Flow guide structure and integrated cooker

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a flow guide structure and an integrated cooker. The flow guide structure comprises a machine head and a fan assembly, at least part of an air channel is formed in the machine head, an air inlet part is arranged at the air inlet end of the air channel, and a second flow guide part is arranged beside the bottom of the air inlet part and configured to guide airflow downwards. The fan assembly is located on the lower side of the air duct and comprises a volute, a fan and a first flow guide part, an air inlet is formed in the front side of the volute, the fan is rotationally connected to the volute and faces the air inlet, and the first flow guide part is arranged at the top of the volute and is configured to guide airflow to the air inlet. According to the flow guide structure and the integrated cooker, on one hand, noise caused by gas fluctuation is reduced, and on the other hand, the blocking effect of vortex on airflow is reduced, so that gas flows faster, the fan efficiency is improved, and the wind speed is increased.

Description

Technical Field

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

[0002] An integrated stove, also known as an environmentally friendly stove or integrated eco-friendly stove, is a kitchen appliance that combines multiple functions, including a range hood, gas stove, and disinfection cabinet. It offers advantages such as space saving, effective fume extraction, and energy conservation and environmental protection. An integrated stove typically consists of a frame and a head. The frame houses the gas stove, disinfection cabinet, and bellows. The top of the frame forms the cooktop, while the head also serves as a fume extractor: an air inlet is located on the head, and a fan acts as the extraction power module, drawing fumes through the inlet into the bellows and exhausting them outdoors.

[0003] An air duct is formed inside the handpiece. When the fan is working, gas enters the air duct. Due to the structural limitations of the handpiece, the air duct is narrow, and vortexes tend to form on the rear side of the air duct inlet, affecting the gas flow rate. At the same time, the fan is installed on the volute and is located on the lower side of the air duct. The top of the volute is perpendicular to the rear side of the handpiece. The airflow tends to form vortexes on the upper side of the volute, causing a part of the airflow kinetic energy to be lost before it can enter the air inlet of the fan. At the same time, the vortexes gathering at the two places cause large gas fluctuations and easily generate noise.

[0004] Therefore, it is urgent to design a diversion structure and an integrated stove to solve the above problems. Utility Model Content

[0005] One purpose of the utility model is to provide a flow guiding structure that can eliminate the situation where eddy currents gather in the air duct, reduce gas fluctuations, increase wind speed, and reduce noise.

[0006] Another object of the present invention is to provide an integrated stove with a fan having better exhaust effect and lower noise.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] The diversion structure includes:

[0009] The handpiece has at least a portion of an air duct formed therein, an air inlet member being provided at an air inlet end of the air duct, a second air guide member being provided beside a bottom of the air inlet member, the second air guide member being configured to guide the airflow downward;

[0010] The fan assembly is located on the lower side of the above-mentioned air duct. The above-mentioned fan assembly includes a volute, a fan and a first guide member. The front side of the above-mentioned volute forms an air inlet. The above-mentioned fan is rotatably connected to the above-mentioned volute and is arranged toward the above-mentioned air inlet. The above-mentioned first guide member is arranged at the top of the above-mentioned volute and is configured to guide the airflow toward the above-mentioned air inlet.

[0011] As an optional solution, the cross section of the first flow guide is arc-shaped; and / or

[0012] The cross section of the second flow guide is arc-shaped.

[0013] As an optional solution, the projection of the second air guide in the up-down direction is located outside the projection of the opening of the air inlet member in the up-down direction.

[0014] As an optional solution, the projection of the opening of the air inlet member in the up-down direction falls within the projection of the first air guide member in the up-down direction.

[0015] As an optional solution, the head further includes a flow guide assembly, the flow guide assembly includes a third flow guide member, the third flow guide member is connected to the side wall of the air duct, and the cross-section of the third flow guide member is wavy.

[0016] As an optional solution, the above-mentioned nose includes a front panel and a rear panel, which are connected and enclosed to form at least part of the above-mentioned air duct, the first side panel of the above-mentioned front panel is opposite to the above-mentioned rear panel and is arranged at intervals, and the above-mentioned first side panel and the above-mentioned rear panel are both provided with the above-mentioned third air guide member on the side facing the above-mentioned air duct.

[0017] As an optional solution, in the two opposite third 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.

[0018] As an optional solution, the angle between two adjacent inclined surfaces forming the waves on the third guide member is in the range of 90° to 120°.

[0019] As an optional solution, the above-mentioned guide component also includes a sound absorbing member, which is clamped between the above-mentioned third guide member and the above-mentioned air duct side wall. The above-mentioned third guide member has multiple through holes, and a sound cavity is formed between the above-mentioned third guide member and the above-mentioned sound absorbing member.

[0020] The integrated stove comprises a frame and the above-mentioned air guide structure, the above-mentioned head is installed on the above-mentioned frame, and the above-mentioned fan assembly is installed inside the above-mentioned frame.

[0021] The beneficial effects of the present invention are:

[0022] The utility model provides a guide structure. After the fan is started, the air flows in from the air inlet due to the suction force. After the second guide is added, according to the Coanda effect (wall attachment effect) of the fluid, the second guide covers the area behind the air inlet where vortices are prone to appear, and continues to guide the airflow downward to the top of the volute. After the first guide is added, the first guide covers the right-angled area above the volute that is prone to form vortices. The airflow continues to follow the first guide to the front side of the volute and then enters the air inlet. In the process of the air flow in the air duct and entering the air inlet, 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 the gas fluctuation is reduced, and on the other hand, the obstruction of the vortex to the airflow is reduced, so that the gas flow is faster, the fan efficiency is improved, and the wind speed is increased.

[0023] The utility model also provides an integrated stove, which includes a frame and the above-mentioned air guide structure, wherein the head is mounted on the rear side of the frame, and the fan assembly is mounted inside the frame. The above-mentioned integrated stove adopts the above-mentioned air guide structure, so that the fan has a better exhaust effect and lower noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the diversion structure provided by an embodiment of the present utility model at a first viewing angle;

[0025] Figure 2 This is a schematic structural diagram of the diversion structure provided by an embodiment of the present utility model at a second viewing angle;

[0026] Figure 3 This is a schematic structural diagram of an integrated stove provided by an embodiment of the present utility model;

[0027] Figure 4 This is an exploded view of the handpiece provided by an embodiment of the present utility model;

[0028] Figure 5 This is a cross-sectional view of the side view of the nose provided by an embodiment of the utility model;

[0029] Figure 6 This is a schematic structural diagram of a flow guide assembly provided by an embodiment of the present utility model;

[0030] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0031] Figure 8 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;

[0032] Figure 9 yes Figure 8 Enlarged view of point B in the middle.

[0033] In the picture:

[0034] 100, nose; 10, dash panel; 11, first side panel; 12, second side panel;

[0035] 20. Rear panel; 30. Air duct;

[0036] 40. Flow guide assembly; 41. Third flow guide member; 411. Through hole; 412. Wave crest; 413. Wave trough; 414. Connecting portion; 42. Sound absorbing member; 43. Sound cavity; 431. Sub-sound cavity;

[0037] 50. Air inlet member; 60. Second air guide member; 70. Base;

[0038] 200 , fan assembly; 210 , fan; 220 , volute; 230 , air inlet; 240 , first air guide; 300 , frame; 310 , bellows. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] This embodiment provides a flow guiding structure that can eliminate the eddy current accumulation in the air duct 30, reduce gas fluctuations, increase wind speed, and reduce noise. Figure 1 and Figure 2 As shown, the air guide structure includes a head 100 and a fan assembly 200, and at least a portion of the air duct 30 is formed inside the head 100 ( Figure 1 The front side of the middle head 100 is not shown, and the air inlet direction is from top to bottom), an air inlet piece 50 is provided at the air inlet end of the air duct 30, and a second air guide piece 60 is provided beside the bottom of the air inlet piece 50, and the second air guide piece 60 is configured to guide the airflow downward; the fan assembly 200 is located on the lower side of the air duct 30, and the fan assembly 200 includes a volute 220, a fan 210 and a first air guide piece 240. An air inlet 230 is formed on the front side of the volute 220, and the fan 210 is rotatably connected to the volute 220 and is arranged toward the air inlet 230. The first air guide piece 240 is provided at the top of the volute 220 and is configured to guide the airflow toward the air inlet 230.

[0044] With the above-mentioned flow guide structure, after the fan 210 is started, the air flow enters from the air inlet member 50 due to the suction force. After the second flow guide member 60 is added, according to the fluid Coanda effect (wall attachment effect), the second flow guide member 60 covers the area behind the air inlet 230 where vortices are prone to occur, and continues to guide the air flow downward to the top of the volute 220. After the first flow guide member 240 is added, the first flow guide member 240 covers the right-angled area above the volute 220 that is prone to vortex formation. The air flow continues to follow the first flow guide member 240 to the front side of the volute 220, and then enters the air inlet 230. In the process of the air flow in the air duct 30 and entering the air inlet 230, 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 air flow is reduced, making the gas flow faster, improving the efficiency of the fan 210, and increasing the wind speed.

[0045] Alternatively, as Figure 1 As shown, the cross-sections of the second flow guide 60 and the first flow guide 240 are arc-shaped, achieving a relatively gentle flow guiding effect. In other embodiments, the cross-sections of the second flow guide 60 and the first flow guide 240 can also be linear, which is not limited here.

[0046] Alternatively, as Figure 1 As shown, the projection of the second air guide 60 in the vertical direction is located outside the projection of the opening of the air inlet 50 in the vertical direction. This arrangement makes the setting of the second air guide 60 not affect the air flow entering from the air inlet 50.

[0047] Alternatively, as Figure 1 As shown, the projection of the opening of the air inlet member 50 in the vertical direction falls within the projection of the first air guide member 240 in the vertical direction. Figure 5 The airflow in the air duct 30 acts on the first guide member 240 and is guided to the air inlet 230 .

[0048] Alternatively, as Figure 1 、 Figure 2 and Figure 4 As shown, the head 100 also includes a flow guide assembly 40, which includes a third flow guide member 41. The third flow guide member 41 is connected to the side wall of the air duct 30, and the cross-section of the third flow guide member 41 is wavy. Through this arrangement, the third flow guide member 41 forms a convex and concave surface that is approximately triangular, allowing the airflow to flow along the extension direction of the wave crest 412 or the wave trough 413, which has a regularizing effect on the airflow in the air duct 30, thereby reducing the fluctuation amplitude of the airflow and reducing the noise caused by the gas flow.

[0049] Alternatively, as Figure 3-Figure 5 As shown, the frame 300 includes a front panel 10 and a rear panel 20, which are connected and enclose at least a portion of an air duct 30. The first side panel 11 of the front panel 10 is opposite and spaced from the rear panel 20. The first side panel 11 and the rear panel 20 are both provided with third air guides 41 on the side facing the air duct 30. This arrangement, in which the third air guides 41 are provided on both opposing side walls of the air duct 30, further regulates the airflow.

[0050] Among them, one end of the second guide member 60 is connected to the air inlet member 50 or the rear plate 20, and the other end of the second guide member 60 is connected to the rear plate 20. The specific connection method can be welding or connection through fasteners, etc., which is not limited here. Figure 2 As shown, the two ends of the first flow guide 240 are respectively connected to the front side and the rear side of the volute 220. The specific connection method can be welding or connection through fasteners, etc., which is not limited here.

[0051] Alternatively, as Figure 8 and Figure 9As shown, the crests 412 of one of the two opposing third flow guides 41 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.

[0052] Optionally, the angle between two adjacent inclined surfaces forming the wave on the third flow guide 41 ranges from 90° to 120°. This arrangement effectively regularizes the airflow while preventing a narrow angle from excessively dividing the airflow and affecting the gas flow rate. It should be understood that the two adjacent inclined surfaces refer to the two inclined surfaces that form a wave crest 412 or a wave trough 413.

[0053] Alternatively, see Figure 4 、 Figure 6 and Figure 7 The air guide assembly 40 further includes a sound absorbing member 42, which is sandwiched between the third air guide member 41 and the side wall of the air duct 30. The third air guide member 41 has a plurality of through holes 411, and a sound cavity 43 is formed between the third air guide member 41 and the sound absorbing member 42. When the air flows through the air duct 30, the third air guide member 41 has a certain perforation rate due to the plurality of through holes 411. According to the noise reduction principle of the perforated plate lined with sound absorbing material, the calculation method of the operating frequency of the sound absorbing member 42 is: L: thickness of the air layer (thickness of the acoustic cavity); t: thickness of the inner panel; d: hole diameter; c: speed of sound; P: perforation rate. Since an acoustic cavity 43 is formed between the third flow guide 41 and the sound absorbing member 42, after calculation, f is made to fall within the frequency range generated by the head 100, 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. The first side panel 11 and the rear panel 20 are both provided with the flow guide component 40, which has a better noise reduction effect and improves the uniformity of noise reduction, and more effectively reduces the noise in the head 100 due to the agitation of the airflow or the noise of the fan 210 itself transmitted to the position of the head 100.

[0054] 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.

[0055] Alternatively, as Figure 4 As shown, the front panel 10 further includes two second side panels 12 , which are respectively connected to two opposite sides of the first side panel 11 , and the two second side panels 12 are connected to the rear panel 20 to enclose at least part of the air duct 30 .

[0056] Alternatively, as Figure 4 and Figure 5As shown, the head 100 also includes a base 70. The lower sides of the front panel 10 and the rear panel 20 are connected to the base 70. The base 70 serves to support the entire head 100. The airflow enters the air duct 30 from the air inlet piece 50 and flows out from the base 70 into the top of the volute 220.

[0057] Alternatively, as Figure 3-Figure 5 As shown, the base 70 is installed on the frame 300 (not shown). Under the action of the fan 210, air flows in from the air inlet 50, flows out from the base 70, and enters the fan assembly 200 installed on the frame 300.

[0058] Specifically, if Figure 3 As shown, a wind box 310 is formed inside the frame 300 , and the fan assembly 200 is mounted on the wind box 310 .

[0059] Alternatively, as Figure 7 As shown, the plurality of troughs 413 of the first flow guide 240 and the sound absorbing member 42 are arranged in contact with each other to form a plurality of sub-cavities 431. With the above arrangement, the cavity thickness of each sub-cavity 431 is in a variable value, which can achieve a wide frequency noise reduction effect.

[0060] Alternatively, as Figure 7 As shown, connecting portions 414 are formed at both ends of the first flow guide 240 , and the connecting portions 414 are bent. The connecting portions 414 are used to connect to the rear panel 20 or the first side panel 11 , and the setting of the connecting portions 414 ensures that the sound absorbing member 42 can be accommodated in the first flow guide 240 .

[0061] This embodiment also provides an integrated stove, such as Figure 3 As shown, the integrated stove includes a frame 300 and the above-mentioned guide structure, the head 100 is installed on the rear side of the frame 300, and the fan assembly 200 is installed inside the frame 300. The above-mentioned integrated stove, by adopting the above-mentioned guide structure, has a better exhaust effect of the fan 210 and less noise.

[0062] 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. The flow guide structure is characterized by: include: A machine head (100), wherein at least a portion of an air duct (30) is formed inside the machine head (100), an air inlet member (50) is provided at an air inlet end of the air duct (30), a second air guide member (60) is provided beside a bottom of the air inlet member (50), and the second air guide member (60) is configured to guide airflow downward; A fan assembly (200) is located at the lower side of the air duct (30), and the fan assembly (200) includes a volute (220), a fan (210) and a first flow guide (240). An air inlet (230) is formed on the front side of the volute (220). The fan (210) is rotatably connected to the volute (220) and is arranged toward the air inlet (230). The first flow guide (240) is arranged at the top of the volute (220) and is configured to guide the airflow toward the air inlet (230).

2. The flow guide structure according to claim 1, characterized in that: The cross section of the first flow guide (240) is arc-shaped; and / or The cross section of the second flow guide (60) is arc-shaped.

3. The flow guide structure according to claim 1, characterized in that: The projection of the second air guide (60) in the up-down direction is located outside the projection of the opening of the air inlet (50) in the up-down direction.

4. The flow guide structure according to claim 1, characterized in that: The projection of the opening of the air inlet member (50) in the up-down direction falls within the projection of the first air guide member (240) in the up-down direction.

5. The flow guide structure according to any one of claims 1 to 4, characterized in that: The head (100) further comprises a flow guide assembly (40), wherein the flow guide assembly (40) comprises a third flow guide member (41), wherein the third flow guide member (41) is connected to the side wall of the air duct (30), and the cross section of the third flow guide member (41) is wavy.

6. The flow guide structure according to claim 5, characterized in that: The machine head (100) includes a front panel (10) and a rear panel (20), wherein the front panel (10) and the rear panel (20) are connected and enclose at least a portion of the air duct (30), and the first side panel (11) of the front panel (10) is opposite to and spaced from the rear panel (20), and the first side panel (11) and the rear panel (20) are both provided with the third air guide (41) on the side facing the air duct (30).

7. The flow guide structure according to claim 6, characterized in that: In the two opposite third 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.

8. The flow guide structure according to claim 5, characterized in that: The angle between two adjacent inclined surfaces forming waves on the third flow guide (41) ranges from 90° to 120°.

9. The flow guide structure according to claim 5, characterized in that: The flow guide assembly (40) further includes a sound absorbing member (42), the sound absorbing member (42) being sandwiched between the third flow guide member (41) and the side wall of the air duct (30), the third flow guide member (41) being provided with a plurality of through holes (411), and a sound cavity (43) being formed between the third flow guide member (41) and the sound absorbing member (42).

10. Integrated stove, characterized in that: It comprises a frame (300) and the guide structure according to any one of claims 1 to 9, wherein the head (100) is installed on the frame (300), and the fan assembly (200) is installed inside the frame (300).

Images