CN216823213U - Hand-held vacuum cleaner - Google Patents

Abstract

The utility model provides a handheld dust catcher, includes the casing and locates the motor in the casing, and aforementioned casing outside has the stalk portion that supplies to hand, and inside has the wind channel, and the front end in this wind channel forms the side direction air intake, and the rear end forms the gas vent, and aforementioned motor gives the air in the wind channel in order accelerating, its characterized in that the wind channel include one-level centrifugation district, second grade filter screen, tertiary acceleration centrifugation district and handkerchief in proper order, aforementioned motor locates the gas outlet end of handkerchief and is close to the gas vent setting in wind channel. Set up through the graded filtering and reduce the jam risk to the second level filter screen, reduce wind channel total cross section area with, wind speed can improve several times, combines through rotatory centrifugation and parabolic principle, reaches the effect of separation with littleer dust.

Description

handheld vacuum cleaner

technical field

The utility model relates to a vacuum cleaner, in particular to a vacuum cleaner.

Background technique

At present, most vacuum cleaners are divided into two types. One is an older vacuum cleaner with a power cord connection. This type of vacuum cleaner has the advantages of high power, large suction, and unlimited battery life. However, it also has its corresponding shortcomings. Because it has a power cord, it is convenient to use from time to time, and it is limited by the length and flexibility of the power cord. The other is a handheld vacuum cleaner with a battery, which is popular in recent years. It is small in size and has a built-in battery. It does not need to connect wires when using it, which is particularly convenient and flexible. The disadvantage is that due to the weight of the whole machine (excessive weight affects the use experience), the number of batteries is limited, so the battery life will be limited. At the same time, in order to achieve a good suction effect, it is necessary to increase the internal motor power to improve the performance. suction, which in turn aggravates the shortening of battery life.

In summary, in order to obtain better dust collection and battery life, the design requirements of the hand-held vacuum cleaner are higher, especially the air duct design and dust separation structure of the vacuum cleaner. To achieve better vacuuming effect.

At present, when the primary filter of the hand-held vacuum cleaner filters, due to the air duct and structure, there is no separate storage space for dust, and the wind mixed with dust and foreign matter directly impacts the surface of the filter, so that the surface of the filter will increase with dust and accumulate on the filter. The surface of the mesh is blocked. After the blockage, the machine cannot be used normally, the suction force decreases linearly, and the noise increases. The amount of such vacuuming is limited. The dust separation effect is not enough, resulting in the accumulation of more dust on the surface of the filter Hypa, resulting in blockage of the Hypa. This results in the need for frequent cleaning of the machine and more filter Hypa. It can be seen that the existing hand-held vacuum cleaner only separates the dust passing through the filter screen, and only has a simple one-stage separation, and the effect is poor, so that the rear hypa (filter element) is often easily blocked, needs to be cleaned and is easily damaged.

Utility model content

The technical problem to be solved by the present utility model is to provide a hand-held vacuum cleaner which can be filtered by grading to ensure that the air duct will not be blocked for a long time in view of the above-mentioned technical status.

The technical solution adopted by the present invention to solve the above technical problems is as follows: a hand-held vacuum cleaner, comprising a casing and a motor arranged in the casing. The front end forms a side air inlet, and the rear end forms an exhaust port. The aforementioned motor accelerates the air in the air duct. Hypa, the aforementioned motor is located at the air outlet of the Hypa and close to the exhaust port of the air duct.

There is a longitudinally arranged filter cartridge in the casing, and a high-level tangential air inlet and a low-level first-level dust collection port are opened on the side wall of the filter cartridge. The aforesaid first-level dust collection port leads into the first-level dust cup; a separator is axially arranged in the middle of the filter cartridge, and at least one tangential air inlet with a gradually reduced diameter is opened in the middle of the side wall of the separator. A hollow ventilation cylinder is formed in the middle, and a three-stage dust collection chamber is formed at the bottom. The top of the three-stage dust collection chamber has a baffle plate, and a ventilation hole into the ventilation cylinder is formed between the baffle plate and the lower end of the ventilation cylinder. An air inlet channel is formed between the dust inlet of the dust collection chamber and the air outlet end of the third-stage acceleration centrifugal zone, and the air inlet end of the air inlet channel is flared; the outer periphery of the aforementioned tangential air inlet is sleeved with a secondary filter screen; The annular cavity between the inner wall of the filter cartridge and the filter screen forms a first-stage centrifugal zone, and a third-stage accelerated centrifugal zone is formed between the inner wall of the separator and the outer wall of the ventilation cylinder.

The housing is provided with a collection cover which can be opened and closed. The collection cover includes a first receiving part, a second receiving part and a third receiving part. The aforementioned first receiving part is located on one side of the second receiving part, and the aforementioned second receiving part In the shape of an annular shape, the aforesaid third receiving part is located at the center of the second receiving part. When the collection cover is closed, the aforesaid first receiving part forms the bottom of the first-stage dust cup, and the aforesaid second receiving part forms the bottom of the first-stage centrifugal zone. The aforementioned third receiving portion forms the bottom of the three-stage dust collection chamber. After opening the collection cover, the dust particles in the first-stage dust cup, the second-stage filter screen and the third-stage dust collection chamber can be collected at one time, which is convenient for cleaning operations.

Considering the ease of installation and installation, the housing has an inner cavity, the inner cavity is provided with a lining shell, the filter cartridge is formed on the lining shell, and the first-stage dust cup is formed on the lining shell and Located on one side of the filter cartridge, the rear end of the liner shell has a sleeve part for the Hypa to be arranged, and the collection cover can be opened and closed at the bottom of the liner shell. Liner shell, separator, collection cover, secondary screen and Hypa can form an assembled module, which is convenient for assembly, maintenance and cleaning.

Preferably, the baffle has a spherical shape in the middle, which facilitates the collection of dust particles in the third-stage dust collection chamber.

Further, there are at least two tangential air inlets and are arranged around the circumferential direction of the separator.

Compared with the prior art, the advantages of the present utility model are: the first-stage dust separation is centrifugal force separation, the second-stage dust separation is the filter screen filtration separation, the third-stage dust separation is acceleration centrifugation, and the fourth-stage dust separation is hypa filter separation; The air duct is designed so that the wind mixed with dust can pass the shape of the air duct and the centrifugal principle, so that the dust of large volume and weight can be thrown out through the inertial involute direction to achieve the first-level dust removal effect. It separates out the large dust and reduces the risk of clogging the second-stage filter screen, and at the same time, there will be no suction attenuation. In the third-stage filtration, because the large and heavy particles have been removed by the first and second stage filters In order to filter out the smaller dust, the wind speed and centrifugal force must be increased before it can be separated, and then the total cross-sectional area of the air duct is reduced. Under the same wind condition, the wind speed will increase several times. Combined with the parabolic principle, the smaller dust can be separated. After filtering by Dihypa, finally, the clean air is discharged through the exhaust port.

Description of drawings

FIG. 1 is a schematic structural diagram of the embodiment.

Figure 2 is an exploded view of the embodiment.

FIG. 3 is a cross-sectional view of the embodiment.

Figure 4 is an exploded enlarged view of the separator and the secondary filter screen.

FIG. 5 is a partial enlarged perspective sectional view of the separator.

FIG. 6 is a state diagram after the collection cover of the embodiment is opened.

Detailed ways

The present utility model will be further described in detail below with reference to the embodiments of the accompanying drawings.

As shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 6 , the hand-held vacuum cleaner in this embodiment includes a housing 1 , a motor 7 arranged in the housing 1 , a lining housing 2 and a collection cover 5 , and the outer side of the housing 1 has a The handle 13 for hand-held has an air duct inside. The front end of the air duct forms a side air inlet 11, and the rear end forms an exhaust port 12. A dust suction head (not shown in the figure) can be arranged on the side air inlet 11. The motor 7 accelerates the air in the air duct. The air duct includes a first-stage centrifugal zone 26, a second-stage filter screen 4, a third-stage acceleration centrifugal zone 38 and a Hypa 6. The motor 7 is located at the air outlet of the Hypa 6 and is close to the air duct. The exhaust port 12 is provided.

The housing 1 has an inner cavity 15, and the inner cavity 15 is provided with a lining shell 2. The lining shell 2 is formed with a longitudinally arranged filter cartridge 22, a first-stage dust cup 21 and a sleeve portion 23. The first-stage dust cup 21 is located in the filter cylinder. On the side of 22 , the sleeve part 23 is formed at the rear end of the liner shell 2 for the Hypa 6 to be installed, and the collection cover 5 is provided on the bottom of the liner shell 2 so as to be able to be opened and closed. The side wall of the filter cartridge 22 is provided with a high tangential air inlet 24 and a low first-level dust collection port 25. The tangential air inlet 24 is communicated with the side air inlet 11 of the air duct, and the first-level dust collection port 25 leads to the In the first-level dust cup 21.

4 and 5, a separator 3 is axially arranged in the middle of the filter cartridge 22, and a plurality of tangential air inlets 31 with gradually reduced diameters are opened in the middle of the side wall of the separator 3, and a plurality of tangential air inlets are provided. 31 is arranged around the circumference of the separator 3 . A hollow ventilation cylinder 32 is formed in the axial middle of the upper end of the filter cylinder 22, and a tertiary dust collection chamber 37 is formed at the bottom. A vent hole 35 is formed into the vent tube 32, and the baffle plate 34 has a spherical shape in the middle. An air intake channel 33 is formed between the dust inlet of the third-stage dust collection chamber 37 and the air outlet end of the third-stage accelerated centrifugal zone 38, and the air intake end of the air intake channel 33 is flared; There is a secondary filter screen 4 ; the annular cavity between the inner wall of the filter cartridge 22 and the secondary filter screen 4 forms a primary centrifugal zone 26 , and a tertiary accelerated centrifugal zone 38 is formed between the inner wall of the separator 3 and the outer wall of the ventilation cylinder 32 . In this embodiment, the upper end and the lower end of the separator 3 are sleeved with a sealing ring 3b and a sealing ring 3a.

3, the collection cover 5 includes a first receiving portion 51, a second receiving portion 52 and a third receiving portion 53. The first receiving portion 51 is located on one side of the second receiving portion 52, and the second receiving portion 52 is annular. The third receiving portion 53 is located at the center of the second receiving portion 52. When the collection cover 5 is closed, the first receiving portion 51 forms the bottom of the primary dust cup 21, and the second receiving portion 52 forms the bottom of the primary centrifugal zone 26. The three receiving parts 53 form the bottom of the third-stage dust collecting chamber 37 .

Working principle: The mixed air mixed with dust enters the air duct of the machine through the side air inlet 11 under the action of the negative pressure suction of the motor. In the first-level centrifugal zone 26, the dust density is greater than that of the air, so the heavy dust is affected by inertia and centrifugal force. Under the action, it rotates along the outer wall of the filter cartridge 22, and after passing through the primary dust collection port 25, the primary centrifugal zone 26 is thrown out and enters the primary dust cup 21; the mixed air passing through the primary centrifugal zone 26 continues to pass through the secondary centrifugal zone 26. The filter screen 4 enters the interior of the secondary filter screen 4, and part of the dust that cannot pass through the secondary filter screen 4 will continue to rotate, and is centrifuged again after being rotated until it is thrown out of the primary centrifugal zone 26. The mixed air entering the secondary filter screen 4 is affected by the rotational inertia of the primary centrifugal zone 26, continues to rotate and gathers in the center, and is further guided by the tangential air inlet 31 of the separator to accelerate the centrifugal zone 38 of the third stage, and the mixed air Keep spinning. In the mixed air entering the third-stage acceleration centrifugal zone 38, since the total cross-sectional area of the air duct is reduced, the rotating wind speed will be increased several times under the same air volume, so a stronger centrifugal force will be generated (if the wind speed is not increased, its The centrifugal force cannot be increased, and the dust separation effect cannot be achieved again). The accelerated rotating mixed air enters the air intake channel 33 under the action of suction, the air intake end of the air intake channel 33 is flared, and the cross-sectional area increases rapidly, and the dust is thrown into the third-level dust under the action of centrifugal force. In the collection chamber 37 , other air continues to enter the Hypa 6 through the ventilation tube 32 . After the gas is filtered by the high-density Hypa, the clean air continues to be inhaled into the motor, and finally discharged from the exhaust port 12 .

As shown in FIG. 6 , after the collection cover 5 is opened, the separated dusts in the three sections are poured out together, which is convenient.

Claims (6)

1. A hand-held vacuum cleaner, comprising a housing (1) and a motor (7) arranged in the housing (1), the outer side of the aforementioned housing (1) having a handle (13) for hand-held, and an air duct inside, The front end of the air duct forms a side air inlet (11), and the rear end forms an exhaust port (12). The aforementioned motor (7) accelerates the air in the air duct. It is characterized in that the air duct sequentially includes a first-stage centrifugal Zone (26), secondary filter screen (4), tertiary accelerated centrifugal zone (38) and Hypa (6), the aforementioned motor (7) is located at the outlet end of Hypa (6) and close to the exhaust of the air duct Port (12) setting. 2. The hand-held vacuum cleaner according to claim 1, characterized in that there is a longitudinally arranged filter cartridge (22) in the housing (1), and a high tangential air inlet ( 24) and a low-level first-level dust collection port (25), the tangential air inlet (24) is communicated with the side air inlet (11) of the aforementioned air duct, and the outer periphery of the aforementioned tangential air inlet (31) is sleeved with two The first-stage filter screen (4); the aforementioned first-stage dust collection port (25) leads to the first-stage dust cup (21); the middle of the filter cartridge (22) is axially provided with a separator (3), the separator (3) At least one tangential air inlet (31) with a gradually reduced diameter is opened in the middle of the side wall, a hollow ventilation tube (32) is formed in the axial middle of the upper end, and a three-stage dust collection chamber (37) is formed at the bottom. The top of the dust collection chamber (37) is provided with a baffle plate (34), and a ventilation hole (35) entering the ventilation cylinder (32) is formed between the baffle plate (34) and the lower end of the ventilation cylinder (32). The annular cavity between the inner wall of 22) and the secondary filter screen (4) forms a primary centrifugal zone (26), and a tertiary accelerated centrifugal zone ( 38); an air intake passage (33) is formed between the dust inlet of the aforementioned three-stage dust collection chamber (37) and the air outlet end of the three-stage accelerated centrifugal zone (38). Mouth-like. 3. The hand-held vacuum cleaner according to claim 2, characterized in that the baffle (34) has a spherical shape in the middle of the protrusion. 4. The hand-held vacuum cleaner according to claim 2, characterized in that there are at least two tangential air inlets (31) and are arranged around the circumferential direction of the separator (3). 5. The hand-held vacuum cleaner according to claim 2, characterized in that the housing (1) is provided with a collection cover (5) which can be opened and closed, and the collection cover (5) comprises a first receiving part (51), a second The second receiving portion (52) and the third receiving portion (53), the aforementioned first receiving portion (51) is located on one side of the second receiving portion (52), the aforementioned second receiving portion (52) is annular, and the aforementioned third receiving portion (52) is annular. The receiving part (53) is located at the center of the second receiving part (52). When the collecting cover (5) is closed, the first receiving part (51) forms the bottom of the first-stage dust cup (21), and the second receiving part (52) The bottom of the first-stage centrifugal zone (26) is formed, and the aforesaid third receiving part (53) forms the bottom of the third-stage dust collection chamber (37). 6. The hand-held vacuum cleaner according to claim 5, characterized in that the housing (1) has an inner cavity (15), the inner cavity (15) is provided with a lining shell (2), and the filter cartridge ( 22) is formed on the lining shell (2), the first-stage dust cup (21) is formed on the lining shell (2) and is located on the side of the filter cartridge (22), and the The tail end is provided with a sleeve portion (23) for the Hypa (6) to be provided with, and the collection cover (5) can be opened and closed at the bottom of the liner shell (2).

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