Air outlet structure of air conditioner range hood and control method thereof

Abstract

An air outlet structure of an air conditioner range hood and a control method thereof, the air outlet structure comprising an air outlet frame, the air outlet frame having an air inlet and an air outlet, an air outlet channel being formed inside the air outlet frame, a swing air blade being installed at the air outlet, the swing air blade comprising an inner swing air blade and an outer swing air blade, the inner swing air blade being swung under the drive of a first drive mechanism, the outer swing air blade being swung under the drive of a second drive mechanism, an outlet of the air outlet channel being separated into an upper air outlet channel and a lower air outlet channel by the inner swing air blade, the outer swing air blade being used to adjust the air outlet direction.The present application has the advantages that: the air outlet structure uses a double swing structure, the double swing blades can be controlled independently, different air outlet angles and air volume ratios can be achieved, the user can adjust the suitable air outlet direction, the comfort is better, the swing angle of the control method is matched with the range hood gear to judge, the effect of cold air not interfering with oil smoke is achieved, the comfort demand of the user is met, and the normal use of the range hood is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a range hood, in particular to an air outlet structure of an air-conditioning type range hood and a control method thereof. BACKGROUND

[0002] A kitchen is a main place for people to cook, and the air environment of the kitchen directly affects the cooking experience. The kitchen is hot in summer and cold in winter, and there is a demand for cooling and heating. Therefore, people have invented a range hood integrated with air conditioning function to cool the air in the kitchen in summer and provide warm air to the kitchen in winter to improve the cooking comfort. The current integrated kitchen air conditioner range hood generally sets the air outlet on the upper edge of the cabinet door, so that the air outlet is embedded in the cabinet, and the overallity is better. However, due to the high air outlet, the cold air cannot be blown to the head or the top of the user standing in front of the range hood due to the angle, which affects the user's comfort and the effect of the cold air. The distance of the air outlet is far, so that the user perceives a higher air outlet temperature without a cooling feeling. In order to have a good human experience effect, the cold air needs to be blown downward, which will cause a low local pressure due to the high flow rate, and the oil fume will be attracted by the local low pressure and discharged. The existing scheme adjusts the wind direction of the air outlet baffle to make the cold air blow to the person without affecting the oil fume suction effect, but this degree has a strong correlation with the wind speed, that is, the higher the wind speed, the lower the local pressure, and the angle must be adjusted to avoid affecting the oil fume suction effect. The wind speed is related to the air outlet area, and under the condition of a certain air volume, the smaller the air outlet area, the higher the wind speed. This has a certain impact on the appearance of the product. If the air outlet is too wide, the appearance will be bloated, and if the air outlet is too narrow, the wind speed will be too high and the angle of the baffle must be adjusted, which affects the user experience. The width of the existing air outlet is generally within 500mm, there is no left and right air guide mechanism, the air outlet area is narrow, and the air outlet direction is controlled by the up and down swing of the air guide door. It is difficult to blow cold air in the left and right directions. In addition, the air outlet frame of the existing air outlet structure needs to be separately installed on the upper edge of the cabinet, and cannot be installed with the whole machine. SUMMARY

[0003] The first technical problem to be solved by the present application is to provide an air outlet structure of an air-conditioning type range hood capable of realizing different air outlet angles and air volume ratios in view of the above-mentioned prior art status.

[0004] The second technical problem to be solved by the present application is to provide a control method of an air outlet structure of an air-conditioning type range hood capable of adjusting the swing angle according to different range hood gears in view of the above-mentioned prior art status.

[0005] The technical scheme adopted by the present application to solve the first technical problem is: the air outlet structure of the air conditioner range hood comprises an air outlet frame, the air outlet frame has an air inlet and an air outlet, an air outlet channel is formed inside the air outlet frame, a swing blade is installed at the air outlet, and the swing blade comprises an inner swing blade and an outer swing blade, the inner swing blade swings under the drive of a first drive mechanism, the outer swing blade swings under the drive of a second drive mechanism, the outlet of the air outlet channel is divided into an upper air outlet channel and a lower air outlet channel by the inner swing blade, and the outer swing blade is used to adjust the air outlet direction.

[0006] In order to support the inner swing blade and the outer swing blade, an inner support frame and an outer support frame are arranged in the air outlet frame, the inner swing blade is supported on the inner support frame, and the outer swing blade is supported on the outer support frame.

[0007] Preferably, the outer swing blade is arranged in the lower air outlet channel.

[0008] In order to effectively adjust the air outlet direction, the opening angle γ of the outer swing blade relative to the vertical plane of the air outlet satisfies 80°≤γ≤90°.

[0009] Preferably, the inner swing blade comprises a first bending part and a second bending part which are mutually bent, and a rotating part of the inner swing blade is arranged between the first bending part and the second bending part.

[0010] In order to effectively cooperate the inner swing blade and the outer swing blade, the vertical projection of the second bending part falls on the outer swing blade.

[0011] Further preferably, the mutual bending angle θ of the first bending part and the second bending part satisfies 150°≤θ≤170°, and most preferably, θ=160°.

[0012] Further preferably, in the open state of the inner swing blade, the first bending part is arranged inside the second bending part, the first bending part is arranged to be inclined downward from outside to inside, and the first bending part divides the outlet of the air outlet channel into the upper air outlet channel and the lower air outlet channel.

[0013] In order to obtain better air outlet effect, in the open state of the inner swing blade, the inlet height a of the upper air outlet channel and the inlet height b of the lower air outlet channel satisfy 2b≤a≤4b, and the swing angle β of the second bending part relative to the upper edge of the outlet of the air outlet frame satisfies -10°≤β≤30°. In the most optimal state, θ=160°, β=10°, and a=3.4b, at this time, the wind speed at the front 700 mm and the height 1500 mm of the range hood is about 1 m / s, the human body feels comfortable, and the oil fume suction effect is good.

[0014] In order to enable the inner swing blade to blow air, the inner swing blade is provided with a meshed distribution of air outlet holes.

[0015] In order to enable the inner swing blade to blow air in a windless manner when the inner swing blade is fully closed, the diameter of the air outlet hole is 2mm-4mm.

[0016] In order to adjust the air outlet angle in a windless manner, the angle a between the central axis of the air outlet hole and the upper edge of the air outlet frame of the inner swing blade when the inner swing blade is fully closed satisfies 5°≤a≤30°.

[0017] In order to control the double swing blades separately, the first driving mechanism is a first step motor, and the second driving mechanism is a second step motor.

[0018] As a preferred embodiment of any of the above, the air outlet frame, the inner swing blade and the outer swing blade are all in a strip shape.

[0019] The control method can adjust the swing angle of the inner swing blade and the outer swing blade according to different gears of the range hood, and the inner swing blade can open corresponding up and down swing actions at each different gear.

[0020] Further preferably, the control method comprises the following steps:

[0021] s1, starting the refrigeration mode and judging the gear of the range hood,

[0022] If the range hood is not started and only the refrigeration is started, step s2 is entered;

[0023] If the weak gear of the range hood is started, step s3 is entered;

[0024] If the strong gear of the range hood is started, step s4 is entered;

[0025] If the automatic gear of the range hood is started, step s5 is entered;

[0026] s2, the default opening angle of the outer swing blade is γ=90°, and the default opening angle of the inner swing blade is β=-10°, which is increased to blow air downward, then the up and down swing is started, the opening angle of the outer swing blade is kept unchanged at γ=90°, and the swing angle of the inner swing blade satisfies -10°≤β≤30°;

[0027] s3, the default opening angle of the outer swing blade is γ=90°, and the default opening angle of the inner swing blade is β=5°, which is reduced to blow air downward, then the up and down swing is started, the opening angle of the outer swing blade is kept unchanged at γ=90°, and the swing angle of the inner swing blade satisfies 5°≤β≤30°;

[0028] s4, the default opening angle of the outer swing blade is γ=80°, the default opening angle of the inner swing blade is β=5°, horizontal blowing, then, the up and down blowing is opened, the opening angle of the outer swing blade is kept unchanged γ=80°, and the swing angle β of the inner swing blade satisfies 5°≤β≤30°;

[0029] s5, whether the speed of the smoke machine is greater than or equal to the set speed is judged;

[0030] If yes, it indicates that the flue resistance is large, the risk of smoke running is large, and step s6 is entered;

[0031] If no, it indicates that the flue resistance is small, the risk of smoke running is small, and step s7 is entered;

[0032] s6, the default opening angle of the outer swing blade is γ=80°, the default opening angle of the inner swing blade is β=5°, horizontal blowing, then the up and down blowing is opened, the opening angle of the outer swing blade is kept unchanged γ=80°, and the swing angle β of the inner swing blade satisfies 5°≤β≤30°;

[0033] s7, the default opening angle of the outer swing blade is γ=90°, the default opening angle of the inner swing blade is β=5°, the downward air outlet is reduced, then the up and down blowing is opened, the opening angle of the outer swing blade is kept unchanged γ=90°, and the swing angle β of the inner swing blade satisfies 5°≤β≤30°.

[0034] Compared with the prior art, the advantages of the air outlet structure are that: the double swing structure, the double swing blades can be controlled independently, different air outlet angles and air volume ratios are realized, the user can adjust the suitable air outlet direction, the comfort is better, the swing angle of the control method is matched with the smoke machine gear position to achieve the effect that cold air does not interfere with oil fume, the comfort demand of the user is met, and the normal use of the smoke exhaust machine is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic view of the air outlet structure of the embodiment of the application;

[0036] Figure 2 It is a structural schematic view of the air outlet frame of the embodiment of the application;

[0037] Figure 3 It is a structural schematic view of the inner swing blade of the embodiment of the application;

[0038] Figure 4 It is Figure 3 It is a plane schematic view of the inner swing blade shown in the figure;

[0039] Figure 5 It is a structural schematic view of the air outlet structure of the embodiment of the application in the refrigeration mode;

[0040] Figure 6This is a schematic diagram of the air outlet structure in the low-power mode of the range hood according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the air outlet structure in the high-power mode of the range hood according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the air outlet structure in the windless mode according to an embodiment of the present invention;

[0043] Figure 9 This is a logical schematic diagram of the control method according to an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of the air outlet of an air-conditioning type range hood according to an embodiment of the present invention. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] like Figures 1 to 4 As shown, the air outlet structure of the air-conditioning type range hood in this embodiment includes an air outlet frame 1, which is elongated and has an air inlet 11 and an air outlet 12. An air outlet channel 13 is formed inside the air outlet frame 1. An inner support frame 4 and an outer support frame 5 are installed at the air outlet 12 of the air outlet frame 1. The inner swing blade 2 is supported on the inner support frame 4, and the outer swing blade 3 is supported on the outer support frame 5. Both the inner swing blade 2 and the outer swing blade 3 are elongated. The inner swing blade 2 rotates under the drive of the first drive mechanism, namely the first stepper motor 6, and the outer swing blade 3 swings under the drive of the second drive mechanism, namely the second stepper motor 7, thus realizing independent control of the two swing blades.

[0047] The outlet of the air outlet duct 13 is divided into an upper air outlet duct 14 and a lower air outlet duct 15 by an inner swing blade 2. An outer swing blade 3 is located in the lower air outlet duct 15. The inner swing blade 2 serves to divert and equalize the airflow, while the outer swing blade 3 is used to adjust the airflow direction. The opening angle γ of the outer swing blade 3 relative to the vertical plane of the air outlet 12 satisfies 80°≤γ≤90°.

[0048] The inner swing blade 2 includes a first bent portion 21 and a second bent portion 22 that bend into each other. The rotating part of the inner swing blade 2 is located between the first bent portion 21 and the second bent portion 22. The mutual bending angle θ between the first bent portion 21 and the second bent portion 22 satisfies 150°≤θ≤170°. Furthermore, the vertical projection of the second bent portion 22 falls on the outer swing blade 3.

[0049] like Figures 5 to 8As shown, with the inner swing fan blade 2 open, the first bend 21 is located inside the second bend 22. The first bend 21 is inclined downwards from the outside to the inside, dividing the outlet of the air outlet duct 13 into an upper air outlet duct 14 and a lower air outlet duct 15. The inlet height a of the upper air outlet duct 14 and the inlet height b of the lower air outlet duct 15 satisfy 2b≤a≤4b. The purpose of the separation is to divert the airflow. After diversion, the lower air outlet duct 15 has a small flow rate and low wind speed, while the upper air outlet duct 14 has a large flow rate and high wind speed. The wind speed of the lower air outlet duct 15 has a significant impact on the fume extraction effect. Therefore, it is necessary to divert the airflow to reduce the velocity, so that most of the cold air blows upwards and a small portion of the cold air blows downwards, thereby reducing the height of the air outlet and simultaneously satisfying the purpose of fume extraction effect and comfort. In this embodiment, the swing angle β of the second bending part 22 relative to the upper edge of the outlet of the air outlet frame 1 satisfies -10°≤β≤30°. By adjusting different swing angles, the air volume of the upper air outlet channel 14 and the lower air outlet channel 15 can be adjusted.

[0050] The inner swing fan blades 2 have mesh-like air outlet holes 23, with a diameter of 2mm to 4mm, preferably 3mm. When the inner swing fan blades 2 are fully closed, the angle α between the central axis of the air outlet hole 23 and the upper edge of the outlet of the air outlet frame 1 satisfies 5°≤α≤30°. When the inner swing fan blades 2 are closed, when cold air is blown out through the air outlet holes 23, the total air volume decreases due to increased wind resistance. This can be mitigated by reducing the speed of the first stepper motor 6, achieving a windless effect. Experimental testing shows that β is optimally 10° and θ is optimally 160°. When β = 10° and θ = 160°, a = 3.4b. At this point, the wind speed at 700mm in front of the range hood and at a height of 1500mm is approximately 1m / s, providing a comfortable experience for the user and ensuring good smoke extraction.

[0051] like Figure 9 As shown, the control method in this embodiment can adjust the swing angle of the inner swing blade 2 and the outer swing blade 3 according to different speed settings of the range hood. At each different speed setting, the inner swing blade 2 can activate the corresponding up-and-down swing action. This control method, combined with the range hood speed setting judgment, achieves the effect of cold air not interfering with cooking fumes, satisfying both user comfort needs and ensuring the normal operation of the range hood.

[0052] The control method specifically includes the following steps:

[0053] S1. Turn on the cooling mode and determine the range hood setting.

[0054] If the range hood is not turned on and only the cooling is on, proceed to step s2;

[0055] If the range hood is turned on at its lowest setting, proceed to step s3;

[0056] If the range hood is turned on at its highest setting, proceed to step s4;

[0057] If the automatic gear of the range hood is turned on, step s5 is entered;

[0058] s2, the default opening angle of the outer swing blade 3 is γ=90°, and the default opening angle of the inner swing blade 2 is β=-10°, which increases the downward air outlet, and then the up-and-down swing air is turned on, the opening angle of the outer swing blade 3 remains unchanged at γ=90°, and the swing angle β of the inner swing blade 2 satisfies-10°≤β≤30°;

[0059] s3, the default opening angle of the outer swing blade 3 is γ=90°, and the default opening angle of the inner swing blade 2 is β=5°, which reduces the downward air outlet, and then the up-and-down swing air is turned on, the opening angle of the outer swing blade 3 remains unchanged at γ=90°, and the swing angle β of the inner swing blade 2 satisfies 5°≤β≤30°;

[0060] s4, the default opening angle of the outer swing blade 3 is γ=80°, and the default opening angle of the inner swing blade 2 is β=5°, which reduces the downward air outlet, and then the up-and-down swing air is turned on, the opening angle of the outer swing blade 3 remains unchanged at γ=80°, and the swing angle β of the inner swing blade 2 satisfies 5°≤β≤30°;

[0061] s5, it is judged whether the rotation speed of the range hood is greater than or equal to the set rotation speed, such as 800 rpm;

[0062] If yes, it indicates that the flue resistance is large, and the risk of smoke running is large, and step s6 is entered;

[0063] If no, it indicates that the flue resistance is small, and the risk of smoke running is small, and step s7 is entered;

[0064] s6, the default opening angle of the outer swing blade 3 is γ=80°, and the default opening angle of the inner swing blade 2 is β=5°, which reduces the downward air outlet, and then the up-and-down swing air is turned on, the opening angle of the outer swing blade 3 remains unchanged at γ=80°, and the swing angle β of the inner swing blade 2 satisfies 5°≤β≤30°;

[0065] s7, the default opening angle of the outer swing blade 3 is γ=90°, and the default opening angle of the inner swing blade 2 is β=5°, which reduces the downward air outlet, and then the up-and-down swing air is turned on, the opening angle of the outer swing blade 3 remains unchanged at γ=90°, and the swing angle β of the inner swing blade 2 satisfies 5°≤β≤30°

[0066] Wherein, step s2 refers to Figure 5 , step s3 refers to Figure 6 , step s4 refers to Figure 7 , and the windless air outlet mode refers to Figure 8 .

[0067] As Figure 10As shown, the air outlet structure is installed at the lower part of the front of the casing of the air conditioner range hood 8, has good integrity, does not need to be fixed with the cabinet, is simpler to install, has a lower air outlet position, realizes different air outlet angles and air volume ratio through double swing leaf air guide, has better comfort, and the air outlet width is approximately the same as the width of the range hood, so that a wider air outlet range can be covered.

[0068] The air outlet structure of the embodiment can be applied to an air conditioner indoor unit as an air conditioner air outlet and can be applied to other machines that need air outlet.

Claims

1. An air outlet structure of an air conditioner range hood, comprising an air outlet frame (1), the air outlet frame (1) having an air inlet (11) and an air outlet (12), an air outlet channel (13) being formed inside the air outlet frame (1), a swing blade being installed at the air outlet (12), characterized in that: The swing blade comprises an inner swing blade (2) and an outer swing blade (3), the inner swing blade (2) swings under the drive of a first driving mechanism, the outer swing blade (3) swings under the drive of a second driving mechanism, the outlet of the air outlet channel (13) is divided into an upper air outlet channel (14) and a lower air outlet channel (15) by the inner swing blade (2), and the outer swing blade (3) is used for adjusting the air outlet direction.

2. The air discharging structure of the range hood according to claim 1, wherein: The air outlet frame (1) is internally provided with an inner support frame (4) and an outer support frame (5), the inner swing blade (2) is supported on the inner support frame (4), and the outer swing blade (3) is supported on the outer support frame (5).

3. The air discharging structure of the range hood according to claim 1, wherein: The outer swing blade (3) is arranged in the lower air outlet channel (15).

4. The air discharging structure of the range hood according to claim 3, characterized in that: The opening angle γ of the outer swing blade (3) relative to the vertical plane of the air outlet (12) satisfies 80°≤γ≤90°.

5. The air discharging structure of the range hood according to claim 4, wherein: The inner swing blade (2) comprises a first bending part (21) and a second bending part (22) which are mutually bent, and the rotating part of the inner swing blade (2) is arranged between the first bending part (21) and the second bending part (22).

6. The air discharging structure of the range hood according to claim 5, wherein: The vertical projection of the second bending part (22) falls on the outer swing blade (3).

7. The air outlet structure of the range hood according to claim 6, characterized in that: The mutual bending angle θ of the first bending part (21) and the second bending part (22) satisfies 150°≤θ≤170°.

8. The air discharging structure of the range hood according to claim 7, wherein: In the open state of the inner swing blade (2), the first bending part (21) is arranged on the inner side of the second bending part (22), the first bending part (21) is arranged to be inclined downward from outside to inside, and the first bending part (21) divides the outlet of the air outlet channel (13) into the upper air outlet channel (14) and the lower air outlet channel (15).

9. The air discharging structure of the range hood according to claim 8, wherein: In the open state of the inner swing blade (2), the inlet height a of the upper air outlet channel (14) and the inlet height b of the lower air outlet channel (15) satisfy 2b≤a≤4b, and the swing angle β of the second bending part (22) relative to the upper edge of the outlet of the air outlet frame (1) satisfies -10°≤β≤30°.

10. The air discharging structure of the range hood according to claim 1, wherein: The inner swing blade (2) is distributed with air outlet holes (23) in a mesh distribution.

11. The air discharging structure of the range hood according to claim 10, wherein: The hole diameter of the air outlet hole (23) is 2mm-4mm.

12. The air discharging structure of the range hood according to claim 10, wherein: In the completely closed state of the inner swing blade (2), the included angle α between the central axis of the air outlet hole (23) and the upper edge of the outlet of the air outlet frame (1) satisfies 5°≤α≤30°.

13. The air discharging structure of the range hood according to claim 1, wherein: The first driving mechanism is a first stepping motor (6), and the second driving mechanism is a second stepping motor (7).

14. The air outlet structure of a range hood according to any one of claims 1 to 13, characterized in that: The air outlet frame (1), the inner swing blade (2) and the outer swing blade (3) are all in a strip shape.

15. A control method of an air outlet structure of an air conditioner range hood, characterized by: The control method is applied to the air outlet structure of claim 9, the control method can adjust the swing angle of the inner swing blade (2) and the outer swing blade (3) according to different gears of the range hood, and in each different gear, the inner swing blade (2) can open the corresponding upper and lower swing action.

16. The control method according to claim 15, characterized by The control method comprises the following steps: s1, open the refrigeration mode, and judge the range hood gear, if the range hood is not opened, only the refrigeration is opened, then step s2 is entered; if the range hood is opened in a weak gear, then step s3 is entered; if the range hood is opened in a strong gear, then step s4 is entered; If the automatic gear of the range hood is turned on, step s5 is entered; s2, the default opening angle of the outer swing blade (3) is γ=90°, the default opening angle of the inner swing blade (2) is β=-10°, the downward air outlet is increased, then the up-and-down swing air is turned on, the opening angle of the outer swing blade (3) is kept unchanged at γ=90°, and the swing angle β of the inner swing blade (2) satisfies-10°≤β≤30°; s3, the default opening angle of the outer swing blade (3) is γ=90°, the default opening angle of the inner swing blade (2) is β=5°, the downward air outlet is reduced, then the up-and-down swing air is turned on, the opening angle of the outer swing blade (3) is kept unchanged at γ=90°, and the swing angle β of the inner swing blade (2) satisfies 5°≤β≤30°; s4, the default opening angle of the outer swing blade (3) is γ=80°, the default opening angle of the inner swing blade (2) is β=5°, the horizontal air blowing is turned on, then the up-and-down swing air is turned on, the opening angle of the outer swing blade (3) is kept unchanged at γ=80°, and the swing angle β of the inner swing blade (2) satisfies 5°≤β≤30°; s5, it is judged whether the rotation speed of the range hood is greater than or equal to the set rotation speed; If yes, it indicates that the flue resistance is large, and the risk of smoke running is large, and step s6 is entered; If no, it indicates that the flue resistance is small, and the risk of smoke running is small, and step s7 is entered; s6, the default opening angle of the outer swing blade (3) is γ=80°, the default opening angle of the inner swing blade (2) is β=5°, the horizontal air blowing is turned on, then the up-and-down swing air is turned on, the opening angle of the outer swing blade (3) is kept unchanged at γ=80°, and the swing angle β of the inner swing blade (2) satisfies 5°≤β≤30°; s7, the default opening angle of the outer swing blade (3) is γ=90°, the default opening angle of the inner swing blade (2) is β=5°, the downward air outlet is reduced, then the up-and-down swing air is turned on, the opening angle of the outer swing blade (3) is kept unchanged at γ=90°, and the swing angle β of the inner swing blade (2) satisfies 5°≤β≤30°.

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