Air purifier air outlet structure

Abstract

The utility model discloses air purifier air outlet structure, including purifier main part, the top of purifier main part is equipped with the air outlet board, the central part of air outlet board is equipped with the installation port, the peripheral edge of installation port extends downward and forms the passageway, the top of air outlet board is equipped with the protective cover, the central part of protective cover bottom is equipped with the sliding end, the sliding end is inserted and is matched in the passageway and can along the passageway and carries out the axial up and down sliding, so that the protective cover can relatively air outlet board and slide up and down, the purifier main part is located below the protective cover and is equipped with the driving element, the output of driving element is equipped with the lead screw, the lead screw sets up along the sliding direction of sliding end, the central place of sliding end is equipped with the mounting hole, the mounting hole is installed with the nut of cooperation with lead screw, so that the protective cover slides up and down under the drive of lead screw cooperation nut.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to the air outlet structure of an air purifier. Background Technology

[0002] Air purifiers are common household appliances, mainly composed of a casing, air filter, motor, and air duct. They circulate indoor air inside and outside the casing using a motor and fan. Polluted air enters the casing through the inlet and flows through the air filter, which removes or adsorbs various pollutants, thus purifying the air. The purified air exits from the outlet at the top of the casing. To facilitate airflow and prevent foreign objects from entering the air purifier, air purifiers typically have a grille at the outlet. However, while the grille can block most foreign objects, it cannot block smaller objects and dust. This means that even when the air purifier is not working, foreign objects and dust can easily enter, affecting its performance and, in severe cases, shortening its lifespan. Summary of the Invention

[0003] The purpose of this invention is to design an air purifier outlet structure to overcome the shortcomings of the aforementioned technologies.

[0004] This utility model designs an air purifier air outlet structure, including a purifier body. The top of the purifier body has an air outlet plate with a central mounting opening. The periphery of the mounting opening extends downwards to form a channel. A protective cover is provided above the air outlet plate. A sliding end is located at the center of the bottom of the protective cover. The sliding end is inserted into the channel and can slide axially up and down along the channel, allowing the protective cover to slide up and down relative to the air outlet plate. A driving component is located below the protective cover on the purifier body. The output end of the driving component has a lead screw, which is positioned along the sliding direction of the sliding end. A mounting hole is formed at the center of the sliding end, and a nut that engages with the lead screw is installed in the mounting hole, allowing the protective cover to slide up and down under the drive of the lead screw and nut.

[0005] Preferably, the purifier body has a seat at the sliding end, the drive component is mounted on the seat, and the seat has a limiting seat along the periphery of the drive component. The limiting seat is sleeved in the channel and forms an axial rotation limit with the inner wall of the channel.

[0006] Further optimization involves making the cross-section of the channel square, and the limiting seat also correspondingly having a square structure.

[0007] Further optimization involves smoothing the inner wall of the channel and rounding the transition angles between the inner walls. Further optimization involves using a forward and reverse stepper motor as the driving component.

[0008] Preferably, the protective cover includes a cover body and a plate body, the sliding end is disposed at the bottom center of the cover body, the cover body forms a radial cavity with an opening at the top from bottom to top with the sliding end as the center, and the plate body covers the opening of the radial cavity.

[0009] Preferably, the lead screw is a trapezoidal lead screw with a self-locking function.

[0010] As a further optimization, the base is equipped with a limit switch near the drive component.

[0011] Preferably, the outer peripheral wall of the sliding end is provided with a wear-resistant and self-lubricating friction plate.

[0012] Further optimization involves using POM as the material for the friction pad.

[0013] The technical advantage of this invention is that a protective cover is provided above the air outlet plate. The protective cover is connected to the main body of the purifier by means of a screw and nut. The screw rotates in both directions under the drive of a forward and reverse stepper motor, thereby realizing the automatic lifting and lowering movement of the protective cover relative to the air outlet plate. When the main body of the purifier is working, the protective cover automatically and synchronously rises to the top of the air outlet plate to prevent foreign objects from falling from the air outlet plate into the main body of the purifier. When the main body of the purifier is not working, the protective cover automatically and synchronously descends to the top of the air outlet plate and covers the grille of the air outlet plate, so that foreign objects and dust can be prevented from entering the main body of the purifier when it is not working. Attached Figure Description

[0014] Figure 1 It was an explosion of the entire structure. Figure 1 .

[0015] Figure 2 It was an explosion of the entire structure. Figure 2 .

[0016] In the diagram: 1. Air outlet plate; 11. Mounting port; 12. Channel; 2. Protective cover; 21. Cover body; 22. Plate body; 23. Sliding end; 24. Radial cavity; 3. Drive component; 4. Lead screw; 5. Nut; 6. Seat body; 7. Limit seat; 8. Limit switch; 9. Friction plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] This utility model includes a main body of an air purifier. The air outlet of the main body is located at its top, and an air outlet plate 1 is provided at the top air outlet. The air outlet plate 1 has a grid structure and a mounting port 11 in the center. The periphery of the mounting port 11 extends downward to form a channel 12. A protective cover 2 is provided directly above the air outlet plate 1. The shape of the protective cover 2 is adapted to the air outlet plate 1. A sliding end 23 is provided at the center of the bottom of the protective cover 2. The sliding end 23 extends out from the bottom of the protective cover 2. The shape of the sliding end 23 is adapted to the channel 12. The sliding end 23 is inserted and fitted into the channel 12, so that the sliding end 23 can slide axially up and down along the channel 12, thereby allowing the protective cover 2 to slide up and down relative to the air outlet plate 1. In this embodiment, the cross-section of the channel 12 is square, and the cross-section of the sliding end 23 is correspondingly square. That is, the sliding end 23 is a hollow square columnar structure. In this way, when the sliding end 23 slides along the channel 12, it can ensure stability and form a limit on axial rotation, preventing the sliding end 23 from being offset relative to the channel 12 by axial rotation.

[0019] The purifier body has a drive unit 3 located below the protective cover 2. The output end of the drive unit 3 has a lead screw 4, which is positioned along the sliding direction of the sliding end 23. A mounting hole is located in the center of the sliding end 23, and a nut 5 that engages with the lead screw 4 is installed in the mounting hole. The top of the lead screw 4 passes through the channel 12 and the mounting hole to engage with the nut 5. Driven by the drive unit 3, the lead screw 4 rotates in both directions, causing the nut 5 to move up and down along the lead screw 4. The nut 5 also moves the protective cover 2 along with the lead screw 4. In other words, the protective cover 2 moves along with the lead screw 4 and the nut 5. Driven by the drive, the protective cover 2 slides up and down, thus enabling the protective cover 2 to automatically rise and fall along the air outlet plate 1. The drive is connected to the control system inside the purifier body. When the purifier body is turned on, the protective cover 2 automatically rises under the drive of the drive 3, allowing the air outlet plate 1 to vent air normally. When the purifier body is turned off, the protective cover 2 automatically falls under the drive of the drive 3. The protective cover 2 moves to directly above the air outlet plate 1 and covers the air outlet grille of the air outlet plate 1, thereby preventing foreign objects and dust from falling into the purifier body through the air outlet grille.

[0020] Furthermore, the purifier body has a seat 6 at the sliding end 23, the drive component 3 is installed on the seat 6, and the seat 6 has a limiting seat 7 along the periphery of the drive component 3. The cross-section of the channel 12 is square, and the limiting seat 7 is also square in structure. That is, the channel 12 is square in shape, and the limiting seat 7 is also square in shape. The limiting seat 7 is fitted inside the channel 12 and forms an axial rotation limit with the inner wall of the channel 12, so that the air outlet plate 1 can be stably installed on the purifier body.

[0021] Furthermore, the inner wall of channel 12 is smoothed, and the transition angles between the inner walls are rounded to minimize friction and facilitate the axial lifting and lowering movement of the sliding end 23 along the inner wall of channel 12. Furthermore, the driving component 3 is a forward and reverse stepper motor, which has high precision and reliable operation to ensure the normal operation of the lead screw 4 and the nut 5. The driving component 3 drives the lead screw 4 to rotate forward and reverse, thereby realizing the reciprocating movement of the nut 5 up and down, thereby realizing the reciprocating movement of the protective cover 2 relative to the air outlet plate 1 up and down. The forward and reverse stepper motor is a conventional technology, and the specific model will not be described here.

[0022] Furthermore, the protective cover 2 includes a cover body 21 and a plate body 22. The sliding end 23 is located at the bottom center of the cover body 21. The cover body 21 forms a radial cavity 24 with an opening at the top from bottom to top, centered on the sliding end 23. The plate body 22 covers the opening of the radial cavity 24. The radial cavity 24 can accommodate the top of the lead screw 4. When the protective cover 2 is lowered, the top of the lead screw 4 can extend into the radial cavity 24. The top surface of the air outlet plate 1 can be set as a radial recess. In this way, when the protective cover 2 is lowered, its bottom fits against the top surface of the air outlet plate 1 to form a fit, completely blocking the air outlet grille. This completely prevents foreign objects and dust from entering when the main body of the purifier is not working, and also makes the appearance more beautiful.

[0023] Furthermore, the lead screw 4 is a trapezoidal lead screw 4 with a self-locking function. Typically, its thread helix angle is less than about 5 degrees to form a reliable self-locking property. The purpose of using a self-locking lead screw 4 is that when the main body of the purifier is working, that is, when the protective cover 2 is in the rising state, if a foreign object falls onto the protective cover 2, especially a foreign object with a certain weight, the protective cover 2 will tilt, causing the nut 5 and the lead screw 4 to tilt relative to each other. In this way, the nut 5 and the lead screw 4 form a self-locking mechanism, so that the protective cover 2 will not be moved down by the pressure of the heavy object.

[0024] Furthermore, the outer peripheral wall of the sliding end 23 is provided with a wear-resistant and self-lubricating friction plate 9. Its self-lubricating properties not only make the sliding end 23 slide more smoothly along the channel 12, but also reduce friction noise. The material of the friction plate 9 can be POM, also known as polyacetal or acetal resin, which has the characteristics of low coefficient of friction, excellent wear resistance and self-lubrication.

[0025] Furthermore, the base 6 is equipped with a limit switch 8 near the drive component 3. The limit switch 8 is connected to the drive component 3. When the protective cover 2 moves down to the friction plate 9 on the sliding end 23 and touches the limit switch 8 on the base 6, the limit switch 8 is opened and closed. The limit switch 8 is used to control the extreme position of the downward movement of the protective cover 2 to prevent the protective cover 2 from moving down to collide with the base 6 or the drive component 3. Ultimately, this makes the drive component 3 control the screw 4 to rotate more accurately. The limit switch 8 is a conventional technology, and the specific model is not described here.

[0026] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. An air purifier's air outlet structure, characterized in that, The purifier includes a main body, with an air outlet plate (1) on the top of the main body. An installation port (11) is provided in the center of the air outlet plate (1). The periphery of the installation port (11) extends downward to form a channel (12). A protective cover (2) is provided above the air outlet plate (1). A sliding end (23) is provided in the center of the bottom of the protective cover (2). The sliding end (23) is inserted into the channel (12) and can slide axially up and down along the channel (12), so that the protective cover (2) can slide up and down relative to the air outlet plate (1). A drive component (3) is provided below the protective cover (2) of the main body. A lead screw (4) is provided at the output end of the drive component (3). The lead screw (4) is set along the sliding direction of the sliding end (23). An installation hole is provided in the center of the sliding end (23). A nut (5) that cooperates with the lead screw (4) is installed in the installation hole, so that the protective cover (2) slides up and down under the drive of the lead screw (4) and the nut (5).

2. The air purifier outlet structure according to claim 1, characterized in that, The main body of the purifier has a seat (6) at the sliding end (23), the driving member (3) is installed on the seat (6), and the seat (6) has a limiting seat (7) along the periphery of the driving member (3). The limiting seat (7) is sleeved in the channel (12) and forms an axial rotation limit with the inner wall of the channel (12).

3. The air purifier outlet structure according to claim 2, characterized in that, The cross-section of the channel (12) is square, and the limiting seat (7) is also square in structure.

4. The air purifier outlet structure according to claim 3, characterized in that, The inner wall of the channel (12) is smooth, and the transition angle between the inner walls is rounded.

5. The air purifier outlet structure according to claim 2, characterized in that, The driving component (3) is a forward and reverse stepper motor.

6. The air purifier outlet structure according to claim 1, characterized in that, The protective cover (2) includes a cover body (21) and a plate body (22). The sliding end (23) is located at the bottom center of the cover body (21). The cover body (21) forms a radial cavity (24) with the sliding end (23) as the center, which is open from bottom to top. The plate body (22) covers the opening of the radial cavity (24).

7. The air purifier outlet structure according to claim 1, characterized in that, The lead screw (4) is a trapezoidal lead screw (4) with a self-locking function.

8. The air purifier outlet structure according to claim 2, characterized in that, The seat (6) has a limit switch (8) near the drive (3).

9. The air purifier outlet structure according to claim 1, characterized in that, The outer peripheral wall of the sliding end (23) is provided with a wear-resistant and self-lubricating friction plate (9).

10. The air purifier outlet structure according to claim 9, characterized in that, The friction plate (9) is made of POM.

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