CN108895511A - range hood - Google Patents

Abstract

The invention provides a range hood, relates to the technical field of kitchen appliances, and aims to solve the problem that the existing range hood is easy to escape oily fume. The range hood comprises a fume collecting hood, a machine shell and a fume collecting hood, wherein the machine shell is connected with the fume collecting hood, the fume collecting hood is arranged along the circumferential direction of the fume collecting hood and can move up and down relative to the fume collecting hood, and the machine shell is used for accommodating a fan; the lower part of the fume collecting hood forms a fume collecting inner cavity. The range hood further comprises a driving device for driving the smoke collecting hood to move, and the driving device is installed on the smoke collecting hood. When the driving device drives the smoke collecting cover to move downwards, the depth of the smoke collecting inner cavity is increased. The range hood provided by the invention is used for increasing the depth of the smoke collection cavity when the range hood works, so that oil smoke can smoothly enter the machine shell, and the situation that the oil smoke escapes to the surrounding kitchen environment is reduced.

Description

range hood

technical field

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

Background technique

The range hood, also known as the range hood, is a kitchen appliance used to purify the kitchen environment. It can quickly suck away the exhaust gas generated by the stove combustion and the oil fume generated during the cooking process, and discharge it outdoors to purify the kitchen environment. the goal of. There are many types of range hoods, among which, European-style range hoods have won the favor of consumers for their simple, thin, stylish appearance. During the cooking process, a large amount of oil fume will be generated instantaneously above the stove. Under the action of diversion and gathering of the oil fume by the fume collecting hood of the range hood, the oil fume first gathers in the negative pressure area under the smoke collecting chamber, and then, in the centrifugal fan Under the action of centrifugation, the purified fume is finally discharged into the external environment.

However, the fume collecting hood of the existing European-style range hood is integrally drawn and formed, and its cavity is in the shape of a trumpet with a high middle and low sides. When the range hood is working, the oil fume in the fume collecting hood easily flows along the surface of the cavity and escapes outwards, causing the oil fume to escape, thereby greatly weakening the smoking effect of the range hood.

Contents of the invention

The object of the present invention is to provide a range hood to solve the technical problem that the existing range hood is prone to oil fume escape.

The range hood provided by the present invention includes a fume collecting hood, a casing connected to the fume collecting hood, and a fume collecting hood disposed along the circumference of the fume collecting hood and capable of moving up and down relative to the fume collecting hood; The casing is used for accommodating the fan; the lower part of the smoke collecting hood forms a smoke collecting cavity.

The range hood also includes a driving device for driving the fume collecting hood to move, the driving device is installed on the fume collecting hood; when the driving device drives the fume collecting hood to move downward, the collecting fume hood The depth of the smoke cavity increases.

Further, the driving device includes a driving member, a jacking assembly driven by the driving member, and a guide structure for guiding the movement of the smoke collection hood, and the jacking assembly is connected with the smoke collection hood.

There are two groups of the jacking assemblies, the two sets of the jacking assemblies are arranged on the same edge of the fume collecting hood, and the two sets of the jacking assemblies are arranged at intervals along the length direction of the edge.

Further, the jacking assembly includes a swing rod, a drive shaft and a push rod, wherein the axis of the drive shaft extends from the horizontal direction, one end of which is plugged and fixed to the swing rod, and the other end is plugged and fixed to the An ejector rod, and the driving shaft is rotatably arranged on the fume collecting hood; the power output end of the driving member is connected with the swing rod for driving the swing rod to swing.

A slideway extending along the length direction is provided at the edge, and the free end of the push rod moves in the slideway.

Further, the jacking assembly further includes rollers, the rollers are pivotally connected to the free end of the push rod, and the push rod moves in the slideway through the rollers.

Further, the driving part includes a motor and a transmission assembly arranged between the motor and the swing rod, the motor is installed on the smoke collection hood and is connected to the swing rod through the transmission assembly , used to drive the pendulum to swing.

The transmission assembly includes a sliding rod fixedly sleeved on the output shaft of the motor and a connecting rod slidingly connected with the sliding rod, the sliding rod is provided with a sliding slot along its length direction, and the connecting rod is There are extended posts, which are plugged into and slide in the chute; the swing rods in each group of the jacking assemblies are respectively rotatably connected to the connecting rods.

Further, the drive device also includes a first limiter and a second limiter for limiting the movement of the smoke hood, the first limiter and the second limiter The smoke collecting hood is arranged at intervals along the length direction of the edge, and the connecting rod moves between the first limiting member and the second limiting member.

The swing rods in each group of the jacking assemblies are respectively rotatably connected to the two ends of the connecting rods.

When the smoke collection hood is raised to the right position, the swing rod at one end of the connecting rod is in contact with the first stopper; The second limiting member is offset.

Further, both the first limiter and the second limiter are micro switches and both are connected to a motor, and the swing rod can trigger the first limiter/second limiter of contacts.

Further, the guide structure includes a strip-shaped hole opened on the edge and extending along the moving direction of the smoke hood, the number of the strip-shaped holes is two, and the two strip-shaped holes are respectively connected with each There is a one-to-one correspondence between the sets of jacking components, wherein the drive shaft is inserted into the strip-shaped hole, and the strip-shaped hole separates the swing rod from the ejector rod.

Further, the number of the driving devices is two groups, and the two groups of driving devices are respectively arranged on the left and right sides of the fume collecting hood.

Further, the driving device is arranged inside the body of the range hood.

The beneficial effect that range hood of the present invention brings is:

By setting a smoke collecting hood, a casing, a smoke collecting hood and a driving device, the casing is used to accommodate the fan, the smoke collecting hood is connected to the casing and its lower part forms a smoke collecting inner cavity, and the smoke collecting hood The circumferential setting, and, driven by the driving device, the smoke collection hood can move up and down relative to the smoke collection hood. The driving device is installed in the fume collecting hood.

When the range hood is in working condition, the fan is started to form a negative pressure area at the position of the smoke collection port of the smoke collection hood, and the driving device is started to drive the smoke collection hood to move downwards to increase the size of the smoke collection chamber of the smoke collection hood. When the range hood is not working, the fan is turned off, and the negative pressure area at the smoke collection port disappears. At the same time, the driving device is started again to drive the smoke hood to move upward and retract.

The setting form of the range hood effectively increases the depth of the smoke collecting inner cavity during the working process of the range hood, so that the oil fume can smoothly enter the casing, thereby reducing the situation of the oil fume escaping to the surrounding kitchen environment. Moreover, when the fume collection hood is lowered, the negative pressure area sinks to be closer to the stove, so that the cooking fumes generated at the stove can be gathered in time and further flow into the fume collection hood, improving the fume treatment efficiency. It ensures the high efficiency of range hood smoking.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is an external schematic diagram of the front view of the range hood provided by the embodiment of the present invention after the fume collection hood is lifted into place;

Fig. 2 is an external schematic diagram of the front view of the range hood provided by the embodiment of the present invention after the fume collection hood is lowered into place;

Fig. 3 is a partial structural schematic diagram of the range hood provided by the embodiment of the present invention, wherein the driving device is an exploded diagram;

Fig. 4 is a front view internal schematic diagram of the range hood provided by the embodiment of the present invention after the fume collection hood is lowered into place;

Fig. 5 is a left view internal schematic diagram of the range hood provided by the embodiment of the present invention after the fume collection hood has been lowered to its place;

Fig. 6 is A-A sectional view among Fig. 4;

Fig. 7 is a partial enlarged view of place B in Fig. 4;

Fig. 8 is a schematic diagram of cooperation between the ejector rod and the fume collection hood after the fume collection hood has been lowered into place for the range hood provided by the embodiment of the present invention;

Fig. 9 is a schematic diagram of cooperation between the ejector rod and the fume collection hood after the fume collection hood has risen for a certain distance in the range hood provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of cooperation between the ejector rod and the fume collection hood after the fume collection hood is raised to the position of the range hood provided by the embodiment of the present invention;

Fig. 11 is a schematic diagram of the position of the driving device after the fume collection hood is raised to the position of the range hood provided by the embodiment of the present invention;

Wherein, FIG. 6 , FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 are all schematic diagrams in the same viewing direction.

Reference signs:

100-casing; 200-collecting fume hood; 300-fume collecting hood; 400-driving device;

210-strip hole; 220-slide;

310 - mounting bracket;

410-motor; 420-sliding rod; 430-connecting rod; 440-swing rod; 450-support; 460-drive shaft; 470-ejector;

421 - chute;

431-insert column; 432-connecting column;

471-Roller;

510-the first limiter; 520-the second limiter.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "up", "down", "left", "right", "front", "rear" are all based on the The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention . In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connection", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

It should be noted that, in this embodiment, unless otherwise specified, the term "up and down direction" refers to the direction indicated by the ab arrows in the figure, the term "front and rear direction" refers to the direction indicated by the cd arrow in the figure, and the term " "Left and right direction" refers to the direction pointed by the arrow ef in the figure, and the other directions are based on the above direction as a reference.

As shown in Fig. 1 and Fig. 2, this embodiment provides a range hood, including a fume collecting hood 300 and a casing 100 connected with the fume collecting The smoke hood 300 is a smoke collecting hood 200 that moves up and down, wherein the casing 100 is used to accommodate the fan, and the lower part of the smoke collecting hood 300 forms a smoke collecting cavity. Moreover, the range hood further includes a driving device 400 for driving the fume collecting hood 200 to move, and the driving device 400 is installed on the fume collecting hood 300 .

When the range hood is in working condition, the fan is started to form a negative pressure zone at the position of the smoke collecting port of the smoke collecting hood 300, and the driving device 400 is started to drive the smoke collecting hood 200 to move downward (as shown in Figure 2) , so as to increase the depth of the smoke collecting inner cavity of the smoke collecting hood 300; when the range hood is in a non-working state, the fan is turned off, and the negative pressure area at the smoke collecting port disappears, and at the same time, the driving device 400 is started again to drive the smoke collecting hood 200 upward The movement is retracted (as shown in Figure 1).

The setting form of the range hood effectively increases the depth of the smoke collecting inner cavity during the working process of the range hood, so that the oil fume can smoothly enter the casing 100, thereby reducing the situation of the oil fume escaping to the surrounding kitchen environment. Moreover, when the fume collecting hood 200 is lowered, the negative pressure area sinks to be closer to the stove, so that the cooking fume generated at the stove can be gathered in time and further flow into the fume collecting hood 300, improving the fume treatment. Efficiency ensures the high efficiency of range hood smoking.

It should be noted that, in this embodiment, the smoke hood 200 may be a U-shaped structure with a left side, a right side and a front side. In actual use, the range hood is installed on the wall, and its rear end is fixedly connected to the wall. When the driving device 400 drives the smoke collecting hood to move downward, its left, right and front sides together with the rear wall form a ring structure to increase the depth of the smoke collecting cavity.

It should also be noted that in this embodiment, the fume collecting hood 200 can be arranged on the outer periphery of the fume collecting hood 300 as shown in the figure, but it is not limited to this, and other configuration forms can also be adopted, such as: It is arranged on the inner periphery of the fume collecting hood 300. At this time, the fume collecting hood 200 may be in the above-mentioned U-shaped structure, or in an annular structure. When the range hood is working, the driving device 400 drives the fume collecting hood 200 to move downward inside the fume collecting hood 300 to increase the depth of the fume collecting inner cavity. Therefore, it only needs to be able to realize the increase of the depth of the smoke-collecting cavity after the smoke-collecting hood 200 is installed in this form.

As shown in FIGS. 3 to 5 , in this embodiment, the driving device 400 includes a driving member, a jacking assembly driven to rotate by the driving member, and a guide structure for guiding the movement of the smoke hood 200 , wherein the jacking assembly is connected with the hood. The fume hood 200 is connected. Specifically, there may be two sets of jacking assemblies, and the two sets of jacking assemblies are arranged at intervals along the front-rear direction.

During the lifting process of the range hood, two sets of jacking components arranged in the front and rear directions are connected to the fume collection hood 200 at the same time, so that the fume collection hood 200 is supported by two points when it rises or falls, and the jacking components move under the action of the guiding structure. When the fume collecting hood 200 is lifted up or during the movement of the jacking assembly in the opposite direction, the fume collecting hood 200 follows the jacking assembly and descends.

It should be noted that, in this embodiment, the two sets of jacking assemblies can be the structure shown in the figure arranged on the left edge or the right edge of the fume collecting hood 300, but it is not limited to this, and Other arrangements can be adopted, such as: two sets of jacking components are arranged at intervals on the front side edge of the fume collecting hood 300 , so as to realize the lifting drive of the fume collecting hood 200 .

Please continue to refer to FIG. 3, and in conjunction with FIG. 6 and FIG. 7, in this embodiment, specifically, the jacking assembly may include a swing rod 440, a drive shaft 460 and a push rod 470, wherein the axis of the drive shaft 460 extends from the horizontal direction One end of which is plugged and fixed to the swing rod 440 , the other end is plugged and fixed to the push rod 470 , and the drive shaft 460 is rotatably arranged on the smoke collecting hood 300 . The power output end of the driving member is connected with the swing rod 440 for driving the swing rod 440 to swing. Moreover, a slideway 220 is provided laterally on the smoke collection hood 200 , and the slideway 220 extends from front to back, and the free end of the push rod 470 moves in the slideway 220 .

As shown in Figure 8, after the fume collection hood 200 is lowered to the right position, the ejector rod 470 is in an approximately horizontal state. Under the action of swinging, the drive shaft 460 fixedly connected to the swing rod 440 rotates, and then drives the push rod 470 fixedly sleeved on the drive shaft 460 to rotate; as shown in FIG. In this process, the free end of the ejector rod 470 slides in the slideway 220 on the side of the smoke collection hood 200, thereby jacking up the smoke collection hood 200 until the smoke collection hood 200 rises to the position (as shown in FIG. 10 ).

Correspondingly, when the fume collection hood 200 needs to be lowered, the driving member is activated again so that the swing bar 440 rotates in the direction opposite to the above direction. The free end keeps in contact state all the time, and descends following the position of the free end of the push rod 470 , and finally realizes the descending action of the smoke hood 200 .

This form of arrangement, in which the rotating push rod 470 is in contact with the fume collection hood 200 to lift it up or follow it down, realizes the reliable lifting of the fume collection hood 200 , and the movement is stable. Moreover, this driving structure has a relatively high degree of compactness, and realizes a large-stroke movement of the hood 200 in a limited space, thus ensuring the reliability of the range hood in this embodiment for smoking.

It should be noted that, in this embodiment, “the jacking assembly is connected to the smoke collection hood 200 ” means that the free end of the push rod 470 is in sliding contact with the lateral slideway 220 of the smoke collection hood 200 .

It should also be noted that “the side of the smoke hood 200 ” refers to the left or right side of the smoke hood 200 .

In addition, in this embodiment, the jacking assembly can be the above-mentioned setting form of using the rotating push rod 470 to lift the smoke collection hood 200, but it is not limited to this, and other setting forms can also be used, such as: crank slider mechanism . Specifically, the crank is set to be driven to rotate by the driving member, and the moving direction of the slider is set to be along the up and down direction. The fume hood 200 is raised or lowered. Therefore, it only needs to be able to realize the rising and falling of the smoke hood 200 through the setting form of the connecting rod 430 mechanism.

Of course, in this embodiment, the structural form of the jacking assembly can also be the structural form of gear rack meshing transmission or synchronous belt synchronous transmission, as long as it is through the setting form of the jacking assembly, it can realize the closing of the smoke hood 200. Reliable driving of the lifting is sufficient, and this embodiment does not limit its specific structure.

It should also be noted that when the jacking assembly is disposed on the front edge of the fume collecting hood 300 , correspondingly, the slideway 220 is disposed on the front side of the fume collecting hood 200 and extends from left to right.

Please continue to refer to Fig. 3, Fig. 7, Fig. 8, Fig. 9 and Fig. 10. In this embodiment, the jacking assembly may further include a roller 471. Specifically, the roller 471 is pivotally connected to the free end of the push rod 470, so that the push rod 470 is rollingly matched with slideway 220 through roller 471 .

When the push rod 470 drives the smoke collection hood 200 to rise or fall, the roller 471 rolls on the slideway 220 . Such setting not only greatly reduces the friction resistance between the push rod 470 and the slideway 220, but also ensures the smooth movement of the free end of the push rod 470 in the slideway 220, and reduces the possibility of the pushrod 470 being stuck in the slideway 220. Moreover, it also reduces the noise during the lifting process of the smoke hood 200 and improves the user experience.

Please continue to refer to FIG. 3 and FIG. 7 , in this embodiment, the driving member includes a motor 410 , specifically, the motor 410 is installed on the smoke collecting hood 300 and is in transmission connection with the swing rod 440 for driving the swing rod 440 to rotate.

When the fume hood 200 needs to be lowered during the working process of the range hood, the motor 410 is started to output power to the swing rod 440 to realize the rotation drive of the drive shaft 460, and then the push rod 470 is rotated to lift the hood 200; When the range hood is closed and the fume hood 200 is raised, start the motor 410 again to make it rotate in the opposite direction, and output the power to the swing rod 440, so that the drive shaft 460 rotates in the opposite direction to the above-mentioned rotation direction, and then the push rod 470 rotates in the opposite direction and the fume cover 200 will be lowered.

The motor 410 is used as the setting form of the driving part, the driving is reliable, and the transmission is stable, realizing the slow lifting of the smoke hood 200 . Moreover, in actual use, the control of the lifting stroke of the smoke hood 200 can also be achieved by selecting the number of rotations of the motor 410 .

Please continue to refer to FIG. 3 and FIG. 7 , in this embodiment, a mounting bracket 310 is fixed inside the smoke collecting hood 300 , and the motor 410 is mounted on the mounting bracket 310 . Such an arrangement realizes the assembly of the motor 410 on the smoke collecting hood 300 and ensures reliable power output of the motor 410 .

It should be noted that, in this embodiment, the driving member can be the arrangement form of the above-mentioned rotary driving member, but it is not limited to this, and other forms can also be used, such as: linear driving member, specifically, the power output of the linear driving member The end is hinged with the swing rod 440 , and when the power output end of the linear drive part stretches out in a straight line, the swing rod 440 is driven to rotate on the pivot axis between it and the smoke collecting hood 300 . Therefore, it only needs to be able to realize the rotational driving of the swing link 440 through this arrangement form of the driving member.

Specifically, when a linear drive is used as the drive, the linear drive may be an electric push rod.

Please continue to refer to FIG. 3 and FIG. 6 , in this embodiment, the jacking assembly can also include a support 450 fixedly connected to the mounting bracket 310 , and the drive shaft 460 is pivotally connected to the support 450 to realize the connection between it and the smoke collecting hood 300 . rotation connection between. Specifically, one support 450 is respectively provided in the front and rear directions of the range hood, and each support 450 is respectively rotatably connected with the drive shaft 460 in each group of jacking assemblies.

Please continue to refer to FIG. 3 and FIG. 6 , in this embodiment, the driving device 400 may also include a transmission assembly arranged between the motor 410 and the swing rod 440 , specifically, the transmission assembly includes a sliding shaft fixedly sleeved on the output shaft of the motor 410 The rod 420 and the connecting rod 430 slidably connected with the sliding rod 420, wherein the sliding rod 420 is provided with a slide groove 421 along its length direction, and the connecting rod 430 is provided with a post 431 extending radially from it, and the post 431 is inserted into the sliding groove 421 and slide in the slide groove 421, and the swing rods 440 in each group of jacking assemblies are respectively rotatably connected to the connecting rods 430.

Please continue to refer to Fig. 6, when the fume hood 200 needs to be moved up and down, the motor 410 is started to drive the sliding rod 420 to rotate; during the rotation of the sliding rod 420, the chute 421 has a limiting effect on the insertion post 431 on the connecting rod 430 down, so that the sliding rod 420 drives the connecting rod 430 to move in translation. During the translation process of the connecting rod 430, the post 431 slides in the chute 421; The rod 440 rotates, thereby realizing the driving of the ejector rod 470 .

This setting form of using one driving part to realize the interlocking of two sets of jacking components not only reduces the setting cost of the driving device 400, and further reduces the setting cost of the range hood in this embodiment, but also ensures that each set of jacking components The synchronization of the movement of the middle ejector rods 470 enables the ejector rods 470 arranged at intervals in the front and rear directions to simultaneously lift up the fume collection hood 200, avoiding to a certain extent the inclination of the fume collection hood 200 during the lifting process and the inclination caused by the inclination. The lifting is stuck, thereby greatly improving the driving reliability of the fume hood 200, and then ensuring the working reliability of the range hood of this embodiment.

Please continue to refer to FIG. 3 , in this embodiment, the jacking assembly may further include a connecting column 432 , specifically, the connecting column 432 is fixedly disposed on the connecting rod 430 , and the swing rod 440 is rotatably connected to the connecting rod 430 through the connecting column 432 .

Specifically, please continue to refer to FIG. 6 , in this embodiment, the swing rods 440 in each set of jacking assemblies are respectively rotatably connected to both ends of the connecting rod 430 . Such arrangement ensures the balance of the force on the connecting rod 430, and also increases the distance between the support points when the smoke hood 200 is lifted, preventing the smoke hood 200 from tilting to one side.

Please continue to refer to FIG. 3 and FIG. 6 , and in conjunction with FIG. 11 , in this embodiment, the drive device 400 may also include a first limiter 510 and a second limiter for limiting the movement of the smoke hood 200 520 , specifically, the first limiting member 510 and the second limiting member 520 are spaced apart from the front to the rear of the smoke collecting hood 300 , and the connecting rod 430 moves between the first limiting member 510 and the second limiting member 520 .

As shown in FIG. 11 , when the smoke collection hood 200 is raised to the right position, the swing rod 440 located in front of the smoke collection hood 300 is against the first stopper 510 , and the continuous upward movement of the smoke collection hood 200 is restricted by the first stopper 510 ; As shown in Figure 6, when the smoke hood 200 is lowered in place, the swing rod 440 behind the smoke hood 200 is offset against the second limiter 520, and the second limiter 520 limits the continuation of the smoke hood 200. down exercise.

By arranging the first limiter 510 and the second limiter 520 , the reliable limitation of the rising position and the lowering position of the smoke collection hood 200 is realized, and excessive movement of the smoke collection hood 200 is prevented.

It should be noted that, when the jacking assembly is arranged on the front edge of the fume collecting hood 300 , correspondingly, the first limiting member 510 and the second limiting member 520 are arranged on the fume collecting hood 300 at intervals from left to right.

Please continue to refer to Fig. 3, Fig. 6 and Fig. 11. Specifically, in this embodiment, the first limiting member 510 and the second limiting member 520 are both micro switches and both are connected to the motor 410. The front swing rod 440 can trigger the contact of the micro switch arranged at the front, and the swing rod 440 at the rear can trigger the contact of the micro switch arranged at the rear.

When the smoke hood 200 is raised to the right position, the first limiter 510 is triggered, and then the first limiter 510 feeds back the signal to the motor 410, and the motor 410 is controlled to stop rotating, preventing the smoke hood 200 from continuing to rise; After the cover 200 is lowered in place, the second limiter 520 is triggered, and then the second limiter 520 feeds back a signal to the motor 410 to control the motor 410 to stop rotating, preventing the smoke hood 200 from continuing to descend.

The setting form of using the micro switch to realize the limit of the smoke hood 200 has a sensitive response and a high working reliability.

It should be noted that in this embodiment, the above-mentioned structural form of using the swing rod 440 to trigger the micro switch can be used, but it is not limited to this, and other configuration forms can also be used, such as: in the rod section of the connecting rod 430 Set the lever on the top, and use the lever to trigger the micro switch, etc., as long as the trigger of the micro switch can be realized by setting this setting form.

Please continue to refer to Fig. 3, Fig. 8, Fig. 9 and Fig. 10. In this embodiment, the guide structure includes a lateral strip hole 210 provided in the smoke collection hood 200. Specifically, the strip hole 210 extends along the up and down direction. , and the number of strip-shaped holes 210 is two, and the two strip-shaped holes 210 correspond to each group of jacking components respectively. Wherein, the driving shaft 460 is inserted in the bar-shaped hole 210 , and the bar-shaped hole 210 separates the swing rod 440 from the push rod 470 .

Please continue to refer to FIG. 8 to FIG. 10 , during the process of the push rod 470 driving the smoke collection hood 200 up, the smoke collection hood 200 is gradually jacked up. The shape hole 210 is guided, and when the drive shaft 460 moves to the bottom end of the bar shape hole 210 relative to the bar shape hole 210, the smoke hood 200 rises to the position.

The above description is the relative movement between the drive shaft 460 and the bar-shaped hole 210, that is to say, the movement of the drive shaft 460 relative to the bar-shaped hole 210 to the bottom end of the bar-shaped hole 210 is a description of the position between the two. In fact, The position of the driving shaft 460 is fixed, and the bar-shaped hole 210 moves up and down.

Please continue to refer to FIG. 3 , in this embodiment, the number of driving devices 400 can be two groups. Specifically, two groups of driving devices 400 are respectively arranged on the left and right sides of the smoke collecting hood 300 .

Such a setting makes the fume collection hood 200 be driven up and down, and its left and right sides are stressed at the same time, which effectively prevents the situation that the fume collection hood 200 is stuck in the lifting movement caused by the force on one side, and ensures The reliability of raising and lowering the fume hood 200 ensures the working reliability of the range hood of this embodiment.

Please continue to refer to FIG. 7 , in this embodiment, the driving device 400 is disposed inside the body of the range hood.

The setting form in which the driving device 400 is hidden inside the range hood has a reasonable space utilization and a compact structure, which reduces space waste and improves the integration of the range hood in this embodiment. Moreover, such a setting also reduces the exposure of the parts, avoids to a certain extent the adverse effect caused by the cooking fume environment on the movement of the parts, and ensures the reliability of the lifting process of the fume hood 200 .

Specifically, in this embodiment, the motor 410, the sliding rod 420, the connecting rod 430, the swing rod 440 and the support 450 are all arranged inside the smoke collecting hood 300, and the push rod 470 and the roller 471 are arranged inside the smoke collecting hood 200 , the driving shaft 460 protrudes from the fume collecting hood 300 to the direction of the fume collecting hood 200 , and is fixedly connected with the ejector rod 470 inside the fume collecting hood 200 .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some or all of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A range hood, characterized in that it comprises a fume collection hood (300) and a casing (100) connected to the fume collection hood (300), and is arranged along the circumference of the fume collection hood (300) and A smoke collection hood (200) capable of moving up and down relative to the smoke collection hood (300); the casing (100) is used to house a fan; the bottom of the smoke collection hood (300) forms a smoke collection cavity; The range hood also includes a driving device (400) for driving the movement of the fume collecting hood (200), and the driving device (400) is installed on the fume collecting hood (300); when the driving device (400 ) drives the smoke collection hood (200) to move downward, the depth of the smoke collection cavity increases. 2. The range hood according to claim 1, characterized in that, the driving device (400) comprises a driving member, a jacking assembly driven by the driving member and used to guide the smoke collection hood (200) A moving guide structure, the jacking assembly is connected to the smoke collection hood (200); There are two groups of the jacking assemblies, the two sets of the jacking assemblies are arranged on the same edge of the fume collecting hood (300), and the two sets of the jacking assemblies are arranged at intervals along the length direction of the edge. 3. The range hood according to claim 2, characterized in that the jacking assembly comprises a swing rod (440), a drive shaft (460) and a push rod (470), wherein the drive shaft (460) The axis extends from the horizontal direction, one end of which is plugged and fixed to the swing rod (440), the other end is plugged and fixed to the push rod (470), and the drive shaft (460) is rotatably arranged on the set On the fume hood (300); the power output end of the drive member is connected with the swing rod (440), for driving the swing rod (440) to swing; A slideway (220) extending along its length direction is arranged at the edge, and the free end of the push rod (470) moves in the slideway (220). 4. The range hood according to claim 3, characterized in that, the jacking assembly further comprises a roller (471), the roller (471) is pivotally connected to the free end of the push rod (470), the The push rod (470) moves in the slideway (220) through the roller (471). 5. The range hood according to claim 3, characterized in that the driving member comprises a motor (410) and a transmission assembly arranged between the motor (410) and the swing rod (440), the The motor (410) is installed on the fume collecting hood (300) and is connected to the swing rod (440) through the transmission assembly, so as to drive the swing rod (440) to swing; The transmission assembly includes a sliding rod (420) fixedly sleeved on the output shaft of the motor (410) and a connecting rod (430) slidingly connected with the sliding rod (420), and the sliding rod (420) A chute (421) is provided in the length direction, and a post (431) is provided radially extending from the connecting rod (430), and the post (431) is inserted into the chute (421) and slide in the chute (421); the swing rods (440) in each group of the jacking assemblies are respectively rotatably connected to the connecting rods (430). 6. The range hood according to claim 5, characterized in that, the driving device further comprises a first limiting member (510) and a second limiting member (510) for limiting the movement of the smoke collection hood (200). The limiter (520), the first limiter (510) and the second limiter (520) are arranged at intervals along the length direction of the edge on the smoke collecting hood (300), and the connecting The rod (430) moves between the first limiting member (510) and the second limiting member (520); the swing rods (440) in each group of the jacking assemblies are respectively rotatably connected to the the two ends of the connecting rod (430); When the smoke collection hood (200) is raised to the position, the swing rod (440) at one end of the connecting rod (430) is against the first stopper (510); when the smoke collection hood (200) After falling to the position, the swing rod (440) located at the other end of the connecting rod (430) abuts against the second limiting member (520). 7. The range hood according to claim 6, characterized in that, both the first limiter (510) and the second limiter (520) are micro switches and both are connected to the motor (410 ) connection, the swing rod (440) can trigger the contacts of the first limiting member (510)/second limiting member (520). 8. The range hood according to claim 3, characterized in that, the guide structure comprises a strip-shaped hole (210) opened on the edge and extending along the moving direction of the fume collection hood (200), the The number of bar-shaped holes (210) is two, and the two bar-shaped holes (210) correspond to each group of the jacking components respectively, wherein the drive shaft (460) is inserted in the bar In the shaped hole (210), the bar-shaped hole (210) separates the swing rod (440) from the push rod (470). 9. The range hood according to any one of claims 1-8, characterized in that, the number of the driving devices (400) is two groups, and the two groups of driving devices (400) are respectively arranged in the smoke collecting The left and right sides of cover (300). 10. The range hood according to any one of claims 1-8, characterized in that the driving device (400) is arranged inside the body of the range hood.