Bilateral air curtain range hood

Abstract

The utility model discloses a double-side air curtain range hood which comprises an exhaust fume collecting hood and an air curtain assembly, air curtain air inlets and air curtain air outlets are formed in the exhaust fume collecting hood, the air curtain air inlets are formed in the side portion or the top of the exhaust fume collecting hood, and the air curtain air outlets are formed in the bottoms of the two sides of the exhaust fume collecting hood; the air curtain assembly comprises an air curtain fan, and the air curtain fan is arranged in the exhaust fume collecting hood and guides airflow to enter through the air curtain air inlet and to be guided out through the air curtain air outlet so that air curtains can be formed on the two sides of the exhaust fume collecting hood. According to the range hood, by arranging the air curtains on the two sides, oil fume is limited in the area below the exhaust fume collecting hood, the oil fume can be effectively prevented from diffusing towards the two sides, and blowing of external flowing airflow to the oil fume is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood technical field especially relates to a double side air curtain range hood. BACKGROUND

[0002] The air curtain range hood forms the air curtain at the front side of the range hood to prevent the oil fume overflow. However, the common air curtain range hood at present, the air curtain module mostly only sets up at the front side, and the single air outlet flow is formed. The air curtain of this single air outlet flow has obvious defects, because of lacking the side block and guide, the oil fume is easy to overflow from the two sides of the air curtain under the influence of the hot air flow generated by cooking, air convection and its diffusion characteristics, leading to still having more oil fume remaining in the kitchen, affecting the air quality and cleanliness of the kitchen.

[0003] In addition, in actual use, the kitchen often needs to open the window to ventilate to maintain the air circulation, but after opening the window, the outside air will flow into the kitchen, forming unstable air flow. When the air curtain of the range hood is only at the front side, these air entering from the window will interfere with the normal suction path of the oil fume, which may blow the oil fume away, making it difficult to be effectively gathered and sucked by the range hood. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a double side air curtain range hood, which can reduce the blowing effect of air on the oil fume and avoid the interference of the gathering and suction of the oil fume by forming the air curtain on both sides of the range hood.

[0005] The utility model adopts the technical scheme that:

[0006] A double side air curtain range hood, comprising a smoke collecting hood and an air curtain assembly, the smoke collecting hood is provided with an air curtain air inlet and an air curtain air outlet, the air curtain air inlet is arranged on the side or top of the smoke collecting hood, and the air curtain air outlet is arranged on the two side bottoms of the smoke collecting hood; the air curtain assembly comprises an air curtain fan, the air curtain fan is arranged in the smoke collecting hood and guides the airflow to enter through the air curtain air inlet and is guided to exit through the air curtain air outlet to form an air curtain on both sides of the smoke collecting hood.

[0007] Further, the bottom of the smoke collecting hood is provided with an oil fume suction area, and the air curtain is formed on both sides of the oil fume suction area.

[0008] Further, the smoke collecting hood is provided with a smoke collecting cavity and an air curtain cavity which are isolated from each other, the smoke collecting cavity is communicated with the oil fume suction area, the air curtain cavity is arranged on both sides of the smoke collecting cavity, the air curtain fan is installed in the air curtain cavity, and the air curtain air inlet and the air curtain air outlet are through the air curtain cavity.

[0009] Further, the both sides of the smoke collecting hood are provided with side baffles, the side baffles are internally provided with guide channels, the guide channels are connected with the air curtain cavity; the air curtain air inlet is arranged at the side of the side baffle, and the air curtain air outlet is arranged at the bottom of the side baffle and penetrates the guide channel.

[0010] Further, the air curtain air outlet continuously extends on the side baffle, or a plurality of air curtain air outlets are arranged at intervals on the side baffle.

[0011] Further, the front end of the smoke collecting hood is provided with a front baffle, the bottom of the both sides of the front baffle is provided with a second air curtain air outlet, and the second air curtain air outlet is connected with the air curtain cavity.

[0012] Further, the bottom of the side baffle is provided with an air outlet surface, and the air outlet surface gradually inclines downward from one end close to the front baffle to one end away from the front baffle.

[0013] Further, the air curtain assembly further comprises a mounting seat connected to the cavity wall of the air curtain cavity, and the air curtain fan is mounted on the mounting seat.

[0014] Further, the range hood comprises a smoke discharging hood connected to the top of the smoke collecting hood, and the smoke discharging hood is internally provided with a smoke discharging cavity in communication with the smoke collecting cavity.

[0015] Further, the bottom of the smoke collecting hood is provided with an oil fume inlet in communication with the oil fume collecting area and the smoke collecting cavity, and the smoke discharging cavity is internally provided with a wind wheel assembly for sucking air in the oil fume collecting area into the smoke collecting cavity and the smoke discharging cavity.

[0016] In summary, the double-side air curtain range hood has the following technical effects:

[0017] The double-side air curtain range hood can limit the oil fume in the lower area of the smoke collecting hood, effectively prevent the oil fume from spreading to the both sides, and avoid the oil fume from overflowing to the kitchen space from the side. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the range hood of the embodiment of the utility model;

[0019] Figure 2 It is a top view of the range hood of the embodiment of the utility model;

[0020] Figure 3 is Figure 2 is a sectional view at A-A;

[0021] Figure 4 is a bottom view of the range hood of the embodiment of the present application after hiding the oil baffle;

[0022] Figure 5 is Figure 1 is a structural schematic view from another perspective;

[0023] Figure 6 is a side view of the range hood of the embodiment of the present application.

[0024] In the drawings, the following notations are used:

[0025] 1, hood; 11, smoke collecting cavity; 12, air curtain cavity; 13, side baffle; 131, guide channel; 132, air outlet surface; 14, front baffle; 15, oil fume suction area; 16, oil fume inlet; 17, oil baffle; 2, air curtain assembly; 21, air curtain air inlet; 22, air curtain air outlet; 23, second air curtain air outlet; 24, mounting seat; 25, air curtain fan; 3, smoke exhaust hood; 31, smoke exhaust cavity; 32, air wheel assembly. DETAILED DESCRIPTION

[0026] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0027] In the description of the present application, it should be noted that the orientations or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or position relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is only for the purpose of describing specific embodiments of the present application and is not intended to limit the present application.

[0029] Reference is made to Figure 1The utility model discloses a double side air curtain range hood, which comprises a smoke collecting hood 1 and an air curtain assembly 2. Specifically, the smoke collecting hood 1 is provided with an air curtain air inlet 21 and an air curtain air outlet 22. The air curtain air inlet 21 is arranged on the side or top of the smoke collecting hood 1, and the air curtain air outlet 22 is arranged on the bottom of the two sides of the smoke collecting hood 1. Figure 2 And Figure 3 The air curtain assembly 2 comprises an air curtain fan 25, which is arranged in the smoke collecting hood 1 and used to guide the airflow to enter through the air curtain air inlet 21 and to be discharged through the air curtain air outlet 22 to form an air curtain on the two sides of the smoke collecting hood 1.

[0030] Based on the above structure, when the double side air curtain range hood is used, the air curtain fan 25 starts to operate when the user turns on the range hood. The suction force generated by the air curtain fan 25 can suck air from the air curtain air inlet 21. The sucked airflow flows to the air curtain air outlet 22 under the guidance of the air curtain fan 25. Since the air curtain air outlet 22 is arranged on the bottom of the two sides of the smoke collecting hood 1, the airflow is finally sprayed from here. The airflow sprayed from the bottom of the two sides has a certain speed and pressure, and they form a continuous air curtain on the two sides of the smoke collecting hood 1.

[0031] When cooking, the double side air curtain starts to play a role as the oil fume is generated. Specifically, the double side air curtain restricts the oil fume in the lower area of the smoke collecting hood 1. When the oil fume rises, the air curtain can effectively prevent the oil fume from spreading to the two sides and avoid the oil fume overflowing from the sides to the kitchen space.

[0032] At the same time, the double side air curtain can weaken the interference of the external flowing airflow on the oil fume suction, reduce the blowing of the external air on the oil fume, and make the oil fume still be guided to the inside of the smoke collecting hood 1 by the suction force of the range hood under the restriction of the air curtain, and then be discharged through the smoke exhaust channel.

[0033] Therefore, the double side air curtain provides a side block for the oil fume, prevents the oil fume from spreading to the two sides, and makes the suction force of the range hood be able to more concentratedly act on the oil fume generation area. When facing the airflow change caused by the kitchen window opening, the fan starting and other external factors, the double side air curtain can keep the relative stability of the airflow in the oil fume suction area 15. This helps to maintain the normal working state of the range hood and ensures that the range hood can still stably and efficiently suck and remove the oil fume in the complex kitchen environment.

[0034] Further, referring to Figure 1 The bottom of the smoke collecting hood 1 is provided with an oil fume suction area 15, and the air curtain is formed on the two sides of the oil fume suction area 15.

[0035] Specifically, when the oil fume is generated during cooking, the oil fume will naturally rise and concentrate in the oil fume suction area 15, and the air curtain can effectively restrict the oil fume in the oil fume suction area 15 to prevent it from spreading to the two sides, thereby realizing the gathering and suction of the oil fume.

[0036] Due to the stable air flow barrier formed by the air curtain on both sides of the oil fume suction area 15, the air flow in the oil fume suction area 15 is more concentrated and orderly. Under the action of the suction force of the range hood, a relatively stable negative pressure environment will be formed in the oil fume suction area 15, which can more effectively suck the oil fume into the smoke collecting hood 1, thereby improving the efficiency and effect of oil fume suction.

[0037] Further, referring to Figure 3 , the smoke collecting hood 1 is provided with a smoke collecting cavity 11 and an air curtain cavity 12 which are isolated from each other, and the smoke collecting cavity 11 is in communication with the oil fume suction area 15. Among them, the air curtain cavity 12 is arranged on both sides of the smoke collecting cavity 11, and the air curtain fan 25 is installed in the air curtain cavity 12. In addition, the air curtain inlet 21 and the air curtain outlet 22 are both through the air curtain cavity 12.

[0038] On the basis of this structure, when the air curtain fan 25 starts to operate, the air pressure in the air curtain cavity 12 decreases, and the external air will be continuously sucked into the air curtain cavity 12 through the air curtain inlet 21. The air sucked into the air curtain cavity 12 flows along the air curtain cavity 12 to the air curtain outlet 22 under the push of the air curtain fan 25. Since the air curtain outlet 22 is through the air curtain cavity 12, and the air curtain cavity 12 is arranged on both sides of the smoke collecting cavity 11, the air will eventually be sprayed out from the air curtain outlet 22, forming a stable and continuous air curtain on both sides of the oil fume suction area 15.

[0039] During cooking, the oil fume generated will rise upwards. Since the smoke collecting cavity 11 is in communication with the oil fume suction area 15, the oil fume will enter the smoke collecting cavity 11 through the oil fume suction area 15 during the rising process. The oil fume entering the smoke collecting cavity 11 will be further discharged to the outdoor along the pre-set smoke exhaust channel under the action of other smoke exhaust components (such as fans, etc.) inside the range hood.

[0040] Therefore, by arranging the smoke collecting cavity 11 and the air curtain cavity 12 which are isolated from each other, the air flow of the air curtain and the air flow of the oil fume suction are run in their respective independent spaces, avoiding mutual interference between the air flows, allowing the suction force of the range hood to act more concentratedly on the oil fume, thereby significantly improving the efficiency of oil fume suction.

[0041] In addition, the isolated cavities avoid the oil fume entering the air curtain cavity 12 from causing erosion and damage to the components such as the air curtain fan 25. The air curtain fan 25 runs in the relatively clean air curtain cavity 12, which can reduce the performance decline and failure probability caused by oil stains attachment, corrosion and other problems, so that it can work more stably and persistently, thereby prolonging the service life of the entire range hood.

[0042] Further, referring to Figure 1 and Figure 3The side baffle 13 is provided with a guide channel 131, wherein the guide channel 131 is connected with the air curtain cavity 12, and the air curtain air inlet 21 is arranged on the side of the side baffle 13. In addition, the air curtain air outlet 22 is arranged on the bottom of the side baffle 13 and penetrates the guide channel 131.

[0043] On the basis of the structure, when the air curtain fan 25 starts to work, a negative pressure is generated in the air curtain cavity 12. Since the air curtain air inlet 21 is arranged on the side of the side baffle 13, the external air is first sucked into the air curtain cavity 12 from the air curtain air inlet 21 on the side of the side baffle 13. The air curtain cavity 12 is connected with the guide channel 131, and the air flows into the guide channel 131 along the air curtain cavity 12. In the guide channel 131, the air curtain fan 25 further guides the airflow, so that the airflow is sprayed out of the air curtain air outlet 22 arranged on the bottom of the side baffle 13 and penetrating the guide channel 131, thereby forming an air curtain on both sides of the smoke collecting hood 1.

[0044] Therefore, the arrangement of the side baffle 13 prolongs the vertical height of the air curtain, further strengthens the restriction on the oil fume, makes it more difficult for the oil fume to escape from the side, and greatly improves the collection efficiency of the extractor hood on the oil fume. In addition, the side baffle 13 can block the interference of external air to a certain extent; when the kitchen is opened or there is other air flow, the side baffle 13 can reduce the direct impact of external airflow on the airflow in the oil fume suction area 15, so that the airflow environment in the air curtain is more stable.

[0045] In addition, it should be noted that when the extractor hood is installed, the top of the smoke collecting hood 1 may be close to or even attached to the bottom of the kitchen counter. If the air curtain air inlet 21 is arranged on the top of the smoke collecting hood 1, the air curtain air inlet 21 is easy to be blocked, and the air cannot smoothly enter the air curtain air inlet 21, thereby affecting the formation effect of the air curtain. Therefore, the air curtain air inlet 21 is preferably arranged on the side of the side baffle 13, and the space around this position is relatively open. Whether it is natural air in the kitchen or hot air flow generated during cooking, it can enter the air curtain air inlet 21 without obstruction.

[0046] Further, the air curtain air outlet 22 continuously extends on the side baffle 13, or a plurality of air curtain air outlets 22 are arranged at intervals on the side baffle 13.

[0047] Specifically, when the air curtain air outlet 22 continuously extends from one end to the other end along the bottom of the side baffle 13, it forms a complete and uninterrupted air outlet structure. During cooking, the continuously extended air curtain air outlet 22 can generate uniform, stable and continuous airflow, thereby forming a tight air curtain.

[0048] When multiple air curtain outlets 22 are spaced along the bottom of the side baffle 13 from one end to the other, the distance between each outlet can be the same or different. In this way, by controlling the setting density of the air curtain outlets 22 at different positions, the intensity and coverage of the air curtain at different positions can be flexibly adjusted, avoiding unnecessary large-area and high-intensity air curtains, thereby reducing the energy consumption of the air curtain fan 25.

[0049] Further, referring to Figure 1 and Figure 4 , the front end of the smoke collecting hood 1 is provided with a front baffle 14, and the bottom of both sides of the front baffle 14 is provided with a second air curtain outlet 23, wherein the second air curtain outlet 23 is connected with the air curtain cavity 12.

[0050] In this way, the air entering the air curtain cavity 12 will flow to the air curtain outlets 22 at the bottom of the side baffles 13 on both sides of the smoke collecting hood 1 under the action of the air curtain fan 25, forming air curtains on both sides; another part of the airflow will flow to the second air curtain outlets 23 at the bottom of both sides of the front baffle 14. The airflow ejected from the second air curtain outlet 23 will form a forward air curtain at the front end of the smoke collecting hood 1.

[0051] During cooking, the generated oil fume rises to the oil fume suction area 15. At this time, the air curtains on both sides of the smoke collecting hood 1 and the air curtain at the front end jointly play a role to restrict the oil fume within an oil fume suction area 15. The air curtains on both sides prevent the oil fume from spreading to the left and right, and the air curtain at the front end prevents the oil fume from overflowing forward, so that the oil fume can be more concentratedly sucked into the smoke collecting cavity 11 by the suction force of the range hood, and then discharged to the outside through the smoke exhaust system.

[0052] Further, referring to Figure 6 , the bottom of the side baffle 13 is provided with an air outlet surface 132, and the air outlet surface 132 gradually inclines downward from one end close to the front baffle 14 to one end away from the front baffle 14.

[0053] Since the air outlet surface 132 gradually inclines downward from one end close to the front baffle 14 to one end away from the front baffle 14, that is, the one end of the air outlet surface 132 close to the front baffle 14 is farther away from the surface of the cooking hob, and the one end of the air outlet surface 132 away from the front baffle 14 is closer to the surface of the cooking hob. Therefore, the air curtain wind force is weaker at the one end close to the front baffle 14 than at the one end away from the front baffle 14.

[0054] Generally, when cooking on the stove, the flame and heat are mainly concentrated in the center and rear side of the stove, and the oil fume is more likely to rise upward and spread to the rear side under the action of the hot airflow. The strong air curtain at the rear side of the cooking hob just conforms to this oil fume diffusion rule and can effectively control the high-risk area of oil fume, improving the accuracy and efficiency of oil fume suction.

[0055] Further, referring toFigure 5 The air curtain assembly 2 further comprises a mounting base 24, and the mounting base 24 is connected to the cavity wall of the air curtain cavity 12, wherein the air curtain fan 25 is mounted on the mounting base 24.

[0056] When assembling, the fan is first mounted on the mounting base 24, and then the mounting base 24 with the fan is integrally mounted on the wall of the air curtain cavity 12, so as to improve the assembly efficiency and reduce the installation difficulty. When the air curtain fan 25 needs to be repaired or replaced due to failure, the entire mounting base 24 can be removed together with the fan from the wall of the air curtain cavity 12, and the fan can be repaired or replaced in a more convenient environment.

[0057] Since the air curtain fan 25 will vibrate during operation, the air curtain fan 25 is connected to the cavity wall of the air curtain cavity 12 through the mounting base 24, which can provide a stable mounting basis for the air curtain fan 25. By mounting the fan on the mounting base 24, the displacement of the fan due to its own vibration during operation can be effectively reduced, and the fan can work stably in a fixed position.

[0058] Further, the range hood comprises an exhaust hood 3, and the exhaust hood 3 is connected to the top of the smoke collecting hood 1, wherein the exhaust hood 3 is provided with an exhaust cavity 31, and the exhaust cavity 31 is in communication with the smoke collecting cavity 11. Figure 3 The exhaust cavity 31 is in communication with the smoke collecting cavity 11.

[0059] Therefore, the oil fume collected from the smoke collecting cavity 11 can directly enter the exhaust cavity 31, avoiding leakage and residue of the oil fume during transmission. Under the action of the strong suction force of the range hood, the oil fume can be quickly discharged outside through this channel, greatly improving the efficiency of the range hood and effectively maintaining the fresh air in the kitchen.

[0060] Further, referring to Figure 3 and Figure 4 The bottom of the smoke collecting hood 1 is provided with an oil fume inlet 16, and the oil fume inlet 16 is in communication with the smoke collecting cavity 11 and the oil fume suction area 15. The exhaust cavity 31 is provided with a fan wheel assembly 32, and the fan wheel assembly 32 is used to suck the air in the oil fume suction area 15 into the smoke collecting cavity 11 and the exhaust cavity 31.

[0061] Specifically, the fan wheel assembly 32 comprises a fan wheel and a motor, and the motor drives the fan wheel to rotate at high speed to generate strong centrifugal force, so as to make the air flow, realize the air in the oil fume suction area 15 into the smoke collecting cavity 11, and further push it into the exhaust cavity 31. In the exhaust cavity 31, the strong power of the fan wheel assembly 32 can effectively overcome the resistance of the oil fume during flow, so as to ensure that the oil fume can be quickly and stably discharged outside through the exhaust pipeline.

[0062] The air curtains form a barrier on both sides of the fume extraction zone 15, effectively preventing the fumes from spreading to the sides. When fumes are generated and rise, the air curtains on both sides confine them to a relatively small area, causing them to flow only towards the fume inlet 16, thus greatly enhancing the fume collection effect.

[0063] Thus, the dual-sided air curtains and the impeller assembly 32 work together. The air curtains limit the spread of oil fumes, allowing the impeller assembly 32 to extract oil fumes more concentratedly and improving the efficiency of suction. At the same time, the negative pressure generated by the impeller assembly 32 further enhances the stability of the dual-sided air curtains, enabling them to better fulfill their role in limiting the spread of oil fumes.

[0064] In addition, a rear baffle is provided at the rear end of the fume hood 1, and an oil collection groove is provided at the bottom of the rear baffle. An oil baffle plate 17 is connected to the rear baffle plate. The oil baffle plate 17 is located below the fume inlet 16, and oil fume absorption areas 15 are formed between the oil baffle plate 17 and the fume inlet 16, and around the oil baffle plate 17 and between the side baffle plate 13 and the front baffle plate 14 of the fume hood 1. The oil baffle plate 17 is used to guide the oil droplets dripping from the fume inlet 16 into the oil collection groove.

[0065] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A double-sided air-curtain range hood, characterized in that: The system includes a smoke hood and an air curtain assembly. The smoke hood is provided with an air curtain inlet and an air curtain outlet. The air curtain inlet is located on the side or top of the smoke hood, and the air curtain outlet is located at the bottom of both sides of the smoke hood. The air curtain assembly includes an air curtain fan, which is located inside the smoke hood and guides the airflow into the smoke hood through the air curtain inlet and out through the air curtain outlet to form an air curtain on both sides of the smoke hood.

2. The double-sided air-curtain range hood according to claim 1, wherein: The bottom of the fume hood is provided with a fume extraction area, and the air curtain is formed on both sides of the fume extraction area.

3. The double-sided air-curtain range hood according to claim 2, wherein: The smoke hood is provided with a smoke collection chamber and an air curtain chamber that are isolated from each other. The smoke collection chamber is connected to the oil fume absorption area. The air curtain chamber is located on both sides of the smoke collection chamber. The air curtain fan is installed in the air curtain chamber. The air curtain inlet and the air curtain outlet are both connected to the air curtain chamber.

4. The double-sided air-curtain range hood according to claim 3, wherein: Both sides of the smoke hood are provided with side baffles, and the side baffles are provided with guide channels, which are connected to the air curtain cavity; the air curtain inlet is located on the side of the side baffle, and the air curtain outlet is located at the bottom of the side baffle and communicates with the guide channels.

5. The double-sided air-curtain range hood according to claim 4, wherein: The air curtain outlets extend continuously on the side baffle, or multiple air curtain outlets are arranged at intervals on the side baffle.

6. The dual-sided air-curtain range hood of claim 4, wherein: The front end of the smoke hood is provided with a front baffle, and the bottom of both sides of the front baffle are provided with second air curtain outlets, which are connected to the air curtain cavity.

7. The double-sided air-curtain range hood according to claim 6, wherein: The bottom of the side baffle is provided with an air outlet surface, which gradually slopes downward from the end near the front baffle to the end away from the front baffle.

8. The dual-sided air-curtain range hood of claim 3, wherein: The air curtain assembly also includes a mounting base, which is connected to the cavity wall of the air curtain cavity, and the air curtain fan is mounted on the mounting base.

9. The dual-sided air-curtain range hood of claim 3, wherein: The range hood includes a smoke exhaust hood connected to the top of the smoke collection hood, and a smoke exhaust chamber inside the smoke exhaust hood, which is connected to the smoke collection chamber.

10. The double-sided air-curtain range hood according to claim 9, wherein: The bottom of the fume hood is provided with an oil fume inlet, which connects the oil fume absorption area and the fume collection chamber; the exhaust chamber is provided with a fan assembly, which is used to draw air from the oil fume absorption area into the fume collection chamber and the exhaust chamber.

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