Range hood

Abstract

The utility model provides a kind of range hood, range hood includes shell and box, shell has air duct in it, shell is used for the first wall surface towards cooking utensil, and installation hole is provided on the first wall surface.Box is movably arranged at installation hole, and box has air inlet cavity, and the air inlet of air inlet cavity is used for the burner towards cooking utensil, air outlet communicates air duct, and box can be switched between first position and second position.When box is located in first position, box is housed in air duct, and the outside of box is flush with shell, when box is located in second position, box is protruded relative to shell.By setting box, the air inlet cavity of box can improve the negative pressure concentration degree of range hood, and the air inlet of air inlet cavity is towards the burner of cooking utensil, when cooking, oil fume can enter air duct from air inlet along air inlet cavity after being raised from the pot placed on burner under the action of box, avoid oil fume diffusion, improve pollution capture efficiency, so that the oil fume suction effect of range hood is better.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliances, and in particular to a range hood. Background Technology

[0002] Traditional range hoods often use a top-mounted fan design to improve smoke extraction and reduce noise, increasing the overall size of the hood and thus increasing airflow. However, this type of range hood suffers from a larger overall size and fails to achieve true negative pressure concentration of airflow from both sides, resulting in poor smoke extraction, low pollution capture efficiency, and the tendency to draw in mostly clean air. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of low pollution capture efficiency in the prior art and to provide a range hood.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A range hood includes a housing with an air duct inside, the housing facing a first wall surface of a cooktop, and the first wall surface having mounting holes penetrating its wall thickness.

[0006] The range hood also includes a housing, which is movably disposed at the mounting hole. The housing has an air inlet chamber, which has an air inlet and an air outlet. The air inlet is directed toward the burner of the stove, and the air outlet is connected to the air duct. The housing can switch between a first position and a second position.

[0007] When the housing is in the first position, the housing is housed within the air duct, and the outer side of the housing is flush with the outer shell. When the housing is in the second position, the housing protrudes relative to the outer shell.

[0008] In this technical solution, by setting up a housing that is movably mounted on the first wall, the air inlet chamber of the housing can improve the negative pressure concentration of the range hood. The air inlet of the air inlet chamber faces the burner of the stove. When cooking, the fumes rise from the pot placed on the burner and, under the action of the housing, can enter the air duct through the air inlet after passing through the air inlet, thus preventing the spread of fumes, improving the pollution capture efficiency, and making the range hood have a better fume extraction effect.

[0009] Preferably, when the housing is in the second position, the distance by which the housing protrudes relative to the shell is H, where 80mm≤H≤120mm.

[0010] In this technical solution, by setting the protrusion distance of the housing relative to the shell when it is in the second position to be between 80mm and 120mm, the air inlet cavity can be closer to the burner to improve the efficiency of pollution capture, while not taking up too much space and affecting the user's cooking operation.

[0011] Preferably, the air inlet is located on the bottom wall of the housing.

[0012] Preferably, the housing moves between the first position and the second position by folding.

[0013] In this technical solution, the housing moves between the first and second positions by folding, which saves space. When the housing is in the second position and is absorbing fumes, the space occupied by the housing is the maximum space occupied by the housing.

[0014] Preferably, the range hood further includes an oil fume sensor and a controller. The oil fume sensor is disposed in the air inlet cavity and is used to detect the amount of oil fume in the air inlet cavity. The controller can control the housing to move between the first position and the second position according to the detection signal of the oil fume sensor.

[0015] In this technical solution, by installing an oil fume sensor at the air inlet, the movement of the housing can be controlled by the signal feedback from the oil fume sensor, thereby minimizing the space occupied by the housing while ensuring the suction efficiency of the range hood.

[0016] Preferably, the mounting hole includes a first mounting hole and a second mounting hole, and the housing includes a first housing and a second housing, wherein the first housing is disposed in the first mounting hole and the second housing is disposed in the second mounting hole.

[0017] In this technical solution, by setting up two boxes, which can be set up for two stoves, a better oil fume extraction effect is achieved.

[0018] Preferably, the range hood further includes a first oil fume sensor, a second oil fume sensor, and a controller. The first oil fume sensor is disposed in the first housing, the second oil fume sensor is disposed in the second housing, and the controller can control the movement of the first housing and the second housing based on the detection signals of the first oil fume sensor and the second oil fume sensor.

[0019] Preferably, the first wall surface includes a first part and a second part, the first part is inclined from top to bottom and backward, and the air inlet is disposed on the first part;

[0020] The second part is connected to the bottom of the first part, the second part is arranged in a vertical direction, and an auxiliary air inlet connected to the air duct is provided on the second part.

[0021] In this technical solution, by setting an auxiliary air inlet, the fume extraction effect of the range hood can be enhanced.

[0022] Preferably, the horizontal extension length L of the auxiliary air inlet is ≥800mm.

[0023] Preferably, the vertical extension width W of the auxiliary air inlet is ≤20mm.

[0024] Preferably, the range hood further includes a fan system disposed in the air duct, the fan system including a dual-inlet impeller, the axial width dimension A of the impeller being between two and three times the outer diameter D of the impeller.

[0025] In this technical solution, by setting the axial width dimension A of the dual-inlet impeller to be between two and three times the outer diameter D of the dual-inlet impeller, the effective axial distance for work is increased after the airflow enters the dual-inlet impeller, thereby increasing the air volume and air pressure. At the same time, according to the sixth power relationship between circumferential speed and noise, the aerodynamic noise can be reduced by reducing the circumferential speed of the dual-inlet impeller, thus achieving the purpose of increasing air volume and reducing noise.

[0026] Preferably, the fan system further includes a volute, the impeller is disposed inside the volute, the size of the volute is smaller than the size of the air duct along the radial direction of the volute, the fan inlet of the fan system is disposed at the inlet, and there is a gap between the fan inlet and the inner wall of the air duct.

[0027] In this technical solution, by setting a gap between the fan inlet and the inner wall of the duct, on the one hand, the airflow entering the duct can have sufficient buffer space to ensure the uniformity of the intake airflow, and on the other hand, the sound propagation path of the airflow can be blocked.

[0028] Preferably, the fan system further includes a motor, which is coaxially arranged with the impeller, and the outer diameter of the motor is between 0.35 and 0.5 times the outer diameter of the impeller.

[0029] In this technical solution, by setting the outer diameter of the motor to between 0.35 and 0.5 times that of the dual-inlet impeller, both the power output of the motor and the size of the motor can be guaranteed without interfering with the internal air intake.

[0030] The positive and progressive effects of this utility model are as follows: by setting up a housing that is movably mounted on the first wall, the air inlet chamber of the housing can improve the negative pressure concentration of the range hood. The air inlet of the air inlet chamber faces the burner of the stove. When cooking, the oil fumes rise from the pot placed on the burner and can enter the air duct through the air inlet under the action of the housing, thus avoiding the spread of oil fumes, improving the pollution capture efficiency, and making the range hood have a better oil fume extraction effect. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram (I) of a kitchen according to an embodiment of the present invention.

[0032] Figure 2 This is a three-dimensional structural diagram (II) of a kitchen according to an embodiment of the present invention.

[0033] Figure 3 This is a three-dimensional structural diagram (I) of a range hood according to an embodiment of the present invention.

[0034] Figure 4 This is a three-dimensional structural diagram (II) of a range hood according to an embodiment of the present invention.

[0035] Figure 5 This is a three-dimensional structural diagram (III) of a range hood according to an embodiment of the present invention.

[0036] Figure 6 This is a three-dimensional structural diagram (four) of a range hood according to an embodiment of the present invention.

[0037] Figure 7 This is a three-dimensional structural diagram (V) of a range hood according to an embodiment of the present invention.

[0038] Figure 8 This is a three-dimensional structural diagram (VI) of a range hood according to an embodiment of the present invention.

[0039] Figure 9 This is a cross-sectional structural diagram (I) of a range hood according to an embodiment of the present invention.

[0040] Figure 10 This is a cross-sectional structural diagram (II) of a range hood according to an embodiment of the present invention.

[0041] Figure 11 This is a cross-sectional structural diagram (III) of a range hood according to an embodiment of the present invention.

[0042] Figure 12 This is a cross-sectional structural diagram (four) of a range hood according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100 range hoods

[0045] Casing 1

[0046] First wall surface 11

[0047] Mounting hole 101

[0048] Auxiliary air inlet 103

[0049] Air duct 104

[0050] Part 111

[0051] Part Two, 112

[0052] Box 2

[0053] Air inlet chamber 201

[0054] Air inlet 2011

[0055] 31 volutes

[0056] Double-inlet impeller 32

[0057] Motor 33

[0058] Stove 200

[0059] User 300

[0060] Cookware 400 Detailed Implementation

[0061] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0062] like Figures 1-12 As shown, this embodiment provides a range hood 100, which includes a housing 1 and a box 2. The housing 1 has an air duct 104 inside and a first wall 11 facing the cooktop 200. The first wall 11 has a mounting hole 101 penetrating its wall thickness. The box 2 is movably disposed at the mounting hole 101 and has an air inlet 201. The air inlet 201 has an air inlet 2011 and an air outlet. The air inlet 2011 faces the burner of the cooktop 200, and the air outlet is connected to the air duct 104. The box 2 can switch between a first position and a second position. Figure 2 As shown, when the housing 2 is in the first position, the housing 2 is housed within the air duct 104, and the outer side of the housing 2 is flush with the outer shell 1, as... Figure 1As shown, when the housing 2 is in the second position, the housing 2 protrudes relative to the shell 1. By setting the housing 2, the housing 2 is movably set on the first wall 11. The air inlet chamber 201 of the housing 2 can improve the negative pressure concentration of the range hood 100. The air inlet 2011 of the air inlet chamber 201 faces the burner of the stove 200. When cooking, the oil fumes rise from the pot 400 placed on the burner and can enter the air duct 104 through the air inlet 2011 under the action of the housing 2, avoiding the diffusion of oil fumes, improving the pollution capture efficiency, and making the range hood 100 have a better oil fume extraction effect.

[0063] Specifically, when the housing 2 is in the second position, the distance by which the housing 2 protrudes relative to the shell 1 is H, where 80mm ≤ H ≤ 120mm. By setting the distance by which the housing 2 protrudes relative to the shell 1 when it is in the second position to be between 80mm and 120mm, the air inlet chamber 201 can be closer to the burner to improve the efficiency of pollution capture, while not occupying too much space and affecting the user's cooking operation.

[0064] In this embodiment, when the box 2 is in the second position, the distance between the box 2 and the shell 1 is 100mm. That is to say, when the box 2 is opened to the maximum, the overall thickness is 100mm. The box 2 is made of thin plate.

[0065] Of course, in other embodiments, the housing 2 can also be set to other sizes, which will not be elaborated here.

[0066] In this embodiment, as Figure 3 As shown, the air inlet 2011 is located on the bottom wall of the housing 2. By placing the air inlet 2011 at the bottom of the housing 2, the air inlet 2011 is closer to the location where the oil fumes are generated, and the oil fumes can be drawn in more quickly.

[0067] Specifically, the air inlet cavity 201 inside the housing 2 is a flat cuboid, and the widest side of the housing 2 is parallel to the first wall 11, which is the front wall of the housing 2.

[0068] Of course, in other embodiments, the air inlet 2011 can also be located in other positions, such as on the front wall parallel to the first wall 11, or on both the front wall and the bottom wall, which will not be elaborated here.

[0069] In this embodiment, the housing 2 moves between a first position and a second position by folding. Moving the housing 2 between the first and second positions by folding saves space; the space occupied by the housing 2 when it is in the second position (suction of fumes) is the maximum space occupied by the housing 2.

[0070] Specifically, the side panel of the housing 2 is foldable, and the range hood 100 is equipped with a connecting rod that passes through and connects to the front wall of the housing 2. The connecting rod can extend and retract along the front and rear direction of the housing 2, thereby causing the housing 2 to fold or open.

[0071] Of course, in other embodiments, the housing 2 can also be folded using other folding structures in the prior art, or switched between the first and second positions using other moving structures in the prior art, which will not be elaborated here.

[0072] In this embodiment, the range hood 100 also includes a fume sensor and a controller (not shown in the figure). The fume sensor is disposed in the air inlet chamber 201 and is used to detect the amount of fume in the air inlet chamber 201. The controller can control the housing 2 to move between a first position and a second position based on the detection signal from the fume sensor. By setting the fume sensor at the air inlet 2011, the movement of the housing 2 can be controlled through the signal feedback from the fume sensor, thus minimizing the space occupied by the housing 2 while ensuring the suction efficiency of the range hood 100.

[0073] Specifically, such as Figures 1-8 As shown, the mounting hole 101 includes a first mounting hole and a second mounting hole, and the housing 2 includes a first housing and a second housing. The first housing is disposed within the first mounting hole, and the second housing is disposed within the second mounting hole. By setting two housings 2, the two housings 2 can be configured to correspond to two cooktops 200, resulting in better smoke extraction.

[0074] Meanwhile, the range hood 100 also includes a first oil fume sensor, a second oil fume sensor, and a controller. The first oil fume sensor is installed in the first housing, and the second oil fume sensor is installed in the second housing. The controller can control the movement of the first housing and the second housing based on the detection signals from the first and second oil fume sensors.

[0075] The specific control principle of the controller is as follows: When both burners are in use, both housings 2 are open. When only one burner is in use, in response to the oil fume concentration at the air inlet 2011 corresponding to the burner being in use being greater than the set concentration, and the oil fume concentration at the other air inlet 2011 being less than the set concentration, both the first and second housings are opened, and the opening degree of the housing 2 corresponding to the air inlet 2011 with the higher oil fume concentration is greater than the opening degree of the housing 2 corresponding to the air inlet 2011 with the lower oil fume concentration. Specifically, the opening degree of the housing 2 corresponding to the air inlet 2011 with the lower oil fume concentration can be set to about 60% to 70% of the opening degree of the housing 2 corresponding to the air inlet 2011 with the higher oil fume concentration; in response to the oil fume concentration at the air inlet 2011 corresponding to the burner being in use being less than the set concentration, the housing 2 corresponding to the burner being in use is opened, and the other housing 2 is closed.

[0076] Of course, in other embodiments, the user 300 can also manually adjust the opening of the box 2 according to their own judgment, which will not be elaborated here.

[0077] In this embodiment, the first wall surface 11 includes a first part 111 and a second part 112. The first part 111 is inclined downwards and backwards, and an air inlet 2011 is disposed on the first part 111. The second part 112 is connected to the bottom end of the first part 111 and is disposed vertically. An auxiliary air inlet 2011 connected to the ventilation duct 104 is disposed on the second part 112. By providing the auxiliary air inlet 2011, the smoke extraction effect of the range hood 100 can be enhanced.

[0078] Specifically, the auxiliary air inlet 2011 has a left-right extension length L ≥ 800mm and a vertical extension width W ≤ 20mm. The left-right direction refers to the direction when the range hood 100 is installed in the kitchen and the user 300 is cooking. For a typical double-burner stove 200, the distance between the two burners is approximately 800mm. By setting the air inlet 2011 at a distance of 800mm or more, it can effectively extract the fumes generated at both burners.

[0079] Of course, in other embodiments, the size of the auxiliary air inlet 2011 can also be adjusted according to the overall size and the corresponding compatible stove 200 and cookware 400, which will not be elaborated here.

[0080] At the same time, such as Figures 9-12 The range hood 100 also includes a fan system, which is installed in the air duct 104. The fan system includes a dual-inlet impeller 32. The axial width dimension A of the impeller is between two and three times the outer diameter D of the impeller. By setting the axial width dimension A of the dual-inlet impeller 32 to between two and three times the outer diameter D of the dual-inlet impeller 32, the effective axial distance for work is increased after the airflow enters the dual-inlet impeller 32, thereby increasing the air volume and air pressure. At the same time, according to the sixth power relationship between circumferential speed and noise, the aerodynamic noise can be reduced by reducing the circumferential speed of the dual-inlet impeller 32, thus achieving the purpose of increasing air volume and reducing noise.

[0081] Specifically, in this embodiment, the axial width dimension A of the double-inlet impeller 32 is 2.5 times the outer diameter D of the double-inlet impeller 32.

[0082] In this embodiment, the fan system also includes a volute 31, with dual-inlet impellers 32 disposed within the volute 31. Along the radial direction of the volute 31, the size of the volute 31 is smaller than the size of the air duct 104. A fan inlet 2011 is located at the fan inlet 2011, and a gap exists between the fan inlet 2011 and the inner wall of the air duct 104. By creating a gap between the fan inlet 2011 and the inner wall of the air duct 104, sufficient buffer space is ensured for the airflow entering the air duct 104, guaranteeing the uniformity of the intake airflow. Furthermore, the sound propagation path of the airflow is blocked.

[0083] In addition, the fan system also includes a motor 33, which is an external rotor motor. The motor 33 is coaxially mounted with the dual-inlet impeller 32, and the outer diameter of the motor 33 is between 0.35 and 0.5 times the outer diameter of the dual-inlet impeller 32. By setting the outer diameter of the motor 33 to between 0.35 and 0.5 times that of the dual-inlet impeller 32, both the power output of the motor 33 and the size of the motor 33 can be guaranteed, while ensuring that the size of the motor 33 does not interfere with the internal air intake.

[0084] Specifically, in this embodiment, the outer diameter of the motor 33 is set to be between 0.5 times that of the double-inlet impeller 32.

[0085] Of course, in other embodiments, the dimensions of the motor 33 and the impeller can also be adjusted according to the designed air volume and power, which will not be elaborated here.

[0086] The range hood 100 can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives commands from the user 300, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood 100 to perform corresponding operations, thereby realizing intelligent control of the range hood 100 and improving the user experience of the user 300.

[0087] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A range hood, the range hood comprising a housing, the housing having an air duct, characterized in that, The housing is designed to face the first wall of the stove, and the first wall has mounting holes that penetrate its wall thickness. The range hood also includes a housing, which is movably disposed at the mounting hole. The housing has an air inlet chamber, which has an air inlet and an air outlet. The air inlet is directed toward the burner of the stove, and the air outlet is connected to the air duct. The housing can switch between a first position and a second position. When the housing is in the first position, the housing is housed within the air duct, and the outer side of the housing is flush with the outer shell. When the housing is in the second position, the housing protrudes relative to the outer shell.

2. The range hood as described in claim 1, characterized in that, When the box is in the second position, the distance by which the box protrudes relative to the shell is H, where 80mm≤H≤120mm.

3. The range hood as described in claim 1, characterized in that, The air inlet is located on the bottom wall of the housing; And / or, the housing moves between the first position and the second position by folding.

4. The range hood as described in claim 1, characterized in that, The range hood also includes an oil fume sensor and a controller. The oil fume sensor is disposed in the air inlet cavity and is used to detect the amount of oil fume in the air inlet cavity. The controller can control the housing to move between the first position and the second position according to the detection signal of the oil fume sensor.

5. The range hood as described in claim 1, characterized in that, The mounting holes include a first mounting hole and a second mounting hole, and the housing includes a first housing and a second housing. The first housing is disposed in the first mounting hole, and the second housing is disposed in the second mounting hole.

6. The range hood as described in claim 5, characterized in that, The range hood also includes a first oil fume sensor, a second oil fume sensor, and a controller. The first oil fume sensor is disposed in the first housing, the second oil fume sensor is disposed in the second housing, and the controller can control the movement of the first housing and the second housing based on the detection signals of the first oil fume sensor and the second oil fume sensor.

7. The range hood as described in claim 1, characterized in that, The first wall surface includes a first part and a second part. The first part is inclined from top to bottom and backward, and the air inlet is disposed on the first part. The second part is connected to the bottom of the first part, the second part is arranged in a vertical direction, and an auxiliary air inlet connected to the air duct is provided on the second part.

8. The range hood as described in claim 7, characterized in that, The horizontal extension length L of the auxiliary air inlet is ≥800mm; And / or, the vertical extension width W of the auxiliary air inlet is ≤20mm.

9. The range hood as described in claim 1, characterized in that, The range hood also includes a fan system, which is installed in the air duct. The fan system includes a dual-inlet impeller, and the axial width dimension A of the impeller is between two and three times the outer diameter D of the impeller.

10. The range hood as described in claim 9, characterized in that, The fan system also includes a volute, the impeller is disposed inside the volute, the size of the volute is smaller than the size of the air duct along the radial direction of the volute, the fan inlet of the fan system is disposed at the inlet, and there is a gap between the fan inlet and the inner wall of the air duct. And / or, the fan system further includes a motor, which is coaxially arranged with the impeller, and the outer diameter of the motor is between 0.35 and 0.5 times the outer diameter of the impeller.

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