A range hood

Abstract

The application discloses an extractor hood. The extractor hood comprises a box body and an air inlet part. The box body is formed with a containing cavity. The box body comprises a smoke suction surface. The smoke suction surface is provided with an opening which is communicated with the containing cavity. The air inlet part is protruded at the opening. The air inlet part is provided with an air inlet which is communicated with the containing cavity. The air inlet part of the application is protruded at the smoke suction surface. The smoke gas enters the containing cavity from the air inlet. The smoke gas enters the containing cavity to make the oil drops at the top end of the air inlet part flow back to the inside of the extractor hood. Thus, the amount of the smoke gas at the top end of the air inlet part does not need to be reduced. Therefore, the necessary air volume of the extractor hood can be reduced.

Description

Technical Field

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

[0002] With the improvement of living standards, people's demand for various household appliances is also increasing. Among them, range hoods are important appliances widely used in kitchens. The performance of a range hood directly affects the kitchen environment and thus people's health. With the development of modern science and technology, range hoods will have a wider range of applications, making high-performance range hoods particularly important. Low noise performance has always been a goal pursued by the range hood industry.

[0003] For the same product, although a larger air volume can make the range hood smoke better, it will also bring more noise and cause indoor air to be expelled quickly, resulting in insufficient air supply and back smell. Summary of the Invention

[0004] This application provides a range hood that improves the smoke extraction effect by designing the air intake channel, enabling it to achieve a better smoke extraction effect with a smaller air volume.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a range hood, which includes: a housing and an air inlet, wherein the housing forms a cavity, the housing includes a smoke-absorbing surface, and the smoke-absorbing surface has an opening communicating with the cavity; the air inlet protrudes from the opening and has an air inlet communicating with the cavity.

[0006] Furthermore, the distance between the side of the air inlet section with the air inlet and the smoke extraction surface gradually decreases along the direction from the front end to the rear end of the air inlet section.

[0007] Furthermore, the distance between the top of the air intake and the stove surface gradually increases from the front end to the rear end of the air intake.

[0008] Furthermore, there is a first distance between the bottom of the air inlet and the stove surface, and a second distance between the end of the air inlet away from the accommodating cavity and the wall surface, wherein the difference between the first distance and the second distance is less than 180mm.

[0009] Furthermore, the distance between the lower edge of the air inlet and the stove surface is less than or equal to 550mm.

[0010] Furthermore, the air intake section includes: an oil baffle and a first side plate, a second side plate, and a mesh plate connected to one side of the oil baffle, wherein one end of the mesh plate is connected to the first side plate, the other end of the mesh plate is connected to the second side plate, and the mesh plate is provided with a plurality of air inlets communicating with the accommodating cavity.

[0011] Furthermore, the upper end of the mesh plate is connected to the front end of the oil baffle, and the bottom end of the mesh plate is connected to the lower edge of the opening.

[0012] Furthermore, the distance between the connection point of the mesh plate and the oil baffle plate and the edge of the oil baffle plate is greater than 0; the distance between the connection point of the first side plate and the second side plate and the oil baffle plate and the edge of the oil baffle plate is greater than 0.

[0013] Furthermore, the oil baffle is movably connected to the housing to open or block the opening. The oil baffle has an open state and a closed state. When the air inlet is in the closed state, the oil baffle blocks the opening, and the mesh plate, the first side plate and the second side plate are housed in the receiving cavity. When the air inlet is in the open state, the mesh plate, the first side plate and the second side plate protrude from the opening.

[0014] Furthermore, when the oil baffle is in the open state, the distance between the front end of the oil baffle and the wall is less than or equal to 400mm.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, the range hood provided in this application includes a housing and an air inlet. The housing forms a receiving cavity, which is part of the range hood's air duct. The housing includes a smoke extraction surface with an opening communicating with the receiving cavity. The air inlet protrudes from the opening and has an air inlet communicating with the receiving cavity. Smoke enters the range hood through the air inlet of the air inlet. After oil accumulates on the top of the air inlet, the oil droplets fall back into the range hood instead of dripping directly. Therefore, it is not necessary to reduce the amount of smoke reaching the top of the air inlet, allowing the required airflow of the range hood to be smaller. The range hood of this application can achieve the same smoke extraction effect with a smaller airflow, thereby reducing noise and minimizing issues such as insufficient air supply and backflow odors. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the range hood provided in this application;

[0018] Figure 2 This is a structural schematic diagram of another state of the range hood provided in this application.

[0019] Figure descriptions: 10. Range hood; 11. Housing; 13. Air inlet; 112. Opening; 111. Top plate; 112. Smoke extraction plate; 113. First baffle; 114. Second baffle; 115. Bottom plate; 134. Oil baffle; 133. Mesh plate; 131. First side plate; 132. Second side plate; 103. Air inlet; 101. Smoke extraction surface. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The purpose of a range hood is to collect and expel cooking fumes from the kitchen. Its main working principle is that by expelling air from the kitchen, the fumes are carried along with the airflow, thus being collected and expelled through the range hood. While a larger airflow improves the fume extraction effect, it also generates more noise and causes insufficient air intake and backflow of odors due to the rapid expulsion of indoor gases. In other words, traditional side-draft range hoods require a larger airflow at the air inlet to reduce or eliminate contact between the fumes and the inner surface of the baffle plate, resulting in increased perceived noise during operation.

[0024] To address the aforementioned problems, this application provides a range hood with an air inlet protruding from the smoke extraction surface. During operation, smoke enters the cavity formed by the air inlet through the air vent. Oil droplets may accumulate on the top of the air inlet; these droplets flow back into the range hood instead of dripping directly. Therefore, the range hood does not need to reduce the amount of smoke reaching the top of the air inlet during design, allowing for a smaller airflow. The range hood provided by this application achieves superior smoke extraction with a smaller airflow, reducing noise and minimizing issues such as insufficient air supply and backflow odors.

[0025] Please see Figure 1 As shown, Figure 1 This is a schematic diagram of an embodiment of a range hood provided in this application. The range hood 10 includes a housing 11 and an air inlet 13 disposed on the housing 11.

[0026] Specifically, the housing 11 has a receiving cavity (not shown in the figure), which is part of the air duct of the range hood 10. A fan (not shown in the figure) is installed in the air duct, and the fan draws the smoke out through the receiving cavity. The configuration of the fan is within the scope of what those skilled in the art can understand, and will not be described in detail here.

[0027] exist Figure 1 In the illustrated embodiment, the housing 11 includes a top plate 111, a first baffle 113, a second baffle 114, a smoke extraction plate 112, and a bottom plate 115. The top plate 111, first baffle 113, second baffle 114, smoke extraction plate 112, and bottom plate 115 form a receiving cavity. The first baffle 113 and second baffle 114 are trapezoidal in shape. In other embodiments, the housing 11 may have other shapes; for example, the housing 11 may not include the bottom plate 115, and the first baffle 113 and second baffle 114 may be triangular in shape.

[0028] Furthermore, the smoke extraction plate 112 includes a smoke extraction surface 101, which faces the stovetop surface. Figure 1 In the illustrated embodiment, the smoking surface 101 is a plane. In other embodiments, the smoking surface 101 may also be a curved surface, or a plane that is bent and connected, etc.

[0029] exist Figure 1In the illustrated embodiment, when the range hood 10 is installed, the smoke extraction surface 101 is a downwardly sloping plane, and the distance between the smoke extraction surface 101 and the cooktop gradually increases in the direction away from the wall. That is, the distance between the front end of the smoke extraction surface 101 and the cooktop is greater than the distance between the rear end of the smoke extraction surface 101 and the cooktop. This increases the user's operating space, and allows for better observation and cleaning of the range hood. In other embodiments, the smoke extraction surface 101 can also be inverted, meaning the distance between the smoke extraction surface 101 and the cooktop gradually decreases in the direction away from the wall. This increases the negative pressure area generated by the range hood, thereby improving the smoke extraction effect.

[0030] like Figure 1 As shown, the smoke extraction surface 101 has an opening 102 that communicates with the receiving cavity. An air inlet 13 is located at the opening 102. The air inlet 13 protrudes from the smoke extraction surface 101. The air inlet 13 forms a cavity (not shown in the figure) that communicates with the receiving cavity, and an air inlet 103 communicates with the cavity. Smoke enters the cavity and receiving cavity through the air inlet 103. As the smoke enters the cavity through the air inlet 103, oil droplets adhere to the top (inner top wall) of the air inlet 13. The oil on the top of the air inlet 13 does not drip out; the oil droplets flow back into the receiving cavity. Therefore, there is no need to worry about oil dripping from the oil-blocking part at the top of the air inlet 13, allowing the range hood 10 to have a smaller airflow, thus reducing noise.

[0031] Furthermore, the outer edge of the air inlet 13 abuts against the edge of the opening 102 to seal the opening 102, ensuring that fumes can only enter the range hood 10 through the air inlet 103 on the protruding air inlet 13. The air inlet 13 can be fixedly connected to the housing 11 or movably connected. For a specific embodiment where the air inlet 13 is movably connected to the housing 11, please refer to the description below. When the air inlet 13 is fixedly connected to the housing 11, it can be integrally formed with the housing 11 to improve the structural stability of the range hood 10.

[0032] Optionally, such as Figure 1As shown, the angle between the side of the air inlet 13 with the air inlet 103 and the smoke extraction surface 101 is an acute angle. The distance between the side of the air inlet 13 with the air inlet 103 and the smoke extraction surface 101 gradually decreases from the front end to the rear end of the air inlet 13. That is, the side of the air inlet 13 with the air inlet 103 is inclined downwards. In this way, more smoke can enter the air inlet 103, and the oil droplets on the top of the air inlet 13 can flow back to the inside of the range hood 10 through the side with the air inlet 103. Specifically, an air intake mesh can be provided on the side of the air inlet 13 with the air inlet 103, so that the oil droplets on the top of the range hood 10 can flow back to the inside of the range hood 10 through the air intake mesh. Here, the front end of the air inlet 13 refers to the end of the air inlet 13 away from the wall when the range hood 10 is installed, and the rear end of the air inlet 13 is the end of the air inlet 13 close to the wall.

[0033] When the range hood 10 is installed, the distance between the top of the air inlet 13 and the cooktop surface increases gradually from the front to the rear of the air inlet 13; that is, the top of the air inlet 13 is inclined downwards. Specifically, the angle between the top of the air inlet 13 and the horizontal plane is greater than or equal to 5 degrees. In this way, oil droplets on the inner top wall of the air inlet 13 can flow along the inclined surface to the air inlet mesh, and then enter the interior of the range hood through the air inlet mesh.

[0034] When the range hood 10 is working, the smoke enters the cavity of the air intake section 13 through the air inlet 103. The smoke rises to the top of the cavity, where oil droplets are formed. Under the influence of gravity, the oil droplets flow to the air intake screen and then return to the interior of the range hood 10 with the air intake screen. The range hood 10 of this application has a good smoke extraction effect. Moreover, after the smoke enters the air intake section 13 through the air inlet 103, it does not drip out. Therefore, it is not necessary to reduce the amount of smoke reaching the top of the air inlet 103. The air volume of the range hood 10 can be designed to be smaller, that is, the necessary air volume of the range hood 10 can be reduced, thereby reducing the noise generated by the range hood 10.

[0035] Optionally, in Figure 1 In the illustrated embodiment, the air inlet 13 includes an oil baffle 134, a mesh plate 133, a first side plate 131, and a second side plate 132. The oil baffle 134 is located at the top of the opening 102 and is connected to the housing 11. The mesh plate 133, the first side plate 131, and the second side plate 132 are connected to one side of the oil baffle 134. The mesh plate 133, the first side plate 131, the second side plate 132, and the oil baffle 134 form a cavity that communicates with the receiving cavity formed by the housing 11. The mesh plate 133 has an air inlet 103 that communicates with the receiving cavity, and the air inlet 103 is elongated.

[0036] exist Figure 1In the illustrated embodiment, the oil baffle 134 is located at the top of the opening 102. The distance between the oil baffle 134 and the cooktop surface gradually increases from the front end to the rear end of the air inlet 13, meaning the oil baffle 134 is inclined downwards. When the range hood 10 is in operation, the angle between the oil baffle 134 and the horizontal plane is not less than 5 degrees. For example, the angle between the oil baffle 134 and the horizontal plane is 5 degrees, 6 degrees, or 10 degrees. This allows the oil baffle 134 to have a certain inclination, enabling oil droplets on the oil baffle 134 to flow towards the connection between the oil baffle 134 and the mesh plate 133 under the influence of gravity, allowing the oil droplets to flow back into the interior of the range hood 10 through the mesh plate 133.

[0037] One side of the mesh plate 133 is connected to the oil baffle 134, and the other side of the mesh plate 133 abuts against the edge of the opening 102. The mesh plate 133 is also tilted downward so that the oil droplets can flow back into the receiving cavity.

[0038] Specifically, the fumes are drawn into the cavity through the air inlet 103 of the mesh plate 133 and then extracted from the containment cavity. Some of the rising fumes come into contact with the oil baffle 134, thus forming oil droplets on the oil baffle 134. Under the influence of gravity, the oil droplets on the oil baffle 134 move towards the connection between the oil baffle 134 and the mesh plate 133, and then move along the mesh plate 133 into the interior of the range hood 10, preventing the oil droplets from dripping directly onto the cooktop. This range hood 10 has a good smoke extraction effect, and because the design of the range hood 10 does not require reducing the amount of fumes that come into contact with the oil baffle 134, the necessary airflow of the range hood can be reduced, thereby reducing the noise of the range hood 10 and minimizing the occurrence of insufficient air supply and backflow odors.

[0039] In other embodiments, the oil baffle 134 can also be inclined upwards. That is, the distance between the oil baffle 134 and the stove surface gradually decreases from the front end to the rear end of the air inlet 13, so that the oil droplets generated after the oil baffle 134 comes into contact with the smoke can flow back into the interior of the range hood 10.

[0040] exist Figure 1In the illustrated embodiment, the angle between the mesh plate 133 and the smoke extraction surface 101 is an acute angle. One end of the mesh plate 133 is connected to the oil baffle plate 134, and the other end of the mesh plate 133 is connected to the opening 102 on the smoke extraction surface 101, so that oil droplets can flow back into the range hood 10 along the mesh plate 133 through the opening 102. The first side plate and the second side plate 132 are triangular in shape to support the overall structure of the air inlet 13. In other embodiments, the first side plate 131 and the second side plate 132 can also be trapezoidal or the like. The first side plate 131 and the second side plate 132 abut against the opposite ends of the opening 102, and the lower end of the mesh plate 133 abuts against the bottom end of the opening 102, thus sealing the opening 102 and allowing the fumes to enter the range hood through the air inlet 103 on the mesh plate 133.

[0041] The distance between the connection point of the mesh plate 133 and the oil baffle 134 and the edge of the oil baffle 134 is greater than 0; the distance between the connection point of the first side plate 131 and the second side plate 132 and the edge of the oil baffle 134 is greater than 0. That is, as... Figure 1 As shown, the edge of the oil baffle 134 protrudes, which improves the oil baffle 134's ability to block oil fumes, allowing more fumes to pass through the mesh plate 133 and enter the interior of the range hood 10. This improves the smoke extraction effect of the range hood 10.

[0042] Furthermore, the air inlet 13 can be movably connected to the housing 11 so that the air inlet 13 can be pulled out when in use and received in the receiving cavity formed by the housing 11 through the opening 102 when not in use.

[0043] Specifically, the oil baffle 134 of the air inlet 13 is movably connected to the housing 11 to open or block the opening 102. The oil baffle 134 can be connected to the housing 11 via a rotating shaft. The drive unit drives the rotating shaft to rotate, thereby opening and closing the oil baffle 134, so that the oil baffle 134 has an open state and a closed state.

[0044] When the oil baffle 134 is in the closed state, such as Figure 2 As shown, Figure 2 yes Figure 1The diagram shows another state of the range hood 10. In this state, the baffle plate 134 blocks the opening 102, and the mesh plate 133, the first side plate 131, and the second side plate 132 are housed within the receiving cavity. When the range hood 10 is not in operation, the baffle plate 134 can be closed to make the range hood 10 look cleaner, facilitate cleaning, and effectively reduce odors from the range hood returning to the kitchen. The range hood 10 can automatically close the baffle plate 134 based on the user's operation of turning off the fan. For example, when the operation of turning off the fan is detected, the baffle plate 134 can be automatically closed, or it can be automatically closed after a preset time interval. Alternatively, the range hood 10 can be equipped with an independent switch for opening and closing the baffle plate 134 to control its opening and closing.

[0045] When the baffle plate 134 is open, the air inlet 13 protrudes from the opening 102, allowing the fumes generated by the cooktop to enter the interior of the range hood 10 through the air inlet 103 protruding from the air inlet 13. Specifically, when the user uses the range hood and turns on the fan of the range hood 10, the baffle plate 134 opens along with the fan, the air inlet 13 extends out from the accommodating cavity, and the mesh plate 133, the first side plate 131, and the second side plate 132 are pulled out from the accommodating cavity, with the outer edge of the air inlet 13 abutting against the edge of the air inlet 103. The fumes generated by the cooktop enter the cavity of the air inlet 13 and the accommodating cavity through the air inlet 103 of the mesh plate 133. As the flue gas rises, it touches the oil baffle 134 and is blocked by the oil baffle 134. Oil droplets are formed on the inner wall of the oil baffle 134. Under the action of gravity, the oil droplets flow along the inclined oil baffle 134 to the mesh plate 133, and return to the accommodating cavity through the air inlet mesh of the mesh plate 133.

[0046] In the above embodiment, the air inlet 13 is closably disposed at the opening 102, allowing for control of its opening and closing according to usage needs, ensuring the range hood 10 meets user requirements. When the range hood 10 is not in use, the oil baffle 134 can be closed. In this state, the oil baffle 134 swings downward to accommodate the mesh plate 133, the first side plate 131, and the second side plate 132 within the receiving cavity. The oil baffle 134 covers the opening 102, sealing it. This prevents odors from escaping into the kitchen and maintains a cleaner appearance for the range hood. When the range hood is in use, the oil baffle 134 swings upward to pull the mesh plate 133, the first side plate 131, and the second side plate 132 out of the receiving cavity, causing the air inlet 13 to protrude from the opening 102. Smoke enters the range hood through the air inlet 103 of the mesh plate 133. If the oil baffle 134 comes into contact with oil and gets oily, it will flow back into the range hood 10 along the mesh plate 133 instead of dripping. Thus, when designing the range hood 10, it is not necessary to consider the amount of smoke from the oil baffle 134, thereby reducing the necessary airflow of the range hood.

[0047] Furthermore, there is a first distance between the bottom end of the air inlet 103 and the cooktop surface, and a second distance between the end of the air inlet 103 away from the receiving cavity and the wall. The difference between the first and second distances is less than 180mm. In this context, the wall refers to the mounting surface of the range hood 10, located behind the cooktop. It can be a solid wall or a baffle plate, etc. For example, the difference between the first and second distances could be 170mm, 160mm, 150mm, etc. That is, the difference between the distance between the air inlet 103 and the cooktop surface and the distance between the air inlet 103 and the wall is relatively small, in order to reduce the air volume required to achieve the same smoke extraction effect.

[0048] Furthermore, the distance L between the lower edge of the air inlet 103 and the stove surface satisfies the following formula: L≤550mm, preferably, L is less than or equal to 500mm. For example, the distance between the lower edge of the air inlet 103 and the stove surface can be 550mm, 545mm, 530mm, 520mm, 500mm, 400mm, etc., and can be set according to actual needs. The lower edge of the air inlet 103 refers to the side of the air inlet 103 closest to the stove surface. After the oil baffle 134 is opened, the distance D between the front end of the oil baffle 134 and the wall satisfies the following formula: D≤400mm, preferably, D≤350mm. For example, the distance D between the front end of the oil baffle 134 and the wall can be 400mm, 350mm, 300mm, 250mm, 200mm, or 100mm, etc.

[0049] The distance between the air inlet 103 and the oil baffle 134 can reduce the amount of air required to achieve the same smoke extraction effect.

[0050] In summary, the range hood 10 of this application has a simple structure and low cost. By setting the air inlet 103 to protrude from the smoke extraction surface 101, the oil droplets hanging on the inner wall of the oil baffle 134 can flow back into the interior of the range hood 10 along with the mesh plate 133, instead of dripping directly to the outside. This method can reduce the required air volume of the range hood 10, thereby reducing the noise generated by the range hood 10, and also reducing the occurrence of insufficient air supply and backflow of odors.

[0051] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A range hood, characterized in that, The range hood includes: The housing has a receiving cavity, and the housing includes a smoking surface, which has an opening communicating with the receiving cavity; An air inlet is provided at the opening, and the air inlet is provided with an air inlet that communicates with the accommodating cavity.

2. The range hood according to claim 1, characterized in that, The distance between the side of the air inlet section where the air inlet is located and the smoke-absorbing surface gradually decreases along the direction from the front end to the rear end of the air inlet section.

3. The range hood according to claim 2, characterized in that, The distance between the top of the air inlet 13 and the stove surface gradually increases from the front end to the rear end of the air inlet.

4. The range hood according to any one of claims 1-3, characterized in that, There is a first distance between the bottom of the air inlet and the stove surface, and a second distance between the end of the air inlet away from the accommodating cavity and the wall. The difference between the first distance and the second distance is less than 180mm.

5. The range hood according to claim 4, characterized in that, The distance between the lower edge of the air inlet and the stove surface is less than or equal to 550mm.

6. The range hood according to claim 1, characterized in that, The air inlet 13 includes: an oil baffle and a first side plate, a second side plate, and a mesh plate connected to one side of the oil baffle. One end of the mesh plate is connected to the first side plate, and the other end of the mesh plate is connected to the second side plate. The mesh plate is provided with a plurality of air inlets communicating with the accommodating cavity.

7. The range hood according to claim 6, characterized in that, The upper end of the mesh plate is connected to the front end of the oil baffle plate, and the bottom end of the mesh plate is connected to the lower edge of the opening.

8. The range hood according to claim 6, characterized in that, The distance between the connection point of the mesh plate and the oil baffle plate and the edge of the oil baffle plate is greater than 0. The distance between the connection point of the first side plate and the second side plate to the oil baffle and the edge of the oil baffle is greater than 0.

9. The range hood according to claim 6, characterized in that, The oil baffle is movably connected to the housing to open or seal the opening. The oil baffle has an open state and a closed state. In the closed state, the oil baffle blocks the opening, and the mesh plate, the first side plate, and the second side plate are housed within the accommodating cavity; in the open state, the mesh plate, the first side plate, and the second side plate protrude from the opening.

10. The range hood according to claim 9, characterized in that, When the oil baffle is in the open state, the distance between the front end of the oil baffle and the wall is less than or equal to 400mm.

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