Air purifier for self-cleaning fresh air system

Abstract

The present invention proposes an air purifier for a self-cleaning fresh air system, comprising a body, a control box, an air inlet cover, a fresh air cover, a filter element assembly, a negative pressure fan and a movable base. The body comprises a main casing, and the air inlet cover and the fresh air cover are rotatably arranged on both sides of the main casing. A driving mechanism for driving the air inlet cover and the fresh air cover to rotate is arranged inside the movable base. An elastic automatic scraper is arranged on the inner side of each of the air inlet cover and the fresh air cover. A partition is arranged in the middle of the main casing and divides the interior of the main casing into an air inlet chamber and a fresh air chamber. A negative pressure fan and a back-blowing fan are arranged on the partition. The main casing is provided with an outer convex shell at the packaging node position between the main casing and the air inlet cover and the fresh air cover, and a feeding mechanism is arranged on the inner side of the outer convex shell. The device has a reasonable design and a simple structure. It can shorten the cleaning cycle and automatically clean the filter element to a certain extent during each cleaning process. It has a high utilization rate and is conducive to improving the air treatment effect. It is suitable for large-scale promotion.

Description

Technical Field

[0001] The present invention belongs to the field of fresh air systems, and in particular relates to an air purifier for a self-cleaning fresh air system. Background Art

[0002] The fresh air system is an independent air treatment system consisting of an air supply system and an exhaust system. It can usually be divided into two types: ducted fresh air systems and ductless fresh air systems. As part of the fresh air system, the air purifier can effectively control the air quality because the filter element inside it can basically filter out most of the filterable pollutants in the air. The filter element of the air purifier is the main processing unit, which generally includes a primary filter layer, an activated carbon filter layer, a HEPA high-efficiency filter layer, a UV light sterilization layer, a photocatalyst sterilization layer and a negative ion air freshening layer. Since the air purifier will be attached to a large amount of filtered matter if it is used for a long time, if these filtered matter are not cleaned in time, it will greatly affect the subsequent air treatment effect, especially the large amount of hair, fibers and large dust particles attached to the outermost layer.

[0003] Existing air purifiers, including household air purifiers, generally do not have an autonomous cleaning function. Most need to be manually disassembled and cleaned with some cleaning tools. However, due to the low frequency of manual cleaning, the purification effect of the air purifier is not fully utilized. Summary of the Invention

[0004] In response to the technical problems existing in the above-mentioned air purifiers, the present invention proposes a self-cleaning air purifier for a fresh air system with a reasonable design, simple structure, the ability to automatically clean the filter element to a certain extent, high utilization rate and conducive to improving the air treatment effect.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides an air purifier for a self-cleaning fresh air system, including a body, a control box, an air inlet cover and a fresh air cover are provided on the body, a filter core assembly and a negative pressure fan are provided inside the body, a movable base is provided at the bottom of the body, the body includes a main casing, the air inlet cover and the fresh air cover are rotatably arranged on both sides of the main casing, a driving mechanism for driving the air inlet cover and the fresh air cover to rotate is provided inside the movable base, an elastic automatic scraper is provided on the inner side of the air inlet cover and the fresh air cover, and the automatic scraper is connected to the filter core assembly The main casing is in surface contact and cooperation, a partition is provided in the middle of the main casing and the interior of the main casing is divided into an air inlet chamber and a fresh air chamber, the partition is provided with a first mounting component located in the center thereof and four second mounting components evenly distributed on the sides of the first mounting component, the first mounting component is used to install a negative pressure fan, and the second mounting component is used to install a back-blowing fan, the main casing is provided with an outer convex shell at the packaging node position between the main casing and the air inlet cover and the fresh air cover, a feeding mechanism is provided on the inner side of the outer convex shell, and solid convex plates are provided between the outer convex shells, the side of the solid convex plate facing away from the main casing is an arc surface, and a handle is provided on the arc surface.

[0006] Preferably, the top and bottom of the fresh air cavity are both provided with folding garments connected to the air inlet cover, and the folding direction of the folding garments is the same as the opening and closing direction of the air inlet cover.

[0007] Preferably, the convex shell is a triangular structure and a cleaning port is provided at one end thereof away from the main housing, a flip cover rotatably connected to the convex shell is provided on the outside of the cleaning port, and a pressure ring nested with the cleaning port is provided on the flip cover.

[0008] Preferably, the feeding mechanism includes a pair of rotating shafts, a spiral blade is provided on the rotating shaft, and the inner wall of the outer convex shell is provided with an elastic tooth piece engaged with the spiral blade, the tooth width of the elastic tooth piece is smaller than the groove width formed by the spiral blade and the rotating shaft, and shaft sleeves are provided at both ends of the rotating shaft, and the shaft sleeves are connected to the hinge shaft provided on the inner wall of the main housing, and a feeding motor is provided at the power input end of the rotating shaft.

[0009] Preferably, the movable base is provided with a limited height roller at one end thereof facing the handle.

[0010] Preferably, the first mounting assembly includes a flange of an annular structure, the flange being provided with a plurality of connecting holes and recessed grooves corresponding to the connecting holes near its inner ring, a mounting plate being provided at the center of the flange, the mounting plate including a plurality of connecting ears corresponding to the connecting holes and the recessed grooves, and the inner wall of the mounting plate being nested and connected to the negative pressure fan.

[0011] Preferably, the second mounting assembly includes two sleeves connected front to back, the sleeves cooperate with the through holes provided on the partition, and the ends of the sleeves are provided with limiting ring plates.

[0012] Preferably, the automatic scraper is a C-shaped structure, the two ends of the automatic scraper are connected to the top and bottom of the air inlet cover, and the working surface of the automatic scraper is consistent with the height direction of the filter element assembly.

[0013] Preferably, the main housing is provided with a flexible blocking plate at one end thereof which is rotatably connected to the air inlet cover and the fresh air cover, and both sides of the flexible blocking plate are in sliding contact with the ends of the air inlet cover and the fresh air cover, and the flexible blocking plate is provided with a plurality of vertical extrusion deformation grooves.

[0014] Preferably, the driving mechanism includes a driving motor, a power output end of the driving motor is provided with a reduction gear set, and the power output end of the reduction gear set is provided with two transmission hinges, and the two transmission hinges are respectively connected to the air inlet cover and the fresh air cover.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. The present invention provides an air purifier for a self-cleaning fresh air system. The driving mechanism can drive the air inlet cover and the fresh air cover to swing regularly. The automatic scraper slides along the surface of the filter element assembly while the air inlet cover automatically swings, scraping the hair, fibers, and large dust particles attached to the surface of the filter element assembly toward the feeding mechanism. The feeding mechanism swallows the cleaned debris into the outer convex shell, and the cleaned materials in the outer convex shell are finally cleaned uniformly. The back-blowing blower can regularly back-blow the filter element assembly to ensure high flow of the filter element assembly, which is conducive to ensuring the air treatment quality of the device. The device has a reasonable design and a simple structure. By shortening the cleaning cycle and automatically cleaning the filter element to a certain extent during each cleaning process, the utilization rate is high and it is conducive to improving the air treatment effect, making it suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 An axonometric view of an air purifier for a self-cleaning fresh air system provided in an embodiment;

[0019] Figure 2 A front view of an air purifier (without an air inlet cover) for a self-cleaning fresh air system provided in an embodiment;

[0020] Figure 3 An axonometric view of an air purifier for a self-cleaning fresh air system provided in an embodiment in another direction;

[0021] Figure 4 An axonometric view of an air purifier for a self-cleaning fresh air system provided in an embodiment in another direction;

[0022] Figure 5 for Figure 2 A magnified schematic diagram of the structure A in the middle;

[0023] Figure 6 A front view of the elastic tooth piece provided in the embodiment;

[0024] In the above figures, 1. body; 1a. main casing; 1b. partition; 1c. outer convex shell; 1d. solid convex plate; 1e. cleaning port; 1f. flip cover; 2. control box; 3. air inlet cover; 4. fresh air cover; 5. filter element assembly; 6. negative pressure fan; 7. movable base; 8. driving mechanism; 9. automatic scraper; 10. first mounting assembly; 101. flange; 102. mounting plate; 103. connecting ear; 11. second mounting assembly; 111. sleeve; 112. limiting ring plate; 12. backblowing machine; 13. feeding mechanism; 131. rotating shaft; 132. spiral blade; 133. shaft sleeve; 134. hinge; 135. feeding motor; 136. elastic tooth plate; 14. handle; 15. folding clothes; 16. height limiting roller; 17. flexible blocking plate; 171. extrusion deformation groove. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other unless they conflict. For the convenience of description, the words "upper", "lower", "left", and "right" appearing below only indicate the upper, lower, left, and right directions consistent with the drawings themselves and do not limit the structure.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Examples, such as Figures 1 to 6As shown, the present invention provides an air purifier for a self-cleaning fresh air system, comprising a body 1, on which a control box 2, an air inlet cover 3 and a fresh air cover 4 are provided, a filter core assembly 5 and a negative pressure fan 6 are provided inside the body 1, a movable base 7 is provided at the bottom of the body 1, the body 1 comprises a main casing 1a, the air inlet cover 3 and the fresh air cover 4 are rotatably arranged on both sides of the main casing 1a, a driving mechanism 8 for driving the air inlet cover 3 and the fresh air cover 4 to rotate is provided inside the movable base 7, an elastic automatic scraper 9 is provided on the inner side of the air inlet cover 3 and the fresh air cover 4, the automatic scraper 9 is in contact with the surface of the filter core assembly 5, a partition 1b is provided in the middle of the main casing 1a and the interior of the main casing 1a is divided into an inlet and a fresh air cover. The air cavity and the fresh air cavity, the partition 1b is provided with a first mounting component 10 located in the center thereof and four second mounting components 11 evenly distributed on the sides of the first mounting component 10. The first mounting component 10 is used to install the negative pressure fan 6, and the second mounting component 11 is used to install the back-blowing fan 12. The main casing 1a is provided with a convex shell 1c at the packaging node position between it and the air inlet cover 3 and the fresh air cover 4. A feeding mechanism 13 is provided on the inner side of the convex shell 1c, and a solid convex plate 1d is provided between the convex shells 1c. The side of the solid convex plate 1d facing away from the main casing 1a is an arc surface, and a handle 14 is provided on the arc surface. The handle includes a curved surface corresponding to the arc surface and two right-angled surfaces, forming a triangular structure handle, which is conspicuously located and easy to hold. Among them, the first mounting component 10 and the second mounting component 11 can be quickly assembled with the back-blowing fan 12 and the negative pressure fan 6; the solid convex plate 1d serves as the installation base of the handle 14, so that the contact range between the handle 14 and the human hand avoids the outer convex shell 1c, so there will be no hand jamming, which facilitates manual transfer of the device.

[0028] Specifically, the air purifier adopts a symmetrical double-opening form, which, on the one hand, facilitates the automatic scraper 9 at the air inlet cover 3 and the fresh air cover 4 to perform automatic cleaning operations, and on the other hand, can reduce the mold opening cost of the device. More specifically, the drive mechanism 8 can drive the air inlet cover 3 and the fresh air cover 4 to swing regularly. In particular, while the automatic scraper 9 at the air inlet cover 3 automatically swings with the air inlet cover 3, its scraping surface always contacts the surface of the filter core assembly 5 under its elastic action and slides along the surface of the filter core assembly 5. This process can scrape hair, fibers and large particles of dust attached to the surface of the filter core assembly 5 toward the feeding mechanism 13. The feeding mechanism 13 swallows the cleaned debris into the convex shell 1c. The cleaned objects in the convex shell 1c are finally cleaned uniformly by humans. The back-blowing device 12 can be started at a fixed time according to the design of the chip in the control box 2 to back-blow the filter core assembly 5, which can ensure the high flow of the filter core assembly 5 and help ensure the air treatment quality of the device. This device shortens the cleaning cycle and automatically performs a certain degree of wind cleaning and mechanical cleaning on the filter element during each cleaning process, which is beneficial to improving the air treatment effect and having a higher utilization rate.

[0029] To improve the efficiency of the device's mechanical cleaning of the filter element assembly surface, the present invention provides folding garments 15 connected to the air inlet cover 3 at both the top and bottom of the fresh air chamber. The folding direction of the folding garment 15 is the same as the opening and closing direction of the air inlet cover 3. In this way, after receiving power from the drive mechanism 8, the air inlet cover 3 can move synchronously with the folding garment 15. During the unfolding and folding process, the folding garment 15 will not allow debris scraped off by the automatic scraper 9 to escape from the device, but will instead be swallowed up in an orderly manner by the feeding mechanism 13 into the outer convex shell 1c. It should be noted that the weight of the cleaned material scraped off by the automatic scraper 9 is not too high, especially since the device increases the frequency of cleaning. Therefore, the cleaned material can move along the scraping direction of the automatic scraper 9 toward the feeding mechanism 13, and will not fall into large clumps and accumulate within the receiving range of the air inlet cover 3 and the folding garment 15.

[0030] To facilitate centralized processing of objects to be cleaned, the convex housing 1c provided by the present invention has a triangular structure and is provided with a cleaning port 1e at one end away from the main housing 1a. A flip cover 1f is provided on the outside of the cleaning port 1e, which is rotatably connected to the convex housing 1c. The flip cover 1f is provided with a pressure ring that nests with the cleaning port 1e. In this way, the objects to be cleaned that are collected by the feeding mechanism 13 can fall on the inclined bottom surface of the convex housing 1c and accumulate layer by layer toward the cleaning port 1e until the flip cover 1f is manually opened and the accumulated objects are processed. Because the pressure ring of the flip cover 1f is in pressure contact with the cleaning port 1e, the cleaning port 1e can be correspondingly sealed at other times.

[0031] Furthermore, the movable base 7 is provided with a height-limiting roller 16 at one end thereof facing the handle 14 , and the device can be tilted backward with the rear wheel and the height-limiting roller 16 as a fulcrum, so as to facilitate cleaning out the objects to be cleaned from the cleaning opening 1 e.

[0032] In order to improve the feeding effect of the feeding mechanism 13 on the cleaned objects, the feeding mechanism 13 provided by the present invention includes a pair of rotating shafts 131, and a spiral blade 132 is provided on the rotating shaft 131. The inner wall of the outer convex shell 1c is provided with an elastic tooth piece 136 engaged with the spiral blade 132. The tooth width of the elastic tooth piece 136 is smaller than the groove width formed by the spiral blade 132 and the rotating shaft 131. Both ends of the rotating shaft 131 are provided with a shaft sleeve 133, and the shaft sleeve 133 is axially connected to the hinge 134 provided on the inner wall of the main housing 1a. The power input end of the rotating shaft 131 is provided with a feeding motor 135. Among them, the feeding motor 135 inputs power to the rotating shaft 131, and the cleaned objects are scraped from the scraping surface of the automatic scraper 9 and then swallowed into the outer convex shell 1c by the two spiral blades 132 in a staggered manner; the elastic tooth piece 136 seals the rotation path of the spiral blade 132, and the pitch of the spiral blade 132 can be designed to be smaller. Accordingly, the design density of the elastic tooth piece 136 is larger, and such a design can prevent the cleaned objects that enter the outer convex shell 1c from returning to the air inlet chamber.

[0033] In order to improve the efficiency of disassembly and assembly of the negative pressure fan 6, the present invention uses a first mounting assembly 10 as a pre-assembled structure of the negative pressure fan 6. The first mounting assembly 10 includes a flange 101 of an annular structure. The flange 101 is provided with a plurality of connection holes and recessed grooves corresponding to the connection holes near its inner ring. A mounting plate 102 is provided at the center of the flange 101. The mounting plate 102 includes a plurality of connection ears 103 corresponding to the connection holes and recessed grooves. The inner wall of the mounting plate 102 is nested and connected with the negative pressure fan 6. The flange 101 and the mounting plate 102 are pre-assembled and assembled and then installed on the partition 1b, and the negative pressure fan 6 can be directly nested on the mounting plate 102.

[0034] To improve the efficiency of assembly and disassembly of the blower 12, the present invention utilizes a second mounting assembly 11 as a pre-assembled structure for the blower 12. The second mounting assembly 11 comprises two sleeves that engage with holes provided in the bulkhead 1b, with retaining rings provided at their ends. The two sleeves are nested in the bulkhead 1b in a front-to-back arrangement, with the blower 12 sandwiched between them. The outer surface of the retaining ring controls the nesting position of the sleeves with the bulkhead 1b, while the outer surface of the retaining ring controls the nesting position of the blower 12 within the sleeves.

[0035] To improve the practicality of the automatic scraper 9, the present invention provides a C-shaped structure. The ends of the automatic scraper 9 are connected to the top and bottom of the air inlet cover 3, and the working surface of the automatic scraper 9 is aligned with the height of the filter element assembly 5. The C-shaped design of the automatic scraper 9 ensures that it has a large hollow area without losing its elasticity, ensuring that the air inlet cover 3 can continuously enter the air under the negative pressure. The scraping work surface of the automatic scraper 9 is completed by its middle section.

[0036] To improve the sealing performance of the device, the main housing 1a of the present invention is provided with a flexible baffle 17 at one end thereof, which is rotatably connected to the air inlet cover 3 and the fresh air cover 4. Both sides of the flexible baffle 17 are in sliding contact with the ends of the air inlet cover 3 and the fresh air cover 4. The flexible baffle 17 is provided with a plurality of vertical extrusion deformation grooves 171. The two sides of the flexible baffle 17 seal the air inlet cover 3 and the fresh air, and the extrusion deformation grooves 171 can appropriately expand and contract during the rotation of the air inlet cover 3 and the fresh air cover 4, thereby maintaining a certain degree of sealing between the air inlet and fresh air cavities without significantly affecting the rotation of the air inlet cover 3 and the fresh air cover 4.

[0037] The driving mechanism 8 provided by the present invention includes a driving motor, and a reduction gear group is provided at the power output end of the driving motor. The power output end of the reduction gear group is provided with two transmission hinge shafts, and the two transmission hinge shafts are respectively connected to the air inlet cover 3 and the fresh air cover 4 for transmission. The driving mechanism 8 drives the air inlet cover 3 and the fresh air cover 4 through the reduction gear group and the transmission hinge shaft. If the fresh air cover 4 does not need to rotate, it can be matched with the transmission hinge shaft with a smooth surface.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An air purifier for a self-cleaning fresh air system, comprising a body, a control box, an air inlet cover, and a fresh air cover provided on the body, a filter element assembly and a negative pressure blower provided inside the body, and a movable base provided at the bottom of the body, characterized in that: The body includes a main casing, the air inlet cover and the fresh air cover are rotatably arranged on both sides of the main casing, and a driving mechanism for driving the air inlet cover and the fresh air cover to rotate is provided inside the movable base, and an elastic automatic scraper is provided on the inner side of the air inlet cover and the fresh air cover, and the automatic scraper contacts and cooperates with the surface of the filter element assembly, a partition is provided in the middle of the main casing and divides the interior of the main casing into an air inlet chamber and a fresh air chamber, and the partition is provided with a first mounting assembly located at the center thereof and four second mounting assemblies evenly distributed on the sides of the first mounting assembly, the first mounting assembly is used to install a negative pressure fan, and the second mounting assembly is used to install a back-blowing machine, the main casing is provided with an outer convex shell at the packaging node position between it and the air inlet cover and the fresh air cover, a feeding mechanism is provided on the inner side of the outer convex shell, and a solid convex plate is provided between the outer convex shells, and the side of the solid convex plate facing away from the main casing is an arc surface, and a handle is provided on the arc surface; The feeding mechanism includes a pair of rotating shafts, a spiral blade is provided on the rotating shaft, and the inner wall of the outer convex shell is provided with an elastic tooth piece engaged with the spiral blade, the tooth width of the elastic tooth piece is smaller than the groove width formed by the spiral blade and the rotating shaft, and shaft sleeves are provided at both ends of the rotating shaft, and the shaft sleeves are connected to the hinge shaft provided on the inner wall of the main housing, and a feeding motor is provided at the power input end of the rotating shaft.

2. The self-cleaning air purifier for fresh air system according to claim 1, characterized in that: The top and bottom of the fresh air cavity are both provided with folding clothes connected to the air inlet cover, and the folding direction of the folding clothes is the same as the opening and closing direction of the air inlet cover.

3. The self-cleaning air purifier for fresh air system according to claim 2, characterized in that: The outer convex shell is a triangular structure and a cleaning port is provided at one end thereof away from the main shell. A flip cover rotatably connected to the outer convex shell is provided on the outside of the cleaning port, and a pressure ring nested with the cleaning port is provided on the flip cover.

4. The self-cleaning air purifier for fresh air system according to claim 3, characterized in that: The movable base is provided with a limited height roller at one end thereof facing the handle.

5. The self-cleaning air purifier for fresh air system according to claim 4, characterized in that: The first mounting assembly includes a flange of an annular structure, and the flange is provided with a plurality of connecting holes and recessed grooves corresponding to the connecting holes near its inner circle. A mounting plate is provided at the center of the flange, and the mounting plate includes a plurality of connecting ears corresponding to the connecting holes and the recessed grooves. The inner wall of the mounting plate is nested and connected to the negative pressure fan.

6. The self-cleaning air purifier for fresh air system according to claim 5, characterized in that: The second mounting assembly includes two sleeves connected front and back, the sleeves are matched with through holes provided on the partition, and the ends of the sleeves are provided with limiting ring plates.

7. The self-cleaning air purifier for fresh air system according to claim 1, characterized in that: The automatic scraper is a C-shaped structure, and both ends of the automatic scraper are connected to the top and bottom of the air inlet cover. The working surface of the automatic scraper is consistent with the height direction of the filter core assembly.

8. The self-cleaning air purifier for fresh air system according to claim 1, characterized in that: The main housing is provided with a flexible blocking plate at one end thereof which is rotatably connected to the air inlet cover and the fresh air cover. Both sides of the flexible blocking plate are in sliding contact with the ends of the air inlet cover and the fresh air cover. The flexible blocking plate is provided with a plurality of vertical extrusion deformation grooves.

9. The self-cleaning air purifier for fresh air system according to claim 1, characterized in that: The driving mechanism includes a driving motor, a power output end of the driving motor is provided with a reduction gear set, and the power output end of the reduction gear set is provided with two transmission hinge shafts, and the two transmission hinge shafts are respectively connected to the air inlet cover and the fresh air cover.

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