A self-cleaning filter device for combined air conditioners

Abstract

This invention discloses a self-cleaning filter device for a modular air conditioner, comprising two mounting frames. Each mounting frame has a filter groove, a connecting groove, a return groove, and a flow groove inside. The filter groove and the connecting groove are connected to filter structures. A flow guiding structure connects the two mounting frames, and a cleaning structure is connected inside the return groove. This invention utilizes two sets of modular mounting frames in conjunction with a three-way flow guiding pipe. Initially, one set of channels is blocked with a sealing plate, and airflow only enters a single frame to complete filtration. When cleaning of this filter element is required, there is no need to stop the machine; simply unscrew screw four to change the position of the sealing plate and plug strip, and switch to the other set of frames to continue filtration. Simultaneously, the airflow on the filtration side can drive the cleaning structures on the non-operating side to operate, achieving simultaneous filtration and self-cleaning, completely eliminating the limitation of stopping the machine for cleaning.

Description

Technical Field

[0001] This invention relates to the field of air conditioner filtration devices, specifically a self-cleaning filtration device for modular air conditioners. Background Technology

[0002] Combined air conditioners are the core equipment for air treatment in modern buildings and industrial environments. Their filtration system is a key component in ensuring indoor air quality and protecting the normal operation of the equipment. The filtration system removes particulate matter, microorganisms and pollutants from the air through an interception mechanism, while protecting subsequent core components such as the surface cooler, heater and fan from blockage and wear.

[0003] As the core equipment of ventilation and air conditioning systems, modular air conditioners are widely used in industrial plants, commercial buildings, and HVAC purification projects. The unit is usually divided into multiple functional sections such as air supply section, filtration section, humidification section, fan section, and heat recovery section. Among them, the filtration section plays a core role in purifying airflow, intercepting dust and debris, and protecting downstream unit components. The performance of the filters in the filtration section directly affects the operating resistance, purification effect, energy consumption, and maintenance cost of the air conditioning unit.

[0004] Currently, the commonly used filters in combined air conditioning filter sections on the market are mainly divided into three categories: bag filters, plate self-cleaning filters, and cartridge filters. In long-term engineering applications, these filters have unavoidable technical drawbacks. Bag filters use cloth bag filter media, which, although having a large filtration area and acceptable precision, experience a rapid increase in operating resistance with the amount of accumulated dust, making them prone to clogging. Plate self-cleaning filters have a simple structure, low initial air resistance, and basic self-cleaning function, but their filtration method is limited and their filtration precision is insufficient. Cartridge filters have good filtration uniformity and high filter media strength, but dust adheres firmly to the outer wall, and they lack a dedicated self-cleaning mechanism. Cleaning requires complete disassembly and manual blowing, which is cumbersome and requires system shutdown, affecting the normal operation of the air conditioning system. Therefore, a self-cleaning filter device for combined air conditioners is needed to meet these needs. Summary of the Invention

[0005] The purpose of this invention is to provide a self-cleaning filter device for combined air conditioners to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning filter device for a modular air conditioner, comprising two mounting frames; each of the two mounting frames is provided with a filter groove, a connecting groove, a return groove and a flow groove, the filter groove and the connecting groove are connected with a filter structure, the two mounting frames are connected with a flow guiding structure, the return groove is connected with a first cleaning structure, and the flow groove is connected with a second cleaning structure.

[0007] Preferably, the filtration structure includes a plurality of cylindrical filter elements, which are evenly inserted inside the filtration tank. One end of each cylindrical filter element is located inside the connecting groove and is fitted with an installation ring. A plurality of screws are inserted inside the installation ring and are threaded onto the inner wall of the connecting groove.

[0008] Preferably, a plurality of plate filter elements are inserted inside the communicating groove, and an installation plate is installed on one side of the plate filter element. A screw rod is inserted inside the installation plate, and one end of the screw rod is threaded into the installation frame.

[0009] Preferably, a sealing door is detachably installed on the mounting frame, and a plurality of screws are inserted inside the sealing door, with one end of each screw threaded inside the mounting frame.

[0010] Preferably, the flow guiding structure includes a three-way flow guiding pipe, with both ends of the three-way flow guiding pipe installed between two mounting frames. Both filter tanks are connected to the three-way flow guiding pipe. A sealing plate and a plug are inserted inside the three-way flow guiding pipe. A screw is inserted inside both the sealing plate and the plug. One end of the screw is threaded inside the three-way flow guiding pipe.

[0011] Preferably, the cleaning structure includes an L-shaped return pipe and a Z-shaped return pipe, both of which are mounted on two mounting frames. The two ends of the L-shaped and Z-shaped return pipes are respectively connected to the corresponding connecting groove and return groove. A reducer is installed on the inner wall of the return groove. A linkage blade is installed at the input end of the reducer, and a reciprocating screw is installed at the output end of the reducer. The reciprocating screw is rotatably mounted inside the mounting frame. A threaded slide plate is slidably mounted inside the mounting frame. The threaded slide plate is threaded onto the reciprocating screw. A connecting rod is installed below the threaded slide plate and is slidably mounted in the connecting groove. Several brush rods are installed at one end of the connecting rod, and the brush rods are in contact with the corresponding plate filter element.

[0012] Preferably, the second cleaning structure includes several connecting pipes, which are evenly installed on the inner wall of the flow channel and correspond to the cylindrical filter element. The flow channel is connected to the return channel through the connecting pipes. Several second reducers are installed on the inner wall of the flow channel. The input end of the second reducer is equipped with a linkage fan blade, which is located inside the connecting pipe. The output end of the second reducer is equipped with a rotating rod, and a brush strip is installed on the rotating rod. The brush strip contacts the surface of the cylindrical filter element. A three-way air outlet pipe is installed between the two mounting frames and is connected to the two flow channels.

[0013] Preferably, a fixing frame is installed on the inner wall of the three-way air outlet pipe, and two springs are installed on one side of the fixing frame. One end of each spring is equipped with a one-way blocking plate. The two one-way blocking plates are slidably installed inside the three-way air outlet pipe and block the two air outlet holes of the three-way air outlet pipe.

[0014] Preferably, a guide rod is slidably installed inside the fixing frame, and a spring is slidably sleeved on the guide rod.

[0015] Preferably, a receiving and unloading disc is inserted inside the filter tank, the receiving and unloading disc is located below the cylindrical filter element, and a screw is inserted inside the receiving and unloading disc. One end of the screw is threaded into the inside of the mounting frame, and receiving boxes are installed on both sides of the plate filter element.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention uses two sets of modular mounting frames and a three-way guide pipe to guide the flow. In the initial state, one set of channels is blocked by a sealing plate, and the airflow only enters a single set of frames to complete the filtration. When it is necessary to clean the filter element, there is no need to stop the machine. Just unscrew screw four to change the position of the sealing plate and the plug strip, and you can switch to the other set of frames to continue filtration. At the same time, the airflow on the filtration side can drive the cleaning structure one and cleaning structure two on the non-operation side to run. For example, the airflow drives the linkage blades and linkage fan blades to rotate, which in turn drives the brush rod and brush strip to clean the filter element, so that filtration and self-cleaning can be carried out simultaneously, completely eliminating the limitation of stopping the machine for cleaning.

[0018] 2. This invention adopts a two-stage filtration structure of a cylindrical filter element and a plate filter element. The airflow first passes through the cylindrical filter element with hydrophobic and dust-repellent filter material to intercept coarse impurities such as tobacco shreds and large dust particles. Then, it passes through the plate filter element with high-density pleated filter material to intercept fine dust. The two-stage filtration works together to ensure filtration accuracy and reduce airflow resistance due to the characteristics of the filter material and the structural design.

[0019] 3. The filter element of this invention adopts a screw fixing structure. When replacing, simply unscrew screw three to remove the sealing door, and then unscrew screw one and screw two to pull out the cylindrical filter element or plate filter element. Dust collection is achieved through the receiving disc and receiving box. When cleaning, unscrew screw five to pull out the receiving disc. When disassembling the plate filter element, the receiving box can be taken out at the same time, which is convenient for cleaning or replacement. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a self-cleaning filter device for a combined air conditioner according to the present invention;

[0021] Figure 2 This is a bottom view schematic diagram of a self-cleaning filter device for a combined air conditioner according to the present invention;

[0022] Figure 3 This is a cross-sectional structural schematic diagram of a self-cleaning filter device for a combined air conditioner according to the present invention;

[0023] Figure 4 This is a schematic diagram of the rotating rod structure of a self-cleaning filter device for a combined air conditioner according to the present invention;

[0024] Figure 5 This is a schematic diagram of a cylindrical filter element structure for a self-cleaning filter device used in a combined air conditioner according to the present invention;

[0025] Figure 6 This is a schematic cross-sectional view of a three-way air outlet duct for a self-cleaning filter device in a modular air conditioner according to the present invention.

[0026] Figure 7 This is a schematic diagram of a plate filter element structure for a self-cleaning filter device used in a combined air conditioner according to the present invention.

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the return channel of a self-cleaning filter device for a combined air conditioner according to the present invention.

[0028] Figure 9 This is a schematic cross-sectional view of a three-way guide pipe for a self-cleaning filter device in a modular air conditioner according to the present invention.

[0029] In the diagram: 100, Mounting frame; 200, Filter tank; 201, Connecting channel; 202, Tubular filter element; 203, Mounting ring; 204, Screw 1; 205, Plate filter element; 206, Mounting plate; 207, Screw 2; 208, Sealing door; 209, Screw 3; 300, T-shaped guide pipe; 301, Sealing plate; 302, Plug strip; 303, Screw 4; 400, Return channel; 401, L-shaped return pipe; 402, Z-shaped return pipe; 403. Linkage blades; 404, reciprocating screw; 405, threaded slide plate; 406, connecting rod; 407, brush rod; 408, reducer one; 500, flow channel; 501, connecting pipe; 502, reducer two; 503, linkage fan blades; 504, rotating rod; 505, brush strip; 506, three-way air outlet pipe; 507, fixing frame; 508, spring; 509, one-way blocking plate; 510, guide rod; 600, material receiving tray; 601, material receiving box; 602, screw five. Detailed Implementation

[0030] 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.

[0031] Example 1: Please refer to Figure 1-9The present invention provides a technical solution: a self-cleaning filter device for a modular air conditioner, comprising two mounting frames 100; each of the two mounting frames 100 has a filter groove 200, a connecting groove 201, a return groove 400 and a flow groove 500 inside; the filter groove 200 and the connecting groove 201 are connected to a filter structure inside; a flow guiding structure is connected between the two mounting frames 100; a cleaning structure one is connected inside the return groove 400; and a cleaning structure two is connected inside the flow groove 500.

[0032] First, the two sets of mounting frames 100 can be used alternately for airflow filtration. The overall structure is modular and well-organized, making disassembly and maintenance convenient. It can achieve uninterrupted filtration and self-cleaning simultaneously, and the dust on the filter surface can be cleaned without stopping or disassembling the machine.

[0033] Furthermore, the filtration structure includes several cylindrical filter elements 202, which are evenly inserted inside the filter tank 200. One end of each cylindrical filter element 202 is located inside the connecting groove 201 and is fitted with an installation ring 203. Several screws 204 are inserted inside the installation ring 203 and are threaded onto the inner wall of the connecting groove 201. Several plate filter elements 205 are inserted inside the connecting groove 201. An installation plate 206 is installed on one side of each plate filter element 205. A screw 207 is inserted inside the installation plate 206 and is threaded onto the inside of the installation frame 100. A sealing door 208 is detachably installed on the installation frame 100. Several screws 209 are inserted inside the sealing door 208 and are threaded onto the inside of the installation frame 100.

[0034] It should be noted that the cartridge filter element 202 uses hydrophobic dust-repellent filter material, which makes it difficult for dust to adhere. It can be used to intercept tobacco fragments, large dust particles, and fibrous debris in the airflow. The plate filter element 205 uses high-density pleated filter material, which increases the filtration area in a limited space, ensuring the accuracy of fine dust interception while significantly reducing airflow resistance.

[0035] In the specific implementation process, during installation, the cylindrical filter element 202 is first fixed between the filter tank 200 and the connecting groove 201 by the mounting ring 203 and the screw 1 204. Then, the plate filter element 205 is fixed in the connecting groove 201 by the mounting plate 206 and the screw 2 207. Finally, the mounting frame 100 is sealed with the sealing door 208 and the screw 3 209. When replacing or maintaining it, simply rotate and unscrew the screw 3 209 to remove the sealing door 208, and then unscrew the screw 1 204 and the screw 2 207 respectively to pull out the cylindrical filter element 202 and the plate filter element 205 for replacement.

[0036] During use, the airflow enters the filter tank 200 of one of the mounting frames 100 through the three-way guide pipe 300. Then, the airflow is initially purified by the cylindrical filter element 202 and enters the connecting tank 201. The initially purified airflow passes through several plate filter elements 205 arranged in a row, which further improves the filtration effect.

[0037] Furthermore, the flow guiding structure includes a three-way flow guiding pipe 300, with both ends of the three-way flow guiding pipe 300 installed between two mounting frames 100 respectively. Both filter tanks 200 are connected to the three-way flow guiding pipe 300. A sealing plate 301 and a plug strip 302 are inserted inside the three-way flow guiding pipe 300. A screw 4 303 is inserted inside both the sealing plate 301 and the plug strip 302. One end of the screw 4 303 is threaded inside the three-way flow guiding pipe 300.

[0038] It should be noted that the sealing plate 301 is used to seal one of the outlets of the tee guide pipe 300, so as to enable the individual use of a single set of mounting frames 100. The plug strip 302 is adapted to seal the outlet on the unused side to prevent air leakage.

[0039] In the initial state, the sealing plate 301 is fixed to the screw 303 to block one of the outlets of the three-way guide pipe 300, so that the airflow only enters the filter tank 200 of a set of mounting frames 100. When it is necessary to switch to another set of mounting frames 100, simply rotate and unscrew the screw 303, remove the sealing plate 301 and the plug strip 302 to change their positions, and fix them again with the screw 303 to change the airflow direction of the three-way guide pipe 300.

[0040] Example 2: Figure 1-8 The cleaning structure includes an L-shaped return pipe 401 and a Z-shaped return pipe 402. Both the L-shaped return pipe 401 and the Z-shaped return pipe 402 are mounted on two mounting frames 100. The two ends of the L-shaped return pipe 401 and the Z-shaped return pipe 402 are respectively connected to the corresponding connecting groove 201 and return groove 400. A reducer 408 is installed on the inner wall of the return groove 400. A linkage blade 403 is installed at the input end of the reducer 408, and the output end of the reducer 408... A reciprocating screw 404 is installed inside the mounting frame 100. A threaded slide plate 405 is slidably installed inside the mounting frame 100. The threaded slide plate 405 is threaded onto the reciprocating screw 404. A connecting rod 406 is installed below the threaded slide plate 405. The connecting rod 406 is slidably installed in the connecting groove 201. Several brush rods 407 are installed at one end of the connecting rod 406. The brush rods 407 are in contact with the corresponding plate filter element 205.

[0041] It should be noted that the linkage blade 403 is driven to rotate by the airflow, and after the torque is increased by the reducer 408, it drives the reciprocating screw 404 to rotate, realizing the reciprocating movement of the brush rod 407 for cleaning, without the need for an additional power source.

[0042] In the specific implementation process, when a set of mounting frames 100 is performing filtration, the filtered airflow flows into the return groove 400 of another set of mounting frames 100 through the L-shaped return pipe 401 or the Z-shaped return pipe 402. When the airflow passes through, it can drive the linkage blade 403 to rotate. After the torque is increased by the reducer 408, the reciprocating screw 404 rotates. The threaded slide plate 405 moves vertically back and forth through the threaded engagement with the reciprocating screw 404, and then drives the brush rod 407 to move back and forth through the connecting rod 406 to clean the dust accumulated on the surface of the plate filter element 205.

[0043] Furthermore, the second cleaning structure includes several connecting pipes 501, which are evenly installed on the inner wall of the flow channel 500 and correspond to the cylindrical filter element 202. The flow channel 500 is connected to the return channel 400 through the connecting pipes 501. Several reducers 502 are installed on the inner wall of the flow channel 500. A linkage fan blade 503 is installed at the input end of the reducer 502. The linkage fan blade 503 is located inside the connecting pipe 501. A rotating rod 504 is installed at the output end of the reducer 502. A brush strip 505 is installed on the rotating rod 504. The brush strip 505 is in contact with the surface of the cylindrical filter element 202. A three-way air outlet pipe 506 is installed between the two mounting frames 100. The three-way air outlet pipe 506 is connected to the two flow channels 500.

[0044] It should be noted that the linkage fan blade 503 is located inside the connecting pipe 501 and is driven to rotate by the airflow. After the torque is increased by the reducer 502, it drives the brush strip 505 to rotate and clean.

[0045] In the specific implementation process, after the airflow is filtered by the cylindrical filter element 202, it enters the flow channel 500 through the return channel 400 and then flows through the connecting pipe 501, which drives the linkage fan blade 503 to rotate. Through the reducer 502, the rotating rod 504 is rotated, which drives the brush strip 505 to clean the surface of the cylindrical filter element 202.

[0046] Furthermore, a fixing bracket 507 is installed on the inner wall of the three-way air outlet duct 506. Two springs 508 are installed on one side of the fixing bracket 507. One end of each spring 508 is equipped with a one-way blocking plate 509. The two one-way blocking plates 509 are slidably installed inside the three-way air outlet duct 506 and block the two air outlet holes of the three-way air outlet duct 506. A guide rod 510 is slidably installed inside the fixing bracket 507, and the springs 508 are slidably sleeved on the guide rod 510.

[0047] It should be noted that the guide rod 510 can restrict the horizontal movement of the one-way blocking plate 509 and prevent the spring 508 from bending, thus ensuring the stability of the one-way airflow.

[0048] In the specific implementation process, the final airflow enters the three-way air outlet pipe 506 from the flow channel 500 and pushes open the corresponding one-way blocking plate 509. The one-way blocking plate 509 is forced to drive the guide rod 510 to slide and compress the spring 508, thus completing the airflow output.

[0049] Example 3: As Figure 1-7 The filter tank 200 is equipped with a receiving and unloading disc 600, which is located below the cylindrical filter element 202. The receiving and unloading disc 600 is equipped with a screw 602, one end of which is threaded into the mounting frame 100. The plate filter element 205 is equipped with receiving boxes 601 on both sides.

[0050] In practice, the dust swept off the surface of the plate filter element 205 will fall into the receiving box 601 below, and the impurities swept off the surface of the cylindrical filter element 202 will fall onto the receiving tray 600. When it is necessary to clean the impurities, the receiving tray 600 can be pulled out by rotating and unscrewing screw five 602, and the receiving tray 600 can be pulled out by rotating and unscrewing screw two 207 together with the plate filter element 205 and the receiving box 601 for impurity cleaning or component replacement.

[0051] 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 variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the appended claims and their equivalents. The circuits, electronic components and modules involved in the invention are all prior art and can be fully implemented by those skilled in the art, so there is no need to elaborate. The scope of protection of the invention does not involve improvements to software and methods.

Claims

1. A self-cleaning filter device for a modular air conditioner, comprising two mounting frames (100); characterized in that: Both of the mounting frames (100) have a filter tank (200), a connecting tank (201), a return tank (400), and a flow tank (500) inside. The filter tank (200) and the connecting tank (201) are connected to a filter structure. The two mounting frames (100) are connected to a flow guide structure. The return tank (400) is connected to a cleaning structure one, and the flow tank (500) is connected to a cleaning structure two.

2. The self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: The filter structure includes several cylindrical filter elements (202), which are evenly inserted inside the filter tank (200). One end of each cylindrical filter element (202) is located in the connecting groove (201) and is fitted with an installation ring (203). Several screws (204) are inserted inside the installation ring (203), and the screws (204) are threaded onto the inner wall of the connecting groove (201).

3. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: Several plate filter elements (205) are inserted inside the connecting groove (201). An installation plate (206) is installed on one side of the plate filter element (205). A screw rod (207) is inserted inside the installation plate (206). One end of the screw rod (207) is threaded inside the installation frame (100).

4. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: A sealing door (208) is detachably installed on the mounting frame (100). Several screw rods (209) are inserted inside the sealing door (208), and one end of the screw rods (209) is threaded inside the mounting frame (100).

5. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: The flow guiding structure includes a three-way flow guiding pipe (300), with both ends of the three-way flow guiding pipe (300) installed between two mounting frames (100). Both filter tanks (200) are connected to the three-way flow guiding pipe (300). A sealing plate (301) and a plug strip (302) are inserted inside the three-way flow guiding pipe (300). A screw four (303) is inserted inside both the sealing plate (301) and the plug strip (302). One end of the screw four (303) is threaded inside the three-way flow guiding pipe (300).

6. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: The cleaning structure includes an L-shaped return pipe (401) and a Z-shaped return pipe (402). Both the L-shaped return pipe (401) and the Z-shaped return pipe (402) are mounted on two mounting frames (100). The two ends of the L-shaped return pipe (401) and the Z-shaped return pipe (402) are respectively connected to the corresponding connecting groove (201) and return groove (400). A reducer (408) is installed on the inner wall of the return groove (400). A linkage blade (403) is installed at the input end of the reducer (408), and a linkage blade (403) is installed at the output end of the reducer (408). A reciprocating screw (404) is installed inside the mounting frame (100). A threaded slide plate (405) is slidably installed inside the mounting frame (100). The threaded slide plate (405) is threaded onto the reciprocating screw (404). A connecting rod (406) is installed below the threaded slide plate (405). The connecting rod (406) is slidably installed in the connecting groove (201). Several brush rods (407) are installed at one end of the connecting rod (406). The brush rods (407) are in contact with the corresponding plate filter element (205).

7. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: The second cleaning structure includes several connecting pipes (501), which are evenly installed on the inner wall of the flow channel (500) and correspond to the cylindrical filter element (202). The flow channel (500) is connected to the return channel (400) through the connecting pipes (501). Several speed reducers (502) are installed on the inner wall of the flow channel (500). A linkage fan blade (503) is installed at the input end of the speed reducer (502). The linkage fan blade (503) is located inside the connecting pipe (501). A rotating rod (504) is installed at the output end of the speed reducer (502). A brush strip (505) is installed on the rotating rod (504). The brush strip (505) is in contact with the surface of the cylindrical filter element (202). A three-way air outlet pipe (506) is installed between the two mounting frames (100). The three-way air outlet pipe (506) is connected to the two flow channels (500).

8. A self-cleaning filter device for a modular air conditioner according to claim 7, characterized in that: The inner wall of the three-way air outlet pipe (506) is equipped with a fixing bracket (507). Two springs (508) are installed on one side of the fixing bracket (507). One end of each spring (508) is equipped with a one-way blocking plate (509). The two one-way blocking plates (509) are slidably installed inside the three-way air outlet pipe (506) and block the two air outlet holes of the three-way air outlet pipe (506).

9. A self-cleaning filter device for a modular air conditioner according to claim 8, characterized in that: The guide rod (510) is slidably installed inside the fixing frame (507), and the spring (508) is slidably sleeved on the guide rod (510).

10. A self-cleaning filter device for a modular air conditioner according to claim 1, characterized in that: The filter tank (200) is equipped with a receiving and unloading disc (600), which is located below the cylindrical filter element (202). The receiving and unloading disc (600) is equipped with a screw five (602), one end of which is threaded into the mounting frame (100). The plate filter element (205) is equipped with receiving boxes (601) on both sides.

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