Air purifier with linkage dismounting filter screen structure

Abstract

The present application relates to a kind of air purifiers with linkage dismounting filter screen structure, the linkage structure of the present application structure is through "outer air inlet+filter cover+inner air inlet+inner cover assembly", effectively solve the problem of air inlet exposure.When filter screen needs to be removed, inner cover assembly needs to be slid to close inner air inlet, at this time, the unlocking assembly on inner cover assembly will unlock the locking device of filter cover, allowing filter cover to be opened to replace filter screen.In this process, inner air inlet has been closed in advance, the air duct inside the equipment is completely isolated from the outside world, and the outside world cannot enter the interior of the equipment.The contact area of filter screen and air is reduced when filter screen and filter cover are detachably connected, and the risk of dispersion of impurities falling from old filter screen is reduced, which fundamentally avoids the pollution of the interior of the equipment and the secondary pollution of indoor air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air purifiers, in particular to an air purifier with a linkage dismounting filter screen structure. BACKGROUND

[0002] With the increasing emphasis on indoor air quality, air purifiers have become an indispensable electrical appliance in homes, offices and other places. Its core working principle is to filter particulate matter, odors and other impurities in the air through internal filter screens, thereby achieving air purification. However, in the long-term use process, the existing air purifiers have obvious defects in filter screen maintenance and use convenience, mainly in the following two points:

[0003] On the one hand, the exposure of the air inlet when the filter screen is taken out causes the internal pollution of the equipment. The filter screen of the current air purifier is mostly installed in the internal chamber of the equipment, and the equipment shell (such as the top cover plate, side panel, etc.) needs to be disassembled when replacing the filter screen. This process will completely expose the air inlet inside the equipment to the air. The unfiltered air from the outside will directly enter the internal chamber through the exposed air inlet, which not only may pollute the internal air duct, fan motor assembly and other core components, affecting the service life of the equipment, but also may cause the subsequent internal accumulation of impurities to be discharged with the airflow, thereby causing secondary pollution of indoor air. In addition, a large amount of dust, bacteria and other impurities adsorbed on the old filter screen may also fall off and spread due to the airflow disturbance caused by the exposure of the air inlet during the taking-out process, further aggravating the deterioration of indoor air quality.

[0004] On the other hand, the single filter screen design forces the equipment to stop when replacing the filter screen, affecting the continuity of purification. Most of the existing air purifiers are equipped with only a single air inlet and a single filter screen, so that once the filter screen needs to be replaced, the equipment must be stopped, otherwise the unfiltered air will directly enter and be discharged through the air inlet without filter screen shielding. This results in that the air purifier cannot work normally during the replacement of the filter screen, and cannot achieve online replacement of the filter screen without stopping, affecting the continuity of purification. SUMMARY

[0005] The present application aims to at least solve one of the problems existing in the prior art, and for this purpose, the present application provides an air purifier with a linkage dismounting filter screen structure.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides an air purifier with linkage dismounts filter screen structure, including the base shell of cylindrical, the inner tube of being located in the base shell and the fan motor assembly of being located in the upper end of inner tube, the upper end of base shell is provided with the air outlet assembly, the front and back symmetry of the outer wall of base shell is provided with two outer air inlets, the inner air inlet of being provided with two with the outer air inlet corresponding setting on the inner tube, the filter cover shell of being installed with the through hole of being full of is hinged on each outer air inlet, the filter screen and locking device are provided with in the inner side of filter cover shell, filter screen and filter cover shell can be detachably installed, locking device can lock filter cover shell in the form of closing outer air inlet, the outer wall of inner tube is slidably installed along the circumference of inner cover assembly, the unlocking assembly is provided on the inner cover assembly, the inner cover assembly can slide and close or open the inner air inlet, and when the inner cover assembly closes the inner air inlet, the unlocking assembly unlocks the locking device.

[0008] In some embodiments, a hinge shaft is provided at the middle of the lower end of the filter cover shell, and a hinge seat is provided at the middle of the lower end of the outer air inlet.

[0009] In some embodiments, a handle is provided at the outer side of the upper end of the filter cover shell.

[0010] In some embodiments, there are arc-shaped sliding grooves on the inner side of the filter cover shell symmetrically in up and down directions, and the filter screen is slidably arranged in the two arc-shaped sliding grooves.

[0011] In some embodiments, a plurality of pressing strips are spaced apart in up and down directions in the outer air inlet, and the pressing strips press the filter screen on the filter cover shell when the filter cover shell is closed on the outer air inlet.

[0012] In some embodiments, the locking device comprises a fixed seat provided on the inner side of the filter cover shell, an elastic locking piece provided on the lower side of the fixed seat, and a clamping strip provided in the outer air inlet, and the elastic locking piece is clamped on the inner side of the clamping strip when the filter cover shell is closed on the outer air inlet.

[0013] In some embodiments, the elastic locking piece comprises a movable groove provided on the lower side of the fixed seat, a locking block movably arranged in the movable groove, a spring arranged between the locking block and the movable groove to keep the locking block in a downward position, a locking gap formed between the locking block and the inner wall of the filter cover shell when the locking block extends out of the movable groove, and a first guide inclined surface provided on the lower end of the locking block.

[0014] In some embodiments, the unlocking assembly includes a top plate arranged on the inner cover assembly, when the top plate slides to close the inner air inlet along with the inner cover assembly, the top plate pushes the locking block into the movable slot, and the top plate is provided with a second guide slope for contacting one end of the locking block.

[0015] In some embodiments, the inner cover assembly includes two arc-shaped sliding plates arranged at intervals left and right, the two arc-shaped sliding plates slide to close the inner air inlet, and the two arc-shaped sliding plates are provided with unlocking assemblies, the elastic locking members are arranged at intervals left and right, and are correspondingly arranged with the two unlocking assemblies.

[0016] In some embodiments, a push block is arranged on the arc-shaped sliding plate, and a guide sliding groove for sliding the push block is correspondingly arranged on the outer wall of the base shell.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] 1. The structure of the present application effectively solves the problem of exposed air inlet through the linkage structure of "outer air inlet + filter cover shell + inner air inlet + inner cover assembly". When the filter screen needs to be taken out, the inner cover assembly needs to be slid to close the inner air inlet, at this time the unlocking assembly on the inner cover assembly will unlock the locking device of the filter cover shell, allowing the filter cover shell to be opened to replace the filter screen. In this process, the inner air inlet has been closed in advance, the internal air duct of the equipment is completely isolated from the outside world, and the outside air cannot enter the internal air duct of the equipment; at the same time, the filter screen and the filter cover shell are detachably connected, and the filter screen always remains relatively fixed with the cover shell during replacement, reducing the contact area of the filter screen and the air, reducing the risk of old filter screen impurity falling and spreading, and fundamentally avoiding the pollution of the internal air duct and the secondary pollution of indoor air.

[0019] 2. Two outer air inlets are symmetrically arranged on the front and back of the outer wall of the base shell, each outer air inlet is correspondingly provided with a filter cover shell and a filter screen, forming a double-filter-screen independent working structure. When one of the filter screens needs to be replaced, only the inner cover assembly and the filter cover shell on one side need to be operated: slide the corresponding side inner cover assembly to close the inner air inlet on that side, unlock and open the filter cover shell to replace the filter screen, while the filter screen on the other side remains in normal working condition, and the air purifier can continuously intake and filter air through the outer air inlet and the inner air inlet on the other side. This design completely breaks through the limitation of traditional single-filter-screen replacement, realizes non-stop replacement of the filter screen, effectively avoids the purification "window period", ensures that the indoor air is always in a continuous purification state, and is especially suitable for scenes with high requirements for air quality. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the air purifier of the present application.

[0021] Figure 2 This is a cross-sectional structural diagram of the air purifier of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the filter cover of the present invention when it is opened.

[0023] Figure 4 This is a schematic diagram of the inner cylinder of the present invention.

[0024] Figure 5 This is a partial cross-sectional schematic diagram of the filter cover of the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged diagram of point A. Detailed Implementation

[0026] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0027] like Figures 1-6 An air purifier with a linked detachable filter structure is shown, comprising a cylindrical base shell 1, an inner cylinder 2 disposed within the base shell 1, and a fan motor assembly 3 disposed at the upper end of the inner cylinder 2. An air outlet assembly 4 is disposed at the upper end of the base shell 1. Two external air inlets 5 are symmetrically arranged on the front and back of the outer wall of the base shell 1. Two internal air inlets 6 are disposed on the inner cylinder 2 corresponding to the external air inlets 5. A filter cover 7 with through holes is hinged to each of the external air inlets 5. The filter cover 7 is provided with a filter screen 8 and a locking device on its inner side. The filter screen 8 and the filter cover 7 are detachable and installable. The locking device can lock the filter cover 7 in the closed position of the external air inlet 5. An inner cover assembly is slidably installed on the outer wall of the inner cylinder 2 along its circumference. An unlocking component is provided on the inner cover assembly. The inner cover assembly can slide to close or open the internal air inlet 6. When the inner cover assembly closes the internal air inlet 6, the unlocking component unlocks the locking device.

[0028] When the fan motor assembly 3 is powered on, a negative pressure is created inside the inner cylinder 2. Outside air enters through the outer air inlet 5, and after being initially blocked by large particles of impurities through the through holes of the filter cover 7, it is filtered through the filter screen 8. The purified air enters the inner cylinder 2 and flows upward under the action of the fan, and is finally discharged from the air outlet assembly 4. At this time, the inner cover assembly is in the open state, the inner air inlet 6 is fully exposed, the locking device remains engaged, and the filter cover 7 stably covers the outer air inlet 5.

[0029] When the filter screen needs to be replaced, the inner cover assembly is pushed to slide along the inner cylinder 2 slide rail until it completely covers the inner air inlet 6; the unlocking assembly moves synchronously during the process, contacts and pries open the locking device, and releases the locking of the filter cover shell 7; the filter cover shell 7 is turned open, and the old filter screen 8 is taken out from the inside of the filter cover shell 7. After the new filter screen is installed, the cover shell is closed, and the locking device is automatically engaged; the inner cover assembly is reversely slid to open the inner air inlet 6, and the equipment restores the purification function.

[0030] Therefore, the structure of the present application effectively solves the problem of air inlet exposure through the linkage structure of "outer air inlet + filter cover shell + inner air inlet + inner cover assembly". When the filter screen 8 needs to be removed, the inner cover assembly needs to be slid to close the inner air inlet 6, at which time the unlocking assembly on the inner cover assembly will unlock the locking device of the filter cover shell 7, allowing the filter cover shell 7 to be opened to replace the filter screen. During this process, the inner air inlet 6 has been closed in advance, and the internal air duct of the equipment is completely isolated from the outside world, so that the uncleaned air outside cannot enter the internal part of the equipment; at the same time, the filter screen 8 is detachably connected with the filter cover shell 7, and the filter screen 8 always remains relatively fixed with the cover shell during replacement, reducing the contact area between the filter screen and the air and reducing the risk of old filter screen impurity falling and spreading, fundamentally avoiding the pollution of the internal part of the equipment and the secondary pollution of indoor air.

[0031] In addition, two outer air inlets 5 are symmetrically arranged on the front and back of the base shell 1 outer wall, and each outer air inlet 5 is correspondingly provided with a filter cover shell 7 and a filter screen 8, forming a double-filter-screen independent working structure. When one of the filter screens needs to be replaced, only the inner cover assembly and the filter cover shell 7 on that side need to be operated: slide the corresponding side inner cover assembly to close the inner air inlet on that side, unlock and open the filter cover shell to replace the filter screen, while the filter screen on the other side remains in normal working condition, and the air purifier can continue to intake and filter air through the outer air inlet and the inner air inlet on the other side. This design completely breaks through the limitation of traditional single-filter-screen replacement, realizes non-stop replacement of the filter screen, effectively avoids the purification "window period", ensures that the indoor air is always in a state of continuous purification, and is especially suitable for scenes with high requirements for air quality.

[0032] Further, a hinge shaft 21 is arranged at the middle position of the lower end of the filter cover shell 7, a hinge seat 22 is arranged at the middle position of the lower end of the outer air inlet 5, the hinge shaft 21 is rotatably arranged on the hinge seat 22, and a handle 31 is arranged on the outer side of the upper end of the filter cover shell 7.

[0033] When the filter screen is replaced, the unlocking device is unlocked, and the handle 31 is directly pulled outward, and the filter cover shell 7 rotates around the hinge seat 22 with the hinge shaft 21 as the center until it is completely opened.

[0034] Further, there are arc-shaped sliding grooves 41 symmetrically arranged on the inner side of the filter cover shell 7, and the filter screen 8 is slidably arranged in the two arc-shaped sliding grooves 41.

[0035] When installing filter screen 8, align the upper and lower edges of the filter screen with the inlet of the arc-shaped slide groove 41, and push the filter screen along the direction of the slide groove until the filter screen is completely attached to the inside of the cover. When disassembling, push the filter screen to slide in the opposite direction along the slide groove to remove it. The slide groove restricts the movement of the filter screen in the vertical direction, ensuring that the filter screen always covers the through hole of the cover and avoids displacement that could lead to filtration failure.

[0036] See Figure 2 , Figure 3 As shown, there are several pressure strips 51 spaced vertically inside the external air inlet 5. When the filter cover 7 is closed on the external air inlet 5, the pressure strips 51 press the filter screen 8 tightly onto the filter cover 7, thereby improving the stability of the filter screen 8 after installation.

[0037] See Figure 5 , Figure 6 As shown, the locking device includes a fixing seat 71 located inside the filter cover 7, an elastic locking member 72 located on the lower side of the fixing seat 71, and a retaining strip 73 located inside the external air inlet 5. When the filter cover 7 is closed to the external air inlet 5, the elastic locking member 72 is engaged with the inner side of the retaining strip 73.

[0038] Furthermore, the elastic locking member 72 includes a movable groove 61 located on the lower side of the fixed base 71, a locking block 62 is movably disposed in the movable groove 61, and a spring 63 is disposed between the locking block 62 and the movable groove 61 to keep the locking block 62 in a downward position. When the locking block 62 extends downward out of the movable groove 61, a locking gap 64 is formed between the locking block 62 and the inner wall of the filter cover 7, and the locking strip 73 can be locked in the locking gap 64. A first guide slope 65 is provided at the lower end of the locking block 62.

[0039] When the filter cover 7 is closed, the cover rotates around the hinge shaft 21, and the locking strip 73 contacts the first guide slope 65 of the locking block 62. The locking strip applies an oblique force to the slope, which is decomposed into an upward component force, pushing the locking block to compress the spring 63 and move it upward into the movable groove 61. When the cover is fully closed, the locking strip moves to the locking gap 64 position, the spring returns to its original state, pushes the locking block downward, and the locking strip engages in the gap to achieve locking. When unlocking, external force pushes the locking block upward, compresses the spring, the locking block enters the movable groove, the locking strip disengages from the gap, and the lock is released.

[0040] The unlocking component includes a top plate 81 disposed on the inner cover assembly. When the top plate 81 slides to close the inner air inlet 6 along with the inner cover assembly, the top plate 81 pushes its locking block 62 into the movable groove 61. The end of the top plate 81 used to contact and push the locking block 62 is provided with a second guide slope 82.

[0041] When the sliding inner cover assembly closes the inner air inlet 6, the top plate 81 moves synchronously with the inner cover assembly, and the second guide slope 82 gradually approaches the locking block 62. After contacting the locking block 62, the inner cover assembly continues to slide, the top plate 81 exerts an upward thrust on the locking block 62, pushes the locking block 62 to compress the spring 63 and move upward into the active slot 61, thereby releasing the locking of the clamping strip 73; when the inner cover assembly slides reversely, the top plate 81 is separated from the locking block 62, and the spring 63 pushes the locking block 62 to reset, so that the locking can be re-locked.

[0042] In the present application, the inner cover assembly comprises two arc-shaped sliding plates 91 which are arranged in a left-right interval and are combined to close the inner air inlet 6, and each of the two arc-shaped sliding plates 91 is provided with an unlocking assembly, and the elastic locking member 72 is provided with two groups which are arranged in a left-right interval and correspond to the two unlocking assemblies respectively.

[0043] When the air purifier is in normal operation and the filter screen does not need to be replaced, the two arc-shaped sliding plates 91 are in a left-right separation state and are located on both sides of the outer wall of the inner cylinder 2, at this time, the inner air inlet 6 is completely exposed and does not hinder the air entering the inner cylinder 2 from the inner air inlet 6. At the same time, since the two arc-shaped sliding plates are not combined, the unlocking assemblies (top plates 81) on the two arc-shaped sliding plates are not in effective contact with the elastic locking members 72 on the inner side of the filter cover shell 7, the elastic locking members 72 remain in the clamping state with the clamping strip 73 in the outer air inlet 5, and the filter cover shell 7 is stably combined on the outer air inlet 5, thereby ensuring the normal progress of the air inlet filtering process.

[0044] When the filter screen 8 needs to be replaced, the user needs to push the two arc-shaped sliding plates 91 at the same time, so that the two sliding plates slide to the middle along the annular sliding rail on the outer wall of the inner cylinder 2. With the movement of the sliding plates, the top plates 81 on the two sliding plates also move synchronously towards the elastic locking members 72. Since the elastic locking members 72 are provided with two groups which are arranged in a left-right interval and correspond to the two unlocking assemblies (top plates 81) respectively, only when the two arc-shaped sliding plates 91 are completely combined, the top plates 81 on both sides can be in precise contact with the corresponding elastic locking members 72.

[0045] After contacting, the top plate 81 continues to exert a thrust on the combined arc-shaped sliding plate, pushes the locking block 62 in the elastic locking member 72 into the active slot 61, so that the locking block 62 is separated from the clamping strip 73, thereby releasing the locking of the filter cover shell 7. If only one arc-shaped sliding plate 91 is pushed, the top plate 81 on the sliding plate can only contact one side of the elastic locking member 72, and cannot trigger the unlocking of the two groups of elastic locking members at the same time, so that the filter cover shell 7 is still in the locked state and cannot be opened.

[0046] Therefore, through the design that the left and right arc-shaped slides need to be combined to be unlocked, a "double trigger" unlocking mechanism is formed, which effectively avoids the unlocking caused by accidental touch of a single arc-shaped slide. For example, if one of the arc-shaped slides is accidentally touched in daily use, the other slide cannot be moved to achieve combination, the unlocking assembly cannot trigger the unlocking of the two sets of elastic locking members, and the filter cover shell remains locked, preventing the filter cover shell from being accidentally opened to expose the filter screen or allow foreign matter to enter the device, thereby significantly improving the safety and stability of the device in use.

[0047] The arc-shaped slide 91 is provided with a push block 10, and the base shell 1 is provided with a guide sliding groove 11 corresponding to the outer wall of the base shell 1 for sliding of the push block 10.

[0048] The arc-shaped slide 91 is provided with a push block 10, and the base shell 1 is provided with a guide sliding groove 11 corresponding to the outer wall of the base shell 1 for sliding of the push block 10.

[0049] The basic principles and main features of the present application and the advantages of the present application are shown and described above in combination with the drawings. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An air purifier with linkage dismounting filter screen structure, comprising a base shell (1) in a cylindrical shape, an inner cylinder (2) arranged in the base shell (1), and a fan motor assembly (3) arranged at the upper end of the inner cylinder (2), the upper end of the base shell (1) is provided with an air outlet assembly (4), characterized in that: Two outer air inlets (5) are symmetrically arranged on the outer wall of the base shell (1), two inner air inlets (6) are arranged on the inner cylinder (2) corresponding to the outer air inlets (5), a filter cover shell (7) with a plurality of through holes is hingedly mounted on each outer air inlet (5), a filter screen (8) and a locking device are arranged on the inner side of the filter cover shell (7), the filter screen (8) is detachably mounted with the filter cover shell (7), the locking device can lock the filter cover shell (7) in a closed state of the outer air inlet (5), an inner cover assembly is slidably mounted on the outer wall of the inner cylinder (2), an unlocking assembly is arranged on the inner cover assembly, the inner cover assembly can slide to close or open the inner air inlet (6), and when the inner cover assembly closes the inner air inlet (6), the unlocking assembly unlocks the locking device.

2. The air cleaner having a linkage dismounting filter screen structure according to claim 1, characterized in that: A hinge shaft (21) is arranged at the middle position of the lower end of the filter cover shell (7), a hinge seat (22) is arranged at the middle position of the lower end of the outer air inlet (5), and the hinge shaft (21) is rotatably arranged on the hinge seat (22).

3. The air cleaner having a linkage dismounting filter screen structure according to claim 2, characterized in that: A handle (31) is arranged on the outer side of the upper end of the filter cover shell (7).

4. The air cleaner having a linkage dismounting filter screen structure according to claim 1, characterized in that: Arc-shaped sliding grooves (41) are symmetrically arranged on the inner side of the filter cover shell (7), and the filter screen (8) is slidably arranged in the two arc-shaped sliding grooves (41).

5. The air cleaner having a linkage dismounting filter screen structure according to claim 4, wherein: A plurality of pressing strips (51) are arranged in the outer air inlet (5) in an upper and lower interval, and when the filter cover shell (7) covers the outer air inlet (5), the pressing strips (51) press the filter screen (8) on the filter cover shell (7).

6. The air cleaner having a linkage dismounting filter screen structure according to claim 1, wherein: The locking device comprises a fixed seat (71) arranged on the inner side of the filter cover shell (7), a elastic locking piece (72) arranged on the lower side of the fixed seat (71), and a clamping strip (73) arranged in the outer air inlet (5), when the filter cover shell (7) covers the outer air inlet (5), the elastic locking piece (72) is arranged on the inner side of the clamping strip (73).

7. The air cleaner having a linkage dismounting filter screen structure according to claim 6, wherein: The elastic locking piece (72) comprises a movable groove (61) arranged on the lower side of the fixed seat (71), a locking block (62) movably arranged in the movable groove (61), a spring (63) arranged between the locking block (62) and the movable groove (61) to keep the locking block (62) in a downward position, when the locking block (62) extends out of the movable groove (61), a locking gap (64) is formed between the locking block (62) and the inner wall of the filter cover shell (7), the clamping strip (73) can be arranged in the locking gap (64), and a first guide inclined surface (65) is arranged on the lower end of the locking block (62).

8. The air cleaner having a linkage dismounting filter screen structure according to claim 7, characterized in that: The unlocking assembly comprises a top plate (81) arranged on the inner cover assembly, when the top plate (81) slides to close the inner air inlet (6) along with the inner cover assembly, the top plate (81) drives the locking block (62) into the movable groove (61), and a second guide inclined surface (82) is arranged on one end of the top plate (81) for contacting and driving the locking block (62).

9. The air cleaner having a linkage dismounting filter screen structure according to claim 8, wherein: The inner cover assembly comprises two arc-shaped sliding plates (91) which are arranged at intervals and slide left and right, the two arc-shaped sliding plates (91) slide together to close the inner air inlet (6), and the two arc-shaped sliding plates (91) are each provided with an unlocking assembly, and the elastic locking members (72) are provided at intervals and correspond to the two unlocking assemblies.

10. The air cleaner having a linkage dismounting filter screen structure according to claim 9, wherein: A pushing block (10) is arranged on the arc-shaped sliding plate (91), and a guide sliding groove (11) for the pushing block (10) to slide is correspondingly arranged on the outer wall of the base shell (1).

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