CN112856509B - Range hood and control method thereof - Google Patents
Range hood and control method thereof Download PDFInfo
- Publication number
- CN112856509B CN112856509B CN202110020497.3A CN202110020497A CN112856509B CN 112856509 B CN112856509 B CN 112856509B CN 202110020497 A CN202110020497 A CN 202110020497A CN 112856509 B CN112856509 B CN 112856509B
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- fan
- range hood
- oil smoke
- smoke concentration
- driving device
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to a range hood, which comprises a casing, a fan and a fan, wherein the casing is provided with an air suction port; the fan is movably arranged in the shell; the driving device is arranged in the shell, and the power output end of the driving device is connected with the fan; the oil smoke concentration detection device is arranged on the machine shell and used for detecting the oil smoke concentration on the left side and the right side of the range hood; and the controller is in electrical signal connection with the driving device, the fan and the oil smoke concentration sensor, so that the driving device can be controlled to act according to the oil smoke concentrations of the left side and the right side of the range hood acquired by the oil smoke concentration detection device, and the fan is driven to move left and right in the shell. The range hood effectively solves the problem of oil smoke escape, ensures the maximum utilization of the fan and improves the oil smoke absorption effect. Also relates to a control method of the range hood.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a range hood and a control method of the range hood.
Background
The range usually has two cooking holes (burners), and the existing range hood also has a single air inlet range hood and a double air inlet range hood. Chinese patent application with application number CN201410673521.3 discloses a double air intake range hood, but in the actual use process, often only use a pan to cook, generally be equipped with two combustors on the top of a kitchen range, when only one combustor uses, two air intakes are opened simultaneously, can cause the wasting of resources. However, for a single-air-inlet range hood, because fans in the range hood are all fixedly arranged, under the use condition of a single cooking range, the situation that the concentration of oil smoke on one side is high and the concentration of oil smoke on one side is low, so that the concentration of oil smoke is unbalanced above a kitchen range usually occurs. This kind of range hood's fan position can't carry out dynamic adjustment according to the both sides oil smoke condition, and the left and right sides oil smoke concentration when range hood is different, can have the risk that the oil smoke escaped, at this moment, can only be through rising fan operation gear, just can guarantee the smoking effect, and the maximize that current range hood can't realize the fan performance is used, and the energy consumption is high.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a range hood which can move a fan to meet the requirement of the performance of the fan and can be used to the maximum extent when the oil smoke concentration difference occurs on the left side and the right side of the range hood aiming at the current situation of the prior art.
The second technical problem to be solved by the invention is to provide a control method of a range hood, which aims at the current situation of the prior art, has more comprehensive and accurate detection process and avoids the occurrence of smoke leakage caused by misjudgment or the additional execution of redundant operation of a fan.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a range hood, comprising:
a casing having an air inlet;
the fan is arranged in the shell;
the driving device is arranged in the shell, and the power output end of the driving device is connected with the fan;
the oil smoke concentration detection device is arranged on the machine shell and used for detecting the oil smoke concentration on the left side and the right side of an air suction opening of the range hood;
and the controller is in electrical signal connection with the driving device, the fan and the oil smoke concentration sensor, so that the driving device is controlled to act according to the oil smoke concentration values of the left side and the right side of the air suction opening of the range hood acquired by the oil smoke concentration detection device, and the fan is driven to move left and right in the shell.
In order to avoid the fan to appear unnecessary frequent movement adjustment problem to further improve range hood control process's rationality, still include:
the distance sensor is arranged in the shell, is in electrical signal connection with the controller and is used for detecting the distance between the fan and the left side wall or the right side wall of the shell;
and the temperature sensor is arranged at the position of the air suction opening of the range hood, is in electrical signal connection with the controller and is used for detecting the temperature of the smoke entering the air suction opening.
The driving device can adopt various power structures in the prior art, but is arranged in a shell of the range hood more conveniently and is matched with a fan structure, the driving device comprises a motor, a lead screw and a first sliding block, the end part of the lead screw is connected with the power output end of the motor and is arranged along the transverse extension of the shell, the first sliding block is rotationally connected with the lead screw through threads, and the fan is connected with the first sliding block.
In order to enable the fan to move more stably, a guide rail supporting component is arranged on the casing, and the fan is arranged on the guide rail supporting component in a transverse sliding mode.
The guide rail supporting assembly can be of various guide and supporting guide rail structures in the prior art, but in order to simplify the structure of the guide rail supporting assembly, reduce the production cost and ensure the stability of the transverse movement of the fan, the guide rail supporting assembly comprises a first guide rail and a second guide rail, the first guide rail corresponds to the bottom of the fan and is provided with a transversely extending guide groove, the fan is provided with a sliding part which can be slidably constrained in the guide groove, the second guide rail is a transversely arranged guide rod, the upper part of the fan is connected with a second sliding block, and the second sliding block is slidably arranged on the guide rod.
In order to avoid the collection petticoat pipe to cause the interference to the lateral shifting of fan, the bottom of casing is equipped with the collection petticoat pipe, and this collection petticoat pipe is including the flexible baffle that can fold on horizontal and expand, offer on the flexible baffle and be used for the air intake of fan corresponds the installing port of connecting.
As an improvement, the oil smoke concentration detection device comprises a first oil smoke concentration sensor arranged on the left side of the air suction opening of the machine shell and a second oil smoke concentration sensor arranged on the right side of the air suction opening of the machine shell. Preferably, the first oil smoke concentration sensor and the second oil smoke concentration sensor are infrared sensors.
The technical scheme adopted by the invention for solving the second technical problem is as follows: a control method of a range hood comprises the following steps:
s1, starting a fan;
s2, detecting the oil smoke concentrations on the left side and the right side of the range hood through an oil smoke concentration detection device, acquiring an oil smoke concentration detection value C1 on the left side of the range hood and an oil smoke concentration detection value C1 on the right side of the range hood, classifying oil smoke escape risks existing on the left side and the right side of the range hood according to the acquired detection values C1 and C2, then comparing the obtained oil smoke escape risk grades with preset risk grades, and further judging whether the oil smoke escape risks exist on the left side and the right side of the range hood;
if the oil smoke escape risk exists, controlling the fan to move leftwards or rightwards for a preset unit distance, and then returning to the step S2 until the oil smoke escape risk on the left side and the right side of the air inlet of the fan is eliminated; and if the oil smoke escape risk does not exist, controlling the fan to be kept at the original position, and then returning to the step S2.
As a modification, in the above-mentioned step of S2,
according to a detection value C1, judging the oil smoke escape risk level F1 of the smoke on the left side of the air inlet of the fan, wherein the larger the detection value C1 is, the larger the corresponding risk level F1 is, and comparing F1 with a preset risk level F0; and
according to a detection value C2, judging the oil smoke escape risk level F2 of the smoke on the right side of the air inlet of the fan, wherein the larger the detection value C2 is, the larger the corresponding risk level F2 is, and comparing F2 with a preset risk level F0;
if F1 is greater than F0 and F2 is less than or equal to F0, moving the fan leftwards by a preset unit distance;
if F1 is greater than F0 and F2 is greater than F0, the running gear of the fan is lifted;
if the F1 is less than or equal to F0 and the F2 is less than or equal to F0, keeping the position of the fan unchanged;
if F1 is less than or equal to F0 and F2 is more than F0, the fan is moved to the right by a preset unit distance.
The grading of the risk grade can be graded according to the experimental test result and the gradient, for example, the grading can be specifically classified into three grades, five grades, ten grades or more grades, and the higher the risk grade is, the more easily the smoke leakage problem occurs; in addition, the preset risk level F0 can be reasonably selected according to the performance of the range hood, so that the control process of the range hood is more reasonable.
As a modification, after the step of S1, before the step of S2, the method further includes the steps of:
s11, detecting the position of the fan relative to the casing through a distance sensor arranged in the casing, and acquiring the position of the fan.
In order to avoid the problem of frequent movement adjustment of the fan when the stove is not in use, thereby further improving the reasonability of the control process of the range hood, the method also comprises the following steps after the step S1 and before the step S11:
s10, detecting the temperature of the flue gas entering the position of the air suction inlet of the range hood through the temperature sensor, obtaining the temperature value T of the air flow, judging whether the temperature value T exceeds a preset temperature value T, if T is larger than T, carrying out the next step, and if T is smaller than or equal to T, continuously detecting the temperature of the flue gas through the temperature sensor.
Compared with the prior art, the invention has the advantages that: the oil smoke concentration detection device of the range hood detects the oil smoke concentration of the smoke on the left side and the right side of the range hood, and can control the driving device to act according to the detected oil smoke concentration on the left side and the right side of the range hood to drive the fan to move left and right in the casing, so that the oil smoke escape risk is eliminated. The oil smoke escape problem is effectively solved, the maximum utilization of the fan is guaranteed, and the oil smoke absorption effect is improved.
Drawings
Fig. 1 is a schematic perspective structure view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the range hood of the embodiment of the present invention without a front panel (the air inlet of the fan is approximately in the middle position);
fig. 3 is a schematic perspective view of the range hood of the embodiment of the present invention without a front panel (the air inlet of the blower is approximately at the left side position);
FIG. 4 is a schematic perspective view of the range hood of the embodiment of the present invention without relevant parts such as the housing;
FIG. 5 is a perspective view of the FIG. 4 in another angular position;
FIG. 6 is a vertical cross-sectional view of a range hood of an embodiment of the present invention;
fig. 7 is a flowchart of a control method of a range hood according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1 to 7, a range hood includes a cabinet 10, a fan 20, a driving device 30, a rail support assembly, a soot concentration detecting device, a distance sensor 50, a temperature sensor 60, and a controller (not shown). The fan 20, the driving device 30 and the guide rail supporting assembly are all disposed in the casing 10.
Referring to fig. 1, the casing 10 includes a fan bracket 15 and a box 11 connected to the bottom of the fan bracket 15, the front of the box 11 has a panel 110 with a transverse opening, the transverse opening forms an air suction opening 101 of the casing 10, and a smoke barrier 111 capable of opening and closing the transverse opening is further disposed on the upper edge of the panel 110.
Referring to fig. 1 and 6, the casing 10 has an air suction opening 101 (i.e., the above-mentioned lateral opening) on a panel 110 at the bottom, an air discharge opening 102, and a smoke exhaust passage (not shown) communicating the two, and the air discharge opening 102 is located at the top of the casing 10.
The fan 20 is movably disposed in the casing 10, and is specifically capable of moving in a transverse direction (left-right direction) of the casing 10 under the action of the driving device 30.
Referring to fig. 2 and 3, a smoke collecting hood 12 is further provided in the cabinet 11 at the bottom of the cabinet 10, and the smoke collecting hood 12 is opened toward the front panel 110. An air inlet 201 of the fan 20 is connected to the fume collecting hood 12. Specifically, the fume collecting hood 12 of the present embodiment includes a flexible flap 120 capable of being folded and unfolded in the lateral direction, wherein the length of the flexible flap 120 substantially coincides with the length of the lateral opening on the panel 110. The flexible baffle 120 is provided with a mounting opening 121 for correspondingly connecting with the air inlet 201 of the fan 20. In the process of the lateral movement of the fan 20, the flexible baffle 120 can be folded and unfolded under the driving of the fan 20, specifically, when the fan 20 moves to the left, a portion of the flexible baffle 120 corresponding to the left side of the air inlet 201 of the fan 20 is folded, and a portion of the flexible baffle 120 corresponding to the right side of the air inlet 201 of the fan 20 is unfolded relatively, so as to avoid the interference of the fume collecting hood 12 on the lateral movement of the fan 20, as shown in fig. 2 and 3 in detail.
Referring to fig. 4 and 5, the power output end of the driving device 30 is connected to the fan 20, so as to drive the fan 20 to move transversely. The driving device 30 of the present embodiment includes a motor 31, a lead screw 32, and a first slider 33. The lead screw 32 extends in the lateral direction of the housing 10. The end part of the screw rod is connected with the power output end of the motor 31 and can rotate around the axis of the screw rod positively and negatively under the driving of the motor 31. The first sliding block 33 is rotatably connected with the lead screw 32 through threads, and the fan 20 is connected with the first sliding block 33.
The guide rail support assembly can provide support for the fan 20 and make the lateral movement of the fan 20 more stable. The blower 20 is disposed on the rail support assembly and can move laterally relative to the cabinet 10.
Referring to fig. 4 and 5, the rail support assembly of the present embodiment includes a first rail 71 and a second rail 72. The first guide rail 71 corresponds to the bottom of the fan 20 and has a guide groove 710 extending transversely, and the fan 20 has a sliding portion 21 slidably constrained in the guide groove 710, specifically, the sliding portion 21 may be a sliding plate structure matching with the guide groove 710. The second guide rail 72 is a guide rod arranged transversely, the upper part of the fan 20 is connected with a second slide block 22, and the second slide block 22 is arranged on the guide rod in a sliding manner. Specifically, the air outlet position of fan 20 is all located to second slider 22 and first slider 33, specifically, and second slider 22 is located the front side position of the air outlet of fan 20, and first slider 33 is located the rear side position of the air outlet of fan 20.
Referring to fig. 5 and 6, an air outlet cover 13 is disposed at an air outlet of the fan 20, the outlet smoke cover 13 is connected to a flexible smoke tube 14 with a length that is adjustable, and a port of the flexible smoke tube 14 extends to the position of the air outlet 102 of the casing 10. The flexible smoke tube 14 is used to facilitate the lateral movement of the fan 20 and avoid interference.
Referring to fig. 2, the oil smoke concentration detection apparatus of the present embodiment includes a first oil smoke concentration sensor 41 located on the left side of the range hood and a second oil smoke concentration sensor 42 located on the right side of the range hood, which are respectively used for detecting the oil smoke concentrations on the left side and the right side of the suction inlet of the range hood. The first soot concentration sensor 41 and the second soot concentration sensor 42 of the present embodiment may both employ infrared sensors.
Referring to fig. 2 and 3, the distance sensor 50 is disposed in the casing 10 and configured to detect a distance between the fan 20 and a left side wall or a right side wall of the casing 10, so as to obtain a position of the fan 20 in the casing 10 during movement in real time. The distance sensor 50 may be disposed on the inner wall of the left or right side of the box 11 of the casing 10, or may be disposed on the fan 20.
Referring to fig. 2 and 3, the temperature sensor 60 is disposed at the position of the air suction opening 101 of the range hood, and is configured to detect the temperature of the flue gas entering the air suction opening 101.
The driving device 30, the fan 20, the first oil smoke concentration sensor 41, the second oil smoke concentration sensor 42, the distance sensor 50 and the temperature sensor 60 are all electrically connected to a controller (i.e. a control system) of the range hood.
Referring to fig. 7, a control method of a range hood includes the following steps:
and S1, starting the fan 20.
S10, detecting the temperature of the flue gas entering the position of the air suction opening 101 of the range hood through the temperature sensor 60, obtaining the temperature value T of the air flow, judging whether the temperature value T exceeds a preset temperature value T, and if T is larger than T, carrying out the next step, starting the driving device of the fan to be in a standby state; if T is less than or equal to T, the temperature of the flue gas is continuously detected through the temperature sensor 60. The step S10 is set to avoid frequent movement and adjustment of the fan 20 when the stove is not in use, so as to further improve the reasonability of the control process of the range hood.
And S11, detecting the position of the fan 20 in the casing 10 of the range hood relative to the casing 10 through the distance sensor 50, and acquiring the position of the fan 20.
S2, detecting the oil smoke concentration on the left side of the air inlet 201 of the fan 20 by the first oil smoke concentration sensor 41, obtaining a detection value C1, and determining an oil smoke escape risk level F1 of the left side flue gas of the range hood according to the detection value C1, wherein the larger the detection value C1 is, the larger the corresponding risk level F1 is, and comparing the F1 with a preset risk level F0.
The oil smoke concentration on the right side of the air inlet 201 of the fan 20 is detected by the second oil smoke concentration sensor 42, a detection value C2 is obtained, the oil smoke escape risk level F2 of the smoke on the right side of the air inlet 201 of the fan 20 is determined according to the detection value C2, wherein the larger the detection value C2 is, the larger the corresponding risk level F2 is, and the F2 is compared with the preset risk level F0.
The steps of determining whether the left side and the right side of the air inlet 201 of the fan 20 have the oil smoke escape risk are as follows:
if F1 is greater than F0 and F2 is less than or equal to F0, moving the fan 20 leftwards by a preset unit distance through the driving device, then returning to the step S11, and continuing to detect until the oil smoke escape risks on the left side and the right side of the range hood are eliminated;
if F1 is greater than F0 and F2 is greater than F0, the operation gear of the fan 20 is lifted, then the step S11 is returned, and the detection is continued until the risk of oil smoke escape on the left side and the right side of the range hood is eliminated.
If F1 is not more than F0 and F2 is more than F0, moving the fan 20 to the right by a preset unit distance through the driving device, then returning to the step S11, and continuing to detect until the oil smoke escape risks on the left side and the right side of the range hood are eliminated;
the three conditions belong to the condition that the left side or the right side of the range hood has oil smoke escape risks, and correspondingly adjusted actions are performed.
If F1 ≦ F0 and F2 ≦ F0, the position of the fan 20 is maintained, and then the process returns to S11.
The above conditions belong to the condition that the left side and the right side of the range hood do not have the oil smoke escape risk, corresponding action adjustment is not needed, and the current position situation is unchanged.
The grading of the oil smoke escape risk level can be graded according to the experimental test result in a gradient manner, for example, the grading can be divided into three grades, five grades, ten grades or more, and the higher the oil smoke escape risk level is, the more easily the problem of smoke leakage occurs; in addition, the preset risk level F0 can be reasonably selected according to the performance of the range hood, so that the control process of the range hood is more reasonable.
The control method of the range hood comprises the steps of detecting the oil smoke concentration of the entering smoke on the left side and the right side of the range hood through a first oil smoke concentration sensor 41 and a second oil smoke concentration sensor 42 which are correspondingly arranged on the left side and the right side of the range hood, further judging the oil smoke escape risk grade on the left side and the right side of the range hood according to the detected oil smoke concentration, then comparing the oil smoke escape risk grade on the left side of the range hood and the oil smoke escape risk grade on the right side of an air inlet 201 of a fan 20 with a preset oil smoke escape risk grade, controlling the fan 20 to move leftwards or rightwards by a preset unit distance or improving the operation gear of the fan 20 according to the comparison result, further eliminating the oil smoke escape risk, solving the oil smoke escape problem, improving the oil smoke absorption effect, leading the control process of the control method of the range hood to be more comprehensive and accurate, avoiding the phenomenon of smoke leakage caused by misjudgment or extra operation of moving the fan 20, the intelligent and efficient oil smoke suction purpose is achieved.
Claims (10)
1. A range hood, comprising:
a casing (10) having an air inlet (101);
it is characterized by also comprising:
the fan (20) is movably arranged in the shell (10);
the driving device (30) is arranged in the shell (10), and the power output end of the driving device is connected with the fan (20);
the oil smoke concentration detection device is arranged on the machine shell (10) and is used for detecting the oil smoke concentration on the left side and the right side of an air suction opening (101) of the range hood;
the controller is in electrical signal connection with the driving device (30), the fan (20) and the oil smoke concentration detection device, so that the driving device can be controlled to act according to the oil smoke concentration values of the left side and the right side of the air suction opening (101) of the range hood acquired by the oil smoke concentration detection device, and the fan (20) is driven to move left and right in the shell (10);
the bottom of casing (10) is equipped with collection petticoat pipe (12), and this collection petticoat pipe (12) are including flexible baffle (120) that can fold on horizontal and expand, offer on flexible baffle (120) and be used for air intake (201) of fan (20) correspond installing port (121) of connecting.
2. The range hood of claim 1, further comprising:
the distance sensor (50) is arranged in the shell (10), is in electrical signal connection with the controller and is used for detecting the distance between the fan (20) and the left side wall or the right side wall of the shell (10);
and the temperature sensor (60) is arranged at the position of the air suction opening (101) of the range hood, is electrically connected with the controller and is used for detecting the temperature of the smoke entering the air suction opening (101).
3. The range hood of claim 2, wherein: drive arrangement (30) include motor (31), lead screw (32) and first slider (33), the tip of lead screw (32) with the power take off end of motor (31) links to each other, and follows the horizontal extension setting of casing (10), first slider (33) through the screw thread with lead screw (32) rotate and are connected, fan (20) with first slider (33) are connected.
4. The range hood of claim 3, wherein: the fan is characterized in that a guide rail supporting component is arranged on the casing (10), and the fan (20) is arranged on the guide rail supporting component in a transverse sliding mode.
5. The range hood of claim 4, wherein: the guide rail supporting assembly comprises a first guide rail (71) and a second guide rail (72), the first guide rail (71) corresponds to the bottom of the fan (20) and is provided with a guide groove (710) extending transversely, the fan (20) is provided with a sliding part (21) capable of being constrained in the guide groove (710) in a sliding mode, the second guide rail (72) is a guide rod arranged transversely, the upper part of the fan (20) is connected with a second sliding block (22), and the second sliding block (22) is arranged on the guide rod in a sliding mode.
6. The range hood of claim 1, wherein: the oil smoke concentration detection device comprises a first oil smoke concentration sensor (41) arranged on the left side of an air suction opening of the machine shell (10) and a second oil smoke concentration sensor (42) arranged on the right side of the air suction opening of the machine shell (10).
7. A control method using the range hood as claimed in any one of claims 1 to 6, characterized by comprising the steps of:
s1, starting a fan (20);
s2, detecting the oil smoke concentrations on the left side and the right side of the range hood through an oil smoke concentration detection device, acquiring an oil smoke concentration detection value C1 on the left side of the range hood and an oil smoke concentration detection value C1 on the right side of the range hood, classifying oil smoke escape risks existing on the left side and the right side of the range hood according to the acquired detection values C1 and C2, then comparing the obtained oil smoke escape risk grades with preset risk grades, and further judging whether the oil smoke escape risks exist on the left side and the right side of the range hood;
if the oil smoke escape risk exists, the fan (20) is controlled to move leftwards or rightwards for a preset unit distance until the oil smoke escape risk on the left side and the right side of the range hood is eliminated; and if the oil smoke escape risk does not exist, controlling the fan (20) to keep the original position.
8. The control method of the range hood according to claim 7, characterized in that: in the above-mentioned step of S2,
according to a detection value C1, determining an oil smoke escape risk grade F1 of smoke gas on the left side of the range hood, wherein the larger the detection value C1 is, the larger the corresponding risk grade F1 is, and comparing F1 with a preset risk grade F0; and
according to a detection value C2, determining an oil smoke escape risk grade F2 of the right smoke of the range hood, wherein the larger the detection value C2 is, the larger the corresponding risk grade F2 is, and comparing F2 with a preset risk grade F0;
if F1 is more than F0 and F2 is less than or equal to F0, driving the fan (20) to move leftwards by a preset unit distance through the driving device (30);
if F1 is larger than F0 and F2 is larger than F0, the operation gear of the fan (20) is lifted;
if F1 is less than or equal to F0 and F2 is less than or equal to F0, the position of the fan (20) is kept unchanged;
if F1 is less than or equal to F0 and F2 is more than F0, the fan (20) is driven by the driving device (30) to move rightwards by a preset unit distance.
9. The control method of the range hood according to claim 8, characterized in that: after the step of S1, before the step of S2, the method further comprises the steps of:
and S11, detecting the position of the fan (20) relative to the casing (10) through a distance sensor (50) arranged in the casing, and acquiring the position of the fan (20).
10. The control method of the range hood according to claim 9, characterized in that: after the step of S1, before the step of S11, the method further comprises the steps of:
s10, detecting the temperature of the flue gas entering the air suction opening (101) of the range hood through the temperature sensor (60) correspondingly arranged at the position of the air suction opening (101) of the range hood, obtaining the temperature value T of the air flow, judging whether the temperature value T exceeds a preset temperature value T, if T is larger than T, carrying out the next step, and if T is smaller than or equal to T, continuously detecting the temperature of the flue gas through the temperature sensor (60).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110020497.3A CN112856509B (en) | 2021-01-07 | 2021-01-07 | Range hood and control method thereof |
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|---|---|---|---|
| CN202110020497.3A CN112856509B (en) | 2021-01-07 | 2021-01-07 | Range hood and control method thereof |
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| CN112856509A CN112856509A (en) | 2021-05-28 |
| CN112856509B true CN112856509B (en) | 2022-05-17 |
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| CN114811690A (en) * | 2022-04-28 | 2022-07-29 | 海信(山东)厨卫有限公司 | Range hood and control method thereof |
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| CN111380098A (en) * | 2020-04-30 | 2020-07-07 | 程恩串 | Range hood and cleaning method in opening control and closing processes |
| CN111852947A (en) * | 2020-06-28 | 2020-10-30 | 宁波方太厨具有限公司 | Air inlet ring assembly, fan system and range hood |
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