Air purification module and range hood with same

Abstract

The utility model relates to the technical field of range hoods, and discloses an air purification module and a range hood with the air purification module. The telescopic panel assembly is connected into the telescopic inner cavity in a sliding mode; the air curtain assembly is arranged in the mounting cavity of the telescopic panel assembly, and the air outlet side of the air curtain assembly faces the air curtain exhaust outlet; the negative ion generator is arranged on the air outlet side of the air curtain assembly; the driving module is arranged in the telescopic inner cavity, and the driving module is connected with the telescopic panel assembly and the negative ion generator; compared with the prior art, negative ions generated by the air purification module and the negative ion generator are diffused downwards under the action of air of the air curtain, the diffusion range covers the position corresponding to the mouth and the nose of a user, when oil smoke escapes outwards, the oil smoke is blocked by the air curtain firstly, and when part of the oil smoke penetrates through the air curtain, the oil smoke is purified by the negative ions in the air curtain; the user inhales the air purified by the negative ions, the health of the user is not affected, and the air is disturbed and diffused by the user and does not pollute the wall of a kitchen.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to an air purification module and a range hood having the same. Background Art

[0002] When users are cooking, a lot of oil smoke will be generated. When the range hood is started, the exhaust fan of the range hood forms a negative pressure at the air intake port. The oil smoke generated by cooking flows to the air intake port of the range hood under the action of negative pressure, and enters the air collecting box of the range hood through the air intake port of the range hood, and is then exhausted by the exhaust fan, which can provide users with a healthy cooking environment and avoid users from inhaling a lot of oil smoke when cooking. However, users will walk around during the cooking process. When users walk or stir-fry ingredients, the air flow will be disturbed, causing the oil smoke to escape. The escaped oil smoke will not only be inhaled by users, affecting their health, but also diffuse in the kitchen, making the air in the kitchen unable to remain fresh and clean. Over time, the oil stains will pollute the walls of the kitchen. Utility Model Content

[0003] The purpose of the utility model is to provide an air purification module and a range hood having the same, which are used to solve the above-mentioned technical problems.

[0004] An air purification module, used for a range hood, comprising:

[0005] A main body having a telescopic inner cavity;

[0006] A telescopic panel assembly is slidably connected in the telescopic inner cavity, and has a mounting cavity, a wind curtain exhaust port is provided at the bottom of the mounting cavity, and a wind curtain inlet port is provided at the top of the mounting cavity;

[0007] An air curtain assembly is arranged in the installation cavity of the telescopic panel assembly, with its air outlet side facing the air curtain outlet;

[0008] A negative ion generator is disposed in the installation cavity of the telescopic panel assembly and located on the air outlet side of the air curtain assembly;

[0009] A driving module is disposed in the telescopic inner cavity, and the driving module is connected to the telescopic panel assembly and the negative ion generator;

[0010] Among them, when the negative ion generator is located in the telescopic inner cavity, the driving module adopts a first driving mode of driving the telescopic panel assembly to extend or retract into the telescopic inner cavity alone; when the negative ion generator is located outside the telescopic inner cavity, the driving module adopts a second driving mode of driving the telescopic panel assembly to extend or retract into the telescopic inner cavity and simultaneously driving the emitting end of the negative ion generator to extend or retract into the installation cavity through the wind curtain exhaust port.

[0011] According to one embodiment of the utility model, when the telescopic panel assembly is extended from the telescopic inner cavity, the driving module first adopts the first driving mode to drive the telescopic panel assembly to extend out of the telescopic inner cavity for a certain distance, and then adopts the second driving mode to make the rest of the telescopic panel assembly extend out of the telescopic inner cavity, and at the same time make the emitting end of the negative ion generator extend downward to the lower surface of the telescopic panel assembly; when the driving module switches from the first driving mode to the second driving mode, the distance a between the center of the emitting end of the negative ion generator and the front end of the telescopic inner cavity satisfies: a≥D / 2, where D is the head diameter of the emitting end of the negative ion generator.

[0012] According to one embodiment of the present utility model, when the telescopic panel assembly retracts from the extended state into the telescopic inner cavity, the driving module first adopts the second driving mode to partially retract the telescopic panel assembly into the telescopic inner cavity, and at the same time retracts the negative ion generator upward back into the installation cavity of the telescopic panel assembly, and then adopts the first driving mode to drive the remaining part of the telescopic panel assembly to retract into the telescopic inner cavity.

[0013] According to one embodiment of the utility model, the driving module includes a first driving component and a second driving component. The first driving component is connected to the telescopic panel component and is used to drive the telescopic panel component to extend or retract into the telescopic inner cavity. The second driving component is connected to the negative ion generator and is used to drive the negative ion generator to extend or retract into the installation cavity when the part corresponding to the installation cavity and the emitting end of the negative ion generator is located outside the telescopic inner cavity.

[0014] According to one embodiment of the utility model, the second driving component includes a sliding seat, upper and lower sliders, front and rear sliders, upper and lower compression springs and front and rear compression springs. The upper and lower sliders are connected to the sliding seat for up and down sliding movement, the upper and lower compression springs are pressed between the two, the front and rear sliders are connected to the sliding seat for front and rear sliding movement, one end of the upper and lower compression springs is connected to the front and rear sliders, and the other end is fixedly connected to the telescopic inner cavity, the upper and lower sliders are provided with a first inclined surface, the first inclined surface is inclined upward from front to back, the front and rear sliders are provided with a second inclined surface, the inclination of the second inclined surface is adapted to the inclination of the first inclined surface and is slidably connected to the first inclined surface.

[0015] According to one embodiment of the utility model, when the telescopic panel assembly is hidden in the telescopic inner cavity, the force of the front and rear compression springs on the front and rear sliders is F10, the elastic coefficient of the front and rear compression springs is K1, and the compression length is X0, then F10=K1*X0, the force of the upper and lower compression springs on the upper and lower sliders is F20, the elastic coefficient of the upper and lower compression springs is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined plane and the horizontal plane is θ, then: F10*cosθ>F20*sinθ.

[0016] According to one embodiment of the utility model, when the length of the telescopic panel assembly from the hidden state to the extended telescopic inner cavity is L1, the distance a between the center of the emitting end of the negative ion generator and the front end of the telescopic inner cavity satisfies: a≥D / 2, wherein D is the head diameter of the emitting end of the negative ion generator; at this time, the force of the front and rear compression springs on the front and rear sliders is F11, the elastic coefficient of the front and rear compression springs is K1, and the compression length is X1=X0-L1, then F11=K1*X1, the force of the upper and lower compression springs on the upper and lower sliders is F20, the elastic coefficient of the upper and lower compression springs is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined plane and the horizontal plane is θ, then: F11*cosθ=F20*sinθ.

[0017] According to one embodiment of the present utility model, when the telescopic panel assembly is fully extended out of the telescopic inner cavity, the length of the telescopic panel assembly extending out of the telescopic inner cavity is L2, the distance that the emitting end of the negative ion generator extends to the bottom of the telescopic panel assembly is h, the head diameter of the emitting end of the negative ion generator is D, h>D, 2㎜≤D≤5㎜, the compression length Y2 of the upper and lower sliders satisfies Y2≥h, at this time, the force of the front and rear compression springs on the front and rear sliders is F12, the elastic coefficient of the front and rear compression springs is K1, the compression length is X2= / X0-L2 / , then F12=K1*X2, the force of the upper and lower compression springs on the upper and lower sliders is F22, the elastic coefficient of the upper and lower compression springs is K2, the compression length is Y2, then F22=K2*Y2, the angle between the first inclined plane and the horizontal plane is θ, then: F12*cosθ<F22*sinθ.

[0018] According to one embodiment of the utility model, the wind curtain assembly includes an air duct, the air inlet side of the air duct corresponds to the air inlet of the wind curtain, the exhaust side of the air duct corresponds to the exhaust outlet of the wind curtain, and the negative ion generator is arranged in the air duct, and its emitting end passes through the exhaust side of the air duct and can rise or fall through the exhaust outlet of the wind curtain.

[0019] A range hood adopts the above-mentioned air purification module and also includes a PM2.5 detection module. The PM2.5 detection module is arranged in the installation cavity of the telescopic panel assembly. The top plate of the installation cavity of the telescopic panel assembly is provided with a detection air inlet hole corresponding to the PM2.5 detection module. When the telescopic panel assembly is fully extended out of the telescopic inner cavity, the detection air inlet hole extends out of the telescopic inner cavity along with the telescopic panel assembly.

[0020] Compared with the prior art, the air purification module of the utility model has the following advantages:

[0021] In the air purification module of the utility model, the negative ions generated by the negative ion generator diffuse downward under the action of the wind of the wind curtain, and the diffusion range covers the positions corresponding to the user's mouth and nose. When the oil smoke escapes outward, it is first blocked by the wind curtain, and when part of it passes through the wind curtain, it is purified by the negative ions in the wind curtain. The user inhales air purified by negative ions, which will not affect the user's health. This part of the air is disturbed and diffused by the user and will not pollute the walls of the kitchen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a range hood having the air purification module of the utility model;

[0023] Figure 2 for Figure 1 Sectional view in the AA direction;

[0024] Figure 3 for Figure 1 Cross-sectional view in the BB direction;

[0025] Figure 4 for Figure 1 Cross-sectional view in the CC direction (the telescopic panel assembly is hidden in the telescopic inner cavity);

[0026] Figure 5 for Figure 4 A magnified view of middle;

[0027] Figure 6 for Figure 1 Cross-sectional view in the CC direction (the telescopic panel assembly extends out of the telescopic inner cavity to such a length that the corresponding part of the emission end of the negative ion generator extends out of the telescopic inner cavity)

[0028] Figure 7 for Figure 6 Enlarged view of middle B;

[0029] Figure 8 for Figure 1 Cross-sectional view in the CC direction (the telescopic panel assembly is fully extended out of the telescopic inner cavity, and the emission end of the negative ion generator extends out of the installation cavity);

[0030] Fig. 9 for Figure 8 Enlarged view of middle C;

[0031] Fig.10 An exploded view of the second driving assembly of the air purification module of the utility model;

[0032] Fig.11 It is a structural schematic diagram of the telescopic panel assembly of the air purification module of the utility model;

[0033] Fig.12 This is a schematic diagram of the main body after the air collecting box and maintenance cover are removed;

[0034] Fig.13 for Fig.12 Enlarged view of middle D;

[0035] In the figure: a. telescopic inner cavity, 1. main body, 2. telescopic panel assembly, 21. air curtain exhaust port, 22. air curtain air inlet, 23. detection air inlet hole, 3. air curtain assembly, 31. air duct, 4. negative ion generator, 5. first drive assembly, 51. electric push rod, 52. rotating shaft, 53. first connecting rod, 54. second connecting rod, 55. third connecting rod, 6. second drive assembly, 61. slide seat, 62. upper and lower sliders, 621. first inclined plane, 63. front and rear sliders, 631. second inclined plane, 64. upper and lower compression springs, 65. front and rear compression springs, 7. PM2.5 detection module, 8. slide rail assembly.

[0036] The realization of the functions and advantages of the utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0041] See also Figures 1 to 11 The utility model discloses an air purification module. The air purification module disclosed in the utility model is used for a range hood, comprising a main body 1, a telescopic panel assembly 2, an air curtain assembly 3, a negative ion generator 4 and a driving module. The main body 1 has a telescopic inner cavity a; the telescopic panel assembly 2 is slidably connected in the telescopic inner cavity a; the telescopic panel assembly 2 has an installation cavity, a wind curtain exhaust port 21 is provided at the bottom of the installation cavity, and a wind curtain air inlet 22 is provided at the top of the installation cavity; the wind curtain assembly 3 is arranged in the installation cavity of the telescopic panel assembly 2, and its air outlet side faces the wind curtain exhaust port 21; the negative ion generator 4 is arranged at the telescopic panel assembly The drive module is arranged in the telescopic inner cavity a, and is connected to the telescopic panel assembly 2 and the negative ion generator 4; wherein, when the negative ion generator 4 is located in the telescopic inner cavity a, the drive module adopts a first drive mode that drives the telescopic panel assembly 2 to extend or retract into the telescopic inner cavity a alone, and when the negative ion generator 4 is located outside the telescopic inner cavity a, the drive module adopts a second drive mode that drives the telescopic panel assembly 2 to extend or retract into the telescopic inner cavity a and simultaneously drives the emitting end of the negative ion generator 4 to extend or retract into the installation cavity through the air curtain exhaust port 21. The air purification module of the utility model is applied to a range hood, and when a user performs cooking operations, the user starts the range hood, such as Figure 4 and Figure 5 As shown, at this time, since the telescopic panel assembly 2 is hidden in the telescopic inner cavity a, the negative ion generator 4 is located in the telescopic inner cavity a with the telescopic panel assembly 2. When the driving module adopts the first driving mode to drive the telescopic panel assembly 2 to extend out of the telescopic inner cavity a, the air curtain assembly 3 and the negative ion generator 4 extend out of the telescopic inner cavity a with the telescopic panel assembly 2. At this time, the height of the emitting end of the negative ion generator 4 is higher than the height of the lower surface of the telescopic panel assembly 2. When the negative ion generator 4 extends out of the telescopic inner cavity a with the telescopic panel assembly 2, the negative ion generator 4 will not interfere with the opening of the telescopic inner cavity a, and will not affect the extension of the telescopic panel assembly 2 from the telescopic inner cavity a; as shown Figure 6 and Figure 7 As shown, after the negative ion generator 4 is moved out from the telescopic inner cavity a, the driving module adopts the second driving mode to work, continuing to drive the telescopic panel assembly 2 to extend from the telescopic inner cavity while driving the emission end of the negative ion generator 4 to move downward and extend below the lower surface of the telescopic panel assembly 2; Figure 8 and Fig. 9As shown, after the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity a, the emitting end of the negative ion generator 4 is extended into place and no longer continues to move downward relative to the lower surface of the telescopic panel 2, and the exhaust fan of the range hood starts to suck the fumes generated by the user's cooking, and the wind curtain assembly 3 and the negative ion generator 4 are started at the same time. The wind curtain assembly 3 draws air through the wind curtain air inlet 22, and then exhausts air downward through the wind curtain air outlet 21 to form a wind curtain. The negative ions generated by the negative ion generator 4 diffuse downward under the action of the wind curtain wind, and the diffusion range covers the position corresponding to the user's mouth and nose. When the fumes escape outward, they are first blocked by the wind curtain. When part of them passes through the wind curtain, they are purified by the negative ions in the wind curtain. The user inhales air purified by negative ions, which will not affect the user's health. This part of the air is disturbed and diffused by the user, and will not pollute the walls of the kitchen.

[0042] In the air purification module of the utility model, when the telescopic panel assembly 2 extends out of the telescopic inner cavity a, the driving module first adopts the first driving mode to drive the telescopic panel assembly 2 to extend out of the telescopic inner cavity a for a certain distance, and then adopts the second driving mode to make the rest of the telescopic panel assembly 2 extend out of the telescopic inner cavity a, and at the same time makes the emission end of the negative ion generator 4 extend downward to the lower surface of the telescopic panel assembly 2; when the driving module switches from the first driving mode to the second driving mode, the distance a between the center of the emission end of the negative ion generator 4 and the front end of the telescopic inner cavity a satisfies: a≥D / 2, where D is the head diameter of the emission end of the negative ion generator 4. When the telescopic panel assembly 2 is hidden in the telescopic inner cavity a, the negative ion generator 4 is also located in the telescopic inner cavity a. At this time, the driving module is started, and the driving module will adopt the first driving mode to drive the telescopic panel assembly 2 to move outward from the telescopic inner cavity a. Figure 6 and Figure 7As shown, when the emitting end of the negative ion generator 4 is completely moved outside the telescopic inner cavity a, at this time, the distance a between the center of the emitting end of the negative ion generator 4 and the front end of the telescopic inner cavity a satisfies: a≥D / 2, and then the driving module adopts the second driving mode to work, and continues to drive the telescopic panel assembly 2 to extend from the telescopic inner cavity while driving the emitting end of the negative ion generator 4 to move downward and extend below the lower surface of the telescopic panel assembly 2; after the telescopic panel assembly 2 is completely extended out of the telescopic inner cavity a, the emitting end of the negative ion generator 4 no longer continues to move downward relative to the lower surface of the telescopic panel assembly 2, and the exhaust air of the range hood The machine starts to suck the oil smoke generated by the user's cooking, the air curtain assembly 3 and the negative ion generator 4 are started at the same time, the air curtain assembly 3 draws air through the air curtain inlet 22, and then exhausts air downward through the air curtain exhaust port 21 to form an air curtain, and the negative ions generated by the negative ion generator 4 diffuse downward under the action of the air curtain wind, and the diffusion range covers the position corresponding to the user's mouth and nose. When the oil smoke escapes outward, it is first blocked by the air curtain, and when part of it passes through the air curtain, it is purified by the negative ions in the air curtain. The user inhales air purified by negative ions, which will not affect the user's health. This part of the air is disturbed and diffused by the user, and will not pollute the walls of the kitchen.

[0043] In the air purification module of the utility model, when the telescopic panel assembly 2 retracts from the extended state into the telescopic inner cavity a, the driving module first adopts the second driving mode to partially retract the telescopic panel assembly 2 into the telescopic inner cavity a, and at the same time retracts the negative ion generator 4 upward back into the installation cavity of the telescopic panel assembly 2, and then adopts the first driving mode to drive the remaining part of the telescopic panel assembly 2 to retract into the telescopic inner cavity a. When the telescopic panel assembly 2 is in a fully extended state, the negative ion generator 4 is located outside the telescopic inner cavity a. When the cigarette is turned off, the driving module first uses the second driving mode to work, so that the telescopic panel assembly 2 is retracted into the telescopic inner cavity a, and the negative ion generator 4 is retracted into the installation cavity of the telescopic panel assembly 2. Before the distance a between the center of the emitting end of the negative ion generator 4 and the front end of the telescopic inner cavity a satisfies: a=D / 2, the negative ion generator 4 is completely retracted into the installation cavity of the telescopic panel assembly 2, and the height of its emitting end is higher than the height of the lower surface of the telescopic panel assembly 2. Then the driving module uses the second driving mode to work, so that the telescopic panel assembly 2 continues to move into the telescopic inner cavity a until the telescopic panel assembly 2 moves into place in the telescopic inner cavity a. That is to say, in the process of the telescopic panel assembly 2 extending from the telescopic inner cavity a to retracting the telescopic inner cavity a, as long as the height of the emitting end of the negative ion generator 4 is higher than the height of the lower surface of the telescopic panel assembly 2, the driving module starts to work in the first driving mode.

[0044] The air purification module of the utility model, the driving module includes a first driving component 5 and a second driving component 6, the first driving component 5 is connected to the telescopic panel component 2, and is used to drive the telescopic panel component 2 to extend or retract the telescopic inner cavity a, and the second driving component 6 is connected to the negative ion generator 4, and is used to drive the negative ion generator 4 to extend or retract the installation cavity when the portion corresponding to the emission end of the installation cavity and the negative ion generator 4 is located outside the telescopic inner cavity a. When the telescopic panel component 2 is located in the telescopic inner cavity a, the smoke machine is started at this time, the driving module is started, the first driving component 5 drives the telescopic panel component 2 to start extending from the telescopic inner cavity a, and the negative ion generator 4 only moves horizontally with the telescopic panel component 2. When the negative ion generator 4 leaves the telescopic inner cavity, the second driving component 6 starts to move the negative ion generator 4 downward relative to the installation cavity, and the emission end of the negative ion generator 4 begins to extend to the lower surface of the telescopic panel component 2. When the telescopic panel component 2 is extended in place, the emission end of the negative ion generator 4 drops in place. When the range hood is turned off, the drive module starts, and the first drive component 5 drives the telescopic panel component 2 to start moving into the telescopic inner cavity a. At the same time, the second drive component 6 starts to retract the emitting end of the negative ion generator 4 into the installation cavity. When the emitting end of the negative ion generator 4 retracts to above the lower surface of the telescopic panel component 2, the negative ion generator 4 retracts into place into the installation cavity, and the first drive component 5 continues to drive the telescopic panel component 2 to move into the telescopic inner cavity a until the telescopic panel component 2 retracts into place in the telescopic inner cavity a.

[0045] In the air purification module of the utility model, the first driving component 5 can adopt an electric push rod, which directly pushes the telescopic panel component 2 to move back and forth in the telescopic inner cavity a.

[0046] See also Figure 2 , Fig.12 and Fig.13In this embodiment, the first driving assembly 5 includes an electric push rod 51, a rotating shaft 52, a first connecting rod 53, a second connecting rod 54 and a third connecting rod 55. The driving end of the electric push rod 51 is connected to one end of the first connecting rod 53, and the other end of the first connecting rod 53 is connected to the rotating shaft 52. The rotating shaft 52 is rotatably connected to the telescopic inner cavity a through an axle seat. The electric push rod 51 drives the rotating shaft 52 to rotate through the first connecting rod 53. Both ends of the rotating shaft 52 are connected to the second connecting rod 54. One end of the third connecting rod 55 is rotatably connected to the second connecting rod 54. A slide rail assembly 8 is provided in the telescopic inner cavity a. The fixed rail of the slide rail assembly 8 is fixed to the telescopic inner cavity a. Side wall, the movable rail is slidably connected to the fixed rail, the movable rail is connected to the telescopic panel assembly 2, the other end of the third connecting rod 55 is connected to the movable rail of the slide rail assembly 8 or to the telescopic panel assembly, when the electric push rod 51 is started, the electric push rod 51 pushes the first connecting rod 53 to swing, the first connecting rod 53 drives the rotating shaft 52 to rotate, the rotating shaft 52 drives the second connecting rod 54 to rotate, and the second connecting rod 54 drives the third connecting rod 55 to rotate. Due to the limitation of the fixed rail, the third connecting rod 55 pushes the movable rail to slide along the fixed rail, or pushes the movable rail to slide along the fixed rail through the telescopic panel assembly 2, thereby making the telescopic panel assembly 2 slide in the telescopic inner cavity a.

[0047] See also Figure 5 , Figure 7 , Fig. 9 and Fig.10In the air purification module of the utility model, the second driving assembly 6 includes a slide 61, an upper and lower slider 62, a front and rear slider 63, an upper and lower compression spring 64 and a front and rear compression spring 65. The upper and lower sliders 62 are connected to the slide 61 by sliding up and down, and the upper and lower compression springs 64 are pressed between the two. The front and rear sliders 63 are connected to the slide 61 by sliding forward and backward. One end of the upper and lower compression springs 64 is connected to the front and rear sliders 63, and the other end is fixedly connected to the telescopic inner cavity a. The upper and lower sliders 62 are provided with a first inclined surface 621, and the first inclined surface 621 is inclined upward from front to back. The front and rear sliders 63 are provided with a second inclined surface 631, and the inclination of the second inclined surface 631 is adapted to the inclination of the first inclined surface 621 and is slidably connected to the first inclined surface 621. When the negative ion generator 4 is located in the telescopic inner cavity a, the front and rear compression springs 65 are in a compressed state, and the front and rear compression springs 65 apply a forward thrust to the front and rear sliders 63. Since the second inclined surface 631 of the front and rear sliders 63 is tilted downward from front to back and abuts against the first inclined surface 621, the front and rear sliders 63 apply an upward force to the upper and lower sliders 62, so that the upper and lower compression springs 64 are in a compressed state. At this time, the emission end of the negative ion generator 4 is hidden in the installation cavity of the telescopic panel assembly 2; when the telescopic panel assembly 2 moves outward from the telescopic inner cavity a, since the other ends of the front and rear compression springs 65 are fixed in the telescopic inner cavity a, the compression length of the front and rear compression springs 65 becomes smaller, the force of the front and rear compression springs 65 on the front and rear sliders 63 becomes smaller, and the force of the front and rear sliders 63 on the upper and lower sliders 62 becomes smaller, but at this time, the elastic force of the upper and lower compression springs 64 is not enough to overcome the friction force of the front and rear sliders 63 on the upper and lower sliders 62 along the first inclined surface 621. The compressed length of 64 remains unchanged, and the emitting end of the negative ion generator 4 is still hidden in the installation cavity of the telescopic panel assembly 2, so that the negative ion generator 4 can be smoothly moved out of the telescopic inner cavity a with the telescopic panel assembly 2. The longer the length of the telescopic panel assembly 2 moving out of the telescopic inner cavity a is, the smaller the compressed length of the front and rear compression springs 65 is, and the smaller the force on the front and rear sliders 63 is. When the negative ion generator 4 moves out of the telescopic inner cavity with the telescopic panel assembly 2, and the elastic force of the upper and lower compression springs 64 is sufficient to overcome the friction force of the front and rear sliders 63 on the upper and lower sliders 62 along the first inclined surface 621, the upper and lower compression springs 64 begin to drive the upper and lower sliders 62 to descend, and the force of the upper and lower sliders 62 acting on the second inclined surface 631 through the first inclined surface 621 is decomposed into a horizontal component force to make the front and rear sliders 63 move backward along the slide seat 61, and the upper and lower sliders 62 descend and drive the negative ion generator 4 to extend from the installation cavity of the telescopic panel assembly 2 to the lower surface of the telescopic panel assembly 2.Similarly, when the telescopic panel assembly 2 needs to be retracted into the telescopic inner cavity a, the telescopic panel assembly 2 moves into the telescopic inner cavity a with the negative ion generator 4, and the front and rear sliders 63 move backward relative to the telescopic inner cavity a, and the front and rear sliders 63 begin to squeeze the front and rear compression springs 65 backward, and the compression of the front and rear compression springs 65 applies a force in the opposite direction to the front and rear sliders 63. When the horizontal force of the front and rear compression springs 65 on the front and rear sliders 63 overcomes the horizontal force of the upper and lower compression springs 64 acting on the front and rear sliders 63 through the upper and lower sliders 62, the front and rear sliders 63 begin to move forward along the slide seat 61 relative to the upper and lower sliders 62, and the second inclined surface 631 of the front and rear sliders 63 acts on the first inclined surface 621 of the upper and lower sliders 62, squeezing the first inclined surface 621 and causing the upper and lower sliders 62 to move upward and compress the upper and lower compression springs 64, and the upper and lower sliders 62 move upward and drive the negative ion generator 4 to retract into the installation cavity of the telescopic panel assembly 2; thereafter, the first driving assembly 5 continues to drive the telescopic panel assembly 2 to move into the telescopic inner cavity a until the telescopic panel assembly 2 moves into place.

[0048] See also Figure 4 and Figure 5In the air purification module of the utility model, when the telescopic panel assembly 2 is hidden in the telescopic inner cavity a, the force of the front and rear compression springs 65 on the front and rear sliders 63 is F10, the elastic coefficient of the front and rear compression springs 65 is K1, and the compression length is X0, then F10=K1*X0, the force of the upper and lower compression springs 64 on the upper and lower sliders 62 is F20, the elastic coefficient of the upper and lower compression springs 64 is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined surface 621 and the horizontal plane is θ, then: F10*cosθ>F20*sinθ. The force F10 exerted by the front and rear compression springs 65 on the front and rear sliders 63 is in the horizontal direction forward, and after acting on the first inclined surface 621 through the second inclined surface 631, it can be decomposed into a first component force F110 inclined downward along the first inclined surface 621 and a second component force F120 perpendicular to the first inclined surface 621 and upward, and the relationship between the first component force F110 and the force F10 exerted by the front and rear compression springs 65 on the front and rear sliders 63 is: F110 = F10 * cosθ, and the force F20 exerted by the upper and lower compression springs 64 on the first inclined surface 621 is vertically downward, and after acting on the second inclined surface 631 through the first inclined surface 621, it can be decomposed into a first component force F210 downward along the first inclined surface 621 and a second component force F220 perpendicular to the first inclined surface 621 and downward The second component force F220, and the relationship between the first component force F210 and the force F20 of the upper and lower compression springs 64 on the upper and lower sliders 62 is: F210 = F20*sinθ; therefore, when the telescopic panel assembly 2 is hidden in the telescopic inner cavity a, F10*cosθ>F20*sinθ, indicating that the force of the front and rear sliders 63 acting on the first inclined surface 621 through the second inclined surface 631 along the first inclined surface 621 is greater than the force of the upper and lower compression springs 64 acting on the first inclined surface 621 along the first inclined surface 621 downward, the upper and lower sliders 62 can no longer slide downward relative to the second inclined surface 631 under the action of the upper and lower compression springs 64, and the emitting end of the negative ion generator 4 remains hidden in the installation cavity of the telescopic panel assembly 2.

[0049] See also Figure 6 and Figure 7In the air purification module of the utility model, the length of the telescopic panel assembly 2 from the hidden state to the extended telescopic inner cavity a is L1, and the distance a between the center of the emission end of the negative ion generator 4 and the front end of the telescopic inner cavity a satisfies: a≥D / 2, where D is the head diameter of the emission end of the negative ion generator 4; at this time, the force of the front and rear compression springs 65 on the front and rear sliders 63 is F11, the elastic coefficient of the front and rear compression springs 65 is K1, and the compression length is X1=X0-L1, then F11=K1*X1, the force of the upper and lower compression springs 64 on the upper and lower sliders 62 is F20, the elastic coefficient of the upper and lower compression springs 64 is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined surface 621 and the horizontal plane is θ, then: F11*cosθ=F20*sinθ. When the telescopic panel assembly 2 extends from the telescopic inner cavity a, the negative ion generator 4 moves outward from the telescopic inner cavity a along with the telescopic panel assembly 2. When the negative ion generator 4 moves out of the telescopic inner cavity, the rear side of its emitting end must have completed moving out of the telescopic inner cavity a. The distance a between the center of the emitting end of the negative ion generator 4 and the front end of the telescopic inner cavity a satisfies: a≥D / 2, that is, the rear side of the emitting end of the negative ion generator 4 is in contact with the front end of the telescopic inner cavity a or has a certain distance between the front end of the telescopic inner cavity a. At this time, the negative ion generator 4 moving out of the installation cavity of the telescopic panel assembly 2 will not affect the telescopic panel assembly 2 moving out through the exit of the telescopic inner cavity a. When the telescopic panel assembly 2 begins to extend from the telescopic inner cavity a, the compressed length of the front and rear compression springs 65 begins to decrease. The longer the telescopic panel assembly 2 moves out of the telescopic inner cavity a, the smaller the compressed length of the front and rear compression springs 65, and the smaller the force on the front and rear sliders 63. After the negative ion generator 4 moves out of the telescopic inner cavity with the telescopic panel assembly 2, there must be a moment when the elastic force of the upper and lower compression springs 64 is sufficient to overcome the force of the front and rear sliders 63 on the upper and lower sliders 62 and decompose the upward friction along the first inclined surface 621, that is: F11*cosθ=F20*sinθ. After this moment, when the telescopic panel assembly 2 continues to move out of the telescopic inner cavity a, the upper and lower compression springs 64 begin to drive the upper and lower sliders 62 to descend, and the negative ion generator 4 begins to extend from the installation cavity of the telescopic panel assembly 2.

[0050] See also Figure 8 and Fig. 9In the air purification module of the utility model, when the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity a, the length of the telescopic panel assembly 2 extending out of the telescopic inner cavity a is L2, the distance that the emitting end of the negative ion generator 4 extends to the bottom of the telescopic panel assembly 2 is h, the head diameter of the emitting end of the negative ion generator 4 is D, h>D, 2㎜≤D≤5㎜, the compression length Y2 of the upper and lower sliders 62 satisfies Y2≥h, at this time, the force of the front and rear compression springs 65 on the front and rear sliders 63 is F12, the elastic coefficient of the front and rear compression springs 65 is K1, the compression length is X2= / X0-L2 / , then F12=K1*X2, the force of the upper and lower compression springs 64 on the upper and lower sliders 62 is F22, the elastic coefficient of the upper and lower compression springs 64 is K2, the compression length is Y2, then F22=K2*Y2, the angle between the first inclined surface 621 and the horizontal plane is θ, then: F12*cosθ<F22*sinθ. After the negative ion generator 4 moves out of the telescopic inner cavity along with the telescopic panel assembly 2, there must be a moment when the elastic force of the upper and lower compression springs 64 is sufficient to overcome the friction force of the front and rear sliders 63 on the upper and lower sliders 62 along the first inclined surface 621, that is: F11*cosθ=F20*sinθ. At this moment, when the telescopic panel assembly 2 continues to move out of the telescopic inner cavity a, the upper and lower compression springs 64 begin to drive the upper and lower sliders 62 to descend, and the negative ion generator 4 begins to extend from the installation cavity of the telescopic panel assembly 2. In this process, F12*cosθ<F22*sinθ. After the negative ion generator 4 is dropped into place, the drop height h satisfies h>D, that is, the emission end of the negative ion generator 4 can be completely exposed from the installation cavity of the telescopic panel assembly 2, so that the negative ions generated by the negative ion generator 4 can be diffused with the wind curtain wind blown out by the wind curtain assembly 3, avoiding the negative ions entering the telescopic panel assembly 2 before installation from contacting with the inner cavity of the telescopic panel assembly 2 and being annihilated, thereby improving the utilization rate of the negative ions. The compression length Y2 of the upper and lower sliders 62 satisfies Y2≥h, that is, if the negative ion generator 4 is hidden in the installation cavity of the telescopic panel assembly 2, if the emitting end of the negative ion generator 4 is higher than the lower surface of the telescopic panel assembly 2, when the negative ion generator 4 extends out of the installation cavity of the telescopic panel assembly 2, the compression length Y2 of the upper and lower sliders 62 satisfies Y2>h, and the negative ion generator 4 can be dropped from the installation cavity of the telescopic panel assembly 2 to a height of h; when the negative ion generator 4 is hidden in the installation cavity of the telescopic panel assembly 2, if the emitting end of the negative ion generator 4 is flush with the lower surface of the telescopic panel assembly 2, when the negative ion generator 4 extends out of the installation cavity of the telescopic panel assembly 2, the compression length Y2 of the upper and lower sliders 62 satisfies Y2=h, and the negative ion generator 4 can be dropped from the installation cavity of the telescopic panel assembly 2 to a height of h.

[0051] See also Figure 5 , Figure 7 and Fig. 9In the air purification module of the utility model, the air curtain assembly 3 includes an air duct 31, the air inlet side of the air duct 31 corresponds to the air curtain air inlet 22, the air outlet side of the air duct 31 corresponds to the air curtain air outlet 21, and the negative ion generator 4 is arranged in the air duct, and its emission end passes through the air outlet side of the air duct 31 and can rise or fall through the air curtain air outlet 21. When the range hood is started and the telescopic panel assembly 2 extends out of the telescopic inner cavity a, the fan of the air curtain assembly 3 sucks the wind from the top of the telescopic panel assembly 2 into the air duct 31 through the air curtain air inlet 22, and then the wind in the air duct 31 is discharged downward through the air curtain air outlet 21 to form a wind curtain. When the wind of the wind curtain blows downward, the negative ions generated by the negative ion generator 4 can be blown to a farther distance, so that the negative ions can purify the oil smoke in the wind curtain.

[0052] See also Figures 1 to 3 and Fig.11 The utility model also provides a range hood, which adopts the above-mentioned air purification module. The range hood also includes a PM2.5 detection module 7. The PM2.5 detection module 7 is arranged in the installation cavity of the telescopic panel assembly 2. A detection air inlet hole 23 corresponding to the PM2.5 detection module 7 is provided on the top plate of the installation cavity of the telescopic panel assembly 2. When the telescopic panel assembly 2 is fully extended out of the telescopic inner cavity a, the detection air inlet hole 23 extends out of the telescopic inner cavity a along with the telescopic panel assembly 2. When the range hood is working, the telescopic panel assembly 2 extends out of the telescopic inner cavity a, the emitting end of the negative ion generator 4 extends out from the installation front of the telescopic panel assembly 2, the wind curtain air inlet 22 and the detection air inlet hole 23 are located on the upper surface of the telescopic panel assembly 2 and are connected to the airflow on the upper surface of the telescopic panel assembly 2; the fan of the wind curtain assembly 3 is started, and the wind is sucked into the air duct 31 from the top of the telescopic panel assembly 2, and then the wind in the air duct 31 is discharged downward through the wind curtain exhaust port 21 to form a wind curtain, the negative ion generator 4 is started and generates negative ions, and when the wind curtain wind blows downward, the negative ions generated by the negative ion generator 4 can be blown a longer distance, so that the negative ions can purify the oil fume in the wind curtain; during the operation of the range hood, the PM2.5 detection module 7 detects the air above the telescopic panel assembly 2 and detects the escape of oil fume in real time.

[0053] When the air purification module is installed on the range hood, it can be used in a variety of ways. For example, when the range hood is working normally and the PM2.5 detection module 7 detects that the PM2.5 content in the air of the cooking space is normal, the negative ion generator 4 can be turned off; when the PM2.5 detection module 7 detects that the PM2.5 content in the air of the cooking space exceeds the standard, the negative ion generator 4 is turned on. For example, after the range hood is turned off, the PM2.5 detection module 7 continues to detect the air quality in the environment. When the PM2.5 content in the air exceeds the standard, the telescopic panel assembly 2 extends out of the telescopic inner cavity a again, the air curtain assembly 3 and the negative ion generator 4 are started, and the air curtain assembly 3 sends out an airflow containing negative ions downward. At this time, the exhaust fan of the range hood is not running, and the airflow flows in the environment and purifies the air in the environment. The PM2.5 detection module 7 continues to detect the air quality in the environment. When the PM2.5 content in the air reaches the standard, the air curtain assembly 3 and the negative ion generator 4 are turned off, and the telescopic panel assembly 2 retracts into the telescopic inner cavity.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air purification module for a range hood, characterized in that: include: A main body (1) having a telescopic inner cavity (a); A telescopic panel assembly (2) is slidably connected to the telescopic inner cavity (a), and has a mounting cavity, a wind curtain exhaust port (21) is provided at the bottom of the mounting cavity, and a wind curtain inlet port (22) is provided at the top of the mounting cavity; An air curtain assembly (3) is arranged in the installation cavity of the telescopic panel assembly (2), with its air outlet side facing the air curtain outlet (21); A negative ion generator (4), which is arranged in the installation cavity of the telescopic panel assembly (2) and is located on the air outlet side of the air curtain assembly (3); A driving module, which is arranged in the telescopic inner cavity (a), and the driving module is connected to the telescopic panel assembly (2) and the negative ion generator (4); Wherein, when the negative ion generator (4) is located in the telescopic inner cavity (a), the driving module adopts a first driving mode of driving the telescopic panel assembly (2) to extend or retract into the telescopic inner cavity (a) alone; when the negative ion generator (4) is located outside the telescopic inner cavity (a), the driving module adopts a second driving mode of driving the telescopic panel assembly (2) to extend or retract into the telescopic inner cavity (a) and simultaneously driving the emitting end of the negative ion generator (4) to extend or retract into the installation cavity through the air curtain exhaust port (21).

2. The air purification module according to claim 1, characterized in that: When the telescopic panel assembly (2) extends out of the telescopic inner cavity (a), the driving module first uses a first driving mode to drive the telescopic panel assembly (2) to extend out of the telescopic inner cavity (a) for a certain distance, and then uses a second driving mode to make the remaining part of the telescopic panel assembly (2) extend out of the telescopic inner cavity (a), and at the same time makes the emission end of the negative ion generator (4) extend downward to the lower surface of the telescopic panel assembly (2); when the driving module switches from the first driving mode to the second driving mode, the distance a between the center of the emission end of the negative ion generator (4) and the front end of the telescopic inner cavity (a) satisfies: a≥D / 2, where D is the head diameter of the emission end of the negative ion generator (4).

3. The air purification module according to claim 1, characterized in that: When the telescopic panel assembly (2) is retracted from the extended state into the telescopic inner cavity (a), the driving module first uses the second driving mode to partially retract the telescopic panel assembly (2) into the telescopic inner cavity (a), and simultaneously causes the negative ion generator (4) to retract upwards into the installation cavity of the telescopic panel assembly (2), and then uses the first driving mode to drive the remaining part of the telescopic panel assembly (2) to retract into the telescopic inner cavity (a).

4. The air purification module according to claim 1, characterized in that: The driving module comprises a first driving component (5) and a second driving component (6); the first driving component (5) is connected to the telescopic panel component (2) and is used to drive the telescopic panel component (2) to extend or retract into the telescopic inner cavity (a); the second driving component (6) is connected to the negative ion generator (4) and is used to drive the negative ion generator (4) to extend or retract into the installation cavity when a portion of the installation cavity corresponding to an emission end of the negative ion generator (4) is located outside the telescopic inner cavity (a).

5. The air purification module according to claim 4, characterized in that: The second driving assembly (6) comprises a sliding seat (61), upper and lower sliders (62), front and rear sliders (63), upper and lower compression springs (64) and front and rear compression springs (65); the upper and lower sliders (62) are connected to the sliding seat (61) in an up-and-down sliding manner; the upper and lower compression springs (64) are pressed between the two; the front and rear sliders (63) are connected to the sliding seat (61) in an up-and-down sliding manner; one end of the upper and lower compression springs (64) is connected to the front and rear sliders (63) and the other end is fixedly connected to the telescopic inner cavity (a); the upper and lower sliders (62) are provided with a first inclined surface (621); the first inclined surface (621) is inclined upward from front to rear; the front and rear sliders (63) are provided with a second inclined surface (631); the inclination of the second inclined surface (631) is adapted to the inclination of the first inclined surface (621) and is slidably connected to the first inclined surface (621).

6. The air purification module according to claim 5, characterized in that: When the telescopic panel assembly (2) is hidden in the telescopic inner cavity (a), the force of the front and rear compression springs (65) on the front and rear sliders (63) is F10, the elastic coefficient of the front and rear compression springs (65) is K1, and the compression length is X0, then F10=K1*X0, the force of the upper and lower compression springs (64) on the upper and lower sliders (62) is F20, the elastic coefficient of the upper and lower compression springs (64) is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined plane (621) and the horizontal plane is θ, then: F10*cosθ>F20*sinθ.

7. The air purification module according to claim 5, characterized in that: The length of the telescopic panel assembly (2) from the hidden state to the extended state of the telescopic inner cavity (a) is L1, and the distance a between the center of the emission end of the negative ion generator (4) and the front end of the telescopic inner cavity (a) satisfies: a≥D / 2, where D is the head diameter of the emission end of the negative ion generator (4); at this time, the force of the front and rear compression springs (65) on the front and rear sliders (63) is F11, the elastic coefficient of the front and rear compression springs (65) is K1, and the compression length is X1=X0-L1, then F11=K1*X1, the force of the upper and lower compression springs (64) on the upper and lower sliders (62) is F20, the elastic coefficient of the upper and lower compression springs (64) is K2, and the compression length is Y0, then F20=K2*Y0, the angle between the first inclined surface (621) and the horizontal plane is θ, then: F11*cosθ=F20*sinθ.

8. The air purification module according to claim 5, characterized in that: When the telescopic panel assembly (2) is fully extended out of the telescopic inner cavity (a), the length of the telescopic panel assembly (2) extending out of the telescopic inner cavity (a) is L2, the distance from the emitting end of the negative ion generator (4) to the bottom of the telescopic panel assembly (2) is h, the head diameter of the emitting end of the negative ion generator (4) is D, h>D, 2㎜≤D≤5㎜, the compression length Y2 of the upper and lower sliders (62) satisfies Y2≥h, and at this time, the front and rear compression springs (65) are pressed against the The force of the front and rear sliders (63) is F12, the elastic coefficient of the front and rear compression springs (65) is K1, and the compression length is X2= / X0-L2 / , then F12=K1*X2, the force of the upper and lower compression springs (64) on the upper and lower sliders (62) is F22, the elastic coefficient of the upper and lower compression springs (64) is K2, and the compression length is Y2, then F22=K2*Y2, the angle between the first inclined plane (621) and the horizontal plane is θ, then: F12*cosθ<F22*sinθ.

9. The air purification module according to claim 1, characterized in that: The wind curtain assembly (3) comprises an air duct (31), the air inlet side of the air duct (31) corresponds to the wind curtain air inlet (22), the air outlet side of the air duct (31) corresponds to the wind curtain air outlet (21), and the negative ion generator (4) is arranged in the air duct, and its emission end passes through the air outlet side of the air duct (31) and can rise or fall through the wind curtain air outlet (21).

10. A range hood, using the air purification module according to any one of claims 1 to 9, characterized in that: It also includes a PM2.5 detection module (7), which is arranged in the installation cavity of the telescopic panel assembly (2), and a detection air inlet hole (23) corresponding to the PM2.5 detection module (7) is provided on the top plate of the installation cavity of the telescopic panel assembly (2), and when the telescopic panel assembly (2) is fully extended out of the telescopic inner cavity (a), the detection air inlet hole (23) extends out of the telescopic inner cavity (a) along with the telescopic panel assembly (2).

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