CN210977895U

CN210977895U - Brushless water pump for small household appliances

Info

Publication number: CN210977895U
Application number: CN201921843414.5U
Authority: CN
Inventors: 赵海杰; 潘俊; 龙小杰
Original assignee: Zhejiang Dawei Electronic Co Ltd
Current assignee: Zhejiang Dawei Electronic Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-10
Anticipated expiration: 2029-10-30

Abstract

The utility model provides a brushless water pump of small household appliances, including casing and rotor, the casing including crossing water cavity and holding chamber, rotor one end insert and establish in the holding chamber, be formed with clearance between rotor and the holding chamber, the rotor is provided with a plurality of guide member that are arranged in clearance, the one end of guide member extends to in crossing the water cavity, and guide member is the spiral, and guide member can be during the water cavity is crossed with fluid and impurity direction in the clearance when rotating along with the rotor. Not enough to prior art, the utility model provides a noise still less, wearing and tearing are little, not fragile little household electrical appliances brushless water pump.

Description

Brushless water pump for small household appliances

Technical Field

The utility model relates to a brushless water pump of small household electrical appliances.

Background

The brushless water pump is a device for conveying liquid or pressurizing liquid, is commonly used in the field of small household appliances, and along with the improvement of living standard of people, the requirements of people on the noise generated by the small household appliances and the service life of the small household appliances are higher and higher, for example, Chinese utility model (CN201821444023.1) discloses a mute brushless water pump, which comprises a stator motor, a shell and a rotor, wherein the shell is provided with a first inner cavity and a second inner cavity, the stator motor is arranged in the second inner cavity, the first inner cavity comprises an accommodating cavity extending to the inner ring of the stator motor and a water passing cavity, the rotor is inserted in the accommodating cavity, the rotor is integrally provided with an impeller positioned in the water passing cavity, the water passing cavity is provided with a water inlet and a water outlet communicated with the outside, the utility model adopts the technical scheme that the rotor shell is formed by ferrite material through one-time injection molding, the injection molding frequency is reduced, and the concentricity of the rotor axis is ensured, so that the purposes of stable rotation, low noise and abrasion and longer service life are achieved.

However, the brushless water pump of prior art's little household electrical appliances, because when the brushless water pump of little household electrical appliances operates, the holding chamber of rotor and confession its holding is relative pivoted, consequently can set up running clearance between the inner wall in rotor and holding chamber, and liquid is when passing through the water cavity by the impeller drive, part liquid can take impurity along with liquid inflow to the holding chamber, and along with the increase of product running time, impurity in the running clearance also can pile up, produce the noise when leading to the product to use easily, increase the wearing and tearing of rotor, when impurity in running clearance piles up the certain degree, more can lead to the unable smooth rotation of rotor, lead to the product to damage.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a noise still less, wearing and tearing are little, not fragile little household electrical appliances brushless water pump.

In order to realize the above object, the utility model provides a brushless water pump of small household appliances, including casing and rotor, the casing including crossing water cavity and holding chamber, rotor one end insert and establish in the holding chamber, be formed with the turn-gap between rotor and the holding chamber, the rotor is provided with a plurality of guide member that are arranged in the turn-gap, guide member's one end extends to in crossing the water cavity, and guide member is the spiral, and guide member can be during following the rotor rotation with fluid and impurity direction in the turn-gap crossing the water cavity.

The technical scheme has the advantages that: compared with the prior art, there is impurity to pile up in running clearance, lead to the noise, increase the wearing and tearing of rotor and the condition that the product damaged, among this technical scheme, be spiral shape guide member through setting up among running clearance at the rotor, and can lead to the water cavity with fluid and impurity among the running clearance when rotating along with the rotor, make the rotor at the moving in-process, can clear up the impurity in the running clearance constantly, thereby can avoid piling up because impurity is in running clearance, make this technical scheme's brushless water pump noise little, rotor wearing and tearing are little, and not fragile.

The utility model discloses can further set up to: the other end of the guide component faces the direction of the accommodating cavity and extends around along the direction opposite to the rotation direction of the rotor.

Through further setting up, the orientation cavity direction and along the orientation that rotates opposite direction with the rotor and encircle the guide member that extends when rotating along with the rotor, guide member can drive the impurity that suspends in liquid rotatory with the slew velocity that is slower than the rotor, and guide member can exert the power of a orientation cavity direction to impurity, make impurity move towards rotor one end direction, until breaking away from the holding chamber, thereby avoided piling up in the running clearance impurity, avoid because noise and the wearing and tearing to the rotor that impurity and rotor or holding intracavity wall friction take place, the life of extension product.

The utility model discloses can further set up to: the plurality of guide members are circumferentially and uniformly distributed on the outer circumferential surface of the rotor.

Through further arrangement, the guide members are circumferentially and uniformly distributed on the outer circumferential surface of the rotor, on one hand, the guide members arranged on the rotor inevitably receive reaction force when guiding liquid and impurities in the rotating clearance to the water passing cavity, and the guide members are circumferentially and uniformly distributed on the outer circumferential surface of the rotor to ensure uniform stress when the rotor rotates, and on the other hand, the guide members are uniformly distributed to more uniformly clean the impurities in the rotating clearance.

The utility model discloses can further set up to: the guide member is composed of a spiral groove arranged on the outer circumferential surface of the rotor, and one end of the spiral groove extends to the end face of one end of the rotor and is provided with a sewage discharge outlet.

By further arrangement, the guide member is formed by the spiral groove, the radius of the guide member is not larger than that of the rotor, the guide member is prevented from protruding out of the outer circumferential surface of the rotor, abrasion caused by the guide member and the reaction force of fluid are avoided, and the arrangement of the sewage draining port is convenient for discharging impurities.

The utility model discloses can further set up to: the other end of the spiral groove extends to the end face of the other end of the rotor and is provided with an opening.

Through further setting up, be convenient for clear up when brushless water pump is idle, deposit in the impurity of storage tank bottom.

The utility model discloses can further set up to: the section of the obtained spiral groove is arc-shaped.

Through further setting up, the helicla flute cross-section is the arc, can guarantee bigger inner area, further strengthens the blowdown ability.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 according to an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram 1 of a rotor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram 2 of a rotor according to an embodiment of the present invention.

Detailed Description

The utility model relates to an embodiment of small household appliances brushless water pump is shown in fig. 1-5: including casing 1, stator motor 2 and rotor 3, casing 1 on be provided with water inlet 11 and delivery port 12, and be formed with transmission chamber 13, cross water cavity 14 and holding chamber 15 in the casing 1, stator motor 2 set up in transmission chamber 13, holding chamber 15 set up the inner ring department at

stator motor

2, 3 one end of rotor insert and establish in holding chamber 15, the other end of rotor 3 extends to and is provided with impeller 31 in crossing water cavity 14 and an organic whole, is formed with rotation gap 151 between rotor 3 and the holding chamber 15, rotor 3 is provided with a plurality of guide member 32 that are arranged in the rotation gap, the one end of guide member 32 extends to in crossing water cavity 14, and guide member 32 is the spiral, and guide member 32 can lead in the rotation gap fluid and its impurity in crossing water cavity 14 when rotating along with the rotor. The other end of the guide member 32 extends circumferentially toward the accommodation chamber 15 and in the direction opposite to the rotation of the rotor 3. The plurality of guide members 32 are circumferentially and uniformly distributed on the outer circumferential surface of the rotor 3. The guide member 32 is formed of a spiral groove 33 provided on the outer circumferential surface of the rotor, and one end of the spiral groove extends to the end surface of one end of the rotor and is formed with a drain port 331. In the present embodiment, the inner wall of the spiral groove 33 on the side close to the bottom of the container is the guide member 32. The other end of the spiral groove 33 extends to the end face of the other end of the rotor 3 and is formed with an opening 332. The section of the obtained spiral groove 33 is arc-shaped.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a brushless water pump of little household electrical appliances, including casing and rotor, the casing including crossing water cavity and holding chamber, rotor one end insert and establish in the holding chamber, be formed with turning clearance, its characterized in that between rotor and the holding chamber: the rotor is provided with a plurality of guide members positioned in the rotating gap, one end of each guide member extends into the water passing cavity, each guide member is spiral, and when the guide members rotate along with the rotor, fluid and impurities in the rotating gap can be guided into the water passing cavity.

2. The brushless water pump of small household appliances of claim 1, characterized in that: the other end of the guide component faces the direction of the accommodating cavity and extends around along the direction opposite to the rotation direction of the rotor.

3. The small household appliance brushless water pump according to claim 1 or 2, characterized in that: the plurality of guide members are circumferentially and uniformly distributed on the outer circumferential surface of the rotor.

4. The small household appliance brushless water pump according to claim 1 or 2, characterized in that: the guide member is composed of a spiral groove arranged on the outer circumferential surface of the rotor, and one end of the spiral groove extends to the end face of one end of the rotor and is provided with a sewage discharge outlet.

5. The brushless water pump of small household appliances of claim 4, characterized in that: the other end of the spiral groove extends to the end face of the other end of the rotor and is provided with an opening.

6. The brushless water pump of small household appliances of claim 5, characterized in that: the section of the spiral groove is arc-shaped.