A range hood with dual exhaust ducts

Abstract

This invention provides a range hood with dual flues, including a body, a filter mechanism, a fan, and a flue partition structure. The body has a flue with a lower opening, and the fan's outlet extends out of the body. The flue partition structure divides the flue into two flues, front and rear, and divides the flue opening into two flue ports corresponding to the two flues. The fan is disposed in one of the flues, and the fan's outlet is offset relative to the flue opening. The flue port corresponding to the one closer to the fan's outlet extends above the fan's inlet. The flue partition structure has a through hole at least at the position corresponding to the fan's inlet, allowing gas in the flue corresponding to the one closer to the fan's outlet to flow to the other flue. In this range hood, two flues of different lengths are formed within the duct. After the fumes enter the area of ​​the inlet port relatively close to the fan's outlet, they need to flow through the relatively longer flue to reach the fan's inlet.

Description

Technical Field

[0001] This invention relates to the field of range hood devices, and in particular to a range hood with dual exhaust ducts. Background Technology

[0002] Currently, due to the limited placement of the blower in range hoods on the market, the air inlet of the blower is located on the center line of the range hood, while the air outlet can only be located on one side of the range hood (on the side of the center line). This means that the air inlet and outlet of the blower are not on the same vertical axis. The area closer to the air outlet of the blower has a shorter airflow distance, so the suction in this area is stronger. As a result, the suction at the bottom of the range hood is uneven, with one side having strong suction and the other side having weak suction. The air pressure on both sides is inconsistent, resulting in uneven suction. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a range hood with dual flues. By setting a flue separation structure in the duct, two flues of different lengths are formed in the duct. After the oil fumes enter the part of the smoke inlet that is relatively close to the air outlet of the fan, they need to flow through the relatively longer flue to reach the air inlet of the fan.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A range hood with dual flues includes a body, a filter mechanism, a fan, and a flue partition structure. The body has a flue with an opening at the bottom. The filter mechanism covers the opening of the flue. The fan is located at the top of the flue, and its outlet extends out of the upper part of the body. The flue partition structure divides the flue into two flues, front and rear, and divides the opening of the flue into two flue openings corresponding to the two flues. The fan is located in one of the flues, and its outlet is eccentrically positioned relative to the opening of the flue. The flue corresponding to the flue opening closest to the fan outlet extends above the fan inlet. The flue partition structure has at least one through hole at the position corresponding to the fan inlet for the gas in the flue corresponding to the flue opening closest to the fan outlet to flow to the other flue.

[0006] Compared with the prior art, the range hood with dual flues of the present invention has the following beneficial effects:

[0007] (1) By setting a flue partition structure in the duct, the duct is divided into two flues, front and rear, and the duct opening is divided into two flue openings corresponding to the two flues. The flue corresponding to the flue opening that is relatively close to the fan outlet extends to the top of the fan inlet. This causes the fumes entering the flue opening that is relatively close to the fan outlet to flow along the flue corresponding to that flue opening and flow to a predetermined position before entering the other flue and flowing to the fan inlet. This reduces the flow rate of the fumes entering the flue opening that is relatively close to the fan outlet, making the air pressure in the two flues consistent and achieving uniform suction.

[0008] (2) Existing range hoods have inconsistent suction in different areas of the smoke inlet, which can easily cause oil fumes to escape in areas where the suction is unstable. This invention adjusts the flow rate of oil fumes into the flue opening that is relatively close to the fan outlet, so that the suction in the two flues is consistent, thereby overcoming the problem of oil fumes escaping due to airflow turbulence and improving the efficiency of oil fume extraction of this invention.

[0009] (3) In this invention, the oil fumes are separated into two flues after entering the range hood, thereby dispersing the airflow formed by the oil fumes, slowing down the oil fumes (reducing the wind speed), and reducing noise.

[0010] Furthermore, the flue partition structure divides the air duct into a front flue and a rear flue, and divides the air duct opening into a left flue opening and a right flue opening. The left flue opening is connected to the front flue, and the right flue opening is connected to the rear flue. The fan is located in the front flue, and the fan outlet is eccentrically positioned to the right relative to the air duct opening.

[0011] The above configuration means that the fumes entering the right-side flue and the rear flue need to travel a relatively long distance before entering the fan's air inlet.

[0012] Furthermore, the flue partition structure includes a first partition member and a second partition member. The first partition member is located at the lower part of the air duct and divides the opening of the air duct into a left flue opening and a right flue opening. The second partition member is located at the upper end of the first partition member and extends to the upper part of the air duct. The second partition member divides the air duct into a front flue and a rear flue. The second partition member has the through hole at least at the position corresponding to the air inlet of the fan.

[0013] The flue partition structure consists of two components: a first partition component and a second partition component. It has a simple structure, readily available components, and low cost, making it easy for production personnel to install the flue partition structure into the machine body and reducing production costs.

[0014] Furthermore, the first partition member is provided with a first partition portion and a blocking portion, the first partition portion being located in the middle of the opening; the second partition member is provided with a second partition portion and a guide portion, the second partition portion extending from the upper end of the first partition portion to the upper part of the air duct, the guide portion covering the upper end of the first partition portion and connecting to the lower end of the second partition portion, the blocking portion being located on the side of the first partition portion opposite to the guide portion and covering the lower end of the second partition portion; the second partition portion is provided with the through hole at least at the position corresponding to the air inlet of the fan.

[0015] The above-mentioned configuration utilizes the first partition, guide, and second partition to enclose the inner wall of the air duct to form the right side flue opening and the rear flue, and uses a baffle plate to separate the left side flue opening and the rear flue. The design is ingenious, making full use of the internal structure of the range hood and saving materials.

[0016] Furthermore, the second partition is provided with a plurality of through holes at intervals.

[0017] The above-mentioned configuration allows the fumes entering the rear flue to be evenly dispersed before flowing into the front flue (diversion effect), achieving the intersection of the airflow directions of the two flues. This effectively reduces the wind speed of the flue with higher wind speed (based on the principle of airflow), balancing the wind speed and wind pressure of the two flues. Consequently, the suction force at the two flue openings remains consistent, and the overall wind speed is reduced. This further solves the problem of fumes easily escaping and achieves the effect of reducing noise. In addition, the uniform wind speed of the two flues reduces noise generation, and the second partition is filled with through holes (the principle of noise reduction holes, causing noise waves to interfere with the refracted sound waves), which effectively blocks the outward propagation of noise.

[0018] Furthermore, the first and second partition components are integrally formed.

[0019] The above setup reduces the difficulty of installing the flue partition structure into the air duct, thereby reducing installation costs.

[0020] Furthermore, the flue gas separation structure includes a first partition, a guide plate, a second partition, and a baffle plate. The first partition is located in the middle of the opening to divide the opening of the air duct into two flue gas inlets. The second partition is located on the rear side of the fan and extends from the upper end of the first partition to the upper part of the flue gas to divide the air duct into two flues. The guide plate covers the upper end of the first partition and connects to the lower end of the second partition. The baffle plate is located on the side of the first partition opposite to the guide plate and covers the lower end of the second partition. The second partition has the through hole at least at the position corresponding to the air inlet of the fan.

[0021] The flue partition structure consists of four components, which reduces the production difficulty of the flue partition structure and improves the installation accuracy of the components, effectively reducing production costs.

[0022] Furthermore, the second partition plate is provided with a plurality of through holes at intervals.

[0023] Furthermore, the fan is located in the flue relatively forward, and there is a distance between the rear of the fan and the flue separation structure.

[0024] The above arrangement allows space between the relatively rear flue and the fan. On the one hand, it increases the distance that the oil fumes from the relatively rear flue need to flow to the fan inlet, thereby reducing the flow velocity of the oil fumes from the relatively rear flue. On the other hand, it allows the oil fumes from the two flues to merge before flowing into the fan inlet, avoiding the fan from generating excessive noise due to two different airflows entering the fan.

[0025] Furthermore, a distance is left between the fan and the front wall of the duct.

[0026] Space is provided on both the front and rear sides of the fan for the oil fumes to flow in, so that the oil fumes can be diverted into the fan and avoid the fan shaking and the large noise caused by the airflow rubbing against the air duct when the oil fumes flow into the fan through only one area. Attached Figure Description

[0027] Figure 1 This is a front view of the present invention;

[0028] Figure 2 This is a bottom view of the present invention;

[0029] Figure 3 This is an exploded view of the present invention;

[0030] Figure 4 This is a rear-angle sectional view of the present invention;

[0031] Figure 5 This is a first sectional view of the side of the present invention;

[0032] Figure 6 This is a second sectional view of the side of the present invention.

[0033] Label Explanation:

[0034] 1. Body, 2. Filter mechanism, 3. Fan, 4. Air duct, 5. Opening, 6. Front flue, 7. Rear flue, 8. Left flue opening, 9. Right flue opening, 10. First partition, 11. Guide, 12. Second partition, 13. Blocking part, 14. Through hole, 15. Second connecting part, 16. First connecting part. Detailed Implementation

[0035] The embodiments of the present invention are described below with reference to the accompanying drawings:

[0036] Example 1

[0037] See Figures 1 to 6This embodiment of a range hood with dual flues includes a body 1, a filter mechanism 2, a fan 3, and a flue partition structure. The body 1 has a flue 4 with a lower opening 5. The filter mechanism 2 covers the opening 5 of the flue 4. The fan 3 is located on the upper part of the flue 4, and the air outlet of the fan 3 extends out of the upper end of the body 1. The flue partition structure is used to divide the flue 4 into two flues, front and rear, and to divide the opening 5 of the flue 4 into two flue openings corresponding to the two flues. The fan 3 is located in one of the flues, and the air outlet of the fan 3 is eccentrically positioned relative to the opening 5 of the flue 4. The flue corresponding to the flue opening closer to the air outlet of the fan 3 extends to the air inlet of the fan 3. The flue partition structure has at least one through hole 14 at the position corresponding to the air inlet of the fan 3 for the gas in the flue corresponding to the flue opening closer to the air outlet of the fan 3 to flow to the other flue.

[0038] See Figures 1 to 6 The flue partition structure divides the air duct 4 into a front flue 6 and a rear flue 7, and divides the opening 5 of the air duct 4 into a left flue opening 8 and a right flue opening 9. The left flue opening 8 is connected to the front flue 6, and the right flue opening 9 is connected to the rear flue 7. The fan 3 is located in the front flue 6, and the air outlet of the fan 3 is eccentrically set to the right relative to the opening 5 of the air duct 4.

[0039] The above configuration means that the fumes entering the right flue 9 and the rear flue 7 need to travel a relatively long distance before entering the air inlet of the fan 3.

[0040] See Figures 2 to 6 The flue partition structure includes a first partition member and a second partition member. The first partition member is located at the lower part of the air duct 4 and divides the opening 5 of the air duct 4 into a left flue opening 8 and a right flue opening 9. The second partition member is located at the upper end of the first partition member and extends to the upper part of the air duct 4. The second partition member divides the air duct 4 into a front flue 6 and a rear flue 7. The second partition member has the through hole 14 at least at the position corresponding to the air inlet of the fan 3.

[0041] The flue partition structure consists of two components: a first partition component and a second partition component. The structure is simple, the components are readily available, and the cost is low, which makes it easy for production personnel to install the flue partition structure into the machine body 1 and reduce production costs.

[0042] Furthermore, the first partition member is provided with a first partition 10 and a blocking part 13, the first partition 10 being disposed in the middle of the opening 5; the second partition member is provided with a second partition 12 and a guide part 11, the second partition 12 extending from the upper end of the first partition 10 to the upper part of the air duct 4, the guide part 11 covering the upper end of the first partition 10 and connecting to the lower end of the second partition 12, the blocking part 13 being disposed on the side of the first partition 10 opposite to the guide part 11 and covering the lower end of the second partition 12; the second partition 12 is provided with the through hole 14 at least at the position corresponding to the air inlet of the fan 3.

[0043] The above-mentioned arrangement utilizes the first partition 10, the guide 11, and the second partition 12 to enclose the inner wall of the air duct 4 to form the right side flue 9 and the rear side flue 7, and uses a baffle plate to separate the left side flue 8 and the rear side flue 7. The design is ingenious, makes full use of the internal structure of the range hood, and saves materials.

[0044] See Figures 2 to 4 The second partition 12 is provided with a plurality of through holes 14 at intervals.

[0045] The above-mentioned arrangement allows the fumes entering the rear flue 7 to be evenly dispersed before flowing into the front flue 6 (diversion effect), achieving the intersection of the airflow directions of the two flues, effectively reducing the wind speed of the flue with higher wind speed (according to the principle of airflow), so that the wind speed and wind pressure of the two flues are balanced, thereby keeping the suction of the two flue openings consistent, and reducing the overall wind speed, further solving the problem of easy escape of fumes and achieving the effect of reducing noise. In addition, the uniform wind speed of the two flues can reduce the generation of noise, and the second partition 12 is full of through holes 14 (noise reduction hole principle, so that the noise wave interferes with the refracted sound wave), which can effectively block the outward transmission of noise.

[0046] In other embodiments, the guide portion 11 is provided with a plurality of the aforementioned through holes 14 at intervals.

[0047] In other embodiments, a plurality of through holes 15 are arranged at intervals on the first partition 10 and the blocking part 13.

[0048] The diameter of the through hole 14 and the through hole 15 is 10-50mm, and the distance between adjacent through holes 14 and adjacent through holes 15 is 30-80mm, thereby controlling the flow rate of the oil fumes from the rear flue 7 into the front flue 6.

[0049] In other embodiments, the first partition 10 is vertically arranged, and the guide 11 is inclined upward from the front side of the air duct 4 to the rear side of the air duct 4, thereby guiding the oil fumes from the right side flue 9 to the rear flue 7. The angles of the first partition 10 and the guide 11 can be adjusted according to actual needs and are not limited to the above-mentioned arrangement.

[0050] The above arrangement allows the fumes to enter the right flue 9 and the rear flue 7 along the guidance of the first partition 10 and the guide 11, thereby improving the fume extraction effect.

[0051] The first and second partition components are made of metal sheets.

[0052] The lowest point of the fan 3 is located above the first partition 10. This arrangement ensures that the airflow entering the rear flue 7 must pass through at least the first partition 10 and the guide 11 before entering the fan 3, effectively extending the oil fume flow distance and thus reducing the oil fume flow velocity.

[0053] The second partition 12 is located at the lower end of the blocking part 13 and is inclined or bent towards the front of the air duct 4 to form the second connecting part 16. The second connecting part 16 is located at the front end of the blocking part 13, and the rear end of the blocking part 13 extends towards the lower part of the air duct 4 to form the first connecting part 17. The first partition 10 is connected to the first connecting part 17.

[0054] See Figures 5 to 6 Fan 3 is located in the flue relatively forward, and there is a distance between the rear of fan 3 and the flue separation structure.

[0055] The above arrangement allows for space between the relatively rear flue and the fan 3. On the one hand, it increases the distance for the oil fumes from the relatively rear flue to flow to the air inlet of the fan 3, thereby reducing the flow velocity of the oil fumes from the relatively rear flue. On the other hand, it allows the oil fumes from the two flues to merge before flowing into the air inlet of the fan 3, avoiding the fan 3 from generating excessive noise due to two different airflows entering the fan 3.

[0056] See Figures 5 to 6 There is a distance between the fan 3 and the front side wall of the air duct 4.

[0057] Space is provided on both the front and rear sides of the fan 3 for the oil fumes to flow in, so that the oil fumes can be diverted into the fan 3, avoiding the fan 3 from shaking and the large noise caused by the airflow rubbing against the air duct 4 due to the oil fumes flowing into the fan 3 through only one area.

[0058] The filter mechanism 2 is a common structure in existing range hoods and is not the main inventive point of this invention, so it will not be described in detail here.

[0059] Compared with the prior art, the range hood with dual flues of the present invention has the following beneficial effects:

[0060] (1) By setting a flue partition structure in the air duct 4, the air duct 4 is divided into two flues, front and rear, and the opening 5 of the air duct 4 is divided into two flue openings corresponding to the two flues. The flue corresponding to the flue opening that is relatively close to the air outlet of the fan 3 extends to the air inlet of the fan 3, so that the oil fumes entering the flue opening that is relatively close to the air outlet of the fan 3 need to flow along the flue corresponding to the flue opening and flow to a predetermined position before entering the other flue before flowing to the air inlet of the fan 3. This reduces the flow rate of the oil fumes entering the flue opening that is relatively close to the air outlet of the fan 3, makes the air pressure in the two flues consistent, and achieves uniform suction.

[0061] (2) Existing range hoods have inconsistent suction in different areas of the smoke inlet, which can easily cause oil fumes to escape in areas where the suction is unstable. This invention adjusts the flow rate of oil fumes into the flue that is relatively close to the air outlet of the fan 3, so that the suction in the two flues is consistent, thereby overcoming the problem of oil fumes escaping due to airflow turbulence and improving the efficiency of oil fume extraction of this invention.

[0062] (3) In this invention, the oil fumes are separated into two flues after entering the range hood, thereby dispersing the airflow formed by the oil fumes, slowing down the oil fumes (reducing the wind speed), and reducing noise.

[0063] Example 2

[0064] This embodiment is another configuration of Embodiment 1. The difference between this embodiment and Embodiment 1 lies in the configuration method of the flue partition structure.

[0065] In this embodiment, the first partition member and the second partition member are integrally formed.

[0066] The above setup reduces the difficulty of installing the flue partition structure into the air duct, thereby reducing installation costs.

[0067] The accompanying drawings of this improved solution are not shown in this specification, but this improved solution is still within the protection scope of the claims of this invention.

[0068] Example 3

[0069] This embodiment is another configuration of Embodiment 1. The difference between this embodiment and Embodiment 1 lies in the configuration method of the flue partition structure.

[0070] In this embodiment, the flue partition structure includes a first partition, a guide plate, a second partition, and a baffle plate. The first partition is located in the middle of the opening to divide the opening of the air duct into two flue openings. The second partition is located on the rear side of the fan and extends from the upper end of the first partition to the upper part of the flue to divide the air duct into two flues. The guide plate covers the upper end of the first partition and connects to the lower end of the second partition. The baffle plate is located on the side of the first partition opposite to the guide plate and covers the lower end of the second partition. The second partition has the through hole at least at the position corresponding to the air inlet of the fan.

[0071] The flue partition structure consists of four components, which reduces the production difficulty of the flue partition structure and improves the installation accuracy of the components, effectively reducing production costs.

[0072] The second partition plate is provided with a plurality of through holes at intervals.

[0073] The accompanying drawings of this improved solution are not shown in this specification, but this improved solution is still within the protection scope of the claims of this invention.

[0074] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A range hood with dual flues, characterized in that, The device includes a body, a filter mechanism, a fan, and a flue partition structure. The body has a duct with an opening at the bottom. The filter mechanism covers the opening of the duct. The fan is located at the top of the duct, and the fan's outlet extends out of the upper part of the body. The flue partition structure is used to divide the duct into two flues, front and rear, and to divide the opening of the duct into two flue openings corresponding to the two flues. The fan is installed in one of the flues. The fan outlet is eccentrically positioned relative to the opening of the flue. The flue corresponding to the flue outlet that is relatively close to the fan outlet extends to the top of the fan inlet. The flue partition structure has a through hole at least at the position corresponding to the fan inlet for the gas in the flue corresponding to the flue outlet that is relatively close to the fan outlet to flow to the other flue.

2. The range hood with dual flues according to claim 1, characterized in that, The flue partition structure divides the air duct into a front flue and a rear flue, and divides the air duct opening into a left flue opening and a right flue opening. The left flue opening is connected to the front flue, and the right flue opening is connected to the rear flue. The fan is located inside the front flue, and the fan outlet is offset to the right relative to the opening of the flue.

3. A range hood with dual flues according to claim 2, characterized in that, The flue separation structure includes a first separation member and a second separation member. The first separation member is located at the lower part of the air duct and separates the opening of the air duct into a left flue opening and a right flue opening. The second separation member is located at the upper end of the first separation member and extends to the upper part of the air duct. The second separation member separates the air duct into a front flue and a rear flue. The second partition member has the through hole at least at the position corresponding to the air inlet of the fan.

4. A range hood with dual flues according to claim 3, characterized in that, The first partition member has a first partition and a blocking part, the first partition being located in the middle of the opening; the second partition member has a second partition and a guide part, the second partition extending from the upper end of the first partition to the upper part of the air duct, the guide part covering the upper end of the first partition and connecting to the lower end of the second partition, and the blocking part being located on the side of the first partition opposite to the guide part and covering the lower end of the second partition. The second partition has the through hole at least at the position corresponding to the air inlet of the fan.

5. A range hood with dual flues according to claim 4, characterized in that, The second partition is provided with a plurality of through holes at intervals.

6. A range hood with dual flues according to any one of claims 3 to 5, characterized in that, The first and second partition components are integrally formed.

7. A range hood with dual flues according to claim 2, characterized in that, The flue partition structure includes a first partition, a guide plate, a second partition, and a baffle plate. The first partition is located in the middle of the opening to divide the opening of the air duct into two flue openings. The second partition is located behind the fan and extends from the upper part of the first partition to the upper part of the flue to divide the air duct into two flues. The guide plate covers the upper part of the first partition and connects to the lower part of the second partition. The baffle plate is located on the side of the first partition opposite to the guide plate and covers the lower part of the second partition. The second partition plate has the through hole at least at the position corresponding to the air inlet of the fan.

8. A range hood with dual flues according to claim 7, characterized in that, The second partition plate is provided with a plurality of through holes at intervals.

9. A range hood with dual flues according to claim 1, characterized in that, The fan is located in the flue relatively forward, and there is a distance between the rear of the fan and the flue partition structure.

10. A range hood with dual flues according to claim 9, characterized in that, There is a distance between the fan and the front wall of the air duct.

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