Heating ventilation air conditioner filtering device with self-cleaning function

Abstract

The utility model discloses a heating ventilation air conditioner filtering device with a self-cleaning function, and aims to provide the heating ventilation air conditioner filtering device with the self-cleaning function, which is good in cleaning effect and ventilation effect and low in cost. The fan comprises a shell and a filter screen, an installation cavity is formed in the shell, the filter screen is arranged on the shell and communicated with the installation cavity, a driving mechanism and a plurality of fan blades are arranged in the installation cavity, the driving end of the driving mechanism is connected with a transmission shaft, the fan blades are arranged on the transmission shaft, and the fan blades are arranged on the transmission shaft. The transmission shaft is in transmission with a cleaning mechanism, the cleaning mechanism abuts against the filter screen, and the cleaning mechanism reciprocates in the radial direction of the transmission shaft to clean the filter screen when the transmission shaft rotates. The utility model is applied to the technical field of heating ventilation air conditioning devices.

Description

Technical Field

[0001] This utility model relates to the technical field of heating, ventilation and air conditioning (HVAC) devices, and in particular to an HVAC filter device with a self-cleaning function. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) refers to the technical systems used in buildings to regulate indoor environmental comfort. It encompasses heating, ventilation, and air conditioning, aiming to provide people with a healthy and comfortable indoor air environment. In existing HVAC systems, the dust covers of the outdoor units are prone to becoming clogged with dust after prolonged use, leading to reduced airflow and affecting the normal operation and energy efficiency of the air conditioning system. Traditional solutions typically rely on manual cleaning of the dust covers periodically, which is not only time-consuming and labor-intensive but also difficult to maintain a consistent cleaning frequency, easily resulting in the dust filters remaining clogged for extended periods, thus affecting the overall performance and lifespan of the air conditioning system. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a self-cleaning HVAC filter device with good cleaning effect, good ventilation effect and reduced cost.

[0004] The technical solution adopted by this utility model is as follows: This utility model includes a shell and a filter screen. The shell is provided with an installation cavity. The filter screen is disposed on the shell and communicates with the installation cavity. The installation cavity is provided with a drive mechanism and a plurality of fan blades. The drive end of the drive mechanism is connected to a transmission shaft. The plurality of fan blades are disposed on the transmission shaft. The transmission shaft drives a cleaning mechanism. The cleaning mechanism abuts against the filter screen. When the transmission shaft rotates, the cleaning mechanism reciprocates along the radial direction of the transmission shaft to clean the filter screen.

[0005] Furthermore, the cleaning mechanism is equipped with a vibration mechanism, which abuts against the filter screen and generates vibration when the cleaning mechanism reciprocates.

[0006] Furthermore, the cleaning mechanism includes a fixed base and a movable base. The fixed base is fixedly connected to the mounting cavity. A half-tooth gear is connected to the transmission shaft. The movable base is provided with a plurality of first teeth and a plurality of second teeth. The plurality of first teeth are engaged at the upper end of the half-tooth gear, and the plurality of second teeth are engaged at the lower end of the half-tooth gear. A brush plate is provided on the movable base, and the brush plate abuts against the filter screen.

[0007] Furthermore, the mounting base has multiple ventilation holes, all of which are located between the filter screen and the fan blades.

[0008] Furthermore, the fixed base has a guide groove, in which a guide rod is slidably fitted, and the guide rod is fixedly connected to the movable base.

[0009] Furthermore, the vibration mechanism includes a mounting base located on the movable base. A slider is slidably fitted in the mounting base. One side of the slider is connected to one end of a push rod. The fixed base has an undulating surface. The other end of the push rod passes through the mounting base and abuts against the undulating surface. The other side of the slider is connected to one end of a follower rod. The other end of the follower rod passes through the mounting base and is connected to an impact head. The impact head abuts against the filter screen. A spring is sleeved on the follower rod, and the spring is located between the slider and the inner wall of the mounting base.

[0010] Furthermore, the impact head is an elastic impact head.

[0011] Furthermore, the end of the push rod abuts against the undulating surface via wear-resistant balls.

[0012] Furthermore, a mounting bracket is provided in the mounting cavity, and the drive mechanism is mounted on the mounting bracket.

[0013] Furthermore, a dust collection box is detachably connected to the mounting cavity, and the dust collection box is located below the filter screen.

[0014] The beneficial effects of this utility model are:

[0015] In contrast to the shortcomings of existing technologies, this invention utilizes a drive mechanism to rotate a transmission shaft and multiple fan blades, enabling the outdoor unit of the HVAC system to operate normally. The transmission shaft connects to a cleaning mechanism, allowing the cleaning mechanism to reciprocate radially along the rotating shaft, thus cleaning the filter. Therefore, this invention leverages the existing drive mechanism within the HVAC system to drive the cleaning mechanism, eliminating the need for an additional power source. Compared to traditional methods that require an additional power source for self-cleaning, this invention significantly reduces manufacturing and maintenance costs, offering greater practicality. It achieves filter self-cleaning, ensuring the filter remains unobstructed and maintaining stable ventilation, resulting in superior cleaning, ventilation, and cost reduction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the internal structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the cleaning mechanism and vibration mechanism of this utility model;

[0020] Figure 4 yes Figure 3 A magnified view of part A;

[0021] Figure 5 This is a schematic diagram of the planar structure of the vibration mechanism of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Outer shell; 2. Filter screen; 3. Mounting cavity; 5. Drive mechanism; 6. Fan blade; 7. Drive shaft; 8. Cleaning mechanism; 9. Vibration mechanism; 10. Fixed base; 11. Moving base; 12. Half gear; 13. First tooth; 15. Second tooth; 16. Brush plate; 17. Ventilation hole; 18. Guide groove; 19. Guide rod; 20. Mounting base; 21. Slider; 22. Push rod; 23. Undulated surface; 25. Follower rod; 26. Impact head; 27. Spring; 28. Wear-resistant ball bearing; 29. ​​Mounting bracket; 30. Dust collection box.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 1 to 5 As shown, in this embodiment, the present invention includes a housing 1 and a filter screen 2. The housing 1 has a mounting cavity 3. The filter screen 2 is disposed on the housing 1 and communicates with the mounting cavity 3. The mounting cavity 3 contains a drive mechanism 5 and multiple fan blades 6. The drive end of the drive mechanism 5 is connected to a transmission shaft 7. The multiple fan blades 6 are disposed on the transmission shaft 7. The transmission shaft 7 drives a cleaning mechanism 8. The cleaning mechanism 8 abuts against the filter screen 2. When the transmission shaft 7 rotates, the cleaning mechanism 8 reciprocates along the radial direction of the transmission shaft 7 to clean the filter screen 2. The drive mechanism 5 is a drive motor.

[0029] In contrast to the shortcomings of existing technologies, this invention utilizes the drive mechanism 5 to drive the transmission shaft 7 and multiple fan blades 6 to rotate, enabling the outdoor unit of the HVAC system to operate normally. The transmission shaft 7 is connected to the cleaning mechanism 8, allowing the cleaning mechanism 8 to reciprocate along the radial direction of the transmission shaft 7 as it rotates, thus cleaning the filter 2 by moving it left and right. Therefore, this invention utilizes the existing drive mechanism 5 within the HVAC system to drive the cleaning mechanism 8, achieving self-cleaning without the need for an additional power source. Compared to the traditional method of requiring an additional power source for self-cleaning, this invention significantly reduces manufacturing and maintenance costs, offering greater practicality. It enables self-cleaning of the filter 2, ensuring its unobstructed flow and maintaining stable ventilation. This invention offers advantages such as excellent cleaning and ventilation effects, as well as cost reduction.

[0030] In some embodiments, the cleaning mechanism 8 is provided with a vibration mechanism 9, which abuts against the filter screen 2. The vibration mechanism 9 vibrates when the cleaning mechanism 8 reciprocates. Specifically, the vibration mechanism 9 can vibrate when the cleaning mechanism 8 reciprocates to slightly impact the filter screen 2, causing the filter screen 2 to vibrate and allowing the dust attached to the filter screen 2 to fall off more effectively, further improving the self-cleaning effect. Moreover, this invention can use only the drive mechanism 5 as a power source to drive the cleaning mechanism 8 and the vibration mechanism 9 to operate synchronously for self-cleaning of the filter screen 2, without the need for an additional power source.

[0031] In some embodiments, the cleaning mechanism 8 includes a fixed base 10 and a movable base 11. The fixed base 10 is fixedly connected to the mounting cavity 3. A half-tooth gear 12 is connected to the drive shaft 7. The movable base 11 is provided with a plurality of first teeth 13 and a plurality of second teeth 15. The plurality of first teeth 13 are engaged with the upper end of the half-tooth gear 12, and the plurality of second teeth 15 are engaged with the lower end of the half-tooth gear 12. A brush plate 16 is provided on the movable base 11, and the brush plate 16 abuts against the filter screen 2. The fixed base 10 is a U-shaped fixed base, and the number of brush plates 16 is two. Specifically, when the drive mechanism 5 drives the transmission shaft 7 to rotate, it can drive the half gear 12 to rotate together. When the teeth of the half gear 12 rotate to the upper end, they mesh with multiple first teeth 13 and drive the transmission, causing the moving seat 11 to move horizontally to one side. Furthermore, when the teeth of the half gear 12 rotate to the lower end, they mesh with multiple second teeth 15 and drive the transmission, causing the moving seat 11 to move horizontally to the other side. This process is repeated to realize that the brush plate 16 moves back and forth along the radial direction of the transmission shaft 7, thereby continuously cleaning the filter screen 2 and preventing dust from clogging the filter screen 2.

[0032] In some embodiments, the fixed base 10 has multiple ventilation holes 17, all located between the filter screen 2 and the fan blades 6. The fixed base 10 also has a guide groove 18, in which a guide rod 19 is slidably fitted, and the guide rod 19 is fixedly connected to the movable base 11. Specifically, the multiple ventilation holes 17 are designed to prevent the fixed base 10 from affecting the ventilation effect. When the movable base 11 moves, the guide rod 19 can slide along the guide groove 18 to guide the movable base 11. There are two guide grooves 18 and two guide rods 19.

[0033] In some embodiments, the vibration mechanism 9 includes a mounting base 20 located on the movable base 11. A slider 21 is slidably fitted in the mounting base 20. One side of the slider 21 is connected to one end of a push rod 22. A undulating surface 23 is provided on the fixed base 10. The other end of the push rod 22 passes through the mounting base 20 and abuts against the undulating surface 23. The other side of the slider 21 is connected to one end of a follower rod 25. The other end of the follower rod 25 passes through the mounting base 20 and is connected to an impact head 26. The impact head 26 abuts against the filter screen 2. A spring 27 is sleeved on the follower rod 25, and the spring 27 is located between the slider 21 and the inner wall of the mounting base 20. The fixed base 10 has an action plate, and the undulating surface 23 is formed on the action plate. There are two impact heads 26, located at the upper and lower ends of the movable base 11, respectively. Specifically, when the movable seat 11 moves back and forth, it can drive the mounting seat 20 and the push rod 22 to move back and forth together. During the movement, the push rod 22, in combination with the action of the undulating surface 23 and the spring 27, will cause the slider 21 to drive the follower rod 25 to move back and forth rapidly. This will cause the impact head 26 to continuously hit the filter screen 2, so that the dust attached to the filter screen 2 can be more effectively removed, ensuring that the filter screen 2 remains unobstructed.

[0034] In some embodiments, the impact head 26 is an elastic impact head; the end of the push rod 22 abuts against the undulating surface 23 via wear-resistant balls 28. The elastic impact head is made of rubber. Specifically, by making the impact head 26 an elastic impact head, the impact head 26 has a certain buffering effect, preventing damage to the filter screen 2; secondly, the wear-resistant balls 28 can prevent the push rod 22 from directly rubbing against the undulating surface 23, improving the service life of the vibration mechanism 9.

[0035] In some embodiments, a mounting bracket 29 is provided in the mounting cavity 3, and the driving mechanism 5 is mounted on the mounting bracket 29. Specifically, the mounting bracket 29 is fixedly connected between the upper and lower ends of the inner wall of the mounting cavity 3.

[0036] In some embodiments, a dust collection box 30 is detachably connected to the mounting cavity 3, and the dust collection box 30 is located below the filter screen 2. Specifically, by detachably connecting the dust collection box 30, the dust collection box 30 can collect dust that falls from the filter screen 2, and the dust collection box 30 can be periodically removed for emptying.

[0037] The usage process of this utility model is as follows:

[0038] In use, the drive mechanism 5 drives the transmission shaft 7 to rotate, which in turn drives multiple fan blades 6 to rotate, enabling the outdoor unit of the HVAC system to operate normally. Simultaneously, the rotation of the transmission shaft 7 drives the half-gear 12 to rotate. When the half-gear 12 rotates, the moving seat 11, under the action of multiple first teeth 13 and multiple second teeth 15 and the half-gear 12, continuously moves left and right, causing the brush plate 16 to clean the filter screen 2. Simultaneously, the movement of the moving seat 11 drives the mounting seat 20 to move, which in turn drives the push rod 22 to move. During the movement of the push rod 22, under the action of the undulating surface 23 and in conjunction with the spring 27, the slider 21 drives the follower rod 25 to continuously and rapidly move back and forth, causing the impact head 26 to continuously strike the filter screen 2, allowing the dust adhering to the filter screen 2 to fall off more effectively, ensuring the filter screen 2 remains unobstructed. The fallen dust falls into the dust collection box 30 for collection.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A self-cleaning HVAC filter device, characterized in that: It includes a housing (1) and a filter screen (2). The housing (1) is provided with an installation cavity (3). The filter screen (2) is disposed on the housing (1) and communicates with the installation cavity (3). The installation cavity (3) is provided with a drive mechanism (5) and a plurality of fan blades (6). The drive end of the drive mechanism (5) is connected to a transmission shaft (7). The plurality of fan blades (6) are disposed on the transmission shaft (7). The transmission shaft (7) drives a cleaning mechanism (8). The cleaning mechanism (8) abuts against the filter screen (2). When the transmission shaft (7) rotates, the cleaning mechanism (8) reciprocates along the radial direction of the transmission shaft (7) to clean the filter screen (2).

2. The filter device with self-cleaning function for heating, ventilation and air conditioning according to claim 1, characterized in that: The cleaning mechanism (8) is provided with a vibration mechanism (9), which abuts against the filter screen (2) and generates vibration when the cleaning mechanism (8) moves back and forth.

3. The filter device with self-cleaning function for heating, ventilation and air conditioning according to claim 1, characterized in that: The cleaning mechanism (8) includes a fixed seat (10) and a movable seat (11). The fixed seat (10) is fixedly connected in the mounting cavity (3). A half-tooth gear (12) is connected to the transmission shaft (7). The movable seat (11) is provided with a plurality of first teeth (13) and a plurality of second teeth (15). The plurality of first teeth (13) are engaged at the upper end of the half-tooth gear (12), and the plurality of second teeth (15) are engaged at the lower end of the half-tooth gear (12). A brush plate (16) is provided on the movable seat (11), and the brush plate (16) abuts against the filter screen (2).

4. The filter device with self-cleaning function for heating, ventilation and air conditioning according to claim 3, characterized in that: The mounting base (10) has multiple ventilation holes (17), which are located between the filter screen (2) and the fan blades (6).

5. The self-cleaning filter device for heating, ventilation, and air conditioning according to claim 4, wherein: The fixed seat (10) has a guide groove (18), and a guide rod (19) is slidably fitted in the guide groove (18). The guide rod (19) is fixedly connected to the movable seat (11).

6. The filter device with self-cleaning function for heating, ventilation and air conditioning according to claim 2, characterized in that: The vibration mechanism (9) includes a mounting base (20) located on the movable base (11). A slider (21) is slidably fitted in the mounting base (20). One side of the slider (21) is connected to one end of a push rod (22). An undulating surface (23) is provided on the fixed base (10). The other end of the push rod (22) passes through the mounting base (20) and abuts against the undulating surface (23). The other side of the slider (21) is connected to one end of a follower rod (25). The other end of the follower rod (25) passes through the mounting base (20) and is connected to an impact head (26). The impact head (26) abuts against the filter screen (2). A spring (27) is sleeved on the follower rod (25). The spring (27) is located between the slider (21) and the inner wall of the mounting base (20).

7. The self-cleaning filter device of claim 6, wherein the filter device further comprises a filter cleaning mechanism. The impact head (26) is an elastic impact head.

8. A self-cleaning HVAC filter device according to claim 6, characterized in that: The end of the push rod (22) abuts against the undulating surface (23) via wear-resistant balls (28).

9. The self-cleaning filter device for heating, ventilation, and air conditioning according to claim 1, wherein: The mounting cavity (3) is provided with a mounting bracket (29), and the driving mechanism (5) is mounted on the mounting bracket (29).

10. The self-cleaning filter device for heating, ventilation, and air conditioning according to any one of claims 1 to 9, characterized in that: A dust collection box (30) is detachably connected to the mounting cavity (3), and the dust collection box (30) is located below the filter screen (2).

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