A heat and moisture exchange filter with internal lumen split flow directing structure

Abstract

This utility model discloses a heat and humidity exchange filter with an internal cavity diversion and guiding structure, relating to the field of heat and humidity exchange filter technology. It includes a filter top cover with an air inlet at the center of its top surface, a lower filter cover inserted at the bottom of the top cover, and an air outlet at the center of the bottom surface of the lower filter cover. The top cover contains multiple chambers, each with a limiting ring at the upper end of its inner wall, the bottom surface of which a heat and humidity exchange medium is abutted against. This utility model utilizes the cooperation of a pressure block, connecting plate, connecting column, and locking block on the outer wall of the filter top cover with an L-shaped locking groove on the inner wall of the lower filter cover. When the top cover is pressed down, the locking block slides along the groove under pressure, compressing the spring. When the locking block slides to a specific position in the groove, the spring resets, pushing the locking block to lock. This ultimately solves the problems of poor sealing performance, interference fit, and inconvenient disassembly due to strong adhesive bonding in traditional threaded connections, improving the ease of installation and disassembly and the reliability of sealing of the heat and humidity exchange filter.

Description

Technical Field

[0001] This utility model relates to the field of heat and humidity exchange filter technology, and in particular to a heat and humidity exchange filter with an internal cavity diversion and guiding structure. Background Technology

[0002] In the fields of medical respiratory equipment, air purification systems and humidity and heat environment control, heat and humidity exchange filters are widely used to realize heat and humidity exchange between gases or between gases and liquids, so as to achieve the purpose of regulating humidity, recovering energy, and filtering impurities. However, traditional heat and humidity exchange filters have many problems in actual use.

[0003] Existing heat and moisture exchange filters mostly use threaded connections for the upper and lower covers. This connection method has significant drawbacks. After long-term use, the threads are prone to increased gaps due to dust and impurities accumulation or vibrations caused by airflow impacts, resulting in poor sealing performance and air leakage. This not only affects the filtration effect but may also lead to energy waste. To improve sealing performance, some manufacturers have adopted interference fits or strong adhesive bonding, which offer better sealing. However, this introduces new problems. Interference fits require greater disassembly force, which can easily damage filter components during disassembly. Strong adhesive bonding makes the filter difficult to disassemble, preventing timely replacement of the filter media and heat and moisture exchange media, greatly increasing maintenance costs and operational difficulty. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heat and moisture exchange filter with an internal cavity diversion and guiding structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heat and humidity exchange filter with an internal cavity diversion and guiding structure, including a filter cover, an air inlet in the middle of the top surface of the filter cover, a filter cover inserted at the bottom end of the filter cover, an air outlet in the middle of the bottom surface of the filter cover, a plurality of chambers inside the filter cover, a limiting ring provided at the upper end of the inner wall of each chamber, and a heat and humidity exchange medium abutting against the bottom surface of the limiting ring.

[0006] Preferably, a sealing gasket is provided on the inner wall of the lower cover of the filter, and a filter screen is fixedly attached to the sealing gasket, with the bottom end of the heat exchange medium abutting against the top surface of the filter screen.

[0007] Preferably, two slots are symmetrically provided on the inner wall of the lower cover of the filter, and two pressure blocks are symmetrically provided on the outer wall of the upper cover of the filter. An installation groove is provided inside the upper cover of the filter at the pressure block. The installation groove has a C-shaped cross section. A connecting plate is movably provided in the installation groove. The upper end of one side of the connecting plate is fixedly connected to the pressure block, and a connecting post is fixedly connected to the lower end of one side of the connecting plate.

[0008] Preferably, one end of the connecting column is fixedly provided with a corresponding slot and a locking block. One end of the locking block extends out of the outer wall of the filter cover through the lower end of the mounting groove. A spring is sleeved on the connecting column. An abutment plate is fixedly provided between the connecting column and the connecting plate in the mounting groove. A through hole for the connecting column to pass through is opened in the middle of the abutment plate. One end of the spring abuts against the abutment plate, and the other end of the spring abuts against the locking block.

[0009] Preferably, the slot is located on the inner wall of the lower cover of the filter and is L-shaped.

[0010] Preferably, the air inlet is provided with a filter medium.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the cooperation of the pressure block, connecting plate, connecting column, and locking block on the outer wall of the filter upper cover with the L-shaped locking groove on the inner wall of the filter lower cover. When the filter upper cover is pressed down, the locking block is squeezed and slides along the groove, compressing the spring. When the locking block slides to a specific position in the groove, the spring resets and pushes the locking block to lock, facilitating quick installation of the filter upper and lower covers, improving connection efficiency, and enabling rapid assembly. Furthermore, the cooperation between the sealing gasket and the filter screen, with the sealing gasket filling the gaps and the filter screen providing support, enhances the sealing performance at the connection, improving the sealing effect and preventing air leakage. When disassembly is required, pressing the pressure block separates the locking block from the groove, allowing for easy disassembly. Through the above structural cooperation, the problems of poor sealing performance, interference fit, and inconvenient disassembly of traditional threaded connections and strong adhesive bonding are ultimately solved, improving the convenience of installation and disassembly of heat and humidity exchange filters and the reliability of their sealing. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the filter lower cover proposed in this utility model;

[0015] Figure 3This is a schematic cross-sectional view of the filter cover proposed in this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the overall structure proposed in this utility model.

[0017] The numbers in the diagram are: 1. Filter top cover; 2. Filter bottom cover; 3. Air inlet; 4. Air outlet; 5. Sealing gasket; 6. Slot; 7. Filter screen; 8. Filter medium; 9. Limiting ring; 10. Moisture and heat exchange medium; 11. Pressure block; 12. Locking block; 13. Spring; 14. Connecting plate; 15. Connecting column. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4This utility model discloses a heat and humidity exchange filter with an internal cavity diversion and guiding structure, comprising a filter top cover 1, an air inlet 3 in the center of the top surface of the filter top cover 1, a filter bottom cover 2 inserted into the bottom surface of the filter top cover 1, an air outlet 4 in the center of the bottom surface of the filter bottom cover 2, and multiple compartments inside the filter top cover 1. Each compartment has a limiting ring 9 at the upper end of its inner wall, with the top surface of the limiting ring 9 abutting against a heat and humidity exchange medium 10. The filter top cover 1 and filter bottom cover 2, made of high-strength polypropylene (PP) material, form a robust and corrosion-resistant complete gas flow space. The multiple compartments, in conjunction with the limiting rings 9, facilitate the heat and humidity exchange of the hydrophilic polyester fiber material. The heat exchange medium 10 is positioned and supported. This material has a large specific surface area, allowing for uniform gas contact. Leveraging the chemical corrosion resistance and mechanical strength of high-strength polypropylene, as well as the properties of hydrophilic polyester fibers, it significantly improves the efficiency and uniformity of heat and moisture exchange, achieving an efficiency of over 85%, thus enabling highly efficient heat and moisture exchange. A sealing gasket 5 is provided on the inner wall of the filter lower cover 2, with a filter screen 7 fixedly attached to it. The bottom end of the heat and moisture exchange medium 10 abuts against the top surface of the filter screen 7. The sealing gasket 5, made of silicone rubber, works in conjunction with the woven filter screen 7 made of 304 stainless steel. The silicone rubber sealing gasket 5 possesses excellent sealing performance and high resistance to high temperatures. The low-temperature performance and anti-aging ability effectively fill the gap between the filter upper cover 1 and the filter lower cover 2, preventing gas leakage; the 304 stainless steel filter screen 7 has high strength, good filtration effect and is not easy to rust, and performs secondary filtration on the gas after passing through the heat exchange medium 10. The combination of the two significantly improves the sealing of the connection and the gas filtration effect, further purifying the gas, and thus achieving good sealing and high-efficiency filtration functions; there are two symmetrical slots 6 on the inner wall of the filter lower cover 2, and two symmetrical pressure blocks 11 on the outer wall of the filter upper cover 1. An installation groove is opened in the filter upper cover 1 at the pressure block 11. The installation groove has a C-shaped cross section. The device includes a connecting plate 14, with one upper side of the connecting plate 14 fixedly connected to the pressure block 11, and a connecting post 15 fixedly connected to the lower side of the connecting plate 14. The slot 6 cooperates with the pressure block 11, the connecting plate 14, and the connecting post 15, all made of reinforced nylon 66. Reinforced nylon 66 has high strength and toughness, is wear-resistant, and is not easily deformed. During installation, pressing the pressure block 11 can drive the connecting structure to move. Due to its good mechanical properties, it is easy to quickly install the filter upper cover 1 and the filter lower cover 2, improving installation efficiency. The C-shaped mounting groove provides space for the connecting plate 14 to move, ensuring the flexibility of the connecting structure and enabling convenient assembly.

[0020] In this utility model, a corresponding locking block 12 is fixedly connected to one end of the connecting post 15 and the corresponding locking slot 6. One end of the locking block 12 extends out of the outer wall of the filter cover 1 through the lower end of the mounting groove. A spring 13 is sleeved on the connecting post 15. An abutment plate is fixedly connected to the mounting groove between the connecting post 15 and the connecting plate 14. A through hole for the connecting post 15 to pass through is opened in the middle of the abutment plate. One end of the spring 13 abuts against the abutment plate, and the other end of the spring 13 abuts against the locking block 12. The locking block 12 and the connecting post 15 are made of reinforced nylon 66 material, and are used in conjunction with 65M The spring 13 and the abutment plate are made of 65Mn spring steel. 65Mn spring steel has good elasticity and a long fatigue life. Spring 13 provides elastic force to ensure that the locking block 12 can be tightly engaged in the slot 6. Utilizing the elasticity of 65Mn spring steel and the strength of reinforced nylon 66, the stability of the connection between the filter upper cover 1 and the filter lower cover 2 is improved. During disassembly, pressing the pressure block 11 compresses the spring 13, causing the locking block 12 to disengage from the slot 6, facilitating disassembly and improving ease of removal. This achieves both a stable connection and convenient disassembly. The slot 6 is located in the filter... The inner wall of the lower cover 2 is L-shaped; the L-shaped groove 6 cooperates with the locking block 12. During installation, the locking block 12 slides along the L-shaped groove 6 and rotates to lock into a deeper part. Compared with ordinary straight grooves, this further enhances the tightness and stability of the connection between the filter upper cover 1 and the filter lower cover 2. Combined with the strength and toughness of the locking block 12 made of reinforced nylon 66 material, and the robustness of the high-strength polypropylene material of the filter upper and lower covers, the reliability of the overall structure is improved, thus enabling a more stable connection function. The air inlet 3 is equipped with a filter medium 8. The air inlet 3 uses glass fiber filter paper as the filter medium 8. This material has a high filtration efficiency, with a filtration efficiency of 99% for particles larger than 0.3μm. It can perform preliminary filtration of the gas entering the filter, intercept larger particulate impurities, reduce the impact of impurities on the heat exchange medium 10 and the filter screen 7, extend the service life of the heat exchange medium 10 made of hydrophilic polyester fiber and the 304 stainless steel filter screen 7, and improve the purity of the gas entering the filter, thus achieving the function of preliminary filtration to protect the internal structure.

[0021] Working principle: When using this utility model, first invert the filter cover 1 and place the heat exchange medium 10 above the limiting ring 9 for positioning. Then, slowly press down the filter cover 2, aligning it with the filter cover 1. At this time, the outer wall pressing block 11 of the filter cover 1 moves the connecting plate 14, connecting column 15, and locking block 12 downward. The locking block 12 is squeezed by the L-shaped groove 6 on the inner wall of the filter cover 2, causing the connecting column 15 to compress the spring 13 and slide along the groove 6. When the locking block 12 slides to the bottom of the groove 6, rotate the filter cover 1 clockwise. The locking block 12 slides and embeds itself along the deeper groove at the end of the groove 6, further compressing the spring 13. After it is in place, the spring 13 resets and pushes the locking block 12 to lock tightly. The gasket 5 ensures a secure connection and a tight seal, enhancing the airtightness. Gas containing heat and humidity enters through the air inlet 3 at the center of the top surface of the filter cover 1. It is initially filtered by the filter medium 8 inside the air inlet 3, then flows into multiple compartments within the filter cover 1 for distribution, uniformly contacting the heat and moisture exchange medium 10 for heat and moisture exchange. The gas then flows downwards for secondary filtration through the filter screen 7, and finally exits through the air outlet 4 at the center of the bottom surface of the filter cover 2. During maintenance, rotate the filter cover 1 counterclockwise to disengage the locking block 12, returning it to the bottom of the locking groove 6. Press the pressure block 11 to activate the connecting structure, separating the locking block 12 from the locking groove 6. This allows the filter cover 1 to be removed and the internal medium replaced. The device is now in use.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat and moisture exchange filter with an internal cavity shunt guiding structure, comprising a filter upper cover (1), characterized in that: An air inlet (3) is provided in the middle of the top surface of the filter cover (1), and a filter lower cover (2) is inserted at the bottom end of the filter cover (1). An air outlet (4) is provided in the middle of the bottom surface of the filter lower cover (2). Multiple compartments are provided inside the filter cover (1). A limiting ring (9) is provided at the upper end of the inner wall of each compartment. A heat exchange medium (10) is abutted against the bottom surface of the limiting ring (9). Two slots (6) are symmetrically provided on the inner wall of the filter lower cover (2), and two pressure blocks (11) are symmetrically provided on the outer wall of the filter upper cover (1). An installation groove is provided inside the filter upper cover (1) at the pressure block (11). The installation groove has a C-shaped cross section. A connecting plate (14) is movably provided in the installation groove. The upper end of one side of the connecting plate (14) is fixedly connected to the pressure block (11), and a connecting column (15) is fixedly connected to the lower end of one side of the connecting plate (14). One end of the connecting column (15) is fixedly connected to a corresponding slot (6) and a locking block (12) is provided. One end of the locking block (12) extends out of the outer wall of the filter cover (1) through the lower end of the mounting groove. A spring (13) is sleeved on the connecting column (15). The mounting groove is located between the connecting column (15) and the connecting plate (14) and a connecting plate is fixedly connected. A through hole for the connecting column (15) to pass through is opened in the middle of the connecting plate. One end of the spring (13) abuts against the connecting plate and the other end of the spring (13) abuts against the locking block (12).

2. The heat and moisture exchange filter with internal cavity shunt directing structure according to claim 1, characterized in that: A sealing gasket (5) is provided on the inner wall of the filter cover (2), and a filter screen (7) is fixedly attached to the sealing gasket (5). The bottom end of the heat exchange medium (10) abuts against the top surface of the filter screen (7).

3. The heat and moisture exchange filter with internal cavity shunt directing structure according to claim 1, wherein: The slot (6) is located on the inner wall of the filter cover (2) and is L-shaped.

4. A heat and humidity exchange filter with an internal cavity diversion and guiding structure according to claim 1, characterized in that: The air inlet (3) is equipped with a filter medium (8).

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