A range hood

Abstract

The present invention relates to the technical field of kitchen appliances, and in particular to a range hood. The range hood provided by an embodiment of the present invention includes a range hood body, a blowing assembly, and a wireless power supply assembly. The range hood body is provided with a first magnetic member, and the blowing assembly is provided with a second magnetic member with a polarity opposite to that of the first magnetic member. The blowing assembly is connected to the range hood body through the magnetic attraction of the first magnetic member and the second magnetic member. The blowing assembly operates in a wireless power supply manner and can therefore be disassembled or installed at any time. The blowing assembly is easy to maintain and replace, and users can flexibly choose whether to install the blowing assembly according to their needs, resulting in a better user experience. The blowing assembly is installed on the outside of the range hood body and does not occupy the internal space of the range hood body, making the structure of the range hood body more compact and reducing material costs. There is no need to drill a hole in the range hood body to install a fan, and the appearance of the range hood body is more complete and more beautiful.

Description

Technical Field

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

[0002] Normally, electric fans are not installed in the kitchen in order not to affect the flames. When people cook in the kitchen in the hot summer, they sweat profusely and feel very hot, especially in the summer, which is even more unbearable. In order to overcome the above problems, some range hood products use a fan installed in the range hood to dissipate heat. The fan is fixed in the range hood housing through a universal arm. An air outlet is provided on the housing. The fan faces the air outlet. The air outlet direction of the fan can be adjusted by the universal arm. The air blown by the fan will not blow the flames below and will not affect cooking. At the same time, it can blow air towards the cook, alleviating the problem of excessively high ambient temperature during cooking.

[0003] However, fan installation requires drilling a hole in the range hood cavity, which affects the integrity and aesthetics of the range hood's appearance and also increases the size of the range hood. At the same time, the fan is fixedly installed in the range hood casing, making maintenance and replacement difficult. Moreover, regardless of whether the fan is needed, it is fixed on the range hood, and cannot be flexibly selected according to user needs. Summary of the Invention

[0004] (1) The technical problem to be solved by the present invention is that an installation cavity is provided inside the existing range hood, and the fan is installed in the range hood housing, which affects the integrity and aesthetics of the range hood appearance and is difficult to repair and replace.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a range hood, including: a range hood body, a blowing component and a wireless power supply component, the range hood body is provided with a first magnetic part, the blowing component is provided with a second magnetic part with opposite polarity to the first magnetic part, the wireless power supply component is used to provide electrical energy to the blowing component, and the blowing component is connected to the range hood body through the magnetic attraction between the first magnetic part and the second magnetic part.

[0007] According to one embodiment of the present invention, the range hood body includes a main unit, a control circuit board and a panel, the main unit has an assembly surface, a mounting opening is provided on the assembly surface, the control circuit board is located in the mounting opening, the panel covers the assembly surface and is connected to the main unit, and the blowing assembly is connected to the panel through the magnetic attraction between the first magnetic part and the second magnetic part.

[0008] According to one embodiment of the present invention, the range hood body also includes a first shell, the control circuit board is installed in the first shell, the first shell on which the control circuit board is installed is connected to the panel and embedded in the installation opening; the first magnetic part is installed on the first shell.

[0009] According to one embodiment of the present invention, the blowing assembly includes a shell, a base and a fan, a accommodating cavity is formed in the shell, the fan is installed in the accommodating cavity, an air inlet connected to the accommodating cavity is provided on the side wall of the shell, the second magnetic part is installed on the base, and the base covers one end of the shell.

[0010] According to one embodiment of the present invention, at least two second magnetic members are provided on the base; and at least two second magnetic members are distributed on the same circumference;

[0011] At least two first magnetic members are provided on the first shell, and the at least two first magnetic members are distributed on the same circumference;

[0012] The circumference of at least two of the second magnetic components and the circumference of at least two of the first magnetic components have the same central axis, and the distance from any one of the first magnetic components to the central axis is equal to the distance from any one of the second magnetic components to the central axis.

[0013] According to one embodiment of the present invention, four second magnetic members are provided on the base, and the four second magnetic members are evenly distributed on the same circumference;

[0014] Three first magnetic members are provided on the first shell, and a line connecting the three first magnetic members forms an isosceles right triangle.

[0015] According to one embodiment of the present invention, the range hood further comprises an adjustment component, and the adjustment component is used to adjust the operating power of the fan, or adjust the operating power of the fan and the range hood body;

[0016] The adjustment assembly includes a first Hall sensor, a second Hall sensor, and at least two third magnetic members; the distance between the first Hall sensor and the central axis is equal to the distance between the second magnetic member and the central axis, and the distance between the second Hall sensor and the central axis is equal to the distance between the third magnetic member and the central axis;

[0017] The central angle of two adjacent third magnetic members is twice the central angle of two adjacent second magnetic members.

[0018] According to one embodiment of the present invention, the fan has a first gear and a second gear;

[0019] When the position of one of the second magnetic members corresponds to the position of the first Hall sensor, and the position of one of the third magnetic members corresponds to the position of the second Hall sensor, the fan is in the first gear position;

[0020] When one of the second magnetic members is opposite to the first Hall sensor, and at least two of the third magnetic members are interlaced with the second Hall sensor, the fan is in the second gear.

[0021] According to one embodiment of the present invention, the fan and the range hood body both have a first gear position and a second gear position;

[0022] When the position of one of the second magnetic members corresponds to the position of the first Hall sensor, and the position of one of the third magnetic members corresponds to the position of the second Hall sensor, the fan and the range hood body are both in the first gear position;

[0023] When one of the second magnetic members is positioned opposite the first Hall effect sensor, and at least two of the third magnetic members are positioned opposite the second Hall effect sensors, the fan and the range hood body are both in the second gear position. According to one embodiment of the present invention, the number of the second Hall effect sensors is less than the number of the first magnetic members, and the sum of the number of the second Hall effect sensors and the number of the first magnetic members is equal to the number of the second magnetic members.

[0024] According to one embodiment of the present invention, the third magnetic member is provided on the base, and the third magnetic member and the second magnetic member are located in the same plane;

[0025] Two third magnetic components are provided on the base, and the two third magnetic components are located on the same circumference and are symmetrical about the central axis.

[0026] According to one embodiment of the present invention, the first Hall sensor and the second Hall sensor are both provided on the control circuit board;

[0027] The first shell is provided with openings at positions corresponding to the first Hall sensor and the second Hall sensor, and the openings pass through the first shell.

[0028] According to one embodiment of the present invention, the wireless power supply component includes a receiving induction coil and a transmitting induction coil, the receiving induction coil is provided on the blowing component, and the transmitting induction coil is provided on the range hood body.

[0029] According to one embodiment of the present invention, the blowing assembly also includes a receiving induction control board, the receiving induction coil is arranged on the receiving induction control board and is electrically connected to the receiving induction control board, and the receiving induction control board is used to transmit the current generated by the receiving induction coil to the fan and control the fan.

[0030] According to one embodiment of the present invention, the transmitting induction coil is provided on the control circuit board and is electrically connected to the control circuit board.

[0031] According to one embodiment of the present invention, the outer shell is a cylindrical structure with openings at both ends, a partition is provided inside the outer shell, the partition divides the accommodating cavity into a first cavity and a second cavity, and the receiving sensing control board is arranged in the second cavity; the fan is installed in the first cavity, and an air outlet connected to the first cavity is provided on the side wall of the outer shell.

[0032] According to one embodiment of the present invention, the blowing assembly further includes a cover plate, which covers the open end of the first cavity, and is provided with an air outlet communicating with the first cavity.

[0033] Beneficial effects of the present invention: The range hood provided by the embodiment of the present invention includes a range hood body, a blowing assembly and a wireless power supply assembly, the range hood body is provided with a first magnetic part, the blowing assembly is provided with a second magnetic part with a polarity opposite to that of the first magnetic part, the blowing assembly is connected to the range hood body by the magnetic attraction of the first magnetic part and the second magnetic part, and the blowing assembly is operated in a wireless power supply manner, so it can be disassembled or installed at any time, the blowing assembly is easy to maintain and replace, and the user can flexibly choose whether to install the blowing assembly according to needs, which is more convenient to use and the user experience is better. The blowing assembly is installed on the outside of the range hood body and does not occupy the internal space of the range hood body, making the structure of the range hood body more compact, reducing material costs, and there is no need to drill a hole in the range hood body to install the fan, so the appearance of the range hood body is more complete and more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A three-dimensional diagram of a range hood provided in accordance with an embodiment of the present invention;

[0036] Figure 2An exploded view of a range hood provided in accordance with an embodiment of the present invention;

[0037] Figure 3 A three-dimensional diagram of a control circuit board provided in accordance with an embodiment of the present invention;

[0038] Figure 4 A perspective view of a first housing provided in accordance with an embodiment of the present invention;

[0039] Figure 5 A perspective view of a base provided for one embodiment of the present invention;

[0040] Figure 6 A perspective view of a receiving sensing control panel provided in accordance with an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of the positional relationship between the second magnetic member and the third magnetic member on the base in the first gear state in one embodiment of the present invention;

[0042] Figure 8 Schematic diagram of the positional relationship between the first magnetic member, the first Hall sensor, and the second Hall sensor on the first housing in the first gear state in one embodiment of the present invention;

[0043] Figure 9 Schematic diagram of the positional relationship between the second magnetic member and the third magnetic member on the base in the second gear state in one embodiment of the present invention;

[0044] Figure 10 Schematic diagram of the positional relationship between the first magnetic member, the first Hall sensor, and the second Hall sensor on the first housing in the first gear state in one embodiment of the present invention;

[0045] Figure 11 Schematic diagram of the structure of the housing in one embodiment of the present invention.

[0046] Icons: 1-range hood body; 11-main unit; 111-assembly surface; 1111-mounting port; 112-control circuit board; 1121-transmitting induction coil; 1122-button; 1123-first Hall effect sensor; 1124-second Hall effect sensor; 113-first housing; 1131-first magnetic component; 1132-opening; 114-panel;

[0047] 2-blowing assembly; 21-base; 211-second magnetic component; 212-third magnetic component; 22-housing; 221-air inlet; 23-fan; 24-cover; 241-air outlet; 25-receiving induction control board; 251-receiving induction coil. DETAILED DESCRIPTION

[0048] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] like Figures 1 to 11 As shown, one embodiment of the present invention provides a range hood, which includes a range hood body 1, a blowing assembly 2 and a wireless power supply assembly. The range hood body 1 is provided with a first magnetic part 1131, and the blowing assembly 2 is provided with a second magnetic part 211 with a polarity opposite to that of the first magnetic part 1131. The wireless power supply assembly is used to provide electrical energy to the blowing assembly 2, and the blowing assembly 2 is connected to the range hood body 1 through the magnetic attraction between the first magnetic part 1131 and the second magnetic part 211.

[0050] The range hood provided by the embodiment of the present invention includes a range hood body 1, a blowing assembly 2 and a wireless power supply assembly. The range hood body 1 is provided with a first magnetic part 1131, and the blowing assembly 2 is provided with a second magnetic part 211 with a polarity opposite to the first magnetic part 1131. The blowing assembly 2 is connected to the range hood body 1 by the magnetic attraction between the first magnetic part 1131 and the second magnetic part 211, and the blowing assembly 2 is operated in a wireless power supply manner, so it can be disassembled or installed at any time. The blowing assembly 2 is easy to maintain and replace, and the user can flexibly choose whether to install the blowing assembly 2 according to needs. It is more convenient to use and the user experience is better. The blowing assembly 2 is installed on the outside of the range hood body 1 and does not occupy the internal space of the range hood body 1, so that the structure of the range hood body 1 is more compact, reducing material costs, and there is no need to drill a hole in the range hood body 1 to install the fan 23. The appearance of the range hood body 1 is more complete and more beautiful.

[0051] According to one embodiment of the present invention, Figure 1 and 2As shown, the range hood body 1 includes a main unit 11, a control circuit board 112, and a panel 114. The main unit 11 has an assembly surface 111 with a mounting opening 1111 defined thereon. The control circuit board 112 is positioned within the mounting opening 1111. The panel 114 covers the assembly surface 111 and is connected to the main unit 11. The blower assembly 2 is connected to the panel 114 via the magnetic attraction between a first magnetic member 1131 and a second magnetic member 211. In this embodiment, the main unit 11 is a conventional range hood structure, generally comprising a fan base, an air duct motor assembly, a fume hood, an oil screen, an oil cup, and the like. The side of the host 11 facing the front end is the assembly surface 111 (that is, the side facing the user), and a mounting opening 1111 is provided on the assembly surface 111. The control circuit board 112 is located in the mounting opening 1111. The control circuit board 112 does not protrude from the outside of the host 11, and the appearance of the entire machine is better. At the same time, a panel 114 is covered on the assembly surface 111. The panel 114 covers the assembly surface 111 and can cover the mounting opening 1111, which can further enhance the aesthetics of the appearance of the host 11.

[0052] When the user feels that the working environment in the kitchen is hot and needs to blow air, the blowing assembly 2 can be placed on the panel 114. Since the blowing assembly 2 is provided with a second magnetic part 211, the range hood body 1 is provided with a first magnetic part 1131, and the polarities of the first magnetic part 1131 and the second magnetic part 211 are opposite, the blowing assembly 2 can be fixed on the panel 114 by magnetic attraction. When cooking is completed or blowing is not needed, the blowing assembly 2 can be directly removed. The user can flexibly choose according to his or her needs. Figure 2 As shown, the control circuit board 112 of this embodiment is provided with a button 1122, which is a conventional range hood control button and can be used to control the range hood. In this embodiment, the panel 114 is a glass panel, which is a transparent structure and can better display the information on the control circuit board 112.

[0053] like Figure 2 and Figure 4 As shown, in this embodiment, the range hood body 1 further includes a first housing 113, in which a control circuit board is mounted. The first housing 113, with the control circuit board mounted thereon, is connected to a panel 114 and embedded in a mounting opening 1111. A first magnetic member 1131 is mounted on the first housing 113. Specifically, the control circuit board 112 is mounted in the first housing 113, which is bonded to a glass panel 114, which is then connected to the mounting surface 111 of the main unit 11.

[0054] According to one embodiment of the present invention, Figures 3 to 6As shown, the blowing assembly 2 includes a housing 22, a base 21, and a fan 23. The housing 22 forms a receiving cavity, and the fan 23 is installed in the receiving cavity. The side wall of the housing 22 is provided with an air inlet 221 connected to the receiving cavity. The second magnetic member 211 is mounted on the base 21, and the base 21 covers one end of the housing 22. The fan 23 includes blades and a motor. The wireless power supply assembly is electrically connected to the motor to provide electrical energy to the motor, which then drives the blades to rotate. Air enters the receiving cavity from the air inlet 221 and is then driven by the fan 23 to be blown toward the user from the air outlet 241, thereby alleviating the user's discomfort during cooking caused by the high temperature of the kitchen environment.

[0055] Optionally, in this embodiment, if Figure 11 As shown, the shell 22 is a cylindrical structure with openings 1132 at both ends. A partition is provided in the shell 22, which divides the accommodating cavity into a first cavity and a second cavity. The fan 23 is arranged in the first cavity, and an air outlet 241 connected to the first cavity is provided on the side wall of the shell 22. The air outlet 241 is evenly distributed in the axial direction of the shell 22. The air can enter the first cavity through the air outlet 241, and the blades are driven to rotate by the motor to blow out from the opening 1132 end of the shell 22 connected to the first cavity to the outside. The opening 1132 end of the shell 22 opposite to the other end of the base 21 is the air outlet 241. The air outlet 241 faces the user who is cooking, providing a cool cooking experience, and increasing the user's usage experience and fun.

[0056] Optional, such as Figure 2 As shown, in this embodiment, the blowing assembly 2 also includes a cover plate 24, which covers the opening 1132 end of the first cavity, and an air outlet 241 connected to the first cavity is provided on the cover plate 24. At this time, the air flow in the first cavity is blown to the outside through the air outlet 241 on the cover plate 24.

[0057] like Figure 2 、 Figure 3 and Figure 6 As shown, the wireless power supply assembly includes a receiving induction coil 251 and a transmitting induction coil 1121. The receiving induction coil 251 is located on the blower assembly 2, while the transmitting induction coil 1121 is located on the range hood body 1. Electromagnetic induction between the transmitting induction coil 1121 and the receiving induction coil 251 generates an electric current, which is transmitted to the blower 23, providing power for the blower 23. The combination of wireless power supply and magnetic attraction to connect the blower assembly 2 facilitates disassembly and installation, resolving the inconvenient disassembly and complex assembly associated with wired power supply.

[0058] like Figure 6As shown, the blowing assembly 2 also includes a receiving induction control board 25, a receiving induction coil 251 is provided on the receiving induction control board 25, and is electrically connected to the receiving induction control board 25, and the receiving induction control board 25 is used to transmit the current generated by the receiving induction coil 251 to the fan 23 and control the fan 23; optionally, the receiving induction control board 25 can transmit the generated induced current to the fan 23, and at the same time control the working power of the fan 23 by controlling the current intensity transmitted to the fan 23, thereby enabling the fan 23 to have a plurality of gear working modes (multiple working powers); optionally, as Figure 3 As shown, the transmitting induction coil 1121 is provided on the control circuit board 112 and is electrically connected to the control circuit board 112 , and the receiving induction control board 25 is fixed to the base 21 by screw connection.

[0059] According to one embodiment of the present invention, Figure 5 and Figure 6 As shown, at least two second magnetic members 211 are provided on the base 21; at least two second magnetic members 211 are distributed on the same circumference; at least two first magnetic members 1131 are provided on the first shell, at least two first magnetic members 1131 are distributed on the same circumference; the circumference of the at least two second magnetic members 211 and the circumference of the at least two first magnetic members 1131 have the same central axis, and the distance from any first magnetic member 1131 to the central axis is equal to the distance from any second magnetic member 211 to the central axis. The first magnetic member 1131 and the second magnetic member 211 have the same central axis, and the distance between the central axis of the first magnetic member 1131 is equal to the distance from the central axis of the second magnetic member 211. Therefore, when the base 21 rotates, at a certain moment, the position of at least one first magnetic member 1131 and the second magnetic member 211 correspond to each other, and the blowing assembly 2 can be connected to the range hood body 1 through the magnetic attraction between the first magnetic member 1131 and the second magnetic member 211.

[0060] According to one embodiment of the present invention, Figure 5 、 Figure 7 and Figure 9 As shown, the base 21 is provided with four second magnetic members 211, and the four second magnetic members 211 are evenly distributed on the same circumference; the first shell 113 is provided with three first magnetic members 1131, and the line connecting the three first magnetic members 1131 forms an isosceles right triangle. In this embodiment, the base 21 is provided with four second magnetic members 211, and the four second magnetic members 211 are distributed on the same circumference, and the central angle between two adjacent second magnetic members 211 is 90°; the first shell 113 is provided with three first magnetic members 1131, and the three first magnetic members 1131 are distributed on the same circumference, and the central angle between the first magnetic member 1131 located in the middle and the first magnetic members 1131 located on both sides is 90°.

[0061] When installing the hair-drying assembly 2, due to the magnetic attraction between the first magnetic part 1131 and the second magnetic part 211, the user can clearly feel the relative positions of the three first magnetic parts 1131 and three of the four second magnetic parts 211 when rotating the hair-drying assembly 2, which is convenient for the user to adjust; the hair-drying assembly 2 is fixed on the panel 114 by the magnetic attraction between the three first magnetic parts 1131 and the three second magnetic parts 211.

[0062] like Figure 2 As shown, the range hood also includes an adjustment component, which is used to adjust the operating power of the fan, or adjust the operating power of the fan and the range hood body; the adjustment component is electrically connected to the receiving sensing control board 25, or the adjustment component is electrically connected to the receiving sensing control board 25 and the control circuit board 112 at the same time; the corresponding adjustment component can adjust the gear position of the fan 23 or synchronously adjust the gear position of the fan 23 and the range hood body 1.

[0063] The adjustment assembly includes a first Hall sensor 1123, a second Hall sensor 1124, and at least two third magnetic members 212. The distance between the first Hall sensor 1123 and the central axis is equal to the distance between the second magnetic member 211 and the central axis, and the distance between the second Hall sensor 1124 and the central axis is equal to the distance between the third magnetic member 212 and the central axis. The central angle between two adjacent third magnetic members 212 is twice the central angle between two adjacent second magnetic members 211. In this embodiment, the first Hall sensor 1123 and the second Hall sensor 1124 are both Hall elements, generating a sensing signal through the Hall effect between the first Hall sensor 1123 and the second Hall sensor 1124. In this embodiment, the first Hall sensor 1123 and the second Hall sensor 1124 can both be Hall switches.

[0064] In this embodiment, the gear position of the fan can be adjusted by the adjusting component, or the gear positions of the fan and the range hood body 1 can be adjusted simultaneously by the adjusting component.

[0065] When the fan is adjusted individually; the fan has a first gear and a second gear. When a second magnetic part 211 corresponds to the position of the first Hall sensor 1123, and a third magnetic part 212 corresponds to the position of the second Hall sensor 1124, the fan is in the first gear; when a second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and at least two third magnetic parts 212 are staggered with the position of the second Hall sensor 1124, the fan is in the second gear.

[0066] When the fan and the range hood body 1 are adjusted at the same time; the fan and the range hood body 1 both have a first gear and a second gear. When a second magnetic part 211 corresponds to the position of the first Hall sensor 1123, and a third magnetic part 212 corresponds to the position of the second Hall sensor 1124, the fan and the range hood body 1 are both in the first gear; when a second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and at least two third magnetic parts 212 are staggered with the position of the second Hall sensor 1124, the fan and the range hood body 1 are both in the second gear.

[0067] In this embodiment, the fan gear position is adjusted, or the gear positions of the fan and range hood body 1 are adjusted simultaneously, by coordinating the first Hall effect sensor 1123 with the third magnetic member 212, and the second Hall effect sensor 1124 with the bracket of the third magnetic member 212. This, in turn, adjusts the fan's air volume and the power of the range hood body 1. This means adjusting the fan's speed and the speed of the suction fan within the range hood body 1. In this embodiment, the air volume of the blowing assembly 2 can be adjusted simultaneously with the adjustment component, and the air volume of the fan assembly and the operating power of the range hood body 1 can also be adjusted simultaneously with the adjustment component.

[0068] In this embodiment, the fan gear position control is achieved by the number of Hall sensors cooperating with the third magnetic part 212. In the above embodiment, both the first Hall sensor 1123 and the second Hall sensor 1124 are provided. When the first Hall sensor 1123 corresponds to the third magnetic part 212, and the position of the second Hall sensor 1124 corresponds to the position of the third magnetic part 212, the fan is in the first gear position; when a second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and at least two third magnetic parts 212 are staggered with the position of the second Hall sensor 1124, the fan is in the second gear position. Optionally, in this embodiment, the number of the first Hall sensor 1123 and the second Hall sensor 1124 is not limited to one, that is, the first Hall sensor 1123 and the second Hall sensor 1124 are each provided with multiple ones, and the gear position of the blowing component 2 can be adjusted accordingly by the sum of the number of the first Hall sensor 1123 and the second magnetic part 211 that cooperate with the third magnetic part 212 and the second Hall sensor 1124. In this embodiment, the number of the first Hall sensor 1123 and the second Hall sensor 1124 can be the same, for example, the first Hall sensor 1123 and the second Hall sensor 1124 are each provided with one, two or three, etc. The number of the first Hall sensor 1123 and the second Hall sensor 1124 can also be different, the number of the first Hall sensor 1123 is one, and the number of the second Hall sensor 1124 is two, three, four or five, etc.

[0069] According to one embodiment of the present invention, the number of second Hall sensors 1124 is less than the number of first magnetic members 1131, and the sum of the number of second Hall sensors 1124 and the number of first magnetic members 1131 is equal to the number of second magnetic members 211; when adjusting the gear position, a portion of the second magnetic members 211 is opposite to the position of the first magnetic member 1131, so that the blowing assembly 2 is connected to the range hood body 1, while the remaining second magnetic members 211 are opposite to the position of the first Hall sensor 1123. At this time, the gear position of the air outlet assembly can be adjusted by the sum of the number of the first magnetic member 1131 and the first Hall sensor 1123 and the number of the second magnetic member 211 and the third magnetic member 212. In this embodiment, the second magnetic member 211 can not only cooperate with the first magnetic member 1131 to fix the blowing assembly 2, but also cooperate with the first Hall sensor 1123 and then combine with the third magnetic member 212 and the second Hall sensor 1124 to adjust the gear position of the blowing assembly 2.

[0070] According to one embodiment of the present invention, Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 10 As shown. The adjustment component includes a first Hall sensor 1123, a second Hall sensor 1124 and two third magnetic members 212. The distance between the first Hall sensor 1123 and the central axis is equal to the distance between any second magnetic member 211 and the central axis. The three first magnetic members 1131 are located in the same first plane. The central angle between the projection point of the first Hall sensor 1123 in the first plane and the adjacent first magnetic member 1131 is 90°. The distance between the second Hall sensor 1124 and the central axis is equal to the distance between the third magnetic member 212 and the central axis. Figure 3 As shown, in order to avoid affecting the signal transmission and detection between the Hall sensor and the second magnetic part 211 and the third magnetic part 212, an opening 1132 is provided on the first shell 113 at positions corresponding to the first Hall sensor 1123 and the second Hall sensor 1124, and the opening 1132 passes through the first shell 113; preferably, an opening 1132 is also provided on the first shell 113 at positions corresponding to the transmitting induction coil 1121 and the button 1122.

[0071] In this embodiment, the blowing assembly 2 has two states when it is first placed, and the corresponding fan 23 and / or the range hood body 1 has two gears; Figure 7 and Figure 8As shown, three of the four second magnetic parts 211 correspond to the positions of the three first magnetic parts 1131 respectively, the blowing assembly 2 is fixed on the panel 114, the other second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and the third magnetic part 212 is opposite to the position of the second Hall sensor 1124. At this time, the first Hall sensor 1123 can sense the second magnetic part 211, and the second Hall sensor 1124 can sense the third magnetic part 212. The receiving sensing control board 25 receives the signals collected by the first Hall sensor 1123 and the second Hall sensor 1124 to control the fan 23 to be in the first gear (high power gear); or the receiving sensing control board 25 and the control circuit board 112 on the range hood receive the signals collected by the first Hall sensor 1123 and the second Hall sensor 1124 to control the fan 23 and / or the range hood body 1 to be in the first gear at the same time.

[0072] When three of the four second magnetic parts 211 correspond to the positions of the three first magnetic parts 1131 respectively, the blowing assembly 2 is fixed on the panel 114, the other second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and the third magnetic part 212 is staggered with the position of the second Hall sensor 1124. At this time, the first Hall sensor 1123 can sense the second magnetic part 211, and the second Hall sensor 1124 is staggered with the third magnetic part 212 and cannot sense the third magnetic part 212. The receiving sensing control board 25 receives the signals collected by the first Hall sensor 1123 and the second Hall sensor 1124 to control the fan 23 to be in the second gear (low power gear); or the receiving sensing control board 25 and the control circuit board 112 on the range hood receive the signals collected by the first Hall sensor 1123 and the second Hall sensor 1124 to control the fan 23 and / or the range hood body 1 to be in the second gear at the same time.

[0073] like Figure 5 、 Figure 7 and Figure 9 As shown, the third magnetic member 212 is provided on the base 21, and the third magnetic member 212 and the second magnetic member 211 are located in the same plane; two third magnetic members 212 are provided on the base 21, and the two third magnetic members 212 are located on the same circumference and are symmetrical about the central axis. The central angle between the four second magnetic members 211 is 90°, so the degree of rotation of the fan 23 assembly each time is also 90°. Since the two third magnetic members 212 are symmetrically arranged, assuming that the gear position of the fan 23 assembly is the first gear when it is initially installed, as shown in FIG. Figure 7 and Figure 8As shown, three of the four second magnetic parts 211 correspond to the positions of the three first magnetic parts 1131 respectively, the other second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and the third magnetic part 212 is opposite to the position of the second Hall sensor 1124; the first Hall sensor 1123 is opposite to the position of the second magnetic part 211, and can detect the magnetic field signal of the second magnetic part 211, thereby identifying the placement signal of the second magnetic part 211, and starting the fan 23 to rotate, and the fan 23 and / or the range hood is in the first gear.

[0074] If the user wants to adjust the gear position of the fan 23 and / or the range hood, the user can rotate the fan 23 component 90 degrees. Figure 9 and Figure 10 As shown, at this time, three of the four second magnetic parts 211 correspond to the positions of the three first magnetic parts 1131 respectively, the blowing component 2 is fixed on the panel 114, and the other second magnetic part 211 is opposite to the position of the first Hall sensor 1123. At this time, the first Hall sensor 1123 can sense the magnetic field signal of the second magnetic part 211, and the second Hall sensor 1124 is staggered with the third magnetic part 212 and cannot sense the magnetic field signal of the third magnetic part 212. There is no recognition of the placement signal. When it is rotated 90 degrees in the same direction again, it is adjusted back to the first gear, which makes the gear conversion of the fan 23 and / or the range hood simpler and more convenient. In this way, the gear size can be switched by the information of whether there is a signal.

[0075] Optionally, the first magnetic member 1131, the second magnetic member 211 and the third magnetic member 212 are all magnets, and the magnets are circular sheet-shaped structures. The diameters of the first magnetic member 1131, the second magnetic member 211 and the third magnetic member 212 can be the same or different; Figures 5 to 10 As shown, the distance between the third magnetic member 212 and the central axis is less than the distance between the second magnetic member 211 and the central axis, and the distance between the circumference of the third magnetic member 212 and the circumference of the first magnetic member 1131 is L, the radius of the second magnetic member 211 is R1, and the radius of the third magnetic member 212 is R2, L>R1+R2, so as to avoid interference between the second magnetic member 211 and the third magnetic member 212. Optionally, in this embodiment, the second magnetic member 211 and the third magnetic member 212 are embedded in the base 21, and the first magnetic member 1131 is embedded in the side of the first shell 113 facing the blowing assembly 2.

[0076] Taking the joint control of the fan 23 and the range hood body 1 as an example, the control method of the fan and the range hood body is as follows:

[0077] a. The blowing assembly 2 is fixed to the panel 114, such as Figure 7 and Figure 8As shown, the fan 23 assembly is rotated until three of the four second magnetic members 211 correspond to the positions of the three first magnetic members 1131, respectively, the other second magnetic member 211 is opposite to the position of the first Hall sensor 1123, and the third magnetic member 212 is opposite to the position of the second Hall sensor 1124; the first Hall sensor 1123 is opposite to the position of the second magnetic member 211, and can detect the magnetic field signal of the second magnetic member 211, thereby identifying the placement signal of the second magnetic member 211, and starting the fan 23 to rotate, and the fan 23 and the range hood are in the first gear position;

[0078] b. Figure 9 and Figure 10 As shown, the fan 23 assembly can be rotated 90°. At this time, three of the four second magnetic parts 211 correspond to the positions of the three first magnetic parts 1131 respectively, and the blowing assembly 2 is fixed on the panel 114. The other second magnetic part 211 is opposite to the position of the first Hall sensor 1123, and the position of the third magnetic part 212 is staggered with the second Hall sensor 1124. At this time, the first Hall sensor 1123 can sense the magnetic field signal of the second magnetic part 211, and the second Hall sensor 1124 is staggered with the third magnetic part 212 and cannot sense the magnetic field signal of the third magnetic part 212. The placement signal is not recognized, and the fan 23 and the range hood are in the second gear.

[0079] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: include: A range hood body (1), a blowing assembly (2), and a wireless power supply assembly, wherein the range hood body (1) is provided with a first magnetic member (1131), the blowing assembly (2) is provided with a second magnetic member (211) having a polarity opposite to that of the first magnetic member (1131), the wireless power supply assembly is used to provide electrical energy to the blowing assembly (2), and the blowing assembly (2) is connected to the range hood body (1) via the magnetic attraction between the first magnetic member (1131) and the second magnetic member (211); The blowing assembly (2) comprises a housing (22), a base (21) and a blower (23); At least two second magnetic members (211) are provided on the base (21); the at least two second magnetic members (211) are distributed on the same circumference; The range hood body (1) further comprises a first shell (113), wherein the first shell (113) is provided with at least two first magnetic members (1131), and the at least two first magnetic members (1131) are distributed on the same circumference; The circumference of at least two of the second magnetic members (211) and the circumference of at least two of the first magnetic members (1131) have the same central axis, and the distance from any one of the first magnetic members (1131) to the central axis is equal to the distance from any one of the second magnetic members (211) to the central axis; The range hood further comprises an adjustment component, the adjustment component being used to adjust the operating power of the fan (23), or to adjust the operating power of the fan (23) and the range hood body (1); The adjustment component comprises a first Hall sensor (1123), a second Hall sensor (1124) and at least two third magnetic members (212); the distance between the first Hall sensor (1123) and the central axis is equal to the distance between the second magnetic member (211) and the central axis, the distance between the second Hall sensor (1124) and the central axis is equal to the distance between the third magnetic member (212) and the central axis, and the distance between the first Hall sensor (1123) and the central axis is greater than the distance between the second Hall sensor (1124) and the central axis; The fan (23) has a first gear position and a second gear position; When the position of one of the second magnetic members (211) corresponds to the position of the first Hall sensor (1123), and the position of one of the third magnetic members (212) corresponds to the position of the second Hall sensor (1124), the fan (23) is in the first gear position; When the positions of one of the second magnetic members (211) and the first Hall sensor (1123) are opposite, and the positions of at least two of the third magnetic members (212) and the second Hall sensor (1124) are interlaced, the fan (23) is in the second gear position.

2. The range hood according to claim 1, characterized in that: The range hood body (1) comprises a main unit (11), a control circuit board (112) and a panel (114); the main unit (11) has an assembly surface (111); a mounting opening (1111) is provided on the assembly surface (111); the control circuit board (112) is located in the mounting opening (1111); the panel (114) covers the assembly surface (111) and is connected to the main unit (11); and the blowing assembly (2) is connected to the panel (114) via the magnetic attraction between a first magnetic part (1131) and a second magnetic part (211).

3. The range hood according to claim 2, characterized in that: The control circuit board (112) is installed in the first shell (113); the first shell (113) on which the control circuit board (112) is installed is connected to the panel (114) and embedded in the installation opening (1111); and the first magnetic member (1131) is installed on the first shell (113).

4. The range hood according to claim 3, characterized in that: An accommodating cavity is formed in the housing (22), the fan (23) is installed in the accommodating cavity, an air inlet (221) communicating with the accommodating cavity is provided on the side wall of the housing (22), the second magnetic member (211) is installed on the base (21), and the base (21) covers one end of the housing (22).

5. The range hood according to claim 4, characterized in that: Four second magnetic members (211) are provided on the base (21), and the four second magnetic members (211) are evenly distributed on the same circumference; Three first magnetic parts (1131) are provided on the first shell (113), and the connecting line between the three first magnetic parts (1131) is an isosceles right triangle.

6. The range hood according to claim 4, characterized in that: The central angle of two adjacent third magnetic parts (212) is twice the central angle of two adjacent second magnetic parts (211).

7. The range hood according to claim 6, characterized in that: The fan (23) and the range hood body (1) both have a first gear position and a second gear position; When the position of one of the second magnetic members (211) corresponds to the position of the first Hall sensor (1123), and the position of one of the third magnetic members (212) corresponds to the position of the second Hall sensor (1124), the fan (23) and the range hood body (1) are both in the first gear position; When one of the second magnetic members (211) is positioned opposite to the first Hall sensor (1123), and at least two of the third magnetic members (212) are positioned opposite to the second Hall sensor (1124), the fan (23) and the range hood body (1) are both in the second gear position.

8. The range hood according to claim 6, characterized in that: The number of the second Hall sensors (1124) is less than the number of the first magnetic members (1131), and the sum of the number of the second Hall sensors (1124) and the number of the first magnetic members (1131) is equal to the number of the second magnetic members (211).

9. The range hood according to claim 6, characterized in that: The third magnetic component (212) is provided on the base (21), and the third magnetic component (212) and the second magnetic component (211) are located in the same plane; Two third magnetic parts (212) are provided on the base (21), and the two third magnetic parts (212) are located on the same circumference and are symmetrical about the central axis.

10. The range hood according to claim 6, characterized in that: The first Hall sensor (1123) and the second Hall sensor (1124) are both provided on the control circuit board (112); The first shell (113) is provided with openings (1132) at positions corresponding to the first Hall sensor (1123) and the second Hall sensor (1124), and the openings (1132) pass through the first shell (113).

11. The range hood according to claim 4, characterized in that: The wireless power supply component comprises a receiving induction coil (251) and a transmitting induction coil (1121); the receiving induction coil (251) is provided on the blowing component (2), and the transmitting induction coil (1121) is provided on the range hood body (1).

12. The range hood according to claim 11, characterized in that: The blowing assembly (2) further includes a receiving induction control board (25), a receiving induction coil (251) being provided on the receiving induction control board (25) and electrically connected to the receiving induction control board (25), and the receiving induction control board (25) being used to transmit the current generated by the receiving induction coil (251) to the fan (23) and control the fan (23).

13. The range hood according to claim 12, characterized in that: The transmitting induction coil (1121) is provided on the control circuit board (112) and is electrically connected to the control circuit board (112).

14. The range hood according to claim 12, characterized in that: The housing (22) is a cylindrical structure with openings (1132) at both ends. A partition is provided in the housing (22), and the partition divides the accommodating cavity into a first cavity and a second cavity. The receiving sensing control board (25) is provided in the second cavity. The fan (23) is installed in the first cavity, and an air outlet (241) communicating with the first cavity is provided on a side wall of the housing (22).

15. The range hood according to claim 14, characterized in that: The blowing assembly (2) further comprises a cover plate (24), the cover plate (24) covering the opening (1132) end of the first cavity, and an air outlet (241) communicating with the first cavity is provided on the cover plate (24).

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