Integrated range hood

Abstract

A lower box body can do lifting motion relative to an upper box body, an integrated module of the lower box body is provided with an inner cavity, an air inlet channel is formed between the rear wall of the inner cavity and a rear plate of the lower box body, and the rear wall of the inner cavity protrudes backwards and outwards, so that at least one section of the air inlet channel forms an airflow acceleration channel with the width decreasing from bottom to top and from front to back; a flow guide path of the air inlet channel is lengthened along with descending of the lower box body and is shortened along with ascending of the lower box body. The air inlet channel of the integrated range hood is provided with at least one section of airflow acceleration channel, lampblack airflow enters the air inlet channel in an acceleration manner, the phenomenon of smoke leakage at an inlet of the air inlet channel is avoided, in addition, a flow guide path of the air inlet channel is lengthened along with descending of the lower box body, and the lampblack can be buffered and rectified after the air channel is lengthened, so that the lampblack is prevented from entering the air inlet channel. An air inlet of the air inlet channel is closer to a smoke source, a negative pressure area descends, the oil smoke suction effect is improved, a flow guide path of the air inlet channel is shortened along with rising of the lower box body, the whole machine structure is more compact, and the operation space of a user is not occupied.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood, especially to an integrated range hood. BACKGROUND

[0002] Chinese kitchens are generally small in area, and with the improvement of living standards, smoke, stove, dishwasher, steaming oven in kitchen appliances have basically become standard. However, due to space constraints, some kitchens do not have space to install a steaming oven, and some users will balance the necessity between the steaming oven and other appliances such as a disinfection cabinet and a microwave oven, and choose to install one of them. Therefore, in a limited space, how to place more household appliances is a difficulty. Some users choose to install an integrated stove to integrate smoke, stove and steaming in one countertop. Although the integrated stove integrates smoke, stove and steaming in one countertop, it releases the space of the hanging cabinet, but due to the generally high space of the hanging cabinet, it is very inconvenient to use and the utilization rate is not high. Some users may choose a table type steaming oven to place the appliance on the countertop. The table type steaming oven is small in volume and low in price, and its performance is not as good as that of an embedded steaming oven. In addition, a table type hot water kettle and a rice cooker are standard in all families. If a table type steaming oven is added, the countertop will be crowded and not aesthetic. Some users choose to place an embedded steaming oven below the countertop. On the one hand, it occupies the space of the lower cabinet, and on the other hand, the user experience is very poor. The user has to bend down to place the steaming tray, and has to squat down to clean the inner tank. In addition, when the door is opened, the user's face will be splashed with steam. Therefore, some embedded steaming ovens are placed in high cabinets, and small kitchens do not have high cabinet space.

[0003] In addition, people have invented a lifting type range hood. When the range hood is turned on, the smoke inlet is lowered. When the range hood is turned off, the smoke inlet is raised. For example, the Chinese utility model patent No. 202222918682.7 (authorized announcement No. CN 218864291 U) discloses an oil smoke machine. The oil smoke machine comprises a smoke collecting cavity, a fan assembly and a lifting assembly. The fan assembly is arranged inside the smoke collecting cavity, and the lifting assembly is connected with the smoke collecting cavity. The lifting assembly can drive the smoke collecting cavity to lift. When the oil smoke machine is running, the lifting assembly drives the smoke collecting cavity to descend below the cabinet, and the fan assembly starts to suck and exhaust the oil smoke. When the oil smoke machine is not running, the lifting assembly drives the smoke collecting cavity to rise into the cabinet, and the fan assembly is closed. The existing lifting type range hood does not provide an integrated scheme of a cooking module. If the cooking module is integrated on the lifting type range hood, the air inlet channel needs to be designed accordingly. On the one hand, the structure of the air inlet channel needs to be considered in view of the cooking module. On the other hand, how to improve the oil smoke effect needs to be considered. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art. An integrated range hood is provided, which can accelerate and buffer the flow of oil smoke through the structure improvement of the air inlet channel.

[0005] The utility model discloses a kind of integrated range hood, including upper box and lower box, it is characterized by: the lower box can be lifted relative to upper box, lower box has integrated module, the integrated module has inner cavity, rear wall of the inner cavity is formed with air inlet passage between lower box rear plate, rear wall of the inner cavity is outwardly convex to rear, and air inlet passage at least one section forms airflow acceleration passage from bottom to top, front and rear width is changed from wide to narrow, the flow path of the air inlet passage is lengthened with the lowering of lower box and shortened with the lifting of lower box.

[0006] Air inlet passage can have different structures, preferably, the air inlet passage includes first air inlet passage and second air inlet passage, the second air inlet passage is located above the first air inlet passage, and the flow path of the second air inlet passage is lengthened with the lowering of lower box and shortened with the lifting of lower box. By so arranging, the rear wall of the inner cavity constitutes the front wall of the first air inlet passage, and the flow path length of the first air inlet passage remains unchanged during the lifting and lowering of the lower box, while the flow path of the second air inlet passage changes. After the lowering of the lower box, the lengthened second air inlet passage can buffer and rectify the airflow.

[0007] In order to increase the cross-sectional area of the outlet section of the first air inlet passage and increase the space of the inner cavity while reducing the wind resistance of the passage, the outlet section of the first air inlet passage is inclined forward from bottom to top.

[0008] In order to change the flow direction of the outlet of the second air inlet passage and guide the airflow to the rear side, the outlet section of the second air inlet passage is inclined backward from bottom to top.

[0009] In order to make the range hood inside the upper box have front and rear air inlets, a fan frame is installed inside the upper box, and a range hood is installed inside the fan frame. The range hood includes a rear main air inlet and a front auxiliary air inlet, and the first air inlet passage is connected to the rear main air inlet and the front auxiliary air inlet through the second air inlet passage. By so arranging, after the oil fume is sucked into the first air inlet passage, it can enter the rear main air inlet and the front auxiliary air inlet of the range hood after being guided by the second air inlet passage.

[0010] In order to increase the cross-sectional area of the outlet of the first air inlet passage and reduce the wind resistance, thereby forming a buffer and rectification area at the outlet section of the first air inlet passage, preferably, the vertical projection of the rear main air inlet falls entirely within the outlet section of the first air inlet passage.

[0011] In order to increase the volume of the inner cavity as much as possible, the vertical upward extension line of the outermost convex part of the rear wall of the inner cavity is located between the rear main air inlet and the rear wall of the fan frame.

[0012] In order to smoothly guide the air flow from the first air inlet channel into the air inlet of the range hood, the second air inlet channel is arranged inside the upper cabinet and below the range hood.

[0013] In order to make the first air inlet channel and the second air inlet channel more natural, and form a buffer cavity in the second air inlet channel, the front side wall of the second air inlet channel is outwardly convex, and the front edge of the first air inlet channel outlet section is located at the rear side of the front side wall of the second air inlet channel.

[0014] Further preferably, the front side wall of the second air inlet channel is a folding plate, which is unfolded synchronously with the lowering of the lower cabinet and folded synchronously with the lifting of the lower cabinet, in the unfolded state, the lower half of the folding plate is arranged from top to bottom and rearwardly, and the lower edge of the folding plate is located in front of the upper edge of the first air inlet channel outlet section, and the upper half of the folding plate is arranged from bottom to top and rearwardly, and the upper edge of the folding plate is located in front of the rear main air inlet. In this way, the folding plate is unfolded or folded synchronously with the lifting and lowering of the lower cabinet, so that the size of the buffer space formed by the second air inlet channel can be adjusted.

[0015] In order to avoid oil smoke running at the joint of the first air inlet channel and the second air inlet channel, the lower edge of the folding plate is connected to the upper edge of the first air inlet channel outlet section through the joint plate.

[0016] In order to make the oil smoke gas flow from the first air inlet channel be partially guided to the auxiliary air inlet on the front side of the range hood, an oil guiding plate is installed below the range hood, an air inlet gap is left between the oil guiding plate and the range hood, the second air inlet channel communicates with the front side auxiliary air inlet through the air inlet gap, and the upper edge of the folding plate is connected to the rear part of the oil guiding plate.

[0017] In order to drive the lower cabinet to move up and down relative to the upper cabinet, a driving mechanism for driving the lower cabinet to move up and down is installed inside the upper cabinet.

[0018] Compared with the prior art, the integrated range hood has the following advantages: the lower cabinet of the integrated range hood has an integrated module, an air inlet channel is formed between the rear wall of the inner cavity of the integrated module and the rear plate of the lower cabinet, and the rear wall of the inner cavity is outwardly convex, so that at least one section of the air inlet channel forms an air flow accelerating channel with a width decreasing from bottom to top. The oil smoke gas flow is accelerated into the air inlet channel, avoiding the phenomenon of running smoke at the inlet of the air inlet channel. In addition, the flow path of the air inlet channel becomes longer as the lower cabinet is lowered, and the elongated air duct can buffer and rectify the oil smoke, which is beneficial to reducing noise. The air inlet of the air inlet channel is closer to the smoke source, the negative pressure area is lowered, which is beneficial to improving the oil smoke suction effect. The flow path of the air inlet channel becomes shorter as the lower cabinet is lifted, so that the structure of the whole machine is more compact, and the operation space of the user is not occupied. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Figure 1 is a structural schematic diagram of an integrated range hood according to an embodiment of the present application (lower cabinet raised state) ;

[0020] Figure 2 Figure 2 is a side view of the range hood shown in Figure 1; Figure 1

[0021] Figure 3 Figure 3 is a structural sectional view of the range hood shown in Figure 1; Figure 1

[0022] Figure 4 Figure 4 is a structural schematic diagram of an integrated range hood according to an embodiment of the present application (lower cabinet lowered state) ;

[0023] Figure 5 Figure 5 is a side view of the range hood shown in Figure 4; Figure 4

[0024] Figure 6 Figure 6 is a structural sectional view of the range hood shown in Figure 4. Figure 4 DETAILED DESCRIPTION

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] As shown in Figure 1, the integrated range hood according to the present embodiment includes an upper cabinet 1 and a lower cabinet 2, the upper cabinet 1 is internally provided with a fan frame 3, the fan frame 3 is internally mounted with a range hood fan 4, the lower cabinet 2 is driven to move up and down relative to the upper cabinet 1 by a driving mechanism 5, the driving mechanism 5 can be installed at multiple different positions, and the driving mechanism according to the present embodiment is installed inside the upper cabinet. The lower cabinet 2 is provided with an integrated module 5, which is not limited and can be a cooking module, a refrigerator, a sterilizer or other different modules. The integrated module 5 is provided with an inner cavity 51, an air inlet passage is formed between the rear wall of the inner cavity 51 and the rear wall of the lower cabinet 2, the rear wall of the inner cavity 51 is outwardly convex to the rear to form at least one section of the air inlet passage into an airflow accelerating passage that narrows from top to bottom, and the flow path of the air inlet passage becomes longer as the lower cabinet 2 is lowered and becomes shorter as the lower cabinet 2 is raised. Figures 1 to 6

[0027] ​​​​​In the embodiment, the air inlet channel includes the first air inlet channel 6 and the second air inlet channel 7 which are in communication with each other, the second air inlet channel 7 is located above the first air inlet channel 6, the second air inlet channel 7 is arranged inside the upper cabinet 1 and below the range hood 4, the flow guide path of the second air inlet channel 7 becomes longer as the lower cabinet 2 descends and becomes shorter as the lower cabinet 2 ascends. The rear wall of the inner cavity 51 constitutes the front wall of the first air inlet channel 6, the length of the flow guide path of the first air inlet channel 6 does not change during the lifting and lowering of the lower cabinet 2, the length of the flow guide path of the second air inlet channel 7 changes, after the lower cabinet 2 descends, the lengthened second air inlet channel 7 can buffer and rectify the airflow, which is beneficial to improve the oil fume suction effect.

[0028] The range hood 4 of the embodiment adopts a front and rear double-sided air inlet centrifugal fan, that is, includes the rear main air inlet 41 and the front auxiliary air inlet 42. The first air inlet channel 6 is not only in communication with the rear main air inlet 41 through the second air inlet channel 7, but also in communication with the front auxiliary air inlet 42.

[0029] In the embodiment, the outermost convex part of the rear wall of the inner cavity 51 is located in the middle region of the rear wall, thereby, the front and rear distance of the inlet end and the outlet end of the first air inlet channel 6 is the widest, and the front and rear distance of the middle of the first air inlet channel 6 is the narrowest. Therefore, the outlet section of the first air inlet channel 6 is inclined forward from bottom to top, which can increase the cross-sectional area of the outlet section of the first air inlet channel 6, so as to increase the space of the inner cavity 51 while reducing the air resistance of the channel. The outlet section of the second air inlet channel 7 of the embodiment is inclined backward from bottom to top, thereby, the flow guide direction of the outlet of the second air inlet channel can be changed, the airflow can be guided to the rear main air inlet 41, which is beneficial to improve the oil fume suction effect.

[0030] As shown in Figure 3 and Figure 6 , the vertical projection of the rear main air inlet 41 falls into the outlet section of the first air inlet channel 6 as a whole, and the vertical upward extension line of the outermost convex part 52 of the rear wall of the inner cavity 51 is located between the rear main air inlet 41 and the rear wall of the fan frame 3. In this way, the airflow in the first air inlet channel 6 can enter the rear main air inlet after being buffered and rectified, which can reduce noise and is beneficial to improve the oil fume suction effect.

[0031] In the embodiment, the front wall of the second air inlet channel 7 is convex forward, the front edge of the outlet section of the first air inlet channel 6 is located at the rear side of the front wall of the second air inlet channel 7, the first air inlet channel 6 and the second air inlet channel 7 are more naturally connected, and because the front and rear depths of the second air inlet channel 7 are greater than the front and rear depths of the first air inlet channel 6, a buffer cavity is formed in the second air inlet channel 7, which can stabilize and buffer the oil fume airflow, which is beneficial to reduce noise and improve the oil fume suction effect.

[0032] Specifically, the front side wall of the second air inlet channel 7 is a folding plate 8, which is unfolded synchronously with the lowering of the lower cabinet 2 and folded synchronously with the lifting of the lower cabinet 2, in the unfolded state, the lower half of the folding plate 8 is arranged extending rearward from top to bottom, and the lower edge of the folding plate 8 is located in front of the upper edge of the outlet section of the first air inlet channel 6, the upper half of the folding plate 8 is arranged inclined rearward from bottom to top, and the upper edge of the folding plate 8 is located in front of the rear main air inlet 41, and the lower edge of the folding plate 8 is connected to the upper edge of the outlet section of the first air inlet channel 6 through a connecting plate 9. With different lifting strokes of the lower cabinet 2, the buffer cavity volume formed by the second air inlet channel 7 also changes accordingly. In addition, the folding plate 8 can be an integrally formed flexible piece and embedded in a sheet metal piece to ensure that the turning structure has a certain rigidity, thereby ensuring the stability of the parts during movement.

[0033] In addition, an oil guide plate 10 is installed below the range hood 4, and an air inlet gap 11 is left between the oil guide plate 10 and the range hood 4, the second air inlet channel 7 is connected to the front auxiliary air inlet 42 through the air inlet gap 11, and the upper edge of the folding plate 8 is connected to the rear part of the oil guide plate 10. The oil guide plate 10 plays a role in guiding oil on one hand, and also plays a role in guiding flow on the other hand, so that the oil fume flow out of the first air inlet channel 6 can be partially guided to the front auxiliary air inlet 42 of the range hood 4.

[0034] In the lowered state of the lower cabinet 2, the oil fume sucked into the lower cabinet 2 enters the air inlet of the range hood 4 through the first air inlet channel 6 and the second air inlet channel 7 in sequence when the range hood is working. In the embodiment, the range hood 4 adopts a centrifugal fan with front and rear air inlets, the rear main air inlet 41 is located above the first air inlet channel 6 and the second air inlet channel 7, the vertical projection of the rear main air inlet 41 falls within the second air inlet channel 7, most of the oil fume entering the first air inlet channel 6 directly flows upward to enter the rear main air inlet 41, and a small part of the oil fume enters the front auxiliary air inlet 42 after being guided by the oil guide plate 10.

[0035] Directional terms used in the description and claims of the present application, such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom", etc., are used for convenience and are not intended to be limiting as to the orientation of the various example structures and elements described herein or claimed unless specifically so identified. Since the embodiments of the present application can be positioned in different orientations, such directional terms are used only for convenience and are not to be construed as limiting the present application unless specifically so identified. For example, "up" and "down" are not necessarily limited to the gravitational orientation of the device.

[0036] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, various modifications or improvements can be made to the present application without departing from the principles of the present application, and these are all considered to be within the protection scope of the present application.

Claims

1. An integrated extractor hood comprising an upper casing (1) and a lower casing (2), characterized in that: The lower cabinet (2) can move up and down relative to the upper cabinet (1), and the lower cabinet (2) has an integrated module (5) with an inner cavity (51), a rear wall of the inner cavity (51) and a rear plate of the lower cabinet (2) form an air inlet channel, the rear wall of the inner cavity (51) is outwardly convex to form an air flow accelerating channel with a width decreasing from bottom to top at least in one section, and the air inlet channel has a guide path that becomes longer as the lower cabinet (2) descends and becomes shorter as the lower cabinet (2) rises.

2. The integrated range hood according to claim 1, characterized in that: The air inlet channel includes a first air inlet channel (6) and a second air inlet channel (7), the second air inlet channel (7) is located above the first air inlet channel (6), and the guide path of the second air inlet channel (7) becomes longer as the lower cabinet (2) descends and becomes shorter as the lower cabinet (2) rises.

3. The integrated range hood according to claim 2, wherein: The outlet section of the first air inlet channel (6) is inclined forward from bottom to top.

4. The integrated range hood according to claim 2, wherein: The outlet section of the second air inlet channel (7) is inclined backward from bottom to top.

5. The integrated range hood according to claim 2, wherein: The upper cabinet (1) is internally provided with a fan rack (3), the fan rack (3) is internally provided with an oil fume suction fan (4), the oil fume suction fan (4) includes a rear main air inlet (41) and a front auxiliary air inlet (42), the first air inlet channel (6) is connected with the rear main air inlet (41) and the front auxiliary air inlet (42) through the second air inlet channel (7).

6. The integrated range hood according to claim 5, wherein: The vertical projection of the rear main air inlet (41) falls within the outlet section of the first air inlet channel (6).

7. The integrated range hood according to claim 5, wherein: The vertical upward extension line of the outermost convex part (52) of the rear wall of the inner cavity (51) is located between the rear main air inlet (41) and the rear side wall of the fan rack (3).

8. The integrated range hood according to claim 5, wherein: The second air inlet channel (7) is arranged inside the upper cabinet (1) and below the oil fume suction fan (4).

9. The integrated range hood according to claim 5, wherein: The front side wall of the second air inlet channel (7) is outwardly convex forward, and the front edge of the outlet section of the first air inlet channel (6) is located behind the front side wall of the second air inlet channel (7).

10. The integrated range hood according to claim 9, characterized in that: The front side wall of the second air inlet channel (7) is a folding plate (8), which is unfolded synchronously as the lower cabinet (2) descends and folded synchronously as the lower cabinet (2) rises, in the unfolded state, the lower half of the folding plate (8) is arranged to extend backward from top to bottom, and the lower edge of the folding plate (8) is located in front of the upper edge of the outlet section of the first air inlet channel (6), and the upper half of the folding plate (8) is arranged to be inclined backward from bottom to top, and the upper edge of the folding plate (8) is located in front of the rear main air inlet (41).

11. The integrated range hood according to claim 10, wherein: The lower edge of the folding plate (8) is connected to the upper edge of the outlet section of the first air inlet channel (6) through a connecting plate (9).

12. The integrated range hood of claim 10, wherein: An oil guide plate (10) is arranged below the oil fume suction fan (4), an air inlet gap (11) is left between the oil guide plate (10) and the oil fume suction fan (4), the second air inlet channel (7) is connected with the front auxiliary air inlet (42) through the air inlet gap (11), and the upper edge of the folding plate (8) is connected to the rear part of the oil guide plate (10).

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