Machine head and integrated cooker

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a machine head and an integrated cooker. At least part of an air duct is formed in the machine head, the machine head further comprises a noise reduction assembly, the noise reduction assembly comprises at least one first flow guide piece and a sound absorption piece, the first flow guide piece is provided with a plurality of through holes, and at least two opposite sides in the inner side wall of the air duct are connected with the first flow guide piece. Sound absorption parts are arranged between the inner side walls of the air ducts connected with the first flow guide parts and the corresponding first flow guide parts, and at least part of sound cavities are formed between the sound absorption parts and the corresponding first flow guide parts. According to the machine head and the integrated cooker, the noise is lower, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a machine head and an integrated stove. Background Art

[0002] An integrated stove, also known as an environmentally friendly stove or integrated environmentally friendly stove, is a kitchen appliance that integrates multiple functions, including a range hood, gas stove, and disinfection cabinet. It offers advantages such as space saving, excellent fume extraction, and energy conservation and environmental protection. The structure of an integrated stove typically consists of a frame and a head. The frame is equipped with a gas stove, disinfection cabinet, bellows, and other structures. The top of the frame forms the stovetop, while the head also serves as a fume extraction module: an air inlet is provided on the head, and a fan acts as a fume extraction power module, drawing the fume through the air inlet into the bellows and exhausting it outdoors. The specific fume extraction and exhaust path is typically air inlet-head flow channel-bellows-fan-exhaust duct-public flue.

[0003] With the continuous development of the economy and the improvement of people's living standards, users are increasingly demanding low noise levels while ensuring that integrated stoves meet the requirements of effective range hood extraction. The development and application of low-noise technology has become a key focus for integrated stove manufacturers in recent years, with low noise levels becoming a key factor in reflecting product strength.

[0004] However, to achieve optimal fume extraction, integrated stoves are constantly increasing fan air volume and static pressure, further increasing the noise level of the integrated stove. When the fan is operating, the sound is transmitted irregularly within the stove head, resulting in a high noise level inside the stove head. Most integrated stoves today focus on reducing noise from the fan itself, while neglecting noise reduction within the stove head.

[0005] Therefore, it is urgent to design a head and an integrated stove to solve the above problems. Utility Model Content

[0006] One purpose of the present invention is to provide a handpiece, in which the noise inside the handpiece can be better absorbed.

[0007] Another object of the present invention is to provide an integrated stove with lower noise and better user experience.

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

[0009] The head has at least a partial air duct formed inside, and the head includes a noise reduction component, and the noise reduction component includes a first air guide and a sound absorbing component. The first air guide is provided with a plurality of through holes to form the inner side wall of the air duct, and at least two opposite sides are connected to the first air guide. The sound absorbing component is arranged between the inner side wall of the air duct connected to the first air guide and the corresponding first air guide, and at least a partial sound cavity is formed between the sound absorbing component and the corresponding first air guide.

[0010] As an optional solution, the cross-section of the first flow guide is wavy.

[0011] As an optional solution, in the two opposite first flow guide members, the wave crests of one are aligned with the wave crests of the other, and the wave troughs of one are aligned with the wave troughs of the other.

[0012] As an optional solution, the plurality of troughs of the first flow guide member and the sound absorbing member are arranged in abutment with each other to form a plurality of sub-acoustic cavities.

[0013] As an optional solution, the angle between adjacent oblique sides of the first flow guide member is in the range of 90° to 120°.

[0014] As an optional solution, an air inlet piece is provided at the top of the above-mentioned air duct, and a second air guide piece is provided beside the bottom of the above-mentioned air inlet piece. The above-mentioned nose also includes a front panel and a rear panel. The above-mentioned front panel and the rear panel are connected and enclose at least part of the above-mentioned air duct. The above-mentioned second air guide piece is located on the top of the above-mentioned noise reduction component installed on the above-mentioned rear panel and is configured to guide the airflow from the air inlet piece to the above-mentioned noise reduction component installed corresponding to the above-mentioned rear panel.

[0015] As an optional solution, the cross-section of the second flow guide member is arc-shaped.

[0016] As an optional solution, one end of the second air guide is connected to the air inlet member or the rear plate, and the other end of the second air guide is connected to the rear plate.

[0017] As an optional solution, the sound absorbing member is made of porous material or fiber material.

[0018] The integrated stove comprises the above-mentioned machine head.

[0019] The beneficial effects of the present invention are:

[0020] The utility model provides a head, by arranging a first flow guide on the inner wall of the air duct, when the airflow passes through the air duct, due to the multiple through holes on the first flow guide, the first flow guide has a certain perforation rate. 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 is: L: thickness of air layer (thickness of acoustic cavity); t: thickness of inner panel 221; d: hole diameter; c: speed of sound; P: perforation rate. Since an acoustic cavity is formed between the first air guide and the sound absorbing member, after calculation, f is made to fall within the frequency range generated by the head, and the noise reduction effect is the best. The combined use of the sound absorbing member and the acoustic cavity can superimpose the noise reduction effect. At least two of the inner walls of the air duct are provided with the first air guide and the sound absorbing member. The two groups of noise reduction components act at the same time, and the noise reduction effect is better. The noise caused by the airflow agitation in the head or the noise of the fan itself is more effectively reduced.

[0021] The utility model also provides an integrated stove, comprising the above-mentioned handpiece. By adopting the above-mentioned handpiece, the integrated stove has lower overall noise and better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded view of the handpiece provided by an embodiment of the present utility model;

[0023] Figure 2 This is a cross-sectional view of the side view of the nose provided by an embodiment of the utility model;

[0024] Figure 3 This is a schematic structural diagram of a noise reduction assembly provided by an embodiment of the present utility model;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a cross-sectional view of the nose of the machine provided by an embodiment of the present utility model from a top-down perspective;

[0027] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0028] In the picture:

[0029] 10. Front panel; 11. First side panel; 12. Second side panel;

[0030] 20. Rear panel; 30. Air duct; 31. Inner wall;

[0031] 40. Noise reduction component; 41. First flow guide; 411. Through hole; 412. Wave crest; 413. Wave trough; 414. Connecting portion; 42. Sound absorbing member; 43. Sound cavity; 431. Sub-sound cavity;

[0032] 50. Air inlet member; 60. Second air guide member; 70. Base. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0034] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0037] This embodiment provides a head, the noise inside the head can be better absorbed. Figure 1-Figure 4 As shown, at least a portion of the air duct 30 is formed inside the head, and the head includes a noise reduction component 40. The noise reduction component 40 includes at least one first air guide 41 and a sound absorbing component 42. The first air guide 41 has a plurality of through holes 411. In the inner side wall 31 of the air duct 30, at least two opposite sides are connected with the first air guide 41. A sound absorbing component 42 is provided between the inner side wall 31 of the air duct 30 connected with the first air guide 41 and the corresponding first air guide 41. At least a portion of the sound cavity 43 is formed between the sound absorbing component 42 and the corresponding first air guide 41.

[0038] The above-mentioned head is provided with a first air guide 41 on the inner wall 31 of the air duct 30. When the airflow passes through the air duct 30, the first air guide 41 has a certain perforation rate due to the multiple through holes 411 provided on the first air guide 41. 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 42 is: L: thickness of air layer (thickness of acoustic cavity); t: plate thickness; d: hole diameter; c: speed of sound; P: perforation rate. Since an acoustic cavity 43 is formed between the first air guide 41 and the sound absorbing member 42, after calculation, f is made to fall within the frequency range generated by the head, and the noise reduction effect is the best. The combined use of the sound absorbing member 42 and the acoustic cavity 43 can superimpose the noise reduction effect. At least two of the inner walls 31 of the air duct 30 are provided with the first air guide 41 and the sound absorbing member 42. The two groups of noise reduction components 40 act at the same time, and the noise reduction effect is better. The noise in the head due to the agitation of the air flow or the noise of the fan itself is more effectively reduced.

[0039] Optionally, the sound absorbing member 42 is made of porous material or fiber material. The internal space of such material is relatively loose, which is conducive to consuming or absorbing sound waves.

[0040] Alternatively, as Figure 3 and Figure 4 As shown, the cross-section of the first air guide 41 is wavy. With this arrangement, the first air guide 41 forms approximately triangular convex and concave surfaces, allowing airflow to flow along the extension direction of the wave crests 412 or troughs 413 of the waves, thereby regularizing the airflow within the air duct 30, thereby reducing the fluctuation amplitude of the airflow and reducing the noise caused by the gas flow.

[0041] Alternatively, as Figure 4 As shown, the plurality of troughs 413 of the first flow guide 41 and the sound absorbing member 42 are arranged in contact with each other to form a plurality of sub-cavities 431. Through the above arrangement, the thickness of each sub-cavity 431 is in a variable value, which can achieve a noise reduction effect with a wider frequency range.

[0042] Alternatively, as Figure 5 and Figure 6 As shown, between two opposing first flow guides 41, the crests 412 of one are aligned with the crests 412 of the other, and the troughs 413 of one are aligned with the troughs 413 of the other. It is understood that if the alignment is offset, the regular directions of the airflow on both sides will be offset, which may easily cause turbulence. This arrangement ensures that the regular airflow on both sides is consistent, thereby improving the stability of the gas flow.

[0043] Optionally, the angle between adjacent oblique sides of the first flow guide 41 is in the range of 90° to 120°, which can regulate the airflow well while preventing the angle from being too small to divide the airflow too much and affect the gas flow rate.

[0044] Alternatively, as Figure 1 and Figure 2 As shown, the front end also includes a front panel 10 and a rear panel 20, which are connected to each other and enclose at least a portion of the air duct 30. The front panel 10 is U-shaped, and the side of the front panel 10 opposite the rear panel 20 is a first side panel 11 (i.e., the inner side wall 31 indicated on the front panel 10). For example, the first side panel 11 and the rear panel 20 are respectively provided with a first air guide 41 and a sound absorbing member 42. The front panel 10 also includes two second side panels 12, which are respectively connected to the two opposite sides of the first side panel 11. The two second side panels 12 are connected to the rear panel 20 to enclose at least a portion of the air duct 30. In another embodiment, the first air guide 41 and the sound absorbing member 42 may be provided on each of the two side panels, or the first air guide 41 and the sound absorbing member 42 may be provided on all four sides of the air duct 30, without limitation.

[0045] Alternatively, as Figure 4 As shown, connecting portions 414 are formed at both ends of the first flow guide 41 . The connecting portions 414 are bent and used to connect to the rear panel 20 or the first side panel 11 . The setting of the connecting portions 414 ensures that the sound absorbing member 42 can be accommodated in the first flow guide 41 .

[0046] Alternatively, as Figure 1 and Figure 2 As shown, the machine head also includes a base 70, and the lower sides of the front panel 10 and the rear panel 20 are connected to the base 70, and the base 70 serves to support the entire machine head.

[0047] Alternatively, as Figure 1 and Figure 2 As shown, an air inlet 50 is provided at the top of the air duct 30, and a base 70 is mounted on a frame (not shown). Under the action of the fan, air flows in from the air inlet 50, flows out from the base 70, and enters the fan assembly mounted on the frame.

[0048] Alternatively, as Figure 1 and Figure 2 As shown, a second air guide 60 is provided beside the bottom of the air inlet member 50. The second air guide 60 is located on top of the noise reduction assembly 40 mounted on the rear panel 20 and is configured to guide airflow from the air inlet member 50 to the noise reduction assembly 40 mounted corresponding to the rear panel 20. It will be appreciated that without the second air guide 60, airflow entering the air duct 30 from the air inlet member 50 would generate vortices on the side of the rear panel 20 and above the corresponding noise reduction assembly 40. With the second air guide 60, the Coanda effect (wall adhesion) of the fluid ensures that the airflow adheres to the second air guide 60 and smoothly transitions to the noise reduction assembly 40 on the rear panel 20.

[0049] In this embodiment, Figure 2 As shown, the cross section of the second flow guide 60 is arc-shaped, achieving a relatively gentle flow guiding effect. In other embodiments, the second flow guide 60 can also be linear, which is not limited here.

[0050] One end of the second air guide 60 is connected to the air inlet 50 or the rear plate 20, and the other end of the second air guide 60 is connected to the rear plate 20. The specific connection method can be welding or connection by fasteners, etc., which is not limited here.

[0051] This embodiment also provides an integrated stove, which includes the above-mentioned head. By adopting the above-mentioned head, the integrated stove has lower overall noise and better user experience. According to test results, 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.

[0052] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A machine head, wherein at least a portion of an air duct (30) is formed inside the machine head, characterized in that: The head includes a noise reduction component (40), and the noise reduction component (40) includes a first air guide (41) and a sound absorbing component (42). The first air guide (41) is provided with a plurality of through holes (411), forming an inner side wall (31) of the air duct (30), at least two opposite sides of which are connected to the first air guide (41). The sound absorbing component (42) is provided between the inner side wall (31) of the air duct (30) connected to the first air guide (41) and the corresponding first air guide (41), and at least a portion of a sound cavity (43) is formed between the sound absorbing component (42) and the corresponding first air guide (41).

2. The handpiece according to claim 1, wherein: The cross section of the first flow guide (41) is wave-shaped.

3. The handpiece according to claim 2, characterized in that: In the two opposite first flow guide members (41), the wave crest (412) of one is aligned with the wave crest (412) of the other, and the wave trough (413) of one is aligned with the wave trough (413) of the other.

4. The handpiece according to claim 2, wherein: The plurality of troughs (413) of the first flow guide member (41) and the sound absorbing member (42) are arranged in abutment with each other to form a plurality of sub-acoustic cavities (431).

5. The handpiece according to claim 2, wherein: The included angle between adjacent oblique sides of the first flow guide (41) is in the range of 90° to 120°.

6. The handpiece according to any one of claims 1 to 5, characterized in that: An air inlet member (50) is provided at the top of the air duct (30), and a second air guide member (60) is provided beside the bottom of the air inlet member (50). The nose also includes a front panel (10) and a rear panel (20), and the front panel (10) and the rear panel (20) are connected and enclose at least part of the air duct (30). The second air guide member (60) is located on the top of the noise reduction component (40) installed on the rear panel (20) and is configured to guide the airflow from the air inlet member (50) to the noise reduction component (40) installed corresponding to the rear panel (20).

7. The handpiece according to claim 6, characterized in that The cross section of the second flow guide (60) is arc-shaped.

8. The handpiece according to claim 6, wherein: One end of the second air guide (60) is connected to the air inlet (50) or the rear plate (20), and the other end of the second air guide (60) is connected to the rear plate (20).

9. The handpiece according to any one of claims 1 to 5, characterized in that: The sound absorbing member (42) is made of porous material or fiber material.

10. Integrated stove, characterized in that: Comprising the nose as described in any one of claims 1-9.

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