Range hood

Abstract

The utility model relates to a range hood, which comprises a fan frame, a first exhaust inlet and a second exhaust inlet are formed in the bottom of the exhaust fume collecting hood; a first baffle capable of deflecting relative to the exhaust fume collecting hood is arranged at a first exhaust inlet of the exhaust fume collecting hood, the first baffle can adjust the opening degree of the first exhaust inlet along with the change of the rotating position of the first baffle, and a second baffle capable of deflecting relative to the exhaust fume collecting hood is arranged at a second exhaust inlet of the exhaust fume collecting hood. The second baffle can adjust the opening degree of the second air suction opening along with the change of the rotating position of the second baffle, and the first baffle and the second baffle are driven by the same driving mechanism and at least have a first state, a second state and a third state: in the first state, the opening degree of the first air suction opening is the same as the opening degree of the second air suction opening; in the second state, the opening degree of the first air suction opening is larger than that of the second air suction opening; and in the third state, the opening degree of the second air suction opening is larger than that of the first air suction opening. The range hood has the advantages that left and right flows can be reasonably distributed, and the cooking side oil smoke suction effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field especially, relate to a kind of range hood. BACKGROUND

[0002] Range hood is a kind of kitchen appliance that purifies kitchen environment. Range hood is generally divided into top suction type range hood and near suction type range hood. But the existing top suction type range hood generally only has a bottom middle air inlet, and its smoke suction effect is poor, and oil fume is easy to escape from the side.

[0003] Therefore, the Chinese utility model patent application with application number CN202221358667.5 (authorized announcement number: CN217928918U) discloses a T-shaped smoke machine, which includes a smoke collecting hood and an air exhaust shell. The bottom of the smoke collecting hood is provided with a main smoke collecting structure and an auxiliary smoke collecting structure. The main smoke collecting structure is used to define a concave main smoke collecting cavity, and the auxiliary smoke collecting structure is used to define a concave auxiliary smoke collecting cavity. Both the main smoke collecting cavity and the auxiliary smoke collecting cavity can be used to collect oil fume. Simultaneous air intake and smoke suction through the main smoke suction port group corresponding to the main smoke collecting cavity and the auxiliary smoke suction port group corresponding to the auxiliary smoke collecting cavity can improve the oil fume suction and exhaust efficiency of the T-shaped smoke machine. By increasing the auxiliary smoke collecting structure and the auxiliary smoke suction port group on the left and right sides of the main smoke suction port group, the escape of oil fume from the side can be effectively prevented. The Chinese utility model patent application with application number CN202123352958.1 (authorized announcement number: CN217209498U) also makes a similar disclosure.

[0004] However, the range hood in the above patent application still has some deficiencies. The cooking range corresponding to the range hood has two left and right burners. For the case of unilateral cooking of the user, the above range hood cannot adjust the flow rates of the left and right sides, but directly increases the rotation speed of the impeller to increase the total air volume of the range hood. The increase in the total air volume leads to the simultaneous increase in the air volume of the left side and the air volume of the right side, but also causes a substantial increase in noise, reduces the user experience, and the actual cooking occurs on one side. The simultaneous increase in the air volume of the two sides leads to the waste of energy of the other side.

[0005] Therefore, the existing range hood still needs to be further improved. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem in the prior art, and provides a range hood that can reasonably distribute the flow rates of the left and right sides and improve the oil fume suction effect of the cooking side.

[0007] The utility model solves the above technical problem by adopting the following technical scheme: a range hood, which comprises:

[0008] A fan frame;

[0009] A smoke hood is arranged below the fan stand, and the bottom of the smoke hood is provided with a first air inlet and a second air inlet arranged at intervals in the left-right direction;

[0010] The first air inlet of the smoke hood is provided with a first baffle capable of deflecting relative to the smoke hood, and the first baffle can adjust the opening degree of the first air inlet according to the change of the rotating position of the first baffle. The second air inlet of the smoke hood is provided with a second baffle capable of deflecting relative to the smoke hood, and the second baffle can adjust the opening degree of the second air inlet according to the change of the rotating position of the second baffle. The first baffle and the second baffle are driven by the same driving mechanism and have at least a first state, a second state and a third state:

[0011] In the first state, the opening degree of the first air inlet is the same as the opening degree of the second air inlet;

[0012] In the second state, the opening degree of the first air inlet is greater than the opening degree of the second air inlet;

[0013] In the third state, the opening degree of the second air inlet is greater than the opening degree of the first air inlet.

[0014] In order to realize the rotating connection of the first baffle and the second baffle, the first air inlet is located on the left side of the bottom of the smoke hood, the second air inlet is located on the right side of the bottom of the smoke hood, the right side of the first baffle is rotatably connected to the right side of the first air inlet through a first rotating shaft extending front and back, and the left side of the second baffle is rotatably connected to the left side of the second air inlet through a second rotating shaft extending front and back.

[0015] As an improvement, in order to improve the effect of gathering smoke, the first baffle is inclined downward from right to left in the state of opening the first air inlet, and the second baffle is inclined downward from left to right in the state of opening the second air inlet. The first baffle and the second baffle are inclined downward by a certain angle to form a certain angle, which can form a smoke gathering area to ensure that the oil fume can be guided to the main air inlet, and the oil fume escaping to the left / right direction can also be sucked into the first air inlet or the second air inlet on the left / right side, thereby reducing the escape of oil fume.

[0016] In order to simplify the structure of the driving mechanism, the driving mechanism comprises a driving member, a movable shaft extending in the left-right direction, a first rocker and a second rocker. The movable shaft can move along the axial direction of the movable shaft under the driving of the driving member. The first end of the first rocker is rotatably connected to the first end of the movable shaft, the second end of the first rocker is rotatably connected to the back of the first baffle, the first end of the second rocker is rotatably connected to the second end of the movable shaft, and the second end of the second rocker is rotatably connected to the back of the second baffle.

[0017] In order to avoid the drive and the movable shaft from being polluted by the oil fume, the rear part of the smoke collecting cover is further provided with left and right extending installation cavities, and the drive and the movable shaft are arranged in the installation cavities.

[0018] Considering that the first air inlet and the second air inlet on the left and right sides are slightly forward relative to the position of the movable shaft, the first end of the movable shaft is further provided with a first bending part which is forwardly bent and extends, the first end of the first rocker is rotationally connected to the front end of the first bending part, the second end of the movable shaft is further provided with a second bending part which is forwardly bent and extends, and the first end of the second rocker is rotationally connected to the front end of the second bending part.

[0019] In order to be connected to the drive mechanism arranged on the rear part of the smoke collecting cover, the back surface of the first baffle is arranged adjacent to the rear side of the first baffle, and the position where the second end of the first rocker is rotationally connected to the back surface of the first baffle is arranged adjacent to the rear side of the first baffle, the back surface of the second baffle is arranged adjacent to the rear side of the second baffle, and the position where the second end of the second rocker is rotationally connected to the back surface of the second baffle is arranged adjacent to the rear side of the second baffle.

[0020] In order to further improve the oil fume collecting effect, the bottom of the smoke collecting cover is further provided with a main air inlet which is located between the first air inlet and the second air inlet, the main air inlet is located directly below the fan frame, and an oil screen is arranged at the main air inlet. During cooking operation, the oil fume which cannot be sucked into the main air inlet can be sucked into the first air inlet or the second air inlet during the flow to the left and right sides, so as to reduce the oil fume escape.

[0021] As an improvement, the main body of the smoke collecting cover is provided with a left shoulder part which protrudes to the left relative to the main body of the fan frame and a right shoulder part which protrudes to the right relative to the main body of the fan frame, the bottom of the left shoulder part is provided with the first air inlet, and the left shoulder part further defines a first air duct which communicates the first air inlet with the internal space of the fan frame, the bottom of the right shoulder part is provided with the second air inlet, and the right shoulder part further defines a second air duct which communicates the second air inlet with the internal space of the fan frame.

[0022] Compared with the prior art, the advantages of the smoke collecting cover of the oil fume collecting hood are as follows: the first baffle and the second baffle which are correspondingly arranged at the bottom of the smoke collecting cover of the oil fume collecting hood can be driven by the same drive mechanism to change the opening degree of the first air inlet and the second air inlet, so as to adjust the oil fume collecting effect of the first air inlet and the second air inlet on the left and right sides, solve the problem that the same side of the oil fume collecting hood corresponding to the cooking side can greatly improve the oil fume collecting effect and reduce the oil fume escape, and the structure design does not need to increase the total air volume of the centrifugal fan, that is, the rotating speed of the centrifugal fan impeller can remain unchanged, and the noise problem and the fan energy consumption will not be increased. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1A three-dimensional structure schematic view of the range hood according to an embodiment of the present application is shown in the figure.

[0024] Figure 2 A three-dimensional structure schematic view of the range hood according to an embodiment of the present application is shown in the figure (the outer shell is omitted from the smoke collecting hood).

[0025] Figure 3 A vertical sectional view of the range hood according to an embodiment of the present application is shown in the figure (the first air inlet and the second air inlet are at the same opening degree).

[0026] Figure 4 A vertical sectional view of the range hood according to an embodiment of the present application is shown in the figure (the first air inlet is at the maximum opening degree, and the second air inlet is at the closed state). DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] In the description and claims of the present application, terms are used to describe various example structures and elements of the present application. These terms are used only to facilitate description of the examples, and are in no way intended to limit or restrict the scope of the application. For example, the terms "front," "back," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used only to describe the various example embodiments, and are in no way intended to limit or restrict the scope of the application. The terms "front," "back," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used only to facilitate description of the examples, and are in no way intended to limit or restrict the scope of the application. For example, the terms "front," "back," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used only to facilitate description of the examples, and are in no way intended to limit or restrict the scope of the application.

[0029] Figures 1-4 A preferred embodiment of the range hood according to the present application is shown in the figure. The range hood comprises a fan frame 11, a smoke collecting hood 12, a centrifugal fan 30, a first baffle 21, a second baffle 22, and a driving mechanism.

[0030] The smoke collecting hood 12 is arranged at the bottom of the fan frame 11, and the inner cavity of the fan frame 11 is in communication with the inner cavity of the smoke collecting hood 12. The bottom of the smoke collecting hood 12 is provided with an air inlet, through which external smoke can enter the smoke collecting hood 12. The centrifugal fan 30 is arranged in the fan frame 11, and when the centrifugal fan 30 operates, negative pressure is generated, and external oil fume can be sucked into the smoke collecting hood 12 through the air inlet. The air inlet of the smoke collecting hood 12 comprises a main air inlet 120 located in the middle position and auxiliary air inlets located on the left and right sides of the main air inlet 120, and the auxiliary air inlets comprise a first air inlet 1201 located on the left side and a second air inlet 1202 located on the right side. The main air inlet 120 corresponds to the position directly below the fan frame 11, and an oil screen 124 is arranged at the main air inlet 120, which is used to filter oil fume.

[0031] The left and right dimensions of the main body of the fume hood 12 are greater than those of the main body of the fan stand 11, wherein a first air duct 1211 is defined in the left portion of the fume hood 12 (i.e. the left shoulder portion 125 protruding to the left relative to the main body of the fan stand 11), and a first suction port 1201 is located at the bottom of the left portion of the fume hood 12. A second air duct 1212 is defined in the right portion of the fume hood 12 (i.e. the right shoulder portion 126 protruding to the right relative to the main body of the fan stand 11), and a second suction port 1202 is located at the bottom of the right portion of the fume hood 12. The first air duct 1211 and the second air duct 1212 extend substantially left and right, wherein the first air duct 1211 forms a first air outlet at the position where the fume hood 12 meets the fan stand 11, and the first air outlet is a strip-shaped port arranged in the front and back direction. The second air duct 1212 forms a second air outlet at the position where the fume hood 12 meets the fan stand 11, and the second air outlet is also a strip-shaped port arranged in the front and back direction and opposite to the first air outlet. The first air outlet and the second air outlet can be provided with a grating net for filtering oil fume and distributing air flow.

[0032] The first suction port 1201 of the fume hood 12 is provided with a first baffle 21 capable of deflecting up and down relative to the fume hood 12, and the first baffle 21 can adjust the opening degree of the first suction port 1201 by changing the rotating position thereof. Specifically, the right side edge of the first baffle 21 is rotatably connected to the right side edge of the first suction port 1201 of the fume hood 12 by a first rotating shaft 211 extending front and back, and when the first baffle 21 is deflected upward to the limit position (substantially in a horizontally extending state), the first baffle 21 can completely cover the first suction port 1201 to close the first suction port 1201, and when the first baffle 21 is deflected downward to the open state, the first baffle 21 is inclined downward from right to left. Similarly, the second suction port 1202 of the fume hood 12 is provided with a second baffle 22 capable of deflecting up and down relative to the fume hood 12, and the second baffle 22 can adjust the opening degree of the second suction port 1202 by changing the rotating position thereof. Specifically, the left side edge of the second baffle 22 is rotatably connected to the left side edge of the second suction port 1202 of the fume hood 12 by a second rotating shaft 221 extending front and back, and when the second baffle 22 is deflected upward to the limit position (substantially in a horizontally extending state), the second baffle 22 can completely cover the second suction port 1202 to close the second suction port 1202, and when the second baffle 22 is deflected downward to the open state, the second baffle 22 is inclined downward from left to right. Since the first baffle 21 and the second baffle 22 are both inclined downward at a certain angle on the left and right sides, a fume gathering area can be formed, and according to the wall attachment effect, the oil fume rising on the left and right sides can climb to the middle along the first baffle 21 and the second baffle 22 on the left and right sides under the action of the main suction port 120 and be sucked into the range hood, thereby reducing the escape of oil fume. The oil fume escaping to the left / right direction can also be sucked into the first suction port 1201 or the second suction port 1202 on the left / right side, thereby reducing the escape of oil fume.

[0033] Generally, the first baffle 21 and the second baffle 22 can be driven to deflect by two independent driving mechanisms, but in order to reduce the number of driving mechanisms and avoid occupying the internal space of the smoke hood 12 and the fan frame 11, in the preferred embodiment, the first baffle 21 and the second baffle are driven by the same driving mechanism to have at least a first state, a second state and a third state:

[0034] Referring to Figure 3 In the first state, the opening degree of the first air inlet 1201 is the same as that of the second air inlet 1202, in which case, both left and right sides are in cooking state.

[0035] In the second state, the opening degree of the first air inlet 1201 is greater than that of the second air inlet 1202, in which case, it is suitable for the cooking condition of the left side being more intense than that of the right side, wherein the right side can also be not cooking operation, at this time, the second air inlet 1202 on the right side is closed, and the first air inlet 1201 on the left side is opened to the maximum, see Figure 4 .

[0036] In the third state, the opening degree of the second air inlet 1202 is greater than that of the first air inlet 1201. In this case, it is suitable for the cooking condition of the right side being more intense than that of the left side, wherein the left side can also be not cooking operation, at this time, the first air inlet 1201 on the left side is closed, and the second air inlet 1202 on the right side is opened to the maximum.

[0037] The driving mechanism of the present embodiment comprises a driving member 41, a movable shaft 42 extending in the left-right direction, a first rocker 431 and a second rocker 432. The rear part of the fume hood 12 is further provided with a left-right extending mounting chamber 123, and the driving member 41 and the movable shaft 42 are both arranged in the mounting chamber 123 to avoid the driving member 41 and the movable shaft 42 from being contaminated by contacting the oil fume. The movable shaft 42 can move in the axial direction of the movable shaft 42, i.e. in the left-right direction, under the driving of the driving member. The driving member 41 described above can adopt various existing driving sources capable of acting on the movable shaft 42 and driving the movable shaft 42 to move linearly in the axial direction, such as a driving motor cooperating with a swing arm structure or an electric push rod, etc. Considering that the positions of the first air inlet 1201 and the second air inlet 1202 on the left and right sides are slightly forward relative to the position of the movable shaft 42, the first end of the movable shaft 42 is further provided with a first bending part 421 extending forwardly and bending, the first end of the first rocker 431 is rotationally connected to the front end part of the first bending part 421, and the second end of the first rocker 431 is rotationally connected to the back surface of the first baffle 21, wherein the position where the back surface of the first baffle 21 is rotationally connected to the second end of the first rocker 431 is adjacent to the rear side edge of the first baffle 21. Similarly, the second end of the movable shaft 42 is further provided with a second bending part 422 extending forwardly and bending, the first end of the second rocker 432 is rotationally connected to the front end part of the second bending part 422, and the second end of the second rocker 432 is rotationally connected to the back surface of the second baffle 22, wherein the position where the back surface of the second baffle 22 is rotationally connected to the second end of the second rocker 432 is adjacent to the rear side edge of the second baffle 22.

[0038] The air volume adjustment process of the range hood of the present embodiment is as follows:

[0039] When the movable shaft 42 is in the middle position, the turning angles of the left and right flaps are the same, and at this time the air inlet areas of the second air inlets 1202 on the left and right sides are also the same. When unilateral cooking is performed, such as left-side cooking, the driving member 41 drives the movable shaft 42 to move to the left, and at this time the first baffle 21 and the second baffle 22 on the left and right sides are both turned counterclockwise, the air inlet area of the second air inlet 1202 on the right side gradually decreases, the air inlet area of the first air inlet 1201 on the left side gradually increases, and the decreased air inlet area of the second air inlet 1202 on the right side is basically equal to the increased air inlet area of the first air inlet 1201 on the left side. For the range hood, the total air inlet area does not change. Until the second air inlet 1202 on the right side is completely closed, at this time the first air inlet 1201 on the left side is completely opened, and the turning angle of the first baffle 21 also reaches the maximum, i.e. at this time the air volume of the first air inlet 1201 on the left side also reaches the maximum. This state is suitable for use when left-side unilateral cooking is performed. It should be noted that, in order to ensure that the total air volume of the fan does not increase, it is necessary to ensure that the sum of the air inlet areas on the left and right sides, i.e. the total air inlet area, remains unchanged during the translation movement.

Claims

1. A range hood, comprising: Wind turbine frame (11); The smoke hood (12) is located below the fan frame (11), and its bottom has a first air intake (1201) and a second air intake (1202) arranged at intervals in the left and right directions; The features are as follows: a first baffle (21) capable of deflecting relative to the smoke hood (12) is provided at the first air intake (1201) of the smoke hood (12), and the opening degree of the first air intake (1201) can be adjusted by changing its rotation position; a second baffle (22) capable of deflecting relative to the smoke hood (12) is provided at the second air intake (1202) of the smoke hood (12), and the opening degree of the second air intake (1202) can be adjusted by changing its rotation position; the first baffle (21) and the second baffle (22) are driven by the same driving mechanism and have at least a first state, a second state and a third state: In the first state, the opening degree of the first air intake (1201) is the same as the opening degree of the second air intake (1202); In the second state, the opening of the first air intake (1201) is greater than the opening of the second air intake (1202); In the third state, the opening of the second air intake (1202) is greater than the opening of the first air intake (1201).

2. The range hood according to claim 1, characterized in that: The first air intake (1201) is located on the bottom left side of the smoke hood (12), and the second air intake (1202) is located on the bottom right side of the smoke hood (12). The right side of the first baffle (21) is rotatably connected to the right side edge of the first air intake (1201) through a first rotating shaft (211) extending forward and backward. The left side of the second baffle (22) is rotatably connected to the left side edge of the second air intake (1202) through a second rotating shaft (221) extending forward and backward.

3. The range hood according to claim 2, characterized in that: When the first baffle (21) is in the state of opening the first air intake (1201), the first baffle (21) tilts downward from right to left. When the second baffle (22) is in the state of opening the second air intake (1202), the second baffle (22) tilts downward from left to right.

4. The range hood according to any one of claims 1 to 3, characterized in that: The driving mechanism includes a driving member (41), a movable shaft (42) extending in the left-right direction, a first rocker arm (431), and a second rocker arm (432). The movable shaft (42) can move along the axial direction of the movable shaft (42) under the drive of the driving member (41). The first end of the first rocker arm (431) is rotatably connected to the first end of the movable shaft (42), and the second end of the first rocker arm (431) is rotatably connected to the back of the first baffle (21). The first end of the second rocker arm (432) is rotatably connected to the second end of the movable shaft (42), and the second end of the second rocker arm (432) is rotatably connected to the back of the second baffle (22).

5. The range hood according to claim 4, characterized in that: The rear of the smoke hood (12) is also provided with a mounting chamber (123) extending to the left and right, and the driving component (41) and the movable shaft (42) are both located in the mounting chamber (123).

6. The range hood according to claim 5, characterized in that: The first end of the movable shaft (42) also has a first bent portion (421) that bends forward, and the first end of the first rocker (431) is rotatably connected to the front end of the first bent portion (421). The second end of the movable shaft (42) also has a second bent portion (422) that bends forward, and the first end of the second rocker (432) is rotatably connected to the front end of the second bent portion (422).

7. The range hood according to claim 6, characterized in that: The back of the first baffle (21) is rotatably connected to the second end of the first rocker arm (431) near the rear side of the first baffle (21), and the back of the second baffle (22) is rotatably connected to the second end of the second rocker arm (432) near the rear side of the second baffle (22).

8. The range hood according to any one of claims 1 to 3, characterized in that: The bottom of the smoke hood (12) also has a main air intake (120) located between the first air intake (1201) and the second air intake (1202). The main air intake (120) is located directly below the fan frame (11), and an oil screen (124) is provided at the main air intake (120).

9. The range hood according to claim 8, characterized in that: The main body of the smoke hood (12) has a left shoulder (125) protruding to the left relative to the main body of the fan frame (11) and a right shoulder (126) protruding to the right relative to the main body of the fan frame (11). The bottom of the left shoulder (125) is provided with the first air intake (1201). The left shoulder (125) also defines a first air duct (1211) that connects the first air intake (1201) and the internal space of the fan frame (11). The bottom of the right shoulder (126) is provided with the second air intake (1202). The right shoulder (126) also defines a second air duct (1212) that connects the second air intake (1202) and the internal space of the fan frame (11).

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