Dust collector with increased exhaust path

Abstract

The dust collector comprises a dust storage barrel and a machine head, the machine head is arranged above the dust storage barrel, an air outlet is formed in one side of the machine head, and an air inlet is formed in the other side of the dust storage barrel; an annular air duct is formed in the spiral shell, one end of the annular air duct is communicated with the air outlet, and the other end of the annular air duct is communicated with the exhaust suction inlet; and a drainage plate is arranged at one end of the inner side of the air inlet, is inclined downwards and is in an inward concave shape. The exhaust path is increased, the airflow speed is reduced, noise is reduced, and the cleaning efficiency is improved. Cyclone separation of dust and air is achieved, efficiency of the dust collector is improved, pressure of the filter is reduced, a dust storage bag is not needed, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a vacuum cleaner with an increased exhaust path. Background Technology

[0002] In traditional vacuum cleaner designs, the exhaust system located between the fan and the exhaust port is typically simple in construction, with limited airflow paths. This design not only results in excessively fast exhaust speeds, increasing noise, but also, due to the short airflow path, insufficient space is provided for effective separation of dust and air, thus reducing cleaning efficiency.

[0003] Chinese patent document CN217310094U, published on August 30, 2022, discloses a noise reduction device for a vacuum cleaner's air outlet. The device includes a vacuum cleaner body and a sound-insulating plate. A vacuum cleaner head is fixedly installed on the left side of the vacuum cleaner body, and an air outlet is located on the right side of the inner wall of the vacuum cleaner body. Mounting plates are fixedly installed on the right side of the inner wall of the vacuum cleaner body, positioned above and below the air outlet. The sound-insulating plate is located inside the vacuum cleaner body and between the two mounting plates. This vacuum cleaner's exhaust system is relatively simple, with a short airflow path and excessively fast exhaust speed, requiring additional noise reduction devices to lower the noise, thus increasing costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vacuum cleaner with an increased exhaust path. By setting up a spiral shell, the exhaust path is increased, the airflow speed is reduced, noise is decreased, and cleaning efficiency is improved.

[0005] A further objective of this invention is to achieve cyclone separation of dust and air by setting a diversion plate, thereby improving the efficiency of the vacuum cleaner, reducing filter pressure, eliminating the need for a dust collection bag, and reducing costs.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a vacuum cleaner with an increased exhaust path, comprising a dust collection bin and a head, the head being positioned above the dust collection bin, with an air outlet on one side of the head and an air inlet on the other side of the dust collection bin; the air outlet is connected to a spiral shell, within which an annular air duct is formed, one end of which connects to the air outlet and the other end to the exhaust intake; a guide plate is provided on one end of the inner side of the air inlet, the guide plate being angled downwards and concave in shape. This increases the exhaust path, reduces airflow velocity, decreases noise, and improves cleaning efficiency. It achieves cyclone separation of dust and air, improving the vacuum cleaner's efficiency, reducing filter pressure, eliminating the need for a dust collection bag, and reducing costs.

[0007] Preferably, the deflector plate is positioned diagonally above the air inlet, with one end occupying half of the inlet's end face circle and the other end being arc-shaped. This arrangement allows the dust entering the air inlet to undergo preliminary airflow guidance and dust-air separation more precisely along the direction guided by the deflector plate. The end occupying half of the inlet's end face circle can effectively intercept a larger area of ​​dust, while the arc-shaped other end allows for a smoother airflow transition, reducing turbulence and improving the initial efficiency of dust-air separation. This allows dust to begin separating more quickly at the deflector plate and deposit at the bottom of the dust collection bin, preventing a large amount of dust from directly impacting the filter, thereby extending the filter's lifespan and improving the overall vacuum cleaner's suction stability.

[0008] Preferably, the bolt housing surrounds the motor housing, which is cylindrical and houses the motor. The motor housing has rectangular holes on its sides and an opening at the top for heat dissipation. This spiral housing design not only makes efficient use of space but also allows the heat generated by the increased exhaust path and reduced airflow velocity to be dissipated by the motor housing, thus playing a role in heat exchange. The rectangular holes on the sides and the opening at the top of the motor housing create excellent ventilation and heat dissipation channels, effectively reducing the motor temperature during prolonged operation, ensuring stable motor performance, reducing the risk of motor failure due to overheating, extending the motor's lifespan, and ensuring the vacuum cleaner can operate continuously and efficiently.

[0009] Preferably, an exhaust suction plate is located below the motor, with an exhaust suction inlet at its center, which is recessed downwards. This design of the exhaust suction plate and its recessed central exhaust inlet helps guide airflow through the spiral casing more smoothly into the exhaust channel. The recessed shape creates a negative pressure concentration effect, enhancing the suction force on the airflow within the spiral casing, making the exhaust process smoother and more efficient, further reducing noise caused by poor airflow, and also helping to maintain the air pressure balance inside the vacuum cleaner, ensuring stable operation of the entire vacuuming and exhaust system and improving the consistency of cleaning results.

[0010] Preferably, a filter is located below the motor, inside the dust collection bin. By placing the filter in the dust collection bin below the motor, the air, after initial dust-air separation, passes upwards through the motor, preventing dust contamination that could affect its performance and lifespan. The filter inside the dust collection bin effectively intercepts any remaining fine dust, preventing it from being released into the environment and purifying the exhaust air. This ensures the vacuum cleaner cleans the environment without causing secondary pollution, meeting environmental protection requirements. It also facilitates filter maintenance and replacement; simply open the dust collection bin.

[0011] Preferably, the filter is equipped with a float cup located at the bottom of the filter, and the filter and the float cup are located on the central axis of the dust collection bin. The float cup serves to store and collect dust.

[0012] Preferably, the main body has a head housing on top, with a switch on one side of the top of the head housing. The head is secured to the dustbin with clips. The head housing has slots corresponding to the clips to allow for their movement. Several rollers are arranged around the bottom of the dustbin, with protective covers above them. The switch on the top of the head housing is conveniently located, easily accessible, and clearly visible. The clips securing the head and dustbin ensure a tight connection and facilitate installation and disassembly, allowing for easy inspection and maintenance of internal components. The slots on the head housing provide adequate space for the clips, ensuring a compact structure. The rollers at the bottom of the dustbin facilitate movement of the vacuum cleaner on different surfaces, reducing the effort required to push and improving flexibility and convenience. The protective covers above the rollers prevent dust, hair, and other debris from getting tangled, ensuring normal roller rotation, extending roller life, and allowing for smoother, unobstructed movement of the vacuum cleaner.

[0013] Preferably, a support plate is provided on the spiral housing and the motor housing. One side of the support plate abuts against the head housing, and the other side is fixed to the head housing. This plate protects the spiral housing and the motor housing, and provides support to the head housing. The support plate is divided into three sections: the middle section is an arc-shaped plate positioned outside the rectangular hole in the motor housing; the other two sections span the spiral housing and bend downwards; the support plate is perpendicular to the spiral housing and the motor housing, and triangular supports are provided at the bottom of each side. The support plate provides effective protection for the spiral housing and the motor housing, preventing damage when the vacuum cleaner is subjected to external impacts or bumps, and ensuring the safe and stable operation of the internal core components. Its support for the head housing enhances the stability of the entire machine structure, preventing deformation of the head housing due to prolonged use or external forces. The middle arc-shaped plate, positioned outside the rectangular hole in the motor housing, provides localized reinforcement and protection to the motor housing without affecting motor heat dissipation. The two additional sections that span the spiral shell and bend downwards, along with the triangular support design at the bottom of both sides, greatly improve the support plate's resistance to pressure and bending, distribute the force, and enable the entire structure to withstand greater external impacts, further enhancing the overall durability and reliability of the vacuum cleaner.

[0014] The beneficial effects of this invention are as follows: By incorporating a spiral shell and a guide plate, this invention increases the exhaust path, reduces airflow velocity, decreases noise, and improves cleaning efficiency. It achieves cyclone separation of dust and air, improving the efficiency of the vacuum cleaner, reducing filter pressure, and eliminating the need for a dust collection bag, thus reducing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a structural diagram of the present invention with the head shell removed.

[0018] Figure 4 This is a structural diagram of the air inlet and the deflector plate of this utility model.

[0019] Reference numerals: 1: Machine head; 1.1: Motor housing; 1.2: Motor; 1.3: Spiral housing; 1.4: Annular air duct; 1.5: Air outlet; 1.6: Machine head housing; 1.6.1: Switch; 2: Dust collection bin; 2.1: Air inlet; 2.2: Buckle; 2.3: Drain plate; 3: Filter; 3.1: Float cup; 4: Exhaust air intake; 5: Exhaust air intake plate; 6: Support plate; 7: Roller. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural or functional modifications made by those skilled in the art based on these embodiments are all included within the protection scope of the present invention.

[0021] This invention relates to a vacuum cleaner with a rotating air outlet assembly, which mainly consists of two parts: a dust collection bin 2 and a cleaning head 1. The cleaning head 1 is located above the dust collection bin 2, and the two work together to achieve efficient dust collection and cleaning functions. An air outlet 1.5 is provided on one side of the cleaning head 1, while an air inlet 2.1 is provided on the other side of the dust collection bin 2. This layout lays the foundation for airflow circulation inside the vacuum cleaner, allowing air to enter the vacuum cleaner in an orderly manner for dust and air separation before being discharged.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, the air inlet 2.1 serves as the entry point for dust into the vacuum cleaner, and a unique guide plate 2.3 is positioned at one end of its inner side. This guide plate 2.3 is angled downwards and has a concave shape. Furthermore, the guide plate 2.3 is preferably positioned diagonally above the air inlet 2.1, with one end occupying half of the circular end face of the air inlet 2.1. This design effectively intercepts a large area of ​​dust as soon as it enters. When the dust-laden airflow rushes in from the air inlet 2.1, the dust begins to flow along the concave surface of the guide plate 2.3 due to the blocking and guiding effect of the guide plate 2.3. Since one end of the guide plate 2.3 occupies half of the circular end face of the air inlet 2.1, its large contact area allows most of the dust to be captured by the guide plate 2.3 in the initial stage and begin to deposit towards the bottom of the dust collection bin 2 under the combined action of gravity and airflow inertia. The other end of the guide plate 2.3 is curved, a clever design that allows for a smoother airflow transition. After being guided by the guide plate 2.3, the dust-laden gas rotates within the dust collection bin 2. Dust particles are pushed against the wall of the bin 2 by centrifugal force. Under the combined action of the reaction force from the wall and gravity, the dust particles quickly settle and separate from the airflow. During dust-gas separation, airflow stability is crucial. Turbulence will affect the separation effect and subsequent dust collection. The arc-shaped design effectively reduces turbulence, allowing the airflow to continue along a predetermined path, thus improving the initial efficiency of dust-gas separation. In this way, a large amount of dust can quickly begin to separate at the guide plate 2.3 and deposit at the bottom of the dust collection bin 2, avoiding direct impact of large amounts of dust on the filter 3. This is significant for the filter 3, effectively extending its service life because it does not need to frequently handle the impact of large amounts of initial dust, thus maintaining good filtration performance for a longer period. At the same time, because the dust is well separated in the early stage, the overall dust collection stability of the vacuum cleaner is significantly improved. Whether dealing with large areas of dust or fine dust, it can maintain a relatively stable dust collection effect and will not experience fluctuations in suction power due to the influence of dust on filter 3.

[0023] like Figure 2 and Figure 3As shown, the air outlet 1.5 is connected to the spiral housing 1.3, which forms a unique annular air duct 1.4. One end of this annular air duct 1.4 is connected to the air outlet 1.5, and the other end is connected to the exhaust intake 4. The spiral housing 1.3 surrounds the motor housing 1.1, which is cylindrical and houses the motor 1.2. This surrounding layout not only makes more efficient use of space but also generates a series of beneficial heat exchange and structural stability effects. The motor 1.2 generates heat during operation, and the spiral housing 1.3 also generates heat as it increases the exhaust path and reduces the airflow velocity. Since the spiral housing 1.3 surrounds the motor housing 1.1, heat exchange is possible between the two. The motor housing 1.1 has rectangular holes on its sides and an opening at its top, which together form a good ventilation and heat dissipation channel. When the motor 1.2 generates heat during operation, the heat is dissipated through the rectangular holes on the sides and the opening at the top of the motor housing 1.1. Meanwhile, the heat around the spiral housing 1.3 is also dissipated to some extent by the motor housing 1.1, playing a role in auxiliary heat dissipation. Through the synergistic effect of this heat exchange and ventilation channels, the temperature of the motor 1.2 can be effectively reduced during long-term operation. A stable motor 1.2 temperature is one of the key factors ensuring stable motor 1.2 performance. When the motor 1.2 temperature can be effectively controlled, the risk of motor 1.2 failure due to overheating will be greatly reduced, and the service life of the motor 1.2 will be extended. This ensures that the entire vacuum cleaner can work continuously and efficiently, without frequent interruptions to cleaning operations due to motor 1.2 failure, providing users with reliable cleaning assurance.

[0024] like Figure 2As shown, an exhaust suction plate 5 is located below the motor 1.2, with an exhaust suction port 4 at its center, which is recessed downwards. When airflow passing through the spiral housing 1.3 needs to be exhausted, the exhaust suction plate 5 and its recessed central exhaust suction port 4 play a crucial guiding role. The recessed shape has unique aerodynamic characteristics, generating a negative pressure concentration effect. This negative pressure concentration effect acts like a suction enhancer, increasing the suction force on the airflow within the spiral housing 1.3. During exhaust, the strong suction force allows the airflow to enter the exhaust channel more smoothly, reducing resistance and turbulence during the transition. The smooth and efficient exhaust process further reduces noise caused by poor airflow, as noise often occurs when airflow is obstructed or turbulent, a situation effectively avoided here. Simultaneously, good exhaust guidance also helps maintain the internal air pressure balance of the vacuum cleaner. Stable internal air pressure is crucial for the stable operation of the entire vacuuming and exhaust system during vacuuming. An imbalance in air pressure can lead to poor vacuuming performance and dust leakage. The design of the exhaust intake plate 5 ensures stable air pressure, thereby improving the consistency of cleaning effect. Regardless of the cleaning environment and working time, it can maintain a relatively stable dust suction and exhaust effect, providing users with a high-quality cleaning experience.

[0025] like Figure 2As shown, a filter 3 is also installed below the motor 1.2, and the filter 3 is located inside the dust collection bin 2. This layout has several advantages. First, after preliminary dust-air separation, the air, when passing upwards through the motor 1.2, is filtered by the filter 3 because it is located inside the dust collection bin 2 below the motor 1.2, thus preventing the motor 1.2 from being contaminated by dust. As the core power component of the vacuum cleaner, the performance and lifespan of the motor 1.2 are crucial to the operation of the entire device. If the motor 1.2 is contaminated by dust, it may lead to increased operating resistance, poor heat dissipation, or even short circuits, seriously affecting the performance and lifespan of the motor 1.2. The filter 3 inside the dust collection bin 2 can effectively intercept the remaining fine dust, ensuring that the air entering the area of ​​the motor 1.2 is relatively clean. Secondly, the placement of the filter 3 inside the dust collection bin 2 also prevents dust from being emitted into the external environment. During the cleaning process, if the dust sucked in by the vacuum cleaner is discharged into the air without effective filtration, it will cause secondary pollution and negatively impact indoor air quality. This is unacceptable, especially in environments with high air quality requirements, such as homes, offices, and hospitals. The filter 3 in this invention effectively purifies the discharged air, preventing secondary pollution while the vacuum cleaner cleans the environment and meeting environmental protection requirements. Furthermore, this design facilitates the maintenance and replacement of the filter 3. When cleaning or replacing the filter 3 is needed, the user only needs to open the dust collection bin 2, eliminating the need for a complicated disassembly process and greatly improving user convenience and maintenance efficiency. A float cup 3.1 is installed inside the filter 3, located at the bottom of the filter 3, and the filter 3 and float cup 3.1 are located on the central axis of the dust collection bin 2. The float cup 3.1 plays a role in storing and collecting dust during the vacuum cleaner's operation. As the vacuum cleaner continuously sucks in dust, after initial separation and filtration by the filter 3, some fine dust gradually settles in the float cup 3.1.

[0026] like Figure 1As shown, a head housing 1.6 is located on the top of the machine body, and a switch 1.6.1 is located on one side of the top of the head housing 1.6. This switch 1.6.1 is designed with user convenience in mind. Its location on the top side allows users to easily access the switch 1.6.1 while using the vacuum cleaner, without having to bend over or search for it. Whether standing or holding the vacuum cleaner, users can easily control its start and stop. The head 1 is fixed to the dustbin 2 by a clip 2.2. This fixing method features a tight connection and easy installation and disassembly. Clip 2.2 ensures a secure connection between the head 1 and the dustbin 2, preventing loosening or separation during vacuum cleaner operation and guaranteeing the overall stability of the device. When internal components need to be inspected, repaired, or cleaned, the user can easily separate the head 1 from the dustbin 2 by simply releasing clip 2.2 for convenient internal operation. The head housing 1.6 has a slot corresponding to the buckle 2.2, providing reasonable installation space for the buckle 2.2. Several rollers 7 are arranged around the bottom of the dust collection bin 2, preferably four in this embodiment, arranged symmetrically at the center. The rollers 7 greatly improve the flexibility of the vacuum cleaner on different surfaces. When cleaning large areas, the user does not need to lift the vacuum cleaner forcefully; a gentle push is all it takes for the vacuum cleaner to move smoothly on the ground with the help of the rollers 7, reducing the effort required and improving ease of use. Furthermore, a protective cover is provided above the rollers 7, effectively preventing dust, hair, and other debris from getting tangled in them. During daily cleaning, hair, fibers, and other debris often accumulate on the ground. If these debris gets tangled in the rollers 7, it will affect their normal rotation, increase rotational resistance, and may even prevent them from rotating. The protective cover acts as a barrier, preventing debris from contacting the roller 7, ensuring its normal rotation, extending its lifespan, and allowing the vacuum cleaner to move smoothly and efficiently.

[0027] like Figure 3As shown, a support plate 5 is provided on the spiral housing 1.3 and the motor housing 1.1. One side of the support plate 5 abuts against the head housing 1.6, and the other side is fixed to the head 1. Its main function is to protect the spiral housing 1.3 and the motor housing 1.1. During the daily use of the vacuum cleaner, it may be subjected to various external forces such as collisions and bumps, for example, accidental collisions with other objects during transportation, or bumps caused by uneven ground during cleaning. The support plate 5 can effectively prevent the spiral housing 1.3 and the motor housing 1.1 from being damaged in these situations, ensuring the safe and stable operation of the internal core components. At the same time, the support plate 5 also provides support for the head housing 1.6. As an important external structural component of the vacuum cleaner, the head housing 1.6 needs to maintain a stable shape and structural strength. The support of the support plate 5 can enhance the stability of the entire body structure and prevent the head housing 1.6 from deforming due to long-term use or external forces. Specifically, the support plate 5 is divided into three sections, with the middle section being an arc-shaped plate, which is set on the outside of the rectangular hole in the motor housing 1.1. This design provides localized reinforcement and protection for the motor housing 1.1 without affecting the heat dissipation of the motor 1.2. The rectangular opening in the motor housing 1.1 is a crucial heat dissipation channel and cannot be obstructed. The arc-shaped plate design avoids the rectangular opening while providing additional protection around it, preventing direct external force from damaging the motor housing 1.1. Two additional sections span the spiral shell and bend downwards, with the support plate 5 perpendicular to the spiral shell 1.3 and the motor housing 1.1, and triangular supports at the bottom of each side. This structural design significantly improves the compressive and bending resistance of the support plate 5. When the vacuum cleaner is subjected to external impact, the two support plates 5 spanning the spiral shell can distribute the force over a larger area, while the downward bend and triangular supports further enhance the structural strength of the support plate 5, enabling it to withstand greater impacts. In this way, the overall durability and reliability of the vacuum cleaner are further improved, allowing it to operate stably for extended periods in various complex operating environments.

[0028] In addition to the above embodiments, within the scope disclosed in the claims and specification of this utility model, the technical features or technical data of this utility model can be reselected and combined to form new implementation methods. These implementation methods not described in detail in this utility model can be easily implemented by those skilled in the art without creative effort. Therefore, these implementation methods not described in detail should also be regarded as specific embodiments of this utility model and within the protection scope of this utility model.

Claims

1. A dust collector with an exhaust path increasing device, characterized in that, it comprises a dust storage bin and a head, the head is arranged above the dust storage bin, the head is provided with an air outlet on one side, and the dust storage bin is provided with an air inlet on the other side; the air outlet is connected with a spiral shell, the spiral shell forms a ring-shaped air duct, one end of which is communicated with the air outlet, and the other end is communicated with an air suction inlet; the inner side of the air inlet is provided with a flow guide plate, the direction of the flow guide plate is obliquely downward, and the shape of the flow guide plate is concave.

2. A dust collector having an exhaust path according to claim 1, wherein The flow guide plate is arranged obliquely above the air inlet, one end of the flow guide plate occupies half of the end surface circle of the air inlet, and the other end is arc-shaped.

3. The dust collector having an exhaust path according to claim 1, wherein A bolt shell is arranged around a motor shell, the motor shell is cylindrical, and the motor shell is provided with a motor.

4. A dust extractor with an exhaust path according to claim 3, wherein A motor shell is arranged around a motor shell, the motor shell is cylindrical, and the motor shell is provided with a motor.

5. A dust extractor according to claim 3 or 4, wherein, A filter is arranged below the motor, and the filter is arranged in the dust storage bin.

6. A dust extractor with an exhaust path according to claim 5, wherein A float cup is arranged in the filter, the float cup is located at the bottom of the filter, and the filter and the float cup are located on the central axis of the dust storage bin.

7. The dust collector having an exhaust path according to claim 1, wherein A head shell is arranged above the machine body, a switch is arranged on one side of the top end of the head shell, and the head is fixed on the dust storage bin by buckling.

8. The dust collector with an exhaust path according to claim 1, wherein Support plates are arranged on the spiral shell and the motor shell, one side of the support plates abuts against the head shell, and the other side of the support plates is fixed on the head.

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