Fan assembly and integrated cooker

Abstract

The invention belongs to the technical field of kitchen appliances, and discloses a fan assembly and an integrated cooker. The fan assembly comprises a fan, a volute and a first sound absorption part, the volute comprises a rear plate and a coaming assembly, the coaming assembly comprises an inner coaming, the fan is rotationally connected to the rear plate, the inner coaming is in an arc shape and is connected with the rear plate, the inner coaming is arranged on the peripheral side of the fan in a surrounding mode, and a plurality of first through holes are formed in the inner coaming; the first sound absorption piece is arranged on the side, away from the draught fan, of the inner surrounding plate and forms a first sound cavity with the inner surrounding plate. The draught fan assembly is adopted by the integrated cooker. According to the fan assembly and the integrated cooker, the noise of the fan can be reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a fan assembly and an integrated stove. Background Art

[0002] Integrated stove, also known as environmentally friendly stove or integrated environmentally friendly stove, is a kitchen appliance that integrates multiple functions such as range hood, gas stove, disinfection cabinet, etc. It has the advantages of saving space, good fume extraction effect, energy saving and environmental protection. The structure of an integrated stove usually includes a frame and a head. The frame is provided with a gas stove, a disinfection cabinet, a bellows and other structures. The top of the frame forms the table top of the stove, and the head also has the function of absorbing oil fume: the head is provided with an air inlet, and the fan serves as an oil fume suction power module to suck the oil fume into the bellows through the air inlet and discharge it to the outside. The specific oil fume suction and exhaust path is usually air inlet-head flow channel-bellows-fan-exhaust duct-public flue.

[0003] With the continuous development of economy, people's living standard is getting higher and higher. While users are satisfied with the smoke absorption effect of integrated stoves, they have a stronger demand for low noise. In addition, the development and application of low noise technology has become the focus of integrated stove manufacturers in recent years, and low noise level is also an important factor in reflecting product strength.

[0004] However, in order to achieve a better smoke absorption effect, the air volume and static pressure of the integrated stove fan are constantly increasing, which further increases the noise level of the integrated stove. However, due to the limited space of the integrated stove, the usual practice of increasing the size of the fan to reduce the fan speed is no longer effective.

[0005] Therefore, there is an urgent need to design a fan assembly and an integrated stove to solve the above problems. Summary of the invention

[0006] An object of the present invention is to provide a fan assembly that can reduce the noise of the fan and improve the user experience.

[0007] Another object of the present invention is to provide an integrated stove that produces little noise during use, thereby improving the user experience.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] Blower assembly, including:

[0010] Fan;

[0011] A volute, wherein the volute comprises a rear plate and a panel assembly, wherein the panel assembly comprises an inner panel, wherein the fan is rotatably connected to the rear plate, wherein the inner panel is arc-shaped and connected to the rear plate, wherein the inner panel is disposed around the fan, and wherein a plurality of first through holes are provided on the inner panel;

[0012] The first sound absorbing member is arranged on a side of the inner enclosure plate away from the fan and forms a first sound cavity with the inner enclosure plate.

[0013] As an optional scheme, the axial direction of the above-mentioned fan is defined as a first direction, the above-mentioned inner enclosure panel includes a main body and two flanges, the above-mentioned main body is arc-shaped and connected to the above-mentioned rear plate, the two opposite side edges of the above-mentioned main body in the first direction extend away from the center of the above-mentioned fan to form the two above-mentioned flanges, and the above-mentioned first sound absorbing member, the above-mentioned main body and the two above-mentioned flanges form at least a part of the above-mentioned first sound cavity.

[0014] As an optional scheme, the above-mentioned enclosure assembly also includes an outer plate, which is connected to the above-mentioned rear plate and is arranged on the side of the above-mentioned first sound absorbing member away from the above-mentioned inner enclosure plate. A plurality of second through holes are opened on the above-mentioned outer plate, and at least a portion of a second sound cavity is formed between the above-mentioned outer plate and the above-mentioned first sound absorbing member.

[0015] As an optional solution, with the fan as the center, the thickness of the second acoustic cavity at different positions in the circumferential direction of the fan is different.

[0016] As an optional solution, the outer plate is rectangular and is arranged tangent to at least a portion of the first sound absorbing member.

[0017] As an optional solution, a plurality of grooves are provided on the side of the rear plate away from the inner panel, a plurality of third through holes are provided at the bottom of each of the grooves, and the fan assembly further comprises a second sound absorbing member which is buckled in the plurality of grooves.

[0018] As an optional solution, with the fan as the center, the plurality of grooves are arranged in at least two circles, and at least two grooves are arranged in each circle.

[0019] The integrated stove adopts the above-mentioned fan assembly.

[0020] As an optional solution, the integrated stove further comprises a frame and a head, the fan is installed inside the frame, the head is installed on the top of the frame and is provided with an air inlet, and the fan is configured to draw air inward from the air inlet;

[0021] The fan assembly further comprises a guide plate, which is located between the enclosure assembly and the air inlet member, and is configured to guide the airflow to the front side of the fan.

[0022] As an optional solution, the guide plate is in an arc shape, with one end connected to the rear plate and the other end connected to the front side of the volute.

[0023] The beneficial effects of the present invention are:

[0024] The present invention provides a fan assembly, according to the noise reduction principle of the perforated plate lining sound absorbing material, a design method for the working frequency of the inner enclosure L: air layer thickness (sound cavity thickness); t: inner panel thickness; d: hole diameter; c: sound velocity; P: perforation rate. Since the first sound absorbing member and the inner panel form a first sound cavity, the first sound cavity has a certain sound cavity thickness. Secondly, the setting of the first through hole makes the inner panel have a certain perforation rate. After calculation, f falls within the maximum frequency band of the fan noise, and the sound absorption effect is the best. The combination of the first sound cavity and the first sound absorbing member can superimpose the sound absorption effect, which can more effectively reduce the noise inside the fan, thereby improving the customer's experience.

[0025] The present invention also provides an integrated stove, which can significantly reduce the overall noise of the integrated stove and improve the user experience of customers by adopting the above-mentioned fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a fan assembly provided by an embodiment of the present invention with the front plate hidden;

[0027] Figure 2 is a simplified schematic diagram of a fan and a second acoustic cavity provided by an embodiment of the present invention;

[0028] Figure 3 is an exploded view of a fan assembly provided by an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a frame, a head and a fan assembly provided by an embodiment of the present invention;

[0030] Figure 5 is a structural schematic diagram of a fan assembly provided by an embodiment of the present invention;

[0031] Figure 6 is a schematic structural diagram of a fan assembly and a head provided by an embodiment of the present invention at a first viewing angle;

[0032] Figure 7 is a schematic structural diagram of a fan assembly and a head provided by an embodiment of the present invention at a second viewing angle;

[0033] Figure 8 is a schematic structural diagram of an integrated stove provided by an embodiment of the present invention;

[0034] Fig. 9 is an exploded view of a machine head provided by an embodiment of the present invention;

[0035] Fig.10 is a cross-sectional view of the side view of the nose provided by an embodiment of the present invention;

[0036] Fig.11is a schematic structural diagram of a flow guide assembly provided in an embodiment of the present invention;

[0037] Fig.12 yes Fig.11 The enlarged view of point A in the middle;

[0038] Fig.13 is a cross-sectional view of the nose of the machine provided by an embodiment of the present invention from a top-down perspective;

[0039] Fig.14 yes Fig.13 Enlarged view of point B in the middle.

[0040] In the figure:

[0041] 100. Fan assembly;

[0042] 10. fan; 20. volute; 21. rear plate; 211. groove; 2111. third through hole;

[0043] 22. enclosure assembly; 221. inner enclosure; 2211. body; 22111. first through hole; 2212. flange;

[0044] 222, first sound absorbing member; 223, outer plate; 2231, second through hole; 224, second sound cavity; 23, air outlet; 24, front plate; 25, air inlet;

[0045] 30. A second sound absorbing member;

[0046] 40. guide plate; 41. guide portion; 42. mounting portion;

[0047] 300, frame; 320, bellows;

[0048] 400, nose; 410, front panel; 411, first side panel; 412, second side panel;

[0049] 420, rear panel of machine head; 430, air duct;

[0050] 440, flow guide assembly; 441, third flow guide; 4411, through hole; 4412, wave crest; 4413, wave trough; 4414, connecting portion; 442, sound absorbing member; 443, sound cavity; 4431, sub-sound cavity;

[0051] 450. Air inlet member; 460. Second air guide member; 470. Base. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0056] This embodiment provides a fan assembly 100, which can reduce the noise of the fan 10 and improve the user experience. Figure 1 As shown, the fan assembly 100 includes a fan 10, a volute 20 and a first sound absorbing member 222, the volute 20 includes a rear plate 21 and a panel assembly 22, the panel assembly 22 includes an inner panel 221, the fan 10 is rotatably connected to the rear plate 21, the inner panel 221 is arc-shaped and connected to the rear plate 21, the inner panel 221 is arranged around the fan 10, and a plurality of first through holes 22111 are provided on the inner panel 221; the first sound absorbing member 222 is arranged on the side of the inner panel 221 away from the fan 10 and forms at least a portion of the first sound cavity with the inner panel 221 (blocked by the first sound absorbing member 222, not marked).

[0057] In the above-mentioned fan assembly 100, according to the noise reduction principle of the perforated plate lining sound-absorbing material, the calculation method of the working frequency of the inner panel 221 is: L: air layer thickness (sound cavity thickness); t: inner panel 221 thickness; d: hole diameter; c: sound velocity; P: perforation rate. Since the first sound absorbing member 222 and the inner panel 221 form a first sound cavity, the first sound cavity has a certain sound cavity thickness. Secondly, the setting of the first through hole 22111 makes the inner panel 221 have a certain perforation rate. After calculation, f falls within the maximum frequency band of the noise of the fan 10, and the sound absorption effect is the best. The combination of the first sound cavity and the first sound absorbing member 222 can superimpose the sound absorption effect, more effectively reduce the noise inside the fan 10, thereby improving the customer's experience.

[0058] In order to ensure that the f value falls within the maximum frequency range of the noise of the fan 10, this can be achieved by changing the perforation ratio. The perforation ratio refers to the ratio of the area of ​​the openings on the part to the total area.

[0059] It should be noted that the fan assembly 100 generally includes a motor, an impeller and other structures. The motor drives the impeller to rotate to drive the airflow. This is the existing technology and the specific structure will not be described in detail here.

[0060] Optionally, the axial direction of the fan 10 is defined as the first direction, the inner enclosure 221 includes a body 2211 and two flanges 2212, the body 2211 is arc-shaped and connected to the rear plate 21, and the two opposite sides of the body 2211 in the first direction extend away from the center of the fan 10 to form two flanges 2212, and the first sound absorbing member 222, the body 2211 and the two flanges 2212 form at least part of the first sound cavity. Through the above arrangement, the arrangement of the first sound cavity is realized. Among them, the first sound absorbing member 222 can be made of porous fiber materials, such as sponge or felt, etc., which is not limited here.

[0061] Alternatively, if Figure 1As shown, the enclosure assembly 22 also includes an outer plate 223, which is connected to the rear plate 21 and is arranged around the side of the first sound absorbing member 222 away from the inner enclosure 221. A plurality of second through holes 2231 are provided on the outer plate 223, and at least a portion of the second sound cavity 224 is formed between the outer plate 223 and the first sound absorbing member 222. It can be understood that in the actual application of the fan 10, not only noise is generated inside, but also in the use scenario of the range hood stove (it can also be other closed installation environments), the sound will be transmitted from the inside through the external mounting parts, overflow to the outside, and propagate within the installation environment. Taking the integrated stove as an example, the fan assembly 100 is installed in the frame 300, and the noise is transmitted from the inside of the fan 10 to the inside of the frame 300. By setting the outer plate 223, the outer plate 223 and the first sound absorbing member 222 form a second sound cavity 224. The noise inside the frame 300 passes through the second through holes 2231 and forms a sound absorbing structure with the second sound cavity 224. According to the formula The f value is made to fall within the maximum frequency band of the noise of the fan 10, and the noise that overflows to the outside of the fan 10 and is located inside the frame 300 is reduced. At the same time, combined with the first sound absorbing member 222, the noise reduction effect is better.

[0062] Alternatively, if Figure 1 and Figure 2 As shown, with the fan 10 as the center, the thickness of the second acoustic cavity 224 at different positions around the fan 10 is different. Figure 2 The noise radiates outward in multiple directions with the fan 10 as the center (only three directions are indicated as examples in the figure, indicated by arrows). The thick line part where the arrow falls into the second acoustic cavity 224 is the thickness of the second acoustic cavity 224 in this direction. This arrangement makes the thickness of the second acoustic cavity 224 at a varying value, which can achieve a noise reduction effect with a wider frequency.

[0063] In this embodiment, the outer plate 223 is rectangular and is tangent to at least part of the first sound absorbing member 222. As a result, the second sound cavity 224 is generally triangular in shape, and five sound cavities are formed and arranged at intervals around the inner plate 221, so that the noise reduction effect is relatively balanced. In other embodiments, the shape of the outer plate 223 can also be set to other shapes, as long as the sound cavity thickness of the second sound cavity 224 is variable.

[0064] In addition, the outer plate 223 and the first sound absorbing member 222 are arranged tangent to each other, which can also play an auxiliary limiting role in fixing the first sound absorbing member 222 .

[0065] Optionally, the first sound absorbing member 222 and the two flanges 2212 may be connected by bonding or other means to ensure that the first sound absorbing member 222 seals the first sound cavity to prevent airflow from leaking from the first through hole 22111 when the fan 10 is working.

[0066] Optionally, an air outlet 23 is formed on one side of the outer panel 223 , and the air outlet 23 is connected to the inner side of the inner panel 221 , and the air drawn in by the fan 10 enters the common smoke exhaust channel from the air outlet 23 .

[0067] Therefore, the fan assembly 100 in this embodiment reduces the noise inside the fan 10 through the first sound cavity and the first sound absorbing member 222, and reduces the chaotic noise that the fan 10 spills into the interior of the frame 300 through the second sound cavity 224 and the first sound absorbing member 222, which can significantly reduce the noise of the overall integrated stove and improve the customer's user experience.

[0068] Alternatively, if Figure 3 As shown, the rear plate 21 has a plurality of grooves 211 on the side away from the inner panel 221, and a plurality of third through holes 2111 are formed at the bottom of each groove 211. The fan assembly 100 also includes a second sound absorbing member 30, which is buckled in the plurality of grooves 211. Through the above arrangement, according to the noise reduction principle of the perforated plate lining the sound absorbing material, the design method of the working frequency of the rear plate 21 The f value is made to fall within the maximum frequency range of the noise of the fan 10 . At the same time, combined with the arrangement of the second sound absorbing member 30 , the noise transmitted from the fan 10 to the rear plate 21 is further reduced.

[0069] Optionally, the plurality of grooves 211 are arranged in at least two circles, and each circle is provided with at least two grooves 211. With the above arrangement, after the grooves 211 are arranged on the back side of the rear plate 21, a large area is left for fitting with the second sound absorbing member 30, thereby ensuring that the second sound absorbing member 30 fits with a larger area of ​​the rear plate 21, thereby ensuring the sealing of the third through hole 2111.

[0070] The present embodiment also provides an integrated stove, which uses the above-mentioned fan assembly 100. By adopting the above-mentioned fan assembly 100, the integrated stove can significantly reduce the overall noise of the integrated stove and improve the customer's usage experience.

[0071] Alternatively, if Figure 4 and Figure 5As shown, the integrated stove also includes a frame 300 and a head 400, the fan 10 is installed inside the frame 300, the head 400 is installed on the top of the frame 300 and an air inlet member 450 is provided, and the fan 10 is configured to draw air inward from the air inlet member 450; the fan assembly 100 also includes a guide plate 40, which is located between the enclosure assembly 22 and the air inlet member 450 and is configured to guide the airflow to the front side of the fan 10. It is understandable that in the prior art, the guide plate 40 is not provided on the outside of the volute 20, and the top of the volute 20 is flat. Due to the suction effect of the fan 10, more eddies will be generated, forming a dead pressure area, which will further generate eddy noise and flow loss of wind speed. After the guide plate 40 is added, according to the Coanda effect of the fluid (wall attachment effect), the guide plate 40 guides the air to the air inlet of the fan 10, and the airflow passes through the guide plate 40 and the front plate 24 into the fan 10, eliminating the eddy above the fan 10 and avoiding the dead pressure area, thereby eliminating the eddy noise and flow loss. According to experimental measurements, the noise of the integrated stove is reduced by about 3.1dB (A), and the air volume is increased by about 0.5m 3 / min.

[0072] Optionally, the guide plate 40 is in an arc shape, and one end is connected to the rear plate 21, and the other end is connected to the front side of the volute 20. The arc-shaped guide plate 40 has a better flow guiding effect.

[0073] Alternatively, if Figure 3 As shown, the guide plate 40 includes a guide portion 41 and a mounting portion 42 connected to each other, the guide portion 41 is arc-shaped, the mounting portion 42 extends to the back side of the rear plate 21 and is connected to the rear plate 21, and the second sound absorbing member 30 is sandwiched between the mounting portion 42 and the rear plate 21. Through the above arrangement, the mounting portion 42 also plays a role in assisting the clamping of the second sound absorbing member 30. Optionally, the second sound absorbing member 30 can be made of porous fiber materials, such as sponge or felt, etc., which is not limited here.

[0074] Alternatively, if Figure 6 and Figure 7 As shown, an air duct 430 is formed inside the head 400 ( Figure 6 The front side of the middle head 400 is not shown, and the air inlet direction is from top to bottom), the air inlet end of the air duct 430 is the air inlet member 450, and a second flow guide member 460 is arranged beside the bottom of the air inlet member 450, and the second flow guide member 460 is configured to guide the airflow downward; the fan assembly 100 is located on the lower side of the air duct 430, the fan assembly 100 includes a volute 20, a fan 10 and a guide plate 40, an air inlet 25 is formed on the front side of the volute 20, the fan 10 is rotatably connected to the volute 20 and is arranged toward the air inlet 25, and the guide plate 40 is arranged at the top of the volute 20 and is configured to guide the airflow to the air inlet 25.

[0075] With the above arrangement, after the fan 10 is started, the airflow enters from the air inlet 450 due to the suction force. After the second guide member 460 is added, according to the Coanda effect (wall attachment effect) of the fluid, the second guide member 460 covers the area behind the air inlet 25 where vortices are prone to occur, and continues to guide the airflow downward to the top of the volute 20. After the guide plate 40 is added, the guide plate 40 covers the right-angled area above the volute 20 where vortices are prone to form, and the airflow continues to reach the front side of the volute 20 along the guide plate 40, and then enters the air inlet 25. In the process of the air flow in the air duct 430 and entering the air inlet 25, the two vortex areas are avoided, the gas flow is smoother, and the gas fluctuation is smaller. On the one hand, the noise caused by gas fluctuations is reduced, and on the other hand, the obstruction of the vortex to the airflow is reduced, so that the gas flows faster, the efficiency of the fan 10 is improved, and the wind speed is increased.

[0076] Alternatively, if Figure 6 As shown, the cross-sections of the second flow guide 460 and the flow guide plate 40 are arc-shaped, achieving a relatively gentle flow guide effect. In other embodiments, the cross-sections of the second flow guide 460 and the flow guide plate 40 can also be linear, which is not limited here.

[0077] Alternatively, if Figure 6 As shown, the projection of the second air guide 460 in the vertical direction is located outside the projection of the opening of the air inlet 450 in the vertical direction, so that the setting of the second air guide 460 does not affect the airflow entering from the air inlet 450 .

[0078] Alternatively, if Figure 6 As shown, the projection of the opening of the air inlet member 450 in the vertical direction falls within the projection of the guide plate 40 in the vertical direction. Fig.10 The airflow in the air duct 430 acts on the guide plate 40 and is guided to the air inlet 25 .

[0079] Alternatively, if Figure 6 , Figure 7 and Fig. 9 As shown, the head 400 further includes a guide assembly 440, the guide assembly 440 includes a third guide member 441, the third guide member 441 is connected to the side wall of the air duct 430, and the cross section of the third guide member 441 is wavy. Fig.12 The third guide member 441 forms a convex surface and a concave surface that are approximately triangular, so that the airflow can flow along the extension direction of the wave crest 4412 or the wave trough 4413 of the wave, which has a regularizing effect on the airflow in the air duct 430, thereby reducing the fluctuation amplitude of the airflow and reducing the noise caused by the gas flow.

[0080] Alternatively, if Figure 8-Figure 10As shown, the head 400 includes a front panel 410 and a head rear panel 420, which are connected and enclosed to form an air duct 430, a first side panel 411 of the front panel 410 is opposite to and spaced from the head rear panel 420, and a third air guide 441 is provided on the first side panel 411 and the head rear panel 420 on the side facing the air duct 430. Through the above arrangement, that is, the third air guide 441 is provided on two opposite side walls of the air duct 430, the regularization effect of the airflow is better.

[0081] Among them, one end of the second guide member 460 is connected to the air inlet member 450 or the nose rear plate 420, and the other end of the second guide member 460 is connected to the nose rear plate 420. The specific connection method can be welding or connection through fasteners, etc., which is not limited here. As shown in the figure, the two ends of the guide plate 40 are respectively connected to the front side and the rear side of the volute 20. The specific connection method can be welding or connection through fasteners, etc., which is not limited here.

[0082] Alternatively, if Fig.13 and Fig.14 As shown, in the two opposite third flow guides 441, the crest 4412 of one is aligned with the crest 4412 of the other, and the trough 4413 of one is aligned with the trough 4413 of the other. It can be understood that, if the alignment is offset, the two sides of the airflow are staggered in the regular direction, which easily causes turbulence. Such an arrangement ensures that the regular airflow on both sides of the airflow is consistent, thereby improving the stability of the gas flow.

[0083] Optionally, the angle between two adjacent inclined surfaces forming waves on the third flow guide 441 is in the range of 90° to 120°. This setting can not only play a good role in regulating the airflow, but also prevent the angle from being too small to separate the airflow too much and affect the gas flow rate. It can be understood that the two adjacent inclined surfaces refer to the two inclined surfaces that form a wave crest 4412 or a wave trough 4413.

[0084] Alternatively, see Fig. 9 , Fig.11 and Fig.12 , the guide assembly 440 further includes a sound absorbing member 442, which is sandwiched between the third guide member 441 and the side wall of the air duct 430. The third guide member 441 has a plurality of through holes 4411, and a sound cavity 443 is formed between the third guide member 441 and the sound absorbing member 442. When the airflow passes through the air duct 430, the third guide member 441 has a certain perforation rate due to the plurality of through holes 4411. According to the noise reduction principle of the perforated plate lined with sound absorbing material, the calculation method of the working frequency of the sound absorbing member 442 is: L: thickness of air layer (thickness of acoustic cavity 443); t: thickness of inner panel 221; d: hole diameter; c: speed of sound; P: perforation rate. Since acoustic cavity 443 is formed between third air guide 441 and sound absorbing member 442, after calculation, f is made to fall within the frequency range generated by head 400, and the noise reduction effect is the best. The combined use of sound absorbing member 442 and acoustic cavity 443 can superimpose the noise reduction effect. The first side panel 411 and the head rear panel 420 are both provided with air guide assembly 440, and the noise reduction effect is better. The uniformity of noise reduction is improved, and the noise in head 400 transmitted to the position of head 400 due to airflow agitation or the noise of fan 10 itself is more effectively reduced.

[0085] Optionally, the sound absorbing member 442 is made of porous material or fiber material, and the internal space of such material is relatively loose, which is conducive to consuming or absorbing sound waves.

[0086] Alternatively, if Fig. 9 As shown, the front panel 410 also includes two second side panels 412 , which are respectively connected to two opposite sides of the first side panel 411 , and the two second side panels 412 are connected to the nose rear panel 420 to enclose and form an air duct 430 .

[0087] Alternatively, if Fig. 9 and Fig.10 As shown, the head 400 also includes a base 470, and the lower sides of the front panel 410 and the head rear panel 420 are connected to the base 470. The base 470 serves to support the entire head 400. The airflow enters the air duct 430 from the air inlet piece 450, and flows out from the base 470 to enter the top of the volute 20.

[0088] Alternatively, if Figure 8-Figure 10 As shown, the base 470 is installed on the frame 300 (not shown). Under the action of the fan 10, airflow enters from the air inlet member 450, flows out from the base 470, and enters the fan assembly 100 installed on the frame 300.

[0089] Specifically, if Figure 8 As shown, a wind box 320 is formed inside the frame 300 , and the fan assembly 100 is mounted on the wind box 320 .

[0090] Alternatively, if Fig.12 As shown, the plurality of troughs 4413 of the guide plate 40 and the sound absorbing member 442 are arranged in abutment with each other to form a plurality of sub-cavities 4431. Through the above arrangement, the cavity thickness of each sub-cavity 4431 is in a variable value, and a noise reduction effect with a wider frequency can be achieved.

[0091] Alternatively, if Fig.12As shown, connecting parts 4414 are formed at both ends of the guide plate 40. The connecting parts 4414 are bent and used to connect to the rear plate 420 of the machine head or the first side plate 411. The setting of the connecting parts 4414 ensures that the sound absorbing member 442 can be accommodated in the guide plate 40.

[0092] In summary, the integrated stove significantly reduces the overall noise of the integrated stove from three aspects: the fan assembly 100 itself, the reflection noise of the fan 10 in the frame 300, and the noise caused by the fluctuation in the air duct 430.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fan assembly, characterized in that: include: Fan (10); A volute (20), the volute (20) comprising a rear plate (21) and a surrounding plate assembly (22), the surrounding plate assembly (22) comprising an inner surrounding plate (221), the fan (10) being rotatably connected to the rear plate (21), the inner surrounding plate (221) being arc-shaped and connected to the rear plate (21), the inner surrounding plate (221) being arranged around the circumference of the fan (10), and a plurality of first through holes (22111) being provided on the inner surrounding plate (221); A first sound absorbing member (222) is arranged on a side of the inner enclosure plate (221) facing away from the fan (10) and forms a first sound cavity with the inner enclosure plate (221).

2. The fan assembly according to claim 1, characterized in that: The axial direction of the fan (10) is defined as a first direction, the inner enclosure (221) includes a main body (2211) and two flanges (2212), the main body (2211) is arc-shaped and connected to the rear plate (21), and the two opposite side edges of the main body (2211) in the first direction extend in a direction away from the center of the fan (10) to form the two flanges (2212), and the first sound absorbing member (222), the main body (2211) and the two flanges (2212) form at least a portion of the first sound cavity.

3. The fan assembly according to claim 1, characterized in that: The enclosure assembly (22) further comprises an outer plate (223), wherein the outer plate (223) is connected to the rear plate (21) and is disposed around a side of the first sound absorbing member (222) facing away from the inner enclosure plate (221), wherein a plurality of second through holes (2231) are provided on the outer plate (223), and at least a portion of a second sound cavity (224) is formed between the outer plate (223) and the first sound absorbing member (222).

4. The fan assembly according to claim 3, characterized in that: With the fan (10) as the center, the thickness of the second acoustic cavity (224) is different at different positions in the circumference of the fan (10).

5. The fan assembly according to claim 4, characterized in that: The peripheral plate (223) is rectangular and is arranged tangentially to at least a portion of the first sound absorbing member (222).

6. The fan assembly according to any one of claims 1 to 5, characterized in that: A plurality of grooves (211) are provided on a side of the rear plate (21) facing away from the inner enclosure plate (221), and a plurality of third through holes (2111) are provided at the bottom of each of the grooves (211). The fan assembly further comprises a second sound absorbing member (30), and the second sound absorbing member (30) is buckled into the plurality of grooves (211).

7. The fan assembly according to claim 6, characterized in that: With the fan (10) as the center, the plurality of grooves (211) are arranged in at least two circles, and at least two grooves (211) are arranged in each circle.

8. Integrated stove, characterized in that: A fan assembly as described in any one of claims 1 to 7 is used.

9. The integrated stove according to claim 8, characterized in that: The integrated stove further comprises a frame (300) and a head (400), the fan (10) being installed inside the frame (300), the head (400) being installed on the top of the frame (300) and provided with an air inlet member (450), and the fan (10) being configured to draw air inward from the air inlet member (450); The fan assembly further comprises a guide plate (40), wherein the guide plate (40) is located between the enclosure assembly (22) and the air inlet member (450), and the guide plate (40) is configured to guide the airflow to the front side of the fan (10).

10. The integrated stove according to claim 9, characterized in that: The guide plate (40) is in an arc shape, with one end connected to the rear plate (21) and the other end connected to the front side of the volute (20).

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