A range hood with an optional air inlet

Abstract

The utility model discloses a kind of smoke exhausters of optional air intake position, including smoke cover, the lower end of the front of smoke cover is formed with air inlet, air inlet is correspondingly provided with air inlet door component, air inlet door component includes guide vane plate and switch door motor component, the lower end of guide vane plate is hinged smoke cover, guide vane plate is swinged and set, switch door motor component is driven and is connected guide vane plate, guide vane plate has opening position relative to air inlet, on opening position, guide vane plate is set to backward inclination, the quantity of air inlet door component is at least two sets, air inlet door component is arranged along left and right direction.The smoke exhauster of the utility model makes that user can select the actual air intake position of smoke exhauster according to actual needs, make air inlet partial opening or full opening, so the use flexibility of the smoke exhauster of the utility model is better.

Description

Technical Field

[0001] This utility model relates to the field of range hoods, specifically to a range hood with selectable air inlet. Background Technology

[0002] Currently, side-draft range hoods have a smoke collection hood at the bottom and an air handling unit at the top, housing a fan. The smoke collection hood is positioned above and behind the cooktop, with an air inlet at its lower front. When the fan operates, it creates negative pressure at the air inlet, drawing in the fumes from the food in the cookware. Most modern kitchens use dual-burner gas cooktops, meaning they have two burners, allowing for simultaneous heating of two cookware. Therefore, the range hood's air inlet is designed to be wide to effectively extract fumes from both cookware. However, in smaller households, a significant portion of cooking involves only one burner, resulting in approximately half of the range hood's extraction efficiency being wasted – only clean air is extracted. This leads to energy waste and a lack of focused extraction, indicating insufficient flexibility in current range hood technology and necessitates improvement. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a range hood with selectable air inlet position, which has better flexibility in use.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] This utility model discloses a range hood with selectable air inlet, including a smoke collection hood. The lower front end of the smoke collection hood forms an air inlet. The air inlet is correspondingly provided with an air inlet door assembly. The air inlet door assembly includes a guide door plate and a door opening and closing motor assembly. The lower end of the guide door plate is hinged to the smoke collection hood. The guide door plate is swaying back and forth. The door opening and closing motor assembly drives and connects to the guide door plate. The guide door plate has an open position relative to the air inlet. In the open position, the guide door plate is tilted backward. The number of air inlet door assemblies is at least two sets, and the air inlet door assemblies are arranged in the left-right direction.

[0006] Preferably, the air inlet is an integral, interconnected structure, and adjacent air guide panels can be aligned and connected.

[0007] Preferably, the air inlet door assembly includes a lever arm and an ear plate. The ear plate is installed on the rear side of the air guide door panel. The door opening and closing motor assembly is provided with an output shaft. The lower end of the lever arm is circumferentially positioned and connected to the output shaft. The upper end of the lever arm is formed with a sliding groove. The ear plate is slidably hinged to the sliding groove.

[0008] Preferably, the upper end of the flow guide panel is bent backward to form a hook plate portion.

[0009] Preferably, the smoke hood is provided with an opening limit plate, and in the open position, the air guide plate is located in front of the opening limit plate.

[0010] Preferably, the upper front end of the smoke hood has an eave, and smoke-blocking side plates are respectively provided on the left and right sides of the smoke hood, with the upper end of the smoke-blocking side plates connected to the eave.

[0011] Preferably, the upper rear part of the smoke hood has beveled corners at both the left and right ends.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting an air inlet corresponding to the air inlet, the air inlet assembly includes a guide door plate and a door opening and closing motor assembly. The lower end of the guide door plate is hinged to the smoke hood. The guide door plate is swaying back and forth. The door opening and closing motor assembly drives and connects to the guide door plate. The guide door plate has an open position relative to the air inlet. In the open position, the guide door plate is tilted backward. The number of air inlet assemblies is at least two sets. The air inlet assemblies are arranged in the left and right direction, which makes the range hood of this utility model have better flexibility of use. Attached Figure Description

[0013] Figure 1 This is a frontal three-dimensional structural diagram of the range hood of this utility model.

[0014] Figure 2 This is a cross-sectional view of the range hood of this utility model from the left.

[0015] Figure 3 This is a rear three-dimensional structural diagram of the range hood of this utility model with the rear cover plate of the smoke collection hood removed.

[0016] Figure 4 for Figure 3 A partial structural diagram at point A.

[0017] Figure 5 This is a three-dimensional structural diagram of the lever arm of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram showing the air inlet door assembly of the range hood of this utility model in a closed state.

[0019] Figure 7 This is a three-dimensional sectional view of the range hood of this utility model.

[0020] Labeling: Smoke hood 1; Air inlet 101; Chamfered corner 102; Air inlet door assembly 11; Guide door panel 111; Hook plate 1111; Door opening / closing motor assembly 112; Output shaft 1121; Hinge 113; Toggle arm 114; Slide groove 1141; Flat hole 1142; Ear plate 115; Sliding pin 116; Motor cover 117; Eaves 12; Smoke baffle side panel 13; Lower end plate 15; Door opening limit plate 16; Air handling unit 2; Centrifugal fan 3; Oil collection trough 4. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] This utility model relates to a range hood with an optional air inlet, such as... Figures 1 to 3 As shown, the system includes a smoke hood 1, with an air inlet 101 formed at the lower front end of the smoke hood 1. The air inlet 101 is rectangular, and an air inlet door assembly 11 is correspondingly provided for the air inlet 101, that is, the air inlet door assembly 11 is used to open and close the air inlet 101. Figures 1 to 4 As shown, the air inlet damper assembly 11 includes a guide door plate 111 and a door opening / closing motor assembly 112. The lower end of the guide door plate 111 is hinged to a smoke hood 1. Specifically, the lower end of the smoke hood 1 is provided with a lower end plate 15. The air inlet damper assembly 11 is provided with a hinge 113. The guide door plate 111 is hinged to the lower end plate 15 through the hinge 113. The guide door plate 111 is oscillating back and forth, that is, the oscillation axis of the hinge 113 is along the left and right direction, causing the guide door plate 111 to oscillate around the hinge axis in the left and right direction. The door opening / closing motor assembly 112 drives the guide door plate 111, that is, the door opening / closing motor assembly 112 is used to drive the guide door plate 111 to close and open. Figure 1 and Figure 2 As shown, the air deflector plate 111 has an open position relative to the air inlet 101. In the open position, the air deflector plate 111 is tilted backward, meaning that the air deflector plate 111 is tilted with the rear higher than the front when open. There are at least two sets of air inlet door assemblies 11, arranged in the left-right direction. Figure 1 In the embodiment shown, the number of air inlet door assemblies 11 is set to two sets, and the two sets of air inlet door assemblies 11 can operate independently.

[0023] like Figure 2As shown, the range hood includes a fan cabinet 2. The lower end of the fan cabinet 2 is fixedly connected to the upper end of the smoke collection hood 1, and the lower end of the fan cabinet 2 is connected to the smoke collection hood 1. A centrifugal fan 3 is installed inside the fan cabinet 2. The rotation axis of the impeller of the centrifugal fan 3 is inclined with the rear higher than the front. An exhaust port is provided on the front side of the centrifugal fan 3. When the guide door 111 is in the open state and the centrifugal fan 3 is running and exhausting air upwards, a negative pressure is generated at the air inlet 101. The air inlet 101 draws in the oil fume airflow, which passes through the air inlet 101 roughly backwards. As mentioned above, in the open position, the guide door 111 is inclined backwards, so the oil fume airflow turns and flows upwards along the front side of the guide door 111. That is to say, through the guiding effect of the guide door 111, the oil fume airflow easily turns upwards and flows to the fan cabinet 2, and then enters the centrifugal fan 3, which exhausts the oil fume airflow upwards. Figure 1 As shown, when the user only uses the burner on the right side of the gas stove, the guide plate 111 of the right-side air inlet assembly 11 can be opened, while the guide plate 111 of the air inlet assembly 11 on the left side remains closed. Thus, the suction effect of the centrifugal fan 3 mainly acts on the right side of the air inlet 101, which is beneficial for concentrated extraction of fumes. Correspondingly, the centrifugal fan 3 can operate at a lower speed (i.e., at a lower rotation speed), thereby avoiding wasted energy. When only the burner on the left side is used… When the burner is in the left position, only the guide plate 111 of the left-side air inlet assembly 11 is opened. When the user uses both burners of the gas stove simultaneously, all guide plates 111 of each air inlet assembly 11 can be opened. During this time, the door opening and closing motor assembly 112 operates to drive the corresponding guide plate 111 to open, avoiding direct manual operation of the door and facilitating the use of the range hood. At this time, the centrifugal fan 3 runs at a higher speed. After cooking is finished, all guide plates 111 of the air inlet assemblies 11 are closed. As can be seen from the above, the range hood of this utility model allows the user to select the actual air inlet position of the range hood according to actual needs, making the air inlet 101 partially or fully open. Therefore, the range hood of this utility model has good flexibility in use.

[0024] like Figure 1 As shown, the air inlet 101 is an integral, continuous structure, as... Figure 6 As shown, adjacent airflow guide panels 111 can be aligned and abutted together. This means that there are no partitions at the points where the air inlet 101 and the corresponding airflow guide panels 111 are close to each other; the entire air inlet 101 is interconnected, thus avoiding increased air resistance. For example... Figure 6As shown, when all the guide panels 111 are closed or open, they are aligned front to back and adjacent to each other, which helps to create a neat and simple visual effect for the range hood and also prevents mice from entering the range hood through the gaps between adjacent guide panels 111. When all the guide panels 111 are closed, the gap width between adjacent guide panels 111 can be set to approximately 1 mm. A glass panel can be glued to the front of the guide panel 111, such as... Figure 6 As shown, when all the air deflector panels 111 are in the closed state, the glass panels of the air deflector panels 111 are all in the same plane as the front of the smoke hood 1, and the air deflector panels 111 together seal the air inlet 101.

[0025] Furthermore, such as Figure 3 and Figure 4 As shown, the air inlet damper assembly 11 includes a lever arm 114 and an ear plate 115. The ear plate 115 is installed on the rear side of the air deflector plate 111. Specifically, the rear side of the air deflector plate 111 is provided with a sleeve portion. The front end of the ear plate 115 is bent to form an insert. The insert is inserted into the sleeve and fixed to the sleeve with screws. The door opening and closing motor assembly 112 is provided with an output shaft 1121. The lower end of the lever arm 114 is circumferentially positioned and connected to the output shaft 1121. Specifically, as shown... Figure 5 As shown, a flat hole 1142 is formed at the lower end of the lever 114, and a flat shaft structure is formed on the output shaft 1121. The flat shaft structure is adapted to be inserted into the flat hole 1142, as shown. Figure 5 As shown, a groove 1141 is formed at the upper end of the lever 114, such as... Figure 4 As shown, the ear plate 115 is slidably hinged to the slide groove 1141. Specifically, the rear end of the ear plate 115 is provided with a sliding pin 116, which is slidably disposed in the slide groove 1141 and can rotate relative to each other within the slide groove 1141. Therefore, when the output shaft 1121 rotates, the output shaft 1121 drives the lever 114 to swing, and the inner wall of the slide groove 1141 pushes the sliding pin 116, causing the guide door plate 111 to swing. At the same time, the sliding pin 116 slides within the slide groove 1141. The above transmission structure can avoid the output shaft 1121 being arranged on the swing axis of the guide door plate 111, which is beneficial to the flexible layout of the door opening and closing motor assembly 112. Figure 2 and Figure 4 As shown, the air inlet door assembly 11 includes a motor cover 117 with a rearward opening. The door opening and closing motor assembly 112 is installed inside the corresponding motor cover 117, and the output shaft 1121 extends out of the motor cover 117. The rear end of the motor cover 117 is connected to the rear cover plate of the smoke collection hood 1. The motor cover 117 isolates the door opening and closing motor assembly 112 from the oil fumes, preventing oil stains from easily accumulating on the door opening and closing motor assembly 112.

[0026] Furthermore, such as Figure 2 , Figure 4 and Figure 7 As shown, the upper end of the flow guide plate 111 is bent backward to form a hook plate portion 1111, which helps to increase the structural rigidity of the upper end of the flow guide plate 111 and prevents the flow guide plate 111 from being easily deformed.

[0027] Furthermore, such as Figure 3 and Figure 7 As shown, the smoke hood 1 is provided with an opening limit plate 16. In the open position, the guide door plate 111 is located in front of the opening limit plate 16. Thus, the opening limit plate 16 restricts the maximum opening range of the guide door plate 111. The lower end of the opening limit plate 16 is riveted or connected to the lower end plate 15 by screws. The upper end of the opening limit plate 16 is bent backward to form a support plate. The rear end of the support plate is fixedly connected to the rear cover plate of the smoke hood 1.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the upper front end of the smoke hood 1 has an eave 12, meaning the eave 12 protrudes forward. Smoke-blocking side plates 13 are provided on the left and right sides of the smoke hood 1. The upper end of the smoke-blocking side plates 13 connects to the eave 12. Specifically, the upper end of the smoke-blocking side plates 13 rests against the outer side of the eave 12. The upper end of the smoke-blocking side plates 13 is connected to the eave 12 by corresponding screws. The lower part of the smoke-blocking side plates 13 is connected to the lower part of the smoke hood 1 by corresponding screws. The smoke-blocking side plates 13 extend forward relative to the lower part of the smoke hood 1, thus forming a smoke-trapping chamber with the eave 12 and the two smoke-blocking side plates 13. This traps the fumes within the smoke-trapping chamber, where they are then gradually drawn in by the air inlet 101, improving the smoke extraction performance of the range hood. Figure 7 As shown, an oil collection groove 4 is attached to the lower end of the smoke hood 1.

[0029] Furthermore, such as Figure 3 As shown, the upper rear part of the smoke hood 1 has chamfered corners 102 formed at the left and right ends respectively. In other words, the upper right and upper left rear corners of the smoke hood 1 are cut off and the cut surfaces are closed. As a result, the upper inner cavity of the smoke hood 1 gradually narrows from bottom to top, which is conducive to the convergence and flow of oil fume airflow to the fan cabinet 2.

Claims

1. A range hood with selectable air inlet, comprising a smoke collection hood (1), wherein an air inlet (101) is formed at the lower front end of the smoke collection hood (1), characterized in that: The air inlet (101) is provided with an air inlet door assembly (11). The air inlet door assembly (11) includes a guide door plate (111) and a door opening and closing motor assembly (112). The lower end of the guide door plate (111) is hinged to the smoke hood (1). The guide door plate (111) is swaying back and forth. The door opening and closing motor assembly (112) drives the guide door plate (111). The guide door plate (111) has an open position relative to the air inlet (101). In the open position, the guide door plate (111) is tilted backward. The number of air inlet door assemblies (11) is at least two sets. The air inlet door assemblies (11) are arranged in the left and right direction.

2. The range hood with optional air inlet according to claim 1, characterized in that: The air inlet (101) is an integral, interconnected structure, and the adjacent air guide panels (111) can be aligned and connected.

3. The range hood with optional air inlet according to claim 1, characterized in that: The air inlet door assembly (11) includes a lever arm (114) and an ear plate (115). The ear plate (115) is installed on the rear side of the guide door plate (111). The door opening and closing motor assembly (112) is provided with an output shaft (1121). The lower end of the lever arm (114) is circumferentially positioned and connected to the output shaft (1121). The upper end of the lever arm (114) forms a sliding groove (1141). The ear plate (115) is slidably hinged to the sliding groove (1141).

4. The range hood with optional air inlet position according to claim 1, characterized in that: The upper end of the flow guide plate (111) is bent backward to form a hook plate part (1111).

5. The range hood with optional air inlet according to claim 1, characterized in that: The smoke hood (1) is provided with a door opening limit plate (16). In the open position, the flow guide plate (111) is located in front of the door opening limit plate (16).

6. The range hood with optional air inlet position according to claim 1, characterized in that: The upper front end of the smoke hood (1) has an eave (12), and smoke-blocking side plates (13) are provided on the left and right sides of the smoke hood (1), with the upper end of the smoke-blocking side plates (13) connected to the eave (12).

7. The range hood with optional air inlet according to claim 1, characterized in that: The upper rear part of the smoke hood (1) has beveled corners (102) formed at both the left and right ends.

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