Intelligent vacuum cleaner with double filtering structure

Abstract

The present invention relates to an intelligent vacuum cleaner with a double-filter structure applied to the technical field related to vacuum cleaners. Through the setting of a single double-sided filter cartridge and the function of a wind pressure sensor, the double-sided filter cartridge can be automatically controlled to rotate according to the dust collection situation, thereby changing its effective filtration area. When vacuuming, the exposed part of the double-sided filter cartridge is used for dust collection, and the blocked part is backblown for cleaning under the action of the wind force of the inhaled air, thereby achieving the effect of simultaneous dust collection and cleaning of the double-sided filter cartridge, realizing self-desorption cyclic double filtration of dust in the air. Compared with the prior art, the filter element can be cleaned without interrupting dust collection without the need for double filter cartridges, effectively ensuring the efficient cleaning of the double-sided filter cartridge, while reducing the volume requirement of the vacuum cleaner and reducing the cost.

Description

Technical Field

[0001] The present invention relates to an intelligent vacuum cleaner, and in particular to an intelligent vacuum cleaner with a double filtering structure applied in the technical field related to vacuum cleaners. Background Art

[0002] The vacuum cleaner is mainly composed of three parts: dust collection, dust collection, and dust filtration. It generally includes a series commutator motor, a centrifugal fan, a dust filter (bag), and dust collection accessories. The power of a general vacuum cleaner is 400-1000W or higher, and the power of a portable vacuum cleaner is generally 250W or less. The vacuum cleaner can remove dust mainly because its "head" is equipped with an electric exhaust fan. There is a wind impeller on the rotating shaft of the exhaust fan. After power is turned on, the exhaust fan will generate a high suction and pressure at a speed of 500 revolutions per second. Under the action of suction and pressure, the air is discharged at a high speed, and the air in the dust collection part at the front end of the fan continuously replenishes the air in the fan, causing an instantaneous vacuum inside the vacuum cleaner, forming a negative pressure difference with the external atmospheric pressure. Under the action of this pressure difference, dust-containing air is inhaled. Dust and other debris enter the dust filter bag through the carpet or floor brush, long pipe, elbow, hose, and hose connector in turn. Dust and other debris are retained in the dust filter bag. After the air is purified by the filter, it is discharged from the tail of the machine body.

[0003] For vacuum cleaners, the biggest problem during use is that the filter element is easy to be blocked after dust adheres to it, so the filter element needs to be frequently cleaned and replaced, affecting the continuous use of the vacuum cleaner. For example, the Chinese patent specification with application number 201710386446.6 discloses a vacuum cleaner; in order to solve the problem of frequent cleaning and replacement of filter elements in the prior art, a self-cleaning structure is added to reduce the frequency of manual cleaning and replacement through self-cleaning. For example, the Chinese patent specification with application number 202020427243.4 discloses a double ash bucket vacuum cleaner with automatic filter cleaning.

[0004] However, in order to cooperate with the automatic dust cleaning structure, the prior art generally has different settings of single filter cartridge and double filter cartridge. If a single filter cartridge is set, the dust collection process needs to be interrupted during dust cleaning, affecting the continuous use of the vacuum cleaner. If a double filter cartridge is set, although the dust cleaning process can be carried out continuously, the size of the vacuum cleaner is invisibly increased, and the double filter cartridge also leads to an increase in the cost of the entire vacuum cleaner. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that in the process of realizing automatic dust cleaning of the vacuum cleaner, both the single filter cartridge and the double filter cartridge have certain defects.

[0006] In order to solve the above problems, the present invention provides an intelligent vacuum cleaner with a double-filtering structure, comprising a vacuum cleaner main body and a dust suction unit installed on the vacuum cleaner main body, the vacuum cleaner main body comprising a shell with a control center, a cover body sealed and clamped on the upper end of the shell, the dust suction unit comprising an exhaust fan installed in the shell, an air suction port fixedly connected to the middle part of the outer end of the shell, a hose threadedly installed on the air suction port, an extended straight pipe fixedly connected to the end of the hose, and a vacuum port fixedly connected to the end of the extended straight pipe, a semi-isolating sleeve is installed inside the shell and the cover body, a double-sided filter cartridge is placed in the semi-isolating sleeve, an exhaust port is fixedly embedded on the upper end of the cover body, the air suction port and the exhaust port are both communicated with the space inside the shell and the cover body, a dust collecting box is inserted at the bottom of the shell, and the dust collecting box is located below the semi-isolating sleeve;

[0007] The semi-isolating sleeve comprises an upper positioning plate fixedly connected to the inner wall of the cover body, a lower isolating plate fixedly connected to the inner wall of the shell, and an air-shielding isolation cover fixedly connected between the upper positioning plate and the lower isolating plate. The upper positioning plate, the lower isolating plate and the air-shielding isolation cover are coaxially arranged. An electric turntable is installed at the upper end of the lower isolating plate. A multi-sided positioning column is fixedly connected to the middle of the upper end of the electric turntable. The lower end of the double-sided filter cartridge is clamped with the multi-sided positioning column. A wind pressure sensor is installed on the inner wall of the air-shielding isolation cover.

[0008] The double-sided filter cartridge includes a lower limit plate clamped with a multilateral positioning column, an upper limit plate that movably passes through the upper positioning plate, and a single-tube circulation filter element clamped between the upper limit plate and the lower limit plate. The single-tube circulation filter element includes a left filter disc, a right filter disc, and two curved hard strips fixedly connected between the opposite ends of the left filter disc and the right filter disc, respectively. An isolation plate is fixedly connected between the two curved hard strips. Wind pressure sensors are also installed on the two end surfaces of the isolation plate facing the left filter disc and the right filter disc. A ventilation groove is drilled at the lower end of the isolation plate. Left and right air outlets are fixedly connected to the upper end of the upper limit plate, and solenoid valves are installed at the outer ends of both. The left air outlet and the right air outlet correspond to the left filter disc and the right filter disc, respectively. The upper end of one side of the lower isolation plate is fixedly connected to the return air hole, and a semi-annular hole is drilled at the upper end of the other side of the lower isolation plate. A one-way valve is installed in the return air hole, and the wind pressure sensor, electric turntable and solenoid valve are all connected to the control center signal.

[0009] In the above-mentioned intelligent vacuum cleaner with a dual filtering structure, a single double-sided filter cartridge can be used to achieve self-desorption circulating dual filtration of dust in the air. Compared with the existing technology, the filter element can be cleaned without interrupting dust collection without the need for double filter cartridges, and dust collection and cleaning are carried out simultaneously, effectively ensuring the efficient cleaning of the double-sided filter cartridge, while reducing the volume requirement of the vacuum cleaner and reducing costs.

[0010] As a further improvement of the present application, the two vertical edges of the air-shielding isolation hood correspond to and contact the two curved hard strips respectively, the air return hole is coaxial with the air-shielding isolation hood, and the air return hole is located between the air-shielding isolation hood and the outer wall of the double-sided filter cartridge.

[0011] An intelligent vacuum cleaner with a dual-filter structure, the use method of which comprises the following steps:

[0012] S1. Hold the end of the extended straight tube, turn on the vacuum cleaner, and aim the suction port at the area to be vacuumed to suck dust;

[0013] S2. Three wind pressure sensors monitor the changes of impurities attached to the double-sided filter cartridge in real time. When the wind pressure sensor in the left filter is lower than the threshold, it means that the left filter exposed outside the air-shielding isolation cover has accumulated too many impurities, resulting in poor permeability. At this time, the control center controls the electric turntable to rotate 180° to swap the positions of the left and right filters, and at the same time controls the solenoid valve on the right air outlet to close and the solenoid valve on the left air outlet to open;

[0014] S3. At this time, the right filter with no impurities or very few impurities is exposed and facing the air intake port, so the dust collection work continues. The air passes through the right filter and enters the inside of the double-sided filter cartridge, and enters the left filter along the ventilation slot. Part of the air is directly discharged along the left air outlet and exhaust port, and part of the air passes through the left filter and enters the air-shielding isolation cover to back-blow the left filter with adhered magazines, so that the impurities adhered to it are desorbed. The desorbed impurities fall along the semi-annular hole to the dust box and are collected. Then the air enters the outer shell along the return air hole, and then passes through the right filter and enters the interior together with the air adsorbed from the outside.

[0015] S4. When the value of the wind pressure sensor in the air-shielding isolation cover is higher than the threshold, it means that most of the impurities on the left filter have been desorbed. At this time, the control center controls the solenoid valve on the right air outlet to open, and the air passing through the right filter and the left filter is discharged from the double-sided filter cartridge along the left and right air outlets simultaneously, and finally discharged from the air intake port;

[0016] S5. As the dust collection continues, when the value of the wind pressure sensor in the right filter drops below the threshold, steps S2-S4 are repeated to achieve self-desorption circulation double filtration of dust in the air by the single-tube filter element.

[0017] As a further improvement of the present application, the left filter disc and the right filter disc are both folded along a semicircular direction, and both are mesh porous structures.

[0018] As a further improvement of the present application, a dynamic shaping rod is provided at the convex turning point of the left filter disc and the right filter disc, and a fixed shaping rod is provided at the concave fold line of the left filter disc and the right filter disc. The upper and lower ends of the dynamic shaping rod are respectively fixedly connected to the upper limit plate and the lower limit plate, and the upper and lower ends of the fixed shaping rod are respectively connected to the upper limit plate and the lower limit plate through electric slide rails.

[0019] As a further improvement of the present application, the left filter disc and the right filter disc are both made of elastic material, and both are in a pleated shape.

[0020] As another improvement of the present application, the sliding track of the dynamic shaping rod is annular, and the annular sliding track is coaxial with the double-sided filter cartridge.

[0021] As another improvement of the present application, the sliding trajectory of the dynamic shaping rod is radially away from the axis of the double-sided filter cartridge. The dynamic shaping rod is made of metal iron material. The outer rings of the upper limit plate and the lower limit plate are fixedly installed with electromagnetic rings, and the electromagnetic rings generate magnetic attraction on the dynamic shaping rod when energized.

[0022] In summary, through the setting of a single double-sided filter cartridge and the function of the wind pressure sensor, the rotation of the double-sided filter cartridge can be automatically controlled according to the dust collection situation, thereby changing its effective filtration area. When dust collection is in progress, the exposed part of the double-sided filter cartridge is used for dust collection, and the blocked part of the double-sided filter cartridge is backblown for cleaning under the action of the wind force of the inhaled air, thereby achieving self-desorption circulating double filtration of dust in the air. Compared with the existing technology, the filter element can be cleaned without interrupting dust collection without the need for double filter cartridges, and dust collection and cleaning are carried out simultaneously, effectively ensuring the efficient cleaning of the double-sided filter cartridge, while reducing the volume requirement of the vacuum cleaner and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0024] Figure 2 A three-dimensional diagram of the back side of the vacuum cleaner body according to the first embodiment of the present application;

[0025] Figure 3 A three-dimensional diagram of the front view of the vacuum cleaner body according to the first embodiment of the present application;

[0026] Figure 4 This is a side perspective view of a double-sided filter cartridge according to the first embodiment of the present application;

[0027] Figure 5 This is a bottom perspective view of a double-sided filter cartridge according to the first embodiment of the present application;

[0028] Figure 6 This is an exploded view of a double-sided filter cartridge according to the first embodiment of the present application;

[0029] Figure 7 A top view of a double-sided filter cartridge according to a first embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of the airflow of a double-sided filter cartridge according to the first embodiment of the present application;

[0031] Fig. 9A schematic diagram of a partial cross section of a double-sided filter cartridge according to a second embodiment of the present application;

[0032] Fig.10 This is a schematic diagram of a partial cross section of a filter disc according to a second embodiment of the present application;

[0033] Fig.11 This is a partial cross-sectional comparison diagram of the folded filter disc when the axial direction changes in the second embodiment of the present application;

[0034] Fig.12 A partial cross-sectional comparison diagram of the radial change of the stacked filter disc according to the third embodiment of the present application;

[0035] Description of the numbers in the figure:

[0036] 11 outer shell, 12 cover body, 2 dust box, 301 dust suction port, 302 extended straight pipe, 303 hose, 304 air intake port, 305 exhaust port, 41 upper positioning plate, 42 lower isolation plate, 43 air-proof isolation cover, 401 semi-annular hole, 402 air return hole, 403 multilateral positioning column, 5 double-sided filter cartridge, 501 left air outlet, 502 right air outlet, 503 ventilation groove, 51 upper limit plate, 52 bilateral filter cartridge, 53 lower limit plate, 54 isolation plate, 521 left filter disc, 522 arc hard strip, 523 right filter disc, 551 dynamic shaping rod, 552 fixed shaping rod. DETAILED DESCRIPTION

[0037] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0038] The first implementation method:

[0039] Figure 1-3The invention shows an intelligent vacuum cleaner with a dual-filter structure, comprising a vacuum cleaner body and a vacuum unit mounted on the vacuum cleaner body, wherein the vacuum cleaner body comprises a housing 11 with a control center, a cover 12 sealed and clamped on the upper end of the housing 11, and the vacuum unit comprises an exhaust fan mounted in the housing 11, an air inlet 304 fixedly connected to the middle of the outer end of the housing 11, a hose 303 threadedly mounted on the air inlet 304, an extended straight pipe 302 fixedly connected to the end of the hose 303, and a vacuum port 301 fixedly connected to the end of the extended straight pipe 302, and a semi-partitioned vacuum cleaner is installed inside the housing 11 and the cover 12. The double-sided filter cartridge 5 is placed in the semi-isolating sleeve, and an exhaust port 305 is fixedly embedded on the upper end of the cover body 12. The air intake port 304 and the exhaust port 305 are both communicated with the space inside the outer shell 11 and the cover body 12. A dust collecting box 2 is inserted at the bottom of the outer shell 11, and the dust collecting box 2 is located below the semi-isolating sleeve. When vacuuming, the air carries the dust into the outer shell 11 along the dust collecting unit, and then enters the double-sided filter cartridge 5 along the exposed bilateral filter cartridge 52 to the inside of the double-sided filter cartridge 5, so as to filter and intercept the dust, and then the clean air is discharged from the double-sided filter cartridge 5, and is discharged to the outside through the exhaust port 305, so as to realize dust collection.

[0040] like Figure 4 The semi-isolating sleeve includes an upper positioning plate 41 fixedly connected to the inner wall of the cover body 12, a lower isolating plate 42 fixedly connected to the inner wall of the shell 11, and an air-shielding isolating cover 43 fixedly connected between the upper positioning plate 41 and the lower isolating plate 42. The upper positioning plate 41, the lower isolating plate 42 and the air-shielding isolating cover 43 are coaxially arranged, and an electric turntable is installed on the upper end of the lower isolating plate 42. A multi-sided positioning column 403 is fixedly connected to the middle part of the upper end of the electric turntable. The lower end of the double-sided filter cartridge 5 is snapped with the multi-sided positioning column 403, so that the double-sided filter cartridge 5 can be disassembled as a whole for easy replacement. A wind pressure sensor is installed on the inner wall of the air-shielding isolating cover 43. Through this wind pressure sensor, the cleaning situation can be effectively monitored during back-blowing cleaning, so as to timely understand the status of the left filter 521 or the right filter 523 being cleaned.

[0041] like Figure 5-6 The double-sided filter cartridge 5 includes a lower limit plate 53 clamped with the polygonal positioning column 403, an upper limit plate 51 movably penetrating the upper positioning plate 41, and a single-tube circulation filter element clamped between the upper limit plate 51 and the lower limit plate 53. The single-tube circulation filter element includes a left filter disc 521, a right filter disc 523, and two arc-surface hard strips 522 respectively fixedly connected between the opposite ends of the left filter disc 521 and the right filter disc 523. Figure 7The left filter disc 521 and the right filter disc 523 are both folded along the semicircular direction, and both are mesh porous structures. The two vertical edges of the air-shielding isolation cover 43 correspond to and contact the two arc-surface hard strips 522 respectively. The return air hole 402 is coaxial with the air-shielding isolation cover 43, and the return air hole 402 is located between the air-shielding isolation cover 43 and the outer wall of the double-sided filter cartridge 5, so that the space enclosed by the air-shielding isolation cover 43 and the double-sided filter cartridge 52 is relatively closed, so that the air carrying dust entering the housing 11 is not easy to enter the air-shielding isolation cover 43, thereby effectively ensuring backwashing. The dust cleaning is carried out stably without affecting the dust cleaning efficiency. An isolation sheet 54 is fixedly connected between the two arc-surface hard strips 522. Wind pressure sensors are also installed on the two end surfaces of the isolation sheet 54 facing the left filter sheet 521 and the right filter sheet 523. In the initial state, the left filter sheet 521 is exposed to the outside and the right filter sheet 523 is located in the air-shielding isolation cover 43. When working, the wind pressure sensor in the left filter sheet 521 is mainly used to monitor the state of the exposed left filter sheet 521 when filtering dust, so as to timely detect the situation where the left filter sheet 521 is blocked by a large amount of dust intercepted, so as to facilitate the control center to control in time The electric turntable is controlled to rotate, so that the left filter 521 and the right filter 523 switch positions, so that the left filter 521 with dust adhesion is in the cleaning position, and the right filter 523 with the filtering capacity restored after cleaning is transferred to the outside to continue dust collection. The lower end of the isolation plate 54 is opened with a ventilation groove 503, and the upper end of the upper limit plate 51 is fixedly connected with a symmetrical left air outlet 501 and a right air outlet 502, and the outer ends of both are installed with electromagnetic valves. The wind pressure sensor, the electric turntable and the electromagnetic valve are all connected to the control center signal. The left air outlet 501 and the right air outlet 502 are connected to the left air outlet 501 and the right air outlet 502. 02 correspond to the left filter 521 and the right filter 523 respectively. The upper end of one side of the lower isolation plate 42 is fixedly connected to the return air hole 402. A semi-annular hole 401 is drilled at the upper end of the other side of the lower isolation plate 42. A one-way valve is installed in the return air hole 402. The gas passing through the double-sided filter cartridge 52 along the cleaning position back-blows the double-sided filter cartridge 52, causing dust and impurities to fall down and be collected in the dust collecting box 2. At the same time, this part of the air continues to move upward along the return air hole 402 and merges with the air that has just entered the outer casing 11, thereby continuing to repeat the above-mentioned dust filtering and cleaning process.

[0042] In the above-mentioned intelligent vacuum cleaner with a dual filtering structure, a single double-sided filter cartridge 5 can be provided to achieve self-desorption circulating dual filtration of dust in the air. Compared with the prior art, the filter element can be cleaned without interrupting dust collection without the need for double filter cartridges, and dust collection and cleaning are performed simultaneously, effectively ensuring efficient cleaning of the double-sided filter cartridge 5, while reducing the volume requirement of the vacuum cleaner and reducing costs.

[0043] An intelligent vacuum cleaner with a dual-filter structure, the use method of which comprises the following steps:

[0044] S1, hold the end of the extended straight tube 302, then turn on the vacuum cleaner, and align the suction port 301 with the area to be vacuumed to perform dust suction processing;

[0045] S2, three wind pressure sensors monitor the changes of impurities attached to the double-sided filter cartridge 5 in real time, such as Figure 7 When the wind pressure sensor in the left filter 521 is lower than the threshold, it means that the left filter 521 exposed outside the air-shielding isolation cover 43 has accumulated too many impurities, resulting in poor permeability. At this time, the control center controls the electric turntable to rotate 180° to swap the positions of the left filter 521 and the right filter 523, and at the same time controls the solenoid valve on the right air outlet 502 to close and the solenoid valve on the left air outlet 501 to open;

[0046] S3, such as Figure 8 At this time, the right filter 523 with no impurities or very few impurities attached is exposed and faces the air intake port 304, so that the dust collection work continues. The air passes through the right filter 523 and enters the inside of the double-sided filter cartridge 52, and enters the left filter 521 along the ventilation groove 503. Part of the air is directly discharged along the left air outlet 501 and the exhaust port 305, and part of the air passes through the left filter 521 and enters the air-shielding isolation cover 43, so as to back-blow the left filter 521 with adhered impurities, so that the impurities adhered to it are desorbed, and the desorbed impurities fall along the semi-annular hole 401 to the dust collecting box 2 and are collected, and then the air enters the housing 11 along the return air hole 402, and then passes through the right filter 523 and enters the interior together with the air adsorbed from the outside.

[0047] S4, when the value of the wind pressure sensor in the air-shielding isolation cover 43 is higher than the threshold value, it means that most of the impurities on the left filter 521 have been desorbed. At this time, the control center controls the solenoid valve on the right air outlet 502 to open, and the air passing through the right filter 523 and the left filter 521 is synchronously discharged from the double-sided filter cartridge 5 along the left air outlet 501 and the right air outlet 502, and finally discharged from the air inlet 304;

[0048] S5. As the dust collection continues, when the value of the wind pressure sensor in the right filter 523 drops below the threshold, steps S2-S4 are repeated to achieve self-desorption cyclic double filtration of dust in the air by the single-tube filter element.

[0049] In summary, through the setting of a single double-sided filter cartridge 5 and the function of the wind pressure sensor, the rotation of the double-sided filter cartridge 5 can be automatically controlled according to the dust collection situation, thereby changing its effective filtration area. During dust collection, the exposed part of the double-sided filter cartridge 5 is used for dust collection, and the blocked part of the double-sided filter cartridge 5 is backblown and cleaned under the action of the wind force of the inhaled air, thereby achieving self-desorption circulating double filtration of dust in the air. Compared with the prior art, the filter element can be cleaned without interrupting dust collection without the need for double filter cartridges, and dust collection and cleaning are carried out simultaneously, effectively ensuring the efficient cleaning of the double-sided filter cartridge 5, while reducing the volume requirement of the vacuum cleaner and reducing costs.

[0050] The second implementation method:

[0051] Based on the first embodiment, this embodiment further improves the double-sided filter cartridge 5, and the rest of the parts are consistent with the first embodiment.

[0052] like Fig. 9 A dynamic shaping rod 551 is provided at the convex turning point of the left filter disc 521 and the right filter disc 523, and a fixed shaping rod 552 is provided at the concave fold line of the left filter disc 521 and the right filter disc 523. The upper and lower ends of the dynamic shaping rod 551 are fixedly connected to the upper limit plate 51 and the lower limit plate 53 respectively, and the upper and lower ends of the fixed shaping rod 552 are connected to the upper limit plate 51 and the lower limit plate 53 respectively through electric slide rails. Fig.10 The left filter disc 521 and the right filter disc 523 are both made of elastic materials, and both are in a pleated shape. The sliding track of the dynamic shaping rod 551 is annular, and the annular sliding track is coaxial with the double-sided filter cartridge 5. Fig.11 During use, when the wind pressure sensor facing the exposed part shows a significant drop in value, the electric slide rail can be used to control multiple dynamic shaping rods 551 to rotate back and forth along the axis of the double-sided filter cartridge 5, thereby making the left filter 521 and the right filter 523 dynamic. On the one hand, the attached impurities can be gradually dropped, thereby prolonging the time of being blocked. On the other hand, a pulling force can be generated on the left filter 521 and the right filter 523, thereby causing them to stretch to a certain extent, thereby effectively expanding the air flow area of ​​the left filter 521 and the right filter 523, thereby improving the air filtering efficiency.

[0053] It is worth noting that the amplitude of each rotation is not greater than the angle between the dynamic shaping rod 551 and the adjacent fixed shaping rod 552, thereby effectively ensuring that the left filter 521 or the right filter 523 is not prone to mutual obstruction.

[0054] The third implementation method:

[0055] This embodiment is based on the first embodiment, and the sliding trajectory of the dynamic shaping rod 551 is changed, and the rest of the parts are consistent with the second embodiment.

[0056] Fig.12 It is shown that the sliding trajectory of the dynamic shaping rod 551 is radially away from the axis of the double-sided filter cartridge 5, and the dynamic shaping rod 551 is made of metal iron material. The outer rings of the upper limit plate 51 and the lower limit plate 53 are fixedly installed with electromagnetic rings, and the electromagnetic rings after power-on generate magnetic attraction on the dynamic shaping rod 551. The electromagnetic rings can generate outward suction on multiple dynamic shaping rods 551 in the radial direction, so that the dynamic shaping rod 551 can pull the left filter 521 or the right filter 523 to expand outward, thereby achieving the effect of increasing the area and increasing the adsorption efficiency.

[0057] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An intelligent vacuum cleaner with a dual-filter structure, characterized in that: It comprises a vacuum cleaner body with a control center and a dust collection unit, wherein a semi-isolating sleeve is installed inside the vacuum cleaner body, and a double-sided filter cartridge (5) is placed inside the semi-isolating sleeve; The semi-isolating sleeve comprises an upper positioning plate (41), a lower isolating plate (42), and an air-proof isolating cover (43) fixedly connected between the upper positioning plate (41) and the lower isolating plate (42), wherein a wind pressure sensor is installed on the inner wall of the air-proof isolating cover (43); The double-sided filter cartridge (5) comprises a lower limit plate (53), an upper limit plate (51), and a single-tube circulation filter element clamped between the upper limit plate (51) and the lower limit plate (53); the single-tube circulation filter element comprises a left filter disc (521), a right filter disc (523), and two curved hard strips (522) respectively fixedly connected between opposite ends of the left filter disc (521) and the right filter disc (523); an isolation disc (54) is fixedly connected between the two curved hard strips (522); wind pressure sensors are also installed on two end surfaces of the isolation disc (54) facing the left filter disc (521) and the right filter disc (523); a ventilation groove (503) is cut at the lower end of the isolation disc (54); a left air outlet (501) and a right air outlet (502) are fixedly connected at the upper end of the upper limit plate (51), and electromagnetic valves are installed at the outer ends of both of them; An electric turntable is installed at the upper end of the lower isolation plate (42), a multi-sided positioning column (403) is fixedly connected to the middle of the upper end of the electric turntable, the lower end of the lower limit plate (53) is clamped with the multi-sided positioning column (403), the upper end of one side of the lower isolation plate (42) is fixedly connected to the return air hole (402), the upper end of the other side of the lower isolation plate (42) is drilled with a semi-annular hole (401), a one-way valve is installed in the return air hole (402), and the wind pressure sensor, the electric turntable and the solenoid valve are all connected to the control center signal; The upper positioning plate (41), the lower isolation plate (42) and the air-shielding isolation cover (43) are coaxially arranged, the two vertical edges of the air-shielding isolation cover (43) correspond to and contact the two curved hard strips (522) respectively, the air return hole (402) is coaxial with the air-shielding isolation cover (43), and the air return hole (402) is located between the air-shielding isolation cover (43) and the outer wall of the double-sided filter cartridge (5).

2. The intelligent vacuum cleaner with a dual-filter structure according to claim 1, characterized in that: The vacuum cleaner body comprises a housing (11), a cover body (12) sealably clamped to the upper end of the housing (11); the dust collection unit comprises an exhaust fan installed in the housing (11), an air intake port (304) fixedly connected to the middle of the outer end of the housing (11), a hose (303) threadedly mounted on the air intake port (304), an extended straight pipe (302) fixedly connected to the end of the hose (303), and a dust collection port (301) fixedly connected to the end of the extended straight pipe (302); an air outlet (305) is fixedly embedded at the upper end of the cover body (12); the air intake port (304) and the air outlet (305) are both in communication with the space inside the housing (11) and the cover body (12); a dust collection box (2) is inserted at the bottom of the housing (11); the dust collection box (2) is located below the semi-isolating sleeve.

3. The intelligent vacuum cleaner with a dual-filter structure according to claim 1, characterized in that: The left filter (521) and the right filter (523) are both folded along a semicircular direction, and both are mesh-like porous structures. The left air outlet (501) and the right air outlet (502) correspond to the left filter (521) and the right filter (523), respectively.

4. The intelligent vacuum cleaner with a dual-filter structure according to claim 3, characterized in that: A dynamic shaping rod (551) is provided at the convex turning point of the left filter disc (521) and the right filter disc (523), and a fixed shaping rod (552) is provided at the concave fold line of the left filter disc (521) and the right filter disc (523). The upper and lower ends of the dynamic shaping rod (551) are respectively fixedly connected to the upper limit plate (51) and the lower limit plate (53), and the upper and lower ends of the fixed shaping rod (552) are respectively connected to the upper limit plate (51) and the lower limit plate (53) via electric slide rails.

5. The intelligent vacuum cleaner with a dual-filter structure according to claim 4, characterized in that: The left filter plate (521) and the right filter plate (523) are both made of elastic material, and both are in a pleated shape.

6. The intelligent vacuum cleaner with a dual-filter structure according to claim 5, characterized in that: The sliding track of the dynamic shaping rod (551) is annular, and the annular sliding track is coaxial with the double-sided filter cartridge (5).

7. The intelligent vacuum cleaner with a dual-filter structure according to claim 5, characterized in that: The sliding track of the dynamic shaping rod (551) is radially away from the axis of the double-sided filter cartridge (5); the dynamic shaping rod (551) is made of a metallic iron material; the outer rings of the upper limit plate (51) and the lower limit plate (53) are fixedly mounted with electromagnetic rings, and the electromagnetic rings generate magnetic attraction on the dynamic shaping rod (551) when energized.

8. A method for using an intelligent vacuum cleaner with a dual-filter structure, characterized in that: The following steps are involved: S1, holding the end of the extended straight tube (302), then turning on the vacuum cleaner, and aligning the suction port (301) with the area to be vacuumed to perform dust suction processing; S2, three wind pressure sensors monitor the changes of impurities attached to the double-sided filter cartridge (5) in real time. When the wind pressure sensor in the left filter (521) is lower than the threshold value, it means that the left filter (521) exposed outside the air-shielding isolation cover (43) has accumulated too many impurities, resulting in poor permeability. At this time, the control center controls the electric turntable to rotate 180 degrees, so that the left filter (521) and the right filter (523) are swapped, and at the same time controls the solenoid valve on the right air outlet (502) to close and the solenoid valve on the left air outlet (501) to open; S3. At this time, the right filter (523) with no impurities or very few impurities attached is exposed and faces the air intake port (304), so that the dust collection work continues. The air passes through the right filter (523) and enters the inside of the double-sided filter cartridge (52), and enters the left filter (521) along the ventilation groove (503). Part of the air is directly discharged along the left air outlet (501) and the exhaust port (305), and part of the air passes through the left filter (521) and enters the air-shielding isolation cover (43), so as to back-blow the left filter (521) with impurities attached thereto, so that the impurities attached thereto are desorbed. The desorbed impurities fall along the semi-circular hole (401) to the dust collecting box (2) and are collected. Then, the air enters the housing (11) along the air return hole (402), and then passes through the right filter (523) and enters the interior together with the air adsorbed from the outside. S4. When the value of the wind pressure sensor in the air-shielding isolation cover (43) is higher than the threshold value, it indicates that most of the impurities on the left filter (521) have been desorbed. At this time, the control center controls the electromagnetic valve on the right air outlet (502) to be opened, and the air passing through the right filter (523) and the left filter (521) is discharged from the double-sided filter cartridge (5) along the left air outlet (501) and the right air outlet (502) simultaneously, and finally discharged from the air intake port (304); S5. As the dust collection operation continues, when the value of the wind pressure sensor in the right filter (523) drops below a threshold, steps S2 to S4 are repeated to achieve self-desorption cyclic double filtration of dust in the air by the single-tube filter element.

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