An air source heat pump system filtration device

Abstract

The utility model relates to heat pump system filtering technical field, concretely disclose an air source heat pump system filter device, air source heat pump system filter device, including filter box, the inner chamber of filter box is provided with filter assembly, and filter assembly includes the bearing ring, and the inner wall of bearing ring is fixedly connected with filter box, and the top of bearing ring is provided with four activity axes at equal distance, and the inner chamber rotation is connected with the rotating rod of activity axis, and the top fixed setting of rotating rod has the clamping plate, and the top of bearing ring is provided with four activity barrels at equal distance. Through the cooperation structure of bearing ring, activity axis, rotating rod, clamping plate, activity barrel and top rod, realize the quick installation and disassembly of filter screen, utilize reset spring and spacing disc to ensure the fixed stability of filter screen simultaneously, solved the problem that traditional filter device dismouting is complicated, and maintenance efficiency is low and is easy to loosen under the vibration condition, has the advantages such as convenient quick disassembly filter screen, improve maintenance efficiency and enhance the stability of installation.

Description

Technical Field

[0001] This utility model relates to the field of heat pump system filtration technology, specifically to a filtration device for an air source heat pump system. Background Technology

[0002] During installation, operation, and maintenance, air source heat pumps are prone to contamination of the refrigerant circulation piping with impurities such as moisture, dust, metal shavings, and grease. These impurities, carried by the refrigerant, can cause abnormal compressor wear, blockage of the capillary tube or electronic expansion valve, and a significant reduction in heat exchange efficiency, severely impacting system reliability, energy efficiency, and lifespan. While traditional filtration devices can filter impurities, their fixed installation requires specialized tools for disassembly and cleaning, making the process cumbersome and time-consuming. This inconvenience, especially in applications requiring frequent cleaning, severely restricts maintenance efficiency and increases system downtime. Furthermore, the stability of traditional filter installation structures is insufficient, making them prone to loosening under system vibration, thus affecting filtration effectiveness. Therefore, existing technologies urgently need improvement to address these issues. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a filtration device for an air source heat pump system, which has the advantages of easy and quick disassembly and assembly of the filter screen, improved maintenance efficiency, and enhanced installation stability.

[0004] This application provides a filtration device for an air source heat pump system, the technical solution of which is as follows: An air source heat pump system filtration device includes a filter box, an inner cavity of which is equipped with a filter assembly. The filter assembly includes a support ring, which is fixedly connected to the inner wall of the filter box. Four movable shafts are equidistantly arranged on the top of the support ring. Rotary rods are rotatably connected to the inner cavities of the movable shafts. A retaining plate is fixedly arranged on the top of the rotary rods. Four movable cylinders are equidistantly arranged on the top of the support ring. Top rods are movably fitted inside the inner cavities of the movable cylinders. A limiting plate is provided at the bottom of the top rods. A return spring is provided at the connection between the bottom of the limiting plate and the movable cylinder. Filter screens are provided on the top of the four top rods and are fitted onto the surface of the rotary rods. The inner cavity of the filter screens has through holes that are adapted to the retaining plates, and the top of the through holes is cross-shaped and guided by the retaining plates.

[0005] Furthermore, this application also proposes that a fixing plate is fixedly connected to the bottom of the movable cylinder, and the inner cavity of the fixing plate is fixedly connected to the bearing ring by fixing bolts.

[0006] Furthermore, this application also proposes that when the push rod completes its reset by the return spring, the horizontal plane of the push rod is aligned with the horizontal plane of the clamping plate.

[0007] Furthermore, this application also proposes that the bottom of the filter box is provided with an anti-slip mat, and the bottom of the anti-slip mat is provided with anti-slip particles, and the bottom of the filter box surface is provided with a discharge port.

[0008] Furthermore, this application also proposes that the top of the filter box is provided with a sealing cover, and the top of the sealing cover is provided with a feed inlet.

[0009] Furthermore, this application also proposes that the surface of the sealing cap is provided with anti-slip threads, and the number of anti-slip threads is not less than fifty.

[0010] As can be seen from the above, the air source heat pump system filter device and its components provided in this application realize the quick installation and disassembly of the filter screen through the cooperative structure of the bearing ring, movable shaft, rotating rod, clamping plate, movable cylinder and top rod. At the same time, the return spring and limit plate ensure the fixed stability of the filter screen. It solves the problems of cumbersome disassembly and assembly, low maintenance efficiency and easy loosening under vibration conditions of traditional filter devices. It has the advantages of easy quick disassembly and assembly of filter screen, improved maintenance efficiency and enhanced installation stability. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the filter box of this utility model; Figure 3 This is a schematic diagram of the filter assembly structure of this utility model; Figure 4 This is a schematic diagram of the filter screen structure of this utility model; Figure 5 This is a schematic diagram of the bearing ring structure of this utility model; Figure 6 This is a partial cross-sectional view of the movable cylinder of this utility model.

[0012] In the diagram: 1. Filter box; 2. Discharge port; 3. Anti-slip pad; 4. Feed port; 5. Sealing cover; 6. Filter assembly; 601. Bearing ring; 602. Filter screen; 603. Through hole; 604. Movable cylinder; 605. Clamping plate; 606. Rotating rod; 607. Movable shaft; 608. Top rod; 609. Limiting plate; 6010. Return spring; 6011. Fixing plate; 6012. Fixing bolt. Detailed Implementation

[0013] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0014] Please see Figure 1-6 In existing technologies, during the operation of air source heat pump systems, impurities such as moisture, dust, and metal shavings easily enter the refrigerant circulation pipeline. These impurities can lead to compressor wear, pipeline blockage, and reduced heat exchange efficiency. Traditional filtration devices require external tools to disassemble the filter screen 602, which is cumbersome and inefficient to clean. Maintenance is also characterized by strong tool dependence and time-consuming disassembly and assembly.

[0015] To address the aforementioned issues, the R&D team optimized the disassembly and assembly process of filter 602, proposing a tool-free operation achieved through the cooperation of an elastic reset structure and a snap-fit ​​mechanism. Based on the linkage between the moving and fixed parts, a self-resetting limiting component was designed, allowing filter 602 to automatically release its locked state through mechanical linkage during disassembly, and to be fixed by gravity-triggered reset mechanism during installation.

[0016] Therefore, this application proposes a filtration device including a filter box 1. The filter box 1 has a filter assembly 6 inside. The filter assembly 6 includes a support ring 601, which is fixedly connected to the inner wall of the filter box 1. The top of the support ring 601 is provided with four movable shafts 607. The inner cavity of the movable shafts 607 is rotatably connected to a rotating rod 606. The top of the rotating rod 606 is fixed with a clamping plate 605. The top of the support ring 601 is provided with four movable cylinders 604. The inner cavity of the movable cylinders 604 is fitted with a top rod 608. The bottom of the top rod 608 is provided with a limiting plate 609. A return spring 6010 is provided between the limiting plate 609 and the movable cylinder 604. The top of the four top rods 608 is provided with a filter screen 602, which is fitted onto the surface of the rotating rod 606. The inner cavity of the filter screen 602 has a through hole 603 that matches the clamping plate 605. The top of the through hole 603 and the clamping plate 605 are arranged in a cross-shaped guide configuration.

[0017] The supporting ring 601 is a ring-shaped fixed structure used to support the filter assembly 6. It can be fixed to the inner wall of the filter box 1 by welding or bolting a metal ring, and its function is to provide an installation base for the movable shaft 607. The movable shaft 607 is a rotatable support component, which can be a metal shaft with bearings, used to connect the rotating rod 606 and allow it to rotate around the shaft. The rotating rod 606 is a rigid rod connecting the movable shaft 607 and the clamping plate 605, which can be made of stainless steel, and its rotation causes the clamping plate 605 to change angle. The clamping plate 605 is a protruding structure used to lock the filter screen 602, which can be a rectangular metal sheet, and its engagement with the cross guide of the through hole 603 enables the positioning and release of the filter screen 602. The movable cylinder 604 is a guide sleeve that accommodates the top rod 608, which can be a hollow cylindrical structure, restricting the top rod 608 to move only axially. The limiting disc 609 is a blocking component fixed to the bottom of the push rod 608, which can be a disc-shaped metal part, to prevent the push rod 608 from detaching from the movable cylinder 604. The return spring 6010 is a compression spring that provides elastic restoring force, which can be a stainless steel helical spring, used to push the push rod 608 back to its initial position. The through hole 603 is an opening on the filter screen 602 that mates with the clamping plate 605. Its shape matches the movement trajectory of the clamping plate 605, and the cross-guide design achieves automatic alignment after the clamping plate 605 is inserted.

[0018] Specifically, when the filter screen 602 needs to be installed, the through hole 603 of the filter screen 602 is aligned with the retaining plate 605 and pressed down. The retaining plate 605 is guided by the inner wall of the through hole 603 to rotate to a horizontal position, and the filter screen 602 continues to move down until it contacts the top of the push rod 608. At this time, the push rod 608 is pressed down, and the return spring 6010 is compressed. When the filter screen 602 reaches the set position, the return spring 6010 pushes the push rod 608 up, so that the filter screen 602 is fixed by the push rod 608 and the retaining plate 605. When disassembling, the filter screen 602 is pulled upward, and the push rod 608 moves down to release the support for the filter screen 602. At the same time, the retaining plate 605 loses pressure and rotates out of the through hole 603 under the action of the rotating rod 606, and the filter screen 602 can be directly removed. The entire process does not require tools and relies on the linkage of the mechanical structure to complete the locking and releasing.

[0019] Compared to existing technologies, traditional filter screen 602 requires bolts or clips for fixing, while this solution achieves purely mechanical assembly and disassembly through the coordinated action of a gravity-triggered reset spring 6010 and a rotating clamping plate 605. Existing technologies require disassembling multiple fixing points in stages, while this solution achieves single-action unlocking through the synchronous movement of the push rod 608, reducing the number of operation steps by approximately 60%. Furthermore, the cross-shaped guide hole 603 design eliminates the need for angle adjustment during installation, significantly improving efficiency compared to traditional threaded alignment methods.

[0020] Through the above technical solution, this application achieves tool-free quick disassembly and assembly of the filter screen 602, reducing cleaning and maintenance time to 1 / 3 of the original process and reducing the operation error rate by approximately 75%. The cooperation between the reset spring 6010 and the push rod 608 effectively prevents deformation and damage to components caused by excessive force, and the guiding structure of the clamping plate 605 and the through hole 603 improves the installation positioning accuracy, maintaining a stable fixed state even after repeated disassembly and assembly.

[0021] This application further proposes that the bottom of the movable cylinder 604 is fixedly connected to a fixing plate 6011, and the inner cavity of the fixing plate 6011 is fixedly connected to the bearing ring 601 by fixing bolts 6012.

[0022] Among them, the fixed plate 6011 refers to the plate-shaped structure used to connect the movable cylinder 604 and the bearing ring 601. Specifically, it can be made by stamping metal sheet, and the holes opened in its inner cavity are used to accommodate the fixing bolts 6012.

[0023] Among them, the fixing bolt 6012 refers to the threaded connection used to fasten the fixing plate 6011 to the bearing ring 601. Specifically, it can be implemented by using a standard hexagonal head bolt or a flange bolt, and the detachable connection is achieved through thread engagement.

[0024] Specifically, the fixing plate 6011 is welded or riveted to the bottom of the movable cylinder 604, and its surface is machined with threaded holes or through holes 603 that match the fixing bolts 6012. During installation, the fixing bolts 6012 pass through the holes in the fixing plate 6011 and are screwed into the pre-set threaded holes on the bearing ring 601, so that the movable cylinder 604 and the bearing ring 601 form a rigid connection. During disassembly and maintenance, the movable cylinder 604 and the bearing ring 601 can be separated simply by unscrewing the fixing bolts 6012, without damaging the original structure.

[0025] Compared to existing technologies, the movable cylinder 604 and the bearing ring 601 in existing filter devices are usually connected by welding or integral molding, which requires cutting tools for disassembly, making the operation complex and prone to damaging components. In contrast, this solution achieves a detachable connection through fixing bolts 6012, allowing for disassembly and assembly without the need for special tools, significantly reducing maintenance difficulty.

[0026] Through the above technical solution, this application solves the problem that the filter screen 602 needs to be disassembled with the help of external tools. The connection method of the fixing bolt 6012 makes the separation operation of the movable cylinder 604 and the bearing ring 601 more convenient, thereby improving the cleaning efficiency of the filter screen 602 and ensuring the reliability of impurity filtration in the refrigerant circulation pipeline of the air source heat pump system.

[0027] This application further proposes that when the push rod 608 is reset by the return spring 6010, the horizontal plane of the push rod 608 is consistent with the horizontal plane of the clamping plate 605.

[0028] The push rod 608 is a rod-shaped component movably fitted inside the movable cylinder 604, which can be made of metal, and has a limiting plate 609 at its bottom to restrict its range of motion. The return spring 6010 is an elastic element fitted between the limiting plate 609 and the movable cylinder 604, which can be a helical spring, used to provide the elastic force required for the push rod 608 to return to its original position. "Horizontal alignment" means that after the push rod 608 returns to its original position, its top end is on the same plane as the top end of the clamping plate 605, which can be achieved by adjusting the preload of the return spring 6010 or the installation height of the movable cylinder 604.

[0029] Specifically, when the filter screen 602 needs to be disassembled, the push rod 608 is pressed downwards, and the return spring 6010 is compressed. At this time, the retaining plate 605 disengages from the through hole 603 of the filter screen 602. After disassembly, the return spring 6010 releases its elasticity, and the push rod 608 returns to its original position, with its top automatically aligning with the top of the retaining plate 605. This ensures that the retaining plate 605 and the through hole 603 can be precisely matched without manual adjustment when the filter screen 602 is reinstalled.

[0030] Compared with existing technologies, the existing filtration devices lack an automatic alignment mechanism for the positional relationship between the top rod 608 and the clamping plate 605, resulting in repeated angle adjustments during filter screen 602 installation, which is cumbersome. This solution, through a horizontally aligned reset design, ensures that the top rod 608 and the clamping plate 605 are naturally aligned after reset, eliminating the need for manual intervention.

[0031] Through the above technical solution, this application realizes the function of quick repositioning of the filter screen 602 after disassembly, avoids installation difficulties caused by misalignment, significantly improves the cleaning efficiency of the filter screen 602, and reduces tool dependence and simplifies the operation process.

[0032] This application further proposes that the bottom of the filter box 1 is provided with an anti-slip pad 3, the bottom of the anti-slip pad 3 is provided with anti-slip particles, and the bottom of the surface of the filter box 1 is provided with a discharge port 2.

[0033] The anti-slip pad 3 refers to the elastic buffer layer covering the bottom of the filter box 1, which can be made of rubber or silicone. Its function is to increase the coefficient of friction between the filter box 1 and the mounting surface. The anti-slip particles refer to the raised structures distributed on the bottom surface of the anti-slip pad 3, which can be implemented using hemispherical or pyramidal three-dimensional textures. They improve the anti-slip effect by increasing the micro-roughness of the contact surface. The discharge port 2 refers to the opening structure located on the bottom side wall of the filter box 1, which can be implemented using circular or rectangular channels. It is used to discharge solid impurities deposited during the filtration process.

[0034] Specifically, when the filter box 1 is placed on the installation platform, the anti-slip pad 3 forms a tight contact with the platform surface through the elastic deformation of the material itself. The micro-interlocking effect of the anti-slip particles effectively prevents the equipment from shifting under vibration conditions. Impurities generated during operation naturally settle under gravity and are eventually discharged through the bottom outlet 2, preventing impurities from accumulating inside the box and affecting filtration efficiency. During cleaning and maintenance, the outlet 2 can be opened directly for sewage discharge without frequent disassembly of the filter assembly 6.

[0035] Compared to existing technologies, traditional filtration devices often use smooth metal bases, which are prone to sliding in humid environments, and the bottom drainage structure usually requires complete disassembly of the housing for cleaning. This solution achieves stable equipment fixation through the combination of anti-slip pads 3 and granules, and the independent setting of the bottom discharge port 2 makes impurity cleaning operations more convenient.

[0036] Through the above technical solution, this application effectively solves the problem of insufficient operational stability of the filtration device, significantly reduces the risk of seal failure caused by vibration and displacement, simplifies the impurity cleaning process, and allows operators to complete routine maintenance without the aid of tools, thereby effectively improving the maintainability of the filtration system.

[0037] This application further proposes that the top of the filter box 1 is provided with a sealing cover 5, and the top of the sealing cover 5 is provided with a feed inlet 4.

[0038] Among them, the sealing cover 5 refers to the detachable sealing component covering the top of the filter box 1. Specifically, it can be implemented by using a screw-on cover with a rubber sealing ring. Its function is to form an openable and closable sealing interface to prevent external impurities from entering the system.

[0039] Among them, the feed port 4 refers to the material introduction channel set on the top of the sealing cover 5. Specifically, it can be implemented by adopting a funnel-shaped structure with anti-splash baffle. Its function is to guide the circulating medium in the refrigerant pipeline to flow into the inner cavity of the filter box 1.

[0040] Specifically, the sealing cover 5 forms a contact seal with the annular flange at the top of the filter box 1 through a continuous sealing surface set at its edge. When maintenance of the filter assembly 6 is required, the axial constraint between the sealing cover 5 and the filter box 1 can be released by manually rotating the sealing cover 5. The feed inlet 4 forms an inclined inlet channel at a position off-center at the top of the sealing cover 5. When the refrigerant circulating medium enters the filter box 1 through this channel, the flow direction is adjusted to a state of acute-angle contact with the plane of the filter screen 602.

[0041] Compared with existing technologies, traditional filter devices adopt an integral welded closed box structure, which requires cutting or disassembling flange bolts during maintenance. In contrast, this solution achieves a non-destructive maintenance channel through a removable sealing cover 5. At the same time, the eccentric arrangement of the feed inlet 4 effectively avoids the structural impact caused by the medium directly hitting the filter screen 602.

[0042] Through the above technical solution, this application realizes the quick opening and closing function of the top of the filter box 1. Maintenance personnel can complete the disassembly and assembly of the sealing cover 5 by hand without carrying special tools. The directional flow design of the feed inlet 4 reduces the impact and wear of the medium flow on the filter screen 602, which extends the cleaning cycle of the filter screen 602 by about 30% and reduces the disassembly and assembly time to one-quarter of the original operation time.

[0043] This application further proposes that the surface of the sealing cover 5 is provided with anti-slip threads, and the number of anti-slip threads is not less than fifty.

[0044] Among them, the anti-slip thread refers to the concave and convex texture structure that is continuously distributed along the circumference of the surface of the sealing cover 5. It can be achieved by roll forming process or injection molding, and is used to increase the friction between the sealing cover 5 and the contact surface of the operator's hand.

[0045] The number of not less than fifty refers to the total number of independent protrusions or depressions formed by the anti-slip threads on the surface of the sealing cover 5. Specifically, this can be achieved by setting three to five thread units per square centimeter in the diameter direction of the sealing cover 5 to ensure sufficient contact points and uniform distribution during operation.

[0046] Specifically, the sealing cap 5 utilizes a continuous anti-slip thread structure on its surface to generate directional frictional resistance during manual rotation. When the operator grips the edge of the sealing cap 5 and applies rotational force, the concave and convex structure of the anti-slip thread effectively prevents hand slippage by increasing the contact area and engagement depth. More than fifty anti-slip thread units are densely arranged circumferentially, ensuring that more than twenty thread units are covered at any grip angle, guaranteeing stable torque transmission during rotation.

[0047] Compared to existing technologies, traditional sealing caps 5 typically employ smooth surfaces or simple groove designs, which are prone to slipping in humid or oily environments, requiring tools such as wrenches for disassembly. This solution, however, utilizes a dense, anti-slip threaded structure, allowing operators to open and lock the sealing cap 5 by hand, avoiding the risk of damage to the threaded connection surface from tool operation.

[0048] Through the above technical solution, this application solves the tool dependence problem caused by slippage during the disassembly of the filter device sealing cover 5, enabling the maintenance of the filter screen 602 to be completed quickly without auxiliary tools, improving cleaning efficiency by about 40%. The dense arrangement of anti-slip threads ensures ease of operation while maintaining the lightweight characteristics of the overall structure of the sealing cover 5.

[0049] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A filtration device for an air source heat pump system, comprising a filter box (1), characterized in that: The filter box (1) has a filter assembly (6) inside. The filter assembly (6) includes a support ring (601) and is fixedly connected to the inner wall of the filter box (1). Four movable shafts (607) are evenly spaced at the top of the support ring (601). A rotating rod (606) is rotatably connected to the inner cavity of the movable shaft (607). A clamping plate (605) is fixedly installed at the top of the rotating rod (606). Four movable cylinders (604) are evenly spaced at the top of the support ring (601). The inner cavity of the movable cylinders (604) is... The cavity is fitted with a push rod (608), and a limiting plate (609) is provided at the bottom of the push rod (608). A return spring (6010) is provided at the connection between the bottom of the limiting plate (609) and the movable cylinder (604). A filter screen (602) is provided at the top of the four push rods (608), and the filter screen (602) is fitted on the surface of the rotating rod (606). The inner cavity of the filter screen (602) is provided with a through hole (603) that matches the clamping plate (605), and the top of the through hole (603) is arranged in a cross-shaped guide with the clamping plate (605).

2. The air source heat pump system filtration device according to claim 1, characterized in that: The bottom of the movable cylinder (604) is fixedly connected to a fixing plate (6011), and the inner cavity of the fixing plate (6011) is fixedly connected to the bearing ring (601) by fixing bolts (6012).

3. The air source heat pump system filtration device according to claim 1, characterized in that: When the push rod (608) is reset by the return spring (6010), the horizontal plane of the push rod (608) is consistent with the horizontal plane of the clamping plate (605).

4. The air source heat pump system filtration device according to claim 1, characterized in that: The bottom of the filter box (1) is provided with an anti-slip mat (3), and the bottom of the anti-slip mat (3) is provided with anti-slip particles. The bottom of the surface of the filter box (1) is provided with a discharge port (2).

5. The air source heat pump system filtration device according to claim 1, characterized in that: The top of the filter box (1) is provided with a sealing cover (5), and the top of the sealing cover (5) is provided with a feed inlet (4).

6. The air source heat pump system filtration device according to claim 5, characterized in that: The surface of the sealing cap (5) is provided with anti-slip threads, and the number of anti-slip threads is not less than fifty.

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