TWM625530U - Range hood with stably lifting air duct module - Google Patents

Abstract

This creation provides a range hood with stably lifting air duct module, which includes an upper housing, a lower housing, a control module, and a lifting air duct module. The lower housing includes a front shell, an upper shell, and a lower shell. The upper shell is connected with the upper housing. An air suction channel extends from an internal of the lower housing to an internal of the upper housing. An opening is formed in a central area of the lower shell, and the opening is connected with the air suction channel. The control module is arranged in the lower housing. The lifting air duct module is arranged in the air suction duct, and configured to partially enter and exit the air suction duct by an automatic or manual lifting manner.

Description

Range hood with stable lift air duct module

This creation is about a range hood with a stable lift air duct module.

When using frying pans, frying pans, frying pans, and frying pans to cook dishes, a large amount of oil fumes are often emitted, which is not only harmful to human health, but also pollutes the home environment. Therefore, a range hood is required to extract oil fumes. The cooker hood usually rappels down from the roof, but its exhaust port is far away from the source of cooking fumes, such as cooking utensils, so it cannot effectively extract the cooking fumes, and the cooking fumes are easy to escape.

Figure 1 shows an improved range hood. The partial pressure plate can be raised and lowered to expand the ventilation efficiency in the "horizontal" direction, but the ventilation efficiency in the "vertical direction" is not enhanced, but weakened (blocked by the partial pressure plate). Figure 2 shows another improved range hood, which tries to draw air from the rear side of the source of oil fume such as cookware, but only considers the rear side, and the oil fume may still escape from the front side, left side, or right side.

The applicant has proposed a range hood with a lift air duct module in the past, and obtained the patent No. M604382. The applicant has further improved it and proposed this creation.

In view of this, according to a viewpoint of the present creation, a range hood with a stable lift air duct module is proposed, which includes an upper housing base, a lower housing base, a control module, and a lift air duct module. The lower shell base includes a front shell plate, an upper shell plate, and a lower shell plate. The upper shell plate is connected to the upper shell seat. A suction channel extends from the inside of the lower housing to the inside of the upper housing. The lower shell plate is formed with an opening in a central area, and the opening communicates with the air extraction channel. The control module is arranged on the lower shell seat. The lift air duct module is arranged in the air extraction duct, and is configured to partially enter and exit the air extraction duct in an automatic or manual way of raising and lowering.

Optionally, or preferably, the lift air duct module includes an outer surrounding partition plate and an inner layer surrounding partition plate, and the outer layer surrounding partition plate is located between the upper shell seat or the lower shell seat and the inner layer surrounding partition plate.

Optionally, or preferably, the inner layer surrounding the partition plate of the lift air duct module is configured to be fixed.

Optionally, or preferably, the lift air duct module is configured to move the outer layer surrounding partition plate relative to the inner layer surrounding partition plate along a vertical direction.

Optionally, or preferably, the lifting air duct module includes at least one slide rail group, which is arranged between the outer layer surrounding partition plate and the inner layer surrounding partition plate, so that the outer layer surrounding partition plate can move stably relative to the inner layer surrounding partition plate. .

Optionally, or preferably, at least one slide rail group includes a female slide rail and a male slide rail, and the length of the female slide rail is greater than the length of the male slide rail.

Optionally, or preferably, the lift air duct module includes two slide rail groups, which are respectively located on opposite sides of the outer surrounding partition plate, so that the outer layer surrounding partition plate can move more stably relative to the inner layer surrounding partition plate.

Optionally, or preferably, the lift air duct module includes at least one slide rail set, which is arranged between the upper shell seat or the lower shell seat and the outer surrounding partition, so that the outer surrounding partition is relative to the upper shell seat or the lower shell. The housing seat moves stably.

Optionally, or preferably, the lift air duct module includes a lift set configured to drive the outer layer surrounding partition plate to move relative to the inner layer surrounding partition plate.

Optionally, or preferably, the lifting set includes a female element fixed to one of the inner surrounding partition or the outer surrounding partition, and a male element fixed to the inner surrounding partition or the outer surrounding partition. The other of the plates; the female element and the male element are fitted or fitted with each other.

Optionally, or preferably, the female element is fixed to one of the inner surrounding partition or the outer surrounding partition via a female element fastener, and the male element is fixed to the inner layer via a male element fastener. The layer surrounds the separator or the outer layer surrounds the other of the separator.

Optionally, or preferably, the male element is a screw, a gear, a rope, or a belt; the female element is a screw sleeve, a rack, a rope ring, and a belt ring.

Optionally, or preferably, the male element includes a male element body and a male element guard, and the male element guard covers the male element body to prevent the male element body from being contaminated with oil fume.

Optionally, or preferably, the lift air duct module includes a motor configured to drive the male element to move the female element relative to the male element, thereby driving the outer surrounding partition plate to move relative to the inner layer surrounding partition plate.

Alternatively, or preferably, the motor is provided on the female element holder.

Optionally, or preferably, the length of the outer layer surrounding the clapboard of the lift air duct module is less than or equal to the length of the upper shell seat; the length of the inner layer surrounding clapboard is less than or equal to the length of the upper shell seat plus the lower shell seat; And the length of the outer layer surrounding partition plus the length of the inner layer surrounding partition is greater than the length of the upper shell seat plus the length of the lower shell seat.

Optionally, or preferably, the range hood with a stable elevating air duct module of the present invention further includes an air extraction module, which is suitable for extracting oil fume from the extraction air duct.

Optionally, or preferably, at least one air hole is opened on the upper shell seat, so that there is a downward airflow between the upper shell seat and the inner surrounding partition plate, so as to prevent at least one slide rail group from being contaminated with oil fume.

The main feature of the range hood with a stable lift air duct module is the existence of the lift air duct module to approach the sources of oil fume such as oil pans, fryers, frying pans, and frying pans under the range hood, and, The lift air duct module is arranged in the central area of the lower shell plate of the lower shell seat of the cooker hood to align the source of the soot.

Importantly, in order to stabilize the lifting and lowering of the lift air duct module, this creation introduces a slide rail set, so that the lift air duct module can be raised and lowered along the slide rail set, so as to avoid its lifting path being distorted and the upper shell seat or the lower shell seat being distorted. Collision or friction occurs, thus preventing damage caused by collision or noise caused by friction.

In terms of enhancing the stability of the lifting air duct module during lifting, the lifting set of the present invention is fixed in the center of the opening, and is connected to each surrounding partition through each fixing member, so the opposite two surrounding partitions of each surrounding partition are The clapboard (which can be extended to four clapboards) can be evenly stressed during lifting to avoid distortion of the lifting path.

Further, considering that the rail group may be contaminated with oil fume, the dirt of oil fume will accumulate in the groove of the rail group over time, which will cause the rail group to get stuck. Plate, the inner surround baffle is configured to be stationary, so that when the outer surround baffle is lowered, the slit between the upper shell seat and the inner surround baffle can remain intact, that is, the slit and the suction channel are still mutually Isolated, not connected. Therefore, the oil fume mainly flows to the exhaust duct, and hardly flows to the slits existing in the track group. In this way, the track group existing in the slit between the upper housing seat and the inner surrounding partition plate will not be contaminated with oil fume, and further will not be stuck due to the accumulation of dirty oil fume.

Further, in the present invention, at least one air hole is opened on the upper shell seat. Due to the air extraction of the air extraction module, the air flow will flow from the air holes of the upper shell seat into the slit between the upper shell seat and the inner surrounding partition plate, flow down to the opening of the lower shell plate, and then flow from the opening of the lower shell plate. where it flows upwards through the suction duct. Therefore, the airflow flowing in the slit between the upper shell seat and the inner surrounding partition is a downdraft, which can resist the oil fumes Jump up to this slit. In this way, it is possible to further prevent the rail group of the slit existing between the upper shell seat and the inner surrounding partition from being contaminated with oil fume.

The range hood with a stable lift air duct module can bring the following advantages, each of which can exist independently or coexist:

The first advantage: because it is close to the source of oil fume such as oil pan, fryer, frying pan, frying pan, etc., taking into account the oil pumping efficiency of the front, rear, left and right, it can effectively extract oil fume. The pumping efficiency of this creation is more than twice that of conventional range hoods.

The second advantage: Since the oil fume is denser and distributed at a low place, the lift air duct module of this creation can be close to the source of oil fume, and indeed extract the air containing oil fume, instead of extracting the air without oil fume. Traditional range hoods usually draw a lot of fume-free air, resulting in wasted power consumption.

The third advantage: This creation can reduce the rotation speed of the ventilation module because it can effectively extract the oil fume, which has the effect of simple and carbon reduction.

Fourth advantage: When the rotation speed of the ventilation module is reduced, the noise generated by the ventilation module is also reduced, which is beneficial to physical and mental health and home tranquility. In addition to the air extraction module, the source of noise is that if the lift path of the lift air duct module is distorted, it may cause noise due to friction with the upper housing seat or the lower housing seat. This creation strengthens the stability of the lifting air duct module during lifting, so it can also prevent friction noise.

The drawings and detailed descriptions will be described below to make other objectives, advantages, and novel features of the present creation more apparent.

1: Range hood with stable lift air duct module

11A: Upper shell seat

11B: Lower shell seat

112: Front shell plate

113: Upper shell plate

114: Lower shell plate

114C: Central Area

12: Air extraction duct

13: Opening

14: Control module

15: Lifting air duct module

151: Outer Surrounding Partition

152: Inner Surrounding Partition

16: Trapezoidal exhaust nozzle

17: Oil sump

18: Fume exhaust pipe

19: Stomata

21: Exhaust module

27:Fume detector

30: Motor

31: Female slide rail of slide rail group

32: Male slide rail of slide rail group

33: The female component of the lifting set

34: Male component of lifting kit

340: Male component body

341: Male Component Guard

35: Female component fixings

36: Male component holder

L1: The length of the outer surrounding partition

L2: The length of the inner layer surrounding the partition

L3: the length of the upper shell and the lower shell

X, Y, Z: direction

Figure 1 shows a modified range hood.

Figure 2 shows another modified range hood.

3A shows a perspective view of a range hood with a stable lift air duct module according to an embodiment of the present invention. 3B and FIG. 3C are perspective perspective views showing the rising state and the falling state of FIG. 3A , respectively.

FIG. 4 shows a perspective view of a lift air duct module according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the descending state of the range hood with the stable lift air duct module according to an embodiment of the present invention.

FIG. 6 is an exploded perspective view of the slide rail assembly of the range hood with a stable lift air duct module according to an embodiment of the present invention.

FIG. 7A shows a perspective exploded view of a lift set without a protective member of a range hood with a stable lift air duct module according to an embodiment of the present invention. 7B and 7C respectively show a three-dimensional exploded view and a three-dimensional assembly view of a lift set with a protective member of a range hood with a stable lift air duct module according to an embodiment of the present invention.

FIG. 8 shows a front view of a range hood with a stable lift air duct module in a use environment according to an embodiment of the present invention.

Various embodiments of the present creation are provided below. These embodiments are used to illustrate the technical content of the present creation, rather than to limit the scope of rights of the present creation. A feature of one embodiment can be applied to other embodiments by suitable modification, substitution, combination, isolation.

It should be noted that, in this document, unless otherwise specified, having "a" element is not limited to having a single such element, but may include one or more such elements.

In addition, in this document, unless otherwise specified, ordinal numbers such as "first" and "second" are only used to distinguish multiple elements with the same name, and do not mean that there is a rank, hierarchy, or execution order among them , or process sequence. A "first" element and a "second" element may appear together in the same component or separately in different components. The presence of an element with a higher ordinal number does not necessarily imply the presence of another element with a lower ordinal number.

In this article, unless otherwise specified, the so-called feature A "or" (or) or "and/or" (and/or) feature B, refers to the existence of nail alone, the existence of B alone, or the coexistence of A and B ; The so-called feature A "and" (and) or "and" (and) or "and" (and) feature B, is that nail and B exist at the same time; the so-called "include", "include", "have", " "Contain" means including but not limited to.

In addition, in this document, the so-called "upper", "lower", "left", "right", "front", "rear", or "between" and other terms are only used to describe the relationship between multiple elements. Relative position, and can be generalized to include translation, rotation, or mirroring.

Furthermore, herein, unless specifically stated otherwise, "an element is on another element" or the like does not necessarily mean that the element is in contact with the other element.

Furthermore, herein, "preferred" or "better" is used to describe optional or additional elements or features, ie, those elements or features are not required and may be omitted.

In addition, unless otherwise specified herein, the so-called "suitable" or "suitable" for another element means that the other element is not part of the subject matter of the application, but exemplarily or refers to In this context, unless otherwise specified, an element is said to be "suitable" or "suitable for" a configuration or an action, the description of which is characteristic of the element, and does not imply that the configuration has been set or that the action has been performed.

In addition, in this document, unless otherwise specified, the electrical connection of the two elements may include direct connection or indirect connection. In an indirect connection, one or more other elements, such as resistors, capacitors, or inductors, may exist between the two elements. Electrical connections are used to transmit one or more signals, such as DC or AC current or voltage, depending on the application.

Furthermore, herein, unless otherwise specified, a numerical value may encompass a range of ±10% of the numerical value, particularly a range of ±5% of the numerical value. Unless otherwise specified, a numerical range is composed of subranges defined by the lower endpoint, lower quartile, median, higher quartile, and higher endpoint .

FIG. 3A shows a perspective view of a range hood 1 with a stable lift air duct module according to an embodiment of the present invention. 3B and FIG. 3C are perspective perspective views showing the rising state and the falling state of FIG. 3A , respectively.

As shown in FIG. 3A , FIG. 3B , and FIG. 3C , the range hood 1 with a stable lift air duct module of the present invention includes an upper housing base 11A, a lower housing base 11B, a control module 14 , and a lift air Road Module 15. In addition, please refer to FIG. 8 , the range hood 1 with the stable elevating air duct module of the present invention may further include a ventilation module 21 .

The upper housing 11A is connected to the oil fume exhaust pipe 18 to discharge the oil fume to, for example, the outdoors or other oil fume treatment mechanisms. The lower casing 11B includes a front casing 112, a rear casing (not particularly marked), an upper casing 113, a lower casing 114, a left casing (not particularly marked), and a right casing connected to each other The plate (not particularly marked) is in the shape of a rectangular parallelepiped, but it is not limited to this, and other shapes are also possible. The upper case plate 113 is connected to the upper case seat 11A. An air extraction channel 12 extends from the interior of the lower housing 11B to the interior of the upper housing 11A, and is connected to the oil fume exhaust pipe 18 . The lower shell plate 114 is formed with an opening 13 in a central area 114C (see FIG. 3A in particular), and the opening 13 communicates with the air suction channel 12 . The opening 13 is rectangular in this embodiment, but can also be trapezoidal, diamond, circular shape, oval shape and other shapes, the opening 13 is preferably formed as a wide opening instead of a slit shape. In particular, the lift air duct module 15 also has a cross-section (see FIG. 3C in particular), and the shape of the cross-section can correspond to the shape of the opening 13 , so that the air duct inside the lift air duct module 15 is spacious, not present Slot-shaped, in this way, in addition to enhancing the ventilation performance, it can also prevent grease from clogging the air duct.

Referring to FIG. 8 , the air extraction module 21 is disposed in the upper housing 11A, between the oil fume exhaust pipe 18 and the air extraction duct 12 , and is used for extracting oil fume from the air extraction duct 12 . The ventilation module 21 can use general components, and the structure and principle thereof will not be repeated here.

3A, 3B, and 3C, the control module 14 is disposed on the lower housing 11B, optionally, it can be installed on the front housing plate 112 of the lower housing 11B, or can be embedded in the lower housing 11B. The control module 14 is configured to control the switch and rotation speed (and thus the air volume or wind speed) or lighting of the air extraction module 21 of the range hood 1 , and/or the lifting and lowering of the lift air duct module 15 of the present invention. The control module 14 can be a touch panel or a plurality of buttons, and has a processor to perform various operations.

The lift air duct module 15 is disposed in the air extraction duct 12 extending between the interior of the lower housing 11B and the interior of the upper housing 11A. The lift air duct module 15 is configured to partially enter and exit the air extraction duct 12 in an automatic or manual way. In terms of automatic lifting, the control module 14 can be configured to automatically determine the lifting height of the lifting air duct module 15 according to the parameters of the oil fume (for example, the concentration); touch panel or button) to determine the lift height of the lift air duct module 15.

FIG. 4 shows a perspective view of a lift air duct module according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the descending state of the range hood 1 with a stable lift air duct module according to an embodiment of the present invention.

Please refer to FIGS. 3B , 3C , 4 , and 5 , the lift air duct module 15 of the present invention includes an outer surrounding partition 151 and an inner surrounding partition 152 . The outer layer surrounding partition 151 is located in the upper shell seat 11A or the lower shell Between the seat 11B and the inner layer surrounding partition 152 . The outer surrounding partition 151 and the inner surrounding partition 152 are each surrounded by four partitions. The upper end of the outer surrounding partition 151 has an opening to communicate with the air extraction channel 12, and the lower end of the inner surrounding partition 152 can be installed with a Trapezoidal exhaust nozzle 16 or a conical exhaust nozzle. In this creation, the inner layer of the lift air duct module 15 is configured to be fixed around the partition 152 . The lift air duct module 15 is configured to move the outer layer surrounding partition plate 151 relative to the inner layer surrounding partition plate 152 along a vertical direction Z. The outer layer surrounding partition plate 151 and the inner layer surrounding partition plate 152 are preferably made of metal, especially stainless steel, to prevent high temperature melting or oil fume corrosion.

FIG. 6 shows an exploded perspective view of the slide rail set of the range hood 1 with a stable lift air duct module according to an embodiment of the present invention.

Please refer to Figure 4, Figure 5, and Figure 6. In order to stabilize the lifting and lowering of the lifting air duct module, the lifting air duct module 15 of the present creation introduces at least one slide rail group, which is arranged on the outer surrounding partition 151 and the inner surrounding Between the partitions 152, the outer surrounding partition 151 can move stably relative to the inner surrounding partition 152, so as to avoid its lifting path being distorted and colliding or rubbing with the upper shell seat or the lower shell seat, thus preventing the collision caused by the collision or friction. Noise caused by damage or friction.

Specifically, the slide rail set includes a female slide rail 31 and a male slide rail 32 . The length of the female slide rail 31 is greater than the length of the male slide rail 32 , wherein the female slide rail 31 is disposed on the four partitions surrounding the partition plate 151 on the outer layer. One of the plates, and the male sliding rail 32 is disposed on one of the four partitions surrounding the partition 152 in the inner layer. Preferably, the lift air duct module 15 may include two sets of sliding rails, which are respectively located on two opposite sides of the outer surrounding partition 151 , for example, the left and right sides or the front and rear sides.

Here, this creation considers that the rail group may be contaminated with oil fume, and the dirt of oil fume accumulates in the grooves of the rail group over time, which will cause the rail group to get stuck. And the outer layer surrounding partition 151, the inner layer surrounding partition 152 is arranged to be fixed, so that when the outer layer surrounding partition 151 is lowered, the slit between the upper shell seat 11A and the inner layer surrounding partition 152 can be maintained completely. In other words, the slit and the air extraction channel 12 are still isolated from each other and will not communicate with each other. Therefore, the oil fume mainly flows to the air extraction duct 12, and hardly flows to the slits existing in the track group. In this way, the track group existing in the slit between the upper housing seat 11A and the inner surrounding partition plate 152 will not be contaminated with oil fume, and will not be stuck due to the accumulation of dirt from the oil fume.

In a modification example not shown in the drawings, the slide rail group can be changed to be disposed between the upper housing base 11A or the lower housing base 11B and the outer surrounding partition 151, which can also strengthen the lifting air duct module 15 when lifting and lowering. The stability of the system, and it will not encounter the problem of the rail group getting stuck due to the accumulation of fume and dirt.

FIG. 7A shows a perspective exploded view of a lift set without a protective member of the range hood 1 with a stable lift air duct module according to an embodiment of the present invention. FIG. 7B and FIG. 7C respectively show a three-dimensional exploded view and a three-dimensional assembly view of a lift set with a protective member of the range hood 1 with a stable lift air duct module according to an embodiment of the present invention.

3C, FIG. 4, FIG. 5, and FIG. 7A, FIG. 7B, FIG. 7C, the lift air duct module 15 of the present invention includes a lift set configured to drive the outer layer surrounding partition 151 relative to the inner layer surrounding partition Plate 152 moves. Specifically, the lifting set includes a female element 33 (eg, a screw sleeve, a rack, a rope ring, a belt ring) fixed on the inner surrounding partition 152, and a male element 34 (eg, a screw, a gear, a rope) , or belt), fixed to the inner surrounding partition 152; The female element 33 and the male element 34 are fitted or fitted with each other, for example, the screw sleeve and the screw can be fitted with each other.

Further, the female element 33 can be fixed to the inner surrounding spacer 152 via a female element fixing member 35 , and the male element 34 can be fixed to the inner surrounding spacer 152 via a male element fixing member 36 . As shown in the figure, the female component fixing member 35 fixes the female component 33 in the center of the opening 13, and the male component fixing member 36 fixes the male component 34 in the center of the opening 13, so the lifting set as a whole is fixed in the opening 13. central. in this In the embodiment, the female component fixing member 35 and the male component fixing member 36 are both bridge-shaped, but not limited thereto, any shape can be used as long as the entire lifting set can be fixed in the center of the opening 13 . In this way, the two opposing baffles (which can be extended to four baffles) surrounding the baffles can be evenly stressed during lifting, so as to avoid distortion of the lifting path.

In addition, the lift air duct module 15 includes a motor 30 configured to drive the male element 34 to move the female element 33 relative to the male element 34 , thereby driving the outer surrounding partition 151 to move relative to the inner surrounding partition 152 . Preferably, the motor 30 can be provided on a female element holder 35 having a perforation through which the male element 34 can be connected to the motor 30 .

As shown in FIG. 7B and FIG. 7C , the male element 34 may include a male element body 340 and a male element guard 341 . The male element guard 341 covers the male element body 340 to prevent the male element body 340 from being contaminated with oil fume. Movement is not smooth or even completely stuck. In this embodiment, the male element 34 (especially the male element body 340 ) is a screw, the female element 33 is a screw sleeve, the motor 30 can rotate as the screw of the male element body 340 , and the screw and the screw sleeve move relative to each other. Since the inner layer surrounding partition plate 152 is configured to be fixed, the relative movement of the screw and the screw sleeve will cause the outer layer surrounding partition plate 151 to move along a vertical direction Z relative to the inner layer surrounding partition plate 152 . It should be noted that the male element guard 341 does not necessarily rotate with the screw serving as the male element body 340 , and its purpose is to prevent the male element body 340 from being caught with oily fumes. The male element body 340 , the male element guard 341 , and the female element 33 are preferably made of metal, especially stainless steel, to prevent high temperature melting or oil fume corrosion.

FIG. 8 shows a front view of the range hood 1 with a stable lift air duct module in a use environment according to an embodiment of the present invention.

Please refer to FIG. 8 , in this creation, the length L1 of the outer layer surrounding the partition plate 151 of the lift air duct module 15 is less than or equal to the length L3 of the upper shell seat 11A plus the lower shell seat 11B; the length L2 of the inner layer surrounding the partition plate 152 Less than or equal to the length L3 of the upper housing 11A plus the lower housing 11B. However, the outer layer of the lift air duct module 15 The length L1 of the surrounding partition 151 plus the length L2 of the inner surrounding partition 152 is greater than the length L3 of the upper housing 11A plus the lower housing 11B. Through the above-mentioned definition of length, it can be shown that the total length L1+L2 of the lift air duct module 15 of the present invention is different between the ascending state and the descending state.

Please refer to FIGS. 3A , 3B, 3C, and 5 , in the range hood 1 with a stable lift air duct module of the present invention, at least one air hole 19 (in the drawing) is opened on the upper housing base 11A Shown as two air holes 19), there is an air flow, especially a downward air flow, between the upper housing seat 11A and the inner layer surrounding partition 152.

The principle is as follows: due to the air extraction of the air extraction module 21, the air flow will flow from the air hole 19 of the upper shell seat 11A into the slit between the upper shell seat 11A and the inner surrounding partition 152, and flow down to the lower shell plate 114. At the opening 13, from the opening 13 of the lower shell plate 114, the air flows upward through the air suction channel 12. Therefore, the airflow flowing in the slit between the upper housing 11A and the inner surrounding partition plate 152 is a downdraft, which can prevent oil smoke from escaping to the slit. In this way, the rail set in the slit between the upper housing 11A and the inner surrounding partition 152 can be further prevented from being contaminated with oil fume.

In a modification not shown in the drawings, if the lift air duct module 15 is lifted manually, a handle may be provided, for example, below the trapezoidal air exhaust nozzle 16 or the conical air exhaust nozzle. In particular, the trapezoidal air suction nozzle 16 or the conical air suction nozzle has at least one inclined surface (four inclined surfaces in the drawing, forming a pyramid shape, but not limited to this), and the angle between the vertical line and the vertical line is between 30 degrees and 60 degrees. The preferred angle is 45 degrees, so that both vertical and horizontal oil fume can be extracted. At the same time, since the lift air duct module 15 can be close to the source of oil fume, the effect of taking both vertical oil fume and horizontal oil fume is more obvious. The trapezoidal exhaust nozzle 16 or the conical exhaust nozzle has a plurality of openings or mesh openings. Conveniently, the range hood 1 with a stable lifting air duct module of the present invention may further include an oil collecting groove 17, which is installed under the trapezoidal air exhaust nozzle 16 or the conical air exhaust nozzle, so as to receive the self-extracting air duct 12 or the lifting air duct module. Set of 15 dripping grease.

Optionally, the range hood 1 with a stable lift air duct module of the present invention may further include a range hood detector 27 connected to the control module 14 . The soot detector 27 is configured to detect the concentration of soot. The control module 14 is configured to automatically control the descending distance of the lift air duct module 15 according to the detection result of the oil fume detector 27 . Specifically, when the oil fume concentration is high, the lift air duct module 15 is lowered; when the oil fume concentration is low, the lift air duct module 15 is raised, or, further, the descending distance of the lift air duct module 15 can be proportional to in the concentration of soot. In addition, optionally, the descending distance of the lift air duct module 15 may be inversely proportional to the rotational speed of the air extraction module 21, because the descending of the lift air duct module 15 can improve the oil extraction efficiency.

Here, it is worth noting that there is a difference between "oil pumping performance" and "air extraction performance": the ventilation performance is mainly related to the rotation speed of the ventilation module 21, and when the ventilation module 21 is at the same rotation speed, compared with the traditional ventilation Range hood, better pumping performance. Specifically, the lifting air duct module of this creation can be close to the source of oil fume, and indeed extract the air containing oil fume, instead of extracting the air without oil fume. Traditional range hoods usually draw a lot of fume-free air, resulting in wasted power consumption.

Although the present invention has been described in terms of various embodiments, it should be understood that many other possible modifications and changes can be made without departing from the spirit of the present invention and what is claimed in the scope of the patent application.

1: Range hood with stable lift air duct module

11A: Upper shell seat

11B: Lower shell seat

113: Upper shell plate

114: Lower shell plate

12: Air extraction duct

15: Lifting air duct module

151: Outer Surrounding Partition

152: Inner Surrounding Partition

18: Fume exhaust pipe

19: Stomata

30: Motor

31: Female slide rail of slide rail group

32: Male slide rail of slide rail group

33: The female component of the lifting set

34: Male component of lifting kit

35: Female component fixings

36: Male component holder

Claims (19)

A range hood with a stable lifting air duct module, comprising: an upper shell seat (11A); a lower shell seat (11B), comprising: a front shell plate (112); an upper shell plate (113), the The upper shell plate (113) is connected to the upper shell seat (11A); an air suction channel (12) extends from the interior of the lower shell seat (11B) to the interior of the upper shell seat (11A); and the lower shell plate (114), The lower shell plate (114) is formed with an opening (13) in a central area (114C), and the opening (13) is communicated with the air suction channel (12); a control module (14) is arranged on the lower shell seat (114C). 11B); and a lift air duct module (15), which is arranged in the air extraction duct (12) and configured to partially enter and exit the air extraction duct (12) by way of automatic or manual lifting. The range hood with a stable lift air duct module according to claim 1, wherein the lift air duct module (15) comprises an outer layer surrounding partition plate (151) and an inner layer surrounding partition plate (152), The outer surrounding partition (151) is located between the upper housing seat (11A) or the lower housing (11B) and the inner surrounding partition (152). The range hood with a stable lift air duct module according to claim 2, wherein the inner layer surrounding the partition plate (152) of the lift air duct module (15) is configured to be fixed. The range hood with a stable lift air duct module according to claim 2, wherein the lift air duct module (15) is configured such that the outer surrounding partition (151) is relative to the inner surrounding partition ( 152) move along a vertical direction (Z). The range hood with a stable lift air duct module according to claim 4, wherein the lift air duct module (15) comprises at least one slide rail group (31, 32), which is arranged on the outer surrounding partition (15). 151) and the inner surrounding partition (152). The range hood with a stable lift air duct module according to claim 5, wherein the at least one slide rail group (31, 32) comprises a female slide rail (31) and a male slide rail (32), the The length of the female slide rail (31) is greater than the length of the male slide rail (32). The range hood with a stable lift air duct module according to claim 4, wherein the lift air duct module (15) comprises two slide rail sets (31, 32), which are respectively located on the outer surrounding partition (151) ) opposite sides. The range hood with a stable lift air duct module according to claim 4, wherein the lift air duct module (15) comprises at least one slide rail group (31, 32), which is arranged on the upper housing seat (11A) ) or between the lower shell seat (11B) and the outer layer surrounding partition (151). The range hood with a stable lift air duct module according to claim 4, wherein the lift air duct module (15) comprises a lift set (33, 34) configured to drive the outer surrounding partition (15). 151) is moved relative to the inner layer around the baffle (152). The range hood with a stable lift air duct module according to claim 9, wherein the lift sets (33, 34) are fixed at the center of the opening (13). The range hood with a stable lift air duct module according to claim 10, wherein the lift set (33, 34) comprises a female element (33) fixed on the inner surrounding partition (152) or One of the outer surrounding partitions (151), and a male element (34), fixed to the inner surrounding partition (152) or the other of the outer surrounding partitions (151); the female component (33) and the male element (34) are fitted or matched with each other. The range hood with a stable lift air duct module as claimed in claim 11, wherein the female element (33) is fixed to the inner surrounding partition (152) or One of the outer surrounding partitions (151), and the male element (34) is fixed to the inner surrounding partition (152) or the outer surrounding partition (151) via a male component fixing member (36) ) or the other. The range hood with a stable lifting air duct module according to claim 11, wherein the male element (34) is a screw, a gear, a rope, or a belt; the female element (33) is a screw sleeve, a rack, Rope loops, belt loops. The range hood with a stable lift air duct module according to claim 11, wherein the male element (34) comprises a male element body (340) and a male element guard (341), the male element guard (341) wraps the male element body (340). The range hood with a stable lift air duct module as claimed in claim 12, wherein the lift air duct module (15) includes a motor (30) configured to drive the male element (34) to make the female The element (33) moves relative to the male element (34), thereby driving the outer layer surrounding partition plate (151) to move relative to the inner layer surrounding partition plate (152). The range hood with a stable elevating air duct module according to claim 15, wherein the motor (30) is arranged on the female component fixing member (35). The range hood with a stable lift air duct module according to claim 2, wherein the length (L1) of the outer layer surrounding the partition plate (151) of the lift air duct module (15) is less than or equal to the upper shell The length (L3) of the seat (11A) plus the lower shell seat (11B); the length (L2) of the inner surrounding partition (152) is less than or equal to the upper shell seat (11A) plus the lower shell seat ( 11B) length (L3), And the length (L1) of the outer layer surrounding partition plate (151) plus the length (L2) of the inner layer surrounding partition plate (152) is greater than the length (L2) of the upper shell seat (11A) plus the lower shell seat (11B) ( L3). The range hood with a stable elevating air duct module according to claim 5, further comprising an air extraction module (21), which is suitable for extracting oil fume from the air extraction duct (12). The range hood with a stable lifting air duct module as claimed in claim 18, wherein at least one air hole (19) is formed on the upper housing seat (11A), so that the upper housing seat (11A) and the inner There is a downdraft between the layers surrounding baffles (152).

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