CN110793080A - A new type of fan and range hood - Google Patents

Abstract

The present invention discloses a novel fan and a range hood, the novel fan comprises a volute and an impeller and a motor arranged therein, the motor drives the impeller to rotate, the volute is provided with an air inlet, and further comprises a filter and a speed increaser, the filter is arranged on the air inlet, the input shaft of the speed increaser is connected to the output shaft of the motor, and the output shaft of the speed increaser is connected to the filter. The present invention adds a filter and a speed increaser to the fan, the filter shares a motor with the impeller, the structure is simple, and the oil smoke can be further separated, in addition, the speed increaser increases the rotation speed of the filter, which can more effectively improve the oil separation rate and reduce air pollution.

Description

A new type of fan and range hood

technical field

The invention relates to the technical field of range hoods, in particular to a novel fan and range hood.

Background technique

In recent years, with the development of Chinese cities, the problem of air pollution has become more and more serious. According to research data from relevant institutions, a major source of air pollution comes from cooking fumes. The household kitchen exhaust equipment is the common range hood on the market. Generally, the oil fume is separated through the filter screen on the smoking port. There is a certain difference between the oil separation degree, one of the emission performance indicators, and the exhaust oil fume concentration. It does not have such a high purification effect. In fact, a range hood that meets the standard will still emit a large part of the fumes.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention discloses a novel fan, which can overcome the above defects, improve the oil separation rate, and purify the oil fume discharged from the outside; the present invention also discloses a range hood using the fan.

The technical scheme adopted by the present invention is:

A new type of fan, comprising a volute, an impeller and a motor arranged inside the volute, the motor drives the impeller to rotate, the volute is provided with an air inlet, and further comprises a filter screen and a speed increaser. The filter screen is arranged on the air inlet, the input shaft of the speed increaser is connected with the output shaft of the motor, and the output shaft of the speed increaser is connected with the filter screen.

In the above technical solution, the rotational speed of the output shaft of the speed increaser is 1.2-6 times the rotational speed of the output shaft of the motor.

In the above technical solution, an air inlet ring is further included, the air inlet ring is covered on the air inlet and fixed on the volute, and the filter screen is arranged on the air inlet ring. outside.

In the above technical solution, the speed increaser is fixed on the air inlet ring, and the output shaft of the speed increaser passes through the air inlet ring and is connected to the filter screen.

In the above technical solution, the air inlet ring is provided with a support frame for fixing the speed increaser, and the middle of the support frame is provided with a through hole for the output shaft of the speed increaser to pass through.

In the above technical solution, the filter screen includes a central seat, a plurality of cylindrical strips and a plurality of rings; the plurality of cylindrical strips are radially arranged to the outside along the radial direction of the central seat ; A plurality of said circular rings are arranged outside the shown central seat and are concentric with said central seat; said cylindrical strips are cross-connected with said circular ring.

In the above technical solution, the output shaft of the speed increaser is provided with a clamping strip, and the central seat is provided with a clamping slot matched with the clamping strip.

A range hood includes the above-mentioned novel fan, an oil guide and an oil collection box, wherein the oil guide is arranged below the volute and communicated with the oil collection box.

After the above technical solution is adopted, the present invention adds a filter screen and a speed increaser on the fan, the filter screen shares a motor with the impeller, the structure is simple, and the oil fume can be further separated. In addition, the speed increaser increases the speed of the filter screen. , can more effectively improve the oil separation rate and reduce air pollution.

Description of drawings

Fig. 1 is the three-dimensional exploded schematic diagram one of blower of the present invention;

Fig. 2 is the three-dimensional exploded schematic diagram two of the blower of the present invention;

Fig. 3 is the perspective exploded schematic diagram of the fan part of the present invention;

Fig. 4 is the three-dimensional structure schematic diagram one of the speed increaser of the present invention;

Fig. 5 is the three-dimensional structure schematic diagram two of the speed increaser of the present invention;

FIG. 6 is a schematic diagram one of the three-dimensional structure of the range hood part of the present invention;

FIG. 7 is a schematic diagram 2 of a partial three-dimensional structure of the range hood of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the present invention discloses a new type of fan, comprising a volute 1, an impeller 2 and a motor 3 inside the volute 1. The motor 3 drives the impeller 2 to rotate, and the volute 1 is provided with an air inlet 11, where:

Referring to FIG. 1 and FIG. 2 , the new fan also includes a filter screen 4 , a speed increaser 5 and an air inlet ring 6 .

Referring to FIGS. 4 and 5 , the speed increaser 5 is arranged between the motor 3 and the filter screen 4 , the input shaft 51 of the speed increaser 5 is connected with the output shaft 31 of the motor 3 , and the output shaft 52 of the speed increaser 5 is connected to the There is a clip 53 clamped on the filter screen 4, so that the output shaft 52 can drive the filter screen 4 to rotate. Because the maximum speed of the motor used by the general fan cannot make the filter screen 4 fully exert its effect of separating grease, therefore, Use the speed increaser 5 to increase the rotation speed of the filter screen 4, improve the separation degree of grease, and reduce the concentration of the exhaust fumes; when the speed of the output shaft 52 of the speed increaser 5 is higher, the faster the filter screen 4 rotates, the filter screen 4 can contact The more oil fume, the higher the grease separation degree, that is, the speed of the output shaft 52 of the speed increaser 5 is proportional to the grease separation degree; after a lot of experiments, it is found that when the speed of the output shaft 52 of the speed increaser 5 is the output shaft of the motor 3 When the speed of 31 is 1.2 times, the oil fume can achieve a good degree of purification; when the speed of the output shaft 52 of the speed increaser 5 is greater than 6 times the speed of the output shaft 31 of the motor 3, the swing of the speed increaser 5 is larger, and it is easy to Other components interfere, damage other components, and the noise is large; therefore, the speed range of the output shaft 52 of the speed increaser 5 is 1.2-6 times the speed of the output shaft 31 of the motor 3

The degree of grease separation refers to the ability of the range hood to separate grease from the soot gas under the specified test conditions.

1 and 2, the volute 1 is provided with an air inlet 11, the air inlet ring 6 is covered on the air inlet 11, and is fixed on the volute 1 by fasteners, and the air inlet ring 6 is provided with a On the support frame 61 for fixing the speed increaser 5, the middle of the support frame 61 is provided with a through hole 611 for the output shaft 52 of the speed increaser 5 to pass through;

Referring to Figure 1, Figure 2 and Figure 3, the filter screen 4 is used to filter grease, reduce the oil entering the fan, and improve the effect of separating oil fume to purify the external exhaust fume; the filter screen 4 can be just covered on the air inlet 11, That is, it is located on the inside of the air inlet ring 6, and the filter screen 4 can also cover the air inlet 11, that is, it is located on the outside of the air inlet ring 6. In this embodiment, the filter screen 4 is covered on the air inlet 11, that is, it is located in the air inlet. The outer side of the ring 6 is convenient to increase the contact area between the grease and the filter screen 4, that is, the filter area is increased, and the oil separation rate is more effectively improved; In this embodiment, the filter screen 4 is formed into an annular radial shape, which includes a center seat 41, a plurality of cylindrical strips 42 and a plurality of rings 43; the plurality of cylindrical strips 42 are formed along the center seat 41 are radially arranged radially to the outside; a plurality of rings 43 are arranged outside the center seat 41 shown, and are concentric with the center seat 41; the cylindrical strip 42 is connected to the ring 43 in a crosswise manner; in this embodiment, There are two rings 43 ; the shape of the filter screen 4 in this embodiment more closely follows the direction of the wind sucked in by the impeller, which is conducive to reducing wind resistance as much as possible and reducing the burden on the motor 3 . The center seat 41 is provided with a card slot 411 which is matched with the clip 53, and the center seat 41 is provided with a through hole 412 for the output shaft 52 of the speed increaser 5 to pass through. The nut 9 matched with the output shaft 52 of the filter 5 is used to prevent the filter screen 4 from being separated from the output shaft 52 when it rotates.

Referring to Figures 1 and 2, during assembly, the speed increaser 5 is fixed on the support frame 61 of the air inlet ring 6 through fasteners, and the input shaft 51 of the speed increaser 5 is connected to the output shaft 31 of the motor 3, The output shaft 52 of the speed increaser 5 passes through the through hole 611 of the air inlet ring 6, the air inlet ring 6 is covered on the air inlet 11, and is fixed on the volute 1, and the clip 53 on the output shaft 52 is just right. It is clamped on the slot 411 of the filter screen 4, and the output shaft 52 passes through the through hole 412, and then the nut 9 is matched with the end of the output shaft 52 to fix the filter screen 4 on the output shaft 52, and the assembly is completed. .

When the fan is running, the output shaft 31 of the motor 3 drives the input shaft 51 of the speed increaser 5 to rotate, and the output shaft 52 of the speed increaser drives the filter screen 4 to rotate. When the grease in the fume contacts the filter screen 4, the grease hangs on the filter screen. On the net, improve the grease separation rate of the fan; when the rotating speed of the filter screen 4 is larger, more grease is exposed, and the grease separation rate of the fan is higher.

Referring to FIG. 6 and FIG. 7 , the present invention also discloses a range hood, which includes the above-mentioned fan, an oil guide member 7 and an oil collecting box 8 , and the oil guide member 7 is arranged under the volute 1 . And it is connected with the oil collecting box 8. When the fan stops running and there is a lot of grease on the filter screen 4, the grease will drip along the cylindrical strip 42 on the filter screen 4 to the oil guide member 7, and then from the guide member 7. The oil piece 7 flows into the oil collecting box 8, and the oil collecting box 8 is arranged outside the range hood, which is convenient for the user to disassemble and clean.

In the present invention, by adding a filter screen 4 and a speed increaser 5 on the fan, the filter screen 4 shares a motor 3 with the impeller 2, the structure is simple, and the oil fume can be further separated. Speed, can more effectively improve the oil separation rate and reduce air pollution.

The above embodiments are only intended to illustrate rather than limit the present invention, so all equivalent changes or modifications made according to the methods described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (8)

1. The utility model provides a novel fan, is including spiral case (1) and locate its inside impeller (2), motor (3) drive impeller (2) rotate, spiral case (1) on be equipped with air intake (11), its characterized in that, further including filter screen (4) and speed increaser (5), filter screen (4) locate air intake (11) on, input shaft (51) of speed increaser (5) with output shaft (31) of motor (3) are connected, output shaft (52) of speed increaser (5) with filter screen (4) are connected.

2. The new fan according to claim 1, characterized in that the speed of the output shaft (52) of the speed increaser (5) is 1.2-6 times the speed of the output shaft (31) of the motor (3).

3. The novel fan according to any one of claims 1 or 2, further comprising an air inlet ring (6), wherein the air inlet ring (6) is covered on the air inlet (11) and is fixedly arranged on the volute (1), and the filter screen (4) is arranged outside the air inlet ring.

4. The novel fan as claimed in claim 3, wherein the speed increaser (5) is fixedly arranged on the air inlet ring (6), and an output shaft (52) of the speed increaser (5) passes through the air inlet ring (6) to be connected with the filter screen (4).

5. The novel fan according to claim 4, wherein the air inlet ring (6) is provided with a support frame (61) for fixing the speed increaser (5), and a through hole (611) for the output shaft (52) of the speed increaser (5) to penetrate is formed in the middle of the support frame (61).

6. The new fan according to any one of claims 1 or 2, characterized in that said sieve (4) comprises a central seat (41), a plurality of cylindrical strips (42) and a plurality of rings (43); a plurality of said cylindrical strips (42) are radially arranged along the radially external side of said central seat (41); the circular rings (43) are arranged outside the central seat (41) and are concentric with the central seat (41); the cylindrical strip (42) is connected with the circular ring (43) in a crossing way.

7. The novel fan as claimed in claim 6, wherein the output shaft (52) of the speed increaser (5) is provided with a clamping strip (53), and the central seat (41) is provided with a clamping groove (411) matched with the clamping strip (53).

8. A range hood, characterized by, including the novel fan of any one of claims 1-8, lead oil spare (7) and oil collecting box (8), lead oil spare (7) to locate under the spiral case (1), and with oil collecting box (8) intercommunication.

Images