CN113324270A - Smoke exhaust ventilator - Google Patents

Abstract

The invention relates to the technical field of oil fume suction equipment, in particular to a range hood. The range hood comprises a fume collecting hood, a guide plate and two oil screens; the guide plate and the two oil nets cover the smoke inlet of the smoke collecting hood, the guide plate is located between the two oil nets, and the two oil nets and the guide plate enclose a first smoke collecting groove with a downward opening. The range hood provided by the invention has the advantages that the oil smoke flow rate near the smoke inlet of the smoke collecting cover is low, the oil smoke is not easy to escape, and the oil smoke suction effect is good.

Description

Smoke exhaust ventilator

Technical Field

The invention relates to the technical field of oil fume suction equipment, in particular to a range hood.

Background

At present, range hood is all installed to many culinary art occasions to improve the culinary art environment, promote culinary art person's experience degree.

However, when the existing range hood (such as a ceiling range hood) works, the flow velocity of the oil smoke near the smoke inlet of the smoke collecting hood is large, so that the problem of serious smoke leakage exists, and the oil smoke absorption effect is poor.

In summary, it is an urgent technical problem to be solved by those skilled in the art how to overcome the above-mentioned defects of the existing range hood.

Disclosure of Invention

The invention aims to provide a range hood to solve the technical problem of poor oil fume suction effect of the range hood in the prior art.

The invention provides a range hood which comprises a fume collecting hood, a guide plate and two oil screens.

The guide plate and two the oil net all covers the smoke inlet of collection petticoat pipe is located two the guide plate is located two between the oil net, and two the oil net with the guide plate encloses into the first cigarette groove that gathers that the opening is down.

Preferably, as an implementation mode, the bottom of the volute of the range hood is detachably connected with the housing of the range hood; the volute comprises a housing, and is characterized in that a positioning hole is formed in a top plate of the housing, a flange fixing ring is fixedly connected to an air outlet in the top of the volute, and the flange fixing ring can be clamped into the positioning hole.

Preferably, as an implementable mode, the volute is removable from a smoke inlet of the smoke collection hood.

Preferably, as an implementation mode, a sealing ring is fixedly connected to the flange fixing ring, and the sealing ring is used for abutting against and sealing the positioning hole.

Preferably, as an implementation manner, a first support frame is fixedly connected to the housing, a second support frame is fixedly connected to the bottom of the volute, and the first support frame is in threaded connection with the second support frame through a threaded connection piece.

Preferably, as an implementation mode, the inside of the flange fixing ring is provided with a rotating shaft, a check valve plate and a limiting part, two ends of the rotating shaft are respectively fixedly connected with the side wall of the flange fixing ring, the check valve plate is in running fit with the rotating shaft, the limiting part is fixedly connected with the rotating shaft, and the limiting part is used for limiting the check valve plate above the rotating shaft.

Preferably, as an embodiment, the height of the first smoke gathering groove is greater than 10 mm.

Preferably, as an embodiment, the oil screen has a first portion disposed opposite to the smoke inlet of the smoke collecting hood, and a second portion disposed opposite to the top surface of the smoke collecting chamber of the smoke collecting hood.

The first part of two oil net with the guide plate encloses into first collection cigarette groove, two the oil net the second part all with the top surface of collection cigarette chamber encloses into the opening orientation the second collection cigarette groove of the smoke inlet of collection petticoat pipe.

Preferably, as an implementation mode, an oil cup is installed at the bottom of the rear end of the smoke collecting hood.

The oil screen is arranged in an inclined manner from front to back to bottom, and oil can flow into the oil cup along the oil screen; and/or the guide plate is arranged in a downward inclined mode from front to back, and oil can flow into the oil cup along the guide plate.

Preferably, as an implementation mode, the oil net and the deflector are both detachably connected with the fume collecting hood.

The invention has the beneficial effects that:

the invention provides a range hood, wherein a guide plate and two oil nets are covered at a smoke inlet of a smoke collecting hood, the guide plate is positioned between the two oil nets, and the two oil nets and the guide plate can enclose a first smoke collecting groove with a downward opening. After the oil smoke enters a smoke collecting cavity of the smoke collecting cover, part of oil pressure enters a first smoke collecting groove and enters an oil screen along a guide plate; and part of the oil smoke can directly enter the oil screen, and the oil smoke filtered by the oil screen can be sucked into the smoke inlet of the smoke collecting hood.

It should be noted that the oil smoke in the first smoke collecting groove can be decelerated under the blocking action of the guide plate and the oil screens at the two sides, so that the oil smoke flow rate near the smoke inlet of the smoke collecting cover can be reduced, the problem of oil smoke escape is relieved, and the oil smoke absorption effect of the range hood is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

fig. 2 is an exploded view of a range hood according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structural diagram of a range hood provided in an embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic partial structure diagram of a range hood according to an embodiment of the present invention.

Icon:

100-a smoke collecting hood;

200-a flow guide plate;

300-oil mesh;

400-a first smoke gathering groove;

500-oil cup;

600-a housing; 610-a top plate; 620-a back plate; 630-a first support frame;

700-a volute; 710-flange retainer ring; 720-a second support frame; 730-check valve plate; 800-sealing ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "lower", "vertical", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1 to 3, the present embodiment provides a range hood, which includes a smoke collecting hood 100, a flow guide plate 200 and two oil nets 300, wherein the flow guide plate 200 and the two oil nets 300 both cover a smoke inlet of the smoke collecting hood 100, the flow guide plate 200 is located between the two oil nets 300, and the two oil nets 300 and the flow guide plate 200 can enclose a first smoke collecting groove 400 with a downward opening. After the oil smoke enters the smoke collecting cavity of the smoke collecting cover 100, part of the oil pressure enters the first smoke collecting groove 400 and enters the oil screen 300 along the guide plate 200; part of the oil smoke directly enters the oil screen 300, and the oil smoke filtered by the oil screen 300 is sucked into the smoke inlet of the smoke collecting cover 100.

It should be noted that the oil smoke in the first smoke collecting groove 400 is decelerated by the blocking effect of the guide plate 200 and the oil screens 300 on the two sides, so that the oil smoke flow rate near the smoke inlet of the smoke collecting cover 100 can be reduced, the problem of oil smoke escape is alleviated, and the oil smoke absorption effect of the range hood is further improved.

Referring to fig. 3 to 5, on the basis that the oil screen 300 and the guide plate 200 are detachably connected to the fume collecting hood 100, the bottom of the volute 700 of the range hood can be detachably connected to the fume collecting hood 100, meanwhile, a positioning hole is formed in the top plate 610 of the housing 600 of the range hood, a flange fixing ring 710 is fixedly connected to the top air outlet of the volute 700, and the flange fixing ring 710 can be clamped into the positioning hole of the top plate 610.

Preferably, referring to fig. 4, a sealing ring 800 may be fixedly attached to a flange fixing ring 710 at the top of the scroll 700 and seal the sealing ring 800 against a positioning hole in the top plate 610 of the housing 600.

It should be noted that, the installation of the sealing ring 800 can bring at least the following three advantages:

first, the positioning effect of the positioning holes on the top plate 610 on the flange fixing ring 710 at the top of the scroll 700 can be improved, and the problem of the shaking of the flange fixing ring 710 in the positioning holes on the top plate 610 can be alleviated.

Second, oil is prevented from dripping from the gap between the flange fixing ring 710 and the positioning hole on the top plate.

Third, the sealing ring 800 may play a role of shock absorption, thereby reducing vibration energy transmitted from the motor in the volute 700 to the housing 600 of the range hood and reducing noise.

Specifically, a flange folded outwards is arranged at the bottom of the flange fixing ring 710, and the sealing ring 800 is arranged in an annular structure with an L-shaped cross section, that is, the sealing ring 800 has a side extending in the transverse direction and a side extending in the longitudinal direction, wherein the side extending in the transverse direction of the sealing ring 800 can be clamped between the flange of the flange fixing ring 710 and the top plate 610, and the side extending in the longitudinal direction of the sealing ring 800 can be clamped between the flange fixing ring 710 and the positioning hole, so that not only the positioning effect of the top plate 610 of the casing 600 on the scroll casing 700 can be improved, but also the structural strength of the matching part of the flange fixing ring 710 and the positioning hole can be improved.

In particular, the sealing ring 800 may be made of a rubber material.

Referring to fig. 3 and 5, a first support frame 630 is fixedly connected to the casing 600, a second support frame 720 is fixedly connected to the bottom of the scroll 700, and the first support frame 630 is threadedly connected to the second support frame 720 through a threaded connection.

It should be noted that the range hood is additionally provided with the first support frame 630 and the second support frame 720, so as to facilitate the detachable connection between the volute 700 and the housing 600; in addition, the first supporting piece and the second supporting piece are fastened together by adopting the threaded connecting piece, so that not only can the connection firmness between the first supporting piece and the second supporting piece be ensured, but also the disassembly is convenient.

Specifically, since the first support frame 630 and the case 600 do not need to be detached, the first support frame 630 and the case 600 can be fixed together by welding, so that the structural strength of the joint of the first support frame 630 and the case 600 can be improved; similarly, since the second support frame 720 and the scroll casing 700 do not need to be detached, the second support frame 720 and the scroll casing 700 can be fixed together by welding, and thus, the structural strength of the joint of the second support frame 720 and the scroll casing 700 can be improved.

In particular, the first support bracket 630 may be secured to the back plate 620 of the housing 600 to facilitate removal of the threaded connection from the front.

Referring to fig. 3 and 4, in the specific structure of the range hood provided in this embodiment, a rotating shaft, a check valve plate 730 and a limiting member may be installed inside the flange fixing ring 710, two ends of the rotating shaft are respectively fixedly connected to the side walls of the flange fixing ring 710, and the check valve plate 730 is rotatably matched with the rotating shaft, so that the check valve plate 730 can rotate around the rotating shaft; meanwhile, the limiting member is fixedly connected with the rotating shaft, and the check valve block 730 is limited above the rotating shaft by the limiting member to prevent the check valve block 730 from reversely rotating, so that the structure of the check valve is simplified and the cost can be reduced on the premise of realizing the function of the check valve.

The height of the first soot collecting groove 400 (i.e., the height difference between the bottom surface of the oil screen 300 and the bottom surface of the baffle 200) is set to be greater than 10mm, so that a superior deceleration effect can be obtained.

Preferably, the height of the first smoke gathering groove 400 is set to 25 mm.

Specifically, the portion of the oil screen 300 opposite to the smoke inlet of the smoke collecting hood 100 is defined as a first portion, and the portion of the oil screen 300 opposite to the top surface of the smoke collecting cavity is defined as a second portion, wherein the first portions of the two oil screens 300 and the guide plate 200 can enclose the first smoke collecting groove 400, the second portions of the two oil screens 300 and the top surface of the smoke collecting cavity can enclose a second smoke collecting groove which is opened toward the smoke inlet of the smoke collecting hood 100, that is, the range hood provided by this embodiment has at least one first smoke collecting groove 400 and two second smoke collecting grooves, so that not only the first smoke collecting groove 400 can decelerate the oil smoke, but also the oil smoke passing through the oil screen 300 can enter the second smoke collecting groove, the oil smoke in the second smoke collecting groove can decelerate under the blocking effect of the oil screen 300 and the top surface of the smoke collecting cavity, thereby further reducing the flow rate of the oil smoke near the smoke inlet of the smoke collecting hood 100, alleviating the problem of oil smoke escape, the oil smoke absorption effect of the range hood is improved.

Referring to fig. 3, an oil cup 500 is installed at the bottom of the rear end of the fume collecting hood 100 to receive oil formed by condensing the fumes.

The oil screen 300 can be arranged in an inclined manner from front to back to face downwards, oil on the oil screen 300 (including oil formed by condensation of oil smoke on the oil screen 300 and oil dropping on the oil screen 300 from other parts) can flow into the oil cup 500 along the oil screen 300 under the action of self gravity, and the risk that oil drops on the oil screen 300 drop on a cooking bench can be reduced.

Specifically, the inclination angle of the oil screen 300 may be set to 10 °.

The guide plate 200 can be arranged in a downward inclined manner from front to back, oil on the guide plate 200 (including oil formed by condensation of oil smoke on the guide plate 200 and oil dropping on the guide plate 200 from other parts) can flow into the oil cup 500 along the guide plate 200 under the action of self gravity, and the risk that the oil dropping on the guide plate 200 drops on the cooking bench can be reduced.

Specifically, the inclination angle of the baffle 200 may be set to 10 °.

Preferably, the oil screen 300 and the guide plate 200 can be detachably connected with the smoke collecting hood 100, so that when the oil screen 300 and the guide plate 200 need to be cleaned, the oil screen 300 and the guide plate 200 can be detached from the smoke collecting hood 100 for cleaning, the cleaning difficulty can be reduced, and the cleaning effect can be improved; further, when the oil screen 300 or the baffle 200 needs to be replaced, it can be smoothly attached and detached.

Specifically, the oil screen 300 and the smoke collecting hood 100 can be detachably connected through a threaded connector, a magnet, a buckle or other connectors, preferably, the buckle is connected, so that the convenience of disassembly is improved; the one end of guide plate 200 links to each other through the bolt with collection petticoat pipe 100, and the other end of guide plate 200 passes through threaded connection spare with collection petticoat pipe 100 and links to each other, during the dismantlement, only needs to twist off threaded connection spare, then directly pulls out guide plate 200's the other end from collection petticoat pipe 100, can realize guide plate 200's dismantlement, and is very convenient.

When the volute 700 needs to be disassembled, the oil screen 300 and the guide plate 200 can be disassembled from the smoke collecting hood 100 firstly, so that a smoke inlet of the smoke collecting hood 100 is open, then the bottom of the volute 700 is disassembled from the shell 600 of the range hood, then the volute 700 is directly pulled downwards along the vertical direction, and the flange fixing ring 710 can be separated from the positioning ring, so that the volute 700 can be disassembled from the shell 600 of the range hood, finally, the volute 700 is directly pulled out from the smoke inlet of the smoke collecting hood 100 to realize the disassembly of the volute 700, the whole range hood does not need to be disassembled, and the convenience of the disassembly of the volute 700 is improved.

In addition, referring to fig. 3, in the range hood provided in this embodiment, the bottom of the spiral case 700 can be extended into the smoke collecting cover 100, so that the height difference between the spiral case 700 and the smoke inlet of the smoke collecting cavity can be reduced, thereby shortening the length of the oil smoke flow path, not only reducing the energy loss and improving the oil smoke suction effect, but also reducing the volume and the consumed materials of the whole range hood, and saving the space and the cost.

In summary, the present invention discloses a range hood, which overcomes many technical defects of the conventional range hood. The range hood provided by the embodiment has the advantages that the oil smoke flow rate near the smoke inlet of the smoke collecting cover 100 is low, the oil smoke is not easy to escape, and the oil smoke suction effect is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A range hood is characterized by comprising a fume collecting hood (100), a guide plate (200) and two oil screens (300);

the guide plate (200) and two oil net (300) all cover the smoke inlet of the smoke collecting hood (100), the guide plate (200) is located between the two oil nets (300), and the two oil nets (300) and the guide plate (200) enclose a first smoke collecting groove (400) with a downward opening.

2. The range hood according to claim 1, wherein the bottom of the volute (700) of the range hood is detachably connected with the housing (600) of the range hood; the locating hole has been seted up on roof (610) of shell (600), the fixed ring (710) of flange of the top air outlet fixedly connected with of spiral case (700), the fixed ring (710) of flange can be blocked in the locating hole.

3. The range hood according to claim 2, wherein the volute (700) is removable from a fume inlet of the fume collecting hood (100).

4. The range hood according to claim 2, wherein a sealing ring (800) is fixedly connected to the flange fixing ring (710), and the sealing ring (800) is used for abutting and sealing against the positioning hole.

5. The range hood according to claim 2, wherein a first support frame (630) is fixedly connected to the housing (600), a second support frame (720) is fixedly connected to the bottom of the volute (700), and the first support frame (630) is in threaded connection with the second support frame (720) through a threaded connection.

6. The range hood according to claim 2, wherein a rotating shaft, a check valve plate (730) and a limiting member are installed inside the flange fixing ring (710), two ends of the rotating shaft are respectively and fixedly connected with the side wall of the flange fixing ring (710), the check valve plate (730) is in rotating fit with the rotating shaft, the limiting member is fixedly connected with the rotating shaft, and the limiting member is used for limiting the check valve plate (730) above the rotating shaft.

7. The range hood according to claims 1-3, wherein the height of the first smoke gathering groove (400) is greater than 10 mm.

8. The range hood according to claims 1-3, wherein the oil screen (300) has a first portion disposed opposite to the smoke inlet of the smoke collecting hood (100) and a second portion disposed opposite to the top surface of the smoke collecting chamber of the smoke collecting hood (100);

the first part of two oil net (300) with guide plate (200) enclose into first collection cigarette groove (400), two oil net (300) the second part all with the top surface of collection cigarette chamber encloses into the opening towards the second collection cigarette groove of the smoke inlet of collection petticoat pipe (100).

9. The range hood according to claim 1-3, wherein the oil cup (500) is installed at the bottom of the rear end of the fume collecting hood (100);

the oil screen (300) is arranged in an inclined manner from front to back to downward, and oil can flow into the oil cup (500) along the oil screen (300); and/or the guide plate (200) is arranged in a downward inclined mode from front to back, and oil can flow into the oil cup (500) along the guide plate (200).

10. The range hood according to any one of claims 1 to 6, wherein the oil screen (300) and the deflector (200) are both detachably connected to the fume collecting hood (100).

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