Air guide structure and refrigeration range hood

Abstract

The invention discloses an air guide structure and a refrigeration range hood, the air guide structure comprises an air guide channel, an air outlet panel and an air guide plate, the air guide channel comprises a curve air guide section and an inclined plane air guide section, the curve air guide section is provided with an air inlet, and the inclined plane air guide section is provided with an air outlet; the air outlet panel is arranged at the air outlet; the air guide plate is arranged at a transition position between the curve air guide section and the slope air guide section; the air deflector guides air in the bend air guide section to the slope air guide section. During use, air blown out of a volute of the refrigeration range hood is guided and steered by the curve air guide section, the air guide plate and the bevel air guide section in sequence and is finally blown out through the air outlet panel, and the bevel air guide section avoids the problems that no cold air exists in the middle area of the air outlet, and vortexes extending towards the two sides are formed in the middle area due to the fact that the airflow speed of the two sides is large. Therefore, the uniform air outlet effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an air guide structure and a refrigeration range hood. Background Art

[0002] During operation, the evaporative fan generates cool air that is delivered to the cook via the evaporative air duct, enhancing the cooking environment's comfort. However, due to the compact structure of refrigerated hoods, the evaporative fan's air outlet often aligns with the intended direction of the cool air toward the cook. Therefore, an air guide structure is necessary to adjust the cool air flow. Furthermore, the uniformity of the cool air is a key consideration. If the cool air is unevenly distributed, the cook in front of the hood will experience drastic temperature fluctuations, impacting the overall user experience.

[0003] In the prior art, cold air typically undergoes multiple turns as it travels from the evaporative duct outlet to the cook. Specifically, the cold air initially exits the volute in a vertically downward direction, then turns toward the cook after its first turn. To achieve uniform air distribution over a large area, a second turn is required, and a third turn is required near the outlet to ensure uniform distribution of the cold air. However, this complex cold air flow path makes it difficult to maintain a low temperature and uniform distribution of the cold air near the outlet. This not only increases flow resistance but can also cause the cold air temperature to rise and the flow rate to become uneven, directly impacting the user experience.

[0004] Currently, most of the air guide structures on the market are in the form of horizontal or vertical blades, which cannot solve the problem of uneven air output. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an air guide structure and a refrigeration range hood, aiming to solve the problem of uneven air output from the refrigeration range hood.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides an air guide structure, comprising:

[0008] The air guide channel includes a curved air guide section and an inclined air guide section, wherein the curved air guide section is provided with an air inlet, and the inclined air guide section is provided with an air outlet;

[0009] an air outlet panel, provided at the air outlet;

[0010] An air guide plate is provided at a transition position between the curved air guide section and the inclined air guide section;

[0011] The wind guide plate guides the wind in the curved wind guide section to the inclined wind guide section.

[0012] Furthermore, a surface of the inclined air guide section opposite to the air outlet panel is an inclined surface.

[0013] Furthermore, the angle between the inclined surface and the air outlet panel is inversely proportional to the wind speed at the air inlet.

[0014] Furthermore, the angle between the inclined surface and the air outlet panel is 4.0°-6.5°.

[0015] Furthermore, the wind guide plate is provided with ventilation holes along the thickness direction thereof, and a portion of the wind in the curved wind guide section passes through the ventilation holes and flows to the air outlet.

[0016] Furthermore, the ventilation holes are in the shape of long strips and are extended along the length direction of the air guide plate.

[0017] Furthermore, the number of the ventilation holes is 4-8.

[0018] Furthermore, the air outlet panel is provided with a plurality of through holes.

[0019] Furthermore, an upward inclined angle is formed between the central axis of the through hole and the horizontal plane.

[0020] On the other hand, the present invention further provides a refrigeration range hood, comprising a refrigeration range hood body and the above-mentioned air guide structure, wherein the air inlet is connected to the volute outlet of the refrigeration range hood body.

[0021] Compared with the prior art, the present invention has the following advantages: an air guide structure, comprising an air guide channel, an air outlet panel, and an air guide plate; the air guide channel comprises a curved air guide section and an inclined air guide section; the curved air guide section is provided with an air inlet, and the inclined air guide section is provided with an air outlet; the air outlet panel is provided at the air outlet; the air guide plate is provided at the transition position between the curved air guide section and the inclined air guide section; and the air guide plate guides the air in the curved air guide section to the inclined air guide section. During use, the air blown out from the volute of the refrigeration range hood is guided and diverted in sequence by the curved air guide section, the air guide plate, and the inclined air guide section, and finally blown out through the air outlet panel. The inclined air guide section avoids the problem of a lack of cold air in the middle area of ​​the air outlet and the formation of a vortex extending to both sides in the middle area due to the high air flow velocity on both sides, thereby achieving a uniform air outlet effect.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of an air guide structure provided in a specific embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of an air guide plate in an air guide structure provided by a specific embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of an air outlet panel in an air guide structure provided in a specific embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of an air outlet panel in an air guide structure provided in a specific embodiment of the present invention;

[0028] Figure 5 A schematic diagram of air flow lines when no inclined surface is provided in the air guide structure provided in a specific embodiment of the present invention;

[0029] Figure 6 A schematic diagram of air flow lines when the angle between the inclined surface and the air outlet panel is 6.4° according to a specific embodiment of the present invention;

[0030] Figure 7 A schematic diagram of air flow lines when the angle between the inclined surface and the air outlet panel is 5.5° according to a specific embodiment of the present invention;

[0031] Figure 8 A schematic diagram of air flow lines when the angle between the inclined surface and the air outlet panel is 4.8° according to a specific embodiment of the present invention;

[0032] Figure 9 A schematic diagram showing the effect of air guide plates with different numbers of ventilation holes on air flow lines according to a specific embodiment of the present invention;

[0033] Figure 10 A schematic diagram of an upward-inclined air outlet streamline provided in a specific embodiment of the present invention.

[0034] Reference numerals

[0035] 1. Air guide channel; 11. Curved air guide section; 111. Air inlet; 12. Inclined air guide section; 121. Inclined surface; 122. Air outlet; 2. Air outlet panel; 21. Through hole; 3. Air guide plate; 31. Ventilation hole; 100. Volute. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0042] like Figures 1 to 4 As shown, an embodiment of the present invention provides an air guide structure, including an air guide channel 1, an air outlet panel 2 and an air guide plate 3. The air guide channel 1 includes a curved air guide section 11 and an inclined air guide section 12. The curved air guide section 11 is provided with an air inlet 111, and the inclined air guide section 12 is provided with an air outlet 122; the air outlet panel 2 is provided at the air outlet 122; the air guide plate 3 is provided at a transition position between the curved air guide section 11 and the inclined air guide section 12; the air guide plate 3 guides the wind in the curved air guide section 11 to the inclined air guide section 12.

[0043] Specifically, the curved air guide section 11 is provided with an air inlet 111, which is connected to the outlet of the volute 100 of the refrigeration hood body, so that the air blown out of the volute 100 can enter the air guide channel 1. The outlet of the volute 100 is generally vertically downward, so the air inlet 111 also needs to be arranged in a vertical direction. The curved air guide section 11 is designed to be curved in order to make a first turn of the vertically downward air flow, changing the direction of the flow towards the direction where the cook is.

[0044] The bending angle of the curved air guide section 11 can be adjusted according to actual needs and can generally be set to 90°.

[0045] The air guide plate 3 is arranged at the transition position between the curved air guide section 11 and the inclined air guide section 12. Its main function is to divert the wind in the curved air guide section 11 for a second time, that is, to divert the wind that is already heading towards the direction of the cook for a second time, so as to face the direction perpendicular to the cook, in preparation for large-area air supply.

[0046] The air guide plate 3 is vertically mounted at a transition position between the curved air guide section 11 and the inclined air guide section 12 of the air guide channel 1 by screws.

[0047] The inclined air guide section 12 is provided with an air outlet 122, which is the position where the wind is finally blown out, that is, the position of the air guide channel 1 closest to the cook. The inclined air guide section 12 will make a third turn for the wind that has been turned perpendicular to the cook after the second turn, so as to change the flow direction back to the direction of the cook.

[0048] The wind blown out from the refrigeration hood volute 100 is guided and turned three times in sequence through the curved air guide section 11, the air guide plate 3 and the inclined air guide section 12, and is finally blown out to the direction of the cook through the air outlet panel 2. The inclined air guide section 12 is set to avoid the problem of no cold air in the middle area of ​​the air outlet 122, and the problem of vortex phenomenon extending to both sides caused by the large air flow speed on both sides, thereby achieving a uniform air outlet effect.

[0049] The curved air guide section 11 and the inclined air guide section 12 can flexibly adopt an integrated structure or a split structure according to actual needs.

[0050] Specifically, when using an integrated structure, the entire air guide channel 1 is a continuously formed component, manufactured through a single processing process (such as stamping). The advantages of this structural form are its high overall structural strength and the absence of connecting gaps, which can effectively avoid air leakage caused by gaps and ensure the flow stability and sealing of air within the air guide channel 1. At the same time, due to the reduction of assembly steps, production efficiency is improved and production costs are correspondingly reduced.

[0051] If a split structure is used, the curved air guide section 11 and the inclined air guide section 12 are independently manufactured and then assembled together using a suitable connection method. Common connection methods include snap-fit ​​connections, bolt connections, and adhesive bonding. The advantage of this structural form is that it allows for individual optimization and adjustment of the curved air guide section 11 and the inclined air guide section 12 according to different design requirements.

[0052] like Figure 1 As shown, in one embodiment, the surface of the inclined air guide section 12 that faces the air outlet panel 2 is an inclined surface 121. This design allows the inclined surface 121 to direct the wind toward the air outlet panel 2. The angle between the inclined surface 121 and the air outlet panel 2 is inversely proportional to the wind speed at the air inlet 111. That is, as the wind speed increases, the angle between the inclined surface 121 and the air outlet panel 2 needs to decrease. Based on this relationship, the design of the inclined surface 121 of the inclined air guide section 12 can be optimized.

[0053] Generally, the average wind speed from the outlet of the volute 100 into the air inlet 111 is between 9 and 10 m / s, and the angle between the inclined surface 121 and the air outlet panel 2 is 4.0°-6.5°. Based on this, after repeated experiments, the following conclusions were drawn:

[0054] like Figure 5 As shown, in the initial design without the inclined surface 121, the air is concentrated on both sides of the air outlet 122, and there is no cold air in the middle area. Moreover, due to the high air flow speed on both sides, a vortex phenomenon extending to both sides is formed in the middle area.

[0055] like Figure 6As shown, after optimization, when the angle between the inclined surface 121 and the air outlet panel 2 is set to 6.4°, the uniformity of the air outlet 122 is improved, but there is still room for improvement.

[0056] like Figure 7 As shown, further optimization is performed, when the angle between the inclined surface 121 and the air outlet panel 2 is set to 5.5°, the air outlet uniformity is significantly improved, but there is still a certain windless area at the connection between the inclined surfaces.

[0057] like Figure 8 As shown, ultimately, by setting the included angle between the inclined surface 121 and the air outlet panel 2 to 4.8°, an ideal uniform air outlet effect is achieved.

[0058] like Figure 2 and Figure 3 As shown, the air guide plate 3 is provided with ventilation holes 31 along the thickness direction thereof, and a portion of the wind in the curved air guide section 11 passes through the ventilation holes 31 of the air guide plate 3 and flows to the air outlet 122 .

[0059] The wind deflector 3 can be designed as an arc-shaped plate, and the degree of curvature of the arc can be adapted to the shapes of the curved wind guide section 11 and the inclined wind guide section 12. For example, when the curvature angle of the curved wind guide section 11 is 90° and the angle between the inclined wind guide section 12 and the horizontal direction is 4.8°, the wind deflector 3 can be designed as an arc-shaped plate with a corresponding curvature, so that the wind can smoothly transition from the curved wind guide section 11 to the inclined wind guide section 12 when passing through the wind deflector 3.

[0060] Through the provided ventilation holes 31, a portion of the wind within the curved air guide section 11 passes through the air guide plate 3 directly to the air outlet 122, effectively reducing the formation of vortices at the location of the air guide plate 3. It should be noted that due to wind speed, most of the wind within the curved air guide section 11 will be guided by the air guide plate 3 to the inclined air guide section 12, and only a small portion will pass through the air guide plate 3 directly to the air outlet 122.

[0061] like Figure 3 As shown, the ventilation holes 31 are in the shape of long strips and extend along the length direction of the air guide plate 3. There can be multiple ventilation holes 31, which are arranged vertically and the lengths of the multiple ventilation holes 31 can be the same or different.

[0062] It is more appropriate to set the number of ventilation holes 31 to 4-8, specifically, to 4, 6 or 8. After repeated experiments, the following conclusions were drawn.

[0063] like Figure 9As shown, eight ventilation holes 31 provide better airflow uniformity. However, reducing the number of ventilation holes 31 to four results in an overcorrection, resulting in higher wind speeds in areas away from the air outlet 122 and uneven wind speed distribution. The current arrangement of eight holes, evenly spaced vertically, is also intended to ensure uniform airflow along the vertical plane.

[0064] like Figure 3 、 Figure 4 and Figure 10 As shown, the air outlet panel 2 is provided with a plurality of through-holes 21. These through-holes 21 can be honeycomb, circular, or square. The central axis of the through-hole 21 forms an upward angle with the horizontal plane. This design allows the cold air to flow upward upon leaving the air outlet panel 2, thereby achieving two optimization effects: first, this design helps promote air circulation throughout the house, improving cooling efficiency; second, the upward-angled air outlet prevents the cold air from blowing directly at the cook, providing a more comfortable kitchen environment. Typically, the upward angle formed between the central axis of the through-hole 21 and the horizontal plane is 2°-10°.

[0065] An embodiment of the present invention further provides a refrigeration hood, comprising a refrigeration hood body and the aforementioned air guide structure, wherein an air inlet 111 is connected to the outlet of the volute 100 of the refrigeration hood body. Aside from the aforementioned air guide structure, the remaining structure of the refrigeration hood is identical to that of the prior art and will not be further described herein.

[0066] It should be noted that the refrigeration range hood provided in the embodiment of the present invention includes the above-mentioned air guide structure, so the refrigeration range hood has all the beneficial effects of the above-mentioned centrifugal fan, which will not be described in detail here.

[0067] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An air guide structure, characterized in that: include: The air guide channel includes a curved air guide section and an inclined air guide section, wherein the curved air guide section is provided with an air inlet, and the inclined air guide section is provided with an air outlet; an air outlet panel, provided at the air outlet; An air guide plate is provided at a transition position between the curved air guide section and the inclined air guide section; The wind guide plate guides the wind in the curved wind guide section to the inclined wind guide section.

2. The air guide structure according to claim 1, characterized in that: A surface of the inclined air guide section opposite to the air outlet panel is an inclined surface.

3. The air guide structure according to claim 2, characterized in that: The included angle between the inclined surface and the air outlet panel is inversely proportional to the wind speed at the air inlet.

4. The air guide structure according to claim 2, characterized in that: The angle between the inclined surface and the air outlet panel is 4.0°-6.5°.

5. The air guide structure according to claim 1, characterized in that: The air guide plate is provided with ventilation holes along the thickness direction thereof, and a portion of the wind in the curved air guide section passes through the ventilation holes and flows to the air outlet.

6. The air guide structure according to claim 5, characterized in that: The ventilation holes are in the shape of long strips and are extended along the length direction of the air guide plate.

7. The air guide structure according to claim 6, characterized in that: The number of the ventilation holes is 4-8.

8. The air guide structure according to claim 1, characterized in that: The air outlet panel is provided with a plurality of through holes.

9. The air guide structure according to claim 8, characterized in that: An upwardly inclined angle is formed between the central axis of the through hole and the horizontal plane.

10. A refrigeration range hood, characterized in that: It comprises a refrigeration range hood body and the air guide structure according to any one of claims 1 to 9, wherein the air inlet is connected to the volute outlet of the refrigeration range hood body.

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