Oil guide ring and range hood with the same

Abstract

The present invention provides an oil guide ring and a range hood with the oil guide ring, the oil guide ring comprising: an oil collecting portion, the oil collecting portion being provided with an annular oil baffle portion, and an oil guide groove connected to the oil baffle portion, the inlet of the oil guide groove being provided on the inner surface of the oil collecting portion; a connecting portion being provided on the oil collecting portion and extending in a direction away from the oil collecting portion. The annular oil baffle portion surrounds the filter screen, and when the filter screen rotates, the oil is thrown out of the filter screen and blocked by the oil collecting portion. The oil collecting portion is annular, and the oil smoke flows and converges along the inner surface of the oil collecting portion, and finally flows out in a concentrated manner through the oil guide groove. The annular oil collecting portion has a certain width, so that it forms a shape with two openings at both ends, and one of the openings is provided with a connecting portion for connecting to the range hood.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to an oil guide ring and a range hood with the oil guide ring. Background Art

[0002] Range hoods are commonly used kitchen equipment. During use, they suck away oil smoke and exhaust it from the room. Range hoods are usually equipped with filters. When oil smoke passes through the filters, the oil will adhere to the filters, motors, and fan blades. As the range hood is used for a longer time, more oil will adhere to it, which will increase the load on the fan system and reduce the working efficiency of the range hood. In addition, as more and more oil adheres to the filter, the actual opening area of ​​the filter becomes smaller, thereby increasing the resistance to the entry of oil smoke, increasing the force on the filter when it absorbs air, and increasing the vibration, thereby increasing the noise generated when the range hood is working.

[0003] The prior art proposes a new type of range hood, in which the filter is set as a rotatable dynamic filter, and the filter can be controlled by a driving mechanism to rotate. When the oil smoke passes through, the oil stains adhere to the rotating filter. Since the filter is rotating, the oil stains will be thrown out along the circumferential edge of the filter due to the centrifugal force, and it is not easy to collect and process. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that oil stains are thrown out by the rotating filter and are difficult to collect, thereby providing an oil guide ring and a range hood with the oil guide ring.

[0005] The present invention provides an oil guide ring, comprising:

[0006] An oil collecting portion, wherein the oil collecting portion is provided with an annular oil baffle portion and an oil guide groove connected to the oil baffle portion, and an inlet of the oil guide groove is provided on an inner surface of the oil collecting portion;

[0007] The connecting portion is arranged on the oil collecting portion and extends in a direction away from the oil collecting portion.

[0008] Also includes:

[0009] The air induction flange is arranged at one end of the oil collecting portion away from the oil induction groove, and the air induction flange extends toward the oil induction groove to form a drainage channel for guiding oil smoke.

[0010] The axial cross-sectional area of ​​the drainage channel gradually decreases in a direction approaching the connecting portion.

[0011] The air inducing flange is integrally connected with the oil collecting portion, and the connection between the air inducing flange and the oil collecting portion is transitioned by a rounded corner.

[0012] At least a portion of the oil retaining portion is protrudingly arranged to form a collecting groove.

[0013] The inclination of the collecting groove gradually increases in a direction approaching the oil guiding groove.

[0014] Also includes:

[0015] The oil guide member is arranged on the oil guide groove and extends toward the outside of the connecting portion.

[0016] The oil guide member comprises:

[0017] A mounting portion, disposed on the oil collecting portion and / or the connecting portion;

[0018] A rounded surface connects the oil guide member and the mounting portion.

[0019] The oil guide member is symmetrically provided with oil baffles, and the oil baffles extend in parallel with the flow direction of the oil.

[0020] The mounting portion comprises:

[0021] A base plate is arranged in contact with the outer wall of the oil guide groove and / or the oil collecting portion;

[0022] The positioning block is arranged on the base plate and is arranged in contact with the side wall of the oil guide groove.

[0023] The included angle between the extending direction of the oil guide groove and the horizontal plane is [0°, 90°], and the included angle between the extending direction of the oil guide member and the horizontal plane is [0, °90°].

[0024] The present invention also provides a range hood, comprising:

[0025] A volute, comprising at least one air inlet, wherein a motor is arranged in the volute;

[0026] A filter screen is arranged at the output end of the motor, outside the volute, and close to the air inlet;

[0027] In the oil guide ring described in any of the above schemes, the connecting portion is installed on the volute, and the oil collecting portion surrounds the filter.

[0028] The volute has two symmetrically arranged air inlets, the motor is a double-shaft motor, and the double-shaft motor extends two output shafts toward the two air inlets. There are two filters, and the two filters are respectively arranged on the two output shafts.

[0029] Also includes:

[0030] The mounting frame is arranged at the air inlet position, and the motor is detachably arranged on the portion of the mounting frame extending into the interior of the volute.

[0031] Corresponding to the oil guide ring disposed on the exposed side of the mounting frame, the connecting portion is provided with a connecting head extending in a direction away from the center of the connecting portion, and the volute is provided with an inserting portion connected to the connecting head.

[0032] Also includes:

[0033] An oil guide plate 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 to above the oil guide plate.

[0034] The technical solution of the present invention has the following advantages:

[0035] 1. The oil guide ring provided by the present invention comprises: an oil collecting portion, the oil collecting portion is provided with an annular oil baffle portion, and an oil guide groove connected to the oil baffle portion, the inlet of the oil guide groove is arranged on the inner surface of the oil collecting portion; a connecting portion, which is arranged on the oil collecting portion and extends in a direction away from the oil collecting portion.

[0036] The annular oil retaining part surrounds the filter. When the filter rotates, the oil is thrown out of the filter and blocked by the oil collecting part. The oil collecting part is annular, and the oil smoke flows and gathers 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 openings at both ends, and one of the openings is provided with a connecting part for connecting to the range hood.

[0037] 2. The oil guide ring provided by the present invention further includes: an air-inducing flange, wherein the air-inducing flange is arranged at one end of the oil collecting portion away from the oil-inducing groove, and the air-inducing flange extends toward the oil-inducing groove to form a drainage channel for guiding oil smoke.

[0038] The oil collecting part has openings at both ends, an oil guide groove is provided near one end of the connecting part, and an air guide flange is extended from the other end, the air guide flange is bent toward the range surrounded by the oil collecting part, and forms a drainage channel for guiding the oil smoke into the range of the oil collecting part. The oil smoke passes through the oil collecting part through the drainage channel and enters the range hood.

[0039] 3. In the oil guide ring provided by the present invention, the axial cross-sectional area of ​​the drainage channel gradually decreases in the direction approaching the connecting portion.

[0040] Since there is a certain gap between the filter and the oil collecting part, the filter is controlled by the motor to rotate, and the oil smoke is filtered through the filter as much as possible. Therefore, the drainage channel guides the oil smoke to gather toward the center of the filter, reducing the situation where the oil smoke passes through the gap between the filter and the oil collecting part without being filtered.

[0041] 4. In the oil guide ring provided by the present invention, the air inducing flange is integrally connected with the oil collecting portion, and the connection between the air inducing flange and the oil collecting portion is transitioned by a rounded corner.

[0042] When the range hood is working, the external airflow is guided into the range hood, first passing through the oil guide ring. In this solution, the airflow with oil smoke enters the range hood through the drainage channel formed by the air guide flange on the oil guide ring. Since the airflow passes through the oil guide ring at a high altitude, the airflow collides with the oil guide ring when it contacts it. In this solution, the air impact resistance is reduced by the air guide flange with excessive rounded corners and the oil collection part, and the air is guided to gather and enter the drainage channel. The noise generated when the range hood is working is reduced.

[0043] 5. In the oil guide ring provided by the present invention, at least a portion of the oil retaining portion is protrudingly arranged to form a collecting groove.

[0044] After the oil stains are thrown out of the filter, they are blocked by the annular oil baffle. However, since 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 continuously lost due to friction during the fitting flow process. For oils with smaller volumes, the moving path on the oil baffle is longer, so a single oil is not easily collected by the oil guide groove. In this solution, since the oil baffle is protruding, when the oil is captured by the oil baffle, the oil baffle protrudes to form an inclined surface or an arc surface. Since the oil itself still has a certain kinetic energy, the oil converges to the protruding position of the oil baffle, thereby increasing the volume of the oil and flowing into the oil guide groove along the protruding part of the oil baffle.

[0045] 6. In the oil guide ring provided by the present invention, the inclination of the collecting groove gradually increases in the direction approaching the oil guide groove.

[0046] The oil flows in the direction of the oil guide groove. Since the collecting groove is annular, the inclination of the ring gradually becomes gentler near the oil guide groove. In this scheme, the inclination of the collecting groove in the direction near the oil guide groove is increased, so that the oil is not easy to stay in the relatively gentle inclination part, thereby improving the collection efficiency of the oil.

[0047] 7. The oil guide ring provided by the present invention further includes: an oil guide member, which is arranged on the oil guide groove and extends toward the outer side of the connecting portion.

[0048] The oil guide collection groove captures the collected oil and extends away from the oil guide ring to facilitate centralized collection and processing.

[0049] 8. The oil guide ring provided by the present invention, wherein the oil guide member comprises: a mounting portion, disposed on the oil collecting portion and / or the connecting portion; and a rounded surface, connecting the oil guide member and the mounting portion.

[0050] The oil guide member is detachably connected through the mounting portion and the oil collecting portion and / or the connecting portion, which facilitates cleaning and replacement of the oil guide member. The mounting portion and the oil guide member are connected through a rounded surface, so that the mounting portion and the oil guide member have a certain deformation capacity, and the angle between the oil guide member and the mounting portion can be fine-tuned according to actual needs.

[0051] 9. In the oil guide ring provided by the present invention, the oil guide member is symmetrically provided with an oil baffle member, and the oil baffle member extends in a direction parallel to the flow direction of the oil.

[0052] The oil blocking parts are on both sides of the flow direction of the oil to block the oil and prevent the oil from leaking out, so that the oil flows out from the set outlet.

[0053] 10. The oil guide ring provided by the present invention, the mounting portion comprises: a base plate, arranged to fit the outer wall of the oil guide groove and / or the oil collecting portion; a positioning block, arranged on the base plate, arranged to fit the side wall of the oil guide groove.

[0054] The base plate is arranged on a side of the oil guide ring away from the connecting portion, and the oil guide member located on the outer side can be removed and replaced without disassembling the oil guide ring.

[0055] 11. In the oil guide ring provided by the present invention, 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 member and the horizontal plane is [0, °90°].

[0056] The oil guide grooves and oil guide parts are arranged obliquely, and the oil is gathered together and flows along the inclined surface by its own gravity and is collected.

[0057] 12. The range hood provided by the present invention comprises: a volute, comprising at least one air inlet, wherein a motor is arranged inside the volute; a filter is arranged at the output end of the motor, located outside the volute, and arranged close to the air inlet; the oil guide ring described in any of the above schemes, wherein the connecting portion is installed on the volute, and the oil collecting portion surrounds the filter.

[0058] The filter is installed on the output shaft of the motor. The filter 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. There is a gap between the filter and the oil guide ring. When the filter is controlled by the motor to rotate, the oil attached to the filter is thrown toward the surrounding oil guide ring. The oil falls on the oil collection part, gathers through the collection groove and flows along the collection groove to the oil guide groove for centralized collection.

[0059] 13. In the range hood provided by the present invention, the volute has two symmetrically arranged air inlets, the motor is a double-axis motor, the double-axis motor extends two output shafts toward the two air inlets, there are two filters, and the two filters are respectively arranged on the two output shafts.

[0060] The dual-side suction improves the efficiency of oil fume extraction. The filter screens on both sides are surrounded by oil guide rings to collect the oil on the filter screens on both sides at the same time.

[0061] 14. The range hood provided by the present invention further comprises: a mounting bracket, which is arranged at the air inlet position, and the motor is detachably arranged on the portion of the mounting bracket extending into the interior of the volute.

[0062] 15. The range hood provided by the present invention has an oil guide ring arranged on the exposed side of the mounting frame, the connecting portion is provided with a connecting head extending in a direction away from the center of the connecting portion, and the volute is provided with an insertion portion connected to the connecting head.

[0063] The volute is connected to the insertion part through a connector, and a clearance groove is provided on the volute for the exposed part of the mounting frame. The clearance groove is located on the connecting part and the oil collecting part, and the clearance groove is recessed in a direction away from the connecting part.

[0064] 16. The range hood provided by the present invention further includes: an oil guide plate, which is detachably connected to the volute via a connecting end, and the other end is arranged away from the volute, and the outlet end of the oil guide member extends to above the oil guide plate.

[0065] Since oil guide rings are provided on both sides of the volute, the collected oil is discharged through the oil guide pieces on both sides. The oil guide plate in this solution collects the oil flowing out of the oil guide pieces and collects and processes it in a centralized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0067] Figure 1 A schematic diagram showing the structure of the oil guide ring when viewed from the direction of the connection portion;

[0068] Figure 2 An exploded view showing the connection relationship between the oil guide ring and the oil guide member;

[0069] Figure 3 for Figure 1 A-A in the figure represents the cross-sectional view of the oil guide ring structure;

[0070] Figure 4 for Figure 1 B-B in the middle represents the cross-sectional view of the oil guide ring structure;

[0071] Figure 5 A three-dimensional diagram of the structure in which the oil guide ring is installed on the volute;

[0072] Figure 6 An exploded view showing the structure of the oil guide ring installed on the volute;

[0073] Figure 7 An exploded view of the structure of the oil guide ring installed on the corresponding mounting frame;

[0074] Figure 8 To express Figure 7 A three-dimensional view of the structure of the center oil guide ring from another perspective.

[0075] Description of reference numerals:

[0076] 1. Oil collecting part; 11. Oil guide groove; 2. Connecting part; 21. Connecting head; 22. Give way groove; 3. Air induction flange; 4. Oil guide part; 41. Mounting part; 411. Base plate; 412. Positioning block; 42. Oil retaining part; 43. Fillet surface; 5. Oil guide plate; 51. Connecting end; 6. Volute; 61. Insertion part; 7. Filter; 8. Dual-axis motor; 81. Mounting frame; 9. Air guide ring. DETAILED DESCRIPTION

[0077] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0078] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0079] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0081] Example 1

[0082] This embodiment provides an oil guide ring, such as Figure 1 As shown, it includes: an oil collecting part 1, the oil collecting part 1 is provided with an annular oil baffle part, and an oil guide groove 11 connected to the oil baffle part, and the inlet of the oil guide groove 11 is provided on the inner surface of the oil collecting part 1; a connecting part 2, which is provided on the oil collecting part 1 and extends in a direction away from the oil collecting part 1. The annular oil baffle part surrounds the filter screen 7. When the filter screen 7 rotates, the oil is thrown out from the filter screen 7 and blocked by the oil collecting part 1. The oil collecting part 1 is annular, and the oil smoke flows and converges along the inner surface of the oil collecting part 1, and finally flows out through the oil guide groove 11. The annular oil collecting part 1 has a certain width, so it forms a shape with two openings at both ends, and one of the openings is provided with a connecting part 2 for connecting to a range hood.

[0083] There is no specific restriction on the structure of the oil guide ring. In this embodiment, Figure 1 , Figure 2 , Figure 3 As shown, it also includes: an air induction flange 3, which is arranged at one end of the oil collecting part 1 away from the oil induction groove 11, and the air induction flange 3 extends toward the oil induction groove 11 to form a drainage channel for guiding the oil smoke. The oil collecting part 1 has openings at both ends, and the oil induction groove 11 is arranged at one end close to the connecting part 2, and the air induction flange 3 extends from the other end. The air induction flange 3 is bent into the range surrounded by the oil collecting part 1, and forms a drainage channel for guiding the oil smoke into the range of the oil collecting part 1. The oil smoke passes through the oil collecting part 1 through the drainage channel and enters the range hood. As an alternative embodiment, the end of the oil collecting part 1 away from the connecting part 2 is a stopper.

[0084] There is no specific limitation on the shape of the drainage channel. In this embodiment, Figure 1 , Figure 3 , Figure 4 As shown, the axial cross-sectional area of ​​the drainage channel gradually decreases in the direction approaching the connecting portion 2. Since a certain gap is left between the filter 7 and the oil collecting portion 1, the filter 7 is controlled by the rotation of the motor, and the oil smoke is filtered through the filter 7 as much as possible. Therefore, the drainage channel guides the oil smoke to gather toward the center of the filter 7, thereby reducing the situation where the oil smoke passes through the gap between the filter 7 and the oil collecting portion 1 without being filtered. As an alternative embodiment, the inner diameter of the drainage channel remains unchanged along the direction in which the oil smoke enters. As another alternative embodiment, the inner diameter of the drainage channel gradually increases along the direction in which the oil smoke enters.

[0085] There is no specific restriction on the connection method between the air induction flange 3 and the oil collecting part 1. In this embodiment, Figure 3 , Figure 4As shown, the draft flange 3 is integrally connected with the oil collecting part 1, and the connection between the draft flange 3 and the oil collecting part 1 is transitioned by a rounded corner. When the range hood is working, the external airflow is guided into the interior of the range hood, and first passes through the oil guide ring. In this solution, the airflow with oil smoke enters the interior of the range hood through the drainage channel formed by the draft flange 3 on the oil guide ring. Since the airflow passes through the oil guide ring at a high altitude, the airflow collides with the oil guide ring when it contacts it. In this solution, the draft flange 3 with a transition of rounded corners and the oil collecting part 1 reduce the resistance of the air collision, and guide the air to gather into the drainage channel. The noise generated when the range hood is working is reduced. 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 to the oil collecting part 1 by bolts.

[0086] There is no specific limitation on the shape of the oil retaining portion. In this embodiment, Figure 3 , Figure 4 As shown, at least a part of the oil baffle is protruding and forms a collecting groove. After the oil stains are thrown out from the filter 7, they are blocked by the annular oil baffle. However, since the oil collecting part 1 is annular, the oil flows along the surface of the oil collecting part 1 to the oil guide groove 11 by its own kinetic energy and potential energy. However, the volume of a single oil is small, and it is continuously lost due to friction during the fitting flow process. For oils with smaller volumes, the moving path on the oil baffle is longer, so a single oil is not easily collected by the oil guide groove 11. In this solution, since the oil baffle is protruding, when the oil is captured by the oil baffle, the oil baffle protrudes to form an inclined surface or an arc surface. Since the oil itself still has a certain kinetic energy, the oil converges to the protruding position of the oil baffle, thereby increasing the volume of the oil and flowing into the oil guide groove 11 along the protruding part of the oil baffle. As an alternative embodiment, the inner surface of the oil baffle facing the filter 7 is a plane.

[0087] There is no specific limitation on the shape of the collecting tank. Figure 3 , Figure 4 As shown, the cross section of the collecting groove is in the shape of an arc. As an alternative embodiment, the cross section of the collecting groove is in the shape of a U, a rectangle or an ellipse.

[0088] There is no specific limitation on the overall shape of the collecting tank. In this embodiment, Figure 1As shown, 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 to flow in the direction of the oil guiding groove 11. Since the collecting groove is annular, the inclination of the ring gradually becomes gentler at the part close to the oil guiding groove 11. In this scheme, the inclination of the collecting groove in the direction close to the oil guiding groove 11 is increased, so that the oil is not easy to stay in the part with a relatively gentle inclination, thereby improving the collection efficiency of the oil. In this embodiment, the specific shape of the increased inclination is that the corresponding arc radius of the lower half of the collecting groove gradually increases in the direction close to the oil guiding groove 11. As an alternative embodiment, the lower half of the collecting groove is a zigzag structure composed of multiple line segments connected in sequence, and the inclination angles between different line segments are different. The inclination angles between each line segment gradually increase in the direction close to the oil guiding groove 11. As an alternative embodiment, the collecting groove is circular. As another alternative embodiment, such as Figure 1 As shown, the lower part below the B-B section is V-shaped.

[0089] There is no specific restriction on the structure of the oil guide ring. In this embodiment, Figure 2 As shown, it also includes: an oil guide member 4, which is arranged on the oil guide groove 11 and extends toward the outside of the connecting portion 2. The collecting groove of the oil guide member 4 captures the collected oil and extends away from the oil guide ring to facilitate centralized collection and processing.

[0090] There is no specific restriction on the connection position of the oil guide member 4. In this embodiment, Figure 2 As shown, the oil guide member 4 is installed in contact with the oil collecting portion 1 and the connecting portion 2. As an alternative embodiment, the oil guide member 4 is installed in contact with the oil collecting portion 1 or the connecting portion 2.

[0091] There is no specific limitation on the structure of the oil guide member 4. In this embodiment, Figure 2 As shown, the oil guide member 4 includes: a mounting portion 41, which is arranged on the oil collecting portion 1 and / or the connecting portion 2; and a rounded surface 43, which connects the oil guide member 4 and the mounting portion 41. The oil guide member 4 is detachably connected to the oil collecting portion 1 and / or the connecting portion 2 through the mounting portion 41, which facilitates cleaning and replacement of the oil guide member 4. The mounting portion 41 and the oil guide member 4 are connected in a transitional manner through the rounded surface 43, so that the mounting portion 41 and the oil guide member 4 have a certain deformation capacity, and the angle between the oil guide member 4 and the mounting portion 41 can be fine-tuned according to actual needs.

[0092] There is no specific limitation on the connection method between the mounting portion 41 and the oil collecting portion 1. In this embodiment, Figure 2 As shown, the mounting portion 41 is fixed to the oil collecting portion 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 portion 41 is adhered to the oil collecting portion 1 by an adhesive layer.

[0093] There is no specific limitation on the structure of the oil guide member 4. In this embodiment, Figure 2 As shown, the oil guide member 4 is symmetrically provided with oil blocking members 42, and the oil blocking members 42 extend in parallel with the flow direction of the oil. The oil blocking members 42 are on both sides of the flow direction of the oil to block the oil and prevent the oil from leaking out, so that the oil flows out from the set outlet.

[0094] There is no specific limitation on the connection relationship between the oil blocking member 42 and the oil guiding member 4. In the present embodiment, the oil blocking member 42 and the oil guiding member 4 are integrally bent and formed.

[0095] There is no specific limitation on the structure of the mounting portion 41. In this embodiment, Figure 2 As shown, the mounting portion 41 includes: a base plate 411, which is arranged in contact with the outer wall of the oil guide groove 11 and / or the oil collecting portion 1; and a positioning block 412, which is arranged on the base plate 411 and is arranged in contact with the side wall of the oil guide groove 11. The base plate 411 is arranged on a side of the oil guide ring away from the connecting portion 2. Without disassembling the oil guide ring, the oil guide member 4 located on the outer side can also be removed and replaced. As an alternative embodiment, the mounting portion 41 only includes the base plate 411 for connecting the oil collecting portion 1 and / or the oil guide groove 11.

[0096] There is no specific limitation on the shape of the substrate 411. In this embodiment, the surface of the substrate 411 that contacts the oil collecting portion 1 is arc-shaped.

[0097] There is no specific limitation on the inclination angles of the oil guide groove 11 and the oil guide member 4. Figure 2 As shown, the angle between the extension direction of the oil guide groove 11 and the horizontal plane is [0°, 90°], and the angle between the extension direction of the oil guide member 4 and the horizontal plane is [0°, °90°]. The oil guide groove 11 and the oil guide member 4 are arranged obliquely, and the oil is collected by flowing along the inclined surface due to 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 member 4 and the horizontal plane is greater than 90°.

[0098] There is no specific restriction on the application and installation of the oil guide ring. In this embodiment, Figure 5 , Figure 6As shown, a range hood comprises: a volute 6, including at least one air inlet, wherein the volute 6 is provided with a motor; a filter 7, which is provided at the output end of the motor, located outside the volute 6, and arranged close to the air inlet; the oil guide ring described in any of the above schemes, wherein the connecting portion 2 is installed on the volute 6, and the oil collecting portion 1 surrounds the filter 7. The filter 7 is installed on the output shaft of the motor, and the filter 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 7. There is a gap between the filter 7 and the oil guide ring, and when the filter 7 is controlled by the motor to rotate, the oil attached to the filter 7 is thrown toward the surrounding oil guide ring. The oil falls on the oil collecting portion 1, is gathered through the collecting groove, and flows along the collecting groove to the oil guide groove 11 for centralized collection.

[0099] There is no specific restriction on the structure of the volute 6 of the range hood. In this embodiment, the volute 6 has two symmetrically arranged air inlets, the motor is a dual-shaft motor 8, and the dual-shaft motor 8 extends two output shafts toward the two air inlets. There are two filters 7, and the two filters 7 are respectively arranged on the two output shafts. The simultaneous air suction on both sides improves the extraction efficiency of oil smoke. The filters 7 on both sides are surrounded by oil guide rings to collect oil on the filters 7 on both sides at the same time.

[0100] There is no specific restriction on the installation structure of the motor. In this embodiment, Figure 5 , Figure 6 As shown, it also includes: a mounting bracket 81, which is arranged at the air inlet position, and the motor is detachably arranged on the part of the mounting bracket 81 extending into the interior of the volute 6.

[0101] There is no specific limitation on the structure of installing the oil guide ring on the exposed side of the mounting frame 81. Figure 6 , Figure 7 , Figure 8 As shown, an oil guide ring is provided corresponding to the exposed side of the mounting frame 81, a connecting head 21 is provided on the connecting portion 2 to extend in a direction away from the center of the connecting portion 2, and an inserting portion 61 connected to the connecting head 21 is provided on the volute 6. The volute 6 is connected to the inserting portion 61 through the connecting head 21, and a clearance groove 22 is provided on the volute 6 for the exposed portion of the mounting frame 81. The clearance groove 22 is located on the connecting portion 2 and the oil collecting portion 1, and the clearance groove 22 is recessed in a direction away from the connecting portion 2.

[0102] There is no specific limitation on the oil collecting structure of the range hood. In this embodiment, Figure 5As shown, it also includes: an oil guide plate 5, which is detachably connected to the volute 6 through a connecting end 51, and the other end is arranged away from the volute 6, and the outlet end of the oil guide member 4 extends to the top of the oil guide plate 5. Since oil guide rings are arranged on both sides of the volute 6, the collected oil is guided out through the oil guide member 4 on both sides. The oil guide plate 5 in this solution collects the oil flowing out of the oil guide member 4 and collects and processes it in a centralized manner.

[0103] There is no specific limitation on the arrangement of the oil guide plate 5. In the present embodiment, the oil guide plate 5 is arranged at an angle. As an alternative embodiment, the oil guide plate 5 is arranged horizontally.

[0104] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A range hood, characterized in that: include: A volute (6) comprising at least one air inlet, wherein a motor is arranged in the volute (6); A filter (7) is arranged at the output end of the motor, located outside the volute (6), and close to the air inlet; The oil guide ring comprises an oil collecting portion (1), the oil collecting portion (1) being provided with an annular oil baffle portion, and an oil guide groove (11) connected to the oil baffle portion, the inlet of the oil guide groove (11) being provided on the inner surface of the oil collecting portion (1); a connecting portion (2) being provided on the oil collecting portion (1) and extending in a direction away from the oil collecting portion (1); the connecting portion (2) being mounted on the volute (6); the annular oil baffle portion surrounding the filter screen (7); a certain gap being left between the filter screen (7) and the oil collecting portion (1), and the filter screen (7) being controlled The motor rotates; an air induction flange (3), the air induction flange (3) being arranged at one end of the oil collecting portion (1) away from the oil induction groove (11), the air induction flange (3) extending in the direction of the oil induction groove (11) and forming a drainage channel for guiding oil smoke; the axial cross-sectional area of ​​the drainage channel gradually decreases in the direction approaching the connecting portion (2); at least a part of the oil baffle portion is protrudingly arranged and forms a collecting groove (12); an oil guide member (4) being arranged on the oil induction groove (11) and extending in the direction of the outside of the connecting portion (2).

2. The range hood according to claim 1, characterized in that: The air inducing flange (3) is integrally connected to the oil collecting portion (1), and the connection between the air inducing flange (3) and the oil collecting portion (1) is transitioned by a rounded corner.

3. The range hood according to claim 2, characterized in that: The inclination of the collecting groove (12) gradually increases in a direction approaching the oil guiding groove (11).

4. The range hood according to any one of claims 1 to 3, characterized in that: The oil guide member (4) comprises: A mounting portion (41) is provided on the oil collecting portion (1) and / or the connecting portion (2); The rounded surface (43) connects the oil guide member (4) and the mounting portion (41).

5. The range hood according to any one of claims 1 to 3, characterized in that: An oil blocking member (42) is symmetrically arranged on the oil guide member (4), and the oil blocking member (42) extends in parallel with the flow direction of the oil.

6. The range hood according to claim 4, characterized in that: The mounting portion (41) comprises: A base plate (411) is arranged to fit the outer wall of the oil guide groove (11) and / or the oil collecting portion (1); The positioning block (412) is disposed on the base plate (411) and is arranged in contact with the side wall of the oil guide groove (11).

7. The range hood according to claim 1, characterized in that: The volute (6) has two symmetrically arranged air inlets, the motor is a double-shaft motor (8), the double-shaft motor (8) extends two output shafts toward the two air inlets, there are two filters (7), and the two filters (7) are respectively arranged on the two output shafts.

8. The range hood according to claim 7, characterized in that: Also includes: The mounting frame (81) is arranged at the air inlet position, and the motor is detachably arranged on the portion of the mounting frame (81) extending into the interior of the volute (6).

9. The range hood according to claim 8, characterized in that: The oil guide ring is arranged corresponding to the exposed side of the mounting frame (81), the connecting portion (2) is provided with a connecting head (21) extending in a direction away from the center of the connecting portion (2), and the volute (6) is provided with an inserting portion (61) connected to the connecting head (21).

10. A range hood according to any one of claims 7 to 9, characterized in that: Also includes: An oil guide plate (5) is detachably connected to the volute (6) via a connecting end (51), and the other end is arranged away from the volute (6); the outlet end of the oil guide member (4) extends above the oil guide plate (5).

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