Range hood and range hood system

Abstract

The invention provides a range hood and a range hood system, the range hood comprises a fan box and a smoke collecting body, and the front panel of the smoke collecting body is provided with an upper exhaust inlet and a lower exhaust inlet which are arranged at an interval; the smoke collecting body is provided with an air volume adjusting mechanism which is close to or located at the upper air suction opening and used for at least changing the air volume entering the upper air suction opening. The air volume adjusting mechanism can be switched among a first position, a second position and a third position, when the air volume adjusting mechanism is located at the first position, the upper air suction opening is closed, when the air volume adjusting mechanism is located at the second position or the third position, the upper air suction opening is opened, and when the air volume adjusting mechanism is located at the second position, the air volume entering the upper air suction opening is the first air volume. When the air volume adjusting mechanism is located at the third position, the air volume entering the upper air suction opening is the second air volume, the second air volume is larger than the first air volume, the range hood can intelligently adjust the air volume at the upper air suction opening according to different use scenes, and therefore the good oil smoke suction effect and the good noise reduction effect are both considered.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly to an oil fume extractor and a stove and fume extractor system. Background Art

[0002] Currently, the side inclination angle of the oil fume extractor is usually relatively large, resulting in a relatively large thickness, a bulky volume, and an unattractive installation of the oil fume extractor. If the side of the oil fume extractor is made thinner to reduce its thickness, the effect of sucking and exhausting fumes will become worse, and the fan needs to operate at a relatively high power to ensure the effect of sucking and exhausting fumes during the operation of the oil fume extractor; however, when the fan operates at a high power, the noise will also increase. Sometimes, in order to reduce the noise, users will reduce the power of the fan, and the ability of the oil fume extractor to suck and exhaust fumes will also decrease accordingly. Therefore, the oil fume extractors in the prior art are difficult to meet the requirements of sucking and exhausting fumes in different scenarios and cannot balance the noise requirements of users. Summary of the Invention

[0003] The purpose of the present invention is to provide an oil fume extractor and a stove and fume extractor system, so as to achieve a good effect of sucking and exhausting fumes by the oil fume extractor in various scenarios and balance the noise requirements of users.

[0004] The above purpose of the present invention can be achieved by the following technical solutions:

[0005] The present invention provides an oil fume extractor, which includes: a fan box and a smoke collecting body, and the smoke collecting body is communicated with the fan box;

[0006] The front panel of the smoke collecting body has an upper air suction opening and a lower air suction opening which are arranged at intervals;

[0007] The smoke collecting body also has an air volume adjusting mechanism, which is close to or located at the upper air suction opening and is used to at least change the air volume entering the upper air suction opening;

[0008] The air volume adjusting mechanism can be switched between a first position, a second position, and a third position,

[0009] When the air volume adjusting mechanism is in the first position, the upper air suction opening is closed,

[0010] When the air volume adjusting mechanism is in the second position or the third position, the upper air suction opening is opened,

[0011] When the air volume adjusting mechanism is in the second position, the air volume entering the upper air suction opening is a first air volume,

[0012] When the air volume adjusting mechanism is in the third position, the air volume entering the upper air suction opening is a second air volume, and the second air volume is greater than the first air volume.

[0013] In a preferred embodiment, the range hood further includes a range hood controller, which is configured to obtain a first signal, a second signal, and a third signal that characterize the magnitude of the cooking fire or the magnitude of the flue gas concentration of the cooking appliance, and the cooking fire or the flue gas concentration of the cooking appliance characterized by the first signal, the second signal, and the third signal increases in sequence.

[0014] In a preferred embodiment, if the range hood controller obtains the first signal, the air volume adjustment mechanism is located at the first position;

[0015] If the range hood controller obtains the second signal, the air volume adjustment mechanism is located at the second position;

[0016] If the range hood controller obtains the third signal, the air volume adjustment mechanism is located at the third position.

[0017] In a preferred embodiment, a blower is provided in the blower box,

[0018] If the range hood controller obtains the first signal, the power of the blower is controlled to be a first power;

[0019] If the range hood controller obtains the second signal, the power of the blower is controlled to be a second power;

[0020] If the range hood controller obtains the third signal, the power of the blower is controlled to be a third power;

[0021] The first power, the second power, and the third power increase in sequence.

[0022] In a preferred embodiment, a blower is provided in the blower box,

[0023] If the range hood controller obtains the first signal, the power of the blower is controlled to be a first power;

[0024] If the range hood controller obtains the second signal, the power of the blower is controlled to be the third power;

[0025] If the range hood controller obtains the third signal, the power of the blower is controlled to be the second power;

[0026] The first power, the second power, and the third power increase in sequence.

[0027] In a preferred embodiment, a blower is provided in the blower box, and the power of the blower includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence;

[0028] If the range hood controller obtains the first signal, it controls the power of the blower to be the first power;

[0029] If the range hood controller obtains the second signal, it controls the power of the blower to be the second power;

[0030] If the range hood controller obtains the third signal, it controls the power of the blower to be the second power.

[0031] In a preferred embodiment, a blower is provided in the blower box, and the power of the blower includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence;

[0032] If the range hood controller obtains the first signal, it controls the power of the blower to be the first power;

[0033] If the range hood controller obtains the second signal, it controls the power of the blower to be the third power;

[0034] If the range hood controller obtains the third signal, it controls the power of the blower to be the third power.

[0035] In a preferred embodiment, the smoke collecting body is a thin smoke collecting body. The thin smoke collecting body has a front panel and a back panel that are oppositely arranged and have a distance not exceeding a first preset interval. The thin smoke collecting body also has a left side panel and a right side panel that are oppositely arranged and have a distance not less than a second preset interval. The front panel is connected to both the left side panel and the right side panel, and the back panel is connected to both the left side panel and the right side panel.

[0036] In a preferred embodiment, the first preset interval is between 40 mm and 160 mm, and the second preset interval is between 890 mm and 900 mm.

[0037] In a preferred embodiment, the front panel of the thin smoke collecting body is an inclined panel at a preset angle with the vertical direction. The preset angle is not greater than 20° and not less than 8°, and the upper air suction opening and the lower air suction opening are arranged on the inclined panel.

[0038] In a preferred embodiment, the distance between the top of the front panel and the top of the back panel of the thin smoke collecting body is not less than 2 times the distance between the bottom of the front panel and the bottom of the back panel of the thin smoke collecting body, and / or, the distance between the top of the front panel and the top of the back panel of the thin smoke collecting body is not greater than 3 times the distance between the bottom of the front panel and the bottom of the back panel of the thin smoke collecting body.

[0039] In a preferred embodiment, the distance between the bottom of the front panel and the bottom of the rear panel of the thin smoke collecting body is 50 mm - 60 mm.

[0040] The distance between the top of the front panel and the top of the rear panel of the thin smoke collecting body is 120 mm - 140 mm.

[0041] In a preferred embodiment, the area S of the lower air suction opening 下 satisfies: S 下 ≤ f, and f ≤ 0.05 m².

[0042] In a preferred embodiment, the total area of the front panel of the smoke collecting body is S, and the ratio of S 下 / S is not greater than 0.15.

[0043] In a preferred embodiment, the area S of the upper air suction opening 上 satisfies: S 上 ≥ h; h ≥ 0.07 m² and / or h is greater than f.

[0044] In a preferred embodiment, the total area of the front panel of the smoke collecting body is S, and the area S of the upper air suction opening 上 satisfies: S 上 / S is not less than 0.2.

[0045] In a preferred embodiment, the upper edge of the upper air suction opening is close to or located at the top of the front panel, the lower edge of the lower air suction opening is close to or located at the bottom of the front panel, and the front panel further has a deflector, and along the flow direction of the flue gas, the deflector is arranged between the lower air suction opening and the upper air suction opening.

[0046] In a preferred embodiment, the area of the deflector is S 导 , the total area of the front panel of the smoke collecting body is S, and S 导 / S is not less than 0.3 and not greater than 0.65.

[0047] In a preferred embodiment, the air volume adjusting mechanism is a smoke gathering plate, and the smoke gathering plate is rotatably connected to the smoke collecting body up and down.

[0048] In a preferred embodiment, when the smoke gathering plate is in the first position, the angle between the smoke gathering plate and the front panel of the smoke collecting body is the first angle.

[0049] When the smoke gathering plate is in the second position, the angle between the smoke gathering plate and the front panel of the smoke collecting body is the second angle.

[0050] When the smoke collecting plate is in the third position, the angle between the smoke collecting plate and the front panel of the smoke collecting body is the third angle.

[0051] The first angle is less than the second angle, and the second angle is less than the third angle.

[0052] In a preferred embodiment, when the smoke collecting plate is in the second position, the angle M between the smoke collecting plate and the front panel of the smoke collecting body satisfies: 40° ≤ M ≤ 50°.

[0053] And / or

[0054] When the smoke collecting plate is in the third position, the angle N between the smoke collecting plate and the front panel of the smoke collecting body satisfies: 55° ≤ N ≤ 65°.

[0055] In a preferred embodiment, when the smoke collecting plate is in the third position, the area of the projection of the smoke collecting plate on the burner head is not less than 2 / 5 of the area of the burner head.

[0056] In a preferred embodiment, when the smoke collecting plate is in the third position, the area of the projection of the smoke collecting plate on the burner head is not greater than 2 / 3 of the area of the burner head.

[0057] In a preferred embodiment, the smoke collecting body is a thin smoke collecting body, the thin smoke collecting body has a front panel and a back panel that are oppositely arranged and have a distance not exceeding a first preset interval, and a left side panel and a right side panel that are oppositely arranged and have a distance not less than a second preset interval. The front panel is connected to both the left side panel and the right side panel, and the back panel is connected to both the left side panel and the right side panel.

[0058] The smoke collecting body further has a top panel, the top panel is connected to the left side panel, the right side panel, the front panel, and the back panel, the top panel has an extending portion extending out of the front panel, and the extending portion is provided with a top light-emitting area for downward lighting.

[0059] In a preferred embodiment, when the smoke collecting plate is in the third position, the projected area of the smoke collecting plate on the top light-emitting area is not less than 2 / 3 of the area of the top light-emitting area.

[0060] In a preferred embodiment, when the smoke collecting plate is in the third position, the projected area of the smoke collecting plate on the top light-emitting area is not greater than 4 / 5 of the area of the top light-emitting area.

[0061] In a preferred embodiment, the smoke collecting body includes a horizontally extending horizontal cavity and a vertically extending vertical cavity that are connected. The vertical cavity is located below the horizontal cavity.

[0062] The lateral cavity has a protruding portion that protrudes from the front panel of the longitudinal cavity, and the lower surface of the protruding portion has a light-emitting area capable of forming a preset pattern;

[0063] The range hood or the smoke collecting body has a reflector, and the position of the reflector at least includes a reflection position. When the reflector is located at the reflection position, at least a part of the reflector is located below the protruding portion to reflect the preset pattern formed by the light-emitting area.

[0064] In a preferred embodiment, the air volume adjustment mechanism is a smoke collecting plate, and the smoke collecting plate is rotatably connected to the smoke collecting body up and down;

[0065] The reflector is a smoke collecting plate; the reflection position includes the second position or the third position;

[0066] The smoke collecting plate has opposite inner and outer surfaces. The inner surface is closer to the upper air suction port than the outer surface. When the smoke collecting plate is located at the reflection position, the inner surface is used for collecting smoke, and the outer surface is used for reflecting the preset pattern formed by the light-emitting area.

[0067] In a preferred embodiment, an oil screen support member and an oil screen installed on the oil screen support member are provided in the cavity of the smoke collecting body, and the oil screen is located behind the upper air suction port;

[0068] A front oil guiding member is further provided in the cavity of the smoke collecting body, at least part of which is located in front of the oil screen. The upper end of the front oil guiding member is connected to the oil screen support member and is located below the oil screen. The front oil guiding member slopes forward and downward from the upper end to guide the oil liquid filtered by the front surface of the oil screen to the inner surface of the front panel.

[0069] In a preferred embodiment, the lower end of the front oil guiding member has a front oil collecting member. The front oil collecting member extends along the width direction of the smoke collecting body, and at least one side of the front oil collecting member has a first oil outlet.

[0070] In a preferred embodiment, a lower oil collecting member is provided on the inner surface of the front panel,

[0071] The lower oil collecting member extends along the width direction of the smoke collecting body. The lower oil collecting member is located below the front oil guiding member and is used for collecting the oil liquid condensed on the lower surface of the front oil guiding member. At least one side of the lower oil collecting member has a second oil outlet.

[0072] In a preferred embodiment, the projection of the oil screen or the oil screen support member on the horizontal plane at least partially coincides with the lower air suction port.

[0073] In a preferred embodiment, a flow channel with a preset spacing is provided between the side of the lower air suction opening and the side of the front panel, and the flow channel is used to enable the oil liquid above the lower air suction opening to flow along the inner surface of the front panel to the lower part of the lower air suction opening.

[0074] In a preferred embodiment, the lower air suction opening is provided in an open manner.

[0075] The present invention provides an oil fume extractor, which includes: a fan box and a smoke collecting body, and the top of the smoke collecting body is communicated with the fan box;

[0076] The front panel of the smoke collecting body has an upper air suction opening and a lower air suction opening which are arranged at intervals;

[0077] The smoke collecting body further has an air volume adjusting mechanism, and the air volume adjusting mechanism is close to or located at the lower air suction opening and is used to at least change the air volume entering the upper air suction opening;

[0078] The air volume adjusting mechanism can be switched among a fourth position, a fifth position, and a sixth position,

[0079] When the air volume adjusting mechanism is located at the fourth position, the lower air suction opening is closed,

[0080] When the air volume adjusting mechanism is located at the fifth position or the sixth position, the lower air suction opening is opened,

[0081] When the air volume adjusting mechanism is located at the fifth position, the air volume entering the upper air suction opening is a first air volume,

[0082] When the air volume adjusting mechanism is located at the sixth position, the air volume entering the upper air suction opening is a second air volume, and the second air volume is greater than the first air volume.

[0083] In a preferred embodiment, the oil fume extractor further includes an oil fume extractor controller, and the oil fume extractor controller is used to obtain a first signal, a second signal, and a third signal characterizing the fire power or the smoke concentration of the cooking appliance, and the fire power or the smoke concentration of the cooking appliance characterized by the first signal, the second signal, and the third signal increases in sequence.

[0084] In a preferred embodiment, if the oil fume extractor controller obtains the first signal, the air volume adjusting mechanism is made to be located at the fourth position;

[0085] If the oil fume extractor controller obtains the second signal, the air volume adjusting mechanism is made to be located at the fifth position;

[0086] If the oil fume extractor controller obtains the third signal, the air volume adjusting mechanism is made to be located at the sixth position.

[0087] In a preferred embodiment, a blower is provided inside the blower box.

[0088] If the range hood controller obtains the first signal, it controls the power of the blower to be the first power.

[0089] If the range hood controller obtains the second signal, it controls the power of the blower to be the second power.

[0090] If the range hood controller obtains the third signal, it controls the power of the blower to be the third power.

[0091] The first power, the second power, and the third power increase in sequence.

[0092] In a preferred embodiment, the upper air inlet is provided in an open manner.

[0093] The present invention provides a range hood, which includes a blower box and a smoke collecting body. The top of the smoke collecting body is communicated with the blower box.

[0094] The front panel of the smoke collecting body is provided with an upper air inlet and a lower air inlet which are arranged at intervals.

[0095] An air volume adjusting mechanism is arranged inside the smoke collecting body. In the height direction, the air volume adjusting mechanism is located between the upper air inlet and the lower air inlet. The air flow between the blower box and the lower air inlet flows through the air volume adjusting mechanism. The air volume adjusting mechanism is used to at least change the air volume entering the upper air inlet.

[0096] The air volume adjusting mechanism can switch between a seventh position, an eighth position, and a ninth position.

[0097] When the air volume adjusting mechanism is located at the seventh position, the air flow is blocked from flowing from the lower air inlet to the blower box.

[0098] When the air volume adjusting mechanism is located at the eighth position or the ninth position, the air flow can flow from the lower air inlet to the blower box.

[0099] When the air volume adjusting mechanism is located at the seventh position, the air volume entering the upper air inlet is the first air volume.

[0100] When the air volume adjusting mechanism is located at the eighth position, the air volume entering the upper air inlet is the second air volume, and the second air volume is greater than the first air volume.

[0101] In a preferred embodiment, both the upper air inlet and the lower air inlet are provided in an open manner.

[0102] The present invention provides an oil fume extractor, which includes: a fan box and a smoke collecting body, and the smoke collecting body is communicated with the fan box;

[0103] The front panel of the smoke collecting body has an upper air inlet and a lower air inlet which are arranged at intervals;

[0104] The smoke collecting body further has an air volume adjusting mechanism, which is close to or located at the upper air inlet and is used to at least change the air volume entering the upper air inlet;

[0105] The oil fume extractor further includes an oil fume extractor controller, which is used to obtain a first signal, a second signal, and a third signal characterizing the fire power or smoke concentration of a cooking stove, and the fire power or smoke concentration of the cooking stove characterized by the first signal, the second signal, and the third signal increases in sequence;

[0106] A fan is provided in the fan box, and the power of the fan includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence;

[0107] According to the first signal, the second signal or the third signal obtained by the oil fume extractor controller, the power of the fan is controlled to be the first power, the second power or the third power.

[0108] In an embodiment, if the oil fume extractor controller obtains the first signal, the power of the fan is controlled to be the first power;

[0109] If the oil fume extractor controller obtains the second signal, the power of the fan is controlled to be the second power;

[0110] If the oil fume extractor controller obtains the third signal, the power of the fan is controlled to be the third power.

[0111] In an embodiment, if the oil fume extractor controller obtains the first signal, the power of the fan is controlled to be the first power;

[0112] If the oil fume extractor controller obtains the second signal, the power of the fan is controlled to be the third power;

[0113] If the oil fume extractor controller obtains the third signal, the power of the fan is controlled to be the second power.

[0114] In an embodiment, if the oil fume extractor controller obtains the first signal, the power of the fan is controlled to be the first power;

[0115] If the oil fume extractor controller obtains the second signal, the power of the fan is controlled to be the second power;

[0116] If the range hood controller obtains the third signal, it controls the power of the fan to be the second power.

[0117] In one embodiment, if the range hood controller obtains the first signal, it controls the power of the fan to be the first power;

[0118] If the range hood controller obtains the second signal, it controls the power of the fan to be the third power;

[0119] If the range hood controller obtains the third signal, it controls the power of the fan to be the third power.

[0120] The present invention provides a stove and range hood system, including: a gas stove and the above-mentioned range hood,

[0121] The range hood has a range hood controller, and the gas stove has a gas stove controller,

[0122] The range hood controller communicates with the gas stove controller, is used to obtain the fire power level of the gas stove, and controls the air volume adjustment mechanism to switch between the first position, the second position, the third position, or between the fourth position, the fifth position, the sixth position, or between the seventh position, the eighth position, and the ninth position according to the fire power level of the gas stove.

[0123] In a preferred embodiment, the fire power of the gas stove includes a first fire power level, a second fire power level, and a third fire power level, the third fire power level is greater than the second fire power level, and the second fire power level is greater than the first fire power level;

[0124] When the fire power of the gas stove is at the first fire power level, the range hood controller can obtain the first signal and make the air volume adjustment mechanism located at the first position;

[0125] When the fire power of the gas stove is at the second fire power level, the range hood controller can obtain the second signal and make the air volume adjustment mechanism located at the second position or the fifth position or the eighth position;

[0126] When the fire power of the gas stove is at the third fire power level, the range hood controller can obtain the third signal and make the air volume adjustment mechanism located at the third position or the sixth position or the ninth position.

[0127] In a preferred embodiment, the gas stove has a cock valve and a cock valve position detection module, and the cock valve position detection module can detect the rotation angle of the cock valve,

[0128] The rotation angles include a first rotation angle, a second rotation angle, and a third rotation angle.

[0129] When the rotation angle is the first rotation angle, the gas stove has a first firepower level.

[0130] When the rotation angle is the second rotation angle, the gas stove has a second firepower level.

[0131] When the rotation angle is the third rotation angle, the gas stove has a third firepower level.

[0132] In a preferred embodiment, when the gas stove has the first firepower level, the range hood controller can obtain the first signal, causing the air volume adjustment mechanism to be in the first position and setting the power of the range hood blower to a first power.

[0133] When the gas stove has the second firepower level, the range hood controller can obtain the second signal, causing the air volume adjustment mechanism to be in the second position or the fifth position or the eighth position and setting the power of the range hood blower to a second power.

[0134] When the gas stove has the third firepower level, the range hood controller can obtain the third signal, causing the air volume adjustment mechanism to be in the third position or the sixth position or the ninth position and setting the power of the range hood blower to a third power.

[0135] The third power is greater than the second power, and the second power is greater than the first power.

[0136] The features and advantages of the present invention are:

[0137] The fan box provides suction power. Flue gas can enter the smoke collection body through the upper suction opening and the lower suction opening, and continue to flow towards the fan box. Under the action of the suction power provided by the fan box, the spaced upper suction opening and lower suction opening can cooperate with each other. The lower suction opening is close to the source of oil fume generation to draw and lift the un-diffused flue gas, and the upper suction opening is farther away from the oil fume source than the lower suction opening to gather the smoke to reduce the escape of flue gas. Moreover, both the upper suction opening and the lower suction opening are located on the front panel, and the suction directions generated by the upper suction opening and the lower suction opening are substantially parallel, realizing upper gathering and lower suction. In addition, the air volume adjustment mechanism can adjust the air volume entering the upper suction opening, and further adjust the ratio of the air volume entering the upper suction opening to the air volume entering the lower suction opening to adapt to the working state of the cooking appliance or the flue gas concentration state, giving full play to the effect of upper gathering and lower suction and optimizing the effect of sucking and exhausting flue gas. For example, when stir-frying, the firepower of the cooking appliance is very large, and the flue gas concentration is also very high. A large amount of flue gas rises rapidly. The air volume adjustment mechanism can be located at the third position to increase the air volume entering the upper suction opening, enhancing the smoke gathering effect. In some scenarios, efficient flue gas suction can be achieved without at least increasing the noise of the range hood. When steaming or boiling, the firepower of the cooking appliance is small, and the flue gas concentration is low. The air volume adjustment mechanism can be located at the second position, and the smoke gathering effect is relatively weakened. The lower suction opening can draw and absorb the flue gas before it diffuses, and a small part of the diffused flue gas is gathered and absorbed by the upper suction opening. In other scenarios, the effect of sucking and exhausting flue gas can be ensured without at least increasing the noise of the range hood. When the firepower is very small or the cooking appliance is not working, the flue gas concentration is very low or there is no flue gas concentration. The air volume adjustment mechanism can be located at the first position, and the upper suction opening is closed. Therefore, the range hood provided by the present invention can intelligently adjust the air volume at the upper suction opening according to different usage scenarios to balance the good oil fume suction effect and the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0138] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0139] Figure 1 An isometric view of an embodiment of the range hood provided by the present invention;

[0140] Figure 2 A front view of the range hood provided by the present invention with the smoke gathering plate removed;

[0141] Figure 3 A side view of the range hood provided by the present invention when the smoke gathering plate is at the second angle;

[0142] Figure 4Side view of the smoke collecting plate of the range hood provided by the present invention when it is at the third angle;

[0143] Figure 5 Axonometric view of another embodiment of the range hood provided by the present invention;

[0144] Figure 6 Cross-sectional view of another embodiment of the range hood provided by the present invention;

[0145] Figure 7 For Figure 6 Partial enlarged view of the position A in

[0146] Figure 8 Side view of the oil mesh support, front oil guide and oil cup in the range hood provided by the present invention;

[0147] Figure 9 Assembly schematic diagram of the oil mesh support, front oil guide, lower oil guide, front panel and oil cup in the range hood provided by the present invention;

[0148] Figure 10 Schematic diagram of the smoke stove system provided by the present invention;

[0149] Figure 11 Side view of another embodiment of the range hood provided by the present invention;

[0150] Figure 12 Cross-sectional view of another embodiment of the range hood provided by the present invention.

[0151] Explanation of the reference numerals in the drawings:

[0152] 1. Range hood; 10. Fan box; 11. Fan;

[0153] 20. Smoke collecting body; 201. Upper air suction port; 202. Lower air suction port;

[0154] 21. Front panel; 211. Deflector; 22. Rear panel;

[0155] 23. Left side plate; 24. Right side plate;

[0156] 25. Top panel; 26. Top light-emitting area;

[0157] 30. Air volume adjustment mechanism; 31. Smoke collecting plate; 32. First rotating plate; 33. Second rotating plate;

[0158] 41. Transverse cavity; 42. Longitudinal cavity;

[0159] 43. Protrusion; 431. Lower surface of the protrusion;

[0160] 50, Light-emitting area; 51, Preset pattern;

[0161] 2101, Inner surface of the front panel; 2102, Outer surface of the front panel; 2103, Side edge;

[0162] 2104, Preset spacing;

[0163] 61, Oil screen support; 62, Oil screen;

[0164] 70, Leading oil part;

[0165] 71, Front oil collecting part; 711, Oil collecting tank; 72, First oil outlet; 73, Gap;

[0166] 80, Lower oil collecting part; 81, Second oil outlet;

[0167] 82, Lower leading oil part; 821, Extension section;

[0168] 83, Condensation plate; 84, Oil cup;

[0169] 901, Width direction; 902, Front-back direction;

[0170] 90, Gas stove; 91, Cock valve; 92, Burner head. Detailed implementation mode

[0171] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0172] Solution 1

[0173] The present invention provides a range hood, as Figures 1-6 shown. The range hood includes: a blower box 10 and a smoke collecting body 20, and the smoke collecting body 20 is communicated with the blower box 10; the front panel 21 of the smoke collecting body 20 has an upper air suction opening 201 and a lower air suction opening 202 arranged at intervals; the smoke collecting body 20 also has an air volume adjusting mechanism 30, and the air volume adjusting mechanism 30 is close to or located at the upper air suction opening 201 for at least changing the air volume entering the upper air suction opening 201; the air volume adjusting mechanism 30 can switch between a first position, a second position and a third position.

[0174] When the air volume adjusting mechanism 30 is in the first position, the upper air suction opening 201 is closed.

[0175] When the air volume adjusting mechanism 30 is in the second position or the third position, the upper air suction opening 201 is opened.

[0176] When the air volume regulating mechanism 30 is in the second position, the air volume entering the upper air suction opening 201 is the first air volume.

[0177] When the air volume regulating mechanism 30 is in the third position, the air volume entering the upper air suction opening 201 is the second air volume, and the second air volume is greater than the first air volume.

[0178] The blower box 10 provides suction power. The flue gas can enter the smoke collecting body 20 through the upper air suction opening 201 and the lower air suction opening 202 and continue to flow towards the blower box 10. Under the action of the suction power provided by the blower box 10, the spaced upper air suction opening 201 and the lower air suction opening 202 can cooperate with each other. The lower air suction opening 202 is close to the source of oil fume generation to draw and lift the un-diffused flue gas, and the upper air suction opening 201 is farther away from the oil fume source than the lower air suction opening 202 to collect the flue gas to reduce flue gas escape; moreover, both the upper air suction opening 201 and the lower air suction opening 202 are located on the front panel 21, and the suction directions generated by the upper air suction opening 201 and the lower air suction opening 202 are substantially parallel, realizing upper collection and lower suction. Moreover, the air volume regulating mechanism 30 can adjust the air volume entering the upper air suction opening 201, and further adjust the ratio of the air volume entering the upper air suction opening 201 to the air volume entering the lower air suction opening 202 to adapt to the working state of the cooking appliance or the flue gas concentration state, giving full play to the effect of upper collection and lower suction and optimizing the effect of sucking and exhausting the flue gas. For example, when stir-frying, the firepower of the cooking appliance is very large, and the flue gas concentration is also very large, and a large amount of flue gas rises rapidly. The air volume regulating mechanism 30 can be located in the third position to increase the air volume entering the upper air suction opening 201, enhancing the effect of collecting the flue gas. In some scenarios, it can achieve efficient suction of the flue gas at least without increasing the noise of the range hood; when steaming, the firepower of the cooking appliance is small, and the flue gas concentration is small. The air volume regulating mechanism 30 can be located in the second position, and the effect of collecting the flue gas is relatively weakened. The lower air suction opening 202 can draw and absorb the flue gas before it diffuses, and a small part of the diffused flue gas is collected and absorbed by the upper air suction opening 201. In other scenarios, it can ensure the effect of sucking and exhausting the flue gas at least without increasing the noise of the range hood; when the firepower is very small or the cooking appliance is not working, the flue gas concentration is very small or there is no flue gas concentration. The air volume regulating mechanism 30 can be located in the first position, and the upper air suction opening 201 is closed. Therefore, the range hood provided by the present invention can intelligently adjust the air volume at the upper air suction opening 201 according to different usage scenarios to balance good oil fume suction effect and noise reduction effect.

[0179] In one embodiment, the range hood further includes a range hood controller configured to obtain a first signal, a second signal, and a third signal that represent the magnitude of the cooking fire or the magnitude of the flue gas concentration of the cooking appliance. The magnitude of the cooking fire or the flue gas concentration represented by the first signal, the second signal, and the third signal increases in sequence. By obtaining the magnitude of the cooking fire or the flue gas concentration of the cooking appliance, the position of the air volume adjustment mechanism 30 is controlled according to the magnitude of the cooking fire or the flue gas concentration, so as to achieve air following the fire or air following the smoke, and achieve the effect of intelligent smoke control.

[0180] The first signal, the second signal, and the third signal can represent the magnitude of the cooking fire, that is, the cooking fire when the range hood controller obtains the first signal is less than the cooking fire when the range hood controller obtains the second signal, and the cooking fire when the range hood controller obtains the second signal is less than the cooking fire when the range hood controller obtains the third signal. The magnitude of the cooking fire can be detected by a sensor. With reference to Figure 10 As shown, for example, when the cooking appliance is a gas stove 90, the gas stove 90 has a cock valve 91, and the magnitude of the cooking fire can be detected by a cock valve position detection module installed on the cock valve 91; or the cooking fire can be directly detected by a temperature sensor or a light sensor. Other means can also be used to detect the cooking fire, which is not limited herein.

[0181] The first signal, the second signal, and the third signal can also represent the magnitude of the flue gas concentration, that is, the flue gas concentration when the range hood controller obtains the first signal is less than the flue gas concentration when the range hood controller obtains the second signal, and the flue gas concentration when the range hood controller obtains the second signal is less than the flue gas concentration when the range hood controller obtains the third signal. The flue gas concentration can be detected by sensors such as gas sensors, or other means can also be used. The detection means of the flue gas concentration is not limited herein.

[0182] Further, if the range hood controller obtains the first signal, the air volume adjustment mechanism 30 is located at the first position; if the range hood controller obtains the second signal, the air volume adjustment mechanism 30 is located at the second position; if the range hood controller obtains the third signal, the air volume adjustment mechanism 30 is located at the third position. When the range hood controller obtains the first signal, the cooking fire or the flue gas concentration of the cooking appliance is very small or zero, and the air volume adjustment mechanism 30 is located at the first position, the upper air suction opening 201 is closed, and all the air volume enters the smoke collecting body 20 through the lower air suction opening 202. The lower air suction opening 202 has a strong ability to draw the flue gas, and it can rely only on the lower air suction opening 202 to complete the drawing and absorption of the flue gas before the flue gas diffuses; when the range hood controller obtains the second signal, the cooking fire or the flue gas concentration of the cooking appliance is small, and the air volume adjustment mechanism 30 is located at the second position, the upper air suction opening 201 is opened, and the lower air suction opening 202 can draw and absorb the flue gas before it diffuses. The flue gas that diffuses without being absorbed by the lower air suction opening 202 can be caught and absorbed by the upper air suction opening 201, ensuring the effect of sucking the flue gas; when the range hood controller obtains the third signal, the cooking fire or the flue gas concentration of the cooking appliance further increases, and the air volume adjustment mechanism 30 is located at the third position, increasing the proportion of the air volume entering the upper air suction opening 201 in the total air volume, enhancing the smoke catching effect, thereby preventing the diffused flue gas from escaping and realizing efficient flue gas suction. When the user is cooking, the user's face is generally relatively close to the upper air suction opening 201. When the cooking fire or the flue gas concentration is very high, there is usually a large amount of flue gas rising rapidly. The ability of the lower air suction opening 202 to draw the flue gas is limited. By increasing the proportion of the air volume entering the upper air suction opening 201 in the total air volume and enhancing the smoke catching ability of the upper air suction opening 201, the flue gas flowing towards the user's face can be effectively reduced, which is beneficial to reducing the interference of the flue gas to the user; moreover, since the smoke catching ability of the upper air suction opening 201 is strong enough, the power of the fan 11 can not be increased, or even the power of the fan 11 can be reduced, thereby reducing the noise on the premise of ensuring the effect of sucking the flue gas. This embodiment can adjust the position of the air volume adjustment mechanism 30 according to the cooking fire size or the flue gas concentration of the cooking appliance, adapt to different scenarios, and ensure that good flue gas suction effects are achieved in various scenarios.

[0183] The fan box 10 is equipped with a fan 11. In one embodiment, if the range hood controller obtains a first signal, it controls the power of the fan 11 to be the first power; if the range hood controller obtains a second signal, it controls the power of the fan 11 to be the second power; if the range hood controller obtains a third signal, it controls the power of the fan 11 to be the third power; the first power, the second power, and the third power increase in sequence. When the range hood controller obtains the first signal, the firepower or flue gas concentration of the cooking appliance is very small. The power of the fan 11 is controlled to be the first power, and the air volume regulating mechanism 30 is located at the first position. The upper air suction port 201 is closed, and all the air volume provided by the fan 11 enters the smoke collecting body 20 through the lower air suction port 202. The lower air suction port 202 has a strong ability to draw the flue gas. It can rely only on the lower air suction port 202 to complete the drawing and absorption of the flue gas before the flue gas diffuses. Moreover, the power of the fan 11 is very small or the fan stops, reducing the noise and being beneficial to energy conservation. The first power can be 0, in which case the fan 11 stops; the first power can also be a very small power.

[0184] When the range hood controller obtains the second signal, the firepower or flue gas concentration of the cooking appliance is relatively small. The air volume regulating mechanism 30 is located at the second position, and the fan 11 is controlled to operate at the second power. The air volume provided by the fan 11 increases. This not only enables the lower air suction port 202 to maintain a strong ability to draw the undiffused flue gas, but also allows the upper air suction port 201 to collect the diffused flue gas, ensuring the effect of drawing and collecting the flue gas and keeping the noise at a relatively low level.

[0185] When the range hood controller obtains the third signal, the firepower or flue gas concentration of the cooking appliance further increases, and a large amount of flue gas rises rapidly. The fan 11 is controlled to operate at the third power, further increasing the total air volume provided by the fan 11. At the same time, the air volume regulating mechanism 30 is located at the third position, greatly increasing the air volume entering the upper air suction port 201, enhancing the effect of collecting the flue gas, and preventing the diffused flue gas from escaping, achieving efficient drawing and collection of the flue gas. When the user is stir-frying, the firepower or flue gas concentration of the cooking appliance is very large. The fan 11 operates at the third power, and the air volume regulating mechanism 30 is located at the third position, which can ensure the effect of drawing and collecting the flue gas. Considering that the escape of oil fume during stir-frying is the most influential factor on the user's health, the present invention intelligently coordinates the fan 11 and the air volume regulating mechanism 30 to simultaneously improve the ability of the range hood to draw and collect the flue gas, thereby greatly reducing the escape of the flue gas and being beneficial to protecting the user's health.

[0186] This embodiment can adjust the power of the fan 11 and the position of the air volume regulating mechanism 30 according to the firepower or flue gas concentration of the cooking appliance. When the total air volume is relatively large, it increases the proportion of the air volume entering the upper air suction port 201 in the total air volume. When the total air volume is relatively small, it increases the proportion of the air volume entering the lower air suction port 202 in the total air volume, giving full play to the effect of collecting from above and drawing from below, ensuring the effect of flue gas suction, adapting to various scenarios, and achieving intelligent control of tobacco and energy conservation and noise reduction.

[0187] In another embodiment, if the range hood controller obtains the first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains the second signal, it controls the power of the blower 11 to be the third power; if the range hood controller obtains the third signal, it controls the power of the blower 11 to be the second power; the first power, the second power, and the third power increase in sequence.

[0188] When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration of the stove is small, so that the air volume regulating mechanism 30 is located at the second position. However, considering that it takes time for the air volume regulating mechanism 30 to switch from the first position or the third position to the second position, in order to prevent flue gas from escaping during the switching process of the air volume regulating mechanism 30, the blower 11 is controlled to operate at the third power during the switching process of the air volume regulating mechanism 30, so as to increase the total air volume entering the upper air suction port 201 and the lower air suction port 202, so that both the upper air suction port 201 and the lower air suction port 202 have a strong ability to extract and inhale flue gas during the switching process of the air volume regulating mechanism 30, thereby ensuring that the amount of escaped oil fume is small.

[0189] When the range hood controller obtains the third signal, the air volume regulating mechanism 30 is located at the third position, and the proportion of the air volume entering the upper air suction port 201 in the total air volume is increased. The upper air suction port 201 can generate a relatively strong fume gathering effect. Due to different user cooking habits or ingredients, in some cases, by controlling the blower 11 to operate at the second power, the requirement of extracting and inhaling flue gas can be met. In this case, by controlling the blower 11 to operate at the second power and making the air volume regulating mechanism 30 located at the third position, both the effect of extracting and inhaling flue gas can be guaranteed, the energy consumption can be reduced, and the noise can be kept at a low level.

[0190] The power of the blower 11 includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence. In another embodiment, if the range hood controller obtains a first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains a second signal, it controls the power of the blower 11 to be the second power; if the range hood controller obtains a third signal, it controls the power of the blower 11 to be the second power. When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration is small, so that the air volume regulating mechanism 30 is located at the second position, controls the blower 11 to operate at the second power, and the lower air suction opening 202 maintains a strong ability to draw the flue gas. At the same time, the upper air suction opening 201 can gather the diffused flue gas, ensuring the effect of sucking the flue gas and ensuring that the noise is in a relatively small state. When the range hood controller obtains the third signal, it preferentially regulates the air volume regulating mechanism 30, which will make the air volume regulating mechanism 30 located at the third position, increasing the proportion of the air volume entering the upper air suction opening 201 in the total air volume. By enhancing the flue gas gathering ability of the upper air suction opening 201, the effect of sucking the flue gas by this range hood is improved. When the blower 11 operates at the second power and the total air volume does not increase, it can meet the requirements of sucking the flue gas, which is beneficial to reducing power consumption and noise. When the effect of sucking the flue gas still cannot meet the requirements, the power of the blower can be increased further.

[0191] The power of the blower 11 includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence. In another embodiment, if the range hood controller obtains a first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains a second signal, it controls the power of the blower 11 to be the third power; if the range hood controller obtains a third signal, it controls the power of the blower 11 to be the third power. When the range hood controller obtains the second signal and the third signal, the blower 11 operates at the third power, ensuring sufficient total air volume, which is beneficial to ensuring the effect of sucking the flue gas and preventing the flue gas from escaping.

[0192] In one embodiment, the smoke collecting body 20 is a thin smoke collecting body, such as Figures 2-4As shown, the thin smoke collecting body has a front panel 21 and a rear panel 22 that are oppositely arranged and have a distance not exceeding a first preset interval distance. The thin smoke collecting body also has a left side panel 23 and a right side panel 24 that are oppositely arranged and have a distance not less than a second preset interval distance. The front panel 21 is connected to both the left side panel 23 and the right side panel 24, and the rear panel 22 is connected to both the left side panel 23 and the right side panel 24. The distance between the front panel 21 and the rear panel 22 does not exceed the first preset interval distance, making the overall thickness of the thin smoke collecting body smaller, facilitating installation and being more aesthetically pleasing. The distance between the left side panel 23 and the right side panel 24 is not less than the second preset interval distance, making the distance between the left side panel 23 and the right side panel 24 large enough, that is, the size of the thin smoke collecting body in the left-right direction is large enough, so that the flow cross-section for the flue gas to flow upward in the smoke collecting body 20 is large enough, and the coverage range of the smoke collecting body 20 in the left-right direction is increased, so that the range hood can generate a strong ability to extract and smoke flue gas when the overall thickness of the smoke collecting body 20 is small. Preferably, the first preset interval distance is between 40 mm and 160 mm, that is, the first preset interval distance can be any value between 40 mm and 160 mm. For example, the first preset interval distance can be 40 mm, 42 mm, 50 mm, 60 mm, 65 mm, 80 mm, 100 mm, 120 mm, 151 mm or 160 mm, etc. The second preset interval distance is between 890 mm and 900 mm, that is, the second preset interval distance can be any value between 890 mm and 900 mm. For example, the second preset interval distance can be 890 mm, 891 mm, 896 mm, 898 mm or 900 mm, etc.

[0193] The first preset interval distance is the minimum distance between the front panel 21 and the rear panel 22. When the front panel 21 tilts forward from bottom to top, the minimum distance between the front panel 21 and the rear panel 22 is at the bottom.

[0194] In an embodiment, the distance between the top of the front panel 21 and the top of the rear panel 22 of the thin smoke collecting body is not less than twice the distance between the bottom of the front panel 21 and the bottom of the rear panel 22 of the thin smoke collecting body. By making the top of the thin smoke collecting body have sufficient thickness, it is beneficial to ensure that the top of the inner cavity of the thin smoke collecting body has a sufficiently large smoke flow cross-section, which is beneficial to ensuring the ability of the upper suction opening 201 to suck in smoke; and, reducing the thickness of the bottom of the thin smoke collecting body is beneficial to reducing the overall size of the smoke collecting body, achieving an ultra-thin effect on the premise of ensuring the effect of sucking in smoke, and reducing the sense of depression brought to users. In an embodiment, the distance between the top of the front panel 21 and the top of the rear panel 22 of the thin smoke collecting body is not greater than three times the distance between the bottom of the front panel 21 and the bottom of the rear panel 22 of the thin smoke collecting body, ensuring that the bottom of the inner cavity of the thin smoke collecting body also has a sufficiently large smoke flow cross-section, so that the smoke entering the lower suction opening 202 can flow smoothly upward, ensuring the ability of the lower suction opening 202 to suck in smoke. Preferably, the distance between the top of the front panel 21 and the top of the rear panel 22 of the thin smoke collecting body is not less than twice the distance between the bottom of the front panel 21 and the bottom of the rear panel 22 of the thin smoke collecting body, and, the distance between the top of the front panel 21 and the top of the rear panel 22 of the thin smoke collecting body is not greater than three times the distance between the bottom of the front panel 21 and the bottom of the rear panel 22 of the thin smoke collecting body. For example: the thickness of the top of the thin smoke collecting body is 2 times, 2.3 times, 2.7 times or 3 times the thickness of the bottom of the thin smoke collecting body.

[0195] Furthermore, the distance between the bottom of the front panel and the bottom of the rear panel of the thin smoke collecting body is 50 mm - 60 mm. Even though the thickness of the bottom of the thin smoke collecting body is relatively thin, at the same time, the distance between the bottom of the front panel and the bottom of the rear panel of the thin smoke collecting body is limited to not less than 50 mm, avoiding the distance between the bottom of the front panel and the bottom of the rear panel from being too small, ensuring that the bottom of the inner cavity of the thin smoke collecting body has a sufficiently large flow cross-section, so as to ensure that the smoke entering the lower suction opening 202 can flow smoothly to the blower box 10. Furthermore, the distance between the top of the front panel and the top of the rear panel of the thin smoke collecting body is 120 mm - 140 mm, ensuring that the smoke entering the thin smoke collecting body from the upper suction opening 201 and the lower suction opening 202 can flow smoothly to the blower box 10, achieving the effect that the range hood can not only ensure the effect of sucking in smoke, but also achieve an ultra-thin effect, reducing the sense of depression brought to users by the top of the thin smoke collecting body.

[0196] Further, the front panel 21 of the thin smoke collecting body is an inclined panel at a preset angle with the vertical direction, where the preset angle is not greater than 20° and not less than 8°. The upper air suction opening 201 and the lower air suction opening 202 are arranged on the inclined panel, ensuring that there are sufficiently large flow cross-sections for the flue gas to flow upward at the top and bottom of the inner cavity of the thin smoke collecting body. Moreover, when the flue gas moves upward, it gradually diffuses. As shown in Figure 1 and Figure 10 , the upper air suction opening 201 is located in the upper front of the lower air suction opening 202. The upper air suction opening 201 can gather the diffused flue gas, and the air volume regulating mechanism 30 adjusts the air volume entering the upper air suction opening 201 according to the size of the firepower or the concentration of the flue gas, which is beneficial to ensuring the effect of smoking the flue gas.

[0197] In an embodiment, the area S of the lower air suction opening 202 下 satisfies: S 下 ≤f, and f ≤ 0.05 m². The reduction of the area of the lower air suction opening 202 is beneficial to increasing the pulling force of the lower air suction opening 202. By making the area S of the lower air suction opening 202 下 not greater than f, it can achieve that under the condition that the air volume entering the lower air suction opening 202 remains unchanged, the lower air suction opening 202 can generate a relatively large pulling force, which is beneficial to pulling the undiffused flue gas near the stove top.

[0198] Further, the total area of the front panel 21 of the smoke collecting body 20 is S, and the ratio of S 下 / S is not greater than 0.15. On the one hand, it enables the lower air suction opening 202 to generate a relatively large pulling force. On the other hand, it enables the upper air suction opening 201 and the part of the front panel 21 between the upper air suction opening 201 and the lower air suction opening 202 to have a relatively large area, which is beneficial to the upper air suction opening 201 to gather the flue gas, and the front panel 21 between the upper air suction opening 201 and the lower air suction opening 202 to guide the rising flue gas, prompting the rising flue gas to be inhaled by the upper air suction opening 201, giving full play to the effect of gathering from above and sucking from below, and reducing the escape of the flue gas.

[0199] Further, the area S of the upper air suction opening 201 上 satisfies: S 上 ≥h; h ≥ 0.07 m² and / or h is greater than f, which is beneficial to enabling the upper air suction opening 201 to have a sufficient area to gather the diffused flue gas in order to reduce the escape of the flue gas.

[0200] In an embodiment, the total area of the front panel 21 of the smoke collecting body 20 is S, and the area S of the upper air suction opening 201 上 satisfies: S 上 / S is not less than 0.2, making the upper air suction opening 201 have a relatively large area, which is beneficial to the upper air suction opening 201 to gather the flue gas and ensure that the flue gas rising along the front panel 21 is inhaled by the upper air suction opening 201.

[0201] Further, the upper edge of the upper air inlet 201 is close to or located at the top of the front panel 21, and the lower edge of the lower air inlet 202 is close to or located at the bottom of the front panel 21. The front panel 21 further has a flow guide plate 211. Along the flow direction of the flue gas, the flow guide plate 211 is arranged between the lower air inlet 202 and the upper air inlet 201, so that the position of the lower air inlet 202 is lower, facilitating the early extraction of the rising flue gas, and being conducive to the lower air inlet 202 concentrating and guiding the flue gas before the flue gas diffuses; the position of the upper air inlet 201 is higher, enabling the flow guide plate 211 to have a high enough height to facilitate the diversion of the rising flue gas, being conducive to the upper air inlet 201 collecting the diffused flue gas, giving full play to the effect of upper collection and lower extraction, and reducing the escape of flue gas.

[0202] Furthermore, the area of the flow guide plate 211 is S 导 , and the total area of the front panel 21 of the smoke collecting body 20 is S. The ratio of S 导 / S is not less than 0.3 and not greater than 0.65, which can not only ensure that the flow guide plate 211 has enough area to divert the rising flue gas, but also reserve enough area on the front panel 21 to set the upper air inlet 201, being conducive to ensuring the smoke collection effect of the upper air inlet 201.

[0203] The structural form of the air volume adjustment mechanism 30 can be various. For example: the air volume adjustment mechanism 30 includes a baffle arranged at the upper air inlet 201. The baffle is arranged on the inner side or the outer side of the front panel 21, and the baffle can move along the front panel 21 to block part or all of the upper air inlet 201, so as to realize the regulation of the air volume entering the upper air inlet 201. The specific direction of the baffle moving along the front panel 21 can be moving up and down in the plane where the front panel 21 is located, or moving left and right in the plane where the front panel 21 is located, or a combination of the up-down direction and the left-right direction. As another embodiment, the air volume adjustment mechanism 30 includes a valve plate arranged at the upper air inlet 201. The valve plate can rotate in the upper air inlet 201. When the valve plate rotates to be parallel to the extension direction of the upper air inlet 201, the air volume entering the upper air inlet 201 is the largest; when the valve plate rotates to form an acute angle with the extension direction of the upper air inlet 201, the air volume entering the upper air inlet 201 decreases; when the valve plate rotates to fit the edge of the upper air inlet 201, the upper air inlet 201 is closed.

[0204] The position and specific form of the air volume adjustment mechanism 30 in the first solution are not limited. For example: the air volume adjustment mechanism 30 can be an inner turning plate arranged in the cavity of the smoke collecting body 20, or a smoke collecting plate arranged outside the cavity of the smoke collecting body 20, or a valve plate arranged at the upper air inlet 201.

[0205] In an embodiment, as Figure 1As shown, the air volume regulating mechanism 30 is the smoke collecting plate 31, and the smoke collecting plate 31 is rotatably connected to the smoke collecting body 20 in the up and down direction. The smoke collecting plate 31 can block part or all of the upper air suction opening 201 to change the air inlet area of the upper air suction opening 201, so as to realize the regulation of the air volume entering the upper air suction opening 201 by switching the smoke collecting plate 31 to different positions; moreover, the smoke collecting plate 31 can block the rising smoke, and has the effect of collecting smoke by itself, guiding the smoke flow to the upper air suction opening 201.

[0206] When the smoke collecting plate 31 is in the first position, the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 is the first angle. At this time, the smoke collecting plate 31 completely covers the upper air suction opening 201, and the upper air suction opening 201 is closed. The first angle can be equal to 0 or close to 0. When the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 is the first angle, the smoke collecting plate 31 fits with the front panel 21, thus closing the upper air suction opening 201.

[0207] When the smoke collecting plate 31 is in the second position, the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 is the second angle. When the smoke collecting plate 31 is in the third position, the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 is the third angle. The first angle is less than the second angle, and the second angle is less than the third angle. The rising smoke flows to the upper air suction opening 201 through the space between the smoke collecting plate 31 and the front panel 21. When the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 increases, the space between the smoke collecting plate 31 and the front panel 21 also increases, so that the air volume entering between the upper air suction openings 201 increases; moreover, when the angle between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 increases, the area of the projection of the smoke collecting plate 31 in the up and down direction also increases, that is, the smoke collecting area of the smoke collecting plate 31 also increases accordingly.

[0208] In one embodiment, as Figure 3 shown, when the smoke collecting plate 31 is in the second position, the angle M between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 satisfies: 40°≤M≤50°, so that part of the air volume enters through the upper air suction opening 201, and part of the air volume enters through the lower air suction opening 202. It is beneficial that in the scenario where the cooking fire or the smoke concentration of the cooking appliance is small, the lower air suction opening 202 can suck and absorb the smoke before it diffuses, and the smoke that is not absorbed by the lower air suction opening 202 and diffuses can be trapped and absorbed by the upper air suction opening 201, ensuring the effect of sucking and exhausting the smoke.

[0209] In one embodiment, as Figure 4As shown, when the smoke collecting plate 31 is in the third position, the angle N between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 satisfies: 55° ≤ N ≤ 65°. This increases the proportion of the air volume entering the upper air suction opening 201 in the total air volume and the smoke collecting area, which is beneficial to enhancing the smoke collecting ability of the upper air suction opening 201 in the scenario where a large amount of smoke rises rapidly, avoiding the escape of the diffused smoke, and achieving efficient smoke extraction.

[0210] Further, when the smoke collecting plate 31 is in the second position, the angle M between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 satisfies: 40° ≤ M ≤ 50°. And when the smoke collecting plate 31 is in the third position, the angle N between the smoke collecting plate 31 and the front panel 21 of the smoke collecting body 20 satisfies: 55° ≤ N ≤ 65°. This ensures that the range hood can adapt to various scenarios, achieve intelligent smoke control, and has a good effect of sucking oil fume in different situations of the fire power or smoke concentration of different cooktops.

[0211] As Figure 10 shown, during cooking, the smoke moves upward from the burner 92 and the cookware on the burner 92. In one embodiment, when the smoke collecting plate 31 is in the third position, the area of the projection of the smoke collecting plate 31 on the burner 92 is not less than 2 / 5 of the area of the burner 92, so that when projected in the up-down direction, the smoke collecting plate 31 and the burner 92 have a large enough overlapping area, which is beneficial for the smoke collecting plate 31 to block the rising smoke. And under the action of the suction force of the upper air suction opening 201, an air flow is generated on the lower side of the smoke collecting plate 31 towards the upper air suction opening 201, and the air flow carries the smoke into the upper air suction opening 201, which is beneficial to generating a good smoke collecting effect.

[0212] Further, when the smoke collecting plate 31 is in the third position, the area of the projection of the smoke collecting plate 31 on the burner 92 is not greater than 2 / 3 of the area of the burner 92. During cooking, the cookware is placed on the burner 92. When the user stir-fries the food in the cookware, the distance between the user and the cookware is usually within a certain range, that is, the distance between the user and the burner 92 is usually within a certain range. By limiting the area of the projection of the smoke collecting plate 31 on the burner 92 to be not greater than 2 / 3 of the area of the burner 92, it can be avoided that the distance between the user and the smoke collecting plate 31 is too close, thereby avoiding the user's head from bumping into the smoke collecting plate 31 and reducing the sense of depression brought by the smoke collecting plate to the user.

[0213] In one embodiment, the lower air suction opening 202 is open. Since the process of the air volume adjusting mechanism 30 switching from the first position to the second position or the third position takes time, that is, the process of the upper air suction opening 201 switching from closed to open and increasing the air volume both take time. By setting the lower air suction opening 202 to be open, the smoke can be sucked through the lower air suction opening 202 during the switching process, reducing the escape of smoke during the process of the air volume adjusting mechanism 30 switching positions.

[0214] In one embodiment, the smoke collecting body 20 is a thin smoke collecting body. The thin smoke collecting body has a front panel 21 and a back panel 22 that are oppositely arranged and have a distance not exceeding a first preset interval, and a left side panel 23 and a right side panel 24 that are oppositely arranged and have a distance not less than a second preset interval. The front panel 21 is connected to both the left side panel 23 and the right side panel 24, and the back panel 22 is connected to both the left side panel 23 and the right side panel 24. As Figure 1 shown, the smoke collecting body 20 further has a top panel 25. The top panel 25 is connected to the left side panel 23, the right side panel 24, the front panel 21, and the back panel 22. The top panel 25 has an extending portion that extends out of the front panel 21. The extending portion is provided with a top light-emitting area 26 for downward illumination. The light generated by the top light-emitting area 26 irradiates downward, which can illuminate the cooking range so that the user can clearly see the state of the food in the cooking utensil when cooking.

[0215] As Figure 3 and Figure 4 shown, the smoke collecting plate 31 is located below the top light-emitting area 26 and can block the smoke. Further, when the smoke collecting plate 31 is in the third position, the projected area of the smoke collecting plate 31 on the top light-emitting area 26 is not less than 2 / 3 of the area of the top light-emitting area 26, so that when projected in the up-down direction, the smoke collecting plate 31 and the top light-emitting area 26 have a sufficiently large overlapping area to effectively prevent the smoke from moving towards the top light-emitting area 26 and avoid the top light-emitting area 26 being polluted by the smoke.

[0216] Further, when the smoke collecting plate 31 is in the third position, the projected area of the smoke collecting plate 31 on the top light-emitting area 26 is not greater than 4 / 5 of the area of the top light-emitting area 26 to ensure that there is enough light not blocked by the smoke collecting plate 31 and can propagate downward to the cooking range, so as to prevent the top light-emitting area 26 from being polluted by the smoke and also take into account the lighting effect.

[0217] In another embodiment, as Figure 5 shown, the smoke collecting body 20 includes a horizontally extending transverse cavity 41 and a vertically extending longitudinal cavity 42 that are connected. The longitudinal cavity 42 is located below the transverse cavity 41; the transverse cavity 41 has a protruding portion 43 that protrudes from the front panel 21 of the longitudinal cavity 42. The lower surface 431 of the protruding portion has a light-emitting area 50 that can form a preset pattern 51; the range hood or the smoke collecting body 20 has a reflector, and the position of the reflector at least includes a reflection position. When the reflector is in the reflection position, at least part of the reflector is located below the protruding portion 43 to reflect the preset pattern 51 formed by the light-emitting area 50.

[0218] When the user is in front of the smoke collecting body 20 during cooking, the light emitted from the light-emitting area 50 on the lower surface 431 of the protruding part can form a preset pattern 51. The preset pattern 51 can be a graph with a preset shape after patterning the light emitted by the light-emitting element. For example, the light of the light-emitting element passes through the screen printing layer to form a graph, similar to a picture that wants to be shown to the user; the preset pattern 51 can also be formed by changing the light-emitting element. For example, the light-emitting element itself is made into a preset shape, and the light emitted by the light-emitting element forms the preset pattern 51. The light emitted from the light-emitting area 50 propagates downward and can be reflected by the smoke collecting plate 31 located at the reflection position and then transmitted to the user, so that the user can see the preset pattern 51 on the smoke collecting plate 31. The preset pattern 51 can create an atmosphere on the smoke collecting plate 31. The preset atmosphere pattern formed by the light-emitting area 50 and the like is presented to the user through the smoke collecting plate 31, which is convenient for creating a lighting atmosphere in front of the user's field of vision and is beneficial to preventing depression.

[0219] The setting position of the reflector is explained as follows:

[0220] In different embodiments, the reflector can be arranged on the range hood or the smoke collecting body 20. When the reflector is arranged on the range hood, the reflector can be arranged on the blower box 10 or other components of the range hood. For example, one end of the reflector is installed on the blower box 10, and at least part of the reflector can extend below the transverse cavity 41 and in front of the front panel 21, and can reflect the light emitted from the light-emitting area 50. One end of the reflector can be fixed to the blower box 10 or can be rotatably installed on the blower box 10.

[0221] When the reflector is arranged on the smoke collecting body 20, the reflector can be arranged in the transverse cavity 41 or the longitudinal cavity 42. For example, one end of the reflector can be installed on the transverse cavity 41 through the installation structure, and one end of the reflector can also be installed on the longitudinal cavity 42. The specific position of the reflector is not limited.

[0222] When the reflector is arranged in the transverse cavity 41, in one embodiment, the reflector can be arranged close to the transverse cavity 41 or be a part of the transverse cavity 41 or be arranged at an angle with the transverse cavity 41, and / or the reflector can move downward into the space below the transverse cavity 41 and move to the reflection position. Specifically, the reflector is rotatably arranged in the transverse cavity 41. For example, the reflector can rotate from the transverse cavity 41 to the longitudinal cavity 42 and rotate to the reflection position. More specifically, the upper end of the reflector can be rotatably connected to the transverse cavity 41 through a rotating shaft, and the rotating shaft is installed in the transverse cavity 41. When the reflector is in the initial position, the reflector is close to the transverse cavity 41 or is a part of the transverse cavity 41, and the reflector can rotate around the rotating shaft from the initial position to the reflection position.

[0223] When the reflector is disposed in the longitudinal cavity 42, in one embodiment, the reflector can be at least a part of the front panel 21 of the longitudinal cavity 42 and can move away from the front panel 21 to the reflection position. For example, the reflector can have two positions. When the reflector is in one position, the reflector can form the front panel 21 of the longitudinal cavity 42, and the reflector can also move away from the longitudinal cavity 42 from the aforementioned position to the reflection position. In another embodiment, the reflector can also be disposed close to the longitudinal cavity 42 or at an angle with the longitudinal cavity 42. When the reflector is disposed close to the longitudinal cavity 42, specifically, one end of the reflector can be rotatably mounted on the front panel 21 or other components of the smoke collecting body 20; when the reflector is disposed at an angle with the longitudinal cavity 42, one end of the reflector can be rotatably mounted on the front panel 21 or other components of the smoke collecting body 20, or can be fixed at the reflection position.

[0224] Further, the air volume adjusting mechanism 30 is the smoke collecting plate 31, and the smoke collecting plate 31 is rotatably connected to the smoke collecting body 20 up and down; the reflector is the smoke collecting plate 31; the reflection position includes the second position or the third position; the smoke collecting plate 31 has opposite inner and outer surfaces, and the inner surface is closer to the upper suction port 201 than the outer surface. When the smoke collecting plate 31 is in the reflection position, the inner surface is used for collecting smoke, and the outer surface is used for reflecting the preset pattern 51 formed by the light emitting area 50.

[0225] On the one hand, the smoke collecting plate 31 plays a role in collecting smoke and guides the oil fume to the upper suction port 201; on the other hand, as a reflector, the user can see the preset pattern 51 on its outer surface. That is to say, there is no need to separately provide an additional reflector, and the outer surface of the smoke collecting plate 31 of the range hood can be reused as a reflector. On the basis of ensuring the oil fume suction effect through the smoke collecting plate 31, the reflection of the preset pattern 51 such as the atmosphere pattern is skillfully realized. In order to realize smoke collection, the smoke collecting plate 31 extends forward relative to the smoke collecting body 20, which is relatively abrupt for the user's perception. By emitting the preset pattern 51 from the light emitting area 50 to the smoke collecting plate 31, an atmosphere with a certain visual depth is created, which is beneficial to improving the depressing perception of the abrupt setting of the smoke collecting plate 31 to the user. When the smoke collecting plate 31 is in the reflection position, the upper surface of the smoke collecting plate 31 is its outer surface, and the lower surface of the smoke collecting plate 31 is its inner surface.

[0226] The light emitting area 50 in the present invention can form a preset pattern 51, which is different from the illuminating lamp. The light of the light emitting element of the illuminating lamp is not formed by patterning processing and can only play a role in illumination.

[0227] In one embodiment, a light-emitting element is disposed in the lateral cavity 41, and the protruding portion 43 has a preset pattern layer. Along the light propagation direction, the light emitted by the light-emitting element passes through the preset pattern layer and forms a light-emitting area 50 with a preset pattern 51 on the lower surface 431 of the protruding portion. The preset pattern layer is preset with a light-transmitting area having a pattern, so that part of the light emitted by the light-emitting element is blocked by the preset pattern layer, and part of the light can pass through the preset pattern layer, so that the light emitted by the light-emitting area 50 forms the preset pattern 51. The preset pattern layer can be preset with a light-transmitting area having a pattern by means of silk-screen printing, color spraying or film sticking, etc., so that the light emitted by the light-emitting area 50 forms the preset pattern 51. The preset pattern layer includes a silk-screen printing layer and / or a color spraying layer and / or a film sticking layer. Specifically, the preset pattern layer can include one of a silk-screen printing layer, a color spraying layer, and a film sticking layer. The preset pattern layer can also be a combination of at least two of a silk-screen printing layer, a color spraying layer, and a film sticking layer.

[0228] In one embodiment, a light-emitting element is disposed in the lateral cavity 41, and the protruding portion 43 has a preset pattern layer. The preset pattern layer is provided with a plurality of spaced-apart light point light-transmitting areas and / or a plurality of light spot light-transmitting areas and / or a plurality of light segment light-transmitting areas, and the preset pattern 51 is a plurality of spaced-apart light points and / or a plurality of light spots and / or a plurality of light segments. After the light emitted by the light-emitting element passes through the light point light-transmitting area, light points can be formed; after the light emitted by the light-emitting element passes through the light spot light-transmitting area, light spots can be formed; after the light emitted by the light-emitting element passes through the light segment light-transmitting area, light segments can be formed. The cooperation of the plurality of light points and / or the plurality of light spots and / or the plurality of light segments can form a preset pattern 51 with a sense of atmosphere. For example, light points or light spots of different sizes can form a depth of field and create a sense of atmosphere with a certain visual depth.

[0229] In another embodiment, a light-emitting element with a preset pattern 51 is disposed in the lateral cavity 41, and the light emitted by the light-emitting element with the preset pattern 51 forms the preset pattern 51 in the light-emitting area 50. For example, the light-emitting element can include one or more lamps. A single lamp can have a preset shape, or a plurality of lamps are combined to form the preset pattern 51. For example, a plurality of point light sources are disposed in the lateral cavity 41, and these lamps together form the preset pattern 51, and the light emitted by these lamps just forms in the light-emitting area 50. In a specific embodiment, the preset pattern 51 is a cloud, and a plurality of lamps are distributed in a cloud shape, so as to form a cloud pattern in the light-emitting area 50.

[0230] In one embodiment, the light emitting element itself can display the preset pattern 51, for example, the light emitting element can be a digital tube, which is used to display the preset pattern 51. The preset pattern 51 can include numbers, which can reflect the working status information such as the air volume or time of the range hood. The light emitting element can also be a whole display screen, specifically an LED display screen or a liquid crystal display screen, etc. The display screen can display patterns, videos or texts, etc., and the content displayed on the display screen can be displayed after being reflected by a reflector.

[0231] In one embodiment, if Figures 6-9 As shown, an oil net support 61 and an oil net 62 mounted on the oil net support 61 are provided in the cavity of the smoke collector 20, and the oil net 62 is located on the rear side of the upper air intake port 201; a front oil guide member 70 is also provided in the cavity of the smoke collector 20, which is at least partially located on the front side of the oil net 62, and the upper end of the front oil guide member 70 is connected to the oil net support 61 and is located below the oil net 62, and the front oil guide member 70 is inclined forward and downward from the upper end to guide the oil filtered on the front side of the oil net 62 to the inner surface of the front panel 21.

[0232] The oil smoke sucked in by the upper air intake 201 flows through the oil net 62, and the oil net 62 accumulates oil. The oil on the oil net 62 flows to the oil net support 61 and flows downward. The oil on the front of the oil net 62 can flow to the front oil guide 70 and flow downward along the front oil guide 70. Since the front oil guide 70 tilts forward and downward from the upper end of the front oil guide 70, the oil is guided to flow forward to the inner surface 2101 of the front panel, so as to collect and process the oil, avoid the oil on the front side of the oil net 62 and the oil net support 61 from dripping directly, thereby reducing the oil dripping from the lower air intake 202. Take the scenario where the user uses cleaning liquid to clean the range hood as an example. When the user cleans, the droplets and cleaning liquid on the oil net 62 and the oil net support 61 can be reliably guided to the inner surface 2101 of the front panel by the front oil guide 70, thereby reducing the risk of dripping from the lower air intake 202. The range hood reduces the cleaning difficulty for users and is conducive to improving the user experience.

[0233] by Figure 8 Taking the direction shown as an example, the left direction of the front-to-back direction 902 is forward, and the right direction of the front-to-back direction 902 is backward. The inner surface herein refers to the surface located inside the smoke collector 20 or facing the inside of the smoke collector 20, and the outer surface herein refers to the surface away from the smoke collector 20 or located outside the smoke collector 20.

[0234] Further, the lower end of the front oil guiding member 70 is provided with a front oil collecting member 71. The front oil collecting member 71 extends along the width direction 901 of the smoke collecting body 20, and at least one side of the front oil collecting member 71 is provided with a first oil outlet 72. Through the front oil collecting member 71, the oil liquid is guided to flow along the width direction 901, so that the oil liquid flows to both ends or one end of the width direction 901, so that the oil liquid can flow downward from the side part or the area near the side part, so as to avoid the lower air suction port 202. Since the lower air suction port 202 is generally arranged in the middle, the first oil outlet 72 is arranged on at least one side of the front oil collecting member 71, which is convenient for guiding the oil liquid to the side part, and the oil liquid can be guided through the side wall of the range hood or through the channel between the side wall of the lower air suction port 202 and the side wall of the range hood, reducing the risk of the oil liquid dripping from the lower air suction port 202.

[0235] The front oil collecting member 71 can be an oil collecting tank 711. At least one end of the oil collecting tank 711 is provided with an opening or a hole, and the opening or the hole serves as the first oil outlet 72. The oil liquid flowing into the oil collecting tank 711 flows along the oil collecting tank 711, so as to be guided to the end of the width direction 901 of the smoke collecting body 20 and flow out through the first oil outlet 72. The oil collecting tank 711 collects the oil liquid, which can play a buffering role, so that the oil liquid flows to at least one side after buffering, avoiding the oil liquid splashing caused by direct guiding. Especially when the user uses a cleaning liquid to clean, a large amount of cleaning liquid is avoided from splashing along with the oil liquid. Specifically, the oil collecting tank 711 can generally extend along the width direction 901 of the smoke collecting body 20.

[0236] Further, as Figure 7 shown, the oil collecting tank 711 is bent from the front oil guiding member 70 in a direction away from the lower air suction port 202. The oil liquid can directly flow into the oil collecting tank 711 along the upper surface of the front oil guiding member 70. Moreover, the oil collecting tank 711 and the front oil guiding member 70 are of an integral structure, which is beneficial to reducing the assembly process and saving costs.

[0237] The oil collecting tank 711 can also be of a non-integral structure with the front oil guiding member 70. For example: the oil collecting tank 711 and the front oil guiding member 70 are of a split structure, the oil collecting tank 711 is arranged below the lower end of the front oil guiding member 70, and the position can be fixed through the front panel 21 or other components. The oil liquid on the front oil guiding member 70 can fall into the oil collecting tank 711 after dripping from its lower end.

[0238] In an embodiment, the front oil collecting member 71 is connected to the inner surface 2101 of the front panel. After the oil liquid on the front oil collecting member 71 flows out from the first oil outlet 72, it can flow to the inner surface 2101 of the front panel and flow downward along the inner surface 2101 of the front panel, which is beneficial to making the oil liquid flow more smoothly and stably, and avoiding the oil liquid from dripping and splashing after flowing out from the first oil outlet 72.

[0239] The front oil collecting member 71 is in contact with the inner surface 2101 of the front panel. Specifically, it can be that the front oil collecting member 71 is in direct contact with the inner surface 2101 of the front panel, so that the oil flowing out of the first oil outlet 72 can flow to the inner surface 2101 of the front panel. However, the front oil collecting member 71 and the front panel 21 can be fixedly connected through a fixing structure, or no fixing structure can be provided; or, the front oil collecting member 71 is not in direct contact with the inner surface 2101 of the front panel, and a small gap 73 can be provided between the two or they can be connected through other connecting members, as long as the oil flowing out of the first oil outlet 72 can flow to the inner surface 2101 of the front panel.

[0240] In another embodiment, there is a gap 73 between the front oil collecting member 71 and the inner surface 2101 of the front panel. When the gap 73 is large, the oil flowing out of the first oil outlet 72 may not pass through the inner surface 2101 of the front panel. For example, the oil flowing out of the first oil outlet 72 can directly drip into the oil cup 84 below; or, it can be guided to the oil cup 84 through other guiding members. When the gap 73 is large, the oil flowing out of the first oil outlet 72 can also flow to the inner surface 2101 of the front panel after passing through other guiding members.

[0241] When the gap 73 is small, after the oil flows out of the first oil outlet 72, it can drip a short distance and then fall onto the inner surface 2101 of the front panel, and continue to flow downward along the inner surface 2101 of the front panel. Or, by setting other guiding members, the oil flowing out of the first oil outlet 72 can be guided to the inner surface 2101 of the front panel.

[0242] There is a gap 73 between the front oil collecting member 71 and the inner surface 2101 of the front panel, so that during assembly, it is not necessary to ensure that the front oil collecting member 71 is in contact with the inner surface 2101 of the front panel, thereby reducing the assembly precision requirements, being beneficial to reducing the assembly difficulty and saving costs.

[0243] The structural form of the front oil collecting member 71 is not limited to the oil collecting groove 711. For example, the front oil collecting member 71 includes a guiding convex portion provided on the inner surface 2101 of the front panel. The guiding convex portion is located below the lower end of the front guiding member 70. The guiding convex portion extends as a whole along the width direction 901 of the smoke collecting body 20, and, while the guiding convex portion extends from one end to the other end of the width direction 901 of the smoke collecting body 20, it slopes downward, or, while the guiding convex portion extends from the middle to both ends, it slopes downward. The lower end of the guiding convex portion serves as the first oil outlet 72. The oil on the front guiding member 70 drips onto the upper surface of the guiding convex portion after falling from its lower end, and flows along the guiding convex portion towards the end of the width direction 901 of the smoke collecting body 20, so as to guide the oil to flow downward from the side or the area near the side, thereby avoiding the lower air suction port 202.

[0244] In another embodiment, the lower end of the leading oil member 70 is in contact with the inner surface 2101 of the front panel. The lower end of the leading oil member 70 and the inner surface 2101 of the front panel jointly enclose an oil collecting tank 711. At least one side of the oil collecting tank 711 has a first oil outlet 72. The oil collecting tank 711 generally extends along the width direction 901 of the smoke collecting body 20. The oil liquid on the upper surface of the leading oil member 70 flows to the lower end of the leading oil member 70, that is, enters the oil collecting tank 711. The oil collecting tank 711 guides the oil liquid to flow towards the end of the smoke collecting body 20 in the width direction 901. In this embodiment, the lower end of the leading oil member 70 does not need to be bent, reducing the manufacturing difficulty of the leading oil member 70.

[0245] Preferably, the lower end of the leading oil member 70 is in direct contact with the inner surface 2101 of the front panel. The lower end of the leading oil member 70 and the front panel 21 can be fixedly connected through a fixing structure, or no fixing structure is provided.

[0246] In an embodiment, a lower oil collecting member 80 is provided on the inner surface of the front panel 21. The lower oil collecting member 80 extends along the width direction 901 of the smoke collecting body 20. The lower oil collecting member 80 is located below the leading oil member 70 and is used to collect the oil liquid condensed on the lower surface of the leading oil member 70. At least one side of the lower oil collecting member 80 has a second oil outlet 81. The leading oil member 70 slopes forward and downward from the upper end of the leading oil member 70. During the process that the oil fume inhaled by the lower air inlet 202 flows upward, it will contact the lower surface of the leading oil member 70 and condense, resulting in the accumulation of oil liquid on the lower surface of the leading oil member 70. If the oil liquid on the lower surface of the leading oil member 70 drips directly, it may drip onto the lower air inlet 202, affecting the user experience. In this embodiment, after the oil liquid on the lower surface of the leading oil member 70 leaves the leading oil member 70, it can enter the lower oil collecting member 80. The lower oil collecting member 80 guides the oil liquid to flow along the width direction 901 of the smoke collecting body 20. After the oil liquid flows out from the second oil outlet 81, it can flow downward from the area near the end of the smoke collecting body 20 in the width direction 901, so as to avoid the lower air inlet 202.

[0247] Further, the lower end of the leading oil member 70 is in contact with the inner surface 2101 of the front panel or the lower end of the leading oil member 70 is arranged close to the inner surface 2101 of the front panel. The oil liquid condensed on the lower surface of the leading oil member 70 can flow into the lower oil collecting member 80 through the inner surface 2101 of the front panel. In this way, the oil liquid flowing along the lower surface of the leading oil member 70 to the lower end of the leading oil member 70, after leaving the leading oil member 70, flows along the inner surface 2101 of the front panel, which can reduce the dripping of the oil liquid from the lower end of the leading oil member 70 and make the flow of the oil liquid smoother.

[0248] The lower end of the leading oil member 70 is close to the inner surface 2101 of the front panel. Specifically, there is a small gap 73 between the lower end of the leading oil member 70 and the inner surface 2101 of the front panel. Due to the small gap 73, the oil flowing out of the lower end of the leading oil member 70 can flow to the inner surface 2101 of the front panel.

[0249] As Figure 9 shown, the lower oil collecting member 80 extends along the width direction 901 of the smoke collecting body 20 and simultaneously extends a certain distance along the front-rear direction 902 of the smoke collecting body 20 to receive the oil dripping from the lower surface of the leading oil member 70 or flowing downward along the inner surface 2101 of the front panel. Preferably, the lower oil collecting member 80 is in contact with the inner surface 2101 of the front panel. The lower oil collecting member 80 can be in a groove shape itself or jointly form a groove with the inner surface 2101 of the front panel.

[0250] In one embodiment, the lower oil collecting member 80 extends downward along the inner surface 2101 of the front panel to the upper end of the lower air suction port 202, and at the upper end of the lower air suction port 202, it extends downward and into the interior of the smoke collecting body 20 to form a lower oil guiding member 82. After the oil on the front panel 21 flows to the upper end of the lower air suction port 202, it can flow into the interior of the smoke collecting body 20 along the lower oil guiding member 82 to guide the oil into the interior of the smoke collecting body 20 and prevent the oil on the front panel 21 from directly dripping from the lower air suction port 202. The lower oil guiding member 82 and the lower oil collecting member 80 are of an integral structure, which can reduce the assembly process and save costs. Specifically, as Figure 7 shown, the lower oil guiding member 82 includes an extending section 821, and the extending section 821 extends downward and into the interior of the smoke collecting body 20.

[0251] In one embodiment, the projection of the oil net 62 or the oil net support member 61 on the horizontal plane at least partially coincides with the lower air suction port 202. Since it is a thin smoke collecting body, the distance in the front-rear direction 902 between the upper air suction port 201 and the lower air suction port 202 is relatively small. The oil net 62 is located behind the upper air suction port 201, and there is a certain distance between the oil net 62 and the upper air suction port 201 to ensure sufficient filtration of the oil fume. And the distance between the two is small to make the oil net 62 close to the upper air suction port 201 to ensure timely filtration of the oil fume at the upper air suction port 201. Therefore, there is often an overlapping area between the oil net 62 and the lower air suction port 202, and the oil is likely to directly drip out of the range hood at the overlapping area. By implementing the leading oil member 70 in the embodiment, the oil in the overlapping area can be effectively guided.

[0252] In one embodiment, as Figure 9As shown in the figure, a flow channel with a preset spacing 2104 is provided between the side of the lower air inlet 202 and the side 2103 of the front panel 21. The flow channel enables the oil liquid above the lower air inlet 202 to flow along the inner surface of the front panel 21 to the lower part of the lower air inlet 202. Since the lower air inlet 202 mainly functions to draw, the opening area cannot be too large. In this embodiment, a spacing is preset between the side of the lower air inlet 202 and the side of at least one side of the front panel 21 in the width direction 901 to reduce the opening area of the lower air inlet 202 and ensure that the lower air inlet 202 has sufficient suction force. At the same time, the preset spacing 2104 is also cleverly utilized as a flow channel for the oil liquid.

[0253] Since the lower air inlet 202 mainly functions to draw, the opening area cannot be too large. In this embodiment, a spacing is preset between the side 2103 of the lower air inlet 202 and the side 2103 of at least one side of the front panel 21 in the width direction 901 to reduce the opening area of the lower air inlet 202 and ensure that the lower air inlet 202 has sufficient suction force. At the same time, the preset spacing 2104 is also cleverly utilized as a flow channel for the oil liquid.

[0254] The front oil collecting member 71 guides the oil liquid to the end of the smoke collecting body 20 in the width direction 901. The preset spacing 2104 is located at the end of the smoke collecting body 20 in the width direction 901. The inner surface 2101 of the front panel at the preset spacing 2104 allows the oil liquid to flow downward, so as to ensure that the oil fume can continuously flow downward along the inner surface 2101 of the front panel to avoid the lower air inlet 202, thereby preventing the oil liquid from dripping from the upper edge of the lower air inlet 202.

[0255] Specifically, the width of the lower air inlet 202 is smaller than the width of the front panel 21, so that a preset spacing 2104 exists between the lower air inlet 202 and the side 2103 of the front panel 21. As Figure 9 shown, along the width direction 901, at least one end of the front oil collecting member 71 extends to the outside of the lower air inlet 202, and at least one end of the lower oil collecting member 80 also extends to the outside of the lower air inlet 202, so that both the first oil outlet 72 and the second oil outlet 81 are located outside the lower air inlet 202, thereby ensuring that the oil liquid flowing out from the first oil outlet 72 and the second oil outlet 81 can avoid the lower air inlet 202 during the downward flow process.

[0256] In one embodiment, a condensate plate 83 is provided at the lower end of the lower air suction opening 202 and extends obliquely upward into the interior of the smoke collecting body 20. The lower end of the condensate plate 83 is located above the oil cup 84, and the lower oil guiding member 82 and the condensate plate 83 at least partially overlap in the horizontal plane projection. The oil droplets dripping from the lower end of the lower oil guiding member 82 first fall onto the condensate plate 83 and then flow along the condensate plate 83 to the oil cup 84, which is beneficial to the smooth and stable flow of the oil liquid into the oil cup 84. In this embodiment, the vertical projection of the lower end of the lower oil guiding member 82 does not have to coincide with the oil cup 84.

[0257] Solution Two

[0258] The present invention provides a range hood, which includes: a fan box 10 and a smoke collecting body 20, and the top of the smoke collecting body 20 is connected to the fan box 10; the front panel 21 of the smoke collecting body 20 has an upper air suction opening 201 and a lower air suction opening 202 arranged at intervals; the smoke collecting body 20 further has an air volume adjusting mechanism 30, and the air volume adjusting mechanism 30 is close to or located at the lower air suction opening 202 and is used to at least change the air volume entering the upper air suction opening 201; the air volume adjusting mechanism 30 can switch between a fourth position, a fifth position, and a sixth position.

[0259] When the air volume adjusting mechanism 30 is in the fourth position, the lower air suction opening 202 is closed.

[0260] When the air volume adjusting mechanism 30 is in the fifth position or the sixth position, the lower air suction opening 202 is opened.

[0261] When the air volume adjusting mechanism 30 is in the fifth position, the air volume entering the upper air suction opening 201 is the first air volume.

[0262] When the air volume adjusting mechanism 30 is in the sixth position, the air volume entering the upper air suction opening 201 is the second air volume, and the second air volume is greater than the first air volume.

[0263] Different from Solution 1, the air volume regulating mechanism 30 in this solution is close to or located at the lower air suction opening 202, and can directly regulate the air volume entering the lower air suction opening 202. Since the blower box 10 determines the sum of the air volume entering the upper air suction opening 201 and the air volume entering the lower air suction opening 202, therefore, when the air volume entering the lower air suction opening 202 changes, the air volume entering the upper air suction opening 201 will also change accordingly, that is: when the air volume entering the lower air suction opening 202 increases, the air volume entering the upper air suction opening 201 will decrease; when the air volume entering the lower air suction opening 202 decreases, the air volume entering the upper air suction opening 201 will increase. Thus, the control of the air volume entering the upper air suction opening 201 and the ratio of the air volume entering the upper air suction opening 201 to the air volume entering the lower air suction opening 202 is realized, so as to adapt to the working state of the cooking appliance and the flue gas concentration state, and optimize the effect of the upper air suction opening 201 and the lower air suction opening 202 cooperating with each other to extract and smoke the flue gas. For example: when stir-frying, the firepower of the cooking appliance is very large, and the flue gas concentration is also very large. A large amount of flue gas rises rapidly, and the suction capacity of the lower air suction opening 202 is limited. The air volume regulating mechanism 30 can be located at the sixth position to give priority to ensuring the air volume entering the upper air suction opening 201, realizing efficient extraction and smoking of the flue gas. And considering that the user's face is generally relatively close to the upper air suction opening 201 during cooking, by enhancing the ability of the upper air suction opening 201 to extract and smoke the flue gas, the flow of the flue gas towards the user's face can be reduced, which is beneficial to reducing the interference of the flue gas to the user; when steaming, the flue gas concentration is small, and the rising speed of the flue gas is also small. The air volume regulating mechanism 30 can be located at the fifth position to give priority to ensuring the suction capacity of the lower air suction opening 202. The air intake effect of the upper air suction opening 201 can be relatively reduced. The lower air suction opening 202 can extract and absorb the flue gas before it diffuses, and then the diffused flue gas is absorbed by the upper air suction opening 201, thus ensuring the effect of extracting and smoking the flue gas; when the flue gas concentration is very small, there is no need to extract and smoke the oil fume. The air volume regulating mechanism 30 can be located at the fourth position, and the lower air suction opening 202 is closed, and the upper air suction opening 201 is relied on to extract and smoke the flue gas.

[0264] In an embodiment, the range hood further includes a range hood controller, which is used to obtain a first signal, a second signal, and a third signal characterizing the firepower or flue gas concentration of the cooking appliance, and the firepower or flue gas concentration of the cooking appliance characterized by the first signal, the second signal, and the third signal increases in sequence. The method for the range hood controller to obtain signals and control the air volume regulating mechanism 30 according to the obtained signals has been introduced above, and will not be elaborated here.

[0265] Further, if the range hood controller obtains the first signal, the air volume regulating mechanism 30 is located at the fourth position; if the range hood controller obtains the second signal, the air volume regulating mechanism 30 is located at the fifth position; if the range hood controller obtains the third signal, the air volume regulating mechanism 30 is located at the sixth position. When the range hood controller obtains the first signal, the cooking fire or the flue gas concentration is very small or zero, and the air volume regulating mechanism 30 is located at the fourth position. All the air volume passes through the upper air suction port 201 into the smoke collecting body 20. The upper air suction port 201 can generate a strong suction effect on the flue gas, which can ensure the effect of sucking the flue gas; when the range hood controller obtains the second signal, the cooking fire or the flue gas concentration is relatively small, and the rising speed of the flue gas is also relatively small. The air volume regulating mechanism 30 is located at the fifth position, and the lower air suction port 202 is opened. The lower air suction port 202 can suck and absorb the flue gas before it diffuses. The flue gas that diffuses without being absorbed by the lower air suction port 202 can be absorbed by the upper air suction port 201, ensuring the effect of sucking the flue gas; when the range hood controller obtains the third signal, the cooking fire or the flue gas concentration further increases, and a large amount of flue gas rises rapidly. The air volume regulating mechanism 30 is located at the sixth position, increasing the proportion of the air volume entering the upper air suction port 201 in the total air volume, and giving priority to ensuring the air volume entering the upper air suction port 201 to reduce the escape of the diffused flue gas and achieve efficient flue gas suction. This embodiment can adjust the position of the air volume regulating mechanism 30 according to the size of the cooking fire or the flue gas concentration, adapt to different scenarios, and ensure that good flue gas suction effects are achieved in various scenarios.

[0266] There is a blower 11 in the blower box 10. In one embodiment, if the range hood controller obtains the first signal, the power of the blower 11 is controlled to be the first power; if the range hood controller obtains the second signal, the power of the blower 11 is controlled to be the second power; if the range hood controller obtains the third signal, the power of the blower 11 is controlled to be the third power; the first power, the second power, and the third power increase in sequence.

[0267] When the range hood controller obtains the first signal, the cooking fire or the flue gas concentration is very small or zero. The power of the blower 11 is controlled to be the first power, and the air volume regulating mechanism 30 is located at the fourth position. All the air volume provided by the blower 11 passes through the upper air suction port 201 into the smoke collecting body 20. The upper air suction port 201 sucks the flue gas. Since the cooking fire or the flue gas concentration is very small or zero, the effect of sucking the flue gas can be ensured, and the power of the blower 11 is relatively low, reducing the noise and being beneficial to energy saving.

[0268] When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration is small, causing the air volume adjustment mechanism 30 to be located at the fifth position, controlling the fan 11 to operate at the second power, and the air volume provided by the fan 11 increases. This not only enables the lower air suction opening 202 to maintain a strong ability to draw the undiffused flue gas, but also allows the diffused flue gas to be inhaled into the smoke collecting body 20 by the upper air suction opening 201, ensuring the effect of smoke extraction and keeping the noise at a relatively low level.

[0269] When the range hood controller obtains the third signal, the cooking fire or the flue gas concentration further increases, and a large amount of flue gas rises rapidly. The fan 11 is controlled to operate at the third power to further increase the total air volume provided by the fan 11. At the same time, the air volume adjustment mechanism 30 is located at the sixth position, greatly increasing the air volume entering the upper air suction opening 201 and preventing the diffused flue gas from escaping, achieving efficient smoke extraction. When the user is stir-frying, the cooking fire or the flue gas concentration is very high, and the fan 11 operates at the third power, with the air volume adjustment mechanism 30 located at the sixth position, which can ensure the effect of smoke extraction. Moreover, since the user frequently stirs during stir-frying and the sounds of spatulas and the like are relatively loud, the user's sensitivity to noise is relatively low at this time. Although the fan 11 operates at the third power and the noise is relatively high, the impact on the user is relatively small.

[0270] This embodiment can adjust the power of the fan 11 and the position of the air volume adjustment mechanism 30 according to the size of the cooking fire or the flue gas concentration. When the total air volume is relatively large, it increases the proportion of the air volume entering the upper air suction opening 201 in the total air volume. When the total air volume is relatively small, it increases the proportion of the air volume entering the lower air suction opening 202 in the total air volume, ensuring the effect of smoke suction, adapting to various scenarios, and achieving intelligent smoke control and energy conservation and noise reduction.

[0271] In one embodiment, as Figure 11 shown, the air volume adjustment mechanism 30 includes a first rotating plate 32. The first rotating plate 32 is rotatably connected to the smoke collecting body 20 in the up-and-down direction. The first rotating plate 32 can partially or completely block the lower air suction opening 202 to change the air inlet area of the lower air suction opening 202, thereby realizing the regulation of the air volume entering the lower air suction opening 202 by switching the first rotating plate 32 to different positions. When the air volume adjustment mechanism 30 is located at the fourth position, the first rotating plate 32 completely covers the lower air suction opening 202, and the lower air suction opening 202 is closed. When the air volume adjustment mechanism 30 is located at the fifth or sixth position, the first rotating plate 32 forms a certain angle with the front panel 21 of the smoke collecting body 20, and the rising flue gas flows to the lower air suction opening 202 through the space between the first rotating plate 32 and the front panel 21. When the angle between the first rotating plate 32 and the front panel 21 of the smoke collecting body 20 increases, the space between the first rotating plate 32 and the front panel 21 also increases, thereby increasing the air volume entering the lower air suction opening 202. Correspondingly, the air volume entering the upper air suction opening 201 decreases.

[0272] The structural form of the air volume regulating mechanism 30 can also have various types. For example, the air volume regulating mechanism 30 includes a baffle plate disposed at the lower air inlet 202. The baffle plate is disposed inside or outside the front panel 21. The baffle plate can move along the front panel 21 to block part or all of the lower air inlet 202, so as to realize the regulation of the air volume entering the lower air inlet 202. The specific direction of the baffle plate moving along the front panel 21 can be moving up and down in the plane where the front panel 21 is located, or moving left and right in the plane where the front panel 21 is located, or a combination of the up and down direction and the left and right direction. As another embodiment, the air volume regulating mechanism 30 can also include a valve plate disposed at the lower air inlet 202. The valve plate can rotate in the lower air inlet 202. When the valve plate rotates to be parallel to the extending direction of the lower air inlet 202, the air volume entering the lower air inlet 202 is the largest; when the valve plate rotates to form an acute angle with the extending direction of the lower air inlet 202, the air volume entering the lower air inlet 202 decreases; when the valve plate rotates to fit with the edge of the lower air inlet 202, the lower air inlet 202 is closed.

[0273] In one embodiment, the upper air inlet 201 is provided in an open manner. Since the process of the air volume regulating mechanism 30 switching from the fourth position to the fifth position or the sixth position requires time, that is, the process of the lower air inlet 202 switching from closed to open and increasing the air volume both require time. By providing the upper air inlet 201 in an open manner, during the switching process, the flue gas can be sucked through the upper air inlet 201, reducing the escape of flue gas during the process of the air volume regulating mechanism switching positions.

[0274] Solution Three

[0275] The present invention provides a range hood, which includes: a blower box 10 and a smoke collecting body 20. The top of the smoke collecting body 20 is communicated with the blower box 10; the front panel 21 of the smoke collecting body 20 has an upper air inlet 201 and a lower air inlet 202 arranged at intervals; an air volume regulating mechanism 30 is arranged inside the smoke collecting body 20. In the height direction, the air volume regulating mechanism 30 is located between the upper air inlet 201 and the lower air inlet 202. The air flow between the blower box 10 and the lower air inlet 202 flows through the air volume regulating mechanism 30. The air volume regulating mechanism 30 is used to at least change the air volume entering the upper air inlet 201; the air volume regulating mechanism 30 can switch between a seventh position, an eighth position, and a ninth position.

[0276] When the air volume regulating mechanism 30 is located at the seventh position, the air flow is blocked from flowing from the lower air inlet 202 to the blower box 10.

[0277] When the air volume regulating mechanism 30 is located at the eighth position or the ninth position, the air flow can flow from the lower air inlet 202 to the blower box 10.

[0278] When the air volume regulating mechanism 30 is located at the seventh position, the air volume entering the upper air inlet 201 is the first air volume.

[0279] When the air volume adjustment mechanism 30 is in the eighth position, the air volume entering the upper air suction port 201 is the second air volume, and the second air volume is greater than the first air volume.

[0280] Different from the first solution, in this solution, the air volume adjustment mechanism 30 is located between the upper air suction port 201 and the lower air suction port 202. The air flow between the blower box 10 and the lower air suction port 202 flows through the air volume adjustment mechanism 30, and the air volume entering the lower air suction port 202 can be directly adjusted.

[0281] Since the blower box 10 determines the sum of the air volume entering the upper air suction port 201 and the air volume entering the lower air suction port 202, therefore, when the air volume entering the lower air suction port 202 changes, the air volume entering the upper air suction port 201 will also change accordingly, that is: when the air volume entering the lower air suction port 202 increases, the air volume entering the upper air suction port 201 will decrease; when the air volume entering the lower air suction port 202 decreases, the air volume entering the upper air suction port 201 will increase. Thus, the air volume entering the upper air suction port 201 and the ratio of the air volume entering the upper air suction port 201 to the air volume entering the lower air suction port 202 can be controlled to adapt to the working state of the cooking appliance and the flue gas concentration state, and the effect of the upper air suction port 201 and the lower air suction port 202 cooperating with each other to extract and inhale the flue gas is optimized.

[0282] For example: when stir-frying, the cooking appliance has a large firepower and a large flue gas concentration, and a large amount of flue gas rises rapidly. The suction capacity of the lower air suction port 202 is limited. The air volume adjustment mechanism 30 can be located in the ninth position to give priority to ensuring the air volume entering the upper air suction port 201 and achieve efficient extraction and inhalation of flue gas; when steaming, the flue gas concentration is small and the rising speed of the flue gas is also small. The air volume adjustment mechanism 30 can be located in the eighth position to give priority to ensuring the suction capacity of the lower air suction port 202. The air intake volume of the upper air suction port 201 is relatively reduced. The lower air suction port 202 can extract and absorb the flue gas before it diffuses, and then the diffused flue gas is absorbed by the upper air suction port 201, thereby ensuring the effect of extracting and inhaling the flue gas; when the flue gas concentration is very small, there is no need to extract the oil fume. The air volume adjustment mechanism 30 can be located in the seventh position, the lower air suction port 202 is closed, and the upper air suction port 201 is relied on to extract and inhale the flue gas.

[0283] In one embodiment, as Figure 12As shown in the figure, the air volume regulating mechanism 30 includes a second rotating plate 33. The second rotating plate 33 is arranged in the cavity of the smoke collecting body 20 and is located in the air flow channel flowing from the lower air suction port 202 to the blower box 10. The second rotating plate 33 can block part or all of the air flow channel flowing from the lower air suction port 202 to the blower box 10. The second rotating plate 33 can rotate up and down, so as to realize the regulation of the air volume entering the lower air suction port 202 by switching the second rotating plate 33 to different positions. When the air volume regulating mechanism 30 is in the seventh position, the second rotating plate 33 completely covers the air flow channel flowing from the lower air suction port 202 to the blower box 10, and the air flow is blocked from flowing from the lower air suction port 202 to the blower box 10. When the air volume regulating mechanism 30 is in the eighth position or the ninth position, the air flow can flow from the lower air suction port 202 to the blower box 10, and by adjusting the angle of the second rotating plate 33, the air volume between the air entering the lower air suction port 202 can be adjusted, and the air volume between the air entering the upper air suction port 201 can be adjusted accordingly.

[0284] There can be various structural forms of the air volume regulating mechanism 30. For example: the air volume regulating mechanism 30 includes a valve plate arranged in the smoke collecting body 20. The valve plate is located between the upper air suction port 201 and the lower air suction port 202. The air flow between the blower box 10 and the lower air suction port 202 flows through the valve plate. The valve plate can block the air flow flowing from the lower air suction port 202 to the blower box 10, so as to regulate the air volume flowing from the lower air suction port 202 to the blower box 10 and realize the direct regulation of the air volume entering the lower air suction port 202. The valve plate can rotate. When the valve plate rotates to be substantially parallel to the air flow direction flowing from the lower air suction port 202 to the blower box 10, the air volume entering the lower air suction port 202 is the largest; when the valve plate rotates to completely block the air flow channel flowing from the lower air suction port 202 to the blower box 10, the lower air suction port 202 is closed. In another embodiment, the air volume regulating mechanism 30 includes a smoke flow through hole and a valve arranged in the smoke collecting body 20. The air flow between the blower box 10 and the lower air suction port 202 flows through the smoke flow through hole. The valve is installed in the smoke flow through hole and can control the size of the flow through cross section of the smoke flow through hole, so as to realize the direct regulation of the air volume entering the lower air suction port 202.

[0285] In one embodiment, both the upper air suction port 201 and the lower air suction port 202 are open. On the one hand, during the process of the air volume regulating mechanism 30 switching from the seventh position to the eighth position or the ninth position, the smoke can be sucked through the upper air suction port 201, so that the range hood starts to suck the smoke immediately after the blower is turned on, reducing the escape of smoke during the process of the air volume regulating mechanism switching positions; on the other hand, both the upper air suction port 201 and the lower air suction port 202 are open, which is beneficial to reducing the sense of depression brought to the user by the front of the range hood in terms of visual perception.

[0286] Solution Four

[0287] The present invention provides an oil fume extractor, as Figures 1-4 and Figure 10 shown. The oil fume extractor includes: a blower box 10 and a smoke collecting body 20, and the smoke collecting body 20 is communicated with the blower box 10; the front panel 21 of the smoke collecting body 20 has an upper air suction opening 201 and a lower air suction opening 202 which are arranged at intervals; the smoke collecting body 20 further has an air volume adjusting mechanism 30, and the air volume adjusting mechanism 30 is close to or located at the upper air suction opening 201 for at least changing the air volume entering the upper air suction opening 201; the oil fume extractor further includes an oil fume extractor controller, and the oil fume extractor controller is used for obtaining a first signal, a second signal and a third signal which characterize the fire power or the smoke concentration of the cooking appliance, and the fire power or the smoke concentration of the cooking appliance characterized by the first signal, the second signal and the third signal increases in sequence; a blower 11 is arranged in the blower box 10, and the power of the blower 11 includes a first power, a second power and a third power, and the first power, the second power and the third power increase in sequence; according to the first signal, the second signal or the third signal obtained by the oil fume extractor controller, the power of the blower 11 is controlled to be the first power, the second power or the third power.

[0288] Under the action of the suction power provided by the blower box 10, the upper air suction opening 201 and the lower air suction opening 202 which are arranged at intervals can cooperate with each other. The lower air suction opening 202 is close to the source of oil fume generation to draw and lift the un-diffused smoke, and the upper air suction opening 201 is farther away from the oil fume source than the lower air suction opening 202 to gather the smoke to reduce the escape of smoke; moreover, both the upper air suction opening 201 and the lower air suction opening 202 are located on the front panel 21, and the suction directions generated by the upper air suction opening 201 and the lower air suction opening 202 are substantially parallel, so as to realize upper gathering and lower suction. Moreover, the air volume adjusting mechanism 30 can adjust the air volume entering the upper air suction opening 201, and further adjust the ratio of the air volume entering the upper air suction opening 201 to the air volume entering the lower air suction opening 202 to adapt to the working state or the smoke concentration state of the cooking appliance, so as to fully exert the effect of upper gathering and lower suction and optimize the effect of extracting and sucking the smoke. Moreover, according to the fire power or the smoke concentration of the cooking appliance, the power of the blower 11 is controlled, which can not only ensure the effect of extracting and sucking the smoke in different scenarios, but also is beneficial to reducing the power of the blower 11 on the premise of ensuring the effect of extracting and sucking the smoke, which is beneficial to energy conservation, reducing energy consumption and reducing noise.

[0289] In one embodiment, if the range hood controller obtains the first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains the second signal, it controls the power of the blower 11 to be the second power; if the range hood controller obtains the third signal, it controls the power of the blower 11 to be the third power. When the range hood controller obtains the first signal, the cooking fire or the flue gas concentration of the cooking appliance is very small. By controlling the power of the blower 11 to be the first power, the power of the blower 11 is very small or the blower stops, which can reduce the noise and is beneficial to energy conservation while ensuring the effect of sucking and exhausting flue gas. When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration of the cooking appliance is relatively small. By controlling the blower 11 to operate at the second power, the air volume provided by the blower 11 increases, ensuring the effect of sucking and exhausting flue gas and keeping the noise at a relatively low level. When the range hood controller obtains the third signal, the cooking fire or the flue gas concentration of the cooking appliance further increases, and a large amount of flue gas rises rapidly. By controlling the blower 11 to operate at the third power, the total air volume provided by the blower 11 is further increased, enhancing the ability of the range hood to suck and exhaust flue gas and preventing flue gas from escaping. This embodiment can adjust the power of the blower 11 according to the size of the cooking fire or the flue gas concentration of the cooking appliance, give full play to the effect of upward collection and downward suction, ensure the effect of flue gas suction, adapt to various scenarios, and achieve intelligent smoke control, energy conservation, noise reduction.

[0290] In another embodiment, if the range hood controller obtains the first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains the second signal, it controls the power of the blower 11 to be the third power; if the range hood controller obtains the third signal, it controls the power of the blower 11 to be the second power. When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration of the cooking appliance is relatively small. By controlling the blower 11 to operate at the third power, the total air volume entering the upper suction port 201 and the lower suction port 202 is increased, so that both the upper suction port 201 and the lower suction port 202 have a strong ability to suck and exhaust flue gas, thereby ensuring a small amount of oil fume escape. When the range hood controller obtains the third signal, due to different cooking habits or ingredients of users, in some cases, by controlling the blower 11 to operate at the second power, it can not only meet the requirements of sucking and exhausting flue gas, but also reduce energy consumption and keep the noise at a relatively low level.

[0291] In another embodiment, if the range hood controller obtains a first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains a second signal, it controls the power of the blower 11 to be the second power; if the range hood controller obtains a third signal, it controls the power of the blower 11 to be the second power. When the range hood controller obtains the second signal, the cooking fire or the flue gas concentration of the cooking appliance is small, and the blower 11 is controlled to operate at the second power, which ensures the effect of sucking the flue gas and also ensures that the noise is in a relatively small state. When the range hood controller obtains the third signal, it controls the blower 11 to operate at the second power, and when the total air volume does not increase, it can meet the requirement of sucking the flue gas, which is beneficial to reducing power consumption and noise. When the effect of sucking the flue gas still cannot meet the requirement, the power of the blower can be increased further.

[0292] In another embodiment, if the range hood controller obtains a first signal, it controls the power of the blower 11 to be the first power; if the range hood controller obtains a second signal, it controls the power of the blower 11 to be the third power; if the range hood controller obtains a third signal, it controls the power of the blower 11 to be the third power. When the range hood controller obtains the second signal and the third signal, the blower 11 operates at the third power, which ensures a sufficient total air volume, is beneficial to ensuring the effect of sucking the flue gas, and avoids the escape of the flue gas.

[0293] Solution Five

[0294] The present invention provides a range hood and stove system, as Figure 10 shown. The range hood and stove system includes: a gas stove 90 and the above-mentioned range hood 1. The range hood 1 has a range hood controller, and the gas stove 90 has a gas stove controller. The range hood controller communicates with the gas stove controller, is used to obtain the fire power level of the gas stove 90, and controls the air volume adjustment mechanism 30 to switch between a first position, a second position, a third position, or between a fourth position, a fifth position, a sixth position, or between a seventh position, an eighth position, and a ninth position according to the fire power level of the gas stove 90.

[0295] This range hood and stove system has all or at least part of the features and effects of the above-mentioned range hood 1, which will not be elaborated here. Moreover, the range hood 1 and the gas stove 90 in this range hood and stove system can be linked, and the position of the air volume adjustment mechanism 30 can be controlled according to the fire power level of the gas stove 90, realizing that the air follows the fire and intelligent smoke control, so as to ensure a better effect of sucking the flue gas in various scenarios.

[0296] In one embodiment, the heat output of the gas stove 90 includes a first heat output level, a second heat output level, and a third heat output level, where the third heat output level is greater than the second heat output level, and the second heat output level is greater than the first heat output level. When the heat output of the gas stove 90 is at the first heat output level, the range hood controller can obtain a first signal and position the air volume regulating mechanism 30 at the first position. When the heat output of the gas stove 90 is at the second heat output level, the range hood controller can obtain a second signal and position the air volume regulating mechanism 30 at the second position or the fifth position or the eighth position. When the heat output of the gas stove 90 is at the third heat output level, the range hood controller can obtain a third signal and position the air volume regulating mechanism 30 at the third position or the sixth position or the ninth position. The first heat output level can be off or a very low heat output. When the heat output of the gas stove 90 is at the first heat output level, the heat output of the cooktop is very low or off, the flue gas concentration is very low or there is no flue gas. Positioning the air volume regulating mechanism 30 at the first position, all the air volume enters the smoke collecting body 20 through the lower air intake 202. The lower air intake 202 has a strong ability to draw in flue gas and can rely solely on the lower air intake 202 to draw in and absorb the flue gas before it spreads. When the gas stove 90 operates at the second heat output level, the heat output or flue gas concentration of the cooktop is relatively low. Positioning the air volume regulating mechanism 30 at the second position or the fifth position or the eighth position, the upper air intake 201 is opened. The lower air intake 202 can draw in and absorb the flue gas before it spreads, and the flue gas that diffuses without being absorbed by the lower air intake 202 can be absorbed by the upper air intake 201, ensuring the effect of drawing in and removing flue gas. When the gas stove 90 operates at the third heat output level, the heat output or flue gas concentration of the cooktop further increases, and a large amount of flue gas rises rapidly. Positioning the air volume regulating mechanism 30 at the third position or the sixth position or the ninth position increases the proportion of the air volume entering the upper air intake 201 in the total air volume, thereby preventing the escaped diffused flue gas and achieving efficient drawing in and removal of flue gas. This embodiment can regulate the position of the air volume regulating mechanism 30 according to the heat output level of the gas stove 90, adapt to different scenarios, and ensure good flue gas drawing and removal effects in various scenarios.

[0297] In one embodiment, the gas stove 90 has a cock valve 91 and a cock valve position detection module. The cock valve position detection module can detect the rotation angle of the cock valve 91. The rotation angles include a first rotation angle, a second rotation angle, and a third rotation angle. When the rotation angle is the first rotation angle, the heating power of the gas stove 90 is at the first heating power level. The first rotation angle can be 0. At this time, the gas stove 90 is turned off and there is no fire. The first rotation angle can also be a very small angle. At this time, the gas stove 90 operates at a very low power. When the rotation angle is the second rotation angle, the gas stove 90 operates at the second heating power level. When the rotation angle is the third rotation angle, the gas stove 90 operates at the third heating power level. By detecting the rotation angle of the cock valve 91 through the cock valve position detection module, the heating power level of the gas stove 90 is obtained, so that the range hood 1 obtains the corresponding first signal, second signal, or third signal. Specifically, the signal detected by the cock valve position detection module is transmitted to the gas stove controller, and the gas stove controller then transmits the signal to the range hood controller; or the signal detected by the cock valve position detection module is directly transmitted to the range hood controller.

[0298] In one embodiment, when the heating power of the gas stove 90 is at the first heating power level, the range hood controller can obtain the first signal, make the air volume adjustment mechanism 30 located at the first position, and make the power of the blower 11 of the range hood 1 be the first power. When the heating power of the gas stove 90 is at the second heating power level, the range hood controller can obtain the second signal, make the air volume adjustment mechanism 30 located at the second position or the fifth position or the eighth position, and make the power of the blower 11 of the range hood 1 be the second power. When the heating power of the gas stove 90 is at the third heating power level, the range hood controller can obtain the third signal, and make the air volume adjustment mechanism 30 located at the third position or the sixth position or the ninth position, and make the power of the blower 11 of the range hood 1 be the third power. The third power is greater than the second power, and the second power is greater than the first power.

[0299] When the heating power of the gas stove 90 is at the first heating power level, the heating power of the cooking appliance is very small or the appliance is shut down, the flue gas concentration is very small or there is no flue gas. The power of the blower 11 is controlled to be the first power, and the air volume adjustment mechanism 30 is located at the first position. The upper air suction opening 201 is closed. All the air volume provided by the blower 11 enters the smoke collecting body 20 through the lower air suction opening 202. The lower air suction opening 202 has a strong ability to draw the flue gas. It can rely only on the lower air suction opening 202 to draw and absorb the flue gas before the flue gas diffuses. Moreover, the power of the blower 11 is low, reducing the noise and being beneficial to energy conservation.

[0300] When the gas stove 90 operates at the second firepower level, the firepower or flue gas concentration of the stove is relatively small. The air volume regulating mechanism 30 is located at the second position, the fifth position or the eighth position, and the blower 11 is controlled to operate at the second power. The air volume provided by the blower 11 increases, which not only enables the lower air suction port 202 to maintain a strong ability to draw the undiffused flue gas, but also enables the diffused flue gas to be absorbed by the upper air suction port 201, ensuring the effect of flue gas suction and keeping the noise at a relatively low level.

[0301] When the gas stove 90 operates at the third firepower level, the firepower or flue gas concentration of the stove further increases, and a large amount of flue gas rises rapidly. The blower 11 is controlled to operate at the third power, further increasing the total air volume provided by the blower 11. At the same time, the air volume regulating mechanism 30 is located at the third position, the sixth position or the ninth position, greatly increasing the air volume entering the upper air suction port 201 and preventing the diffused flue gas from escaping, thus achieving efficient flue gas suction. When the user is stir-frying, the firepower or flue gas concentration of the stove is very high. The blower 11 operates at the third power, and the air volume regulating mechanism 30 is located at the third position, the sixth position or the ninth position, which can ensure the effect of flue gas suction. Moreover, since the user frequently stirs and fries during stir-frying, the sound of the spatula and other utensils is relatively loud, and the user's sensitivity to noise is relatively low at this time. Although the blower 11 operates at the third power and the noise is relatively high, it has little impact on the user.

[0302] This embodiment can adjust the power of the blower 11 and the position of the air volume regulating mechanism 30 according to the firepower level of the gas stove 90. When the total air volume is relatively large, the proportion of the air volume entering the upper air suction port 201 in the total air volume is increased. When the total air volume is relatively small, the proportion of the air volume entering the lower air suction port 202 in the total air volume is increased, ensuring the flue gas suction effect, adapting to various scenarios, and achieving intelligent smoke control and energy saving and noise reduction.

[0303] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention according to the content disclosed in the application documents.

Claims

1. An oil fume extractor, characterized in that, the oil fume extractor includes: a blower box and a smoke collecting body, and the smoke collecting body is communicated with the blower box; the front panel of the smoke collecting body has an upper air suction opening and a lower air suction opening which are arranged at intervals; the smoke collecting body further has an air volume adjusting mechanism, and the air volume adjusting mechanism is close to or located at the upper air suction opening for at least changing the air volume entering the upper air suction opening; the air volume adjusting mechanism can be switched between a first position, a second position and a third position, when the air volume adjusting mechanism is located at the first position, the upper air suction opening is closed, when the air volume adjusting mechanism is located at the second position or the third position, the upper air suction opening is opened, when the air volume adjusting mechanism is located at the second position, the air volume entering the upper air suction opening is a first air volume, when the air volume adjusting mechanism is located at the third position, the air volume entering the upper air suction opening is a second air volume, and the second air volume is greater than the first air volume.

2. The oil fume extractor according to claim 1, characterized in that, the oil fume extractor further includes an oil fume extractor controller, and the oil fume extractor controller is used for obtaining a first signal, a second signal and a third signal which characterize the fire power or the smoke concentration of the cooking appliance, and the fire power or the smoke concentration of the cooking appliance characterized by the first signal, the second signal and the third signal increases in sequence.

3. The oil fume extractor according to claim 2, characterized in that, if the oil fume extractor controller obtains the first signal, the air volume adjusting mechanism is located at the first position; if the oil fume extractor controller obtains the second signal, the air volume adjusting mechanism is located at the second position; if the oil fume extractor controller obtains the third signal, the air volume adjusting mechanism is located at the third position.

4. The oil fume extractor according to claim 3, characterized in that, a blower is provided in the blower box, if the oil fume extractor controller obtains the first signal, the power of the blower is controlled to be a first power; if the oil fume extractor controller obtains the second signal, the power of the blower is controlled to be a second power; if the oil fume extractor controller obtains the third signal, the power of the blower is controlled to be a third power; the first power, the second power and the third power increase in sequence.

5. The oil fume extractor according to claim 3, characterized in that, a blower is provided in the blower box, if the oil fume extractor controller obtains the first signal, the power of the blower is controlled to be a first power; if the oil fume extractor controller obtains the second signal, the power of the blower is controlled to be a third power; if the oil fume extractor controller obtains the third signal, the power of the blower is controlled to be a second power; the first power, the second power and the third power increase in sequence.

6. The oil fume extractor according to claim 3, characterized in that, a blower is provided in the blower box, and the power of the blower includes a first power, a second power and a third power, and the first power, the second power and the third power increase in sequence; If the range hood controller obtains the first signal, it controls the power of the blower to be the first power; If the range hood controller obtains the second signal, it controls the power of the blower to be the second power; If the range hood controller obtains the third signal, it controls the power of the blower to be the second power.

7. The range hood according to claim 3, wherein a blower is provided in the blower box, and the power of the blower includes a first power, a second power, and a third power, and the first power, the second power, and the third power increase in sequence; If the range hood controller obtains the first signal, it controls the power of the blower to be the first power; If the range hood controller obtains the second signal, it controls the power of the blower to be the third power; If the range hood controller obtains the third signal, it controls the power of the blower to be the third power.

8. The range hood according to claim 1, wherein the smoke collecting body is a thin smoke collecting body, the thin smoke collecting body has a front panel and a back panel that are oppositely arranged and have a distance not exceeding a first preset interval, and the thin smoke collecting body also has a left side panel and a right side panel that are oppositely arranged and have a distance not less than a second preset interval, the front panel is connected to both the left side panel and the right side panel, and the back panel is connected to both the left side panel and the right side panel.

9. The range hood according to claim 8, wherein the first preset interval is between 40 mm and 160 mm, and the second preset interval is between 890 mm and 900 mm.

10. The range hood according to claim 8, wherein the front panel of the thin smoke collecting body is an inclined panel at a preset angle with the vertical direction, the preset angle is not greater than 20° and not less than 8°, and the upper air suction opening and the lower air suction opening are arranged on the inclined panel.

11. The range hood according to claim 8, wherein the distance between the top of the front panel and the top of the back panel of the thin smoke collecting body is not less than 2 times the distance between the bottom of the front panel and the bottom of the back panel of the thin smoke collecting body, and / or, the distance between the top of the front panel and the top of the back panel of the thin smoke collecting body is not greater than 3 times the distance between the bottom of the front panel and the bottom of the back panel of the thin smoke collecting body.

12. The range hood according to claim 11, wherein the distance between the bottom of the front panel and the bottom of the back panel of the thin smoke collecting body is 50 mm - 60 mm, and the distance between the top of the front panel and the top of the back panel of the thin smoke collecting body is 120 mm - 140 mm.

13. The range hood according to claim 1, wherein The area S of the lower air suction opening 下 satisfies: S 下 ≤ f, and f ≤ 0.05 m².

14. The range hood according to claim 13, wherein The total area of the front panel of the smoke collecting body is S, and S 下 The ratio of / S is not greater than 0.

15.

15. The range hood according to claim 13, wherein The area S of the upper air suction opening 上 satisfies: S 上 ≥ h; h ≥ 0.07 m² and / or h is greater than f.

16. The range hood according to claim 13, wherein The total area of the front panel of the smoke collecting body is S, and the area S 上 of the upper air suction opening satisfies: S 上 / S is not less than 0.

2.

17. The range hood according to claim 15 or 16, wherein The upper edge of the upper air suction opening is close to or located at the top of the front panel, the lower edge of the lower air suction opening is close to or located at the bottom of the front panel, and the front panel further has a flow guide plate, and the flow guide plate is arranged between the lower air suction opening and the upper air suction opening along the flowing direction of the flue gas.

18. The range hood according to claim 17, wherein The area of the deflector is S 导 , the total area of the front panel of the smoke collecting body is S, S 导 The ratio of / S is not less than 0.3 and not greater than 0.

65.

19. The range hood according to claim 1, wherein The air volume adjusting mechanism is a smoke collecting plate, and the smoke collecting plate is rotatably connected to the smoke collecting body up and down.

20. The range hood according to claim 19, wherein When the smoke collecting plate is located at the first position, the angle between the smoke collecting plate and the front panel of the smoke collecting body is a first angle, When the smoke collecting plate is located at the second position, the angle between the smoke collecting plate and the front panel of the smoke collecting body is a second angle, When the smoke collecting plate is located at the third position, the angle between the smoke collecting plate and the front panel of the smoke collecting body is a third angle, The first angle is less than the second angle, and the second angle is less than the third angle.

21. The range hood according to claim 20, wherein When the smoke collecting plate is located at the second position, the angle M between the smoke collecting plate and the front panel of the smoke collecting body satisfies: 40°≤M≤50°; and / or, When the smoke collecting plate is located at the third position, the angle N between the smoke collecting plate and the front panel of the smoke collecting body satisfies: 55°≤N≤65°.

22. The range hood according to claim 20, wherein When the smoke collecting plate is located at the third position, the area of the projection of the smoke collecting plate on the cooktop is not less than 2 / 5 of the area of the cooktop.

23. The range hood according to claim 20, wherein When the smoke collecting plate is located at the third position, the area of the projection of the smoke collecting plate on the cooktop is not greater than 2 / 3 of the area of the cooktop.

24. The range hood according to claim 19, wherein The smoke collecting body is a thin smoke collecting body, and the thin smoke collecting body has a front panel and a back panel that are oppositely arranged and have a distance not exceeding a first preset interval, and a left side plate and a right side plate that are oppositely arranged and have a distance not less than a second preset interval. The front panel is connected to both the left side plate and the right side plate, and the back panel is connected to both the left side plate and the right side plate. The smoke collecting body further has a top panel, the top panel is connected to the left side plate, the right side plate, the front panel, and the back panel, and the top panel has an extending portion extending out of the front panel, and the extending portion is provided with a top light emitting area for downward illumination.

25. The range hood according to claim 24, wherein When the smoke collecting plate is located at the third position, the projected area of the smoke collecting plate on the top light emitting area is not less than 2 / 3 of the area of the top light emitting area.

26. The range hood according to claim 25, wherein When the smoke collecting plate is located at the third position, the projected area of the smoke collecting plate on the top light emitting area is not greater than 4 / 5 of the area of the top light emitting area.

27. The range hood according to claim 1, wherein the smoke collecting body includes a horizontally extending horizontal cavity and a vertically extending vertical cavity connected to each other, and the vertical cavity is located below the horizontal cavity; the horizontal cavity has a protruding portion protruding from the front panel of the vertical cavity, and the lower surface of the protruding portion has a light-emitting area capable of forming a preset pattern; the range hood or the smoke collecting body has a reflector, and the position of the reflector includes at least a reflection position. When the reflector is located at the reflection position, at least part of the reflector is located below the protruding portion to reflect the preset pattern formed by the light-emitting area.

28. The range hood according to claim 27, wherein the air volume adjusting mechanism is a smoke collecting plate, and the smoke collecting plate is rotatably connected to the smoke collecting body up and down; the reflector is a smoke collecting plate; the reflection position includes the second position or the third position; the smoke collecting plate has opposite inner and outer surfaces, and the inner surface is closer to the upper air suction port than the outer surface. When the smoke collecting plate is located at the reflection position, the inner surface is used for collecting smoke, and the outer surface is used for reflecting the preset pattern formed by the light-emitting area.

29. The range hood according to claim 1, wherein an oil mesh support and an oil mesh mounted on the oil mesh support are provided in the cavity of the smoke collecting body, and the oil mesh is located behind the upper air suction port; a front oil guiding member is further provided in the cavity of the smoke collecting body, at least part of which is located in front of the oil mesh. The upper end of the front oil guiding member is connected to the oil mesh support and is located below the oil mesh. The front oil guiding member inclines forward and downward from the upper end to guide the oil liquid filtered by the front surface of the oil mesh to the inner surface of the front panel.

30. The range hood according to claim 29, wherein the lower end of the front oil guiding member has a front oil collecting member, and the front oil collecting member extends along the width direction of the smoke collecting body, and at least one side of the front oil collecting member has a first oil outlet.

31. The range hood according to claim 29, wherein a lower oil collecting member is provided on the inner surface of the front panel, the lower oil collecting member extends along the width direction of the smoke collecting body, and the lower oil collecting member is located below the front oil guiding member and is used for collecting the oil liquid condensed on the lower surface of the front oil guiding member. At least one side of the lower oil collecting member has a second oil outlet.

32. The range hood according to claim 29, wherein at least part of the projection of the oil mesh or the oil mesh support on the horizontal plane coincides with the lower air suction port.

33. The range hood according to claim 29, wherein a flow channel with a preset distance is provided between the side of the lower air suction port and the side of the front panel, and the flow channel is used to enable the oil liquid above the lower air suction port to flow along the inner surface of the front panel to below the lower air suction port.

34. The range hood according to claim 1, wherein the lower air suction port is open.

35. A range hood, wherein The range hood includes: a blower box and a smoke collecting body, and the top of the smoke collecting body is communicated with the blower box; The front panel of the smoke collecting body has an upper air inlet and a lower air inlet which are arranged at intervals; The smoke collecting body is further provided with an air volume adjusting mechanism, and the air volume adjusting mechanism is close to or located at the lower air inlet and is used for at least changing the air volume entering the upper air inlet; The air volume adjusting mechanism can be switched between a fourth position, a fifth position and a sixth position, When the air volume adjusting mechanism is located at the fourth position, the lower air inlet is closed, When the air volume adjusting mechanism is located at the fifth position or the sixth position, the lower air inlet is opened, When the air volume adjusting mechanism is located at the fifth position, the air volume entering the upper air inlet is a first air volume, When the air volume adjusting mechanism is located at the sixth position, the air volume entering the upper air inlet is a second air volume, and the second air volume is greater than the first air volume.

36. The range hood according to claim 35, wherein The range hood further includes a range hood controller, and the range hood controller is used for obtaining a first signal, a second signal and a third signal which represent the fire power or the smoke concentration of the cooking appliance, and the fire power or the smoke concentration of the cooking appliance represented by the first signal, the second signal and the third signal increases in sequence.

37. The range hood according to claim 36, wherein If the range hood controller obtains the first signal, the air volume adjusting mechanism is located at the fourth position; If the range hood controller obtains the second signal, the air volume adjusting mechanism is located at the fifth position; If the range hood controller obtains the third signal, the air volume adjusting mechanism is located at the sixth position.

38. The range hood according to claim 37, wherein A blower is arranged in the blower box, If the range hood controller obtains the first signal, the power of the blower is controlled to be a first power; If the range hood controller obtains the second signal, the power of the blower is controlled to be a second power; If the range hood controller obtains the third signal, the power of the blower is controlled to be a third power; The first power, the second power and the third power increase in sequence.

39. The range hood according to claim 35, wherein The upper air inlet is arranged in an open manner.

40. A range hood, wherein The range hood includes: a blower box and a smoke collecting body, and the top of the smoke collecting body is communicated with the blower box; The front panel of the smoke collecting body has an upper air inlet and a lower air inlet which are arranged at intervals; An air volume adjusting mechanism is arranged in the smoke collecting body, and in the height direction, the air volume adjusting mechanism is located between the upper air inlet and the lower air inlet, and the air flow between the blower box and the lower air inlet flows through the air volume adjusting mechanism, and the air volume adjusting mechanism is used for at least changing the air volume entering the upper air inlet; The air volume adjusting mechanism can be switched between a seventh position, an eighth position and a ninth position, When the air volume adjusting mechanism is in the seventh position, the airflow is blocked from flowing from the lower air suction opening to the blower box. When the air volume adjusting mechanism is in the eighth position or the ninth position, the airflow can flow from the lower air suction opening to the blower box. When the air volume adjusting mechanism is in the seventh position, the air volume entering the upper air suction opening is the first air volume. When the air volume adjusting mechanism is in the eighth position, the air volume entering the upper air suction opening is the second air volume, and the second air volume is greater than the first air volume.

41. The range hood according to claim 40, wherein both the upper air suction opening and the lower air suction opening are open.

42. A smoke stove system, characterized in that, Comprising: a gas stove and the range hood according to any one of claims 1-34 or the range hood according to any one of claims 35-39 or the range hood according to any one of claims 40-41. The range hood has a range hood controller, and the gas stove has a gas stove controller. The range hood controller communicates with the gas stove controller to obtain the fire power level of the gas stove, and controls the air volume adjusting mechanism to switch between the first position, the second position, the third position or between the fourth position, the fifth position, the sixth position or between the seventh position, the eighth position, the ninth position according to the fire power level of the gas stove.

43. The range hood and gas stove system according to claim 42, wherein the fire power of the gas stove includes a first fire power level, a second fire power level and a third fire power level, the third fire power level is greater than the second fire power level, and the second fire power level is greater than the first fire power level. When the fire power of the gas stove is at the first fire power level, the range hood controller can obtain a first signal and make the air volume adjusting mechanism be in the first position. When the fire power of the gas stove is at the second fire power level, the range hood controller can obtain a second signal and make the air volume adjusting mechanism be in the second position or the fifth position or the eighth position. When the fire power of the gas stove is at the third fire power level, the range hood controller can obtain a third signal and make the air volume adjusting mechanism be in the third position or the sixth position or the ninth position.

44. The range hood and gas stove system according to claim 43, wherein the gas stove has a cock valve and a cock valve position detection module, and the cock valve position detection module can detect the rotation angle of the cock valve. The rotation angles include a first rotation angle, a second rotation angle, and a third rotation angle. When the rotation angle is the first rotation angle, the fire power of the gas stove is at the first fire power level. When the rotation angle is the second rotation angle, the fire power of the gas stove is at the second fire power level. When the rotation angle is the third rotation angle, the fire power of the gas stove is at the third fire power level.

45. The range hood and gas stove system according to claim 43, wherein When the heating power of the gas stove is at the first heating power level, the range hood controller can obtain the first signal, causing the air volume adjustment mechanism to be in the first position and making the power of the fan of the range hood be the first power; When the heating power of the gas stove is at the second heating power level, the range hood controller can obtain the second signal, causing the air volume adjustment mechanism to be in the second position or the fifth position or the eighth position and making the power of the fan of the range hood be the second power; When the heating power of the gas stove is at the third heating power level, the range hood controller can obtain the third signal and cause the air volume adjustment mechanism to be in the third position or the sixth position or the ninth position and make the power of the fan of the range hood be the third power; The third power is greater than the second power, and the second power is greater than the first power.

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