Range hood with air purification device

Abstract

The utility model discloses a range hood with an air purification device, which comprises a range hood main body, an air purification device, a range hood cover, an air purification device and an air purification device, and is characterized in that the range hood main body is provided with a front panel; the air purification device is arranged in the range hood main body, and the transmitting end of the air purification device faces the front side of the front panel; the movable panel assembly can move relative to the front panel so as to open or shield the air suction opening; compared with the prior art, the range hood with the air purification device has the advantages that after a user finishes cooking operation and closes the smoke exhaust fan of the range hood, the user can switch the range hood main body to the purification mode or the shutdown mode according to needs, and when the user switches the range hood main body to the purification mode, the user can switch the range hood main body to the shutdown mode. The air purification device can purify the air in the cooking space to eliminate smoke particles dispersed in the air in the cooking space, so that the air in the cooking space is kept clean, oil stains are prevented from being adhered to the wall surface of the cooking space after long-term cooking operation, and the air in the cooking space is clean and the environment is neat.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a range hood with an air purification device. 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. After the user finishes cooking, the user turns off the exhaust fan, and the air in the kitchen is no longer sucked by the exhaust fan, and the air in the kitchen flows internally for circulation. After cooking, if the cooked food in the kitchen is not taken out of the kitchen in time, the smell of the food will 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 a range hood with an air purification device, which is used to solve the above technical problems.

[0004] A range hood with an air purification device, comprising:

[0005] The range hood body has a front panel, and an air inlet is arranged on the front panel;

[0006] An air purification device is arranged in the range hood body, with its emission end facing the front side of the front panel;

[0007] A movable panel assembly, which is movable relative to the front panel to open or cover the air intake port;

[0008] Among them, the range hood main body has an operating mode, a purification mode and an off mode. In the operating mode, the movable panel assembly moves relative to the front panel, the air intake port is opened, and the smoke exhaust fan in the range hood main body runs; in the purification mode, the smoke exhaust fan in the range hood main body is turned off, and the air purification device runs; in the off mode, the smoke exhaust fan in the range hood main body is turned off, the air purification device is turned off, and the air intake port is blocked by the movable panel assembly.

[0009] According to one embodiment of the utility model, it also includes a PM2.5 detection module. When the range hood body is in shutdown mode, the PM2.5 detection module runs and detects the PM2.5 content in the environment. The range hood body switches to operation mode or purification mode according to the detection result of the PM2.5 detection module.

[0010] According to one embodiment of the utility model, the transmitting end of the air purification device has a first position extending beyond the front side of the front panel and a second position retracted not exceeding the front side of the front panel. When the range hood body is in operation mode or shutdown mode, the transmitting end of the air purification device is in the second position. When the range hood body is in purification mode, the transmitting end of the air purification device is in the first position.

[0011] According to one embodiment of the utility model, the air purification device includes a mounting bracket, a mounting slider, a compression spring and a negative ion generator, the mounting slider is slidably connected to the mounting bracket, the compression spring is arranged between the mounting bracket and the mounting slider, the negative ion generator is connected to the mounting slider, the mounting bracket is provided with an electromagnetic relay module, the mounting slider is provided with a magnet corresponding to the electromagnetic relay module or a metal sheet that can be magnetically adsorbed, the mounting bracket is connected to the front panel, and when the electromagnetic relay module is energized, it is attracted to the magnet or magnetically adsorbed metal sheet that can be magnetically adsorbed, the mounting slider slides toward the mounting bracket and compresses the compression spring, and the emitting end of the negative ion generator extends to a first position beyond the front side of the front panel; after the electromagnetic relay module is powered off, the compression spring is reset, the mounting slider moves in a direction away from the mounting bracket, and the emitting end of the negative ion generator retracts to a second position that does not exceed the front side of the front panel.

[0012] According to one embodiment of the utility model, an avoidance channel is provided on the mounting bracket, and an avoidance hole corresponding to the avoidance channel is provided on the front panel. The emission end of the negative ion generator moves along the avoidance channel and extends from the avoidance hole to a first position located on the front side of the front panel or retracts from the avoidance hole to a second position that does not exceed the front side of the front panel.

[0013] According to an embodiment of the utility model, a guide column is provided on the mounting bracket, a guide sleeve is provided on the mounting slide block, and the guide column is slidably connected in the guide sleeve.

[0014] According to one embodiment of the utility model, a mounting cavity is provided on the guide column, and the compression spring is installed in the mounting cavity, and the upper end of the compression spring is connected to the guide sleeve.

[0015] According to an embodiment of the utility model, a guide block is provided on the guide column, a guide groove is provided on the guide sleeve, and the guide block is slidably connected in the guide groove.

[0016] According to one embodiment of the utility model, when the movable panel assembly opens the air inlet, the transmitting end of the air purification device is exposed to the user side, and when the movable panel assembly covers the air inlet, the transmitting end of the air purification device is hidden at the rear side of the movable panel assembly.

[0017] According to one embodiment of the utility model, when the range hood body is in operating mode or purification mode, the air intake port is opened and the transmitting end of the air purification device is exposed to the user side; when the range hood body is in shutdown mode, the air intake port and the transmitting end of the air purification device are shielded by the movable panel assembly.

[0018] Compared with the prior art, the range hood with air purification device of the utility model has the following advantages:

[0019] The range hood with an air purification device of the utility model can switch the range hood body to purification mode or shutdown mode as needed after the user completes cooking and turns off the smoke exhaust fan of the range hood. When the user switches the range hood body to purification mode, the air purification device will purify the air in the cooking space to eliminate smoke particles diffused in the air in the cooking space, keep the air in the cooking space clean, avoid oil stains adhering to the walls of the cooking space after long-term cooking operations, and keep the air in the cooking space clean and the environment tidy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the range hood with an air purification device of the utility model when it is in purification mode;

[0021] Figure 2 for Figure 1 Cross-section view in the AA direction;

[0022] Figure 3 for Figure 2 A magnified view of middle;

[0023] Figure 4 This is a front view of the range hood with an air purification device of the utility model when it is in the off mode;

[0024] Figure 5 for Figure 4 Cross-section along the middle BB direction;

[0025] Figure 6 for Figure 4 Enlarged view of middle B;

[0026] Figure 7 An exploded view of the air purification device of the range hood with the air purification device of the utility model;

[0027] In the figure: 1. range hood body, 11. front panel, 111. air inlet, 2. air purification device, 21. mounting bracket, 211. guide column, 2111. guide block, 22. mounting slider, 221. guide sleeve, 2211. guide groove, 23. compression spring, 24. negative ion generator, 25. electromagnetic relay module, 26. magnet, 3. movable panel assembly.

[0028] 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

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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:

[0033] See also Figures 1 to 6The utility model discloses a range hood with an air purification device, the utility model discloses a range hood with an air purification device comprises a range hood main body 1, an air purification device 2 and a movable panel assembly 3, the range hood main body 1 comprises a front panel 11, and an air suction port 111 is arranged on the front panel 11; the air purification device 2 is arranged in the range hood main body 1, and its emitting end faces the front side of the front panel 11; the movable panel assembly 3 can be moved relative to the front panel 11 to open or cover the air suction port 111; wherein the range hood main body 1 has an operation mode, a purification mode and an off mode, wherein in the operation mode, the movable panel assembly 3 moves relative to the front panel 11, the air suction port 111 is opened, and the smoke exhaust fan in the range hood main body 1 operates; in the purification mode, the smoke exhaust fan in the range hood main body 1 is turned off, and the air purification device 2 operates; in the off mode, the smoke exhaust fan in the range hood main body 1 is turned off, the air purification device 2 is turned off, and the air suction port 111 is covered by the movable panel assembly 3. The utility model of the range hood with air purification device, when the user is cooking, the user starts the range hood, the range hood body 1 enters the operation mode, the exhaust fan of the range hood body 1 runs, and at the same time the movable panel assembly 3 moves relative to the front panel 11 of the range hood body 1 and opens the air inlet 111 on the front panel 11. Under the action of the exhaust fan of the range hood body 1, the oil smoke generated by the user's cooking enters the smoke collecting chamber of the range hood body 1 through the air inlet 111 on the front panel 11, and then is discharged by the exhaust fan; after the user completes the cooking operation, the user can switch the range hood body 1 to the purification mode, the air purification device 2 runs, and the air purification device removes smoke and dust from the cooking space, so that the air in the cooking space remains fresh. When the range hood body 1 is in the purification mode, the exhaust fan of the range hood body 1 is turned off, and the negative ions generated by the air purification device 2 will not be sucked into the air collecting chamber of the range hood body 1 by the exhaust fan through the air inlet, so that the air purification device 2 purifies the air in the cooking space, and purifies the air in the cooking space during the air flow process. After the air purification device 2 completes the purification operation, the range hood body 1 enters the shutdown mode from the purification mode. In the shutdown mode, the smoke exhaust fan in the range hood body 1 is turned off, and the air purification device 2 is turned off. At the same time, in order to avoid the backflow of oil smoke, the movable panel assembly 3 moves relative to the front panel 11, and the air intake port 111 is blocked by the movable panel assembly 3.

[0034] The range hood with an air purification device of the utility model can switch the range hood body 1 to the purification mode or the shutdown mode as needed after the user completes the cooking operation and turns off the smoke exhaust fan of the range hood. When the user switches the range hood body 1 to the purification mode, the air purification device 2 will purify the air in the cooking space to eliminate smoke particles diffused in the air in the cooking space, so as to keep the air in the cooking space clean, avoid oil stains adhering to the walls of the cooking space after long-term cooking operations, and keep the air in the cooking space clean and the environment tidy.

[0035] In the range hood with an air purification device of the utility model, the air purification device 2 can purify the air in the cooking space by using a negative ion purification module to generate negative ions, or by using an ozone generator to generate ozone. When using negative ions to purify the air in the cooking space, the transmitting end of the air purification device 2 sends negative ions to the user side, and the negatively charged negative ions are electrode-neutralized with the positively charged smoke and dust floating in the air, so that they are naturally deposited to achieve the function of eliminating smoke and dust. In this embodiment, the air purification device 2 uses a negative ion generator.

[0036] In the range hood with air purification device of the utility model, the movable panel assembly 3 is not restricted in the way it moves relative to the front panel 11. The movable panel assembly 3 can rotate relative to the front panel 11 to open the air inlet 111, or it can slide up and down along the front panel 11 to open the air inlet 111. Figures 1 to 6 In the illustrated embodiment, the movable panel assembly 3 is located at the front side of the front panel 11 , and the movable panel assembly 3 slides up and down along the front panel 11 to open or close the air inlet 111 .

[0037] The range hood with air purification device of the utility model also includes a PM2.5 detection module (not shown in the figure). When the range hood body 1 is in shutdown mode, the PM2.5 detection module runs and detects the PM2.5 content in the environment, and the range hood body 1 switches to the operation mode or purification mode according to the detection result of the PM2.5 detection module. After the user completes the cooking operation, if the range hood body 1 enters the shutdown mode, the PM2.5 detection module will detect the air quality of the cooking space in real time. If it is detected that the PM2.5 content in the air exceeds the standard, the range hood body 1 will switch from shutdown mode to purification mode, and the air purification device 2 will start and purify the air in the cooking space. During the process of the air purification device 2 purifying the air in the cooking space, the PM2.5 detection module continues to detect the air quality. When the air quality reaches the standard, the range hood body 1 enters the shutdown mode again.

[0038] The control module of the range hood main body 1 can set the working period of the PM2.5 detection module. For example, during the time period from 21:00 to 5:30 at night, the probability of a user entering the cooking space is relatively small. The control module of the range hood main body 1 can turn off the PM2.5 detection module during this time period to avoid wasting electricity. During the time periods from 5:30 to 9:00, 11:00 to 13:00, and 17:00 to 20:30, the probability of a user entering the cooking space is relatively high. The control system of the range hood main body 1 can start the PM2.5 detection module during these time periods to monitor the air quality of the cooking space, so that the user has a healthy cooking environment when entering the cooking space.

[0039] During the time period for setting the start-up of the PM2.5 detection module, the PM2.5 content value range for the range hood body 1 to enter the purification mode is set to A to B. During the corresponding time period, if the PM2.5 detection module runs and detects that the PM2.5 content value is less than A, the range hood body 1 continues to be in the shutdown mode; if the PM2.5 detection module runs and detects that the PM2.5 content value is greater than A and less than B, the range hood body 1 enters the purification mode from the shutdown mode; if the PM2.5 detection module runs and detects that the PM2.5 content value is greater than B, the range hood body 1 enters the operation mode from the shutdown mode, the air intake port 111 opens, and the exhaust fan of the range hood body 1 runs and draws air from the cooking space to ventilate the cooking air until the PM2.5 content is less than A.

[0040] The range hood with air purification device of the utility model has a PM2.5 detection module. In addition to detecting the air quality of the cooking space when the range hood body 1 is in the shutdown mode, when the range hood body 1 is in the working mode, the PM2.5 detection module also determines the smoke extraction effect of the smoke exhaust fan at the current power by detecting the PM2.5 content value in the air. If the PM2.5 detection module detects that the PM2.5 content in the air exceeds the standard when the smoke exhaust fan is running at the current power, it means that there is smoke escaping at the current power, and the smoke exhaust fan needs to increase the power to operate in order to enhance the suction force of the smoke. When the control system of the range hood body 1 has a corresponding control program, the control system of the range hood body 1 can automatically increase the operating power of the range hood; when the control system does not have a corresponding control program, the user can adjust the power of the smoke exhaust fan according to the detection result of the PM2.5 detection module.

[0041] See also Figures 1 to 6 In the range hood with air purification device of the utility model, the transmitting end of the air purification device 2 has a first position extending beyond the front side of the front panel 11 and a second position retracted to not extend beyond the front side of the front panel 11. When the range hood body 1 is in the operation mode or the shutdown mode, the transmitting end of the air purification device 2 is in the second position. When the range hood body 1 is in the purification mode, the transmitting end of the air purification device 2 is in the first position. When the air purification device 2 adopts the negative ion purification mode, after the range hood body 1 enters the purification mode, the transmitting end of the air purification device 2 extends to the first position beyond the front side of the front panel 11. In the first position, the transmitting end of the air purification device 2 protrudes from the front side of the front panel 11 and approaches the user side. In this way, the negative ions generated by the air purification device 2 diffuse farther to the user side, and the distance between the negative ions and the front panel 11 is also farther, which can prevent the negative ions from contacting with the front panel 11 and being annihilated, improve the utilization rate of the negative ions, and have a better air purification effect.

[0042] See also Figures 1 to 6In the range hood with air purification device of the utility model, when the movable panel assembly 3 opens the air inlet 111, the transmitting end of the air purification device 2 is exposed to the user side, and when the movable panel assembly 3 covers the air inlet 111, the transmitting end of the air purification device 2 is hidden at the rear side of the movable panel assembly 3. In the illustrated embodiment, the movable panel assembly 3 moves up and down along the front panel 11 to open or close the air inlet 111. The air purification device 2 is exposed to the user side when the movable panel assembly 3 opens the air inlet 111, and is hidden at the rear side of the movable panel assembly 3 when the movable panel assembly 3 closes the air inlet 111. That is, when the range hood body 1 is in the operation mode or purification mode, the air inlet 111 is opened, and the transmitting end of the air purification device 2 is exposed to the user side; when the range hood body 1 is in the shutdown mode, the air inlet 111 and the transmitting end of the air purification device 2 are covered by the movable panel assembly 3. In the illustrated embodiment, the air purification device 2 is arranged on the left and right sides of the air intake port 111. When the movable panel assembly 3 closes the air intake port 111, the transmitting end of the air purification device 2 is hidden at the rear side thereof, so that the appearance of the range hood body 1 can be kept intact, and the transmitting end of the air purification device 2 can be prevented from being exposed to the air for a long time, absorbing a large amount of dust, affecting the generation of negative ions, and affecting the purification effect of the air purification device 2 on the air.

[0043] See also Figures 1 to 7The utility model of the range hood with an air purification device, the air purification device 2 includes a mounting bracket 21, a mounting slider 22, a compression spring 23 and a negative ion generator 24, the mounting slider 22 is slidably connected to the mounting bracket 21, the compression spring 23 is arranged between the mounting bracket 21 and the mounting slider 22, the negative ion generator 24 is connected to the mounting slider 22, the mounting bracket 21 is provided with an electromagnetic relay module 25, and the mounting slider 22 is provided with a magnet 26 corresponding to the electromagnetic relay module 25 or a metal sheet that can be magnetically adsorbed, The mounting bracket 21 is connected to the front panel 11. When the electromagnetic relay module 25 is powered on, it is attracted to the magnet 26 or a metal sheet that can be magnetically adsorbed. The mounting slider 22 slides toward the mounting bracket 21 and compresses the compression spring 23. The emitting end of the negative ion generator 24 extends to a first position beyond the front side of the front panel 11. After the electromagnetic relay module 25 is powered off, the compression spring 23 is reset, the mounting slider 22 moves in a direction away from the mounting bracket 21, and the emitting end of the negative ion generator 24 retracts to a second position that does not exceed the front side of the front panel 11. When the range hood body 1 enters the purification mode, the air purification device 2 is started, the electromagnetic relay module 25 is energized and generates magnetism, the magnetic pole of the electromagnetic relay module 25 facing the magnet 26 or the metal sheet that can be magnetically absorbed is opposite to the magnetic pole of the magnet 26 or the metal sheet that can be magnetically absorbed facing the electromagnetic relay module 25, the electromagnetic relay module 25 and the magnet 26 or the metal sheet that can be magnetically absorbed attract each other, the mounting slider 22 approaches the mounting bracket 21 and compresses the compression spring 23, and during the movement of the mounting slider 22 toward the mounting bracket 21, the negative ion generator 24 moves with the mounting slider 22 and extends toward the front side of the front panel 11, after moving into place, the negative ion generator 24 is energized, and its emission end releases a large number of electrons at a high speed, and the electrons cannot exist in the air for a long time, and will be immediately captured by the oxygen molecules in the air, thereby generating air negative ions, and the negatively charged negative ions are electrode-neutralized with the positively charged smoke and dust floating in the air, so that they are naturally deposited, thereby achieving the purpose of refreshing air and removing smoke and dust. During the process of starting the air purification device 2 and purifying the air, the PM2.5 detection module detects the PM2.5 content value in the air in real time. When the PM2.5 content value in the air reaches the standard, the negative ion generator 24 is powered off, the electromagnetic relay module 25 is powered off and the magnetism disappears. The suction force of the magnet 26 or the metal sheet that can be magnetically adsorbed on the electromagnetic relay module 25 after the power is turned off is less than the force of the compression spring 23 to reset the mounting slider 22. The mounting slider 22 moves in a direction away from the mounting bracket 21. During the movement of the mounting slider 22 in a direction away from the mounting bracket 21, the negative ion generator 24 moves with the mounting slider 22 and retracts in a direction away from the front side of the front panel 11. After the compression spring 23 is reset to the initial state, the emitting end of the negative ion generator 24 retracts to a second position that does not exceed the front side of the front panel 11.

[0044] See also Figure 7In the range hood with air purification device of the utility model, the mounting bracket 21 is provided with an avoidance channel, and the front panel 11 is provided with an avoidance hole corresponding to the avoidance channel. The emission end of the negative ion generator 24 moves along the avoidance channel and extends from the avoidance hole to the first position located at the front side of the front panel 11 or retracts from the avoidance hole to the second position not exceeding the front side of the front panel 11. When the electromagnetic relay module 25 is powered on, the emission end of the negative ion generator 24 moves from the second position to the first position, moves along the avoidance channel and extends from the avoidance hole to the front side of the front panel 11; when the electromagnetic relay module 25 is powered off, the emission end of the negative ion generator 24 moves from the first position to the second position, moves along the avoidance channel, and its emission end retracts from the avoidance hole to the second position not exceeding the front side of the front panel 11.

[0045] See also Figure 7 In the range hood with air purification device of the utility model, the mounting bracket 21 is provided with a guide column 211, and the mounting slider 22 is provided with a guide sleeve 221, and the guide column 211 is slidably connected in the guide sleeve 221. In the process of the mounting slider 22 approaching or moving away from the mounting bracket 21, the guide column 211 slides along the guide sleeve 221, which can play a guiding role, ensure the linear movement of the mounting slider 22, and prevent the movement path of the negative ion generator 24 from being offset and not being able to extend out of the avoidance hole on the front panel 11.

[0046] See also Figure 7 In the range hood with air purification device of the utility model, a mounting cavity is provided on the guide column 211, and the compression spring 23 is installed in the mounting cavity, and its upper end is connected to the guide sleeve 221. When the electromagnetic relay module 25 is powered on and the mounting slide 22 moves toward the mounting bracket 21, the compression spring 23 can only be deformed in the mounting cavity of the guide column 211. In this way, when the electromagnetic relay module 25 is powered off and the compression spring 23 is reset, its extension direction can only extend along the height direction of the guide column 211, which can ensure the linear movement of the mounting slide 22.

[0047] See also Figure 7 In the range hood with an air purification device of the utility model, a guide block 2111 is provided on the guide column 211, a guide groove 2211 is provided on the guide sleeve 221, and the guide block 2111 is slidably connected in the guide groove 2211. When the guide column 211 slides along the guide sleeve 221, the guide block 2111 slides along the guide groove 2211, and the guide groove 2211 limits the moving distance of the guide block 2111, so that the guide column 211 is limited by the guide sleeve 221, and when the compression spring 23 is reset, the installation slide block 22 can be prevented from being separated from the installation bracket 21.

[0048] 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. A range hood with an air purification device, characterized in that: include: A range hood body (1) having a front panel (11), wherein the front panel (11) is provided with an air inlet (111); An air purification device (2) is arranged in the range hood body (1), with its emission end facing the front side of the front panel (11); A movable panel assembly (3) which is movable relative to the front panel (11) to open or cover the air inlet (111); The range hood body (1) has an operation mode, a purification mode and an off mode. In the operation mode, the movable panel assembly (3) moves relative to the front panel (11), the air intake port (111) opens, and the smoke exhaust fan in the range hood body (1) operates; in the purification mode, the smoke exhaust fan in the range hood body (1) is turned off, and the air purification device (2) operates; in the off mode, the smoke exhaust fan in the range hood body (1) is turned off, the air purification device (2) is turned off, and the air intake port (111) is shielded by the movable panel assembly (3).

2. The range hood with an air purification device according to claim 1, characterized in that: It also includes a PM2.5 detection module. When the range hood body (1) is in shutdown mode, the PM2.5 detection module operates and detects the PM2.5 content in the environment. The range hood body (1) switches to the operating mode or purification mode according to the detection result of the PM2.5 detection module.

3. The range hood with an air purification device according to claim 1, characterized in that: The transmitting end of the air purification device (2) has a first position extending beyond the front side of the front panel (11) and a second position retracted not exceeding the front side of the front panel (11). When the range hood body (1) is in operation mode or shutdown mode, the transmitting end of the air purification device (2) is in the second position. When the range hood body (1) is in purification mode, the transmitting end of the air purification device (2) is in the first position.

4. The range hood with an air purification device according to claim 1, characterized in that: The air purification device (2) comprises a mounting bracket (21), a mounting slider (22), a compression spring (23) and a negative ion generator (24); the mounting slider (22) is slidably connected to the mounting bracket (21); the compression spring (23) is arranged between the mounting bracket (21) and the mounting slider (22); the negative ion generator (24) is connected to the mounting slider (22); an electromagnetic relay module (25) is arranged on the mounting bracket (21); a magnet (26) or a metal sheet that can be magnetically attracted and corresponds to the electromagnetic relay module (25) is arranged on the mounting slider (22); the mounting bracket (21) is connected to the mounting slider (21); On the front panel (11), when the electromagnetic relay module (25) is powered on, it attracts the magnet (26) or magnetically attracts a metal sheet that can be magnetically attracted, the mounting slider (22) slides toward the mounting bracket (21) and compresses the compression spring (23), and the emission end of the negative ion generator (24) extends to a first position beyond the front side of the front panel (11); after the electromagnetic relay module (25) is powered off, the compression spring (23) is reset, the mounting slider (22) moves in a direction away from the mounting bracket (21), and the emission end of the negative ion generator (24) retracts to a second position that does not exceed the front side of the front panel (11).

5. The range hood with an air purification device according to claim 4, characterized in that: The mounting bracket (21) is provided with an avoidance channel, the front panel (11) is provided with an avoidance hole corresponding to the avoidance channel, and the emission end of the negative ion generator (24) moves along the avoidance channel and extends from the avoidance hole to a first position located in front of the front panel (11) or retracts from the avoidance hole to a second position that does not extend beyond the front of the front panel (11).

6. The range hood with an air purification device according to claim 4, characterized in that: The mounting bracket (21) is provided with a guide column (211), the mounting slide block (22) is provided with a guide sleeve (221), and the guide column (211) is slidably connected in the guide sleeve (221).

7. The range hood with an air purification device according to claim 6, characterized in that: The guide column (211) is provided with a mounting cavity, the compression spring (23) is mounted in the mounting cavity, and the upper end of the compression spring (23) is connected to the guide sleeve (221).

8. The range hood with an air purification device according to claim 6, characterized in that: The guide column (211) is provided with a guide block (2111), the guide sleeve (221) is provided with a guide groove (2211), and the guide block (2111) is slidably connected in the guide groove (2211).

9. The range hood with an air purification device according to claim 1, characterized in that: When the movable panel assembly (3) opens the air inlet (111), the transmitting end of the air purification device (2) is exposed to the user side; when the movable panel assembly (3) covers the air inlet (111), the transmitting end of the air purification device (2) is hidden at the rear side of the movable panel assembly (3).

10. The range hood with an air purification device according to claim 9, characterized in that: When the range hood body (1) is in operation mode or purification mode, the air inlet (111) is opened and the transmitting end of the air purification device (2) is exposed to the user side; when the range hood body (1) is in shutdown mode, the air inlet (111) and the transmitting end of the air purification device (2) are shielded by the movable panel assembly (3).

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