A high-temperature-resistant desktop range hood

Abstract

This invention discloses a high-temperature resistant desktop range hood, belonging to the field of range hood technology. It includes a base, a range hood housing, and a smoke collection hood. The range hood housing is located on top of the base, with an air inlet on the front and an air outlet on the rear. The smoke collection hood is located at the air inlet. A fireproof recess is formed between the front of the base and the front of the lower surface of the range hood housing. A protruding block is provided on the front of the base, extending from the fireproof recess towards the bottom of the base. This high-temperature resistant desktop range hood solves the problem of current desktop range hoods where the area near the flame is not heat-resistant and easily ages.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a high-temperature resistant desktop range hood. Background Technology

[0002] A desktop range hood is a fume extraction device placed on a table for use in scenarios such as self-service barbecues or hot pots. For example, Chinese patent document CN215523431U discloses a portable desktop range hood. In this range hood, the support legs connected to the outer casing on the base are straight tubes. When engaging in self-service barbecues or hot pots with open flames, the desktop range hood needs to be close to the pot to achieve a fume extraction effect. However, since the flame is radial, the outermost edge of the flame has the highest temperature. This high temperature easily affects the support legs, and the effect is more pronounced closer to the connection between the support legs and the outer casing. With prolonged use, this area is more prone to aging than other parts, thus affecting the lifespan of the range hood. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the present invention provides a high-temperature resistant desktop range hood to solve the above-mentioned problems.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a high-temperature resistant desktop range hood, including a base, a range hood shell and a smoke collection hood;

[0005] The range hood housing is located on top of the base, the front side of the range hood housing has an air inlet, the rear side of the range hood housing has an air outlet, and the smoke collection hood is located at the air inlet;

[0006] A fireproof recess is formed between the front side of the base and the front side of the lower surface of the range hood housing.

[0007] Preferably, the angle α between the front side of the base and the bottom line formed by the bottom end of the range hood housing is greater than 60° and less than 90°, so as to form the fireproof recess.

[0008] Optionally, the front side of the base is provided with a protruding block, which extends from the fireproof recess toward the bottom of the base.

[0009] Specifically, both the base and the range hood housing are made of high-temperature resistant materials.

[0010] It is worth noting that the smoke collection hood includes a metal filter screen, which is made of aluminum alloy.

[0011] Preferably, the smoke hood includes a front cover and a rear cover; the metal filter is disposed within the inner ring of the front cover, and the rear cover is connected to the rear side of the front cover to fix the metal filter within the inner ring of the front cover;

[0012] An oil drain port is provided on the bottom side of the inner ring of the front cover. The lower end of the oil drain port is connected to the oil collection groove provided on the base. The metal filter screen is located on the upper side of the oil drain port to divide the oil drain port into a front oil drain section and a rear oil drain section.

[0013] The range hood housing contains a fan, and the fan blades have an oil sludge flow channel directly below them. The oil sludge flow channel extends toward and into the rear oil discharge section.

[0014] Optionally, the smoke hood further includes a partition, which is connected to the rear side of the rear cover; the partition is provided with a honeycomb filter.

[0015] The partition is provided with a guide member on its rear side. The surface of the guide member is provided with a guide groove. One end of the guide groove extends toward the inside of the range hood housing, and the other end of the guide groove extends toward the oil drain port. The partition is provided with an opening between the guide groove and the oil drain port. The oil flow channel is provided in the guide groove and extends through the opening to the rear oil drain section of the oil drain port.

[0016] Specifically, the range hood housing is provided with a fan base and a guide hood connected to each other. The fan base is located near the air outlet of the range hood housing, and the guide hood is located near the air inlet of the range hood housing.

[0017] The motor of the fan is installed inside the fan base, and the rotation axis of the motor extends in the direction of the guide shroud. The fan blades are connected to the rotation axis of the motor, and the fan blades are located in the inner cavity of the guide shroud.

[0018] The oil sludge flow channel is located at the bottom of the flow guide and communicates with the inner cavity of the flow guide.

[0019] It is worth noting that the air guide is funnel-shaped, with the end of the air guide with the smallest cross-sectional area located near the air inlet of the range hood casing, and the end of the air guide with the largest area connected to the fan base.

[0020] The guide shroud has a first flange on the side near the fan base, and the fan base has a second flange on the side near the guide shroud. The first flange is sleeved on the second flange.

[0021] Preferably, the bottom of the base is provided with a bracket, the oil collection groove is disposed in the bracket, and the upper surface of the bracket is provided with an oil pipe connection hole;

[0022] The base is equipped with an oil collection pipe. The upper end of the oil collection pipe is connected to the oil drain port, and the lower end of the oil collection pipe passes through the oil pipe connection hole and is connected to the oil collection groove.

[0023] The support structure is divided into a top component, a middle component, and a bottom component from top to bottom;

[0024] The middle component has an oil collecting chamber, and the oil collecting groove is disposed in the oil collecting chamber;

[0025] The oil pipe connection hole is provided through the top component, and the oil collecting chamber is connected to the oil drain port through the oil pipe connection hole;

[0026] The bottom component is connected to the bottom of the base.

[0027] The beneficial effects of this invention are as follows: In the high-temperature resistant desktop range hood, the air inlet, smoke collection hood, and air outlet are designed to achieve the purpose of smoke extraction and oil filtration. By providing the fireproof recesses, the recessed structure avoids flames, thereby achieving high-temperature resistance and preventing the area near the flame from aging easily. In addition, the protrusions of the raised blocks reduce the surface area exposed to heat radiation, thus extending the lifespan of the desktop range hood. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a high-temperature resistant desktop range hood in one embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional view of the range hood casing and its internal structure in one embodiment of the present invention;

[0030] Figure 3 for Figure 2 An enlarged schematic diagram of the dashed circle A;

[0031] Figure 4 This is a schematic diagram of the structure of the air guide cover and the fan base in one embodiment of the present invention;

[0032] Figure 5 This is an exploded view of a smoke hood in one embodiment of the present invention;

[0033] Figure 6 This is a cross-sectional view of the front cover and the metal filter screen in one embodiment of the present invention;

[0034] Figure 7 This is a cross-sectional view of the base in one embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the bracket and the oil collection tank in one embodiment of the present invention;

[0036] Figure 9 This is a top-view cross-sectional view of the base and the protrusion block in one embodiment of the present invention;

[0037] In the diagram: 1. Base; 10. Fireproof recess; 11. Protruding block; 12. Oil collection trough; 13. Oil collection pipe; 2. Range hood casing; 21. Fan; 211. Motor; 212. Fan blade; 22. Oil sludge flow channel; 23. Guide hood; 231. First flange; 24. Fan base; 241. Second flange; 3. Smoke hood; 31. Front cover; 32. Metal filter; 33. Rear cover; 34. Oil outlet; 341. Front oil outlet; 342. Rear oil outlet; 35. Partition; 351. Honeycomb filter; 352. Guide component; 353. Guide groove; 354. Opening; 4. Bracket; 41. Top component; 411. Oil pipe connection hole; 412. Wire carrier groove; 42. Middle component; 421. Oil collection chamber; 43. Bottom component; 431. Wire clearance hole; 432. Power input port; 5. Wire. Detailed Implementation

[0038] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figure 1-9 As shown, a high-temperature resistant desktop range hood includes a base 1, a range hood housing 2, and a smoke collection hood 3;

[0040] like Figure 2 As shown, the range hood housing 2 is located on the top of the base 1, the front side of the range hood housing 2 is provided with an air inlet, the rear side of the range hood housing 2 is provided with an air outlet, and the smoke collection hood 3 is located at the air inlet;

[0041] like Figure 1 As shown, a fireproof recess 10 is formed between the front side of the base 1 and the front side of the lower surface of the range hood housing 2.

[0042] In the aforementioned high-temperature resistant desktop range hood, the inclusion of an air inlet, a smoke collection hood, and an air outlet serves the purpose of smoke extraction and grease filtration. The fireproof recesses 10 utilize a recessed structure to avoid flames, thereby achieving high-temperature resistance and preventing premature aging of areas near flames, thus extending the lifespan of the desktop range hood. Furthermore, during operation, the flowing air itself carries away heat from the surfaces of the range hood casing 2 and the base 1.

[0043] like Figure 1As shown, the included angle α between the front side of the base 1 and the bottom end line formed by the bottom end point of the range hood housing 2 is greater than 60° and less than 90°, forming the fireproof recess 10. By setting the included angle α in the range of greater than 60° and less than 90°, the shape of the formed fireproof recess 10 can adapt to the outermost radial shape of the flame, thereby effectively avoiding the flame. The angle α is non-adjustable and its value is predetermined at the factory.

[0044] like Figure 1 and 9 As shown, a protruding block 11 is provided on the front side of the base 1, and the protruding block 11 extends from the fireproof recess 10 toward the bottom of the base 1.

[0045] A protruding block 11 is provided at the central axis position along the front side of the base 1, and the protruding block 11 is located close to the range hood housing 2. The protrusion of the protruding block 11 can reduce the heat radiation surface. Specifically, the protruding block 11 has an arc-shaped structure, and the apex of the arc-shaped structure is the apex of the protruding block 11. The area of ​​heat radiation received at this position is the smallest, and this position faces the flame.

[0046] The base 1, the range hood housing 2, and the protrusion block 11 are all made of high-temperature resistant materials. The high-temperature resistant materials used to make the base 1, the range hood housing 2, and the protrusion block 11 are ABS, ceramic fiber composite materials, or glass fiber composite materials.

[0047] The smoke collection hood 3 includes a metal filter 32, which is made of aluminum alloy. Because aluminum alloy has high thermal conductivity, it prevents hot air from entering the interior of the range hood casing 2.

[0048] It is worth noting that, such as Figure 5 As shown, the smoke collection hood 3 also includes a front cover 31 and a rear cover 33; the metal filter 32 is disposed in the inner ring of the front cover 31, and the rear cover 33 is connected to the rear side of the front cover 31 to fix the metal filter 32 in the inner ring of the front cover 31.

[0049] like Figure 6 As shown, an oil drain port 34 is provided on the bottom side of the inner ring of the front cover 31. The lower end of the oil drain port 34 is connected to the oil collection groove 12 provided on the base 1. The metal filter screen 32 is located on the upper side of the oil drain port 34 to divide the oil drain port 34 into a front oil drain section 341 and a rear oil drain section 342.

[0050] like Figure 2 As shown, a fan 21 is provided inside the outer casing 2 of the range hood. An oil sludge flow channel 22 is provided on the lower side of the fan blade 212 of the fan 21. The oil sludge flow channel 22 extends toward the rear oil discharge section 342 and extends into the rear oil discharge section 342.

[0051] When the desktop range hood is in operation, the metal filter 32 cools the grease, causing some of the grease to condense on it. This grease then flows downwards along the filter 32 to the bottom of the inner ring of the front cover 31, where it drains through the front exhaust section 341. The remaining cooled grease may enter the interior of the range hood casing 2, where it comes into contact with the fan blades 212, causing grease to condense on them. The rotating fan 21 then flings the grease off the blades, which finally accumulate in the grease channel 22 located directly below the blades. From there, the grease flows through the channel to the exhaust port 34 and drains through the rear exhaust section 342. Thus, dividing the exhaust port 34 into the front exhaust section 341 and the rear exhaust section 342 via the metal filter 32 ensures efficient grease drainage both before and after the filter 32.

[0052] Preferred, such as Figure 5 As shown, the smoke collection hood 3 also includes a partition 35, which is connected to the rear side of the rear cover 33; the partition 35 is provided with a honeycomb filter 351;

[0053] The partition 35 is provided with a guide member 352 on its rear side. The surface of the guide member 352 is provided with a guide groove 353. One end of the guide groove 353 extends toward the interior of the range hood housing 2, and the other end of the guide groove 353 extends toward the oil drain port 34. The partition 35 is provided with an opening 354 between the guide groove 353 and the oil drain port 34. The oil sludge flow channel 22 is provided in the guide groove 353, and the oil sludge flow channel 22 extends through the opening 354 to the rear oil drain section 342 of the oil drain port 34.

[0054] The first function of the partition 35 is to serve as a mounting base for the front cover 31, the metal filter 32, and the rear cover 33. This is achieved by setting clips on the partition 35 and snap-fit ​​holes on the range hood housing 2. The second function of the partition 35 is to further filter the fumes through the honeycomb filter 351, allowing the fumes to flow along the gaps between the honeycomb filter 351 and the metal filter 32 to the oil drain 34. The third function of the partition 35 is to guide the oil flow channel 22 through the guide member 352, which has a guide groove 353, ensuring a stable flow of oil to the rear oil drain section 342 of the oil drain 34.

[0055] Specifically, such as Figure 2 and 4 As shown, the range hood housing 2 is provided with a fan base 24 and a guide hood 23 connected to each other. The fan base 24 is located near the air outlet of the range hood housing 2, and the guide hood 23 is located near the air inlet of the range hood housing 2.

[0056] The motor 211 of the fan 21 is disposed inside the fan base 24, and the rotation axis of the motor 211 extends in the direction of the guide shroud 23. The fan blade 212 of the fan 21 is connected to the rotation axis of the motor 211, and the fan blade 212 is located in the inner cavity of the guide shroud 23.

[0057] The oil sludge flow channel 22 is located at the bottom of the flow guide shroud 23 and communicates with the inner cavity of the flow guide shroud 23.

[0058] The fan 21 is connected to the inner wall of the range hood housing 2 via the fan base 24, thus being installed inside the range hood housing 2. When the desktop range hood is running, some of the cooled fumes will enter the interior of the range hood housing 2 and then come into contact with the fan blades 212, causing the grease to condense on the fan blades 212. The rotating fan 21 will cause the grease on the fan blades 212 to be thrown out to the guide shroud 23. The grease flows downward along the guide shroud 23 and finally condenses in the grease channel 22 located at the bottom of the guide shroud 23. Then, it flows through the grease channel 22 to the oil outlet 34 and flows away through the rear oil discharge section 342.

[0059] Optional, such as Figure 2 and 4 As shown, the air guide 23 is trumpet-shaped, with the end of the air guide 23 with the smallest cross-sectional area close to the air inlet of the range hood housing 2. Specifically, the end of the air guide 23 with the smallest cross-sectional area is close to the honeycomb filter 351 of the partition 35 of the smoke collection hood 3, and the end of the air guide 23 with the largest area is connected to the fan base 24.

[0060] This configuration can convert high-speed, low-static-pressure airflow into low-speed, high-static-pressure usable energy, while reducing the noise of the airflow entering the range hood casing 2.

[0061] like Figure 3 As shown, the side of the air guide shroud 23 near the fan base 24 is provided with a first flange 231, and the side of the fan base 24 near the air guide shroud 23 is provided with a second flange 241. The first flange 231 is sleeved on the second flange 241 to form an interlocking structure.

[0062] The flow guide 23 and the fan base 24 are connected by a combination of the first flange 231 and the second flange 241, so that the connection surface of the flow guide 23 and the fan base 24 forms an S-shaped interlocking structure, thereby improving the sealing performance, preventing oil stains from seeping out, reducing the amount of oil stains seeping out to the outer surface of the range hood housing 2 or seeping out and entering the interior of the base 1, and improving the service life of the equipment.

[0063] Preferred, such as Figure 7As shown, a support 4 is provided at the bottom of the base 1, the oil collection tank 12 is provided in the support 4, and an oil pipe connection hole 411 is provided on the upper surface of the support 4.

[0064] The base 1 is provided with an oil collection pipe 13. The upper end of the oil collection pipe 13 is connected to the oil drain port 34, and the lower end of the oil collection pipe 13 passes through the oil pipe connection hole 411 and is connected to the oil collection groove 12.

[0065] After passing through the oil drain 34, the oil will enter the oil collection pipe 13. Then, under the action of gravity, the oil will flow downwards along the oil collection pipe 13 and enter the oil collection tank 12. The oil collection tank 12 is a detachable structure. After the oil collection tank 12 is removed, the oil in the oil collection tank 12 can be poured out.

[0066] like Figure 8 As shown, the bracket 4 is divided into a top component 41, a middle component 42 and a bottom component 43 from top to bottom; in this embodiment, the top component 41, the middle component 42 and the bottom component 43 are connected sequentially from top to bottom;

[0067] The middle component 42 has an oil collecting cavity 421, and the oil collecting groove 12 is disposed in the oil collecting cavity 421;

[0068] The oil pipe connection hole 411 is provided through the top component 41, and the oil collection chamber 421 is connected to the oil drain port 34 through the oil pipe connection hole 411;

[0069] The bottom component 43 is connected to the bottom of the base 1.

[0070] The bottom component 43 serves as the bottom support of the bracket 4. The middle component 42 is hollowed out to form an oil collection cavity 421 to facilitate the insertion of the oil collection tank 12. The top component 41 serves as a top cover and has an oil pipe connection hole 411 to guide oil from the oil pipe connection hole 411 into the oil collection tank 12 located in the oil collection cavity 421.

[0071] Preferred, such as Figure 8 As shown, the upper surface of the top component 41 is provided with a wire carrier groove 412, which is used to accommodate the wire 5 bent into a U-shape;

[0072] The bottom component 43 has a wire clearance hole 431 on its side, and the wire clearance hole 431 passes through the bottom component 43 and communicates with the inner cavity of the bottom component 43; the bottom component 43 also has a power input port 432 that communicates with its inner cavity.

[0073] One end of the wire 5 is electrically connected to the fan 21, and the other end of the wire 5 passes through the wire clearance hole 431 and the inner cavity of the bottom component 43 and is electrically connected to the power input port 432.

[0074] After the power input port 432 is connected to the indoor socket via an external conductive connection, it can supply power to the motor 211 of the fan 21, enabling the fan 21 to operate. During wiring, the wire 5 is bent into a U-shape, and the U-shaped part is inserted into the wire carrier groove 412. The two ends of the wire 5 are led out from the wire carrier groove 412 and connected to the motor 211 and passed into the wire clearance hole 431, respectively. If condensation occurs inside the range hood casing 2 and flows downward along the wire 5, the condensation will accumulate in the wire carrier groove 412 when it flows downward along the wire 5 to the U-shape. This prevents the condensation from flowing further downward and entering the inner cavity of the bottom component 43, thereby avoiding a short circuit in the power input port 432.

[0075] Optional, such as Figure 1 and 7 As shown, the base 1 is shaped like a frustum. Because the frustum-shaped base 1 is narrower at the top and wider at the bottom, it effectively avoids flames. Combined with the angle greater than 60° and less than 90° formed between the range hood housing 2 and the base 1, it creates a recess between the two to prevent open flames.

[0076] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A high-temperature resistant desktop range hood, characterized in that: Includes the base, range hood housing, and smoke collection hood; The range hood housing is located on top of the base, the front side of the range hood housing has an air inlet, the rear side of the range hood housing has an air outlet, and the smoke collection hood is located at the air inlet; A fireproof recess is formed between the front side of the base and the front side of the lower surface of the range hood housing; the included angle α between the bottom line formed by the front side of the base and the bottommost point of the range hood housing is greater than 60° and less than 90°, so as to form the fireproof recess. The base has a protruding block on its front side, which extends from the fireproof recess toward the bottom of the base. The protrusion block has an arc-shaped structure, and the apex of the arc-shaped structure is the apex of the protrusion block. This position receives the least amount of heat radiation and faces the flame.

2. The high-temperature resistant desktop range hood according to claim 1, characterized in that: Both the base and the range hood casing are made of high-temperature resistant materials.

3. The high-temperature resistant desktop range hood according to claim 1, characterized in that: The smoke collection hood includes a metal filter screen, which is made of aluminum alloy.

4. A high-temperature resistant desktop range hood according to claim 3, characterized in that: The smoke hood includes a front cover and a rear cover; the metal filter is disposed in the inner ring of the front cover, and the rear cover is connected to the rear side of the front cover to fix the metal filter in the inner ring of the front cover. An oil drain port is provided on the bottom side of the inner ring of the front cover. The lower end of the oil drain port is connected to the oil collection groove provided on the base. The metal filter screen is located on the upper side of the oil drain port to divide the oil drain port into a front oil drain section and a rear oil drain section. The range hood housing contains a fan, and the fan blades have an oil sludge flow channel directly below them. The oil sludge flow channel extends toward and into the rear oil discharge section.

5. A high-temperature resistant desktop range hood according to claim 4, characterized in that: The smoke collection hood also includes a partition, which is connected to the rear side of the rear cover; the partition is provided with a honeycomb filter. The partition is provided with a guide member on its rear side. The surface of the guide member is provided with a guide groove. One end of the guide groove extends toward the inside of the range hood housing, and the other end of the guide groove extends toward the oil drain port. The partition is provided with an opening between the guide groove and the oil drain port. The oil flow channel is provided in the guide groove and extends through the opening to the rear oil drain section of the oil drain port.

6. A high-temperature resistant desktop range hood according to claim 5, characterized in that: The range hood housing is equipped with a fan base and a guide hood connected to each other. The fan base is located near the air outlet of the range hood housing, and the guide hood is located near the air inlet of the range hood housing. The motor of the fan is installed inside the fan base, and the rotation axis of the motor extends in the direction of the guide shroud. The fan blades are connected to the rotation axis of the motor, and the fan blades are located in the inner cavity of the guide shroud. The oil sludge flow channel is located at the bottom of the flow guide and communicates with the inner cavity of the flow guide.

7. A high-temperature resistant desktop range hood according to claim 6, characterized in that: The air guide is horn-shaped, with the end of the air guide with the smallest cross-sectional area located near the air inlet of the range hood casing, and the end of the air guide with the largest area connected to the fan base. The guide shroud has a first flange on the side near the fan base, and the fan base has a second flange on the side near the guide shroud. The first flange is sleeved on the second flange.

8. A high-temperature resistant desktop range hood according to claim 4, characterized in that: The base has a support at the bottom, the oil collection tank is located inside the support, and the upper surface of the support has an oil pipe connection hole. The base is equipped with an oil collection pipe. The upper end of the oil collection pipe is connected to the oil drain port, and the lower end of the oil collection pipe passes through the oil pipe connection hole and is connected to the oil collection groove. The support structure is divided into a top component, a middle component, and a bottom component from top to bottom; The middle component has an oil collecting chamber, and the oil collecting groove is disposed in the oil collecting chamber; The oil pipe connection hole is provided through the top component, and the oil collecting chamber is connected to the oil drain port through the oil pipe connection hole; The bottom component is connected to the bottom of the base.

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