Range hood

Abstract

The application discloses an oil fume extractor, and relates to the technical field of kitchen appliances, wherein the oil fume extractor comprises a smoke collecting hood and a lower opening and closing structure; the smoke collecting hood is provided with a smoke collecting cavity and a lower smoke inlet communicating with the smoke collecting cavity; the lower smoke inlet is provided with a smoke inlet groove recessed into the smoke collecting cavity; the smoke inlet groove is provided with a smoke passing opening communicating with the smoke collecting cavity; and the lower opening and closing structure is arranged at the smoke passing opening and used for opening or closing the lower smoke inlet. The technical scheme can improve the use experience of users and the overall appearance of the oil fume extractor.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. A range hood uses a fan installed inside to draw in and exhaust cooking fumes. When the impeller rotates, a negative pressure is generated at the center of the fan, drawing the fumes from the fume hood into the fan, where they are then accelerated and expelled outdoors.

[0003] Smoke hoods typically have a smoke inlet and an opening / closing mechanism to control the opening and closing of the smoke inlet. However, in the existing technology, the location of the opening / closing mechanism is often not reasonable enough, which makes it easy for accidental oil dripping to occur at the opening / closing mechanism, affecting the user experience and detrimental to the overall appearance of the range hood. Summary of the Invention

[0004] The main objective of this invention is to propose a range hood that aims to improve the user experience and the overall appearance of the range hood.

[0005] To achieve the above objectives, the present invention provides a range hood comprising:

[0006] A smoke hood includes a smoke collection chamber and a lower smoke inlet communicating with the smoke collection chamber. The lower smoke inlet has a smoke inlet groove recessed into the smoke collection chamber, and the smoke inlet groove has a smoke outlet communicating with the smoke collection chamber.

[0007] A lower opening and closing structure is provided at the smoke inlet to open or close the lower smoke inlet.

[0008] In one embodiment, the smoke inlet is located on the upper wall of the smoke inlet groove, and the lower opening and closing structure is located on the upper side of the smoke inlet.

[0009] In one embodiment, both the lower opening and closing structure and the smoke outlet are located close to the rear sidewall of the smoke collection hood; and / or, the side of the upper groove wall closest to the rear sidewall of the smoke collection hood extends downward toward the smoke collection chamber.

[0010] In one embodiment, an oil cup is provided below the smoke collection hood, the lower groove wall of the smoke inlet groove is inclined, and the upper side of the lower groove wall is close to the rear side wall of the smoke collection hood, while the lower side of the lower groove wall extends into the opening of the oil cup.

[0011] In one embodiment, a bent flange is provided on the upper side of the lower tank wall, and the side of the bent flange away from the lower tank wall is connected to the rear side wall. The bent flange and the rear side wall together form an oil guide groove, and the oil guide groove is connected to the oil cup.

[0012] In one embodiment, a condenser plate is provided on the side of the lower groove wall facing the smoke inlet groove.

[0013] In one embodiment, the smoke inlet includes two sub-smoke inlets arranged in a left-right direction, and the lower opening and closing structure includes two louvers, one of which is installed in one of the sub-smoke inlets. Each louver includes a driving structure and multiple blades. The driving structure can drive the multiple blades to swing to open or close the lower smoke inlet.

[0014] In one embodiment, the drive structure is driven to the upper side of the blade, and the drive structure can drive the plurality of blades to rotate downward with their upper side as the axis to open the lower smoke inlet.

[0015] In one embodiment, when the lower smoke inlet is open, the upper sides of the blades of the two louvers are close to each other, and the lower sides of the blades of the two louvers are far apart.

[0016] In one embodiment, the louver further includes a connecting rod with multiple mounting positions. One of the blades is mounted at one of the mounting positions. The connecting rod moves in the left-right direction of the range hood to drive the multiple blades to swing.

[0017] In one embodiment, the drive structure includes a drive motor, a first gear, and a second gear. The first gear is rotatably connected to the output end of the drive motor, and the second gear is drive-connected to one of the plurality of blades. The first gear and the second gear mesh and drive each other.

[0018] The drive motor drives the first gear to rotate, thereby driving the second gear to swing one of the multiple blades, which in turn causes the connecting rod to move in the left-right direction of the range hood.

[0019] In one embodiment, a partition rib is provided in the smoke passage to separate two sub-smoke passages, and at least a portion of the two drive structures is disposed in the partition rib.

[0020] The technical solution of this invention involves providing a smoke collection chamber within the smoke collection hood, and a lower smoke inlet communicating with the smoke collection chamber. The lower smoke inlet has a smoke inlet groove recessed into the smoke collection chamber, and the smoke inlet groove has a smoke passage communicating with the smoke collection chamber. Therefore, the path for external fumes to enter the smoke collection hood is as follows: first, they enter the smoke inlet groove through the lower smoke inlet, then flow from the smoke inlet groove to the smoke passage, and finally flow into the smoke collection chamber. A lower opening and closing structure is provided at the smoke passage to open or close the lower smoke inlet. When external fumes pass through the lower opening structure, oil residue may remain on it and potentially drip. However, because the lower opening structure in this design is located at the smoke inlet, inside the smoke collection hood, oil droplets at this location are more likely to drip into the oil cup, reducing the possibility of accidental dripping and improving the user experience. Furthermore, this design prevents the lower opening structure from being directly visible, enhancing the overall aesthetics. On the other hand, lower opening structures often have complex structures such as hinges, creating numerous hard-to-clean areas. If directly exposed at the lower smoke inlet, users would need to repeatedly wipe the lower opening structure after each use to maintain cleanliness, significantly increasing cleaning difficulty. By concealing it within the smoke collection hood, users only need to clean the lower opening structure periodically, reducing cleaning complexity and improving the user experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a structure of an embodiment of the range hood provided by the present invention;

[0023] Figure 2 for Figure 1 Internal structure diagram of a center-draft range hood;

[0024] Figure 3 for Figure 1 A schematic diagram of the smoke flow direction of a center-suction range hood in its first operating state;

[0025] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0026] Figure 5 for Figure 1 A schematic diagram of the smoke flow direction of a center-suction range hood in its second usage state;

[0027] Figure 6 for Figure 1A schematic diagram of the smoke distribution of a center-suction range hood in its third usage state;

[0028] Figure 7 for Figure 1 A schematic diagram of the smoke distribution of a center-suction range hood in its fourth operating state;

[0029] Figure 8 for Figure 1 A schematic diagram of the smoke distribution of a center-suction range hood in its fifth operating state;

[0030] Figure 9 for Figure 1 A schematic diagram of the downward opening and closing structure in a center-suction range hood;

[0031] Figure 10 for Figure 1 A schematic diagram of the assembly structure of the blades, connecting rods, and drive structure in a center-draft range hood;

[0032] Figure 11 for Figure 10 A magnified view of a section at point B in the middle;

[0033] Figure 12 for Figure 1 A cross-sectional view of the bottom opening mechanism of a center-suction range hood when it is open.

[0034] Explanation of icon numbers:

[0035] 1. Smoke hood; 101. Smoke collection chamber; 102. Lower smoke inlet; 103. Smoke outlet; 1031. Sub-smoke outlet; 104. Upper opening and closing structure; 105. Horizontal section; 106. Vertical section;

[0036] 11. Smoke inlet groove; 111. Upper groove wall; 112. Lower groove wall; 113. Bending and flanged edge; 114. Condensation plate; 115. Oil guide groove;

[0037] 12. Lower opening and closing structure; 121. Louver; 122. Blade; 123. Locking protrusion; 124. Drive structure; 125. Connecting rod; 126. Mounting position; 127. Drive motor; 128. First gear; 129. Second gear; 120. Separating rib;

[0038] 13. Main body; 131. Front panel; 132. Rear side wall; 133. Top wall; 134. Left side wall; 135. Right side wall;

[0039] 14. Mounting frame; 141. Mounting slot; 15. Oil cup;

[0040] 2. Fan cover; 21. Fan.

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] This invention proposes a range hood.

[0046] Please see Figures 1 to 5 In one embodiment of the present invention, the range hood includes:

[0047] The smoke hood 1 has a smoke collection chamber 101 and a lower smoke inlet 102 communicating with the smoke collection chamber 101. The lower smoke inlet 102 is provided with a smoke inlet groove 11 recessed into the smoke collection chamber 101, and the smoke inlet groove 11 is provided with a smoke outlet 103 communicating with the smoke collection chamber 101; and

[0048] The lower opening and closing structure 12 is provided at the smoke inlet 103 and is used to open or close the lower smoke inlet 102.

[0049] Specifically, the smoke hood 1 includes a main hood body 13 and a front panel 131 that are spliced ​​together. The main hood body 13 has a rear side wall 132 located at the rear of the smoke hood 1, a top wall 133 located at the top of the smoke hood 1, and a left side wall 134 and a right side wall 135 located on the left and right sides of the smoke hood 1. The front panel 131 is located at the front of the smoke hood 1 and is spliced ​​to the left side wall 134 and the right side wall 135. The lower smoke inlet 102 is opened on the front panel 131. The smoke collection chamber 101 is formed in the space enclosed by the main hood body 13 and the front panel 131. The smoke inlet groove 11 is located between the lower smoke inlet 102 and the smoke collection chamber 101 and can connect the lower smoke inlet 102 and the smoke collection chamber 101. The smoke inlet groove 11 can be considered as a recess formed by the front panel 131 at the lower smoke inlet 102 into the smoke collection cavity 101, and the smoke inlet groove 11 is provided with a smoke outlet 103 communicating with the smoke collection cavity 101. Therefore, the path for external oil fumes to enter the smoke collection hood 1 is (see...) Figure 3 and Figure 4 ): First, the smoke enters the smoke inlet groove 11 through the lower smoke inlet 102, then flows from the smoke inlet groove 11 to the smoke outlet 103, and then flows into the smoke collection chamber 101.

[0050] The lower opening and closing structure 12 is located at the smoke inlet 103, thereby controlling the opening and closing of the smoke inlet 103, and thus controlling the connection between the smoke inlet groove 11 and the smoke collection chamber 101, that is, controlling the opening and closing of the lower smoke inlet 102. In addition, the lower opening and closing structure 12 can also control the opening degree of the lower smoke inlet 102, thereby controlling the amount of smoke intake and improving the adaptability of the range hood to different usage scenarios.

[0051] When external fumes pass through the lower opening structure 12, oil residue may remain on it and may accumulate as oil droplets. However, since the lower opening structure 12 in this design is located at the smoke inlet 103, i.e., inside the smoke hood 1, the oil droplets at the lower opening structure 12 can easily drip into the oil cup 15, reducing the possibility of accidental dripping. Compared to the prior art, where the lower opening structure 12 is directly located at the lower smoke inlet 102, and the smoke hood 1 is often wider at the top and narrower at the bottom, and the oil cup 15 is usually located at the bottom of the smoke hood 1, the oil droplets at the lower opening structure 12 are less likely to flow into the oil cup 15, increasing the risk of accidental dripping (especially when the lower opening structure 12 is configured as an outward-opening door). Therefore, in this solution, the lower opening and closing structure 12 is hidden inside the smoke collection hood 1, thereby reducing the possibility of accidental oil dripping and improving the user experience. In addition, this solution also makes it difficult for users to see the lower opening and closing structure 12 directly, which helps to improve the overall appearance. On the other hand, the lower opening and closing structure 12 often has a complex structure with a hinge and other components, resulting in many hard-to-clean areas. If it is directly exposed to the lower smoke inlet 102, users would need to repeatedly wipe the lower opening and closing structure 12 after each use to maintain cleanliness, which would undoubtedly increase the cleaning difficulty for users. However, by hiding it inside the smoke collection hood 1, users only need to clean the lower opening and closing structure 12 periodically, which helps to reduce the cleaning difficulty for users and improve the user experience.

[0052] It should be noted that the lower opening and closing structure 12 being located at the smoke inlet 103 does not necessarily mean that the lower opening and closing structure 12 is located inside the smoke inlet groove 11. It can be located on the side of the smoke inlet 103 facing the smoke inlet groove 11, in which case the lower opening and closing structure 12 is located inside the smoke inlet groove 11; it can also be located on the side of the smoke inlet 103 facing the smoke collection chamber 101, in which case the lower opening and closing structure 12 is located inside the smoke collection chamber 101; or the lower opening and closing structure 12 can be directly engaged with the inner periphery of the smoke inlet 103, in which case the lower opening and closing structure 12 is located at the connection between the smoke inlet groove 11 and the smoke collection chamber 101.

[0053] In some embodiments, the front panel 131 is further provided with an upper smoke inlet and an upper opening and closing structure 104 for controlling the opening and closing of the upper smoke inlet, thereby helping the range hood to absorb smoke from a wider range and improving the adaptability of the smoke collection hood 1 to various usage scenarios. For example, when the smoke collection hood 1 is used on a dual gas stove, if one side is a wok and the other side is a steamer, the user can open the upper smoke inlet and the lower smoke inlet 102 at the same time. At this time, the upper smoke inlet is mainly used to draw in the high smoke generated by the steamer, and the lower smoke inlet 102 is used to draw in the low smoke generated by the wok (see...). Figure 5 Of course, users can also selectively open only the top smoke inlet or the bottom smoke inlet 102 (see...). Figure 4 , Figure 4(This refers to the direction of oil fume flow when only the lower smoke inlet 102 of the range hood is open). However, the lower smoke inlet 102 in this design does not necessarily mean that the range hood has an upper smoke inlet; it can also be used in a single smoke inlet design. Regardless of whether the lower smoke inlet 102 is used in a dual smoke inlet design or a single smoke inlet design, the lower smoke inlet 102 is usually located near the lower side of the front panel 131, that is, the front panel 131 is divided into an upper half and a lower half along the vertical direction, and the lower smoke inlet 102 is located in the lower half, or at least partially located in the lower half.

[0054] In this embodiment, the overall shape of the fume hood 1 can be configured as a "7" shape. That is, the fume hood 1 includes a horizontal section 105 at the top and a vertical section 106 below the horizontal section 105. A fan cover 2 is provided at the top of the horizontal section 105. The fan cover 2 is connected to the fume collection chamber 101, and the fan 21 is located inside the fan cover 2. When the range hood is working, the fan 21 rotates at high speed inside the fan cover 2, creating a certain air pressure difference between the inside and outside of the range hood chamber. This allows the smoke from outside the range hood to flow through the fume collection chamber 101 to the fan cover 2, thereby expelling the fumes generated during cooking. The lower smoke inlet 102 is located in the vertical section 106, and the overall thickness of the vertical section 106 is relatively thin. Compared with traditional top-mounted range hoods, the "7" shape design usually makes it less likely to bump one's head (more user-friendly for taller users), and solves the problem that some side-mounted range hoods may not be able to accommodate large pots, providing more freedom of space for cooking.

[0055] Further, see Figure 4 The smoke inlet 103 is located on the upper groove wall 111 of the smoke inlet groove 11, and the lower opening and closing structure 12 is located on the upper side of the smoke inlet 103, that is, the lower opening and closing structure 12 is located on the top side of the smoke inlet groove 11. This makes it virtually impossible for the user to see the lower opening and closing structure 12 even when looking through the lower smoke inlet 102, thus further concealing the lower opening and closing structure 12, further reducing the possibility of accidental oil dripping, and ensuring the aesthetic appearance of the range hood. The upper groove wall 111 can be formed by partially bending the front panel 131, which facilitates the processing of the smoke inlet groove 11 and also reduces the possibility of accidental oil fume leakage.

[0056] To further reduce the possibility of accidental oil dripping, in one embodiment, both the lower opening structure 12 and the smoke outlet 103 are located close to the rear sidewall 132 of the smoke hood 1, and the side of the upper groove wall 111 closest to the rear sidewall 132 of the smoke hood 1 extends downwards into the smoke collection chamber 101. In this embodiment, one side of the lower opening structure 12 and the smoke outlet 103 is attached to the rear sidewall 132 or has a small gap with it. This facilitates the flow of oil droplets from the lower opening structure 12 and the smoke outlet 103 along the rear sidewall 132 to the oil cup 15. Furthermore, it creates a certain gap between the lower opening structure 12 and the front panel 131, thereby reducing the possibility that the lower opening structure 12 might be too close to the front panel 131, causing part of the lower opening structure 12 to be suspended directly relative to the oil cup 15, resulting in direct oil dripping. Furthermore, the side of the upper groove wall 111 near the rear side wall 132 of the smoke hood 1 extends downwards towards the smoke collection chamber 101. This means the width of the smoke passage 103 is smaller than the width of the opening controlled by the lower opening and closing structure 12. The side of the smoke passage 103 near the rear side wall 132 is roughly flush with the opening controlled by the lower opening and closing structure 12, while the side away from the rear side wall 132 partially blocks the opening controlled by the lower opening and closing structure 12. This increases the installation area between the upper groove wall 111 and the opening and closing structure, ensuring installation stability. It also helps guide oil droplets dripping from the lower opening and closing structure 12, causing them to flow closer to the rear side wall 132, further reducing the possibility of accidental dripping. Furthermore, the portion of the upper groove wall 111 that blocks the lower opening and closing structure 12 extends obliquely downwards, further guiding the oil droplets and reducing the possibility of the upper groove wall 111 affecting the normal opening of the lower opening and closing structure 12.

[0057] Reference Figures 1 to 4 In an embodiment of the present invention, an oil cup 15 is provided below the smoke collection hood 1. The lower groove wall 112 of the smoke inlet groove 11 is inclined, and the upper side of the lower groove wall 112 is close to the rear side wall 132 of the smoke collection hood 1. The lower side of the lower groove wall 112 extends into the opening of the oil cup 15. Specifically, the lower groove wall 112 extends obliquely downward from near the rear side wall 132 of the smoke collection hood 1 to the opening of the oil cup 15, thereby further guiding the oil droplets dripping from the lower opening and closing structure 12 and / or the smoke collection chamber 101, ensuring that they flow smoothly into the oil cup 15. Therefore, the lateral cross-section of the smoke inlet groove 11 is approximately triangular, with the lower smoke inlet 102 located on its front side, the smoke outlet 103 located on its top side, and the lower groove wall 112 located on its lower side, thus both concealing the lower opening and closing structure 12 and facilitating its disassembly.

[0058] Furthermore, a condenser plate 114 is provided on the side of the lower trough wall 112 facing the smoke inlet groove 11. This condenser plate 114 can initially cool and condense the oil fumes. When the high-temperature oil fumes encounter the relatively cool condenser plate 114, the oil mist particles in the oil fumes will liquefy due to cooling and condense on the plate surface. These condensed oil droplets will flow down the plate surface into the oil cup 15, thereby achieving the separation of grease and flue gas and reducing the burden on the fan system. One side of the lower trough wall 112 can be connected to the lower side wall of the smoke hood 1, and the other side can be connected to the rear side wall 132 of the smoke hood 1, while the condenser plate 114 is fixed above the lower trough wall 112. The lower trough wall 112 can be welded to the smoke hood 1. In addition, the condenser plate 114 can be made of glass or metal, and the condenser plate 114 can also be provided on the front panel 131.

[0059] Further, see Figure 4 The upper side of the lower tank wall 112 is provided with a bent flange 113. The side of the bent flange 113 away from the lower tank wall 112 is connected to the rear side wall 132, and the bent flange 113 and the rear side wall 132 together form an oil guide groove 115, which is connected to the oil cup 15. If the lower tank wall 112 is directly connected to the rear side wall 132 without forming an oil guide groove 115, the oil flowing down along the rear side wall 132 will also flow along the lower tank wall 112 to the oil cup 15, which may result in excessive oil and dirt on the lower tank wall 112, making it difficult to maintain a clean appearance and causing unnecessary cleaning burden. It may also lead to excessive flow and the possibility of oil overflowing from the mouth of the oil cup 15. Therefore, the lower tank wall 112 is provided with a bent flange 113. On the one hand, this helps to fix the lower tank wall 112 to the rear side wall 132. On the other hand, an oil guide groove 115 is formed between the bent flange 113 and the rear side wall 132, so that the oil flowing down from the rear side wall 132 can flow directly to the oil cup 15 through the oil guide groove 115, which helps to share the oil guiding pressure of the lower tank wall 112 and reduce the cleaning burden on the user. In order to facilitate the connection between the oil guide groove 115 and the oil cup 15, a through hole is provided on the bent flange 113. The oil guide groove 115 is connected to the oil cup 15 through the through hole. Alternatively, the length of the bent flange 113 in the left and right direction can be slightly less than the length of the lower tank wall 112 in the left and right direction, so as to form a break at both ends of the oil guide groove 115 to achieve the connection between the oil guide groove 115 and the oil cup 15.

[0060] In an embodiment of the present invention, please refer to Figures 1 to 2 , Figures 6 to 12The range hood includes two sub-smoke inlets 1031 arranged in a left-right direction. The lower opening and closing structure 12 includes two louvers 121, each louver 121 installed in one of the sub-smoke inlets 1031. This allows for the diversion of fumes as they pass through the smoke inlet 103, better accommodating the layout of a kitchen with two stoves on the left and right. Each louver 121 includes a drive structure 123 and multiple blades 122. The drive structure 123 drives the multiple blades 122 to oscillate, opening or closing the lower smoke inlet 102. Specifically, the two louvers 121 can move independently, and the drive structure 123 is connected to one side of the blades 122, causing the multiple blades 122 to rotate synchronously around the same side as an axis. This controls the opening and closing of the two sub-smoke inlets 1031 and regulates the smoke flow rate of each sub-smoke inlet 1031, further enriching the usage scenarios of the range hood. If the smoke hood 1 is used on a dual gas stove, and one side is a wok and the other side is a stew pot, the opening of the louvers 121 of the smoke inlet 1031 on the side where the stew pot is located can be reduced, and the opening of the louvers 121 of the smoke inlet 1031 on the side where the wok is located can be increased (see...). Figure 6 and Figure 7 , Figure 6 In the application scenario of the range hood, the pot on the right side of the stove is a stew pot, and the pot on the left side of the stove is a frying pan; Figure 7 In the application scenario of the range hood, the left burner is for stewing pots and the right burner is for frying pans. This improves the smoke extraction effect on the frying pan side, reducing the possibility of smoke escaping; if both sides are frying pans, and both sub-smoke vents 1031 are opened simultaneously (see...) Figure 8 Furthermore, when only one side of the gas stove is used, only the secondary smoke inlet 1031 on that side can be opened, allowing the smoke to be drawn more concentrated into the smoke collection hood 1. Therefore, the range hood used in this solution can basically cover all current dual-burner application scenarios, thus taking into account the smoke extraction effect of the range hood in various application scenarios.

[0061] Further, see Figures 6 to 12 The drive structure 123 is connected to the upper side of the blade 122. The drive structure 123 can drive multiple blades 122 to rotate downward with their upper side as the axis to open the lower smoke inlet 102. That is, when the louver 121 is opened, the blade 122 rotates downward as a whole, and the louver 121 opens in an outward manner, which facilitates cleaning of the louver 121. The upper side of the blade 122 is the side connected to the drive structure 123 when the blade 122 is open; while the lower side of the blade 122 is the side away from the drive structure 123 when the blade 122 is open.

[0062] Furthermore, when the lower smoke inlet 102 is opened, the upper sides of the blades 122 of the two louvers 121 are close together, and the lower sides of the blades 122 of the two louvers 121 are far apart. That is, when both louvers 121 are open, the blades 122 of the two louvers 121 are symmetrical and together form a figure-eight shape (see...). Figure 8 Thus, when the two sub-smoke inlets 1031 are opened, the blades 122 of the two louvers 121 can work together to form a smoke-gathering effect at the smoke inlet groove 11, thereby further reducing the possibility of oil fumes escaping and improving the smoke extraction effect of the range hood.

[0063] To achieve synchronous rotation of multiple blades 122, in one embodiment, see... Figure 10 and Figure 11 The louver 121 also includes a connecting rod 124, which has multiple mounting positions 125. A blade 122 is mounted at one mounting position 125. The connecting rod 124 moves left and right along the range hood to cause the multiple blades 122 to swing. Specifically, the multiple mounting positions 125 on the connecting rod 124 are spaced apart, and the distance between two mounting positions 125 is equal to or slightly less than the width of the blade 122. This allows the sub-smoke inlet 1031 to close when the blade 122 rotates to a horizontal or near-horizontal position. Furthermore, when a blade 122 is mounted at one mounting position 125, the connecting rod 124 moves left and right along the range hood, causing the multiple blades 122 to swing synchronously, thereby opening or closing the sub-smoke inlet. In this design, the mounting position 125 is configured as a mounting hole in the connecting rod 124. A locking protrusion 1121 is provided on one side of the blade 122. The locking protrusion 1121 passes through the mounting hole and engages with the periphery of the mounting hole, thereby facilitating the quick installation of the connecting rod 124 and multiple blades 122.

[0064] Furthermore, the drive structure 123 includes a drive motor 126, a first gear 127, and a second gear 128. The first gear 127 is rotatably connected to the output end of the drive motor 126, and the second gear 128 is drive-connected to one of the multiple blades 122. The first gear 127 and the second gear 128 mesh and drive each other. The drive motor 126 drives the first gear 127 to rotate, thereby driving the second gear 128 to swing one of the multiple blades 122, which in turn causes the connecting rod 124 to move in the left and right direction of the range hood.

[0065] Specifically, the first gear 127 and the second gear 128 mesh and transmit power. The first gear 127 is rotatably connected to the output end of the drive motor 126, and the second gear 128 is driven to one of the multiple blades 122. This allows the drive motor 126 to drive the first gear 127 to rotate, which in turn drives the second gear 128 to cause one of the multiple blades 122 to oscillate. The oscillation of this blade 122 then causes the connecting rod 124 to move left and right along the range hood, thus achieving synchronous rotation of the multiple blades 122. Furthermore, the synchronous oscillation of the multiple blades 122 via the drive motor 126 and gear set facilitates precise control of rotation. On the other hand, the drive motor 126 only needs to drive the first gear 127 to rotate in the opposite direction to close the louvers 121, improving ease of operation and reducing installation space requirements.

[0066] To facilitate the arrangement of the drive structure 123, in one embodiment, see... Figure 1 , Figures 9 to 11 The smoke inlet 103 is provided with a partition rib 129 to separate two sub-smoke inlets 1031. At least a portion of the two drive structures 123 is disposed on the partition rib 129. Specifically, the partition rib 129 can completely separate the smoke inlet 103 into two sub-smoke inlets 1031, and the partition rib 129 can also be used for the installation of the drive structures 123, thereby reducing the space occupied by the drive structures 123 on the two sub-smoke inlets 1031. On the other hand, at least a portion of the drive structures 123 is disposed on the side of the partition rib 129 opposite to the smoke inlet groove 11, thereby further reducing the adhesion of oil fumes and improving service life. In this example, two mounting frames 14 are provided at the smoke outlet 103, arranged along the left and right direction of the range hood. One mounting frame 14 is equipped with a louver 121, and multiple blades 122 are rotatably mounted on opposite sides of the mounting frame 14. The two ends of the two mounting frames 14 that are close to each other form the partition rib 129. Therefore, the two ends of the two mounting frames 14 that are close to each other are provided with mounting grooves 141. The drive motor 126 is located in the mounting groove 141. The first gear 127 is rotatably mounted on the groove wall of the mounting groove 141, and the second gear 128 is also rotatably mounted on the mounting frame 14 and rotatably connected to the blade 122 on the side close to the drive motor 126, thereby facilitating the installation of the louver 121 and ensuring the structural compactness of the drive structure 123.

[0067] The above are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the protection scope of the present invention.

Claims

1. A range hood, characterized in that, include: A smoke hood has a smoke collection chamber and a lower smoke inlet communicating with the smoke collection chamber. The lower smoke inlet is provided with a smoke inlet groove recessed into the smoke collection chamber, and the smoke inlet groove is provided with a smoke outlet communicating with the smoke collection chamber. as well as A lower opening and closing structure is provided at the smoke inlet to open or close the lower smoke inlet; The smoke inlet is located on the upper wall of the smoke inlet groove, and the lower opening and closing structure is located on the upper side of the smoke inlet; and the upper wall extends obliquely downward along the direction close to the lower opening and closing structure. An oil cup is provided below the smoke collection hood. The lower wall of the smoke inlet groove is inclined, and the upper side of the lower wall is close to the rear side wall of the smoke collection hood. The lower side of the lower wall extends into the opening of the oil cup.

2. The range hood as described in claim 1, characterized in that, Both the lower opening and closing structure and the smoke outlet are located close to the rear side wall of the smoke collection hood; and / or, the side of the upper groove wall closest to the rear side wall of the smoke collection hood extends downward toward the smoke collection chamber.

3. The range hood as described in claim 1, characterized in that, The upper side of the lower tank wall is provided with a bent flange. The side of the bent flange away from the lower tank wall is connected to the rear side wall, and the bent flange and the rear side wall together form an oil guide groove, which is connected to the oil cup.

4. The range hood as described in claim 1, characterized in that, A condenser plate is provided on the side of the lower groove wall facing the smoke inlet groove.

5. The range hood as described in any one of claims 1 to 4, characterized in that, The smoke inlet includes two sub-smoke inlets arranged in a left-right direction. The lower opening and closing structure includes two louvers, one of which is installed in one of the sub-smoke inlets. Each louver includes a drive structure and multiple blades. The drive structure can drive the multiple blades to swing to open or close the lower smoke inlet.

6. The range hood as described in claim 5, characterized in that, The drive structure is connected to the upper side of the blades, and the drive structure can drive the multiple blades to rotate downward with their upper side as the axis to open the lower smoke inlet.

7. The range hood as described in claim 6, characterized in that, When the lower smoke inlet is opened, the upper sides of the blades of the two louvers are close to each other, and the lower sides of the blades of the two louvers are far apart.

8. The range hood as described in claim 5, characterized in that, The louver also includes a connecting rod with multiple mounting positions. One of the blades is mounted at one of the mounting positions. The connecting rod moves in the left-right direction of the range hood to drive the multiple blades to swing.

9. The range hood as described in claim 8, characterized in that, The drive structure includes a drive motor, a first gear, and a second gear. The first gear is rotatably connected to the output end of the drive motor, and the second gear is drively connected to one of the plurality of blades. The first gear and the second gear mesh and drive each other. The drive motor drives the first gear to rotate, thereby driving the second gear to swing one of the multiple blades, which in turn causes the connecting rod to move in the left-right direction of the range hood.

10. The range hood as described in claim 5, characterized in that, The smoke passage is provided with a partition rib to separate two sub-smoke passages, and at least a portion of the two drive structures are provided on the partition rib.

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