CN215521378U - Volute component, fan system applying volute component and range hood - Google Patents

Abstract

The utility model discloses a volute component, which comprises a volute and a sound absorption component, wherein the volute comprises a ring wall, a through hole for reducing noise is formed in the ring wall, the sound absorption component comprises a sound absorption material layer which is coated on the periphery of the ring wall along the circumferential direction of the ring wall, the ring wall comprises a first wall positioned at the bottom and second walls positioned at two sides of the first wall in the circumferential direction, and a first oil leakage hole is formed in the first wall, and the volute component is characterized in that: the sound-absorbing material layer at least covers the second wall, and the thickness of the sound-absorbing material layer is 15-30 mm. Also discloses a fan system applying the volute component and a range hood applying the fan system. Compared with the prior art, the utility model has the advantages that: the noise reduction effect of the sound absorption material layer can be in the best state, and meanwhile, the noise reduction device is suitable for the installation environment with smaller air channels, and the adaptability of the air channels is improved.

Description

Volute component, fan system applying volute component and range hood

Technical Field

The utility model relates to a power device, in particular to a volute component, a fan system applying the volute component and a range hood applying the fan system.

Background

The centrifugal fan is a power device which rotates through an impeller in the fan, enables air near the impeller to rotate along with the impeller when in work, generates centrifugal motion, and can convert the centrifugal motion into fan pressure under the blocking effect of a fan volute, and therefore, a certain air flow is generated. The centrifugal fan has the advantages of simple structure installation, large ventilation volume, high wind pressure and the like, thereby being widely applied to oil fume purification equipment and air purification equipment.

However, centrifugal fans have a significant disadvantage in that they are noisy to operate. This noise has a significant influence on the life, work, etc. of people. The main noise sources of centrifugal fans include: aerodynamic noise, electromagnetic noise, and mechanical noise.

The prior art is to the solution of fan noise, and it is common to use to set up sound absorbing material at spiral case inner wall or outer wall, and sound absorbing material fixes with the mode of viscose commonly used, and not only fixed inconvenient, also can influence the absorption of noise. In addition, the sound-absorbing material is used more, the cost is higher, and the adaptability to the air duct is insufficient.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a volute assembly to improve the adaptability of the air duct and the noise reduction effect, aiming at the defects existing in the prior art.

The second technical problem to be solved by the present invention is to provide a fan system using the above volute assembly.

The third technical problem to be solved by the utility model is to provide a range hood with the fan system.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a spiral case subassembly, includes the spiral case and inhales the sound subassembly, the spiral case includes the rampart, offer the perforation that is used for making an uproar to fall on the rampart, it includes the sound absorbing material layer of cladding in the rampart periphery along rampart circumference to inhale the sound subassembly, the rampart is including the first wall that is located the bottom and the second wall that is located first wall both sides in circumference, first oil leak hole, its characterized in that have been seted up on the first wall: the sound-absorbing material layer at least covers the second wall, and the thickness of the sound-absorbing material layer is 15-30 mm.

According to one aspect of the utility model, the layer of sound-absorbing material is in one piece and covers the first wall and the second wall.

In order to facilitate the oil in the volute to flow downwards, a second oil leakage hole is formed in the position, corresponding to the first oil leakage hole, of the sound absorption material layer.

According to another aspect of the utility model, the sound-absorbing material layer comprises a first sound-absorbing material and a second sound-absorbing material, the perforations being made in the second walls, the first sound-absorbing material being provided on one of the second walls and the second sound-absorbing material being provided on the other of the second walls.

Preferably, the expanded length L1 of the first sound absorbing material is (0.35 to 0.48) × L, and the expanded length L2 of the second sound absorbing material is (0.35 to 0.48) × L, where L is the expanded length of the surround.

Preferably, in order to achieve a good perforation noise reduction effect, the perforations are circular holes, the diameter Φ d of each perforation is 1.5-2.5 mm, the distance between the first holes of two adjacent perforations is 10-15 mm, the distance between the second holes of two adjacent perforations is 10-15 mm, the distance between the first holes refers to the distance between the adjacent perforations along the axial direction of the volute, the distance between the second holes refers to the distance between the adjacent perforations along the circumferential direction of the volute, and the perforation rate is 11-13%.

In order to facilitate the installation of the sound absorption assembly and the volute, the sound absorption assembly further comprises a fixing piece for pressing the sound absorption material layer and the annular wall.

According to one aspect of the utility model, the fixing part comprises a first inserting sheet body, a second inserting sheet body and inserting sheets, wherein the first inserting sheet body is in a long strip shape, the second inserting sheet body is provided with two inserting sheets which are respectively bent from two ends of the first inserting sheet body and extend oppositely, the inserting sheets are also provided with two inserting sheets which are formed by bending one ends of the second inserting sheet bodies close to each other, the inserting sheets extend in a direction far away from the first inserting sheet body, inserting holes are formed in positions, corresponding to the inserting sheets, on the annular wall, the sound absorption material layer is inserted between the first inserting sheet body and the second inserting sheet body, and the inserting sheets extend into the volute through the inserting holes.

According to another aspect of the utility model, the fixing piece comprises a pressing plate body and mounting parts arranged at two opposite ends of the pressing plate body, the pressing plate body is pressed on one side of the sound-absorbing material layer, which is far away from the annular wall of the volute, and the mounting parts and the annular wall are riveted and fixed.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: a fan system, its characterized in that: a volute assembly as described above is applied.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: the utility model provides a range hood, includes the box, its characterized in that: the fan system is arranged in the box body.

Preferably, the box body is a hollow cuboid, the front side of the box body is provided with an air inlet, and the space of an air channel in the box body is smaller.

Compared with the prior art, the utility model has the advantages that: the thickness of the sound-absorbing material layer is set to be 15-30 mm, so that the noise reduction effect of the sound-absorbing material layer is in the best state, and meanwhile, the sound-absorbing material layer is suitable for a mounting environment with a small air duct, and the adaptability of the air duct is improved; the fixing piece for fixing the sound absorption material layer in a splicing or riveting mode is convenient to install.

Drawings

Fig. 1 is a schematic view of a range hood in a closed state according to a first embodiment of the present invention;

fig. 2 is a sectional view of the open state of the extractor hood according to the first embodiment of the present invention;

FIG. 3 is a schematic view of a fan system according to a first embodiment of the present disclosure;

FIG. 4 is a schematic view of the surround and sound absorbing assembly of the fan system of the first embodiment of the present invention;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a schematic view of the deployment of the annular wall of the fan system of the first embodiment of the present invention;

fig. 7 is an expanded view of a sound-absorbing material layer of the fan system according to the first embodiment of the present invention;

FIG. 8 is an enlarged view of a portion I of FIG. 6;

FIG. 9 is a schematic view of a fixture of a fan system according to a first embodiment of the present invention;

FIG. 10 is a schematic view of a surround and sound absorbing assembly of a fan system according to a second embodiment of the present invention;

FIG. 11 is a schematic view of a mounting member of a fan system according to a second embodiment of the present invention;

FIG. 12 is a schematic view of a fan system according to a third embodiment of the present invention;

fig. 13 is a schematic view showing the spread of sound absorbing material layers of a fan system according to a third embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 to 5, a range hood includes a box 100 and a fan system 200 disposed in the box 100, wherein the box 100 is in a substantially hollow rectangular parallelepiped shape (a certain inclination is allowed at the bottom), and the range hood integrally forms a thin range hood. The fan system 200 includes a volute assembly and an impeller 2 disposed within the volute assembly. An air inlet 101 is opened at the front side of the box 100, and a smoke barrier 300 capable of opening or closing the air inlet 101 is further disposed at the front side of the box 100.

The volute assembly comprises a volute 1, the volute 1 comprising a front cover plate 11, a rear cover plate 12 and an annular wall 13 connected between the front cover plate 11 and the rear cover plate 12. The annular wall 13 includes a first wall 131 at the bottom and second walls 132 at both sides of the first wall 131 in the circumferential direction, and a first oil leakage hole 135 is opened at the lowest point of the first wall 131, so that the oil in the scroll case 1 can flow down from the first oil leakage hole 135 to collect the oil.

The second wall 132 is provided with through holes 133, and preferably, the through holes 133 are distributed in an array, that is, at least two rows and two columns are formed, wherein a row is along the axial direction of the scroll casing 1, and a column is arranged along the circumferential direction of the scroll casing 1. Referring to fig. 6 and 8, the through holes 133 are circular holes, and have a diameter Φ d of 1.5 to 2.5mm, a first hole interval a of two adjacent through holes 133 of 10 to 15mm, and a second hole interval b of two adjacent through holes 133 of 10 to 15mm, where the first hole interval a is an interval between adjacent through holes 133 along the axial direction of the scroll casing 1, and the second hole interval b is an interval between adjacent through holes 133 along the circumferential direction of the scroll casing 1. The perforation rate is preferably 11 to 13%.

The volute assembly further comprises a sound absorption assembly, the sound absorption assembly comprises a sound absorption material layer 31 and a fixing piece 32 for connecting and fixing the sound absorption material layer 31 and the annular wall 13, and the sound absorption material layer 31 at least covers the second wall 132. Referring to fig. 5 to 9, in the present embodiment, the sound absorbing material layer 31 has a length L corresponding to the expanded surface of the annular wall 13. The thickness of the sound absorbing material layer 31 ranges from 15mm to 30mm, and the thickness refers to the dimension along the radial direction of the volute 1 in the installation state. Within this thickness range, the sound-absorbing material layer 31 may have an optimal noise reduction effect. When the fan system 200 of the present invention is installed in the box 100, since the range hood is thin and the space in the box 100 is small, the sound-absorbing material layer 31 with the above thickness can avoid interference with other components in the box 100 while having a good noise reduction effect, and is better adapted to the air duct in the box 100. The sound absorbing material layer 31 is preferably made of sound absorbing material having flame retardant property and good compressibility, such as PP/PET two-component sound absorbing cotton and polyurethane. The sound absorbing material layer 31 is opened with second oil leakage holes 313 at positions corresponding to the first oil leakage holes 135 so that the oil flows down.

The fixing member 32 is in the form of an insert in this embodiment, and includes a first insert body 321, a second insert body 322, and an insert 323, and the annular wall 13 of the volute 1 is provided with an insertion hole 134. The first inserting piece body 321 is strip-shaped, the second inserting piece body 322 has two, the two are respectively bent from two ends of the first inserting piece body 321 and extend oppositely, and the first inserting piece body 321 and the second inserting piece body 322 are preferably parallel or approximately parallel. The two insertion pieces 323 are formed by bending one end of the second insertion piece body 322 close to each other, and the insertion pieces 323 extend in a direction away from the first insertion piece body 321. The number and positions of the insertion holes 134 correspond to the insertion pieces 323, respectively. In this embodiment, the fixing members 32 have at least two, and are arranged at intervals along the circumferential direction of the annular wall 13.

When installed, the sound absorbing material layer 31 is inserted between the first tab body 321 and the second tab body 322, and then the first tab body 321 is arranged to extend in the axial direction of the scroll casing 1 and to abut against the annular wall 13 of the scroll casing 1, whereby the tabs 323 extend from the corresponding insertion holes 134 on the annular wall 13 into the inside of the annular wall 13. Thereby, the sound-absorbing material layer 31 is pressed against the annular wall 13, and the sound-absorbing material layer 31 is mounted.

Example two

Referring to fig. 10 and 11, the present embodiment is different from the first embodiment in that the fixing member 32 is in the form of a pressing plate, and the fixing member 32 includes a pressing plate body 324 and mounting portions 325 bent at opposite ends of the pressing plate body 324.

When the installation is carried out, the sound-absorbing material layer 31 is tightly attached to the annular wall 13, then the pressing plate body 324 is pressed on the side of the sound-absorbing material layer 31 far away from the annular wall 13 of the volute 1, and the installation part 325 and the annular wall 13 are riveted and fixed, thereby completing the installation of the sound-absorbing material layer 31.

EXAMPLE III

Referring to fig. 12 and 13, the present embodiment is different from the first embodiment in that the sound-absorbing material layer 31 is a split structure including a first sound-absorbing material 311 and a second sound-absorbing material 312, wherein the first sound-absorbing material 311 is disposed on one of the second walls 132, and the second sound-absorbing material 312 is disposed on the other second wall 132, wherein the first sound-absorbing material 311 is adjacent to the volute tongue 14 of the volute 1. In this case, the sound absorbing material layer 31 may be made of any sound absorbing material.

The first sound absorbing material 311 and the second sound absorbing material 312 are both rectangular after being developed, the length L1 of the first sound absorbing material 311 is (0.35 to 0.48) × L, and the length L2 of the second sound absorbing material 312 is (0.35 to 0.48) × L, that is, the sound absorbing material layer 31 covers at least 70% of the entire length of the annular wall 13.

Claims (12)

1. The utility model provides a spiral case subassembly, includes spiral case (1) and inhales the sound subassembly, spiral case (1) includes rampart (13), offer on rampart (13) and be used for falling the perforation (133) that makes an uproar, it includes along rampart (13) circumference cladding sound absorbing material layer (31) in rampart (13) periphery to inhale the sound subassembly, rampart (13) is including first wall (131) that are located the bottom and second wall (132) that are located first wall (131) both sides in circumference, first oil leak hole (135) have been seted up on first wall (131), its characterized in that: the sound-absorbing material layer (31) at least covers the second wall (132), and the thickness of the sound-absorbing material layer (31) is 15-30 mm.

2. The volute assembly of claim 1, wherein: the sound-absorbing material layer (31) is in one piece and covers the first wall (131) and the second wall (132).

3. The volute assembly of claim 2, wherein: and a second oil leakage hole (313) is formed in the position, corresponding to the first oil leakage hole (135), on the sound absorption material layer (31).

4. The volute assembly of claim 1, wherein: the sound-absorbing material layer (31) includes a first sound-absorbing material (311) and a second sound-absorbing material (312), the perforations (133) are opened on the second walls (132), the first sound-absorbing material (311) is provided on one of the second walls (132), and the second sound-absorbing material (312) is provided on the other second wall (132).

5. The volute assembly of claim 4, wherein: the expanded length L1 of the first sound absorbing material (311) is (0.35-0.48) L, and the expanded length L2 of the second sound absorbing material (312) is (0.35-0.48) L, wherein L is the expanded length of the annular wall (13).

6. The volute assembly of any of claims 1 to 5, wherein: the spiral case is characterized in that the through holes (133) are circular holes, the diameter phi d of each through hole (133) is 1.5-2.5 mm, the first hole interval (a) between every two adjacent through holes (133) is 10-15 mm, the second hole interval (b) between every two adjacent through holes (133) is 10-15 mm, the first hole interval (a) refers to the interval between every two adjacent through holes (133) along the axial direction of the spiral case (1), the second hole interval (b) refers to the interval between every two adjacent through holes (133) along the circumferential direction of the spiral case (1), and the punching rate is 11-13%.

7. The volute assembly of any of claims 1 to 5, wherein: the sound-absorbing assembly further comprises a fixing piece (32) for pressing the sound-absorbing material layer (31) and the annular wall (13).

8. The volute assembly of claim 7, wherein: fixing part (32) include first inserted sheet body (321), second inserted sheet body (322) and inserted sheet (323), first inserted sheet body (321) is rectangular shape, second inserted sheet body (322) have two and buckle and extend in opposite directions from the both ends of first inserted sheet body (321) respectively, inserted sheet (323) also have two and buckle and form by the one end that second inserted sheet body (322) are close to each other, inserted sheet (323) extend to the direction of keeping away from first inserted sheet body (321), jack (134) have been seted up with the position that inserted sheet (323) correspond on rampart (13), sound absorbing material layer (31) insert between first inserted sheet body (321) and second inserted sheet body (322), inserted sheet (323) pass jack (134) and extend to inside spiral case (1).

9. The volute assembly of claim 7, wherein: the fixing piece (32) comprises a pressing plate body (324) and installation parts (325) arranged at two opposite ends of the pressing plate body (324), the pressing plate body (324) is pressed on one side, away from the annular wall (13) of the volute (1), of the sound absorption material layer (31), and the installation parts (325) and the annular wall (13) are riveted and fixed.

10. A fan system, its characterized in that: use of a volute assembly according to any of claims 1 to 9.

11. The utility model provides a range hood, includes box (100), its characterized in that: a fan system according to claim 10 is provided in the box (100).

12. The range hood of claim 11, wherein: the box (100) is a hollow cuboid, and an air inlet (101) is formed in the front side of the box (100).

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