Range hood

Abstract

The invention discloses a range hood. The range hood is provided with a front side and a rear side opposite to the front side in the first direction. The range hood comprises a rack, a smoke collecting assembly and an air outlet device. The smoke collecting assembly is installed on the machine frame, the machine frame and the smoke collecting assembly are arranged in the second direction, and the smoke collecting assembly is provided with an air inlet used for sucking smoke. The air outlet device is installed on the smoke collecting assembly, the air outlet device is provided with an air outlet, in the third direction, the air outlet device is arranged on at least one side of the air inlet, and the third direction is perpendicular to the first direction and the second direction; the air outlet direction of the air outlet at least has a component facing the rear side. In this way, the smoke suction effect of the range hood can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a range hood. BACKGROUND

[0002] In modern kitchens, a range hood can exhaust the oil fume generated in the cooking process to ensure the cleanliness and health of the kitchen environment. With the continuous development of range hood technology, further requirements are put forward for the performance of the range hood. The smoke suction effect of the range hood is one of the major indicators of the performance of the range hood, and the improvement of the smoke suction effect of the range hood is a content that needs continuous research and innovation. Especially in the case where the size of the range hood needs to be smaller, it is still necessary to further explore how to ensure the smoke suction effect of the range hood. SUMMARY

[0003] Embodiments of the present application provide a range hood, which can improve the smoke suction effect of the range hood.

[0004] Embodiments of the present application provide a range hood. The range hood has a front side and a rear side opposite to the front side in a first direction. The range hood comprises a machine frame, a smoke collecting assembly and an air outlet device. The smoke collecting assembly is installed on the machine frame, the machine frame and the smoke collecting assembly are arranged in a second direction, and the smoke collecting assembly has an air inlet for sucking in smoke. The air outlet device is installed on the smoke collecting assembly, the air outlet device has an air outlet, and in a third direction, the air outlet device is arranged on at least one side of the air inlet, and the third direction is perpendicular to the first direction and the second direction; the air outlet has an air outlet direction which has at least a component towards the rear side.

[0005] Optionally, the smoke collecting assembly comprises a smoke suction plate, a front plate and a rear plate, the front plate is located on the front side of the smoke suction plate, the rear plate is located on the rear side of the smoke suction plate, and the air inlet is arranged on the smoke suction plate in the first direction; the smoke suction plate, the front plate and the rear plate surround to form a smoke collecting cavity which is directed away from the machine frame in the second direction, the air outlet device is arranged on the side of the smoke suction plate away from the machine frame, and the air outlet device is arranged on the part of the smoke collecting cavity close to the front side.

[0006] Optionally, in the second direction, the distance between the end of the air outlet close to the smoke collecting assembly and the smoke suction plate is less than or equal to 25 mm.

[0007] Optionally, in the second direction, the distance between the end of the air outlet away from the smoke collecting assembly and the end surface of the smoke collecting assembly close to the front side and away from the machine frame is less than or equal to 15 mm.

[0008] Optionally, in the second direction, the end of the smoke suction plate close to the front plate is located on the side away from the machine frame compared with the end of the smoke suction plate close to the rear plate.

[0009] Optionally, the range hood further comprises an oil cup, the oil cup is installed on the part of the smoke collecting cavity close to the front plate, and at least one side of the oil cup in the third direction is provided with the air outlet device.

[0010] Optionally, the oil cup is detachably mounted on the front plate, and the oil cup is arranged on the front plate at a side close to the rear plate, and the oil cup is arranged to slide in the first direction for mounting or dismounting the oil cup.

[0011] Optionally, the air outlet direction of the air outlet has a component away from the air inlet direction in the third direction.

[0012] Optionally, at least part of the edge of the air outlet away from the air inlet side in the third direction is closer to the front side than the edge of the air outlet close to the air inlet side in the third direction.

[0013] Optionally, the edge of the air outlet away from the air inlet side in the third direction has a first section close to the smoke collection assembly and a second section away from the smoke collection assembly in the second direction, and the second section is closer to the front side than the first section.

[0014] Optionally, in the third direction, the distance between the edge of the air outlet away from the air inlet side and the edge of the air outlet close to the air inlet side is less than or equal to 25 mm.

[0015] Optionally, the air outlet direction of the air outlet has no component towards the front side in the first direction,

[0016] and / or, the air outlet direction of the air outlet has no component towards the air inlet in the third direction.

[0017] Optionally, the distance between the side of the rack facing the front side and the side of the front plate facing the front side in the first direction is less than or equal to 15 mm.

[0018] Optionally, in the third direction, both sides of the air inlet are provided with at least one air outlet device.

[0019] The beneficial effects of the present application are: different from the prior art, the air outlet device blows air to the rear side, which can drive the airflow below the smoke collection assembly to move towards the rear side, so as to gather the smoke as much as possible below the smoke collection assembly, and then enter the air inlet and be discharged through the rack. Further, since the air outlet device mainly blows air towards the rear side, the main position of the air curtain or airflow generated by the air outlet device is limited to the position close to the smoke collection assembly, thereby reducing the additional disturbance to the main smoke field. Further, the airflow blown to the rear side can flow along the wall after hitting the wall, thereby offsetting the smoke to the wall and optimizing the front side smoke suction effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a first embodiment of a smoke machine of the present application;

[0021] Figure 2 is a structural schematic diagram of a first embodiment of a smoke machine of the present application;

[0022] Figure 3 is Figure 2 a bottom view of the range hood shown in FIG. 1;

[0023] Figure 4 is Figure 3 a sectional view of the smoke collecting assembly at the air outlet device in the range hood shown in FIG. 1;

[0024] Figure 5 is Figure 4 a schematic view of the sectional view of the smoke collecting assembly from another angle;

[0025] Figure 6 is Figure 2 a structural schematic view of an embodiment of the air outlet device in the range hood shown in FIG. 1;

[0026] Figure 7 is Figure 2 a structural schematic view of another embodiment of the air outlet device in the range hood shown in FIG. 1;

[0027] Figure 8 is Figure 2 a structural schematic view of still another embodiment of the air outlet device in the range hood shown in FIG. 1

[0028] Figure 9 is a structural schematic view of a second embodiment of the range hood of the present application;

[0029] Figure 10 is Figure 9 a structural schematic view of an embodiment of the air outlet device of the range hood shown in FIG. 1;

[0030] Figure 11 is Figure 9 a bottom view of the range hood shown in FIG. 1;

[0031] Figure 12 is Figure 11 a sectional view of the smoke collecting assembly at the air outlet device in the range hood shown in FIG. 1;

[0032] Figure 13 is Figure 12 a schematic view of the sectional view of the smoke collecting assembly from another angle;

[0033] Figure 14 is a structural schematic view of a third embodiment of the range hood of the present application;

[0034] Figure 15 is Figure 14 a structural schematic view of an embodiment of the air outlet device of the range hood shown in FIG. 1;

[0035] Figure 16 is Figure 14 a bottom view of the range hood shown in FIG. 1;

[0036] Figure 17 is Figure 16 a sectional view of the smoke collecting assembly at the air outlet device in the range hood shown in FIG. 1;

[0037] Figure 18 is Figure 17 is a schematic view of the smoke collection assembly from another angle;

[0038] Figure 19 is a structural schematic view of a fourth embodiment of the range hood. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] In combination with Figure 1 , the present application provides a range hood 1. The range hood 1 comprises a frame 10 and a smoke collection assembly 20, and the smoke collection assembly 20 is provided with an air inlet 231. The smoke collection assembly 20 is installed on the frame 10, and the range hood 1 can be installed on a wall or the like installation position through the frame 10. The range hood 1 has a mounting surface, for example, in the case where the range hood 1 is installed on a wall, the surface of the range hood 1 abutting against the wall is the mounting surface of the range hood 1. The frame 10 is provided with an exhaust port (not shown in the figure), and the exhaust port can be connected to an external flue through a pipeline. A volute is further provided in the frame 10, and a centrifugal fan wheel is arranged in the volute. The volute can be in communication with the inside of the smoke collection assembly 20, and the convection generated by the rotation of the centrifugal fan wheel can drive the gas in the smoke collection assembly 20 to be discharged through the exhaust port. The smoke collection assembly 20 is installed on the frame 10, and the smoke collection assembly 20 can collect and gather the flue gas, which is then discharged through the frame 10.

[0041] It should be noted that, for the convenience of description, the present application exemplarily describes the relative positional relationship of the components by introducing a first direction (in combination with X in the figures), a second direction (in combination with Y in the figures) and a third direction (in combination with Z in the figures). Among them, the range hood 1 has a front side close to the user and a rear side opposite to the front side in the first direction. In the use scene of the kitchen, the front side is the side facing the user, and the rear side is the side facing the wall. The second direction is the arrangement direction of the frame 10 and the smoke collection assembly 20. The third direction is perpendicular to the first direction and the second direction. In some embodiments, the first direction is the front-rear direction, the second direction is the up-down direction, and the third direction is the left-right direction for the user. Alternatively, the first direction, the second direction and the third direction are perpendicular to each other.

[0042] In combination with Figure 2 , Figure 9 , Figure 14 and Figures 2 to 8In some embodiments, the range hood 1 comprises a frame 10, a smoke collection assembly 20 and an air outlet device 30. The smoke collection assembly 20 has an air inlet 231 for sucking in smoke. The smoke can be discharged from the air inlet 231 through the smoke collection assembly 20 and the frame 10. The smoke collection assembly 20 comprises a smoke suction plate 23, a front plate 21 and a rear plate 22. In a first direction, the front plate 21 is located at the front side of the smoke suction plate 23, and the rear plate 22 is located at the rear side of the smoke suction plate 23, and the air inlet 231 is arranged on the smoke suction plate 23. The smoke suction plate 23, the front plate 21 and the rear plate 22 surround to form a smoke collection cavity facing away from the frame 10 in a second direction, and the air outlet device 30 is arranged on the side of the smoke suction plate 23 away from the frame 10. In the second direction, the end of the smoke suction plate 23 close to the front plate 21 is located on the side away from the frame 10 compared to the end of the smoke suction plate 23 close to the rear plate 22. In the range hood 1 provided in the present application, the smoke suction plate 23 is arranged in an inverted manner with the front low and the rear high, so that the radiation direction of the pressure of the range hood 1 can be optimized, the area of the negative pressure zone is increased, and the smoke suction effect is improved. Optionally, the distance between the smoke suction plate 23 and the frame 10 gradually decreases in the direction from the front side to the rear side. In other words, the smoke suction plate 23 is arranged in an inclined manner with the front low and the rear high. Optionally, the smoke collection assembly 20 further comprises two side plates arranged oppositely, and the two side plates are connected to the front plate 21 and the rear plate 22 respectively.

[0043] In some embodiments, the interval between the side surface of the frame 10 facing the front side and the side surface of the front plate 21 facing the front side in the first direction is less than or equal to 15 mm. In this way, the front side of the smoke collection assembly 20 protrudes less compared to the frame 10, and the range hood 1 is more easily leveled with the front side of the cabinet or directly embedded in the cabinet without the front side exposed in the user's field of view in the case of cooperation with the cabinet. Through the above technical means, the range hood 1 can be installed in a hidden manner at all times, which is beneficial to the aesthetics of the kitchen.

[0044] In some embodiments, the interval between the front plate 21 and the rear plate 22 is less than or equal to 370 mm and greater than or equal to 300 mm. In this way, the smoke collection assembly 20 can have a smaller size, so that the front side of the smoke collection assembly 20 can protrude less from the cabinet in the case of cooperation with the wall surface at the rear side, which is beneficial to leveling the front side of the range hood 1 with the cabinet or installing the range hood 1 in a hidden manner at all times.

[0045] In some embodiments, the air outlet device 30 is arranged on the side of the smoke suction plate 23 away from the rack 10, and the air outlet device 30 is arranged on at least one side of the air inlet 231. The air outlet device 30 can change the flow field through air outlet, so as to promote the backward movement of the flue gas and reduce the possibility of flue gas leakage from the front side of the smoke machine 1. By arranging the air outlet device 30 to promote the backward movement of the flue gas, the technical problem that the flue gas is prone to leak from the front side due to the reduction of the size of the smoke collection assembly 20 in the first direction in the aforementioned full-time hidden design can be solved. Alternatively, the air source in the air outlet device 30 can be an air flow generating device, for example, the smoke collection assembly 20 is provided with an air flow generating device, and the air flow generating device can be a fan to drive air flow to enter from the upper side or the outer side of the smoke collection assembly 20, and then provide the air flow to the air outlet device 30. The air flow generating device can also be an external device, which is not limited here.

[0046] Specifically, the air outlet device 30 can interfere with the flow field by changing the air outlet direction and the size of the air outlet amount, so as to promote the backward movement of the flue gas. In general, the air outlet device 30 can interfere with the flow direction of the flue gas in the following aspects.

[0047] First, jet injection. When a high-speed air jet flows in the smoke collection cavity, it can cause the adjacent air flow to move along the jet direction through shear force, thereby achieving the effect of flow guiding. Therefore, when the air outlet direction of the air outlet device 30 has a component towards the rear side, the flue gas can be guided to move backward.

[0048] Second, lateral injection. When there is an attached wall air flow near the wall, it can cause the flue gas to deviate towards the air flow direction, thereby optimizing the front side smoke suction effect.

[0049] Third, shielding effect. The air outlet of the air outlet device 30 can form an air curtain, which can reduce the air supply to the lateral hot plume of the flue gas field through the air curtain, so that the air supply is more from the front end, thereby adding a force directed to the wall surface, so that the flue gas can flow towards the rear side. Specifically, the air inlet of the air inlet 231 of the smoke machine 1 enters from the four sides below the smoke machine 1. By arranging the air curtain to shield the sides except the front side, the air inlet of the shielding side can be reduced. In the case that the smoke suction power of the smoke machine 1 is unchanged, the air supply from the front side will increase, thereby promoting the backward movement of the flue gas.

[0050] It should be noted that in the embodiments of the present application, the component of the air outlet direction of the air outlet 34 in a specific direction is used multiple times. The air outlet direction of the air outlet 34 refers to the normal of the plane on which the air outlet 34 is located. The component of the air outlet direction of the air outlet 34 in a specific direction refers to the projection of the normal of the plane on which the air outlet 34 is located in the specific direction. In different embodiments of the present application, there are also comparisons of the components of the air outlet direction of the air outlet 34 in different directions. Taking the comparison of the components of the air outlet direction of the air outlet 34 in the first direction and the second direction as an example, the component of the air outlet direction of the air outlet 34 in the first direction is greater than the component in the second direction, that is, the angle between the air outlet direction of the air outlet 34 and the first direction is smaller than the angle between the air outlet direction of the air outlet 34 and the second direction. Similarly, the component of the air outlet direction of the air outlet 34 in the first direction is smaller than the component in the second direction, that is, the angle between the air outlet direction of the air outlet 34 and the first direction is greater than the angle between the air outlet direction of the air outlet 34 and the second direction.

[0051] The cooperation of the air outlet device 30 with the smoke machine 1 and the structure of the air outlet device 30 will be exemplarily introduced below in combination with specific embodiments. Among them, the air outlet device 30 has multiple different embodiments, and the multiple different embodiments can be combined with each other without contradiction, which is still within the protection scope of the present application. Alternatively, in the third direction, at least one air outlet device 30 is arranged on each side of the air inlet 231. Among them, one or more air outlet devices 30 can be arranged on the same side of the air inlet 231, and the air outlet device 30 can be any one of the embodiments described below. The air outlet devices 30 arranged on the two sides of the air inlet 231 can be the same or different, and the air outlet devices 30 arranged on the two sides of the air inlet 231 can be any one of the embodiments described below.

[0052] In combination with Figures 6 to 8 In some embodiments, the air outlet device 30 is installed on the smoke collecting assembly 20, and the air outlet device 30 has an air outlet 34. In the third direction, the air outlet direction of the air outlet 34 at least has a component towards the rear side. By blowing air to the rear side through the air outlet device 30, the airflow below the smoke collecting assembly 20 can be driven to move towards the rear side, so that the smoke is gathered as much as possible below the smoke collecting assembly 20, and then enters the air inlet 231 and is discharged through the rack 10. Further, since the air outlet device 30 mainly blows air towards the rear side, the main position of the air curtain or airflow generated by the air outlet device 30 is limited to the position close to the smoke collecting assembly 20, thereby reducing the additional disturbance to the main smoke field. Further, the airflow blown to the rear side can flow along the wall surface after hitting the wall surface, so as to offset the smoke to the wall surface, thereby optimizing the smoke suction effect on the front side. Alternatively, the air outlet direction of the air outlet 34 can also have a component in the second direction away from the rack 10, and the component of the air outlet direction of the air outlet 34 towards the rear side is greater than the component in the second direction away from the rack 10.

[0053] Specifically, the relationship between the air outlet device 30 and the air inlet 231 can be that, in the first direction, the projection of the air outlet device 30 does not coincide with the air inlet 231. In the third direction, the air outlet device 30 is located on one side or both sides of the air inlet 231. In the third direction, the air outlet device 30 can partially coincide with the projection of the air inlet 231. Alternatively, in the third direction, the air outlet device 30 can not coincide with the projection of the air inlet 231. In other words, in the third direction, the air inlet 231 can be partially or not present between the two air outlet devices 30. The air outlet device 30 can be located in front of the air inlet 231 in the first direction. Alternatively, the air outlet device 30 can be located on both sides of the air inlet 231 in the first direction. By locating the air outlet device 30 on both sides of the air inlet 231 in the third direction, the projection of the air outlet device 30 in the first direction does not coincide with the air inlet 231, which can reduce the influence of the air outlet of the air outlet device 30 on the air inlet of the air inlet 231.

[0054] In the present embodiment, the air outlet device 30 is arranged near the front side of the smoke collecting cavity. By arranging the air outlet device 30 near the front side of the smoke collecting cavity, the air blowing from the air outlet device 30 towards the rear side can blow a longer distance, and the airflow can more fully drive the smoke towards the rear side, which is conducive to improving the smoking effect.

[0055] In some embodiments, in the second direction, the distance between the air outlet 34 and the end of the smoke collecting assembly 20 near the smoking plate 23 is less than or equal to 25 mm. In other words, the distance between the upper end of the air outlet 34 and the smoking plate 23 is less than or equal to 25 mm. For example, it can be 15 mm, 20 mm, or 25 mm, etc. If the distance between the upper end of the air outlet 34 and the smoking plate 23 is too large, the size of the air outlet 34 in the second direction will be limited, which can easily lead to insufficient air volume of the air outlet 34.

[0056] In some embodiments, in the second direction, the distance between the end of the air outlet 34 away from the smoke collection assembly 20 and the end surface of the smoke collection assembly 20 close to the front side and away from the rack 10 is less than or equal to 15 mm. In other words, the distance between the lower end of the air outlet 34 and the lower end surface of the smoke collection assembly 20 close to the front side is less than or equal to 15 mm. In the case where the lower end of the air outlet 34 is higher than the lower end surface of the smoke collection assembly 20 close to the front side, by setting the distance between the lower end of the air outlet 34 and the lower end surface of the smoke collection assembly 20 close to the front side to be less than or equal to 15 mm, the air outlet 34 can have sufficient length in the second direction, so that the air outlet 34 has sufficient air outlet area. In the case where the lower end of the air outlet 34 is lower than the lower end surface of the smoke collection assembly 20 close to the front side, by setting the distance between the lower end of the air outlet 34 and the lower end surface of the smoke collection assembly 20 close to the front side to be less than or equal to 15 mm, the air outlet 34 can be less protruding downward from the smoke collection assembly 20, and thus the range hood 1 can be less protruding downward from the smoke collection assembly 20, which is beneficial to the consistency and aesthetics of the appearance of the range hood 1.

[0057] In some embodiments, the range hood 1 further comprises an oil cup 40, which is installed on the portion of the smoke collection cavity close to the front plate 21. In the embodiments of the present application, the oil cup 40 is arranged on the portion of the smoke collection cavity close to the front side, which is different from the range hood 1 in the related art.

[0058] Specifically, the oil cup 40 is arranged in the first direction for installation or disassembly of the oil cup 40. The user can pull out the oil cup 40 from the front end of the smoke collection assembly 20, and such a connection mode has high reliability, is convenient to take and install, and has low cost. Optionally, the side of the oil cup 40 facing the smoke collection cavity can have a flow guide slope, which can better send the flue gas to the air inlet 231. At least one side of the oil cup 40 in the third direction is provided with the air outlet device 30. The air outlet device 30 is arranged on both sides of the oil cup 40, which can make the arrangement position of the air outlet device 30 on the oil cup 40 cooperate, so that the front end of the smoke collection cavity has a relatively regular structure and does not affect the implementation of the functions of the oil cup 40 and the air outlet device 30. For example, in the case where the smoke collection assembly 20 is further provided with a side plate, installation spaces can be respectively formed between the two sides of the oil cup 40 and the side plate, and the air outlet device 30 can be installed in the installation spaces. In this way, the oil cup 40 and the air outlet device 30 are arranged without affecting the implementation of their own functions, and less affect the space structure of the smoke collection cavity, and are more beautiful.

[0059] Further, the oil cup 40 is detachably installed on the front plate 21, and the oil cup 40 is arranged on the side of the front plate 21 close to the rear plate 22. In this way, the oil cup 40 can be hidden behind the front plate 21, which is beneficial to the consistency and aesthetics of the range hood 1. Optionally, the oil cup 40 can also be arranged on the side of the front plate 21 away from the rack 10 in the second direction, i.e., below the front plate 21.

[0060] In some embodiments, the air outlet direction of the air outlet 34 has a component in the third direction away from the air inlet 231. In other words, the air outlet of the air outlet 34 is not only towards the back side, but also towards the outer side. By setting the air outlet direction of the air outlet 34 towards the outer side, the air outlet of the air outlet device 30 blowing towards the air inlet 231 can be reduced, and thus the influence of the air outlet of the air outlet device 30 on the air inlet at the air inlet 231 can be reduced, thereby achieving the purpose of controlling the air outlet of the air outlet device 30 from causing undesirable interference to the smoke exhaust.

[0061] In combination Figures 9 to 13 In some embodiments, at least part of the edge of the air outlet 34 away from the air inlet 231 in the third direction is closer to the front side than the edge of the air outlet 34 close to the air inlet 231 in the third direction. In other words, the edge of the air outlet 34 on the outer side is closer to the front side than the edge on the inner side, thereby reducing the air outlet of the air outlet 34 towards the air inlet 231. In this way, at least the air outlet towards the air inlet 231 can be blocked by the edge of the air outlet 34 on the back side. Optionally, the dimension of the side wall of the air outlet device 30 corresponding to the air outlet 34 on the inner side in the first direction is greater than the dimension of the side wall of the air outlet device 30 corresponding to the air outlet 34 on the outer side in the first direction.

[0062] In some embodiments, the edge of the air outlet 34 away from the air inlet 231 in the third direction has a first section close to the smoke collection assembly 20 and a second section away from the smoke collection assembly 20 in the second direction, and the second section is closer to the front side than the first section. In other words, the edge of the air outlet 34 on the outer side can not be all closer to the front side, and there can be part of the edge of the air outlet 34 on the outer side flush with the edge of the air outlet 34 on the inner side in the third direction. In this way, the air outlet of the air outlet 34 can have a component towards the outer side, while the appearance of the air outlet device 30 can match the oil cup 40 and the side plate, enhancing the aesthetic appearance.

[0063] In some embodiments, in the third direction, the distance between the edge of the air outlet 34 away from the air inlet 231 and the edge of the air outlet 34 close to the air inlet 231 is less than or equal to 25 mm. In other words, the width of the air outlet 34 in the third direction is less than or equal to 25 mm. For example, 20 mm, 15 mm, 10 mm, or 5 mm. If the width of the air outlet 34 in the third direction is too large, the air flow in the third direction towards the two sides will increase, which will destroy the original smoke collection cavity flow field structure and reduce the smoking effect.

[0064] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the front side in the first direction. In this embodiment, the smoke needs to be drawn rearwardly, and if the air outlet direction of the air outlet device 30 arranged at the front side has a component towards the front side, the smoke will be blown towards the front side, resulting in dissipation towards the front side.

[0065] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the air inlet 231 in the third direction. The smoke needs to enter the range hood 1 from the air inlet 231 and then be discharged, and if the air outlet direction of the air outlet device 30 has a component towards the air inlet 231, it will affect the smoke suction effect at the air inlet 231.

[0066] In combination Figure 10 In some embodiments, the air outlet direction of the air outlet 34 has at least a component towards the rear side and a component away from the machine frame 10 in the second direction. In other words, the air outlet direction of the air outlet 34 is towards the rear side and downwards. Through the downward component of the air outlet direction of the air outlet 34, an air curtain can be formed below the range hood 1 on both sides of the third direction. The air curtain formed by the air outlet device 30 can shield both sides, thereby reducing the air supplement from both sides to the middle air inlet 231 during the smoke exhaust process. In the case of consistent suction of the range hood 1, the reduction of air supplement on both sides of the third direction will increase the air supplement on both sides of the first direction. For the front side of the range hood 1, the increase of the front side air supplement can promote the smoke on the front side to move towards the rear side, so as to optimize the smoke suction effect of the range hood 1. Further, when the range hood 1 is installed on the wall surface, the wall surface on the rear side will also shield the air supplement on the rear side, so that the air supplement on the front side will be further increased, thereby further promoting the rearward movement of the smoke on the front side. Through the rearward component of the air outlet direction of the air outlet 34, on the one hand, it can attract the airflow to flow towards the rear side through the shearing force, thereby producing a rearward flow effect on the smoke. On the other hand, it can blow the airflow towards the wall surface, thereby producing an airflow that flows along the wall surface on the front side, so as to further offset the airflow towards the direction close to the wall surface, thereby further optimizing the smoke suction effect. In this embodiment, the air outlet device 30 is arranged at the portion of the smoke collecting cavity close to the front side.

[0067] In some embodiments, the component of the air outlet direction of the air outlet 34 away from the machine frame 10 in the second direction is greater than the component of the air outlet direction of the air outlet 34 towards the rear side. In other words, the angle between the air outlet direction of the air outlet 34 and the second direction is smaller than the angle between the air outlet direction of the air outlet 34 and the first direction. In this way, the air outlet of the air outlet 34 can be inclined downwardly and rearwardly from the air outlet device 30. In this way, the air outlet of the air outlet device 30 can reduce the amount of air directly blown to the cooking surface while forming an air curtain to shield, thereby reducing the influence of the air outlet device 30 on the operation of the stove.

[0068] In some embodiments, the angle between the plane on which the air outlet 34 lies and the first direction is greater than 0 degrees and less than or equal to 30 degrees. If the angle between the plane on which the air outlet 34 lies and the first direction is less than or equal to 0 degrees, the air outlet 34 is difficult to generate a rear component. If the angle between the plane on which the air outlet 34 lies and the first direction is greater than 30 degrees, the rear component of the air outlet 34 is large, and the downward component is small, which is easy to cause the air curtain generated by the air outlet 30 to fail to effectively shield.

[0069] In some embodiments, the length of the air outlet 34 in the first direction is less than the length of the air inlet 231 in the first direction. The air outlet 34 can be arranged in a long strip shape, thereby more conveniently forming an air curtain to play a shielding role.

[0070] Specifically, in some embodiments, the length of the air outlet 34 in the first direction is between 100 mm and 125 mm. In some embodiments, in the third direction, the distance between the edge of the air outlet 34 away from the air inlet 231 and the edge of the air outlet 34 close to the air inlet 231 is less than or equal to 4 mm.

[0071] In some embodiments, the air outlet 30 includes a first side wall 31 close to the rear side in the first direction, and the first side wall 31 close to the rear side in the first direction is closer to the front side in the second direction than the first side wall 31 away from the rear side in the first direction. In other words, the first side wall 31 close to the rear side of the air outlet 30 in the second direction away from the rack 10 is inclined and extends rearward. In this way, the flow loss of the airflow inside the air outlet 30 can be reduced, and the flow of the air outlet 34 in the part close to the rear side can be increased. The first side wall 31 can guide the gas inside the air outlet 30, reduce the obstruction of the airflow inside the air outlet 30, and smoothly guide the gas to the air outlet 34. Optionally, the first side wall 31 in the second direction can have an upper first part and a lower second part. The first part is closer to the front side in the second direction than the part away from the rack 10 in the second direction, and the second part is located on the side of the first part close to the rear side in the first direction.

[0072] In some embodiments, the air outlet device 30 further comprises a second side wall 32 and a third side wall 33 arranged in the third direction, the first side wall 31, the second side wall 32 and the third side wall 33 form an air outlet 34 therebetween, the distance between the second side wall 32 and the third side wall 33 of the portion of the air outlet device 30 close to the rack 10 in the second direction is greater than the distance between the second side wall 32 and the third side wall 33 of the portion of the air outlet device 30 away from the rack 10 in the second direction. In other words, the dimension of the upper portion of the air outlet device 30 in the third direction is greater than the dimension of the lower portion of the air outlet device 30 in the third direction. In this way, the flow resistance inside the air outlet device 30 can be reduced, and a greater air volume can be achieved under the same conditions.

[0073] Specifically, in the second direction, the second side wall 32 has a first sub-side wall close to the smoke collection assembly 20 and a second sub-side wall away from the smoke collection assembly 20. The distance between the first sub-side wall and the third side wall 33 is greater than the distance between the second sub-side wall and the third side wall 33. Optionally, in the second direction, the third side wall 33 has a third sub-side wall close to the smoke collection assembly 20 and a fourth sub-side wall away from the smoke collection assembly 20. The distance between the third sub-side wall and the second side wall 32 is greater than the distance between the fourth sub-side wall and the third side wall 33.

[0074] In some embodiments, the edge of the air outlet 34 away from the side of the air inlet 231 in the third direction is at least partially closer to the front side in the first direction and closer to the rack 10 in the second direction than the edge of the air outlet 34 close to the side of the air inlet 231 in the third direction. In other words, the edge of the air outlet 34 on the outside is closer to the front side and closer to the top than the edge on the inside, thereby reducing the air flow of the air outlet 34 towards the air inlet 231. In this way, the air flow in the direction of the air inlet 231 can be at least blocked by the inner edge of the air outlet 34 which is closer to the back and lower. Optionally, the dimension of the side wall of the air outlet device 30 corresponding to the inner side of the air outlet 34 in the first direction or the second direction is greater than the side wall corresponding to the outer side of the air outlet 34.

[0075] In combination Figure 12 and Figures 14 to 18 In some embodiments, the edge of the air outlet 34 close to the front side in the first direction is provided with a flow guide structure 35 extending towards the back side in the first direction from the edge of the air outlet 34 close to the front side in the first direction. By providing the flow guide structure 35, the air flow of the portion of the air outlet 34 close to the front side can be blocked and guided, so that the air flow of the air outlet 34 is further directed towards the back side.

[0076] In some embodiments, the air outlet velocity of the air outlet 34 satisfies that, in the first direction, the air outlet velocity of the air outlet 34 gradually decreases and then gradually increases in the direction from the front side to the rear side. In other words, in the length direction of the air outlet 34, the air outlet velocity of the air outlet 34 is distributed as large on both sides and small in the middle. In this way, the air outlet velocity being large on both sides and small in the middle can form two vortexes on the sides of the smoke machine 1. For this embodiment, the air outlet device 30 is arranged at the front side, and the vortexes can attract the smoke at the front side to move towards the rear side, thereby improving the smoke suction effect of the smoke machine 1.

[0077] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the front side in the first direction. In this embodiment, the smoke needs to be attracted to move rearward, and if the air outlet direction of the air outlet device 30 arranged at the front side has a component towards the front side, the smoke will be blown towards the front side, resulting in dissipation towards the front side.

[0078] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the air inlet 231 in the third direction. The smoke needs to enter the smoke machine 1 from the air inlet 231 and then be discharged, and if the air outlet of the air outlet device 30 has a component towards the air inlet 231, the smoke suction effect at the air inlet 231 will be affected.

[0079] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the direction of the machine frame 10 in the second direction. In this embodiment, it is needed to form an air curtain on both sides of the smoke machine 1 to play a shielding role, and the air outlet component of the air outlet 34 towards the upper side will affect the formation of the air curtain, which is not conducive to improving the smoke suction effect.

[0080] In combination Figure 19 In some embodiments, the air outlet direction of the air outlet 34 at least has a component in the direction away from the machine frame 10 in the second direction, and the length of the air outlet 34 in the first direction is greater than the width of the air outlet 34 in the third direction. In other words, the air outlet 34 is arranged in a long strip shape and blows air downward. Through the downward component of the air outlet direction of the air outlet 34, an air curtain can be formed on both sides of the third direction below the smoke machine 1. The air curtain formed by the air outlet device 30 can shield both sides of the smoke machine 1, thereby reducing the air supplement from both sides to the middle air inlet 231 during the smoke exhaust process. In the case that the suction force of the smoke machine 1 is consistent, the air supplement on both sides of the third direction is reduced, and the air supplement on both sides of the first direction will increase. For the front side of the smoke machine 1, the increase of the air supplement on the front side can promote the smoke at the front side to move towards the rear side, so as to optimize the smoke suction effect of the smoke machine 1. Further, when the smoke machine 1 is installed on a wall surface, the wall surface at the rear side will also shield the air supplement at the rear side, so that the air supplement at the front side will further increase, thereby further promoting the rearward movement of the smoke at the front side.

[0081] In some embodiments, the length of the air outlet 34 in the first direction is greater than or equal to the length of the air inlet 231 in the first direction. In other words, the projection of the air inlet 231 in the third direction is located within the range defined by the two ends of the projection of the air outlet 34 in the third direction. In this way, the air curtain formed by the air outlet device 30 can shield a larger portion of the sides of the range hood 1, thereby further reducing the air supplement on the sides to promote the increase of the air supplement on the front side, so as to optimize the smoke suction effect.

[0082] Optionally, in the third direction, the distance between the edge of the air outlet 34 away from the air inlet 231 and the edge of the air outlet 34 close to the air inlet 231 is less than or equal to 4 mm. By setting the air inlet 231 to have a relatively narrow width, the air flow from the air outlet 34 can have a relatively high speed and a relatively strong directionality, thereby facilitating the formation of the air curtain.

[0083] In some embodiments, the air outlet speed of the air outlet 34 satisfies that, in the first direction, the air outlet speed of the air outlet 34 gradually decreases and then gradually increases in the direction from the front side to the rear side. In other words, in the length direction of the air outlet 34, the air outlet speed of the air outlet 34 is large on both sides and small in the middle. In this way, the relatively large air outlet speed on both sides and the relatively small air outlet speed in the middle can form two vortexes on the sides of the range hood 1. For this embodiment, the extension length of the air outlet device 30 is longer than the air inlet 231, and the vortexes can attract the smoke on the front side and the rear side to move towards the middle, thereby facilitating the exhaust of the smoke and improving the smoke suction effect of the range hood 1.

[0084] In some embodiments, the air outlet device 30 includes a first side wall 31 close to the rear side in the first direction, and the first side wall 31 close to the end of the machine frame 10 in the second direction is closer to the front side than the first side wall 31 away from the end of the machine frame 10 in the second direction. In other words, the first side wall 31 close to the rear side of the air outlet device 30 extends obliquely forward in the direction away from the machine frame 10 in the second direction. In this way, the flow close to the rear side of the air outlet 34 can be reduced, and the stability of the air outlet can be increased.

[0085] In some embodiments, the air outlet device 30 further comprises a second side wall 32 and a third side wall 33 arranged in the third direction, the first side wall 31, the second side wall 32 and the third side wall 33 form the air outlet 34, the distance between the second side wall 32 and the third side wall 33 of the part of the air outlet device 30 close to the rack 10 in the second direction is greater than the distance between the second side wall 32 and the third side wall 33 of the part of the air outlet device 30 away from the rack 10 in the second direction. In other words, the size of the upper part of the air outlet device 30 in the third direction is greater than the size of the lower part of the air outlet device 30 in the third direction. In this way, the flow resistance inside the air outlet device 30 can be reduced, and a greater air volume can be achieved under the same conditions.

[0086] In some embodiments, the air outlet direction of the air outlet 34 has a component in the third direction away from the air inlet 231. By arranging the air outlet direction of the air outlet 34 to be outward, the air outlet of the air outlet device 30 can be reduced to blow towards the air inlet 231, thereby reducing the influence of the air outlet of the air outlet device 30 on the air inlet at the air inlet 231. Further, the component of the air outlet direction of the air outlet 34 in the second direction away from the direction of the rack 10 is greater than the component of the air outlet direction of the air outlet 34 in the third direction away from the direction of the air inlet 231. In this way, the air outlet direction of the air outlet 34 is still mainly downward, so as to form a wind curtain to play a shielding role.

[0087] In some embodiments, at least part of the edge of the air outlet 34 away from the side of the air inlet 231 in the third direction is closer to the rack 10 in the second direction than the edge of the air outlet 34 close to the side of the air inlet 231 in the third direction. In other words, the edge of the air outlet 34 outward is closer to the upper side than the edge inward, thereby reducing the air outlet of the air outlet 34 towards the air inlet 231. Among them, at least the edge of the air outlet 34 closer to the upper side can shield the air outlet towards the air inlet 231 through the above-mentioned way. Optionally, the size of the side wall close to the inner side of the air outlet device 30 corresponding to the air outlet 34 in the second direction is greater than the size of the side wall close to the outer side of the air outlet device 30 corresponding to the air outlet 34 in the second direction.

[0088] In some embodiments, in the third direction, the distance between the edge of the air outlet 34 away from the side of the air inlet 231 and the edge of the air outlet 34 close to the side of the air inlet 231 satisfies that the distance of the part close to the front side is greater than the distance of the part close to the rear side. In other words, the width of the part close to the front side of the air outlet 34 is greater than the width of the part close to the rear side of the air outlet 34. This distance change can be gradual or in steps, which is not specifically limited here. In this way, the speed gradient of the air outlet speed of the air outlet 34 can be increased, so as to form a vortex with stronger suction, and further realize the rear movement of the front side flue gas.

[0089] In some embodiments, the air outlet direction of the air outlet 34 has no component in the first direction towards the front side. In this embodiment, the smoke needs to be drawn rearwardly, and if the air outlet direction of the air outlet device 30 arranged at the front side has a component towards the front side, the smoke will be blown towards the front side, resulting in dissipation towards the front side.

[0090] In some embodiments, the air outlet direction of the air outlet 34 has no component in the third direction towards the air inlet 231. The smoke needs to enter the range hood 1 from the air inlet 231 and then be discharged, and if the air outlet of the air outlet device 30 has a component towards the air inlet 231, it will affect the smoke suction effect at the air inlet 231.

[0091] In some embodiments, the air outlet direction of the air outlet 34 has no component in the second direction towards the direction of the machine frame 10. In this embodiment, it is needed to form an air curtain on both sides of the range hood 1 to play a shielding role, and no air outlet component of the air outlet 34 towards the upper side is needed to reduce the interference of air on the shielding effect of the air curtain.

[0092] In combination ​ In some embodiments, the air outlet direction of the air outlet 34 has a component in the second direction away from the direction of the machine frame 10 and a component in the third direction towards the direction of the air inlet 231, and the air outlet device 30 is arranged at a portion of the smoke collecting assembly 20 close to the rear side. In this embodiment, the air outlet direction of the air outlet 34 is towards the lower side and towards the inner side. In the case that the air outlet device 30 is arranged close to the rear side, the air outlet direction of the air outlet 34 is towards the inner side and towards the lower side, which can form an attached wall airflow at a position close to the wall surface, thereby attracting the smoke to move towards the direction of the wall surface, thereby playing a role of optimizing the smoke suction effect.

[0093] In some embodiments, the air outlet 34 includes a first air outlet 34 and a second air outlet 34, the first air outlet 34 is towards a direction away from the machine frame 10, and the second air outlet 34 is towards a direction close to the air inlet 231. The air outlet 34 is provided with two air outlets 34, and the two air outlets 34 are respectively towards the lower side and towards the inner side. Among them, the first air outlet 34 and the second air outlet 34 are communicated. In this way, a larger area of attached wall airflow can be formed at a position close to the wall surface, and the interference between the air blowing towards the inner side and the air blowing towards the lower side can be reduced.

[0094] In some embodiments, the air outlet direction of the air outlet 34 also has a component towards the rear side. In this way, the air outlet direction can be deviated from the front side of the air outlet device 30, thereby reducing the interference of the air outlet of the air outlet device 30 on the flow field structure of the front side of the air outlet device 30, and reducing the interference of the air outlet of the air outlet device 30 on the air inlet at the air inlet 231.

[0095] In some embodiments, in the third direction, the air outlet 34 is closer to the rack 10 at the end close to the air inlet 231 than at the end away from the air inlet 231. In other words, the air outlet 34 can be arranged at an angle with respect to both the second direction and the third direction, so that one air outlet 34 can simultaneously generate air flow towards the inside and downwards.

[0096] In some embodiments, the edge of the air outlet 34 close to the front side is farther away from the rack 10 in the second direction than the edge close to the back side. In other words, the edge of the air outlet 34 close to the front side is lower than the edge close to the back side, so as to reduce the air flow of the air outlet 34 towards the air inlet 231. In this way, the air flow towards the air inlet 231 can be blocked by the edge of the air outlet 34 closer to the front side. Optionally, the size of the side wall of the air outlet device 30 corresponding to the air outlet 34 close to the front side in the second direction is greater than the size of the side wall of the air outlet device 30 corresponding to the air outlet 34 close to the back side in the second direction.

[0097] In some embodiments, the air outlet direction of the air outlet 34 has no component towards the front side in the first direction. In this embodiment, the air outlet device 30 is arranged at the back side, and the component of the air outlet device 30 towards the front side will cause greater interference to the smoke suction at the air inlet 231 and the flow field structure below the range hood 1.

[0098] In some embodiments, the air outlet direction of the air outlet 34 has no component away from the air inlet 231 in the third direction. In this embodiment, it is necessary to form a wall-attached airflow to attract the smoke to move backward on the wall surface. The air outlet direction of the air outlet 34 is towards the outside, and the wall-attached airflow generated thereby is also located at the outside, which cannot effectively attract the smoke at the front side of the range hood 1. In some embodiments, the air outlet direction of the air outlet 34 has no component towards the rack 10 in the second direction.

[0099] In some embodiments, whether the air outlet devices 30 on both sides of the air inlet 231 operate can correspond to the user's cooking. For example, the range hood 1 identifies the side with more smoke or the side mainly used by the user through smoke stove linkage, temperature probe, image recognition, smoke sensing, etc., and makes the corresponding air outlet device 30 work. Alternatively, the user manually operates the air outlet device 30 through a mobile phone application or a control panel on the range hood 1.

[0100] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that, The range hood has a front side and an opposite rear side in a first direction, including: frame; A smoke collection assembly is mounted on the frame, the frame and the smoke collection assembly are arranged in a second direction, and the smoke collection assembly has an air inlet for drawing in smoke. An air outlet device is installed on the smoke collection assembly. The air outlet device has an air outlet in a third direction. The air outlet device is disposed on at least one side of the air inlet. The third direction is perpendicular to the first direction and the second direction. The air outlet has an air outlet direction that has at least a component toward the rear side.

2. The range hood according to claim 1, characterized in that: The smoke collection assembly includes a smoke extraction plate, a front plate, and a rear plate. In a first direction, the front plate is located in front of the smoke extraction plate, and the rear plate is located behind the smoke extraction plate. The smoke extraction plate is provided with the air inlet. The smoke extraction plate, the front plate, and the rear plate surround and form a smoke collection chamber facing away from the frame in a second direction. The air outlet is located on the side of the smoke extraction plate away from the frame and is located in the part of the smoke collection chamber near the front side.

3. The range hood according to claim 2, characterized in that: In the second direction, the distance between the end of the air outlet near the smoke collection assembly and the smoke extraction plate is less than or equal to 25 mm.

4. The range hood according to claim 2, characterized in that: In the second direction, the distance between the end of the air outlet away from the smoke collection assembly and the end face of the smoke collection assembly near the front and away from the frame is less than or equal to 15 mm.

5. The range hood according to claim 2, characterized in that: In the second direction, the end of the smoke plate near the front plate is located on the side away from the frame compared to the end of the smoke plate near the rear plate.

6. The range hood according to claim 2, characterized in that: The range hood also includes an oil cup, which is installed in the smoke collection chamber near the front panel, and the air outlet device is provided on at least one side of the oil cup in the third direction.

7. The range hood according to claim 6, characterized in that: The oil cup is detachably mounted on the front plate and is located on the side of the front plate near the rear plate. The oil cup is slidably disposed in a first direction for mounting or dismounting the oil cup.

8. The range hood according to claim 1, characterized in that: The air outlet has an air outlet direction that has a component in the third direction that is away from the air inlet direction.

9. The range hood according to claim 8, characterized in that: At least a portion of the edge of the air outlet on the side away from the air inlet in the third direction is closer to the front side than the edge of the air outlet on the side closer to the air inlet in the third direction.

10. The range hood according to claim 9, characterized in that: The air outlet has a first section near the smoke collection assembly and a second section away from the smoke collection assembly on the edge of the third-direction upward side away from the air inlet, the second section being closer to the front side than the first section.

11. The range hood according to claim 1, characterized in that: In the third direction, the distance between the edge of the air outlet away from the air inlet and the edge of the air outlet near the air inlet is less than or equal to 25mm.

12. The range hood according to any one of claims 1-11, characterized in that: The air outlet's airflow direction does not have a component pointing towards the front in the first direction. And / or, the air outlet's airflow direction does not have a component toward the air inlet in a third direction.

13. The range hood according to any one of claims 1-11, characterized in that: The distance between the side of the frame facing the front and the side of the front plate facing the front in the first direction is less than or equal to 15 mm.

14. The range hood according to any one of claims 1-11, characterized in that: On the third-party side, at least one air outlet device is provided on each side of the air inlet.

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