CN206846844U - Eddy flow range hood - Google Patents

Abstract

A swirling range hood, comprising a casing (1), a fan (2) and a smoke collection hood (3), the aforementioned fan (2) is arranged in the casing (1), and the aforementioned smoke collection hood (3) Located at the front port of the cover (1), the aforementioned smoke collecting hood (3) has a smoke collecting chamber communicated with the cover (1), characterized in that the inlet end of the smoke collecting hood (3) is provided with an inlet Air cylinder (4), the bottom center position of this air intake cylinder (4) is provided with axial air inlet hole (41), and this air intake cylinder (4) side wall is provided with a plurality of tangentially enter the lateral direction in the air intake cylinder (4). Air intake holes (42), the aforementioned side air intake holes (42) are arranged around the axial air intake holes (41). Compared with the prior art, the utility model has the advantage that the swirling flow is formed in the fume collecting hood through the lateral air intake hole and the axial air intake hole set in the air intake cylinder, which is similar to a tornado and can effectively improve the effect of oil suction .

Description

swirl range hood

technical field

The utility model relates to a cooking fume purification treatment device, in particular to a cooking range hood.

Background technique

At present, the range hood basically includes a casing, a blower fan and a smoke collection hood. The fan is arranged in the casing, and the smoke collection hood is arranged at the front port of the casing. Most of them are centrifugal fans. The principle is to use the centrifugal effect during the rotation of the fan blades to mechanically discharge the fume gas outside. Compared with other fans, the application of the centrifugal fan system on the hood is very mature.

However, this type of range hood cannot effectively improve the range hood's range hood effect, and will waste a large amount of compressed air, resulting in a decrease in the efficiency of the entire range hood system. At the same time, the range hood makes a lot of noise when it is working, so it is necessary to Make corresponding improvements.

For this reason, some range hoods that can produce swirling flow have occurred in the prior art, such as the Chinese utility model patent "Double-rotation air-gathering stomach range hood" (authorized announcement number CN2206416Y) that is ZL94244662.3 as the patent number; Refer to the Chinese invention patent application "Swirling Leafless Range Hood and Range Hood" (publication number CN104949182A) with application number 201510447599.8. The above-mentioned improved inventions have improved a certain range of smoke absorption effect, but the overall structure is more complicated .

Utility model content

The technical problem to be solved by the utility model is to provide a swirl range hood with a simple structure and capable of improving the effect of the range hood in view of the above-mentioned technical status quo.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a swirl range hood, including a casing, a fan and a smoke collection hood, the aforementioned fan is arranged in the casing, and the aforementioned smoke collection hood is arranged in the casing The front port of the smoke collecting hood has a smoke collecting cavity connected with the casing, and it is characterized in that the air intake end of the smoke collecting hood is provided with an air intake tube, and the center of the bottom of the air intake tube is provided with an axial air intake hole The side wall of the air intake cylinder is provided with a plurality of side air intake holes tangentially entering the air intake cylinder, and the aforementioned side air intake holes are arranged around the axial air intake holes.

The air intake end of the fume collecting hood is provided with two air intake cylinders arranged at intervals, and the side air intake holes provided on the two air intake cylinders are set opposite to the direction of entering the air intake cylinder tangentially. In this way, the direction of the swirling flow formed by the two air intake cylinders is opposite, which can improve the effect of oil absorption

Preferably, the axial air inlet hole is circular.

Further, in order to reduce noise, the outer wall of the air intake tube has an air intake guide surface at the outer end of the lateral air intake hole. Preferably, the included angle between the air intake guide surface and the circle tangent of the circle where the cross section of the air intake tube is located is 5-30°.

The air intake cylinder has an upwardly bent guide ring, which is arranged around the axial air intake hole, and the guide ring can play a drainage role and reduce noise at the same time.

Described air intake tube can be arranged on the fume collecting hood up and down, so that the air intake tube 4 is close to oil fume when working like this, and stretches into the smoke collecting hood when idle. The lifting mechanism can be driven by a motor combined with a screw nut, can also be driven by a motor combined with a gear set, and can also be driven by a cylinder.

Compared with the prior art, the utility model has the advantage that the swirling flow is formed in the fume collecting hood through the lateral air intake hole and the axial air intake hole set in the air intake cylinder, which is similar to a tornado and can effectively improve the effect of oil suction At the same time, there are few changes to the existing fume collecting hood, the overall structure is simple, and it is easy to manufacture and produce.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the embodiment.

Figure 2 is an exploded view of the embodiment.

FIG. 3 is an enlarged view from another angle of view of one of the intake cylinders in FIG. 2 .

detailed description

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2 and Figure 3, the swirl range hood in this embodiment includes a casing 1, a fan 2 and a smoke collection hood 3, the fan 2 is arranged in the casing 1, and the smoke collection hood 3 is arranged At the front port of the cover 1, the smoke collecting hood 3 has a smoke collecting cavity connected with the cover 1, and it is characterized in that the intake end of the smoke collecting hood 3 is provided with an air intake tube 4, and the bottom center of the intake tube 4 is opened There are axial air inlet holes 41 , and the side wall of the air inlet cylinder 4 is provided with a plurality of side air inlet holes 42 tangentially entering the air inlet cylinder 4 , and the side air inlet holes 42 are arranged around the axial air inlet holes 41 . The cooperation of the lateral air intake holes 42 and the axial air intake holes 41 can form a swirl flow in the fume collecting hood 3, which is similar to a tornado, and can effectively improve the oil fume absorption effect.

The air intake end of the smoke collection hood 3 in this embodiment is provided with two air intake cylinders 4 arranged at intervals, and the side air intake holes 42 provided on the two air intake cylinders 4 are set opposite to the direction in which they enter the air intake cylinder 4 tangentially. . In this way, the direction of the swirling flow formed by the two air intake tubes 4 is opposite, which can improve the oil fume absorption effect.

The axial air inlet 41 is circular, and the outer wall of the air inlet tube 4 is located at the outer end of the lateral air inlet 42 and has an air inlet guide surface 43 . The included angle between the air intake guide surface 43 and the circle tangent of the circle where the cross section of the air intake cylinder 4 is located is 5-30°. The air intake cylinder 4 has an upwardly bent guide ring 44 arranged around the axial air intake hole 41 .

The air intake cylinder 4 in this embodiment can be arranged on the smoke collecting hood 3 in a liftable manner by adding a lifting mechanism. Intake tube 4 is close to oil fume when working like this, stretches in the fume collecting hood when idle. The lifting mechanism can be driven by a motor combined with a screw nut, can also be driven by a motor combined with a gear set, or can be driven by a cylinder, and will not be further developed here.

Claims (7)

1. A swirl range hood, comprising a casing (1), a blower fan (2) and a smoke collection hood (3), the aforementioned blower fan (2) is located in the casing (1), and the aforementioned smoke collection hood ( 3) Located at the front port of the cover (1), the aforementioned smoke collecting hood (3) has a smoke collecting chamber communicated with the cover (1), characterized in that the inlet end of the smoke collecting hood (3) is set Air intake tube (4) is arranged, and the bottom center position of this intake tube (4) is provided with axial air intake hole (41), and this intake tube (4) side wall is provided with a plurality of tangentially entering in the intake tube (4). Side air intake holes (42), the aforementioned side air intake holes (42) are arranged around the axial air intake holes (41). 2. The swirl range hood according to claim 1, characterized in that the air intake end of the smoke collecting hood (3) is provided with two air intake cylinders (4) arranged at intervals, and the two air intake cylinders ( 4) The side air inlets (42) provided on the top are arranged opposite to the direction entering the air intake tube (4) tangentially. 3. The swirl range hood according to claim 1, characterized in that the axial air inlet hole (41) is circular. 4. The swirl range hood according to claim 1, characterized in that the outer wall of the air intake tube (4) has an air intake guide surface (43) at the outer end of the lateral air intake hole (42). 5. The swirl range hood according to claim 4, characterized in that the angle between the air intake guide surface (43) and the circle tangent of the circle where the cross section of the air intake cylinder (4) is located is 5-30°. 6. The swirl range hood according to claim 1, characterized in that the air intake cylinder (4) has a guide ring (44) bent upwards, and the guide ring (44) surrounds the axial air intake hole (41 ) arrangement. 7. The swirl range hood according to claim 1, characterized in that the air intake cylinder (4) is arranged on the smoke collecting hood (3) so as to be able to lift.