Smoke collecting device and range hood
By designing a retractable upper smoke inlet chamber and a smoke collection device with multiple smoke inlets, the interference problem of ultra-thin range hoods during rotation is solved, achieving an ultra-thin structure and efficient smoke extraction performance, suitable for cooking environments with both low and high smoke volumes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-17
AI Technical Summary
The existing ultra-thin smoke hoods are prone to direct interference with the smoke collection device when rotating, resulting in a decrease in smoke extraction performance.
Design a smoke collection device comprising an upper and a lower smoke inlet chamber, the smoke inlet chamber being rotatable and retracting into a concave cavity when closed, and providing multiple smoke inlets to achieve multi-dimensional smoke collection, including normally open and concealed smoke inlets, and combining with a fan device to improve smoke collection efficiency.
Without increasing thickness, the smoke collection device achieves an ultra-thin structure while possessing both small and large smoke extraction capabilities, providing a wide coverage area and preventing the escape of oil fumes.
Smart Images
Figure CN224135912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a smoke collection device and a range hood, belonging to the technical field of kitchen appliances. Background Technology
[0002] An ultra-thin range hood is a modern kitchen appliance primarily used to remove cooking fumes and odors. Compared to traditional range hoods, ultra-thin range hoods are favored for their slim design and high efficiency, especially their smoke collection devices, which are thinner, simpler in structure, and space-saving, making them suitable for small kitchens or open kitchens.
[0003] In the existing technology, the smoke collection device of the ultra-thin smoke machine also needs to have a thinner smoke inlet chamber, otherwise it will interfere with the front of the smoke collection device when rotating. However, a thinner smoke inlet chamber will affect its smoke extraction performance. Utility Model Content
[0004] The purpose of this utility model is to provide a smoke collection device and a range hood that avoids interference between the rotation of the upper smoke inlet chamber and the smoke collection chamber without sacrificing the thickness of the upper smoke inlet chamber, thus achieving an ultra-thin structural design.
[0005] This utility model is achieved through the following technical solution.
[0006] A smoke collection device includes a smoke collection chamber, the upper part of the front plate of the smoke collection chamber has an inwardly recessed cavity, and the top of the front plate of the smoke collection chamber is rotatably connected to an upper smoke inlet chamber. The rotation of the upper smoke inlet chamber causes it to have a closed state that is retracted into the recessed cavity and partially protrudes forward relative to the front plate of the smoke collection chamber, and an open state that extends to the front side of the smoke collection chamber.
[0007] The upper smoke inlet chamber has two normally open smoke inlets on its sides and a concealed smoke inlet on its inner surface. When the upper smoke inlet chamber is closed, the normally open smoke inlet is open and can draw in fumes, while the concealed smoke inlet is closed and cannot draw in fumes. When the upper smoke inlet chamber is open, both the normally open smoke inlet and the concealed smoke inlet are open and can draw in fumes.
[0008] As a further improvement of this utility model, the lower part of the front plate of the smoke collection chamber is fixed with a lower smoke inlet chamber that protrudes forward relative to the front plate. The two sides of the lower smoke inlet chamber are provided with lower normally open smoke inlets. When the upper smoke inlet chamber is in a closed state or an open state, the lower normally open smoke inlets are in an open state and can draw in oil fumes.
[0009] As a further improvement of this utility model, the top of the lower smoke inlet chamber is provided with a lower concealed smoke inlet. When the upper smoke inlet chamber is closed, the lower concealed smoke inlet is blocked by the bottom of the upper smoke inlet chamber. When the upper smoke inlet chamber is open, the lower smoke inlet is open and can draw in oil fumes.
[0010] As a further improvement of this utility model, when the upper smoke inlet chamber is in the closed state, the positional relationship between the bottom of the upper smoke inlet chamber and the lower smoke inlet chamber is such that the upper smoke inlet chamber and the lower smoke inlet chamber form a complete outer covering structure that covers most of the area of the front plate of the smoke collection chamber.
[0011] As a further improvement of this utility model, when the upper smoke inlet chamber is in the closed state, the two sides of the upper smoke inlet chamber and the corresponding two side walls of the concave cavity are in contact.
[0012] As a further improvement of this utility model, the upper normally open smoke inlet extends along the length direction of the side of the upper smoke inlet cavity, and the lower normally open smoke inlet extends along the length direction of the side of the lower smoke inlet cavity, so that the upper normally open smoke inlet and the lower normally open smoke inlet form a continuous lateral smoke inlet extending along the length direction of the side of the outer covering structure.
[0013] As a further improvement of this utility model, the front plate of the smoke collection chamber is inclined forward from its bottom edge to its top edge, so that the portion of the front plate located on both sides of the outer covering structure forms a smoke guide plate for increasing the resistance to the rising of oil fumes and guiding the oil fumes to the side smoke inlet.
[0014] As a further improvement of this utility model, the upper smoke inlet cavity forming the outer covering structure is arranged vertically, and the lower smoke inlet cavity is arranged forward inclined from its bottom to its top, so as to expand the smoke inlet range of the side smoke inlet in the front-back direction.
[0015] As a further improvement of this utility model, the two sides of the upper smoke inlet chamber gradually converge towards the middle from the top to the bottom, and the two sides of the lower smoke inlet chamber gradually converge towards the middle from the bottom to the top, which is used to expand the smoke inlet range of the side smoke inlet in the left and right directions.
[0016] A range hood includes the smoke collection device and a fan device, wherein the fan device is connected to the top of the smoke collection device.
[0017] The beneficial effects of this utility model are:
[0018] The upper smoke inlet chamber, as the smoking unit that draws in oil fumes and flows them into the smoke collection chamber, needs to have a certain thickness to ensure its smoking function. By setting a recess in the upper part of the front plate of the smoke collection chamber, when the upper smoke inlet chamber is closed, it can be gathered into the recess in the upper part of the front plate of the smoke collection chamber, thereby controlling the thickness of the smoke collection device and making the smoke collection device a typical ultra-thin smoke machine in terms of structural form.
[0019] Furthermore, when the upper smoke inlet chamber is open, the smoke collection device can effectively remove small amounts of smoke through the normally open upper smoke inlet. When the upper smoke inlet chamber is closed, it can remove large amounts of smoke through both the normally open upper smoke inlet and the concealed upper smoke inlet. Since the upper smoke inlet chamber extends forward when open, it also expands its smoke coverage area. Therefore, when cooking and producing a small amount of smoke, users do not need to open the upper smoke inlet chamber to remove the smoke. When producing a large amount of smoke, opening the upper smoke inlet chamber increases the number of smoke inlets and expands the smoke coverage area, thus meeting the requirements for removing large amounts of smoke. Attached Figure Description
[0020] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein:
[0021] Figure 1 This is a schematic diagram of the smoke collection device with the upper smoke inlet chamber in the open state, viewed from one angle.
[0022] Figure 2 This is a schematic diagram of the smoke collection device with the upper smoke inlet chamber in the open state, viewed from another angle.
[0023] Figure 3 This is a schematic diagram of the smoke collection device with the upper smoke inlet chamber in a closed state.
[0024] Figure 4 This is a structural diagram of a range hood. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0026] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.
[0027] Implementation Case 1:
[0028] A smoke collection device, as shown in the figure Figures 1-3 The system includes a smoke collection chamber 1. The upper part of the front plate 11 of the smoke collection chamber 1 has an inwardly recessed cavity 12. An upper smoke inlet chamber 2 is rotatably connected to the top of the front plate 11. The structure and shape of the upper smoke inlet chamber 2 match the cavity 12. The rotation of the upper smoke inlet chamber 2 allows it to be in a closed state, retracted within the cavity 12 and partially protruding forward relative to the front plate 11 of the smoke collection chamber 1, and in an open state, extending forward from the front of the smoke collection chamber 1. The upper smoke inlet chamber 2 has two normally open upper smoke inlets 2a on its two sides and a hidden upper smoke inlet 2b on its inner surface. This ensures that when the upper smoke inlet chamber 2 is closed, the normally open upper smoke inlet 2a is open and can draw in fumes, while the hidden upper smoke inlet 2b is closed and cannot draw in fumes. Conversely, when the upper smoke inlet chamber 2 is open, both the normally open upper smoke inlet 2a and the hidden upper smoke inlet 2b are open and can draw in fumes.
[0029] The upper smoke inlet chamber 2, as a smoke-absorbing unit that draws in oil fumes and flows them into the smoke collection chamber 1, needs to have a certain thickness to ensure its smoke-absorbing function. By setting a recess 12 in the upper part of the front plate 11 of the smoke collection chamber 1, the upper smoke inlet chamber 2 can be closed and retracted into the recess 12 in the upper part of the front plate 11 of the smoke collection chamber 1, thereby controlling the thickness of the smoke collection device and making the smoke collection device a typical ultra-thin smoke machine in terms of structural form.
[0030] Furthermore, when the upper smoke inlet chamber 2 is open, the smoke collection device can achieve a small smoke extraction capability through the upper normally open smoke inlet 2a. When the upper smoke inlet chamber 2 is closed, smoke can be extracted through the upper normally open smoke inlet 2a and the upper concealed smoke inlet 2b, thus achieving a large smoke extraction capability. Moreover, since the upper smoke inlet chamber 2 extends forward when open, its smoke extraction coverage area is expanded. Therefore, when cooking and producing a small amount of oily smoke, the user does not need to open the upper smoke inlet chamber 2 to extract the smoke. When producing a large amount of oily smoke, opening the upper smoke inlet chamber 2 increases the number of smoke inlets and expands the smoke extraction coverage area, thereby meeting the requirements for extracting large amounts of oily smoke.
[0031] In this embodiment, a lower smoke inlet chamber 3 is fixed to the lower part of the front plate 11 of the smoke collection chamber 1. The lower smoke inlet chamber 3 protrudes forward relative to the front plate 11. Two normally open lower smoke inlets 3a are provided on the two sides of the lower smoke inlet chamber 3. When the upper smoke inlet chamber 2 is closed or open, the normally open lower smoke inlets 3a are always open and can draw in fumes. This embodiment's smoke collection device, by providing a fixed lower smoke inlet chamber 3 and its two normally open lower smoke inlets 3a on the lower part of the front plate 11, allows the lower normally open smoke inlets 3a to work in conjunction with the upper normally open smoke inlets 2a when the upper smoke inlet chamber 2 is open, thus improving the smoke collection performance and range for small amounts of smoke. When the upper smoke inlet chamber 2 is closed, it can work in conjunction with the upper normally open smoke inlets 2a and the upper concealed smoke inlet 2b, thus improving the smoke collection performance and range for large amounts of smoke.
[0032] In this embodiment, the lower smoke inlet 3 is further provided with a lower concealed smoke inlet 3b at the top. When the upper smoke inlet 2 is closed, the lower concealed smoke inlet 3b is blocked by the bottom of the upper smoke inlet 2. When the upper smoke inlet 2 is open, the lower smoke inlet is open and can draw in oil fumes. This increases the smoke inlet of the smoke collection device when the upper smoke inlet 2 is open, further improving the smoke collection device's performance and range for large amounts of smoke.
[0033] The smoke collection device in this embodiment, through the setting of the upper normally open smoke inlet 2a and the upper concealed smoke inlet 2b in the upper smoke inlet chamber 2, and the setting of the lower normally open smoke inlet 3a and the lower concealed smoke inlet 3b in the lower smoke inlet chamber 3, enables the smoke collection device to achieve multi-dimensional smoke intake when open, and the smoke intake area is more numerous and the coverage is larger, so that the smoke collection chamber 1 has good smoke extraction performance for cooking environments with a large amount of oil fumes.
[0034] In this embodiment, when the upper smoke inlet chamber 2 is closed, the bottom of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 form a complete outer covering structure 4 that covers most of the area of the front plate 11 of the smoke collection chamber 1. More specifically, when the upper smoke inlet chamber 2 is closed, the bottom of the upper smoke inlet chamber 2 and the top of the lower smoke inlet chamber 3 are basically connected, with sufficient gaps between them to avoid interference and collision between the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 during rotation. The smoke collection device is actually composed of three parts: smoke collection chamber 1, upper smoke inlet chamber 2, and lower smoke inlet chamber 3. When the upper smoke inlet chamber 2 is closed, it forms a complete outer covering structure 4 with the lower smoke inlet chamber 3. Thus, the smoke collection device is divided into two parts, smoke collection chamber 1 and outer covering structure 4, in this state. This not only simplifies the structure of the smoke collection device, but also shields the partial structures of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3, thus protecting the structure.
[0035] In this embodiment, when the upper smoke inlet chamber 2 is closed, the two sides of the upper smoke inlet chamber 2 and the corresponding two side walls of the concave cavity 12 fit together. This not only prevents the formation of gaps between the upper smoke inlet chamber 2 and the side walls of the concave cavity 12, thus preventing dust and dirt from accumulating in the gaps, but also makes the smoke collection device look better from the front.
[0036] In this embodiment, the upper normally open smoke inlet 2a extends along the length of the side of the upper smoke inlet chamber 2, and the lower normally open smoke inlet 3a extends along the length of the side of the lower smoke inlet chamber 3. Due to the positional relationship between the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 in the closed state, the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a form a continuous side smoke inlet 4a extending along the length of the side of the outer covering structure 4. This maximizes the smoking range of the two side smoke inlets 4a of the outer covering structure 4, further improves the smoking coverage of the upper smoke inlet chamber 2 in the closed state, and enhances the smoke collection device's performance for small amounts of smoke.
[0037] In this embodiment, the front plate 11 of the smoke collection chamber 1 is inclined forward from its bottom edge to its top edge, so that the oil fumes on both sides of the outer covering structure 4 come into contact with the oil fumes as they rise, and slow down the speed of their continued rise. Under the negative pressure of the side smoke inlet 4a, the oil fumes flow laterally and are sucked in by the side smoke inlet 4a. Therefore, this part forms a smoke guide plate 1c to increase the resistance to the rising oil fumes and guide the oil fumes to the side smoke inlet 4a, further improving the smoke extraction capacity of the upper smoke inlet 2 in the closed state and preventing the oil fumes from escaping.
[0038] In this embodiment, the front plate 11 of the smoke collection chamber 1 is inclined forward from its bottom edge to its top edge, and the lower smoke inlet chamber 3 is inclined forward from its bottom edge to its top edge, forming the upper smoke inlet chamber 2 of the outer covering structure 4, which is vertically arranged. This makes the outer covering structure 4 vertically arranged from its top edge to its middle edge and then inclined from front to back edge at its bottom edge, thus expanding the smoke inlet range of the side smoke inlet 4a in the front-back direction.
[0039] In this embodiment, the two sides of the upper smoke inlet chamber 2 gradually converge towards the middle from the top to the bottom, and the two sides of the lower smoke inlet chamber 3 gradually converge towards the middle from the bottom to the top, thus expanding the smoke inlet range of the side smoke inlet section 4a in the left and right directions.
[0040] The combination of the two implementation cases above enables the two side smoke inlets 4a of the outer cover structure 4 to expand their smoke inlet range in the front-back direction and the left-right direction. Therefore, the smoke collection device has a better smoke inlet range when the upper smoke inlet chamber 2 is closed, thereby preventing the oil fumes from escaping.
[0041] In this embodiment, regarding the specific configuration of the upper concealed smoke inlet 2b, an opening is provided on the inner surface of the upper smoke inlet chamber 2. This opening is close to and forms along the edge of the inner surface of the upper smoke inlet chamber 2. Inside the upper smoke inlet chamber 2, a negative pressure plate 21 is provided at the corresponding opening, and there is a gap between the edge of the negative pressure plate 21 and the edge corresponding to the opening. This gap has negative pressure and forms the upper concealed smoke inlet 2b. Since the negative pressure plate 21 is located inside the upper smoke inlet chamber 2, it defines the opening direction of the gap between the edge of the negative pressure plate 21 and the edge corresponding to the opening. This makes the space between the negative pressure plate 21 and the opening form a negative pressure space. The coverage area of this negative pressure space is the area defined by the opening, thus expanding its smoking range and making the smoking range basically cover the side area. Furthermore, the negative pressure intensity of this negative pressure space is the greatest at the corresponding upper concealed smoke inlet 2b, so that the smoking ability at the edge of the negative pressure space is the strongest, effectively preventing the escape of oil fumes.
[0042] Implementation Case 2:
[0043] A type of range hood, as shown in the reference Figure 4 and combined Figures 1-3 It includes a smoke collection device and a fan device 5. As shown in the implementation example, the smoke collection device is connected to the top of the smoke collection device. The fan device 5 is equipped with a fan. When the fan is started, it creates a negative pressure at the corresponding smoke inlet of the smoke collection device, thereby drawing the oil fumes into the smoke collection chamber 1, then into the fan device 5, and finally discharged through the exhaust pipe (not shown in the diagram).
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A fume collecting device, characterized by, Includes a smoke collection chamber (1), the upper part of the front plate (11) of the smoke collection chamber (1) has an inwardly recessed cavity (12), the top of the front plate (11) of the smoke collection chamber (1) is rotatably connected to an upper smoke inlet cavity (2), the rotation of the upper smoke inlet cavity (2) causes it to have a closed state that is folded into the cavity (12) and partially protrudes forward relative to the front plate (11) of the smoke collection chamber (1), and an open state that extends to the front side of the smoke collection chamber (1); The upper smoke inlet chamber (2) has two normally open upper smoke inlets (2a) on its two sides and a hidden upper smoke inlet (2b) on its inner surface. When the upper smoke inlet chamber (2) is closed, the normally open upper smoke inlet (2a) is open and can draw in oil fumes, while the hidden upper smoke inlet (2b) is closed and cannot draw in oil fumes. When the upper smoke inlet chamber (2) is open, both the normally open upper smoke inlet (2a) and the hidden upper smoke inlet (2b) are open and can draw in oil fumes.
2. The smoke device of claim 1, wherein, The lower part of the front plate (11) of the smoke collection chamber (1) is fixed with a lower smoke inlet chamber (3) that protrudes forward relative to the front plate (11). The two sides of the lower smoke inlet chamber (3) are provided with lower normally open smoke inlets (3a). When the upper smoke inlet chamber (2) is in the closed state or the open state, the lower normally open smoke inlets (3a) are in the open state and can suck in oil fumes.
3. The air management device of claim 2, wherein, The lower smoke inlet (3) is provided with a lower hidden smoke inlet (3b) at the top. When the upper smoke inlet (2) is closed, the lower hidden smoke inlet (3b) is blocked by the bottom of the upper smoke inlet (2). When the upper smoke inlet (2) is open, the lower hidden smoke inlet (3b) is open and can draw in oil fumes.
4. The air management device of claim 2, wherein, When the upper smoke inlet chamber (2) is in the closed state, the positional relationship between the bottom of the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) makes the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) form a complete outer covering structure (4) that covers most of the area of the front plate (11) of the smoke collection chamber (1).
5. The air management device of claim 2, wherein, When the upper smoke inlet chamber (2) is in the closed state, the two sides of the upper smoke inlet chamber (2) and the corresponding two side walls of the concave cavity (12) are in contact.
6. The air management device of claim 4, wherein, The upper normally open smoke inlet (2a) extends along the length direction of the side of the upper smoke inlet cavity (2), and the lower normally open smoke inlet (3a) extends along the length direction of the side of the lower smoke inlet cavity (3), so that the upper normally open smoke inlet (2a) and the lower normally open smoke inlet (3a) form a continuous side smoke inlet (4a) extending along the length direction of the side of the outer covering structure (4).
7. The air management device of claim 6, wherein, The front plate (11) of the smoke collection chamber (1) is inclined forward from its bottom edge to its top edge, such that the portion of the front plate (11) located on both sides of the outer covering structure (4) forms a smoke guide plate (1c) for increasing the resistance to the rising of oil fumes and guiding the oil fumes to the side smoke inlet (4a).
8. The air management device of claim 6, wherein, The upper smoke inlet chamber (2) forming the outer covering structure (4) is arranged vertically, and the lower smoke inlet chamber (3) is arranged forward from its bottom to its top to expand the smoke inlet range of the side smoke inlet (4a) in the front-back direction.
9. The air management device of claim 6, wherein, The two sides of the upper smoke inlet chamber (2) gradually converge towards the middle from the top to the bottom, and the two sides of the lower smoke inlet chamber (3) gradually converge towards the middle from the bottom to the top, which is used to expand the smoke inlet range of the side smoke inlet section (4a) in the left and right directions.
10. A range hood characterized by, Includes the smoke collection device and the fan device (5) as described in any one of claims 1-9, wherein the fan device (5) is connected to the top of the smoke collection device.