Range hood

Abstract

The invention discloses a range hood, and relates to the technical field of household appliances, the range hood comprises: a smoke collecting hood having a smoke collecting cavity, an upper smoke inlet communicated with the smoke collecting cavity, and a lower smoke inlet communicated with the smoke collecting cavity, the lower smoke inlet is located below the upper smoke inlet, and the lower smoke inlet comprises a left side smoke inlet and a right side smoke inlet; the upper smoke inlet panel movably opens and closes the upper smoke inlet, and the upper smoke inlet panel moves towards the interior of the smoke collecting cavity so as to open the upper smoke inlet; the left side smoke inlet and the right side smoke inlet are both provided with the opening and closing mechanisms, so that the left side smoke inlet and the right side smoke inlet can be movably opened and closed. According to the technical scheme, the range hood can conveniently meet different oil smoke suction requirements of different cooking scenes.

Description

TECHNICAL FIELD

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

[0002] The range hood has become one of the indispensable kitchen household appliances in modern families. The range hood is installed in the kitchen and located above the stove, which can quickly remove the waste of the stove combustion and the oil fume generated in the cooking process which is harmful to human body, and discharge it to the outdoor to reduce pollution. Different cooking scenes have different oil fume suction needs, and the range hood in the related art is difficult to meet the different oil fume suction needs of different cooking scenes. For example, when cooking with a steamer, the oil fume position of the steamer is relatively high, and even higher than the inlet of the near-suction type range hood, which is easy to cause the high-position oil fume to overflow; for example, on a double burner stove, when the left burner is used for clear stewing by a soup pot and the right burner is used for stir-frying by a frying pan, the oil fume on the stir-frying side is much more than that on the clear stewing side, which is easy to cause the oil fume on the stir-frying side to overflow. SUMMARY

[0003] The main purpose of the present application is to provide a range hood, which aims to facilitate the range hood to meet the different oil fume suction needs of different cooking scenes.

[0004] To achieve the above-mentioned purpose, the range hood provided by the present application comprises: A smoke collecting hood having a smoke collecting cavity, an upper smoke inlet communicating with the smoke collecting cavity, and a lower smoke inlet communicating with the smoke collecting cavity, the lower smoke inlet being located below the upper smoke inlet, the lower smoke inlet comprising a left side smoke inlet and a right side smoke inlet; An upper smoke inlet panel which opens and closes the upper smoke inlet, and the upper smoke inlet panel moves towards the smoke collecting cavity to open the upper smoke inlet; and An opening and closing mechanism, the left side smoke inlet and the right side smoke inlet are each provided with the opening and closing mechanism, so that the left side smoke inlet and the right side smoke inlet can be opened and closed.

[0005] Optionally, when the upper smoke inlet panel opens the upper smoke inlet, the upper edge and the lower edge of the upper smoke inlet panel have a gap between the upper smoke inlet.

[0006] Optionally, the range hood further comprises a rotating arm, the upper smoke inlet panel is fixedly connected to the upper end of the rotating arm, the lower end of the rotating arm is rotatably connected to the smoke collecting hood, and the rotating connection point of the rotating arm is located below the upper smoke inlet.

[0007] Optionally, when the upper smoke inlet panel opens the upper smoke inlet, the upper smoke inlet panel is inclined from bottom to top towards the direction away from the upper smoke inlet.

[0008] Optionally, the range hood further comprises a first driving device arranged in the smoke collecting cover, the first driving device comprising a power member and a transmission mechanism, the power member driving the upper smoke inlet panel to open and close through the transmission mechanism.

[0009] Optionally, the transmission mechanism is configured as a linkage mechanism.

[0010] Optionally, the lower smoke inlet is provided with a smoke inlet groove recessed towards the smoke collecting cavity, the smoke inlet groove being provided with a smoke passing opening communicating with the smoke collecting cavity, the smoke passing opening comprising the left side smoke inlet and the right side smoke inlet arranged along the left-right direction.

[0011] Optionally, the smoke passing opening is arranged on the upper groove wall of the smoke inlet groove, and the opening and closing mechanism is arranged on the upper side of the smoke passing opening.

[0012] Optionally, the smoke collecting cover is provided below with an oil cup, the lower groove wall of the smoke inlet groove is arranged obliquely, and the upper side of the lower groove wall is close to the back plate of the smoke collecting cover, and the lower side of the lower groove wall extends into the opening of the oil cup.

[0013] Optionally, the upper side of the lower groove wall is provided with a bent flange, the side of the bent flange away from the lower groove wall being connected to the back plate, and the bent flange and the back plate jointly form an oil guide groove, the oil guide groove communicating with the oil cup.

[0014] Optionally, the opening and closing mechanism is configured as a louver mechanism, the louver mechanism comprising a second driving device and a plurality of blades, the second driving device being capable of driving the plurality of blades to swing to open and close the left side smoke inlet and / or the right side smoke inlet.

[0015] Optionally, the range hood further comprises a detection device, the detection device being communicatively connected with a processor of the range hood, so that the range hood can determine the amount of smoke and / or the smoke outlet position in a cooking environment based on detection data obtained by the detection device, and then control the opening and closing state of the upper smoke inlet of the smoke collecting cover and / or the left side smoke inlet and / or the right side smoke inlet according to the amount of smoke and / or the smoke outlet position.

[0016] The smoke hood in the technical solution of the present application is provided with an upper smoke inlet and a lower smoke inlet, wherein the lower smoke inlet comprises left and right side smoke inlets arranged side by side, and the opening and closing states of the upper smoke inlet, the left side smoke inlet and the right side smoke inlet are all controllable. In this way, the range hood can meet different oil fume suction requirements in different cooking scenarios, such as but not limited to: when the cooking fume amount is small, only the lower smoke inlet is controlled to be opened to meet the oil fume suction requirement; when the cooking fume amount is large, the lower smoke inlet and the upper smoke inlet are controlled to be opened at the same time, that is, the lower smoke inlet cannot fully meet the oil fume suction requirement, and part of the oil fume will escape upward, so the upper smoke inlet needs to be opened to assist in oil fume suction; when the smoke outlet position is higher than the position of the lower smoke inlet (for a light and thin type side suction range hood, when multi-layer steamers are used for cooking, this situation will occur because the multi-layer steamers are high), because the oil fume will go upward under the action of the hot plume, the smoke exhaust efficiency of the lower smoke inlet is low, and at this time, the upper smoke outlet can be opened alone for smoke exhaust; for a cooking scenario in which a multi-layer steamer is used for cooking on the left burner and a frying pan is used for frying on the right burner, there is a situation in which the smoke outlet position is high and the fume amount is large, so the upper smoke inlet and the lower smoke inlet need to be opened at the same time for smoke exhaust by means of upper and lower flow distribution; in the case of using a stew pot for stewing on the left burner and a frying pan for frying on the right burner, the fume amount generated on the left side is smaller than that generated on the right side, so the left side smoke inlet and the right side smoke inlet are controlled to be opened, and the opening degree of the right side smoke inlet is controlled to be greater than that of the left side smoke inlet to increase the right side smoke inlet amount and reduce the left side smoke inlet amount; in the case of using a soup pot for boiling soup only on the right burner, no fume is generated on the left side, and a small amount of fume is generated on the right side, so the left side smoke inlet can be controlled to be closed, and only the right side smoke inlet is controlled to be opened. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the drawings shown.

[0018] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the range hood of the present application; Figure 2 Fig. 1 is a perspective view of a cooking fume extractor according to the present application; Figure 1 Fig. 2 is a side view of the cooking fume extractor, wherein the hood portion is a cross-sectional view and the isolation hood is hidden; Figure 3 Fig. 3 is a perspective view of the hood of the cooking fume extractor; Figure 2 Fig. 4 is a structural schematic view of the hood from another perspective; Figure 4 Fig. 5 is a structural schematic view of the hood from another perspective, wherein the back plate of the hood is hidden; Figure 1 Fig. 6 is a structural schematic view of the hood from another perspective, wherein the back plate of the hood is hidden; Figure 5 Figure 4 Fig. 7 is an enlarged view of A in Fig. 4; Figure 6 Fig. 8 is an enlarged view of B in Fig. 4; Figure 1 Fig. 9 is an exploded structural schematic view of the cooking fume extractor; Figure 7 Figure 1 Fig. 10 is a structural schematic view of the opening and closing mechanism of the cooking fume extractor from one perspective; Figure 8 Fig. 11 is a structural schematic view of the opening and closing mechanism of the cooking fume extractor from another perspective, wherein one side wall of the mounting frame is hidden; Figure 1 Fig. 12 is an enlarged view of C in Fig. 10; Figure 9 Figure 8 Fig. 13 is an enlarged view of D in Fig. 10; Figure 10 Fig. 14 is a partial cross-sectional structural schematic view of the lower end of the cooking fume extractor; Figure 1 Fig. 15 is a schematic view of the cooking fume path of the cooking fume extractor in one cooking scenario; Figure 11 Figure 1 Fig. 16 is a schematic view of the cooking fume path of the cooking fume extractor in another cooking scenario; Figure 12 Fig. 17 is a schematic view of the cooking fume path of the cooking fume extractor in yet another cooking scenario; Figure 1 Fig. 18 is a schematic view of the cooking fume path of the cooking fume extractor in still another cooking scenario; Figure 13 Figure 1 Fig. 19 is a schematic view of the cooking fume path of the cooking fume extractor in yet another cooking scenario. Figure 14 Fig. 20 is a schematic view of the cooking fume path of the cooking fume extractor in still another cooking scenario. Figure 1 Fig. 21 is a schematic view of the cooking fume path of the cooking fume extractor in yet another cooking scenario. Figure 15 Figure 1 Fig. 22 is a schematic view of the cooking fume path of the cooking fume extractor in still another cooking scenario.

[0019] BRIEF DESCRIPTION OF THE DRAWINGS ​​​​​​1, smoke hood; 101, smoke cavity; 102, lower smoke inlet; 102a, left smoke inlet; 102b, right smoke inlet; 103, smoke passage; 104, upper smoke inlet panel; 105, upper smoke inlet; 11, smoke inlet groove; 111, upper groove wall; 112, lower groove wall; 113, bent flange; 114, condensation plate; 115, oil guide groove; 12, opening and closing mechanism; 122, blade; 122a, clamping protrusion; 123, second driving device; 124, transmission connecting rod; 125, mounting position; 126, second driving motor; 127, first gear; 128, second gear; 129, partition rib; 131, front panel; 132, back plate; 14, mounting frame; 141, mounting groove; 15, oil cup; 161, rotating arm; 162, adapter plate; 162a, first plate part; 162b, second plate part; 17, first driving device; 171, power member; 171a, first driving motor; 171b, speed reducer; 172, transmission mechanism; 172a, first connecting rod; 172b, second connecting rod; 172c, clamping hook; 18, limiting mechanism; 181, first limiting part; 182, second limiting part; 19, isolation cover The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. 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.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0023] The present application provides an extractor hood.

[0024] Referring to Figures 1 to 3 In an embodiment of the present application, the extractor hood comprises: The hood 1 has a smoke collecting cavity 101, an upper smoke inlet 105 communicating with the smoke collecting cavity 101, and a lower smoke inlet 102 communicating with the smoke collecting cavity 101, the lower smoke inlet 102 is located below the upper smoke inlet 105, and the lower smoke inlet 102 comprises a left side smoke inlet 102a and a right side smoke inlet 102b; The upper smoke panel 104 is used to open and close the upper smoke inlet 105; and The opening and closing mechanism 12 is provided on the left side smoke inlet 102a and the right side smoke inlet 102b, so that the left side smoke inlet 102a and the right side smoke inlet 102b can be opened and closed.

[0025] In the embodiment, the extractor hood is usually a side suction type extractor hood, and the hood 1 of the side suction type extractor hood usually comprises a back plate 132 and a front panel 131 opposite to the back plate 132, and the front panel 131 is inclined. The side suction type extractor hood usually comprises a light and thin type side suction type extractor hood and a traditional type side suction type extractor hood.

[0026] For the traditional type side suction type extractor hood, the whole hood 1 is triangularly arranged in the side view, and the lower smoke inlet 102 and the upper smoke inlet 105 are arranged on the front panel 131.

[0027] For the light and thin type side suction type extractor hood, the upper end of the front panel 131 is inclined to extend to the middle or middle rear part of the top plate of the hood 1, and the whole hood 1 is arranged in the shape of "7" in the side view (see Figure 2), so that the fume hood 1 can be further close to the smoke source, the smoke suction path is shortened, and the smoke locking efficiency is improved during explosive frying. For a light and thin side suction type range hood, the lower smoke inlet 102 and the upper smoke inlet 105 are also arranged on the front panel 131. Optionally, the included angle between the front panel 131 and the back panel 132 is 10° to 30°, so that the front panel 131 is relatively inclined to the vertical direction to reduce the occupation of the fume hood 1 to the user's operation space.

[0028] The fume hood 1 in the technical scheme of the present application is provided with an upper smoke inlet 105 and a lower smoke inlet 102, wherein the lower smoke inlet 102 includes left and right arranged left and right smoke inlets 102a and 102b, and the opening and closing states of the upper smoke inlet 105, the left smoke inlet 102a and the right smoke inlet 102b are controllable, so that the range hood can meet different smoke suction requirements of different cooking scenes, for example but not limited to: when the cooking smoke amount is small, only the lower smoke inlet 102 is controlled to be opened to meet the smoke suction requirement, and when the cooking smoke amount is large, the lower smoke inlet 102 and the upper smoke inlet 105 are controlled to be opened at the same time, that is, the lower smoke inlet 102 cannot completely meet the smoke suction requirement, and part of the cooking fume will escape upward, so the upper smoke inlet 105 needs to be opened to assist in smoke suction; when the smoke outlet position is higher than the position of the lower smoke inlet 102 (for a light and thin side suction type range hood, when multi-layer steamers are used for cooking, this situation will occur due to the high height of the multi-layer steamers), since the cooking fume is upward under the action of the hot plume, the smoke exhaust efficiency of the lower smoke inlet 102 is low, and at this time the upper smoke outlet can be opened alone for smoke exhaust; for the cooking scene of using multi-layer steamers on the left stove and using woks on the right stove, there are both high smoke outlet positions and large smoke amounts, so the upper smoke inlet 105 and the lower smoke inlet 102 need to be opened at the same time, and the smoke is discharged through upper and lower distribution; in the case of using a stew pot for stewing on the left stove and a wok for frying on the right stove, the smoke amount generated on the left side is smaller than that on the right side, so the left and right smoke inlets 102a and 102b are controlled to be opened, and the opening degree of the right smoke inlet 102b is greater than that of the left smoke inlet 102a to increase the right smoke suction and reduce the left smoke suction; in the case of using a soup pot for boiling soup only on the right stove, no smoke is generated on the left side, and a small amount of smoke is generated on the right side, so the left smoke inlet 102a can be controlled to be closed, and only the right smoke inlet 102b is controlled to be opened.

[0029] In an embodiment, the upper smoke inlet panel 104 moves towards the smoke collecting cavity 101 to open the upper smoke inlet 105. In this embodiment, the upper smoke inlet panel 104 can be rotated inwards to open the upper smoke inlet 105, or can be translated inwards to open the upper smoke inlet 105, etc., as long as the upper smoke inlet panel 104 moves towards the smoke collecting cavity 101 during the process of opening the upper smoke inlet 105.

[0030] In this embodiment, the upper smoke inlet panel 104 moves towards the smoke collecting cavity 101 during the process of switching from the closed state to the open state, so that the upper smoke inlet panel 104 is located in the smoke collecting cavity 101 in the open state. In this way, the oil stains formed on the upper smoke inlet panel 104 will only drip into the smoke collecting cavity 101 even if they appear to drip downwards, thereby avoiding the oil stains on the upper smoke inlet panel 104 from dripping onto the cooking table or cooking utensils, to improve the user's experience.

[0031] Further, referring to Figure 3 When the upper smoke inlet panel 104 opens the upper smoke inlet 105, the upper edge and the lower edge of the upper smoke inlet panel 104 are spaced apart from the upper smoke inlet 105. In this way, compared with the technical solution in which the lower edge of the upper smoke inlet panel 104 is rotationally connected to the lower edge of the upper smoke inlet 105, the technical solution of this embodiment can better avoid oil stains flowing from the lower edge of the upper smoke inlet 105 to the outside of the upper smoke inlet 105 through the lower edge of the upper smoke inlet panel 104.

[0032] Further, when the upper smoke inlet panel 104 opens the upper smoke inlet 105, the upper smoke inlet panel 104 is inclined from bottom to top away from the upper smoke inlet 105. In this way, the upper smoke inlet panel 104 can guide the oil fume upwards, i.e., the oil fume will be guided by the upper smoke inlet panel 104 towards the exhaust fan of the range hood, thereby facilitating the discharge efficiency of the oil fume. It is worth mentioning that under the suction of the exhaust fan, the oil fume has a tendency to flow obliquely upwards from the upper smoke inlet 105. In this embodiment, the upper smoke inlet panel 104 in the open state is also inclined upwards, which is the same as the flow tendency of the oil fume. That is, the upper smoke inlet panel 104 in the open state can guide the oil fume along the flow tendency of the oil fume, thereby better guiding the oil fume, and making the discharge of the oil fume more smooth.

[0033] Further, the upper smoke inlet panel 104 is rotationally connected to the smoke collecting hood 1, so as to realize inward rotation opening of the upper smoke inlet panel 104 relative to the upper smoke inlet 105, so that the upper smoke inlet panel 104 is arranged in an inclined manner in the opened state, to reuse as a flow guide plate for guiding the oil fume to the exhaust fan. However, the design is not limited thereto, and in other embodiments, the upper smoke inlet panel 104 can also be slidingly connected to the inner side of the front panel 131 of the smoke collecting hood 1, so as to realize sliding translation of the upper smoke inlet panel 104 to the upper side or lower side of the upper smoke inlet 105, so as to open the upper smoke inlet 105; or, the upper smoke inlet panel 104 can also be inwardly translated relative to the axis of the upper smoke inlet 105 to open.

[0034] For the rotationally opened upper smoke inlet panel 104, optionally, with reference to Figure 3 , the extractor hood further comprises a rotating arm 161, the upper smoke inlet panel 104 is fixedly connected to the upper end of the rotating arm 161, the lower end of the rotating arm 161 is rotationally connected to the smoke collecting hood 1, and the rotation connection point of the rotating arm 161 is located below the upper smoke inlet 105, so that the upper edge and the lower edge of the upper smoke inlet panel 104 are both spaced from the upper smoke inlet 105 in the opened state. In this embodiment, the rotating arm 161 is provided with two, respectively arranged at opposite ends of the upper smoke inlet panel 104, so as to improve the stability of the opening and closing movement of the upper smoke inlet panel 104; of course, in other embodiments, the rotating arm 161 can also be provided with only one, which can also realize the rotation opening of the upper smoke inlet panel 104; in addition, in some other embodiments, when the length of the upper smoke inlet panel 104 is very large, in order to avoid sagging of the middle part of the upper smoke inlet panel 104, a plurality of rotating arms 161 can be added at the middle position of the upper smoke inlet panel 104, or a plurality of upper smoke inlet panels 104 can be sequentially arranged from left to right on the upper smoke inlet 105.

[0035] Optionally, the range hood further comprises an adapter plate 162, the adapter plate 162 comprises a first plate portion 162a and a second plate portion 162b connected by bending, the first plate portion 162a is fixedly connected with the back side of the upper smoke inlet panel 104, and the second plate portion 162b is fixedly connected with the upper end of the rotating arm 161. In the embodiment, the first plate portion 162a and the upper smoke inlet panel 104 are connected in a plate-to-plate adhering manner, the connection area of this connection manner is larger, the connection stability is higher, so as to reduce the probability of shaking of the upper smoke inlet panel 104 during rotation. In the embodiment, the first plate portion 162a and the upper smoke inlet panel 104 are connected by bonding or welding, so as to guarantee the integrity of the upper smoke inlet panel 104, so as to guarantee the good appearance of the upper smoke inlet panel 104; of course, this does not exclude that the first plate portion 162a and the upper smoke inlet panel 104 can be connected by screw locking or riveting. Optionally, the rotating arm 161 is provided in a plate shape, so that the second plate portion 162b and the rotating arm 161 are also connected in a plate-to-plate adhering manner, and also have higher connection stability. In the embodiment, the second plate portion 162b and the rotating arm 161 can be connected by screw locking or riveting, so as to facilitate disassembly and maintenance; of course, this does not exclude that the second plate portion 162b and the rotating arm 161 can be connected by bonding or welding.

[0036] Further, with reference to Figure 2, the range hood further comprises a first driving device 17 arranged in the smoke collecting cover 1, the first driving device 17 comprises a power member 171 and a transmission mechanism 172, the power member 171 drives the upper smoke inlet panel 104 to open and close through the transmission mechanism 172. In the embodiment, the power member 171 indirectly drives the upper smoke inlet panel 104 through the transmission mechanism 172, which is conducive to the reasonable selection of the installation position 125 of the power member 171. For the technical solution provided with the rotating arm 161, the power member 171 is connected with the rotating arm 161 through the transmission mechanism 172. However, the design is not limited to this, and in other embodiments, the first driving device 17 can also be directly connected with the rotating connection point of the rotating arm 161 without the transmission mechanism 172. Without loss of generality, in the embodiment, the connection position of the transmission mechanism 172 and the rotating arm 161 is usually arranged close to the upper end of the rotating arm 161, that is, arranged separately from the rotating connection point of the rotating arm 161, so as to facilitate the rotation of the rotating arm 161. Optionally, the power member 171 comprises a first driving motor 171a and a speed reducer 171b connected with each other, an output shaft of the speed reducer 171b is connected with the rotating arm 161 through the transmission mechanism 172, and the arrangement of the speed reducer 171b can increase the driving torque of the power member 171.

[0037] Optionally, referring to Figure 4 and Figure 5 together, in the embodiment, the transmission mechanism 172 is configured as a connecting rod mechanism, and the length of the connecting rod is large, which is more conducive to the reasonable selection of the installation position 125 of the power member 171. However, the design is not limited to this, and in other embodiments, the transmission mechanism 172 can also be configured as a gear mechanism and the like.

[0038] Further optionally, the connecting rod mechanism comprises a first connecting rod 172a and a second connecting rod 172b rotatably connected with each other, one end of the first connecting rod 172a away from the second connecting rod 172b is rotatably connected with the power member 171, and the other end of the second connecting rod 172b away from the first connecting rod 172a is used to drive the upper smoke inlet panel 104 to open and close. It can be understood that the connecting rod mechanism of the embodiment is a multi-connecting rod structure, and the multi-connecting rod is conducive to increasing the length, thereby being more conducive to the reasonable selection of the installation position 125 of the power member 171. For the technical solution provided with the rotating arm 161, the other end of the second connecting rod 172b away from the first connecting rod 172a is rotatably connected with the rotating arm 161.

[0039] Further, a limiting mechanism 18 is arranged between the transmission mechanism 172 and the smoke collecting hood 1 to limit the active limit position of the upper smoke inlet panel 104, so as to avoid the upper smoke inlet panel 104 from continuously rotating outward in the closed state, and a gap appears between the upper smoke inlet panel 104 and the upper smoke inlet 105, which not only affects the appearance of the product, but also provides an opportunity for insects and the like to enter the smoke collecting cavity 101, and / or avoid the upper smoke inlet panel 104 from excessively rotating inward relative to the upper smoke inlet 105, which causes difficulty in resetting the upper smoke inlet panel 104 to the closed state.

[0040] In an embodiment, the limiting mechanism 18 includes a first limiting portion 181 arranged on the smoke collecting hood 1, and in the closed state, the transmission mechanism 172 is limitedly matched with the first limiting portion 181, so as to limit the outward rotation of the upper smoke inlet panel 104 relative to the upper smoke inlet 105, thereby avoiding the upper smoke inlet panel 104 from continuously rotating outward in the closed state, and a gap appears between the upper smoke inlet panel 104 and the upper smoke inlet 105. For the scheme provided with the first connecting rod 172a and the second connecting rod 172b, optionally, the first limiting portion 181 is configured as a first limiting protrusion arranged on the side cavity wall of the smoke collecting cavity 101, and the end of the first connecting rod 172a away from the second connecting rod 172b is provided with a hook 172c, and in the closed state, the hook 172c is limitedly overlapped with the first limiting protrusion, so as to limit the outward rotation of the upper smoke inlet panel 104 relative to the upper smoke inlet 105. Further optionally, the first limiting protrusion includes a mounting plate and a first limiting plate connected by bending, the mounting plate is fixedly arranged on the side cavity wall of the smoke collecting cavity 101, and in the closed state, the hook 172c is limitedly overlapped with the first limiting plate.

[0041] In another embodiment, the limiting mechanism 18 includes a second limiting portion 182 arranged on the smoke collecting hood 1, and when the transmission mechanism 172 is limitedly matched with the second limiting portion 182, the inward rotation of the upper smoke inlet panel 104 relative to the upper smoke inlet 105 is limited, thereby avoiding the upper smoke inlet panel 104 from excessively rotating inward relative to the upper smoke inlet 105, which causes difficulty in resetting the upper smoke inlet panel 104 to the closed state. For the scheme provided with the first connecting rod 172a and the second connecting rod 172b, optionally, the second limiting portion 182 is configured as a second limiting protrusion protruding in the interior of the smoke collecting cavity 101, and when the first connecting rod 172a is limitedly matched with the second limiting protrusion, the inward rotation of the upper smoke inlet panel 104 relative to the upper smoke inlet 105 is limited.

[0042] In yet another embodiment, the limiting structure can also simultaneously include the first limiting portion 181 and the second limiting portion 182, so as to avoid the upper smoke inlet panel 104 continuing to rotate outward in the closed state and a gap appearing between the upper smoke inlet panel 104 and the upper smoke inlet 105, and also avoid the upper smoke inlet panel 104 excessively rotating inward relative to the upper smoke inlet 105 and causing difficulty in resetting the upper smoke inlet panel 104 to the closed state.

[0043] In an embodiment, the smoke collecting cover 1 is provided with a separation cover 19, and the power member 171 is installed in the separation cover 19. In this embodiment, the addition of the separation cover 19 can reduce the probability of the power member 171 being polluted by oil fume, thereby prolonging the service life of the power member 171. It can be understood that the connecting structure of the power member 171 and the transmission mechanism 172 is movably arranged in the separation cover 19; without loss of generality, the output shaft of the power member 171 is movably arranged in the separation cover 19 to be fixedly connected with the transmission mechanism 172; for the technical solution provided with the first connecting rod 172a and the second connecting rod 172b, the output shaft of the power member 171 is movably arranged out of the separation cover 19 to be fixedly connected with the end of the first connecting rod 172a away from the second connecting rod 172b, so as to drive the first connecting rod 172a to rotate. Alternatively, the first limiting protrusion is configured as a bent limiting plate on the separation cover 19.

[0044] In an embodiment, referring to Figure 1 , Figure 3 and Figure 10 , the lower smoke inlet 102 is provided with a smoke inlet groove 11 recessed into the smoke collecting cavity 101, the smoke inlet groove 11 is provided with a smoke passing opening 103 in communication with the smoke collecting cavity 101, and the smoke passing opening 103 includes the left side smoke inlet 102a and the right side smoke inlet 102b arranged along the left-right direction.

[0045] In this embodiment, when external oil fume passes through the opening and closing mechanism 12, oil stains may be left on the opening and closing mechanism 12 and may accumulate into oil drops to drop down. However, since the opening and closing mechanism 12 in this solution is arranged in the smoke passing opening 103, and the smoke passing opening 103 is arranged in the smoke inlet groove 11 recessed into the smoke collecting cavity 101, the oil drops at the opening and closing mechanism 12 will only drop into the smoke inlet groove 11 or the smoke collecting cavity 101, and will not drop onto the cooking bench or the cooking appliance, thereby improving the user experience.

[0046] Further, the smoke passing opening 103 is arranged on the upper groove wall 111 of the smoke inlet groove 11, and the opening and closing mechanism 12 is arranged on the upper side of the smoke passing opening 103, that is, the opening and closing mechanism 12 is arranged on the top side of the smoke inlet groove 11, so that the user cannot basically see the opening and closing mechanism 12 even through the lower smoke inlet opening 102, thereby hiding the opening and closing mechanism 12, and the oil stains on the opening and closing mechanism 12 cannot be exposed in the user's sight, which is beneficial to further improve the user experience. Optionally, the upper groove wall 111 can be formed by bending part of the front panel 131, thereby facilitating the processing of the smoke inlet groove 11.

[0047] Further, the oil cup 15 is arranged below the smoke collecting cover 1, the lower groove wall 112 of the smoke inlet groove 11 is arranged obliquely, the upper side of the lower groove wall 112 is close to the back plate 132 of the smoke collecting cover 1, and the lower side of the lower groove wall 112 extends into the opening of the oil cup 15. In the embodiment, the lower groove wall 112 extends obliquely downward from the back plate 132 of the smoke collecting cover 1 to the opening of the oil cup 15, thereby further guiding the oil droplets dropped by the opening and closing mechanism 12 to ensure that they flow smoothly into the oil cup 15. Optionally, the lower groove wall 112 is provided with a condensing plate 114 on the side facing the smoke inlet groove 11. The condensing plate 114 can preliminarily cool and condense the oil fume. When the high-temperature oil fume meets the condensing plate 114 with relatively low temperature, the oil mist particles in the oil fume will be liquefied due to cooling and condense on the plate surface. These condensed oil droplets will flow into the oil cup 15 along the plate surface, thereby realizing the separation of oil and smoke gas and reducing the burden of the exhaust fan.

[0048] Further, the lower groove wall 112 is provided with a bent flange 113 on the upper side, the bent flange 113 is connected to the back plate 132 away from one side of the lower groove wall 112, and the bent flange 113 and the back plate 132 jointly enclose an oil guide groove 115, and the oil guide groove 115 communicates with the oil cup 15. If the lower groove wall 112 is directly connected to the back plate 132 of the smoke collecting hood 1, and the oil guide groove 115 is not formed, the oil flowing down along the back plate 132 will also flow down along the lower groove wall 112 to the oil cup 15, which may cause excessive oil dirt on the lower groove wall 112, which is easy to dirty, and is not conducive to maintaining the cleanliness of the appearance, causing unnecessary cleaning burden. Therefore, the lower groove wall 112 is provided with the bent flange 113, which helps to fix the lower groove wall 112 and the back plate 132, and the bent flange 113 and the back plate 132 form the oil guide groove 115, so that the oil flowing down from the back plate 132 flows directly to the oil cup 15 through the oil guide groove 115, which helps to share the oil guiding pressure of the lower groove wall 112 and reduces the cleaning burden of the user. In order to facilitate the communication between the oil guide groove 115 and the oil cup 15, a through hole can be provided on the bent flange 113, and the oil guide groove 115 communicates with the oil cup 15 through the through hole. The length of the bent flange 113 in the left-right direction is slightly smaller than the length of the lower groove wall 112 in the left-right direction, so that the oil guide groove 115 is formed at both ends in the left-right direction, so as to realize the communication between the oil guide groove 115 and the oil cup 15.

[0049] Further, referring to Figures 6 to 9 , the opening and closing mechanism 12 is configured as a louver mechanism, the louver mechanism includes a second driving device 123 and a plurality of blades 122, the second driving device 123 can drive the plurality of blades 122 to swing to open and close the left side smoke inlet 102a and / or the right side smoke inlet 102b. In this embodiment, two louver mechanisms can move independently, and the second driving device 123 is drivingly connected to one side of the blade 122, so that the plurality of blades 122 rotate synchronously with the same side as the axis to control the opening and closing of the left side smoke inlet 102a and the right side smoke inlet 102b, respectively, or even to control the smoke flow of the left side smoke inlet 102a and the right side smoke inlet 102b, respectively, so as to further enrich the use scene of the range hood.

[0050] Further, the second driving device 123 is drivingly connected to the upper side of the blade 122, and the second driving device 123 can drive the plurality of blades 122 to flip downward with the upper side as the axis to open the corresponding smoke inlet, that is, when the louver mechanism is opened, the blades 122 are flipped downward as a whole, that is, the louver mechanism is opened in the form of outward opening, so as to facilitate cleaning of the blades 122.

[0051] Further, when the lower smoke inlet 102 is opened, the upper sides of the blades 122 of the two shutter mechanisms are close to each other, and the lower sides of the blades 122 of the two shutter mechanisms are away from each other, that is, when both of the two shutter mechanisms are opened, the blades 122 of the two shutter mechanisms are symmetrical, and jointly form a moustache shape (see Figure 13 ), so that when the left smoke inlet 102a and the right smoke inlet 102b are controlled to be opened at the same time, the blades 122 of the two shutter mechanisms can jointly form a smoke gathering effect at the smoke inlet groove 11, so as to further reduce the possibility of oil fume escaping and improve the oil fume suction effect of the range hood.

[0052] In order to realize the synchronous rotation of the plurality of blades 122, in an embodiment, referring to Figures 6 to 9 , the shutter mechanism further comprises a transmission connecting rod 124, the transmission connecting rod 124 is provided with a plurality of mounting positions 125, a blade 122 is mounted on a mounting position 125, and the transmission connecting rod 124 moves along the left-right direction of the range hood to drive the plurality of blades 122 to swing. Optionally, the mounting position 125 is configured as a mounting hole provided on the transmission connecting rod 124, one side of the blade 122 is provided with a clamping protrusion 122a, the clamping protrusion 122a penetrates through the mounting hole and is clamped to the periphery of the mounting hole, so as to facilitate the quick mounting of the transmission connecting rod 124 and the plurality of blades 122.

[0053] Further, the second driving device 123 comprises a second driving motor 126, a first gear 127 and a second gear 128, the first gear 127 is rotationally connected to the output end of the second driving motor 126, the second gear 128 is transmissionally connected to one of the plurality of blades 122, and the first gear 127 and the second gear 128 are in meshing transmission; the second driving motor 126 drives the first gear 127 to rotate, so as to drive the second gear 128 to drive one of the plurality of blades 122 to swing, and then make the transmission connecting rod 124 move along the left-right direction of the range hood, and then realize the synchronous rotation of the plurality of blades 122.

[0054] In order to facilitate the arrangement of the second driving device 123, in an embodiment, referring to Figure 1 , Figures 6 to 9The through smoke port 103 is provided with a partition rib 129 to separate the left smoke inlet port 102a and the right smoke inlet port 102b, and at least part of the second driving device 123 is arranged on the partition rib 129. Specifically, the partition rib 129 can separate the through smoke port 103, and the partition rib 129 can also be used for mounting the second driving device 123; in addition, the second driving device 123 is arranged at least partially on the side of the partition rib 129 away from the smoke inlet groove 11, so as to further reduce the attachment of oil fume and improve the service life. Optionally, the through smoke port 103 is provided with two installation frames 14 arranged along the left-right direction of the extractor hood, one installation frame 14 is provided with a louver mechanism, a plurality of blades 122 are rotatably arranged on opposite sides of the installation frame 14, and the two ends of the two installation frames 14 close to each other form the partition rib 129, and the two ends of the two installation frames 14 close to each other are provided with mounting grooves 141, the second driving motor 126 is arranged in the mounting groove 141, the first gear 127 is rotatably arranged on the groove wall of the mounting groove 141, and the second gear 128 is also rotatably arranged on the installation frame 14 and rotatably connected to the blade 122 on the side close to the second driving motor 126, so as to facilitate the installation of the louver mechanism and ensure the compactness of the second driving device 123.

[0055] Further, the extractor hood further comprises a detection device (not shown), which is in communication connection with the processor of the extractor hood, so that the extractor hood can determine the smoke amount and / or the smoke outlet position in the cooking environment based on the detection data obtained by the detection device, and then control the opening and closing state of the upper smoke inlet port 105 of the smoke collecting hood 1 and / or the left smoke inlet port 102a and / or the right smoke inlet port 102b according to the smoke amount and / or the smoke outlet position.

[0056] In the present application, the detection device can be provided on the range hood so that the detection device is in communication connection with the processor of the range hood. Of course, the detection device can also be an external device independent of the range hood, as long as the detection device can be in communication connection with the processor of the range hood. In the present application, the detection device can feed back the detection data to the processor of the range hood to determine the smoke amount and / or the smoke position in the cooking environment by the processor of the range hood; of course, for the detection device with computing power, the detection device can also determine the smoke amount and / or the smoke position by itself, and then feed back the smoke amount and / or the smoke position information to the processor of the range hood to reduce the workload of the processor of the range hood. In the present application, the smoke position refers to the position of the smoke point, which can include the height position of the smoke point. It can be understood that due to the different heights of the cookers, the height positions of the smoke points of the same cooking utensils will be different, or for the same cooker, due to the different heights of different cooking utensils, the height positions of the smoke points will also be different; it can also include the left or right position of the smoke point below the range hood, for example, for a double-burner cooker, the cooking utensil on the left burner can smoke, and the smoke point is on the left side of the range hood below the range hood, or the cooking utensil on the right burner can smoke, and the smoke point is on the right side of the range hood below the range hood.

[0057] The technical scheme of the present application first determines the smoke amount and / or the smoke position in the cooking environment based on the detection data obtained by the detection device, and then controls the opening and closing state of the upper smoke inlet 105 and / or the lower smoke inlet 102 of the smoke collecting hood 1 according to the smoke amount and / or the smoke position; for example, when the smoke amount is less than a first preset value, only the lower smoke inlet 102 is opened to meet the demand for smoke suction, and when the smoke amount is greater than a second preset value, the second preset value is greater than or equal to the first preset value, the lower smoke inlet 102 and the upper smoke inlet 105 are controlled to be opened at the same time, that is, the lower smoke inlet 102 cannot fully meet the demand for smoke suction, and part of the smoke needs to be opened together with the upper smoke inlet 105 to assist in smoke suction; for example, when the smoke position is higher than the position of the lower smoke inlet 102 (for a light and thin side suction type range hood, when a multi-layer steamer is used for cooking, due to the high height of the multi-layer steamer, this situation may occur), since the smoke goes up under the action of the hot plume, the smoke exhaust efficiency of the opened lower smoke inlet 102 is low, and at this time the upper smoke exhaust inlet can be opened alone for smoke exhaust (see Figure 11 ); for example, for the cooking scene of using a multi-layer steamer on the left burner and using a wok on the right burner, there are both the case of high smoke position and the case of large smoke amount, and therefore the upper smoke inlet 105 and the lower smoke inlet 102 need to be opened at the same time for smoke exhaust (see Figure 12 ); in other words, the technical scheme of the present application can meet the different smoke suction demands of different cooking scenes.

[0058] In the present application, the preset value of the smoke amount (including the first preset value and the second preset value) generally refers to the concentration value of particulate matter or pollutants in the air. When the smoke amount is less than the first preset value, i.e., the current concentration of the smoke is less than the first preset concentration value, the smoke concentration is low, and only the lower smoke inlet can be controlled to open to meet the demand for oil fume extraction. However, the design is not limited thereto, and in other embodiments, the preset value of the smoke amount can also refer to the optical density value of the smoke. The optical density reflects the smoke concentration by measuring the degree of light obstruction by the smoke, and the larger the value, the higher the smoke concentration.

[0059] In an embodiment, the detection device can include a ranging device, and the detection data includes height data obtained based on the ranging device. The processor of the range hood can determine the type of the cooking utensil according to the height data, and then determine whether there is a smoke outlet position higher or lower than the preset height according to the type of the cooking utensil.

[0060] In the present embodiment, the ranging device can be configured as a ranging sensor arranged on the front panel 131 of the smoke collecting hood 1, and the ranging sensor can be rotatably arranged to scan the heights of different positions of the cooking utensil through rotation of the ranging sensor, so as to obtain height data for representing the profile of the corresponding cooking utensil, and then determine the type of the corresponding cooking utensil (e.g., a steamer, a frying pan, a soup pot, a frying pan, etc.). It can be understood that the smoke outlet position heights of different types of cooking utensils are generally different. For example, the smoke outlet position height of a steamer is generally higher than that of a soup pot, the smoke outlet position height of a soup pot is generally higher than that of a frying pan, and the smoke outlet position height of a frying pan is generally higher than that of a frying pan.

[0061] In other embodiments, the ranging sensor can also be arranged without rotation. In this case, a plurality of ranging sensors can be arranged, e.g., to form a ranging sensor array, to measure the heights of different positions of the cooking utensil. In other embodiments, the type of the cooking utensil can be determined simply by the highest data detected, without the need to represent the profile of the cooking utensil by a series of height data.

[0062] In another embodiment, the detection device can include a vision device, and the detection data includes image data obtained based on the vision device. The processor of the range hood can determine the type of the cooking utensil according to the image data, and then determine whether there is a smoke outlet position higher or lower than the preset height according to the type of the cooking utensil.

[0063] In this embodiment, the visual device includes a camera arranged on the front panel 131 of the smoke hood 1 and arranged downward, so as to acquire the actual image of the cooking utensil on the cooking range through the camera, and then match the actual image with the pre-stored image of the cooking utensil to determine the type of the corresponding cooking utensil (steamer, frying pan, soup pot, frying pan, etc.). It can be understood that the smoke outlet position height of different types of cooking utensils is usually different. For example, the smoke outlet position height of the steamer is usually higher than that of the soup pot, the smoke outlet position height of the soup pot is usually higher than that of the frying pan, and the smoke outlet position height of the frying pan is usually higher than that of the frying pan.

[0064] In still another embodiment, the detection device can also simultaneously include the distance measuring device and the visual device. In this embodiment, the type of the cooking utensil is first independently determined through the height data and the image data, and only when the types of the cooking utensils determined by the two methods are consistent, the type of the corresponding cooking utensil can be determined. If the types of the cooking utensils determined by the two methods are different, re-determination is needed. In this embodiment, the type of the cooking utensil is determined by two determination methods, which can effectively improve the accuracy of the determination of the type of the cooking utensil.

[0065] In addition, the detection device can also include a smoke sensor and / or a visual device for acquiring smoke amount data. The smoke sensor can directly acquire the smoke amount data, and the visual device can identify the size of the smoke amount through the cooking picture, so that the processor of the range hood can control the opening and closing state of the upper smoke inlet 105 and / or the left smoke inlet 102a and / or the right smoke inlet 102b according to the smoke amount data. For example, but not limited to, when the smoke amount on the left and right sides below the smoke hood 1 is equivalent, which usually corresponds to using the same cooking utensil on the two burners for cooking, the left smoke inlet 102a and the right smoke inlet 102b are controlled to be opened to the same opening degree (see Figure 13 ), so that the left smoke inlet 102a and the right smoke inlet 102b have equivalent smoke suction negative pressure to evenly distribute the flue gas to the left and right. When the smoke amount on one side is greater than that on the other side, which usually corresponds to using different cooking utensils on the two burners for cooking, the opening degree of one of the left smoke inlet 102a and the right smoke inlet 102b corresponding to the side with larger smoke amount is greater than that of the other (see Figure 14 and Figure 15 ), so that the smoke inlet on the side with larger smoke amount has larger smoke suction negative pressure, which can reasonably distribute the smoke suction negative pressure of the exhaust fan, thereby reducing the working air volume of the exhaust fan and reducing the working noise.

[0066] The above merely describes preferred embodiments of the present application, and is not intended to limit the protection scope of the present application, and any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the inventive concept of the present application shall be included in the protection scope of the present application.

Claims

1. A range hood, characterized in that, include: A smoke hood has a smoke collection chamber, an upper smoke inlet communicating with the smoke collection chamber, and a lower smoke inlet communicating with the smoke collection chamber. The lower smoke inlet is located below the upper smoke inlet and includes a left smoke inlet and a right smoke inlet. The upper smoke inlet panel can be movably opened and closed, and the upper smoke inlet panel can move into the smoke collection chamber to open the upper smoke inlet; as well as The opening and closing mechanism is provided for both the left smoke inlet and the right smoke inlet, so that both the left smoke inlet and the right smoke inlet can be opened and closed movably.

2. The range hood as described in claim 1, characterized in that, When the upper smoke inlet panel opens the upper smoke inlet, there is a gap between the upper edge and the lower edge of the upper smoke inlet panel and the upper smoke inlet.

3. The range hood as described in claim 2, characterized in that, The range hood also includes a rotating arm, the upper smoke inlet panel is fixedly connected to the upper end of the rotating arm, the lower end of the rotating arm is rotatably connected to the smoke collection hood, and the rotating connection point of the rotating arm is located below the upper smoke inlet.

4. The range hood as described in claim 1, characterized in that, When the upper smoke inlet panel opens the upper smoke inlet, the upper smoke inlet panel tilts from bottom to top in a direction away from the upper smoke inlet.

5. The range hood as described in claim 1, characterized in that, The range hood also includes a first driving device disposed inside the smoke collection hood. The first driving device includes a power component and a transmission mechanism. The power component drives the upper smoke inlet panel to open and close through the transmission mechanism.

6. The range hood as described in claim 5, characterized in that, The transmission mechanism is configured as a linkage mechanism.

7. The range hood as described in claim 1, characterized in that, The lower smoke inlet is provided with a smoke inlet groove that is recessed into the smoke collection chamber. The smoke inlet groove is provided with a smoke passage that communicates with the smoke collection chamber. The smoke passage includes a left smoke inlet and a right smoke inlet arranged in a left-right direction.

8. The range hood as described in claim 7, characterized in that, The smoke inlet is located on the upper wall of the smoke inlet groove, and the opening and closing mechanism is located on the upper side of the smoke inlet.

9. The range hood as described in claim 7, characterized in that, An oil cup is provided below the smoke collection hood. The lower wall of the smoke inlet groove is inclined, and the upper side of the lower wall is close to the back plate of the smoke collection hood. The lower side of the lower wall extends into the opening of the oil cup.

10. The range hood as described in claim 9, characterized in that, The upper side of the lower tank wall is provided with a bent flange. The side of the bent flange away from the lower tank wall is connected to the back plate, and the bent flange and the back plate together form an oil guide groove, which is connected to the oil cup.

11. The range hood as described in claim 7, characterized in that, The opening and closing mechanism is configured as a louver mechanism, each of which includes a second driving device and multiple blades. The second driving device can drive the multiple blades to swing, thereby opening and closing the left smoke inlet and / or the right smoke inlet.

12. The range hood according to any one of claims 1 to 11, characterized in that, The range hood also includes a detection device, which is communicatively connected to the processor of the range hood, so that the range hood can determine the amount of smoke and / or the smoke outlet position in the cooking environment based on the detection data obtained by the detection device, and then control the opening and closing state of the upper smoke inlet and / or the left smoke inlet and / or the right smoke inlet of the smoke collection hood according to the amount of smoke and / or the smoke outlet position.

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