Range hood

Abstract

The utility model provides a range hood which comprises a range hood back plate, a volute and an air outlet seat, the range hood back plate and the volute enclose to form an accommodating cavity with an air outlet, and the air outlet seat is connected to the air outlet; wherein the air outlet is provided with a first edge, and the first edge is flush with the range hood back plate; the air outlet seat is provided with a fixed port and an air outlet port far away from the fixed port, the fixed port and the air outlet port are communicated to form an air outlet channel, and the center line of the air outlet channel gradually inclines in the direction far away from the range hood back plate from the fixed port to the air outlet port. According to the range hood disclosed by the utility model, on one hand, the range hood back plate replaces a volute bottom plate in a conventional volute, and the volute is directly connected to the range hood back plate to form the accommodating cavity, so that the thickness of the range hood in the front-back direction is smaller, more space is saved for a user, and the overall cost of the range hood is reduced; and on the other hand, although no space exists between the air outlet and the range hood back plate, interference between the air outlet base and the installation wall can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in people's daily lives. Range hoods can quickly remove the fumes generated during the user's cooking process, reduce pollution, purify the air, and greatly improve people's quality of life.

[0003] A volute is usually arranged in the case of a range hood, and an opening is usually arranged at the top of the volute, which is used to connect to the air outlet seat, so that the opening forms the air outlet of the range hood. However, in existing range hoods, the volute mostly has a volute bottom plate, which is mounted to the back plate of the case through a bracket to set the volute in the case, and in order to avoid interference between the air outlet seat and the installation wall, there is usually a gap between the edge of the opening at the top of the volute and the edge of the top plate of the range hood, that is, there is a gap between the opening at the top of the volute and the back plate of the range hood in the front-to-back direction, which causes the existing range hood to be too thick in the front-to-back direction. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the utility model, a range hood is provided, and the technical solution is as follows.

[0005] The range hood includes a range hood back plate, a volute and an air outlet seat, the range hood back plate and the volute enclose a containing cavity with an air outlet, and the air outlet seat is connected to the air outlet; wherein the air outlet has a first side, and the first side is flush with the range hood back plate; the air outlet seat has a fixed port and an air outlet port arranged away from the fixed port, the fixed port is connected with the air outlet port to form an air outlet channel, and the center line of the air outlet channel gradually tilts away from the range hood back plate from the fixed port to the air outlet port.

[0006] In the range hood of the utility model, the volute and the hood back plate are combined to form a accommodating cavity with an air outlet, the first side of the air outlet is flush with the hood back plate, the air outlet seat is connected to the air outlet, and the center line of the air outlet channel gradually tilts from the fixed port to the air outlet port in a direction away from the hood back plate; on the one hand, the hood back plate replaces the volute bottom plate in the conventional volute, and the volute is directly connected to the hood back plate to form a accommodating cavity, so that the thickness of the range hood in the front-to-back direction is smaller, which saves more space for users and reduces the overall cost of the range hood; on the other hand, since the center line of the air outlet channel gradually tilts from the fixed port to the air outlet port in a direction away from the hood back plate, although there is no spacing between the air outlet and the hood back plate, interference between the air outlet seat and the installation wall can be avoided.

[0007] For example, the center line of the air outlet channel and the plane where the range hood back plate is located have an angle α, and the angle α is 10° to 25°. When the angle α is within this range, the air outlet seat is prevented from interfering with the installation wall, and there is no spacing between the air outlet and the range hood back plate, making the thickness of the range hood in the front-to-back direction smaller.

[0008] For example, the top of the range hood back plate is connected to the range hood top plate, the range hood top plate has a connection edge connected to the range hood back plate, and the range hood top plate is provided with a notch corresponding to the air outlet, and the notch extends from the connection edge toward a direction away from the range hood back plate. In this way, there is no gap between the notch and the range hood back plate, so that the thickness of the range hood in the front-to-back direction is smaller, and the notch corresponds to the air outlet to facilitate the connection between the air outlet and the air outlet channel of the air outlet seat.

[0009] Exemplarily, the hood top plate is sunken around the notch toward the accommodating cavity to form a sinking portion, and an oil baffle is arranged in the sinking portion. The sinking portion is provided to facilitate the connection between the hood top plate, the oil baffle and the air outlet, and the oil baffle is arranged in the sinking portion to prevent oil leakage.

[0010] Exemplarily, the air outlet seat is provided with a docking portion around the fixed port; the oil baffle has an oil baffle portion and a connecting portion with an opening in the middle, the opening corresponds to the notch, the connecting portion is located between the bottom wall of the sinking portion and the docking portion, the oil baffle portion extends from the outer edge of the connecting portion toward the air outlet port, and part of the oil baffle portion abuts against the side wall of the sinking portion, and part of the oil baffle portion abuts against the back plate of the range hood. A docking portion is formed around the fixed port of the air outlet seat, and the connecting portion can be located between the bottom wall of the sinking portion and the docking portion, so as to facilitate the connection between the air outlet seat, the oil baffle and the top plate of the range hood. By abutting part of the oil baffle against the side wall of the sinking portion, and part of the oil baffle against the back plate of the range hood, the oil baffle is prevented from being displaced, and the oil baffle effect is enhanced. The opening corresponds to the notch, so that oil can flow into the accommodating cavity through the opening and the notch, so as to avoid excessive accumulation of oil and overflow of the oil baffle.

[0011] For example, a sealing member having a through hole in the middle is provided between the connecting portion and the docking portion, and the through hole corresponds to the opening. The sealing member is provided to enhance the sealing between the oil retaining member and the docking portion, and prevent oil from flowing from between the connecting portion and the docking portion to the outside, thereby enhancing the oil leakage prevention effect, and the through hole corresponds to the opening to facilitate the oil to flow into the accommodating cavity.

[0012] Exemplarily, the end surface of the sealing member close to the butt joint is concave with a groove toward the connecting portion, and the side wall of the groove abuts against the oil retaining portion. The provision of the groove further enhances the sealing and oil leakage prevention effects, and prevents oil spillage.

[0013] Exemplarily, the fixed port is constructed as a rectangle with a length of L1 and a width of L2, and the air outlet port is constructed as a circle with a diameter of D, wherein L2≤D, L1≥D. The fixed port is constructed as a rectangle to facilitate docking with the air outlet, and the air outlet end is constructed as a circle to facilitate connection with the smoke exhaust pipe. The width L2 of the fixed port is less than or equal to the diameter D of the air outlet port, and the length L1 of the fixed port is greater than or equal to the diameter D of the air outlet port. Then, the width L2 of the fixed port is less than or equal to the length L1 of the fixed port, thereby making the thickness of the range hood in the front-to-back direction smaller.

[0014] Exemplarily, the air outlet further has a second side, a third side and a fourth side, the second side is opposite to the first side, the third side is opposite to the fourth side, and the third side and the fourth side are connected between the second side and the first side; the volute includes a surrounding body and a cover body, the second side is formed on the cover body, and the third side and the fourth side are respectively formed at two ends of the surrounding body along a predetermined extension direction. In this way, the four sides of the air outlet are formed by the volute and the range hood back plate, so that there is no spacing between the air outlet and the range hood back plate, so that the thickness of the range hood in the front-to-back direction is smaller.

[0015] Exemplarily, the enclosure has a first connecting edge and a second connecting edge that are arranged opposite to each other, and both of the first connecting edge and the second connecting edge extend in a predetermined extension direction, the first connecting edge is connected to the back plate of the range hood, and the second connecting edge is connected to the cover. The first connecting edge can be considered as a connecting line connecting the volute to the back plate of the range hood, and the first connecting edge surrounds the contour of the volute, so that the connection of the volute to the back plate of the range hood is more stable, so that the range hood as a whole can be more stable, and the volute is not easy to fall off. The second connecting edge is connected to the cover, which is equivalent to the enclosure being arranged along the edge of the cover, such that the enclosure and the cover can be an integral part, such a volute structure can be simpler, and the overall cost can be lower.

[0016] For example, a portion of the range hood back plate is recessed in a direction away from the cover body to form a recessed portion, and the first connecting edge is connected to the recessed portion and is located in the recessed portion. Since the first connecting edge is connected to the recessed portion and can be located in the recessed portion, the provision of the recessed portion can facilitate the positioning of the volute, so that the connection of the volute to the range hood back plate can be simpler and more convenient, and the overall installation process of the range hood is also simpler.

[0017] For example, the recessed portion has a positioning side wall extending along a predetermined extension direction, the first connecting side abuts against the positioning side wall, and part of the oil retaining portion abuts against the positioning side wall. This arrangement can make it easier and more convenient to connect the volute to the back plate of the range hood, and the overall installation process of the range hood can also be simpler, and part of the oil retaining portion abuts against the positioning side wall, and the oil retaining portion is limited by the positioning side wall to prevent the oil retaining member from being offset.

[0018] Exemplarily, the recessed portion has a mounting surface facing the cover body portion, and the first connecting edge is provided with a flange parallel to the mounting surface and extending toward the outside of the accommodating cavity, the flange is located in the recessed portion and connected to the mounting surface, and part of the oil baffle portion abuts against the mounting surface. The provision of the flange can increase the connection area between the surrounding body portion of the volute and the back plate of the range hood, thereby making the connection of the volute to the back plate of the range hood more stable, and the range hood as a whole can also be more stable. Moreover, the provision of the flange can make it easier to connect the surrounding body portion of the volute to the back plate of the range hood. Part of the oil baffle portion abuts against the mounting surface, and the oil baffle portion is limited by the mounting surface, which increases the stability of the oil baffle and prevents the oil baffle from being displaced.

[0019] Exemplarily, the recessed portion has a positioning side wall extending along a predetermined extension direction, the flange at least partially abuts against the positioning side wall, and part of the oil baffle abuts against the positioning side wall. Such a recessed portion can make it easier and more convenient to connect the volute to the back plate of the range hood, and the overall installation process of the range hood can also be simpler. When the oil baffle abuts against the mounting surface, the positioning side wall and the sinking portion, the entire oil baffle is limited, thereby enhancing the stability of the entire oil baffle and preventing the oil baffle from being displaced.

[0020] For example, a plurality of threaded holes are provided on the flange, a plurality of threaded matching holes are provided on the mounting surface, and the plurality of threaded holes and the plurality of threaded matching holes are connected one-to-one. The flange can be connected to the mounting surface by threaded connection, so that it is easier to connect the volute to the back plate of the range hood. By connecting the plurality of threaded holes and the plurality of threaded matching holes one-to-one, the volute can be connected to the back plate of the range hood more stably.

[0021] Exemplarily, the docking portion is connected to the air outlet through a connector, the connector has a first connector, a second connector and a third connector, the second connector and the third connector are respectively connected to two ends of the first connector, the first connector is connected to the second side, the second connector is connected to the third side, and the third connector is connected to the fourth side. The arrangement of the connector can make the air outlet connected to the air outlet seat more stable and easier to install.

[0022] For example, the range hood back plate extends toward the cover body at one end away from the air outlet to form a range hood lower plate. Such a range hood lower plate can be an integral part with the range hood back plate, for example, the range hood back plate and the range hood lower plate can be formed by an integral stretching process, so that the connection between the range hood back plate and the range hood lower plate is simpler and the overall cost can also be lower.

[0023] For example, the surrounding body is provided with an oil leakage hole, and the oil droplets in the accommodating cavity flow out of the accommodating cavity through the oil leakage hole. The oil droplets in the volute will flow to the oil leakage hole under the action of gravity, and these oil droplets can flow out of the volute through the oil leakage hole, thereby avoiding excessive oil accumulation in the volute.

[0024] Exemplarily, the range hood further includes a motor, a portion of the range hood back plate is recessed toward the cover body to form a mounting portion having a mounting cavity, a mounting through hole is provided on the mounting portion, and the motor is inserted through the mounting through hole; wherein the motor is divided into a first part and a second part by the mounting through hole, the first part is located in the mounting cavity, and the second part is located in the accommodating cavity and protrudes relative to the mounting portion toward the cover body. In this way, a mounting portion is formed on the range hood back plate, and the motor is directly inserted through the mounting through hole on the mounting portion, which is equivalent to directly connecting the motor to the range hood back plate without providing a motor bracket in a conventional range hood. The mounting portion is formed by a portion of the range hood back plate being recessed toward the cover body, and the first portion of the motor located outside the range hood is located in the mounting cavity formed by the mounting portion, that is, the motor is not arranged beyond the portion of the range hood back plate, and the motor in such a range hood occupies less space in the front-to-back direction, so that the overall thickness of the range hood can be smaller.

[0025] For example, the mounting portion has a positioning wall parallel to the back plate of the range hood, and the mounting through hole is arranged through the positioning wall. The positioning wall is parallel to the back plate of the range hood, and the mounting through hole is arranged through the positioning wall, so that the central axis of the motor passing through the mounting through hole can be perpendicular to the back plate of the range hood, so that the shaking caused by the rotating shaft of the motor when rotating is smaller, and the internal structure of the range hood can be more regular, and the overall structure can be more stable.

[0026] For example, the positioning wall has a mounting plane away from the back plate of the range hood, and the second part is connected to the mounting plane. On the basis that the motor is inserted into the mounting through hole, the second part is connected to the mounting plane, so that the motor can be more stably connected to the mounting portion, and thus the range hood as a whole can be more stable. Moreover, no matter how the second part is connected to the mounting plane, since the mounting plane has a certain area, it will be relatively simple and convenient to connect the second part to the mounting plane, so that the installation process of the range hood as a whole can be simpler.

[0027] Exemplarily, a plurality of connection sections are provided on the second part, and the plurality of connection sections are arranged in a ring shape around the central axis of the motor, and a plurality of connection fitting parts are provided on the mounting plane, and the plurality of connection fitting parts are located around the mounting through hole, and the plurality of connection fitting parts are connected to the plurality of connection sections in a one-to-one correspondence. By connecting the plurality of connection fitting parts to the plurality of connection sections in a one-to-one correspondence, the connection of the second part to the mounting surface can be more stable, and the arrangement of the connection sections and the connection fitting parts can make the operation of connecting the second part to the mounting surface simpler. The plurality of connection sections are arranged in a ring shape around the central axis of the motor, which can ensure that the connection of the motor to the mounting part is more stable in all directions, so that the rotation shaft of the motor is not easy to drive other components to vibrate when rotating, and the stability of the overall structure is stronger.

[0028] Exemplarily, the back plate of the range hood has an outer side and an inner side, the outer side is farther away from the cover body than the inner side, a wiring groove is formed by being recessed from the outer side toward the inner side, and the first part is connected with a wire, which is led out through the wiring groove. The wire connected to the first part is led out through the wiring groove, so that there is no need to reserve space outside the outer side of the back plate of the range hood to arrange these wires, and the wire connected to the first part is led out through the wiring groove, which can play a role in organizing the wires, thereby preventing the wires connected to the first part from being too messy.

[0029] Exemplarily, the wiring trough has a first end and a second end that are arranged opposite to each other, the first end is connected to the mounting portion, and the second end is provided with a through hole that passes through the bottom of the wiring trough. By providing such a wiring trough, it is possible to further avoid the wiring of the wires connected to the first part being too messy.

[0030] For example, a portion of the range hood back plate is recessed in a direction away from the cover body to form a recessed portion, and the range hood back plate has a peripheral portion surrounding the recessed portion, a first end is disposed on the recessed portion, and a second end is disposed on the peripheral portion. With such a wiring groove, the internal wiring of the range hood as a whole is more regular, and safety hazards caused by messy wiring can be avoided.

[0031] For example, the wiring trough forms a notch on the side away from the inner side, and a cover plate is connected to the outer side to cover the notch. The cover plate can limit the wires in the wiring trough, and the cover plate can protect the wires in the wiring trough to prevent the wires from being damaged by external factors, so that the overall stability of the range hood can be better.

[0032] Exemplarily, a sealing ring is sleeved on the motor, and the sealing ring is connected to the mounting through hole. By providing the sealing ring, the oil retained inside the range hood can be prevented from flowing to the outside of the range hood housing when the range hood is sucking oil smoke.

[0033] For example, the periphery of the sealing ring is provided with an annular clamping groove, which is clamped to the edge of the mounting through hole. The sealing ring is connected to the mounting through hole by clamping the clamping groove to the edge of the mounting through hole, so that the overall structure is simpler and easier to implement, and the process of setting the clamping groove on the sealing ring is simpler, and the overall structure is easier to produce and process.

[0034] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0035] The advantages and features of the present invention are described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention. In the drawings,

[0037] Figure 1 A three-dimensional diagram of a range hood according to an exemplary embodiment of the present invention;

[0038] Figure 2 for Figure 1 A partial exploded view of the range hood shown;

[0039] Figure 3 for Figure 1 A bottom view of the air outlet seat shown;

[0040] Figure 4 for Figure 1 A left side view of the air outlet seat shown;

[0041] Figure 5 for Figure 1 A three-dimensional diagram of a partial structure of a range hood shown;

[0042] Figure 6 for Figure 5 The three-dimensional diagram of the partial structure of the range hood shown is observed from another viewing angle;

[0043] Figure 7 for Figure 5 A front view of a partial structure of the range hood shown;

[0044] Figure 8 for Figure 5 An exploded view of a partial structure of a range hood shown;

[0045] Fig. 9 A three-dimensional diagram of a volute of an exemplary embodiment of the present invention;

[0046] Fig.10 for Figure 1 A three-dimensional diagram of a partial structure of a range hood shown;

[0047] Fig.11 for Fig.10 A front view of a partial structure of a range hood shown;

[0048] Fig.12 for Fig.10 A side view of a partial structure of a range hood shown;

[0049] Fig.13 for Fig.10 A rear view of a partial structure of the range hood shown; and

[0050] Fig.14 for Fig.10 An exploded view of the partial structure of the range hood is shown.

[0051] The above drawings include the following reference numerals:

[0052] 10. Range hood; 100. Range hood back plate; 101. Outer side; 102. Inner side; 110. Top; 111. Matching wall; 120. Recessed portion; 121. Positioning side wall; 122. Mounting surface; 130. Mounting portion; 131. Mounting cavity; 132. Mounting through hole; 133. Positioning wall; 134. Mounting plane; 1341. Connecting and matching portion; 140. Wiring groove; 141. First end; 142. Second end; 1421. Through hole; 150. Outer portion; 200. Volute; 210. Enclosure; 211. Third side; 212. Fourth side; 213. First connecting side; 2131. Flanged edge; 214. Second connecting side; 220. Cover; 221. Second side; 300. Air outlet seat; 310. Fixed port; 311. Docking portion; 32 0, air outlet port; 330, air outlet channel; 340, air outlet ring wall; 341, first outer wall; 342, second outer wall; 401, air outlet; 402, accommodating chamber; 500, range hood top plate; 510, connecting edge; 511, extending wall; 512, connecting wall; 520, notch; 521, sinking part; 5211, bottom wall; 5212, side wall; 610, oil retaining member; 611, oil retaining part; 612, connecting part; 6121, opening; 620, sealing member; 621, through hole; 700, connecting member; 710, first connecting part; 720, second connecting part; 730, third connecting part; 800, range hood lower plate; 900, motor; 910, first part; 920, second part; 921, connecting section; 930, sealing ring; 931, slot. DETAILED DESCRIPTION

[0053] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only illustrates preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail.

[0054] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0055] The embodiment of the utility model provides a range hood. The range hood provided by the utility model can be mainly used in the kitchen, but other scenarios where the range hood can be used are not excluded. The following will introduce a range hood according to the embodiment of the utility model in detail with reference to the accompanying drawings.

[0056] When the range hood is used in the kitchen or other scenarios, it is necessary to install the range hood on the mounting wall. Of course, it is not ruled out that the range hood can be installed on a mounting location such as a cabinet. Since the range hood is usually installed on the mounting wall, the following mainly describes the situation where the range hood is installed on the mounting wall.

[0057] Combined with reference Figures 1 to 10 The range hood 10 may include a range hood back plate 100, a volute 200 and an air outlet seat 300. The range hood 10 may include a chassis, and the range hood back plate 100 is a part of the chassis. The range hood back plate 100 may be used to connect to a mounting wall to install the range hood 10. The range hood back plate 100 and the volute 200 may enclose a receiving chamber 402 having an air outlet 401, and the volute 200 may be an open structure, and the volute 200 may not have a volute 200 bottom plate in a conventional volute 200, that is, the volute 200 may be directly connected to the range hood back plate 100, and the range hood back plate 100 replaces the volute 200 bottom plate in a conventional volute 200. A motor 900 and an impeller may be provided in the receiving chamber 402, and the impeller is driven to rotate by the motor 900 to extract oil smoke. The air outlet seat 300 may be connected to the air outlet 401. The air outlet 401 may have a first side, and the first side may be flush with the range hood back plate 100, that is, the first side of the air outlet 401 may be on the range hood back plate 100, and there is no spacing between the air outlet 401 and the range hood back plate 100. The air outlet seat 300 may have a fixed port 310 and an air outlet port 320 disposed away from the fixed port 310. The fixed port 310 and the air outlet 401 may be connected, and the air outlet port 320 may be used to connect a smoke exhaust pipeline. The fixed port 310 and the air outlet port 320 are connected to form an air outlet channel 330. The air outlet channel 330 may have a center line P-P' formed by a line connecting the center point of the fixed port 310 to the center point of the air outlet port 320, and the center line P-P' of the air outlet channel 330 may gradually tilt away from the range hood back plate 100 from the fixed port 310 to the air outlet port 320.

[0058] In the range hood 10 of the present invention, the volute 200 and the range hood back plate 100 are enclosed to form a receiving cavity 402 having an air outlet 401, a first side of the air outlet 401 is flush with the range hood back plate 100, an air outlet seat 300 is connected to the air outlet 401, and a center line P-P' of the air outlet channel 330 gradually tilts away from the range hood back plate 100 from the fixed port 310 to the air outlet port 320; on the one hand, the range hood back plate 100 replaces the bottom plate of the volute 200 in the conventional volute 200, The volute 200 is directly connected to the range hood back panel 100 to form a accommodating cavity 402, which makes the thickness of the range hood 10 in the front-to-back direction smaller, saves more space for users, and reduces the overall cost of the range hood 10; on the other hand, since the center line P-P' of the air outlet channel 330 gradually tilts away from the range hood back panel 100 from the fixed port 310 to the air outlet port 320, although there is no spacing between the air outlet 401 and the range hood back panel 100, it can also avoid interference between the air outlet seat 300 and the installation wall.

[0059] like Figure 4 As shown, a vertical line LL' parallel to the plane where the range hood back plate 100 is located can be constructed, and the vertical line LL' can intersect with the center point of the fixed port 310 or the midline point of the air outlet port 320. Figures 1 to 6 , the center line P-P' of the air outlet channel 330 and the plane where the range hood back plate 100 is located may have an angle α (i.e., the angle between the center line P-P' and the vertical line L-L'), and the angle α may be 10° to 25°, for example, the angle α may be 10°, 15°, 20°, 25°, etc. When the angle α is within this range, the air outlet seat 300 is prevented from interfering with the installation wall, and there is no spacing between the air outlet 401 and the range hood back plate 100, so that the thickness of the range hood 10 in the front-to-back direction is smaller. Furthermore, the air outlet seat 300 has an air outlet annular wall 340 connecting the fixed port 310 and the air outlet port 320, and an air outlet channel 330 is formed in the air outlet annular wall 340. The air outlet annular wall 340 has a first outer wall surface 341 close to the range hood back plate 100 and a second outer wall surface 342 away from the range hood back plate 100. The angle between the first outer wall surface 341 and the range hood back plate 100 and the angle between the second outer wall surface 342 and the range hood back plate 100 can be the same or different, such as Figure 4 The angle between the second outer wall surface 342 and the range hood back plate 100 may be greater than the angle between the first outer wall surface 341 and the range hood back plate 100 , thereby better avoiding the air outlet ring wall 340 interfering with the installation wall and ensuring the stability of the air outlet seat 300 .

[0060] Again, refer to Figures 1 to 6, the top 110 of the range hood back plate 100 may be connected to the range hood top plate 500, and the range hood top plate 500 may also be a part of the chassis. The range hood top plate 500 may have a connecting edge 510 connected to the range hood back plate 100. The connecting edge 510 of the range hood top plate 500 may have an extension wall 511 extending into the accommodating cavity 402, and the extension wall 511 may be connected to a connecting wall 512 parallel to the range hood top plate 500, and the range hood top plate 500, the extension wall 511 and the connecting wall 512 may be an integral part. The top 110 of the range hood back plate 100 may have a matching wall 111 extending toward the volute 200, and the matching wall 111 abuts against the extension wall 511 and is connected to the connecting wall 512. The matching wall 111 and the connecting wall 512 may be correspondingly punched with connecting holes, and fasteners such as screws or bolts are passed through the connecting holes to connect the matching wall 111 to the connecting wall 512. Of course, the matching wall 111 and the connecting wall 512 can also be connected by welding, pasting, etc. The range hood top plate 500 can be provided with a notch 520 corresponding to the air outlet 401. The notch 520 can extend from the connecting edge 510 in a direction away from the range hood back plate 100. In this way, there is no gap between the notch 520 and the range hood back plate 100, so that the thickness of the range hood 10 in the front-to-back direction is smaller, and the notch 520 corresponds to the air outlet 401 to facilitate the connection between the air outlet 401 and the air outlet channel 330 of the air outlet seat 300.

[0061] Combined with reference Figure 1 , Figure 2 and Figure 6 The range hood top plate 500 may be recessed around the notch 520 toward the accommodating cavity 402 to form a sinking portion 521. An oil baffle 610 may be disposed in the sinking portion 521. The sinking portion 521 is provided to facilitate the connection between the range hood top plate 500, the oil baffle 610 and the air outlet 401, and the oil baffle 610 is disposed in the sinking portion 521 to prevent oil leakage.

[0062] Combined with reference Figures 1 to 6, the air outlet seat 300 may be formed with a docking portion 311 around the fixed port 310. The docking portion 311 may be a flange plate. The oil baffle 610 may have an oil baffle 611 and a connecting portion 612 having an opening 6121 in the middle. The opening 6121 may correspond to the notch 520. The connecting portion 612 may be located between the bottom wall 5211 of the sinking portion 521 and the docking portion 311. The docking portion 311, the connecting portion 612 and the bottom wall 5211 of the sinking portion 521 may be correspondingly punched and connected by fasteners such as screws or bolts. Of course, the use of connection methods such as welding or bonding is not excluded. The oil baffle 611 may extend from the outer edge of the connecting portion 612 toward the air outlet port 320, and part of the oil baffle 611 may abut against the side wall 5212 of the sinking portion 521, and part of the oil baffle 611 may abut against the back plate 100 of the range hood. The extended length of the oil baffle portion 611 can be flush with the plane of the range hood top plate 500, or the extended length of the oil baffle portion 611 can be flush with the top end 110 of the range hood back plate 100, so as to block the oil from flowing onto the range hood top plate 500, to avoid the oil baffle portion 611 being too short and unable to block the oil, and to avoid the oil baffle portion 611 being too long and interfering with the installation of the air outlet seat 300. A docking portion 311 is formed around the fixed port 310 of the air outlet seat 300, and the connecting portion 612 can be located between the bottom wall 5211 of the sinking portion 521 and the docking portion 311, so as to facilitate the connection between the air outlet seat 300, the oil baffle 610 and the range hood top plate 500. The oil baffle 611 is partially abutted against the side wall 5212 of the sinking portion 521, and the oil baffle 611 is partially abutted against the range hood back plate 100, so as to prevent the oil baffle 610 from being displaced and enhance the oil blocking effect. The opening 6121 corresponds to the notch 520, so that oil can flow into the accommodating chamber 402 through the opening 6121 and the notch 520, so as to avoid excessive accumulation of oil and overflow from the oil baffle 611.

[0063] Combined with reference Figure 2 and Figure 5 A sealing member 620 having a through hole 621 in the middle may be provided between the connecting portion 612 and the docking portion 311. The sealing member 620 may be made of materials such as rubber or silicone. The through hole 621 may correspond to the opening 6121. The sealing member 620 is provided to enhance the sealing performance between the oil retaining member 610 and the docking portion 311, thereby preventing oil from flowing from between the connecting portion 612 and the docking portion 311 to the outside, thereby enhancing the anti-oil leakage effect, and the through hole 621 corresponds to the opening 6121 to facilitate the oil to flow into the accommodating chamber 402.

[0064] In an embodiment not shown in the figure, the end surface of the sealing member 620 close to the docking portion 311 may be concave with a groove toward the connecting portion 612. The groove may be similar in shape to the oil retaining member 610 and may have only one side wall to completely fit the oil retaining member 610, thereby achieving a better sealing effect. The side wall of the groove may abut against the oil retaining portion 611. The provision of the groove further enhances the sealing and oil leakage prevention effects, and prevents oil spillage.

[0065] Again, refer to Figures 1 to 6 , based on the fact that the range hood 10 does not have a bottom plate of the volute 200, the thickness of the range hood 10 in the front-to-back direction is smaller, and the length of the air outlet port 320 of the air outlet seat 300 in the front-to-back direction should be smaller, but in order to ensure the smoke exhaust efficiency, its length in the left-to-right direction should be increased. The air outlet 401 can be rectangular, with a stable structure, reducing the vibration of the air outlet 401 caused by the wind flow, and improving the smoke exhaust efficiency. The fixed port 310 can be constructed as a rectangle with a length of L1 (i.e., the length in the left-to-right direction) and a width of L2 (i.e., the length in the front-to-back direction). The air outlet port 320 can be constructed as a circle with a diameter of D, where L2≤D and L1≥D. The fixed port 310 is constructed into a rectangle to facilitate docking with the air outlet 401, and the end of the air outlet 401 is constructed into a circle to facilitate connection with the smoke exhaust pipe. The width L2 of the fixed port 310 is less than or equal to the diameter D of the air outlet port 320, and the length L1 of the fixed port 310 is greater than or equal to the diameter D of the air outlet port 320. Then, the width L2 of the fixed port 310 is less than or equal to the length L1 of the fixed port 310, thereby making the thickness of the range hood 10 in the front-to-back direction smaller.

[0066] See also Figure 1 , Figure 6 , Figure 8 and Fig. 9, the air outlet 401 may also have a second side 221, a third side 211 and a fourth side 212. The second side 221 may be opposite to the first side, the third side 211 may be opposite to the fourth side 212, and the third side 211 and the fourth side 212 may be connected between the second side 221 and the first side. The volute 200 may include a body portion 210 and a cover portion 220. The body portion 210 and the cover portion 220 may be integrally formed, for example, the body portion 210 and the cover portion 220 may be an integral piece, and may be formed by an integral stretching process. The body portion 210 may extend along a predetermined extension direction, and the predetermined extension direction may extend along a curve. It can be considered that the contour line of the body portion 210 projected on the back plate 100 of the range hood is a curve in the predetermined extension direction. The second side 221 may be formed on the cover 220, for example, the second side 221 may be formed on the top of the cover 220, and the second side 221 may be arranged opposite to the range hood back plate 100. The third side 211 and the fourth side 212 may be formed at both ends of the enclosure 210 along the predetermined extension direction. Since the third side 211 may be opposite to the fourth side 212, and the third side 211 and the fourth side 212 may be connected between the second side 221 and the range hood back plate 100, it can be considered that the enclosure 210 is located between the cover 220 and the range hood back plate 100. The enclosure 210 may be a curved plate-like structure with the third side 211 as a starting point, extending to the fourth side 212 along the predetermined extension direction, and the fourth side 212 as an extension end point. In this way, the four sides of the air outlet 401 are formed by the volute 200 and the range hood back plate 100 , so that there is no gap between the air outlet 401 and the range hood back plate 100 , and thus the thickness of the range hood 10 in the front-to-back direction is smaller.

[0067] The surrounding body 210 may have a first connecting edge 213 and a second connecting edge 214 that are oppositely arranged between the end of the third side 211 and the end of the fourth side 212. The first connecting edge 213 and the second connecting edge 214 may both extend along a predetermined extension direction. The third side 211 and the fourth side 212 may respectively have an end close to the range hood back plate 100, and a line along the predetermined extension direction between an end of the third side 211 close to the range hood back plate 100 and an end of the fourth side 212 close to the range hood back plate 100 may be the first connecting edge 213, and the first connecting edge 213 may be a curve. The third side 211 and the fourth side 212 may respectively have another end away from the range hood back plate 100, and a line along the predetermined extension direction between the other end of the third side 211 away from the range hood back plate 100 and the other end of the fourth side 212 away from the range hood back plate 100 may be the second connecting edge 214, and the second connecting edge 214 may be a curve. Figure 8In the illustrated embodiment, the first connection edge 213 and the second connection edge 214 may be substantially the same as the contour line of the projection of the volute 200 on the range hood back plate 100. The first connection edge 213 may be connected to the range hood back plate 100, and the second connection edge 214 may be connected to the cover body 220. The first connection edge 213 may be connected to the range hood back plate 100 in various forms such as snap connection, welding or threaded connection. It can be considered that the first connection edge 213 is the connection line between the volute 200 and the range hood back plate 100, and the first connection edge 213 surrounds the contour of the volute 200, so that the connection of the volute 200 to the range hood back plate 100 is more stable, so that the range hood 10 as a whole can be more stable, and the volute 200 is not easy to fall off. The second connection edge 214 is connected to the cover body 220, which is equivalent to the surrounding body 210 being arranged along the edge of the cover body 220. Such a surrounding body 210 and the cover body 220 may be an integral part, and such a volute 200 structure may be simpler and the overall cost may be lower.

[0068] In one embodiment of the present invention, see Figure 1 , Figure 6 and Figure 8 A portion of the range hood back plate 100 is recessed in a direction away from the cover body 220 to form a recessed portion 120. The first connecting edge 213 can be connected to the recessed portion 120 and can be located in the recessed portion 120. The edge of the recessed portion 120 can have any suitable form, for example, the recessed portion 120 can be a square-shaped recess as a whole, such as Figure 8 As shown, the edge of the recessed portion 120 may also extend along a predetermined extension direction, and the edge of such a recessed portion 120 may have a substantially similar trend to the first connecting edge 213. When installing the range hood 10, since the first connecting edge 213 is connected to the recessed portion 120 and may be located in the recessed portion 120, the arrangement of the recessed portion 120 may facilitate positioning of the volute 200, so that connecting the volute 200 to the range hood back plate 100 may be simpler and more convenient, and the overall installation process of the range hood 10 may also be simpler.

[0069] For example, see Figure 1 , Figure 6 and Figure 8The recessed portion 120 may have a positioning side wall 121 extending along a predetermined extension direction, the first connecting edge 213 may abut against the positioning side wall 121, and part of the oil retaining portion 611 may abut against the positioning side wall 121. The positioning side wall 121 may be a curve substantially the same as the first connecting edge 213. Since the positioning side wall 121 and the first connecting side 213 both extend in a predetermined extension direction, and the first connecting side 213 abuts against the positioning side wall 121, when connecting the volute 200 to the range hood back panel 100, the first connecting side 213 can be placed into the recessed portion 120 first, and the first connecting side 213 abuts against the positioning side wall 121, so that the installation position of the volute 200 can be quickly positioned. Such a recessed portion 120 can make it simpler and more convenient to connect the volute 200 to the range hood back panel 100, and the overall installation process of the range hood 10 can also be simpler, and part of the oil baffle 611 abuts against the positioning side wall 121, and the oil baffle 611 is limited by the positioning side wall 121 to prevent the oil baffle 610 from being displaced.

[0070] In one embodiment of the present utility model, in combination with Figure 1 , Figure 5 and Figure 8 , the recessed portion 120 may have a mounting surface 122 facing the inside of the range hood 10, the first connecting edge 213 may be provided with a flange 2131 parallel to the mounting surface 122 and extending toward the outside of the accommodating cavity 402, the flange 2131 may be located in the recessed portion 120 and may be connected to the mounting surface 122, and part of the oil retaining portion 611 abuts against the mounting surface 122. The flange 2131 may be attached to the mounting surface 122. The flange 2131 may be connected to the mounting surface 122 in various forms such as threaded connection, riveting or welding. The provision of the flange 2131 may increase the connection area between the surrounding body 210 of the volute 200 and the range hood back plate 100, so that the connection between the volute 200 and the range hood back plate 100 may be more stable, and the range hood 10 as a whole may also be more stable. Moreover, the provision of the flange 2131 may make it easier for the surrounding body 210 of the volute 200 to be connected to the range hood back plate 100. Part of the oil-blocking portion 611 abuts against the mounting surface 122 , and the oil-blocking portion 611 is limited by the mounting surface 122 , thereby increasing the stability of the oil-blocking member 610 and preventing the oil-blocking member 610 from being displaced.

[0071] For example, see Figure 1 , Figure 6 , Figure 7 and Figure 8, the recessed portion 120 may have a positioning side wall 121 extending along a predetermined extension direction, the flange 2131 may abut against the positioning side wall 121, and part of the oil retaining portion 611 abuts against the positioning side wall 121. When connecting the volute 200 to the range hood back plate 100, the first connecting edge 213 may be placed into the recessed portion 120 first, and the flange 2131 may be located in the recessed portion 120, and then the flange 2131 may be abutted against the positioning side wall 121, so that the installation position of the volute 200 can be quickly positioned. Thus, such a recessed portion 120 can make it easier and more convenient to connect the volute 200 to the range hood back plate 100, and the overall installation process of the range hood 10 can also be simpler. When the oil baffle portion 611 abuts against the mounting surface 122 , the positioning side wall 121 and the sinking portion 521 , the entire oil baffle portion 611 is limited, thereby enhancing the stability of the entire oil baffle member 610 and preventing the oil baffle member 610 from being displaced.

[0072] For example, the flange 2131 may be provided with a plurality of threaded holes, the mounting surface 122 may be provided with a plurality of threaded matching holes, and the plurality of threaded holes and the plurality of threaded matching holes may be connected in a one-to-one correspondence. The flange 2131 may be connected to the mounting surface 122 in the form of a threaded connection, so that it is easier to connect the volute 200 to the range hood back plate 100. By connecting the plurality of threaded holes and the plurality of threaded matching holes in a one-to-one correspondence, the volute 200 may be more stable when connected to the range hood back plate 100.

[0073] In one embodiment of the present utility model, in conjunction with reference to Figures 5 to 8 , the docking portion 311 is connected to the air outlet 401 through a connector 700, and the connector 700 may have a first connector 710, a second connector 720, and a third connector 730, and the second connector 720 and the third connector 730 may be connected to both ends of the first connector 710, respectively, the first connector 710 may be connected to the second side 221, the second connector 720 may be connected to the third side 211, and the third connector 730 may be connected to the fourth side 212. The connector 700 as a whole may have a shape substantially the same as that of the air outlet 401 of the accommodating cavity 402. The arrangement of the connector 700 may make the air outlet 401 more stable and easier to install when connected to the air outlet seat 300.

[0074] Since the range hood 10 provided by the utility model can have a smaller thickness in the front-to-back direction as a whole, the length of the range hood lower plate 800 in the front-to-back direction can also be smaller, and such a range hood lower plate 800 can have a smaller size, so that the range hood lower plate 800 can be formed integrally with the range hood back plate 100. For example, in one embodiment of the utility model, the bottom of the range hood back plate 100 extends toward the end away from the air outlet 401 toward the cover body 220 to form the range hood lower plate 800. Such a range hood lower plate 800 can be an integral part with the range hood back plate 100, for example, the range hood back plate 100 and the range hood lower plate 800 can be formed by an integral stretching process, so that the connection between the range hood back plate 100 and the range hood lower plate 800 is simpler, and the overall cost can also be lower.

[0075] For example, the surrounding body 210 may be provided with an oil leakage hole (not shown in the figure), and the oil droplets in the accommodating cavity 402 may flow out of the accommodating cavity 402 through the oil leakage hole. The oil leakage hole may be provided at the bottom of the surrounding body 210 along the gravity direction. The oil droplets in the volute 200 will flow to the oil leakage hole under the action of gravity, and these oil droplets may flow out of the volute 200 through the oil leakage hole, thereby avoiding excessive oil pollution in the volute 200.

[0076] See also Figure 1 , Figure 5 , Fig.13 and Fig.14 A portion of the range hood back plate 100 is recessed toward the cover body 220 to form a mounting portion 130 having a mounting cavity 131. The mounting portion 130 may surround the mounting cavity 131, and the opening of the mounting cavity 131 may be flush with the range hood back plate 100, that is, the components located in the mounting cavity 131 will not increase the overall thickness of the range hood 10 in the front-to-back direction.

[0077] The mounting portion 130 may be provided with a mounting through hole 132. The motor 900 may be inserted into the mounting through hole 132. The mounting through hole 132 may have an opening size matching the motor 900, and the motor 900 may be inserted into the mounting through hole 132 in various forms such as snap connection, welding or threaded connection. The motor 900 may be divided into a first part 910 and a second part 920 through the mounting through hole 132, the first part 910 may be located in the mounting cavity 131, and the second part 920 may be located in the accommodating cavity 402 and protrude in a direction away from the inner side surface 102 relative to the mounting portion 130. The first part 910 is located in the mounting cavity 131, so that the first part 910 may be located outside the housing of the range hood 10, and the second part 920 may be located in the accommodating cavity 402, so that the second part 920 may be located inside the housing of the range hood 10. The second part 920 may be connected to an impeller, and the second part 920 and the impeller may both be located in the accommodating cavity 402.

[0078] In this way, the mounting portion 130 is formed on the range hood back plate 100, and the motor 900 is directly inserted into the mounting through hole 132 on the mounting portion 130, which is equivalent to directly connecting the motor 900 to the range hood back plate 100, without the need to set the motor bracket in the conventional range hood 10. The mounting portion 130 is formed by a portion of the range hood back plate 100 being recessed toward the cover body 220, and the first portion 910 of the motor 900 located outside the range hood 10 is located in the mounting cavity 131 formed by the mounting portion 130, that is, the motor 900 is not arranged beyond the portion of the range hood back plate 100, and the motor 900 in the range hood 10 occupies less space in the front-to-back direction, so that the overall thickness of the range hood 10 can be smaller.

[0079] In one embodiment of the present invention, see Figure 1 and Fig.14 The mounting portion 130 may have a positioning wall 133 parallel to the range hood back plate 100, and the mounting through hole 132 may be provided through the positioning wall 133. The positioning wall 133 is parallel to the range hood back plate 100, and the mounting through hole 132 is provided through the positioning wall 133, so that the central axis (axis CC in the figure) of the motor 900 passing through the mounting through hole 132 may be perpendicular to the range hood back plate 100, so that the shaking caused by the rotation shaft of the motor 900 when rotating is smaller, and the internal structure of the range hood 10 can be more regular, and the overall structure can be more stable.

[0080] Exemplarily, the positioning wall 133 may have a mounting plane 134 away from the range hood back plate 100, and the mounting plane 134 may be the cover body 220. The second part 920 may be connected to the mounting plane 134. The second part 920 may be connected to the mounting plane 134 in various forms such as snap-on, welding or threaded connection. On the basis that the motor 900 is inserted into the mounting through hole 132, the second part 920 is connected to the mounting plane 134, so that the motor 900 can be more stably connected to the mounting portion 130, and thus the range hood 10 as a whole can be more stable. Moreover, no matter in what form the second part 920 is connected to the mounting plane 134, since the mounting plane 134 has a certain area, it will be relatively simple and convenient to connect the second part 920 to the mounting plane 134, so that the overall installation process of the range hood 10 can be simpler.

[0081] For example, see Fig.14, the second part 920 may be provided with a plurality of connection sections 921, and the plurality of connection sections 921 may be arranged in a ring shape around the central axis CC of the motor 900, and the mounting plane 134 may be provided with a plurality of connection matching parts 1341, and the plurality of connection matching parts 1341 may be located around the mounting through hole 132, and the plurality of connection matching parts 1341 may be connected to the plurality of connection sections 921 one by one. By using fasteners to penetrate the connection sections 921 and the connection matching parts 1341, the second part 920 may be threadedly connected to the mounting plane 134. By connecting the plurality of connection matching parts 1341 to the plurality of connection sections 921 one by one, the connection of the second part 920 to the mounting plane 134 may be more stable, and the setting of the connection sections 921 and the connection matching parts 1341 may make the operation of connecting the second part 920 to the mounting plane 134 simpler. Multiple connecting sections 921 are arranged in a ring around the central axis CC of the motor 900, which can ensure that the motor 900 is more stably connected to the mounting portion 130 in all directions, so that the rotating shaft of the motor 900 is not likely to cause other components to vibrate when rotating, and the overall structure is more stable.

[0082] In one embodiment of the present invention, see Fig.13 The range hood back plate 100 has an outer side surface 101 and an inner side surface 102. The outer side surface 101 is farther away from the cover body 220 than the inner side surface 102. A wiring groove 140 may be formed by being recessed from the outer side surface 101 toward the inner side surface 102. A wire may be connected to the first portion 910, and the wire may be led out through the wiring groove 140. The recessed direction of the wiring groove 140 may be the same as that of the mounting portion 130. The wire connected to the first portion 910 is led out through the wiring groove 140, so that there is no need to reserve space outside the outer side surface 101 of the range hood back plate 100 to arrange these wires. Moreover, the wire connected to the first portion 910 is led out through the wiring groove 140, and the wiring groove 140 may play a role in organizing the wires, thereby preventing the wires connected to the first portion 910 from being too messy.

[0083] For example, see Figure 1 and Fig.13 The wiring groove 140 may have a first end 141 and a second end 142 that are arranged opposite to each other. The first end 141 may be connected to the mounting portion 130, and the second end 142 may be provided with a through hole 1421 that may penetrate the bottom of the wiring groove 140. The wires connected to the first portion 910 need to be connected to the power supply in the housing of the range hood 10, so the wires may enter the housing of the range hood 10 through the through hole 1421 on the wiring groove 140. By providing such a wiring groove 140, it is further possible to prevent the wires connected to the first portion 910 from being too messy.

[0084] For example, see Figure 1 and Fig.13 A portion of the range hood back plate 100 may be recessed in a direction away from the cover body 220 to form a recessed portion 120, and the range hood back plate 100 has a peripheral portion 150 surrounding the recessed portion 120, the first end 141 is disposed on the recessed portion 120, and the second end 142 is disposed on the peripheral portion 150. The power supply inside the housing of the range hood 10 is usually located outside the volute 200, so that the wire connected to the first part 910 can enter the housing of the range hood 10 through the through hole 1421 on the second end 142 after entering the wiring groove 140 from the installation cavity 131, so as to be connected to the power supply. With such a wiring groove 140, the internal wiring of the range hood 10 as a whole is more regular, which can avoid the safety hazards caused by the messy wiring of the wires.

[0085] For example, the wiring groove 140 forms a notch on the side away from the inner side 102, and a cover plate (not shown in the figure) covering the notch is connected to the outer side 101. The cover plate can limit the wires in the wiring groove 140, and the cover plate can protect the wires in the wiring groove 140 to prevent the wires from being damaged by external factors, so that the overall stability of the range hood 10 can be better.

[0086] For example, see Figure 1 , Figures 10 to 14 , a sealing ring 930 may be sleeved on the motor 900, and the sealing ring 930 may be connected to the mounting through hole 132. The sealing ring 930 may be annular, and the motor 900 may pass through the sealing ring 930 so as to realize that the sealing ring 930 is sleeved on the motor 900. The sealing ring 930 may be connected to the mounting through hole 132 in various forms such as snap connection, welding or threaded connection. By providing the sealing ring 930, the oil retained inside the range hood 10 can be prevented from flowing to the outside of the housing of the range hood 10 when the range hood 10 is sucking oil smoke.

[0087] For example, see Fig.14 The periphery of the sealing ring 930 may be provided with an annular clamping groove 931, and the clamping groove 931 may be clamped to the edge of the mounting through hole 132. The sealing ring 930 is connected to the mounting through hole 132 by clamping the clamping groove 931 to the edge of the mounting through hole 132, so that the overall structure is simpler and easier to implement, and the process of setting the clamping groove 931 on the sealing ring 930 is simpler, and the overall structure is easier to produce and process.

[0088] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contours of each component itself.

[0089] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0090] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0091] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0092] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A range hood, characterized in that: It includes a range hood back plate, a volute and an air outlet seat, wherein the range hood back plate and the volute are combined to form a receiving cavity with an air outlet, and the air outlet seat is connected to the air outlet; Among them, the air outlet has a first edge, and the first edge is flush with the back panel of the range hood; the air outlet seat has a fixed port and an air outlet port arranged away from the fixed port, and the fixed port is connected with the air outlet port to form an air outlet channel, and the center line of the air outlet channel gradually tilts from the fixed port to the air outlet port away from the back panel of the range hood.

2. The range hood according to claim 1, characterized in that: An angle α is formed between the center line of the air outlet passage and the plane where the range hood back plate is located, and the angle α is 10° to 25°.

3. The range hood according to claim 1, characterized in that: The top of the range hood back plate is connected to a range hood top plate, the range hood top plate has a connecting edge connected to the range hood back plate, the range hood top plate is provided with a notch corresponding to the air outlet, and the notch extends from the connecting edge in a direction away from the range hood back plate.

4. The range hood according to claim 3, characterized in that: The top plate of the range hood is recessed around the notch toward the accommodating cavity to form a sinking portion, and an oil blocking member is arranged in the sinking portion.

5. The range hood according to claim 4, characterized in that: The air outlet seat is provided with a docking portion around the fixed port; the oil baffle member has an oil baffle portion and a connecting portion with an opening in the middle, the opening corresponds to the notch, the connecting portion is located between the bottom wall of the sinking portion and the docking portion, the oil baffle portion extends from the outer edge of the connecting portion toward the air outlet port, and part of the oil baffle portion abuts against the side wall of the sinking portion, and part of the oil baffle portion abuts against the back panel of the range hood.

6. The range hood according to claim 5, characterized in that: A sealing member having a through hole in the middle is provided between the connecting portion and the docking portion, and the through hole corresponds to the opening.

7. The range hood according to claim 6, characterized in that: The end surface of the sealing member close to the docking portion is concave with a groove toward the connecting portion, and the side wall of the groove is in contact with the oil retaining portion.

8. The range hood according to claim 1, characterized in that: The fixed port is configured as a rectangle with a length of L1 and a width of L2, and the air outlet port is configured as a circle with a diameter of D, wherein L2≤D and L1≥D.

9. The range hood according to claim 5, characterized in that: The air outlet also has a second side, a third side and a fourth side, the second side is opposite to the first side, the third side is opposite to the fourth side, and the third side and the fourth side are connected between the second side and the first side; the volute includes a surrounding body portion and a cover body portion, the second side is formed on the cover body portion, and the third side and the fourth side are respectively formed at both ends of the surrounding body portion along a predetermined extension direction.

10. The range hood according to claim 9, characterized in that: The surrounding body portion has a first connecting edge and a second connecting edge that are arranged opposite to each other. The first connecting edge and the second connecting edge both extend along the predetermined extension direction. The first connecting edge is connected to the range hood back plate, and the second connecting edge is connected to the cover body portion.

11. The range hood according to claim 10, characterized in that: A portion of the range hood back plate is recessed in a direction away from the cover body to form a recessed portion, and the first connecting edge is connected to the recessed portion and is located in the recessed portion.

12. The range hood according to claim 11, characterized in that: The recessed portion has a positioning side wall extending along the predetermined extension direction, the first connecting edge abuts against the positioning side wall, and a portion of the oil retaining portion abuts against the positioning side wall.

13. The range hood according to claim 11, characterized in that: The recessed portion has a mounting surface facing the cover body portion, and the first connecting edge is provided with a flange parallel to the mounting surface and extending toward the outside of the accommodating cavity. The flange is located in the recessed portion and connected to the mounting surface, and part of the oil retaining portion abuts against the mounting surface.

14. The range hood according to claim 13, characterized in that: The recessed portion has a positioning side wall extending along the predetermined extension direction, the flange at least partially abuts against the positioning side wall, and part of the oil retaining portion abuts against the positioning side wall.

15. The range hood according to claim 13, characterized in that: The flange is provided with a plurality of threaded holes, the mounting surface is provided with a plurality of threaded matching holes, and the plurality of threaded holes and the plurality of threaded matching holes are respectively connected in a one-to-one correspondence.

16. The range hood according to claim 9, characterized in that: The docking portion is connected to the air outlet through a connecting member, and the connecting member has a first connecting portion, a second connecting portion and a third connecting portion, the second connecting portion and the third connecting portion are respectively connected to two ends of the first connecting portion, the first connecting portion is connected to the second side, the second connecting portion is connected to the third side, and the third connecting portion is connected to the fourth side.

17. The range hood according to claim 9, characterized in that: The range hood back plate is extended toward the cover body at one end away from the air outlet to form a range hood lower plate.

18. The range hood according to claim 9, characterized in that: The surrounding body is provided with an oil leakage hole, and the oil droplets in the accommodating cavity flow out of the accommodating cavity through the oil leakage hole.

19. The range hood according to claim 9, characterized in that: The range hood further comprises a motor, a portion of the range hood back plate is recessed toward the cover body to form a mounting portion having a mounting cavity, a mounting through hole is provided on the mounting portion, and the motor is passed through the mounting through hole; The motor is divided into a first part and a second part through the mounting through hole, the first part is located in the mounting cavity, and the second part is located in the accommodating cavity and protrudes relative to the mounting portion toward the cover body portion.

20. The range hood according to claim 19, characterized in that: The mounting portion has a positioning wall parallel to the back plate of the range hood, and the mounting through hole is arranged through the positioning wall.

21. The range hood according to claim 20, characterized in that: The positioning wall has a mounting plane away from the range hood back plate, and the second portion is connected to the mounting plane.

22. The range hood according to claim 21, characterized in that: The second part is provided with a plurality of connection sections, which are arranged in a ring shape around the central axis of the motor; the mounting plane is provided with a plurality of connection fitting parts, which are located around the mounting through hole, and the plurality of connection fitting parts are respectively connected one by one with the plurality of connection sections.

23. The range hood according to claim 19, characterized in that: The range hood back plate has an outer side and an inner side, the outer side is farther away from the cover body than the inner side, a wiring groove is formed from the outer side toward the inner side, a wire is connected to the first part, and the wire is led out through the wiring groove.

24. The range hood according to claim 23, characterized in that: The wiring trough has a first end and a second end that are arranged opposite to each other, the first end is connected to the mounting portion, and a through hole is arranged on the second end, and the through hole passes through the bottom of the wiring trough.

25. The range hood according to claim 24, characterized in that: A portion of the range hood back plate is recessed in a direction away from the cover body to form a recessed portion, and the range hood back plate has an outer portion surrounding the recessed portion, the first end is arranged on the recessed portion, and the second end is arranged on the outer portion.

26. The range hood according to claim 23, characterized in that: The wiring trough forms a notch on a side away from the inner side surface, and the outer side surface is connected to a cover plate covering the notch.

27. The range hood according to claim 19, characterized in that: A sealing ring is sleeved on the motor, and the sealing ring is connected to the mounting through hole.

28. The range hood according to claim 27, characterized in that: The periphery of the sealing ring is provided with an annular clamping groove, and the clamping groove is clamped to the edge of the mounting through hole.

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