Range hood and control method thereof

Abstract

The invention provides a range hood and a control method thereof. The range hood comprises a main air duct, a hose air duct and an overturning structure, the hose air duct is arranged on the side of the range hood; one end of the hose duct is connected with the main duct, and the other end of the hose duct is a hose duct suction port; the overturning structure is connected with the hose air duct; the turnover structure is used for controlling the hose air duct to extend out of the range hood when in an open state, so that the hose air duct collects lampblack on the side surface of the range hood. According to the hose air duct arranged on the side face of the range hood, oil smoke on the outer side of the range hood is absorbed in the extending state, the width of the smoke suction opening of the range hood is increased, and a wider air suction range can be provided under the condition that steam or oil smoke is generated by a small cooking electric appliance beside a kitchen range. The hose air duct is arranged in the range hood in the folded state, and the appearance of the range hood is not affected.

Description

Technical Field

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

[0002] The current range hoods on the market are mainly designed to meet the needs of dual stoves. However, with the popularity of small kitchen appliances, the use of portable small appliances such as induction cookers and electric steamers is also increasing. The existing dual stove range hoods cannot collect the steam and fumes generated by these small appliances very well. Figure 1 and Figure 2 As shown. Figure 1 As shown in the figure, the positional relationship between the range hood and the stove is as follows: the stove 102 is located below the front air intake of the range hood 101, and the two stoves 102 almost occupy the entire air intake. Figure 2 As shown in the figure, the working principle of the range hood is as follows: the air flows under the action of the fan, a relatively fast airflow and negative pressure are generated at the air inlet, and the air flows above the stove, such as Figure 2 As shown by the arrow, oil smoke or steam enters the range hood through the air intake port along with the air flow and is discharged under the action of the fan. The size of the air intake port determines the size and range of the air flow above the stove. The farther away from the air intake port, the slower the air flow speed, and the less likely oil smoke and steam are to be inhaled. Summary of the invention

[0003] The technical problem to be solved by the present disclosure is to overcome the defect in the prior art that the oil smoke outside the suction port of the range hood cannot be well collected, and to provide a range hood and a control method thereof.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present disclosure provides a range hood, the range hood comprising a main air duct, a hose air duct, and a flip structure;

[0006] The hose air duct is arranged on the side of the range hood; one end of the hose air duct is connected to the main air duct, and the other end of the hose air duct is a hose air duct suction port; the flip structure is connected to the hose air duct;

[0007] The flip structure is used to control the hose air duct to extend out of the range hood when in an open state, so that the hose air duct collects oil smoke on the side of the range hood.

[0008] Preferably, the flip structure includes a flap and a hinge structure; the hose air duct includes a first hose air duct and a second hose air duct;

[0009] One end of the first hose air duct is connected to the main air duct, and the other end of the first hose air duct is connected to the hinge structure; one end of the second hose air duct is connected to the hinge structure, and the other end of the second hose air duct is a hose air duct suction port;

[0010] The flap is arranged on the side of the range hood, and the hinge structure is connected to the flap;

[0011] The flap rotates along with the rotation of the hinge structure, so that the flip structure is in an open state, and the second hose air duct extends out of the range hood.

[0012] Preferably, the hinge structure comprises a hinge shaft and a hinge damper, the hinge shaft is connected to the flap, and the hinge damper is arranged on the hinge shaft;

[0013] The flap is rotated by the hinge shaft; the hinge damping is used to keep the flap at a preset position.

[0014] Preferably, the flip structure further includes a fixing structure;

[0015] The fixing structure is arranged on the second hose air duct, and the fixing structure is connected to the flap;

[0016] The fixing structure is used to fix the second hose air duct on the flap, so that the second hose air duct rotates along with the rotation of the flap.

[0017] Preferably, the flip structure further includes a bayonet;

[0018] The bayonet is arranged on the flap;

[0019] The closed state and the open state of the bayonet are switched by pressing;

[0020] When the bayonet is in the open state, the flap rotates with the second hose air duct.

[0021] Preferably, the range hood further comprises an oil box;

[0022] When the hose air duct is located inside the range hood, the hose air duct suction port is connected to the oil box so that the oil box can collect the oil collected in the hose air duct.

[0023] Preferably, the hose air duct is arranged on the left side and / or the right side of the range hood.

[0024] The present disclosure also provides a range hood control method, characterized in that it is applied to the range hood as described above, wherein the range hood further comprises a main air duct baffle, and the main air duct baffle is used to adjust the airflow speed of the main air duct suction port by adjusting the rotation angle, and the range hood control method comprises:

[0025] Obtaining a first airflow velocity at the main air duct suction port;

[0026] When the first air flow speed is different from the preset air flow speed, adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct so that the air flow speed at the main air duct suction port is the same as the preset air flow speed;

[0027] The operating state includes a state in which the hose air duct is contracted to the inside of the range hood and a state in which the hose air duct is extended to the outside of the range hood.

[0028] Preferably, when the first air flow speed is different from the preset air flow speed, the step of adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct comprises:

[0029] When the first airflow speed is less than the preset airflow speed, and the first airflow speed is equal to the first preset airflow speed, and the hose air duct provided on the left side or the right side of the range hood is in a state of extending out of the range hood, adjusting the rotation angle of the main air duct baffle to a first angle;

[0030] and / or,

[0031] When at least one expandable air inlet structure is provided on both the left and right sides of the range hood, if the first airflow velocity is less than the preset airflow velocity, and the first airflow velocity is equal to the second preset airflow velocity, and the hose air ducts provided on the left and right sides of the range hood are both in a state of extending out of the range hood, the rotation angle of the main air duct baffle is adjusted to the second angle;

[0032] Wherein, the preset air flow velocity is greater than the first pre-air flow velocity, the first pre-air flow velocity is greater than the second preset air flow velocity; and the first angle is greater than the second angle.

[0033] Preferably, when the first air flow speed is different from the preset air flow speed, the step of adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct comprises:

[0034] When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the third preset airflow speed, and the hose air duct is in a state of being contracted to the inside of the range hood, and when the main air duct baffle is currently at the second angle, adjusting the rotation angle of the main air duct baffle to a third angle;

[0035] and / or,

[0036] When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the fourth preset airflow speed, and the hose air duct is in a state of being contracted to the inside of the range hood, and when the main air duct baffle is currently at the first angle, adjusting the rotation angle of the main air duct baffle to a third angle;

[0037] and / or,

[0038] When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the fifth preset airflow speed, and the hose air duct provided on the left side or the right side of the range hood is in a state of extending outside the range hood, and when the main air duct baffle is currently at the second angle, adjusting the rotation angle of the main air duct baffle to the first angle;

[0039] Among them, the preset air flow speed is smaller than the fifth preset air flow speed, the fifth preset air flow speed is smaller than the fourth preset air flow speed, the fourth preset air flow speed is smaller than the third preset air flow speed, and the third angle is larger than the first angle.

[0040] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0041] The positive and progressive effects of this disclosure are:

[0042] The hose air duct provided on the side of the range hood of the present disclosure absorbs the oil smoke outside the range hood when extended, increases the width of the smoke inlet of the range hood, and can provide a wider suction range when, for example, a small cooking appliance generates steam or oil smoke next to the stove. The hose air duct is provided inside the range hood when retracted, and does not affect the appearance of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a first structural schematic diagram of a range hood fan system in the prior art;

[0044] Figure 2 It is a second structural schematic diagram of a range hood fan system in the prior art;

[0045] Figure 3 A schematic diagram of the structure of a range hood provided in Embodiment 1 of the present disclosure;

[0046] Figure 4 A schematic diagram of a hose air duct of a range hood provided in Example 1 of the present disclosure in an extended state;

[0047] Figure 5A schematic diagram of a hose air duct of a range hood in a contracted state provided in Embodiment 1 of the present disclosure;

[0048] Figure 6 A schematic diagram of a hose air duct structure of a range hood provided in Example 1 of the present disclosure;

[0049] Figure 7 A schematic diagram of oil fume collection in a hose duct of a range hood provided in Example 1 of the present disclosure;

[0050] Figure 8 A schematic diagram of the maximum opening angle of a hose air duct of a range hood provided in Example 1 of the present disclosure;

[0051] Fig. 9 A schematic diagram of a hose air duct bayonet structure of a range hood provided in Example 1 of the present disclosure;

[0052] Fig.10 A flow chart of a range hood control method provided in Embodiment 2 of the present disclosure;

[0053] Fig.11 This is a specific example flow chart of a range hood control method provided in Embodiment 2 of the present disclosure.

[0054] The details of the figure markings are: main air duct 1, hose air duct 2, flip structure 3, flap 31, hinge structure 32, first hose air duct 21, second hose air duct 22, hinge shaft 321, hinge damping 322, bayonet 33, oil box 4, fixing structure 34. DETAILED DESCRIPTION

[0055] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0056] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only 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 prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0057] Example 1

[0058] This embodiment provides a range hood, see Figure 3 The range hood comprises a main air duct 1, a hose air duct 2, and a flip structure 3.

[0059] The hose air duct 2 is arranged on the side of the range hood.

[0060] In an optional embodiment, if there is only one hose air duct, it can be arranged on the left side or right side of the range hood. If there are multiple hose air ducts, they can be arranged on the left side and right side of the range hood as needed.

[0061] One end of the hose air duct 2 is connected to the main air duct 1 , and the other end of the hose air duct 2 is a hose air duct suction port. The flip structure 3 is connected to the hose air duct 2 .

[0062] The flip structure 3 is used to control the hose air duct 2 to extend out of the range hood when it is in the open state, so that the hose air duct 2 collects the oil smoke on the side of the range hood.

[0063] The hose air duct arranged on the side of the range hood in this embodiment absorbs the oil smoke outside the range hood when extended, increasing the width of the range hood's suction port, and providing a wider suction range when, for example, there are small cooking appliances next to the stove that generate steam or oil smoke. The hose air duct is arranged inside the range hood when retracted, and does not affect the appearance of the range hood.

[0064] In an optional embodiment, the range hood further includes an oil box 4 .

[0065] When the hose air duct 2 is located inside the range hood, the hose air duct suction port is connected to the oil box 4 so that the oil box 4 can collect the oil collected in the hose air duct 2 .

[0066] In this embodiment, the range hood can collect the oil fumes collected from cooking on the side into the oil box through the hose air duct, so as to keep the range hood in a clean state.

[0067] In an optional embodiment, the flip structure 3 includes a flap 31 and a hinge structure 32. The hose air duct 2 includes a first hose air duct 21 and a second hose air duct 22.

[0068] One end of the first hose air duct 21 is connected to the main air duct 1, and the other end of the first hose air duct 21 is connected to the hinge structure 32. One end of the first hose air duct 21 is connected to the hinge structure 32, and the other end of the first hose air duct 21 is the hose air duct suction port.

[0069] The flap 31 is disposed on the side of the range hood, and the hinge structure 32 is connected to the flap 31 .

[0070] The flap 31 rotates along with the rotation of the hinge structure 32, so that the flip structure 3 is in an open state, and the first hose air duct 21 extends out of the range hood.

[0071] In an optional embodiment, the hinge structure 32 includes a hinge shaft 321 and a hinge damper 322 , the hinge shaft 321 is connected to the flap 31 , and the hinge damper 322 is disposed on the hinge shaft 321 .

[0072] The flap 31 is rotated by the hinge shaft 321. The hinge damper 322 is used to keep the flap 31 at a preset position.

[0073] In an optional embodiment, the flip structure 3 further includes a fixing structure 34 .

[0074] The fixing structure 34 is disposed on the first hose air duct 21 , and the fixing structure 34 is connected to the flap 31 .

[0075] The fixing structure 34 is used to fix the first hose air duct 21 on the flap 31 so that the first hose air duct 21 rotates along with the rotation of the flap 31 .

[0076] Figure 4 and Figure 5 They respectively represent the extended and retracted states of the hose air duct 2. Figure 6 The side structure of the range hood of this embodiment is as follows: Figure 6 As shown, the flap 31 rotates with the hinge structure 32, and the hinge structure 32 includes a hinge shaft 321. The hinge shaft 321 has a certain damping, which can make the flap 31 stay at any position. The flap 31 drives the hose air duct 2 to move through the fixed structure 34, and the flip structure 3 is in the open state, and the first hose air duct 21 extends out of the range hood. Figure 7 As shown in FIG. 1 , when the hose air duct 2 is retracted into the range hood, the oil smoke collected by the hose air duct 2 will flow from the inclined surface A to the oil box 4 of the range hood. Figure 8 As shown, it is best not to exceed the angle B between the vertical direction of the side of the range hood and the extending direction of the hose.

[0077] This embodiment drives the movement of the hose air duct through the flipping structure of the flap and the hinge structure, and can control the air suction range of the range hood according to user needs, thereby meeting the personalized needs of range hood use.

[0078] In an alternative embodiment, see Fig. 9 The flip structure 3 also includes a bayonet 33 .

[0079] The bayonet 33 is disposed on the flap 31 .

[0080] The closed state and the open state of the bayonet 33 are switched by pressing.

[0081] When the bayonet 33 is in the open state, the flap 31 rotates with the first hose air duct 21 .

[0082] In this embodiment, the flip structure manually opens the flap through the bayonet, and causes the flap to rotate with the second hose air duct and the inclined surface A, thereby expanding the side suction port of the range hood when the user needs it, providing a wider suction range, and improving the flexibility of the range hood to expand the oil fume suction function.

[0083] Example 2

[0084] This embodiment provides a control method for a range hood, characterized in that the range hood is applied to the range hood of embodiment 1, and the range hood further comprises a main air duct baffle, and the main air duct baffle is used to adjust the air flow speed of the main air duct suction port by adjusting the rotation angle, see Fig.10 , the control method of the range hood includes:

[0085] S1. Obtain a first air flow velocity at a suction port of a main air duct.

[0086] S2. When the first air flow velocity is different from the preset air flow velocity, the rotation angle of the main air duct baffle is adjusted according to the operating state of the hose air duct so that the air flow velocity at the main air duct suction port is the same as the preset air flow velocity.

[0087] The operating state includes a state in which the hose air duct is contracted to the inside of the range hood and a state in which the hose air duct is extended to the outside of the range hood.

[0088] In an optional embodiment, step S2 includes:

[0089] When the first air flow velocity is less than the preset air flow velocity, and the first air flow velocity is equal to the first preset air flow velocity, and the hose air duct arranged on the left side or right side of the range hood is in a state of extending outside the range hood, the rotation angle of the main air duct baffle is adjusted to the first angle.

[0090] In an optional embodiment, step S2 includes:

[0091] When at least one hose air duct is provided on the left and right sides of the range hood, if the first air flow velocity is less than the preset air flow velocity, and the first air flow velocity is equal to the second preset air flow velocity, and the hose air ducts provided on the left and right sides of the range hood are in a state of extending to the outside of the range hood, the rotation angle of the main air duct baffle is adjusted to the second angle.

[0092] The preset airflow velocity is greater than the first preset airflow velocity, and the first preset airflow velocity is greater than the second preset airflow velocity. The first angle is greater than the second angle.

[0093] In an optional embodiment, step S2 includes:

[0094] When the first air flow velocity is greater than the preset air flow velocity, and the first air flow velocity is equal to the third preset air flow velocity, and the hose air duct is in a state of being contracted to the inside of the range hood, and when the current main air duct baffle is at the second angle, the rotation angle of the main air duct baffle is adjusted to the third angle.

[0095] In an optional embodiment, step S2 includes:

[0096] When the first air flow speed is greater than the preset air flow speed, and the first air flow speed is equal to the fourth preset air flow speed, and the hose air duct is in a state of contracting to the inside of the range hood, and when the current main air duct baffle is at a first angle, the rotation angle of the main air duct baffle is adjusted to a third angle.

[0097] In an optional embodiment, step S2 includes:

[0098] When the first air flow velocity is greater than the preset air flow velocity, and the first air flow velocity is equal to the fifth preset air flow velocity, and the hose air duct arranged on the left side or the right side of the range hood is in a state of extending out of the range hood, and when the current main air duct baffle is at the second angle, the rotation angle of the main air duct baffle is adjusted to the first angle.

[0099] Among them, the preset air flow speed is less than the fifth preset air flow speed, the fifth preset air flow speed is less than the fourth preset air flow speed, the fourth preset air flow speed is less than the third preset air flow speed, and the third angle is greater than the first angle.

[0100] A specific example is introduced below to explain in detail the control method of the range hood of this embodiment. Fig.11 This is the flowchart for this example.

[0101] S1201. Start the range hood and open the main air duct baffle to a predetermined position.

[0102] S1202. Monitor the first air flow velocity v at the main air duct suction port in real time.

[0103] S1203, determine whether v is equal to the preset airflow velocity v0, if v is equal to v0, execute step S1204; if v is not equal to v0, execute step S1207.

[0104] S1204: Maintain the current state.

[0105] S1205. Turn off the range hood.

[0106] S1206. Close the main air duct baffle of the range hood.

[0107] S1207. Determine the size of v and v0. If v is smaller than v0, execute step S1208; if v is larger than v0, execute step S1212.

[0108] S1208, determine whether v is equal to the first preset airflow velocity v1, if v is equal to v1, execute step S1209; if v is not equal to v1, execute step S1210.

[0109] S1209. If the range hood is in a state where the single-side hose air duct is extended out of the range hood, adjust the main air duct baffle of the range hood to the first angle a, and return to step S1202.

[0110] S1210, determine whether v is equal to the second preset airflow speed v2, if v is equal to v2, execute step S1211.

[0111] S1211. If the range hood is in a state where the double-sided hose air ducts are extended out of the range hood, adjust the main air duct baffle of the range hood to a second angle b, and return to step S1202.

[0112] Among them, v0 is greater than v1, v1 is greater than v2; a is greater than b.

[0113] S1212, determine whether v is equal to the third preset airflow speed v3, if v is equal to v3, execute step S1213; if v is not equal to v3, execute step S1214.

[0114] S1213. If the range hood is in a state where the double-sided hose air ducts are retracted to the inside of the range hood, and the main air duct baffle is located at an angle b, adjust the main air duct baffle of the range hood to a third angle, and return to step S1202.

[0115] Among them, the third angle is the initial angle of the main air duct baffle of the range hood, which is usually set to 90 degrees.

[0116] S1214, determine whether v is equal to the fourth preset airflow speed v4, if v is equal to v4, execute step S1215; if v is not equal to v4, execute step S1216.

[0117] S1215. If the range hood is in a state where the double-sided hose air ducts are retracted to the inside of the range hood, and the main air duct baffle is located at an angle a, adjust the main air duct baffle of the range hood to a third angle, and return to step S1202.

[0118] S1216, determine whether v is equal to the fifth preset airflow speed v5, if v is equal to v5, execute step S1217.

[0119] S1217. If the range hood is in a state where the single-side hose air duct is extending out of the range hood, and the main air duct baffle is at an angle of b, adjust the angle of the main air duct baffle of the range hood to a, and return to step S1202.

[0120] Among them, v0 is smaller than v5, v5 is smaller than v4, v4 is smaller than v3, and the third angle is greater than a.

[0121] It should be noted that v is the real-time detected airflow velocity of the main air duct suction port in this example; v0 is the ideal airflow velocity when the main air duct baffle is set at the initial angle and the hose air duct is contracted to the inside of the range hood; v1 is the ideal airflow velocity when the main air duct baffle is set at a, and one side of the hose air duct extends out of the range hood; v2 is the ideal airflow velocity when the main air duct baffle is set at b, and both sides of the hose air duct extend out of the range hood; v3 is the ideal airflow velocity when the main air duct baffle is set at b, and both hose air ducts are contracted to the inside of the range hood; v4 is the ideal airflow velocity when the main air duct baffle is set at a, and both hose air ducts are contracted to the inside of the range hood; v5 is the ideal airflow velocity when the main air duct baffle is set at b, and one side of the hose air duct extends out of the range hood.

[0122] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A range hood, characterized in that: The range hood comprises a main air duct, a hose air duct, and a flip structure; The hose air duct is arranged on the side of the range hood; one end of the hose air duct is connected to the main air duct, and the other end of the hose air duct is a hose air duct suction port; the flip structure is connected to the hose air duct; The flip structure is used to control the hose air duct to extend out of the range hood when in an open state, so that the hose air duct collects oil smoke on the side of the range hood.

2. The range hood according to claim 1, characterized in that: The flip structure includes a flap and a hinge structure; the hose air duct includes a first hose air duct and a second hose air duct; One end of the first hose air duct is connected to the main air duct, and the other end of the first hose air duct is connected to the hinge structure; one end of the second hose air duct is connected to the hinge structure, and the other end of the second hose air duct is a hose air duct suction port; The flap is arranged on the side of the range hood, and the hinge structure is connected to the flap; The flap rotates along with the rotation of the hinge structure, so that the flip structure is in an open state, and the second hose air duct extends out of the range hood.

3. The range hood according to claim 2, characterized in that: The hinge structure comprises a hinge shaft and a hinge damper, wherein the hinge shaft is connected to the flap, and the hinge damper is arranged on the hinge shaft; The flap is rotated by the hinge shaft; the hinge damping is used to keep the flap at a preset position.

4. The range hood according to claim 2, characterized in that: The flip structure also includes a fixing structure; The fixing structure is arranged on the second hose air duct, and the fixing structure is connected to the flap; The fixing structure is used to fix the second hose air duct on the flap, so that the second hose air duct rotates along with the rotation of the flap.

5. The range hood according to claim 2, characterized in that: The flip structure also includes a bayonet; The bayonet is arranged on the flap; The closed state and the open state of the bayonet are switched by pressing; When the bayonet is in the open state, the flap rotates with the second hose air duct.

6. The range hood according to claim 1, characterized in that: The range hood also includes an oil box; When the hose air duct is located inside the range hood, the hose air duct suction port is connected to the oil box so that the oil box can collect the oil collected in the hose air duct.

7. The range hood according to claim 1, characterized in that: The hose air duct is arranged on the left side and / or the right side of the range hood.

8. A method for controlling a range hood, characterized in that: Applied to the range hood according to any one of claims 1 to 7, the range hood further comprises a main air duct baffle, the main air duct baffle is used to adjust the air flow speed of the main air duct suction port by adjusting the rotation angle, and the control method of the range hood comprises: Obtaining a first airflow velocity at the main air duct suction port; When the first air flow speed is different from the preset air flow speed, adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct so that the air flow speed at the main air duct suction port is the same as the preset air flow speed; The operating state includes a state in which the hose air duct is contracted to the inside of the range hood and a state in which the hose air duct is extended to the outside of the range hood.

9. The control method of the range hood according to claim 8, characterized in that: When the first air flow speed is different from the preset air flow speed, the step of adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct comprises: When the first airflow speed is less than the preset airflow speed, and the first airflow speed is equal to the first preset airflow speed, and the hose air duct provided on the left side or the right side of the range hood is in a state of extending out of the range hood, adjusting the rotation angle of the main air duct baffle to a first angle; and / or, When at least one expandable air inlet structure is provided on both the left and right sides of the range hood, if the first airflow velocity is less than the preset airflow velocity, and the first airflow velocity is equal to the second preset airflow velocity, and the hose air ducts provided on the left and right sides of the range hood are both in a state of extending out of the range hood, the rotation angle of the main air duct baffle is adjusted to the second angle; Wherein, the preset air flow velocity is greater than the first pre-air flow velocity, the first pre-air flow velocity is greater than the second preset air flow velocity; and the first angle is greater than the second angle.

10. The control method of the range hood according to claim 9, characterized in that: When the first air flow speed is different from the preset air flow speed, the step of adjusting the rotation angle of the main air duct baffle according to the operating state of the hose air duct comprises: When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the third preset airflow speed, and the hose air duct is in a state of being contracted to the inside of the range hood, and when the main air duct baffle is currently at the second angle, adjusting the rotation angle of the main air duct baffle to a third angle; and / or, When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the fourth preset airflow speed, and the hose air duct is in a state of being contracted to the inside of the range hood, and when the main air duct baffle is currently at the first angle, adjusting the rotation angle of the main air duct baffle to a third angle; and / or, When the first airflow speed is greater than the preset airflow speed, and the first airflow speed is equal to the fifth preset airflow speed, and the hose air duct provided on the left side or the right side of the range hood is in a state of extending outside the range hood, and when the main air duct baffle is currently at the second angle, adjusting the rotation angle of the main air duct baffle to the first angle; Among them, the preset air flow speed is smaller than the fifth preset air flow speed, the fifth preset air flow speed is smaller than the fourth preset air flow speed, the fourth preset air flow speed is smaller than the third preset air flow speed, and the third angle is larger than the first angle.

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