CN213628092U

CN213628092U - High efficiency spiral case formula quick-witted fan of sweeping floor

Info

Publication number: CN213628092U
Application number: CN202022509451.1U
Authority: CN
Inventors: 李冰; 张丽娜
Original assignee: Wuxi Convert Electrical Machinery Co ltd
Current assignee: Wuxi Convert Electrical Machinery Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-06
Anticipated expiration: 2030-11-03

Abstract

The utility model discloses a high-efficiency volute type sweeper fan, which comprises a movable impeller which is relatively rotatably installed in a volute inner cavity, the movable impeller is in driving installation connection with a sweeper motor, the volute is provided with a volute air inlet port which is correspondingly matched with an air inlet of the movable impeller, the periphery of the volute air inlet port extends towards the inside of the volute inner cavity to form an air inlet protection cavity, the air inlet of the movable impeller is positioned in the air inlet protection cavity, and the first distance between the air inlet and the air inlet protection cavity in the vertical direction is not less than 0.1 mm; the utility model discloses a structural design in air inlet protection chamber effectively improves the work efficiency of spiral case formula quick-witted fan of sweeping the floor.

Description

High efficiency spiral case formula quick-witted fan of sweeping floor

Technical Field

The utility model belongs to spiral case formula sweeper fan field, concretely relates to high efficiency spiral case formula sweeper fan.

Background

With the continuous development of the technology level and the improvement of the living standard of people, the sweeper (including sweeping robot) with the automatic cleaning function is widely applied. The volute type sweeper fan is used as a core structure of the sweeper to realize the suction function, and the performance of the volute type sweeper fan also determines the cleaning technical level of the sweeper.

Specifically, a sweeper fan with a volute-shaped air duct (generally called a volute type sweeper fan) is used as a main sweeper fan structure and comprises a volute, a movable impeller, a motor and the like, and a controller of the motor is connected in a protective installation mode through an installation plate located on the outer side of the motor. However, the existing sweeper motor with the volute air duct always has the problem of relatively poor working efficiency of the fan.

The applicant therefore wishes to seek technical solutions that improve on the above technical problem.

Disclosure of Invention

In view of this, the utility model aims at providing a high efficiency spiral case formula quick-witted fan of sweeping floor, through the structural design in air inlet protection chamber, effectively improve the work efficiency of spiral case formula quick-witted fan of sweeping floor.

The utility model adopts the technical scheme as follows:

the utility model provides a high efficiency spiral case formula quick-witted fan of sweeping floor, includes the movable vane wheel that installs at spiral case inner chamber relatively rotatoryly, movable vane wheel and the quick-witted motor drive erection joint of sweeping floor, the spiral case is equipped with and corresponds complex spiral case air inlet port with the air intake of movable vane wheel, spiral case air inlet port periphery forms air inlet protection chamber to spiral case inner chamber inside extension, the air intake of movable vane wheel is located air inlet protection intracavity, and the air intake is not less than 0.1mm with the ascending first interval of air inlet protection chamber from top to bottom.

Preferably, the first pitch ranges from 0.4 to 1.2 mm.

Preferably, the height of the air inlet protection cavity is 1.5-4 times of the first distance.

Preferably, the second distance between the bottom of the movable impeller and the inner wall of the volute in the vertical direction is not less than 0.6 mm.

Preferably, the second pitch is in the range of 1-2 mm.

Preferably, the volute comprises an upper volute and a lower volute, and the upper volute and the lower volute are installed and connected to form the inner cavity of the volute; the upper volute is provided with a volute air inlet port; and a second distance between the inner wall of the lower volute and the bottom of the movable impeller in the vertical direction is not less than 0.6 mm.

Preferably, the sweeper motor is an outer rotor direct current brushless motor and comprises a rotor in driving connection with the movable impeller, a stator in magnetic coupling with the rotor, and a controller electrically connected with the stator.

Preferably, the stator is connected with the volute through a mounting plate, and the controller is located between the stator and the mounting plate and fixedly connected with the mounting plate.

Preferably, the inner periphery of the stator is provided with a limiting mounting sleeve, the limiting mounting sleeve can be sleeved on the outer periphery of the rotor shaft in a relatively rotating mode, and the mounting plate is fixedly pressed on the outer periphery of the limiting mounting sleeve.

Preferably, an insulating mounting plate is arranged between the mounting plate and the circuit board and used for realizing insulating contact between the mounting plate and the circuit board.

The utility model creatively provides a structure that an air inlet protection cavity is arranged at an air inlet port of a volute, an air inlet of a movable impeller is arranged in the air inlet protection cavity, and the space between the movable impeller and the air inlet protection cavity in the up-and-down direction is ensured at the same time, and the structural design can effectively improve the working efficiency of a fan of the volute type sweeper through simulation test verification; and the distance parameter setting is further preferably carried out on the bottom of the movable impeller and the inner wall of the volute, so that the working efficiency of the fan can be further improved.

Drawings

Fig. 1 is a schematic structural view of a fan of a lower volute type sweeper according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 after being rotated by a certain angle;

fig. 3 is an explosion structure diagram of the blower of the lower volute type sweeper of the embodiment of the invention;

FIG. 4 is a sectional view of a lower volute type sweeper blower according to an embodiment of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

fig. 6 is an enlarged view of the structure at B in fig. 4.

Detailed Description

The embodiment of the utility model discloses high efficiency spiral case formula quick-witted fan of sweeping floor, but install the movable vane at spiral case inner chamber including relative rotation, movable vane and the quick-witted motor drive erection joint of sweeping floor, the spiral case is equipped with and corresponds complex spiral case air inlet port with the air intake of movable vane, and spiral case air inlet port periphery forms the air inlet protection chamber to spiral case inner chamber inside extension, and the air intake of movable vane is located air inlet protection intracavity, and the air intake is not less than 0.1mm with the ascending first interval of air inlet protection chamber from top to bottom.

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Referring to fig. 1, 2, 3 and 4, a high efficiency volute type sweeper fan 1 includes a movable impeller 20 relatively rotatably mounted in a volute cavity 11, the movable impeller 20 is connected with a sweeper motor 2 in a driving manner; referring to fig. 5 and 6, the volute 10 is provided with a volute air inlet port 12 correspondingly matched with the air inlet 21 of the movable impeller 20, the outer periphery of the volute air inlet port 12 extends towards the inner part of the inner cavity of the volute to form an air inlet protection chamber 13, the air inlet 21 of the movable impeller 20 is located in the air inlet protection chamber 13, and a first distance L1 between the air inlet 21 and the air inlet protection chamber 13 in the vertical direction is not less than 0.1 mm; the height H1 of the air inlet protection cavity 13 is 1.5-4 times of the first distance L1, and the second distance L2 between the bottom of the movable impeller 20 and the inner wall of the volute in the vertical direction is not less than 0.6 mm; particularly preferably, in the present embodiment, the first distance ranges from 0.4 mm to 1.2mm, and the height H1 of the air inlet protection chamber 13 is 1.5 times to 2.5 times the first distance L1;

preferably, in the present embodiment, the volute 10 includes an upper volute 10a and a lower volute 10b, and the upper volute 10a and the lower volute 10b are installed and connected to form a volute inner cavity 11; the upper volute 10a is provided with a volute air inlet port 12; a second distance L2 between the inner wall of the lower volute and the bottom of the movable impeller 20 in the up-down direction is not less than 0.6mm, and particularly preferably, the range of the second distance L2 is 1-2 mm;

the embodiment creatively provides a structure that the air inlet protection cavity 13 is arranged at the volute air inlet port 12, the air inlet 21 of the movable impeller 20 is arranged in the air inlet protection cavity 13, a first interval L1 between the movable impeller and the air inlet protection cavity 13 in the up-down direction is ensured, a second interval L2 is arranged between the bottom of the movable impeller 20 and the inner wall of the lower volute, and the structural design is verified through simulation test to effectively improve the working efficiency of the volute type sweeper fan 1.

Preferably, in the present embodiment, the sweeper motor 2 is an outer rotor dc brushless motor, and includes a rotor 30 drivingly connected to the movable impeller 20, a stator 40 magnetically coupled to the rotor 30, and a controller 50 electrically connected to the stator 40, wherein the outer rotor 32 is fixedly mounted to the movable impeller 20 via a rotor shaft 31; an insulating mounting plate 52 is arranged between the mounting plate 60 and the circuit board 51 of the controller 50 and used for realizing the insulating mounting of the mounting plate 60; further preferably, in the present embodiment, the inner periphery of the stator 40 is provided with a limiting mounting sleeve 41, the limiting mounting sleeve 41 is sleeved on the outer periphery of the rotor shaft 31 through a bearing in a relatively rotatable manner, and the mounting plate 60 is fixedly pressed on the outer periphery of the limiting mounting sleeve 41, specifically, in the present embodiment, the bottom of the limiting mounting sleeve 41 is in a sealed shape, so as to prevent external impurities from entering the motor 2 of the sweeper; the mounting plate 60 is provided with a press-fitting hole 61 positioned on the periphery of the limiting mounting sleeve 41, wherein the press-fitting hole 61 is provided with a limiting boss 61a extending inwards, the limiting boss 61a is fixedly pressed on the periphery of the limiting mounting sleeve 41, and the stable mounting and connecting effect between the stator 40 and the mounting plate 60 is realized on the basis of keeping the mounting structure compact;

in the present embodiment, the mounting plate 60 and the circuit board 51 are provided with at least 1 riveting through hole 71 respectively corresponding to the riveting fit, so as to meet the grounding requirement of the controller 50 through riveting; preferably, the riveting through hole 71 on the circuit board 51 is located at the outer side of the outer rotor 32, for preventing or reducing the entry of external impurities into the interior of the motor through the riveting through hole 71; when an inner rotor motor is adopted in other embodiments, the riveting through hole 71 can be arranged on the outer side of the stator, and similar technical effects can be obtained;

particularly preferably, in the present embodiment, the number of the riveting through holes 71 on the mounting plate 60 is 3, and the riveting through holes are distributed in a triangular shape, so that a stable riveting effect between the mounting plate 60 and the circuit board 51 can be achieved; after riveting is completed, the mounting plate 60 and the lower volute 10b are mounted and connected through screw fasteners 72, wherein mounting bosses 73 correspondingly matched with the screw fasteners 72 are arranged on the surface of the lower volute 10b, and particularly, preferably, the number of the screw fasteners 72 is 3, and the screw fasteners are also distributed in a triangular shape, so that a stable mounting effect between the mounting plate 60 and the lower volute 10b is ensured; in order to ensure the mounting strength of the lower scroll casing 10b, in the present embodiment, the reinforcing rib pieces 74 are provided on the outer periphery of each mounting boss 73, which can effectively improve the mounting strength of the lower scroll casing 10 b.

In the embodiment, when the controller 50 is installed, the controller 50 is placed between the stator 40 and the mounting plate 60, and meanwhile, the mounting plate 60 and the circuit board 51 of the controller 50 are riveted and installed, and then the mounting plate 60 and the lower volute 10b are installed and connected, so that the installation is convenient and compact, and the good grounding requirement of the controller 50 can be met; the embodiment also particularly preferably provides that the riveting through hole 71 is arranged outside the outer rotor 32, so that the risk of motor damage caused by external impurities entering the motor through the riveting through hole 71 can be effectively avoided or reduced; it is also particularly preferable to provide the rivet through-holes 71 distributed in a triangular shape, so that a more stable mounting and connecting effect can be obtained.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high efficiency spiral case formula quick-witted fan of sweeping floor, includes the movable vane wheel that installs at spiral case inner chamber relatively rotatoryly, movable vane wheel and quick-witted motor drive erection joint of sweeping floor, its characterized in that, the spiral case is equipped with and corresponds complex spiral case air inlet port with the air intake of movable vane wheel, spiral case air inlet port periphery forms air inlet protection chamber to spiral case inner chamber inside extension, the air intake of movable vane wheel is located air inlet protection intracavity, and the air intake is not less than 0.1mm with the ascending first interval of air inlet protection chamber from top to bottom.

2. The high efficiency volute sweeper fan of claim 1, wherein the first pitch range is 0.4-1.2 mm.

3. The high efficiency volute sweeper fan of claim 1, wherein the height of the inlet air plenum is 1.5-4 times the first spacing.

4. The high efficiency volute sweeper fan of claim 1, wherein a second distance between the bottom of the movable impeller and the inner wall of the volute in the up-down direction is not less than 0.6 mm.

5. The high efficiency volute sweeper fan of claim 4, wherein the second pitch range is 1-2 mm.

6. The high efficiency volute sweeper fan of claim 1, wherein the volute comprises an upper volute and a lower volute, the upper volute and the lower volute being mounted in connection and forming the volute cavity; the upper volute is provided with a volute air inlet port; and a second distance between the inner wall of the lower volute and the bottom of the movable impeller in the vertical direction is not less than 0.6 mm.

7. The blower of the volute type sweeper of claim 1, wherein the sweeper motor is an external rotor DC brushless motor including a rotor drivingly connected to the impeller, a stator magnetically coupled to the rotor, and a controller electrically connected to the stator.

8. The high efficiency volute sweeper blower of claim 7, wherein the stator is mounted to the volute by a mounting plate, and the controller is positioned between and fixedly mounted to the mounting plate.

9. The blower of the volute type sweeper of claim 8, wherein the stator has a limiting mounting sleeve on an inner periphery thereof, the limiting mounting sleeve being relatively rotatably fitted around an outer periphery of the rotor shaft, and the mounting plate is fixedly press-fitted around the outer periphery of the limiting mounting sleeve.

10. The high efficiency volute sweeper blower of claim 8, wherein an insulating mounting plate is disposed between the mounting plate and the circuit board for insulating contact between the mounting plate and the circuit board.