An air intake quantity distribution device, an oil fume suction machine, and an air intake quantity distribution method

Abstract

The present invention relates to the technical field of kitchen appliances, and discloses an air intake quantity distribution device, an oil fume extractor and an air intake quantity distribution method. The air intake quantity distribution device includes a spraying element, a ventilation assembly and a driving assembly. A spraying channel is arranged in the spraying element, and spraying ports are arranged on the side wall of the spraying channel. The ventilation assembly is used for introducing air into the spraying channel, and the driving assembly is used for driving the spraying element to rotate, so that the air introduced into the spraying channel is sprayed through the spraying ports into a first air intake cavity or a second air intake cavity to form an air barrier, thereby reducing the air intake quantity of the first air intake cavity and increasing the air intake quantity of the second air intake cavity, or reducing the air intake quantity of the second air intake cavity and increasing the air intake quantity of the first air intake cavity. The invention has the advantages of simple structure, convenient disassembly and assembly, easy cleaning, low cost, novel and unique air intake quantity distribution mode and good user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly to an air intake distribution device, a range hood, and an air intake distribution method. Background Art

[0002] The range hood is an essential appliance in the kitchen at present. Compared with the traditional range hood, the double-chamber range hood has the characteristics of better smoke extraction effect and lower noise, and is more and more popular among consumers.

[0003] The existing double-chamber range hood adopts two sets of electric air deflector mechanisms to independently control the air intake of the left and right chambers. However, this air intake distribution method has high cost, complex structure, the built-in oil screen is blocked by the electric air deflector mechanism, and it is not easy to disassemble and repair. The startup and shutdown of the two sets of electric air deflector mechanisms are independent of each other, and there is a sequence in actual use, resulting in poor user experience. Summary of the Invention

[0004] Based on the above problems, the purpose of the present invention is to provide an air intake distribution device, a range hood, and an air intake distribution method, which have simple structure, are convenient for disassembly and assembly, easy to clean, and low cost.

[0005] To achieve the above purpose, the following technical solutions are provided:

[0006] In a first aspect, the present invention provides an air intake distribution device for distributing the air intake of a first air intake chamber and a second air intake chamber, the total air intake of the first air intake chamber and the second air intake chamber being constant. The air intake distribution device includes:

[0007] A spraying element, in which a spraying channel is provided, and spraying ports are provided on the side wall of the spraying channel;

[0008] A ventilation component for introducing air into the spraying channel;

[0009] A driving component for driving the spraying element to rotate, so that the air introduced into the spraying channel is sprayed through the spraying ports into the first air intake chamber or the second air intake chamber to form an air barrier, thereby reducing the air intake of the first air intake chamber and increasing the air intake of the second air intake chamber, or reducing the air intake of the second air intake chamber and increasing the air intake of the first air intake chamber.

[0010] As an optional solution of the air intake distribution device provided by the present invention, the spraying port is a long strip-shaped port extending along the length direction of the spraying channel, or the spraying port includes a plurality of spraying holes distributed along the length direction of the spraying channel.

[0011] As an alternative to the air intake distribution device provided by the present invention, the injection direction of the injection port in the non-operating state is the vertically downward direction or the obliquely downward direction.

[0012] As an alternative to the air intake distribution device provided by the present invention, the ventilation component includes an outer cylinder body, a ventilation motor and a ventilation fan blade located inside the outer cylinder body. One end of the injection channel is the air intake end, and the other end of the injection channel is a closed end. The outer cylinder body is arranged at the air intake end of the injection channel, and the ventilation motor is used to drive the ventilation fan blade to rotate.

[0013] As an alternative to the air intake distribution device provided by the present invention, the air intake distribution device further includes a first mounting seat, a bearing is arranged on the first mounting seat, and a mounting shaft matched with the bearing is arranged on the ventilation motor.

[0014] As an alternative to the air intake distribution device provided by the present invention, the air intake distribution device further includes a first protective cover, the first protective cover covers the periphery of the first mounting seat and the ventilation component, and an air supplement port is arranged on the first protective cover.

[0015] As an alternative to the air intake distribution device provided by the present invention, the driving component includes a driving motor, a connecting sleeve is arranged on the injection element, and the output shaft of the driving motor is clamped with the connecting sleeve.

[0016] As an alternative to the air intake distribution device provided by the present invention, the air intake distribution device further includes a second mounting seat and a second protective cover, the driving motor is arranged on the second mounting seat, and the second protective cover covers the periphery of the second mounting seat and the driving motor.

[0017] In a second aspect, the present invention further provides a range hood, including the above-mentioned air intake distribution device.

[0018] As an alternative to the range hood provided by the present invention, it further includes a box body component and a duct component, and the air barrier is located in the area between the bottom of the box body component and the bottom of the duct component.

[0019] In a third aspect, the present invention further provides an air intake distribution method, using the above-mentioned air intake distribution device, including the following steps:

[0020] Inject air into the first air intake chamber and the second air intake chamber, and the total air intake of the first air intake chamber and the second air intake chamber is constant;

[0021] Drive the injection element to rotate a preset angle so that the injection port faces the first air intake chamber or the second air intake chamber;

[0022] Air is introduced into the injection channel. The air introduced into the injection channel is ejected through the injection port into the first intake cavity or the second intake cavity to form an air barrier. The air barrier blocks the air flow in the first intake cavity or the second intake cavity, thereby reducing the intake air volume of the first intake cavity and increasing the intake air volume of the second intake cavity, or reducing the intake air volume of the second intake cavity and increasing the intake air volume of the first intake cavity.

[0023] As an optional solution of the intake air volume distribution method provided by the present invention, the method further includes the following step: adjusting the introduction speed of the air in the injection channel.

[0024] The beneficial effects of the present invention are as follows:

[0025] The intake air volume distribution device provided by the present invention is used to distribute the intake air volume of the first intake cavity and the second intake cavity. When it is necessary to increase the intake air volume of the first intake cavity, the injection element is driven to rotate a preset angle by the driving component, so that the injection port of the injection element faces the second intake cavity. Air is introduced into the injection channel of the injection element through the ventilation component. The air introduced into the injection channel is ejected through the injection port into the second intake cavity to form an air barrier. The air barrier blocks the air flow in the second intake cavity. Since the total intake air volume of the first intake cavity and the second intake cavity is constant, the intake air volume of the second intake cavity is reduced and the intake air volume of the first intake cavity is increased. The intake air volume distribution device provided by the present invention has a simple structure, is convenient to disassemble and assemble, is easy to clean, has a low cost, has a novel and unique intake air volume distribution method, and has a good user experience. Only by driving the injection element to rotate a preset angle can the intake air volume distribution requirements of the first intake cavity and the second intake cavity be met, and there is no need to set two sets of intake air volume control structures to separately control the intake air volume of the first intake cavity and the second intake cavity.

[0026] The range hood provided by the present invention includes the above-mentioned intake air volume distribution device, has a simple structure, is convenient to disassemble and assemble, is easy to clean, has a low cost, has a novel and unique intake air volume distribution method, and has a good user experience. Only by driving the injection element to rotate a preset angle can the intake air volume distribution requirements of the first intake cavity and the second intake cavity be met, and there is no need to set two sets of intake air volume control structures to separately control the intake air volume of the first intake cavity and the second intake cavity.

[0027] The air intake distribution method provided by the present invention uses the above-mentioned air intake distribution device. First, air is introduced into the first air intake chamber and the second air intake chamber, and the total air intake of the first air intake chamber and the second air intake chamber is constant. Secondly, the injection element is driven to rotate a preset angle so that the injection port faces the first air intake chamber or the second air intake chamber. Then, air is introduced into the injection channel, and the air introduced into the injection channel is ejected through the injection port into the first air intake chamber or the second air intake chamber to form an air barrier. Finally, the air barrier blocks the air flow in the first air intake chamber or the second air intake chamber, thereby reducing the air intake of the first air intake chamber and increasing the air intake of the second air intake chamber, or reducing the air intake of the second air intake chamber and increasing the air intake of the first air intake chamber. The air intake distribution method provided by the present invention has a simple and convenient control method, is easy to implement, has a low cost, has a novel and unique air intake distribution method, and has a good user experience. Only by driving the injection element to rotate a preset angle can the air intake distribution requirements of the first air intake chamber and the second air intake chamber be met, and there is no need to set up two sets of air intake control structures to control the air intake of the first air intake chamber and the second air intake chamber respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0029] Figure 1 is a schematic structural diagram of the air intake distribution device provided by the specific embodiment of the present invention;

[0030] Figure 2 is an exploded schematic diagram of the air intake distribution device provided by the specific embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of the injection element in the air intake distribution device provided by the specific embodiment of the present invention from the first perspective;

[0032] Figure 4 is a schematic structural diagram of the injection element in the air intake distribution device provided by the specific embodiment of the present invention from the second perspective;

[0033] Figure 5 is a schematic structural diagram of the air intake distribution device (with the injection port facing downwards) provided by the specific embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of the ventilation component in the air intake distribution device provided by the specific embodiment of the present invention from the first perspective;

[0035] Figure 7It is a schematic structural view of the ventilation component in the air intake distribution device provided by the specific embodiment of the present invention from the second perspective;

[0036] Figure 8 It is a schematic structural view of the first mounting base in the air intake distribution device provided by the specific embodiment of the present invention;

[0037] Figure 9 It is a schematic structural view of the first protective cover in the air intake distribution device provided by the specific embodiment of the present invention;

[0038] Figure 10 It is a schematic structural view of the range hood including the air intake distribution device provided by the specific embodiment of the present invention;

[0039] Figure 11 It is a schematic principle view of the range hood including the air intake distribution device provided by the specific embodiment of the present invention;

[0040] Figure 12 It is a schematic structural view of the area where the air barrier of the range hood including the air intake distribution device provided by the specific embodiment of the present invention is located.

[0041] In the figure:

[0042] 100 - air intake distribution device; 200 - air barrier; 300 - first air intake chamber; 400 - second air intake chamber;

[0043] 500 - box body assembly; 600 - air duct assembly; 700 - smoke collecting hood assembly; 800 - filter screen; 900 - left cooking pot;

[0044] 110 - injection element; 120 - ventilation component; 130 - drive component; 140 - first mounting base; 150 - first

[0045] protective cover; 160 - second mounting base; 170 - second protective cover;

[0046] 111 - injection channel; 112 - injection port; 113 - connecting sleeve; 114 - connecting groove;

[0047] 121 - outer cylinder; 122 - ventilation motor; 123 - ventilation fan blade; 124 - mounting shaft;

[0048] 131 - drive motor; 132 - output shaft;

[0049] 141 - bearing; 142 - seat body; 143 - ear plate; 144 - connecting hole;

[0050] 151 - air supplement port. Specific Embodiment

[0051] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0053] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] As Figures 1 to 12 shown, this embodiment provides an air intake quantity distribution device 100 for distributing the air intake quantity of the first air intake cavity 300 and the second air intake cavity 400, and the total air intake quantity of the first air intake cavity 300 and the second air intake cavity 400 is constant. The air intake quantity distribution device 100 includes a spraying element 110, a ventilation component 120, and a driving component 130. A spraying channel 111 is provided inside the spraying element 110 (as Figure 3 shown), and spraying ports 112 are provided on the side wall of the spraying channel 111. The ventilation component 120 is used to introduce air into the spraying channel 111. The driving component 130 is used to drive the spraying element 110 to rotate, so that the air introduced into the spraying channel 111 is sprayed into the first air intake cavity 300 or the second air intake cavity 400 through the spraying ports 112 to form an air barrier 200, thereby reducing the air intake quantity of the first air intake cavity 300 and increasing the air intake quantity of the second air intake cavity 400, or reducing the air intake quantity of the second air intake cavity 400 and increasing the air intake quantity of the first air intake cavity 300.

[0055] For example, the intake air volume distribution device 100 can be applied to a double-chamber range hood. The exhaust fan of the double-chamber range hood controls the total intake air volume of the first intake chamber 300 and the second intake chamber 400. When the power of the exhaust fan of the range hood is a fixed value, the total intake air volume of the first intake chamber 300 and the second intake chamber 400 is constant.

[0056] When it is necessary to increase the intake air volume of the first intake chamber 300, the injection element 110 is driven by the driving component 130 to rotate a preset angle, so that the injection port 112 of the injection element 110 faces the second intake chamber 400. Air is introduced into the injection channel 111 of the injection element 110 through the ventilation component 120. The air introduced into the injection channel 111 is ejected into the second intake chamber 400 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the air flow in the second intake chamber 400. Since the total intake air volume of the first intake chamber 300 and the second intake chamber 400 is constant, the intake air volume of the second intake chamber 400 is reduced and the intake air volume of the first intake chamber 300 is increased.

[0057] The intake air volume distribution device 100 only needs to drive the injection element 110 to rotate a preset angle to meet the intake air volume distribution requirements of the first intake chamber 300 and the second intake chamber 400. There is no need to set two sets of intake air volume control structures to control the intake air volume of the first intake chamber 300 and the second intake chamber 400 respectively. The structure is simple, easy to disassemble and assemble, easy to clean, low in cost, and the intake air volume distribution method is novel and unique, providing a good user experience.

[0058] In this embodiment, the injection port 112 is a long strip-shaped port extending along the length direction of the injection channel 111. The design of the long strip-shaped port facilitates the formation of a relatively wide and thin planar air barrier 200 when the air in the injection channel 111 passes through the long strip-shaped port. To ensure the air injection speed and thus form an air barrier 200 with a certain strength, optionally, the width of the long strip-shaped port is 1 mm - 5 mm. Preferably, the width of the long strip-shaped port is 2 mm.

[0059] In other embodiments, the injection port 112 may include a plurality of injection holes distributed along the length direction of the injection channel 111. When the air in the injection channel 111 is ejected from the injection holes, the gaps between adjacent two injection holes can be filled, and an air barrier 200 that blocks the air flow can be formed.

[0060] As Figure 5 shown, to prevent impurities (such as the oil stain of the range hood) from flowing into the injection port 112 in the non-working state, optionally, the injection direction of the injection port 112 in the non-working state is the vertical downward direction or the inclined downward direction.

[0061] To facilitate the control of the rotation angle of the injection element 110, the injection channel 111 can be cylindrical. The injection element 110 can be a tubular structure with one end open and the other end closed, reducing its own occupied space.

[0062] As Figure 6 and Figure 7 shown, the ventilation component 120 can include an outer cylinder 121, a ventilation motor 122 and a ventilation fan blade 123 located inside the outer cylinder 121. One end of the injection channel 111 is an air inlet end, and the other end of the injection channel 111 is a closed end. The outer cylinder 121 is arranged at the air inlet end of the injection channel 111. The ventilation motor 122 is used to drive the ventilation fan blade 123 to rotate. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, creating a negative pressure at the air inlet end of the injection channel 111. External air enters the injection channel 111 under the action of the negative pressure and is then ejected through the injection port 112. To reduce air resistance, optionally, the ventilation fan blade 123 is an axial flow fan blade.

[0063] As Figure 8 shown, to facilitate the installation of the ventilation motor 122, optionally, the air intake distribution device 100 further includes a first mounting seat 140. A bearing 141 is arranged on the first mounting seat 140, and a mounting shaft 124 cooperating with the bearing 141 is arranged on the ventilation motor 122. The first mounting seat 140 includes a seat body 142 and two ear plates 143 arranged on both sides of the bottom of the seat body 142. Connecting holes 144 are formed in the ear plates 143 for passing through fasteners, and the bearing 141 is embedded in the seat body 142. As Figure 2 and Figure 9 shown, to prevent impurities (such as the oil stain of the range hood) from entering the ventilation component 120, optionally, the air intake distribution device 100 further includes a first protective cover 150. The first protective cover 150 covers the periphery of the first mounting seat 140 and the ventilation component 120, and an air supplement port 151 is arranged on the first protective cover 150.

[0064] As Figure 2 shown, optionally, the driving component 130 includes a driving motor 131. A connecting sleeve 113 is arranged on the injection element 110, and the output shaft 132 of the driving motor 131 is clamped with the connecting sleeve 113. The end of the output shaft 132 of the driving motor 131 can be square-column shaped, and a connecting groove 114 for inserting the end of the output shaft 132 is arranged on the connecting sleeve 113. The connecting groove 114 can be a square groove, facilitating the transmission of the torque of the output shaft 132.

[0065] To improve the control accuracy of the rotation angle of the injection element 110, optionally, the drive motor 131 is a stepper motor. A stepper motor is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For each input pulse signal, the rotor rotates an angle or moves forward one step. Its output angular displacement or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency.

[0066] The biggest difference between a stepper motor and other motors for control purposes is that it receives a digital control signal (electrical pulse signal) and converts it into a corresponding angular displacement or linear displacement. It itself is an actuator that completes digital mode conversion. Moreover, it can perform open-loop position control. By inputting a pulse signal, a specified position increment can be obtained. Compared with the traditional DC control system, such a so-called incremental position control system has significantly reduced costs and almost no system adjustment is required. The angular displacement of the stepper motor is strictly proportional to the number of input pulses and is synchronized with the pulses in terms of time. Therefore, by controlling the number, frequency of the pulses, and the phase sequence of the motor windings, the required rotation angle, speed, and direction can be obtained.

[0067] To facilitate the installation of the drive motor 131 and prevent impurities (such as the oil stain of a range hood) from entering the drive motor 131, optionally, the air intake distribution device 100 further includes a second mounting seat 160 and a second protective cover 170. The drive motor 131 is disposed on the second mounting seat 160, and the second protective cover 170 covers the periphery of the second mounting seat 160 and the drive motor 131. The second protective cover 170 can be in a shed-like structure and cover the injection element 110 to improve the protection effect on the drive motor 131.

[0068] As Figure 10 and Figure 11 shown, to reduce the control difficulty, optionally, the air intake distribution device 100 is located at the intermediate position between the first air intake chamber 300 and the second air intake chamber 400. With such a setting, the control procedure for the rotation angle of the injection element 110 can be simplified.

[0069] The working process of the air intake distribution device 100 provided in this embodiment is generally as follows:

[0070] When it is necessary to increase the intake air volume of the first intake air cavity 300, the drive motor 131 drives the injection element 110 to rotate to a first preset angle, so that the injection port 112 of the injection element 110 faces the second intake air cavity 400. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and air is introduced into the injection channel 111 of the injection element 110. The air introduced into the injection channel 111 is ejected into the second intake air cavity 400 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the air flow in the second intake air cavity 400. Since the total intake air volume of the first intake air cavity 300 and the second intake air cavity 400 is constant, the intake air volume of the second intake air cavity 400 decreases and the intake air volume of the first intake air cavity 300 increases, meeting the oil fume suction requirement of the left cooker body 900.

[0071] When it is necessary to increase the intake air volume of the second intake air cavity 400, the drive motor 131 drives the injection element 110 to rotate to a second preset angle, so that the injection port 112 of the injection element 110 faces the first intake air cavity 300. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and air is introduced into the injection channel 111 of the injection element 110. The air introduced into the injection channel 111 is ejected into the first intake air cavity 300 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the air flow in the first intake air cavity 300. Since the total intake air volume of the first intake air cavity 300 and the second intake air cavity 400 is constant, the intake air volume of the first intake air cavity 300 decreases and the intake air volume of the second intake air cavity 400 increases, meeting the oil fume suction requirement of the right cooker body.

[0072] When the first intake air cavity 300 and the second intake air cavity 400 both have intake air requirements, the intake air volume distribution device 100 does not need to be started. If the intake air requirements of the first intake air cavity 300 and the second intake air cavity 400 are quite different, the intake air volume distribution device 100 can be started to adjust the power of the ventilation motor 122, so that the thickness of the air barrier 200 is smaller and the air flow blocking ability of the air barrier 200 is weakened.

[0073] The intake air volume distribution device 100 provided in this embodiment has a simple structure, is convenient for disassembly and assembly, is easy to clean, has a low cost, and has a novel and unique intake air volume distribution method, providing a good user experience. Only by driving the injection element 110 to rotate a preset angle can the intake air volume distribution requirements of the first intake air cavity 300 and the second intake air cavity 400 be met, without setting two sets of intake air volume control structures to separately control the intake air volume of the first intake air cavity 300 and the second intake air cavity 400.

[0074] As Figures 10 to 12As shown in the figure, this embodiment also provides a range hood, which includes the above-mentioned air intake distribution device 100. The range hood can be a double-chamber range hood, and the two fume suction chambers of the double-chamber range hood are respectively the above-mentioned first air intake chamber 300 and second air intake chamber 400. The exhaust fan of the double-chamber range hood controls the total air intake of the first air intake chamber 300 and the second air intake chamber 400. When the power of the exhaust fan of the range hood is a fixed value, the total air intake of the first air intake chamber 300 and the second air intake chamber 400 is constant. In other embodiments, with the improvement of living standards and the development of technology, a range hood with a three-chamber structure or a structure with more than three chambers may appear. It is only necessary to set the above-mentioned air intake distribution device 100 between adjacent two chambers.

[0075] As Figure 12 shown, optionally, the range hood further includes a cabinet assembly 500 and a duct assembly 600. The air barrier 200 is located in the area between the bottom of the cabinet assembly 500 and the bottom of the duct assembly 600, which can not only avoid the disorder of the internal air flow of the cabinet assembly 500, but also avoid increasing the air resistance of the air inlet of the duct assembly 600. In addition, the range hood further includes a smoke collecting hood assembly 700 and a filter net 800. The smoke collecting hood assembly 700 is installed at the bottom of the cabinet assembly 500, and the filter net 800 is installed in the smoke collecting hood assembly 700. The air intake distribution device 100 is installed at the middle position of the bottom of the smoke collecting hood assembly 700. The first mounting seat 140, the second mounting seat 160, the first protective cover 150 and the second protective cover 170 are respectively fixedly installed on the smoke collecting hood assembly 700 through fasteners such as screws, and then the injection element 110, the ventilation component 120 and the drive component 130 are installed.

[0076] For the range hood provided in this embodiment, the fume suction process is roughly as follows:

[0077] As Figure 11 shown, when the left cookware 900 has a fume suction requirement while the right cookware has no fume suction requirement, it is necessary to increase the air intake of the first air intake chamber 300 corresponding to the position of the left cookware 900. The drive motor 131 drives the injection element 110 to rotate to the first preset angle, so that the injection port 112 of the injection element 1 to face the second air intake chamber 400. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and introduces air into the injection channel 111 of the injection element 110. The air introduced into the injection channel 111 is sprayed into the second air intake chamber 400 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the air flow in the second air intake chamber 400. Since the total air intake of the first air intake chamber 300 and the second air intake chamber 400 is constant, the air intake of the second air intake chamber 400 decreases and the air intake of the first air intake chamber 300 increases, meeting the fume suction requirement of the left cookware 900.

[0078] When the right cooking pot has a demand for fume extraction while the left cooking pot 900 has no such demand, it is necessary to increase the air intake volume of the second air intake chamber 400 corresponding to the position of the right cooking pot. The driving motor 131 drives the spraying element 110 to rotate to a second preset angle, so that the spraying port 112 of the spraying element 110 faces the first air intake chamber 300. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and air is introduced into the spraying channel 111 of the spraying element 110. The air introduced into the spraying channel 111 is sprayed into the first air intake chamber 300 through the spraying port 112 to form an air barrier 200. The air barrier 200 blocks the air flow in the first air intake chamber 300. Since the total air intake volume of the first air intake chamber 300 and the second air intake chamber 400 is constant, the air intake volume of the first air intake chamber 300 decreases and the air intake volume of the second air intake chamber 400 increases, meeting the fume extraction demand of the right cooking pot.

[0079] When both the left cooking pot 900 and the right cooking pot have a demand for fume extraction, there is no need to start the air intake volume distribution device 100. If the difference in the fume extraction demands of the left cooking pot 900 and the right cooking pot is relatively large, the air intake volume distribution device 100 can be started to adjust the power of the ventilation motor 122, making the thickness of the air barrier 200 smaller and weakening the air flow blocking ability of the air barrier 200.

[0080] The range hood provided in this embodiment has a simple structure, is convenient for disassembly and assembly, easy to clean, has a low cost, and has a novel and unique air intake volume distribution method, providing a good user experience. Only by driving the spraying element 110 to rotate a preset angle can the air intake volume distribution demands of the first air intake chamber 300 and the second air intake chamber 400 be met, without setting two sets of air intake volume control structures to separately control the air intake volumes of the first air intake chamber 300 and the second air intake chamber 400.

[0081] This embodiment also provides an air intake volume distribution method, which uses the above air intake volume distribution device 100. The air intake volume distribution method includes the following steps:

[0082] Air is introduced into the first air intake chamber 300 and the second air intake chamber 400, and the total air intake volume of the first air intake chamber 300 and the second air intake chamber 400 is constant;

[0083] The spraying element 110 is driven to rotate a preset angle so that the spraying port 112 faces the first air intake chamber 300 or the second air intake chamber 400;

[0084] Air is introduced into the spraying channel 111, and the air introduced into the spraying channel

[0085] To further adjust the thickness of the air barrier 200, thereby adjusting the airflow blocking degree of the air barrier 200, optionally, the air intake distribution method further includes the following steps: adjusting the air inlet speed in the injection channel 111. Specifically, adjusting the power of the ventilation motor 122 can indirectly adjust the air inlet speed in the injection channel 111, or partially blocking the air inlet end of the injection channel 111, or adjusting the opening size of the air supplement port 151 of the first protective cover 150.

[0086] Taking the application to a double - chamber range hood as an example, the specific implementation process of this air intake distribution method is as follows:

[0087] As Figure 11 shown, when the left cooking pot 900 has a demand for fume extraction and the right cooking pot has no fume extraction demand, it is necessary to increase the air intake of the first intake cavity 300 corresponding to the position of the left cooking pot 900. The driving motor 131 drives the injection element 110 to rotate to a first preset angle, so that the injection port 112 of the injection element 110 faces the second intake cavity 400. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and introduces air into the injection channel 111 of the injection element 110. The air introduced into the injection channel 111 is sprayed into the second intake cavity 400 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the airflow in the second intake cavity 400. Since the total air intake of the first intake cavity 300 and the second intake cavity 400 is constant, the air intake of the second intake cavity 400 decreases and the air intake of the first intake cavity 300 increases, meeting the fume extraction demand of the left cooking pot 900.

[0088] When the right cooking pot has a demand for fume extraction and the left cooking pot 900 has no fume extraction demand, it is necessary to increase the air intake of the second intake cavity 400 corresponding to the position of the right cooking pot. The driving motor 131 drives the injection element 110 to rotate to a second preset angle, so that the injection port 112 of the injection element 110 faces the first intake cavity 300. The ventilation motor 122 drives the ventilation fan blade 123 to rotate, and introduces air into the injection channel 111 of the injection element 110. The air introduced into the injection channel 111 is sprayed into the first intake cavity 300 through the injection port 112 to form an air barrier 200. The air barrier 200 blocks the airflow in the first intake cavity 300. Since the total air intake of the first intake cavity 300 and the second intake cavity 400 is constant, the air intake of the first intake cavity 300 decreases and the air intake of the second intake cavity 400 increases, meeting the fume extraction demand of the right cooking pot.

[0089] When both the left pot body 900 and the right pot body have the need for oil fume extraction, there is no need to start the air intake amount distribution device 100. If the difference in the oil fume extraction needs between the left pot body 900 and the right pot body is relatively large, the air intake amount distribution device 100 can be started to adjust the power of the ventilation motor 122, so that the thickness of the air barrier 200 is smaller, weakening the airflow blocking ability of the air barrier 200.

[0090] The air intake amount distribution method provided in this embodiment has a simple and convenient control method, is easy to implement, has a low cost, and has a novel and unique air intake amount distribution method, providing a good user experience. Only by driving the injection element 110 to rotate a preset angle can the air intake amount distribution requirements of the first air intake chamber 300 and the second air intake chamber 400 be met, without setting two sets of air intake amount control structures to separately control the air intake amounts of the first air intake chamber 300 and the second air intake chamber 400.

[0091] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An air intake distribution device, characterized in that: The air intake distribution device is used to distribute the air intake amount of the first air intake cavity (300) and the second air intake cavity (400), wherein the total amount of air intake of the first air intake cavity (300) and the second air intake cavity (400) is constant, and the air intake distribution device comprises: An injection element (110), the injection element (110) being a tubular structure with one end open and the other end closed, an injection channel (111) being provided in the injection element (110), and an injection port (112) being provided on a side wall of the injection channel (111); a ventilation assembly (120), configured to introduce air into the injection channel (111); The driving assembly (130) is used to drive the injection element (110) to rotate so that the air introduced into the injection channel (111) is injected into the first air inlet cavity (300) or the second air inlet cavity (400) through the injection port (112) to form an air barrier (200), thereby reducing the air intake volume of the first air inlet cavity (300) and increasing the air intake volume of the second air inlet cavity (400), or reducing the air intake volume of the second air inlet cavity (400) and increasing the air intake volume of the first air inlet cavity (300).

2. The air intake distribution device according to claim 1, characterized in that: The injection port (112) is a long strip extending along the length direction of the injection channel (111), or the injection port (112) includes a plurality of injection holes distributed along the length direction of the injection channel (111).

3. The air intake distribution device according to claim 1, characterized in that: The spraying direction of the spray port (112) in a non-working state is a vertically downward direction or an obliquely downward direction.

4. The air intake distribution device according to claim 1, characterized in that: The ventilation assembly (120) comprises an outer cylinder (121), a ventilation motor (122) and ventilation blades (123) located within the outer cylinder (121); one end of the injection channel (111) is an air inlet end, and the other end of the injection channel (111) is a closed end; the outer cylinder (121) is arranged at the air inlet end of the injection channel (111); and the ventilation motor (122) is used to drive the ventilation blades (123) to rotate.

5. The air intake distribution device according to claim 4, characterized in that: The air intake distribution device further comprises a first mounting seat (140), a bearing (141) being provided on the first mounting seat (140), and a mounting shaft (124) cooperating with the bearing (141) being provided on the ventilation motor (122).

6. The air intake distribution device according to claim 5, characterized in that: The air intake distribution device further comprises a first protective cover (150), the first protective cover (150) being arranged on the periphery of the first mounting seat (140) and the ventilation assembly (120), and an air supply port (151) being provided on the first protective cover (150).

7. The air intake distribution device according to any one of claims 1 to 6, characterized in that: The driving assembly (130) includes a driving motor (131), a connecting sleeve (113) is provided on the injection element (110), and an output shaft (132) of the driving motor (131) is engaged with the connecting sleeve (113).

8. The air intake distribution device according to claim 7, characterized in that: The air intake distribution device further comprises a second mounting seat (160) and a second protective cover (170), the drive motor (131) is arranged on the second mounting seat (160), and the second protective cover (170) is arranged around the second mounting seat (160) and the drive motor (131).

9. A range hood, characterized in that: It comprises the air intake distribution device according to any one of claims 1 to 8.

10. The range hood according to claim 9, characterized in that: It also includes a box assembly (500) and an air duct assembly (600), wherein the air barrier (200) is located in the area between the bottom of the box assembly (500) and the bottom of the air duct assembly (600).

11. A method for distributing intake air, characterized in that: Using the air intake distribution device according to any one of claims 1 to 8, the air intake distribution method comprises the following steps: Air is introduced into the first air inlet cavity (300) and the second air inlet cavity (400), and the total amount of air intake in the first air inlet cavity (300) and the second air inlet cavity (400) is constant; driving the injection element (110) to rotate at a preset angle so that the injection port (112) faces the first air inlet cavity (300) or the second air inlet cavity (400); Air is introduced into the injection channel (111), and the air introduced into the injection channel (111) is injected into the first air inlet cavity (300) or the second air inlet cavity (400) through the injection port (112) to form an air barrier (200). The air barrier (200) blocks the airflow in the first air inlet cavity (300) or the second air inlet cavity (400), thereby reducing the air intake amount of the first air inlet cavity (300) and increasing the air intake amount of the second air inlet cavity (400), or reducing the air intake amount of the second air inlet cavity (400) and increasing the air intake amount of the first air inlet cavity (300).

12. The intake air distribution method according to claim 11, characterized in that: The following steps are also included: The speed at which air is introduced into the injection channel (111) is adjusted.

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