Baffle and range hood

Abstract

The present invention provides a baffle and a range hood, and relates to the technical field of kitchen appliances. The baffle comprises: a plate body, and a plurality of rectifiers are arranged at intervals on the upper surface of the plate body, and the gaps between two adjacent rectifiers form a rectifier channel. The smoke first enters the smoke outlet of the smoke hood from bottom to top, and then enters the inside of the smoke hood from the gap between the smoke outlet and the baffle. The smoke that passes the baffle can enter the rectifier channel. The rectifier is used to comb the airflow, straighten the disordered airflow, and turn it into a parallel and stable airflow. After the airflow is stable, it flows upward and enters the fan assembly. After the airflow becomes orderly from disorder, turbulence can be reduced, wind resistance can be reduced, and the air volume and noise can be increased.

Description

Technical Field

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

[0002] In order to increase the wind pressure, a baffle is provided inside the smoke hood. The baffle is located above the smoke inlet of the smoke hood. The oil smoke enters the smoke hood from the gap formed between the smoke hood and the baffle.

[0003] After the oil smoke passes through the baffle and enters the smoke hood, there is no fixed flow path and the airflow is disorderly, which easily produces noise. Summary of the invention

[0004] The object of the present invention is to provide a baffle and a range hood to alleviate the technical problem that there is no fixed flow path inside the smoke collecting hood of the existing range hood, the airflow is disorderly, and the disorderly airflow is prone to generate noise.

[0005] In a first aspect, an embodiment of the present invention provides a baffle, comprising: a plate body, a plurality of rectifying blades are arranged at intervals on the upper surface of the plate body, and a gap between two adjacent rectifying blades forms a rectifying channel.

[0006] Furthermore, the rectifying piece extends in a straight line, or the rectifying piece extends in a winding manner.

[0007] Furthermore, a plurality of the rectifier sheets are arranged in parallel.

[0008] Furthermore, the rectifier sheet includes an upper edge and a lower edge, and the lower edge is connected to the plate body;

[0009] The rectifying piece comprises a first side surface and a second side surface for forming two adjacent rectifying channels, wherein the first side surface and the second side surface are arranged opposite to each other;

[0010] In the direction from the upper edge to the lower edge, the first side surface is a curved surface convex toward the direction away from the second side surface; and / or; the second side surface is a plane or a curved surface convex toward the direction away from the first side surface;

[0011] Furthermore, in a cross section of the rectifier piece, a length of a line segment formed by the first side surface is longer than a length of a line segment formed by the second side surface.

[0012] Furthermore, the plate body is provided with a first through hole penetrating the plate body, and the first through hole is located at the bottom of the rectifying channel.

[0013] Furthermore, a downwardly bent baffle is provided at at least one side edge of the plate body, and the baffle is used to prevent oil smoke from entering the inside of the smoke hood from between the smoke hood and the side edge of the plate body.

[0014] Furthermore, the spoiler is located at the rear edge of the plate body.

[0015] Furthermore, the straightening piece on the plate body extends in the front-rear direction, and the straightening piece on the plate body extends to the surface of the spoiler;

[0016] and / or;

[0017] The spoiler is provided with a second through hole penetrating the front and rear surfaces of the spoiler, and the second through hole is located at the bottom of the rectifying channel.

[0018] In a second aspect, an embodiment of the present invention provides a range hood, comprising a fume collecting hood and the above-mentioned baffle.

[0019] Furthermore, a plug-in is provided at the rear end of the baffle plate, and a socket corresponding to the plug-in is provided on the smoke collecting hood;

[0020] A first connection structure is arranged at the front end of the baffle plate, and a second connection structure corresponding to the first connection structure is arranged on the smoke collecting hood.

[0021] Furthermore, one of the first connecting structure and the second connecting structure includes a bead-bumping clamp, and the other includes a bead-bumping shaft clamped to the bead-bumping clamp.

[0022] Furthermore, the front end of the baffle is higher than the rear end, the plug-in has an oil guide surface connected to the upper surface of the baffle, the plug-in passes through the socket, and there is an oil guide gap between the oil guide surface and the upper edge of the socket, and the smoke hood has an oil receiving structure located below the rear edge of the oil guide surface for receiving the oil stains flowing down from the oil guide surface.

[0023] Furthermore, the baffle has an upwardly folded edge on its edge;

[0024] The flange has a notch, and the notch is located at the rear edge of the oil guide surface so that oil can flow out from the notch.

[0025] Furthermore, the smoke collecting hood comprises an upper cavity wall and a lower cavity wall which are arranged at intervals, a fixing plate is connected between the upper cavity wall and the lower cavity wall, and the jack is located on the fixing plate.

[0026] Furthermore, the fixing plate includes an oil guide inclined plate located below the socket, and the oil guide inclined plate is located below the oil outlet port of the plug-in. From top to bottom, the oil guide inclined plate is inclined toward the rear side to introduce oil into the bottom of the inner cavity of the smoke hood.

[0027] Furthermore, the fixing plate has a ventilation hole at an upper portion of the insertion hole.

[0028] Furthermore, the smoke collecting hood comprises an upper cavity wall and a lower cavity wall, the lower cavity wall is provided with a smoke inlet, and the baffle is located between the upper cavity wall and the lower cavity wall;

[0029] The baffle is arranged obliquely relative to the upper cavity wall and / or the lower cavity wall.

[0030] Furthermore, the baffle is arranged obliquely relative to the lower cavity wall, and in the left-right direction, the distance L1 between one side edge of the baffle and the lower cavity is greater than the distance L2 between the other side edge of the baffle and the lower cavity;

[0031] And / or, the baffle is inclined relative to the upper cavity wall, and in the left-right direction, a distance L3 between one side edge of the baffle and the upper cavity is greater than a distance L4 between the other side edge of the baffle and the upper cavity.

[0032] Furthermore, the baffle is arranged obliquely relative to the lower cavity wall, and in the front-to-back direction, the distance L5 between one side edge of the baffle and the lower cavity is greater than the distance L6 between the other side edge of the baffle and the lower cavity;

[0033] And / or, the baffle is arranged obliquely relative to the upper cavity wall, and in the front-to-back direction, a distance L7 between one side edge of the baffle and the upper cavity is greater than a distance L8 between the other side edge of the baffle and the upper cavity.

[0034] Furthermore, the outer side wall of the inner cavity of the smoke hood is covered with a noise reduction layer.

[0035] Further, the smoke collecting hood includes an upper cavity wall, and a front cavity wall located in front of the upper cavity wall, a left cavity wall located on the left side of the upper cavity wall, a right cavity wall located on the right side of the upper cavity wall, and a rear cavity wall located on the rear side of the upper cavity wall;

[0036] The outer side walls of the upper cavity wall, the front cavity wall, the left cavity wall, the right cavity wall and the rear cavity wall are all covered with a noise reduction layer.

[0037] Furthermore, a switch mechanism is provided on the smoke collecting hood, and the switch mechanism includes a first recess and a second recess that are spaced apart, and a touch panel located at the opening sides of the first recess and the second recess;

[0038] A light emitter is disposed in the first recess, and a light receiver is disposed in the second recess;

[0039] The touch panel is provided with a light-transmitting window, and the first recess and the second recess are located at the rear side of the light-transmitting window.

[0040] Furthermore, the switch mechanism includes a keypad, and the back side of the touchpad is attached to the front side of the keypad;

[0041] The first recess and the second recess are arranged on the front side of the key plate.

[0042] Furthermore, a diffuser is provided in the first recess, and the diffuser is located at the front side of the light emitter, and the diffuser is used to make the light emitted by the light emitter be uniformly emitted from the front side of the diffuser.

[0043] The baffle provided by the embodiment of the present invention comprises: a plate body, on the upper surface of which a plurality of rectifiers are arranged at intervals, and the gaps between two adjacent rectifiers form a rectifier channel. The smoke first enters the smoke outlet of the smoke hood from bottom to top, and then enters the inside of the smoke hood from the gap between the smoke outlet and the baffle. The smoke that passes the baffle can enter the rectifier channel. The rectifier is used to comb the airflow, straighten out the disordered airflow, and turn it into a parallel and stable airflow. After the airflow is stable, it flows upward and enters the fan assembly. After the airflow becomes orderly from disorder, turbulence can be reduced, wind resistance can be reduced, and the air volume and noise can be increased.

[0044] The range hood provided by the embodiment of the present invention comprises a fume collecting hood and the above-mentioned baffle plate. Since the range hood provided by the embodiment of the present invention adopts the above-mentioned baffle plate, the range hood provided by the embodiment of the present invention also has the advantages of the baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram of a first baffle provided in an embodiment of the present invention;

[0047] Figure 2 for Figure 1 A top view of the baffle in FIG.

[0048] Figure 3 A top view of a second baffle provided by an embodiment of the present invention;

[0049] Figure 4 A schematic diagram of a third baffle provided in an embodiment of the present invention;

[0050] Figure 5 A schematic diagram of a fourth baffle provided by an embodiment of the present invention;

[0051] Figure 6A schematic diagram of a fifth baffle provided by an embodiment of the present invention;

[0052] Figure 7 A schematic diagram of the internal structure of a range hood provided by an embodiment of the present invention from a certain angle;

[0053] Figure 8 for Figure 7 A schematic diagram of the internal structure of the range hood from another angle;

[0054] Fig. 9 for Figure 7 Schematic diagram of the fixing plate of the range hood;

[0055] Fig.10 for Figure 7 A schematic diagram of a plate body of a baffle plate of a range hood;

[0056] Fig.11 A schematic diagram of the internal structure of another range hood provided by an embodiment of the present invention from a certain angle;

[0057] Fig.12 for Fig.11 Schematic diagram of the baffle of the range hood;

[0058] Fig.13 A cross-sectional view of a range hood provided by an embodiment of the present invention in a front view direction;

[0059] Fig.14 A cross-sectional view of a range hood provided by an embodiment of the present invention from a side view;

[0060] Fig.15 A cross-sectional view of a fume hood of a range hood provided by an embodiment of the present invention in a front view direction;

[0061] Fig.16 A cross-sectional view of a fume hood of a range hood provided by an embodiment of the present invention in a side view;

[0062] Fig.17 An exploded view of a switch mechanism of a range hood provided by an embodiment of the present invention;

[0063] Fig.18 for Fig.17 A partial enlarged view of position A in the middle;

[0064] Fig.19 A cross-sectional view of a switch mechanism of a range hood provided in an embodiment of the present invention.

[0065] Icon: 100- baffle; 110- plate body; 120- fairing; 121- first side; 122- second side; 130- first through hole; 140- baffle; 150- second through hole;

[0066] 210-plug-in; 220-jack; 230-flange; 240-fixing plate; 241-oil guide inclined plate; 242-ventilation hole;

[0067] 310-upper cavity wall; 320-lower cavity wall; 321-sinking platform; 322-oil receiving groove; 330-left cavity wall; 340-right cavity wall; 350-rear cavity wall; 360-front cavity wall;

[0068] 400 - noise reduction layer;

[0069] 500 - keypad; 510 - first recess; 520 - second recess; 530 - light emitter; 540 - light receiver; 600 - touchpad; 610 - light-transmitting window; 700 - diffuser. DETAILED DESCRIPTION

[0070] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It should be noted that when describing the baffle plate 100 in the present application, the “upper”, “lower”, “left”, “right”, “front” and “rear” mentioned are all the positions of the baffle plate 100 after being installed on the range hood.

[0072] like Figure 1-Figure 6 As shown, the baffle 100 provided by the embodiment of the present invention comprises: a plate body 110, on the upper surface of which a plurality of rectifiers 120 are arranged at intervals, and the gaps between two adjacent rectifiers 120 form a rectifier channel. The smoke first enters the smoke outlet of the smoke hood from bottom to top, and then enters the inside of the smoke hood from the gap between the smoke outlet and the baffle 100. The smoke that passes over the baffle 100 can enter the rectifier channel. The rectifier 120 is used to comb the airflow, straighten out the disordered airflow, and turn it into a parallel and stable airflow. After the airflow is stable, it flows upward and enters the fan assembly. After the airflow becomes orderly from disordered, turbulence can be reduced, wind resistance can be reduced, and the air volume and noise can be increased.

[0073] like Figure 1-Figure 3As shown, the baffle 100 is located above the smoke inlet of the smoke hood, and the extension direction of the straightening piece 120 on the baffle 100 can extend in the left-right direction or in the front-back direction. When extending in the left-right direction, the baffle 100 mainly straightens the smoke entering from the left and right sides of the baffle 100; when extending in the front-back direction, the baffle 100 mainly straightens the smoke entering from the front and rear sides of the baffle 100. Of course, the straightening piece 120 can also be set at an angle with the left-right direction or the front-back direction.

[0074] like Figure 1 and Figure 2 As shown, the rectifying piece 120 can extend in a straight line, that is, the rectifying piece 120 can be in the shape of a flat plate. Figure 3 As shown, the rectifying piece 120 can also extend in a winding manner, that is, the rectifying piece 120 can be in the shape of a wavy plate, and the rectifying channel formed by the wavy plate-shaped rectifying piece 120 is also wavy. When the flue gas flows in this rectifying channel, it will be hindered by the rectifying plate, thereby reducing the flow speed of the flue gas, releasing part of the energy, and making the flue gas run more stably.

[0075] The plurality of rectifying pieces 120 are arranged in parallel, and along the length direction of the rectifying channel, the widths at all positions are consistent, and have no obstructive effect on the airflow.

[0076] like Figure 4 As shown, the rectifier 120 includes an upper edge and a lower edge, and the lower edge is connected to the plate body 110; the rectifier 120 includes a first side surface 121 and a second side surface 122 for forming two adjacent rectifier channels, and the first side surface 121 and the second side surface 122 are arranged back to back; in the direction from the upper edge to the lower edge, the first side surface 121 is a curved surface convex in the direction away from the second side surface 122; the second side surface 122 is a plane or a curved surface convex in the direction away from the first side surface 121, and on the cross section of the rectifier 120, the length of the line segment formed by the first side surface 121 is longer than the length of the line segment formed by the second side surface 122.

[0077] In another embodiment, the fairing 120 can be wing-shaped. This fairing 120 has an asymmetric structure, that is, the first side 121 and the second side 122 are asymmetric. When the smoke flows out of the fairing channel, the airflow moves a longer distance on the first side 121, and the natural flow velocity is faster. According to Bernoulli's theorem, the faster the speed, the lower the air pressure, and the pressure difference between the upper and lower surfaces provides lift. In order to generate lift, the airflow needs to be continuously supplemented under the baffle 100 to accelerate the airflow under the baffle 100 to flow into the baffle 100, thereby improving the smoking effect.

[0078] like Figure 5As shown, the plate body 110 is provided with a first through hole 130 penetrating the plate body 110 , and the first through hole 130 is located at the bottom of the rectifying channel.

[0079] By providing the first through hole 130 on the baffle plate 100, the amount of smoke entering the smoke hood can be increased, greatly improving the efficiency of the range hood. In particular, for the solution in which the rectifying piece 120 is shaped like an airfoil, a portion of the smoke enters the rectifying channel from the side of the baffle plate 100, and a portion of the smoke enters the rectifying channel from the first through hole 130 from bottom to top, and then continues to move upward after contacting the first side surface 121 and the second side surface 122. Under the action of the airfoil structure, the air intake volume and wind speed are further increased. Therefore, the airfoil rectifying plate cooperates with the first through hole 130 to increase the wind speed on the one hand, and rectify the airflow on the other hand to reduce noise.

[0080] The oil smoke passes through the lower surface of the baffle plate 100, the first through hole 130 and the rectifying piece 120, and the oil in the smoke can adhere to the baffle plate 100 and the rectifying piece 120, and finally enter the inside of the smoke collecting hood through the oil guide structure. This structure adjusts the flow rate of the oil smoke, and at the same time, there are multiple parts for attaching the oil smoke, which improves the adhesion of the oil smoke and improves the grease separation degree.

[0081] A downwardly bent baffle plate 140 is provided at at least one side edge of the plate body 110, and the baffle plate 140 is used to prevent the oil smoke from entering the smoke hood from between the smoke hood and the side edge of the plate body 110. The baffle plate 140 can be provided at the rear edge of the plate body 110, or at the left or right edge of the plate body 110, depending on the different connection structures between the plate body 110 and the smoke hood.

[0082] Specifically, in this embodiment, a downwardly bent spoiler 140 is provided on the rear edge of the plate body 110 , and the spoiler 140 is used to prevent the oil smoke from entering the smoke hood from the rear edge of the smoke hood and the spoiler 140 .

[0083] The baffle plate 140 and the plate body 110 can be a single plate formed by bending, or can be two plates connected by welding or other connection relationships. After the baffle plate 100 is connected to the smoke hood, the lower edge of the baffle plate 140 abuts against the lower cavity of the smoke hood, thereby blocking the gap between the plate body 110 and the lower cavity at the rear side. In this way, the negative pressure generated by the fan assembly of the range hood is concentrated on the left edge, right edge and front edge of the baffle plate 100, increasing the flow rate of the airflow on the front and left and right sides, and improving the smoking effect on the front and left and right sides of the range hood. Since there is a wall blocking the back side, the fumes will not escape, and after improving the smoking effect on the front and left and right sides of the range hood, the smoking effect of the entire machine is improved. Figure 5As shown, under the stop of the baffle plate 140 , a portion of the smoke swirls back to the bottom of the baffle plate 100 , and then can enter the top of the baffle plate 100 from the first through hole 130 .

[0084] like Figure 6 As shown, the straightening piece 120 on the plate body 110 extends in the front-rear direction, and the straightening piece 120 on the plate body 110 extends to the surface of the spoiler 140 , thereby increasing the length of the straightening piece 120 .

[0085] The spoiler 140 is provided with a second through hole 150 penetrating through the front and rear surfaces of the spoiler 140 , and the second through hole 150 is located at the bottom of the rectifying channel.

[0086] The rectifiers 120 are installed on both sides of the second through hole 150. The rectifiers 120 on the baffle 140 are connected to the rectifiers 120 on the plate body 110. After the airflow enters the second through hole 150, it flows into the rectifier channel. The rectifiers 120 are used to comb the airflow, straightening out the possibly chaotic airflow and turning it into a parallel and stable airflow. The airflow enters the rectifiers 120 in the direction of the arrow, and the rectifiers 120 straighten out the airflow and turn it into a parallel and stable airflow, thereby increasing the air volume and reducing noise.

[0087] like Figure 7-Figure 19 As shown, the range hood provided by the embodiment of the present invention includes a fume hood and the above-mentioned baffle 100. Because the range hood provided by the embodiment of the present invention uses the above-mentioned baffle 100, the range hood provided by the embodiment of the present invention also has the advantages of the baffle 100. Figure 7-Figure 19 The baffle plate 100 in the figure does not have the straightening piece 120 drawn on it.

[0088] The range hood may have a double chamber, that is, the smoke collecting hood has two inhalation ports, each of which is correspondingly provided with a baffle plate 100 , and the left and right baffle plates 100 are symmetrically arranged.

[0089] like Figure 7 and Figure 8 As shown, a plug-in 210 is provided at the rear end of the baffle 100, and a socket 220 corresponding to the plug-in 210 is provided on the smoke hood; a first connecting structure is provided at the front end of the baffle 100, and a second connecting structure corresponding to the first connecting structure is provided on the smoke hood.

[0090] The baffle plate 100 and the smoke hood are detachably connected. The baffle plate 100 and the smoke hood are initially positioned using the plug 210 and the socket 220, and then the first connection structure and the second connection structure are used to securely connect the two.

[0091] The first connection structure and the second connection structure can be connected by a snap-fitting manner. Specifically, one of the first connection structure and the second connection structure includes a bead-bumping clamp and the other includes a bead-bumping shaft that is snap-fitted to the bead-bumping clamp. The bead-bumping clamp and the bead-bumping shaft belong to the prior art, and the bead-bumping shaft is inserted into the bead-bumping clamp to achieve the connection between the two.

[0092] The front end of the baffle 100 is higher than the rear end, the plug-in 210 has an oil guide surface connected to the upper surface of the baffle 100, the plug-in 210 passes through the socket 220, and there is an oil guide gap between the oil guide surface and the upper edge of the socket 220, and the smoke hood has an oil receiving structure located below the rear edge of the oil guide surface for receiving the oil stains flowing down from the oil guide surface.

[0093] In the front-to-back direction, the baffle plate 100 is tilted relative to the vertical direction. The oil on the upper surface of the baffle plate 100 can flow downward along the inclined plate surface to the plug-in 210, and then continue to flow along the oil guide surface on the plug-in 210 until it drips into the oil receiving structure below the oil guide surface. The oil receiving structure is located inside the smoke hood.

[0094] like Fig.11 and Fig.12 As shown, when the baffle plate 100 is connected to the plate body 110, the plug-in 210 can be located at the lower edge of the baffle plate 100 and bent toward the rear relative to the baffle plate 100. At this time, the upper surface of the plate body 110, the rear side surface of the baffle plate 100 and the upper surface of the plug-in 210 are connected to form a bending surface, and the oil on the upper surface of the plate body 110 flows along the bending surface to the rear side of the socket 220.

[0095] like Fig.10 As shown, the baffle plate 100 has an upwardly folded flange 230 on its edge; the flange 230 has a notch, and the notch is located at the rear edge of the oil guide surface so that oil can flow out from the notch.

[0096] The four sides of the baffle plate 100 all have an upwardly folded flange 230 structure. The flange 230 collects the oil on the baffle plate 100 to the position of the plug-in 210, and then flows out through the gap at the rear edge of the plug-in 210. The flange 230 collects the oil and then drains the oil in a direction through the gap, making the oil path more reasonable.

[0097] like Fig. 9 As shown, the smoke collecting hood includes an upper cavity wall 310 and a lower cavity wall 320 which are spaced apart from each other. A fixing plate 240 is connected between the upper cavity wall 310 and the lower cavity wall 320 , and the insertion hole 220 is located on the fixing plate 240 .

[0098] The lower cavity wall 320 has a smoke inlet, the upper cavity wall 310 has an air guide connected to the fan assembly, and there is a gap between the upper cavity wall 310 and the lower cavity wall 320 in the vertical direction. The baffle 100 is located between the upper cavity wall 310 and the lower cavity wall 320, and the fixing plate 240 is located at the rear side of the smoke hood. The upper edge of the fixing plate 240 can be connected to the upper cavity wall 310 by screws. The lower cavity wall 320 of the smoke hood has a sinking platform 321 structure that is concave upward, and the smoke inlet is located on the top surface of the sinking platform 321. The part of the smoke hood located around the sinking platform 321 can form an oil receiving groove 322.

[0099] The lower edge of the baffle plate 100 abuts against the inner wall of the top surface of the sink 321, and the baffle plate 100 is located on the lower side of the plug-in 210, and the lower surface of the plate body 110 is connected to the upper surface of the baffle plate 100. The oil stains on the lower surface of the plate body 110 can flow along the lower surface of the inclined plate body 110 to the baffle plate 100, and then the baffle plate 100 guides the oil stains to the top surface of the sink 321. Because the smoke hood as a whole is in an inclined state with the front higher and the back lower, the oil stains on the top surface of the sink 321 can flow into the oil collecting groove 322 on the rear side.

[0100] like Figure 7 and Figure 8 As shown, the fixing plate 240 includes an oil guide inclined plate 241 located below the insertion hole 220, and the oil guide inclined plate 241 is located below the oil outlet port of the plug-in 210. From top to bottom, the oil guide inclined plate 241 is inclined toward the rear side to introduce oil into the bottom of the inner cavity of the smoke hood.

[0101] The oil guide inclined plate 241 is inclined toward the oil receiving groove 322, and the oil stains left on the plug 210 can fall on the oil guide inclined plate 241, and then the oil stains are guided into the oil receiving groove 322 by the oil guide inclined plate 241, so as to prevent the oil from splashing outside the fume collecting hood when the oil falls, and make the oil path more reasonable. The inclination degree of the baffle plate 100 is different from that of the oil guide inclined plate 241, and they do not interfere with each other.

[0102] The fixing plate 240 has a ventilation hole 242 at the upper portion of the insertion hole 220 to prevent the fixing plate 240 from obstructing the movement of the airflow in the inner cavity of the smoke hood and also to reduce the mass of the fixing plate 240 .

[0103] like Fig.13 and Fig.14 As shown, the smoke hood includes an upper cavity wall 310 and a lower cavity wall 320 , the lower cavity wall 320 has a smoke inlet, and the baffle plate 100 is located between the upper cavity wall 310 and the lower cavity wall 320 ; the baffle plate 100 is inclined relative to the upper cavity wall 310 and / or the lower cavity wall 320 .

[0104] By setting the inclination degree of the baffle plate 100, the baffle plate 100 is inclined with the upper cavity wall 310. The baffle plate 100 relative to the inclination of the upper cavity wall 310 will have a side close to the upper cavity wall 310 and a side away from the upper cavity wall 310 in the inclination direction, and a narrow opening will be formed between the side close to the upper cavity wall 310 and the upper cavity wall 310. The airflow path before the narrow opening is wider, and the airflow path becomes wider after passing through the narrow opening. Therefore, a Venturi tube structure will be formed before and after the narrow opening. The suction and exhaust structure at the narrow opening forms a Venturi effect, which increases the negative pressure in the air inlet area before the narrow opening, so that the negative pressure can be centered, and the air flow speed is accelerated, the path is smoother, and the air volume and maximum static pressure of the range hood are increased. The wind noise caused by the cross-flow and collision of wind sources is reduced, and the noise generated by the suction is effectively reduced while the exhaust volume is increased. Similarly, when the baffle 100 is inclined relative to the lower cavity wall 320, a Venturi tube structure is formed at the narrow opening, and a Venturi effect is generated, which increases the negative pressure in the air inlet area in front of the narrow opening. The effect will not be repeated.

[0105] Specifically, Fig.13 As shown, in this embodiment, the baffle plate 100 is tilted relative to the lower cavity wall 320. In the left-right direction, the distance L1 between one side edge of the baffle plate 100 and the lower cavity is greater than the distance L2 between the other side edge of the baffle plate 100 and the lower cavity. At the narrow opening with a spacing of L2, the baffle plate 100 and the lower cavity wall 320 form a venturi tube structure. The baffle plate 100 is tilted relative to the upper cavity wall 310. In the left-right direction, the distance L3 between one side edge of the baffle plate 100 and the upper cavity is greater than the distance L4 between the other side edge of the baffle plate 100 and the upper cavity. At the narrow opening with a spacing of L4, the baffle plate 100 and the upper cavity wall 310 form a venturi tube structure. In the left-right direction, the baffle plate 100 can form a venturi tube structure with both the upper cavity wall 310 and the lower cavity wall 320.

[0106] like Fig.14 As shown, the baffle plate 100 and the lower cavity wall 320 are not only arranged obliquely in the left-right direction, but also in the front-back direction. The baffle plate 100 is arranged obliquely relative to the lower cavity wall 320. In the front-back direction, the distance L5 between one side edge of the baffle plate 100 and the lower cavity is greater than the distance L6 between the other side edge of the baffle plate 100 and the lower cavity. At the narrow opening with a spacing of L6, the baffle plate 100 and the upper cavity wall 310 form a venturi tube structure. The baffle plate 100 is arranged obliquely relative to the upper cavity wall 310. In the front-back direction, the distance L7 between one side edge of the baffle plate 100 and the upper cavity is greater than the distance L8 between the other side edge of the baffle plate 100 and the upper cavity. At the narrow opening with a spacing of L8, the baffle plate 100 and the lower cavity wall 320 form a venturi tube structure.

[0107] like Fig.15 and Fig.16 As shown, the outer wall of the inner cavity of the smoke hood is covered with a noise reduction layer 400, and the noise reduction layer 400 can cover the entire outer wall of the inner cavity of the smoke hood, thus forming a five-sided sound absorption structure. Specifically, the smoke hood includes an upper cavity wall 310, a front cavity wall 360 located at the front side of the upper cavity wall 310, a left cavity wall 330 located at the left side of the upper cavity wall 310, a right cavity wall 340 located at the right side of the upper cavity wall 310, and a rear cavity wall 350 located at the rear side of the upper cavity wall 310; the outer walls of the upper cavity wall 310, the front cavity wall 360, the left cavity wall 330, the right cavity wall 340, and the rear cavity wall 350 are all covered with a noise reduction layer 400. The noise reduction layer 400 can be a polymer resin damping and silent cotton, which can cover most of the area of ​​the inner cavity, and can play a role in sound absorption and noise reduction, and can also greatly reduce the low-frequency resonance formed by multiple accessories inside the range hood. The smoke hood further comprises an outer shell located outside the inner cavity, a gap is provided between the inner cavity and the outer shell, and the gap is filled with sound-proof cotton.

[0108] like Figure 17-Figure 19 As shown, the smoke hood is provided with a switch mechanism, and the switch mechanism includes a first recess 510 and a second recess 520 arranged at intervals, and a touch panel 600 located at the opening sides of the first recess 510 and the second recess 520; a light emitter 530 is arranged in the first recess 510, and a light receiver 540 is arranged in the second recess 520; a light-transmitting window 610 is arranged on the touch panel 600, and the first recess 510 and the second recess 520 are located at the rear side of the light-transmitting window 610.

[0109] The smoke hood has a switch mechanism for controlling the range hood, which can be triggered by touch. On the rear side of the touch panel 600, the light receiver 540 and the light emitter 530 are separated by the first recess 510 and the second recess 520 to prevent the light emitted by the light emitter 530 from directly affecting the light receiver 540 without reflection. The light emitter 530 can emit infrared light, which passes through the light-transmitting window 610 and then reflects to the light receiver 540 after contacting the finger, thereby triggering the switch mechanism. After the light receiver 540 is separated from the light emitter 530, the sensitivity of the switch mechanism is improved.

[0110] Specifically, the switch mechanism includes a key plate 500, and the back side of the touch pad 600 is attached to the front side of the key plate 500; the first recess 510 and the second recess 520 are arranged on the front side of the key plate 500, the first recess 510 and the second recess 520 are arranged at intervals up and down, and the light-transmitting window 610 is strip-shaped, and there are multiple first recesses 510, second recesses 520 and light-transmitting windows 610 on the switch mechanism, corresponding to multiple function key areas of the range hood.

[0111] A diffuser 700 is also provided in the first recess 510. The diffuser 700 is located at the front side of the light emitter 530. The diffuser 700 is used to make the light emitted by the light emitter 530 be uniformly emitted from the front side of the diffuser 700. The diffuser 700 belongs to the prior art. After light enters from one side of the diffuser 700, it can be uniformly diffused to the other side covering the entire diffuser 700. The light emitter 530 used in this embodiment can be an LED light block. When the LED light block is observed from the outside through the diffuser 700, what is seen is not a light point, but the entire diffuser 700 is emitting light. The diffuser 700 is not dazzling when viewed through the light-transmitting window 610, and the light is evenly dispersed on the light-transmitting window 610.

[0112] The touch panel 600 includes a main body, which is opaque, and has an assembly groove extending downward at the upper edge of the main body. The assembly groove runs through the front and rear surfaces of the main body, and a light-transmitting block is inserted into the assembly groove, and the light-transmitting block forms the light-transmitting window 610. The front and top surfaces of the light-transmitting block become light-emitting surfaces. Moreover, under the action of the diffuser 700, the front and top surfaces of the light-transmitting block emit light uniformly.

[0113] In order to facilitate the docking of the key panel 500 and the touch panel 600 , a positioning protrusion may be provided on the key panel 500 , and a positioning hole 220 may be provided on the touch panel 600 .

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A baffle, characterized in that: The baffle plate is used to be installed above the smoke inlet of the smoke hood, and the oil smoke enters the smoke hood from the gap formed between the smoke hood and the baffle plate. The baffle plate comprises: a plate body (110), a plurality of rectifying blades (120) are arranged at intervals on the upper surface of the plate body (110), and the gap between two adjacent rectifying blades (120) forms a rectifying channel, so that the smoke passing over the baffle plate can enter the rectifying channel; The plate body (110) is provided with a first through hole (130) penetrating the plate body (110), and the first through hole (130) is located at the bottom of the rectifying channel; And / or, a downwardly bent baffle plate (140) is provided at at least one side edge of the plate body (110), and the baffle plate (140) is used to prevent oil smoke from entering the smoke hood from between the smoke hood and the side edge of the plate body (110) into the interior of the smoke hood.

2. The baffle according to claim 1, characterized in that: The rectifying piece (120) extends in a straight line, or the rectifying piece (120) extends in a winding manner.

3. The baffle according to claim 1, characterized in that: A plurality of the rectifying sheets (120) are arranged in parallel.

4. The baffle according to claim 1, characterized in that: The rectifier piece (120) comprises an upper edge and a lower edge, and the lower edge is connected to the plate body (110); The rectifying piece (120) comprises a first side surface (121) and a second side surface (122) for forming two adjacent rectifying channels, wherein the first side surface (121) and the second side surface (122) are arranged opposite to each other; In the direction from the upper edge to the lower edge, the first side surface (121) is a curved surface convex in a direction away from the second side surface (122); and / or; the second side surface (122) is a plane or a curved surface convex in a direction away from the first side surface (121); Furthermore, in a cross section of the rectifying piece (120), the length of a line segment formed by the first side surface (121) is longer than the length of a line segment formed by the second side surface (122).

5. The baffle according to claim 1, characterized in that: A downwardly bent baffle plate (140) is provided at at least one side edge of the plate body (110), and the baffle plate (140) is used to prevent oil smoke from entering the smoke hood from between the smoke hood and the side edge of the plate body (110), and the baffle plate (140) is located at the rear side edge of the plate body (110).

6. The baffle according to claim 1, characterized in that: A downwardly bent baffle (140) is provided at at least one side edge of the plate body (110), and the baffle (140) is used to prevent oil smoke from entering the smoke hood from between the smoke hood and the side edge of the plate body (110) into the smoke hood; the baffle (120) on the plate body (110) extends in the front-rear direction, and the baffle (120) on the plate body (110) extends to the surface of the baffle (140); and / or; The spoiler (140) is provided with a second through hole (150) penetrating the front and rear surfaces of the spoiler (140), and the second through hole (150) is located at the bottom of the rectifying channel.

7. A range hood, characterized in that: It comprises a smoke collecting hood and a baffle (100) as claimed in any one of claims 1 to 6.

8. The range hood according to claim 7, characterized in that: A plug-in unit (210) is provided at the rear end of the baffle plate (100), and a plug-in unit (220) corresponding to the plug-in unit (210) is provided on the smoke collecting hood; A first connection structure is arranged at the front end of the baffle plate (100), and a second connection structure corresponding to the first connection structure is arranged on the smoke collecting hood.

9. The range hood according to claim 8, characterized in that: Among the first connection structure and the second connection structure, one includes a ball-bumping clamp, and the other includes a ball-bumping shaft clamped with the ball-bumping clamp.

10. The range hood according to claim 8, characterized in that: The front end of the baffle plate (100) is higher than the rear end, the plug-in (210) has an oil guide surface connected to the upper surface of the baffle plate (100), the plug-in (210) passes through the insertion hole (220), an oil guide gap is provided between the oil guide surface and the upper edge of the insertion hole (220), and the smoke hood has an oil receiving structure located below the rear edge of the oil guide surface for receiving oil stains flowing down from the oil guide surface.

11. The range hood according to claim 10, characterized in that: The baffle plate (100) has an upwardly folded flange (230) on its edge; The flange (230) has a notch, and the notch is located at the rear edge of the oil guide surface, so that oil can flow out from the notch.

12. The range hood according to claim 10, characterized in that: The smoke collecting hood comprises an upper cavity wall (310) and a lower cavity wall (320) which are arranged at intervals, a fixing plate (240) is connected between the upper cavity wall (310) and the lower cavity wall (320), and the insertion hole (220) is located on the fixing plate (240).

13. The range hood according to claim 12, characterized in that: The fixing plate (240) comprises an oil guide inclined plate (241) located below the insertion hole (220), and the oil guide inclined plate (241) is located below the oil outlet port of the plug-in (210). From top to bottom, the oil guide inclined plate (241) is inclined toward the rear side, and is used to introduce oil dirt into the bottom of the inner cavity of the smoke hood.

14. The range hood according to claim 12, characterized in that: The fixing plate (240) has a ventilation hole (242) at an upper portion of the insertion hole (220).

15. The range hood according to any one of claims 7 to 14, characterized in that: The smoke collecting hood comprises an upper cavity wall (310) and a lower cavity wall (320); the lower cavity wall (320) is provided with a smoke inlet; and the baffle plate (100) is located between the upper cavity wall (310) and the lower cavity wall (320); The baffle plate (100) is arranged obliquely relative to the upper cavity wall (310) and / or the lower cavity wall (320).

16. The range hood according to claim 15, characterized in that: The baffle plate (100) is arranged obliquely relative to the lower cavity wall (320), and in the left-right direction, a distance L1 between one side edge of the baffle plate (100) and the lower cavity is greater than a distance L2 between the other side edge of the baffle plate (100) and the lower cavity; And / or, the baffle plate (100) is arranged obliquely relative to the upper cavity wall (310), and in the left-right direction, the distance L3 between one side edge of the baffle plate (100) and the upper cavity is greater than the distance L4 between the other side edge of the baffle plate (100) and the upper cavity.

17. The range hood according to claim 15, characterized in that: The baffle plate (100) is arranged obliquely relative to the lower cavity wall (320), and in the front-to-back direction, a distance L5 between one side edge of the baffle plate (100) and the lower cavity is greater than a distance L6 between another side edge of the baffle plate (100) and the lower cavity; And / or, the baffle plate (100) is arranged obliquely relative to the upper cavity wall (310), and in the front-to-back direction, a distance L7 between one side edge of the baffle plate (100) and the upper cavity is greater than a distance L8 between another side edge of the baffle plate (100) and the upper cavity.

18. The range hood according to any one of claims 7 to 14, characterized in that: The outer side wall of the inner cavity of the smoke collecting hood is covered with a noise reduction layer (400).

19. The range hood according to claim 18, characterized in that: The smoke collecting hood comprises an upper cavity wall (310), a front cavity wall (360) located at the front side of the upper cavity wall (310), a left cavity wall (330) located at the left side of the upper cavity wall (310), a right cavity wall (340) located at the right side of the upper cavity wall (310), and a rear cavity wall (350) located at the rear side of the upper cavity wall (310); The outer side walls of the upper cavity wall (310), the front cavity wall (360), the left cavity wall (330), the right cavity wall (340) and the rear cavity wall (350) are all covered with a noise reduction layer (400).

20. The range hood according to any one of claims 7 to 14, characterized in that: The smoke collecting hood is provided with a switch mechanism, the switch mechanism comprising a first recess (510) and a second recess (520) arranged at intervals, and a touch panel (600) located at the opening sides of the first recess (510) and the second recess (520); A light emitter (530) is disposed in the first recess (510), and a light receiver (540) is disposed in the second recess (520); The touch panel (600) is provided with a light-transmitting window (610), and the first recess (510) and the second recess (520) are located at the rear side of the light-transmitting window (610).

21. The range hood according to claim 20, characterized in that: The switch mechanism comprises a key plate (500), and the back side of the touch plate (600) is attached to the front side of the key plate (500); The first recess (510) and the second recess (520) are arranged on the front side of the key board (500).

22. The range hood according to claim 20, characterized in that: A diffuser sheet (700) is also provided in the first recess (510), and the diffuser sheet (700) is located at the front side of the light emitter (530). The diffuser sheet (700) is used to make the light emitted by the light emitter (530) be emitted evenly from the front side of the diffuser sheet (700).

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