A kitchen appliance

Abstract

The present invention belongs to the technical field of kitchen appliances and discloses a kitchen appliance. The kitchen appliance includes a housing, a fan, a reducer, a connecting pipe, a check valve, and an adjustment mechanism. The housing is provided with a first smoke outlet and a second smoke outlet. The fan is disposed within the housing, with the fan's air inlet communicating with the first smoke outlet. The fan, the reducer, the connecting pipe, and the check valve are sequentially connected, with the connecting pipe communicating with the second smoke outlet. The adjustment mechanism is configured to adjust the inner diameter of the reducer. By providing the reducer, airflow is blocked at the narrower inner diameter of the reducer, and an adsorption force is generated on the surrounding air at the outlet end of the reducer, thereby generating suction at the second smoke outlet. The inner diameter of the reducer is adjusted by the adjustment mechanism, thereby achieving suction adjustment at the second smoke outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a kitchen appliance. Background Art

[0002] The side-suction range hood includes a shell and a fan. The fan is arranged in the shell. The side of the shell facing the stove is a smoking plate. The smoking plate is provided with a smoking port. The fan draws suction from the smoking port to discharge the smoke near the smoking plate.

[0003] In order to improve the smoke collection effect, the side-suction range hoods in the existing technology are usually equipped with multiple suction ports, which requires the fan to have sufficient suction power, resulting in a large fan size, which is not conducive to the miniaturization design of the side-suction range hood. It requires a large installation space and the user experience is poor.

[0004] Therefore, it is urgent to improve kitchen appliances to solve the above problems. Summary of the Invention

[0005] An object of the present invention is to provide a kitchen appliance that can improve the smoking effect while reducing the power requirement of the fan.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Kitchen appliances, including:

[0008] a housing, wherein the housing is provided with a first smoking port and a second smoking port;

[0009] a fan disposed in the housing, wherein an air inlet of the fan is connected to the first smoking port;

[0010] A reducing pipe, a connecting pipe and a check valve, wherein the fan, the reducing pipe, the connecting pipe and the check valve are connected in sequence, and the connecting pipe is connected to the second smoking port; and

[0011] The adjusting mechanism is configured to adjust the inner diameter of the reducing tube.

[0012] As an optional solution, the adjustment mechanism includes:

[0013] a winding rope, one end of which is fixed to the reducer, and the winding rope is wound around the outer circumference of the reducer; and

[0014] The winding drive device has the other end of the winding rope connected to the output end of the winding drive device, and the winding drive device can wind the winding rope around the output end or release it from the output end.

[0015] As an optional solution, the connection position between the winding rope and the reducer is located in the middle position of the reducer along the length direction of the reducer.

[0016] As an optional solution, the length of the reducer is not less than the maximum outer diameter of the reducer.

[0017] As an optional solution, the connecting pipe includes:

[0018] a connecting pipe portion, connected to the check valve and the reducing pipe respectively; and

[0019] The smoking cavity is communicated with the connecting pipe portion. The smoking cavity is provided with a first air inlet, and the first air inlet is arranged opposite to the second smoking port.

[0020] As an optional solution, the second smoking port is extended along the width direction of the housing; and / or

[0021] One end of the smoking cavity provided with the first air inlet is sealedly connected to the second smoking port.

[0022] As an optional solution, the connecting pipe further includes:

[0023] A check member is provided at the first air inlet, and the check member is configured to only allow one-way flow of air into the smoking chamber.

[0024] As an optional solution, the check member is rotatably connected to the smoking cavity, the check member is located in the inner cavity of the smoking cavity, and the check member can block the first air inlet from the inner side of the smoking cavity.

[0025] As an optional solution, the connecting pipe further includes:

[0026] A sealing member is provided between the smoking cavity and the anti-return member.

[0027] As an optional solution, the kitchen appliance further includes:

[0028] The smoke concentration detection mechanism is arranged on the front side of the shell, and is used to detect the concentration of smoke in the environment.

[0029] Beneficial effects:

[0030] The kitchen appliance proposed by the present invention utilizes a reducer to block airflow at the narrower inner diameter of the reducer. Based on the Venturi principle, high-speed airflow through a narrow channel generates higher pressure and velocity. This creates an adsorption force on the surrounding air at the outlet of the reducer, thereby generating suction at the second smoke outlet. Smoke is drawn through the second smoke outlet into the connecting pipe and then discharged. The inner diameter of the reducer is adjusted by an adjustment mechanism to adjust the suction force at the second smoke outlet, thereby enhancing the smoke-collecting and smoking effect of the side-suction range hood. Furthermore, the suction force at the second smoke outlet is provided by the high pressure and high velocity generated by the reducer, eliminating the need to utilize the suction force of the fan, thereby reducing the fan power requirement and facilitating a reduction in fan size, thereby reducing the size of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of a kitchen appliance provided by an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the internal structure of a kitchen appliance provided by an embodiment of the present invention;

[0033] Figure 3 This is a side view of the kitchen appliance provided by an embodiment of the present invention. Figure 1 ;

[0034] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0035] Figure 5 This is a side view of the kitchen appliance provided by an embodiment of the present invention. Figure 2 ;

[0036] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0037] In the picture:

[0038] 1. Housing; 11. Front side; 111. First smoking port; 112. Second smoking port;

[0039] 2. Fan;

[0040] 3. Reducer;

[0041] 4. Connecting pipe; 41. Connecting pipe portion; 42. Smoking chamber; 421. First air inlet; 43. Check member; 44. Sealing member; 45. Rotating shaft;

[0042] 5. Adjustment mechanism; 51. Winding rope; 52. Winding drive device;

[0043] 6. Bracket;

[0044] 7. Check valve. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will 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 structures.

[0046] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and 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 the present invention in specific circumstances.

[0047] 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. Furthermore, 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.

[0048] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those 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 the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0049] like Figure 1As shown, this embodiment provides a kitchen appliance that can be applied to a side-suction range hood. The kitchen appliance includes a shell 1, which is generally a cubic structure. The front side surface 11 of the shell 1 is an outward-inclined slope from bottom to top. When the smoke is sucked upward, the front side surface 11 of the shell 1 plays a guiding role. At the same time, the lower side of the shell 1 is thinner, which reduces the occupied volume and reserves more operating space for the stove. A first smoke outlet 111 and a second smoke outlet 112 are provided on the front side surface 11 of the shell 1, and the smoke is sucked through the first smoke outlet 111 and the second smoke outlet 112. The first smoke outlet 111 is provided at a lower position of the shell 1, and the second smoke outlet 112 is provided at an upper position of the shell 1. In this embodiment, the first smoke outlet 111 is provided in a circular shape, and the second smoke outlet 112 is provided in a strip shape, extending along the width direction of the shell 1.

[0050] Combine Figure 1 and Figure 2 As shown, the kitchen appliance further includes a fan 2, a reducing pipe 3, a connecting pipe 4, a check valve 7 and an adjustment mechanism 5. The fan 2 is arranged in the housing 1, and the air inlet of the fan 2 is connected to the first smoking port 111. The fan 2, the reducing pipe 3, the connecting pipe 4 and the check valve 7 are connected in sequence, and the connecting pipe 4 is connected to the second smoking port 112. The adjustment mechanism 5 is used to adjust the inner diameter of the reducing pipe 3. Specifically, the connecting pipe 4 is provided with a second air inlet and a first air inlet 421 (refer to Figure 4 As shown in FIG, the second air inlet is connected to the air outlet of the reducing pipe 3, and the first air inlet 421 is connected to the second inlet 112. The air outlet of the connecting pipe 4 is connected to the outside of the housing 1 through the check valve 7. The check valve 7 is provided at the air outlet of the connecting pipe portion 41 to prevent smoke from flowing back into the connecting pipe 4.

[0051] By providing the reducer 3, airflow is obstructed at the narrower inner diameter of the reducer 3. According to the Venturi principle, high-speed airflow through a narrow channel generates higher pressure and velocity. This creates an adsorption force on the surrounding air at the outlet of the reducer 3, thereby generating suction at the second smoke outlet 112. Smoke is drawn through the second smoke outlet 112 into the connecting pipe 4 and then discharged. The inner diameter of the reducer 3 is adjusted by the adjustment mechanism 5. While the outlet pressure and flow rate of the fan 2 remain unchanged, the airflow velocity and pressure at the outlet of the reducer 3 are varied to adjust the suction force at the second smoke outlet 112, thereby improving the smoke collection and extraction efficiency of the side-suction range hood. Furthermore, the suction force at the second smoke outlet 112 is provided by the high pressure and high velocity generated by the reducer 3, without consuming the suction force of the fan 2. This reduces the power requirement of the fan 2, facilitates a reduction in the size of the fan 2, and consequently, the size of the housing 1, facilitating a miniaturized design of the kitchen appliance.

[0052] For more details, please refer to Figure 2The adjustment mechanism 5 includes a winding rope 51 and a winding drive device 52. One end of the winding rope 51 is fixed to the reducer 3 and is wound around the outer circumference of the reducer 3. The other end of the winding rope 51 is connected to the output end of the winding drive device 52. The winding drive device 52 can wind the winding rope 51 around the output end or release it from the output end. In other words, the winding drive device 52 can wind or release the winding rope 51 to change the circumference of the winding rope 51 on the reducer 3. The winding drive device 52 can be a motor.

[0053] The inner diameter of the reducer 3 is adjusted by tightening or loosening the winding rope 51 via the winding drive 52. When the winding rope 51 is tightened, the reducer 3 is tightened, further reducing the minimum inner diameter of the reducer 3. To increase the inner diameter of the reducer 3, the winding drive 52 is controlled to rotate in the opposite direction, loosening the winding rope 51. Due to the resilience of the reducer 3, the reducer 3 expands, thereby increasing its inner diameter. The winding rope 51 is made of an inelastic material, such as a rubber-coated steel wire rope.

[0054] Specifically, the two end points of the winding rope 51 extend in opposite directions, the angle between the two ends of the winding rope 51 is 0°-30°, and the winding rope 51 is wound around the reducer 3 for one circle or slightly more than one circle.

[0055] Optionally, the reducer 3 is made of trifluoropropyl, oxygen-based silicone rubber or natural rubber tube material with a hardness of SA55-80. The wall thickness of the reducer 3 is in the range of 1.5mm-5mm, with good structural strength and good deformation ability.

[0056] In order to make the installation of the reducer 3 at the air outlet of the fan 2 more secure, Figure 2 As shown, the kitchen appliance further comprises a bracket 6, which is a frame structure. The upper side and the lower side of the bracket 6 are provided with mounting holes. Figure 3 and Figure 4 The reducer 3 is provided with flanges at both ends. The reducer 3 is installed in the bracket 6 through the mounting holes, and the flanges at both ends of the reducer 3 are clamped on the outside of the bracket 6. The bracket 6 presses the reducer 3 against the air outlet end of the fan 2. Optionally, the bracket 6, the flanges of the reducer 3, and the flanges of the fan 2 can be connected by bolts to further strengthen the connection between the reducer 3 and the fan 2.

[0057] Alternatively, as Figure 2 As shown, the fixed end of the winding drive device 52 is arranged on one side of the bracket 6, and the winding rope 51 connected to the winding drive device 52 is fixed on the other side of the bracket 6 after winding around the reducer 3. The fixed end of the winding drive device 52 is fixed on the bracket 6, which can prevent the relative position relationship between the winding drive device 52 and the winding rope 51 from changing during use, resulting in uncontrollable deformation of the reducer 3.

[0058] Furthermore, if Figure 2 As shown, when the winding rope 51 is not applying force to the reducer 3, the outer diameter of the center of the reducer 3 is smaller than the outer diameters at its ends. In other words, the reducer 3 is thinner in the center and thicker at its ends. The connection point between the winding rope 51 and the reducer 3 is located in the middle of the reducer 3 along its length. The winding rope 51 is wound around the minimum outer diameter of the reducer 3, which prevents the winding rope 51 from moving around and makes it easier to adjust the minimum inner diameter of the reducer 3.

[0059] Since both ends of the reducer 3 are fixed to the bracket 6, the length of the reducer 3 remains unchanged during the diameter reduction process. If the reducer 3 is shorter, it may not be able to deform to reach the required inner diameter. Therefore, the length of the reducer 3 is set to be not less than the maximum outer diameter of the reducer 3, so as to provide sufficient deformation for the diameter reduction of the reducer 3.

[0060] Furthermore, the kitchen appliance includes a smoke concentration detection mechanism, located on the front side 11 of the housing 1, for detecting ambient smoke concentration. The detected smoke concentration determines the required suction force for the second smoke outlet 112. The winding drive 52 then tightens or loosens the winding rope 51, changing the inner diameter of the reducer 3 and, in turn, the airflow velocity at the outlet of the reducer 3 to adjust the suction force of the second smoke outlet 112. The smoke concentration detection mechanism can utilize an optical or infrared lens.

[0061] Furthermore, if Figure 2 As shown, the connecting pipe 4 includes a connecting pipe portion 41 and a smoking chamber 42. The lower end of the connecting pipe 4 is provided with a flange that cooperates with the bracket 6 to clamp the flange of the reducer 3. Bolts or rivets can be used to further secure the connection. The connecting pipe portion 41 is connected to the check valve 7 and the reducer 3 respectively. The connecting pipe portion 41 is provided with a second air inlet, which is connected to the reducer 3. The smoking chamber 42 is connected to the connecting pipe portion 41. The smoking chamber 42 is provided with a first air inlet 421, which is arranged opposite the second smoking port 112. The connecting pipe portion 41 is connected to the reducer 3 by docking, and the smoking chamber 42 is provided to connect the second smoking port 112 to the reducer 3.

[0062] Alternatively, as Figure 2 As shown, the inner side wall of the smoking cavity 42 is inclined from the first air inlet 421 to the connecting pipe portion 41. The inclined surface guides the airflow, which is beneficial to reducing the resistance to smoke movement, so that the smoke entering the smoking cavity 42 from the second smoking port 112 can be more easily merged into the connecting pipe 4.

[0063] Specifically, combined Figure 5 and Figure 6The second inhalation opening 112 extends along the width of the housing 1. The end of the inhalation chamber 42, where the first air inlet 421 is located, is sealed to the second inhalation opening 112. The second inhalation opening 112 extends across the width of the housing 1, covering a wide smoke adsorption area. The structural design of the inhalation chamber 42 positions the first air inlet 421 and the second inhalation opening 112 directly opposite each other, ensuring adsorption across the entire area of ​​the second inhalation opening 112.

[0064] Since the second smoking port 112 has no active suction, in order to avoid the situation where the resistance at the smoke outlet end is greater than the suction of the second smoking port 112, causing smoke to be discharged from the second smoking port 112, such as Figure 6 As shown, the connecting pipe 4 also includes a check piece 43, which is arranged at the first air inlet 421. The check piece 43 is used to only allow one-way air flow into the smoking cavity 42 to prevent the smoke in the smoking cavity 42 from being discharged outward from the second smoking port 112.

[0065] Specifically, the check member 43 is rotatably connected to the smoking chamber 42 and is located within the interior of the smoking chamber 42. The check member 43 is capable of blocking the first air inlet 421 from the inside of the smoking chamber 42. The check member 43 is in sheet form. To ensure that the resistance caused by the check member 43 during smoking is sufficiently small while maintaining sufficient strength to prevent deformation when closed, it is recommended to use an aluminum alloy sheet or a flame-retardant PE / PC sheet. The thickness of the aluminum alloy sheet should be 0.2mm-0.3mm, and the thickness of the flame-retardant PE / PC sheet should be no greater than 0.5mm. The weight of a single check member 43 should be controlled within 30g.

[0066] In order to improve the sealing effect of the check member 43, as Figure 6 As shown, the connecting pipe 4 further includes a sealing member 44, which is disposed between the smoking chamber 42 and the check member 43. The check member 43 can seal against the sealing member 44. The sealing member 44 surrounds the first air inlet 421 and can be fixed to the inner wall of the smoking chamber 42 by gluing.

[0067] Specifically, the seal 44 is made of foamed elastic silicone rubber with a hardness of SA50-70. In the natural non-working state, the check member 43 presses against the seal 44, causing the seal 44 to be compressed by 0.05mm-0.15mm, thereby ensuring that there is no gap between the check member 43 and the seal 44. Figure 6 As shown, the check member 43 is rotatably connected via a shaft 45, the ends of which are fixed to the side walls of the inhalation chamber 42. A single-side clearance of 0.3mm-0.5mm is provided between the shaft 45 and the check member hole to ensure a low opening force for the check member 43. At the same time, sufficient clearance exists for the check member 43 to effectively contact the sealing member 44 when the check member 43 needs to close, preventing smoke from being discharged from the second inhalation port 112.

[0068] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. 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 kitchen appliance, characterized in that include: A housing (1), wherein the housing (1) is provided with a first smoking port (111) and a second smoking port (112); A fan (2) is disposed in the housing (1), and an air inlet of the fan (2) is connected to the first smoking port (111); A reducing pipe (3), a connecting pipe (4) and a check valve (7); the fan (2), the reducing pipe (3), the connecting pipe (4) and the check valve (7) are connected in sequence; the connecting pipe (4) is connected to the second smoking port (112); as well as An adjusting mechanism (5) is configured to adjust the inner diameter of the reducing tube (3); The connecting pipe (4) comprises: A connecting pipe portion (41) is connected to the check valve (7) and the reducing pipe (3) respectively; and A smoking cavity (42) is connected to the connecting pipe portion (41), and a first air inlet (421) is provided on the smoking cavity (42), and the first air inlet (421) is arranged opposite to the second smoking port (112); A check member (43) is provided at the first air inlet (421), and the check member (43) is configured to only allow one-way flow of air into the smoking chamber (42).

2. The kitchen appliance according to claim 1, characterized in that The regulating mechanism (5) comprises: a winding rope (51), one end of which is fixed to the reducer (3), and the winding rope (51) is wound around the outer circumference of the reducer (3); and A winding drive device (52) is provided, wherein the other end of the winding rope (51) is connected to the output end of the winding drive device (52), and the winding drive device (52) can wind the winding rope (51) around the output end or release it from the output end.

3. The kitchen appliance according to claim 2, characterized in that The connection position between the winding rope (51) and the reducer (3) is located in the middle of the reducer (3) along its length direction.

4. The kitchen appliance according to claim 3, characterized in that The length of the reducer (3) is not less than the maximum outer diameter of the reducer (3).

5. The kitchen appliance according to claim 1, characterized in that The second smoking port (112) is extended along the width direction of the housing (1); and / or One end of the smoking cavity (42) provided with the first air inlet (421) is sealed and connected to the second smoking port (112).

6. The kitchen appliance according to claim 1, characterized in that The check member (43) is rotatably connected to the smoking cavity (42), and the check member (43) is located in the inner cavity of the smoking cavity (42). The check member (43) can block the first air inlet (421) from the inner side of the smoking cavity (42).

7. The kitchen appliance according to claim 6, characterized in that The connecting pipe (4) further comprises: A sealing member (44) is provided between the smoking chamber (42) and the non-return member (43).

8. The kitchen appliance according to any one of claims 1 to 4, characterized in that: The kitchen appliance further comprises: A smoke concentration detection mechanism is provided on the front side (11) of the housing (1), and is used to detect the concentration of smoke in the environment.

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