CN213488584U - Portable dust collector with inner air duct and outer air duct - Google Patents

Abstract

The utility model relates to a portable dust catcher technical field especially relates to a portable dust catcher with inside and outside wind channel. The portable dust collector with the inner air duct and the outer air duct is of a cylinder structure and comprises a dust collecting cup and a cylinder body which are detachably connected. The dust collecting cup is far away from one end of the barrel and is provided with a dust suction port, the dust collecting cup is internally detachably provided with a filtering component, the barrel is internally detachably provided with a motor and a battery component in sequence along the airflow flowing direction, and the barrel is far away from the end part of the dust collecting cup and is provided with an air outlet. The battery component comprises a battery bracket and a battery pack, the cross section of the battery bracket is of a triangular structure, and the battery bracket and the inner wall of the cylinder form an outer air duct. The group battery includes 3 batteries, divides 3 apex angles of locating battery support triangular structure, and wind channel in the group battery inner space formation, battery support and barrel inner wall bolted connection. The utility model discloses set up inside and outside air-out wind channel, enlarge air-out area, increase air volume and ventilation efficiency improve the suction and the dust collection efficiency of handy dust catcher, help the heat dissipation of motor and battery, increase of service life.

Description

Portable dust collector with inner air duct and outer air duct

Technical Field

The utility model relates to a portable dust catcher technical field especially relates to a portable dust catcher with inside and outside wind channel.

Background

The portable dust collector is a household vehicle-mounted dual-purpose small dust collector, meets the dust collection requirements of people on narrow gaps, desktops, keyboards and the like in a vehicle, is not convenient for cleaning dust collection scenes, and is small in shape, convenient to carry and store. The working principle of the portable dust collector is as follows: the motor works to discharge the air in the cylinder at a high speed from the air outlet, the cylinder and the dust collection bin form instant vacuum, namely, the cylinder and the external atmosphere form high negative pressure difference, airflow carrying granular dirt such as dust is forced to enter the cylinder through the dust collection bin, the granular dirt such as the dust is left in the dust collection bin after being filtered by the filter screen in the dust collection bin, and the clean air flows through the motor and the battery pack and is discharged out of the cylinder through the air outlet to finish the dust collection action.

The existing portable dust collector is limited by the size of a product, and the size of an air inlet channel cannot be set too large, so that the air inlet amount is small, and the dust collection efficiency of the small dust collector is inevitably influenced; in addition, internal devices such as motors and batteries can generate a large amount of heat due to long-term work to cause the temperature rise of the motors and the batteries, and the service life is inevitably influenced due to the fact that the air inlet volume is small, the heat of the internal devices such as the motors and the batteries is not easy to dissipate. In conclusion, the existing portable dust collector has weak suction force, is difficult to meet the cleaning requirement, and simultaneously the service life of the product needs to be prolonged.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above disadvantages and deficiencies of the prior art, the utility model provides a portable vacuum cleaner with inner and outer wind channel, which solves the technical problems of small suction force and short service life of the prior portable vacuum cleaner.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

the utility model provides a portable dust collector with an inner air duct and an outer air duct, which is of a cylinder structure and comprises a dust cup and a cylinder body, wherein the dust cup and the cylinder body are detachably connected; a dust suction port is formed in one end, away from the barrel, of the dust collecting cup, a filtering component is detachably arranged in the dust collecting cup, a motor and a battery component are detachably arranged in the barrel in sequence along the airflow flowing direction, and an air outlet is formed in the end, away from the dust collecting cup, of the barrel;

the battery component comprises a battery bracket and a battery pack, the cross section of the battery bracket is of a triangular structure, and an outer air duct is formed between the battery bracket of the triangular structure and the inner wall of the cylinder;

the group battery include 3 batteries, set up respectively in 3 apex angle departments of battery support triangular structure, wind channel in the group battery inner space formation, battery support passes through bolted connection with the barrel inner wall.

According to the utility model, the end face of the barrel body connected with the dust collecting cup is provided with an air inlet which is in a round table shape and a grid shape.

According to the utility model, the dust collecting cup comprises a cup body and a cup cover movably pivoted on the cup body, and the dust collection port is formed at the end part of the cup cover;

on the bowl cover and the cup of one side opposite with pin joint structure, be provided with make the bowl cover lock in the hasp structure of cup, the hasp structure includes: the sliding groove is arranged at the buckling position of the cup cover and the outer wall surface of the cup body, and the button can be arranged in the sliding groove in a sliding manner; when the button is positioned at the end part of the sliding groove on the outer wall surface of the cup cover, the button is in a locking state, and the cup cover and the cup body are buckled; when the key is positioned at the end part of the sliding groove on the outer wall surface of the cup body, the key is in a non-locking state and can be pressed down to open the cup cover.

According to the utility model, a valve block which can be opened in a pivoting way is arranged in the cup cover corresponding to the air suction opening, and when the portable dust collector is in a working state, the valve block is in a state of opening the dust suction opening under the action of air flow; when the portable dust collector is in a non-working state, the valve plate is in a state of closing the dust collection opening.

According to the utility model discloses, pin joint structure is provided with elastic component and spacing arch, when the bowl cover was released from the lock state under the effect of elastic component, the bowl cover pivot is opened, and under the effect of spacing arch, the bowl cover pivot keeps at this angle after 180 degrees.

According to the utility model discloses, the connection structure dismantled between dust cup and the barrel does:

the end part of the dust collecting cup connected with the barrel forms a first annular limiting step surface and a first L-shaped clamping groove, and the inner wall of the barrel is correspondingly provided with a clamping bulge;

the end part of the outer wall of the barrel body is abutted against the first annular limiting step surface, and meanwhile, when the clamping protrusion is positioned in the first L-shaped clamping groove, one of the dust collecting cup and the barrel body can be rotated to enable the clamping protrusion to slide into the first L-shaped clamping groove, so that the connection of the dust collecting cup and the barrel body is completed.

According to the utility model discloses, filtering component includes: the HEPA filter screen is characterized by comprising a primary filter screen which is approximately barrel-shaped and provided with an open end, and an HEPA filter screen which is detachably sleeved in the primary filter screen from the open end; the semicircular handle is rotatably connected with the end face of the open end of the filter assembly, and the handle is attached to the end face of the open end when the filter assembly is positioned in the dust collecting cup.

According to the utility model discloses, the HEPA filter screen with the tip that the primary filter screen is connected is equipped with annular groove one, the upper end of annular groove one is equipped with the protruding two of block of the inner wall of connecting annular groove one and outer wall, the outer wall correspondence of the opening end of primary filter screen sets up L type block groove two.

According to the utility model discloses, every battery corresponds sets up an NTC thermistor.

According to the utility model discloses, the barrel tip still is provided with Type-C mouth that charges.

(III) advantageous effects

The utility model has the advantages that:

the utility model provides a handy dust catcher with inside and outside wind channel owing to adopt the battery holder of the transversal triangle-shaped structure of personally submitting, form outer wind channel between battery holder and the barrel inner wall, wind channel in the group battery inner space formation, through inside and outside wind channel, enlarged the air-out area, the increase air volume has improved ventilation efficiency, and then has improved the suction and the dust collection efficiency of handy dust catcher to help the heat dissipation of motor and battery, prolonged the life of device. Meanwhile, the battery bracket with the triangular cross section can reduce the outer diameter of the portable dust collector to about 55mm, the diameter of the battery bracket is small, the battery bracket can be held tightly by one hand and is convenient to hold, the arrangement of the handle is omitted, the overall length of the portable dust collector is shortened, and the portable dust collector is convenient to store and carry.

Secondly, because the end face of the cylinder body connected with the dust collecting cup is provided with the air inlet which is in a round table shape and a grid shape, the air inlet area is enlarged, the air inlet amount and the air inlet efficiency are increased, the suction force and the dust collection efficiency of the portable dust collector are further improved, the heat dissipation of the motor and the battery is facilitated, and the service life of the device is prolonged.

The dust collecting cup is connected with the cylinder body in a clamping manner, the dust collecting cup is elastically connected with the filtering component, and the primary filter screen and the HEPA filter screen are connected in a clamping manner, so that the filtering component, the dust collecting cup and the cylinder body can be conveniently mounted and dismounted.

Because the terminal surface of filter component open end sets up semicircular handle, the finger catches on the handle and can conveniently rotate or push-and-pull filter component to accomplish the installation dismantlement between primary filter screen and HEPA filter screen, improved the convenience of operation.

Because each battery is separately provided with the NTC thermistor, when the temperature of one battery reaches a set threshold value, the NTC thermistor transmits a signal to the control circuit board to control the motor to stop working, thereby improving the safety of the portable dust collector.

Because bowl cover and cup pass through the hasp structure and realize that a key pops open, when sliding the button to the spout tip of the outer wall of cup and pressing the button promptly, the bowl cover can be popped open automatically, can accomplish the one-hand of dust in the cup and empty, avoids dust and foul to pollute the hand, improves the cleaning, and the operation is more convenient.

Because the pivot structure is provided with the limiting bulge, the cup cover can be kept at the angle after pivoting for 180 degrees, so that the cup cover can be kept fixed in position when in an open state, the cup cover is prevented from shaking randomly, and dust can be poured easily.

Because the pin joint structure and the outer wall of the portable dust collector form a support structure, the arrangement of the supporting bulge is cancelled, the appearance is simpler, and the processing is simpler.

Drawings

FIG. 1 is a perspective view of the handy cleaner with inner and outer air ducts of the present invention;

figure 2 is a perspective view of the dirt cup of figure 1;

figure 3 is a cross-sectional view of the dirt cup of figure 2;

FIG. 4 is a perspective view of the primary filter screen of FIG. 1;

FIG. 5 is a perspective view of the HEPA filter screen of FIG. 1;

FIG. 6 is a perspective view of the end of the cartridge of FIG. 1;

FIG. 7 is a schematic cross-sectional view of the barrel end of FIG. 6;

fig. 8 is a schematic cross-sectional view of the battery holder of fig. 1.

[ description of reference ]

1: a cup cover; 11: a dust suction port; 12: a limiting groove; 2: a cup body; 21: a first annular limiting step surface; 22: a second annular limiting step surface; 23: the L-shaped clamping groove I; 3: a barrel; 31: the card and the first bulge; 32: a third annular limiting step surface; 33: a clamping groove; 34: a power indicator light; 35: a power switch key; 36: an air outlet; 37: a Type-C charging port; 5: a locking structure; 51: a guide projection; 52: pressing a key; 6: a pin joint structure; 61: a limiting bulge; 71: a primary filter screen; 711: an open end; 712: a second L-shaped clamping groove; 72: a HEPA filter screen; 721: a handle; 722: a first annular groove; 723: a second card and a second bulge; 724: a second annular groove; 81: a support plate; 811: a third clamping bulge; 82: an air inlet; 91: a battery holder; 911: a through hole; 912: a vent hole.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

Referring to fig. 1, the embodiment of the present invention provides a handy vacuum cleaner with an internal and external air duct, the handy vacuum cleaner is a cylinder structure, including a dust cup and a cylinder 3, the dust cup and the cylinder 3 are detachably connected. The dust collecting device is characterized in that a dust suction port 11 is formed in one end, away from the barrel 3, of the dust collecting cup, a filtering component is detachably arranged in the dust collecting cup, a motor and a battery component are detachably arranged in the barrel 3 in sequence along the airflow flowing direction, and an air outlet 36 is formed in the end, away from the dust collecting cup, of the barrel 3. When the portable dust collector is started, the motor starts to work, so that air flow enters the dust collecting cup from the dust collecting opening, enters the barrel after passing through the filtering component in the dust collecting cup, and is discharged from the air outlet at the end part of the barrel through the inner air duct and the outer air duct in the barrel, therefore, a linear air flow channel is formed in the portable dust collector, and the air flow can rapidly pass through the portable dust collector; the arrangement of the inner air channel and the outer air channel ensures that the portable dust collector is not limited by the size of the product, improves the ventilation and dust collection efficiency, can quickly take away the heat inside the barrel, and prolongs the service life of the product.

Further, as shown in fig. 2 and 3, the dust cup comprises a cup body 2 and a cup cover 1 movably pivoted to the cup body 2, and the dust suction port 11 is formed at an end of the cup cover 1. The suction airflow generated by the product carries granular dirt such as dust and the like into the cup body 2 of the dust cup through the dust suction opening 11, and the granular dirt such as the dust and the like is reserved in the cup body 2 because the filter assembly is arranged in the cup body 2, and the clean airflow passing through the filter assembly enters the barrel body 3.

As shown in fig. 3, on bowl cover 1 and the cup 2 of 6 relative one sides of pin joint structure, be provided with make bowl cover 1 lock in the hasp structure 5 of cup 2, hasp structure 5 includes: the cup comprises a sliding groove arranged at the buckling position of the outer wall surfaces of the cup cover 1 and the cup body 2 and a key 52 arranged in the sliding groove in a sliding manner, wherein the key 52 can be in a long circle shape matched with the sliding groove or other shapes such as a chamfered rectangle and the like, the key 52 is close to the surface of the barrel body 3 and is provided with a circular concave for prompting a user to touch the key part when operating the key through different touch senses, so that the user can save more labor and have better use experience when opening or closing the cup cover; when a user closes the cup cover 1 and pushes against the circular lower concave part of the key 52, the key 52 slides to the end part of the sliding groove on the outer wall surface of the cup cover 1, the key 52 is in a locking state, and the cup cover 1 and the cup body 2 are kept buckled; when the user dials back the button 52 to slide the button 52 to the end of the sliding groove on the outer wall surface of the cup body 2, the button 52 is in an unlocked state, and the circular concave part of the button 52 is pressed to release the buckling between the cup cover 1 and the cup body 2.

The pin joint structure 6 is provided with an elastic piece and a limiting bulge 61, and the cup cover 1 is provided with a limiting groove 12 matched with the limiting bulge 61. When the cup cover 1 is released from the buckling state, under the action of the elastic piece, the cup cover 1 is pivoted and opened, and after the cup cover 1 is pivoted for 180 degrees, the limiting bulge 61 sinks into the limiting groove 12, so that the cup cover 1 is kept at the angle.

The dust cup of the prior portable dust collector is generally connected with the cylinder 3 by screw threads, and when dirt such as dust in the dust cup is dumped, the dust cup needs to be dismounted by two hands. Bowl cover 1 in this embodiment can realize a key through hasp structure 5 and bounce out, slides button 52 promptly to the cup 2 outer wall's spout tip and when pressing button 52, bowl cover 1 can bounce out automatically, can accomplish the one-hand of 2 interior dusts of cup and empty, avoids dust and foul pollution hands, improves the cleaning, and the operation is more convenient. Meanwhile, the cup cover 1 can keep fixed in position when in an opening state, so that the cup cover 1 is prevented from shaking randomly, and dust can be poured easily.

Meanwhile, in the prior art, in order to facilitate the stable placement of the portable dust collector on a smooth plane without rolling, a supporting bulge is generally arranged on the outer wall, and the supporting bulge and the outer wall of the portable dust collector form a support structure, so that the portable dust collector can be prevented from rolling freely. The supporting structure of the portable dust collector can be formed simultaneously through the pin joint structure 6, the supporting protrusion does not need to be arranged independently, the horizontal surface of any article can be prevented from rolling when the product is not used, the appearance of the product is more concise, and the processing is simpler.

The lock catch structure 5 further comprises a guide protrusion 51 slidably arranged in the sliding groove, the guide protrusion 51 synchronously moves along with the key 52 along the axial direction of the cup body 2, and the guide protrusion 51 plays a role in guiding the movement of the key 52. The shapes of the guide projection 51 and the key 52 have no fixed requirement, and for convenience of operation, the guide projection 51 is preferably in a straight structure in the embodiment.

Furthermore, a valve plate capable of being opened in a pivoting mode is arranged in the cup cover 1 corresponding to the dust collection port 11, and when the portable dust collector is in a working state, the valve plate is in a state of opening the dust collection port 11 under the action of air flow; when the portable dust collector is in a non-working state, the valve plate is in a state of closing the dust collection port 11. Prevent external dust and other granular dirt from entering the inside when the portable dust collector is in a non-working state, and prevent the dust and the dirt in the cup body 2 from flowing back out of the dust collection port 11 to cause secondary pollution.

As shown in fig. 2 and 6, further, the detachable connection structure between the dust cup and the cylinder 3 is:

the end part of the dust collecting cup connected with the barrel body 3 forms a first annular limiting step surface 21 and a first L-shaped clamping groove 23, and a first clamping bulge 31 is correspondingly arranged on the inner wall of the barrel body 3.

When the dust cup is connected with the barrel body 3, the dust cup is inserted into the barrel body 3 until the end part of the outer wall of the barrel body 3 abuts against the first annular limiting step surface 21, meanwhile, the first clamp and the first bulge 31 are inserted into the first L-shaped clamping groove 23, one of the dust cup and the barrel body 3 is rotated, so that the first clamp and the first bulge 31 slide into the first L-shaped clamping groove 23, and connection is completed. The way of snap-fit connection between the dust cup and the barrel 3 in this embodiment is a preferred embodiment, and other detachable connection ways such as screw connection can be adopted between the dust cup and the barrel 3.

Specifically, the number of the first clips and protrusions 31 and the number of the first L-shaped engaging grooves 23 may be determined according to actual requirements, and in order to improve the assembling stability of the dust cup and the barrel 3 and make the structure simpler, the present embodiment preferably includes three first clips and protrusions 31 and three first L-shaped engaging grooves 23.

As shown in fig. 4 and 5, further, the filter assembly includes:

the filter comprises a primary filter screen 71 which is approximately barrel-shaped and is provided with an open end 711, and a HEPA filter screen 72 which is detachably sleeved inside the primary filter screen 71 through the open end 711. A handle 721 having a semicircular shape is rotatably connected to the end surface of the open end 711 of the filter assembly, and when the filter assembly is located in the dust cup, the handle 721 is attached to the end surface of the open end 711. In order to improve the comfort of use, the present embodiment provides a handle 721 having a semicircular shape, and the handle 721 may be configured in any shape that can realize a convenient attachment and detachment function.

The primary filter screen 71 is used for filtering dust particles with the diameter larger than 5 mu m, and the HEPA filter screen 72 can filter dust particles with the diameter smaller than 3 mu m. After the airflow carrying dust and granular dirt is sequentially filtered by the primary filter 71 and the HEPA filter 72, the dust and granular dirt are kept on the filters, and clean air enters the barrel 3 and is discharged out of the barrel 3 through the air outlet 41.

Further, the end part of HEPA filter screen 72 with primary filter screen 71 is connected is equipped with annular groove 722, the upper end of annular groove 722 is equipped with the protruding two 723 of block of connecting inner wall and outer wall, the outer wall of the open end 711 of primary filter screen 71 corresponds sets up L type block groove two 712.

Connect primary filter screen 71 with during HEPA filter screen 72, will primary filter screen 71's open end 711 inserts annular groove one 722 to the tip butt of open end 711 the bottom of annular groove one 722, two 723 insert two 712 in the L type block groove of block simultaneously, rotate primary filter screen 71 with one of HEPA filter screen 72 for protruding two 723 of block slide in two 712 in the L type block groove, the completion is connected.

Further, the detachable connection structure between the filter assembly and the dust cup is as follows:

the end part of the dust collecting cup connected with the filtering component is provided with a second annular limiting step surface 22, and the outer wall of the HEPA filter screen 72 is correspondingly provided with a second annular groove 724 for mounting an elastic sealing ring. The elastic sealing ring can be tightly attached to the dust collecting cup without displacement when the filtering component is assembled with the dust collecting cup, and the elastic sealing ring can be made of any appropriate elastic wear-resistant material such as rubber or silica gel.

When the dust cup and the filter component are connected, the filter component is inserted into the dust cup until the end part of the filter component close to one end of the open end 711 abuts against the second annular limiting step surface 22, and the connection is completed. In order to improve the convenience and tightness of assembly, the dust cup is preferably elastically connected with the filter assembly in the embodiment, and other detachable connection modes such as threaded connection and the like can be adopted between the dust cup and the filter assembly actually.

In practical use, the primary filter screen 71 needs to be detached and cleaned regularly to keep clean, so that dust blockage is avoided from affecting dust collection efficiency, but dust and dirt adhered to the primary filter screen 71 are difficult to clean thoroughly after long-term use, so that blockage is caused, and the suction force of the portable dust collector is affected. It is expensive for consumers to replace the handy cleaner periodically. In the embodiment, the installation and disassembly of the filter assembly, the dust cup and the barrel 3 can be conveniently completed by arranging the clamping connection between the dust cup and the barrel 3, the elastic connection between the dust cup and the filter assembly and the clamping connection between the primary filter screen 71 and the HEPA filter screen 72. The semicircular handle 721 is arranged on the end face of the opening end 711 of the filtering component, and the filtering component can be conveniently rotated or pushed and pulled by hooking fingers on the handle, so that the installation and the disassembly between the primary filtering net 71 and the HEPA filtering net 72 are completed, and the convenience of operation is improved. When the primary filter screen 71 reaches the service life, the new primary filter screen 71 can be replaced conveniently, and the primary filter screen 71 is low in price, so that the purchase burden of a user can be reduced.

Furthermore, the end face of the cylinder 3 connected with the dust cup is provided with a truncated cone-shaped and grid-shaped air inlet 82.

Limited by the size of the product, the size of the air inlet channel of the conventional portable dust collector is relatively small, so that the air inlet amount is small, and the dust collection efficiency of the portable dust collector is influenced. When the motor and the battery are operated for a long time, a large amount of heat is generated by internal devices such as the motor and the battery due to operation requirements, and the temperature of the motor and the battery is increased. Because the intake is little, internal equipments such as motor and battery are difficult for ventilating the heat dissipation, and long-term high heat work can shorten the life of internal equipments such as motor and battery. In the embodiment, the air inlet 82 in the shape of a circular truncated cone and a grid is arranged, so that the air inlet area is enlarged, the air inlet amount and the air inlet efficiency are increased, the suction force and the dust collection efficiency of the portable dust collector are improved, the heat dissipation of the motor and the battery is facilitated, and the service life of the device is prolonged.

As shown in fig. 7, further, the air inlet 82 is disposed on a supporting plate 81 detachably fixed on the inner wall of the cylinder 3, and the detachable connection structure between the cylinder 3 and the supporting plate 81 is:

the end part of the barrel 3 connected with the supporting plate 81 forms a third annular limiting step surface 32 and a clamping groove 33, and the outer wall of the supporting plate 81 is correspondingly provided with a third clamping protrusion 811.

When the supporting plate 81 and the barrel 3 are connected, the supporting plate 81 is inserted into the barrel 3 until the end part of the supporting plate 81 abuts against the third annular limiting step surface 32, and meanwhile, the third clamping protrusion 811 is inserted into the clamping groove 33, so that the connection is completed. In order to facilitate the assembly and disassembly and improve the sealing performance, the support plate 81 is preferably engaged with the barrel 3 in this embodiment, and other detachable connection methods such as screw connection can be adopted between the support plate 81 and the barrel 3.

As shown in fig. 8, further, the battery assembly includes a battery holder 91 with a triangular cross section and a battery pack, and an outer air duct is formed between the battery holder 91 with a triangular cross section and the inner wall of the barrel 3. Three through-holes 911 are arranged at three vertexes of the triangular structure of the battery support 91, and three batteries included in the battery pack are respectively arranged in the three through-holes 911. The inside of battery holder 91 is equipped with a plurality of ventilation hole 912, ventilation hole 912 forms interior wind channel, battery holder passes through bolted connection with the barrel inner wall.

The outer diameter of the conventional portable dust collector is large, the conventional portable dust collector is difficult to hold by a single hand, and an annular or cylindrical handle is generally arranged at the tail end of the portable dust collector for convenient holding, so that the length of the portable dust collector is prolonged, and the difficulty is brought for storage and carrying. In the embodiment, the battery support 91 with the triangular cross section is arranged, so that the outer diameter of the portable dust collector is reduced to about 55mm, the diameter of the portable dust collector is smaller, the portable dust collector can be held tightly by a single hand and is convenient to hold, the arrangement of the handle is omitted, the overall length of the portable dust collector is shortened, and the portable dust collector is convenient to store and carry.

Limited by the size of the product, the size of the air outlet channel of the existing portable dust collector is relatively small, so that the air outlet quantity is small, and the dust collection efficiency of the portable dust collector is influenced. When the motor and the battery are operated for a long time, a large amount of heat is generated by internal devices such as the motor and the battery due to operation requirements, and the temperature of the motor and the battery is increased. Because the air output is little, internal devices such as motor and battery are difficult for ventilating the heat dissipation, and long-term high heat work can shorten the life of internal devices such as motor and battery. This application has enlarged the air-out area through setting up inside and outside air-out wind channel, increases air output and air-out efficiency, has improved the suction and the dust collection efficiency of handy dust catcher to help the heat dissipation of motor and battery, prolonged the life of device.

Further, an NTC thermistor is correspondingly arranged on each battery.

Further, the handy cleaner with the inner and outer air ducts further comprises a control circuit board, the control circuit board is fixed on the battery bracket 91, and the motor, the battery assembly, the NTC thermistor and the control circuit board are electrically connected through a wire.

In order to ensure the cruising ability and the suction force of the portable dust collector, two to three batteries are needed to supply power. In the use process, the temperature of the battery rises due to long-time use, and potential safety hazards of explosion exist. In the embodiment, in order to improve the suction force and the cruising ability of the device, three batteries are arranged, an NTC thermistor is independently arranged on each battery, and when the temperature of one battery reaches a set threshold value, the NTC thermistor transmits a signal to a control circuit board to control a motor to stop working, so that the safety of the portable dust collector is improved. Meanwhile, each battery is independently provided with the corresponding NTC thermistor, so that the accuracy of monitoring the temperature of the battery pack is improved.

Further, the outer wall of barrel 3 is equipped with power indicator 34 and switch button 35 and, switch button 35, power indicator 34 and control circuit board electric connection, switch button 35 is used for controlling the opening and closing of handy dust catcher, switch button 34 be used for the suggestion handy dust catcher open and close.

Further, the tip that the dust cup was kept away from to barrel 3 still is equipped with Type-C charging port 37, but any charging wire that has Type-C port of adaptation for charging of handy dust catcher is more convenient.

Further, the portable dust collector also comprises a brush head and an extension handle. The tip of brush head sets up the arch, the tip that extension handle and brush head are connected sets up the draw-in groove, the tip that extension handle and dust absorption mouth 11 are connected sets up the arch, the corresponding position department of 11 tip in dust absorption mouth sets up the draw-in groove, the cross sectional shape of brush head, extension handle and 11 matching ends in dust absorption mouth is unanimous for brush head and extension handle can be alone or the combination is installed on dust absorption mouth 11, can satisfy the clean demand of different scenes, but has enlarged clean scope.

Optionally, the end of the brush head is provided with a clamping groove, the end of the extension handle connected with the brush head is provided with a protrusion, the end of the extension handle connected with the dust suction port 11 is provided with a protrusion, the corresponding position of the end of the dust suction port 11 is provided with a clamping groove, and the cross-sectional shapes of the matching ends of the brush head, the extension handle and the dust suction port 11 are consistent, so that the brush head and the extension handle can be installed on the dust suction port 11 alone or in combination. The arrangement of the detents or projections in the different parts of the embodiment is merely illustrative and other alternative combinations are possible as long as the requirement is met that the brush head and the elongate shaft can be mounted separately or in combination in the suction opening 11.

The working principle of the device is as follows:

the power switch key 35 is pressed down, the battery provides electric energy for the motor, the motor works, air in the barrel 3 is discharged from the air outlet 36 at a high speed, the barrel 3 and the dust cup form instant vacuum, namely, the barrel 3 and the external atmosphere form a high negative pressure difference, airflow carrying granular dirt such as dust is forced to enter the dust cup through the dust suction port 11, the granular dirt such as dust is left in the dust cup after being filtered by the primary filter screen 71 and the HEPA filter screen 72, clean air flows through the motor and the battery component and is discharged out of the barrel 3 from the air outlet 36, and dust suction is completed.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A kind of portable dust collector with inner and outer wind channel, the said portable dust collector is a cylindrical structure, including dust cup and cylinder (3), the dust cup is connected with cylinder (3) removably; a dust suction port (11) is formed in one end, away from the barrel body (3), of the dust collecting cup, a filtering component is detachably arranged in the dust collecting cup, a motor and a battery component are detachably arranged in the barrel body (3) in sequence along the airflow flowing direction, and an air outlet (36) is formed in the end, away from the dust collecting cup, of the barrel body (3);

the solar water heater is characterized in that the battery component comprises a battery bracket (91) with a triangular cross section and a battery pack, and an outer air duct is formed between the battery bracket (91) with the triangular cross section and the inner wall of the barrel (3);

the group battery include 3 batteries, set up respectively in 3 apex angle departments of battery support triangular structure, wind channel in the group battery inner space formation, battery support (91) pass through bolted connection with barrel (3) inner wall.

2. The handy cleaner with the inner and outer air ducts as claimed in claim 1, wherein the end surface of the cylinder (3) connected to the dust cup is provided with an air inlet (82) in the shape of a truncated cone or a grid.

3. The handy cleaner having the inner and outer air paths as set forth in claim 1,

the dust collecting cup comprises a cup body (2) and a cup cover (1) movably pivoted to the cup body (2), and the dust collecting opening (11) is formed in the end part of the cup cover (1);

on bowl cover (1) and cup (2) with pin joint structure (6) relative one side, be provided with make bowl cover (1) lock in hasp structure (5) of cup (2), hasp structure (5) include: the sliding groove is arranged at the buckling position of the outer wall surfaces of the cup cover (1) and the cup body (2), and the button (52) is arranged in the sliding groove in a sliding way; when the button (52) is positioned at the end part of the sliding groove on the outer wall surface of the cup cover (1), the button (52) is in a locking state, and the cup cover (1) and the cup body (2) are kept buckled; when the key (52) is positioned at the end part of the sliding groove on the outer wall surface of the cup body (2), the key (52) is in an unlocked state, and the key (52) can be pressed down to open the cup cover (1).

4. The handy cleaner having the inner and outer air paths as set forth in claim 3,

a valve plate capable of being opened in a pivoting mode is arranged in the cup cover (1) corresponding to the dust collection port (11), and when the portable dust collector is in a working state, the valve plate is in a state of opening the dust collection port (11) under the action of air flow; when the portable dust collector is in a non-working state, the valve plate is in a state of closing the dust collection port (11).

5. The handy cleaner having the inner and outer air paths as set forth in claim 3,

the pivoting structure (6) is provided with an elastic piece and a limiting bulge (61), when the cup cover (1) is released from a buckling state, the cup cover (1) is pivoted and opened under the action of the elastic piece, and the cup cover (1) is pivoted for 180 degrees and then is kept at the angle under the action of the limiting bulge (61).

6. The handy cleaner having the inner and outer air paths as set forth in claim 1,

the detachable connecting structure between the dust collecting cup and the cylinder body (3) is as follows:

the end part of the dust collecting cup connected with the barrel body (3) forms a first annular limiting step surface (21) and a first L-shaped clamping groove (23), and a clamping bulge (31) is correspondingly arranged on the inner wall of the barrel body (3);

the end part of the outer wall of the barrel body (3) is abutted against the first annular limiting step surface (21), and meanwhile, when the clamping protrusion (31) is positioned in the first L-shaped clamping groove (23), one of the dust collection cup and the barrel body (3) can be rotated to enable the clamping protrusion (31) to slide into the first L-shaped clamping groove (23), so that the connection of the dust collection cup and the barrel body (3) is completed.

7. The handy cleaner having the inner and outer air paths as set forth in claim 1,

the filter assembly includes: the device comprises a primary filter screen (71) which is approximately barrel-shaped and is provided with an open end (711), and a HEPA filter screen (72) which is detachably sleeved in the primary filter screen (71) through the open end (711); a semi-circular handle (721) is rotatably connected to the end face of the open end (711) of the filter assembly, the handle (721) engaging the end face of the open end (711) when the filter assembly is positioned in the dirt cup.

8. The handy cleaner having the inner and outer air paths as recited in claim 7,

HEPA filter screen (72) with the tip that primary filter screen (71) are connected is equipped with annular groove one (722), the upper end of annular groove one (722) is equipped with the protruding two (723) of block of the inner wall of connecting annular groove one (722) and outer wall, the outer wall of the opening end (711) of primary filter screen (71) corresponds and sets up L type block groove two (712).

9. The handy cleaner having the inner and outer air paths as set forth in claim 1,

and an NTC thermistor is correspondingly arranged for each battery.

10. The handy cleaner having the inner and outer air paths as set forth in claim 1,

barrel (3) tip still is provided with Type-C and charges mouthful (37).

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