CN212875620U

CN212875620U - Surface cleaning equipment and motor protective structure thereof

Info

Publication number: CN212875620U
Application number: CN202021891194.6U
Authority: CN
Inventors: 邱日居
Original assignee: Changzhou Xinqida Electric Co ltd
Current assignee: Changzhou Xinqida Electric Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-04-02
Anticipated expiration: 2030-09-02

Abstract

The utility model relates to the field of surface cleaning equipment, in particular to a motor protection structure which is used for the surface cleaning equipment and comprises a first cavity and a second cavity, wherein a motor is arranged in the second cavity; the disclosed device is provided with: the third chamber is communicated with the first chamber, an air draft impeller fixedly arranged on an output shaft of the motor is arranged in the third chamber, and a first air flow is formed by the rotation of the air draft impeller, is air obtained from the surface to be cleaned, enters the first chamber through the third chamber and is discharged; the first chamber and the third chamber are arranged at intervals from the second chamber so as to prevent the first air flow from entering the second chamber; wherein a second airflow is formed within the second chamber, the second airflow being air taken away from the surface to be cleaned which is used to cool the motor. The motor and the circuit board can be effectively prevented from being burnt out by water vapor while the target area is cleaned, and the heat of the motor can be effectively dissipated in work.

Description

Surface cleaning equipment and motor protective structure thereof

Technical Field

The utility model relates to a cleaning device field especially relates to a surface cleaning device and motor protective structure thereof.

Background

Surface cleaning apparatuses generally act on the surface of an object to be cleaned by means of a fan to generate a negative pressure that adsorbs particles such as dust, debris, etc. When in use, the surface of an object to be cleaned is often wet, and if the motor is exposed on an air duct for adsorption, the motor is often burnt out due to the entry of water vapor, so that the service life of surface cleaning equipment is influenced; therefore, those skilled in the art will have the motor separate from the sealed chamber to prevent moisture from entering the motor, but the motor with this mounting structure will burn out due to poor heat dissipation during use.

In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, and provide a surface cleaning equipment and motor protective structure thereof.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a motor protective structure for a surface cleaning apparatus comprises a first chamber and a second chamber, wherein a motor is arranged in the second chamber; the disclosed device is provided with: the third chamber is communicated with the first chamber, an air draft impeller fixedly arranged on an output shaft of the motor is arranged in the third chamber, and a first air flow is formed by the rotation of the air draft impeller, is air obtained from the surface to be cleaned, enters the first chamber through the third chamber and is discharged; the first chamber and the third chamber are arranged at intervals from the second chamber so as to prevent the first air flow from entering the second chamber; wherein a second airflow is formed within the second chamber, the second airflow being air taken away from the surface to be cleaned which is used to cool the motor.

Further, the second chamber is communicated with the third chamber through at least one connecting air channel, negative pressure formed by rotation of the air draft impeller is used, and the second air flow enters the third chamber through the connecting air channel.

Further, the communication duct passes through the first chamber by means of an isolation duct.

Further, the first chamber is disposed at an outer periphery of the second chamber.

Further, an air guiding and exhausting impeller blade is arranged at the joint of the first chamber and the third chamber.

Further, a cooling impeller is included for directing air flow into the second chamber.

Furthermore, the cooling impeller is fixedly arranged on an output shaft of the motor.

Further, the second chamber is communicated with the outside through an air duct for sucking or discharging the second air flow.

Further, a control circuit board for controlling the operation of the motor is further installed in the second chamber, and the second air flow is configured to cool the control circuit board and the motor.

The utility model discloses still relate to a surface cleaning equipment, including the motor of driving air treating clean surface disturbance, the motor disposes aforementioned motor protective structure.

Owing to adopted above technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a surface cleaning device, the effective moist air enters into the second chamber equipped with the motor, namely effectively prevents the motor from being burnt out because of the invasion of the moist air;

furthermore, the utility model provides a motor independently is provided with the cooling impeller coaxial with the convulsions impeller, makes the utility model discloses a surface cleaning equipment can not burn out because of the motor high temperature when using.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

FIG. 1 is a schematic diagram of the general structure of the first embodiment;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic gas flow diagram of example 1;

FIG. 5 is a structural sectional view of embodiment 2;

FIG. 6 is an exploded view of the structure of example 2;

FIG. 7 is a schematic gas flow diagram of example 2.

Reference numerals:

1. an outer housing; 11. an upper cover 11; 12. an upper shell; 13. a lower case; 14. isolating the pipeline; 15. the air duct is communicated; 2. an inner housing; 3. a control circuit board; 4. a mounting frame; 5. a motor; 6. cooling the impeller; 7. an air draft impeller; K1. a first opening; K2. an adsorption port; s1, a first chamber; s2, a second chamber; s3, a third chamber; l1. a first gas flow; l2. second gas flow.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described changes, and are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

referring to fig. 1 to 4, the present invention provides a surface cleaning apparatus, which is provided with a motor 5 protection structure inside for a surface cleaning apparatus, such as a dust suction apparatus; the protective structure encloses a first chamber S1 and a second chamber S2, the second chamber S2 is provided with the motor 5; the disclosed device is provided with: a third chamber S3 communicated with the first chamber S1, an air suction impeller 7 fixedly mounted on the output shaft of the motor 5 is arranged in the third chamber S3, and the air suction impeller 7 rotates to form a first air flow L1, wherein the first air flow L1 is air obtained from the surface to be cleaned, and the air enters the first chamber S1 through the third chamber S3 and is discharged; the first chamber S1 and the third chamber S3 are both arranged at a distance from the second chamber S2 to prevent the first airflow L1 from entering the second chamber S2; wherein a second air flow L2 is formed in the second chamber S2, the second air flow L2 being air taken away from the surface to be cleaned, which is used to cool the motor 5.

It should be noted that the first air flow L1 is formed on the surface to be cleaned, and may have more moisture, dust and particulate matters according to the condition of the surface to be cleaned; in the prior art, the motor 5 is often exposed to the first airflow L1, thereby affecting the service life of the motor 5. The second air flow L2 for cooling the motor 5 in this embodiment is far from the surface to be cleaned, and is dry and clean relative to the first air flow L1.

As shown in fig. 2 and 3, the protective structure of the motor 5 in this example includes a housing having two layers including an outer housing 1 located outside and an inner housing 2 located inside, the outer housing 1 including an upper housing 12 and a lower housing 13 to which the upper housing 12 can be fixed; a second chamber S2 is provided in the inner housing 2, and a first chamber S1 and a third chamber S3 are formed between the inner wall of the outer housing 1 and the outer wall of the inner housing 2. In this embodiment, the connection between the first chamber S1 and the third chamber S3 is provided with wind-guiding vanes, so that the first air flow L1 can smoothly enter the first chamber S1 from the third chamber S3, and turbulent flow is prevented from being formed between the third chamber S3 and the first chamber S1. In addition, the housing in this embodiment further includes an upper cover 11, the upper cover 11 is disposed above the inner housing 2 and the outer housing 1, and the first opening K1 is disposed at the top of the upper cover 11 to receive the drying air source.

The second chamber S2 is provided with a first opening K1 for dry gas to enter, the second chamber S2 is communicated with the third chamber S3 through at least one communicating duct 15, and the communicating duct 15 includes a separation duct 14 passing through the first chamber S1 to enter the third chamber S3; by the negative pressure generated by the rotation of the suction impeller 7, the second airflow L2 enters the second chamber S2 through the first opening K1 and enters the third chamber S3 through the communicating air duct 15, and enters the first chamber S1 along with the first airflow L1 to be discharged. In this embodiment, the number of the communicating air ducts 15 is 1, and in another embodiment, 2 or more communicating air ducts 15 may be disposed between the second chamber S2 and the third chamber S3.

It should be noted that, in this embodiment, the communication air duct 15 is a duct arrangement communicated with the isolation duct 14; in another embodiment, the communicating air duct 15 may also be a closed gap, for example, a gap between the outer casing 1 and the casing of the cleaning device, and the second air flow L2 in the second chamber S2 may enter the third chamber S3 through the communicating air duct 15.

Wherein, an adsorption port K2 for the first air flow L1 to enter is arranged on the third chamber S3; the motor 5 is arranged in the second chamber S2, and the output shaft of the motor passes through the bottom of the inner shell 2 to enter the third chamber S3 and is fixedly provided with an air draft impeller 7. When the motor 5 is rotated to drive the suction impeller 7 to rotate, the surface to be cleaned forms a first air flow L1, which first air flow L1 enters the third chamber S3 through the adsorption port K2. In the embodiment, the first chamber S1 is disposed at the periphery of the second chamber S2, and the first air flow L1 entering the first chamber S1 is discharged from the side of the first chamber S1.

As shown in fig. 2, a control circuit board 3 for controlling the operation of the motor 5 is further installed in the second chamber S2, and the second air flow L2 is configured to cool the control circuit board and the motor 5. The control circuit board 3 is arranged on the top and located on an entering path of the second air flow L2, and when the second air flow L2 enters the second chamber S2, the control circuit board 3 and the motor 5 can be sequentially cooled by air cooling, so that the service lives of the control circuit board 3 and the motor 5 are prolonged. The motor 5 is fixed in the second chamber S2 through the mounting frame 4; the second chamber S2 is further provided with a control circuit board 3, and the control circuit board 3 is fixed on the mounting rack 4 in a plug-in mode. The mounting bracket 4 is provided with a connection unit so that the control circuit board 3 is electrically connected to the motor 5. And a power supply unit is also arranged on the mounting rack 4 to provide energy for the motor 5 and the control circuit board 3. In addition, the mounting rack 4 is configured to have a structure through which the second air flow L2 can flow so as to ensure the exchange rate of the air in the second chamber S2.

It should be further noted that the mounting bracket 4 is fixedly arranged on the inner casing 2 through bolts, and the motor 5 and the control circuit board 3 are both electrically connected with the mounting bracket 4, so that the motor 5 can be controlled by the control circuit board 3 to work.

Example two:

as shown in fig. 5 to 7, the structure of the present embodiment is substantially the same as that of the first embodiment, except that a cooling impeller 6 for guiding air to flow into the second chamber S2 is further disposed in the second chamber S2 in the present embodiment, and the cooling impeller 6 is fixed on the output shaft of the motor 5, so that the cooling impeller 6 can be synchronously driven to work while the cleaning device cleans the surface to be cleaned, thereby preventing the motor 5 and the control circuit board 3 from overheating.

It should be noted that the second chamber S2 is communicated with the outside through an air duct 15 for sucking or discharging the second air flow L2. When the cleaning device is operated, the motor 5 drives the cooling impeller 6 to rotate so that the second air flow L2 enters the second chamber S2 and is discharged to the outside.

In this embodiment, the second air flow L2 enters the second chamber S2 from the first opening K1 and is exhausted to the outside through the communicating air duct 15; in another embodiment, the second air flow L2 may also enter the second chamber S2 from the communicating duct 15 and be discharged to the outside through the first opening K1.

Example three:

the structure of this embodiment is substantially the same as that of the second embodiment, except that the communication duct 15 passes through the first chamber S1 via the isolation duct 14.

Further, a screen is provided on the first opening K1 in this example.

The working principle of the utility model is as follows:

referring to fig. 4 and 7, when the target area needs to be cleaned, the control circuit board 3 controls the motor 5 to rotate, the suction impeller 7 disposed in the third chamber S3 rotates to form a first airflow L1 for adsorbing dirt on the surface to be cleaned, and the first airflow L1 enters the first chamber S1 through the third chamber S3 and the air guide blades and is discharged; a second air flow L2 for cooling the motor 5 and the control circuit board 3 is formed in the second chamber S2, and the second air flow L2 cools both and then discharges them out of the second chamber S2; since the gas in the third chamber S3 and the first chamber S1 does not enter the second chamber S2, the motor 5 and the control circuit board 3 are effectively prevented from being burned.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A motor protective structure for a surface cleaning apparatus comprises a first chamber and a second chamber, wherein a motor is arranged in the second chamber; the disclosed device is characterized by being provided with:

the third chamber is communicated with the first chamber, an air draft impeller fixedly arranged on an output shaft of the motor is arranged in the third chamber, and a first air flow is formed by the rotation of the air draft impeller, is air obtained from the surface to be cleaned, enters the first chamber through the third chamber and is discharged;

the first chamber and the third chamber are arranged at intervals from the second chamber so as to prevent the first air flow from entering the second chamber;

wherein a second airflow is formed within the second chamber, the second airflow being air taken away from the surface to be cleaned which is used to cool the motor.

2. The motor protection structure of claim 1, wherein the second chamber is communicated with the third chamber through at least one connecting air duct, and the second air flow enters the third chamber through the connecting air duct by means of negative pressure generated by rotation of the air draft impeller.

3. The motor protection structure of claim 2, wherein the communication duct passes through the first chamber via an isolation duct.

4. A motor guard structure according to claim 1, 2 or 3 wherein the first chamber is disposed at the periphery of the second chamber.

5. The motor guard structure of claim 1 wherein the junction of the first and third chambers is provided with air-guiding impeller blades.

6. The motor guard structure according to claim 1, further comprising a cooling impeller for directing air flow into the second chamber.

7. The motor protection structure according to claim 6, wherein the cooling impeller is fixedly mounted on the output shaft of the motor.

8. The motor protection structure according to claim 1, 6 or 7, wherein the second chamber communicates with the outside through a ventilation duct for sucking or discharging the second air flow.

9. The motor protection structure of claim 8, wherein the communication duct passes through the first chamber via an isolation duct.

10. The motor protection structure of claim 1, wherein a control circuit board for controlling the operation of the motor is further installed in the second chamber, and the second air flow is configured to cool the control circuit board and the motor.

11. A surface cleaning apparatus comprising a motor for driving air turbulence over a surface to be cleaned, characterised in that the motor is provided with a motor guard structure as claimed in any one of claims 1 to 10.