Air collecting device and range hood with same

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to an air collecting device and a range hood with the same. The air collecting device comprises an air collecting box, an air outlet connector and an oil cup. The air collecting box is provided with an exhaust inlet, an air outlet and an oil discharge hole; the air outlet connector is connected to the air outlet and provided with an air outlet channel communicated with the interior of the air collecting box, a connecting groove is formed in the upper surface of the air outlet connector and used for being connected with an air pipe, an oil guide groove is formed in the inner wall of the air outlet channel, and an oil outlet is formed in the side, close to the oil discharge hole, of the oil guide groove. A first oil guide surface is formed on the part, aligned with the oil outlet, of the inner wall of the air outlet channel, the connecting groove is communicated with an oil way of the oil guide groove, and oil in the connecting groove and the oil guide groove flows out through the oil outlet and flows into the air collecting box along the first oil guide surface; and the oil cup is connected below the air collecting box and is aligned with the oil discharge hole. The utility model aims to solve the problem that oil is easily collected in a pipeline of an air pipe due to the fact that an existing air collecting device is difficult to guide oil at an air outlet of the air collecting device.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, and in particular to an air collecting device and a range hood having the same. Background Art

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. The range hood is usually installed above the kitchen stove. The main function of the range hood is to quickly extract the waste from the stove combustion and the oil smoke generated during the cooking process that is harmful to the human body and discharge it outdoors. At the same time, the oil liquid after the oil smoke condenses is collected. The working principle of the range hood mainly includes three steps: oil smoke suction, oil smoke separation, and residual gas discharge. After the range hood is powered on, the motor rotates at high speed, driving the impeller to rotate at high speed at the same time, forming a vortex negative pressure area, and sucking the oil smoke gas into the body. After the oil smoke passes through the filter and the centrifugal force, the oil smoke is separated and finally discharged through the check valve and the exhaust pipe.

[0003] At present, the range hood mainly includes an air collecting device, an exhaust system, a control system and an oil fume collection system, etc. Among them, the air outlet of the air collecting device is connected to the air duct, and the air outlet of the air collecting device is vertically opened. The existing air outlet joint of the air collecting device is difficult to guide the oil flowing down in the air duct, so that when the user uses the range hood for a long time, the oil in the air duct is difficult to flow down smoothly for collection, so that the oil is easy to collect in the air duct, and the oil fume is easy to be blocked after entering the air duct, thereby affecting the service life of the range hood. Utility Model Content

[0004] The utility model provides an air collecting device and a range hood having the same, so as to solve the problem that the existing air collecting device is difficult to guide the oil at the air outlet, resulting in the oil being easily collected in the air duct.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an air collecting device for a range hood, comprising:

[0006] An air collecting box having an air suction port, an air outlet and an oil drain hole;

[0007] An air outlet joint, which is connected to the air outlet and has an air outlet channel connected to the inside of the air collecting box, a connecting groove is provided on the upper surface of the air outlet joint, the connecting groove is used to connect the air duct, an oil guide groove is provided on the inner wall of the air outlet channel, a side of the oil guide groove close to the oil drain hole has an oil outlet, a portion of the inner wall of the air outlet channel aligned with the oil outlet forms a first oil guide surface, the connecting groove is connected to the oil path of the oil guide groove, and the oil in the connecting groove and the oil guide groove flows out through the oil outlet and flows into the air collecting box along the first oil guide surface;

[0008] An oil cup is connected below the air collecting box and is aligned with the oil drain hole.

[0009] According to one embodiment of the utility model, the oil groove bottom surface and the oil groove inner ring wall of the oil guide groove extend into the air outlet channel, and the air outlet channel is divided into a lower air outlet channel located below the oil guide groove and an upper air outlet channel located above the oil guide groove.

[0010] According to one embodiment of the utility model, the inner wall surface of the bottom surface of the oil groove is an arc surface protruding into the air outlet channel, the lower end of the arc surface is connected with and tangent to the upper edge of the inner wall surface of the lower air outlet channel, and the upper end of the arc surface is connected with and tangent to the lower end of the inner ring wall of the oil groove.

[0011] According to an embodiment of the present utility model, the inner wall surface of the lower air outlet channel is an arc surface that is concave toward the outside, and the lower air outlet channel is formed into a constricted shape with an inner diameter that gradually decreases from bottom to top.

[0012] According to an embodiment of the utility model, the bottom surface of the oil guide groove extends downward along the air outlet channel at the oil outlet to form an extension portion, and the inner annular wall of the oil groove extends along the outer edge of the extension portion at the oil outlet.

[0013] According to one embodiment of the utility model, the lower edge of the air outlet channel and the portion aligned with the air suction port have an oil guide section, the oil guide section extends from one side of the air suction port to the other side of the air suction port, the bottom surface of the oil guide section forms a second oil guide surface, and the second oil guide surface is inclined from top to bottom from one side of the air suction port to the other side of the air suction port.

[0014] According to an embodiment of the utility model, the oil drain hole is located at the rear side of the air outlet, and the first oil guiding surface and the second oil guiding surface guide the oil to the rear side of the air intake port.

[0015] According to one embodiment of the utility model, the air collecting box includes a shell and an inner wind box, the inner wind box is arranged in the shell, and the air suction port, air outlet and oil drain hole are connected to the inner wind box.

[0016] According to one embodiment of the utility model, the portion of the top plate of the inner bellows located on both sides of the air outlet is inclined from an end close to the air suction port to an end away from the air suction port, the downward projection of the inclined portion of the top plate of the inner bellows covers the air suction port, and the inner wall surface of the inclined portion of the top plate of the inner bellows forms a third oil guide surface.

[0017] The utility model also discloses a range hood, which adopts the wind collecting device described in any one of the above items, and also includes an air duct and an exhaust device, one end of the air duct is connected to the connecting groove, and the other end of the air duct is connected to the exhaust device.

[0018] Compared with the prior art, the wind collecting device and the range hood having the same of the utility model have at least the following advantages:

[0019] The utility model discloses an air collecting device, through the arrangement of an air collecting box, an air outlet joint and an oil cup, when the user uses the air collecting device, oil smoke is sucked into the air collecting box from the air intake port, the oil smoke in the air collecting box is discharged to the air outlet channel of the air outlet joint through the air outlet, the oil smoke in the air outlet channel enters the air duct and is then discharged outside, the oil liquid formed after the oil smoke discharged outside is condensed flows back into the air duct, the connecting groove and the oil guide groove receive the oil liquid in the air duct, the oil liquid flows out through the oil outlet and then flows into the air collecting box along the first oil guide surface, the oil liquid in the air collecting box flows into the oil cup through the oil discharge hole for collection, thereby achieving the guidance of the oil liquid flowing to the air outlet joint, avoiding the oil collection in the air duct.

[0020] The utility model provides a range hood, through the arrangement of an air duct, an exhaust device and an air collecting device, after the exhaust device is started, air flows in the range hood, and oil smoke is sucked into the air collecting box from the air inlet, and the oil smoke in the air collecting box is discharged to the air outlet channel of the air outlet joint through the air outlet, and the oil smoke in the air outlet channel enters the air duct and then enters the exhaust device, and the oil smoke is then discharged to the outside through the exhaust duct. At the same time, the oil liquid formed after the oil smoke discharged to the outside is condensed and flows out of the exhaust device and then flows back into the air duct, and the oil liquid in the air duct is received by the connecting groove and the oil guide groove, and the oil liquid in the connecting groove and the oil guide groove flows out through the oil outlet, and then flows into the air collecting box along the first oil guide surface and then flows into the oil cup through the oil discharge hole, and the oil cup collects the oil liquid, thereby realizing the guidance of the oil liquid in the range hood, making it easier for the oil smoke to enter the air duct, and realizing the improvement of the service life of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of a wind collecting device.

[0023] Figure 2 The utility model is a structural explosion diagram of an air collecting device.

[0024] Figure 3 It is a right side sectional view of an air collecting device of the utility model.

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 It is a front cross-sectional view of an air collecting device of the utility model.

[0027] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0028] Figure 7 The utility model is a schematic diagram of the overall structure of an air outlet joint in an air collecting device.

[0029] Figure 8 The utility model is a schematic diagram of the cross-sectional structure of an air outlet joint in an air collecting device.

[0030] Fig. 9 The utility model is a schematic diagram of the overall structure of a range hood.

[0031] Fig.10 This is another overall structural schematic diagram of a range hood of the utility model.

[0032] Reference numerals:

[0033] Air collecting box 1, air suction port 11, air outlet 12, oil drain hole 13, shell 14, inner bellows 15, third oil guide surface 151, air outlet joint 2, air outlet channel 21, first oil guide surface 211, oil guide section 212, second oil guide surface 2121, connecting groove 22, oil guide groove 23, oil outlet 231, oil groove bottom surface 232, oil groove inner ring wall 233, oil cup 3, air duct 4, exhaust device 5. DETAILED DESCRIPTION

[0034] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0038] Please also read Figures 1 to 8 The utility model provides an air collecting device for a range hood, comprising an air collecting box 1, an air outlet joint 2 and an oil cup 3.

[0039] The air collecting box 1 has an air inlet 11, an air outlet 12 and an oil discharge hole 13. When the user uses the air collecting box 1 to extract cooking fumes, the cooking fumes are sucked into the air collecting box 1 from the air inlet 11, and the cooking fumes in the air collecting box 1 are discharged to the air outlet joint 2 through the air outlet 12; at the same time, the oil liquid formed by the condensation of the cooking fumes discharged outward flows back to the oil discharge hole 13 and flows to the oil cup 3 for storage.

[0040] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8The air outlet joint 2 is connected to the air outlet 12, and the air outlet joint 2 has an air outlet channel 21 connected to the inside of the air collecting box 1. A connecting groove 22 is provided on the upper surface of the air outlet joint 2, and the connecting groove 22 is used to connect the air duct 4. The inner wall of the air outlet channel 21 is provided with an oil guide groove 23, and the oil guide groove 23 has an oil outlet 231 on the side close to the oil drain hole 13. The inner wall of the air outlet channel 21 and the part aligned with the oil outlet 231 form a first oil guide surface 211, and the connecting groove 22 is connected with the oil guide groove 23 oil circuit. The oil in the connecting groove 22 and the oil guide groove 23 flows out through the oil outlet 231 and flows into the air collecting box 1 along the first oil guide surface 211. By setting the connecting groove 22 and the oil guiding groove 23, the air duct 4 is connected and fixed through the connecting groove 22; at the same time, the connecting groove 22 can catch the oil flowing down from the inner wall of the air duct 4; and, when the oil smoke is large and the oil is excessive, the oil guiding groove 23 can catch the oil flowing down from the inner wall of the air duct 4, and the oil in the connecting groove 22 and the oil guiding groove 23 flows out through the oil outlet 231 and flows into the air collecting box 1 along the first oil guiding surface 211, thereby guiding the oil flowing to the air outlet joint 2, thereby preventing the oil from flowing out from the air intake port 11 and dripping on the stove to affect the user's use.

[0041] The oil cup 3 is connected to the lower part of the air collecting box 1, and the oil cup 3 is aligned with the oil drain hole 13. Specifically, the oil in the connecting groove 22 and the oil guide groove 23 flows out through the oil outlet 231 and flows into the oil drain hole 13 of the air collecting box 1 along the first oil guide surface 211, so that the oil cup 3 receives the oil flowing out of the oil drain hole 13 to collect the oil.

[0042] The utility model provides an air collecting device. When the user uses the air collecting device, the oil smoke is sucked into the air collecting box 1 from the air inlet 11, and the oil smoke in the air collecting box 1 is discharged to the air outlet channel 21 of the air outlet joint 2 through the air outlet 12, thereby realizing that the oil smoke entering the air outlet channel 21 is discharged to the air duct 4 and then discharged to the outside. At the same time, the oil liquid formed after the oil smoke discharged to the outside is condensed and flows back to the air outlet joint 2 through the air duct 4, and the connecting groove 22 and the oil guide groove 23 respectively receive the oil liquid flowing down from the inner wall of the air duct 4, and the oil liquid in the connecting groove 22 and the oil guide groove 23 flows out through the oil outlet 231 respectively, and the oil liquid then flows into the air collecting box 1 along the first oil guide surface 211, and the oil liquid in the air collecting box 1 flows into the oil cup 3 through the oil discharge hole 13 for collection, thereby realizing the guidance of the oil liquid flowing down from the inner wall of the air duct 4, not only preventing the oil liquid from flowing out from the air inlet 11, but also preventing the oil from being collected in the air duct 4.

[0043] Based on the above examples, please refer to Figure 7 and Figure 8In other embodiments, the oil groove bottom surface 232 and the oil groove inner ring wall 233 of the oil guide groove 23 extend into the air outlet channel 21, and the air outlet channel 21 is divided into a lower air outlet channel 21 located below the oil guide groove 23 and an upper air outlet channel 21 located above the oil guide groove 23. Specifically, by extending the oil groove bottom surface 232 and the oil groove inner ring wall 233 of the oil guide groove 23 into the air outlet channel 21, when the user uses the air collection device, the diameter of the air outlet channel 21 located at the oil guide groove 23 is smaller than the diameter of the lower air outlet channel 21, so that the flow rate of the oil smoke is increased, the suction force at the air suction port 11 is increased, and the air collection device can better absorb the oil smoke in the kitchen to prevent the oil smoke from escaping.

[0044] Based on the above examples, please refer to Figure 7 and Figure 8 In other embodiments, the inner wall surface of the oil groove bottom surface 232 is an arc surface protruding into the air outlet channel 21, the lower end of the arc surface is connected and tangent to the upper edge of the inner wall surface of the lower air outlet channel 21, and the upper end of the arc surface is connected and tangent to the lower end of the oil groove inner ring wall 233. The inner wall surface of the oil groove bottom surface 232 is set to be an arc surface protruding into the air outlet channel 21, and the arc surface is inclined. When too much oil flows into the oil guide groove 23, the arc surface can not only accommodate the oil, but also guide the oil to the oil outlet 231 more quickly, so as to avoid the oil from gathering in the oil guide groove 23.

[0045] Based on the above examples, please refer to Figure 8 In other embodiments, the inner wall of the lower air outlet channel 21 is an arc surface that is concave toward the outside, and the lower air outlet channel 21 is formed into a constricted shape with an inner diameter that gradually decreases from bottom to top. By setting the constricted shape with an inner diameter that gradually decreases from bottom to top, not only the flow rate of the oil smoke entering the air collecting device is increased, and the suction force at the air inlet 11 is increased; moreover, the diameter of the lower air outlet channel 21 gradually increases from top to bottom, reducing the influence of the oil smoke flowing upward on the oil flowing downward, so that the oil can flow from the inner wall of the lower air outlet channel 21 to the air collecting box 1 more quickly.

[0046] Based on the above examples, please refer to Figure 7 and Figure 8In other embodiments, the oil groove bottom surface 232 of the oil guide groove 23 extends downward along the air outlet channel 21 at the oil outlet 231 to form an extension portion, and the oil groove inner ring wall 233 extends along the outer edge of the extension portion at the oil outlet 231. When the user uses the air collecting device, the connecting groove 22 and the oil guide groove 23 receive the oil in the air duct 4, and the oil flows to the extension portion of the oil outlet 231. The oil groove inner ring wall 233 guides the oil flowing on the extension portion of the oil outlet 231 at the extension portion located at the oil outlet 231 to prevent the oil from flowing out of the extension portion of the oil outlet 231. The oil flowing from the extension portion of the oil outlet 231 flows out and then flows into the air collecting box 1 along the first oil guide surface 211. The oil in the air collecting box 1 flows into the oil cup 3 through the oil drain hole 13 for collection, thereby achieving that the oil can flow to the first oil guide surface 211 more quickly and accurately.

[0047] Based on the above examples, please refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 In other embodiments, the lower edge of the air outlet channel 21 that is aligned with the air intake port 11 has an oil guide section 212, the oil guide section 212 extends from one side of the air intake port 11 to the other side of the air intake port 11, and the bottom surface of the oil guide section 212 forms a second oil guide surface 2121, and the second oil guide surface 2121 is inclined from top to bottom from one side of the air intake port 11 to the other side of the air intake port 11. Specifically, the oil guide section 212 is connected to the first oil guide surface 211, and the second oil guide surface 2121 is located above the oil drain hole 13, and the second oil guide surface 2121 is inclined from top to bottom and toward the first oil guide surface 211; through the setting of the oil guide section 212 and the second oil guide surface 2121, when the user uses the air collection device, the oil in the air connection pipe 4 flows to the connecting groove 22 and the oil guide groove 23 for collection, and then the oil flows out through the oil outlet 231 and flows along the first oil guide surface 211; at the same time When the oil overflows the oil guide groove 23 or drops on the outer wall of the oil guide groove 23, the oil flows along the outer wall of the oil guide groove 23 to the oil guide section 212. The second oil guide surface 2121 on the oil guide section 212 guides the oil so that the oil flows toward the first oil guide surface 211 to prevent the oil from dripping from the air suction port 11. At the same time, the oil on the first oil guide surface 211 and the second oil guide surface 2121 can be better discharged from the oil drain hole 13.

[0048] Based on the above examples, please refer to Figure 2 , Figure 3 Figure 4In other embodiments, the oil drain hole 13 is located at the rear side of the air outlet 12, and the first oil guide surface 211 and the second oil guide surface 2121 guide the oil to the rear side of the air intake port 11. The oil drain hole 13 is also located at the rear side of the air intake port 11, and the first oil guide surface 211 and the second oil guide surface 2121 guide the oil to the oil drain hole 13. When the user uses the air collecting device, the connecting groove 22 and the oil guiding groove 23 receive the oil in the air duct 4, and the oil flows out through the oil outlet 231 and then flows into the oil drain hole 13 along the first oil guiding surface 211; at the same time, when the oil overflows the oil guiding groove 23 or the oil drips on the outer wall of the oil guiding groove 23, the oil flows along the outer wall of the oil guiding groove 23 to the oil guiding section 212, and the second oil guiding surface 2121 on the oil guiding section 212 guides the oil so that the oil flows toward the first oil guiding surface 211, thereby guiding the oil flowing on the first oil guiding surface 211 and the oil flowing on the second oil guiding surface 2121 to the oil drain hole 13, thereby preventing the oil on the first oil guiding surface 211 and the oil on the second oil guiding surface 2121 from dripping out from the air intake port 11.

[0049] Based on the above examples, please refer to Figures 2 to 6 In other embodiments, the air collecting box 1 includes a shell 14 and an inner bellows 15, the inner bellows 15 is arranged in the shell 14, and the air inlet 11, the air outlet 12 and the oil drain hole 13 are respectively connected to the inner bellows 15. Through the arrangement of the shell 14 and the inner bellows 15, the user installs the shell 14 on the wall above the gas stove or other places during installation, thereby fixing the air collecting device. When the user uses the air collecting device, the oil smoke is sucked into the inner bellows 15 from the air intake port 11, and the oil smoke in the inner bellows 15 is discharged to the air outlet channel 21 of the air outlet joint 2 through the air outlet port 12. The oil smoke in the air outlet channel 21 enters the air duct 4 and is then discharged outwardly. The oil liquid formed after the oil smoke discharged outwardly is condensed flows back into the air duct 4, and the connecting groove 22 and the oil guide groove 23 receive the oil liquid in the air duct 4. After the oil liquid flows out through the oil outlet 231, it flows into the inner bellows 15 along the first oil guide surface 211, and the oil liquid in the inner bellows 15 flows into the oil cup 3 through the oil discharge hole 13 for collection, thereby guiding the oil liquid through the connecting groove 22, the oil guide groove 23 and the first oil guide surface 211 to prevent the oil liquid from dripping on other places of the air collecting box 1.

[0050] Based on the above examples, please refer to Figure 2 , Figure 5 and Figure 6In other embodiments, the portion of the top plate of the inner bellows 15 located on both sides of the air outlet 12 is tilted from one end close to the air inlet 11 to one end away from the air inlet 11, and the downward projection of the portion of the top plate of the inner bellows 15 tilted covers the air inlet 11, and the inner wall surface of the portion of the top plate of the inner bellows 15 tilted forms a third oil guide surface 151. Specifically, the lower end of the third oil guide surface 151 is located above the oil drain hole 13, and the oil on the third oil guide surface 151 can flow into the oil cup 3. By tilting the top plate of the inner bellows 15, when the user uses the air collecting device, the top plate of the inner bellows 15 will gather the oil smoke entering the air intake port 11, so that the oil smoke can enter the air outlet channel 21 of the air outlet joint 2 more quickly; at the same time, when the oil smoke is too large, the oil smoke will blow the oil to the third oil guide surface 151, and the oil will flow on the third oil guide surface 151 and then flow into the oil cup 3, and then the third oil guide surface 151 can be used to guide the oil to avoid the oil gathering in the inner bellows 15.

[0051] Based on the wind collecting device in any of the above embodiments, please refer to Figures 1 to 10 The utility model also discloses a range hood, comprising an air duct 4, an air exhaust device 5 and the air collecting device in any of the above embodiments. Fig. 9 and Fig.10 One end of the air duct 4 is connected to the connection groove 22, and the other end of the air duct 4 is connected to the exhaust device 5. When the user uses the range hood and starts the exhaust device 5, air flows in the range hood, so that negative pressure is generated at the air inlet 11, and the oil smoke is sucked into the air collecting box 1 from the air inlet 11. The oil smoke in the air collecting box 1 is discharged to the air outlet channel 21 of the air outlet joint 2 through the air outlet 12. The oil smoke in the air outlet channel 21 enters the air duct 4 and then enters the exhaust device 5, and the oil smoke is discharged to the outside through the exhaust pipe 4. At the same time, the oil liquid formed after the condensation of the oil smoke discharged to the outside flows out of the exhaust device 5 and then flows back to the air duct 4. The oil liquid in the air duct 4 is received by the connecting groove 22 and the oil guide groove 23. The oil liquid in the connecting groove 22 and the oil guide groove 23 flows out through the oil outlet 231, and then flows into the air collecting box 1 along the first oil guide surface 211, and then flows into the oil cup 3 through the oil discharge hole 13. The oil cup 3 collects the oil liquid, thereby guiding the oil liquid in the range hood to avoid oil collection in the air duct 4. The oil smoke enters the air duct 4 more smoothly, thereby improving the service life of the range hood.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A wind collecting device for a range hood, characterized in that: include: An air collecting box (1) having an air inlet (11), an air outlet (12) and an oil drain hole (13); An air outlet joint (2) is connected to the air outlet (12) and has an air outlet channel (21) connected to the inside of the air collecting box (1). A connecting groove (22) is provided on the upper surface of the air outlet joint (2). The connecting groove (22) is used to connect to an air duct. An oil guide groove (23) is provided on the inner wall of the air outlet channel (21). The oil guide groove (23) has an oil outlet (231) on a side close to the oil drain hole (13). A first oil guide surface (211) is formed at a portion of the inner wall of the air outlet channel (21) aligned with the oil outlet (231). The connecting groove (22) is connected to the oil guide groove (23) in an oil circuit. The oil in the connecting groove (22) and the oil guide groove (23) flows out through the oil outlet (231) and flows into the air collecting box (1) along the first oil guide surface (211). An oil cup (3) is connected to the lower side of the air collecting box (1) and is aligned with the oil drain hole (13).

2. The wind collecting device according to claim 1, characterized in that: The oil groove bottom surface (232) and the oil groove inner ring wall (233) of the oil guide groove (23) extend into the interior of the air outlet channel (21), and divide the air outlet channel (21) into a lower air outlet channel located below the oil guide groove (23) and an upper air outlet channel located above the oil guide groove (23).

3. The wind collecting device according to claim 2, characterized in that: The inner wall surface of the oil groove bottom surface (232) is an arc surface protruding into the air outlet channel (21), the lower end of the arc surface is connected to and tangent to the upper edge of the inner wall surface of the lower air outlet channel, and the upper end of the arc surface is connected to and tangent to the lower end of the oil groove inner ring wall (233).

4. The wind collecting device according to claim 3, characterized in that: The inner wall surface of the lower air outlet channel is an arc surface that is concave outward, and the lower air outlet channel is formed into a constricted shape with an inner diameter that gradually decreases from bottom to top.

5. The wind collecting device according to claim 2, characterized in that: The oil groove bottom surface (232) of the oil guide groove (23) extends downward along the air outlet channel (21) at the oil outlet (231) to form an extension portion, and the oil groove inner ring wall (233) extends along the outer edge of the extension portion at the oil outlet (231).

6. The wind collecting device according to claim 1, characterized in that: The lower edge of the air outlet channel (21) and the portion aligned with the air suction port (11) comprise an oil guide section (212), the oil guide section (212) extending from one side of the air suction port (11) to the other side of the air suction port (11), the bottom surface of the oil guide section (212) forming a second oil guide surface (2121), the second oil guide surface (2121) being arranged to be inclined from top to bottom from one side of the air suction port (11) to the other side of the air suction port (11).

7. The wind collecting device according to claim 6, characterized in that: The oil drain hole (13) is located at the rear side of the air outlet (12), and the first oil guide surface (211) and the second oil guide surface (2121) guide the oil to the rear side of the air intake port (11).

8. The wind collecting device according to claim 1, characterized in that: The air collecting box (1) comprises a shell (14) and an inner wind box (15); the inner wind box (15) is arranged in the shell (14); the air inlet (11), the air outlet (12) and the oil drain hole (13) are connected to the inner wind box (15).

9. The wind collecting device according to claim 8, characterized in that: The portion of the top plate of the inner bellows (15) located on both sides of the air outlet (12) is inclined from an end close to the air inlet (11) to an end away from the air inlet (11), and the downward projection of the portion of the top plate of the inner bellows (15) that is inclined covers the air inlet (11), and the inner wall surface of the portion of the top plate of the inner bellows (15) that is inclined forms a third oil guide surface (151).

10. A range hood, using the wind collecting device according to any one of claims 1 to 9, characterized in that: It also includes an air duct (4) and an air exhaust device (5), one end of the air duct (4) is connected to the connecting groove (22), and the other end of the air duct (4) is connected to the air exhaust device (5).

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