Range hood based on steam self-cleaning

Abstract

The invention relates to the technical field of range hoods, in particular to a range hood based on steam self-cleaning, comprising: a housing communicated with a flue; a spray head assembly and a swing assembly used for swinging the spray head assembly are arranged in the machine shell, a bent plate is further fixed to the inner side of the machine shell, and the spray head assembly is contained in a space formed by the bent plate and the inner wall of the machine shell; wherein a driving assembly is further installed in the machine shell, the spray head assembly is designed to be capable of swinging so that the spray head assembly can swing outwards from the interior of a bent plate in a cleaning mode, under the normal working condition, the spray head assembly is contained in the bent plate, and shielding and protection are provided by the bent plate; according to the range hood, the nozzle assembly is designed to effectively prevent the nozzle assembly from being exposed to high temperature and oil smoke, so that the durability of the range hood is remarkably improved, and meanwhile, the flue cleaning assembly is designed for the flue so as to comprehensively clean the machine shell and the flue.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and particularly to a range hood based on steam self - cleaning. Background Art

[0002] As an essential exhaust device in the kitchen, the maintenance and cleaning during the use of range hoods have always been the focus of users. With the development of technology, traditional cleaning methods have gradually been replaced by steam high - temperature cleaning, which is more efficient and environmentally friendly. Steam high - temperature cleaning utilizes the strong penetration and decontamination ability of high - temperature steam to effectively remove the oil stains deposited inside the range hood and improve the cleaning efficiency.

[0003] However, the steam cleaning devices of range hoods currently on the market are usually exposed and installed inside the casing of the range hood. Since the range hood continuously sucks in high - temperature and oil - fume gases during operation, after the cleaning device is in contact with high - temperature and oil - fume for a long time, it is extremely easy to cause damage to the pipeline of the cleaning device and blockage of the nozzle.

[0004] Based on this, in order to protect the cleaning device and improve its durability, we propose a range hood based on steam self - cleaning. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages such as damage to the pipeline of the cleaning device and blockage of the nozzle in the prior art, and to propose a range hood based on steam self - cleaning.

[0006] In order to achieve the above - mentioned purpose, the present invention adopts the following technical solutions:

[0007] Design a range hood based on steam self - cleaning, including:

[0008] A casing connected to a flue;

[0009] Inside the casing, a nozzle assembly and a swing assembly for swinging the nozzle assembly are provided. A bending plate is also fixed on the side of the inside of the casing, and the nozzle assembly is received in the space formed by the bending plate and the inner wall of the casing;

[0010] Wherein a driving assembly is also installed inside the casing, and the driving assembly is used to drive the nozzle assembly flipped outside the bending plate to rotate.

[0011] Further, the nozzle assembly includes a pipe fitting and a number of nozzles arranged outside the pipe fitting;

[0012] The pipe fitting is horizontally arranged in the chamber inside the casing.

[0013] Further, the swing assembly includes a first motor fixed inside the casing through a bracket. A shaft end of the first motor is connected with an arm, and a distal end of the arm is fixedly connected with the pipe fitting.

[0014] An avoidance opening for accommodating the arm is formed on an end face of the bending plate, and a floating structure is arranged between the arm and the shaft end of the first motor.

[0015] Further, the floating structure includes a key embedded on the first motor.

[0016] A notch groove is formed in an inner hole of the arm. The key can slide circumferentially in the notch groove, and a torsion spring is fixedly connected between the shaft end of the first motor and the arm.

[0017] Further, the driving assembly includes a second motor fixed inside the casing through a bracket. A first gear is fixedly installed on a shaft end of the second motor, and a second gear is fixed on an outer side of the pipe fitting. The first gear and the second gear are in meshing transmission.

[0018] A clamping assembly for positioning the pipe fitting is arranged on the bracket.

[0019] Further, the clamping assembly includes a guide rod fixed on the bracket.

[0020] A threaded section is fixed on a shaft end of the second motor. A sliding seat is in threaded connection with an outer side of the threaded section. The sliding seat and the guide rod are arranged in a penetrating and sliding manner. A pushing seat slides horizontally on an upper end of the sliding seat. A first spring is fixedly connected between the pushing seat and the sliding seat. A limiting post is fixedly installed at an outer end of the pushing seat.

[0021] A clamping disc is fixedly connected to an outer side of the pipe fitting. An annular groove adapted to the limiting post is formed on an end face of the clamping disc. A stop platform is fixedly installed on a shaft end of the second motor. A return spring is arranged between the stop platform and the sliding seat.

[0022] Further, a flue cleaning assembly installed in the flue is also included.

[0023] The flue cleaning assembly includes a third motor fixed in the flue through a bracket. A hollow pipe is fixedly installed on a shaft end of the third motor. A cleaning component is arranged in the hollow pipe. An air inlet hole is formed on an end face of the hollow pipe.

[0024] Further, the cleaning component includes a piston plate slidably connected in the hollow pipe. The piston plate is circumferentially locked with the hollow pipe, and a second spring is fixedly connected between the piston plate and the hollow pipe.

[0025] A hollow column is fixedly installed at the bottom of the piston plate, an air passage connected to the hollow tube is formed between the inside of the hollow column and the piston plate, and an air jet hole is obliquely opened on the outside of the hollow column.

[0026] Furthermore, a barrier component is provided inside the housing;

[0027] The barrier assembly includes a fourth motor installed in the housing through a bracket, a baffle is slidably connected to the upper end of the housing, the baffle can cover the lower part of the communication port of the flue, and a guide port is opened on the end surface of the baffle;

[0028] A sleeve is fixedly installed on the side of the baffle, a screw rod is rotatably connected to the inner top of the casing, the screw rod and the sleeve are threadedly connected, and the fourth motor and the screw rod are transmission-connected via a transmission structure.

[0029] Furthermore, the bending plate includes a front plane connected to a rear plane at the rear side of the front plane and two slope surfaces;

[0030] The two slopes are connected to both sides of the rear plane, and the bottoms of the slopes are connected to the rear plane, wherein the middle of the rear plane has a drainage port which is opposite to the guide port in the upper and lower parts.

[0031] The present invention proposes a range hood based on steam self-cleaning, which has the beneficial effect that: in the present invention, the nozzle assembly is set to a swingable design so that it can be swung outward from the inside of the bending plate in the cleaning mode; under normal working conditions, the nozzle assembly is stored inside the bending plate, and the bending plate provides shielding and protection to effectively avoid the nozzle assembly from being exposed to high temperature and oil smoke, thereby significantly improving its durability; at the same time, a flue cleaning assembly is also designed for the flue to achieve comprehensive cleaning of the casing and the flue, thus providing a reliable and convenient kitchenware cleaning solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The three-dimensional Figure 1 ;

[0033] Figure 2 The three-dimensional Figure 2 ;

[0034] Figure 3 is a cross-sectional view of the casing of the present invention;

[0035] Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention without the outer shell;

[0036] Figure 5 It is a schematic diagram of the structure of the barrier component of the present invention;

[0037] Figure 6 is Figure 5 Schematic diagram of the enlarged structure of area A;

[0038] Figure 7 Schematic diagram of the clamping component structure of the present invention;

[0039] Figure 8 Front view of the barrier component of the present invention;

[0040] Figure 9 Schematic diagram of the bending plate structure of the present invention;

[0041] Figure 10 Schematic diagram of the flue cleaning component structure of the present invention;

[0042] Figure 11 Cross-sectional view of the flue cleaning component of the present invention;

[0043] Figure 12 Schematic diagram of the state when the nozzle component of the present invention is flipped.

[0044] In the figure: 1. Machine shell; 10. Flue; 11. Bending plate; 111. Front plane; 112. Rear plane; 113. Slope surface; 114. Drainage port; 12. Avoidance port; 2. Nozzle component; 21. Pipe fitting; 22. Nozzle; 23. Second gear; 3. Swing component; 31. First motor; 32. Arm; 33. Key; 34. Notch groove; 35. Torsion spring; 4. Driving component; 41. Second motor; 42. First gear; 5. Clamping component; 51. Guide rod; 52. Threaded section; 53. Slide seat; 54. Pushing seat; 55. First spring; 56. Limit post; 57. Clamping disc; 58. Ring groove; 59. Return spring; 6. Flue cleaning component; 61. Third motor; 62. Hollow pipe; 621. Air inlet hole; 63. Piston plate; 64. Hollow column; 65. Air duct; 66. Air injection hole; 67. Second spring; 7. Barrier component; 70. Diversion port; 71. Fourth motor; 72. Baffle; 73. Sleeve; 74. Lead screw; 75. Transmission structure. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0046] Refer to Figure 1-12 For an embodiment of the present invention, it discloses an oil fume machine based on steam self-cleaning, which is used to solve the problems that the cleaning device of traditional oil fume machines is usually exposed inside the machine shell and is in a harsh environment of high temperature and oil fume for a long time, resulting in damage to the cleaning device and blockage of the nozzles;

[0047] Refer toFigure 1 , Figure 2 and Figure 3 , specifically, the range hood includes a housing 1 connected to a flue 10. The flue 10 is used to connect to a fan device. A negative pressure area is formed inside the housing 1 through the fan device to achieve the attraction of oil fumes, and finally discharged outward along the flue 10. Of course, in this embodiment, a filter screen plate, an oil collecting box and other components can also be arranged inside the housing 1. These components are all conventional setting methods of those skilled in the art and will not be elaborated here;

[0048] Referring to Figure 4 , Figure 5 , a spray head assembly 2 and a swing assembly 3 for swinging the spray head assembly 2 are arranged inside the housing 1. A bending plate 11 is also fixed on the inner side of the housing 1. The spray head assembly 2 is received in the space formed by the bending plate 11 and the inner wall of the housing 1;

[0049] Wherein a driving assembly 4 is also installed inside the housing 1. The driving assembly 4 is used to drive the spray head assembly 2 flipped outside the bending plate 11 to rotate.

[0050] That is to say, in this embodiment, through the arranged swinging spray head assembly 2, in the cleaning condition, the spray head assembly 2 swings out from the inside of the bending plate 11 and is driven to rotate by the driving assembly 4 to achieve the circumferential cleaning of the inside of the housing 1; on the contrary, in the normal condition, the spray head assembly 2 is received inside the bending plate 11 and is shielded by the bending plate 11 to avoid the invasion of high temperature and oil fumes, thereby effectively improving the durability of the spray head assembly 2;

[0051] Of course, in this embodiment, the spray head assembly 2 should be connected to an external steam generating device through a pipeline. In the cleaning condition, the steam generating device supplies high-temperature and high-pressure steam to the spray head assembly 2 to achieve the purpose of cleaning the inner wall of the housing 1.

[0052] Referring to Figure 5 , in some embodiments, the spray head assembly 2 in the present invention includes a pipe fitting 21 and a plurality of spray heads 22 arranged outside the pipe fitting 21. Specifically, in this embodiment, the plurality of spray heads 22 are circumferentially and spaced apart along the outer circumference of the pipe fitting 21 to form a larger cleaning area;

[0053] Wherein, the pipe fitting 21 is horizontally arranged in the chamber inside the housing 1. That is, when the pipe fitting 21 rotates circumferentially, a circumferential spraying operation can be formed inside the housing 1 to achieve the purpose of steam cleaning the inside of the housing 1.

[0054] Referring to Figure 5 , Figure 6, on the basis of the above embodiments, in this embodiment, the swing assembly 3 includes a first motor 31 fixed inside the housing 1 through a bracket. A shaft end of the first motor 31 is connected to an arm 32, and a distal end of the arm 32 is fixedly connected to the pipe fitting 21;

[0055] An avoidance opening 12 for accommodating the arm 32 is provided on an end face of the bending plate 11, and a floating structure is provided between the arm 32 and the shaft end of the first motor 31.

[0056] That is, in the cleaning condition, by rotating the first motor 31, the arm 32 rotates, and the arm 32 drives the pipe fitting 21 to turn outwards from the inside of the bending plate 11 to the middle of the housing 1. After reaching the working position, it can be driven by the driving assembly 4 to rotate and clean. Of course, in this embodiment, the steam supply for the pipe fitting 21 can be adapted to its circumferential rotational movement through a rotary joint. The inlet of the rotary joint is connected to a steam joint through a hose, and by virtue of the deformable ability of the hose, it is adapted to the swinging movement of the pipe fitting 21.

[0057] In addition, the purpose of setting the floating structure is to provide a certain displacement amount to avoid a flexible connection between the pipe fitting 21 and the driving assembly 4 in subsequent swinging actions, so as to improve the connection stability;

[0058] Refer to Figure 6 , specifically, in this embodiment, the floating structure includes a key 33 embedded on the first motor 31;

[0059] A notch groove 34 is opened in an inner hole of the arm 32. The groove width of the notch groove 34 is greater than the width of the key 33, and the key 33 can slide circumferentially in the notch groove 34. Of course, two snap rings can also be clamped on the shaft end of the first motor 31 to limit the axial position of the arm 32 to avoid the problem of transverse movement. A torsion spring 35 is fixedly connected between the shaft end of the first motor 31 and the arm 32. By setting the torsion spring 35, its rotation reset ability is improved. In this embodiment, the torsion spring 35 is sleeved outside the shaft rod of the first motor 31.

[0060] Refer to Figure 5 、 Figure 6 , on the basis of the above embodiments, in the present invention, the driving assembly 4 includes a second motor 41 fixed inside the housing 1 through a bracket. A first gear 42 is fixedly installed on a shaft end of the second motor 41, and a second gear 23 is fixed on the outside of the pipe fitting 21, and the first gear 42 and the second gear 23 are meshed and driven;

[0061] A clamping assembly 5 for positioning the pipe fitting 21 is provided on the bracket.

[0062] Refer to Figure 12, that is, under the cleaning condition, when the first motor 31 flips the pipe fitting 21 from the inside of the bending plate 11 to the middle of the machine housing 1 through the arm 32, at this time, the second gear 23 on the pipe fitting 21 contacts and meshes with the first gear 42 on the second motor 41. Since the pipe fitting 21 and the arm 32 are designed with a rotational connection, the second motor 41 can drive the first gear 42 to rotate, and then the pipe fitting 21 can be driven to rotate circumferentially by means of the second gear 23. When high-temperature and high-pressure steam is supplied to the pipe fitting 21, the steam is sprayed from the nozzle 22 onto the inner wall of the machine housing 1 to achieve cleaning.

[0063] It should be noted that when the pipe fitting 21 swings to the middle of the machine housing 1, the second gear 23 and the first gear 42 may not be in exactly meshing positions. For example, when the pipe fitting 21 swings into place, the tips of the teeth of the second gear 23 and the first gear 42 are opposite.

[0064] At this time, the above-mentioned floating structure can be used to eliminate this part of the meshing error. That is, when the pipe fitting 21 swings into place, even if the second gear 23 and the first gear 42 are in a position where the tips of their teeth are opposite, at this time, since the arm 32 has a certain deflection amount at the shaft end of the first motor 31, this deflection amount is limited by the movement amount of the notch groove 34 and the key 33.

[0065] That is, in this state, the arm 32 will produce a certain amount of backward swing floating to eliminate the above-mentioned meshing error. When the second motor 41 drives the first gear 42 to rotate, the torsion spring 35 will generate a reset thrust on the arm 32. Therefore, after the second gear 23 and the first gear 42 rotate and contact, they will quickly enter the meshing state to achieve transmission. In this way, through the movement amount of the arm 32, the second gear 23 and the first gear 42 achieve flexible meshing, and at the same time, the arm 32 is prevented from being bent by force to ensure that the second gear 23 and the first gear 42 achieve stable contact transmission.

[0066] As described above, in order to achieve the flexible meshing of the second gear 23 and the first gear 42, the arm 32 is designed to be floating. However, during the actual rotation drive of the pipe fitting 21, considering that the arm 32 has a certain floating amount, there may be a meshing gap between the second gear 23 and the first gear 42 during rotation, resulting in an unstable meshing problem. Therefore, in order to ensure the stability of the pipe fitting 21 after swinging into place, in this embodiment, the clamping assembly 5 is used to lock and limit the pipe fitting 21 with the second gear 23 in the correct meshing position.

[0067] Refer to Figure 6 、 Figure 7 , preferably, the clamping assembly 5 includes a guide rod 51 fixed on the bracket.

[0068] A threaded section 52 is fixed to the shaft end of the second motor 41. A sliding seat 53 is threadedly connected to the outer side of the threaded section 52. The sliding seat 53 and the guide rod 51 are arranged in a penetrating and sliding manner, and the guide rod 51 guides the linear movement of the sliding seat 53. Specifically, a push seat 54 slides horizontally on the upper end of the sliding seat 53. In this embodiment, a slotted cross recess can be opened on the side of the push seat 54, and a guiding member connected to the sliding seat 53 is arranged in the slotted cross recess, so as to realize the lateral position guiding of the push seat 54.

[0069] A first spring 55 is fixedly connected between the push seat 54 and the sliding seat 53, and a limiting post 56 is fixedly installed at the outer end of the push seat 54.

[0070] A clamping disc 57 is fixedly connected to the outer side of the pipe fitting 21. An annular groove 58 adapted to the limiting post 56 is provided on the end face of the clamping disc 57. A stop platform is fixedly installed at the shaft end of the second motor 41, and a return spring 59 is arranged between the stop platform and the sliding seat 53.

[0071] When the pipe fitting 21 swings in place, the second motor 41 drives the first gear 42 to rotate to implement the correct meshing state of the second gear 23 and the first gear 42.

[0072] Since there is a threaded section 52 at the shaft end of the second motor 41, when the shaft end of the second motor 41 rotates, it will also drive the sliding seat 53 to move toward the side of the first gear 42.

[0073] The second gear 23 and the first gear 42 continue to mesh to drive the pipe fitting 21 to rotate and clean, while the sliding seat 53 will slide away from the above-mentioned threaded section 52 and reach the smooth section of the shaft of the second motor 41. At this time, the sliding seat 53 cannot move further horizontally. At the same time, the limiting post 56 on the push seat 54 at its upper end will be clamped in the annular groove 58 of the clamping disc 57. Under the clamping and limiting of the limiting post 56 and the clamping disc 57, the swinging angle of the pipe fitting 21 can be limited, so as to eliminate the influence of the floating amount of the arm 32 and ensure that the pipe fitting 21 is always in a fixed position, and at the same time, the second gear 23 and the first gear 42 are stably meshed.

[0074] On the contrary, after the operation is completed, the shaft end of the second motor 41 rotates several weeks first. At this time, under the push of the return spring 59, the sliding seat 53 has a tendency to move backward until it starts to move backward after being threadedly connected to the threaded section 52. At this time, the limiting post 56 disengages from the annular groove 58 of the clamping disc 57 to complete the unlocking, and the first motor 31 drives the pipe fitting 21 to swing and store inward to the inner side of the bending plate 11 through the arm 32.

[0075] Refer to Figure 3 、 Figure 10 、 Figure 11, in some embodiments, the present invention further includes a flue cleaning assembly 6 installed in the flue 10;

[0076] The flue cleaning assembly 6 includes a third motor 61 fixed in the flue 10 through a bracket. A hollow tube 62 is fixedly installed at the shaft end of the third motor 61. A cleaning component is arranged in the hollow tube 62, and an air inlet hole 621 is formed on the end face of the hollow tube 62.

[0077] Refer to Figure 11 , specifically, the cleaning component includes a piston plate 63 slidably connected in the hollow tube 62. The piston plate 63 is circumferentially locked with the hollow tube 62, and a second spring 67 is fixedly connected between the piston plate 63 and the hollow tube 62;

[0078] A hollow column 64 is fixedly installed at the bottom of the piston plate 63. An air passage 65 communicating with the hollow tube 62 is formed between the inside of the hollow column 64 and the piston plate 63. Spray holes 66 are obliquely formed on the outer side of the hollow column 64.

[0079] That is to say, in the present invention, a flue cleaning assembly 6 is further provided inside the flue 10. Of course, considering the space problem in the flue 10, in this application, the flue cleaning assembly 6 adopts an up-and-down telescopic storage and protection design. Specifically, in this embodiment, the hollow tube 62 is also connected to an external steam generating device through a rotary joint, and the outlet of the rotary joint is communicated with the air inlet hole 621;

[0080] When in the cleaning working condition, high-temperature and high-pressure steam enters the inside of the hollow tube 62 along the air inlet hole 621. The high pressure of the steam pushes the piston plate 63 to move downward. At this time, the piston plate 63 drives the hollow column 64 to move downward, and exposes the spray holes 66 under the hollow tube 62. When the third motor 61 drives the hollow tube 62 to rotate, the entire hollow column 64 will also rotate synchronously to achieve the purpose of rotating and spraying steam, so as to achieve the cleaning effect of the flue 10;

[0081] On the contrary, after the cleaning is completed, the piston plate 63 is pulled upward by the second spring 67 to reset. The hollow column 64 enters the inside of the hollow tube 62, and the bottom of the hollow column 64 closes the bottom opening of the hollow tube 62, so as to achieve the purpose of protecting the spray holes 66.

[0082] Refer to Figure 3 , Figure 5 , in some embodiments, considering that the sewage dropped during the cleaning of the flue cleaning assembly 6 will flow downward, in order to prevent the downward-flowing sewage from polluting the pipe fitting 21 and interfering with the steam sprayed by the pipe fitting 21, a blocking assembly 7 is further provided inside the machine shell 1 in the present invention;

[0083] The barrier assembly 7 includes a fourth motor 71 installed in the housing 1 through a bracket, and a baffle 72 is slidably connected to the upper end of the housing 1. The baffle 72 can cover the lower part of the communication opening of the flue 10, and a guide port 70 is opened on the end surface of the baffle 72;

[0084] A sleeve 73 is fixedly installed on the side of the baffle 72, a screw rod 74 is rotatably connected to the inner top of the housing 1, the screw rod 74 is threadedly connected to the sleeve 73, and the fourth motor 71 and the screw rod 74 are transmission-connected via a transmission structure 75.

[0085] In an optional embodiment, the transmission structure 75 described in the present invention can be set as a synchronous wheel and a synchronous belt assembly, and of course can also be set as a sprocket and chain assembly. Such transmission methods are conventional means for technicians in the relevant field and will not be elaborated here.

[0086] That is to say, in this embodiment, the barrier component 7 is designed to form separate cleaning chambers inside the casing 1 and the flue 10, and the cleaning operations in the two chambers are performed independently without interference. Specifically, when in the cleaning condition, the fourth motor 71 drives the screw rod 74 to rotate through the transmission structure 75, and the baffle 72 is driven to move laterally by means of the threaded connection between the screw rod 74 and the sleeve 73. When the baffle 72 moves laterally to the connecting port of the casing 1 and the flue 10, a barrier is formed.

[0087] Of course, in order to ensure that the sewage cleaned by the flue 10 can be discharged smoothly, in this embodiment, a guide port 70 is opened on the end surface of the baffle 72, and the sewage during cleaning can be discharged downward along the guide port 70.

[0088] like Figure 12 As shown, the above descriptions are all based on an example of a single first motor 31 driving the swing and a single second motor 41 driving the rotation. Considering the force stability at both ends of the pipe 21, the present invention can also symmetrically design two of the above-mentioned first motor 31 and second motor 41 structures, and achieve the driving stability of both ends of the pipe 21 through two first motors 31 and second motors 41.

[0089] Reference Figure 9 In addition, in order to realize the diversion of sewage discharged from the diversion port 70, the bending plate 11 in this embodiment includes a front plane 111 connected to a rear plane 112 at the rear side of the front plane 111 and two slopes 113;

[0090] The two slopes 113 are connected to both sides of the rear plane 112 , and the bottom of the slopes 113 is connected to the rear plane 112 , wherein the middle of the rear plane 112 has a drain port 114 that is opposite to the guide port 70 in the upper and lower directions.

[0091] That is to say, in this embodiment, the design of two slopes 113 is adopted at the rear side of the bending plate 11 for guiding sewage. The sewage discharged from the flue 10 flows downward from the diversion port 70, and finally discharges and drops downward along the liquid discharge port 114 of the bending plate 11, thus completing the sewage discharge operation of the flue 10.

[0092] In summary, in the present invention, the spray head assembly 2 is set to be swingable so that it can swing outwards from the inside of the bending plate 11 in the cleaning mode. Under normal working conditions, the spray head assembly 2 is accommodated inside the bending plate 11, and the bending plate 11 provides shielding and protection to effectively prevent the spray head assembly 2 from being exposed to high temperature and oil fume, thereby significantly improving its durability. At the same time, a flue cleaning assembly 6 is also designed for the flue 10 to achieve comprehensive cleaning of the casing 1 and the flue 10, thus providing a reliable and convenient kitchenware cleaning solution.

[0093] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A range hood based on steam self-cleaning, characterized in that: include: A casing (1) connected to a flue (10); A nozzle assembly (2) and a swing assembly (3) for swinging the nozzle assembly (2) are arranged inside the housing (1); a bending plate (11) is also fixed to the inner side of the housing (1); the nozzle assembly (2) is accommodated in a space formed by the bending plate (11) and the inner wall of the housing (1); A driving assembly (4) is also installed inside the housing (1), and the driving assembly (4) is used to drive the nozzle assembly (2) flipped on the outside of the bending plate (11) to rotate.

2. A range hood based on steam self-cleaning according to claim 1, characterized in that: The nozzle assembly (2) comprises a pipe (21) and a plurality of nozzles (22) arranged outside the pipe (21); The pipe (21) is placed horizontally in a chamber inside the casing (1).

3. A range hood based on steam self-cleaning according to claim 2, characterized in that: The swing assembly (3) comprises a first motor (31) fixed inside the housing (1) via a bracket, an arm (32) being connected to an axial end of the first motor (31), and a distal end of the arm (32) being fixedly connected to the pipe (21); The end surface of the bending plate (11) is provided with an escape opening (12) for accommodating the arm (32), and a floating structure is provided between the arm (32) and the shaft end of the first motor (31).

4. A range hood based on steam self-cleaning according to claim 3, characterized in that: The floating structure comprises a key (33) embedded in the first motor (31); A notch groove (34) is provided in the inner hole of the arm (32), and the key (33) can slide circumferentially in the notch groove (34), wherein a torsion spring (35) is fixedly connected between the shaft end of the first motor (31) and the arm (32).

5. The range hood based on steam self-cleaning according to claim 2, characterized in that: The driving assembly (4) comprises a second motor (41) fixed inside the housing (1) via a bracket, a first gear (42) fixedly mounted on the shaft end of the second motor (41), a second gear (23) fixed on the outer side of the pipe (21), and the first gear (42) and the second gear (23) meshingly drive each other; The bracket is provided with a clamping assembly (5) for positioning the pipe (21).

6. The range hood based on steam self-cleaning according to claim 5, characterized in that: The clamping assembly (5) comprises a guide rod (51) fixed on a bracket; A threaded section (52) is fixed on the shaft end of the second motor (41), and a sliding seat (53) is threadedly connected to the outer side of the threaded section (52), and the sliding seat (53) and the guide rod (51) are inserted and slidably arranged, wherein a pushing seat (54) is slidably arranged on the upper end of the sliding seat (53), and a first spring (55) is fixedly connected between the pushing seat (54) and the sliding seat (53), and a limiting column (56) is fixedly installed on the outer end of the pushing seat (54); A clamping disk (57) is fixedly connected to the outer side of the pipe (21), and an annular groove (58) adapted to the limiting column (56) is provided on the end surface of the clamping disk (57). A stop platform is fixedly installed on the shaft end of the second motor (41), and a return spring (59) is provided between the stop platform and the slide seat (53).

7. The range hood based on steam self-cleaning according to claim 1, characterized in that: Also included is a flue cleaning assembly (6) installed in the flue (10); The flue cleaning assembly (6) comprises a third motor (61) fixed in the flue (10) via a bracket, a hollow tube (62) fixedly mounted on the shaft end of the third motor (61), a cleaning component being arranged in the hollow tube (62), and an air inlet hole (621) being provided on the end surface of the hollow tube (62).

8. The range hood based on steam self-cleaning according to claim 7, characterized in that: The cleaning component comprises a piston plate (63) slidably connected in the hollow tube (62), the piston plate (63) and the hollow tube (62) are circumferentially locked, and a second spring (67) is fixedly connected between the piston plate (63) and the hollow tube (62); A hollow column (64) is fixedly mounted at the bottom of the piston plate (63), an air passage (65) connected to the hollow tube (62) is formed between the interior of the hollow column (64) and the piston plate (63), and an air injection hole (66) is obliquely opened on the outer side of the hollow column (64).

9. The range hood based on steam self-cleaning according to claim 3, characterized in that: A barrier component (7) is also provided inside the housing (1); The barrier assembly (7) comprises a fourth motor (71) mounted in the housing (1) via a bracket, a baffle (72) is slidably connected to the upper end of the housing (1), the baffle (72) can cover the lower portion of the connecting opening of the flue (10), and a guide port (70) is provided on the end surface of the baffle (72); A sleeve (73) is fixedly mounted on the side of the baffle (72), a screw rod (74) is rotatably connected to the inner top of the housing (1), the screw rod (74) and the sleeve (73) are threadedly connected, and the fourth motor (71) and the screw rod (74) are transmission-connected via a transmission structure (75).

10. The range hood based on steam self-cleaning according to claim 9, characterized in that: The bending plate (11) comprises a front plane (111), a rear plane (112) connected to the rear side of the front plane (111), and two slope surfaces (113); The two slope surfaces (113) are connected to both sides of the rear plane (112), and the bottom of the slope surface (113) is connected to the rear plane (112), wherein the middle part of the rear plane (112) has a liquid discharge port (114) which is opposite to the guide port (70) in upper and lower directions.

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