A range hood

Abstract

The present invention provides a range hood, comprising a wind wheel and a main motor for controlling the wind wheel, and a volute, wherein the volute comprises a volute enclosure and a volute side plate, wherein the volute side plate and the volute enclosure form a volute cavity, and the range hood further comprises: a spray assembly, comprising a cleaning portion, wherein the cleaning portion is arranged in the volute cavity, and the cleaning portion is provided with at least one water spray hole facing the volute enclosure and / or the wind wheel. The spray assembly is provided with a cleaning portion having a water spray hole in the volute cavity, and water, cleaning liquid or high-temperature steam, etc. can be sprayed in the water spray hole, and different media can be sprayed in steps to improve the cleanliness, and the cleaning portion is arranged in the volute cavity, and the water spray hole can be aligned with the position where the enclosure and / or the wind wheel are difficult to clean, so as to facilitate the supplementary cleaning of the missed parts. Such a setting overcomes the defect of the automatic cleaning function in the prior art that the cleaning is not thorough, and improves the cleaning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a range hood. Background Art

[0002] Range hoods can remove all the fumes generated during cooking, thereby purifying the kitchen environment. They are essential kitchen appliances for every household. During the oil-absorbing process of the range hood, the fumes need to be discharged through the hood. When the fumes absorb a certain amount of oil, the thickness of the oil inside the volute will become thicker and thicker, which will not only affect the smoke-absorbing ability of the range hood, but also directly affect the operation of the range hood. Therefore, range hoods need to be cleaned regularly. If manual cleaning is used, it will take a lot of time and energy, and a large number of parts must be disassembled, which will have a great impact on users. Automatic cleaning function has become a daily need for consumers.

[0003] The automatic cleaning methods in the prior art include steam cleaning, thermal oil removal and immersion cleaning, etc. The above methods can reduce the work of users disassembling the range hood and also reduce the number of cleaning times.

[0004] Steam cleaning pumps water into the steam engine, and then the steam engine nozzle flushes the inside of the range hood to achieve self-cleaning; thermal oil stains are mainly achieved by heating components such as the volute or impeller to the melting point where the oil stains can melt, so that the oil stains melt and flow out of the range hood to achieve self-cleaning; immersion cleaning is achieved by placing the impeller in a water storage box for immersion and flushing. Since flushing and melting are uncontrollable for these two methods, the cleaning effects are not very ideal, especially there may be missed parts of the cleaning, and the volute cannot be completely cleaned. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the automatic cleaning function in the prior art that the cleaning is not thorough, thereby providing a range hood.

[0006] The present invention provides a range hood, comprising a wind wheel, a main motor for controlling the wind wheel, and a volute, wherein the volute comprises a volute enclosure and a volute side plate, wherein the volute side plate and the volute enclosure form a volute cavity, and the range hood further comprises:

[0007] The spray assembly comprises a cleaning part, wherein the cleaning part is arranged in the volute cavity, and the cleaning part is provided with at least one water spray hole facing the volute enclosure and / or the wind wheel.

[0008] The spray assembly also includes:

[0009] A connecting shaft, coaxial with the rotating shaft of the main motor, one end of the rotating shaft being fixedly connected to the shaft end of the connecting shaft;

[0010] The main body is arranged in the circumferential direction of the connecting shaft and is fixedly connected to the connecting shaft. The cleaning part is arranged outside the fixed connection position between the main body and the connecting shaft.

[0011] A speed change device is provided at the connection position between the main motor and the shaft end of the connecting shaft.

[0012] The volute side plate comprises a volute top plate and a volute wind plate, wherein the volute wind plate is provided with an air inlet, and a peripheral side of the volute top plate is provided with an extension which is parallel to and fixed to the volute enclosure plate.

[0013] The range hood also includes:

[0014] The connecting plate is arranged on the central axis of the connecting shaft, one side of which is connected and fixed to the top plate of the volute, and the other side is provided with a receiving portion, which receives part of the connecting shaft and cooperates with the other shaft end of the connecting shaft, and the connecting shaft is suitable for rotating along the central axis in the receiving portion.

[0015] A water injection hole is also provided on the volute top plate.

[0016] The distance from the cleaning portion to the center of the connecting shaft is between the outer diameter of the wind wheel and the inner diameter of the volute enclosure.

[0017] A water containing chamber is arranged inside the main body, a water inlet hole is arranged on one side of the water containing chamber away from the wind wheel, the water inlet hole is connected to the water injection hole in an on-off manner, and a water outlet hole is arranged on the other side, and the water outlet hole is connected to the cleaning part.

[0018] The cleaning department includes:

[0019] A sleeve, one end of which is connected to the water outlet;

[0020] The cleaning tube is telescopically sleeved on the other end of the sleeve.

[0021] A plurality of water spray holes are arranged on the peripheral surface of the cleaning pipe, and bristles are arranged between adjacent water spray holes.

[0022] The volute top plate is also provided with a groove body which is recessed into the volute cavity, and the groove body is arranged outside the projection of the activity track of the cleaning part on the volute top plate.

[0023] The technical solution of the present invention has the following advantages:

[0024] 1. The present invention provides a range hood, comprising a wind wheel and a main motor for controlling the wind wheel, and a volute, wherein the volute comprises a volute enclosure and a volute side plate, wherein the volute side plate and the volute enclosure form a volute cavity, and the range hood further comprises: a spray assembly, comprising a cleaning portion, wherein the cleaning portion is arranged in the volute cavity, and wherein the cleaning portion is provided with at least one water spray hole facing the volute enclosure and / or the wind wheel.

[0025] The spray assembly is provided with a cleaning part with a water spray hole in the volute cavity. Water, cleaning liquid or high-temperature steam can be sprayed through the water spray hole. Different media can be sprayed in steps to improve the cleanliness. The cleaning part is arranged in the volute cavity, and the water spray hole can be aimed at the difficult-to-clean positions of the enclosure and / or the wind wheel, so as to facilitate the supplementary cleaning of the missed parts. Such a setting overcomes the defect of the automatic cleaning function in the prior art that the cleaning is not thorough, and improves the cleaning effect.

[0026] 2. The present invention provides a range hood, wherein the spray assembly further comprises: a connecting shaft, which is coaxial with the rotating shaft of the main motor, and one end of the rotating shaft is fixedly connected to the axial end of the connecting shaft; a main body, which is arranged in the circumference of the connecting shaft and fixedly connected to the connecting shaft, and the cleaning part is arranged on the outside of the fixed connection position between the main body and the connecting shaft.

[0027] By connecting the main motor and the rotating shaft, the main motor drives the connecting shaft to rotate, and the cleaning part on the connecting shaft rotates in the volute cavity, so that the cleaning water sprayed from the water spray hole cleans the ring-shaped volute shroud and / or the wind wheel, thereby increasing the cleaning area of ​​the cleaning part and achieving effective cleaning of the volute shroud and / or the wind wheel.

[0028] 3. The present invention provides a range hood, wherein a speed changing device is provided at the connection position between the main motor and the shaft end of the connecting shaft.

[0029] The spray assembly rotates with the connecting shaft as the central axis, and a speed changing device is provided to change the rotation speed of the connecting shaft, which is different from the rotation speed of the main motor rotating shaft, so that the spray assembly can rotate relative to the wind wheel, thereby achieving complete cleaning of the wind wheel by the spray assembly.

[0030] 4. The present invention provides a range hood, wherein the volute side plate comprises a volute top plate and a volute air plate, the volute air plate is provided with an air inlet, and the volute top plate is provided with an extension parallel to and fixed to the volute enclosure plate on the periphery thereof.

[0031] The extension on the volute top plate is fixedly connected to the volute enclosure, which increases the accommodating volume of the volute cavity and provides sufficient installation and activity space for the spray assembly.

[0032] 5. The present invention provides a range hood, comprising: a connecting plate, which is arranged on the central axis of the connecting shaft, one side of which is connected and fixed to the top plate of the volute, and the other side is provided with a receiving portion, which receives part of the connecting shaft and cooperates with the other shaft end of the connecting shaft, and the connecting shaft is suitable for rotating along the central axis in the receiving portion.

[0033] Since the connecting plate is connected to the volute top plate, the connecting shaft is accommodated and supported to rotate in the accommodating portion, thereby supporting and stabilizing components such as the spray assembly and the main motor fixedly connected to the connecting shaft.

[0034] 6. The present invention provides a range hood, wherein a water containing chamber is provided inside the main body, a water inlet is provided on one side of the water containing chamber away from the wind wheel, the water inlet is connected to the water injection hole in an on-off manner, and a water outlet is provided on the other side, and the water outlet is connected to a cleaning part.

[0035] The water holding chamber can be used as a water storage device to provide the cleaning part with water or cleaning liquid for cleaning, and use the centrifugal force brought by the rotation to press the water or cleaning liquid into the cleaning part from the water outlet, and provide water outlet pressure for water spraying. Similarly, the water holding chamber can be used as a transfer device, connected to the outside world, connected to the water source or high-pressure steam, and the volute enclosure or wind wheel is cleaned through the water spray hole. This setting makes the spray component more widely applicable, can realize a variety of cleaning methods, and improves the cleaning effect.

[0036] 7. The present invention provides a range hood, wherein the cleaning portion comprises: a sleeve, one end of which is connected to the water outlet; and a cleaning pipe, which is telescopically sleeved on the other end of the sleeve.

[0037] The cleaning part is arranged in the volute cavity, and is divided into a sleeve and a cleaning pipe. The cleaning pipe can adjust the length of the sleeve as needed, so that the water spraying direction of the water spray hole on the cleaning part can correspond to the volute enclosure and the part of the volute that needs to be cleaned, so as to optimize the cleaning position and improve the cleaning effect. In addition, such an arrangement enables the cleaning pipe to extend to a longer length and a larger cleaning range, so that the spray assembly can be applied to a wider range of volutes.

[0038] 8. The present invention provides a range hood, wherein a plurality of water spray holes are arranged on the peripheral surface of the cleaning pipe, and bristles are arranged between adjacent water spray holes.

[0039] The combined use of the water spray holes and the bristles allows the volute enclosure and / or the wind wheel to be cleaned more thoroughly. The bristles can also absorb or accelerate the evaporation of water adhering to the cleaned volute enclosure and / or the wind wheel, allowing them to dry faster and preventing the volute or the wind wheel from rusting.

[0040] 9. The present invention provides a range hood, wherein the volute top plate is further provided with a groove body recessed toward the volute cavity, and the groove body is provided outside the projection of the moving track of the cleaning part on the volute top plate.

[0041] Since the spray assembly and the main motor are connected to the volute top plate via the connecting plate, the volute top plate is subjected to a unidirectional torque brought by other parts. An inner recess is provided on the volute top plate to change the stress structure of the volute side plate, thereby improving the structural strength of the volute top plate and prolonging the life of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a structural schematic diagram of a range hood provided in an embodiment of the present invention;

[0044] Figure 2 for Figure 1 A schematic structural diagram of a volute top plate of a range hood shown;

[0045] Figure 3 for Figure 1 An exploded schematic diagram of a range hood is shown;

[0046] Figure 4 for Figure 1 The schematic diagram of the assembly structure of the connecting plate and the spray assembly inside the range hood as well as the main motor and the fan knob is shown;

[0047] Figure 5 for Figure 3 The exploded view of the range hood shown is a schematic diagram of the assembly structure of the main body and the cleaning part of the spray assembly;

[0048] Figure 6 A schematic diagram of the assembly structure of the main body and the cleaning part of the spray assembly from another angle;

[0049] Figure 7 It is a partial enlarged schematic diagram of the cleaning part in the embodiment of the present invention.

[0050] Figure 8 It is a schematic diagram of a range hood, a water supply box and a control device in an embodiment of the present invention.

[0051] Fig. 9 Schematic diagram of a control panel of a control device in an embodiment of the present invention.

[0052] Description of reference numerals:

[0053] 1-main motor; 2-wind wheel; 3-connecting plate; 4-spraying assembly; 5-volute enclosure; 6-volute top plate; 7-volute wind plate; 8-volute cavity; 9-water supply tank; 10-control device; 41-main body; 42-cleaning part; 43-connecting shaft; 411-water cavity; 412-water outlet; 413-water inlet; 421-sleeve; 422-cleaning pipe; 423-brush; 424-water spray hole; 61-trough body; 62-water injection hole. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] like Figure 1 - Figure 7 The present embodiment provides a range hood, comprising a fan 2, a main motor 1 for controlling the fan 2, and a volute, wherein the volute comprises a volute enclosure 5 and a volute side plate, wherein the volute side plate and the volute enclosure 5 form a volute cavity 8, and the range hood further comprises: a spray assembly 4, comprising a cleaning portion 42, wherein the cleaning portion 42 is disposed in the volute cavity 8, and wherein the cleaning portion 42 is provided with a plurality of water spray holes 424 facing the volute enclosure 5 and the fan 2. As a convertible embodiment, the water spray holes 424 can be arranged to face only the volute enclosure 5 or only the fan 2.

[0059] The spray assembly 4 is provided with a cleaning portion 42 with a water spray hole 424 in the volute cavity 8. Water, cleaning liquid or high-temperature steam can be sprayed in the water spray hole 424, and different media can be sprayed in steps to improve the cleanliness. The cleaning portion 42 is arranged in the volute cavity 8, and the water spray hole 424 can be aimed at the difficult-to-clean positions of the enclosure and the wind wheel 2, so as to facilitate the supplementary cleaning of the missed parts. Such a setting overcomes the defect of the automatic cleaning function in the prior art that the cleaning is not thorough, and improves the cleaning effect.

[0060] In this embodiment, the spray assembly 4 is disposed in the volute cavity 8 . As a convertible implementation, the spray assembly 4 may be partially disposed outside the volute cavity 8 .

[0061] The spray assembly 4 also includes: a connecting shaft 43, which is coaxial with the rotating shaft of the main motor 1, one end of the rotating shaft cooperates with the fan knob of the wind wheel 2, and the other end is fixedly connected to the shaft end of the connecting shaft 43; a main body 41, which is arranged in the circumference of the connecting shaft 43 and is fixedly connected to the connecting shaft 43, and the cleaning part 42 is arranged on the outside of the fixed position between the main body 41 and the connecting shaft 43.

[0062] In this embodiment, the connecting shaft 43 and the main body 41 are interference-connected. As a convertible implementation, the connecting shaft 43 and the main body 41 can be fixed by bonding.

[0063] By connecting the main motor 1 and the rotating shaft, the main motor 1 drives the connecting shaft 43 to rotate, and the cleaning part 42 on the connecting shaft 43 rotates in the volute cavity 8, so that the cleaning water sprayed from the water spray hole 424 cleans the annular volute shroud 5 and the wind wheel 2, thereby increasing the cleaning area of ​​the cleaning part 42 and achieving effective cleaning of the volute shroud 5 and the wind wheel 2.

[0064] A speed change device is provided at the connection position between the main motor 1 and the shaft end of the connecting shaft 43. The spray assembly 4 rotates with the connecting shaft 43 as the central axis, and the speed change device is provided to change the rotation speed of the connecting shaft 43, which is different from the rotation speed of the rotating shaft of the main motor 1, so that the spray assembly 4 can rotate relative to the wind wheel 2, so that the spray assembly 4 can completely clean the wind wheel 2. In this embodiment, the speed change device is a coaxial transmission.

[0065] The volute side plate includes a volute top plate 6 and a volute air plate 7. The volute air plate 7 has an air inlet. The volute top plate 6 is provided with an extension parallel to and fixed to the volute enclosure 5. In this embodiment, the extension is provided on the inner side of the volute enclosure 5 and is screwed to the volute enclosure 5. The extension on the volute top plate 6 is fixedly connected to the volute enclosure 5, which increases the accommodating volume of the volute cavity 8 and provides sufficient installation and activity space for the spray assembly 4.

[0066] The range hood further comprises: a connecting plate 3, which is arranged on the central axis of the connecting shaft 43, one side of which is connected and fixed to the volute top plate 6, and the other side of which is provided with a receiving portion, which receives part of the connecting shaft 43 and cooperates with the other axial end of the connecting shaft 43, and the connecting shaft 43 is suitable for rotating along the central axis in the receiving portion. Since the connecting plate 3 is connected to the volute top plate 6, the connecting shaft 43 is received and supported to rotate in the receiving portion, which plays a role in supporting and stabilizing the components such as the spray assembly 4 and the main motor 1 fixed to the connecting shaft 43.

[0067] In this embodiment, the connecting plate 3 is a cylindrical part and a cylindrical part fixedly connected along the central axis, the cylindrical part with a larger cross-sectional area is fixedly connected to the volute top plate 6, the cylindrical part is a receiving part, a rolling bearing is arranged inside, and the connecting shaft 43 in the receiving part is fixed to the bearing. In addition, a groove 61 matching with the receiving part is arranged in the middle of the side of the main body 41 of the spray assembly 4 facing away from the wind wheel 2.

[0068] A water injection hole 62 is also provided on the volute top plate 6. The distance between the cleaning portion 42 and the center of the connecting shaft 43 is between the outer diameter of the wind wheel 2 and the inner diameter of the volute enclosure 5. The range hood is also equipped with a water supply tank 9 to provide an external water source for the spray assembly 4. The water supply tank 9 is connected to a water supply pipe, which passes through the water injection hole 62 to supply water to the spray assembly 4.

[0069] A water chamber 411 is provided inside the main body 41. A water inlet hole 413 is provided on one side of the water chamber 411 away from the wind wheel 2. The water inlet hole 413 is connected to the water injection hole 62 in an on-off manner. A water outlet hole 412 is provided on the other side. The water outlet hole 412 is connected to the cleaning part 42. As a convertible embodiment, the water injection hole 62 can also be provided on the connecting plate 3 and the connecting shaft 43. The water injection hole 62 in the middle of the connecting shaft 43 is connected to the water chamber 411. In this way, water supply and pressure can be maintained during the operation of the range hood.

[0070] The water chamber 411 can be used as a water storage device to provide the cleaning part 42 with a water source or cleaning liquid for cleaning, and use the centrifugal force brought by the rotation to press the water or cleaning liquid into the cleaning part 42 from the water outlet 412, and provide water outlet pressure for water spraying. Similarly, the water chamber 411 can be used as a transfer device, connected to the outside world, connected to a water source or high-pressure steam, and through the water spray hole 424, the volute enclosure 5 or the wind wheel 2 is cleaned. This arrangement makes the spray assembly 4 more widely applicable, can realize a variety of cleaning methods, and improves the cleaning effect.

[0071] The cleaning part 42 includes: a sleeve 421, one end of which is connected to the water outlet 412; and a cleaning pipe 422, which is telescopically sleeved on the other end of the sleeve 421. The cleaning part 42 is arranged in the volute cavity 8, and is divided into a sleeve 421 and a cleaning pipe. The cleaning pipe 422 can adjust the length of the sleeve 421 as needed, so that the water spraying direction of the water spraying hole 424 on the cleaning part 42 can correspond to the volute enclosure 5 and the part of the volute that needs to be cleaned, so as to optimize the cleaning position and improve the cleaning effect. In addition, such a setting allows the cleaning pipe 422 to extend longer, the cleaning range is larger, and the spray assembly 4 can be applied to a wider range of volutes.

[0072] A plurality of water spray holes 424 are arranged on the circumference of the cleaning pipe 422, and bristles 423 are arranged between adjacent water spray holes 424. The coordinated use of the water spray holes 424 and the bristles 423 allows the volute enclosure 5 and the wind wheel 2 to be cleaned more cleanly, and the bristles 423 can also absorb or accelerate the evaporation of water adhering to the cleaned volute enclosure 5 and the wind wheel 2, so that the volute or the wind wheel 2 can be dried faster, thereby preventing the volute or the wind wheel 2 from rusting and completing the air drying function.

[0073] The volute top plate 6 is also provided with a groove body 61 that is recessed into the volute cavity 8. The groove body 61 is provided outside the projection of the cleaning part activity track on the volute top plate 6. Since the spray assembly 4 and the main motor 1 are connected to the volute top plate 6 via the connecting plate 3, the volute top plate 6 is subjected to a unidirectional torque brought by other parts. The volute top plate 6 is provided with an inner recess to change the stress structure of the volute side plate, improve the structural strength of the volute top plate 6, and improve the life of the range hood. In this embodiment, the volute air plate 7 is also provided with a similar groove body 61.

[0074] As a convertible embodiment, the volute side plate may be provided with a protrusion protruding away from the volute cavity 8 .

[0075] In this embodiment, a drain port is provided at the bottom of the volute cavity to discharge clean waste water.

[0076] The control method of the range hood comprises the following steps: S1: controlling the water source to fill the spray assembly 4 with clean water; S2: controlling the cleaning part 42 to rotate and spray the clean water to the volute enclosure 5 and the wind wheel 2; S3: controlling the cleaning part 42 to stop moving.

[0077] In step S2, starting from the power-on and rotation of the main motor 1, the connecting shaft 43 on the spray assembly 4 is caused to perform a differential motion at a relative speed different from that of the main motor 1 through the speed change device, thereby driving the cleaning part 42 on the spray assembly 4 to rotate relative to the wind wheel 2, and spraying clean water to clean the inner wall of the volute enclosure and the wind wheel.

[0078] In addition, the rotation angle and rotation speed of the cleaning part 42 are adjustable, and the speed change device can be used to realize the cleaning part 42 stopping while the wind wheel 2 is running, or the two structures are relatively stationary, etc.; a prompt sound is set before step S3.

[0079] The range hood is also provided with a range hood control system, including: a control device 10, which is electrically connected to the spray device and is suitable for controlling the rotation and cleaning of the cleaning part 42. The control system includes a water supply tank 9 and a water pipe, the water supply tank 9 is suitable for providing clean water for the range hood, and the water pipe has a water filling state connecting the water supply tank 9 and the spray assembly 4 and a working state disconnecting from the spray assembly 4.

[0080] The control device 10 includes a power supply, a sensor, and a controller. The power supply is electrically connected to the sensor and the controller respectively. The sensor is arranged in the volute cavity 8 and is suitable for detecting the cleaning state in the volute cavity 8. The controller has a control panel, such as Figure 8 - Fig. 9 As shown, the user can control the power supply and the spray device through the control panel after self-cleaning as needed. For example, the air-drying function can be an additional step between step S2 and step S3: stop spraying cleaning water, control the cleaning part 42 to continue rotating for a preset time, so that the friction of the bristles 423 can accelerate the evaporation of water on the wind wheel 2 and the volute enclosure 5; the reservation function is to control the start time of S1; the water retention function can set the number of sprays or the number of self-cleaning; the program function can set the cleaning speed, etc. There are also other function keys related to self-cleaning, such as soaking, flushing, rinsing, etc.

[0081] The sensor is connected to an alarm, and the alarm is suitable for emitting a prompt sound after the cleaning of the volute cavity 8 is completed.

[0082] The controller includes at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor executes the above-mentioned range hood control method.

[0083] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A range hood, comprising a fan wheel (2), a main motor (1) for controlling the fan wheel (2), and a volute, wherein the volute comprises a volute enclosure (5) and a volute side plate, wherein the volute side plate and the volute enclosure (5) form a volute cavity (8), characterized in that: The range hood further comprises: A spray assembly (4) comprising a cleaning portion (42), the cleaning portion (42) being arranged in the volute cavity (8), the cleaning portion (42) being provided with at least one water spray hole (424) facing the volute shroud (5) and / or the wind wheel (2); The spray assembly (4) further comprises: A connecting shaft (43) is coaxial with the rotating shaft of the main motor (1), and one end of the rotating shaft is fixedly connected to the shaft end of the connecting shaft (43); The main motor (1) can drive the connecting shaft (43) to rotate, causing the cleaning portion (42) on the connecting shaft (43) to rotate in the volute cavity (8), so that the cleaning water sprayed from the water spray hole (424) cleans the volute enclosure (5) and the wind wheel (2) arranged in an annular shape. A speed change device is provided at the connection position between the main motor (1) and the shaft end of the connecting shaft (43).

2. The range hood according to claim 1, characterized in that: The spray assembly (4) further comprises: The main body (41) is arranged in the circumferential direction of the connecting shaft (43) and is fixedly connected to the connecting shaft (43); the cleaning portion (42) is arranged outside the position where the main body (41) and the connecting shaft (43) are fixedly connected.

3. The range hood according to claim 2, characterized in that: The volute side plate comprises a volute top plate (6) and a volute air plate (7), the volute air plate (7) being provided with an air inlet, and a peripheral side of the volute top plate (6) being provided with an extension parallel to and fixed to the volute enclosure plate (5).

4. The range hood according to claim 3, characterized in that: Also includes: A connecting plate (3) is arranged on the central axis of the connecting shaft (43), one side of which is connected and fixed to the volute top plate (6), and the other side of which is provided with a receiving portion for receiving part of the connecting shaft (43) and cooperating with the other shaft end of the connecting shaft (43), wherein the connecting shaft (43) is suitable for rotating along the central axis in the receiving portion.

5. The range hood according to claim 4, characterized in that: The volute top plate (6) is also provided with a water injection hole (62).

6. The range hood according to claim 2, characterized in that: The distance from the cleaning portion (42) to the center of the connecting shaft (43) is between the outer diameter of the wind wheel (2) and the inner diameter of the volute shroud (5).

7. The range hood according to claim 5, characterized in that: A water containing chamber (411) is provided inside the main body (41), a water inlet hole (413) is provided on one side of the water containing chamber (411) away from the wind wheel (2), the water inlet hole (413) is connected to the water injection hole (62) in an on-off manner, and a water outlet hole (412) is provided on the other side, the water outlet hole (412) is connected to the cleaning portion (42).

8. The range hood according to claim 7, characterized in that: The cleaning unit (42) comprises: A sleeve (421), one end of which is connected to the water outlet (412); The cleaning tube (422) is telescopically sleeved on the other end of the sleeve (421).

9. The range hood according to claim 8, characterized in that: A plurality of water spray holes (424) are arranged on the circumferential surface of the cleaning pipe (422), and bristles (423) are arranged between adjacent water spray holes (424).

10. The range hood according to claim 8, characterized in that: The volute top plate (6) is further provided with a groove body (61) recessed toward the volute cavity (8); the groove body (61) is provided outside the projection of the moving track of the cleaning portion on the volute top plate (6).

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