WO2021036486A1

WO2021036486A1 - Oil guide ring and range hood having same

Info

Publication number: WO2021036486A1
Application number: PCT/CN2020/099075
Authority: WO
Inventors: 邓志敏; 冯展翊; 孔祥凯; 王宏; 冯圆通; 张皓坤; 庞宗莉; 陈锦汾
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-08-23
Filing date: 2020-06-30
Publication date: 2021-03-04
Also published as: CN110529899A

Abstract

Disclosed are an oil guide ring and a range hood having same, the oil guide ring comprising an oil collecting part (1) and a connecting part (2). The oil collecting part (1) is provided with an annular oil blocking part and an oil guiding groove (11) connected to the annular oil blocking part, and an inlet of the oil guiding groove (11) is provided in an inner surface of the oil collecting part (1). The connecting part (2) is arranged on the oil collecting part (1) and extends in a direction away from the oil collecting part (1). The annular oil blocking part surrounds the periphery of a filter screen (7), and when the filter screen (7) rotates, oil is ejected out of the filter screen (7) and blocked by the oil collecting part (1). The oil collecting part (1) is annular, and cooking fumes flow and converge along the inner surface of the oil collecting part (1) and finally flow out in a centralized manner through the oil guiding groove (11). The annular oil collecting part (1) has a certain width, such that a shape with openings at two ends is formed, and the connecting part (2) used for being connected to the range hood is arranged on the opening at one end.

Description

Oil guide ring and range hood with the oil guide ring

This disclosure requires the priority of a Chinese patent application filed with the Chinese Patent Office on August 23, 2019, the application number is 201910787971.8, and the invention title is "an oil guide ring and range hood with the oil guide ring". The entire content is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the technical field, in particular to an oil guide ring and a range hood with the oil guide ring.

Background technique

Range hoods are commonly used kitchen equipment. During use, the range hoods are sucked out of the room. The range hood is usually equipped with a filter. When the oil fume passes through the filter, the oil will adhere to the filter, motor, and fan blades. As the use time of the range hood increases, more oil is attached, which will increase the load of the fan system and reduce the working efficiency of the range hood. And because more and more oil adheres to the filter screen, the actual opening area of the filter screen becomes smaller, thereby increasing the resistance of oil fume entering, so that the strain on the filter screen increases when the air is sucked, and the vibration increases, thereby increasing The noise produced by the range hood when it is working.

The related art proposes a new type of range hood, in which the filter screen is set as a rotatable dynamic filter screen. The filter screen can be controlled to rotate by a driving mechanism. When oil fume passes by, oil stains adhere to the rotating filter screen. Since the filter screen is rotating, the oil stains will be thrown out along the circumferential edge of the filter screen by centrifugal force, making it difficult to collect and process.

Summary of the invention

Therefore, the technical problem to be solved by the present disclosure is to overcome the defect that the oil stains are thrown out by the rotating filter in the related art and are not easy to collect, thereby providing an oil guide ring and a range hood with the oil guide ring.

The present disclosure provides an oil guide ring, including:

An oil collecting part, the oil collecting part is provided with an annular oil retaining part and an oil guiding groove connected with the oil retaining part, the inlet of the oil guiding groove is provided on the inner surface of the oil collecting part;

The connecting portion is provided on the oil collecting portion and extends in a direction away from the oil collecting portion.

In some embodiments, it further includes:

The induced air flanging is provided at an end of the oil collecting part away from the oil guiding groove, and the induced air flanging extends in the direction of the oil guiding groove and forms a drainage channel for guiding oil fume.

In some embodiments, the axial cross-sectional area of the drainage channel gradually decreases in a direction approaching the connecting portion.

In some embodiments, the draft flange is integrally connected with the oil collecting part, and the connecting part of the draft flange and the oil collecting part is transitioned by a rounded corner.

In some embodiments, at least a part of the oil retaining portion is protrudingly arranged and forms a collecting groove.

In some embodiments, the inclination of the collecting groove gradually increases in a direction approaching the oil guiding groove.

In some embodiments, it further includes:

The oil guide is arranged on the oil guide groove and extends toward the outer side of the connecting portion.

In some embodiments, the oil guide includes:

The mounting part is arranged on the oil collecting part and/or the connecting part;

The rounded surface connects the oil guide and the mounting part.

In some embodiments, the oil guide is symmetrically provided with an oil stopper, and the oil stopper extends parallel to the flow direction of the oil.

In some embodiments, the mounting part includes:

A substrate, which is arranged in close contact with the outer wall of the oil guiding groove and/or the oil collecting part;

The positioning block is arranged on the base plate and is arranged in close contact with the side wall of the oil guide groove.

In some embodiments, the angle between the extension direction of the oil guide groove and the horizontal plane is [0°, 90°], and the angle between the extension direction of the oil guide and the horizontal plane is [ 0,°90°].

The present disclosure also provides a range hood, including:

The volute includes at least one air inlet, and a motor is provided in the volute;

The filter screen is arranged at the output end of the motor, located outside the volute, and arranged close to the air inlet;

In the oil guide ring according to any one of the above solutions, the connecting part is installed on the volute, and the oil collecting part surrounds the filter screen.

In some embodiments, the volute has two symmetrically arranged air inlets, the motor is a dual-axis motor, and the dual-axis motor extends two output shafts toward the two air inlets, and the filter screen is Two, and the two filter screens are respectively arranged on the two output shafts.

In some embodiments, it further includes:

The mounting frame is arranged at the position of the air inlet, and the motor is detachably arranged on the part of the mounting frame extending into the interior of the volute.

In some embodiments, corresponding to the oil guide ring provided on the exposed side of the mounting frame, the connecting portion is provided with a connector extending in a direction away from the center of the connecting portion, and the volute is provided with a The insertion part to which the connector is connected.

In some embodiments, it further includes:

An oil guide plate, which is detachably connected to the volute through a connecting end, and the other end is arranged away from the volute, and the outlet end of the oil guide member extends above the oil guide plate.

The technical solution of the present disclosure has the following advantages:

1. The oil guide ring provided by the present disclosure includes: an oil collecting portion provided with an annular oil retaining portion, and an oil guiding groove connected to the oil retaining portion, and an inlet of the oil guiding groove is provided in the collecting portion On the inner surface of the oil part; the connecting part is arranged on the oil collecting part and extends in a direction away from the oil collecting part.

The annular oil retaining part surrounds the filter screen. When the filter screen rotates, the oil is thrown out from the filter screen and the oil is blocked by the oil collecting part. The oil collecting part is annular, and the oil fume flows and converges along the inner surface of the oil collecting part, and finally flows out through the oil guide groove. The annular oil collecting part has a certain width, so it forms a shape with two ends open, and one end of the opening is provided with a connecting part for connecting with the range hood.

2. The oil guide ring provided by the present disclosure, further comprising: a draft flange, the draft flange is provided at an end of the oil collecting part away from the oil guide groove, and the draft flange faces the oil guide groove Extend in the direction and form a drainage channel for guiding oil fume.

The two ends of the oil collecting part are open, the oil guiding groove is set close to one end of the connecting part, and the other end extends out of the wind-inducing flanging. The wind-inducing flanging bends into the range surrounded by the oil collecting part and forms a guide oil fume into the oil collecting part. Range of drainage channels. The oil fume enters the range hood through the oil collecting part through the drainage channel.

3. In the oil guide ring provided by the present disclosure, the axial cross-sectional area of the drainage channel gradually decreases in the direction close to the connecting portion.

Because there is a certain gap between the filter screen and the oil collecting part, the filter screen is controlled by the motor to rotate, and the oil fume is filtered through the filter screen as much as possible. Therefore, the drainage channel guides the oil smoke to gather in the center of the filter screen, reducing the situation that the oil smoke passes through the gap between the filter screen and the oil collecting part without being filtered.

4. In the oil guide ring provided by the present disclosure, the draft flanging is integrally connected with the oil collecting part, and the connecting part of the draft flanging and the oil collecting part is transitioned by rounded corners.

When the range hood is working, it guides the external airflow into the range hood, and first passes through the oil guide ring. In this solution, the airflow with oil smoke enters the range hood through the drainage channel formed by the wind guide flange on the oil guide ring. Since the airflow passes through the oil guide ring at a high level, the airflow collides with the oil guide ring. In this solution, excessive rounded corners are used to reduce the resistance of air impact and guide the air to gather into the drainage channel. . Reduce the noise generated when the range hood is working.

5. In the oil guide ring provided by the present disclosure, at least a part of the oil retaining portion is protrudingly provided and forms a collecting groove.

After the oil stains are thrown out from the filter screen, they are hindered by the annular oil retaining part. However, because the oil collecting part is annular, the oil relies on its own kinetic energy and potential energy to flow along the surface of the oil collecting part to the oil guide groove. However, the volume of a single oil is small, and it is constantly lost due to friction during the process of fitting and flowing. For the smaller oil, the moving path on the oil retaining part is longer, so a single oil is not easy to be collected by the oil tank . In this solution, because the oil baffle is arranged protruding, when the oil is captured by the oil baffle, the oil baffle protrudes to form a slope or arc. Since the oil itself still has a certain kinetic energy, the oil protrudes toward the oil baffle. Converges at the exiting position, so that the volume of the oil converges and increases, and flows into the oil guide groove along the protruding part of the oil baffle.

6. In the oil guide ring provided by the present disclosure, the inclination of the collecting groove gradually increases in the direction close to the oil guide groove.

The flow direction of the oil is toward the oil guide groove. Since the collecting groove is annular, the inclination of the ring near the oil guide groove gradually becomes slower. In this solution, the inclination of the collection tank in the direction close to the oil introduction tank is increased, so that the oil is not easy to stay at the relatively flat slope, and the collection efficiency of the oil is improved.

7. The oil guide ring provided by the present disclosure further includes: an oil guide member, which is arranged on the oil guide groove and extends toward the outer side of the connecting portion.

The oil trapped by the oil guide collecting groove extends away from the oil guide ring to facilitate centralized collection and processing.

8. The oil guide ring provided by the present disclosure, the oil guide includes: a mounting portion, which is provided on the oil collecting portion and/or the connecting portion; a rounded surface, which connects the oil guide and the mounting unit.

The oil guide is detachably connected through the installation part and the oil collecting part and/or the connecting part, which is convenient for cleaning and replacing the oil guide. The installation part and the oil guide are over-connected by the rounded surface, so that the installation part and the oil guide have a certain deformation ability, and the angle between the oil guide and the installation part can be fine-tuned according to actual needs.

9. In the oil guide ring provided by the present disclosure, an oil stopper is symmetrically provided on the oil guide member, and the oil stopper extends in parallel to the flow direction of the oil.

The oil stoppers are on both sides of the oil flow direction to block the oil, prevent the oil from leaking out, and make the oil flow out of the set outlet.

10. According to the oil guide ring provided by the present disclosure, the mounting portion includes: a base plate, which is arranged to be attached to the outer wall of the oil guide groove and/or the oil collecting portion; and a positioning block is provided on the base plate and is attached to the The side wall of the oil guide groove is arranged.

The base plate is located on the side of the oil guide ring away from the connecting part, and the oil guide on the outside can also be removed and replaced without disassembling the oil guide ring.

11. In the oil guide ring provided by the present disclosure, the angle between the extension direction of the oil guide groove and the horizontal plane is [0°, 90°], and the distance between the extension direction of the oil guide member and the horizontal plane is [0°, 90°] The included angle is [0,°90°].

With the inclined oil guide groove and the oil guide, the oil is gathered together and collected along the inclined plane by its own gravity.

12. The range hood provided by the present disclosure includes: a volute, including at least one air inlet, in which a motor is arranged; and a filter, arranged at the output end of the motor, located outside the volute, close to The air inlet is provided; the oil guide ring of any one of the above solutions, the connecting portion is installed on the volute, and the oil collecting portion surrounds the filter screen.

The filter screen is installed on the output shaft of the motor, the filter screen is located outside the air inlet of the range hood, and the oil guide ring is buckled on the air inlet of the range hood and surrounds the filter screen. There is a gap between the filter screen and the oil guide ring. When the filter screen is controlled by the rotation of the motor, the oil attached to the filter screen is thrown out toward the surrounding oil guide ring. The oil falls on the oil collecting part, converges through the collecting trough, and flows along the collecting trough to the oil guiding trough for concentrated collection.

13. In the range hood provided by the present disclosure, the volute has two symmetrically arranged air inlets, the motor is a dual-axis motor, and the dual-axis motor extends two output shafts toward the two air inlets, so There are two filter screens, and the two filter screens are respectively arranged on the two output shafts.

Suction on both sides at the same time improves the extraction efficiency of oil fume. And the filter screens on both sides are surrounded by oil guide rings, and the oil on the filter screens on both sides is collected at the same time.

14. The range hood provided by the present disclosure further comprises: a mounting frame arranged at the position of the air inlet, and the motor is detachably arranged on a part of the mounting frame extending into the interior of the volute.

15. The range hood provided by the present disclosure corresponds to the oil guide ring provided on the exposed side of the mounting frame, the connecting portion is provided with a connecting head extending away from the center of the connecting portion, and the volute is An insertion part connected with the connecting head is provided.

The volute is connected with the insertion part through a connector, and a relief groove is provided on the volute for the exposed part of the mounting frame. The relief groove is located on the connection part and the oil collecting part, and the relief groove is recessed in a direction away from the connection part.

16. The range hood provided by the present disclosure further includes: an oil guide plate, which is detachably connected to the volute through a connecting end, and the other end is set away from the volute, and the outlet of the oil guide The end extends above the oil guide plate.

Since there are oil guide rings on both sides of the volute, the collected oil is led out through the oil guide on both sides. The oil guide plate in this solution collects the oil flowing out of the oil guide and performs centralized collection and processing.

Description of the drawings

In order to more clearly explain the technical solutions in the specific embodiments of the present disclosure or related technologies, the following will briefly introduce the drawings that need to be used in the specific embodiments or related technical descriptions. Obviously, the drawings in the following description are For some of the embodiments of the present disclosure, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

Fig. 1 is a schematic diagram showing the structure of the oil guide ring viewed from the direction of the connecting part;

Figure 2 is an exploded view showing the connection relationship between the oil guide ring and the oil guide;

Figure 3 is a cross-sectional view of the structure of the oil guide ring indicated by A-A in Figure 1;

Figure 4 is a cross-sectional view showing the structure of the oil guide ring B-B in Figure 1;

Figure 5 is a perspective view of the structure where the oil guide ring is installed on the volute;

Figure 6 is an exploded view showing the structure of the oil guide ring installed on the volute;

Figure 7 is an exploded view of the structure of the oil guide ring installed on the corresponding mounting frame;

FIG. 8 is a perspective view showing the structure of the oil guide ring in FIG. 7 from another perspective.

Description of reference signs:

1. Oil collecting part; 11. Oil guiding groove; 2. Connecting part; 21. Insertion part; 22. Recessing groove; 3. Induced wind flanging; 4. Oil guiding part; 41. Mounting part; 411. Base plate; 412 , Positioning block; 42, oil retaining part; 43, rounded surface; 5. oil guide plate; 51, connecting end; 6, volute; 61, insertion part; 7, filter screen; 8, dual-axis motor; 81, Installation frame; 9. Air guide ring.

detailed description

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

Example 1

This embodiment provides an oil guide ring, as shown in FIG. 1, comprising: an oil collecting portion 1, the oil collecting portion 1 is provided with an annular oil retaining portion, and an oil guiding groove 11 connected to the oil retaining portion. The inlet of the oil guide groove 11 is provided on the inner surface of the oil collecting part 1; the connecting part 2 is provided on the oil collecting part 1 and extends in a direction away from the oil collecting part 1. The annular oil retaining part surrounds the filter screen 7. When the filter screen 7 rotates, the oil is thrown out from the filter screen 7 and the oil is blocked by the oil collecting part 1. The oil collecting part 1 is ring-shaped, and the oil fume flows and converges along the inner surface of the oil collecting part 1, and finally flows out through the oil guiding groove 11 in a concentrated manner. The annular oil collecting part 1 has a certain width, so it forms a shape with two ends open, and one end of the opening is provided with a connecting part 2 for connecting with a range hood.

There are no specific restrictions on the structure of the oil guide ring. In this embodiment, as shown in Figure 1, Figure 2, and Figure 3, it also includes: an induced air flanging 3, which is provided in the oil collecting The portion 1 is far away from one end of the oil guiding groove 11, and the air guiding flange 3 extends in the direction of the oil guiding groove 11 and forms a drainage channel for guiding oil fume. The two ends of the oil collecting part 1 are open, the oil guiding groove 11 is set close to one end of the connecting part 2, and the other end extends out of the air guiding flanging 3, which bends in the range enclosed by the oil collecting part 1, and forms a The oil fume is guided into the drainage channel within the scope of the oil collecting part 1. The oil fume enters the range hood through the oil collecting part 1 through the drainage channel. As an alternative embodiment, one end of the oil collecting portion 1 away from the connecting portion 2 is closed.

There is no specific restriction on the shape of the drainage channel. In this embodiment, as shown in FIGS. 1, 3 and 4, the axial cross-sectional area of the drainage channel gradually decreases in the direction close to the connecting portion 2. Since there is a certain gap between the filter screen 7 and the oil collecting part 1, the filter screen 7 is controlled by the motor to rotate, and the oil fume is filtered through the filter screen 7 as much as possible. Therefore, the drainage channel guides the oil fume to gather in the center direction of the filter screen 7, reducing the situation that the oil fume passes through the gap between the filter screen 7 and the oil collecting part 1 without being filtered. As an alternative embodiment, the inner diameter of the drainage channel does not change along the direction in which the oil fume enters. As another alternative embodiment, the inner diameter of the drainage channel gradually becomes larger along the direction in which the oil fume enters.

There is no specific restriction on the connection mode of the induced air flanging 3 and the oil collecting part 1. In this embodiment, as shown in Figs. 3 and 4, the induced air flanging 3 is integrally connected with the oil collecting part 1. In addition, a rounded corner transitions at the connection between the induced draft flange 3 and the oil collecting portion 1. When the range hood works, it guides the external airflow into the range hood, and first passes through the oil guide ring. In this solution, the airflow with oil smoke enters the inside of the range hood through the drainage channel formed by the wind guide flange 3 on the oil guide ring. Since the airflow passes through the oil guide ring at a high level, the airflow collides when it comes into contact with the oil guide ring. In this solution, the excessive rounded corners of the draft flange 3 and the oil collecting part 1 are used to reduce the resistance of air impact and guide the air to gather Drainage channel. Reduce the noise generated when the range hood is working. As an alternative embodiment, the draft flange 3 is welded to the oil collecting part 1. As another alternative embodiment, the draft flange 3 is fixed on the oil collecting part 1 by bolts.

There is no specific restriction on the shape of the oil blocking portion. In this embodiment, as shown in Figs. 3 and 4, at least a part of the oil blocking portion is protruding and forms a collecting groove. After the oil stains are thrown from the filter screen 7, they are hindered by the annular oil retaining part. However, because the oil collecting part 1 is annular, the oil flows along the surface of the oil collecting part 1 to the oil guiding groove 11 by its own kinetic energy and potential energy. However, the volume of a single oil is small, and it is constantly lost due to friction during the process of fitting and flowing. For the smaller oil, the moving path on the oil retaining part is longer, so a single oil is not easy to be led into the oil groove 11 collect. In this solution, because the oil baffle is arranged protruding, when the oil is captured by the oil baffle, the oil baffle protrudes to form a slope or arc. Since the oil itself still has a certain kinetic energy, the oil protrudes toward the oil baffle. Convergence at the exiting position, so that the volume of the oil converges and increases, and flows into the oil guide groove 11 along the protruding part of the oil baffle. As an alternative embodiment, the inner surface of the oil retaining portion facing the filter screen 7 is flat.

There is no specific restriction on the shape of the collection tank. In this embodiment, as shown in Figs. 3 and 4, the cross section of the collection tank is arc-shaped. As an alternative embodiment, the cross section of the collection tank is U-shaped, rectangular or elliptical.

There is no specific restriction on the overall shape of the collecting groove. In this embodiment, as shown in FIG. 1, the inclination of the collecting groove gradually increases in the direction close to the oil guiding groove 11. The flow direction of the oil is toward the oil guide groove 11, and since the collecting groove is annular, the inclination of the ring near the oil guide groove 11 gradually decreases. In this solution, the inclination of the collecting trough in the direction close to the oil guiding trough 11 is increased, so that the oil is not easy to stay at the position with a relatively gentle slope, and the oil collection efficiency is improved. In this embodiment, the specific shape of the increased inclination is that the lower half of the collecting groove, the corresponding arc radius, gradually increases in the direction close to the oil guide groove 11. As an alternative embodiment, the lower half of the collection tank is a broken line structure formed by successively connecting multiple line segments. The inclination angles between different line segments are different, and the inclination angle between each line segment gradually increases in the direction close to the oil guide groove 11. Big. As an alternative embodiment, the collecting tank is circular. As another alternative embodiment, as shown in Fig. 1, the lower half below the B-B section is V-shaped.

There is no specific restriction on the structure of the oil guide ring. In this embodiment, as shown in FIG. 2, it further includes: an oil guide 4 arranged on the oil guide groove 11 and extending toward the outside of the connecting portion 2. The oil collected by the collecting groove of the oil guide 4 extends away from the oil guide ring to facilitate centralized collection and processing.

The connection position of the oil guide 4 is not specifically limited. In this embodiment, as shown in FIG. 2, the oil guide 4 is attached to the oil collecting part 1 and the connecting part 2 to be installed. As an alternative embodiment, the oil guide 4 is attached to the oil collecting part 1 or the connecting part 2 to be installed.

The structure of the oil guide 4 is not specifically limited. In this embodiment, as shown in FIG. 2, the oil guide 4 includes: a mounting portion 41, which is arranged at the oil collecting portion 1 and/or the connecting portion 2 on; rounded surface 43, connecting the oil guide 4 and the mounting portion 41. The oil guide 4 is detachably connected to the oil collecting part 1 and/or the connecting part 2 through the installation part 41, which facilitates cleaning and replacement of the oil guide 4. The installation part 41 and the oil guide 4 are over-connected by the rounded surface 43, so that the installation part 41 and the oil guide 4 have a certain deformation ability. The oil guide 4 and the installation part 41 can be adjusted according to actual needs. To fine-tune the angle.

There is no specific restriction on the connection manner of the mounting part 41 and the oil collecting part 1. In this embodiment, as shown in FIG. 2, the mounting part 41 is fixed to the oil collecting part 1 by bolts. As an alternative embodiment, the mounting portion 41 is welded to the oil collecting portion 1. As another alternative embodiment, the mounting part 41 is pasted on the oil collecting part 1 through an adhesive layer.

There is no specific restriction on the structure of the oil guide 4. In this embodiment, as shown in FIG. 2, the oil guide 4 is symmetrically provided with an oil stopper 42, and the oil stopper 42 is parallel to the oil The flow direction of the liquid extends. The oil stopper 42 is on both sides of the oil flow direction to block the oil, prevent the oil from leaking out, and make the oil flow out from the set outlet.

The connection relationship between the oil stopper 42 and the oil guide 4 is not specifically limited. In this embodiment, the oil stopper 42 and the oil guide 4 are integrally formed by bending.

There are no specific restrictions on the structure of the mounting portion 41. In this embodiment, as shown in FIG. 2, the mounting portion 41 includes a base plate 411, which is attached to the outer wall of the oil guiding groove 11 and/or the oil collecting portion 1 The positioning block 412 is set on the base plate 411 and is set in close contact with the side wall of the oil guiding groove 11. The base plate 411 is located on the side of the oil guide ring away from the connecting portion 2. The oil guide 4 located on the outer side can also be removed and replaced without disassembling the oil guide ring. As an alternative embodiment, the mounting part 41 only includes a base plate 411 for connecting the oil collecting part 1 and/or the oil guiding groove 11.

There is no specific limitation on the shape of the substrate 411. In this embodiment, the surface where the substrate 411 is attached to the oil collecting portion 1 is arc-shaped.

The inclination angle of the oil guide groove 11 and the oil guide 4 is not specifically limited. In this embodiment, as shown in FIG. 2, the included angle between the extending direction of the oil guide groove 11 and the horizontal plane is [0°, 90°], the angle between the extension direction of the oil guide 4 and the horizontal plane is [0,°90°]. With the inclined oil guide groove 11 and the oil guide 4, the oil is gathered together and collected by flowing along the inclined surface by its own gravity. As an alternative embodiment, the angle between the oil guide groove 11 and the horizontal plane is greater than 90°. As another alternative embodiment, the angle between the oil guide 4 and the horizontal plane is greater than 90°.

There are no specific restrictions on the application and installation of the oil guide ring. In this embodiment, as shown in Figures 5 and 6, a range hood includes: a volute 6 including at least one air inlet, and the volute 6 is provided with There is a motor; the filter 7 is located at the output end of the motor, located outside the volute 6, and is located near the air inlet; in the oil guide ring of any one of the above solutions, the connecting portion 2 is installed in the On the volute 6, the oil collecting part 1 surrounds the filter screen 7. The filter screen 7 is installed on the output shaft of the motor. The filter screen 7 is located outside the air inlet of the range hood. The oil guide ring is buckled on the air inlet of the range hood and surrounds the filter screen 7. There is a gap between the filter screen 7 and the oil guide ring. When the filter screen 7 is controlled by the motor to rotate, the oil attached to the filter screen 7 is thrown out toward the surrounding oil guide ring. The oil falls on the oil collecting part 1, converges through the collecting groove, and flows along the collecting groove to the oil guiding groove 11 for concentrated collection.

There are no specific restrictions on the structure of the range hood volute 6. In this embodiment, the volute 6 has two symmetrically arranged air inlets, the motor is a dual-axis motor 8, and the dual-axis motor 8 faces two The air inlet extends out of two output shafts, the number of the filter screens 7 is two, and the two filter screens 7 are respectively arranged on the two output shafts. Suction on both sides at the same time improves the extraction efficiency of oil fume. In addition, the filter screens 7 on both sides are surrounded by oil guide rings, and the oil on the filter screens 7 on both sides is collected at the same time.

There is no specific restriction on the installation structure of the motor. In this embodiment, as shown in Figures 5 and 6, it further includes a mounting frame 81, which is arranged at the position of the air inlet, and the motor is detachably arranged at the mounting The frame 81 extends into the inner part of the volute 6.

The structure for installing the oil guide ring corresponding to the exposed side of the mounting frame 81 is not specifically limited. In this embodiment, as shown in FIGS. 6, 7, and 8, corresponding to the exposed side of the mounting frame 81 For the oil guide ring, the connecting portion 2 is provided with a connecting head extending away from the center of the connecting portion 2, and the volute 6 is provided with an inserting portion 6121 connected with the connecting head. The volute 6 is connected to the insertion part 6121 through a connector, and at the same time, a relief groove 22 is provided on the volute 6 for the exposed part of the mounting frame 81. The relief groove 22 is located on the connecting part 2 and the oil collecting part 1, and the relief groove 22 It is recessed in a direction away from the connecting portion 2.

There is no specific restriction on the oil collection structure of the range hood. In this embodiment, as shown in FIG. 5, it further includes: an oil guide plate 5, which is detachable from the volute 6 through a connecting end 51 Connected, the other end is set away from the volute 6, and the outlet end of the oil guide 4 extends above the oil guide plate 5. Since there are oil guide rings on both sides of the volute 6, the collected oil is led out through the oil guide 4 on both sides. The oil guide plate 5 in this scheme collects the oil flowing out of the oil guide 4 and performs Centralized collection and processing.

There is no specific restriction on the setting method of the oil guide plate 5. In this embodiment, the oil guide plate 5 is arranged obliquely. As an alternative embodiment, the oil guide plate 5 is arranged horizontally.

Obviously, the foregoing embodiments are merely examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, other changes or modifications in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all the implementation methods here. The obvious changes or changes derived from this are still within the scope of protection created by this disclosure.

Claims

An oil guide ring, including:

The oil collecting portion (1), the oil collecting portion (1) is provided with an annular oil retaining portion, and an oil guiding groove (11) connected to the oil retaining portion, and the inlet of the oil guiding groove (11) is provided in the collecting On the inner surface of the oil part (1);

The connecting portion (2) is provided on the oil collecting portion (1) and extends in a direction away from the oil collecting portion (1).
The oil guide ring according to claim 1, further comprising:

The induced air flanging (3), the induced air flanging (3) is arranged at the end of the oil collecting part (1) away from the oil introduction groove (11), and the induced air flanging (3) faces the The oil drainage groove (11) extends in the direction and forms a drainage channel for guiding oil fume.
The oil guide ring according to claim 2, wherein the axial cross-sectional area of the drainage channel gradually decreases in the direction close to the connecting portion (2).
The oil guide ring according to claim 2, wherein the draft flanging (3) is integrally connected with the oil collecting part (1), and the draft flanging (3) is connected to the oil collecting part (1). (1) The joints are transitioned by rounded corners.
The oil guide ring according to claim 1, wherein at least a part of the oil retaining portion is protrudingly provided and forms a collecting groove (12).
The oil guide ring according to claim 1, wherein the inclination of the collecting groove (12) gradually increases in a direction close to the oil guide groove (11).
The oil guide ring according to any one of claims 1 to 6, which further comprises:

The oil guide (4) is arranged on the oil guide groove (11) and extends toward the outside of the connecting portion (2).
The oil guide ring according to any one of claims 7, wherein the oil guide (4) comprises:

The mounting part (41) is arranged on the oil collecting part (1) and/or the connecting part (2);

A rounded surface (43) connects the oil guide (4) and the mounting part (41).
The oil guide ring according to any one of claim 7, wherein the oil guide (4) is symmetrically provided with an oil stopper (42), and the oil stopper (42) runs along a line parallel to the oil The flow direction extends.
The oil guide ring according to any one of claims 8, wherein the mounting portion (41) comprises:

The base plate (411) is arranged to be attached to the outer wall of the oil guiding groove (11) and/or the oil collecting part (1);

The positioning block (412) is arranged on the base plate (411) and is arranged in close contact with the side wall of the oil guide groove (11).
The oil guiding ring according to claim 7, wherein the angle between the extending direction of the oil guiding groove and the horizontal plane is [0°, 90°], and the extending direction of the oil guiding member (4) is the same as The included angle between the horizontal planes is [0,°90°].
A range hood, including:

The volute (6) includes at least one air inlet, and a motor is provided in the volute (6);

The filter screen (7) is arranged at the output end of the motor, on the outside of the volute (6), and is arranged near the air inlet;

The oil guide ring according to any one of claims 1 to 11, the connecting portion (2) is mounted on the volute (6), and the oil collecting portion (1) surrounds the filter screen (7).
The range hood according to claim 12, wherein the volute (6) has two symmetrically arranged air inlets, the motor is a dual-axis motor (8), and the dual-axis motor (8) Two output shafts extend toward the two air inlets, the number of the filter screens (7) is two, and the two filter screens (7) are respectively arranged on the two output shafts.
The range hood according to claim 13, which further comprises:

The mounting frame (81) is arranged at the position of the air inlet, and the motor is detachably arranged at the part of the mounting frame (81) that extends into the interior of the volute (6).
The range hood according to claim 14, wherein, corresponding to the oil guide ring provided on the exposed side of the mounting frame (81), the connecting portion (2) is provided with a direction away from the connecting portion ( 2) A connector (21) extending in the direction of the center of the circle, the volute (6) is provided with an insertion portion (61) connected with the connector (21).
A range hood according to any one of claims 12-15, which further comprises:

An oil guide plate (5), the oil guide plate (5) is detachably connected to the volute (6) through a connecting end (51), and the other end is set away from the volute (6), and the oil guide The outlet end of (4) extends above the oil guide plate (5).