Air purification module and range hood with same

Abstract

The utility model discloses an air purification module and a range hood with the air purification module, the air purification module comprises a mounting seat which is provided with an air duct, one side wall surface of the air duct is provided with a clamping groove, and a bottom plate of the air duct is provided with an air outlet; the purification assembly comprises a high-voltage pack, a negative ion emission head and a mounting part, the negative ion emission head is mounted on the mounting part, the mounting part is clamped in the clamping groove and enables the negative ion emission head to extend into the air duct, and an included angle is formed between the arrangement direction of the negative ion emission head and the airflow direction in the air duct; compared with the prior art, according to the air purification module, the anion emission head is arranged in the air channel, and the distance between the anion emission head and the lower surface of the bottom of the air channel is at least not smaller than the thickness of the bottom plate of the air channel, so that when a hand of a user approaches the lower surface of the bottom plate of the air channel, an electric shock feeling is avoided, and user experience is improved; when the hand of a user touches the lower surface of the bottom plate of the electric control cavity, the tip of the negative ion emission head cannot be touched, and safety is improved.

Description

Technical Field

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

[0002] The range hood is used to suck cooking fumes when a user is performing cooking operations, so as to discharge the cooking fumes generated by the user from the kitchen. With the development of range hood technology, a range hood with a purification function has emerged on the market. In this range hood, an air purification module is arranged in the electric control cavity, and through holes communicating with the outside are provided on the bottom plate of the electric control cavity. The air purification module uses negative ion purification. The emission end of the negative ion module extends into the through hole and extends out or is close to the lower surface of the bottom plate of the electric control cavity. After the negative ion module is powered on, the negative ions emitted by the emission end of the negative ion module diffuse to the outside of the range hood through the through holes on the bottom plate of the electric control cavity to purify the air in the use space. This setting method of making the emission end of the negative ion module extend into the through hole and extend out or be close to the lower surface of the bottom plate of the electric control cavity through the through hole enables the negative ions generated by the negative ion module to diffuse out quickly, but the drawback is that when the user's hand approaches the through hole on the bottom plate of the electric control cavity, the user will have a feeling of electric shock, which affects the user experience. Summary of the Utility Model

[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 technical problems.

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

[0005] A mounting seat having an air duct, a clamping groove is provided on one side wall surface of the air duct, and an air outlet is provided on the bottom plate of the air duct;

[0006] A purification component, which includes a high-voltage package, a negative ion emitter and a mounting member. The negative ion emitter is mounted on the mounting member. The mounting member is clamped in the clamping groove and the negative ion emitter extends into the air duct. The setting direction of the negative ion emitter forms an angle with the air flow direction in the air duct.

[0007] According to an embodiment of the utility model, the setting direction of the negative ion emitter forms an angle of 0° to 90° with the air flow direction in the air duct.

[0008] According to an embodiment of the utility model, a first extension wall extending into the clamping groove is provided at the edge of the side wall surface of the clamping groove far from the air duct. Two relatively arranged limiting blocks are provided on the bottom plate of the air duct. The front and rear ends of the mounting member are respectively limited by the first extension wall and the limiting blocks, and the negative ion emitter extends out between the two limiting blocks.

[0009] According to an embodiment of the present utility model, the mounting member is L-shaped, including a first part arranged vertically and a second part arranged horizontally. The width and height of the first part are adapted to the clamping groove. An installation channel is provided on the mounting member, penetrating through the first part and the second part and arranged along the length direction of the second part. The negative ion emitter is installed in the installation channel, and its emitting end extends out from the second part.

[0010] According to an embodiment of the present utility model, air duct holes are provided on the bottom plate of the air duct along the air flow direction inside the air duct. The negative ion emitter is aligned with the air duct holes, and the diameter of the air duct holes is not less than the size of the part of the negative ion emitter extending into the air duct.

[0011] According to an embodiment of the present utility model, the wall surface surrounding the air duct hole extends downward from the lower surface of the air duct and has a bottom surface. Air holes are provided on the bottom surface for the air flow containing negative ions to flow out.

[0012] According to an embodiment of the present utility model, it further includes a fan assembly. The fan assembly is installed on the mounting seat, and the fan assembly sucks air and supplies air to the air duct.

[0013] A range hood has the above air purification module, including a range hood main body. The range hood main body has an electric control cavity. An air inlet hole is provided on the top plate of the electric control cavity, and an air outlet hole is provided on the bottom plate of the electric control cavity. The mounting seat is installed in the electric control cavity, and the air outlet of the mounting seat is aligned with the air outlet hole. The air outside the range hood main body enters the air duct through the air inlet hole and then is discharged through the air outlet hole.

[0014] According to an embodiment of the present utility model, a mounting plate is provided in the electric control cavity. An avoidance opening corresponding to the air duct is provided on the mounting plate. A buckle is provided on one side of the avoidance opening and a connecting part is provided on the other side of the avoidance opening on the mounting plate. A clamping groove corresponding to the buckle and a connecting position corresponding to the connecting part are provided on the mounting seat. The mounting seat is installed on the mounting plate and is connected to the mounting plate through the buckle and the connecting part respectively.

[0015] According to an embodiment of the present utility model, air duct holes are provided on the bottom plate of the air duct along the air flow direction inside the air duct. The wall surface surrounding the air duct hole extends downward from the lower surface of the air duct and has a bottom surface. A through hole corresponding to the air duct hole is provided on the bottom plate of the electric control cavity. The part of the wall surface surrounding the air duct hole extending out from the lower surface of the bottom plate of the air duct extends out of the electric control cavity through the through hole.

[0016] Compared with the prior art, the air purification module of the present utility model has the following advantages:

[0017] For the air purification module of the present utility model, since the negative ion emitter is arranged in the air duct, and the distance from its lower surface to the bottom surface of the air duct is at least not less than the thickness of the bottom plate of the air duct, when a user's hand approaches the lower surface of the bottom plate of the air duct, there will be no feeling of electric shock, improving the user experience. Also, when the user's hand touches the lower surface of the bottom plate of the electric control cavity, the tip of the negative ion emitter cannot be touched, enhancing safety. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural view of the air purification module of the present utility model;

[0019] Figure 2 is an exploded view of the air purification module of the present utility model;

[0020] Figure 3 is a schematic structural view of the mounting seat of the air purification module of the present utility model;

[0021] Figure 4 is a schematic structural view of the mounting seat of the air purification module of the present utility model in another direction;

[0022] Figure 5 is a schematic structural view of a range hood with the air purification module of the present utility model;

[0023] Figure 6 is a schematic structural view of a range hood with the air purification module of the present utility model in another direction;

[0024] Figure 7 is a sectional view of a range hood with the air purification module of the present utility model;

[0025] Figure 8 is a schematic structural view of the mounting plate;

[0026] In the figures: 1. Mounting seat, 11. Air duct, 111. Clamping groove, 1111. First extension wall, 112. Air outlet, 113. Limiting block, 114. Air duct hole, 12. Card slot, 13. Connection position, 2. Purification component, 21. Negative ion emitter, 22. Mounting part, 221. First part, 222. Second part, 3. Fan component, 4. Range hood main body, 41. Electric control cavity, 42. Air inlet hole, 43. Air outlet hole, 44. Mounting plate, 441. Avoidance opening, 442. Buckle, 443. Connection part.

[0027] The realization and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0028] The following will disclose multiple embodiments of the present utility model in diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0030] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present utility model. It is 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] To further understand the content, features, and effects of the present utility model, the following embodiments are exemplified and described in detail with reference to the attached drawings as follows:

[0032] Please refer to Figures 1 to 4 , the present utility model discloses an air purification module. The air purification module disclosed by the present utility model is used for a range hood and includes a mounting base 1 and a purification component 2. The mounting base 1 has an air duct 11. A clamping groove 111 is provided on one side wall surface of the air duct 11, and an air outlet 112 is provided on the bottom plate of the air duct 11. The purification component 2 includes a high-voltage package, a negative ion emitter 21, and a mounting member 22. The negative ion emitter 21 is mounted on the mounting member 22. The mounting member 22 is clamped in the clamping groove 111 and makes the negative ion emitter 21 extend into the air duct 11. The setting direction of the negative ion emitter 21 forms an angle with the air flow direction in the air duct 11, and the range of the angle is from 0° to 90°.

[0033] For the air purification module of the present utility model, since the negative ion emitter 21 is arranged in the air duct, and the distance from its lower surface to the bottom surface of the air duct 11 is at least not less than the thickness of the bottom plate of the air duct 11, when a user's hand approaches the lower surface of the bottom plate of the air duct 11, there will be no feeling of electric shock, improving the user experience. Also, when the user's hand touches the lower surface of the bottom plate of the electric control cavity, the tip of the negative ion emitter 21 cannot be touched, enhancing safety.

[0034] In some embodiments, the negative ion emitter 21 is arranged perpendicular to the air flow direction in the air duct 11. At this time, the setting direction of the negative ion emitter 21 forms a 90° angle with the air flow direction in the air duct 11. When applied to a range hood, the air flow in the air duct 11 flows from top to bottom. Therefore, the negative ion emitter 21 is horizontally arranged in the air duct 11. When the purification component 2 is started, the negative ion emitter 21 emits negative ions, and the negative ions flow downward along with the air flow in the air duct and flow out of the air duct through the air outlet 112 at the bottom of the air duct to purify the air in the kitchen space. For the air purification module of the present utility model, the principle of negative ion air purification is as follows: The high-voltage package of the purification component 2 processes the input DC or AC power through the EMI processing circuit and the lightning protection circuit, then boosts it to an AC high voltage through circuits such as a pulse circuit, overvoltage and current limiting, and high and low voltage isolation, and then obtains a pure DC negative high voltage through rectification and filtering by special-grade electronic materials. The DC negative high voltage is connected to the release tip of the negative ion emitter 21 made of metal or carbon element, and high corona is generated by the tip DC high voltage to rapidly release a large number of electrons. Since electrons cannot exist in the air for a long time, they will immediately be captured by oxygen molecules in the air, thus generating air negative ions. Positively charged particulate matters such as soot, dust, and floating dust in the air are easily adsorbed by the negative ions in the air, causing these dust particles to coagulate and become large particles that settle down; after the negative ions combine with bacteria in the air, the structure or energy of the bacteria changes, resulting in the death of the bacteria. Therefore, negative ions can also effectively remove various harmful substances in the air.

[0035] In some other embodiments, the negative ion emitter 21 is arranged parallel to the air flow direction in the air duct 11. At this time, the setting direction of the negative ion emitter 21 forms a 0° angle with the air flow direction in the air duct 11, and the emission end of the negative ion emitter 21 faces the bottom plate of the air duct 11. When the purification component 2 is started, the negative ion emitter 21 emits negative ions, and the negative ions flow downward along with the air flow in the air duct and flow out of the air duct through the air outlet 112 at the bottom of the air duct.

[0036] In some other embodiments, the setting direction of the negative ion emitter 21 forms an angle with the air flow direction in the air duct 11, the angle is less than 90° and greater than 0°, the emitting end of the negative ion emitter 21 faces the bottom plate of the air duct 11. When the purification component 2 is started, the negative ion emitter 21 emits negative ions, and the negative ions flow downward along the air flow in the air duct and flow out of the air duct through the air outlet 112 at the bottom of the air duct.

[0037] Please refer to Figure 3 , for the air purification module of the present utility model, a first extension wall 1111 extending into the clamping groove 111 is provided at the edge of the side wall of the clamping groove 111 away from the air duct 11. Two oppositely arranged limiting blocks 113 are provided on the bottom plate of the air duct 11. The front and rear ends of the mounting member 22 are respectively limited by the first extension wall 1111 and the limiting blocks 113, and the negative ion emitter 21 extends out between the two limiting blocks 113.

[0038] For the air purification module of the present utility model, when assembling the air purification module, after the mounting member 22 of the purification component 2 is clamped into the clamping groove 111 from the opening above the clamping groove 111, the mounting member 22 is clamped between the first extension wall 1111 and the limiting blocks 113 in the front-rear direction, and the negative ion emitter 21 extends out between the two limiting blocks 113 and extends into the air duct 11. The negative ion emitter 21 will not move in the front-rear direction, which can keep the position of the negative ion emitter 21 fixed in the air duct 11 and avoid the displacement of the negative ion emitter 21 in the front-rear direction during use.

[0039] Please refer to Figure 2 , for the air purification module of the present utility model, the mounting member 22 is L-shaped, including a first part 221 arranged vertically and a second part 222 arranged horizontally. The width and height of the first part 221 are adapted to the clamping groove 111. An installation channel penetrating the first part 221 and the second part 222 and arranged along the length direction of the second part 222 is provided on the mounting member 22. The negative ion emitter 21 is installed in the installation channel, and its emitting end extends out from the second part 222. The mounting member 22 is arranged in an L shape. The first part 221 can be adapted to the clamping groove 111 in the height direction and the width direction, and the second part 222 only needs to be adapted to the clamping groove 111 in the width direction. This not only facilitates the installation of the mounting member 22 in the clamping groove 111, but also enables the mounting member 22 to be stably installed in the clamping groove 111. At the same time, the part of the negative ion emitter 21 extending out of the mounting member 22 can be completely placed in the air duct 11. In this embodiment, the material of the mounting member 22 is a non-conductive plastic material, and the mounting seat 1 is also a non-conductive plastic material. After the negative ions generated by the negative ion emitter 21 contact the mounting member 22 and the mounting seat 1, the mounting member 22 and the mounting seat 1 will not be charged.

[0040] Please refer to Figure 3, for the air purification module of the present utility model, air duct holes 114 are provided on the bottom plate of the air duct 11 along the air flow direction inside the air duct 11. The negative ion emitter 21 is aligned with the air duct holes 114, and the diameter of the air duct holes 114 is not less than the size of the part of the negative ion emitter 21 extending into the air duct 11. For the air purification module of the present utility model, after the purification component 2 is installed on the mounting seat 1, the negative ion emitter 21 is horizontally arranged inside the air duct 11 and is located above the air duct holes 114. When there is air flowing along the air duct 11, the air flowing through the air duct holes 114 first passes through the negative ion emitter 21, and then flows out of the air duct 11 through the air duct holes 114, and blows the negative ions out of the air duct 11 together, so that the negative ions generated by the purification component 2 purify the air in the kitchen space during the process of diffusing with the air flow.

[0041] Please refer to Figure 4 , for the air purification module of the present utility model, the wall surface surrounding the air duct holes 114 extends downward beyond the lower surface of the air duct 11 and has a bottom surface, and air holes for allowing the air flow containing negative ions to flow out are provided on the bottom surface. The position where the user can be closest to the negative ion emitter 21 is the bottom surface of the wall surface surrounding the air duct holes 114. Extending the wall surface surrounding the air duct holes 114 downward beyond the lower surface of the air duct 11 further increases the distance between the user's hand and the negative ion emitter 21, avoiding the user from having an electric shock feeling, and the bottom surface of the wall surface surrounding the air duct holes 114 can prevent the user's fingers from reaching into the air duct holes 114, which can play a protective role for the user.

[0042] Please refer to Figure 1 and Figure 2 , the air purification module of the present utility model further includes a fan assembly 3. The fan assembly 3 is installed on the mounting seat 1, and the fan assembly 3 sucks air and supplies air to the air duct 11. When the air purification module is started, the fan assembly 3 is started. The fan assembly 3 sucks air and discharges air into the air duct 11. When the air flow discharged by the fan assembly 3 into the air duct 11 flows towards the air outlet 112, it passes through the negative ion emitter 21, so that the negative ions flow towards the air outlet 112 of the air duct 11 with the air flow. The air flow in the air duct 11 finally discharges from the air outlet 112 at the bottom of the air duct 11. For the air purification module of the present utility model, by arranging the fan assembly 3 above the air duct 11, it can divert air into the air duct 11, so that an air flow flowing along the air duct 11 and quickly discharging through the air outlet 112 is formed in the air duct 11, which can improve the diffusion speed of negative ions and the purification effect of the air purification module.

[0043] Please refer to Figure 3, for the air purification module of the present utility model, the bottom plate of the air duct 11 is in a grille shape, including a number of first partitions arranged along the width direction of the air duct 11 and second partitions arranged along the front-back direction of the air duct 11. The second partitions are connected to the first partitions, and a number of strip-shaped air outlets 112 are formed on the bottom plate of the air duct 11. In the illustrated embodiment, the fan assembly 3 includes a cross-flow fan and a volute. The cross-flow fan is arranged above the air duct 11 along the length direction of the air duct 11, and the exhaust side of the cross-flow fan faces the air duct. When the air purification module is started, the fan assembly 3 is started, and the cross-flow fan discharges air into the air duct 11, so that the air flows downward through the air outlets 112. Setting the bottom plate of the air duct 11 in a grille shape and evenly distributing a number of long strip-shaped air outlets 112 on the bottom plate of the air duct 11 can make the air blown out from the air duct 11 be evenly discharged along the length direction of the air duct 11. The length direction of the air duct 11 described here refers to the direction of the width of the range hood when the air purification module is applied to the range hood, which is also the left-right direction of the range hood.

[0044] Please refer to Figure 5 and Figure 7 The present utility model also discloses a range hood. The range hood disclosed by the present utility model has the above-mentioned air purification module, including a range hood main body 4. The range hood main body 4 has an electric control cavity 41. An air inlet hole 42 is provided on the top plate of the electric control cavity, and an air outlet hole 43 is provided on the bottom plate of the electric control cavity 41. The mounting seat 1 is installed in the electric control cavity 41, and the air outlet 112 of the mounting seat 1 is aligned with the air outlet hole 43. The air outside the range hood main body 4 enters the air duct 11 through the air inlet hole 42 and then is discharged through the air outlet hole 43.

[0045] For the range hood of the present utility model, the air purification module is equipped with a fan assembly 3. The fan assembly 3 is aligned with the air curtain air inlet hole 42. When it is necessary to purify the air of the outlet air, the purification assembly 2 and the fan assembly 3 are started. The negative ion emitter 21 emits negative ions. The fan assembly 3 is started. The external air enters the air inlet side of the fan assembly 3 through the air inlet hole 42 under the action of the fan assembly 3 and then is discharged by the fan assembly 3 into the air duct 11. When the air flow discharged by the fan assembly 3 into the air duct 11 flows toward the air outlet 112, it flows through the negative ion emitter 21, so that the negative ions flow with the air flow toward the air outlet 112 of the air duct 11. The air flow in the air duct 11 finally passes through the air outlet 112 at the bottom of the air duct 11 and the air outlet hole 43 on the bottom plate of the electric control cavity 41 in sequence and is sent out of the range hood to purify the air in the kitchen space.

[0046] In some embodiments of the range hood, the air purification module does not have a fan assembly. When it is necessary to purify the air of the outlet air, the purification assembly 2 is started. The negative ion emitter 21 emits negative ions. The air flow entering the electric control cavity 41 through the air inlet hole 42 flows through the negative ion emitter 21 when entering the air duct 11 and flowing out of the air duct 11. The negative ions flow out of the air duct through the air outlet 112 at the bottom of the air duct with the air flow to purify the air in the kitchen space.

[0047] Please refer to Figure 7 and Figure 8 For the range hood of the present utility model, a mounting plate 44 is provided in the electronic control cavity 41. An avoidance opening 441 corresponding to the air duct 11 is provided on the mounting plate 44. A buckle 442 is provided on the mounting plate 44 on one side of the avoidance opening 441, and a connecting portion 443 is provided on the other side of the avoidance opening 441. A clamping groove 12 corresponding to the buckle 442 and a connecting position 13 corresponding to the connecting portion 443 are provided on the mounting seat 1. The mounting seat 1 is mounted on the mounting plate 44 and is connected to the mounting plate 44 through the buckle 442 and the connecting portion 443 respectively. For the range hood of the present utility model, the mounting plate 44 is provided on the bottom plate of the electronic control cavity 41, and the mounting plate 44 is used to connect with the mounting seat 1 of the air purification module. In practical applications, the buckle 442 is located on the front side of the avoidance opening 441 on the mounting plate 44, and the connecting portion 443 is located on the rear side of the avoidance opening 441 on the mounting plate 44. Similarly, the clamping groove 12 is located on the front side wall surface of the mounting seat 1, and the connecting position 13 is located on the rear side of the air duct 11 on the mounting seat 1. In this way, when installing the air purification module, during the process of installing the mounting seat 1 from top to bottom onto the mounting plate 44, the buckle 442 is snapped into the clamping groove 12 on the front side wall surface of the mounting seat 1. While clamping the mounting seat 1 and the mounting plate 44, the mounting seat 1 is also positioned on the mounting plate 44, so that the connecting position 13 on the mounting seat 1 is aligned with the connecting portion 443 on the mounting plate 44. By sequentially passing a connecting member through the screw holes on the connecting position 13 and the connecting portion 443, the connecting portion 443 and the connecting position 13 can be fixed. For the range hood of the present utility model, the buckle 442 is close to the front side of the electronic control cavity 41. In practical applications, it is located on the front side wall surface of the head of the range hood, that is, at a position close to the display panel of the range hood. The corresponding side of the mounting seat 1 of the air purification module is connected to the mounting plate 44 in a clamping manner, which is convenient for assembly. And the connecting position 13 and the connecting portion 443 that need to be connected by the connecting member are located on the side far from the display panel, which is convenient for the user to operate.

[0048] Please refer to Figures 6 to 8 For the range hood of the present utility model, an air outlet hole 43 is provided on the bottom plate of the electronic control cavity 41, which weakens the strength of the corresponding position of the bottom plate of the electronic control cavity 41. An mounting plate 44 with an avoidance opening 441 is provided at the position where the air outlet hole 43 is provided, which can not only strengthen the strength of the bottom plate of the electronic control cavity 41, but also does not affect the air outlet 112 of the air duct from exposing through the air outlet hole 43.

[0049] Please refer to Figure 6, for the range hood of the present utility model, a duct hole 114 is provided on the bottom plate of the air duct 11 along the air flow direction in the air duct 11. The wall surface surrounding the duct hole 114 extends downward beyond the lower surface of the air duct 11 and has a bottom surface. A through hole corresponding to the duct hole 114 is provided on the bottom plate of the electronic control cavity 41. The part of the wall surface surrounding the duct hole 114 that extends beyond the lower surface of the bottom plate of the air duct 11 extends out of the electronic control cavity 41 through the through hole. The air purification module is arranged in the electronic control cavity 41, and it is difficult for users to intuitively feel that the range hood is provided with an air purification module. In this embodiment, the part of the wall surface surrounding the duct hole 114 that extends beyond the lower surface of the bottom plate of the air duct 11 extends out of the electronic control cavity 41 through the through hole. When the user looks at the bottom plate of the electronic control cavity 41, they can see the part of the wall surface surrounding the duct hole 114 that extends out of the through hole and the bottom surface of the duct hole 114, which enables users to intuitively understand that the range hood is provided with an air purification module, and understand the installation position of the air purification module, and an appearance can also be formed.

[0050] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air purification module for a range hood, characterized in that Comprising: A mounting base (1) having an air duct (11), one side wall surface of the air duct (11) is provided with a clamping groove (111), and the bottom plate of the air duct (11) is provided with an air outlet (112); A purification component (2), which includes a high-voltage package, a negative ion emitter (21) and a mounting member (22). The negative ion emitter (21) is mounted on the mounting member (22). The mounting member (22) is clamped in the clamping groove (111) and makes the negative ion emitter (21) extend into the air duct (11). The setting direction of the negative ion emitter (21) forms an angle with the air flow direction in the air duct (11).

2. The air purification module according to claim 1, characterized in that, The setting direction of the negative ion emitter (21) forms an angle of 0° to 90° with the air flow direction in the air duct (11).

3. The air purification module according to claim 1, wherein The edge of the side wall surface of the clamping groove (111) away from the air duct (11) is provided with a first extension wall (1111) extending into the clamping groove (111). Two opposite limiting blocks (113) are provided on the bottom plate of the air duct (11). The front and rear ends of the mounting member (22) are respectively limited by the first extension wall (1111) and the limiting block (113), and the negative ion emitter (21) extends out between the two limiting blocks (113).

4. The air purification module according to claim 1, characterized in that The mounting member (22) is L-shaped, including a first part (221) arranged vertically and a second part (222) arranged horizontally. The width and height of the first part (221) are adapted to the clamping groove (111). The mounting member (22) is provided with a mounting channel penetrating through the first part (221) and the second part (222) and arranged along the length direction of the second part (222). The negative ion emitter (21) is mounted in the mounting channel, and its emitting end extends out from the second part (222).

5. The air purification module according to claim 1, wherein The bottom plate of the air duct (11) is provided with an air duct hole (114) arranged along the air flow direction in the air duct (11). The negative ion emitter (21) is aligned with the air duct hole (114). The diameter of the air duct hole (114) is not less than the size of the part of the negative ion emitter (21) extending into the air duct (11).

6. The air purification module according to claim 5, characterized in that The wall surface surrounding the air duct hole (114) extends downward out of the lower surface of the air duct (11) and has a bottom surface. The bottom surface is provided with air holes for the air flow containing negative ions to flow out.

7. The air purification module according to claim 1, characterized in that, It further includes a fan assembly (3). The fan assembly (3) is mounted on the mounting base (1). The fan assembly (3) sucks air and sends air to the air duct (11).

8. A range hood having the air purification module according to any one of claims 1 to 7, characterized in that It includes a range hood main body (4), the range hood main body (4) has an electric control cavity (41), an air inlet hole (42) is provided on the top plate of the electric control cavity (41), and an air outlet hole (43) is provided on the bottom plate of the electric control cavity (41). The mounting seat (1) is installed in the electric control cavity (41), and the air outlet (112) of the mounting seat (1) is aligned with the air outlet hole (43). The air outside the range hood main body (4) enters the air duct (11) through the air inlet hole (42), and then is discharged through the air outlet hole (43).

9. The cigarette machine according to claim 8, wherein, An installation plate (44) is provided in the electric control cavity (41). An avoidance opening (441) corresponding to the air duct (11) is provided on the installation plate (44). A buckle (442) is provided on one side of the avoidance opening (441) and a connecting portion (443) is provided on the other side of the avoidance opening (441) on the installation plate (44). A clamping groove (12) corresponding to the buckle (442) and a connecting position (13) corresponding to the connecting portion (443) are provided on the mounting seat (1). The mounting seat (1) is installed on the installation plate (44) and is connected to the installation plate (44) through the buckle (442) and the connecting portion (443) respectively.

10. The cigarette machine according to claim 8, wherein, An air duct hole (114) is provided on the bottom plate of the air duct (11) along the air flow direction in the air duct (11). The wall surrounding the air duct hole (114) extends downward from the lower surface of the air duct (11) and has a bottom surface. A through hole corresponding to the air duct hole (114) is provided on the bottom plate of the electric control cavity (41). The part of the wall surrounding the air duct hole (114) that extends out of the lower surface of the bottom plate of the air duct (11) extends out of the electric control cavity (41) through the through hole.

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