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 and a fan, the air purification device is arranged in the range hood main body; wherein the movable panel assembly is used for opening or covering an air suction opening, when the movable panel assembly opens the air suction opening, the transmitting end of the air purification device is exposed, and when the movable panel assembly covers the air suction opening, the transmitting end of the air purification device is hidden; 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, and when the range hood main body is switched to the purification mode, the air purification device can purify air in a cooking space; smoke particles dispersed in air in the cooking space are eliminated, the air in the cooking space is kept clean, oil dirt is prevented from being attached to the wall face of the cooking space, 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 movable panel assembly and an air inlet;

[0006] An air purification device is arranged in the main body of the range hood;

[0007] Among them, the movable panel component is used to open or cover the air intake port. When the movable panel component opens the air intake port, the transmitting end of the air purification device is exposed. When the movable panel component covers the air intake port, the transmitting end of the air purification device is hidden.

[0008] According to one embodiment of the utility model, the air inlet and the air purification device are arranged in sequence along the width direction of the range hood body.

[0009] According to one embodiment of the utility model, the range hood body has a front panel with an air inlet disposed thereon, and the movable panel assembly can be moved relative to the front panel to open or close the air inlet and to expose or hide the emission end of the air purification device.

[0010] According to one embodiment of the utility model, an inwardly recessed receiving groove is provided on the front panel, and the transmitting end of the air purification device is placed in the receiving groove.

[0011] According to one embodiment of the utility model, the air purification device includes a mounting bracket and a negative ion generator, the first side of the mounting bracket has a receiving groove, the negative ion generator is installed on the second side of the mounting bracket, and the emission end thereof is placed in the receiving groove.

[0012] According to an embodiment of the present invention, the head diameter of the emission end of the negative ion generator is D1, the lower edge diameter of the receiving groove is D2, D2≥5mm>D1, 2mm<D1<5mm.

[0013] According to one embodiment of the utility model, the air purification device further includes an air supply component, and an air supply channel connected to the receiving tank is provided on the mounting bracket, and the air supply component supplies air into the receiving tank through the air supply channel.

[0014] According to one embodiment of the utility model, the air supply assembly includes an air duct and a fan. The air duct is connected to the second side of the mounting bracket. The fan is installed at the air inlet of the air duct. The fan sucks air and supplies air to the air duct. The air in the air duct enters the receiving groove through the air supply channel.

[0015] According to an embodiment of the present invention, at least one vent hole is provided on the top of the receiving groove of the mounting bracket, and the vent hole forms an air supply channel.

[0016] According to one embodiment of the present invention, the head diameter of the emitting end of the negative ion generator is D1, the lower edge diameter of the accommodating groove is D2, D2≥5mm>D1, 2mm<D1<5mm, and the diameter of the vent hole is D3, 1mm≤D3≤(D2-D1) / 2.

[0017] Compared with the prior art, the range hood with air purification device of the utility model has the following advantages:

[0018] 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

[0019] Figure 1 This is a front view of the range hood with an air purification device of the utility model when it is in a purification mode or an operating mode;

[0020] Figure 2 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;

[0021] Figure 3 for Figure 1 Cross-section view in the AA direction;

[0022] Figure 4 for Figure 3 A magnified view of middle;

[0023] Figure 5 It is a cross-sectional view of the range hood with an air purification device of the utility model when the second air purification device is used;

[0024] Figure 6 for Figure 5 Enlarged view of middle B;

[0025] Figure 7 It is a cross-sectional view of the range hood with an air purification device of the utility model when the third air purification device is used;

[0026] Figure 8 for Figure 7 Enlarged view of middle C;

[0027] Fig. 9 This is an exploded view of the third air purification device;

[0028] In the figure: 1. range hood body, 11. movable panel assembly, 12. air inlet, 13. front panel, 131. receiving tank, 2. air purification device, 21. mounting bracket, 211. air vent, 22. negative ion generator, 221. carbon fiber head, 222. metal cladding, 223. wire, 23. air duct, 24. fan.

[0029] 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

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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:

[0034] See also Figure 1 and Figure 2The utility model discloses a range hood with an air purification device. The range hood with an air purification device disclosed by the utility model comprises a range hood body 1 and an air purification device 2. The range hood body 1 has a movable panel assembly 11 and an air suction port 12. The air purification device 2 is arranged in the range hood body 1. The movable panel assembly 11 is used to open or cover the air suction port 12. When the movable panel assembly 11 opens the air suction port 12, the emission end of the air purification device 2 is exposed. When the movable panel assembly 11 covers the air suction port 12, the emission end of the air purification device 2 is hidden. The utility model provides a range hood with an air purification device, and the range hood main body 1 has an operation mode, a purification mode and an off mode. In the operation mode, the movable panel assembly 11 opens the air intake port 12, and the smoke exhaust fan in the range hood main body 1 operates, and the smoke exhaust fan forms a negative pressure at the air intake port 12, and the oil smoke generated by the user's cooking enters the smoke collecting chamber of the range hood main body 1 through the air intake port 12, and is then discharged by the smoke exhaust fan; in the purification mode, the smoke exhaust fan in the range hood main body 1 is turned off, and the air purification device 2 is operated, and the air purification device 2 purifies the air in the cooking space to keep the air in the cooking space clean; 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 intake port 12 is shielded by the movable panel assembly 11. 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 the movable panel assembly 11 moves on the range hood body 1, and opens the air inlet 12. 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 12 on the front panel 13, 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. 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 11 moves on the range hood body, and the air intake port 12 is covered and shielded by the movable panel assembly 11. The transmitting end of the air purification device 2 is hidden behind the movable panel assembly 11.

[0035] 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.

[0036] The utility model provides a range hood with an air purification device. 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 negative ions are used 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, thereby achieving the function of eliminating smoke and dust.

[0037] See also Figure 3 and Fig. 9 In this embodiment, the air purification device 2 adopts a negative ion generating device. The negative ion generating device includes a negative ion generator 22, and the negative ion generator 22 includes a carbon fiber head 221 and a metal cladding 222. The metal cladding 222 wraps one end of the carbon fiber head 221, and the metal cladding 222 is connected to a high-voltage package through a wire 223, and the high-voltage package is connected to the circuit board of the range hood. When the negative ion generator 22 is required to generate negative ions, the circuit board connects the high-voltage package to the circuit, and the current of the high-voltage package is transmitted to the metal cladding 222 through the wire 223. The current transmitted to the metal cladding 222 is transmitted along the metal cladding 222 and transmitted to the surface of the carbon fiber head 221, and then transmitted along the surface of the carbon fiber head 221 to the tip of the carbon fiber head 221. The tip of the carbon fiber head 221 discharges, ionizes the air and generates negative ions. The tip of the carbon fiber head 221 is one end away from the metal cladding 222, so that the negative ions generated by the discharge of the tip of the carbon fiber head 221 are not easily extinguished by the metal cladding 222.

[0038] In the negative ion generating device of the utility model, at least the tip of the carbon fiber head 221 is wrapped with PDG organic gel, and the hydrophilic polymer chains and solvent molecules on the surface of the gel can effectively capture gaseous water molecules in the air, and then the water molecules are liquefied and further quickly conducted to the inside of the polymer gel network by the solvent molecules. Since the polymer gel can swell in a large size under the action of water, the volume hidden by itself can swell several times while still maintaining good strength, the water molecules adsorbed inside can be effectively bound to the inside by the polymer chain without obvious leakage and leakage, so the diluted polymer organic gel can effectively capture water molecules in the air and well accommodate and store water molecules. The polymer hygroscopic gel on the surface of the carbon fiber head 221 transfers the adsorbed water molecules to the surface of the carbon fiber head 221 through the hydrophilic effect of the surface of the carbon fiber head 221, and then transfers them to the top of the carbon fiber head 221 by using the water absorption and capillary action of the carbon fiber head 221, and enriches at the tip of the carbon fiber head 221, and then generates negative oxygen ions under voltage.

[0039] In the negative ion generating device of the utility model, the resistance at the metal cladding 222 is R1, the resistance at the tip of the metal cladding 222 connecting one end of the wire 223 to the carbon fiber head 221 is R2, the resistance at the wire 223 is R3, and the resistance at the part of the metal cladding 222 connecting one end of the wire 223 to the middle of the carbon fiber head 221 is R4, then: R3<R1<R2<R4, 2Ω<R1<3.5Ω, 8Ω<R2<13Ω, 1Ω<R3<2Ω, 15Ω<R4<18Ω. The resistance at the carbon fiber head 221 is the smallest, and the voltage flowing therethrough is the largest. When the tip of the carbon fiber head 221 discharges, more negative ions are generated by ionizing the air.

[0040] In the range hood with air purification device of the utility model, the air inlet 12 and the air purification device 2 are sequentially arranged along the width direction of the range hood body 1. When there is one air purification device 2, the air purification device 2 is arranged on the left or right side of the air inlet 12. In the purification mode, the exhaust fan of the range hood body 1 is turned off, and the air purification device 2 operates and purifies the air in the cooking space. When there are two air purification devices 2, the two air purification devices 2 are respectively arranged on the left and right sides of the air inlet 12. In the purification mode, the exhaust fan of the range hood body 1 is turned off, and the two air purification devices 2 operate and purify the air in the cooking space. In the illustrated embodiment, there are two air purification devices 2, which are symmetrically arranged along the width direction of the range hood body 1, and the air intake port 12 is located between the two air purification devices 2, so that when the movable panel assembly 11 opens the air intake port 12, the air purification device 2 can be exposed to the user side; when the movable panel assembly 11 covers the air intake port 12, the air purification device 2 can be hidden behind the movable panel assembly 11; in both the operating mode and the purification mode, the movable panel assembly 11 can be moved the minimum distance to expose the air intake port 12 and the transmitting end of the air purification device 2 toward the user side.

[0041] See also Figure 1 and Figure 2The utility model of the range hood with air purification device has a front panel 13, and the front panel 13 is provided with an air inlet 12. The movable panel assembly 11 can move relative to the front panel 13 to open or close the air inlet 12 and to expose or hide the transmitting end of the air purification device 2. 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 smoke exhaust fan of the range hood body 1 runs, and at the same time, the movable panel assembly 11 moves relative to the front panel 13 of the range hood body 1 to open the air inlet 12 on the front panel 13. Under the action of the smoke 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 12 on the front panel 13, and then is discharged by the smoke exhaust fan; after the user finishes 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 to keep the air in the cooking space fresh. When the range hood body 1 is in 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 through the air inlet by the exhaust fan, 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. 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 exhaust fan in the range hood body 1 is turned off, the air purification device 2 is turned off, and at the same time, in order to prevent the backflow of oil smoke, the movable panel assembly 11 moves relative to the front panel 13, and the air inlet 12 is shielded by the movable panel assembly 11.

[0042] In the range hood with an air purification device of the utility model, the movable panel assembly 11 is not restricted in the manner in which it moves relative to the front panel 13. The movable panel assembly 11 can rotate relative to the front panel 13 to open the air inlet 12, or it can slide up and down along the front panel 13 to open the air inlet 12. In the illustrated embodiment, the movable panel assembly 11 is located at the front side of the front panel 13, and the movable panel assembly 11 slides up and down along the front panel 13 to open or close the air inlet 12.

[0043] See also Figure 3 and Figure 4In some embodiments of the range hood with an air purification device, an inwardly recessed receiving groove 131 is provided on the front panel 13, and the emission end of the air purification device 2 is placed in the receiving groove 131. When the air purification device 2 uses a negative ion generator, since metal will annihilate the negative ions and affect the purification effect of the negative ions, and the front panel 13 is made of metal, the emission end of the negative ion generator cannot directly contact the front panel 13 when passing through the front panel 13. The receiving groove 131 is provided on the front panel 13. When the negative ion generator passes through the front panel 13, the emission end of the negative ion generator is placed in the receiving groove 131. There is a gap between the receiving groove 131 and the emission end of the negative ion generator, which can reduce the contact amount of the negative ions generated by the emission end of the negative ion generator with the inner wall of the receiving groove 131, thereby reducing the loss of negative ions. In the illustrated embodiment, the depth of the receiving groove 131 is a, and the length of the portion of the emitting end of the air purification device 2 placed in the receiving groove 131 is b, a≥b, so that when the movable panel assembly 11 moves up and down along the front panel 13, the emitting end of the negative ion generator will not interfere with the movable panel assembly 11. The head diameter of the emitting end of the negative ion generator is D1, and the lower edge diameter of the receiving groove 131 is D2, D2≥5mm>D1, 2mm<D1<5mm. The lower edge diameter of the receiving groove 131 is larger than the head diameter of the emitting end of the negative ion generator, and the emitting end of the negative ion generator will not contact the wall surface of the receiving groove 131. The larger the space of the receiving groove 131 surrounding the negative ion generator, the more negative ions are generated, and the less negative ions are eliminated when flowing out of the receiving groove 131, which can improve the purification effect of the negative ions generated by the negative ion generator.

[0044] See also Figure 5 and Figure 6 In other embodiments of the range hood with an air purification device, the air purification device 2 includes a mounting bracket 21 and a negative ion generator 22. The first side of the mounting bracket 21 has a receiving groove 131. The negative ion generator 22 is mounted on the second side of the mounting bracket 21, and its emission end is placed in the receiving groove 131. The mounting bracket 21 is made of plastic, and the emission end of the negative ion generator 22 passes through the mounting bracket 21 and is placed in the receiving groove 131 on the mounting bracket 21, which can prevent the negative ions generated by the emission end of the negative ion generator 22 from contacting the front panel 13, and can reduce the loss of negative ions. Similarly, the head diameter of the emission end of the negative ion generator 22 is D1, and the lower edge diameter of the receiving groove 131 is D2, D2 ≥ 5mm>D1, 2mm<D1<5mm. The diameter of the lower edge of the receiving groove 131 is larger than the head diameter of the emitting end of the negative ion generator 22. The emitting end of the negative ion generator will not contact the wall of the receiving groove 131. The larger the space surrounding the negative ion generator in the receiving groove 131, the less the negative ions generated will be eliminated when flowing out of the receiving groove 131, which can improve the purification effect of the negative ions generated by the negative ion generator.

[0045] See also Figures 7 to 9 In some embodiments of the range hood with an air purification device, the air purification device 2 further includes an air supply component, and an air supply channel connected to the receiving tank 131 is provided on the mounting bracket 21, and the air supply component supplies air to the receiving tank 131 through the air supply channel. When the air supply component is started, the air supply component discharges air to the receiving tank 131 through the air supply channel, and the air on the exhaust side of the air supply component can enter the receiving tank 131 through the air supply channel, and the negative ions in the receiving tank 131 and the negative ions at the emission end of the negative ion generator 22 are blown to the user side, thereby increasing the diffusion distance of the negative ions. In addition, the negative ion generator 22 generates negative ions in a manner that the tip of the carbon fiber head 221 of the negative ion generator 22 discharges and ionizes the air, so that the air on the exhaust side of the air supply component enters the receiving tank 131, so that the part of the negative ion generator 22 located in the receiving tank 131 ionizes the air in the receiving tank 131 and generates negative ions, thereby increasing the amount of negative ions generated. After the negative ions are generated, new air enters the receiving tank and is ionized by the negative ion generator 22, blowing the ionized negative ions toward the user side, so that the negative ions can diffuse in the cooking space and purify the air in the cooking space, keeping the ambient air in the cooking space clean.

[0046] See also Figures 7 to 9 The utility model has an air purifier, and the air supply assembly includes an air duct 23 and a fan 24. The air duct 23 is connected to the second side of the mounting bracket 21. The fan 24 is installed at the air inlet of the air duct 23. The fan 24 sucks air and supplies air to the air duct 23. The air in the air duct enters the receiving tank 131 through the air supply channel. When the air purifier 2 is started, the negative ion generator 22 starts to ionize the air and generate negative ions. The fan 24 of the air supply assembly is started, and the fan 24 sucks air and delivers air to the air supply channel through the air duct 23. The air enters the receiving tank 131 through the air supply channel, and the negative ions generated by the emission end of the negative ion generator 22 are blown out of the receiving tank 131. The air entering the receiving tank 131 can make the part of the negative ion generator 22 located in the receiving tank 131 ionize the air in the receiving tank 131 and generate negative ions, thereby increasing the amount of negative ions generated. After the negative ions are generated, new air enters the receiving tank and is ionized by the negative ion generator 22, blowing the ionized negative ions toward the user side, so that the negative ions can diffuse in the cooking space and purify the air in the cooking space, keeping the ambient air in the cooking space clean.

[0047] See also Fig. 9In the range hood with air purification device of the utility model, at least one vent hole 211 is provided on the top of the receiving groove 131 of the mounting bracket 21, and the vent hole 211 forms an air supply channel. When the fan 24 of the air supply assembly is started, the fan 24 sucks air and delivers air to the vent hole 211 through the air duct 23. The air passes through the vent hole 211 and enters the receiving groove 131, which can make the carbon fiber head 221 partially ionize the air in the receiving groove 131 and generate negative ions, thereby increasing the amount of negative ions generated. After the negative ions are generated, new air enters the receiving groove 131, and while being ionized by the carbon fiber head 221, the negative ions generated by the ionization are blown to move out of the receiving groove, so that the diffusion range of the negative ions in the cooking space is larger, so as to fully purify the air in the cooking space and keep the environment of the cooking space clean.

[0048] In the range hood with air purification device of the utility model, the head diameter of the emission end of the negative ion generator 22 is D1, the lower edge diameter of the receiving groove 131 is D2, D2≥5mm>D1, 2mm<D1<5mm, and the diameter of the vent hole 211 is D3, 1mm≤D3≤D2-D1 / 2. When the negative ion generator 22 is installed in the receiving groove 131, the top of the receiving groove 131 has an installation channel, the carbon fiber head 221 of the negative ion generator 22 passes through the installation channel and is placed in the receiving groove 131, and the emission end extends from the receiving groove 131. At this time, the width of the ring surrounding the installation channel is D2-D1, and the diameter D3 of the vent hole 211 must satisfy D3≤D2-D1 / 2. When D3=D2-D1 / 2, the vent 211 can form an installation channel, and the carbon fiber head 221 directly passes through the vent 211 and enters the receiving groove 131, and the emission end extends out of the receiving groove 131. When D3 of the vent 211 is less than D2-D1 / 2, the vent 211 is a hole that is arranged on a ring around the installation channel and is connected to the receiving groove 131. The larger the aperture of the vent 211, the smaller the wind resistance when the air on the exhaust side of the fan 24 enters the receiving groove 131 through the vent 211, the smaller the speed of the air flow entering the receiving groove 131, and the smaller the distance that the air flow out of the receiving groove 131 blows the negative ions. The smaller the aperture of the vent 211, the closer the air on the exhaust side of the fan 24 enters the receiving groove 131 through the vent 211. The greater the wind resistance when the vent 211 is in the accommodating groove 131, the greater the speed of the air flow entering the accommodating groove 131, and the greater the distance that the air flow out of the accommodating groove 131 blows the negative ions. However, if the aperture of the vent 211 is too small, it will affect the amount of air entering the accommodating groove 131 and generate noise. Therefore, in this embodiment, the aperture D3 of the vent 211 satisfies 1mm≤D3, which can not only ensure the amount of air entering the accommodating groove 131, but also make the air entering the accommodating groove 131 have sufficient wind speed, so that the negative ions can be diffused as far as possible.

[0049] 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 movable panel assembly (11) and an air intake port (12); An air purification device (2) disposed in the range hood body (1); The movable panel assembly (11) is used to open or cover the air inlet (12); when the movable panel assembly (11) opens the air inlet (12), the transmitting end of the air purification device (2) is exposed; and when the movable panel assembly (11) covers the air inlet (12), the transmitting end of the air purification device (2) is hidden.

2. The range hood with an air purification device according to claim 1, characterized in that: The air inlet (12) and the air purification device are arranged in sequence along the width direction of the range hood body (1).

3. The range hood with an air purification device according to claim 1, characterized in that: The range hood body (1) has a front panel (13), the front panel (13) is provided with the air inlet (12), and the movable panel assembly (11) can be moved relative to the front panel (13) to open or close the air inlet (12) and to expose or hide the emission end of the air purification device (2).

4. The range hood with an air purification device according to claim 3, characterized in that: The front panel (13) is provided with an inwardly recessed receiving groove (131), and the transmitting end of the air purification device (2) is placed in the receiving groove (131).

5. 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) and a negative ion generator (22); a first side of the mounting bracket (21) has a receiving groove (131); the negative ion generator (22) is mounted on a second side of the mounting bracket (21), and an emission end thereof is disposed in the receiving groove (131).

6. The range hood with an air purification device according to claim 5, characterized in that: The head diameter of the emission end of the negative ion generator (22) is D1, the lower edge diameter of the containing groove (131) is D2, and D2≥5mm>D1, 2mm<D1<5mm.

7. The range hood with an air purification device according to claim 5, characterized in that: The air purification device (2) further comprises an air supply component, the mounting bracket (21) is provided with an air supply channel connected to the accommodating groove (131), and the air supply component supplies air into the accommodating groove (131) through the air supply channel.

8. The range hood with an air purification device according to claim 7, characterized in that: The air supply assembly comprises an air duct (23) and a fan (24); the air duct (23) is connected to the second side of the mounting bracket (21); the fan (24) is mounted at the air inlet of the air duct (23); the fan (24) sucks air and supplies air to the air duct (23); the air in the air duct enters the containing groove (131) through the air supply channel.

9. The range hood with an air purification device according to claim 7, characterized in that: At least one vent hole (211) is provided at the top of the receiving groove (131) of the mounting bracket (21), and the vent hole (211) forms the air supply channel.

10. The range hood with an air purification device according to claim 9, characterized in that: The head diameter of the emission end of the negative ion generator (22) is D1, the lower edge diameter of the accommodating groove (131) is D2, D2≥5mm>D1, 2mm<D1<5mm, and the diameter of the vent hole (211) is D3, 1mm≤D3≤(D2-D1) / 2.

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