CN112856505A - Range hood and working method thereof - Google Patents
Range hood and working method thereof Download PDFInfo
- Publication number
- CN112856505A CN112856505A CN202110018174.0A CN202110018174A CN112856505A CN 112856505 A CN112856505 A CN 112856505A CN 202110018174 A CN202110018174 A CN 202110018174A CN 112856505 A CN112856505 A CN 112856505A
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- smoke
- baffle
- temperature
- range hood
- inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Abstract
The invention relates to a range hood, which comprises a hollow shell (1), wherein a smoke inlet (110) is formed in the shell (1), and the range hood is characterized in that: the smoke baffle plate (2) made of shape memory alloy materials is arranged on the shell (1) corresponding to the smoke inlet (110), and the smoke baffle plate (2) is arranged to be capable of closing the smoke inlet (110) when the environment temperature is in a normal room temperature state and opening the smoke inlet (110) due to deformation when the environment temperature reaches or exceeds the phase change state temperature state. The invention also discloses a working method of the range hood. Compared with the prior art, the smoke inlet can be opened and closed without arranging a driving mechanism.
Description
Technical Field
The invention belongs to the technical field of kitchen appliances, and particularly relates to a range hood and a working method thereof.
Background
In the existing range hood, in order to prevent the oil smoke from flowing backward, improve the smoke collecting effect and prevent the oil smoke from escaping into the air, people design a scheme of designing a smoke baffle plate at a smoke inlet, such as structures disclosed in patent invention with patent number ZL201910567583.9, a side-suction range hood (with publication number CN110375354B), utility model patent with patent number ZL201821959688.6, a range hood (with publication number CN209295241U), and patent invention with patent number ZL201910686483.8, a drip oil discharging range hood (with publication number CN 110397971B). The smoke baffle plate can shield the smoke inlet in a closed state, and a smoke gathering area is formed in a state that the smoke baffle plate is opened at a certain angle.
The existing smoke baffle is connected to the smoke inlet of the range hood in a multi-rotation manner, and a driving mechanism capable of driving the smoke baffle to rotate is installed in the range hood. The rotary connecting structure between the smoke baffle and the range hood and the arrangement of the driving mechanism have the following defects:
firstly, the structural complexity of the range hood can be improved to a certain extent, and further the production cost is improved;
if oil stains are attached to the connecting part of the smoke baffle and the range hood or/and the driving mechanism, the rotation of the smoke baffle can be influenced, and the smoke baffle can not be normally opened and closed in serious cases, so that the normal use of the range hood is influenced;
thirdly, even if the smoke baffle is arranged, when the oil smoke is suddenly increased, the range hood can only adjust the air quantity and the suction force by adjusting the rotating speed of the fan to improve the oil smoke absorption effect, which has higher requirements on the performance of the fan;
fourthly, the risk of shielding the sight line exists when the smoke baffle is opened.
On the other hand, in the field of materials, Shape Memory Alloys (SMA) are an intelligent material capable of memorizing an original Shape. When the alloy is subjected to a limited plastic deformation below the transformation temperature, the alloy can be restored to the original Shape before deformation by heating, and this special phenomenon is called Shape Memory Effect (SME).
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a range hood which can open and close a smoke inlet without arranging a driving mechanism aiming at the current situation of the prior art.
The second technical problem to be solved by the invention is to provide a range hood which can adjust the shape of a smoke baffle plate according to the size of oil smoke.
The third technical problem to be solved by the invention is to provide a range hood capable of improving the smoke exhaust effect.
The fourth technical problem to be solved by the invention is to provide a working method of the range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes inside hollow casing, seted up into mouth on the casing, its characterized in that: the smoke baffle plate made of shape memory alloy materials is arranged on the shell corresponding to the smoke inlet, and the smoke baffle plate is arranged to be capable of closing the smoke inlet when the environment temperature is in a normal room temperature state and opening the smoke inlet due to deformation when the environment temperature reaches or exceeds the phase change state temperature state.
The smoke baffle plate can increase the temperature by utilizing the heat generated by the cooking bench so as to generate deformation, and can also maintain the deformation by utilizing the temperature in the cavity of the range hood in the working process. To further solve the second technical problem, it is preferable that the range hood further comprises a temperature adjusting member for adjusting and controlling the temperature of the smoke barrier; the temperature regulating head of the temperature regulating part is attached to or arranged close to the smoke baffle. So as to adjust the temperature of the smoke baffle at any time and further change the shape of the smoke baffle.
Preferably, the smoke inlet is located on the front side wall of the shell, the top or the bottom of the smoke baffle is connected with the shell, the temperature adjusting heads are at least two groups and respectively arranged corresponding to the left side part and the right side part of the smoke baffle, and each group of temperature adjusting heads comprises at least two temperature adjusting head units which are distributed up and down. So, through the work of controlling each temperature regulating head, control the temperature of keeping off each position of cigarette board, and then make the part that keeps off the temperature rise of cigarette board can produce deformation, and the part shape that does not heat up does not change, and then changes the shape of keeping off the cigarette board.
In order to further adjust the shape of the smoke baffle according to the size of the oil smoke, the smoke baffle also comprises a light generator and a light sensor which are arranged on the shell, and the light generator and the light sensor are respectively and correspondingly arranged at the left side and the right side of the smoke inlet; the temperature control device also comprises a controller for receiving signals sent by the light sensor, and the output end of the controller is connected with the temperature adjusting piece through electric signals. When the oil smoke is large, the light ray sensor receives fewer light signals emitted by the light ray generator, so that the temperature of the smoke baffle can be regulated and controlled, and the deformation quantity of the smoke baffle is increased; when the oil smoke is less, the light sensor receives more light signals emitted by the light generator, so that the temperature of the smoke baffle can be regulated and controlled, and the deformation of the smoke baffle is reduced.
When the range hood is used practically, the range hood is opened after the range body is opened, the environment temperature can be increased after the range body is opened, the range hood is prevented from being opened mistakenly, the range hood further comprises a temperature sensor arranged on the shell and used for detecting the environment temperature, and a controller used for receiving a signal sent by the temperature sensor, and the output end of the controller is connected with an electric signal of the temperature adjusting piece.
In order to enable the range hood to start working when smoke exists in the environment and prevent the range hood from being opened mistakenly, the range hood further comprises a smoke sensor which is arranged on the shell and used for detecting the oil smoke in the environment, and the output end of the smoke sensor is connected with the electric signal of the input end of the controller.
In the above scheme, the smoke inlet is positioned at the front side of the shell. Of course the smoke inlet may also be located at the bottom, side, etc. of the housing.
Preferably, the smoke baffle is substantially flat, the edge of one side of the smoke baffle is connected with the edge of the smoke inlet, the smoke baffle is recessed into an arc-shaped plate after the temperature of the smoke baffle rises to the phase-change temperature value, and a first gap is formed between the edge of the smoke baffle and the edge of the smoke inlet. When the oil smoke is just generated, the rising speed is high at the lower side, and the impact angle between the smoke baffle plate and the oil smoke is small, so that the oil smoke can be guided along the smoke baffle plate to a greater degree. When the oil smoke rises to the upper side, the oil smoke speed is relatively reduced, and the included angle between the tangent line of each point of the upper side of the smoke baffle plate and the horizontal direction is smaller, so that the oil smoke can be effectively collected.
In order to further improve the effects of holding and guiding the cigarette, furthermore, the cigarette blocking plate is provided with a through hole and is provided with a baffle made of shape memory alloy material so as to open and close the through hole.
Further, the baffle has at least two and upper and lower distribution, and each baffle is arranged into can deformation to evagination or the arc of indent, and is formed with the second clearance that supplies the oil smoke to pass through between two adjacent baffles after the deformation.
Furthermore, the baffle is convex after being deformed, and the lower part of the deformed baffle extends downwards in an inclined way to form a smoke collecting part for the oil smoke to flow upwards along the smoke collecting part; the upper part of the deformed baffle extends upwards in an inclined way to form a smoke guide part along which the oil smoke flows upwards into the second gap; the smoke guide part inclines towards the inside of the shell, and the inclination angle of the smoke guide part of the baffle positioned above is smaller than that of the baffle positioned below. Therefore, the oil smoke can enter the range hood from different positions, and the oil smoke can not generate mutual disturbance due to excessive gaps to influence the oil absorption effect.
Preferably, the baffle is substantially flat, the edge of the top end of the baffle is connected with the edge of the top of the through hole, the baffle curls upwards after the temperature of the baffle rises to the phase-change temperature value, and the cross section of the curled baffle is in an involute spiral line structure. The baffle after curling can not shield the sight, and can improve the effects of gathering cigarettes, guiding cigarettes and smoking.
Preferably, the smoke baffle is substantially flat, the edge of the top end of the smoke baffle is connected with the edge of the top of the smoke inlet, and the smoke baffle protrudes outwards to form an arc-shaped plate to open the smoke inlet after the temperature of the smoke baffle rises to the phase-change temperature value.
In order to further solve the third technical problem, preferably, the housing includes a smoke collecting cover and a fan cover disposed above the smoke collecting cover and communicated with the smoke collecting cover, and the smoke inlet is located on the smoke collecting cover; the front side and the rear side of the fan are respectively provided with a front side air inlet channel and a rear side air inlet channel, and the fan is arranged in the fan cover in a manner of moving back and forth; the fan is characterized by also comprising a driving mechanism, wherein the output end of the driving mechanism is connected with the fan so as to drive the fan to move. Therefore, the reasonable distribution of the flow of the oil smoke on the front surface and the rear surface of the fan is ensured through the movement of the front side of the fan, and the smoke exhaust effect of the range hood is improved.
Furthermore, the driving mechanism comprises a motor arranged in the fan cover, a screw rod connected with an output shaft of the motor, and a sliding block sleeved on the screw rod and in threaded connection with the screw rod, and the sliding block is connected with the fan.
The technical scheme adopted by the invention for solving the fourth technical problem is as follows: the working method of the range hood is characterized by comprising the following steps: firstly, the environmental temperature or the heating smoke baffle plate (2) is utilized to enable the smoke baffle plate (2) to reach or exceed the phase-change temperature and deform so as to open the smoke inlet (110); then starting the range hood, and utilizing the heat generated in the range hood or heating the smoke baffle plate (2) to enable the temperature of the smoke baffle plate (2) to reach or exceed the phase-change temperature of the smoke baffle plate; and finally, the range hood is closed, the smoke baffle plate (2) is cooled to reduce the temperature, and the shape of the smoke baffle plate (2) is restored to close the smoke inlet (110).
Compared with the prior art, the invention has the advantages that: through the cigarette baffle that sets up shape memory alloy material in smoke inlet department, the cigarette baffle takes place deformation and then opens and close smoke inlet along with temperature variation, so need not to set up in addition that actuating mechanism can open and close smoke inlet, and the cigarette baffle can directly link to each other with the casing, and need not to set up in addition and rotate connection structure, and then simplify structure, reduce cost and be convenient for implement.
Drawings
Fig. 1 is a schematic partial structural view (before deformation of the smoke barrier) according to a first embodiment of the present invention;
FIG. 2 is an exploded perspective view of FIG. 1;
FIG. 3 is a schematic structural diagram of a smoke barrier deformed to a certain state according to an embodiment of the present invention;
FIG. 4 is a schematic view of a portion of the structure between the thermal head unit and the smoke barrier in accordance with one embodiment of the present invention;
fig. 5 is a schematic partial structural view (the smoke barrier is deformed to another state) according to the first embodiment of the present invention;
FIG. 6 is a schematic view of a partial structure of the cigarette retaining plate at another viewing angle according to another embodiment of the present invention (the cigarette retaining plate is deformed to another state);
FIG. 7 is a schematic structural diagram of a blower and a driving mechanism according to a first embodiment of the present invention;
FIG. 8 is a partially exploded perspective view of the blower and drive mechanism in accordance with one embodiment of the present invention;
FIG. 9 is a schematic view of a partial structure of a second embodiment of the present invention (after deformation of the smoke barrier);
FIG. 10 is a schematic view of a partial structure of a third embodiment of the present invention (before deformation of the smoke barrier);
FIG. 11 is a schematic view of a partial structure of a third embodiment of the present invention (after deformation of the smoke barrier);
fig. 12 is a partial schematic structural view (after deformation of the smoke barrier) of another view angle according to the third embodiment of the present invention;
FIG. 13 is a schematic structural view of a smoke barrier in accordance with a third embodiment of the present invention;
FIG. 14 is a schematic view of a partial structure of a fourth embodiment of the present invention (before deformation of the smoke barrier);
FIG. 15 is a schematic view of a partial structure of a fourth embodiment of the present invention (after deformation of the smoke barrier);
FIG. 16 is a schematic view of a partial structure of a fifth embodiment of the present invention (before deformation of the smoke barrier);
FIG. 17 is a schematic view of a partial structure of a fifth embodiment of the present invention (after deformation of the smoke barrier);
FIG. 18 is a schematic view of a partial structure of a sixth embodiment of the present invention (after deformation of the smoke barrier);
fig. 19 is a schematic partial structural view (after the smoke barrier is deformed) of a seventh embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows:
as shown in fig. 1 to 8, a range hood and a first preferred embodiment of a working method thereof according to the present invention includes a housing 1, a smoke baffle 2, a temperature adjusting member, a light generator 91, a light sensor 92, a temperature sensor 3, a smoke sensor 4, a controller, a fan 5, and a driving mechanism 6.
The housing 1 is hollow, the housing 1 includes a smoke collecting hood 11, and a fan hood 12 disposed above the smoke collecting hood 11 and communicated with the smoke collecting hood 11, and the front side of the smoke collecting hood 11 is open to form a smoke inlet 110.
The smoke baffle 2 is made of shape memory alloy material and is arranged corresponding to the position of the smoke inlet 110, the smoke baffle 2 is arranged to close the smoke inlet 110 when the ambient temperature is in the normal room temperature state, and to open the smoke inlet 110 when the ambient temperature reaches or exceeds the phase change state temperature state. In this embodiment, the smoke barrier 2 before deformation is substantially in the shape of a vertically-arranged square flat plate, and the edge of the bottom of the smoke barrier 2 is connected with the edge of the bottom of the smoke inlet 110.
The temperature regulating part is used for regulating and controlling the temperature of the smoke baffle plate 2, and the temperature regulating head 7 of the temperature regulating part is attached to or arranged close to the smoke baffle plate 2. In this embodiment, the temperature adjusting heads 7 are provided with two groups and respectively correspond to the left side and the right side of the smoke barrier 2, each group of temperature adjusting heads 7 comprises at least two temperature adjusting head units 70 distributed up and down, the radiation range of the temperature adjusting head units 70 is limited, only the part of the smoke barrier 2 near the temperature adjusting head units 70 can be heated, so that only the part of the smoke barrier 2 can be deformed, the shape of the unheated part of the smoke barrier 2 is not changed, therefore, the working state and the working temperature of each temperature adjusting head unit 70 can change the shape of the smoke barrier 2, and the radiation area of each temperature adjusting head unit 70 is shown as the area surrounded by the dotted lines in fig. 4. The smoke barrier 2 can be deformed to a required shape by regulating the work of each temperature regulating head unit 70, and a first gap 13 for oil smoke to enter is formed between the edge of the deformed smoke barrier 2 and the edge of the smoke inlet 110, for example, in fig. 3, the smoke barrier 2 is heated by the temperature regulating head unit 70 positioned at the upper part, and the temperature regulating head unit 70 positioned at the lower part does not work, so that the shape of the concave lower part at the upper part of the smoke barrier 2 is basically unchanged; as shown in fig. 5 and 6, the temperature adjusting head units 70 heat the smoke baffle 2 together to make the smoke baffle 2 integrally concave into an arc shape, the smoke baffle 2 is concave, the smoke collecting cavity is enlarged, the shape of the smoke baffle 2 can better guide smoke to the smoke, the first gaps 13 on the left and right sides and the upper side can simultaneously intake air, and air curtains are formed on the upper side and the left and right sides of the range hood. Namely, air is sucked in a four-circle circular suction mode, so that the phenomenon of oil smoke escape caused by impact of the oil smoke and the smoke baffle plate 2 is reduced.
The light generators 91 and the light sensors 92 are respectively and correspondingly disposed at the left and right sides of the smoke inlet 110 of the smoke collecting hood 11, and at least two sets of the light generators 91 and the corresponding light sensors 92 are distributed along the vertical direction of the smoke inlet 110. Temperature sensor 3 and smoke sensor 4 locate the front side of collection petticoat pipe 11 respectively, and the input of controller links to each other with smoke sensor 4, temperature sensor 3, light sensor 92's output signal of telecommunication, and the output of controller links to each other with temperature regulation spare, fan 5 signal of telecommunication.
A front side air inlet channel 51 and a rear side air inlet channel 52 are respectively formed at the front side and the rear side of the fan 5, and the fan 5 is arranged in the fan cover 12 in a manner of moving forwards and backwards; the output end of the driving mechanism 6 is connected with the fan 5 to drive the fan 5 to move. Specifically, the driving mechanism 6 comprises a motor 61 installed in the fan cover 12, a screw 62 connected to an output shaft of the motor 61, and a slider 63 sleeved on the screw 62 and in threaded connection with the screw 62, wherein the slider 63 is connected to the fan 5. The rotation of the output shaft of the motor 61 can drive the sliding block 63 to move, and then the fan 5 is driven to move. Please refer to fig. 8.
The working method of the range hood comprises the following steps:
when the range hood is used, when the values detected by the smoke sensor 4 and the temperature sensor 3 are lower than preset values, the controller controls the range hood to enter a standby or closed state;
on the contrary, when the values detected by the smoke sensor 4 and the temperature sensor 3 are higher than the preset values, the fan 5 starts to operate, and meanwhile, the temperature regulating part works to heat the smoke baffle plate 2, so that the smoke baffle plate 2 is deformed to open the smoke inlet 110;
in the working process of the range hood, when the light beams generated by the light generator 91 of a certain group are received by the light sensor 92, the oil smoke concentration of the corresponding region of the group is low, the shape of the smoke baffle plate 2 can be properly changed through the temperature adjusting part, so that the smoke baffle plate 2 is more attached to the region with high oil smoke concentration, and the oil smoke is prevented from escaping.
After the range hood is used, the smoke baffle 2 is cooled and the temperature is reduced, and the shape of the smoke baffle 2 is recovered to close the smoke inlet 110.
Example two:
as shown in fig. 9, a second preferred embodiment of the range hood and the operating method thereof of the present invention is basically the same as the first embodiment, except that a through hole 20 is formed at the upper portion of the smoke barrier 2, and a baffle 8 made of a shape memory alloy is disposed on the smoke barrier 2 to open and close the through hole 20. The baffle plate 8 is basically in a flat plate shape, the edge of the top end of the baffle plate is connected with the edge of the top of the through hole 20, the baffle plate 8 is curled upwards after the temperature of the baffle plate rises to a phase-change temperature value, and the cross section of the curled baffle plate 8 is in an involute spiral line structure. In order to regulate the temperature of the baffle plate 8, the baffle plate 8 is also provided with a temperature regulating head unit 70. The selection of the involute spiral line can effectively ensure the temperature of the temperature regulating head unit 70 through controlling different positions, when the curvature radius of the involute spiral line is small enough, which is equivalent to that in a certain small enough area, the deformation angle is 360 degrees along a certain direction, so that the deformation in the clockwise direction can be greatly met, and the position of ideal control is reached.
Example three:
as shown in fig. 10 to 13, a third preferred embodiment of the range hood and the working method thereof of the present invention is basically the same as the first embodiment, except that a through hole 20 is formed in the smoke barrier 2, and a baffle 8 made of a shape memory alloy is disposed on the smoke barrier 2 to open and close the through hole 20. This baffle 8 has four and upper and lower distributions, and each baffle 8 is arranged into the arc of ability deformation to the indent, and is formed with the second clearance 21 that the oil smoke passes through between two adjacent baffles 8 after the deformation and between baffle 8 and the fender cigarette board 2. Similarly, in order to regulate the temperature of each baffle 8, a temperature regulating head unit 70 is respectively arranged on each baffle 8.
When the oil smoke is gradually increased, the temperature of the temperature adjusting head 7 on the smoke baffle plate 2 is increased, so that the deformation of the smoke baffle plate 2 is increased, the size of the first gap 13 is increased, and the smoke gathering effect of the smoke baffle plate 2 is improved;
when the oil smoke is further increased, the shape of each baffle 8 is controlled at the same time, so that the oil smoke at the smoke inlet 110 can be further gathered when the oil smoke enters the smoke inlet 110.
Example four:
as shown in fig. 14 and 15, a fourth preferred embodiment of the range hood and the working method thereof of the present invention is basically the same as the first embodiment, except that the top edge of the smoke baffle 2 is connected to the top edge of the smoke inlet 110 in this embodiment. First gaps 13 are formed between the left and right sides and the bottom edge of the smoke barrier 2 and the edge of the smoke inlet 110.
The working shape of the smoke baffle 2 is preset, and the shape is the working state when the oil smoke concentration is maximum. When the oil smoke is enlarged, the oil smoke is regulated and controlled through the temperature regulating head units 70, meanwhile, a temperature sensor is integrated on each temperature regulating head unit 70 and can heat, when a plurality of temperature regulating head units 70 work simultaneously, the temperature of each point position can be detected, and the temperature of the temperature regulating head units 70 is properly increased or reduced according to the conducted heat. The shape of the smoke baffle plate 2 is changed by changing the temperature of the temperature adjusting head unit 70, so that the side surface of the smoke baffle plate 2 is matched with the shape of the oil smoke, the area of an air inlet is increased, air is introduced in a four-cycle circular suction mode, and the escape of the oil smoke caused by the impact of the oil smoke and the smoke baffle plate 2 is reduced. When the oil smoke is smaller, the shape of the smoke baffle plate 2 is changed, so that the smoke baffle plate 2 is closer to the oil smoke generating position, and the oil smoke absorption effect is improved.
Example five:
as shown in fig. 16 and 17, a fifth preferred embodiment of the range hood and the operating method thereof according to the present invention is basically the same as the first embodiment, except that the smoke inlet 110 in the present embodiment is located at the upper portion of the front side of the smoke collecting cover 11, the edge of the top end of the smoke blocking plate 2 is connected to the edge of the top of the smoke inlet 110, and the smoke blocking plate 2 protrudes outward to form an arc-shaped plate after the temperature of the smoke blocking plate rises to the phase-change temperature value, so as to open the smoke inlet 110.
Example six:
as shown in fig. 18, a sixth preferred embodiment of the range hood and the operating method thereof according to the present invention is basically the same as the first embodiment, except that no temperature adjustment component is provided in the present embodiment, the smoke barrier 2 is deformed by heat generated by the range body, and the deformation is maintained by heat in the inner cavity of the housing 1 of the range hood. The working shape of the smoke baffle 2 in the mode is only one, a certain shape needs to be processed in advance, the smoke baffle 2 deforms after a certain temperature is reached, and the deformation of the smoke baffle 2 is gradually recovered after the temperature is reduced. Namely, in the using process, the shape of the cooking range cannot be automatically changed due to the size of oil smoke, and the cooking range can be opened by utilizing the heat of the cooking range.
Example seven:
as shown in fig. 19, a seventh preferred embodiment of the range hood and the operating method thereof of the present invention is basically the same as the third embodiment, except that three baffles 8 are distributed up and down in the present embodiment, each baffle 8 is deformed and then protrudes outward, and the lower portion of the deformed baffle 8 extends obliquely downward to form a smoke collecting portion 81 along which the oil smoke flows upward; the upper part of the deformed baffle 8 extends upwards in an inclined way to form a smoke guide part 82 along which the oil smoke flows upwards into the second gap 21; the smoke guide portion 82 is inclined toward the inside of the housing 1, and the inclination angle of the smoke guide portion 82 of the upper baffle 8 is smaller than the inclination angle α of the smoke guide portion 82 of the lower baffle 8.
Shape memory alloys referred to herein are conventional materials, and the high temperature phase of shape memory alloys has high structural symmetry, typically an ordered cubic structure. Below the Ms temperature, a single oriented high temperature phase transforms into a martensitic variant with a different orientation. When such a material is deformed below the Ms temperature to produce a component, the martensitic variants in the material, which are unfavorable to the direction of the stresses, are continuously reduced; the growth continues in a favorable position. And finally transformed into an element having ordered martensite with a single orientation. When the material is heated again to the As point or higher, the single-oriented martensite with low symmetry undergoes reverse transformation, and the former single-oriented high-temperature phase is formed. The reversible transformation of the microstructure allows the material to recover its macroscopic shape at high temperatures, known as one-way shape memory. The memory element after being processed by a certain process can recover the shape at a low temperature when being cooled below Ms, which is called a two-way shape memory effect.
Claims (16)
1. The utility model provides a range hood, includes inside hollow casing (1), seted up smoke inlet (110) on casing (1), its characterized in that: the smoke baffle plate (2) made of shape memory alloy materials is arranged on the shell (1) corresponding to the smoke inlet (110), and the smoke baffle plate (2) is arranged to be capable of closing the smoke inlet (110) when the environment temperature is in a normal room temperature state and opening the smoke inlet (110) due to deformation when the environment temperature reaches or exceeds a phase change state temperature state.
2. The range hood of claim 1, wherein: the temperature adjusting part is used for adjusting and controlling the temperature of the smoke baffle plate (2); the temperature adjusting head (7) of the temperature adjusting piece is attached to or arranged close to the smoke baffle plate (2).
3. The range hood of claim 2, wherein: the cigarette inlet (110) is located on the front side wall of the shell (1), the top or the bottom of the cigarette blocking plate (2) is connected with the shell (1), the temperature adjusting heads (7) are at least two groups and respectively correspond to the left side part and the right side part of the cigarette blocking plate (2), and each group of temperature adjusting heads (7) comprises at least two temperature adjusting head units (70) which are distributed up and down.
4. The range hood of claim 3, wherein: the cigarette smoke purifier also comprises a light generator (91) and a light sensor (92) which are arranged on the shell (1), wherein the light generator (91) and the light sensor (92) are respectively and correspondingly arranged on the left side and the right side of the cigarette inlet (110); the temperature control device also comprises a controller for receiving signals sent by the light sensor (92), and the output end of the controller is connected with the temperature adjusting piece through electric signals.
5. The range hood of claim 2, wherein: the temperature sensor (3) arranged on the shell (1) and used for detecting the ambient temperature and the controller used for receiving signals sent by the temperature sensor (3) are further included, and the output end of the controller is connected with the electric signal of the temperature adjusting piece.
6. The range hood of claim 5, wherein: the environment-friendly smoke detection device is characterized by further comprising a smoke sensor (4) arranged on the shell (1) and used for detecting oil smoke in the environment, wherein the output end of the smoke sensor (4) is connected with an electric signal of the input end of the controller.
7. The range hood of claim 1, wherein: the smoke inlet (110) is positioned at the front side of the shell (1).
8. The range hood of claim 7, wherein: the smoke baffle (2) is basically in a flat plate shape, the edge of one side of the smoke baffle is connected with the edge of the smoke inlet (110), the smoke baffle (2) is inwards concaved into an arc-shaped plate after the temperature of the smoke baffle rises to a phase-change state temperature value, and a first gap (13) is formed between the edge of the smoke baffle (2) and the edge of the smoke inlet (110).
9. The range hood of claim 8, wherein: the smoke baffle (2) is provided with a through hole (20), and the smoke baffle (2) is provided with a baffle (8) made of shape memory alloy material to open and close the through hole (20).
10. The range hood of claim 9, wherein: baffle (8) have at least two and distribute from top to bottom, each baffle (8) are arranged into can deformation to the arc of evagination or indent, and are formed with second clearance (21) that the confession oil smoke passes through between two adjacent baffles (8) and between baffle (8) and the cigarette board (2) after the deformation.
11. The range hood of claim 10, wherein: the baffle (8) is convex after being deformed, and the lower part of the deformed baffle (8) extends downwards in an inclined way to form a smoke collecting part (81) along which the oil smoke flows upwards; the upper part of the deformed baffle (8) extends upwards in an inclined way to form a smoke guide part (82) along which the oil smoke flows upwards into the second gap (21); the smoke guide part (82) inclines towards the inside of the shell (1), and the inclination angle of the smoke guide part (82) of the baffle (8) positioned above is smaller than the inclination angle (alpha) of the smoke guide part (82) of the baffle (8) positioned below.
12. The range hood of claim 9, wherein: the baffle (8) is basically in a flat plate shape, the edge of the top end of the baffle is connected with the edge of the top of the through hole (20), the baffle (8) is curled upwards after the temperature of the baffle rises to a phase change state temperature value, and the cross section of the curled baffle (8) is in an involute spiral line structure.
13. The range hood of claim 7, wherein: the smoke baffle (2) is basically in a flat plate shape, the edge of the top end of the smoke baffle is connected with the edge of the top of the smoke inlet (110), and the smoke baffle (2) protrudes outwards to form an arc-shaped plate after the temperature of the smoke baffle rises to a phase-change state temperature value so as to open the smoke inlet (110).
14. The range hood of any one of claims 1 to 13, wherein: the shell (1) comprises a fume collecting hood (11) and a fan hood (12) which is arranged above the fume collecting hood (11) and communicated with the fume collecting hood (11), and the fume inlet (110) is positioned on the fume collecting hood (11); the air conditioner also comprises a fan (5), wherein a front side air inlet channel (51) and a rear side air inlet channel (52) are respectively formed on the front side and the rear side of the fan (5), and the fan (5) is arranged in the fan cover (12) in a manner of moving back and forth; the fan is characterized by further comprising a driving mechanism (6), wherein the output end of the driving mechanism is connected with the fan (5) to drive the fan (5) to move.
15. The range hood of claim 14, wherein: the driving mechanism (6) comprises a motor (61) arranged in the fan cover (1), a screw rod (62) connected with an output shaft of the motor (61), and a sliding block (63) sleeved on the screw rod (62) and in threaded connection with the screw rod (62), wherein the sliding block (63) is connected with a shell of the fan (5).
16. A method of operating a range hood as claimed in any one of claims 1 to 15, comprising the steps of: firstly, the environmental temperature or the heating smoke baffle plate (2) is utilized to enable the smoke baffle plate (2) to reach or exceed the phase-change temperature and deform so as to open the smoke inlet (110); then starting the range hood, and utilizing the heat generated in the range hood or heating the smoke baffle plate (2) to enable the temperature of the smoke baffle plate (2) to reach or exceed the phase-change temperature of the smoke baffle plate; and finally, the range hood is closed, the smoke baffle plate (2) is cooled to reduce the temperature, and the shape of the smoke baffle plate (2) is restored to close the smoke inlet (110).
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| CN202110018174.0A CN112856505B (en) | 2021-01-07 | 2021-01-07 | Range hood and working method thereof |
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| CN202110018174.0A CN112856505B (en) | 2021-01-07 | 2021-01-07 | Range hood and working method thereof |
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| CN112856505B CN112856505B (en) | 2022-03-18 |
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| US4646531A (en) * | 1984-12-10 | 1987-03-03 | Dae Woo Electronics Co., Ltd. | Refrigerator temperature control apparatus |
| JPS63204037A (en) * | 1987-02-20 | 1988-08-23 | Matsushita Electric Ind Co Ltd | Exhaust lid opening and closing device for cooker or the like |
| US5181528A (en) * | 1991-10-04 | 1993-01-26 | Industrial Technology Research Institute | Apparatus for extinguishing a lighted cigarette |
| CN104296217A (en) * | 2014-10-23 | 2015-01-21 | 吴江市江南不锈钢器材有限责任公司 | Intelligent metal hidden-type range hood |
| JP2016205656A (en) * | 2015-04-17 | 2016-12-08 | 株式会社佐原 | Ventilation device |
| CN108644846A (en) * | 2018-07-19 | 2018-10-12 | 安徽工程大学 | A kind of energy-efficient kitchen ventilator |
| CN110925834A (en) * | 2019-11-28 | 2020-03-27 | 海信(广东)厨卫系统有限公司 | Fume exhaust fan |
| CN211526520U (en) * | 2020-01-21 | 2020-09-18 | 佛山市顺德区金百利家用电器实业有限公司 | Multifunctional fume exhaust fan |
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2021
- 2021-01-07 CN CN202110018174.0A patent/CN112856505B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646531A (en) * | 1984-12-10 | 1987-03-03 | Dae Woo Electronics Co., Ltd. | Refrigerator temperature control apparatus |
| JPS63204037A (en) * | 1987-02-20 | 1988-08-23 | Matsushita Electric Ind Co Ltd | Exhaust lid opening and closing device for cooker or the like |
| US5181528A (en) * | 1991-10-04 | 1993-01-26 | Industrial Technology Research Institute | Apparatus for extinguishing a lighted cigarette |
| CN104296217A (en) * | 2014-10-23 | 2015-01-21 | 吴江市江南不锈钢器材有限责任公司 | Intelligent metal hidden-type range hood |
| JP2016205656A (en) * | 2015-04-17 | 2016-12-08 | 株式会社佐原 | Ventilation device |
| CN108644846A (en) * | 2018-07-19 | 2018-10-12 | 安徽工程大学 | A kind of energy-efficient kitchen ventilator |
| CN110925834A (en) * | 2019-11-28 | 2020-03-27 | 海信(广东)厨卫系统有限公司 | Fume exhaust fan |
| CN211526520U (en) * | 2020-01-21 | 2020-09-18 | 佛山市顺德区金百利家用电器实业有限公司 | Multifunctional fume exhaust fan |
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|---|---|
| CN112856505B (en) | 2022-03-18 |
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