Portable air filtering and purifying device

Abstract

The utility model discloses a portable air filtering and purifying device. Comprising a purification main machine, a breathing mask and a wearing assembly used for being worn on the body of a user, the purification main machine is detachably installed on the wearing assembly, a main machine circuit board, an air blower and a battery pack are arranged in the purification main machine, the air blower and the battery pack are electrically connected with the main machine circuit board, and the purification main machine is provided with a partition cavity which is closed through a cover plate. An air inlet hole is formed in the side face of the purification main machine and communicated with the top end of the partition cavity, a filter body is placed in the partition cavity in a filling mode, and an air inlet pipe opening of the air blower is communicated with the bottom of the partition cavity. The air blower and the filter body are arranged side by side, and air enters from the upper end of the filter body and is discharged from the lower end of the filter body, so that the effectiveness of air filtration is ensured, the overall thickness is effectively ensured, and the portable air purifier is convenient to carry; and meanwhile, the separation cavity is used for storing the filter body, so that the isolation and protection effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of purification device technology, and in particular to a portable air filtration and purification device. Background Technology

[0002] As we all know, in industrial production and manufacturing, the processing of some special materials, such as during welding, generates a large amount of dust or smoke and other substances that pollute the air, requiring protective equipment, namely air filtration and purification devices.

[0003] Currently, air filtration and purification devices, such as the wearable anti-smog device disclosed in patent number CN201520509342.6, focus on generating negative ions, while the filter element is only made relatively thin. This is because conventional filter elements are stacked at the air inlet of the blower; if they were too thick, the overall design would be bulkier and less portable. For industrial applications, even thicker filters and larger blowers are required. If the same installation method is used, the device's thickness will increase further, making it less portable and inconvenient. Furthermore, replacing the filter requires completely opening the device's cover, exposing all internal components. This is labor-intensive and inconvenient, and exposing components that don't require regular replacement is unsightly and prone to damage during replacement if misoperation occurs. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a portable air filtration and purification device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A portable air filtration and purification device includes a purification unit, a breathing mask, and a wearing component for wearing on a user. The purification unit is detachably mounted on the wearing component. The purification unit has a built-in main circuit board and a blower and battery pack electrically connected to the main circuit board. The purification unit has a cavity that is closed by a cover plate. An air inlet is provided on the side of the purification unit and communicates with the top of the cavity. A filter is filled in the cavity. The air inlet of the blower communicates with the bottom of the cavity. The air outlet of the blower is connected to the breathing mask through a duct.

[0007] Preferably, the wearing component includes a receiving plate and a strap connected to the receiving plate. The strap is a back strap or a waist belt. An "L"-shaped insert is provided on the lower half of the end face of the receiving plate, and a "C"-shaped buckle is provided on the upper half of the end face of the receiving plate. The portion of the receiving plate at least located at the buckle is configured as a flexible, bendable body, allowing the buckle to be folded. An upward-facing insertion port is provided at the bottom of the back of the purification unit, and a baffle plate that can engage with the buckle is provided at the top of the back of the purification unit. The baffle plate is suspended in the middle, and the diameter of the opening of the buckle is smaller than the width of the baffle plate.

[0008] Preferably, the battery pack contains a built-in battery cell and a battery circuit board electrically connected to the battery cell. The outer end face of the battery pack is provided with conductive contacts, which are electrically connected to the battery circuit board. One end of the battery pack is provided with a spring-loaded buckle, and the other end is provided with a sliding groove and a movable cavity located below the sliding groove. The battery pack is provided with a locking hole communicating with the movable cavity. A push button that can move back and forth along the sliding groove is placed in the sliding groove. A pin is provided at the lower end of the push button, and the pin is placed inside the movable cavity. A protrusion is provided on the sliding groove, and the top of the protrusion has an arc surface. A limiting groove is provided at the bottom of the push button, and both ends of the limiting groove are respectively provided with stop grooves that can form a locking mechanism with the protrusion. The purification unit is provided with a battery compartment that can accommodate the battery pack. A conductive pin electrically connected to the unit circuit board is provided inside the battery compartment. An inverted "L"-shaped locking rod that can be inserted into the locking hole is provided at the port of the battery compartment. A locking slot is provided at the port of the battery compartment corresponding to the spring-loaded buckle.

[0009] Preferably, the battery cell is a rechargeable battery, and the battery circuit board is provided with a charging port, the port of which is located on the outside of the battery pack.

[0010] Preferably, the charging port is plugged with a soft rubber stopper.

[0011] Preferably, the cover plate is hinged to the opening of the cavity, and the outer edge of the cover plate overlaps the periphery of the cavity by compression.

[0012] Preferably, the main circuit board is provided with a button and an indicator light, the button's press cap is placed outside the purification main unit, and the purification main unit is provided with a light guide strip at the indicator light location.

[0013] Preferably, the filter body has at least an activated carbon filter layer and pre-filter cotton built in.

[0014] By adopting the above solution, this utility model arranges the blower and the filter body side by side, allowing air to enter from the top of the filter body and exit from the bottom. This ensures both the effectiveness of air filtration and the overall thickness, making it easy to carry. At the same time, by using the cavity as a storage space for the filter body, it is possible to quickly replace the filter body simply by opening the cover, while preventing other internal components from being exposed, thus providing a protective barrier. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the cover plate after it is opened according to an embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the structure of an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the back of the purification host according to an embodiment of the present invention.

[0019] Figure 5 This is a cross-sectional view of the battery pack according to an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention.

[0021] Figure 7 This is an exploded view of the battery pack with respect to the push button in an embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the battery pack from another direction according to an embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of a belt as an embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] like Figures 1 to 9 As shown, this embodiment provides a portable air filtration and purification device, including a purification host 1, a breathing mask 2, and a wearing component 3 for wearing on a user. The purification host 1 is detachably installed on the wearing component 3. The purification host 1 has a host circuit board 11 and a blower 12 and a battery pack 5 electrically connected to the host circuit board 11. The purification host 1 is provided with a cavity 14, which is closed by a cover plate 15. An air inlet 16 is provided on the side of the purification host 1, which is connected to the top of the cavity 14. A filter 4 is filled in the cavity 14. The air inlet of the blower 12 is connected to the bottom of the cavity 14, and the air outlet of the blower 12 is connected to the breathing mask 2 through a conduit 21.

[0028] In this embodiment, the blower 12 and the filter body 4 are arranged side by side, and air enters from the top of the filter body 4 and exits from the bottom of the filter body 4. This ensures the effectiveness of air filtration and also effectively guarantees the overall thickness, making it easy to carry. At the same time, the filter body 4 is stored in the cavity 14, so that when it is replaced, the filter body 4 can be quickly replaced simply by opening the cover 15, while preventing other internal components from being exposed, thus playing a role in isolation and protection.

[0029] The specific purification principle of this embodiment is as follows: When air purification is performed, the battery pack 5 provides power, and the main circuit board 11 controls the blower 12 to start working. Outside air will enter through the air inlet and be sent into the cavity, located on the upper surface of the filter body 4. Under the suction action of the blower 12, and with the filter body 4 filling the entire cavity, the air entering the cavity will be filtered through the filter body 4. The filtered air will then enter the blower 12 and be pushed into the breathing mask 2 by the blower 12.

[0030] Meanwhile, when the filter element 4 needs to be replaced, simply open the cover plate 15 to expose the entire cavity 14, and then pry the filter element 4 out by hand to complete the removal. When replacing the filter element 4, simply insert the new filter element 4 into the cavity 14, and then close the cover plate 15, so that the cover plate 15 presses the filter element 4 downwards, allowing the filter element 4 to fill the entire cavity 14, preventing unfiltered air from flowing through the cavity wall of the cavity 14. As for locking the cover plate 15, it can be the more conventional press-type buckle, or it can directly rely on the outer edge of the cover plate 15 to press and fit against the periphery of the cavity 14. Of course, the method of closing the cover plate 15 only needs to satisfy that the cover plate 15 can close and press the filter element 4.

[0031] Furthermore, for ease of wear, this embodiment selects a detachable connection method with the purification host 1. Therefore, the wearing component 3 in this embodiment includes a receiving plate 31 and a strap 32 connected to the receiving plate 31. Depending on the wearing position, the strap 32 can be divided into a back strap or a waist belt. For the detachable structure design, specifically, an "L"-shaped insert 33 is provided on the lower half of the end face of the receiving plate 31, and a "C"-shaped latch 34 is provided on the upper half of the end face of the receiving plate 31. The portion of the receiving plate 31 at least at the latch 34 is set as a flexible body that can be bent, so that the latch 34 can be folded. The bottom of the back of the purification host 1 is provided with an upward-facing insertion port 13, and the top of the back of the purification host 1 is provided with a baffle 17 that can engage with the latch 34. The baffle 17 is suspended in the middle, and the diameter of the port of the latch 34 is smaller than the width of the baffle 17. When assembly is required, first insert the insert 33 into the socket 13, then fold the latch 34 outwards, first inserting the lower half of the latch 34 into the lower end of the baffle 17, then restore the latch 34, pushing the upper half of the latch 34 to the upper end of the baffle 17. This completes the assembly. When disassembly is required, similarly, first fold the latch 34 outwards, first disengaging the upper half of the latch 34 from the upper end of the baffle 17, and then pry the lower half of the latch 34 apart, thus separating the purification unit 1 and the wearable component 3. It should be noted that the latch 34 and the receiving plate 31 at the latch 34 can be made of PP material, which has both bendability and a certain degree of rigidity.

[0032] Furthermore, to facilitate continuous use of the product, the battery pack 5 is designed to be replaceable. Specifically, in this embodiment, the battery pack 5 contains a battery cell 51 and a battery circuit board 52 electrically connected to the battery cell 51. The outer end face of the battery pack 5 is provided with conductive contacts 53, which are electrically connected to the battery circuit board 52. One end of the battery pack 5 is provided with a spring-loaded buckle 54, and the other end of the battery pack 5 is provided with a sliding groove 55 and a movable cavity 56 located below the sliding groove 55. The battery pack 5 is provided with a locking hole 57 communicating with the movable cavity 56. A push button 58 that can move back and forth along the sliding groove 55 is placed in the sliding groove 55. A pin 59 is provided at the lower end of the push button 58, and the pin 59 is placed inside the movable cavity 56. The sliding groove 55 is provided with... A protrusion 501 is provided, the top of which is an arc surface. A limiting groove 504 is provided at the bottom of the push button 58. The two ends of the limiting groove 504 are respectively provided with stop grooves 505 that can form a lock with the protrusion 501, so that when the push button 58 is pushed to one end, it remains locked. Thus, after the push button 58 is pushed to one end, the pin 59 can be horizontally inserted into the lock hole 57. The purification host 1 is provided with a battery compartment 18 that can accommodate the battery pack 5. The battery compartment 18 is provided with a conductive pin 19 that is electrically connected to the host circuit board 11. The port of the battery compartment 18 is provided with an inverted "L"-shaped locking rod 101 that can be inserted into the lock hole 57. The port of the battery compartment 18 is provided with a locking slot 102 at the corresponding position of the spring buckle 54. With this setup, when the battery pack 5 needs to be installed, push button 58 should be moved backward to prevent pin 59 from reaching the lock hole 57, allowing locking rod 101 to be inserted into the lock hole 57. Then, the battery pack 5 is inserted into the battery compartment 18, and snap 54 forms a top lock with locking slot 102 (similar to the locking structure of a battery cover). Push button 58 to the other end, after pin 59 is inserted into the lock hole 57, it forms a limit with locking rod 101, meaning the top of locking rod 101 overlaps the end face of pin 59. Then, the conductive contact 53 on the battery pack 5 and the conductive pin 19 make contact, establishing a circuit. When the battery pack 5 needs to be removed, simply push button 58 back and release the lock between snap 54 and locking slot 102 for quick removal.

[0033] Furthermore, in this embodiment, the battery cell 51 is a rechargeable battery, and the battery circuit board 52 is provided with a charging port 502. The port of the charging port 502 is located outside the battery pack 5. The battery circuit board 52 is provided with a charge and discharge management circuit and a battery protection circuit. These are all conventional circuits in battery electronic circuits, so their working principles will not be described in detail in this embodiment.

[0034] Furthermore, to protect the charging port 502, a soft rubber plug 503 is inserted into the charging port 502 in this embodiment.

[0035] Furthermore, to prevent the cover plate 15 from being lost, the cover plate 15 in this embodiment is hinged to the opening of the cavity 14, so that the cover plate 15 does not need to be removed when the cavity 14 is exposed.

[0036] Furthermore, to facilitate user control of the filtration process, the main circuit board 11 in this embodiment is equipped with a button 103 and an indicator light 104. The button 103 has its press cap located on the outside of the purification unit 1, and a light guide strip 105 is provided on the purification unit 1 at the indicator light 104. The user can turn the filtration process on or off using the button 103, and depending on the internal circuit program, it can also be used to adjust the speed. The light guide strip 105 can be used to display the specific working status, such as whether the filtration process is on, the remaining battery power, or the filtration rate.

[0037] Furthermore, since the filter body 4 is mainly used in the welding field, the filter body 4 in this embodiment has at least an activated carbon filter layer and a pre-filter cotton inside.

[0038] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A portable air filtration and purification device, characterized in that: The device includes a purification unit, a breathing mask, and a wearable assembly for wearing by a user. The purification unit is detachably mounted on the wearable assembly. The purification unit has a built-in circuit board and a blower and battery pack electrically connected to the circuit board. The purification unit has a compartment that is closed by a cover plate. The side of the purification unit has an air inlet that communicates with the top of the compartment. A filter is placed inside the compartment. The air inlet of the blower communicates with the bottom of the compartment. The air outlet of the blower is connected to the breathing mask through a duct.

2. The portable air filtration and purification device as described in claim 1, characterized in that: The wearing component includes a receiving plate and a strap connected to the receiving plate. The strap is a back strap or a waist belt. An "L"-shaped insert is provided on the lower half of the end face of the receiving plate, and a "C"-shaped buckle is provided on the upper half of the end face of the receiving plate. The portion of the receiving plate at least at the buckle is configured as a flexible, bendable body, allowing the buckle to be folded. An upward-facing insertion port is provided at the bottom of the back of the purification unit, and a baffle plate that can engage with the buckle plate is provided at the top of the back of the purification unit. The baffle plate is suspended in the middle, and the diameter of the opening of the buckle plate is smaller than the width of the baffle plate.

3. The portable air filtration and purification device as described in claim 1, characterized in that: The battery pack contains a built-in battery cell and a battery circuit board electrically connected to the battery cell. The outer end face of the battery pack has conductive contacts that are electrically connected to the battery circuit board. One end of the battery pack has a spring-loaded buckle, and the other end has a sliding groove and a movable cavity located below the sliding groove. The battery pack has a locking hole communicating with the movable cavity. A push button that can move back and forth along the sliding groove is placed in the sliding groove. A pin is located at the lower end of the push button and is placed inside the movable cavity. A protrusion with a rounded top is provided on the sliding groove. A limiting groove is provided at the bottom of the push button, and two ends of the limiting groove have locking grooves that can lock with the protrusion. The purification unit has a battery compartment that accommodates the battery pack. A conductive pin electrically connected to the unit's circuit board is provided inside the battery compartment. An inverted "L"-shaped locking rod that can be inserted into the locking hole is provided at the port of the battery compartment. A locking slot is provided at the port of the battery compartment corresponding to the spring-loaded buckle.

4. The portable air filtration and purification device as described in claim 3, characterized in that: The battery cell is a rechargeable battery, and a charging port is provided on the battery circuit board. The port of the charging port is located on the outside of the battery pack.

5. A portable air filtration and purification device as described in claim 4, characterized in that: The charging port is plugged with a soft rubber stopper.

6. The portable air filtration and purification device as described in claim 1, characterized in that: The cover plate is hinged to the opening of the cavity, and the outer edge of the cover plate is pressed and overlapped with the periphery of the cavity.

7. A portable air filtration and purification device as described in claim 1, characterized in that: The main circuit board is equipped with buttons and indicator lights. The button caps are located on the outside of the purification unit, and a light guide strip is provided on the purification unit at the indicator light location.

8. A portable air filtration and purification device as described in claim 1, characterized in that: The filter body has at least an activated carbon filter layer and a pre-filter cotton inside.

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