Dust collection device

Abstract

The utility model discloses a dust collection device which comprises a shell, a motor, a filter, a piston body and a driving mechanism, the shell is provided with an air inlet, an air outlet, a filter cavity, a compression cavity and a motor cavity, and the filter cavity, the compression cavity and the motor cavity are communicated in sequence; the motor is located in the motor cavity; the filter is positioned in the filter cavity; the piston body is located in the compression cavity and used for forming reverse impact airflow which reversely passes through the filter to clean the filter. An included angle is formed between the arrangement direction of the compression cavity and the filter cavity and the arrangement direction of the compression cavity and the motor cavity; the driving mechanism is located on the side, away from the filter cavity, of the compression cavity. The piston body can be driven by the driving mechanism to move in the first linear direction. The dust collection device is reasonable and compact in internal structure layout, sensitive and reliable in state switching action, and capable of ensuring a good working effect and simplifying the design of an internal channel of the shell.

Description

Technical Field

[0001] This application relates to the field of electric vacuum cleaner technology, and in particular to a vacuum cleaner device. Background Technology

[0002] In existing technologies, some vacuum cleaners have a self-cleaning function, designed to reduce the frequency of manual filter cleaning, ensure continuous and efficient operation, and extend the lifespan of the vacuum cleaner. For example, when the vacuum cleaner is in vacuuming mode, the airflow on the right side of the piston body, driven by the suction of the motor, pushes the piston body to the left. When the vacuum cleaner is in self-cleaning mode, the air supply channel is opened, connecting the left chamber of the piston body to the outside atmosphere. At this time, a pressure difference exists between the left and right sides of the piston body, which, through the airflow on the left side of the piston body, pushes the piston body to the right. This compresses the gas, forming an airflow that impacts the filter in the opposite direction, achieving self-cleaning.

[0003] It is evident that the piston of this dust collection device is driven by airflow. However, actual production experience shows that airflow-driven operation is not entirely reliable. When the filter is working, if it becomes clogged, the airflow entering from the right side of the piston will weaken, potentially shortening the piston's leftward movement and affecting the dust collection effect. Furthermore, the amount of compressible gas during self-cleaning is significantly reduced, leading to a weakened self-cleaning effect. In addition, during self-cleaning, the piston needs to be propelled by external atmospheric air into the left side chamber to drive its movement, resulting in a relatively complex airflow structure.

[0004] Therefore, how to improve the reliability of self-cleaning structures is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a vacuuming device to improve the reliability of a self-cleaning structure.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A vacuum cleaner device, comprising:

[0008] The housing has an air inlet and an air outlet, as well as a filter chamber, a compression chamber and a motor chamber connected in sequence;

[0009] An electric motor, installed in the motor cavity, is used to generate negative pressure to form an airflow channel between the air inlet and the air outlet;

[0010] A filter, installed in the filter chamber and located in the airflow channel, is used to filter contaminants in the airflow;

[0011] A piston body, installed in the compression chamber, is used to generate a reverse impinging airflow that passes in the opposite direction through the filter to clean it;

[0012] The compression chamber and the filter chamber are generally arranged in a first straight line direction, and the compression chamber and the motor chamber are generally arranged in a second straight line direction, with the first straight line and the second straight line forming an angle;

[0013] The vacuuming device further includes a drive mechanism located on the side of the compression chamber opposite to the filter chamber, and the piston body can be driven by the drive mechanism to move along the first linear direction.

[0014] Optionally, in the above-mentioned vacuuming device, the air outlet of the motor and the air outlet of the housing form an exhaust channel, and the drive mechanism is located outside the exhaust channel and is isolated from the exhaust channel.

[0015] Optionally, in the above-mentioned vacuuming device, a filter outlet is provided on the side of the compression chamber near the motor chamber;

[0016] The piston body includes:

[0017] A push plate is used to compress the gas in the compression chamber to form the reverse impact airflow.

[0018] A baffle, connected to the push plate, is used to block at least a portion of the filter outlet when the push plate moves along the first linear direction.

[0019] Optionally, in the above-mentioned vacuuming device, the baffle is located at one end of the push plate and forms an L-shaped integrated structure with the push plate.

[0020] Optionally, in the above-mentioned vacuuming device, the driving mechanism includes a power source and a moving part driven by the power source, and the power source and the piston body are connected by transmission through the moving part;

[0021] The top plate of the compression chamber is provided with a through hole for the moving part to pass through.

[0022] Optionally, in the above-mentioned vacuuming device, the power source is a solenoid valve.

[0023] Optionally, the above-mentioned vacuuming device further includes:

[0024] A valve seat, fixedly connected to the top plate, is used to install the solenoid valve;

[0025] And / or, a heat sink is located near the side of the solenoid valve;

[0026] And / or, a positioning element, disposed on the housing, located on top of and inserted into the solenoid valve.

[0027] Optionally, in the above-described vacuum cleaner, the housing includes:

[0028] The lower cover of the motor head includes a box area with the opening facing downwards and a cover area for installing the motor;

[0029] The tray, located below the lower cover of the machine head, includes an air inlet area and an air outlet area;

[0030] The air inlet area is located below the housing area and forms the compression chamber therewith; the air supply area is located below the cover area and forms a filtration channel therewith; the filtration channel is connected to the compression chamber and to the air inlet of the motor.

[0031] Optionally, the above-mentioned vacuuming device further includes a spray plate, which is located inside the compression chamber and between the piston body and the filter;

[0032] The spray plate is provided with multiple spray holes, one end of which opens towards the piston body, and the other end of which opens into the filter chamber.

[0033] Optionally, in the above-described vacuuming device, the first linear direction is substantially perpendicular to the second linear direction.

[0034] As can be seen from the above technical solution, in the vacuum cleaner provided by this application, since the compression chamber and filter chamber are arranged roughly in the first straight line direction, and the compression chamber and motor chamber are arranged roughly in the second straight line direction, compared with arranging all chambers in the same straight line direction, this method of arranging the chambers in a staggered manner can make the internal structure of the device more compact and the layout more reasonable. This helps to avoid the problem of a large footprint and inconvenient operation caused by a large overall width of the vacuum cleaner, and also helps to avoid the problem of a high center of gravity and easy tipping caused by a large overall height of the vacuum cleaner. Moreover, in this vacuum cleaner, since the piston body is directly driven and controlled by the drive mechanism, compared with the scheme of controlling the movement of the piston body by airflow, it is not only more sensitive in action and more reliable in self-cleaning structure, but also ensures sufficient airflow in both vacuuming and self-cleaning states, ensuring good vacuuming and self-cleaning effects, and simplifies the internal channel design of the housing. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1This is a front sectional view of a vacuuming device in vacuuming mode, provided in an embodiment of this application.

[0037] Figure 2 This is an isometric sectional view of a vacuuming device (excluding a dustbin) in vacuuming mode, as provided in an embodiment of this application.

[0038] Figure 3 This is an isometric sectional view of a dust collection device (excluding a dustbin) in a self-cleaning state, as provided in an embodiment of this application.

[0039] Figure 4 This is a schematic diagram of the connection structure between a piston body and a solenoid valve provided in an embodiment of this application.

[0040] Figure 5 This is a schematic diagram illustrating the positional relationship between a valve seat and a portion of an exhaust duct, provided as an embodiment of this application.

[0041] Figure 6 This is a schematic diagram of the installation structure of a solenoid valve, valve seat, and exhaust channel on the lower cover of the machine head, provided for an embodiment of this application.

[0042] Figure 7 This is a schematic diagram of the structure of a machine head lower cover provided in an embodiment of this application.

[0043] Figure 8 This is a schematic diagram of the structure of a tray provided in an embodiment of this application.

[0044] in:

[0045] 1-Filter, 2-Spray plate, 3-Piston body, 4-Power source, 5-Filter channel

[0046] 6-Motor, 7-Exhaust duct, 8-Tray, 9-Lower cover of the machine head

[0047] 21-Injection hole, 31-Moving part, 41-Valve seat, 42-Heat dissipation component, 43-Positioning component.

[0048] 71 - First exhaust duct, 72 - Second exhaust duct

[0049] 81-Air inlet area, 82-Air outlet area, 91-Box area, 92-Cover area

[0050] 100 - Compression chamber, 101 - Filter outlet, 102 - Through hole,

[0051] 301-Push plate, 302-Baffle, 311-Wear-resistant layer. Detailed Implementation

[0052] This application provides a vacuuming device with a reasonable and compact internal structure, sensitive and reliable state switching action, which can ensure good working effect and simplify the internal channel design of the housing.

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] Please see Figures 1 to 3 The vacuum cleaner provided in this application includes a housing, a motor 6, a filter 1, and a piston 3. The housing has an air inlet a and an air outlet b, and a filter chamber, a compression chamber 100, and a motor chamber connected sequentially. The motor 6 is installed in the motor chamber to generate negative pressure, forming an airflow channel between the air inlet a and the air outlet b. The filter 1 is installed in the filter chamber and located in the airflow channel, used to filter dirt in the airflow. The piston 3 is installed in the compression chamber 100 to form a reverse impact airflow that passes through the filter 1 to clean it. The compression chamber 100 and the filter chamber are generally arranged in a first straight line direction, and the compression chamber 100 and the motor chamber are generally arranged in a second straight line direction. The first and second straight lines form an angle, for example, the first straight line direction is generally perpendicular to the second straight line direction or the angle is acute. The vacuum cleaner also includes a drive mechanism located on the side of the compression chamber 100 away from the filter chamber, and the piston 3 can be driven by the drive mechanism to move along the first straight line direction.

[0055] In this vacuum cleaner, the compression chamber 100 and the filter chamber are arranged roughly in the first straight line direction, and the compression chamber 100 and the motor chamber are arranged roughly in the second straight line direction. Compared to arranging all chambers in the same straight line direction, this staggered arrangement of chambers makes the internal structure of the device more compact and the layout more reasonable. This helps to avoid the problems of a large footprint and inconvenient operation caused by a large overall width of the vacuum cleaner, and also helps to avoid the problems of a high center of gravity and easy tipping caused by a large overall height of the vacuum cleaner. Moreover, in this vacuum cleaner, since the piston body 3 is directly driven and controlled by the drive mechanism, compared with the scheme of controlling the movement of the piston body by airflow, it is not only more sensitive and reliable in action, but also ensures sufficient airflow in both vacuuming and self-cleaning states, ensuring good vacuuming and self-cleaning effects. Furthermore, it simplifies the internal channel design of the housing.

[0056] Please see Figure 1In specific implementation, the motor cavity and compression cavity 100 can be arranged generally in a horizontal direction (i.e., the second straight line direction mentioned above is horizontal), with the compression cavity 100 located above the filter cavity (i.e., the piston body 3 is located above the filter 1, and the first straight line direction mentioned above is vertical). The air inlet and outlet directions of the filter 1 are vertical. This arrangement allows the airflow to pass evenly through the filter 1, preventing severe local dust accumulation. Moreover, during normal operation and self-cleaning of the vacuum cleaner, at least some of the accumulated dust can be removed from the filter 1 under its own gravity, thereby extending the cleaning cycle. Furthermore, since the compression cavity 100 and the motor cavity are arranged generally in a horizontal direction, it helps to lower the height of the motor 6, thereby lowering the center of gravity of the vacuum cleaner and avoiding problems such as easy tipping and inconvenience in operation caused by an excessively high center of gravity. However, it is not limited to this. In other embodiments, the motor cavity may be located diagonally below or above the compression cavity 100 and the filter cavity, or the compression cavity 100 and the filter cavity may be arranged along a diagonal line that is inclined relative to the vertical direction. That is, the first straight line direction and the second straight line direction mentioned above can be specifically designed and adjusted according to actual needs. This application does not make specific limitations in this regard.

[0057] Please see Figure 2 and Figure 3 A filter outlet 101 is provided on the side of the compression chamber 100 near the motor chamber, and the side where the filter outlet 101 is located is parallel to the moving direction of the piston body 3. Please refer to [link / reference]. Figure 4 The piston body 3 includes a push plate 301 and a baffle 302. The baffle 302 is located at one end of the push plate 301 and forms an L-shaped integral structure with the push plate 301. The push plate 301 compresses the gas in the compression chamber 100 to form a reverse impact airflow capable of cleaning the filter 1. The baffle 302 is fixedly connected to the push plate 301. As the push plate 301 moves along a first linear direction to approach the filter 1, the baffle 302 can block at least a portion of the filter outlet 101. At this time, the direction of movement of the piston body 3 is the same as the direction of movement of the baffle 302, which is consistent with the direction of the reverse impact airflow formed by the compression of the gas by the push plate 301. For example... Figure 2 and Figure 3 As shown, in some embodiments, the compression chamber 100 is located above the filter chamber. When the push plate 301 moves vertically from top to bottom and gradually approaches the filter 1, the area of ​​the baffle 302 blocking the filter outlet 101 gradually increases.

[0058] In practical implementation, the space of the compression chamber 100 is limited. If a chamber for accommodating the drive mechanism is to be added inside the housing or even within the compression chamber 100, the size of the machine head needs to be increased, which does not conform to the original intention of the machine miniaturization design. Therefore, in order to control the movement of the piston body 3 with the drive mechanism without increasing the size of the machine head, in some embodiments, the drive mechanism for controlling the reciprocating movement of the piston body 3 is located near the outside of the exhaust duct 7.

[0059] Specifically, please see Figure 5 and Figure 6 The exhaust channel 7 is formed between the air outlet of the motor 6 and the air outlet b of the housing. The drive mechanism is located near the outside of the exhaust channel 7 and is isolated from it, thereby providing a dry and water-proof working environment for the power source 4 in the drive mechanism and preventing water vapor or humid air discharged from the motor 6 from interfering with the normal operation of the solenoid valve. The exhaust channel 7 includes a first exhaust channel 71 near the motor air outlet and a second exhaust channel 72 near the air outlet b of the housing. The first exhaust channel 71 is arranged around the periphery of the motor body, and the second exhaust channel 72 is located on the outside of the top plate of the compression chamber 100. One end is connected to the first exhaust channel 71, and the other end forms the air outlet b of the housing or is connected to the air outlet b of the housing. Preferably, the drive mechanism for controlling the reciprocating movement of the piston 3 is arranged adjacent to the second exhaust duct 72. Both the second exhaust duct 72 and the power source 4 in the drive mechanism are located above the top plate of the compression chamber 100. The top plate of the compression chamber 100 is provided with a through hole 102. One end of the moving part 31 in the drive mechanism is connected to the power source 4, and the other end passes through the through hole 102 and extends into the compression chamber 100 to connect with the piston 3. It can be seen that the dust collection device provided in this application utilizes the empty space outside the second exhaust duct 72 to install the drive mechanism, thereby achieving the purpose of making reasonable use of the internal space of the housing, eliminating the need to add installation space for the drive mechanism, and eliminating the need to increase the size of the head.

[0060] Please see Figure 4 , Figure 5 and Figure 6In some embodiments, the drive mechanism for controlling the reciprocating movement of the piston body 3 includes a power source 4 and a moving component 31 driven by the power source 4. The power source 4 and the piston body 3 are connected by transmission through the moving component 31. Correspondingly, the top plate of the compression chamber 100 is provided with a through hole 102 for the moving component 31 to pass through. Further, the outer surface of the moving component 31 near the piston body 3 is provided with a smooth wear-resistant layer 311 to avoid severe wear and jamming when the moving component 31 reciprocates in the through hole 102. In specific implementations, an electromagnetic valve can be used as the power source 4, or other power devices such as a linear motor can be used; the moving component 31 can be a rod-shaped connector, a plate-shaped connector, a transmission assembly composed of gears and two racks, or any other component that can achieve a transmission connection between the power source and the piston body 3, as long as it can accurately and reliably control the reciprocating movement of the piston body 3.

[0061] Please see Figure 4 , Figure 5 and Figure 6 In some embodiments, a valve seat 41 and / or a heat sink 42 are further provided on the outer side of the top plate of the compression chamber 100. The valve seat 41 is fixedly connected to the top plate of the compression chamber 100 and is used to install a solenoid valve; the heat sink 42 is located near the solenoid valve and is generally in contact with the side of the solenoid valve to improve the heat dissipation efficiency of the solenoid valve. Further, please refer to... Figure 2 and Figure 3 A positioning element 43 is provided inside the housing near the top of the solenoid valve. This positioning element 43 is located on the top of the solenoid valve and is inserted into the top structure of the solenoid valve. For example, in some embodiments, a positioning post protrudes from the top of the solenoid valve; correspondingly, the positioning element 43 is a sleeve structure, with one end fixedly connected to the housing and the other end able to be inserted into the positioning post on the top of the solenoid valve. Alternatively, in other embodiments, the positioning element 43 can be set as a solid column structure, with one end fixedly connected to the housing and the other end inserted into the sleeve structure on the top of the solenoid valve.

[0062] Please see Figures 1 to 3 In some embodiments, a spray plate 2 is provided in the region of the compression chamber 100 near the filter 1, and the spray plate 2 is located between the piston body 3 and the filter 1. The top surface of the spray plate 2 is perpendicular to the extension and retraction direction of the piston body 3, and has multiple spray holes 21 distributed thereon. One end of each spray hole 21 faces the piston body 3, and the other end communicates with the filter chamber. When the piston body 3 moves towards the filter 1, it can compress the gas in the compression chamber 100, forming a reverse impact airflow. This airflow passes through the spray holes 21 and impacts the filter 1, blowing the accumulated dust on the filter 1 into the dust bin, thereby enabling the filter 1 to achieve self-cleaning.

[0063] Please see Figure 1 and Figure 2 ,as well as Figure 7 and Figure 8 In some embodiments, the housing of the vacuum cleaner includes a lower cover 9 for the vacuum head and a tray 8. The lower cover 9 includes a box area 91 with an opening facing downwards and a cover area 92 for mounting the motor 6. The tray 8 is located below the lower cover 9 and includes an air inlet area 81 and an air outlet area 82. The air inlet area 81 is located below the box area 91 and encloses it to form a compression chamber 100. The air outlet area 82 is located below the cover area 92 and encloses it to form a filter channel 5. The filter channel 5 communicates with the air inlet of the motor 6 and communicates with the compression chamber 100 through a filter outlet 101.

[0064] During use, the vacuum cleaner can switch between vacuuming mode (i.e., suction mode) and self-cleaning mode as needed:

[0065] Please see Figure 1 and Figure 2 In the vacuuming state, the piston body 3 is away from the spray plate 2 and the filter 1. The baffle 302 in the piston body 3 does not block the filter outlet 101, that is, the filter outlet 101 is in a fully open state. Under the suction action of the motor 6, the airflow path in the vacuuming device is: housing air inlet a → dust bin internal cavity → filter 1 → filter outlet 101 → filter channel 5 → motor air inlet → motor air outlet → first exhaust channel 71 → second exhaust channel 72 → air outlet b; (in this state, the airflow passes through the filter 1 in the forward direction).

[0066] Please see Figure 3 When the filter 1 needs to be self-cleaned, the vacuum cleaner switches to the self-cleaning state. At this time, the power source 4 is activated to drive the piston body 3 to move closer to the filter 1 through the moving part 31, thereby compressing the gas in the compression chamber 100 and forming a directional impact airflow. After the airflow passes through the spray hole 21 on the spray plate 2, it impacts the filter 1, thereby blowing off the dust and other debris on the filter 1 and achieving self-cleaning (in this state, the airflow passes through the filter 1 in the opposite direction). At the same time, the piston body 3 blocks at least part of the filter outlet 101 to prevent the compressed airflow from escaping into the filter channel 5 and reducing the self-cleaning effect.

[0067] It should be noted that in self-cleaning mode, if the baffle 302 completely blocks the filter outlet 101, the motor 6 may be unable to draw in gas (being in a completely blocked state). Therefore, the baffle 302 can leave a small gap to allow a small amount of airflow through the motor 6, preventing complete blockage. Furthermore, it should be noted that the power source 4 has a very fast response time, and the self-cleaning process is very short. Therefore, the baffle 302 only blocks the filter outlet 101 for a brief moment and will not affect the normal operation of the motor 6. In addition, the vacuuming device mentioned in this application can be a canister vacuum cleaner or other types of vacuum cleaners; this application does not specifically limit the type of vacuuming device.

[0068] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuuming device, comprising: The housing has an air inlet and an air outlet, as well as a filter chamber, a compression chamber and a motor chamber connected in sequence; An electric motor, installed in the motor cavity, is used to generate negative pressure to form an airflow channel between the air inlet and the air outlet; A filter, installed in the filter chamber and located in the airflow channel, is used to filter contaminants in the airflow; A piston body, installed in the compression chamber, is used to generate a reverse impinging airflow that passes in the opposite direction through the filter to clean it; The feature is that the compression chamber and the filter chamber are generally arranged in a first straight line direction, and the compression chamber and the motor chamber are generally arranged in a second straight line direction, wherein the first straight line and the second straight line have an angle between them; The vacuuming device further includes a drive mechanism located on the side of the compression chamber opposite to the filter chamber, and the piston body can be driven by the drive mechanism to move along the first linear direction.

2. The vacuuming device according to claim 1, characterized in that, The air outlet of the motor and the air outlet of the housing form an exhaust channel. The drive mechanism is located outside the exhaust channel and is isolated from the exhaust channel.

3. The vacuuming device according to claim 1, characterized in that, A filter outlet is provided on the side of the compression chamber near the motor chamber; The piston body includes: A push plate is used to compress the gas in the compression chamber to form the reverse impact airflow. A baffle, connected to the push plate, is used to block at least a portion of the filter outlet when the push plate moves along the first linear direction.

4. The vacuuming device according to claim 3, characterized in that, The baffle is located at one end of the push plate and forms an L-shaped integrated structure with the push plate.

5. The vacuuming device according to claim 1, characterized in that, The drive mechanism includes a power source and a moving part driven by the power source, and the power source and the piston body are connected by the moving part. The top plate of the compression chamber is provided with a through hole for the moving part to pass through.

6. The vacuuming device according to claim 5, characterized in that, The power source is a solenoid valve.

7. The vacuuming device according to claim 6, characterized in that, Also includes: A valve seat, fixedly connected to the top plate, is used to install the solenoid valve; And / or, a heat sink is located near the side of the solenoid valve; And / or, a positioning element, disposed on the housing, located on top of and inserted into the solenoid valve.

8. The vacuum cleaner according to claim 1, characterized in that, The housing includes: The lower cover of the motor head includes a box area with the opening facing downwards and a cover area for installing the motor; The tray, located below the lower cover of the machine head, includes an air inlet area and an air outlet area; The air inlet area is located below the housing area and forms the compression chamber therewith; the air supply area is located below the cover area and forms a filtration channel therewith; the filtration channel is connected to the compression chamber and to the air inlet of the motor.

9. The vacuuming device according to claim 1, characterized in that, It also includes a spray plate, which is located within the compression chamber and between the piston body and the filter; The spray plate is provided with multiple spray holes, one end of which opens towards the piston body, and the other end of which opens into the filter chamber.

10. The vacuuming device according to any one of claims 1 to 9, characterized in that, The direction of the first straight line is approximately perpendicular to the direction of the second straight line.

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