Auxiliary air inlet device and range hood

Abstract

The utility model relates to the field of kitchen electric appliances, in particular to an auxiliary air inlet device and a range hood. The auxiliary air inlet device is installed on a smoke guide plate of the range hood, the smoke guide plate is hinged to a range hood body of the range hood, and the auxiliary air inlet device comprises a drainage assembly. The drainage assembly is detachably mounted on the side, facing a main smoke inlet of the range hood, of the smoke guide plate, and the drainage assembly is located at the end, close to smoke incoming flow, of the smoke guide plate; the drainage assembly can form local negative pressure so that smoke can flow to the main smoke inlet to be drained. According to the auxiliary air inlet device, the drainage assembly is arranged to form local negative pressure, smoke to be overflowed can be drained and guided to the main smoke inlet of the range hood body, the smoke is not prone to condensation on the smoke guide plate, and the smudginess degree of the smoke guide plate is reduced. When the drainage assembly is cleaned, only the drainage assembly needs to be detached from the lower portion of the inner side face of the smoke guide plate, the drainage assembly is conveniently cleaned, and the plate face of the smoke guide plate is conveniently wiped and cleaned.

Description

Technical Field

[0001] The present application relates to the field of kitchen appliances, and in particular to an auxiliary air intake device and a range hood. Background Art

[0002] Existing side-suction range hoods use windshield flaps to improve the problem of smoke leakage. When the range hood is not in use, the windshield flap falls down and closes; when the range hood is working, the windshield flap is flipped up to a certain angle, and the escaping oil smoke is blocked by the windshield flap, preventing the oil smoke from escaping. The principle of the windshield flap is that the oil smoke is blocked by the filter or smoke hood near the air inlet, thereby changing direction and flowing to the outside of the range hood. When the oil smoke approaches the windshield flap, the flow rate decreases and adheres to the windshield flap, thereby achieving the effect of preventing smoke leakage.

[0003] The existing problem with windshield flaps is that the oil condensed on the windshield flaps falls along the windshield flaps, contaminating the countertops, or adheres to the windshield flaps and is difficult to clean. In the prior art, there is an auxiliary air intake device for side-suction range hoods, which is installed on the smoke guide plate and can generate negative pressure to re-inhale the spilled oil smoke from farther away into the air duct and discharge it into the public flue. However, the auxiliary air intake device is located in the interlayer of the smoke guide plate, and cleaning requires the entire device to be disassembled, which is difficult to operate. Utility Model Content

[0004] The purpose of the present application is to provide an auxiliary air intake device and a range hood, which can guide the overflowing smoke into the range hood without causing air pressure interference and is easier to clean.

[0005] The present application provides an auxiliary air inlet device, which is installed on a smoke guide plate of a range hood, wherein the smoke guide plate is hinged to a range hood body of the range hood, and the auxiliary air inlet device includes a flow guide assembly;

[0006] The flow guide component is detachably mounted on a side of the smoke guide plate facing the main smoke inlet of the range hood, and the flow guide component is located at an end of the smoke guide plate close to the smoke inflow;

[0007] The drainage component can form a local negative pressure to guide the smoke to flow toward the main smoke inlet.

[0008] In the above technical solution, further, the drainage assembly includes an impeller assembly and a smoke guide housing;

[0009] The smoke guide housing is connected to the smoke guide plate to enclose and form a receiving cavity, and the impeller assembly is installed in the receiving cavity;

[0010] The smoke guide housing is provided with an auxiliary smoke inlet and an auxiliary smoke outlet, the auxiliary smoke inlet flows toward the smoke, and the auxiliary smoke outlet flows toward the main smoke inlet, and the impeller assembly is used to drive the smoke to flow through the auxiliary smoke inlet and the auxiliary smoke outlet in sequence.

[0011] In the above technical solution, further, the length direction of the auxiliary smoke inlet is the length direction of the smoke guide plate;

[0012] The length direction of the auxiliary smoke outlet is the length direction of the smoke guide plate;

[0013] and / or,

[0014] A grid is provided at the auxiliary smoke inlet;

[0015] and / or,

[0016] A grid is arranged at the auxiliary smoke outlet.

[0017] In the above technical solution, further, the length of the auxiliary smoke inlet is adapted to the length of the main smoke inlet;

[0018] and / or,

[0019] The length of the auxiliary smoke inlet is adapted to the length of the auxiliary smoke outlet;

[0020] and / or,

[0021] The length of the auxiliary smoke outlet is adapted to the length of the main smoke inlet;

[0022] In the above technical solution, further, the smoke guide housing is in a long strip shape, and the length direction of the smoke guide housing is the length direction of the smoke guide plate;

[0023] The smoke guide housing is provided with a positioning piece, and the smoke guide plate is correspondingly provided with a positioning groove, and the positioning piece is installed in the positioning groove.

[0024] In the above technical solution, further, the impeller assembly includes a first driving device and a cross-flow impeller;

[0025] The length direction of the crossflow impeller is the length direction of the smoke guide plate; the first driving device is connected to one end of the crossflow impeller in the length direction to drive the crossflow impeller to rotate around the axis;

[0026] The other end of the cross-flow impeller in the length direction is rotatably mounted on the accommodating chamber.

[0027] In the above technical solution, further, the impeller assembly also includes a mounting assembly, and the mounting assembly includes a support seat and a bearing;

[0028] The support seat includes a base plate and a connecting shaft; the base plate is connected to the smoke guide housing; one end of the connecting shaft is connected to the base plate, and the other end of the connecting shaft is connected to the cross-flow impeller through the bearing.

[0029] In the above technical solution, further, a wire covering plate is provided on one side of the smoke guide plate facing the main smoke inlet, and the wire covering plate is connected to the smoke guide plate to enclose and form a wiring channel;

[0030] A wiring harness connecting the first driving device and the range hood body is located in the wiring channel.

[0031] In the above technical solution, further, it also includes a smoke sensor, and the smoke sensor is installed on the outside of the smoke guide shell.

[0032] The present application also provides a range hood, comprising a smoke guide plate and the auxiliary air inlet device described in the above solution.

[0033] In the above technical solution, further, it also includes a second driving device;

[0034] The second driving device is installed on the range hood body, and a driving end of the second driving device is connected to the smoke guide plate to drive the smoke guide plate to swing at a preset angle relative to the range hood body.

[0035] Compared with the prior art, the beneficial effects of this application are:

[0036] The auxiliary air inlet device provided by the present application can guide the smoke that is about to overflow to the main smoke inlet of the smoke machine body by setting a drainage component to form a local negative pressure, so that the smoke is not easy to condense on the smoke guide plate, thereby reducing the degree of dirtiness of the smoke guide plate. When cleaning the drainage component, it is only necessary to remove the drainage component from the lower part of the inner side of the smoke guide plate, which is convenient for cleaning the drainage component and wiping and cleaning the plate surface of the smoke guide plate.

[0037] The present application also provides a range hood, comprising the auxiliary air intake device described in the above solution. Based on the above analysis, it can be seen that the range hood also has the above beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1A schematic diagram of the flow diversion of the auxiliary air inlet device provided in this application;

[0040] Figure 2 A schematic diagram of the structure of the drainage assembly provided in this application;

[0041] Figure 3 A schematic diagram of the structure of the smoke guide plate provided for this application;

[0042] Figure 4 This is a schematic diagram of the assembly structure of the range hood main body and the smoke guide plate provided in this application.

[0043] In the figure: 101-smoke guide plate; 102-range hood body; 103-main smoke inlet; 104-drainage assembly; 105-smoke guide housing; 106-positioning piece; 107-auxiliary smoke inlet; 108-auxiliary smoke outlet; 109-motor; 110-crossflow impeller; 111-cover cap; 112-motor seat; 113-installation assembly; 114-support seat; 115-bearing; 116-connecting shaft; 117-wire cover plate; 118-smoke sensor; 119-flap; 120-lining plate; 121-connecting bracket; 122-driving bracket; 123-hinge base; 124-rotating hinge bracket; 125-push rod motor; 126-connecting rod; 127-rotating shaft. DETAILED DESCRIPTION

[0044] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] Embodiment 1

[0048] See also Figures 1 to 4 As shown, the auxiliary air intake device provided by the present application is installed on the range hood, and can be specifically set on the smoke guide plate 101 of the range hood, wherein the upper part of the smoke guide plate 101 is hinged to the range hood body 102 of the range hood. When the range hood is not in use, the smoke guide plate 101 fits with the smoke hood of the range hood body 102, and the oil smoke gathered on the smoke guide plate 101 can flow down along the smoke guide plate 101, fall into the inside of the smoke hood and be collected in the oil cup along the oil path. When the oil smoke area is too large, the lower end of the smoke guide plate 101 can swing relative to the range hood body 102 to expand the smoke collection area formed between the smoke guide plate 101 and the range hood body 102, thereby preventing the rising smoke from overflowing.

[0049] Specifically, the auxiliary air inlet device includes a guide assembly 104, which is detachably mounted on one side of the smoke guide plate 101 facing the main smoke inlet 103 of the range hood (i.e., the inner side of the smoke guide plate 101), and the guide assembly 104 is located at one end of the smoke guide plate 101 close to the smoke inflow ( Figure 1 The guide assembly 104 is capable of forming a local negative pressure to guide the smoke to flow toward the main smoke inlet 103.

[0050] When the range hood is actually in operation, smoke rises from the bottom to the top, and the guide assembly 104 is located at the bottom of the smoke guide plate 101 so that it can contact the incoming smoke flow as early as possible, and the guide assembly 104 forms a local negative pressure to guide the smoke that is about to overflow to the main smoke inlet 103 of the range hood body 102, and the smoke is sucked into the range hood body 102. The setting of the guide assembly 104 makes it difficult for smoke to condense on the smoke guide plate 101, reducing the degree of dirtiness of the smoke guide plate 101. When cleaning the guide assembly 104, it is only necessary to remove the guide assembly 104 from the lower part of the inner side of the smoke guide plate 101, which is convenient for cleaning the guide assembly 104 and wiping the surface of the smoke guide plate 101.

[0051] In an optional solution of this embodiment, the drainage assembly 104 includes an impeller assembly and a smoke guide housing 105, the smoke guide housing 105 is connected to the smoke guide plate 101 to enclose and form a receiving cavity, and the impeller assembly is installed in the receiving cavity. That is, the shell surrounding the impeller assembly is composed of the smoke guide housing 105 and the smoke guide plate 101, and a part of the structure of the smoke guide plate 101 is borrowed, so that the overall volume of the drainage assembly 104 can be reduced.

[0052] like Figure 2 As shown, the smoke guide housing 105 is in the shape of a long strip, and the length direction of the smoke guide housing 105 is the length direction of the smoke guide plate 101. A positioning member 106 is provided at the lower end of the smoke guide housing 105, and a positioning groove is correspondingly provided at the smoke guide plate 101. The positioning member 106 is installed in the positioning groove to make the installation position of the smoke guide housing 105 more accurate. The upper end of the smoke guide housing 105 can be connected to the smoke guide plate 101 by screws to improve the reliability of the connection.

[0053] Furthermore, the smoke guide housing 105 is provided with an auxiliary smoke inlet 107 and an auxiliary smoke outlet 108. The auxiliary smoke inlet 107 is directed toward the smoke flow, and the auxiliary smoke outlet 108 is directed toward the main smoke inlet 103. The rotation of the impeller assembly can accelerate the flow of oil smoke and air to form a local negative pressure area, so that the overflowing smoke flows into the smoke guide housing 105 from the auxiliary smoke inlet 107 and flows out of the smoke guide housing 105 from the auxiliary smoke outlet 108, thereby guiding the smoke to the main smoke inlet 103, thereby realizing the secondary absorption and gathering of the oil smoke.

[0054] In the optional solutions of this embodiment, specifically, the structure of the auxiliary smoke inlet 107 and the structure of the auxiliary smoke outlet 108 include the following solutions:

[0055] Solution 1: The length direction of the auxiliary smoke inlet 107 is the length direction of the smoke guide plate 101 ; the length direction of the auxiliary smoke outlet 108 is also the length direction of the smoke guide plate 101 .

[0056] Solution 2: A grid is provided at the auxiliary smoke inlet 107 .

[0057] Solution 3: A grid is provided at the auxiliary smoke outlet 108 .

[0058] Solution 4: The length direction of the auxiliary smoke inlet 107 is the length direction of the smoke guide plate 101 ; the length direction of the auxiliary smoke outlet 108 is also the length direction of the smoke guide plate 101 ; and a grid is provided at the auxiliary smoke inlet 107 .

[0059] Solution 5: The length direction of the auxiliary smoke inlet 107 is the length direction of the smoke guide plate 101 ; the length direction of the auxiliary smoke outlet 108 is also the length direction of the smoke guide plate 101 ; and a grid is provided at the auxiliary smoke outlet 108 .

[0060] Solution 6: A grid is provided at the auxiliary smoke inlet 107 ; and a grid is provided at the auxiliary smoke outlet 108 .

[0061] Solution seven: The length direction of the auxiliary smoke inlet 107 is the length direction of the smoke guide plate 101; the length direction of the auxiliary smoke outlet 108 is also the length direction of the smoke guide plate 101; and a grid is provided at the auxiliary smoke inlet 107; and a grid is provided at the auxiliary smoke outlet 108.

[0062] In the optional solutions of this embodiment, specifically, the length of the auxiliary smoke inlet 107 and the length of the auxiliary smoke outlet 108 include the following solutions:

[0063] Solution 1: The length of the auxiliary smoke inlet 107 matches the length of the main smoke inlet 103 .

[0064] Solution 2: The length of the auxiliary smoke inlet 107 is adapted to the length of the auxiliary smoke outlet 108 .

[0065] Solution three: The length of the auxiliary smoke outlet 108 matches the length of the main smoke inlet 103 .

[0066] Solution 4: The length of the auxiliary smoke inlet 107 matches the length of the main smoke inlet 103 ; and the length of the auxiliary smoke inlet 107 matches the length of the auxiliary smoke outlet 108 .

[0067] Solution 5: The length of the auxiliary smoke inlet 107 matches the length of the main smoke inlet 103 ; and the length of the auxiliary smoke outlet 108 matches the length of the main smoke inlet 103 .

[0068] Solution six: the length of the auxiliary smoke inlet 107 matches the length of the auxiliary smoke outlet 108 ; and the length of the auxiliary smoke outlet 108 matches the length of the main smoke inlet 103 .

[0069] Solution seven: the length of the auxiliary smoke inlet 107 matches the length of the main smoke inlet 103 ; and the length of the auxiliary smoke inlet 107 matches the length of the auxiliary smoke outlet 108 ; and the length of the auxiliary smoke outlet 108 matches the length of the main smoke inlet 103 .

[0070] like Figure 2 As shown, the auxiliary smoke inlet 107 is in the shape of a long strip, and the length direction of the auxiliary smoke inlet 107 is the length direction of the smoke guide plate 101. Optionally, the length of the auxiliary smoke inlet 107 is adapted to the length of the main smoke inlet 103. Specifically, the length of the auxiliary smoke inlet 107 is greater than the length of the main smoke inlet 103, which can expand the smoking range. In the case where multiple stoves are arranged under the smoke guide plate 101, the multiple stoves are generally arranged at intervals along the length direction of the smoke guide plate 101. When the pot on the stove generates smoke, the auxiliary smoke inlet 107 can cover the range of smoke generated by the pot, thereby preventing smoke from overflowing.

[0071] The length of the auxiliary smoke inlet 107 is adapted to the length of the auxiliary smoke outlet 108. Specifically, the length of the auxiliary smoke inlet 107 is greater than or equal to the length of the auxiliary smoke outlet 108. When the length of the auxiliary smoke inlet 107 is greater than the length of the auxiliary smoke outlet 108, the Venturi effect can be used to increase the flow rate of the oil smoke after passing through the auxiliary smoke outlet 108, thereby improving the smoking effect.

[0072] Similarly, the length direction of the auxiliary smoke outlet 108 is also the length direction of the smoke guide plate 101, and the length of the auxiliary smoke outlet 108 is adapted to the length of the main smoke inlet 103. Specifically, the length of the auxiliary smoke outlet 108 is not greater than the length of the main smoke inlet 103, so that the smoke flowing out of the auxiliary smoke outlet 108 can be sucked into the main smoke inlet 103 to avoid smoke overflow.

[0073] Furthermore, the auxiliary smoke inlet 107 and the auxiliary smoke outlet 108 are both removably provided with grid nets, which can increase the strength of the auxiliary smoke inlet 107 and the auxiliary smoke outlet 108 without affecting the flow of smoke; when cleaning the drainage assembly 104, the grid net can also be removed to facilitate cleaning of the grid net.

[0074] In an optional scheme of this embodiment, the impeller assembly includes a first driving device and a cross-flow impeller 110; the length direction of the cross-flow impeller 110 is the length direction of the smoke guide plate 101; the first driving device is connected to one end of the cross-flow impeller 110 in the length direction to drive the cross-flow impeller 110 to rotate around the axis; the other end of the cross-flow impeller 110 in the length direction is rotatably installed in the accommodating cavity.

[0075] In this embodiment, specifically, the crossflow impeller 110 includes two end covers arranged coaxially and spaced apart, and a plurality of long strip blades arranged along the circumference are connected between the two end covers, so that the crossflow impeller 110 forms a multi-blade, long cylindrical structure with forward multi-wing blades. When the crossflow impeller 110 rotates, the first driving device (specifically the motor 109) provides a rotational driving force from the end cover at one end of the crossflow impeller 110, so that the smoke directly enters radially from the blade gap on one side of the crossflow impeller 110 (opposite to the auxiliary smoke inlet 107), and then blows out from the blade gap on the other side (opposite to the auxiliary smoke outlet 108), and in this process, the smoke crosses the blades twice. When the crossflow impeller 110 rotates, the multiple blades of the crossflow impeller 110 rotate at the same speed in the same rotation direction, and the crossflow impeller 110 does not cause airflow interference to the smoke drainage.

[0076] Specifically, the motor 109 is fastened to the smoke guide housing 105 via a motor base 112 , and a drive shaft of the motor 109 is connected to an end cover at one end of the crossflow impeller 110 via a cap 111 .

[0077] Furthermore, a mounting assembly 113 is also provided at one end of the crossflow impeller 110 away from the motor 109. The mounting assembly 113 includes a support seat 114 and a bearing 115. The support seat 114 includes a bottom plate and a connecting shaft 116, and the bottom plate is fitted and connected to the inner wall of the smoke guide housing 105 and can be fixed by bolts. One end of the connecting shaft 116 is connected to the bottom plate, and the other end of the connecting shaft 116 is connected to the crossflow impeller 110 through the bearing 115, so that the rotation of the crossflow impeller 110 is smoother, thereby improving the efficiency of smoke guide.

[0078] In an optional solution of this embodiment, a wire covering plate 117 is further provided on the side of the smoke guide plate 101 facing the main smoke inlet 103, and the wire covering plate 117 is connected to the smoke guide plate 101 to enclose and form a wiring channel; the wiring harness connecting the first drive device and the range hood body 102 is located in the wiring channel.

[0079] In this embodiment, the motor 109 is connected to the power supply of the range hood body 102 through a wiring harness, so that the power supply can supply power to the operation of the motor 109. A wire covering plate 117 is provided on the inner side of the smoke guide plate 101, and the wire covering plate 117 is connected to the smoke guide plate 101 to enclose and form a wiring channel. The wiring harness is located in the wiring channel to hide the wiring harness, which not only makes the wiring more beautiful, but also protects the wiring harness.

[0080] In an optional solution of this embodiment, the auxiliary air intake device further includes a smoke sensor 118, and the smoke sensor 118 is installed on the outer side of the smoke guide housing 105. Specifically, the smoke sensor 118 is installed on the outer side of one end of the smoke guide housing 105, which can effectively identify the amount of oil smoke, and determine whether the auxiliary air intake device needs to be turned on according to the oil smoke concentration, thereby saving energy consumption.

[0081] Specifically, when the smoke sensor 118 does not detect oil smoke, the motor 109 driving the impeller is not turned on and the cross-flow impeller 110 remains stationary; when the smoke sensor 118 detects the oil smoke concentration, the motor 109 driving the impeller is turned on and the cross-flow impeller 110 rotates to suck the oil smoke from the edge of the smoke guide plate 101 into the drainage assembly 104 and then into the main smoke inlet 103.

[0082] Embodiment 2

[0083] The auxiliary air intake device in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0084] In an optional solution of this embodiment, the auxiliary air intake device also includes a second driving device; the second driving device is installed on the range hood body 102, and the driving end of the second driving device is connected to the smoke guide plate 101 to drive the smoke guide plate 101 to swing at a preset angle relative to the range hood body 102.

[0085] In this embodiment, if Figure 4 As shown, a rotating assembly is provided between the smoke guide plate 101 and the smoke machine body 102, so that the smoke guide plate 101 and the smoke machine body 102 can be hinged, and a second driving device is provided between the smoke guide plate 101 and the smoke machine body 102, which can provide driving force for the swing of the smoke guide plate 101. Optionally, the smoke guide plate 101 includes a flap 119 and a lining plate 120, and the lining plate 120 is pasted on the side of the flap 119 that fits the smoke collecting hood. A connecting bracket 121 and a driving bracket 122 are provided at the protrusion of the lining plate 120.

[0086] Specifically, rotating components are provided on both sides of the length direction of the smoke guide plate 101, and the rotating components are connected through a rotating shaft 127. The rotating components include a hinge base 123 and a rotating hinge bracket 124. The hinge base 123 is fixed on the smoke machine body 102 for hanging the smoke guide plate 101. The connecting bracket 121 is fixed to the rotating hinge bracket 124. The rotating hinge bracket 124 and the hinge base 123 are fixed by a rotating shaft 127 to realize the left and right linkage of the rotating component and drive the smoke guide plate 101 to flip.

[0087] The second driving device is specifically a push rod motor 125, which is connected to the smoke guide plate 101 through a connecting rod 126. The push rod of the push rod motor 125 is hinged to one end of the connecting rod 126, and the driving bracket 122 is hinged to the other end of the connecting rod 126. The push rod motor 125 controls the push rod to extend or retract, realizes the movement of the connecting rod 126, and further controls the opening or closing of the smoke guide plate 101.

[0088] Embodiment 3

[0089] Embodiment 3 of the present application provides a range hood, comprising the auxiliary air intake device of any of the above embodiments, and thus has all the beneficial technical effects of the auxiliary air intake device of any of the above embodiments, which will not be elaborated herein.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. An auxiliary air inlet device, mounted on a smoke guide plate of a range hood, wherein the smoke guide plate is hinged to a range hood body of the range hood, characterized in that: The auxiliary air inlet device includes a drainage component; The flow guide component is detachably mounted on a side of the smoke guide plate facing the main smoke inlet of the range hood, and the flow guide component is located at an end of the smoke guide plate close to the smoke inflow; The drainage component can form a local negative pressure to guide the smoke to flow toward the main smoke inlet.

2. The auxiliary air intake device according to claim 1, characterized in that: The drainage assembly includes an impeller assembly and a smoke guide housing; The smoke guide housing is connected to the smoke guide plate to enclose and form a receiving cavity, and the impeller assembly is installed in the receiving cavity; The smoke guide housing is provided with an auxiliary smoke inlet and an auxiliary smoke outlet, the auxiliary smoke inlet flows toward the smoke, and the auxiliary smoke outlet flows toward the main smoke inlet, and the impeller assembly is used to drive the smoke to flow through the auxiliary smoke inlet and the auxiliary smoke outlet in sequence.

3. The auxiliary air intake device according to claim 2, characterized in that: The length direction of the auxiliary smoke inlet is the length direction of the smoke guide plate; The length direction of the auxiliary smoke outlet is the length direction of the smoke guide plate; and / or, A grid is provided at the auxiliary smoke inlet; and / or, A grid is arranged at the auxiliary smoke outlet.

4. The auxiliary air intake device according to claim 3, characterized in that: The length of the auxiliary smoke inlet is adapted to the length of the main smoke inlet; and / or, The length of the auxiliary smoke inlet is adapted to the length of the auxiliary smoke outlet; and / or, The length of the auxiliary smoke outlet is adapted to the length of the main smoke inlet.

5. The auxiliary air intake device according to claim 2, characterized in that: The smoke guide housing is in the shape of an elongated strip, and the length direction of the smoke guide housing is the length direction of the smoke guide plate; The smoke guide housing is provided with a positioning piece, and the smoke guide plate is correspondingly provided with a positioning groove, and the positioning piece is installed in the positioning groove.

6. The auxiliary air intake device according to claim 2, characterized in that: The impeller assembly includes a first drive device and a crossflow impeller; The length direction of the crossflow impeller is the length direction of the smoke guide plate; the first driving device is connected to one end of the crossflow impeller in the length direction to drive the crossflow impeller to rotate around the axis; The other end of the cross-flow impeller in the length direction is rotatably mounted on the accommodating chamber.

7. The auxiliary air intake device according to claim 6, characterized in that: The impeller assembly also includes a mounting assembly, and the mounting assembly includes a support seat and a bearing; The support seat includes a base plate and a connecting shaft; the base plate is connected to the smoke guide housing; one end of the connecting shaft is connected to the base plate, and the other end of the connecting shaft is connected to the cross-flow impeller through the bearing.

8. The auxiliary air intake device according to claim 6, characterized in that: A wire covering plate is also provided on one side of the smoke guide plate facing the main smoke inlet, and the wire covering plate is connected to the smoke guide plate to enclose and form a wire routing channel; A wiring harness connecting the first driving device and the range hood body is located in the wiring channel.

9. The auxiliary air intake device according to claim 2, characterized in that: It also includes a smoke sensor, which is installed on the outside of the smoke guide shell.

10. A range hood, characterized in that: It comprises a smoke guide plate and an auxiliary air inlet device as claimed in any one of claims 1 to 9.

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