Range hood

Abstract

The utility model discloses a range hood, which comprises a range hood main body, an air suction opening, a movable panel, an exhaust fan, an exhaust fan, an exhaust fan, an exhaust fan, an exhaust fan, an exhaust fan, an exhaust fan, a fan and a fan, and is characterized in that the exhaust fan main body is provided with an air suction panel and a movable panel; the negative ion generating device is arranged in the range hood main body, and a transmitting end of the negative ion generating device can extend to the front side of the air suction panel; the driving end of the driving assembly is connected with and drives the movable panel and the negative ion generating device; compared with the prior art, the range hood has the advantages that when the driving assembly drives the movable panel to move downwards to open the air suction opening, the emitting end of the negative ion generating device can be driven to extend to the front side of the air suction panel at the same time; when the movable panel is driven to move upwards to close the air suction opening, the negative ion generating device can be driven to reset and hidden on the rear side of the movable panel at the same time, and one driving assembly can drive the movable panel and the negative ion generating device at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a range hood. 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, which is used to solve the above technical problems.

[0004] A range hood, comprising:

[0005] The range hood body has an air suction panel and a movable panel. The air suction panel is provided with an air suction port. The movable panel can slide up and down relative to the air suction panel to open or close the air suction port.

[0006] A negative ion generating device is arranged in the main body of the range hood, and its emission end can extend to the front side of the air suction panel;

[0007] The driving component drives the emitting end of the negative ion generating device to extend to the front side of the air suction panel when the movable panel is driven to open the air suction port, and drives the emitting end of the negative ion generating device to reset when the movable panel is driven to close the lower air suction port.

[0008] According to one embodiment of the utility model, when the movable panel closes the air inlet, the negative ion generating device is shielded at its rear side.

[0009] According to one embodiment of the present invention, when the emitting end of the negative ion generating device extends out of the air suction panel, the distance that the emitting end protrudes from the air suction panel is x1, and x1 and the head diameter D1 of the emitting end of the negative ion generating device satisfy the relationship x1≥D1, 2mm≤D1≤5mm.

[0010] According to one embodiment of the utility model, the driving assembly includes a driving member, a guide member and a connecting plate. The guide member is arranged on the rear side of the air suction panel and is connected to the driving member. The connecting plate is connected to the guide member. A guide groove is provided on the air suction panel. A panel bracket is connected to the movable panel. The panel bracket is connected to the connecting plate through the guide groove.

[0011] According to one embodiment of the utility model, a starting part is provided on the connecting plate, which acts on the negative ion generating device when sliding downward relative to the air suction panel and causes the emitting end of the negative ion generating device to extend to the outside of the air suction panel, and leaves the negative ion generating device when sliding upward relative to the air suction panel.

[0012] According to one embodiment of the utility model, the negative ion generating device includes a bracket, a negative ion generator, a slider and a compression spring. The bracket is connected to the inner side of the air suction panel, the slider is slidably connected to the bracket, the compression spring is pressed between the bracket and the slider, the negative ion generator is connected to the slider, and the starting part acts on the slider when it slides downward relative to the air suction panel and squeezes the slider toward the side where the air suction panel is located.

[0013] According to one embodiment of the utility model, an introduction surface is provided between the upper edge of the connecting plate and the starting portion, and the introduction surface is arranged to be tilted backward from top to bottom.

[0014] According to one embodiment of the utility model, when the emitting end of the negative ion generating device extends out of the air suction panel, the distance that the emitting end protrudes from the air suction panel is x1. When the emitting end of the negative ion generating device is retracted behind the air suction panel, the distance between the emitting end and the outer surface of the air suction panel is x2, x2≥0, and the distance that the starting part drives the slider to move in a direction perpendicular to the air suction panel is h, h=x1-x2.

[0015] According to one embodiment of the utility model, when the emitting end of the negative ion generating device extends out of the air suction panel, the distance that the emitting end protrudes from the air suction panel is x1. When the emitting end of the negative ion generating device is retracted behind the air suction panel, the distance between the emitting end and the outer surface of the air suction panel is x2, x2≥0, and the height difference between the plane where the outer side surface of the starting part is located and the plane where the outer side surface of the connecting plate is located is H, H=x1-x2.

[0016] According to one embodiment of the utility model, the distance that the starting part moves downward relative to the air suction panel during the process of starting the negative ion generating device is a1, and the distance from the upper end of the air suction port to the center of the negative ion generating device is b1, and a1≥b1+D1 / 2.

[0017] Compared with the prior art, the range hood of the present invention has the following advantages:

[0018] The range hood of the utility model has a driving component that can simultaneously drive the emitting end of the negative ion generating device to extend to the front side of the air suction panel when the driving panel is driven to move downward to open the air suction port, and can simultaneously drive the negative ion generating device to reset and hide behind the movable panel when the driving panel is driven to move upward to close the air suction port. One driving component can realize the simultaneous driving of the movable panel and the negative ion generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the range hood of the utility model when the air intake port is opened;

[0020] Figure 2 for Figure 1 Sectional view in the AA direction;

[0021] Figure 3 for Figure 2 A magnified view of middle;

[0022] Figure 4 This is a front view of the range hood of the utility model when the air intake port is closed;

[0023] Figure 5 for Figure 4 Cross-sectional view in the BB direction;

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

[0025] Figure 7 It is an exploded view of the negative ion generating device of the range hood of the utility model;

[0026] Figure 8 for Figure 7 Exploded view of the negative ion generator;

[0027] Fig. 9 It is the connection relationship diagram between the active panel and the driving component;

[0028] Fig.10 A diagram showing the connection relationship between the movable panel and the driving component in another direction;

[0029] In the figure: 1. range hood body, 11. air suction panel, 111. air suction port, 112. guide groove, 12. movable panel, 121. panel bracket, 2. negative ion generator, 21. bracket, 22. negative ion generator, 221. carbon fiber head, 222. metal cladding, 223. wire, 23. slider, 24. compression spring, 3. drive assembly, 31. drive member, 311. electric push rod, 312. first connecting rod, 313. second connecting rod, 314. third connecting rod, 315. synchronous shaft, 32. guide member, 33. connecting plate, 331. starting part, 332. introduction surface.

[0030] 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

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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:

[0035] See also Figures 1 to 10The utility model discloses a range hood, which comprises a range hood body 1, a negative ion generating device 2 and a driving assembly 3. The range hood body 1 comprises an air suction panel 11 and a movable panel 12. The air suction panel 11 is provided with an air suction port 111. The movable panel 12 can slide up and down relative to the air suction panel 11 to open or close the air suction port 111. The negative ion generating device 2 is arranged in the range hood body 1, and its emitting end can extend to the front side of the air suction panel 11. The driving assembly 3 drives the emitting end of the negative ion generating device 2 to extend to the front side of the air suction panel 11 when driving the movable panel 12 to open the air suction port 111, and drives the emitting end of the negative ion generating device 2 to reset when driving the movable panel 12 to close the lower air suction port 111. The range hood of the present invention has a range hood main body 1 with an operation mode, a purification mode and a shutdown mode. In the operation mode, when the range hood is started, the driving component 3 drives the movable panel 12 to slide downward along the air suction panel 11, so that the air suction port 111 on the air suction panel 11 is exposed, the air suction port 111 is opened, and the smoke exhaust fan in the range hood main body 1 is operated, and the smoke exhaust fan forms a negative pressure at the air suction port 111, 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 suction port 111, and is then discharged by the smoke exhaust fan; in the process of the driving component 3 driving the movable panel 12 to open the air suction port 111, the driving component 3 simultaneously drives the generating end of the negative ion generating device 2 to extend from the rear side of the air suction panel 11 to the front side of the air suction panel 11, and the range hood is in the operation mode. After the mode is over, if the negative ion generating device 2 needs to generate negative ions, the range hood enters the purification mode. In the purification mode, the smoke exhaust fan in the range hood body 1 is turned off, and the negative ion generating device 2 is running. The negative ion generating device 2 sends negative ions to the front side of the air suction panel 11, and the negative ions purify the air in the cooking space to keep the air in the cooking space clean; in the shutdown mode, the smoke exhaust fan in the range hood body 1 is turned off, and the driving component 3 drives the movable panel 12 to slide upward along the air suction panel 11, so that the air suction port 111 on the air suction panel 11 is closed, and the negative ion generating device 2 is reset at the same time. After the movable panel 12 moves into place, the air suction port 111 is shielded by the movable panel 12, and the negative ion generating device 2 is hidden behind the movable panel 12. The range hood of the utility model, 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 starts running, and at the same time the driving component 3 drives the movable panel 12 to move downward relative to the air suction panel 11, and opens the air suction port 111. 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 suction port 111 on the air suction panel 11, and is then discharged by the smoke exhaust fan. After the user finishes cooking, since the emitting end of the negative ion generating device 2 has extended to the front side of the air suction panel 11, the user can switch the range hood body 1 to the purification mode, the negative ion generating device 2 starts running, 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 negative ion generator 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 negative ion generator 2 purifies the air in the cooking space and purifies the air in the cooking space during the air flow. After the negative ion generator 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, and the negative ion generator 2 is turned off. At the same time, in order to avoid the backflow of oil smoke, the driving component 3 drives the movable panel 12 to move upward relative to the air inlet panel 11, and the air inlet 111 is covered and shielded by the movable panel 12, and the emission end of the negative ion generator 2 is hidden behind the movable panel 12.

[0036] With the range hood of the present invention, after the user completes cooking and turns off the smoke exhaust fan of the range hood, the user can switch the range hood body 1 to the purification mode or the shutdown mode as needed. When the user switches the range hood body 1 to the purification mode, the negative ion generating 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 and avoid oil stains adhering to the walls of the cooking space after long-term cooking operations, so as to keep the air in the cooking space clean and the environment tidy.

[0037] In the range hood of the utility model, the driving component 3 can simultaneously drive the emitting end of the negative ion generating device 2 to extend to the front side of the air suction panel 11 when driving the movable panel 12 to move downward to open the air suction port 111, and can simultaneously drive the negative ion generating device 2 to reset and hide behind the movable panel 12 when driving the movable panel 12 to move upward to close the air suction port 111. One driving component can simultaneously drive the movable panel 12 and the negative ion generating device 2.

[0038] In the range hood of the present invention, the driving component 3 can first drive the movable panel 12 to move downward to open the air intake port 111, and after the range hood completes the extraction of oil smoke, continue to drive the movable panel 12 to move downward, and at the same time drive the negative ion generating device 2, so that the emitting end of the negative ion generating device 2 extends to the front side of the air intake panel 11; after the negative ion generating device 2 completes the purification of the air, the driving component 3 drives the movable panel 12 to move downward relative to the air intake panel 11, so that the emitting end of the negative ion generating device 2 is reset and hidden to the rear side of the movable panel 12, and the movable panel 12 closes the air intake port 111 during the subsequent movement process.

[0039] See also Figures 4 to 6In the range hood of the utility model, the movable panel 12 blocks the negative ion generating device 2 at its rear side when closing the air inlet 111. When the range hood is turned off, the movable panel 12 covers the part of the air inlet panel 11 provided with the air inlet 111 and the part corresponding to the negative ion generating device 2. In this way, after the range hood is turned off, the negative ion generating device 2 is hidden at the rear side of the movable panel 12, and no dust will adhere to the emission end of the negative ion generating device 2, which will not affect the effect of the negative ion generating device 2 in generating negative ions.

[0040] In the range hood of the utility model, when the emitting end of the negative ion generating device 2 extends out of the air suction panel 11, the distance that the emitting end protrudes from the air suction panel 11 is x1, and x1 and the head diameter D1 of the emitting end of the negative ion generating device 2 satisfy the relationship x1≥D1, 2mm≤D1≤5mm. x1≥D1 can ensure that the head of the emitting end of the negative ion generating device 2 is completely extended out of the air suction panel 11, and the negative ions generated by the negative ion generating device 2 are less in contact with the air suction panel 11, which can reduce the annihilation of the negative ions and improve the utilization rate of the negative ions.

[0041] See also Fig. 9 and Fig.10 In the range hood of the present invention, the driving assembly 3 includes a driving member 31, a guide member 32 and a connecting plate 33. The guide member 32 is arranged on the rear side of the air suction panel 11 and is connected to the driving member 31. The connecting plate 33 is connected to the guide member 32. The air suction panel 11 is provided with a guide groove 112. The movable panel 12 is connected to a panel bracket 121. The panel bracket 121 passes through the guide groove 112 and is connected to the connecting plate 33. The guide member 32 includes a fixed rail and a movable rail, the fixed rail is connected to the rear side of the air suction panel 11, the movable rail is slidably connected to the fixed rail, the connecting plate 33 is connected to the movable rail, and the panel bracket 121 is connected to the movable rail. When the driving member 31 is started, the driving member 31 drives the movable rail to slide along the fixed rail, and then the sliding rail drives the connecting plate 33 to slide up and down relative to the air suction panel 11; the air suction panel 11 is provided with a guide groove 112, and the panel bracket 121 is connected to the connecting plate 33 through the guide groove 112. When the connecting plate 33 slides up and down relative to the air suction panel 11, the panel bracket 121 drives the movable panel 12 to slide the connecting plate 33 relative to the air suction panel 11.

[0042] See also Fig. 9 and Fig.10The range hood of the present invention, in order to keep the movement of the movable panel 12 balanced, the driving assembly 3 has two guide members 32, each of which is connected to a connecting plate 33, and the movable rails of the two guide members 32 are connected to connecting plates 33, the driving member 31 includes an electric push rod 311, a first connecting rod 312, a second connecting rod 313, a third connecting rod 314 and a synchronization shaft 315, the synchronization shaft 314 is rotatably connected to the rear side of the air suction panel 11, and the two sides of the synchronization shaft 315 are respectively connected to one end of the first connecting rod 312, the other end of the first connecting rod 312 is connected to one end of the second wheel connecting rod 313, and the other end of the second connecting rod 313 is connected to the connecting plate 33, the third connecting rod 314 is connected to one end of the first connecting rod 312 and the second connecting rod 313, and the other end is connected to the driving end of the electric push rod 311. When the electric push rod 313 is started, the electric push rod 313 pushes the third connecting rod 314 to rotate, and the third connecting rod 314 drives the first connecting rod 312 and the second connecting rod 313 to rotate at the same time, and the second connecting rod 313 drives the connecting plate 33 on the same side to slide along the movable rail, and the first connecting rod 312 drives the synchronous shaft 315 to rotate, and the synchronous shaft 315 rotates and causes the other first connecting rod 312 to rotate, and the other first connecting rod 312 rotates and drives the second connecting rod 313 on the same side to rotate, and the second connecting rod 313 on the same side drives the connecting plate 33 connected thereto to slide along the movable rail, and the connecting plate 33 drives the movable panel 12 to slide relative to the air suction panel 11 through the panel bracket 121.

[0043] See also Figure 1 and Figure 6 In the smoke exhaust fan of the utility model, a starting part 331 is provided on the connecting plate 33. When the starting part 331 slides downward relative to the air suction panel 11, it acts on the negative ion generating device 2 and makes the emission end of the negative ion generating device 2 extend to the outside of the air suction panel 11, and leaves the negative ion generating device 2 when it slides upward relative to the air suction panel 11. When the driving member 31 drives the movable rail to slide downward relative to the air suction panel 11 along the fixed rail, the connecting plate 33 slides downward relative to the air suction panel 11 along the movable rail, and the starting part 331 slides downward and acts on the negative ion generating device 2. The starting part 331 presses the negative ion generating device 2 toward the outside of the air suction panel 11, and the emission end of the negative ion generating device 2 extends to the front side of the air suction panel; when the driving member 31 drives the connecting plate 33 to move upward relative to the air suction panel 11 through the movable rail, the starting part 331 slides upward and leaves the negative ion generating device 2, and the negative ion generating device 2 is reset.

[0044] See also Figure 7In the range hood of the present invention, the negative ion generating device 2 includes a bracket 21, a negative ion generator 22, a slider 23 and a compression spring 24. The bracket 21 is connected to the inner side of the air suction panel 11, the slider 23 is slidably connected to the bracket 21, the compression spring 24 is pressed between the bracket 21 and the slider 23, the negative ion generator 22 is connected to the slider 23, and the starting part 331 acts on the slider 23 when sliding downward relative to the air suction panel 11 and squeezes the slider 23 toward the side where the air suction panel 11 is located. When the movable panel 12 closes the air inlet, the starting part 331 does not contact the negative ion generating device 2. At this time, the slider 23 is farthest from the front side of the air inlet panel 11, and the negative ion generator 22 is hidden behind the air inlet panel 11. The compression spring 24 is in a naturally extended state. When the movable panel 12 moves downward relative to the air inlet panel 11, the starting part 331 approaches the slider 23. When the movable panel 12 moves downward a certain distance relative to the air inlet panel 11, the starting part 331 acts on the slider 23 and squeezes the slider 23 toward the side where the air inlet panel 11 is located. The slider 23 moves toward the air inlet surface. The side where the plate 11 is located moves and drives the negative ion generator 22 to extend to the front side of the air suction panel 11; in the process of the slider 23 approaching the air suction panel 11, the slider 23 squeezes the compression spring 24, and the compression spring 24 is compressed; when the movable panel 12 moves upward relative to the air suction panel 11, the starting part 331 moves upward, and after moving to a certain distance, the starting part 331 leaves the slider 23, the compression spring 24 resets and drives the slider 23 to move in the direction of the far air suction panel 11, and the emitting end of the negative ion generator 22 moves with the slider 23 and retracts backward relative to the air suction panel 11 and resets.

[0045] See also Figure 3 and Figure 6 In the range hood of the present invention, there is an introduction surface 332 between the upper edge of the connecting plate 33 and the starting part 331, and the introduction surface 332 is arranged to be tilted backward from top to bottom. The distance from the starting part 331 to the air suction panel 11 is smaller than the distance from other parts of the connecting plate 33 to the air suction panel 11, so that after the starting part 331 contacts the slider 23, the starting part 331 will press the slider 23 toward the side where the movable panel 12 is located, so that the negative ion generator 22 extends to the outside of the movable panel 12, and the starting part 331 and other parts of the connecting plate 33 are not in the same plane, and other parts of the connecting plate 33 are recessed backward relative to the starting part 331, so as to form an avoidance position for avoiding the negative ion generating device 2. The starting portion 331 and other parts of the connecting plate 33 are not in the same plane, and there is an introduction surface 332 between the upper edge of the connecting plate 33 and the starting portion 331, so that the starting portion 331 can act on the slider 23 smoothly, and in the process of the introduction surface 332 contacting the slider 23, the introduction surface 332 gradually squeezes the slider 23 toward the air suction panel 11, until the starting portion 331 acts on the slider 23, and the negative ion generator 22 extends into place.

[0046] In the range hood of the present invention, when the emitting end of the negative ion generating device 2 extends out of the air suction panel 11, the distance that the emitting end protrudes from the air suction panel 11 is x1, and when the emitting end of the negative ion generating device 2 is retracted behind the air suction panel 11, the distance between the emitting end and the outer surface of the air suction panel 11 is x2, x2≥0, and the starting part 331 drives the slider 23 to move in a direction perpendicular to the air suction panel 11 The distance is h, h=x1-x2. Because the movable panel 12 can slide up and down relative to the air suction panel 11, there is a gap between the movable panel 12 and the air suction panel 11 bracket. When the emitting end of the negative ion generating device 2 is retracted behind the air suction panel 11, the distance between the emitting end and the outer surface of the air suction panel 11 is x2, x2≥0, and X2 is smaller than the gap between the movable panel 12 and the air suction panel 11, that is, the emitting end of the negative ion generating device 2 will not interfere with the movable panel 12; and when the negative ion generator 22 needs to extend to the front side of the air suction panel 11 by a distance of x1, the emitting end of the negative ion generator 22 needs to first move a distance of x2 to make the emitting end flush with the outer surface of the air suction panel 11, and then extend outward by x1, so that the emitting end protrudes from the air suction panel 11 by a distance of x1, and the starting part 331 drives the slider 23 to move a distance h in a direction perpendicular to the air suction panel 11, h=x1-x2.

[0047] In the range hood of the utility model, when the emitting end of the negative ion generating device 2 extends out of the air suction panel 11, the distance that the emitting end protrudes from the air suction panel 11 is x1, and when the emitting end of the negative ion generating device 2 is retracted behind the air suction panel 11, the distance between the emitting end and the outer surface of the air suction panel 11 is x2, x2≥0, and the height difference between the plane where the outer side surface of the starter 331 is located and the plane where the outer side surface of the connecting plate 33 is located is H, H=x1-x2. The height difference between the plane where the outer side surface of the starter 331 is located and the plane where the outer side surface of the other parts of the connecting plate 33 is located is the distance that the negative ion generator 22 needs to move to extend out of the air suction panel 11.

[0048] In the range hood of the present invention, the distance a1 moves downward relative to the air suction panel 11 when the starter 331 starts the negative ion generator 2, and the distance b1 from the upper end of the air suction port 111 to the center of the negative ion generator 2, a1 ≥ b1 + D1 / 2. After the air suction port 111 is opened, the emission ends of the negative ion generator 22 all extend from the front side of the movable panel 12 to their proper positions and leave the shielding of the movable panel 12.

[0049] See also Figure 8In the range hood of the utility model, the negative ion generating device 2 includes a negative ion generator 22, which includes a carbon fiber head 221 and a metal cladding 222. The metal cladding 222 wraps one end of the carbon fiber head 221. 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.

[0050] The negative ion generating device 2 of the smoke machine of the utility model is at least wrapped with PDG organic gel at the tip of the carbon fiber head 221. 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, its own volume can be swollen 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 is enriched at the tip of the carbon fiber head 221, and then generates negative oxygen ions under voltage.

[0051] The resistance of the metal cladding 222 of the negative ion generating device 2 of the smoke machine of the utility model is R1, the resistance of the metal cladding 222 connecting one end of the wire 223 to the tip of the carbon fiber head 221 is R2, the resistance of the wire 223 is R3, and the resistance 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 through it is the largest. When the tip of the carbon fiber head 221 discharges, more negative ions are generated by ionizing the air.

[0052] In the range hood of the utility model, the air inlet 111 and the negative ion generating device 2 are sequentially arranged along the width direction of the range hood body 1. When there is one negative ion generating device 2, the negative ion generating device 2 is arranged on the left or right side of the air inlet 111. In the purification mode, the exhaust fan of the range hood body 1 is turned off, and the negative ion generating device 2 operates and purifies the air in the cooking space. When there are two negative ion generating devices 2, the two negative ion generating devices 2 are respectively arranged on the left and right sides of the air inlet 111. In the purification mode, the exhaust fan of the range hood body 1 is turned off, and the two negative ion generating devices 2 operate and purify the air in the cooking space. In the illustrated embodiment, there are two negative ion generating devices 2, which are symmetrically arranged along the width direction of the range hood body 1, and the air intake port 111 is located between the two negative ion generating devices 2, so that when the movable panel 12 opens the air intake port 111, the negative ion generating device 2 can be exposed to the user side; when the movable panel 12 covers the air intake port 111, the negative ion generating device 2 can be hidden behind the movable panel 12; in both the operating mode and the purification mode, the movable panel 12 can be moved the minimum distance to expose the air intake port 111 and the emitting end of the negative ion generating device 2 toward the user side.

[0053] 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, characterized in that: include: A range hood body (1) comprising an air suction panel (11) and a movable panel (12), wherein the air suction panel (11) is provided with an air suction port (111), and the movable panel (12) can slide up and down relative to the air suction panel (11) to open or close the air suction port (111); A negative ion generating device (2) is arranged in the range hood body (1), and its emission end can extend to the front side of the air suction panel (11); A driving component (3) which simultaneously drives the emission end of the negative ion generating device (2) to extend to the front side of the air suction panel (11) when driving the movable panel (12) to open the air suction port (111), and simultaneously drives the emission end of the negative ion generating device (2) to reset when driving the movable panel (12) to close the lower air suction port (111).

2. The range hood according to claim 1, characterized in that: When the movable panel (12) closes the air inlet (111), the negative ion generating device (2) is shielded at its rear side.

3. The range hood according to claim 1, characterized in that: When the emitting end of the negative ion generating device (2) extends out of the air suction panel (11), the distance that the emitting end protrudes from the air suction panel (11) is x1, and x1 and the head diameter D1 of the emitting end of the negative ion generating device (2) satisfy the relationship x1≥D1, 2mm≤D1≤5mm.

4. The range hood according to claim 1, characterized in that: The driving assembly (3) comprises a driving member (31), a guiding member (32) and a connecting plate (33); the guiding member (32) is arranged at the rear side of the air suction panel (11) and is connected to the driving member (31); the connecting plate (33) is connected to the guiding member (32); a guiding groove (112) is provided on the air suction panel (11); a panel bracket (121) is connected to the movable panel (12); and the panel bracket (121) passes through the guiding groove (112) and is connected to the connecting plate (33).

5. The range hood according to claim 4, characterized in that: The connecting plate (33) is provided with a starting portion (331), and the starting portion (331) acts on the negative ion generating device (2) when sliding downward relative to the air suction panel (11) to cause the emission end of the negative ion generating device (2) to extend to the outside of the air suction panel (11), and leaves the negative ion generating device (2) when sliding upward relative to the air suction panel (11).

6. The range hood according to claim 5, characterized in that: The negative ion generating device (2) comprises a bracket (21), a negative ion generator (22), a slider (23) and a compression spring (24); the bracket (21) is connected to the inner side of the air suction panel (11); the slider (23) is slidably connected to the bracket (21); the compression spring (24) is pressed between the bracket (21) and the slider (23); the negative ion generator (22) is connected to the slider (23); and the starting portion (331) acts on the slider (23) when sliding downward relative to the air suction panel (11) and presses the slider (23) toward the side where the air suction panel (11) is located.

7. The range hood according to claim 5, characterized in that: An introduction surface (332) is provided between the upper edge of the connecting plate (33) and the starting portion (331), and the introduction surface (332) is arranged to be inclined backward from top to bottom.

8. The range hood according to claim 6, characterized in that: When the emitting end of the negative ion generating device (2) extends out of the air suction panel (11), the distance that the emitting end protrudes from the air suction panel (11) is x1; when the emitting end of the negative ion generating device (2) is retracted into the air suction panel (11), the distance between the emitting end and the outer surface of the air suction panel (11) is x2, x2≥0; the distance that the starting unit (331) drives the slider (23) to move in a direction perpendicular to the air suction panel (11) is h, h=x1-x2.

9. The range hood according to claim 7, characterized in that: When the emitting end of the negative ion generating device (2) extends out of the air suction panel (11), the distance that the emitting end protrudes from the air suction panel (11) is x1; when the emitting end of the negative ion generating device (2) is retracted into the air suction panel (11), the distance between the emitting end and the outer surface of the air suction panel (11) is x2, x2≥0, and the height difference between the plane where the outer side surface of the starting part (331) is located and the plane where the outer side surface of the connecting plate (33) is located is H, H=x1-x2.

10. The range hood according to claim 5, characterized in that: The distance that the starting unit (331) moves downward relative to the air suction panel (11) during the process of starting the negative ion generating device (2) is a1, and the distance from the upper end of the air suction port (111) to the center of the negative ion generating device (2) is b1, and a1≥b1+D1 / 2.

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