CN210949214U

CN210949214U - Small brushless direct-current variable-frequency centrifugal blower

Info

Publication number: CN210949214U
Application number: CN201921932794.XU
Authority: CN
Inventors: 衡强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-07
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a small brushless direct current variable frequency centrifugal blower, which comprises a volute and a driving motor, wherein the driving motor is arranged on the outer wall of the volute, an air inlet and an air outlet are arranged on the volute, a centrifugal wind wheel is arranged in the volute, and the centrifugal wind wheel is respectively communicated with the air inlet and the air outlet; the centrifugal fan comprises a centrifugal wind wheel, a driving motor, a volute and a heat dissipation fan blade, wherein the driving motor is provided with an output shaft, the volute is provided with a through hole matched with the output shaft to pass through, the output shaft passes through the through hole and then is detachably connected with the centrifugal wind wheel, the output shaft is also provided with the heat dissipation fan blade used for dissipating heat for the driving motor, and the heat dissipation fan blade is arranged between the volute and; the utility model discloses a rational in infrastructure has characteristics such as the amount of wind is big, small, practice thrift top of a kitchen range inner space, long service life and radiating effect are good, has good popularization prospect.

Description

Small brushless direct-current variable-frequency centrifugal blower

Technical Field

The utility model relates to an air-blower field, in particular to small-size brushless direct current frequency conversion centrifugal blower.

Background

The existing commercial blower is generally large in size and occupies more space in order to ensure air volume and air pressure, and how to balance the space and the air volume is a difficult problem in the field of blowers. In addition, the motor for driving the blower is obviously heated in the long-time use process, and can not be well radiated in places with higher temperature, such as kitchens, and the like, so that the motor can not work normally.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a small-size brushless direct current frequency conversion centrifugal blower to solve the not enough that exists among the prior art.

In order to solve the technical problem, the utility model discloses a technical scheme does: a small brushless direct current variable frequency centrifugal blower comprises a volute and a driving motor, wherein the driving motor is installed on the outer wall of the volute, an air inlet and an air outlet are formed in the volute, a centrifugal wind wheel is arranged in the volute, and the centrifugal wind wheel is respectively communicated with the air inlet and the air outlet; the centrifugal fan is characterized in that an output shaft is arranged on the driving motor, a through hole matched with the output shaft is formed in the volute, the output shaft penetrates through the through hole and then is detachably connected with the centrifugal wind wheel, and a heat dissipation fan blade used for dissipating heat of the driving motor is further arranged on the output shaft and is arranged between the volute and the driving motor.

As an improvement, the volute comprises an upper shell and a lower shell which is suitable for being detachably connected with the upper shell, the air inlet is formed in the center of the upper shell, the air outlet is formed in the end portions of the upper shell and the lower shell, the driving motor is installed on the outer wall of the lower shell, and a containing cavity for containing the centrifugal wind wheel to rotate is formed after the upper shell and the lower shell are assembled.

As an improvement, the outer diameter of the volute is 148-155 mm

As an improvement, a fixing plate for fixing the volute is arranged on the edge of the upper shell.

As an improvement, the driving motor is installed on the outer wall of the lower shell through a connecting component, the connecting component comprises a connecting plate and at least three fixing columns, the driving motor is fixedly connected to the bottom end face of the connecting plate through bolts, and the connecting plate is fixedly connected to the outer wall of the lower shell through the fixing columns.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a rational in infrastructure has characteristics such as the amount of wind is big, small, practice thrift top of a kitchen range inner space, long service life and radiating effect are good, has good popularization prospect.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural view of the top view angle of the present invention.

In the figure: the centrifugal fan comprises a volute 1, a driving brushless direct current motor 2, an air inlet 3, an air outlet 4, a centrifugal wind wheel 5, a connecting component 6, a through hole 10, an upper shell 11, a lower shell 12, an output shaft 20, radiating fan blades 21, a connecting plate 60, a fixing column 61, a fixing plate 110 and an outer diameter H.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 3, a small brushless dc variable frequency centrifugal blower includes a volute 1 and a driving dc motor 2, the driving dc motor 2 is installed on an outer wall of the volute 1, the volute 1 is provided with an air inlet 3 and an air outlet 4, a centrifugal wind wheel 5 is arranged in the volute 1, and the centrifugal wind wheel 5 is respectively communicated with the air inlet 3 and the air outlet 4. The centrifugal wind wheel 5 is driven by the driving motor 2 to rotate, air quantity is rapidly sucked through the air inlet 3, and the air is uniformly discharged from the air outlet 4 after being gathered by the volute 1, so that the function of blowing air is realized, and the centrifugal wind wheel is suitable for being matched with commercial cooking utensils or other equipment needing blowing air. Specifically, the external diameter H of spiral case 1 is 148 ~ 155mm, and in this embodiment, the external diameter H of spiral case 1 is preferred 150mm, consequently the utility model discloses an air-blower has characteristics such as small, saving top of a kitchen range inner space, and its installation is simple moreover, can save the material of installation. It is further emphasized here that the drive motor 2 is a brushless DC frequency conversion fan with model number HHN8640-DC310, and the parameters are: the electric cooker is produced by reference to GB5171-2002 'general technical requirement of low-power motors' and GB 12350 'safety requirement of low-power motors' in GB 12350-. In addition, the voltage output by the driving motor 2 is 24V, and the standard of power saving and environmental protection energy consumption is reached.

As shown in fig. 2, the driving motor 2 is provided with an output shaft 20 and electrically connected to the power switch, the volute 1 is provided with a through hole 10 adapted to the output shaft 20 to pass through, the output shaft 20 passes through the through hole 10 and then is detachably connected to the centrifugal wind wheel 5, in this embodiment, the centrifugal wind wheel 5 is installed on the end of the output shaft 20 by a bolt and nut connection manner, and the centrifugal wind wheel 5 can maintain the quality of the outlet air by periodical unpicking and washing, which should be understood by those skilled in the art. The output shaft 20 is further provided with a heat dissipation fan blade 21 for dissipating heat of the driving motor 2, the heat dissipation fan blade 21 is of a fin-shaped structure and is arranged between the volute 1 and the driving motor 2, and the heat dissipation fan blade 21 is designed into the fin-shaped structure so as to improve the heat dissipation effect, so that the driving motor 2 can keep a temperature below 50 ℃ during operation, and the normal working environment of the driving motor 2 is ensured.

Further, the volute casing 1 comprises an upper casing 11 and a lower casing 12 which is suitable for being detachably connected with the upper casing 11, the upper casing 11 is connected through a bolt and a nut, the air inlet 3 is arranged at the center of the upper casing 11, the air outlet 4 is jointly arranged at the end parts of the upper casing 11 and the lower casing 12, and the design can enable the wind direction to flow more smoothly and stably. Driving motor 2 installs on the outer wall of inferior valve 12, form after epitheca 11 and inferior valve 12 assemble and be used for holding centrifugal wind wheel 5 pivoted to hold the chamber, centrifugal wind wheel 5 absorbs external air from air intake 3 and holds the chamber in, will hold the air pressurization of intracavity under the effect of centrifugal wind wheel 5 continuous operation and discharge from air outlet 4 with higher speed, guarantee the utility model discloses a wind pressure. The utility model discloses it is exactly to adopt 5 rotatory centrifugal force that produce of centrifugal wind wheel, and the gaseous medium that makes the transport obtains outside transport after the pressure boost acceleration rate, realizes the air-blast. Specifically, the driving motor 2 is mounted on the outer wall of the lower shell 12 through a connecting member 6, the connecting member 6 includes a connecting plate 60 and at least two fixing posts 61, the driving motor 2 is fixedly connected on the bottom end face of the connecting plate 60 through bolts, and the connecting plate 60 is fixedly connected on the outer wall of the lower shell 12 through the fixing posts 61. In this embodiment, the fixing posts 61 are long-strip-shaped cylindrical structures, and the number of the fixing posts 61 is three, and the fixing posts are distributed in an equilateral triangle with the output shaft 20 as a center, so that the driving motor 2 can be stably fixed on the lower casing 12.

Further, a fixing plate 110 for fixing the scroll casing 1 is provided on an edge of the upper casing 11, so that the entire scroll casing 1 can be fixed at a designated position.

To sum up, the utility model discloses a rational in infrastructure has that the amount of wind is big, small, practice thrift top of a kitchen range inner space, long service life and radiating effect characteristics such as good, has good popularization prospect.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a small-size brushless direct current frequency conversion centrifugal blower which characterized in that: the device comprises a volute (1) and a driving brushless direct current motor (2), wherein the driving brushless direct current motor (2) is installed on the outer wall of the volute (1), an air inlet (3) and an air outlet (4) are formed in the volute (1), a centrifugal wind wheel (5) is arranged in the volute (1), and the centrifugal wind wheel (5) is respectively communicated with the air inlet (3) and the air outlet (4);

be equipped with output shaft (20) on drive brushless DC motor (2), be equipped with through-hole (10) that adaptation output shaft (20) pass through on spiral case (1), output shaft (20) pass through behind through-hole (10) and are connected with centrifugal wind wheel (5) detachably, still be equipped with on output shaft (20) and be used for driving radiating heat dissipation flabellum (21) of brushless DC motor (2), heat dissipation flabellum (21) are located between spiral case (1) and driving motor (2).

2. The small brushless dc variable frequency centrifugal blower according to claim 1, wherein: the volute casing (1) comprises an upper casing (11) and a lower casing (12) which is matched with the upper casing (11) in a detachable mode, the air inlet (3) is arranged at the center of the upper casing (11), the air outlet (4) is jointly arranged at the end portions of the upper casing (11) and the lower casing (12), the driving motor (2) is installed on the outer wall of the lower casing (12), and the upper casing (11) and the lower casing (12) are assembled to form a containing cavity used for containing the centrifugal wind wheel (5) in a rotating mode.

3. The small brushless dc variable frequency centrifugal blower according to claim 1, wherein: the outer diameter (H) of the volute (1) is 148-155 mm.

4. The small brushless dc variable frequency centrifugal blower according to claim 2, wherein: the edge of the upper shell (11) is provided with a fixing plate (110) for fixing the volute (1).

5. The miniature brushless DC variable frequency centrifugal blower according to claim 2 or 4, wherein: the driving brushless direct current motor (2) is installed on the outer wall of the lower shell (12) through a connecting component (6), the connecting component (6) comprises a connecting plate (60) and at least two fixing columns (61), the driving motor (2) is fixedly connected to the bottom end face of the connecting plate (60) through bolts, and the connecting plate (60) is fixedly connected to the outer wall of the lower shell (12) through the fixing columns (61).