intake hood (7) to lock the electrostatic grid (6).

7. A heat pump drying device with adaptive frequency conversion function according to claim 1, characterized in that, The second air intake cover (13) is slidably connected to the second limiting rod (14) on the side, and the bottom of the second limiting rod (14) has an external thread structure.

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