Roof type air conditioning unit

Abstract

The invention belongs to the technical field of air conditioning units, and relates to a roof type air conditioning unit. The filter unit comprises a unit box body, a filter assembly, a locking mechanism and a driving mechanism. A filtering air channel and a cleaning cavity are formed in the unit box body. The filtering assembly comprises a plurality of filtering plates which are arranged in sequence, and the adjacent filtering plates are connected through elastic pieces. The driving mechanism is used for driving the two filtering assemblies to move between the filtering air channel and the cleaning cavity. The driving device is arranged in the cleaning cavity and is used for driving at least one filter plate of the filter component in the cleaning cavity to move, so that the filter plates are far away from one another, and then the filter plates are released to collide with one another to vibrate under the action of the elastic piece. The multiple filter plates collide with one another under the action of the elastic pieces, equivalently, multiple vibration sources are formed on the filter assembly, the energy blind area of single-point collision is effectively made up, dust cleaning is more uniform and thorough, efficient and automatic cleaning of the filter assembly is achieved, and the manual maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning unit technology, and relates to a rooftop air conditioning unit. Background Technology

[0002] Rooftop air conditioning units, as a common type of air conditioning equipment, are widely used in the grain storage sector. To meet the stringent temperature and humidity requirements for grain storage, grain depots typically employ dedicated air conditioning units to cool and control the humidity of the grain silos, thereby ensuring the quality of the stored grain.

[0003] During the operation of rooftop air conditioning units, the filtration system is a key component that needs to filter the air entering the unit to ensure air quality. However, after long-term use, dust can easily accumulate on the filter plates, causing blockage and affecting the normal ventilation and filtration efficiency of the unit.

[0004] Patent document CN120760231A discloses a combined air conditioning unit. This unit has a filter duct and a semi-cylindrical groove inside its casing. A rotating pipe drives two filter plates to rotate and interchange positions, so that one filter plate works in the filter duct while the other enters the semi-cylindrical groove for cleaning. During cleaning, a cleaning mechanism swings downwards and collides with the filter plate to generate vibration, combined with air blowing through a flat jet tube to remove dust, achieving automatic cleaning. This solution, with its alternating operation of the two filter plates, can complete cleaning without stopping the unit, improving cleaning efficiency to some extent. However, in this solution, the cleaning mechanism swings downwards and collides with one end of the filter plate. Because the vibration energy attenuates as it travels along the filter plate, the vibration amplitude is smaller in areas far from the collision point, making it difficult to completely remove dust and resulting in uneven cleaning.

[0005] To address the above problems, this invention proposes a rooftop air conditioning unit. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a rooftop air conditioning unit.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A rooftop air conditioning unit, comprising:

[0009] The unit housing has a filter duct and a cleaning chamber inside;

[0010] Two filter assemblies are movably disposed within the unit housing. Each filter assembly includes multiple filter plates arranged sequentially, with adjacent filter plates connected by elastic elements.

[0011] A locking mechanism is used to lock the filter assembly located in the filter duct in the filter position and to lock one end of the filter assembly located in the cleaning chamber in the cleaning position.

[0012] A drive mechanism is used to drive the two filter assemblies to move between the filter duct and the cleaning chamber; and to drive at least one filter plate of the filter assembly located in the cleaning chamber to move so that the plurality of filter plates move away from each other, and then release the filter plates so that they collide and vibrate against each other under the action of an elastic member.

[0013] Furthermore, each of the filter components also includes a top plate and a bottom plate, with a plurality of filter plates sequentially connected between the top plate and the bottom plate.

[0014] Furthermore, the drive mechanism includes a sprocket rotatably mounted on the unit housing, a chain meshing with the sprocket, and a plurality of second paddles fixedly mounted on the chain; a first paddle is slidably mounted on the base plate, a first spring is provided between the first paddle and the base plate, and the second paddle is used to push the filter assembly to move through the first paddle, and to compress the first spring to retract the first paddle when passing the first paddle.

[0015] Furthermore, the locking mechanism includes a locking block and a driving component for extending and retracting the locking block. The locking block is slidably disposed inside the unit housing. A second slot is provided on both the top plate and the bottom plate. When the locking block is extended, it is inserted into the second slot to lock the filter assembly.

[0016] Furthermore, the driving component includes an electromagnet and a second spring. The second spring is connected between the card block and the unit housing. The second spring is used to push the card block out to insert into the second card slot. When the electromagnet is energized, it attracts the card block and retracts it, causing it to exit from the second card slot.

[0017] Furthermore, both the bottom of the top plate and the top of the bottom plate are provided with slopes to guide the card block to retract when the filter assembly moves.

[0018] Furthermore, a vacuum cleaner is provided at one end of the cleaning chamber.

[0019] Furthermore, an air inlet chamber is provided at the end of the cleaning chamber away from the vacuum cleaner, and an air distribution plate is provided inside the air inlet chamber.

[0020] Furthermore, a vertical slide rail is fixedly installed inside the unit housing, and both ends of the filter assembly slide in cooperation with the vertical slide rail.

[0021] Furthermore, the elastic element is a tension spring.

[0022] Compared with existing technologies, the present invention has the following advantages: The filter assembly consists of multiple filter plates connected by elastic elements. During cleaning, the drive mechanism stretches the filter assembly to move the filter plates away from each other and then releases them. Under the action of the elastic elements, the filter plates quickly reset and collide with each other, thereby shaking off dust. Each filter plate is relatively short, shortening the vibration energy transmission path and effectively solving the problem of amplitude attenuation at the far end in the vibration of long plates. At the same time, the collision of multiple filter plates under the action of elastic elements is equivalent to forming multiple vibration sources on the filter assembly, effectively compensating for the energy blind zone of single-point collisions, making dust cleaning more uniform and thorough.

[0023] By alternating the lifting and lowering of two sets of filter components, one set filters the air in the filter duct while the other set automatically cleans itself in the cleaning chamber. This achieves non-stop cleaning, ensuring the continuous operation of the air conditioning unit. It eliminates the need for frequent manual disassembly, effectively improving the cleaning efficiency of the filter components and reducing manual maintenance costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the present invention;

[0026] Figure 3 This is a cross-sectional view of the filtering component in this invention;

[0027] Figure 4 This is a cross-sectional view of the top plate and the bottom plate in this invention;

[0028] Figure 5 This is a schematic diagram of the cooperation between the filter component and the vertical slide rail in this invention;

[0029] Figure 6 This is a schematic diagram of the cooperation between the filter component and the chain in this invention;

[0030] Figure 7 This is a schematic diagram of the tension spring in this invention;

[0031] Figure 8 In this invention Figure 7 Enlarged view of part A;

[0032] Figure 9 This is a cross-sectional view of the vertical slide rail in this invention.

[0033] In the diagram: 1. Unit housing; 2. Filter duct; 3. Cleaning chamber; 4. Top plate; 5. Filter plate; 6. Bottom plate; 7. Tension spring; 8. Inclined surface; 9. First slot; 10. First lever; 11. First spring; 12. Vertical slide rail; 13. Protective shell; 14. Shaft; 15. Sprocket; 16. Chain; 17. Second lever; 18. Through hole; 19. Locking block; 20. Second spring; 21. Electromagnet; 22. Vacuum cleaner; 23. Air inlet chamber; 24. Air distribution plate; 25. Second slot. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-9 As shown, the technical solution adopted by the present invention is as follows: A rooftop air conditioning unit includes a unit housing 1, a filter assembly, a locking mechanism, and a drive mechanism. As... Figure 3 As shown, the unit housing 1 has a filter duct 2 and a cleaning chamber 3 inside. In this embodiment, the filter duct 2 is located above the cleaning chamber 3, and the filter duct 2 and the cleaning chamber 3 are separated by a partition. The filter duct 2 is used to connect the outside air with the inside of the unit, serving as the channel for air to enter the unit. The cleaning chamber 3 is used for cleaning the filter components.

[0036] There are two filter components, both of which are movable inside the unit housing 1. The two filter components are alternately located in the filter duct 2 to filter the air entering the filter duct 2.

[0037] Each filter assembly includes a top plate 4, a bottom plate 6, and a plurality of filter plates 5 arranged between the top plate 4 and the bottom plate 6. The plurality of filter plates 5 are sequentially connected between the top plate 4 and the bottom plate 6. In a preferred embodiment, the top plate 4 is connected to adjacent filter plates 5, and adjacent filter plates 5 are connected to each other by elastic elements. Specifically, in this embodiment, the elastic element is a tension spring 7. Figure 7 As shown, the top plate 4 is connected to the topmost filter plate 5 by two tension springs 7, and every two adjacent filter plates 5 are also connected by two tension springs 7. The bottommost filter plate 5 is fixedly connected to the bottom plate 6. Under the action of the tension springs 7, adjacent filter plates 5 are pressed tightly together, and the top plate 4 is pressed tightly together with the corresponding filter plate 5.

[0038] To ensure smooth movement of the filter components, two vertical slide rails 12 are fixedly connected to both sides of the interior of the unit housing 1, such as... Figure 2 , Figure 3 as well as Figure 5 As shown. The two ends of the top plate 4, the two ends of each filter plate 5, and the two ends of the bottom plate 6 are respectively slidably engaged with the vertical slide rails 12 on both sides, so that the entire filter assembly can move up and down along the vertical slide rails 12, while the vertical slide rails 12 also play a role in limiting the horizontal direction of the filter assembly.

[0039] The drive mechanism and locking mechanism are used to enable the two filter components to alternate between the filter duct 2 and the cleaning chamber 3.

[0040] The locking mechanism is used to lock the filter assembly located in the filter duct 2 in the filtering position and to lock one end of the filter assembly located in the cleaning chamber 3 in the cleaning position. The cleaning position means that the top plate 4 of the filter assembly is locked at the through hole 18, so that the filter assembly is suspended in the cleaning chamber 3 for easy subsequent cleaning.

[0041] Specifically, two through holes 18 are formed in the partition between the filter duct 2 and the cleaning chamber 3, through which the filter assembly moves between the filter duct 2 and the cleaning chamber 3. The locking mechanism includes a locking block 19 and a driving component. Sliding grooves are formed on both sides of the inner wall of the through hole 18, and a locking block 19 is slidably disposed in each sliding groove. Second locking grooves 25 are formed on both sides of the top plate 4 and the bottom plate 6.

[0042] When the locking block 19 is in the extended state, it can be inserted into the second locking slot 25, thereby locking the top plate 4 or the bottom plate 6 in the position of the through hole 18. Figure 3 As shown, in the initial state, the filter assembly located in the filter duct 2 has its bottom plate 6 located in the through hole 18 on the left side and locked by the locking block 19. The filter assembly located in the cleaning chamber 3 has its top plate 4 located in the through hole 18 on the right side and locked by the locking block 19. At this time, the bottom plate 6 of the filter assembly in the cleaning chamber 3 is suspended in the cleaning chamber 3.

[0043] The driving component is used to extend or retract the locking block 19. The driving component includes a second spring 20 and an electromagnet 21. The second spring 20 is disposed within the slide groove. One end of the second spring 20 is fixedly connected to the end of the locking block 19, and the other end is fixedly connected to the unit housing 1. The second spring 20 is used to push the locking block 19 outward and insert it into the second locking slot 25. The electromagnet 21 is fixed to the end of the slide groove. When the electromagnet 21 is energized, it attracts the locking block 19, causing the locking block 19 to retract into the slide groove against the elastic force of the second spring 20, and then exit from the second locking slot 25.

[0044] To facilitate the smooth passage of the filter assembly through the locking block 19 during movement, inclined surfaces 8 are provided at the bottom of the top plate 4 and the top of the bottom plate 6. When the inclined surface 8 contacts the locking block 19, it guides the locking block 19 to retract smoothly. When the second locking slot 25 moves to be directly opposite the locking block 19, the locking block 19 automatically pops out under the action of the second spring 20 and locks into the second locking slot 25, thus locking the filter assembly.

[0045] The drive mechanism has a dual function: first, it drives the two filter components to move alternately between the filter duct 2 and the cleaning chamber 3, achieving position interchange; second, it drives at least one filter plate 5 of the filter component located in the cleaning chamber 3 to move, causing multiple filter plates 5 to move away from each other under the action of the tension spring 7, and then releases the filter plates 5, causing them to collide and vibrate against each other under the elastic action of the tension spring 7, thereby shaking off the dust.

[0046] The drive mechanism includes a sprocket 15, a chain 16, and a second lever 17. Protective shells 13 are fixedly connected to the top and bottom of the unit housing 1. A rotating shaft 14 is rotatably connected inside the protective shell 13, and two sprockets 15 are fixedly connected to the rotating shaft 14. The chains 16 are meshed with the outer sides of the upper and lower sprockets 15. Figure 9 As shown, two chains 16 are located inside the vertical slide rails 12 on both sides. A motor is fixedly connected to one of the protective shells 13, and the output shaft of the motor is fixedly connected to the corresponding rotating shaft 14 to provide power for the movement of the chain 16. Multiple second levers 17 are fixedly connected to the chain 16.

[0047] Each filter assembly has a first slot 9 at both ends of its base plate 6. A first lever 10 is slidably connected to each slot 9. A first spring 11 is fixedly connected to one end of each lever 10, and the other end of the spring 11 is fixedly connected to the base plate 6. The first lever 10 extends out of the base plate 6 in its natural state, and retracts into the base plate 6 when subjected to external force, overcoming the elasticity of the spring 11. A second lever 17 contacts the first lever 10, and by pushing the first lever 10, moves the filter assembly along the vertical slide rail 12. When the second lever 17 needs to pass over the first lever 10, it compresses the first spring 11, causing the first lever 10 to retract, thus allowing the second lever 17 to pass smoothly.

[0048] A vacuum cleaner 22 is fixedly connected to one side of the cleaning chamber 3 to suck up the dust that has been shaken off. An air inlet chamber 23 is located on the other side of the cleaning chamber 3, communicating with the outside. A fabric diffuser 24 is fixedly connected inside the air inlet chamber 23. The fabric diffuser 24 has multiple small holes, which can evenly blow the incoming airflow towards the filter assembly inside the cleaning chamber 3, thus providing a backflushing auxiliary cleaning function.

[0049] Working principle: For ease of description, the two filter components are named the first filter component and the second filter component, respectively. Initially, as follows... Figure 3 As shown, the first filter assembly is located inside the filter duct 2, with its top plate 4 abutting against the inner top surface of the filter duct 2. The bottom plate 6 of the first filter assembly is locked by the locking block 19, and the first filter assembly is in the filtering position, filtering the air entering the filter duct 2. The second filter assembly is located inside the cleaning chamber 3, with its top plate 4 locked by the locking block 19 and its bottom plate 6 suspended in the air.

[0050] When the first filter assembly has been used for a period of time and dust accumulates on filter plate 5, the procedure is as follows:

[0051] First, start the vacuum cleaner 22 to draw air in, and at the same time, let the air enter the air inlet chamber 23, and then evenly enter the cleaning chamber 3 through the air distribution plate 24.

[0052] Next, start the motor to make the two chains 16 move counterclockwise, as shown. Figure 3 The direction is shown. At the same time, all electromagnets 21 are energized, causing the electromagnets 21 to retract the locking block 19, thereby releasing the lock on the bottom plate 6 of the first filter assembly and the top plate 4 of the second filter assembly.

[0053] After the base plate 6 of the first filter component is unlocked, the first filter component moves downward along the vertical slide rail 12 under its own gravity.

[0054] After the electromagnet 21 is energized for a preset time, it is turned off, causing the locking block 19 to re-extend under the action of the second spring 20. When the electromagnet 21 is turned off, the bottom plate 6 on the first filter assembly has entered the cleaning chamber 3, while the top plate 4 remains above the corresponding through hole 18.

[0055] As the first filter assembly falls, when its top plate 4 passes the locking block 19 at the corresponding through hole 18, the inclined surface 8 at the bottom of the top plate 4 first contacts the locking block 19, pushing the locking block 19 back. When the second locking slots 25 on both sides of the top plate 4 move to the position of the locking block 19, the locking block 19 pops out and locks into the second locking slots 25, locking the top plate 4 of the first filter assembly at the corresponding through hole 18.

[0056] Simultaneously, after the top plate 4 of the second filter assembly is unlocked, the second lever 17 on the counterclockwise moving chain 16 pushes the first levers 10 at both ends of the bottom plate 6 of the second filter assembly, causing the entire second filter assembly to move upward. When the bottom plate 6 passes the locking block 19 at the corresponding through hole 18, the inclined surface 8 at the top of the bottom plate 6 guides the locking block 19 to retract. When the second locking slots 25 on both sides of the bottom plate 6 move to face the locking block 19, the locking block 19 pops out and engages with the second locking slot 25, locking the bottom plate 6 of the second filter assembly in the corresponding through hole 18. At this time, the top plate 4 on the second filter assembly abuts against the inner top surface of the filter duct 2. Thus, the second filter assembly is lifted into the filter duct 2 and begins to perform the filtration task.

[0057] At this point, the first filter assembly has fully entered the cleaning chamber 3, with its top plate 4 locked at the corresponding through hole 18, and the bottom plate 6 suspended in the air. The chain 16 continues to move counterclockwise, and the second lever 17 on it pushes the first levers 10 at both ends of the bottom plate 6 of the first filter assembly, causing the bottom plate 6 to continue moving downward. Since the top plate 4 is locked and cannot move downward, during the downward movement of the bottom plate 6, the multiple filter plates 5 are gradually stretched apart under the action of the tension spring 7, creating gaps between them. When the bottom plate 6 moves down to contact the bottom surface inside the cleaning chamber 3, it can no longer move downward. At this time, the second lever 17 continues to move, compressing the first spring 11 and causing the first lever 10 to retract, thus passing over the bottom plate 6. After the second lever 17 passes over the first lever 10, the bottom plate 6 is no longer subjected to downward pushing force, and the multiple filter plates 5 quickly retract under the elastic restoring force of the tension spring 7, colliding and vibrating with each other, shaking off the dust adhering to the surface of the filter plates 5. The shaken-off dust is sucked away by the vacuum cleaner 22, while the airflow from the air distribution plate 24 blows back onto the filter plate 5, further enhancing the cleaning effect.

[0058] Since the chain 16 is equipped with multiple second paddles 17, during the counterclockwise movement of the chain 16, each time it passes a second paddle 17, the first filter component will repeat the above-mentioned stretching, releasing, and collision process once, thus achieving multiple vibration cleaning.

[0059] During the counterclockwise movement of the chain 16, when the second paddle 17 passes the first paddle 10 on the second filter assembly, the second filter assembly is difficult to move upward because the bottom plate 6 on the second filter assembly is locked at the corresponding through hole 18. The second paddle 17 pushes the first paddle 10 back into the first slot 9, so that the second paddle 17 can smoothly pass over the bottom plate 6 on the second filter assembly.

[0060] Similarly, when the second filter assembly needs cleaning, the control motor drives the chain 16 to move clockwise, energizing the electromagnet 21 for a preset time. This causes the locking block 19 to disengage from the corresponding second slot 25, releasing the locks on the bottom plate 6 of the second filter assembly and the top plate 4 of the first filter assembly. The second filter assembly then moves downwards into the cleaning chamber 3 under its own gravity. The second lever 17 pushes the first filter assembly into the filter duct 2 via the first lever 10.

[0061] As the chain 16 moves clockwise, the second lever 17 pushes the first lever 10 on the second filter assembly, causing the second filter assembly to stretch. The second lever 17 passes over the first lever 10, and the second filter assembly resets under the action of the tension spring 7, causing the adjacent filter plates 5 to collide and shake off the dust.

[0062] In this way, by reversing the chain 16, the two filter components can be used for alternating filtration and automatic cleaning.

[0063] It should be noted that in this embodiment, multiple independent filter plates 5 are set and connected by tension springs 7. When the filter assembly is stretched, gaps appear between adjacent filter plates 5. When the second lever 17 releases its effect on the filter assembly, the adjacent filter plates 5 collide under the action of the tension springs 7, which helps to clean the entire filter assembly evenly. For a long plate, if a collision vibration is applied at the bottom, the vibration energy will gradually attenuate as it is transmitted upwards, making it difficult to shake off the dust at the top. However, this embodiment uses multiple filter plates 5 that are elastically connected in sequence. Each filter plate 5 is shorter, and the distance from the farthest point to the collision point is greatly shortened, the vibration energy transmission path is shortened, and the problem of amplitude attenuation at the far end is alleviated. At the same time, when multiple filter plates 5 collide with each other under the action of the tension springs 7, it is equivalent to distributing multiple vibration sources on the entire filter assembly, making up for the energy blind spots of single-point collisions, and making the cleaning more uniform and thorough.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rooftop air conditioning unit, characterized in that, include: The unit housing (1) has a filter duct (2) and a cleaning chamber (3) inside. Two filter components are movably disposed within the unit housing (1). Each filter component includes a plurality of filter plates (5) arranged in sequence, and adjacent filter plates (5) are connected by elastic elements. A locking mechanism is used to lock the filter assembly located in the filter duct (2) in the filter position and to lock one end of the filter assembly located in the cleaning chamber (3) in the cleaning position; The driving mechanism is used to drive the two filter assemblies to move between the filter duct (2) and the cleaning chamber (3); and to drive at least one filter plate (5) of the filter assembly located in the cleaning chamber (3) to move so that the plurality of filter plates (5) move away from each other, and then release the filter plates (5) so that they collide and vibrate with each other under the action of the elastic element.

2. The rooftop air conditioning unit according to claim 1, characterized in that: Each of the filter components also includes a top plate (4) and a bottom plate (6), with a plurality of filter plates (5) sequentially connected between the top plate (4) and the bottom plate (6).

3. The rooftop air conditioning unit according to claim 2, characterized in that: The drive mechanism includes a sprocket (15) rotatably mounted on the unit housing (1), a chain (16) meshing with the sprocket (15), and a plurality of second paddles (17) fixedly mounted on the chain (16); a first paddle (10) is slidably mounted on the base plate (6), a first spring (11) is provided between the first paddle (10) and the base plate (6), and the second paddles (17) are used to push the filter assembly to move through the first paddle (10), and compress the first spring (11) to retract the first paddle (10) when passing the first paddle (10).

4. The rooftop air conditioning unit according to claim 2, characterized in that: The locking mechanism includes a locking block (19) and a driving component for extending and retracting the locking block (19). The locking block (19) is slidably disposed inside the unit housing (1). A second slot (25) is provided on both the top plate (4) and the bottom plate (6). When the locking block (19) is extended, it is inserted into the second slot (25) to lock the filter assembly.

5. The rooftop air conditioning unit according to claim 4, characterized in that: The driving component includes an electromagnet (21) and a second spring (20). The second spring (20) is connected between the locking block (19) and the unit housing (1). The second spring (20) is used to push the locking block (19) out to insert into the second slot (25). When the electromagnet (21) is energized, it attracts the locking block (19) and retracts it, causing it to exit from the second slot (25).

6. The rooftop air conditioning unit according to claim 4, characterized in that: The bottom of the top plate (4) and the top of the bottom plate (6) are both provided with inclined surfaces (8) for guiding the card block (19) to retract when the filter assembly moves.

7. The rooftop air conditioning unit according to claim 1, characterized in that: A vacuum cleaner (22) is provided at one end of the cleaning chamber (3).

8. The rooftop air conditioning unit according to claim 7, characterized in that: The cleaning chamber (3) is provided with an air inlet chamber (23) at the end away from the vacuum cleaner (22), and an air distribution plate (24) is provided inside the air inlet chamber (23).

9. The rooftop air conditioning unit according to claim 1, characterized in that: The unit housing (1) is fixedly provided with a vertical slide rail (12), and the two ends of the filter assembly are slidably engaged with the vertical slide rail (12).

10. The rooftop air conditioning unit according to claim 1, characterized in that: The elastic element is a tension spring (7).

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