Air duct structure and integrated cooker

Abstract

The utility model relates to the technical field of kitchen equipment, in particular to an air duct structure and an integrated cooker. Comprising a fan and an air inlet box, and the fan is fixedly connected with the air inlet box; the air inlet box comprises a rear plate, a surrounding plate, a mounting plate and a baffle, a mounting cavity is formed by a space defined by the rear plate, the surrounding plate and the mounting plate, the fan is at least partially located in the mounting cavity, and a spacing distance is formed between an air inlet of the fan and the rear plate; at least one end of the baffle is located on the lower side of the highest point of an air inlet of the draught fan, a cavity formed by the spacing distance between the air inlet of the draught fan and the rear plate comprises a first cavity and a second cavity, the first cavity is located on the upper side of the baffle, and the second cavity is located on the lower side of the baffle. In order to solve the technical problem that the noise of the integrated cooker is large, the baffle is arranged in the air inlet box, so that the aerodynamic noise in the oil smoke extraction working period is effectively reduced, and the integrated cooker has the advantages of low cost, remarkable effect and stable structure.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, in particular to an air duct structure and an integrated stove. Background Art

[0002] Integrated stoves are often accompanied by loud noise during operation, and the main source of noise comes from the core power components inside, namely the fan. The level of noise affects the user experience. Its main components are aerodynamic noise, mechanical noise and electromagnetic noise, among which the aerodynamic noise level determines the overall noise level. In integrated stoves, the aerodynamic noise and airflow state of the air intake box are also key factors that cannot be ignored, and its airflow state has a huge impact on the gas flow and noise of the subsequent fan. One of the existing ways to reduce aerodynamic noise is to optimize the structural parameters of the fan, but due to the constraints of process level and economy, the improvement that this method can bring is very limited. Utility Model Content

[0003] In order to solve the technical problem of high noise of integrated stoves, the utility model provides an air duct structure and an integrated stove, which effectively reduces the aerodynamic noise during the operation of extracting range fumes by arranging a baffle in the air intake box, and has the advantages of low cost, significant effect and stable structure.

[0004] The technical solution provided by the utility model is: a duct structure, including a fan and an air intake box, the fan is fixedly connected to the air intake box; the air intake box includes a rear plate, a surrounding plate, a mounting plate and a baffle, the space enclosed by the rear plate, the surrounding plate and the mounting plate constitutes an installation cavity, the fan is at least partially located in the installation cavity, and there is a spacing distance between the air inlet of the fan and the rear plate; at least one end of the baffle is located at the lower side of the highest point of the air inlet of the fan, and the cavity formed by the spacing distance between the air inlet of the fan and the rear plate includes a first cavity and a second cavity, the first cavity is located on the upper side of the baffle, and the second cavity is located on the lower side of the baffle.

[0005] Optionally, the cross-sectional width of the enclosure gradually decreases from the opening of the enclosure toward the baffle; at least one end of the baffle is located below the lowest point of the air inlet of the fan.

[0006] Optionally, the baffle is arranged at an angle, and a side of the baffle abutting against the rear plate is higher than a side of the baffle close to the fan.

[0007] Optionally, a sound absorbing material or a attenuation structure is provided in the air intake box.

[0008] Optionally, a first folded edge is provided on a side of the baffle plate close to the rear plate, and the first folded edge abuts against the rear plate.

[0009] Optionally, a second folded edge is provided on a side of the baffle close to the fan, and the second folded edge abuts against the fan.

[0010] Optionally, third folded edges are provided on both sides of the baffle plate close to the enclosure plate, and the third folded edges abut against the enclosure plate.

[0011] Optionally, the second folded edge is arranged toward the second cavity.

[0012] Optionally, an air outlet is provided on the enclosure, and a clearance gap is provided on the baffle at a position abutting against the air outlet.

[0013] An integrated stove comprises the above-mentioned air duct structure.

[0014] Beneficial Effects

[0015] The technical solution provided by the utility model has the following beneficial effects compared with the prior art: in order to solve the technical problem of high noise in the integrated stove, the utility model sets a baffle in the air intake box to reduce the disturbance of the air in the second cavity to the intake airflow in the first cavity, thereby reducing the generation of turbulence in the first cavity, and at the same time reducing the disturbance of the air in the second cavity to the intake airflow in the first cavity, thereby effectively reducing the aerodynamic noise of the fan when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an air duct structure proposed in an embodiment of the utility model.

[0017] Figure 2 A cross-sectional schematic diagram of an air duct structure proposed in an embodiment of the utility model.

[0018] Figure 3 An exploded schematic diagram of an air duct structure proposed in an embodiment of the utility model.

[0019] Figure 4 This is a schematic structural diagram of a baffle proposed in an embodiment of the utility model.

[0020] Figure 5 A schematic diagram of the partial structure of an air duct structure proposed in an embodiment of the utility model.

[0021] Figure 6 This is a schematic structural diagram of an integrated stove proposed in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0024] Example 1

[0025] Combined with Figure 1-6 , this embodiment proposes an air duct structure, including a fan 102 and an air intake box, the fan 102 is fixedly connected to the air intake box; the air intake box includes a rear plate 100, a surrounding plate 101, a mounting plate 103 and a baffle 104, the space enclosed by the rear plate 100, the surrounding plate 101 and the mounting plate 103 constitutes an installation cavity, the fan 102 is at least partially located in the installation cavity, and there is a spacing distance between the air inlet of the fan 102 and the rear plate 100; at least one end of the baffle 104 is located at the lower side of the highest point of the air inlet of the fan 102, and the cavity formed by the spacing distance between the air inlet of the fan 102 and the rear plate 100 includes a first cavity 201 and a second cavity 202, the first cavity 201 is located on the upper side of the baffle 104, and the second cavity 202 is located on the lower side of the baffle 104.

[0026] An air duct noise reduction mechanism of the present embodiment can effectively reduce the aerodynamic noise during the operation of extracting range fumes, and has the advantages of low cost, significant effect and stable structure.

[0027] In a duct noise reduction mechanism of the present embodiment, the air intake box is mainly composed of a rear plate 100, a surrounding plate 101 and a mounting plate 103. When the fan 102 is running, a negative pressure area is formed at the inlet area of ​​the fan 102, and the gas in the air intake box will be sucked into the fan 102.

[0028] In the case where the baffle 104 is not provided, since the air inlet of the fan 102 is located in the middle area of ​​the air inlet box, the airflow will enter the fan 102 from different directions. In the air inlet area, the airflows from various directions mix and collide, making the airflow entering the fan 102 chaotic. Such an airflow state is prone to form a turbulent effect, thereby causing an increase in aerodynamic noise. On this basis, when the baffle 104 is provided in this embodiment, the airflow in the first cavity 201 on the upper side of the baffle 104 can be avoided as much as possible from contacting the air in the second cavity 202 on the lower side of the baffle 104, that is, the airflows on both sides of the baffle 104 are avoided from disturbing each other to form turbulence, so that the airflow state in the air inlet area of ​​the fan 102 is relatively good, and the aerodynamic noise is reduced.

[0029] At least one end of the baffle 104 is located below the highest point of the air inlet of the fan 102. Figure 2 As shown in the solid line form of the baffle 104, the side of the baffle 104 close to the fan 102 can be completely located below the lowest point of the air inlet of the fan 102, or as shown in the attached Figure 2 As shown by the baffle 104 in the form of a dashed line, the baffle 104 may be higher than the lowest point of the air inlet of the fan 102 .

[0030] In one embodiment, one side of the fan 102 is arranged in close contact with the mounting plate 103, so that there is no space for airflow on one side of the fan 102, and noise can also be controlled to a certain extent.

[0031] Furthermore, when the fan 102 is working, part of the noise generated will radiate outward through the air inlet box component, and the other part will be continuously reflected in the air inlet box. When the baffle 104 is provided in this embodiment, the baffle 104 divides the internal space of the air inlet box into two, and the upper and lower side spaces of the baffle 104 form a first cavity 201 and a second cavity 202. When the fan generates noise during operation, it can penetrate the shell of the fan 102 and enter the first cavity 201 and the second cavity 202. The noise is continuously reflected and offset in the first cavity 201 and the second cavity 202, and part of the noise gradually decays, so the noise is reduced; and the noise entering the second cavity 202 can be blocked from propagating to the first cavity 201 because the baffle 104 is provided, and the noise entering the second cavity 202 will not radiate outward along the air inlet channel; at the same time, the noise in the second cavity 202 is continuously reflected, and cancels each other out during the reflection process, so that the noise is continuously decayed.

[0032] After testing, the air duct structure of this embodiment can effectively reduce the sound power level noise by about 3dB. Compared with other conventional noise reduction solutions, such as optimizing the fan 102, adding sound absorbing materials or perforated plates, etc., the air duct structure of this embodiment has a shorter design cycle, more cost advantages, and a stable structure and a longer service life.

[0033] Example 2

[0034] Combined with Figure 1 , 3 , 5 and 6, a duct structure of this embodiment can be improved as follows compared with the technical solution of embodiment 1: the cross-sectional width of the enclosure 101 gradually decreases from the opening of the enclosure 101 to the baffle 104; at least one end of the baffle 104 is located at the lower side of the lowest point of the air inlet of the fan 102. In this embodiment, the enclosure 101 can be a gradually narrowing U-shaped or V-shaped structure, so that the cross-sectional width of the enclosure 101 gradually decreases from the opening of the enclosure 101 to the baffle 104. In the case of this embodiment, when the fan is started and negative pressure is formed, the gas in the upper area above the baffle 104 is supplemented to the air inlet area along the two side walls of the enclosure, that is, the airflow flows from the wide area to the narrow area, the dynamic pressure increases, the static pressure decreases, and the fluidity of the gas is enhanced. And this gradually narrowing enclosure 101 can further save materials and reduce costs compared to the case where the cross-sectional width is consistent.

[0035] Example 3

[0036] Combined with Figure 2 , 35. An air duct structure of this embodiment can be improved as follows compared with the technical solution of embodiment 1 or 2: the baffle 104 is inclined, and the side of the baffle 104 abutting against the rear plate 100 is higher than the side of the baffle 104 close to the fan 102. In this embodiment, the inclined setting of the baffle 104 can facilitate the assembly of the fan 102 on the one hand, and can be used to guide the airflow to the air inlet of the fan 102 on the other hand.

[0037] Example 4

[0038] A wind duct structure of this embodiment, compared with any of the technical solutions of embodiments 1-3, can be improved as follows: the baffle 104 is concave downward, and the lowest point of the baffle 104 is located directly below the air inlet of the fan 102. In this embodiment, when the baffle 104 is concave, the airflow can be better guided to converge toward the air inlet area of ​​the fan 102. In combination with the above embodiments, when the baffle 104 is tilted, the guiding and converging effects of the airflow can be further enhanced, and the air suction effect of the fan 102 can be improved.

[0039] Example 5

[0040] A duct structure of this embodiment can be improved as follows compared with any of the technical solutions of embodiments 1-4: sound absorbing material or attenuation structure is arranged in the air intake box. To further enhance the noise reduction effect, in this embodiment, sound absorbing material such as sound absorbing cotton is arranged in the air intake box, that is, in the first cavity 201 or the second cavity 202, or attenuation noise reduction structure such as perforated plate, micro-slit plate, etc. is installed.

[0041] Example 6

[0042] Combined with Figure 2-5 , compared with any one of the technical solutions in embodiments 1-5, the air duct structure of this embodiment can be improved as follows: a first folded edge 105 is provided on the side of the baffle 104 close to the rear plate 100, and the first folded edge 105 abuts against the rear plate 100. To realize the assembly of the baffle 104, in this embodiment, the first folded edge 105 can be fixedly connected to the rear plate 100 by welding, gluing, riveting or screw connection.

[0043] In an optional embodiment, a second folded edge 106 is provided on the side of the baffle 104 close to the fan 102, and the second folded edge 106 abuts against the fan 102. Similar to the arrangement of the first folded edge 105, in this embodiment, the second folded edge 106 can be fixedly connected to the fan 102 by welding, gluing, riveting or screwing to achieve assembly of the baffle 104.

[0044] In another embodiment, the baffle 104 is provided with third folded edges 107 on both sides close to the enclosure 101, and the third folded edges 107 abut against the enclosure 101. Similar to the arrangement of the first folded edges 105 and the second folded edges 106, in this embodiment, the third folded edges 107 can be fixedly connected to the enclosure 101 by welding, gluing, riveting or screwing, so as to realize the assembly of the baffle 104.

[0045] In the above-mentioned embodiment, the first folded edge 105 , the second folded edge 106 and the third folded edge 107 can be set individually or in combination, wherein the form in which all three are set and used is the optimal setting form of the baffle 104 , thereby achieving a better assembly effect of the baffle 104 .

[0046] Example 7

[0047] Combined with Figure 2 , compared with the technical solution of Example 6, an air duct structure of this embodiment can be improved as follows: the second folded edge 106 is arranged toward the second cavity 202. If the second folded edge 106 is located in the first cavity 201, since the second folded edge 106 is located in the air inlet area of ​​the fan 102, and the lower side of the enclosure 101 is closed, the airflow mainly enters the air inlet of the fan 102 from the upper side of the baffle 104. At this time, the connection folded edge 106 will disturb the airflow on the upper side of the baffle 104, which will generate noise. Therefore, in this embodiment, the second folded edge 106 is arranged toward the second cavity 202, which relatively reduces the disturbance of the airflow on the upper side of the baffle 104, which helps to reduce noise.

[0048] Example 8

[0049] Combined with Figure 4 and 5 , compared with any one of the technical solutions in embodiments 1-7, the air duct structure of this embodiment can be improved as follows: an air outlet 108 is provided on the enclosure 101, and a clearance notch 109 is provided on the baffle 104 at a position abutting against the air outlet 108. Since the air outlet 108 is provided on the enclosure 101, in order to avoid interference, the present embodiment provides a clearance notch 109 on the baffle 104 to ensure the assembly effect.

[0050] Example 9

[0051] Combined with Figure 1-6 This embodiment proposes an integrated stove, including an air duct structure of any technical solution of embodiments 1-8.

[0052] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An air duct structure, characterized in that: The invention comprises a fan (102) and an air intake box, wherein the fan (102) is fixedly connected to the air intake box; the air intake box comprises a rear plate (100), a surrounding plate (101), a mounting plate (103) and a baffle (104); a space enclosed by the rear plate (100), the surrounding plate (101) and the mounting plate (103) constitutes a mounting cavity; the fan (102) is at least partially located in the mounting cavity; an air inlet of the fan (102) is connected to the rear plate (100), and a mounting cavity is formed between the rear plate (100), the surrounding plate (101) and the mounting cavity. There is a spacing distance between the baffle (104); at least one end of the baffle (104) is located below the highest point of the air inlet of the fan (102); the cavity formed by the spacing distance between the air inlet of the fan (102) and the rear plate (100) comprises a first cavity (201) and a second cavity (202), the first cavity (201) is located on the upper side of the baffle (104), and the second cavity (202) is located on the lower side of the baffle (104).

2. The air duct structure according to claim 1, characterized in that: The cross-sectional width of the enclosure (101) gradually decreases from the opening of the enclosure (101) toward the baffle (104); at least one end of the baffle (104) is located below the lowest point of the air inlet of the fan (102).

3. An air duct structure according to claim 1 or 2, characterized in that: The baffle plate (104) is arranged tilted, and the side of the baffle plate (104) abutting against the rear plate (100) is higher than the side of the baffle plate (104) close to the fan (102).

4. The air duct structure according to claim 1, characterized in that: The air intake box is provided with sound absorbing material or attenuation structure.

5. The air duct structure according to claim 1, characterized in that: A first folded edge (105) is provided on one side of the baffle plate (104) close to the rear plate (100), and the first folded edge (105) abuts against the rear plate (100).

6. The air duct structure according to claim 1, characterized in that: A second folded edge (106) is provided on a side of the baffle (104) close to the fan (102), and the second folded edge (106) abuts against the fan (102).

7. The air duct structure according to claim 1, characterized in that: The baffle (104) is provided with third folded edges (107) on both sides close to the enclosure (101), and the third folded edges (107) are in contact with the enclosure (101).

8. The air duct structure according to claim 6, characterized in that: The second folded edge (106) is disposed toward the second cavity (202).

9. The air duct structure according to claim 1, characterized in that: An air outlet (108) is provided on the enclosure (101), and a clearance notch (109) is provided on the baffle (104) at a position abutting against the air outlet (108).

10. An integrated stove, characterized in that: It comprises an air duct structure as described in any one of claims 1 to 9.

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