Dust collector for purifying air

Abstract

The dust collector comprises a shell, an air inlet and an air outlet are formed in the bottom and the top of the shell respectively, and the air inlet and the air outlet are communicated through an air channel; the negative pressure fan is fixedly connected to the side, close to the exhaust port, in the air channel; and the filtering assembly comprises a filter element piece, a lantern ring and a vibration unit, and the filter element piece is arranged at the position, located in the air channel, in the air inlet. The invention relates to the technical field of dust collectors. According to the dust collector capable of purifying the air, dust blocked on the surface of the filter element part can be vibrated off when the filter element part is blocked through the arranged filter assembly, so that the effect of removing blockage of the filter element part is achieved, the efficient air filtering performance of the filter element part is recovered, the service life of the filter element part is effectively prolonged, and the use cost of the dust collector is reduced; practicality of the dust collector is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a vacuum cleaner for purifying air. Background Art

[0002] A vacuum cleaner is a cleaning tool used to clean surfaces such as floors, furniture, and cars. It sucks in dust, dirt, and other particulate matter by generating negative pressure. A vacuum cleaner mainly consists 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. An air purifying vacuum cleaner combines the functions of dust collection and air purification, and can effectively remove dust, allergens, and odors from the air while cleaning the floor. Its design usually includes a multi-stage filtration system that not only sucks away dirt on the floor, but also purifies the air.

[0003] In the prior art, since the air purifier uses a multi-stage filtration system to filter dust and odor in the air, the air passing efficiency of the filtration system is one of the important factors affecting its filtration performance. As the air purifier works for a longer time, the filter screen at the outermost layer of the filtration system will be clogged with dust, resulting in a reduction in the cross-section of the outermost filter screen that can pass air, thereby reducing the air flow rate and seriously affecting the efficiency of air purification.

[0004] Therefore, those skilled in the art provide a vacuum cleaner for purifying air to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a vacuum cleaner for purifying air to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: The above technical objectives of the present invention are achieved through the following technical solutions: A vacuum cleaner for purifying air comprises a shell, the bottom and top of which are respectively provided with an air inlet and an air outlet, the air inlet and the air outlet being connected through an air passage; A negative pressure fan is fixedly connected to one side of the air duct close to the exhaust port; The filter assembly comprises a filter element, a collar and a vibration unit. The filter element is arranged at a place in the airway in the air inlet, the collar is clamped on the top of the filter element, the inner wall of the air inlet is arranged at the outer side of the airway and is provided with a circular groove for the collar to slide, and the vibration unit is arranged between the outer wall of the collar and the circular groove; A pressure relief piston, a pressure relief hole is provided on the inner wall of the air inlet, an end of the pressure relief hole away from the air inlet is connected to the airway, and a pressure relief piston is slidably connected in the pressure relief hole; A circulation chamber is provided in the shell at the side of the pressure relief hole away from the air inlet. The circulation chamber is mainly composed of two vertical sections and two rotary sections. The two vertical sections are arranged at intervals in the horizontal direction. The upper and lower ends of the two vertical sections are connected through two rotary sections respectively. A one-way valve is fixedly connected in one of the vertical sections close to the air inlet. A water retaining plate is fixedly connected below the one-way valve. The surface of the water retaining plate is evenly distributed with water leakage holes for forming a water curtain. An input port and an output port are respectively provided below the water retaining plate and above the one-way valve in the vertical section, and a pressure relief hole is disconnected on one side close to the circulation cavity, and the two disconnections are respectively connected to the input port and the output port.

[0007] Furthermore, a pressure chamber is opened in the pressure relief hole at the bottom of the outer peripheral side of the pressure relief piston, a flow channel connected to the annular groove is opened at the top of the pressure chamber, and a pressure plate for squeezing air is slidably connected to the bottom of the pressure chamber, and the pressure plate is fixedly connected to the bottom of the pressure relief piston.

[0008] Furthermore, a circular hole is provided at the bottom of the pressure relief piston, and an exhaust groove connected to the circular hole is provided at the top of the outer peripheral wall of the pressure relief piston; The length of the pressure relief piston is greater than the length of the pressure chamber, so that when the pressure plate is located at the bottom of the pressure chamber, the exhaust groove is blocked by the inner wall of the pressure relief hole.

[0009] Furthermore, the vibration unit includes a vibration ring, a pressure spring and a pressure buckle, the outer wall of the sleeve ring is concave to form a vibration groove, the vibration ring is slidably arranged in the vibration groove, and pressure springs are fixedly connected between the two sides of the vibration ring and the vibration groove; A sliding groove is provided on the inner wall of the annular groove at one side of the vibration ring close to the filter element, and a pressure buckle for clamping the vibration ring is slidably connected in the sliding groove.

[0010] Furthermore, a diversion hole is provided in the middle of the flow channel, and one end of the diversion hole away from the flow channel is connected to the chute.

[0011] Furthermore, an observation window is provided on a side of the outer wall of the shell close to the circulation chamber, and a water changing interface for changing water is installed below the observation window.

[0012] Furthermore, a baffle is hinged above the opening of the input port, and the width of the baffle is greater than the width of the input port; A guide plate is fixedly connected above the opening of the output port, and an inclination angle is arranged between the guide plate and the inner wall of the vertical section.

[0013] Furthermore, the filter element is composed of a pre-filtration layer, a HEPA filter layer, an activated carbon layer and an electrostatic adsorption layer.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The vacuum cleaner for purifying air can, through the filter assembly, shake off the dust blocked on the surface of the filter element when the filter element is blocked, thereby achieving the effect of clearing the blockage of the filter element and restoring the performance of the filter element to filter air efficiently, thereby effectively extending the service life of the filter element, reducing the use cost of the vacuum cleaner, and improving the practicality of the vacuum cleaner; 2. The vacuum cleaner for purifying air can release pressure when the filter element is clogged by means of a pressure relief piston, thereby preventing the negative pressure fan from being damaged due to excessive negative pressure in the airway, and protecting the negative pressure fan, thereby ensuring the operating stability of the vacuum cleaner, effectively extending the service life of the vacuum cleaner, reducing the maintenance frequency of the vacuum cleaner, and further reducing the use cost of the vacuum cleaner; 3. This kind of vacuum cleaner for purifying air can filter the dust sucked in during pressure relief in the circulation chamber through the circulation chamber, thereby ensuring the air purification effect of the vacuum cleaner. At the same time, it can also clean the dust in the air inlet to prevent the dust shaken off in the air inlet from being re-blocked in the filter element, which can effectively extend the clogging period of the filter element, thereby improving the air purification efficiency of the vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a vacuum cleaner for purifying air of the present invention; Figure 2 It is a structural schematic diagram of a filter assembly in a vacuum cleaner for purifying air according to the present invention; Figure 3 It is a schematic diagram of the internal structure of a vacuum cleaner for purifying air according to the present invention; Figure 4 It is a structural schematic diagram of a pressure relief piston in a vacuum cleaner for purifying air according to the present invention; Figure 5 yes Figure 3 The enlarged view of point A in the middle; Figure 6 yes Figure 4 Enlarged view of point B in the middle.

[0017] In the figure, 1, housing; 2, negative pressure fan; 3, filter assembly; 31, filter element; 311, pre-filter layer; 312, HEPA filter element layer; 313, activated carbon layer; 314, electrostatic adsorption layer; 32, collar; 33, vibration unit; 331, vibration ring; 332, pressure spring; 333, pressure buckle; 4, pressure relief piston; 5, air inlet; 6, exhaust port; 7, airway; 8, annular groove; 9, discharge Pressure hole; 10, circulation chamber; 101, vertical section; 102, rotary section; 103, one-way valve; 104, water baffle; 11, input port; 12, output port; 13, pressure chamber; 14, flow channel; 15, pressure plate; 16, round hole; 17, exhaust groove; 18, vibration groove; 19, slide; 20, diversion hole; 21, observation window; 22, water exchange interface; 23, baffle; 24, guide plate; 25, limit block. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and specific embodiments: Example: Reference Figure 1 - Figure 6 The present invention discloses a vacuum cleaner for purifying air, comprising a housing 1, the bottom and top of which are respectively provided with an air inlet 5 and an air outlet 6, the air inlet 5 and the air outlet 6 being connected through an air duct 7; A negative pressure fan 2, which is fixedly connected to one side of the air duct 7 close to the exhaust port 6; The filter assembly 3 comprises a filter element 31, a collar 32 and a vibration unit 33. The filter element 31 is arranged at a place in the air inlet 5 at the air passage 7. The collar 32 is clamped on the top of the filter element 31. The inner wall of the air inlet 5 is arranged at the outer side of the air passage 7 and is provided with a circular groove 8 for the collar 32 to slide. The vibration unit 33 is arranged between the outer wall of the collar 32 and the circular groove 8. The pressure relief piston 4 has a pressure relief hole 9 formed on the inner wall of the air inlet 5. The end of the pressure relief hole 9 away from the air inlet 5 is connected to the air passage 7. The pressure relief piston 4 is slidably connected in the pressure relief hole 9. A circulation chamber 10 is provided in the housing 1 on the side of the pressure relief hole 9 away from the air inlet 5. The circulation chamber 10 is mainly composed of two vertical sections 101 and two rotary sections 102. The two vertical sections 101 are arranged at intervals in the horizontal direction. The upper and lower ends of the two vertical sections 101 are respectively connected through the two rotary sections 102. A one-way valve 103 is fixedly connected in one of the vertical sections 101 close to the air inlet 5. A water retaining plate 104 is fixedly connected below the one-way valve 103. The surface of the water retaining plate 104 is evenly distributed with water leakage holes for forming a water curtain. An input port 11 and an output port 12 are respectively provided in the vertical section 101 below the water retaining plate 104 and above the one-way valve 103. The pressure relief hole 9 is disconnected on one side close to the circulation chamber 10, and the two disconnections are connected to the input port 11 and the output port 12 respectively.

[0019] In this embodiment, observe Figure 1 and Figure 3 It can be found that by opening an air inlet 5 and an exhaust port 6 at the bottom and the top of the shell 1 respectively, and connecting the air inlet 5 and the exhaust port 6 through the air duct 7, and fixing a negative pressure fan 2 on one side of the air duct 7 close to the exhaust port 6, negative pressure can be generated when the negative pressure fan 2 is running, so that air is sucked in through the air inlet 5 and then discharged through the exhaust port 6, thereby achieving the effect of allowing air to flow in one direction.

[0020] Later in Figure 3 It can also be found that a filter assembly 3 is provided in the air inlet 5 at a location in the air duct 7. When air is sucked in through the air inlet 5 and enters the air duct 7, it will pass through the filter element 31 of the filter assembly 3, so that dust and odor in the air are filtered out, achieving dust removal, air purification, etc. However, when the filter element 31 filters the air, the filter layer on its surface for intercepting large particles of impurities such as dust will be blocked, so that the cross-section of the surface of the filter element 31 that can pass air is reduced, thereby reducing the air filtering and purification performance, requiring the vacuum cleaner to replace the filter element regularly, and increasing the use cost of the vacuum cleaner.

[0021] So observe Figure 3 It can be found that a ring 32 is connected to the top of the filter element 31, and an annular groove 8 is opened on the inner wall of the air inlet 5 located on the outside of the air duct 7, so that the filter element 31 can slide up and down along the axis of the annular groove 8, and a vibration unit 33 is also arranged between the annular groove 8 and the ring 32, so that the filter element 31 can vibrate synchronously when sliding along the annular groove 8, and the dust can be shaken off by the vibration, which has the effect of cleaning, so that the filter element 31 can be used for a long time, and the service life of the filter element can be effectively extended.

[0022] When the filter element 31 is blocked, the air flow rate decreases, but the negative pressure fan 2 is still in normal operation, so the negative pressure in the airway 7 increases. Therefore, in order to avoid overload damage to the negative pressure fan 2, the observation Figure 3 It can be found that a pressure relief hole 9 is opened on one side of the air inlet 5, and a pressure relief piston 4 is slidably connected in the pressure relief hole 9. When the negative pressure in the airway 7 increases, the pressure can be relieved by sliding the pressure relief piston 4, which can effectively reduce the overload and burning of the negative pressure fan 2 during operation and provide a protective effect for the negative pressure fan 2.

[0023] When the pressure relief hole 9 is sucking in air and releasing pressure, the vibration unit 33 will synchronously vibrate the filter element 31, causing the dust attached to the surface of the filter element 31 to fall off, so that the shaken dust is sucked into the pressure relief hole 9 and then discharged through the exhaust port 6, affecting the air purification effect. Figure 3 It can also be found that a circulation chamber 10 is provided at the bottom of the pressure relief hole 9 near the air inlet 5, and the circulation chamber 10 is composed of two vertical sections 101 and two rotary sections 102, and the two vertical sections 101 are arranged at intervals in the horizontal direction, and the tops and bottoms of the two vertical sections 101 are connected through the two rotary sections 102 respectively, so that the circulation chamber 10 forms an annular cavity, and then a one-way valve 103 is fixedly connected in one of the vertical sections 101 near the air inlet 5, and the one-way valve 103 is located at the A water baffle 104 is fixedly connected to the bottom, and water leakage holes for forming a water curtain are evenly distributed on the surface of the water baffle 104. Finally, an output port 12 and an input port 11 are respectively opened above the one-way valve 103 and below the water baffle 104. At the same time, the pressure relief hole 9 is disconnected on the side close to the circulation chamber 10, and the two breaks are connected to the output port 12 and the input port 11 respectively. At this time, when the pressure relief hole 9 inhales and releases pressure, dust will be sucked into the circulation chamber 10, and then look at Figure 5 It can be found that when dust enters the circulation chamber 10 through the input port 11, the air carrying the dust will be blocked by the one-way valve 103 in the vertical section 101 and cannot move upward. Therefore, the air carrying the dust will flow downward, and after passing through the lower rotating section 102, the vertical section 101 on the other side and the upper rotating section 102 in turn, it will be discharged through the output port 12. When the air passes through the lower rotating section 102, by injecting liquid for filtering dust into the rotating section 102, the dust in the air can be filtered out, which has the effect of filtering dust, and can effectively prevent the dust from being discharged through the exhaust port 6, so as to ensure the air purification effect of the vacuum cleaner.

[0024] When the air is filtered in the rotating section 102, a small amount of liquid will be pushed by the air to flow, so that a small amount of liquid will flow to the top of the one-way valve 103. Therefore, the output port 12 is opened above the one-way valve 103. When the air and liquid move to the output port 12, the liquid with a larger specific gravity cannot enter the output port 12 and flows downward, thereby accumulating on the one-way valve 103. As the liquid accumulation on the one-way valve 103 increases, the force on the one-way valve 103 increases, so that the weight of the liquid squeezes the one-way valve 103 to flow downward, thereby causing the liquid to reflux.

[0025] During the liquid reflux process, the liquid will drip onto the water baffle 104, and will be blocked by the water baffle 104 and flow out along the leakage holes evenly distributed on the surface of the water baffle 104 to form a water curtain, so that the dirty air that subsequently enters the circulation chamber 10 will contact with the water curtain, thereby increasing the contact area between air and water, thereby improving the cleaning efficiency, thereby ensuring that dust cannot leak, and effectively ensuring the practicality of the vacuum cleaner.

[0026] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, a pressure chamber 13 is provided at the bottom of the outer peripheral side of the pressure relief piston 4 in the pressure relief hole 9, a flow channel 14 communicating with the annular groove 8 is provided at the top of the pressure chamber 13, a pressure plate 15 for squeezing air is slidably connected to the bottom of the pressure chamber 13, and the pressure plate 15 is fixedly connected to the bottom of the pressure relief piston 4; A circular hole 16 is formed at the bottom of the pressure relief piston 4, and an exhaust groove 17 connected to the circular hole 16 is formed at the top of the outer peripheral wall of the pressure relief piston 4; The length of the pressure relief piston 4 is greater than the length of the pressure chamber 13 , so that when the pressure plate 15 is located at the bottom of the pressure chamber 13 , the exhaust groove 17 is blocked by the inner wall of the pressure relief hole 9 .

[0027] In this embodiment, observe Figure 4 It can be found that a circular hole 16 is opened at the bottom of the pressure relief piston 4, and then an exhaust groove 17 connected to the circular hole 16 is opened on the top of the outer peripheral wall of the pressure relief piston 4, so that when the negative pressure in the airway 7 increases, the pressure relief piston 4 is sucked upward by the negative pressure, so that the exhaust groove 17 is exposed, so that air can flow through the circular hole 16 and the exhaust groove 17 of the pressure relief piston 4 to achieve the effect of pressure relief.

[0028] A pressure chamber 13 is provided at the bottom of the pressure relief hole 9 on the outer peripheral side of the pressure relief piston 4, and a pressure plate 15 is slidably connected in the pressure chamber 13. At the same time, the pressure plate 15 is fixedly connected to the bottom of the pressure relief piston 4, so that the pressure relief piston 4 can be sucked upward by the negative pressure in the airway 7 and the pressure plate 15 can squeeze the air in the pressure chamber 13. Figure 3 It can be found that a flow channel 14 connected to the annular groove 8 is opened at the top of the pressure chamber 13, so that when the air in the pressure chamber 13 is pressurized, the air will enter the annular groove 8 through the flow channel 14, so that the air pushes the ring 32 to move downward in the annular groove 8, thereby operating the vibration unit 33 between the annular groove 8 and the ring 32, so that the dust attached to the surface of the filter element 31 is shaken off, thereby achieving the effect of clearing the blockage.

[0029] Since the exhaust groove 17 is opened at the top of the outer peripheral side of the pressure relief piston 4, and the pressure chamber 13 is opened at the bottom of the outer peripheral side of the pressure relief piston 4, in order to prevent air from entering the pressure chamber 13 through the exhaust groove 17, the length of the pressure relief piston 4 is made greater than the length of the pressure chamber 13. When the pressure plate 15 slides to the bottom of the pressure chamber 13, the exhaust groove 17 is located above the pressure chamber 13, which can effectively prevent the compressed gas in the pressure chamber 13 from leaking.

[0030] At the same time, the pressure plate 15 and the pressure chamber 13 can also provide a limiting effect for the pressure relief piston 4 to prevent the pressure relief piston 4 from slipping out of the pressure relief when relieving pressure. When the pressure plate 15 slides to the bottom of the pressure chamber 13, the exhaust groove 17 is blocked by the inner wall of the pressure relief hole 9, which is used to prevent air from leaking through the pressure relief hole 9 and affecting the effect of the vacuum cleaner in purifying the air.

[0031] In a further preferred embodiment of the present invention, Figure 3 and Figure 6 As shown, the vibration unit 33 includes a vibration ring 331, a pressure spring 332 and a pressure buckle 333. The outer wall of the ring 32 is concave to form a vibration groove 18, and the vibration ring 331 is slidably arranged in the vibration groove 18. Pressure springs 332 are fixedly connected between the two sides of the vibration ring 331 and the vibration groove 18. The inner wall of the annular groove 8 is provided with a slide groove 19 on one side of the vibration ring 331 close to the filter element 31, and a pressure buckle 333 for clamping the vibration ring 331 is slidably connected in the slide groove 19; A diversion hole 20 is formed in the middle of the flow channel 14 , and one end of the diversion hole 20 away from the flow channel 14 is connected to the chute 19 .

[0032] In this embodiment, since the ring 32 needs to generate vibration during the downward movement, the dust attached to the surface of the filter element 31 is shaken off to achieve the effect of clearing the blockage. Figure 6 It can be found that a vibration groove 18 is formed on the outer wall of the sleeve ring 32, and a vibration ring 331 is slidably connected in the vibration groove 18, so that pressure springs 332 are fixedly connected between the two sides of the vibration ring 331 and the vibration groove 18. At this time, the vibration ring 331 will be pushed to the center of the vibration groove 18 by the two pressure springs 332. Figure 6It can also be found that a slide groove 19 is provided on the inner wall of the annular groove 8 on one side of the vibration ring 331 close to the filter element 31, and a pressure buckle 333 is slidably provided in the slide groove 19, and at the same time a diverter hole 20 is drawn out in the middle of the flow channel 14 to connect the diverter hole 20 with the slide groove 19. At this time, the air pressure in the flow channel 14 increases, and the air pressure in the diverter hole 20 also increases synchronously, so that the pressure buckle 333 is pushed out to clamp the vibration ring 331 in the ring 32. At this time, when the air pressure pushes the ring 32 downward, the vibration ring 331 located in the middle of the vibration groove 18 cannot move downward due to the obstruction of the pressure buckle 333, so that the pressure spring 332 above the vibration ring 331 is compressed and deformed, and when the pressure spring 332 is compressed and deformed, the pressure applied by the vibration ring 331 to the pressure buckle 333 will also increase accordingly, and Figure 6 It can be found that the pressure buckle 333 is provided with an inclined surface on one side close to the vibration ring 331, so that when the inclined surface is under pressure, the pressure will be converted into a lateral force that presses the pressure buckle 333 into the slide groove 19, so that when the sleeve ring 32 gradually moves downward, the pressure buckle 333 will also be gradually pressed into the slide groove 19, and when the pressure buckle 333 is separated from the vibration ring 331, the pressure spring 332 is released to push the vibration ring 331 downward, so that the vibration ring 331 moves downward to squeeze the pressure spring 332 below, and then the vibration ring 331 is pushed upward by the pressure spring 332 below to squeeze the pressure spring 332 above, thereby generating high-frequency vibration reciprocatingly, thereby vibrating the filter element 31 to achieve the effect of clearing blockage.

[0033] Finally Figure 6 It can be found that the inner wall of the annular groove 8 is located above the slide groove 19 and is fixedly connected with a limit block 25, which can be used to limit the downward movement of the ring 32 to prevent the ring 32 from escaping from the annular groove 8, so as to ensure that the filter element 31 will not be separated from the airway 7 when in use, thereby ensuring the stability of the filter element 31.

[0034] In a further preferred embodiment of the present invention, Figure 1 As shown, an observation window 21 is provided on one side of the outer wall of the shell 1 close to the circulation chamber 10 , and a water changing interface 22 for changing water is installed below the observation window 21 .

[0035] In this embodiment, when the pressure relief hole 9 releases pressure, the liquid in the circulation chamber 10 will filter the dust in the air, so that the dust will remain in the liquid. Therefore, when the vacuum cleaner is operated for a long time, the liquid in the circulation chamber 10 will become turbid, affecting the subsequent air purification effect of the vacuum cleaner.

[0036] Therefore, an observation window 21 is provided on one side of the circulation chamber 10 on the outer wall of the shell 1, which can be used to observe the state inside the circulation chamber 10. When the water is polluted, the sewage can be discharged through the water change interface 22 at the bottom of the shell 1, and new clean water can be injected to ensure the air filtration performance of the vacuum cleaner.

[0037] In a further preferred embodiment of the present invention, Figure 5 As shown, a baffle 23 is hinged above the opening of the input port 11, and the width of the baffle 23 is greater than the width of the input port 11; A guide plate 24 is fixedly connected above the opening of the outlet 12 , and an inclination angle is set between the guide plate 24 and the inner wall of the vertical section 101 .

[0038] In this embodiment, since the circulation chamber 10 stores liquid, the liquid will overflow through the input port 11 and enter the air inlet 5, causing the environment in the air inlet 5 to deteriorate, affecting the air purification effect of the vacuum cleaner. Figure 5 It can be found that a baffle 23 is hinged above the opening of the input port 11, and the width of the baffle 23 is greater than the width of the input port 11, so that when the baffle 23 falls under gravity, it will block the input port 11 and prevent liquid from overflowing.

[0039] When the liquid moves with the gas to the top of the one-way valve 103, a small amount of the liquid will be drawn by the air into the outlet 12, causing the liquid containing dust particles to soak the inner wall of the outlet 12. After the liquid dries, the dust particles will be discharged through the exhaust port 6 along with the air flow, affecting the filtering performance of the vacuum cleaner. Figure 5 It can be found that a guide plate 24 is fixedly connected above the opening of the outlet 12, and an inclination angle is set between the guide plate 24 and the inner wall of the vertical section 101, so that when the liquid approaches the outlet 12, it is pulled away from the outlet 12 by the guide plate 24, thereby effectively preventing the liquid from being pulled by the air and deviating into the outlet 12, thereby ensuring that the air will not carry dust when discharged during pressure relief.

[0040] In a further preferred embodiment of the present invention, Figure 3 As shown, the filter element 31 is composed of a pre-filter layer 311 , a HEPA filter layer 312 , an activated carbon layer 313 and an electrostatic adsorption layer 314 .

[0041] In this embodiment, by making the filter element 31 consist of a pre-filter layer 311, a HEPA filter layer 312, an activated carbon layer 313 and an electrostatic adsorption layer 314, the air can preferentially contact the outermost pre-filter layer 311 when entering the air inlet 5, so that the pre-filter layer 311 can capture larger particles, such as dust, hair, pet hair, etc., to extend the life of subsequent filter layers and prevent large particles from clogging the fine filter element.

[0042] Subsequently, the air that has been initially filtered will come into contact with the HEPA filter layer 312, which is made of extremely fine glass fiber or synthetic fiber, and the fiber diameter is usually between 0.5 and 2 microns, which can effectively capture fine particles larger than 0.3 microns, such as PM2.5, pollen, bacteria, viruses, etc. The filtration efficiency is as high as 99.97%, which improves the air filtration effect.

[0043] Subsequently, the finely filtered air will come into contact with the activated carbon layer 313, and the activated carbon will remove odors, harmful gases (such as formaldehyde, volatile organic compounds), smoke and other organic pollutants in the air through physical adsorption and chemical reactions, thereby removing odors in the air and further improving the air purification effect.

[0044] Finally, the air will contact the electrostatic adsorption layer 314, which uses the electrostatic principle to adsorb tiny particles in the air, such as smoke, bacteria, etc. This layer can enhance the overall filtering effect, especially for very small particles, and further enhance the air purification performance.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum cleaner for purifying air, characterized in that: It comprises a shell (1), the bottom and top of which are respectively provided with an air inlet (5) and an air outlet (6), and the air inlet (5) and the air outlet (6) are connected via an air passage (7); A negative pressure fan (2) fixedly connected to a side of the air duct (7) close to the exhaust port (6); A filter assembly (3) comprising a filter element (31), a collar (32) and a vibration unit (33); the filter element (31) is arranged at a location in the air inlet (5) located in the air passage (7); the collar (32) is clamped on the top of the filter element (31); an inner wall of the air inlet (5) located outside the air passage (7) is provided with a circular groove (8) for the collar (32) to slide; and a vibration unit (33) is arranged between the outer wall of the collar (32) and the circular groove (8); A pressure relief piston (4), an inner wall of the air inlet (5) is provided with a pressure relief hole (9), an end of the pressure relief hole (9) away from the air inlet (5) is connected to the air passage (7), and a pressure relief piston (4) is slidably connected in the pressure relief hole (9); A circulation chamber (10) is provided in the housing (1) on a side of the pressure relief hole (9) away from the air inlet (5). The circulation chamber (10) is mainly composed of two vertical sections (101) and two rotary sections (102). The two vertical sections (101) are arranged at intervals in the horizontal direction. The upper and lower ends of the two vertical sections (101) are respectively connected through the two rotary sections (102). A one-way valve (103) is fixedly connected to one of the vertical sections (101) close to the air inlet (5). A water retaining plate (104) is fixedly connected below the one-way valve (103). The surface of the water retaining plate (104) is evenly distributed with water leakage holes for forming a water curtain. An input port (11) and an output port (12) are respectively provided in the vertical section (101) below the water retaining plate (104) and above the one-way valve (103). The pressure relief hole (9) is disconnected on one side close to the circulation chamber (10), and the two disconnected portions are respectively connected to the input port (11) and the output port (12).

2. The vacuum cleaner for purifying air according to claim 1, characterized in that: A pressure chamber (13) is provided in the pressure relief hole (9) at the bottom of the outer peripheral side of the pressure relief piston (4); a flow channel (14) communicating with the annular groove (8) is provided at the top of the pressure chamber (13); a pressure plate (15) for squeezing air is slidably connected to the bottom of the pressure chamber (13); the pressure plate (15) is fixedly connected to the bottom of the pressure relief piston (4).

3. The vacuum cleaner for purifying air according to claim 2, characterized in that: A circular hole (16) is formed at the bottom of the pressure relief piston (4), and an exhaust groove (17) communicating with the circular hole (16) is formed at the top of the outer peripheral wall of the pressure relief piston (4); The length of the pressure relief piston (4) is greater than the length of the pressure chamber (13), so that when the pressure plate (15) is located at the bottom of the pressure chamber (13), the exhaust groove (17) is blocked by the inner wall of the pressure relief hole (9).

4. The vacuum cleaner for purifying air according to claim 2, characterized in that: The vibration unit (33) comprises a vibration ring (331), a pressure spring (332) and a pressure buckle (333); the outer wall of the sleeve ring (32) is concavely formed with a vibration groove (18); the vibration ring (331) is slidably arranged in the vibration groove (18); and pressure springs (332) are fixedly connected between both sides of the vibration ring (331) and the vibration groove (18); A slide groove (19) is provided on the inner wall of the annular groove (8) at a side of the vibration ring (331) close to the filter element (31), and a pressure buckle (333) for clamping the vibration ring (331) is slidably connected in the slide groove (19).

5. The vacuum cleaner for purifying air according to claim 4, characterized in that: A diversion hole (20) is provided in the middle of the flow channel (14), and one end of the diversion hole (20) away from the flow channel (14) is in communication with the slide groove (19).

6. The vacuum cleaner for purifying air according to claim 1, characterized in that: An observation window (21) is provided on a side of the outer wall of the housing (1) close to the circulation chamber (10), and a water changing interface (22) for changing water is installed below the observation window (21).

7. The vacuum cleaner for purifying air according to claim 6, characterized in that: A baffle (23) is hingedly connected above the opening of the input port (11), and the width of the baffle (23) is greater than the width of the input port (11); A guide plate (24) is fixedly connected above the opening of the outlet (12), and an inclination angle is provided between the guide plate (24) and the inner wall of the vertical section (101).

8. The vacuum cleaner for purifying air according to claim 1, characterized in that: The filter element (31) is composed of a pre-filter layer (311), a HEPA filter layer (312), an activated carbon layer (313), and an electrostatic adsorption layer (314).

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