CN216823213U

CN216823213U - Hand-held vacuum cleaner

Info

Publication number: CN216823213U
Application number: CN202120647367.8U
Authority: CN
Inventors: 刘佳灵; 冯书周
Original assignee: Ningbo Kangfei Intelligent Technology Co ltd
Current assignee: Ningbo Kangfei Intelligent Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-06-28
Anticipated expiration: 2031-03-30

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

Hand-held vacuum cleaner

Technical Field

The utility model relates to a dust extraction especially relates to a dust catcher.

Background

At present, dust collectors are mostly divided into two types, one type is an older type dust collector with power line connection, and the dust collector of the type has the advantages of high power, large suction force, unlimited endurance time and the like. But also has the corresponding disadvantages that the power cord is convenient to use from time to time due to the fact that the power cord is arranged, and the length and the flexibility of the power cord are limited. The other hand-held vacuum cleaner with the battery, which is popular in recent years, has small volume, is internally provided with the battery, does not need to be connected with an electric wire when in use, and is particularly convenient and flexible. The defects that the battery number is limited due to the limitation of the weight of the whole machine (the use feeling is influenced by overweight), the endurance time is limited to a certain extent, and meanwhile, in order to achieve a good suction effect, the power of an internal motor needs to be increased to improve the suction, so that the shortening of the endurance time of the battery is aggravated.

In summary, in order to obtain better dust collection and endurance, the design requirements of the handheld dust collector are higher, and especially, the air duct design and the dust separation structure of the dust collector need to achieve better dust collection effect under the condition of the same or lower motor power.

When present hand-held type dust catcher's one-level filter screen filters, because wind channel and structural reason, do not have the dust space of depositing alone, the wind that mixes there is the dust foreign matter directly strikes the filter screen surface, and the filter screen surface can increase along with the dust like this, piles up at the filter screen surface and blocks up, blocks up the back, and the machine is unable normal use basically, and suction straight line reduces, and the noise improves. Such dust collection amount is limited. The dust separation effect is insufficient, so that more dust can be accumulated on the surface of the sea handkerchief after filtration, and the sea handkerchief is blocked. Resulting in the need for frequent cleaning of the machine and more filtered hpa. It can be seen that the existing handheld dust collector only has simple one-stage separation for separating dust passing through the filter screen, and has poor effect, so that the rear HEPA (filter element) is often easy to block, needs to be cleaned and is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a handheld dust collector capable of ensuring that an air duct is not blocked for a long time through graded filtering is provided aiming at the technical current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: 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.

The shell is internally provided with a filter cartridge which is longitudinally arranged, the side wall of the filter cartridge is provided with a high-level tangential air inlet and a low-level primary dust collecting port, the tangential air inlet is communicated with the lateral air inlet of the air duct, and the primary dust collecting port is introduced into a primary dust cup; the separator is axially arranged in the middle of the filter cylinder, at least one tangential air inlet with the gradually reduced caliber is formed in the middle of the side wall of the separator, a hollow ventilating cylinder is formed in the middle of the upper end in the axial direction, a three-stage dust collecting chamber is formed at the bottom of the hollow ventilating cylinder, a baffle is arranged at the top end of the three-stage dust collecting chamber, a ventilating hole entering the ventilating cylinder is formed between the baffle and the lower end of the ventilating cylinder, an air inlet channel is formed between a dust inlet of the three-stage dust collecting chamber and an air outlet end of the three-stage accelerating centrifugal area, and the air inlet end of the air inlet channel is in a flaring shape; a secondary filter screen is sleeved on the periphery of the tangential air inlet; the annular cavity between the inner wall of the filter cylinder and the filter screen forms a first-stage centrifugal area, and a third-stage acceleration centrifugal area is formed between the inner wall of the separator and the outer wall of the ventilation cylinder.

The shell can be equipped with the collection lid with opening and close, and this collection lid includes first accepting portion, second accepting portion and third accepting portion, and aforementioned first accepting portion is located second accepting portion one side, and aforementioned second accepting portion is the annular, and aforementioned third accepting portion is located second accepting portion central point, collects under the lid closed state, and aforementioned first accepting portion forms the bottom of one-level dirt cup, and aforementioned second accepting portion forms the bottom in one-level centrifugal zone, and aforementioned third accepting portion forms the bottom of tertiary dust collection room. After the collecting cover is opened, dust particles in the first-level dust cup, the second-level filter screen and the third-level dust collecting chamber can be collected at one time, and the cleaning operation is convenient.

In view of convenient arrangement and installation, the shell is provided with an inner cavity, a lining shell is arranged in the inner cavity, the filter cartridge is formed on the lining shell, the primary dust cup is formed on the lining shell and positioned on one side of the filter cartridge, the tail end of the lining shell is provided with a sleeve part for the arrangement of the HEPA, and the collecting cover can be arranged at the bottom of the lining shell in an opening and closing manner. The lining shell, the separator, the collecting cover, the secondary filter screen and the HEPA can form an assembly module, which is beneficial to assembly, maintenance and cleaning.

Preferably, the middle bulge of the baffle is spherical, so that dust particles can be collected in the three-stage dust collecting chamber.

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

Compared with the prior art, the utility model has the advantages of: the first-stage dust separation is centrifugal separation, the second-stage dust separation is filter dust separation by a filter screen, the third-stage dust separation is acceleration centrifugation, and the fourth-stage dust separation is HEPA filter separation; make the wind that is mingled with the dust in the wind channel design, can pass through wind channel shape and centrifugal principle, make the bulky, the dust of weight, it throws away to prolong the direction of involute through inertia, reach the first order and from the dirt effect, because first from the dirt, big dust has been separated out, the jam risk to the second grade filter screen has also been reduced, just also there is not the suction decay to exist simultaneously, tertiary filtration, because big and heavy particulate matter has been had one, the second grade filters, want to improve wind speed and centrifugal force with littleer dust, just can separate out, and then, reduce wind channel total sectional area, under same wind-force condition, the wind speed can improve several times, combine through rotatory centrifugation and parabolic principle, reach the effect of separation with littleer dust. After the first HEPA filtration, the clean air is discharged through an exhaust port.

Drawings

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

Fig. 2 is an exploded view of the embodiment.

FIG. 3 is a sectional view of the embodiment.

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

Fig. 5 is a partially enlarged perspective sectional view of the separator.

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

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, 2, 3 and 6, the handheld vacuum cleaner in this embodiment includes a housing 1, a motor 7 disposed in the housing 1, a lining shell 2 and a collecting cover 5, a handle 13 for holding is disposed outside the housing 1, an air duct is disposed inside the housing, a lateral air inlet 11 is formed at a front end of the air duct, an air outlet 12 is formed at a rear end of the air duct, a dust suction head (not shown) may be disposed on the lateral air inlet 11, the motor 7 gives air in the air duct for acceleration, the air duct sequentially includes a primary centrifugal region 26, a secondary filter screen 4, a tertiary acceleration centrifugal region 38 and a hepa 6, and the motor 7 is disposed at an air outlet end of the hepa 6 and is disposed near the air outlet 12 of the air duct.

The shell 1 is provided with an inner cavity 15, a lining shell 2 is arranged in the inner cavity 15, a filter cylinder 22, a first-level dust cup 21 and a sleeve part 23 are longitudinally arranged on the lining shell 2 in a forming mode, the first-level dust cup 21 is located on one side of the filter cylinder 22, the sleeve part 23 is formed at the tail end of the lining shell 2 and used for arranging a sea handkerchief 6, and the collecting cover 5 can be arranged at the bottom of the lining shell 2 in an opening and closing mode. The side wall of the filter cartridge 22 is provided with a high-level tangential air inlet 24 and a low-level primary dust collecting port 25, the tangential air inlet 24 is communicated with the lateral air inlet 11 of the air duct, and the primary dust collecting port 25 is communicated into the primary dust cup 21.

As shown in fig. 4 and 5, the separator 3 is axially disposed in the middle of the filter cartridge 22, the separator 3 has a plurality of tangential gas inlets 31 with gradually decreasing diameters formed in the middle of the sidewall thereof, and the plurality of tangential gas inlets 31 are arranged around the separator 3 in the circumferential direction. The filter cylinder 22 is formed with a hollow air cylinder 32 at the axial middle of the upper end, a tertiary dust collecting chamber 37 is formed at the bottom, a baffle 34 is arranged at the top end of the tertiary dust collecting chamber 37, a vent hole 35 entering the air cylinder 32 is formed between the baffle 34 and the lower end of the air cylinder 32, and the middle of the baffle 34 is convex in a spherical shape. An air inlet channel 33 is formed between the dust inlet of the third-stage dust collecting chamber 37 and the air outlet end of the third-stage accelerating centrifugal area 38, and the air inlet end of the air inlet channel 33 is in a flaring shape; the periphery of the tangential air inlet 31 is sleeved with 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 acceleration centrifugal zone 38 is formed between the inner wall of the separator 3 and the outer wall of the aeration cylinder 32. The upper end and the lower end of the separator 3 in this embodiment are both sleeved with a seal ring 3b and a seal ring 3 a.

Referring to fig. 3, the collecting 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, 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 collecting cover 5 is closed, the first receiving portion 51 forms the bottom of the primary dirt cup 21, the second receiving portion 52 forms the bottom of the primary centrifugal area 26, and the third receiving portion 53 forms the bottom of the tertiary dirt collecting chamber 37.

The working principle is as follows: the mixed air mixed with dust enters the machine air duct through the lateral air inlet 11 under the action of the negative pressure suction force of the motor, the dust density is higher than that of the air in the primary centrifugal area 26, so that the dust with larger weight rotates along the outer wall of the filter cartridge 22 under the action of inertia and centrifugal force, and is thrown out of the primary centrifugal area 26 through the primary dust collecting port 25 and enters the primary dust cup 21; the mixed air passing through the primary centrifugal zone 26 continuously passes through the secondary filter screen 4 and enters the secondary filter screen 4, and part of dust which cannot pass through the secondary filter screen 4 continuously rotates and is centrifugally separated again after rotating until being thrown out of the primary centrifugal zone 26. The mixed air entering the inside of the secondary filter screen 4 is influenced by the rotational inertia of the primary centrifugal area 26, continues to rotate and gathers towards the center, and continues to rotate through the further guidance of the tangential air inlet 31 of the separator and the tertiary acceleration centrifugal area 38. In the mixed air entering the tertiary accelerating centrifugal area 38, since the total sectional area of the air duct is reduced, the rotating wind speed is increased by several times under the same wind volume, so that a stronger centrifugal force is generated (if the wind speed is not increased, the centrifugal force cannot be increased, and the dust separation effect can not be achieved again). The mixed air rotating at an accelerated speed enters the air inlet channel 33 under the action of suction force, the air inlet end of the air inlet channel 33 is in a flaring shape, the cross section area is rapidly enlarged, dust is thrown into the three-stage dust collecting chamber 37 under the action of centrifugal force, other air continuously enters the HEPA 6 after passing through the air cylinder 32, and after the air is filtered by the high-density HEPA, clean air is continuously sucked into the motor and finally discharged from the exhaust port 12.

As shown in fig. 6, after the collecting cover 5 is opened, the three regions are separated, and the separated dust is poured out together, which is convenient.

Claims

1. The utility model provides a handheld dust catcher, includes casing (1) and locates motor (7) in casing (1), and aforementioned casing (1) outside has and supplies handheld stalk portion (13), and inside has the wind channel, and the front end in this wind channel forms side direction air intake (11), and the rear end forms gas vent (12), and aforementioned motor (7) give the air in the wind channel in order accelerating, its characterized in that the wind channel include one-level centrifugation district (26), second grade filter screen (4), tertiary acceleration centrifugation district (38) and handkerchief (6) in proper order, the end of giving vent to anger of handkerchief (6) and gas vent (12) setting near the wind channel are located in aforementioned motor (7).

2. The handheld vacuum cleaner as claimed in claim 1, wherein the housing (1) has a longitudinally disposed filter cartridge (22), the side wall of the filter cartridge (22) is provided with a high-level tangential air inlet (24) and a low-level primary dust collecting port (25), the tangential air inlet (24) is communicated with the lateral air inlet (11) of the air duct, and the periphery of the tangential air inlet (31) is sleeved with a secondary filter screen (4); the primary dust collecting port (25) is communicated into the primary dust cup (21); the separator (3) is axially arranged in the middle of the filter cartridge (22), at least one tangential air inlet (31) with the gradually reduced caliber is formed in the middle of the side wall of the separator (3), a hollow ventilation cylinder (32) is formed in the axial middle of the upper end, a three-stage dust collecting chamber (37) is formed at the bottom of the separator, a baffle (34) is arranged at the top end of the three-stage dust collecting chamber (37), a vent hole (35) entering the ventilation cylinder (32) is formed between the baffle (34) and the lower end of the ventilation cylinder (32), a primary centrifugal area (26) is formed between the inner wall of the filter cartridge (22) and the secondary filter screen (4), and a three-stage accelerating centrifugal area (38) is formed between the inner wall of the separator (3) and the outer wall of the ventilation cylinder (32); an air inlet channel (33) is formed between the dust inlet of the three-stage dust collecting chamber (37) and the air outlet end of the three-stage acceleration centrifugal area (38), and the air inlet end of the air inlet channel (33) is in a flaring shape.

3. The hand-held cleaner as claimed in claim 2, wherein the baffle (34) is spherical in shape.

4. A hand-held cleaner according to claim 2, characterised in that the tangential air inlets (31) are at least two and arranged around the circumference of the separator (3).

5. The hand-held cleaner according to claim 2, wherein the housing (1) is provided with a collecting cover (5) in an openable and closable manner, the collecting cover (5) comprises 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), the second receiving portion (52) is annular, the third receiving portion (53) is located at the center of the second receiving portion (52), and when the collecting cover (5) is in a closed state, the first receiving portion (51) forms the bottom of the primary dust cup (21), the second receiving portion (52) forms the bottom of the primary centrifugal region (26), and the third receiving portion (53) forms the bottom of the tertiary dust collecting chamber (37).

6. The hand-held vacuum cleaner according to claim 5, characterized in that the housing (1) has an inner cavity (15), a lining shell (2) is arranged in the inner cavity (15), the filter cartridge (22) is formed on the lining shell (2), the primary dust cup (21) is formed on the lining shell (2) and is positioned at one side of the filter cartridge (22), the tail end of the lining shell (2) is provided with a sleeve part (23) for the arrangement of the HEPA (6), and the collecting cover (5) can be arranged at the bottom of the lining shell (2) in an opening and closing manner.