Range hood

Abstract

The utility model discloses a range hood which comprises an exhaust fume collecting hood, a range hood cover, a range hood cover and a range hood cover plate, wherein an exhaust fume inlet is formed in the front side of the exhaust fume collecting hood; the smoke baffle can open and close the smoke inlet; the movement mechanism comprises a driving mechanism and a transmission mechanism for transmitting the output of the driving mechanism to the smoke barrier; the oil blocking device comprises curtain cloth and a reel, the reel is rotationally arranged in the exhaust fume collecting hood, the curtain cloth is wound on the reel, one end part of the curtain cloth is fixed with the reel, and the other end part of the curtain cloth can extend out of the exhaust fume collecting hood; the reel is in transmission connection with the driving mechanism, so that the reel is driven by the driving mechanism to rotate, and the curtain cloth is unfolded and folded relative to the reel.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment by extracting harmful cooking fumes and exhausting them outdoors, thereby purifying the kitchen air. Existing range hoods only remove rising fumes during cooking, but not the oil splashes. Most of the oil splashes remain on the wall below the range hood. If left unused for extended periods, this not only significantly affects the appearance and hygiene of the kitchen area, but also makes subsequent maintenance very difficult.

[0003] To this end, the existing technology generally adopts the method of adding a curtain under the range hood to block the splashing oil. For example, the Chinese utility model patent with application number 201620155586.3 discloses a range hood with a roller curtain, which includes a casing, and at least one horizontally arranged roller tube on the lower side of the casing that can rotate relative to the casing, the roller tube is connected to the oil mist curtain, and the inner surface of the oil mist curtain is provided with a flame retardant and anti-fouling coating, and the roller tube is connected to a rotating drive mechanism that can drive the roller tube to rotate.

[0004] In the above patent, the roller blinds require an additional motor drive, which results in a complex structure and increased costs. In addition, the curtains need to be provided with positioning structures at the ends to maintain balance, but the positioning structures are not fully utilized. In addition, although the oil will not splash onto the wall, the oil on the curtains still needs to be cleaned manually.

[0005] Therefore, there is room for further improvement. Utility Model Content

[0006] The first technical problem to be solved by the present invention is to provide a range hood in view of the deficiencies in the above-mentioned prior art, which can simplify the movement mechanism of the oil baffle device, thereby reducing costs and reducing control difficulty.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a range hood comprising:

[0008] A smoke collecting hood, the front side of which is provided with a smoke inlet;

[0009] Smoke dampers, capable of opening and closing the smoke inlet;

[0010] a motion mechanism, comprising a drive mechanism and a transmission mechanism for transmitting the output of the drive mechanism to the smoke baffle; and

[0011] An oil blocking device includes a curtain and a reel, wherein the reel is rotatably disposed in the smoke collecting hood, the curtain is wound on the reel, one end of the curtain is fixed to the reel, and the other end of the curtain can extend outside the smoke collecting hood;

[0012] Its characteristics are:

[0013] The reel is in transmission connection with the driving mechanism, so that the reel is driven to rotate by the driving mechanism, so that the curtain is unfolded and retracted relative to the reel.

[0014] By allowing the curtain of the oil shield device to be expanded and folded through the motion mechanism of the smoke shield, there is no need to set up an additional motion mechanism to drive the curtain, which simplifies the structure and reduces costs. Moreover, the expansion and folding of the curtain are synchronized with the opening and closing of the smoke shield (the power on and off of the range hood), and there is no need for additional control of the curtain, which further reduces the control difficulty.

[0015] Furthermore, in order to facilitate the transmission of the torque of the driving mechanism to the reel, the oil retaining device also includes an annular synchronous belt, which is wound around the output end of the driving mechanism and the reel, thereby transmitting the output of the driving mechanism to the reel.

[0016] Furthermore, in order to facilitate the counterweighting of the end of the curtain so that the curtain can smoothly drop to the bottom of the smoke hood when it is unfolded, and the first oil cup can also receive the oil stains on the curtain, the oil blocking device also includes a first oil cup, which is arranged on the end of the curtain that passes through the outside of the smoke hood.

[0017] In order to facilitate the first oil cup to maintain a stable center of gravity when filling oil and avoid tipping over, the first oil cup includes a bottom plate and a top plate, thereby forming a hollow semi-cylindrical shape. The top plate is connected to the curtain, and the cross-section of the bottom plate is a semicircle that bulges away from the top plate.

[0018] In order to facilitate the collection of oil stains on the curtain into the first oil cup, a perforation is provided on the rear side of the smoke hood, and the curtain passes through the perforation to the outside of the smoke hood. A first oil leakage hole is provided on the top plate, and the first oil leakage hole is used to receive the oil stains scraped from the curtain by the part of the smoke hood located at the front edge of the perforation.

[0019] In order to facilitate the collection of the oil scraped off the curtain and located inside the smoke hood, as well as the collection of oil flowing down from the internal wall of the smoke hood and the fan system and fan frame thereon, a second oil cup is provided at the bottom of the smoke hood, and the smoke hood is formed with an inclined portion above the second oil cup, and the inclined portion gradually inclines downward from the back to the front. In the horizontal plane projection, the front end of the inclined portion is located within the range of the second oil cup, and the perforation is opened on the inclined portion.

[0020] Furthermore, a second oil leakage hole is provided on the top plate, and the second oil leakage hole is located on the front side of the connection between the top plate and the curtain. When the curtain is folded, the top plate of the first oil cup fits into the inclined part of the smoke hood, thereby allowing the oil in the first oil cup to flow out into the second oil cup conveniently without the need to clean the first oil cup separately.

[0021] Furthermore, in order to facilitate the curtain to drop below the smoke collecting hood when unfolded, a through hole is provided on the rear side of the smoke collecting hood, and the curtain passes through the through hole to the outside of the smoke collecting hood.

[0022] In order to facilitate the collection of the oil scraped off the curtain and located inside the smoke hood, as well as the collection of oil flowing down from the internal wall of the smoke hood and the fan system and fan frame thereon, a second oil cup is provided at the bottom of the smoke hood, and the smoke hood is formed with an inclined portion above the second oil cup, and the inclined portion gradually inclines downward from the back to the front. In the horizontal plane projection, the front end of the inclined portion is located within the range of the second oil cup, and the perforation is opened on the inclined portion.

[0023] Compared with the existing technology, the advantages of the present invention are: the curtain of the oil shielding device is driven by the motion mechanism of the smoke shield to achieve expansion and contraction, thereby eliminating the need for an additional motion mechanism to drive the curtain, simplifying the structure and reducing costs, and the expansion and contraction of the curtain are synchronized with the opening and closing of the smoke shield (the start and shutdown of the range hood), eliminating the need for additional control of the curtain, and further reducing the control difficulty; by arranging an oil cup at the end of the curtain, it is possible to counterweight the end of the curtain to facilitate its descent, and to collect oil stains on the curtain, and the design of the oil cup allows the oil stains therein to flow out to the oil cup at the bottom of the smoke hood when the curtain is in the folded state, without the need for additional cleaning work, thereby improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a range hood in a closed state according to an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a range hood in a closed state according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of the closed state of the range hood according to the embodiment of the utility model (cross section and Figure 2 parallel);

[0027] Figure 4 for Figure 3 A schematic diagram of the partial I enlargement;

[0028] Figure 5 Schematic diagram of the smoke baffle, oil baffle device and motion mechanism of the range hood according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the range hood in the open state according to an embodiment of the present invention;

[0030] Figure 7 A cross-sectional view of the range hood in an open state according to an embodiment of the present utility model;

[0031] Figure 8 This is a cross-sectional view of the closed state of the range hood according to the embodiment of the utility model (cross section and Figure 7 parallel);

[0032] Figure 9 for Figure 8 A schematic diagram of the partial II enlargement;

[0033] Figure 10 for Figure 8 A schematic diagram of the partial III enlargement. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0035] 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 indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0036] See also Figures 1 to 10 A range hood includes a fume hood 1, a fan frame 2 arranged above the fume hood 1, and a fan system (not shown) arranged in the fan frame 2.

[0037] A smoke inlet 11 is formed on the front side of the smoke hood 1. The range hood also includes a smoke deflector 3 capable of opening and closing the smoke inlet 11, and a motion mechanism for driving the smoke deflector 3 relative to the smoke hood 1. The motion mechanism includes a drive mechanism 41 and a transmission mechanism 42 for transmitting the output of the drive mechanism 41 to the smoke deflector 3. The drive mechanism 41 is preferably a motor. The transmission mechanism 42 is preferably a rocker, crank, or the like. The motion mechanism and the smoke deflector 3 together form a four-bar linkage commonly used in the art.

[0038] In order to block the splashing oil, the range hood also includes an oil blocking device, which includes a curtain 51, a reel 52, a synchronous belt 53 and a first oil cup 54, wherein the reel 52 is rotatably arranged in the smoke hood 1, and extends in the left and right directions, and the axis of rotation also extends in the left and right directions. The curtain 51 is wound on the reel 52, one end of which is fixed to the reel 52, and the other end can be extended to the outside of the smoke hood 1. A through hole 12 is provided on the rear side of the smoke hood 1, and the curtain 51 can pass through the through hole 12 to the outside of the smoke hood 1. The above-mentioned first oil cup 54 is set at the end of the curtain 51 that passes through the outside of the smoke hood 1.

[0039] The motion mechanism's drive mechanism 41 can be a motor with two output shafts, one of which drives the transmission mechanism 42, while the other drives the reel 52. Alternatively, the same output shaft can be used by simply lengthening it. A ring-shaped synchronous belt 53 is wound around the torque output end of the drive mechanism 41 and the reel 52. This transmits the output of the drive mechanism 41 to the reel 52, thereby driving the reel 52 to rotate, thereby expanding or contracting the curtain 51 wound around the reel 52.

[0040] Of course, the synchronous belt 53 may not be used, but other existing transmission methods such as a gear set, a connecting rod assembly, etc. may be used.

[0041] When the range hood is turned off, the curtain 51 is rolled up on the reel 52, and only the end of the curtain 51 connected to the first oil cup 54 and the first oil cup 54 are exposed outside the smoke hood 1. Figure 3 and Figure 4 When the range hood is turned on, the smoke baffle 2 opens, the reel 52 rotates, the curtain 51 unfolds, and slowly descends under the gravity of the first oil cup 54, thereby achieving the oil blocking function when the range hood is working.

[0042] A second oil cup 6 is provided at the bottom of the fume hood 1. An inclined portion 13 is formed above the fume hood 1, corresponding to the second oil cup 6. The inclined portion 13 gradually slopes downward from the rear to the front. In horizontal projection, the front end of the inclined portion 13 is located within the second oil cup 6. The aforementioned through-hole 12 is formed in the inclined portion 13.

[0043] During the above-mentioned closing process, the curtain 51 will contact the front edge of the perforation 12 of the smoke hood 1 during the rising process, so that the oil stains on the curtain 51 will be scraped off, and part of it will flow along the inclined portion 13 of the smoke hood 1 into the second oil cup 6 at the bottom of the smoke hood 1, and another part will flow along the curtain 51 into the first oil cup 54 at the bottom of the curtain 51.

[0044] The first oil cup 54 includes a bottom plate 541 and a top plate 542, which together form a roughly hollow semi-cylindrical shape. When the curtain 51 is in the unfolded state (including fully unfolded and half-expanded), when the first oil cup 54 is balanced by gravity, the cross-section of the bottom plate 541 is a downwardly convex semicircular shape, thereby maintaining the center of gravity when holding oil and preventing oil spillage caused by tipping. The top plate 542 is set on the top of the bottom plate 541 and is connected to the curtain 51. The top plate 542 is provided with a first oil leakage hole 543 and a second oil leakage hole 544. The first oil leakage hole 543 is a long strip-shaped hole that extends in the left and right direction along the end portion where the curtain 51 is connected to the top plate 542. When the curtain 51 is unfolded, the first oil leakage hole 543 is located on the front side of the curtain 51 so that the oil scraped off the curtain 51 by the smoke hood 1 can enter the interior of the first oil cup 54 through the first oil leakage hole 543. The second oil leakage hole 544 is located in front of the first oil leakage hole 543. When the curtain 51 is in the folded state, the top plate 542 of the first oil cup 54 fits in with the inclined portion 13 of the smoke hood 1. Since the first oil cup 54 is inclined at this time, the oil in the first oil cup 54 can flow out from the second oil leakage hole 544 and flow downward along the lower surface of the inclined portion 13 into the second oil cup 6, thereby eliminating the need for additional pouring action.

Claims

1. A range hood comprising: A smoke collecting hood (1) is provided with a smoke inlet (11) on the front side; a smoke baffle (3) capable of opening and closing the smoke inlet (11); A motion mechanism comprising a driving mechanism (41) and a transmission mechanism (42) for transmitting the output of the driving mechanism (41) to the smoke baffle (3); and An oil blocking device comprises a curtain (51) and a reel (52), wherein the reel (52) is rotatably arranged in a smoke collecting hood (1), the curtain (51) is wound on the reel (52), one end of the curtain (51) is fixed to the reel (52), and the other end of the curtain (51) can extend outside the smoke collecting hood (1); Its characteristics are: The reel (52) is connected to the driving mechanism (41) in a transmission manner, so that the reel (52) is driven to rotate by the driving mechanism (41), so that the curtain (51) is unfolded and retracted relative to the reel (52).

2. The range hood according to claim 1, characterized in that: The oil blocking device further comprises an annular synchronous belt (53) which is wound around the output end of the driving mechanism (41) and the reel (52), thereby transmitting the output of the driving mechanism (41) to the reel (52).

3. The range hood according to claim 1 or 2, characterized in that: The oil blocking device further comprises a first oil cup (54), and the first oil cup (54) is arranged on the end of the curtain (51) passing through to the outside of the smoke collecting hood (1).

4. The range hood according to claim 3, characterized in that: The first oil cup (54) includes a bottom plate (541) and a top plate (542), thereby forming a hollow semi-cylindrical shape. The top plate (542) is connected to the curtain (51). The cross section of the bottom plate (541) is semi-circular and convex in a direction away from the top plate (542).

5. The range hood according to claim 4, characterized in that: The rear side of the smoke hood (1) is provided with a through hole (12), and the curtain (51) passes through the through hole (12) to the outside of the smoke hood (1). The top plate (542) is provided with a first oil leakage hole (543), and the first oil leakage hole (543) is used to receive the oil scraped from the curtain (51) by the portion of the smoke hood (1) located at the front side edge of the through hole (12).

6. The range hood according to claim 5, characterized in that: A second oil cup (6) is provided at the bottom of the smoke collecting hood (1), and an inclined portion (13) is formed on the smoke collecting hood (1) above the second oil cup (6). The inclined portion (13) gradually inclines downward from the back to the front. In horizontal plane projection, the front end of the inclined portion (13) is located within the range of the second oil cup (6), and the through hole (12) is opened on the inclined portion (13).

7. The range hood according to claim 6, characterized in that: A second oil leakage hole (544) is also provided on the top plate (542). The second oil leakage hole (544) is located at the front side of the connection between the top plate (542) and the curtain (51). When the curtain (51) is folded, the top plate (542) of the first oil cup (54) fits in with the inclined portion (13) of the smoke hood (1).

8. The range hood according to claim 1 or 2, characterized in that: A through hole (12) is provided on the rear side of the smoke collecting hood (1), and the curtain (51) passes through the through hole (12) to the outside of the smoke collecting hood (1).

9. The range hood according to claim 8, characterized in that: A second oil cup (6) is provided at the bottom of the smoke collecting hood (1), and an inclined portion (13) is formed on the smoke collecting hood (1) above the second oil cup (6). The inclined portion (13) gradually inclines downward from the back to the front. In horizontal plane projection, the front end of the inclined portion (13) is located within the range of the second oil cup (6), and the through hole (12) is opened on the inclined portion (13).

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