CN113803755B

CN113803755B - Fume exhaust fan

Info

Publication number: CN113803755B
Application number: CN202010544111.4A
Authority: CN
Inventors: 谭柏豪; 马世涛; 王春旭; 何新奎; 蒋济武
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2023-08-29
Anticipated expiration: 2040-06-15
Also published as: CN113803755A

Abstract

The invention discloses a range hood. The range hood comprises a flow guiding piece, a condensing piece and a driving assembly. The guide piece is provided with an air inlet channel and an air inlet, and the air inlet channel is communicated with the air inlet. The condensing piece can be movably connected in the air inlet channel. The condensation member is capable of being positioned in a first position and a second position and is capable of being switched back and forth between the first position and the second position. In the first position, the condensing element is folded at the side wall of the air inlet channel. In the second position, the condensing element separates the air intake passage into at least two air flow passages. The driving component is connected with the condensing piece and used for driving the condensing piece to move so that the condensing piece can be switched back and forth between a first position and a second position. Above-mentioned range hood, drive assembly can drive the condensate piece and switch back and forth in first position and second position, can realize many air current runners like this for oil smoke or air current get into range hood's inside sooner, prevent that the oil smoke from spilling over, promote the oil smoke effect.

Description

Fume exhaust fan

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood.

Background

In the related art, a condensing plate is generally arranged below an air inlet of a guide plate, and the surface area of the condensing plate is larger than that of the air inlet, so that oil and water which drop downwards from the inside of the range hood can be effectively blocked. In addition, the area of the condensing plate is large in the smoking process, so that a negative pressure area at the bottom of the range hood is expanded, the smoking capacity around the range hood is enhanced, and the oil smoke is prevented from overflowing. In addition, in the cooking process, the oil fume is firstly contacted with the condensing plate in the rising process, so that the oil fume is more easily intercepted by the filter screen after being condensed by the condensing plate.

The condensing plate is typically fixed to the air intake side of the air intake such that the channel formed between the condensing plate and the baffle is of a fixed width. However, the fixed width channel cannot adapt to the change of the oil smoke size, and may affect the oil smoke absorbing effect.

Disclosure of Invention

The embodiment of the invention provides a range hood.

The range hood of the embodiment of the invention comprises:

the air inlet channel is communicated with the air inlet;

the condensing piece can be movably connected in the air inlet channel, can be positioned at a first position and a second position, can be switched back and forth between the first position and the second position, and is folded on the side wall of the air inlet channel under the condition of the first position, and is separated into at least two airflow channels under the condition of the second position; and

the driving assembly is connected with the condensing piece and used for driving the condensing piece to move so that the condensing piece can be switched back and forth between the first position and the second position.

Above-mentioned range hood, drive assembly can drive the condensate piece and switch back and forth in first position and second position, can realize many air current runners like this for oil smoke or air current get into range hood's inside sooner, prevent that the oil smoke from spilling over, promote the oil smoke effect.

In some embodiments, the number of the air inlet channels is two, each air inlet channel is internally provided with a condensation piece, an air guide piece is arranged between the two air inlet channels, the condensation piece can be movably connected with the air guide piece, the condensation piece is folded on the side wall of the air guide piece under the condition of the first position, one air flow channel is formed between the condensation piece and the air guide piece under the condition of the second position, and at least one air flow channel is formed between the condensation piece and the air guide piece.

Thus, the oil smoke in different areas can be sucked into the range hood.

In some embodiments, the drive assembly is configured to provide a combined rotational and translational movement of the condensing member during actuation of the condensing member.

Therefore, the condensing piece can be switched back and forth between the first position and the second position, and the switching of the multiple airflow channels is realized.

In certain embodiments, the combined rotational and translational movement of the condensing member comprises one of:

a compound motion for enabling the condensation piece to simultaneously rotate and translate;

the condensing piece rotates firstly and then translates;

The condensation member is translated and then rotated.

In this manner, the drive assembly may drive the condensing member back and forth between the first position and the second position in a variety of ways.

In some embodiments, the number of condensation members is two, the drive assembly includes one drive member and a transmission assembly including a first transmission mechanism connecting the drive member and one of the condensation members and a second transmission mechanism connecting the first transmission mechanism and the other condensation member.

Thus, one driving piece can drive two condensing pieces at the same time, and the two condensing pieces can operate synchronously.

In certain embodiments, each of the first and second transmissions comprises:

the swing arm comprises a head and an arm part connected to one side of the head;

a rotating lever; and

the turning rod is arranged in a way of being far away from the direction of the head, one end of the turning rod and one end of the turning rod are sequentially and respectively connected with the arm part in a rotating way, the other end of the turning rod is rotationally connected with the condensing piece, a distance is reserved between a first connecting part formed by connecting the turning rod with the condensing piece and a second connecting part formed by connecting the turning rod with the condensing piece, and the head part of the first transmission mechanism is connected with the head parts of the driving piece and the second transmission mechanism.

Therefore, the rotary rod is rotationally connected with the arm part and the condensing piece, the condensing piece can simultaneously rotate and translate, and the two condensing pieces can basically synchronously move.

In some embodiments, the head of the first transmission is connected to the head of the second transmission by way of engagement.

Therefore, the first transmission mechanism and the second transmission mechanism are connected more tightly, and the head of the first transmission mechanism and the head of the second transmission mechanism are prevented from sliding relatively.

In some embodiments, the range hood includes a guide assembly including a guide rail and a connector slidably coupled to the guide rail, one of the guide rail and the connector coupled to a side wall of the air intake passage, and the other of the guide rail and the connector coupled to the condensing member.

In this way, the condensation member is more stable during the translational movement.

In some embodiments, the number of condensation members is two, the drive assembly includes two drive members and a transmission assembly including a first transmission mechanism connecting one of the drive members and one of the condensation members and a second transmission mechanism connecting the other of the drive members and the other of the condensation members.

Thus, one driving member drives one condensing member, and the two condensing members can be operated independently.

In certain embodiments, each of the first and second transmissions comprises:

a rotating lever; and

a turning rod, one end of the turning rod and one end of the turning rod are respectively and rotatably connected with one end of the arm part along the direction far away from the head part, the other end of the turning rod is rotatably connected with the condensing piece,

the first connecting part formed by connecting the rotating rod with the condensing piece and the second connecting part formed by connecting the turning rod with the condensing piece are separated by a distance, the head part of the first transmission mechanism is connected with one driving piece, and the head part of the second transmission mechanism is connected with the other driving piece.

Thus, a compound motion is realized in which one driving member drives one condensing member to simultaneously rotate and translate.

In some embodiments, the range hood comprises a controller and a smoke sensor, the controller is connected with the smoke sensor and the driving assembly, the smoke sensor is used for detecting the size of smoke in the air inlet channel, the controller is used for controlling the driving assembly to drive the condensation piece to be located at the first position or the second position according to the size of the smoke, or the controller is used for controlling the driving assembly to drive the condensation piece to be located at the first position or the second position according to gear information of the range hood.

Therefore, the range hood can automatically control or control the condensing part to be positioned at the first position or the second position according to the gear information so as to meet the requirements of the pumping and exhausting of the oil smoke with different sizes.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a perspective view of a condensing unit of a range hood according to an embodiment of the present invention in a first position;

fig. 2 is a perspective view of a condensing unit of the range hood according to an embodiment of the present invention in a second position;

fig. 3 is a partially exploded view of a range hood according to an embodiment of the present invention;

fig. 4 is a perspective view of the driving assembly and the condensing unit when the condensing unit of the range hood according to the embodiment of the present invention is in the first position;

fig. 5 is a perspective view of the driving assembly and the condensing unit when the condensing unit of the range hood according to the embodiment of the present invention is in the second position;

fig. 6 is a plan view of a condensing unit of a range hood according to an embodiment of the present invention in a second position;

FIG. 7 is an enlarged schematic view of the VI part of FIG. 3;

fig. 8 is a partial construction view of a range hood according to an embodiment of the present invention;

fig. 9 is another partial construction view of a range hood according to an embodiment of the present invention;

fig. 10 is a view showing a structure of still another part of the range hood according to the embodiment of the present invention;

fig. 11 is a perspective view of a condensing unit of a range hood according to an embodiment of the present invention;

fig. 12 is a schematic block diagram of a range hood according to an embodiment of the present invention.

Description of main reference numerals:

the range hood 100, the deflector 10, the air intake duct 12, the airflow passage 121, the air intake 14, the filter screen 15, the condensation member 20, the first protrusion 221, the second protrusion 222, the third protrusion 223, the sixth through hole 24, the seventh through hole 26, the eighth through hole 28, the first connection 21, the second connection 23, the driving unit 30, the driving unit 32, the motor 322, the output shaft 3222, the driving unit 34, the first transmission mechanism 342, the swing arm 3422, the head 34222, the arm 34224, the third through hole 34226, the fourth through hole 34228, the fifth through hole 34221, the rotation lever 3424, the turnover lever 3426, the first connection hole 3428, the second connection hole 3421, the third connection hole 3423, the fourth connection hole 3425, the second transmission mechanism 344, the body 40, the wind deflector 50, the fixing unit 52, the fixing plate 522, the first through hole 524, the second through hole 526, the guide unit 60, the guide rail 62, the connection 64, the fifth connection hole 66, the controller 70, and the range hood 80.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the invention. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 3, a range hood 100 according to an embodiment of the present invention includes a guide member 10, a condensing member 20, and a driving assembly 30. The flow guiding piece 10 is provided with an air inlet channel 12 and an air inlet 14, and the air inlet channel 12 is communicated with the air inlet 14. The condensation member 20 is movably connected within the air intake passage 12. The condensation member 20 is capable of being located in a first position and a second position and is capable of being switched back and forth between the first position and the second position. In the first position (as shown in fig. 1), the condensation member 20 is gathered against the side wall of the air intake channel 12. In the second position (as shown in fig. 2), the condensation member 20 separates the air intake passage 12 into at least two airflow channels 121. The driving assembly 30 is connected to the condensing member 20 and is used for driving the condensing member 20 to move so as to make the condensing member 20 switch back and forth between a first position and a second position.

The above-mentioned range hood 100, the driving assembly 30 can drive the condensation member 20 to switch back and forth between the first position and the second position, so that the multi-airflow channel 121 can be realized, and the range hood is used for enabling the oil smoke or the airflow to enter the interior of the range hood 100 more quickly, preventing the oil smoke from overflowing, and improving the oil smoke absorbing effect.

It will be appreciated that the cooking fume is generated during the cooking process, and under the condition that the range hood 100 is working normally, a negative pressure area exists at the air inlet channel 12, and the rising fume flows through the air inlet channel 12 under the action of the negative pressure area to enter the interior of the range hood 100, and is discharged outdoors. During the cooking processes such as stewing, boiling and the like, the generated oil smoke is small, and the condensation piece 20 can be positioned at the first position, so that the discharge of the small oil smoke is realized; during cooking such as frying, etc., the amount of generated oil smoke is large, and the condensation member 20 can be positioned at the second position, thereby realizing the discharge of a large amount of oil smoke. In addition, the oil smoke is easily affected by the outside in the ascending process, for example, wind blown in by a window, the oil smoke can be scattered or overflowed from the air inlet channel 12 in the ascending process due to the situation that people walk in front of the range hood 100, so that part of the oil smoke can not be pumped by the range hood 100, the position of the negative pressure area is moved downwards and the range of the negative pressure area is enlarged under the condition that the first position of the condensation piece 20 is changed to the second position, the time period required for the oil smoke to ascend to the negative pressure area is shortened, the oil smoke can be pumped by the range hood 100 more quickly, and therefore the influence of the outside environment on the oil smoke absorbing effect is reduced, and the performance of the range hood 100 is improved.

Specifically, the range hood 100 further includes a body 40. The deflector 10, the condenser 20 and the driving assembly 30 are provided at the bottom of the body 40. The air inlet channel 12 adopts a ladder-shaped cavity structure with a downward opening. In the illustrated embodiment, the interior of the baffle 10 is separated into two air inlet passages 12 by an air guide 50. The ladder-shaped cavity comprises an upper bottom surface, four waist surfaces and other five cavity surfaces, and the longitudinal section of the air inlet channel 12 is trapezoidal. The air inlet 14 is disposed on the upper bottom surface of the air inlet channel 12, and in the embodiment shown in fig. 1, the air inlet 14 is further provided with a filter screen 15. The filter screen 15 can filter the oil smoke, and when the oil smoke passes through the filter screen 15 and enters the body 40, a part of the oil smoke is liquefied into oil drops to be adsorbed on the filter screen 15, so that a large amount of oil smoke is prevented from entering the body 40, and the influence of oil dirt accumulation in the body 40 on the working performance of the range hood 100 is reduced. The filter screen 15 can also effectively prevent arms, hair, etc. from entering the interior of the body 40, thereby improving the safety of the range hood 100 during use. In the process of rising of the oil smoke, the air inlet channel 12 always wraps the oil smoke, so that the oil smoke is prevented from overflowing, and the indoor oil smoke is effectively sucked into the range hood 100 and discharged outdoors. It will be appreciated that in other embodiments, the number of air intake passages 12 may be one or more than two, and is not particularly limited herein.

A fan assembly (not shown) is arranged in the body 40, the fan assembly comprises a volute and a fan arranged in the volute, and when the fan is started, air flow enters from an air inlet of the volute and is discharged from an air outlet of the volute. Therefore, in the case of the fan being started, a negative pressure is formed at the air inlet of the scroll case, and thus a negative pressure region is formed in the air inlet passage 12.

The condensing member 20 has a plate-type structure, and the driving assembly 30 drives the condensing member 20 to switch back and forth between the first position and the second position, and maintains a state of being located at the first position or the second position. In the case of the first position, the condensation member 20 is folded on the side wall of the air inlet channel 12, and the condensation member 20 has less influence on the position of the negative pressure area of the air inlet channel 12; in the case of the second position, the condensation member 20 is opened at a certain angle with respect to the side wall of the air intake channel 12, as in the embodiment shown in fig. 2, the condensation member 20 is substantially parallel to the horizontal plane after being opened at a certain angle with respect to the air intake channel 12, and the condensation member 20 separates the air intake channel 12 into at least two airflow channels 121, after the rising oil smoke encounters the condensation member 20, a part of the oil smoke is liquefied into oil droplets and adheres to the surface of the condensation member 20, and as the negative pressure area moves down and expands outward, the time for the other part of the oil smoke to rise from the pot to the negative pressure area becomes shorter, and the oil smoke rapidly enters the interior of the range hood 100 through the at least two airflow channels 121 and is rapidly discharged. It will be appreciated that in other embodiments, the second location may also be other locations between the location of the condensing member 20 shown in fig. 1 and the location of the condensing member 20 shown in fig. 2, without limitation. The number of second positions can be calibrated according to specific situations.

In the embodiment shown in fig. 1-3, the number of air inlets 14 is one, and the air inlets are opened on the upper bottom surface of the air inlet channel 12, and correspondingly communicate with two air inlet channels 12. In other embodiments, the number of air inlets 14 may include two or more, and each air inlet 14 may be disposed on one or more of the upper bottom surface and the four waist surfaces of the air inlet channel 12. The number and the arrangement positions of the air inlets 14 are not limited, and the air inlet quantity of the air inlets 14 can meet the requirement of sucking and discharging clean oil smoke. It should be noted that in other embodiments, the flow guiding member may be basically flat, and an air inlet channel basically in a cuboid shape is formed in the flow guiding member, the condensation member may be switched back and forth between the first position and the second position, so as to change the number of air flow channels of the air inlet channel, thereby realizing multiple air flow channels, being used for enabling oil smoke or air flow to enter the interior of the traditional range hood more quickly, preventing the oil smoke from overflowing, and improving the oil smoke absorbing effect.

Referring to fig. 1 and 2, in some embodiments, the number of air intake passages 12 is two, and a condensation member 20 is disposed in each air intake passage 12. An air guide member 50 is arranged between the two air inlet channels 12, and the condensing member 20 can be movably connected with the air guide member 50. In the first position, the condensing member 20 is folded against the sidewall of the air guide 50. In the second position, an airflow channel 121 is formed between the condensation member 20 and the air guide member 50, and at least one airflow channel 121 is formed between the condensation member 20 and the air guide member 10.

In this way, the soot in different areas can be sucked into the range hood 100. It will be appreciated that each inlet channel 12 may correspond to a cooking location, for example the cooking hob is a gas hob comprising two burners, each inlet channel 12 corresponding to one burner. The fume easily flies or overflows the air inlet channel 12 in the ascending process, namely, the fume is positioned at different positions of the bottom of the body 40, and as the bottom of the body 40 is provided with two air inlet channels 12, each air inlet channel 12 is divided into at least two airflow channels 121 when the condensing piece 20 is positioned at the second position, and the fume at any cooking position can be sucked into the fume exhauster 100 through the corresponding airflow channels 121 by the fume exhauster 100, so that the fume extraction and discharge of different areas can be realized.

Specifically, the air guide 50 is disposed at a middle portion of the bottom of the air guide 10, the air guide 50 divides the interior of the air guide 10 into two air inlet channels 12, the two air inlet channels 12 are substantially the same in size, the two air inlet channels 12 are respectively ladder-shaped cavities with downward openings, and the two cavities are separated by the air guide 50, so that the interior of the air guide 10 is divided into two independent air inlet channels 12. The open ends of the two air inlet channels 12 are respectively aligned with the two furnace heads on the kitchen table surface, namely aligned with the center of the smoke source, so that the mutual interference of the smoke between the two stations is prevented. When the condensation member 20 is located at the first position, each air inlet channel 12 is an independent airflow channel 121, and the rising oil smoke passes through the two air inlet channels 12, passes through the air inlet 14 and enters the interior of the range hood 100 under the guidance of the flow guiding member 10. When the condensation member 20 is located at the second position, each air inlet channel 12 is divided into at least two airflow channels 121 by the condensation member 20, and the airflow channels 121 formed between the condensation member 20 and the air guide member 50 are smaller than the airflow channels 121 formed between the condensation member 20 and the air guide member 10, that is, the air inlet areas of the airflow channels 121 on two sides below the air guide member 10 are larger than those of the airflow channels 121 in the middle, that is, the negative pressure area is larger, so that the oil smoke overflowing the air inlet channels 12 can be conveniently sucked into the kitchen ventilator 100 in time.

Since the air guiding member 50 divides the space inside the air guiding member 10 into two air inlet channels 12, one side of the air guiding member 50 may be used as a sidewall of the air inlet channel 12, for example, in the embodiment shown in fig. 1, for the left air inlet channel 12, the left sidewall of the air guiding member 50 may be the right sidewall of the left air inlet channel 12, and when the condensation member 20 is located at the first position, the condensation member is folded on the left sidewall of the air guiding member 50, that is, the right sidewall of the left air inlet channel 12. For the right air intake duct 12, the right side wall of the air guiding member 50 may be the left side wall of the right air intake duct 12, and when the condensation member 20 is located at the first position, the condensation member is folded on the right side wall of the air guiding member 50, i.e. the left side wall of the right air intake duct 12.

Referring to fig. 4 and 5, in some embodiments, the drive assembly 30 is configured to provide a combined rotational and translational movement of the condensing member 20 during actuation of the condensing member 20.

In this way, the condensing element 20 can be switched back and forth between the first position and the second position, and the switching of the multiple airflow channels 121 is realized. Specifically, in the first position, the condensation member 20 is inclined to form an angle with the horizontal surface and is folded on the side wall of the air inlet channel 12, each air inlet channel 12 is an independent airflow channel 121, and in the second position, the condensation member 20 is opened at an angle relative to the side wall of the air inlet channel 12 and is spaced apart from the side wall of the air inlet channel 12 by a certain distance, and each air inlet channel 12 is divided into at least two airflow channels 121. Rotation can change the inclination angle of the condensing member 20, so that the condensing member 20 can adjust the position of the negative pressure region and form at least two air flow channels 121. Translation may change the distance between the condensing element 20 and the sidewall of the air intake channel 12 such that another airflow channel 121 is formed between the condensing element 20 and the sidewall of the air intake channel 12.

In the embodiment shown in fig. 1 and 2, the side wall of the air guiding member 50 may be used as the side wall of the air inlet channel 12, and the condensation member 20 rotates during the movement from the first position to the second position, the condensation member 20 is opened at a certain angle relative to the side wall of the air guiding member 50, the condensation member 20 translates, and the condensation member 20 moves at a certain distance relative to the side wall of the air guiding member 50.

Referring to fig. 2 and 6, in the case that the condensation member 20 is located at the second position, the condensation member 20 in the air inlet channel 12 divides one air inlet channel 12 into 4 airflow channels 121, so that the oil smoke around the lower portion of the condensation member 20 can be quickly sucked away through the 4 airflow channels 121 in the case that the condensation member 20 is located at the second position, and the oil smoke absorbing effect is improved.

Specifically, in certain embodiments, the compound movement of the condensation member 20, including one of the following: a combined movement of rotation and translation of the condensation member 20 simultaneously; the condensation member 20 is rotated and then translated; the condensing member 20 is translated and then rotated. As such, the drive assembly 30 may drive the condensing member 20 back and forth between the first position and the second position in a variety of ways.

In other embodiments, the driving assembly may cause the condensation member to perform one of a rotational or translational motion during the motion of the condensation member to effect a back and forth switching of the condensation member between the first position and the second position, i.e., the condensation member may complete the back and forth switching between the first position and the second position by rotation, or the condensation member may complete the back and forth switching between the first position and the second position by translation.

The embodiment of the present invention will be described in detail taking as an example a compound motion that allows the condensation member 20 to simultaneously rotate and translate.

Specifically, referring to fig. 4 and 5, the number of condensation members 20 is two, and the driving assembly 30 includes one driving member 32 and a transmission assembly 34. The transmission assembly 34 includes a first transmission 342 and a second transmission 344. The first gear train 342 connects the driving member 32 with one of the condensation members 20, and the second gear train 344 connects the first gear train 342 with the other condensation member 20.

Thus, one driving member 32 can simultaneously drive two condensing members 20, and the two condensing members 20 can operate synchronously. Specifically, the drive assembly 30 is partially disposed within the air guide 50. The air guide 50 is internally provided with a fixing member 52, and the fixing member 52 fixes the driving member 32 at a rear position of the air guide 50. The drive 32 includes a motor 322. Referring to fig. 7, the fixing member 52 includes a fixing plate 522, a first through hole 524 and a second through hole 526, the first through hole 524 and the second through hole 526 are formed in the fixing plate 522, an output shaft 3222 of the motor 322 passes through the first through hole 524 to be connected with the first transmission mechanism 342, the second transmission mechanism 344 is rotatably connected with the fixing member 52 through the second through hole 526, and the second transmission mechanism 344 is connected with the first transmission mechanism 342. The condensing element 20 is rotatably connected to a drive assembly 34. When the motor 322 is operated, the first transmission mechanism 342 rotates synchronously with the output shaft 3222 of the motor 322, and the second transmission mechanism 344 rotates synchronously with the first transmission mechanism 342, i.e. the first transmission mechanism 342 and the second transmission mechanism 344 rotate substantially synchronously with the output shaft 3222, so that the synchronous operation of the two condensation members 20 is achieved. In other embodiments, the fixing member 52 may be provided at a front side position, a middle position, or other positions located at the middle of the front and rear sides of the wind guide 50. Other driving members, such as a relay, can be adopted as the driving member, and the relay can convert translational motion into rotation through a link mechanism, so that the driving effect similar to that of an output shaft of a motor can be realized.

Referring to fig. 8-11, in some embodiments, each of the first and second transmission mechanisms 342, 344 includes a swing arm 3422, a swing lever 3424, and a toggle lever 3426. The swing arm 3422 includes a head 34222 and an arm 34224 connected to one side of the head 34222. One end of the turning lever 3424 and one end of the flipping lever 3426 are sequentially rotatably connected to the arm portion 34224 in a direction away from the head portion 34222, the other end of the turning lever 3424 is rotatably connected to the condensation member 20, and the other end of the flipping lever 3426 is rotatably connected to the condensation member 20. The first connection 21 of the rotating rod 3424 to the condensing unit 20 and the second connection 23 of the flipping rod 3426 to the condensing unit 20 are spaced apart from each other. The head 34222 of the first transmission 342 connects the drive member 32 with the head 34222 of the second transmission 344.

In this way, the condensation members 20 are able to perform both rotational and translational movements simultaneously, and the two condensation members 20 can move substantially synchronously. It will be appreciated that, since the swing arm 3422 connects the rotating rod 3424 and the turning rod 3426, the condensing unit 20 turns upward while the two sides of the air guide 50 are closed, and the condensing unit 20 opens downward while the two sides of the air guide 50 are opened, so that the air flow passage 121 under the air guide 10 can be changed according to the position of the condensing unit 20.

Specifically, the swing arm 3422 is provided with a third through hole 34226, a fourth through hole 34228, and a fifth through hole 34221. The third through hole 34226 is located at the head 34222 of the swing arm 3422, and the output shaft 3222 of the motor 322 is provided with the first through hole 524 and the third through hole 34226 for the first transmission mechanism 342, so that the first transmission mechanism 342 rotates synchronously with the motor 322. For the second transmission mechanism 344, the third through hole 34226 and the second through hole 526 can be rotatably connected through a rotating shaft (not shown), so that the swing arm 3422 of the second transmission mechanism 344 is rotatably connected to the fixing member 52.

The fourth through hole 34228 and the fifth through hole 34221 are located at the arm portion 34224 of the swing arm 3422, wherein the fourth through hole 34228 is close to the head portion 34222 of the swing arm 3422, and the fifth through hole 34221 is far from the head portion 34222 of the swing arm 3422. Referring to fig. 11, a side surface of the condensation member 20 facing the transmission mechanism is provided with a first protrusion 221 and a second protrusion 222 which are spaced apart. The first protrusion 221 is provided with a sixth through hole 24, the second protrusion 222 is provided with a seventh through hole 26, wherein the first protrusion 221 is close to the edge of the condensation member 20, and the second protrusion 222 is close to the other edge of the condensation member 20.

Referring to fig. 8, a first connection hole 3428 is formed at one end of the rotation rod 3424, and a second connection hole 3421 is formed at the other end. A third connecting hole 3423 is formed at one end of the turning rod 3426, and a fourth connecting hole 3425 is formed at the other end. The first connection hole 3428 is rotatably connected to the fourth through hole 34228 through a rotation shaft, and the second connection hole 3421 is rotatably connected to the sixth through hole 24 through the rotation shaft to form the first connection portion 21. In this way, a rotational connection of the rotating lever 3424 with the arm 34224 and with the condensation member 20 is achieved. It will be appreciated that in other embodiments, one of the arm 34224 and the rotating rod 3424 is provided with a rotating shaft, and the other is provided with a through hole or a connecting hole, and the arm 34224 and the rotating rod 3424 can be rotatably connected with the through hole or the connecting hole through the rotating shaft.

The third connection hole 3423 is rotatably connected to the fifth through hole 34221 through a rotation shaft, and the fourth connection hole 3425 is rotatably connected to the seventh through hole 26 through a rotation shaft to form the second connection part 23. In this way, a rotational connection of the tilting lever 3426 to the arm 34224 and to the condensation element 20 is achieved. It will be appreciated that in other embodiments, one of the arm 34224 and the flipping lever 3426 is provided with a rotating shaft, and the other is provided with a through hole or a connecting hole, and the arm 34224 and the flipping lever 3426 can be rotatably connected with the through hole or the connecting hole through the rotating shaft.

When the motor 322 drives the swing arm 3422 of the first transmission mechanism 342, the rotating rod 3424 pulls the condensation member 20 at the first connection point 21, the turning rod 3426 drives the condensation member 20 to move closer to or away from the wind guide member 50 at the second connection point 23, and the condensation member 20 rotates around the rotating shaft of the first connection point 21 under the driving of the turning rod 3426 due to the fact that the first connection point 21 is at a distance from the second connection point 23.

In addition, since the head 34222 of the first transmission 342 is connected to the head 34222 of the second transmission 344, when the motor 322 drives the swing arm 3422 of the first transmission 342, the swing arm 3422 of the second transmission 344 swings synchronously, thereby achieving substantially synchronous movement of the two condensing units 20.

Referring to fig. 4, in some embodiments, the head 34222 of the first transmission 342 is engaged with the head 34222 of the second transmission 344. In this way, the connection between the first and second transmission mechanisms 342, 344 is tighter, preventing the head 34222 of the first transmission mechanism 342 from sliding relative to the head 34222 of the second transmission mechanism 344. Specifically, the first transmission mechanism 342 and the second transmission mechanism 344 are connected through the head portion 34222 of the swing arm 3422, teeth are arranged on the peripheral surface of the head portion 34222 of the swing arm 3422, and the two swing arms 3422 are meshed through the teeth of the head portion 34222 to realize opposite rotation directions of the two head portions 34222, so that synchronous movement of the two condensation pieces 20 is finally realized.

Referring to fig. 3-5, in some embodiments, the range hood 100 includes a guide assembly 60. The guide assembly 60 includes a guide rail 62 and a connector 64. The connecting member 64 slidably connects the guide rail 62. One of the guide rail 62 and the connecting member 64 is connected to the side wall of the air intake passage 12, and the other of the guide rail 62 and the connecting member 64 is connected to the condensing member 20.

In this way, the condensation member 20 is more stable during the translational movement. Specifically, in the illustrated embodiment, the air guide 50 divides the space inside the guide body into two air inlet passages 12, the side wall of the air guide 50 may be one side wall of the air inlet passage 12, one of the guide rail 62 and the connection member 64 is connected to the side wall of the air guide 50, and the other of the guide rail 62 and the connection member 64 is connected to the condensation member 20. In the embodiment shown in fig. 4 and 5, the guide assembly 60 is partially disposed inside the wind guide 50, the guide rail 62 is connected to the side wall of the wind guide 50, and the connector 64 is connected to the condensing member 20. The connecting piece 64 is in a rod shape, a fifth connecting hole 66 is formed in one end of the connecting piece 64 connected with the condensing piece, and the connecting piece 64 is partially contained in the guide rail 62 and can freely stretch and retract in the guide rail 62. Two third protrusions 223 are arranged on the surface of one side of the condensation piece 20 facing the guide assembly 60 at intervals, the two third protrusions 223 can correspond to one guide assembly 60, each third protrusion 223 is provided with an eighth through hole 28, the eighth through holes 28 of the two third protrusions 223 are coaxially arranged and coaxially arranged with the rotating shaft of the first connecting part 21, one end of the connecting piece 64 is located between the two eighth through holes 28, the eighth through holes 28 are connected with the fifth connecting hole 66 through the rotating shaft, and the condensation piece 20 can turn around the rotating shaft.

In the illustrated embodiment, the number of guide members 60 is two, i.e., each condensing member 20 is rotatably coupled to two guide members 60, and a side surface of the condensing member 20 facing the guide members 60 is provided with four spaced third protrusions 223. The two guide assemblies 60 are spaced apart a distance that makes the condensation more stable in translation. In other embodiments, the connector 64 may connect to a sidewall of the air guide 50, the guide rail 62 may connect to the condensing element 20, and the number of guide assemblies 60 may include one, three, or more than three. In addition, the transmission mechanism may also include a crank-slider structure, which realizes the conversion of the rotation and translation movement modes of the condensation member 20.

In some embodiments, the number of condensation members is two, and the drive assembly includes two drive members and a transmission assembly. The transmission assembly includes a first transmission mechanism and a second transmission mechanism. The first transmission mechanism is connected with one driving piece and one condensing piece, and the second transmission mechanism is connected with the other driving piece and the other condensing piece. Thus, one driving member drives one condensing member, and the two condensing members can be operated independently.

Specifically, the structure of the transmission mechanism of the present embodiment is substantially the same as that of the embodiment in which the one driving member drives the two condensation members to move simultaneously, and is different in that the head of the first transmission mechanism is connected to one driving member, the head of the second transmission mechanism is connected to the other driving member, and the position setting of the driving members is also more flexible. Thus, a compound motion is realized in which one driving member drives one condensing member to simultaneously rotate and translate.

It will be appreciated that in other embodiments, the condensation member may be rotated first and then translated, or the condensation member may be translated first and then rotated.

In particular, in such an embodiment, two drives may be provided, one of which is responsible for the rotation of the condensation member (hereinafter referred to as rotation drive) and the other of which is responsible for the translation of the condensation member (hereinafter referred to as translation drive). The condensing part is driven to rotate to a certain angle by the rotation driving part, then the condensing part is driven to translate for a certain distance by the translation driving part, or the condensing part is driven to translate for a certain distance by the translation driving part, and then the condensing part is driven to rotate to a certain angle by the rotation driving part, so that the rotation and translation movement of condensation are realized. The specific structure can be referred to the above embodiment of the composite motion of simultaneous rotation and translation and can be appropriately modified, and will not be expanded in detail here.

Referring to fig. 12, in some embodiments, a range hood 100 includes a controller 70 and a smoke sensor 80. The controller 70 connects the smoke sensor 80 and the drive assembly 30. The oil smoke sensor 80 is used for detecting the oil smoke in the air inlet channel 12. The controller 70 is used for controlling the driving assembly 30 to drive the condensation member 20 to be located at the first position or the second position according to the oil smoke.

Thus, the range hood 100 can automatically control the condensing member 20 to be located at the first position or the second position to satisfy the different sizes of the cooking fume. Specifically, during cooking, oil fumes are generated, and the oil fumes rise into the air inlet channel 12.

In one embodiment, the soot sensor 80 detects the soot size in the intake passage 12 and compares the soot size to a preset value, and in the event that the soot size is less than the preset value, the soot sensor 80 outputs a first electrical signal to the controller 70 indicating that the soot is small. The controller 70 controls the driving assembly 30 to drive the condensation piece 20 to be located at the first position according to the first electric signal, the condensation piece 20 is folded on the side wall of the air inlet channel 12, and the air inlet channel 12 is an independent airflow channel 121, so that the pumping and exhausting of small oil smoke are realized. When the oil smoke is greater than or equal to the preset value, the oil smoke sensor 80 outputs a second electric signal to the controller 70, the second electric signal is used for indicating that the oil smoke is greater, the controller 70 controls the driving assembly 30 to drive the condensation member 20 to be located at the second position according to the second electric signal, the condensation member 20 separates the air inlet channel 12 into at least two airflow channels 121, the position of the negative pressure area moves downwards, the range of the negative pressure area is enlarged, the oil smoke can enter the interior of the range hood 100 more quickly, the oil smoke is prevented from overflowing, and accordingly the large oil smoke is pumped and discharged.

In another embodiment, the oil smoke sensor 80 detects the oil smoke in the air intake channel 12, outputs the oil smoke to the controller 70, the controller 70 compares the oil smoke with a preset value, and when the oil smoke is smaller than the preset value, the controller 70 controls the driving component 30 to drive the condensation member 20 to be located at the first position, the condensation member 20 is folded on the side wall of the air intake channel 12, and the air intake channel 12 is an independent airflow channel 121, so that the small oil smoke is pumped and discharged. Under the condition that the oil smoke is larger than or equal to a preset value, the controller 70 controls the driving assembly 30 to drive the condensation piece 20 to be located at the second position, the condensation piece 20 separates the air inlet channel 12 into at least two airflow channels 121, the position of the negative pressure area moves downwards, the range of the negative pressure area is enlarged, the oil smoke can enter the interior of the range hood 100 more quickly, the oil smoke is prevented from overflowing, and accordingly large oil smoke is pumped and discharged.

It should be noted that two or more preset values may be provided, which may be divided into a plurality of control intervals, each control interval corresponding to the second position of one condensation member 20. Whether the condensation 20 is located at the first position or at which second position is determined according to the amount of soot detected by the soot sensor 80. The correspondence between the oil smoke size and the first position and the second position may be calibrated by experiments and stored in the range hood 100.

The oil smoke sensor 80 may be mounted on the inner wall of the air intake duct 12, may be mounted in a flue inside the main body 40, may be mounted in a duct connecting the common flue and the main body 40, may be mounted on a wall or the like, and may be capable of detecting the oil smoke in any case, and is not particularly limited herein. The soot sensor 80 includes, but is not limited to, a photosensor including a light emitting member and a light receiving member, and an organic molecule sensor (VOC sensor) including, in some embodiments, a 180 degree opposite to the light receiving member disposed on an inner wall of a flue or duct, and soot passing through a space between the light emitting member and the light receiving member, and the intensity of an optical signal emitted from the light receiving member received by the light emitting member is inversely related to the size of the soot due to the shielding effect of soot particles. In some embodiments, the light emitting part and the light receiving part are arranged on the inner wall of the flue or the air duct at an acute angle, and when the oil smoke passes through the flue or the air duct or the channel, the intensity of the light signal emitted by the light receiving part received by the light emitting part is positively related to the size of the oil smoke due to the reflection effect of oil smoke particles. The VOC sensor can detect the concentration of organic molecules in the oil smoke, and can calibrate the relation between the concentration of the organic molecules and the size of the oil smoke in advance, so that the size of the oil smoke can be detected.

The soot sensor 80 may be provided as one, two or more, in which case the soot size may be an average of the soot sizes detected by the two or more soot sensors 80, or a calculated value may be assigned according to different weights.

In certain embodiments, the range hood 100 includes a controller 70. The controller 70 is connected to the drive assembly 30. The controller 70 is used for controlling the driving assembly 30 to drive the condensation 20 to be located at the first position or the second position according to the gear information of the range hood 100.

Thus, according to the gear information set by the user, the range hood 100 can control the condensation member 20 to be located at the first position or the second position, and assist in exhausting the oil smoke with different sizes. Specifically, the gear information may correspond to rotation of the fan, when the user selects the range hood 100 to be in the low gear, the rotation speed of the fan is smaller, the air intake of the range hood 100 in unit time is smaller, and the controller 70 controls the driving assembly 30 to drive the condensation member 20 to be located in the first position, so as to assist in exhausting of small oil smoke; when the user selects the range hood 100 to be in the high gear, the rotation speed of the fan is larger, the air inlet amount of the range hood 100 in unit time is larger, and the controller 70 controls the driving assembly 30 to drive the condensation member 20 to be located at the second position, so that the large-oil-smoke amount pumping and exhausting are assisted. The user may select a gear through keys (including physical keys and virtual keys) on the panel of the range hood 100 or on a terminal in communication with the range hood 100.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, comprising:

the air inlet channel is communicated with the air inlet;

the driving assembly is connected with the condensing piece and used for driving the condensing piece to move so as to enable the condensing piece to be switched back and forth between the first position and the second position;

the number of the air inlet channels is two, the condensation pieces are arranged in each air inlet channel, an air guide piece is arranged between the two air inlet channels, the condensation pieces can be movably connected with the air guide pieces, the condensation pieces are folded on the side walls of the air guide pieces under the condition of the first position, an air flow channel is formed between the condensation pieces and the air guide pieces under the condition of the second position, and at least one air flow channel is formed between the condensation pieces and the air guide pieces;

The driving component is used for enabling the condensing piece to conduct composite motion of rotation and translation in the process of driving the condensing piece to move.

2. The range hood of claim 1 wherein the compound movement of the condensation member to rotate and translate comprises one of:

the condensing piece rotates firstly and then translates;

the condensation member is translated and then rotated.

3. The range hood of claim 1 wherein the number of condensation members is two, the drive assembly includes a drive member and a transmission assembly, the transmission assembly includes a first transmission and a second transmission, the first transmission connects the drive member and one of the condensation members, and the second transmission connects the first transmission and the other of the condensation members.

4. A range hood according to claim 3, wherein each of the first and second transmissions comprises:

A rotating lever; and

a turning rod, one end of which is connected with the arm part in a rotating way along the direction far away from the head part, the other end of which is connected with the condensing piece in a rotating way,

the first connecting part formed by connecting the rotating rod with the condensing piece and the second connecting part formed by connecting the turning rod with the condensing piece are separated by a distance, and the head part of the first transmission mechanism is connected with the head parts of the driving piece and the second transmission mechanism.

5. The range hood of claim 4 wherein the head of the first transmission is engaged with the head of the second transmission.

6. The range hood of claim 4, wherein the range hood comprises a guide assembly comprising a rail and a connector slidably coupled to the rail, one of the rail and the connector coupled to a side wall of the air intake passage, and the other of the rail and the connector coupled to the condensing member.

7. The range hood of claim 1 wherein the number of condensation members is two, the drive assembly includes two drive members and a transmission assembly, the transmission assembly includes a first transmission and a second transmission, the first transmission connects one of the drive members and one of the condensation members, and the second transmission connects the other of the drive members and the other of the condensation members.

8. The range hood of claim 7 wherein each of the first and second transmissions comprises:

a rotating lever; and

9. The range hood of claim 1, wherein the range hood comprises a controller and a smoke sensor, the controller is connected with the smoke sensor and the driving assembly, the smoke sensor is used for detecting the size of smoke in the air inlet channel, the controller is used for controlling the driving assembly to drive the condensation piece to be located at the first position or the second position according to the size of the smoke, or the controller is used for controlling the driving assembly to drive the condensation piece to be located at the first position or the second position according to gear information of the range hood.