CN213630581U - Smoke ventilator and drawer type filter equipment thereof - Google Patents

Abstract

The application provides a modified smoke ventilator and drawer type filter equipment thereof. One embodiment of the application relates to a range hood, which comprises a drawer type filtering device (4) which comprises a support piece (5), an axial flow impeller and an annular side wall (6) with openings at the upper end and the lower end; the supporting piece (5) is fixed on the annular side wall (6), and the supporting piece (5) is used for supporting the axial-flow impeller; the drawer type filtering device (4) is arranged to be suitable for being installed into an airflow channel of the range hood through a mounting opening along a horizontal direction; the air flow generated by the operation of the range hood flows in from an opening at one end of the annular side wall (6), flows through the axial flow impeller and flows out from an opening at the other end of the annular side wall (6); the axial flow impeller is suitable for being driven to rotate by airflow generated by the operation of the range hood. Thus, the grease filtering effect is improved.

Description

Smoke ventilator and drawer type filter equipment thereof

[ technical field ] A method for producing a semiconductor device

The application relates to the field of range hoods, in particular to a drawer type filtering device of a range hood.

[ background of the invention ]

In asian regions, the amount of oil in the smoke produced during cooking is particularly high due to traditional cooking practices of stir-frying. Therefore, a range hood for exhausting oil smoke generated during cooking becomes an important household appliance essential in daily life at home. For the range hood, how to effectively improve the filtering effect of grease in oil smoke is a technical problem to be solved urgently. Currently, many filter arrangements for range hoods have been proposed. However, the existing solutions still need to be further improved and improved.

Unless otherwise supported by sufficient evidence, the prior art described herein is not meant to be an admission that such prior art is widely known to those of ordinary skill in the art to which this application pertains prior to the filing date of the present application.

[ summary of the invention ]

It is an object of the embodiments of the present application to provide an improved range hood and drawer-type filtering device thereof.

One embodiment of the present application relates to a range hood, comprising a drawer-type filtering device, which comprises a support member, an axial flow impeller, and an annular side wall with openings at the upper and lower ends; the supporting piece is fixed on the annular side wall and used for supporting the axial-flow impeller; the drawer type filtering device is arranged to be suitable for being installed into an airflow channel of the range hood through a mounting opening along the horizontal direction; the air flow generated by the operation of the range hood flows in from the opening at one end of the annular side wall, flows through the axial flow impeller and flows out from the opening at the other end of the annular side wall; the axial flow impeller is suitable for being driven to rotate by airflow generated by the operation of the range hood. The drawer type filter device that this application provided, its axial compressor impeller is rotatory, is favorable to throwing away the attached grease, promotes grease filtration effect.

In one possible design, the axial impeller is arranged to be adapted to fling the attached grease against the inner wall of the annular side wall when rotating. Thus, the grease filtering effect is improved.

In one possible design, the smoke guide plate is arranged below the drawer type filtering device; the bottom end of the annular side wall is provided with a circle of oil receiving groove which is suitable for containing grease sliding off from the inner wall of the annular side wall; the oil receiving groove is provided with an oil leakage hole; and the grease in the oil receiving groove passes through the oil leakage hole and drops to the inner surface of the smoke guide plate.

In one possible design, the air conditioner comprises a casing and a fan arranged in the casing; the mounting opening is arranged on the front wall of the shell; after the drawer type filtering device is installed in the airflow channel of the range hood, the annular side wall is attached to the wall body of the shell; the drawer filter is located upstream of the fan in the direction of flow of the airflow. Thus, the attachment of grease on the fan is reduced.

In one possible design, the housing includes a closure flap adapted to close the mounting opening after the drawer filter arrangement is installed in the airflow path of the range hood.

In one possible design, the axial flow impeller comprises at least two blades, the root of the blade having a curvature greater than the curvature of the tip of the blade; the axial flow impeller comprises a rotating shaft and a fixed shaft, and the rotating shaft is arranged to rotate around the fixed shaft; the blades are arranged on the rotating shaft; the fixed shaft is fixed to the support member, and extends in the flow direction of the airflow. Since the curvature of the root of the blade is greater than the curvature of the tip of the blade, grease attached to the blade is easily thrown off.

In one possible design, the axial-flow impeller further comprises a motor which is arranged and suitable for driving the axial-flow impeller to rotate. Therefore, the rotating speed of the axial flow impeller is improved, and the oil throwing efficiency is improved.

In one possible design, the device further comprises an electrostatic filter screen arranged above the drawer type filter device; the drawer filter is located upstream of the electrostatic screen in the direction of flow of the airflow. Thus, the grease filtering effect is improved.

In one possible design, a rectifying plate is arranged at the opening of the upper end of the annular side wall.

In one possible design, the electrostatic screen is arranged to be adapted to be fitted into the air flow channel of the range hood through a fitting opening in a horizontal direction; the assembly opening is located above the mounting opening.

Another embodiment of the present application relates to a slide-in filter arrangement for a range hood as described in any one of the above.

In this case, the directional expressions such as "lower", "upper", "upstream", "bottom", "upper end opening", "lower end opening" and the like in the present application are based on the usual use state of the range hood, unless otherwise specified.

The above summary of the present application is not intended to describe all possible implementations of the present application. Throughout this application, guidance is provided through lists of examples, which can be used in various possible combinations.

[ description of the drawings ]

The following drawings are merely illustrative and explanatory of the present application and do not limit the scope of the present application, wherein:

FIG. 1 is a schematic structural view of an embodiment of a range hood of the present application;

FIG. 2 is a schematic view of a drawer filter assembly according to an embodiment of the present disclosure;

FIG. 3 is another schematic view of a drawer-style filter arrangement according to an embodiment of the present disclosure;

fig. 4 is a schematic view of another drawer-type filtering device according to an embodiment of the range hood.

Reference numerals:

1-machine shell, 2-smoke collecting hood, 3-sealing cover plate, 4-drawer type filtering device, 5-supporting piece, 6-annular side wall, 7-oil receiving groove, 8-blade, 9-root of blade, 10-top of blade, 11-rotating shaft and 12-fixed shaft.

[ detailed description ] embodiments

To make the objects, solutions and advantages of the present application more clear, the present application is further described below with reference to the accompanying drawings and preferred embodiments.

The embodiment of the range hood provided by the application is shown in fig. 1 and comprises a machine shell 1, a fan, a smoke collecting hood 2, a drawer type filtering device 4, a smoke guide plate and an oil cup. The oil cup is hung at the bottom end of the rear side of the smoke collecting hood. The fan is arranged in the casing 1. The smoke guide plate is a pore-free plate and is positioned below the air inlet of the smoke collecting cover 2, and an airflow inlet is formed at the interval between the edge of the smoke guide plate and the smoke guide cavity of the smoke collecting cover 2. The air inlet of the fume collecting hood 2 is arranged in the fume guiding cavity of the fume collecting hood 2. The air inlet of the smoke collecting hood 2 is shielded by the smoke guide plate below. When the smoke exhaust ventilator operates (the fan rotates), airflow flows through the airflow inlet formed by the edge of the smoke guide plate and the smoke guide cavity of the smoke collection cover 2 at intervals, then flows into the air inlet of the smoke collection cover 2, and then flows to the fan.

The drawer-type filter unit 4 is provided to be adapted to be fitted into an air flow passage of the hood through a mounting opening in a horizontal direction. Specifically, the mounting opening is provided on the front wall of the cabinet 1. The drawer filter 4 is installed in the airflow path in the cabinet 1 through the installation opening in the horizontal direction. Since the drawer type filtering apparatus 4 can be installed and removed like a drawer, the process of installing and removing the same becomes very simple.

The housing 1 comprises a closure cover 3 arranged to close the mounting opening after the drawer filter 4 has been installed in the airflow path of the range hood, as shown in fig. 1, when the drawer filter 4 is located below the fan and above the air inlet of the hood 2.

The smoke guide plate is arranged below the drawer type filtering device 4, and specifically, the smoke guide plate is suspended below the smoke guide cavity of the smoke collecting hood 2. The smoke guide plate is arranged from front to back in a downward inclined mode, so that grease attached to the smoke guide plate is gathered towards the rear side of the smoke guide plate, and the grease drops into an oil cup below the smoke guide plate after dropping.

The drawer-type filtering unit 4, as shown in fig. 2 to 4, comprises a support 5, an axial impeller and an annular side wall 6 open at the upper and lower ends. An annular side wall 6 surrounds the axial flow impeller as shown in figure 2. The support member 5 is fixed to the annular side wall 6, and specifically, the support member 5 is fixed to the annular side wall 6 at the lower end opening thereof, as shown in fig. 2 and 3. The support 5 is for supporting an axial flow impeller.

After the drawer-type filtering device 4 is installed in the airflow channel of the range hood, as shown in fig. 1, the airflow generated by the operation of the range hood flows in from the opening at one end of the annular side wall 6 (i.e. the opening at the lower end), flows through the axial flow impeller, and flows out from the opening at the other end of the annular side wall 6 (i.e. the opening at the upper end). The annular side wall 6 is a ring having a square cross section, as shown in fig. 2 to 4.

The axial flow impeller is suitable for being driven to rotate by the airflow generated by the operation of the range hood, namely, the axial flow impeller is not driven by a motor and is driven to rotate purely by the airflow generated by the operation of the range hood.

An axial flow impeller arranged to spin attached grease against the inner wall of the annular side wall 6 when rotated.

The axial flow impeller comprises a rotating shaft 11 and a stationary shaft 12, the rotating shaft 11 being arranged for rotation around the stationary shaft 12. The stationary shaft 12 is fixed to the support 5, the stationary shaft 12 extending in the flow direction of the airflow. Specifically, the bottom of the fixed shaft 12 is provided with a sheet-like connector fixed to the support 5 by screws.

The axial-flow impeller includes nine blades 8, the shape and size of the nine blades 8 are the same, and the nine blades 8 are sequentially and uniformly arranged on the peripheral wall of the rotating shaft 11, as shown in fig. 2 and 3.

In the height direction, each blade 8 is flat as shown in fig. 2. The "height direction" means a direction in which the fixed shaft 12 extends.

The root 9 of each blade 8 has a greater curvature than the tip 10 of the blade 8. The top 10 of the blade 8, i.e. the tip. Due to the high curvature design of the root part 9 of the blade 8, one side of the pressure surface of the axial flow impeller obtains a larger pressure, and finally a rotating torque is formed, so that when air flow generated by the operation of the range hood passes through the axial flow impeller, the axial flow impeller is driven.

The curvature of the tip 10 of the blade 8 is low and tends to be straight. From the one-dimensional blade shape, the outlet of the axial flow impeller is more than 90 degrees, and the top 10 of the blade 8 is straight, so that the obstruction of the oil throwing process is not caused. In addition, the axial flow impeller is designed according to a blade profile line of the centrifugal fan with a low specific speed, and in such a structure, as shown in fig. 2 and 3, the wrap angle of the blades 8 is relatively large, and the flow-to-stroke between the blades 8 is long. Therefore, after the axial flow impeller is driven to rotate, the air flow is accelerated over a long distance from the root 9 of the blade 8 to obtain a relatively high speed on the suction surface side, and then is thrown out at the tip 10 of the blade 8 by a relatively large centrifugal force. The tops 10 of the blades 8 are straight and matched with a large wrap angle, so that oil smoke is thrown out without obstruction after being accelerated for a long distance, and a good oil throwing effect is achieved.

The bottom end of the annular side wall 6 is provided with a circle of oil receiving groove 7 which is suitable for containing grease sliding off from the inner wall of the annular side wall 6. The oil receiving groove 7 is formed by bending the bottom end wall body of the annular side wall 6 inward. The bottom of the oil receiving groove 7 is provided with an oil leakage hole. The grease in the oil receiving groove 7 passes through the oil leakage hole and drops to the inner surface of the smoke guide plate. The smoke guide plate further guides the grease into the oil cup. The oil receiving groove 7 is also used to support the support member 5, as shown in fig. 2 and 3, and specifically, the support member 5 is fixed to the oil receiving groove 7 by screws.

After the drawer-type filtering device 4 is installed in the airflow channel of the housing 1 of the range hood, the annular side wall 6 is attached to the wall of the housing 1. By "the annular side wall 6 abuts against a wall of the housing 1", it is understood that: the annular side wall 6 is adjacent to the wall of the casing 1, specifically, there may be a gap between the annular side wall 6 and the wall of the casing 1, or the annular side wall 6 and the wall of the casing 1 may abut against each other without a gap. The wall of the housing 1 against which the annular side wall 6 rests is adapted to the shape of the annular side wall 6 and has a square cross section. The front part of the wall of the housing 1 against which the annular side wall 6 bears is the closing cover 3. Since the annular side wall 6 abuts against the wall of the casing 1, the installation of the drawer filter 4 does not change the flow direction of the air flow in the air flow passage of the casing 1, but still flows from bottom to top in the vertical direction. It can be said that the incorporation of the drawer filter 4 corresponds to an increase in the thickness of the wall of the cabinet 1.

After the drawer-type filtering device 4 is installed in the airflow channel of the range hood, the drawer-type filtering device 4 is located at the upstream of the fan along the flowing direction of the airflow.

The drawer-type filter unit 4 is adapted to be placed in a dishwasher for washing after being detached from the hood.

The foregoing is merely one embodiment of the present application and other embodiments may be devised by adding, deleting, modifying or replacing certain features. For example, the annular side wall may have a circular ring-shaped cross section. For another example, the smoke guide plate may be integrally formed with an oil collecting groove instead of the oil cup. For another example, a motor may be further provided for driving the axial-flow impeller to rotate. The motor is arranged to be linked with a fan of the range hood, namely, when the range hood operates, the motor also drives the axial flow impeller to rotate so as to improve the grease filtering effect of the drawer type filtering device. For example, the annular oil receiving groove may be provided at a bottom end of the annular side wall, and a free end of the annular oil receiving groove may extend obliquely from bottom to top toward the blades of the axial flow impeller to guide the airflow. Thus, the smoke guiding effect is improved. For another example, the sheet-shaped connecting member at the bottom of the fixing shaft may be directly welded and fixed to the supporting member. For another example, the fixing shaft may be provided with an external thread and may be engaged with a nut to fix the fixing shaft to the support member. For example, the number of blades is not limited to nine, and may be two or more. For another example, the inner wall of the annular side wall may be provided with a non-stick coating to facilitate the grease to slide down. For another example, the filter device may further include an electrostatic filter disposed above the drawer type filter device. The drawer filter is located upstream of the electrostatic screen in the direction of flow of the air stream. The electrostatic screen is configured to fit horizontally through a mounting opening in the flow path of the range hood, the mounting opening being positioned above the mounting opening. The assembly opening and the mounting opening can be communicated or plate bodies are arranged between the assembly opening and the mounting opening at intervals. The upper end opening of the annular side wall is provided with a rectifying plate. The rectifying plate is manufactured by arranging a plurality of airflow through holes on a plate body. Set up the cowling panel for the air current that flows in the static filter screen is more even, helps promoting the work efficiency of static filter screen. The electrostatic filter screen has the advantage of high adsorption efficiency, and generally comprises an ionization region and an adsorption region, wherein the adsorption region generally consists of a positive plate and a negative plate, and the ionization region generally consists of an ionization wire or a zigzag ionization unit and a grounding plate. The electrostatic filter screen forms a high-voltage electric field by utilizing point discharge, so that oil smoke particles passing through an ionization region are electrified and then flow through an adsorption region to be adsorbed by a corresponding electrode plate.

The elements of the different embodiments may be combined with each other in any feasible manner to achieve the object of the application.

It should be additionally noted that the present application should not be construed as limited to the above-described embodiments, but rather should be construed to cover all possible embodiments as determined by the claims that follow when taken in conjunction with the disclosure herein. Therefore, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are within the protection scope of the present application, unless departing from the content of the present application.

Claims (11)

1. A range hood, its characterized in that:

comprises a drawer type filtering device (4) which comprises a supporting piece (5), an axial flow impeller and an annular side wall (6) with openings at the upper end and the lower end;

the supporting piece (5) is fixed on the annular side wall (6), and the supporting piece (5) is used for supporting the axial-flow impeller;

the drawer type filtering device (4) is arranged to be suitable for being installed into an airflow channel of the range hood through a mounting opening along a horizontal direction;

the air flow generated by the operation of the range hood flows in from an opening at one end of the annular side wall (6), flows through the axial flow impeller and flows out from an opening at the other end of the annular side wall (6);

the axial flow impeller is suitable for being driven to rotate by airflow generated by the operation of the range hood.

2. The range hood of claim 1, wherein:

the axial flow impeller is arranged to be suitable for throwing attached grease onto the inner wall of the annular side wall (6) when rotating.

3. The range hood of claim 2, wherein:

the smoke guide plate is arranged below the drawer type filtering device (4);

the bottom end of the annular side wall (6) is provided with a circle of oil receiving groove (7) which is suitable for containing grease sliding off from the inner wall of the annular side wall (6);

the oil receiving groove (7) is provided with an oil leakage hole;

and the grease in the oil receiving groove (7) passes through the oil leakage hole and drops to the inner surface of the smoke guide plate.

4. The range hood of claim 1, wherein:

comprises a casing (1) and a fan arranged in the casing (1);

the mounting opening is arranged on the front wall of the machine shell (1);

after the drawer type filtering device (4) is arranged in an airflow channel of the range hood, the annular side wall (6) is attached to the wall body of the shell (1);

the drawer filter is located upstream of the fan in the direction of flow of the airflow.

5. The range hood of claim 4, wherein:

the housing (1) comprises a closure cover plate (3) arranged to close the mounting opening after the drawer filter arrangement (4) has been fitted into the airflow path of the range hood.

6. The range hood of claim 1, wherein:

the axial-flow impeller comprises at least two blades (8), the root (9) of the blade (8) having a curvature greater than the curvature of the tip (10) of the blade (8);

the axial flow impeller comprises a rotating shaft (11) and a fixed shaft (12), wherein the rotating shaft (11) is suitable for rotating around the fixed shaft (12);

the blades (8) are arranged on the rotating shaft (11);

the stationary shaft (12) is fixed to the support (5), the stationary shaft (12) extending in the direction of flow of the air flow.

7. The range hood of claim 1, wherein:

the axial-flow impeller is suitable for driving the axial-flow impeller to rotate.

8. The range hood of any one of claims 1 to 7, wherein:

the electrostatic filter screen is arranged above the drawer type filtering device (4);

the drawer filter is located upstream of the electrostatic screen in the direction of flow of the airflow.

9. The range hood of claim 8, wherein:

and a rectifying plate is arranged at an upper end opening of the annular side wall (6).

10. The range hood of claim 8, wherein:

the electrostatic filter screen is arranged to fit into the airflow channel of the range hood through a mounting opening in a horizontal direction;

the assembly opening is located above the mounting opening.

11. Drawer filter arrangement, which is the drawer filter arrangement (4) of a range hood according to any of claims 1 to 10.

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