Smoke baffle assembly, range hood and control method thereof

Abstract

The present application relates to a smoke baffle assembly, a range hood and a control method thereof, the smoke baffle assembly comprising: a main smoke baffle; characterized in that further comprising: an auxiliary smoke baffle constrained on the outer side of the main smoke baffle in a rotatable manner relative to the main smoke baffle; a smoke suction port is formed on the main smoke baffle; the auxiliary smoke baffle has at least two states in the rotating process: in the first state, the auxiliary smoke baffle is attached to the main smoke baffle, and the auxiliary smoke baffle blocks the smoke suction port; in the second state, the auxiliary smoke baffle is separated from the main smoke baffle, an air inlet channel is formed between the auxiliary smoke baffle and the main smoke baffle, and the smoke suction port is exposed. The advantage is that by setting the auxiliary smoke baffle which can rotate relative to the main smoke baffle, the above-mentioned air flow channel can be formed according to different working conditions, so that the smoke baffle assembly can not only expand the negative pressure area for oil fume suction, but also can form secondary suction for oil fume escaping from the main smoke baffle, and can achieve better smoke suction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil fume purification, and in particular to a smoke baffle assembly, a range hood and a control method thereof. BACKGROUND

[0002] The range hood has become an indispensable kitchen appliance for each family. Its main function is to suck the oil fume generated by the user during cooking into the casing from the air inlet, filter the oil fume by using the centrifugal fan working in the casing, and then discharge the filtered oil fume from the air outlet, thereby completing the purification work of the kitchen environment.

[0003] Since the temperature in the kitchen is relatively high during cooking in summer, the cooking experience of the user is affected. If an air conditioner or a fan is directly installed in the kitchen, not only will the kitchen space be more cramped, but also the oil fume in the kitchen will be blown away, affecting the cooking of the user. To solve the above technical problem, a refrigeration type range hood appears in the prior art. For example, a Chinese utility model patent with the patent number ZL202321572616.7 (the authorization announcement number is CN220669530U) discloses a range hood with a refrigeration function. The range hood blows out the cold air after the gas enters the refrigeration bin from the air inlet pipeline, so as to reduce the temperature in the kitchen.

[0004] However, due to the limitation of the overall volume of the range hood, the cold air outlet of the range hood in the prior art is relatively close to the smoke inlet of the range hood. The air flow of the smoke inlet and the cold air outlet easily affects each other, and once this problem occurs, the oil fume will be directly blown to the user, causing a poor user experience. In addition, the opening angle of the smoke baffle of the existing range hood is fixed. Therefore, the smoke baffle in the prior art cannot be adjusted according to different working conditions. Therefore, the smoke gathering effect of the smoke baffle in the prior art is not good, and the smoke cannot be gathered while separating the cold and hot air flow. Therefore, the prior art needs to be further improved. SUMMARY

[0005] The first technical problem to be solved by the present application is to provide a smoke baffle assembly that can achieve a better smoke gathering effect.

[0006] The second technical problem to be solved by the present application is to provide a range hood applying the above smoke baffle assembly.

[0007] The third technical problem to be solved by the present application is to provide a control method of the above range hood, which can achieve smoke gathering and separation of cold and hot air flow.

[0008] The technical solution adopted by the present application to solve the above first technical problem is: a smoke baffle assembly, comprising:

[0009] The main smoke baffle;

[0010] characterized in that it further comprises:

[0011] The auxiliary smoke baffle is constrained on the outside of the main smoke baffle in a rotatable manner;

[0012] The main smoke baffle is provided with a smoke suction opening, and the auxiliary smoke baffle has at least the following two states during rotation:

[0013] In the first state, the auxiliary smoke baffle is attached to the main smoke baffle, and the auxiliary smoke baffle blocks the smoke suction opening;

[0014] In the second state, the auxiliary smoke baffle is separated from the main smoke baffle, an air inlet channel is formed between the auxiliary smoke baffle and the main smoke baffle, and the smoke suction opening is exposed.

[0015] Preferably, the rotation axis of the auxiliary smoke baffle coincides with or is parallel to the rotation axis of the main smoke baffle.

[0016] In order to improve the smoke suction effect, the main smoke baffle has a notch adjacent to its rotation axis, and the notch forms the smoke suction opening.

[0017] Preferably, the smoke baffle assembly further comprises a first movement mechanism for driving the auxiliary smoke baffle to rotate and a second movement mechanism for driving the main smoke baffle to rotate, and the first movement mechanism is constrained on the second movement mechanism so that the auxiliary smoke baffle can rotate with the main smoke baffle. The auxiliary smoke baffle can rotate with the main smoke baffle, and can also rotate independently of the main smoke baffle, so that the above-mentioned smoke baffle assembly can perform corresponding actions according to different use conditions of the range hood, thereby maximizing the smoke suction effect.

[0018] The structure of the first movement mechanism can be various, and preferably, the first movement mechanism comprises a motor and a connecting rod assembly connected with the power output shaft of the motor, and the output end of the connecting rod assembly is connected with the auxiliary smoke baffle.

[0019] The technical solution adopted by the present application to solve the above-mentioned second technical problem is: a range hood comprising a casing with an air inlet on the front side, characterized in that it further comprises the smoke baffle assembly as described above, and the main smoke baffle and the auxiliary smoke baffle are both arranged in front of the air inlet in a manner that the top edge can be deflected around a straight line extending left and right as the rotation axis, thereby opening or closing the air inlet.

[0020] In order to improve the user's experience, a cold air machine is arranged in the casing, and a cold air opening is formed on the casing in fluid communication with the air outlet of the cold air machine.

[0021] Preferably, the cold air outlet is located above the smoke baffle assembly.

[0022] The present application solves the third technical problem by adopting the technical solution of a control method for the above range hood, characterized by comprising the following steps:

[0023] Step 1, controlling the cold air fan to work;

[0024] Step 2, determining whether the smoke baffle assembly of the current range hood is open, if yes, proceeding to Step 3; if no, proceeding to Step 10;

[0025] Step 3, determining the flow rate q1 of the fan system in the current range hood and the flow rate q2 of the cold air fan;

[0026] Step 4, determining whether the air outlet angle a1 of the current cold air fan is greater than the preset cold air outlet angle threshold a0, if yes, proceeding to Step 5; if no, proceeding to Step 9;

[0027] Step 5, setting k1 = q1 / q3 and k2 = q2 / q4; wherein q3 is the maximum air volume of the fan system at its current gear, and q4 is the maximum air volume of the cold air fan at its current gear; and determining whether k1 is greater than k2, if yes, proceeding to Step 9; if no, proceeding to Step 6;

[0028] Step 6, calculating the required opening angle a2 of the main smoke baffle and the auxiliary smoke baffle, and determining whether a2 is greater than the preset angle, if yes, proceeding to Step 7; if no, proceeding to Step 8;

[0029] Step 7, increasing the working current of the fan system of the current range hood by k3 times, and proceeding to Step 8;

[0030] Step 8, controlling the main smoke baffle and the auxiliary smoke baffle to open to angles of (a6-a2 / 2) and (a6+a2 / 2) respectively, and a6 is the opening angle of the main smoke baffle when the main smoke baffle and the auxiliary smoke baffle are in the first state;

[0031] Step 9, controlling the cold air fan to work according to the set gear, and proceeding to Step 11;

[0032] Step 10, determining the flow rate q2 of the cold air fan, and proceeding to Step 9;

[0033] Step 11, adopting the fan speed r1 of the fan system in the current range hood and the fan speed r2 of the cold air fan, and determining whether the relative amplitude of the change in the speed r1 or r2 from the latest determination exceeds the preset amplitude value k4, k4 ∈ [0, 1], if yes, proceeding to Step 3; if no, proceeding to Step 9.

[0034] Preferably, the specific way of determining the fan system flow q1 in the current range hood in step 3 is: by obtaining the rotation speed of the fan system and the working current of the fan system, the fan system flow q1 in the current range hood is determined.

[0035] Preferably, the specific way of determining the flow q2 of the cold air fan in step 3 is: by obtaining the rotation speed of the cold air fan, the air outlet angle a1 and the working gear information, the flow q2 of the cold air fan is determined.

[0036] Preferably, the calculation formula of the required opening angle a2 of the main smoke baffle and the auxiliary smoke baffle in step 6 is:

[0037] a2 = (k2-k1)*a3

[0038] Wherein, a3 is the maximum angle between the main smoke baffle and the auxiliary smoke baffle.

[0039] Compared with the prior art, the advantages of the present application are: by setting the auxiliary smoke baffle which can rotate relative to the main smoke baffle, the above-mentioned airflow channel can be formed according to different working conditions, so that the smoke baffle assembly can not only expand the negative pressure area for absorbing oil fume, but also can form secondary suction for the oil fume escaping from the main smoke baffle, so as to achieve better smoke suction effect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a structure schematic view of the range hood in the embodiment of the present application;

[0041] Figure 2 It is Figure 1 a structure schematic view of the smoke baffle assembly. DETAILED DESCRIPTION

[0042] The present application will be further described in detail below in combination with the embodiment of the drawings.

[0043] As shown in Figure 1 and Figure 2 , the present embodiment relates to a smoke baffle assembly and a range hood applied with the smoke baffle assembly.

[0044] As shown in Figure 1 , the range hood in the present embodiment includes a housing 4 and a smoke baffle assembly, the front side of the housing 4 has an air inlet 41, the smoke baffle assembly includes a main smoke baffle 1 and an auxiliary smoke baffle 2, the main smoke baffle 1 and the auxiliary smoke baffle 2 are both arranged in front of the air inlet 41 in a way that the top edge thereof can be deflected around the straight line extending left and right as the rotation shaft, so as to open or close the air inlet 41.

[0045] In addition, the casing 4 is provided with a cold air machine, and a cold air outlet 42 in fluid communication with the air outlet of the cold air machine is formed in the casing 4. The cold air outlet 42 is located above the smoke baffle assembly. The cold air machine adopts an air conditioning refrigeration mode, which is a prior art. The technology of providing a cold air machine in the extractor hood can refer to the content disclosed in the Chinese Utility Model Patent No. ZL202222533236.4 (Publication No. CN 218480662U) “Refrigeration Type Extractor Hood” of the applicant, which will not be described in detail here.

[0046] As shown in Figure 2 , the main smoke baffle 1 is provided with a smoke suction opening 11, and the auxiliary smoke baffle 2 is constrained on the outer side of the main smoke baffle 1 in a rotatable manner. The auxiliary smoke baffle 2 has at least two states in the rotating process: in the first state, the auxiliary smoke baffle 2 is attached to the main smoke baffle 1, and the auxiliary smoke baffle 2 blocks the smoke suction opening 11; in the second state, the auxiliary smoke baffle 2 is separated from the main smoke baffle 1, and an air inlet channel 20 is formed between the auxiliary smoke baffle 2 and the main smoke baffle 1, and the smoke suction opening 11 is exposed. As shown in Figure 2 , the main smoke baffle 1 in the embodiment has a notch 12 adjacent to the rotation axis, and the notch 12 forms the smoke suction opening 11. The rotation axis of the auxiliary smoke baffle 2 coincides with or is parallel to the rotation axis of the main smoke baffle 1.

[0047] The smoke baffle assembly further comprises a first movement mechanism 31 for driving the auxiliary smoke baffle 2 to rotate and a second movement mechanism 32 for driving the main smoke baffle 1 to rotate. The first movement mechanism 31 is constrained on the second movement mechanism 32, so that the auxiliary smoke baffle 2 can rotate with the main smoke baffle 1. As shown in Figure 2 , the first movement mechanism 31 in the embodiment comprises a motor 311 and a connecting rod assembly 312 connected with the power output shaft of the motor 311. The output end of the connecting rod assembly 312 is connected with the auxiliary smoke baffle 2. The second driving mechanism 32 can adopt the existing technology, such as the content disclosed in the Chinese Utility Model Patent No. ZL202222977293.1 (Publication No. CN 219693342U) “Extractor Hood”, which will not be described in detail here.

[0048] The control method of the extractor hood in the embodiment comprises the following steps:

[0049] Step 1, controlling the cold air machine to work;

[0050] Step 2, judging whether the smoke baffle assembly of the current extractor hood is opened. If yes, go to step 3; if no, go to step 10.

[0051] Step 3, determine the fan system flow q1 in the current range hood and the flow q2 of the cold air blower;

[0052] In this embodiment, by obtaining the speed of the fan system and the working current of the fan system, the fan system flow q1 in the current range hood is determined;

[0053] By obtaining the speed of the cold air blower, the air outlet angle a1 and the working gear information, the flow q2 of the cold air blower is determined;

[0054] The above-mentioned q1 and q2 can be obtained by experiment or by the method in the prior art, which will not be described here;

[0055] Step 4, determine whether the air outlet angle a1 of the current cold air blower is greater than the preset cold air outlet angle threshold a0, if yes, go to step 5; if no, go to step 9;

[0056] The air outlet angle of the cold air blower in this embodiment is adjustable and also uses the prior art, which can be referred to the disclosure in the Chinese invention patent application No. CN 202410052239.7 (application publication No. CN117722721A) of the applicant, which will not be described here;

[0057] Step 5, let k1=q1 / q3, k2=q2 / q4; wherein q3 is the maximum air volume of the fan system at its current gear, q4 is the maximum air volume of the cold air blower at its current gear; and determine whether k1 is greater than k2, if yes, go to step 9; if no, go to step 6;

[0058] Step 6, calculate the required opening angle a2 of the main smoke baffle and the auxiliary smoke baffle, and determine whether a2 is greater than the preset angle, if yes, go to step 7; if no, go to step 8;

[0059] In this embodiment, the calculation formula of the required opening angle a2 of the main smoke baffle and the auxiliary smoke baffle is:

[0060] a2=(k2-k1)*a3

[0061] Wherein, a3 is the maximum angle between the main smoke baffle and the auxiliary smoke baffle;

[0062] The above-mentioned a2 corresponds to the difference between the opening angle of the auxiliary smoke baffle and the opening angle of the main smoke baffle;

[0063] Step 7, increase the working current of the fan system of the current range hood by k3 times, and go to step 8;

[0064] Step 8, control the main baffle and the auxiliary baffle to open the included angle to (a6-a2 / 2) and (a6+a2 / 2) respectively, a6 is the opening angle of the main baffle when the main baffle and the auxiliary baffle are in the first state;

[0065] Step 9, control the cooling fan to work according to the set gear, and turn to step 11;

[0066] Step 10, determine the flow q2 of the cooling fan, and turn to step 9;

[0067] Step 11, adopt the fan system speed r1 and the cooling fan speed r2 in the current range hood, and judge whether the relative amplitude of r1 or r2 and the speed change at the latest time is greater than the preset amplitude value k4, k4∈[0,1], if yes, turn to step 3; if no, turn to step 9.

[0068] In the embodiment, by setting the main baffle and the auxiliary baffle rotating relative to the main baffle, on the one hand, the above-mentioned airflow channel can be formed according to different working conditions, and not only the negative pressure area for sucking in the oil fume can be expanded, but also the oil fume escaping from the main baffle can be secondarily sucked, and better smoke collection effect can be achieved; on the other hand, by separating the cold airflow and the hot airflow through the auxiliary baffle and the main baffle respectively, not only the oil fume suction effect is ensured, but also stable air outlet conditions are created for the cooling air, the problem that the oil fume is directly blown to the user is solved, and the user's use comfort is greatly improved.

Claims

1. A smoke baffle assembly for a range hood, the range hood including a housing (4) having an air inlet (41) on the front side, the smoke baffle assembly comprising: Main smoke baffle (1); Its features also include: The auxiliary smoke baffle (2) is constrained to the outside of the main smoke baffle (1) in a manner that allows it to rotate relative to the main smoke baffle (1); The main smoke baffle (1) and the auxiliary smoke baffle (2) can both be set in front of the air inlet (41) in such a way that their top edges can be deflected around the straight line extending to the left and right as the axis of rotation, thereby opening or closing the air inlet (41); The main smoke baffle (1) has a smoke inlet (11), and the auxiliary smoke baffle (2) has at least the following two states during rotation: In the first state, the auxiliary smoke baffle (2) is attached to the main smoke baffle (1), and the auxiliary smoke baffle (2) blocks the smoking port (11); In the second state, the auxiliary smoke baffle (2) is separated from the main smoke baffle (1), and an air inlet channel (20) is formed between the auxiliary smoke baffle (2) and the main smoke baffle (1), and the smoke inlet (11) is exposed.

2. The smoke baffle assembly according to claim 1, characterized in that: The rotation axis of the auxiliary smoke baffle (2) coincides with or is parallel to the rotation axis of the main smoke baffle (1).

3. The smoke baffle assembly according to claim 2, characterized in that: The main smoke baffle (1) has a notch (12) near its axis of rotation, which forms the aforementioned smoking opening (11).

4. The smoke baffle assembly according to any one of claims 1 to 3, characterized in that: The smoke baffle assembly further includes a first motion mechanism (31) for driving the auxiliary smoke baffle (2) to rotate and a second motion mechanism (32) for driving the main smoke baffle (1) to rotate. The first motion mechanism (31) is constrained on the second motion mechanism (32) so that the auxiliary smoke baffle (2) can rotate together with the main smoke baffle (1).

5. The smoke baffle assembly according to claim 4, characterized in that: The first motion mechanism (31) includes a motor (311) and a linkage assembly (312) driven and connected to the power output shaft of the motor (311). The output end of the linkage assembly (312) is connected to the auxiliary smoke baffle (2).

6. A range hood, comprising a housing (4) having an air inlet (41) on the front side, characterized in that... It also includes a smoke baffle assembly as described in any one of claims 1 to 5 above, wherein the main smoke baffle (1) and the auxiliary smoke baffle (2) are both disposed in front of the air inlet (41) in such a way that their top edges can be deflected around a straight line extending to the left and right as a pivot, thereby opening or closing the air inlet (41).

7. The range hood according to claim 6, characterized in that: The housing (4) is equipped with a cold air fan, and the housing (4) has a cold air outlet (42) that is in fluid communication with the air outlet of the cold air fan.

8. The range hood according to claim 7, characterized in that: The cold air vent (42) is located above the smoke baffle assembly.

9. A control method for a range hood as described in any one of claims 7 or 8, characterized in that... Includes the following steps: Step 1: Control the operation of the air cooler; Step 2: Determine whether the smoke baffle assembly of the current range hood is open. If yes, proceed to step 3; otherwise, proceed to step 10. Step 3: Determine the current flow rate q1 of the fan system and the flow rate q2 of the air cooler in the range hood; Step 4: Determine whether the current air outlet angle a1 of the air cooler is greater than the preset air outlet angle threshold a0. If yes, proceed to step 5; otherwise, proceed to step 9. Step 5: Let k1 = q1 / q3, k2 = q2 / q4; where q3 is the maximum air volume of the fan system at its current setting, and q4 is the maximum air volume of the evaporative cooler at its current setting; and determine whether k1 is greater than k2. If yes, proceed to step 9; otherwise, proceed to step 6. Step 6: Calculate the required opening angle a2 between the main smoke baffle and the auxiliary smoke baffle, and determine whether a2 is greater than the preset angle. If yes, proceed to step 7; otherwise, proceed to step 8. Step 7: Increase the operating current of the current range hood's fan system by k3 times, and proceed to step 8; Step 8: Control the main smoke baffle and the auxiliary smoke baffle to open their included angles to (a6-a2 / 2) and (a6+a2 / 2) respectively. a6 is the opening angle of the main smoke baffle when the main smoke baffle and the auxiliary smoke baffle are in the first state. Step 9: Control the air cooler to work according to the set gear, and then proceed to step 11; Step 10: Determine the air cooler's flow rate q2 and proceed to step 9; Step 11: Use the current fan speed r1 and air cooler speed r2 in the range hood, and determine whether the relative amplitude of the speed change of r1 or r2 compared with the latest determination exceeds the preset amplitude value k4, k4∈[0,1]. If yes, proceed to step 3; otherwise, proceed to step 9.

10. The control method according to claim 9, characterized in that: The specific method for determining the current fan system flow rate q1 in step 3 is as follows: by obtaining the fan system speed and the fan system operating current, the current fan system flow rate q1 in the range hood is determined.

11. The control method according to claim 10, characterized in that: The specific method for determining the air cooler flow rate q2 in step 3 is as follows: by obtaining the air cooler's rotation speed, air outlet angle a1, and operating speed information, the air cooler flow rate q2 is confirmed.

12. The control method according to claim 10, characterized in that: The formula for calculating the required opening angle α2 between the main smoke baffle and the auxiliary smoke baffle in step 6 is as follows: a2=(k2-k1)*a3 Among them, a3 is the maximum included angle between the main smoke baffle and the auxiliary smoke baffle.

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