Smoke exhaust device and range hood

Abstract

The utility model provides a smoke exhaust device and a range hood, the smoke exhaust device comprises a smoke exhaust pipeline and a filter module arranged in the smoke exhaust pipeline, the smoke exhaust pipeline is a bent pipeline, and the filter module is arranged at the bent part of the smoke exhaust pipeline. A smoke inlet of the smoke exhaust pipeline is communicated with an air outlet of a fan device of the range hood and is used for sucking oil smoke treated by the fan device, and the oil smoke is discharged indoors or outdoors through a smoke outlet of the smoke exhaust pipeline after being treated by the bent pipeline and the internal filtering module. According to the scheme, the bent smoke exhaust pipeline is adopted, the smoke can be buffered and cached by means of the bending characteristic, part of the smoke can be directly deposited in the smoke exhaust pipeline, in addition, the filtering module is arranged on the bent portion of the smoke exhaust pipeline, and therefore the filtering effect is improved. And the filtering module can realize adsorption of more oil smoke by blocking the oil smoke through the bent part.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and more specifically, to a smoke exhaust device and a range hood. Background Technology

[0002] In existing range hoods, to effectively extract cooking fumes, a pre-adsorption module, such as an adsorption carbon mesh, is commonly used. This module is positioned at the air inlet, and the fumes are adsorbed by the module before flowing through the impeller and being discharged. While this design is relatively simple, the large volume of fumes at the air inlet, coupled with the fact that the fumes are not filtered before entering, results in a short lifespan for the adsorption module, requiring frequent replacement and impacting its performance.

[0003] In existing technologies, multiple adsorption modules are set inside the range hood to achieve maximum adsorption of oil fumes. However, the stacking of multiple adsorption modules can cause channeling in the pipes, and a large amount of oil fumes accumulate on the adsorption modules, causing blockages and preventing the oil fumes from being discharged, thereby reducing the adsorption efficiency of the range hood. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a smoke exhaust device and a range hood, so as to achieve effective adsorption of oil fumes while avoiding the problem of excessive oil fumes adsorbed on the adsorption module, thus affecting the adsorption effect.

[0005] In the first aspect, this utility model provides a smoke exhaust device for use in a range hood, which also includes a fan device;

[0006] The smoke exhaust device includes a smoke exhaust duct and a filter module installed inside the smoke exhaust duct. The smoke exhaust duct is a curved duct, and the filter module is installed at the curved part of the smoke exhaust duct.

[0007] The smoke inlet of the exhaust duct is connected to the air outlet of the ventilation fan device, which is used to draw in the oil fumes that have been processed by the fan device. After the oil fumes pass through the curved duct and the internal filter module, they are discharged to the indoor or outdoor area through the exhaust outlet of the exhaust duct.

[0008] In an optional embodiment, the exhaust duct includes at least one set of ducts, each set of ducts including multiple curved ducts, the multiple curved ducts being connected in sequence, and the curved ducts having different curvatures.

[0009] In optional embodiments, the bending shape of each curved pipe is C-shaped, S-shaped, Z-shaped, wavy, or spiral.

[0010] In an optional implementation, each of the curved pipes is provided with a connecting component at its opposite ends, and each pair of adjacent curved pipes is connected by the connecting component.

[0011] In an optional embodiment, the connecting assembly includes an interface protrusion at one end of each curved pipe and an interface groove at the other end.

[0012] The connection is achieved when the protrusion of one of the two adjacent bends is inserted into the groove of the other bend.

[0013] In an optional embodiment, a sealing ring is provided around the protrusion of each curved pipe interface to seal the connection between two adjacent curved pipes.

[0014] In an optional implementation, multiple curved pipes in each group of pipes are integrally formed.

[0015] In an optional implementation, the cross-sectional shape of the filter module along the axial direction of the exhaust duct is trapezoidal.

[0016] In an optional implementation, there are multiple filter modules, and the exhaust duct includes multiple bends, with multiple filter modules disposed at the multiple bends of the exhaust duct.

[0017] Secondly, this utility model provides a range hood, including a range hood platform, a heating device, a fan device, and a smoke exhaust device according to any one of the aforementioned embodiments;

[0018] The heating device is embedded in the range hood countertop;

[0019] The fan unit is located below the range hood platform, and the air intake of the fan unit is located on the surface of the range hood platform;

[0020] The smoke inlet of the smoke exhaust device is connected to the air outlet of the ventilation fan device.

[0021] This utility model provides a smoke extraction device and a range hood. The smoke extraction device includes a smoke extraction duct and a filter module disposed within the smoke extraction duct. The smoke extraction duct is curved, and the filter module is located at the curved section of the smoke extraction duct. The smoke inlet of the smoke extraction duct is connected to the air outlet of the fan device of the range hood, used to draw in the cooking fumes processed by the fan device. After passing through the curved duct and the internal adsorption module, the cooking fumes are discharged to the indoor or outdoor environment through the smoke exhaust outlet of the smoke extraction duct. In this design, the curved smoke extraction duct utilizes its curvature to buffer and buffer the cooking fumes, allowing some of the fumes to directly deposit inside the smoke extraction duct. Furthermore, the adsorption module is located at the curved section of the smoke extraction duct, and the curvature obstructs the cooking fumes, enabling the adsorption module to adsorb more fumes. This achieves effective adsorption of cooking fumes while avoiding the problem of excessive adsorption on the adsorption module, which would affect the adsorption effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a range hood provided in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the smoke exhaust device and the fan device provided in the embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the smoke exhaust pipe provided in an embodiment of the present utility model;

[0026] Figure 4 Another structural schematic diagram of the smoke exhaust duct provided in this embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the structure of the filter module provided in this embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the cross-sectional shape of the filter module provided in an embodiment of the present invention.

[0029] Icons: 1-Range hood; 11-Exhaust device; 111-Smoke inlet; 112-Exhaust outlet; 113-Exhaust duct; 1131-Bent duct; 1132-Interface protrusion; 1133-Interface groove; 1134-Sealing ring; 114-Filter module; 12-Range hood countertop; 13-Fan unit; 131-Air intake; 14-Heating device. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] In the description of this utility model, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Figure 1 The diagram shown is a structural schematic of a range hood 1 provided in an embodiment of the present invention. The range hood 1 includes a range hood countertop 12, a fan device 13, a heating device 14, and a smoke exhaust device 11. When installed, the range hood countertop 12 is generally embedded in the cooktop surface, with the range hood countertop 12 located on top, and the fan device 13, heating device 14, and smoke exhaust device 11 located below the range hood countertop 12.

[0034] Specifically, the heating device 14 is embedded in the range hood countertop 12, with one part of the heating device 14 located below the range hood countertop 12 and the other part located on the surface of the range hood countertop 12. The portion of the heating device 14 located below the range hood countertop 12 generates heat and provides that heat to the other portion of the heating device 14 located on the surface of the range hood countertop 12. When cooking is required, cookware or similar items can be placed on the heating device 14 on the surface of the range hood countertop 12. After the heating device 14 is turned on, it provides heat to the cookware, thereby providing heat to the food inside the cookware for cooking.

[0035] A fan device 13 is located below the range hood countertop 12. The fan device 13 includes an air intake 131 and an air outlet (not shown in the figure). The air intake 131 of the fan device 13 is located on the surface of the range hood countertop 12. When the fan device 13 is turned on, cooking fumes, water vapor, etc., are drawn into the interior of the fan device 13 from the air intake 131 under the negative pressure generated by the fan device 13.

[0036] An adsorption module (not shown in the figure) is also installed inside the fan unit 13. This adsorption module can be, for example, activated carbon. The adsorption module can effectively adsorb most of the grease present in the oil fumes, so that the adsorbed oil fumes can meet the relevant grease separation standards.

[0037] The smoke exhaust device 11 is connected to the air outlet of the fan device 13. The oil fumes processed by the fan device 13 are discharged from the air outlet of the fan device 13 and enter the smoke exhaust device 11. After being processed by the smoke exhaust device 11, including filtering the oil fumes and removing the odor of the oil fumes, they are discharged from the smoke exhaust device 11.

[0038] To ensure the most effective adsorption of cooking fumes and maintain indoor and outdoor air quality, the smoke exhaust device 11 has been improved in this invention. For details, please refer to the relevant documentation. Figure 2 This utility model provides a smoke exhaust device 11, which includes a smoke exhaust pipe 113 and a filter module 114 disposed within the smoke exhaust pipe 113. The smoke exhaust pipe 113 is a curved pipe, and the filter module 114 is disposed at the curved portion of the smoke exhaust pipe 113.

[0039] The smoke exhaust duct 113 includes a smoke inlet 111 and a smoke outlet 112. The smoke inlet 111 of the smoke exhaust duct 113 is connected to the air outlet of the ventilation fan device 13. The smoke exhaust duct 113 is used to draw in the oil fumes that have been treated by the fan device 13. After the oil fumes pass through the curved pipe and the internal filter module 114, they are discharged to the indoor or outdoor environment through the smoke outlet 112 of the smoke exhaust duct 113. Figure 2 The arrows in the diagram indicate the direction of oil fume flow in the exhaust duct 113.

[0040] In this embodiment, the exhaust duct 113 is curved, that is, non-linear, and can be spiral, wavy, Z-shaped, C-shaped, S-shaped, etc., without limitation. The curved exhaust duct 113 has a curved section, which can be understood as a part of the exhaust duct 113 where the tangential direction changes continuously, such as the bend of an S-shape, the bend of a C-shape, etc.

[0041] After the fumes enter the exhaust duct 113, the curved shape of the duct can buffer and slow down the flow of fumes. Compared to a straight duct, the fumes are more easily blocked by the inner wall of the curved exhaust duct 113, resulting in some fumes remaining at the curved section of the duct. These fumes can then flow into the oil cup. Therefore, the curved shape of the exhaust duct 113 can filter some of the fumes to a certain extent, causing some fumes to be directly deposited inside the exhaust duct 113.

[0042] Based on this, in this embodiment, a filter module 114 is provided inside the exhaust duct 113, and the filter module 114 is located at the bend of the exhaust duct 113. It is understood that the bend of the exhaust duct 113 is more likely to block fumes, and therefore, more fumes tend to accumulate at the bend. By placing the filter module 114 at the bend, the accumulated fumes can be absorbed more thoroughly and in a concentrated manner, improving the fume adsorption efficiency.

[0043] In this embodiment, based on the fact that the fan device 13 filters most of the grease in the fumes, the filter module 114 in the exhaust device 11 can further adsorb and filter out the fine oil and water aerosol molecules in the fumes, and can also deodorize the irritating odor in the fumes.

[0044] Therefore, the exhaust device 11 provided in this embodiment adopts a curved exhaust pipe 113. The curvature of the pipe buffers and caches the fumes, allowing some of the fumes to deposit directly within the exhaust pipe 113. Furthermore, the filter module 114 is positioned at the curved section of the exhaust pipe 113. The curved section effectively blocks and accumulates the fumes, enabling the filter module 114 to adsorb more fumes. This achieves effective fumes adsorption while avoiding the problem of excessive fumes adsorbed on the filter module 114, which would negatively impact the adsorption effect.

[0045] In this embodiment, based on the shape characteristics of the exhaust pipe 113, the exhaust pipe 113 can be divided into at least one group of pipes, wherein each group of pipes includes multiple curved pipes 1131, and the multiple curved pipes 1131 are connected in sequence. Here, "multiple" can be understood as two or more.

[0046] The number of pipe sets can be determined based on the size of the installation space below the stove for installing the range hood 1. For example, one set of pipes, two sets of pipes, etc. are not limited.

[0047] Each curved pipe 1131 can be made of materials such as stainless steel, aluminum or galvanized steel.

[0048] For each group of pipes, in one possible implementation, the bending shapes of the multiple curved pipes 1131 included in each group can be different; for example, some can be C-shaped, some S-shaped, etc. In this way, the different bending shapes of the curved pipes 1131 can be used to comprehensively buffer the oil fumes, effectively improving the filtration effect. Furthermore, using curved pipes 1131 with different bending shapes can adapt to installation space, maximizing the overall length of the exhaust pipe 113 within limited installation space, ensuring maximum filtration of oil fumes.

[0049] Figure 3 The diagram above illustrates a schematic of the smoke exhaust duct 113 provided in this embodiment. Figure 3 The central exhaust duct 113 includes a set of ducts, which includes two curved ducts 1131, namely a C-shaped duct and an S-shaped duct, with the S-shaped duct connected after the C-shaped duct. That is, the C-shaped duct includes the smoke inlet 111 of the exhaust duct 113, and the S-shaped duct includes the smoke outlet 112 of the exhaust duct 113.

[0050] After entering the exhaust duct 113, the cooking fumes first pass through a C-shaped pipe. The bend in the C-shaped pipe buffers and cushions the fumes, causing some to settle there. The remaining fumes then enter an S-shaped pipe, where the bend also buffers and cushions them, further reducing the amount of cooking fumes in the exhaust gas from the exhaust port 112.

[0051] In another possible implementation, the bending shapes of the multiple curved pipes 1131 included in each group of pipes can also be the same. For example, the shapes of the multiple curved pipes 1131 can all be C-shaped, or all S-shaped, etc. This way, by using multiple curved pipes 1131 with the same bending shape, the complexity of manufacturing the smoke exhaust pipe 113 can be reduced and the production efficiency of the smoke exhaust pipe 113 can be improved.

[0052] In one possible implementation of this embodiment, the multiple curved pipes 1131 in each group of pipes can be integrally formed. This ensures that the exhaust pipe 113 as a whole has good sealing performance, preventing leakage of oil fumes.

[0053] In another possible implementation, the multiple curved pipes 1131 in each group of pipes can also be spliced ​​together. For example, each curved pipe 1131 has a connecting component at its opposite ends, and every two adjacent curved pipes 1131 are connected by the connecting component.

[0054] By using connecting components to splice multiple curved pipes 1131, compared to the one-piece molding method, the manufacturing difficulty of the exhaust pipe 113 can be reduced, and the diversity of the shape of the exhaust pipe 113 can be increased. In practical applications, appropriate curved pipes 1131 can be selected for splicing according to the specific conditions of the installation space, ensuring the rational use of the installation space.

[0055] The connecting components can be, for example, mating external and internal threads, flat flanges, socket connection components, compression fitting connection components, etc.

[0056] For example, each of the curved pipes 1131 has an external thread at one end and an internal thread at the other end. When connecting two curved pipes 1131, the externally threaded end of one curved pipe 1131 is inserted into the internally threaded end of the other curved pipe 1131, and the two curved pipes 1131 are fastened together by rotation.

[0057] like Figure 4 As shown, in one implementation of this embodiment, the connecting component includes an interface protrusion 1132 at one end of each curved pipe 1131 and an interface groove 1133 at the other end. The interface protrusion 1132 of one of the two adjacent curved pipes 1131 is connected after being inserted into the interface groove 1133 of the other curved pipe 1131.

[0058] Thus, according to the connection sequence of each curved pipe 1131, the interface protrusions 1132 of the two curved pipes 1131 can be inserted into the interface grooves 1133 in sequence to form the exhaust pipe 113.

[0059] Considering that when using the splicing method, there may be a problem of oil fume leakage at the connection position of two adjacent curved pipes 1131, therefore, in this embodiment, a sealing ring 1134 is also provided on the periphery of the interface protrusion 1132. The sealing ring 1134 is used to seal the connection position of two adjacent curved pipes 1131.

[0060] That is, after two adjacent curved pipes 1131 are spliced ​​together, the sealing ring 1134 is fitted at the connection position of the two curved pipes 1131 to ensure that the connection position is sealed.

[0061] In this embodiment, the sealing ring 1134 can be made of a flexible material, such as nitrile rubber, silicone rubber, or neoprene rubber. Using a flexible material for the sealing ring 1134 ensures a tight seal at the connection point, preventing leakage of oil fumes.

[0062] Please refer to it again. Figure 2 In this embodiment, the filter module 114 located inside the exhaust duct 113 is multiple ( Figure 2 (Two are schematically shown in the diagram). The exhaust duct 113 includes multiple bends, and multiple filter modules 114 are disposed at the multiple bends of the exhaust duct 113. In this way, the multiple filter modules 114 can successively adsorb the oil fumes in the exhaust duct 113, thereby minimizing the oil fume content in the gas finally discharged from the exhaust port 112.

[0063] In this embodiment, the filter module 114 can use activated carbon blocks to achieve both oil fume adsorption and deodorization of the irritating odor of the oil fume.

[0064] In the existing straight flue, when multiple filter modules 114 are installed, channeling is likely to occur between the multiple filter modules 114. Furthermore, since the multiple filter modules 114 are also arranged in a straight line, the increased number of filter modules 114 also increases the air resistance of the flue, resulting in poor circulation of oil fumes and thus affecting the air circulation effect.

[0065] In this embodiment, since each filter module 114 is located at each curved part, the flow path of the oil fume is curved due to the existence of the curved part, and the filter modules 114 are not arranged in a straight line. In comparison, the air resistance of the flue can be reduced, the smooth flow of oil fume can be ensured, and the smoke extraction effect can be improved, thereby realizing the air circulation of the range hood 1.

[0066] Please refer to the following: Figure 5 In this embodiment, the cross-sectional shape of the filter module 114 along the axial direction of the exhaust pipe 113 is trapezoidal. That is, it can be understood that the filter module 114 includes two surfaces that are opposite each other and four sides located on the periphery. The two sides close to the inner wall of the exhaust pipe 113 are vertical surfaces, and the other two sides are inclined surfaces.

[0067] When cooking fumes pass through the filter module 114, the two inclined surfaces are located in the direction of the fume flow path, thus their adsorption effect on the fumes is relatively greater. Compared to setting the filter module 114 with all four sides being vertical, the area of ​​the inclined surfaces is larger for the same width, which is equivalent to increasing the effective adsorption area of ​​the filter module 114, thereby improving the adsorption effect on cooking fumes.

[0068] like Figure 6 The figure shows a cross-section of the filter module 114 along the axis of the exhaust duct 113. The cross-section is trapezoidal in shape. The side can be understood as the length of the effective filter surface of the filter module 114, which is L1. The side with length L can be understood as the side of the vertical plane. As can be seen from the figure, with the same width of the effective filter surface, when its length is L1, the area of ​​the effective filter surface is larger, and its adsorption effect is better.

[0069] In summary, the exhaust device 11 provided in this embodiment employs a curved exhaust duct 113, such as a C-shaped or S-shaped curved duct 1131. The curved characteristics of the duct serve to buffer and cache the oil fumes, allowing some of the oil fumes to directly deposit within the exhaust duct 113. The exhaust duct 113, to a certain extent, functions as a filter module 114. Furthermore, by placing the filter module 114 at the curved portion of the exhaust duct 113, the curved portion's obstruction of the oil fumes allows the filter module 114 to adsorb more oil fumes. Moreover, using multiple filter modules 114 for adsorption avoids increasing the air resistance within the exhaust duct 113. This achieves effective oil fume adsorption while preventing excessive oil fume adsorption on the filter module 114, thus preventing the adsorption effect from being compromised.

[0070] Furthermore, the range hood 1 provided in this embodiment, based on the curved exhaust pipe 113 in the range hood 1 and the filter module 114 provided at the curved part of the exhaust pipe 113, enables the range hood 1 to have a good oil fume adsorption effect, thereby improving the user experience.

[0071] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A smoke extraction device, characterized in that, Applied to range hoods, the range hoods also include a fan device; The smoke exhaust device includes a smoke exhaust pipe and a filter module disposed in the smoke exhaust pipe. The smoke exhaust pipe is a curved pipe, and the filter module is disposed at the curved part of the smoke exhaust pipe. The smoke inlet of the exhaust duct is connected to the air outlet of the fan device, and is used to draw in the oil fumes processed by the fan device. After the oil fumes pass through the curved pipe and the internal filter module, they are discharged to the indoor or outdoor area through the exhaust outlet of the exhaust duct.

2. The smoke extraction device according to claim 1, characterized in that, The exhaust duct includes at least one set of ducts, each set of ducts including multiple curved ducts, the multiple curved ducts being connected in sequence, and each curved duct having a different curvature.

3. The smoke extraction device according to claim 2, characterized in that, The bending shape of each of the aforementioned curved pipes is C-shaped, S-shaped, Z-shaped, wavy, or spiral.

4. The smoke extraction device according to claim 2, characterized in that, Each of the curved pipes has a connecting component at its opposite ends, and each pair of adjacent curved pipes is connected by the connecting component.

5. The smoke extraction device according to claim 4, characterized in that, The connecting assembly includes an interface protrusion at one end of each of the curved pipes and an interface groove at the other end. The interface protrusion of one of the two adjacent curved pipes is connected after being inserted into the interface groove of the other curved pipe.

6. The smoke extraction device according to claim 5, characterized in that, Each of the curved pipes is further provided with a sealing ring around the interface protrusion to seal the connection position of two adjacent curved pipes.

7. The smoke extraction device according to claim 2, characterized in that, The multiple curved pipes in each group of pipes are integrally formed.

8. The smoke extraction device according to claim 1, characterized in that, The cross-sectional shape of the filter module along the axial direction of the exhaust duct is trapezoidal.

9. The smoke extraction device according to claim 1, characterized in that, The filter module is multiple, and the exhaust pipe includes multiple bends, with the multiple filter modules disposed at the multiple bends of the exhaust pipe.

10. A range hood, characterized in that, It includes a range hood platform, a heating device, a fan device, and a smoke exhaust device as described in any one of claims 1-9; The heating device is embedded in the surface of the range hood; The fan device is located below the range hood platform, and the air intake of the fan device is located on the surface of the range hood platform. The smoke inlet of the smoke exhaust device is connected to the air outlet of the fan device.

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