Fan system and control method of range hood

Abstract

The present disclosure provides a fan system and a control method of a range hood, wherein the fan system of the range hood comprises: a centrifugal fan and a cross-flow fan; the cross-flow fan is arranged at the bottom of the range hood close to the cooking appliance; the centrifugal fan is arranged at the top of the range hood; the cross-flow fan is used for collecting oil fume at the bottom of the range hood; and the centrifugal fan is used for collecting oil fume at the top of the range hood. The present disclosure increases the cross-flow fan at the bottom of the range hood, i.e. close to the cooking appliance, to ensure uniform suction speed of the range hood, increase the overall oil fume suction effect of the range hood, and the structure of the multiple fans can also reduce the size or the rotation speed of the centrifugal fan of the range hood, thereby reducing the noise of the range hood.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of kitchen appliances, in particular to a fan system of a range hood and a control method. BACKGROUND

[0002] The range hood in the current market mainly meets the design requirements of double burners, but with the popularity of kitchen small household appliances, the use of movable small household appliances such as induction cookers and electric steamers has also gradually increased. The existing double-burner range hood cannot well collect the steam, oil fumes and the like generated by these small household appliances. The existing range hood and burner position relationship and range hood working principle are shown in Figure 1 and Figure 2 . As shown in Figure 1 , for the position relationship between the range hood and the burner: the burner 102 is located below the front suction port of the range hood 101, and the two burners 102 almost occupy the entire air inlet. As shown in Figure 2 , for the working principle of the range hood: under the action of the fan, the airflow flows, a relatively fast airflow and negative pressure are generated at the air inlet, and the airflow above the burner flows, as shown by the arrows in Figure 2 , the oil fume or steam enters the range hood with the airflow through the air inlet and is discharged under the action of the fan. The size of the air inlet determines the size and range of the airflow above the burner, and the farther away from the air inlet, the smaller the airflow speed, and the less likely the oil fume and steam are sucked in. SUMMARY

[0003] The technical problem to be solved by the present disclosure is to overcome the defect that the oil fume outside the air inlet of the range hood cannot be well collected in the prior art, and to provide a fan system of a range hood and a control method.

[0004] The present disclosure solves the above technical problems by the following technical solutions:

[0005] The present disclosure provides a fan system of a range hood, which comprises: a centrifugal fan and a cross-flow fan.

[0006] The cross-flow fan is arranged at the bottom of the range hood close to the burner, and the centrifugal fan is arranged at the top of the range hood.

[0007] The cross-flow fan is used to collect the oil fume at the bottom of the range hood, and the centrifugal fan is used to collect the oil fume at the top of the range hood.

[0008] The present disclosure further provides a control method of a range hood, which comprises the fan system of the range hood described above, and the control method of the range hood comprises:

[0009] Obtaining the inlet airflow and the outlet airflow at the bottom of the range hood;

[0010] adjust or maintain the current rotating speed of the fan system according to the inlet flow and the outlet flow, so as to balance the performance of the cross-flow fan and the centrifugal fan in the fan system.

[0011] Preferably, the step of adjusting or maintaining the current rotating speed of the fan system according to the inlet flow and the outlet flow comprises:

[0012] when the inlet flow is greater than the preset inlet flow, reducing the rotating speed of the cross-flow fan;

[0013] and / or,

[0014] when the inlet flow is less than the preset inlet flow, increasing the rotating speed of the cross-flow fan;

[0015] and / or,

[0016] when the inlet flow is equal to the preset inlet flow and the outlet flow is greater than the preset outlet flow, reducing the rotating speed of the centrifugal fan and increasing the rotating speed of the cross-flow fan;

[0017] and / or,

[0018] when the inlet flow is equal to the preset inlet flow and the outlet flow is less than the preset outlet flow, increasing the rotating speed of the centrifugal fan and reducing the rotating speed of the cross-flow fan;

[0019] and / or,

[0020] when the inlet flow is equal to the preset inlet flow and the outlet flow is equal to the preset outlet flow, maintaining the current rotating speed of the centrifugal fan and the cross-flow fan.

[0021] The present disclosure also provides a fan system of an extractor hood, comprising: a centrifugal fan, a first cross-flow fan and a second cross-flow fan.

[0022] The first cross-flow fan and the second cross-flow fan are arranged at the bottom of the extractor hood close to the cookers; the first cross-flow fan is arranged corresponding to the position of one side of the cookers; the second cross-flow fan is arranged corresponding to the position of the other side of the cookers; and the centrifugal fan is arranged at the top of the extractor hood.

[0023] The first cross-flow fan is used to collect the oil fume of one side of the cookers; the second cross-flow fan is used to collect the oil fume of the other side of the cookers; and the centrifugal fan is used to collect the oil fume at the top of the extractor hood.

[0024] The present disclosure also provides a control method of an extractor hood, wherein the extractor hood comprises a fan system of an extractor hood as described above, and the control method of the extractor hood comprises:

[0025] determining a running state of the first cross-flow fan and the second cross-flow fan;

[0026] when the first cross-flow fan or the second cross-flow fan is in the running state, obtaining a first inlet air flow and a first outlet air flow of the range hood bottom;

[0027] adjusting or maintaining a current rotating speed of the fan system according to the first inlet air flow and the first outlet air flow, so as to balance the performance of the fan system when the fan system is running.

[0028] Preferably, the step of determining the running state of the first cross-flow fan and the second cross-flow fan further comprises:

[0029] when the first cross-flow fan and the second cross-flow fan are in the running state, obtaining a second inlet air flow and a second outlet air flow of the range hood bottom;

[0030] adjusting or maintaining a current rotating speed of the fan system according to the second inlet air flow and the second outlet air flow, so as to balance the performance of the fan system when the fan system is running.

[0031] Preferably, the step of adjusting or maintaining the current rotating speed of the fan system according to the first inlet air flow and the first outlet air flow comprises:

[0032] when the first inlet air flow is greater than a first preset inlet air flow, reducing the rotating speed of the cross-flow fan in the running state;

[0033] and / or,

[0034] when the first inlet air flow is less than the first preset inlet air flow, increasing the rotating speed of the cross-flow fan in the running state;

[0035] and / or,

[0036] when the first inlet air flow is equal to the first preset inlet air flow, and the first outlet air flow is greater than a first preset outlet air flow, reducing the rotating speed of the centrifugal fan while increasing the rotating speed of the cross-flow fan in the running state;

[0037] and / or,

[0038] when the first inlet air flow is equal to the first preset inlet air flow, and the first outlet air flow is less than the first preset outlet air flow, increasing the rotating speed of the centrifugal fan while reducing the rotating speed of the cross-flow fan in the running state;

[0039] and / or,

[0040] when the first air inlet flow rate is equal to the first preset air inlet flow rate and the first air outlet flow rate is equal to the first preset air outlet flow rate, maintaining the current rotating speed of the centrifugal fan and the cross-flow fan in the running state.

[0041] Preferably, the step of adjusting or maintaining the current rotating speed of the fan system according to the second air inlet flow rate and the second air outlet flow rate comprises:

[0042] when the second air inlet flow rate is greater than the second preset air inlet flow rate, reducing the rotating speed of the first cross-flow fan and the second cross-flow fan;

[0043] and / or,

[0044] when the second air inlet flow rate is less than the second preset air inlet flow rate, increasing the rotating speed of the first cross-flow fan and the second cross-flow fan;

[0045] and / or,

[0046] when the second air inlet flow rate is equal to the second preset air inlet flow rate and the second air outlet flow rate is greater than the second preset air outlet flow rate, reducing the rotating speed of the centrifugal fan while increasing the rotating speed of the first cross-flow fan and the second cross-flow fan;

[0047] and / or,

[0048] when the second air inlet flow rate is equal to the second preset air inlet flow rate and the second air outlet flow rate is less than the second preset air outlet flow rate, increasing the rotating speed of the centrifugal fan while reducing the rotating speed of the first cross-flow fan and the second cross-flow fan;

[0049] and / or,

[0050] when the second air inlet flow rate is equal to the second preset air inlet flow rate and the second air outlet flow rate is equal to the second preset air outlet flow rate, maintaining the current rotating speed of the centrifugal fan, the first cross-flow fan and the second cross-flow fan.

[0051] The present disclosure also provides a computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the control method of the range hood as described above.

[0052] The present disclosure also provides a computer program product comprising a computer program, which, when executed by a processor, implements the control method of the range hood as described above.

[0053] On the basis of common general knowledge in the art, the above-mentioned preferred conditions can be combined in any manner to obtain various preferred examples of the present disclosure.

[0054] The positive progress effect of the present disclosure is that:

[0055] The present disclosure adds a cross-flow fan at the bottom of the range hood, i.e. close to the cooking appliance side, to ensure uniform speed of the range hood suction port, increase the overall oil fume suction effect of the range hood, and the structure of multiple fans can also reduce the size or speed of the centrifugal fan of the range hood, thereby reducing the noise of the range hood. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 A first structural schematic diagram of a fan system of a range hood in the prior art;

[0057] Figure 2 A second structural schematic diagram of a fan system of a range hood in the prior art;

[0058] Figure 3 A structural schematic diagram of a fan system of a range hood according to Embodiment 1 of the present disclosure;

[0059] Figure 4 A product structural schematic diagram of a fan system of a range hood according to Embodiment 1 of the present disclosure;

[0060] Figure 5 A third structural schematic diagram of a fan system of a range hood in the prior art;

[0061] Figure 6 A performance curve of a fan system of a range hood according to Embodiment 1 of the present disclosure.

[0062] Figure 7 A flowchart of a control method of a range hood according to Embodiment 2 of the present disclosure;

[0063] Figure 8 A flowchart of a specific example of a control method of a range hood according to Embodiment 2 of the present disclosure;

[0064] Figure 9 A structural schematic diagram of a fan system of a range hood according to Embodiment 3 of the present disclosure;

[0065] Figure 10 A product structural schematic diagram of a fan system of a range hood according to Embodiment 3 of the present disclosure;

[0066] Figure 11 A performance curve of a fan system of a range hood according to Embodiment 3 of the present disclosure.

[0067] Figure 12 A flowchart of a control method of a range hood according to Embodiment 4 of the present disclosure;

[0068] Figure 13 A first flowchart of a specific example of a control method of a range hood according to Embodiment 4 of the present disclosure;

[0069] Figure 14A second flow chart of a specific example of a control method of a range hood according to Embodiment 4 of the present disclosure. DETAILED DESCRIPTION

[0070] The present disclosure is further illustrated by way of examples below, but the present disclosure is not limited to the examples described.

[0071] The prefix words such as "first", "second" in the embodiments of the present disclosure are merely used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of ordinal words such as ordinal words in the embodiments of the present disclosure does not constitute a limitation on the described objects, and the description of the described objects should be seen in the context of the claims or embodiments, and should not constitute an unnecessary limitation because of the use of such prefix words. In addition, in the description of the embodiments, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0072] Embodiment 1

[0073] The present embodiment provides a fan system of a range hood, referring to Figure 3 , the present embodiment provides a double fan system, which is a series-parallel system, and the fan system of the range hood comprises: a centrifugal fan 1 and a cross-flow fan 2.

[0074] The cross-flow fan 2 is arranged at the bottom of the range hood close to the cooking appliance. The centrifugal fan 1 is arranged at the top of the range hood.

[0075] The cross-flow fan 2 is used to collect the oil fume at the bottom of the range hood. The centrifugal fan 1 is used to collect the oil fume at the top of the range hood.

[0076] Referring to Figure 4 , on the inner side wall of the range hood, one side has a bearing cooperating with the cross-flow fan 2, and the other side has a motor cooperating with the other side of the cross-flow fan 2. Therefore, the range hood of the present embodiment is a range hood with side suction and top suction functions.

[0077] Figure 5 For the fan system of the existing range hood, it can be seen that the fan system only includes the centrifugal fan 1. Compared with Figure 5 , the double fan structure of the present embodiment (see Figure 3 ) can effectively reduce the speed of the centrifugal fan under the premise of unchanged performance, thereby reducing the noise.

[0078] It should be noted that Figure 3 and Figure 5 the arrows indicate the direction of the wind.

[0079] The principle is briefly introduced as follows:

[0080] Referring to Figure 5 andFigure 3 , respectively, the overall resistance at the parallel connection is regarded as P 12 and P 12 , the pressure rise provided by the existing fan is ΔP, and the pressure rise provided by the fan of the embodiment is ΔP'. The two systems satisfy:

[0081] ΔP = P - P 12 - P3;

[0082] Wherein, ΔP is used to represent the pressure rise provided by the existing fan; P is used to represent the pressure provided by the existing centrifugal fan; P 12 is used to represent the overall resistance at the parallel connection of the existing range hood; and P3 is used to represent the resistance at the centrifugal fan of the existing range hood.

[0083] ΔP' = P' - P' 12 - P3;

[0084] Wherein, ΔP' is used to represent the pressure rise provided by the fan of the embodiment; P' is used to represent the pressure provided by the centrifugal fan of the embodiment; P 12 ' is used to represent the overall resistance at the parallel connection of the range hood of the embodiment; and P3 is used to represent the resistance at the centrifugal fan of the embodiment.

[0085] In the case of ΔP = ΔP', P12' is less than P12 due to the action of the cross-flow fan. The pressure rise required to be provided by the existing centrifugal fan is less than that of the centrifugal fan of the embodiment, so the rotational speed of the centrifugal fan of the embodiment is less than that of the existing centrifugal fan. Therefore, the noise of the range hood fan system of the embodiment is less than that of the existing range hood.

[0086] Figure 6 is the relationship between the performance curves required to be satisfied by the centrifugal fan and the cross-flow fan of the embodiment. Figure 6 The abscissa represents Airflow Q (airflow), and the ordinate represents Fan Pressure P (fan pressure). L1 is used to represent the fan performance curve of the cross-flow fan, L3 is used to represent the performance curve of the centrifugal fan, and L0 is used to represent the performance curve after the two fans are connected in series and parallel. From Figure 6 it can be seen that the cross-flow fan and the centrifugal fan need to be matched when the range hood is working, and the matching process is a dynamic adjustment process.

[0087] The embodiment increases the cross-flow fan at the bottom of the range hood, i.e. near the stove side, to ensure uniform suction speed of the range hood, increase the overall oil fume suction effect of the range hood, solve the problem of oil fume suction and steam suction of multiple smoke sources, and the structure of multiple fans can also reduce the size or rotational speed of the centrifugal fan of the range hood, block the noise of the centrifugal fan from spreading to the outside space through the outlet of the range hood, and thus reduce the noise of the range hood.

[0088] Embodiment 2

[0089] The embodiment provides a control method of an extractor hood, the extractor hood comprising a fan system of the extractor hood of the embodiment 1, referring to Figure 7 , the control method of the extractor hood comprising:

[0090] S1, obtaining an inlet flow rate and an outlet flow rate of the extractor hood.

[0091] S2, adjusting or maintaining a current rotating speed of the fan system according to the inlet flow rate and the outlet flow rate, so as to balance the performance of the cross-flow fan and the centrifugal fan in the fan system.

[0092] In an optional implementation, the step S2 comprises:

[0093] S21, when the inlet flow rate is greater than a preset inlet flow rate, reducing the rotating speed of the cross-flow fan.

[0094] In an optional implementation, the step S2 comprises:

[0095] S22, when the inlet flow rate is less than the preset inlet flow rate, increasing the rotating speed of the cross-flow fan.

[0096] In an optional implementation, the step S2 comprises:

[0097] S23, when the inlet flow rate is equal to the preset inlet flow rate and the outlet flow rate is greater than a preset outlet flow rate, reducing the rotating speed of the centrifugal fan and increasing the rotating speed of the cross-flow fan.

[0098] In an optional implementation, the step S2 comprises:

[0099] S24, when the inlet flow rate is equal to the preset inlet flow rate and the outlet flow rate is less than the preset outlet flow rate, increasing the rotating speed of the centrifugal fan and reducing the rotating speed of the cross-flow fan.

[0100] In an optional implementation, the step S2 comprises:

[0101] S25, when the inlet flow rate is equal to the preset inlet flow rate and the outlet flow rate is equal to the preset outlet flow rate, maintaining the current rotating speed of the centrifugal fan and the cross-flow fan.

[0102] The embodiment balances the performance of the cross-flow fan and the centrifugal fan in the fan system by adjusting or maintaining the current rotating speed of the fan system, so as to reduce the rotating speed of the centrifugal fan and reduce the noise of the extractor hood while ensuring the oil fume extraction effect of the extractor hood.

[0103] A specific example is introduced below to introduce the control method of the extractor hood of the embodiment in detail, Figure 8 The working flow of the specific example is as follows:

[0104] S801, start the range hood, and adjust the wind speed of the cross-flow fan and the centrifugal fan to the low gear.

[0105] S802, the cross-flow fan and the centrifugal fan work at the preset rotating speed.

[0106] The preset rotating speed is set according to the actual situation.

[0107] S803, real-time detection of the flow rate Q1 of the lower inlet and the flow rate Q of the outlet.

[0108] S804, determine whether Q1 is equal to the preset inlet flow rate Q1', if Q1 is equal to Q1', execute step S805; if Q1 is not equal to Q1', execute step S809.

[0109] The preset inlet flow rate is set according to the actual situation.

[0110] S805, determine whether Q is equal to the preset outlet flow rate Q', if Q is equal to Q', execute step S806; if Q is not equal to Q', execute step S812.

[0111] The preset outlet flow rate is set according to the actual situation.

[0112] S806, maintain the current state.

[0113] S807, detect that the gear of the range hood changes, i.e., the user adjusts the gear or the range hood automatically shifts gears, and return to step S802.

[0114] It should be noted that when adjusting to other gears, the flow detection value and the preset value will change accordingly.

[0115] S808, turn off the range hood.

[0116] S809, determine the size of Q1 and Q1', if Q1 is greater than Q1', execute step S810; if Q1 is less than Q1', execute step S811.

[0117] S810, reduce the rotating speed of the cross-flow fan, and return to step S803.

[0118] S811, increase the rotating speed of the cross-flow fan, and return to step S803.

[0119] S812, determine the size of Q and Q', if Q is greater than Q', execute step S813; if Q is less than Q', execute step S814.

[0120] S813, reduce the rotating speed of the centrifugal fan and increase the rotating speed of the cross-flow fan, and return to step S803.

[0121] S814, increase the rotating speed of the centrifugal fan and decrease the rotating speed of the cross-flow fan, and return to step S803.

[0122] It should be noted that Q1 is used to represent the real-time detected inlet flow of the cross-flow fan side suction port under low-grade wind speed flow; Q1' is used to represent the theoretical preset inlet flow of the cross-flow fan side suction port under low-grade wind speed flow; Q is used to represent the real-time detected outlet flow under low-grade wind speed flow; and Q' is used to represent the theoretical preset outlet flow under low-grade wind speed flow.

[0123] Embodiment 3

[0124] This embodiment provides a fan system of a range hood. Referring to Figure 9 , the fan system of the range hood comprises a centrifugal fan 1, a first cross-flow fan 21 and a second cross-flow fan 22.

[0125] The first cross-flow fan 21 and the second cross-flow fan 22 are arranged at the bottom of the range hood close to the cookers. The first cross-flow fan 21 is arranged corresponding to the position of one side of the cookers. The second cross-flow fan 22 is arranged corresponding to the position of the other side of the cookers. The centrifugal fan 1 is arranged at the top of the range hood.

[0126] The first cross-flow fan 21 is used to collect oil fume of one side of the cookers. The second cross-flow fan 22 is used to collect oil fume of the other side of the cookers. The centrifugal fan 1 is used to collect oil fume at the top of the range hood.

[0127] Figure 10 As shown in the figure, in this embodiment, some use scenarios are only single smoke source, and do not need all suction ports to uniformly suck air, but only need a part of them. In order to fully improve the utilization rate of the lower suction port, the cross-flow fan at the lower suction port can be divided into left and right two. When only one side of the cookers works, only the cross-flow fan corresponding to the side is started. Compared with one cross-flow fan, a structure part for fixing rotation of the cross-flow fan needs to be added in the middle position of the air duct. At this time, the centrifugal fan matches the appropriate rotating speed according to the start of the single-side cross-flow fan.

[0128] Figure 11 The relationship between the performance curves to be met by the centrifugal fan and the two cross-flow fans in this embodiment.

[0129] Figure 11 The abscissa represents Airflow Q (airflow), and the ordinate represents Fan Pressure P (fan pressure). L11 is used to represent the fan performance curve of the first cross-flow fan, L12 is used to represent the fan performance curve of the second cross-flow fan, L3 is used to represent the centrifugal fan performance curve, and L0 is used to represent the performance curve of the three fans in series and parallel in this embodiment.

[0130] Embodiment 4

[0131] The embodiment provides a control method of an extractor hood, the extractor hood comprising a fan system of the extractor hood of the embodiment 3, referring to Figure 12 The control method of the extractor hood comprises the following steps.

[0132] S1201, determining running states of the first cross-flow fan and the second cross-flow fan.

[0133] S12021, when the first cross-flow fan or the second cross-flow fan is in the running state, acquiring a first inlet airflow and a first outlet airflow of a bottom of the extractor hood.

[0134] S12031, adjusting or maintaining a current rotating speed of the fan system according to the first inlet airflow and the first outlet airflow, so as to balance performance of the fan system when the fan system is running.

[0135] In an optional implementation, the step S12031 comprises:

[0136] When the first inlet airflow is greater than a first preset inlet airflow, the rotating speed of the cross-flow fan in the running state is reduced.

[0137] In an optional implementation, the step S12031 comprises:

[0138] When the first inlet airflow is less than the first preset inlet airflow, the rotating speed of the cross-flow fan in the running state is increased.

[0139] In an optional implementation, the step S12031 comprises:

[0140] When the first inlet airflow is equal to the first preset inlet airflow, and the first outlet airflow is greater than a first preset outlet airflow, the rotating speed of the centrifugal fan is reduced and the rotating speed of the cross-flow fan in the running state is increased.

[0141] In an optional implementation, the step S12031 comprises:

[0142] When the first inlet airflow is equal to the first preset inlet airflow, and the first outlet airflow is less than the first preset outlet airflow, the rotating speed of the centrifugal fan is increased and the rotating speed of the cross-flow fan in the running state is reduced.

[0143] In an optional implementation, the step S12031 comprises:

[0144] When the first inlet airflow is equal to the first preset inlet airflow, and the first outlet airflow is equal to the first preset outlet airflow, the current rotating speeds of the centrifugal fan and the cross-flow fan in the running state are maintained.

[0145] In an optional implementation, after the step S1201, the method further comprises:

[0146] S12022、In the case that both the first cross-flow fan and the second cross-flow fan are in the running state, the second inlet flow rate and the second outlet flow rate of the range hood bottom are acquired.

[0147] S12032、The current rotating speed of the fan system is adjusted or maintained according to the second inlet flow rate and the second outlet flow rate, so as to balance the performance of the fan system when running.

[0148] In an optional embodiment, the step S12032 comprises:

[0149] In the case that the second inlet flow rate is greater than the second preset inlet flow rate, the rotating speed of the first cross-flow fan and the second cross-flow fan is reduced.

[0150] In an optional embodiment, the step S12032 comprises:

[0151] In the case that the second inlet flow rate is less than the second preset inlet flow rate, the rotating speed of the first cross-flow fan and the second cross-flow fan is increased.

[0152] In an optional embodiment, the step S12032 comprises:

[0153] In the case that the second inlet flow rate is equal to the second preset inlet flow rate, and the second outlet flow rate is greater than the second preset outlet flow rate, the rotating speed of the centrifugal fan is reduced while the rotating speed of the first cross-flow fan and the second cross-flow fan is increased.

[0154] In an optional embodiment, the step S12032 comprises:

[0155] In the case that the second inlet flow rate is equal to the second preset inlet flow rate, and the second outlet flow rate is less than the second preset outlet flow rate, the rotating speed of the centrifugal fan is increased while the rotating speed of the first cross-flow fan and the second cross-flow fan is reduced.

[0156] In an optional embodiment, the step S12032 comprises:

[0157] In the case that the second inlet flow rate is equal to the second preset inlet flow rate, and the second outlet flow rate is equal to the second preset outlet flow rate, the current rotating speed of the centrifugal fan, the first cross-flow fan and the second cross-flow fan is maintained.

[0158] The embodiment can balance the performance of the two cross-flow fans and the centrifugal fan in the fan system by adjusting or maintaining the current rotating speed of the fan system, so as to reduce the rotating speed of the centrifugal fan and the noise of the range hood while ensuring the oil fume suction effect of the range hood.

[0159] A specific example is introduced below to describe the control method of the range hood in the embodiment in detail. Figure 13 The working flow of the specific example is as follows:

[0160] S1301, start the range hood, and adjust the wind speed of the cross-flow fan and the centrifugal fan to a low gear.

[0161] S1302, detect the current of the cross-flow fan.

[0162] S1303, determine the number of cross-flow fans in the working state, if only a single cross-flow fan is working, execute step S1304; if two cross-flow fans are working simultaneously, execute step S1309.

[0163] S1304, the wind speed of the single-sided cross-flow fan and the centrifugal fan works at a preset rotating speed.

[0164] The preset rotating speed is set according to the actual situation.

[0165] S1305, refer to Figure 14 , execute the working process of the dynamic adjustment control package, the working process is synchronous with steps S803 to S805, and steps S809 to S814.

[0166] S1306, maintain the current state.

[0167] S1307, if the gear is adjusted, return to step S1304.

[0168] S1308, if the double-sided cross-flow fan is turned on, execute step S1309.

[0169] S1309, the wind speed of the double-sided cross-flow fan and the centrifugal fan works at a preset rotating speed, and execute step S1305.

[0170] S1310, if the gear is adjusted, return to step S1309.

[0171] S1311, if the single-sided cross-flow fan is turned on, execute step S1304.

[0172] S1312, turn off the range hood.

[0173] It should be noted that the theoretical preset inlet flow rate of turning on the single-sided cross-flow fan is different from the theoretical preset inlet flow rate of turning on the double-sided cross-flow fan, and the theoretical preset outlet flow rate of turning on the single-sided cross-flow fan is different from the theoretical preset outlet flow rate of turning on the double-sided cross-flow fan.

[0174] Embodiment 5

[0175] The embodiments of the present disclosure also provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the control method of the range hood provided by any of the above embodiments.

[0176] More specifically, the readable storage medium can include, but is not limited to, a portable disc, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0177] Embodiment 6

[0178] The embodiments of the present disclosure further provide a computer program product comprising a computer program which, when executed by a processor, implements the control method of the range hood according to any one of the above.

[0179] The program code of the computer program product for executing the present disclosure can be written in any combination of one or more programming languages, and can be executed completely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or completely on a remote device.

[0180] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A control method of an extractor hood, characterized in that, The range hood comprises a fan system, the fan system comprising: a centrifugal fan, a cross-flow fan; the cross-flow fan is arranged at the bottom of the range hood close to the cookers; the centrifugal fan is arranged at the top of the range hood; the cross-flow fan is used to collect oil fume at the bottom of the range hood; the centrifugal fan is used to collect oil fume at the top of the range hood, and the control method of the range hood comprises: obtaining the inlet flow and the outlet flow of the bottom of the range hood; adjusting or maintaining the current speed of the fan system according to the inlet flow and the outlet flow, so that the performance of the cross-flow fan and the centrifugal fan in the fan system is balanced; the step of adjusting or maintaining the current speed of the fan system according to the inlet flow and the outlet flow comprises: when the inlet flow is greater than the preset inlet flow, the speed of the cross-flow fan is reduced; when the inlet flow is less than the preset inlet flow, the speed of the cross-flow fan is increased; when the inlet flow is equal to the preset inlet flow, and the outlet flow is greater than the preset outlet flow, the speed of the centrifugal fan is reduced and the speed of the cross-flow fan is increased; when the inlet flow is equal to the preset inlet flow, and the outlet flow is less than the preset outlet flow, the speed of the centrifugal fan is increased and the speed of the cross-flow fan is reduced; when the inlet flow is equal to the preset inlet flow, and the outlet flow is equal to the preset outlet flow, the current speed of the centrifugal fan and the cross-flow fan is maintained.

2. A control method of an extractor hood, characterized by, The range hood comprises a fan system, the fan system comprising: a centrifugal fan, a first cross-flow fan and a second cross-flow fan; the first cross-flow fan and the second cross-flow fan are arranged at the bottom of the range hood close to the cookers; the first cross-flow fan is arranged corresponding to the position of one side of the cookers; the second cross-flow fan is arranged corresponding to the position of the other side of the cookers; the centrifugal fan is arranged at the top of the range hood; the first cross-flow fan is used to collect oil fume of one side of the cookers; the second cross-flow fan is used to collect oil fume of the other side of the cookers; the centrifugal fan is used to collect oil fume at the top of the range hood, and the control method of the range hood comprises: determining the running state of the first cross-flow fan and the second cross-flow fan; when the first cross-flow fan or the second cross-flow fan is in the running state, obtaining the first inlet flow and the first outlet flow of the bottom of the range hood; adjusting or maintaining the current speed of the fan system according to the first inlet flow and the first outlet flow, so that the performance of the fan system is balanced when the fan system runs; the step of adjusting or maintaining the current speed of the fan system according to the first inlet flow and the first outlet flow comprises: when the first inlet flow is greater than the first preset inlet flow, the speed of the cross-flow fan in the running state is reduced; when the first inlet flow is less than the first preset inlet flow, the speed of the cross-flow fan in the running state is increased; when the first inlet air flow is equal to the first preset inlet air flow and the first outlet air flow is greater than the first preset outlet air flow, the speed of the centrifugal fan is reduced and the speed of the running tubular fan is increased; when the first inlet air flow is equal to the first preset inlet air flow and the first outlet air flow is less than the first preset outlet air flow, the speed of the centrifugal fan is increased and the speed of the running tubular fan is reduced; when the first inlet air flow is equal to the first preset inlet air flow and the first outlet air flow is equal to the first preset outlet air flow, the current speed of the centrifugal fan and the running tubular fan is maintained.

3. The control method of the range hood according to claim 2, characterized in that, The step of determining the running state of the first and second tubular fans further comprises: when the first and second tubular fans are both in the running state, the second inlet air flow and the second outlet air flow of the bottom of the range hood are obtained; the current speed of the fan system is adjusted or maintained according to the second inlet air flow and the second outlet air flow, so that the performance of the fan system is balanced when the fan system is running.

4. The control method of the range hood according to claim 3, characterized in that, The step of adjusting or maintaining the current speed of the fan system according to the second inlet air flow and the second outlet air flow comprises: when the second inlet air flow is greater than the second preset inlet air flow, the speed of the first and second tubular fans is reduced; and / or, when the second inlet air flow is less than the second preset inlet air flow, the speed of the first and second tubular fans is increased; and / or, when the second inlet air flow is equal to the second preset inlet air flow and the second outlet air flow is greater than the second preset outlet air flow, the speed of the centrifugal fan is reduced and the speed of the first and second tubular fans is increased; and / or, when the second inlet air flow is equal to the second preset inlet air flow and the second outlet air flow is less than the second preset outlet air flow, the speed of the centrifugal fan is increased and the speed of the first and second tubular fans is reduced; and / or, when the second inlet air flow is equal to the second preset inlet air flow and the second outlet air flow is equal to the second preset outlet air flow, the current speed of the centrifugal fan, the first and second tubular fans is maintained.

5. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the control method of the range hood according to any one of claims 2-4.

6. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to realize the control method of the range hood according to any one of claims 2-4.

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