A range hood with a cleaning function and a cleaning method thereof

Abstract

The present application belongs to the technical field of range hood, and discloses a range hood with cleaning function and a cleaning method thereof; comprising: a shell with an openable or closable air outlet and an air inlet; a suction device arranged in the shell, comprising a volute and a fan, the fan being installed in the volute; the inner wall of the volute and / or the inner wall of the shell is provided with a hydrophilic coating; a cleaning device comprising a steam generator, the steam generator passes steam into the shell; a control device for sensing the steam in the shell to reach a preset pressure or a preset time to control the operation of the fan. The present application has the advantages that the range hood can clean oil stains completely without oil stain residues.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood with a cleaning function and a cleaning method thereof. Background Art

[0002] The existing range hood cleaning principle is: by passing steam into the range hood, the high-temperature steam will melt the oil stains adhering to the inner wall of the range hood, and at the same time the steam condenses into liquid water, and the melted oil stains are discharged with the water flow; however, the oil stains are not cleaned thoroughly, and residual oil stains may still adhere to the inner wall of the range hood after cleaning, leaving obvious oil marks, which are difficult to remove.

[0003] For example, the application number "CN108561919A" discloses a range hood and a cleaning method thereof, wherein the range hood includes: a volute; an impeller assembly disposed within the volute; a fume hood disposed at the lower end of the impeller assembly; a cleaning atomizing device disposed within the range hood and including: a cleaning liquid box disposed within the fume hood, the cleaning liquid box defining a chamber for containing cleaning liquid; an atomizing nozzle disposed on the volute and facing the impeller assembly; a pump body disposed within the fume hood for supplying cleaning liquid to the atomizing nozzle; and a steam cleaning device disposed on the range hood to clean dissolved and softened oil stains on the impeller assembly. By combining the steam cleaning device with the cleaning atomizing device, the cleaning atomizing device is first used to dissolve and soften the oil stains on the impeller assembly, and then the steam cleaning device is used to clean the impeller assembly. The above range hoods require a cleaning atomizer to dissolve and soften the oil stains, and then a steam cleaning device to clean the impeller assembly. The two must be combined to complete the cleaning. The range hood has many parts and a complex structure, and it is difficult for the cleaning device to clean every corner of the range hood.

[0004] In order to solve the deficiencies of the prior art, it is necessary to design a range hood that cleans thoroughly and has a simple structure. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and to provide a range hood with a cleaning function and a cleaning method thereof.

[0006] The technical solution adopted by the present invention to solve the technical problem is to provide a range hood with a cleaning function and a cleaning method thereof. The range hood with a cleaning function is characterized by comprising:

[0007] a housing having an air outlet and an air inlet that can be opened or closed;

[0008] A suction device is provided in the housing and includes a volute and a fan, wherein the fan is installed in the volute; an inner wall of the volute and / or an inner wall of the housing is provided with a hydrophilic coating;

[0009] The cleaning device includes a steam generator, wherein the steam generator passes steam into the housing;

[0010] The control device is used to control the operation of the fan when the steam introduced into the shell reaches a preset pressure or a preset time.

[0011] In the above range hood with a cleaning function, it further includes a smoke collecting hood, which is arranged below the shell and communicates with the air inlet;

[0012] The smoke collecting hood comprises a main collecting area at the front side and an auxiliary collecting area at the rear side.

[0013] In the above-mentioned range hood with a cleaning function, it also includes an air guide tube connected to the air outlet to control the connection and closing of the air outlet with the outside world.

[0014] In the above-mentioned range hood with a cleaning function, the air guide tube includes a wind tube and two fan blades. The wind tube is connected to the air outlet, and the two fan blades are hinged in the wind tube through pins.

[0015] In the above-mentioned range hood with a cleaning function, a rectifying device is further included for controlling the amount of oil smoke entering the suction device;

[0016] The rectifier device includes a rectifier plate and a push plate assembly; the rectifier plate is located below the air inlet, and the push plate assembly is connected to the rectifier plate to control the opening between the rectifier plate and the air inlet.

[0017] In the above-mentioned range hood with a cleaning function, the push plate assembly includes a rotating frame, a push rod, a support rod and a power member;

[0018] The support rod is fixed on the smoke hood, the middle part of the rotating frame is hinged on the support rod, the power piece is hinged on the head of the rotating frame, one end of the push rod is hinged on the tail of the rotating frame, and the other end is connected to the rectifier plate.

[0019] In the above-mentioned range hood with a cleaning function, an inclined oil collecting plate is formed at the lower portion of the volute, an oil collecting box is provided below the oil collecting plate, and the oil collecting box is detachably mounted on the smoke hood.

[0020] A method for cleaning a range hood having a cleaning function, comprising:

[0021] S1, close both the air inlet and outlet;

[0022] S2. Continuously introduce steam into the shell to fill the entire shell; the steam reacts with the oil stains attached to the hydrophilic coating on the inner wall of the shell and the inner wall of the volute to form an emulsion that falls off;

[0023] S3. After the preset time is reached, the fan automatically starts to operate and the air outlet opens; the oil residue on the impeller is thrown out and the excess steam is discharged from the air outlet.

[0024] In the above-mentioned method for cleaning a range hood with a cleaning function, the air inlet is closed in S1 by pushing the push plate assembly to pull the rectifier plate below the air inlet to block the air inlet.

[0025] In the above-mentioned method for cleaning a range hood with a cleaning function, the preset time in S3 is 3-5 minutes after the steam is introduced into the shell.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The inner wall of the housing and the inner wall of the volute of the range hood of the present invention are provided with a hydrophilic coating. The hydrophilic coating has a strong ability to bind water molecules, so the condensation rate of water vapor is greatly improved. At the same time, water has a replacement effect on the oil stains adhering to the inner wall of the housing and the inner wall of the volute. Therefore, the oil stains will quickly combine with the condensed water on the surface of the hydrophilic coating to form an emulsion, which will flow downward along the inner wall of the volute and the inner wall of the inner shell and be discharged into the oil collection box and the oil collection cavity, achieving the purpose of thorough cleaning and no residual oil stains.

[0028] 2. When cleaning the range hood, the air outlet and air inlet are closed to form a closed space. Steam is continuously passed into the shell, and the steam fills the entire closed space to achieve the steaming effect, making it easier to clean every corner of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of oil stains attached to the surface of the hydrophilic coating;

[0030] Figure 2 Schematic diagram of the water-to-oil replacement effect on the hydrophilic coating surface;

[0031] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the overall structure of the present invention after the outer shell and the housing are cut away;

[0033] Figure 5 This is a structural schematic diagram of the range hood of the present invention installed on a wall and a wall cabinet;

[0034] Figure 6 This is a schematic diagram of the structure of the present invention after removing the outer shell;

[0035] Figure 7 This is a schematic diagram of the smoke hood structure;

[0036] Figure 8Schematic diagram of the rectifier plate structure;

[0037] Figure 9 This is a schematic diagram of the installation of the rectifier;

[0038] Figure 10 for Figure 9 Another perspective structural diagram;

[0039] Figure 11 This is a schematic diagram of the cleaning pipe layout;

[0040] Figure 12 This is a schematic diagram of the air guide duct blades in the open state.

[0041] In the figure, 1. shell; 11. outer shell; 2. suction device; 21. volute; 211. oil collecting plate; 22. fan; 3. cleaning device; 31. steam generator; 32. cleaning pipe; 33. pipe clamp; 34. water inlet pipe; 4. smoke collecting hood; 41. main collecting area; 42. auxiliary collecting area; 43. lighting lamp; 5. air guide tube; 51. air duct; 52. fan blade; 53. limit block; 6. rectifier; 61. rectifier plate; 62. push plate assembly; 621. rotating frame; 622. push rod; 623. support rod; 624. power part; 70. base material; 71. hydrophilic coating; 72. oil stain; 73. water; 8. oil collecting box; 90. wall cabinet; 91. wall. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.

[0043] like Figure 1-2 As shown, a hydrophilic coating 71 is provided on the surface of the substrate 70. When the oil stain 72 attached to the surface of the hydrophilic coating 71 encounters water 73, the water 73 replaces the oil stain 72 from the hydrophilic coating 71, forming an emulsion separation; after the oil stain 72 is discharged, no trace of the oil stain 72 will be left on the surface of the hydrophilic coating 71.

[0044] like Figure 3-12 As shown, a range hood with a cleaning function includes: a housing 1; a suction device 2; a cleaning device 3; a control device; a smoke hood 4; an air guide tube 5; and a rectifying device 6.

[0045] The shell 1 has an air outlet and an air inlet that can be opened or closed; and is wrapped with a shell 11.

[0046] The suction device 2 is arranged in the shell 1, and includes a volute 21 and a fan 22, and the fan 22 is installed in the volute 21; the inner wall of the volute 21 and / or the inner wall of the shell 1 is provided with a hydrophilic coating 71; an inclined oil collecting plate 211 is formed at the lower part of the volute 21, and an oil collecting box 8 is provided below the oil collecting plate 211. The oil collecting plate 211 is connected to the oil collecting box 8, which is convenient for draining the oil on the oil collecting plate into the oil collecting box 8; the oil collecting box 8 is detachably installed on the smoke hood 4, and a visual window is provided on the oil collecting box 8, which can identify the height of the oil liquid level in the oil collecting box 8. When there is too much oil, the oil collecting box 8 is removed and the oil is poured out.

[0047] The cleaning device 3 includes a steam generator 31, which passes steam into the shell 1; a water inlet pipe 34 is connected to the steam generator 31, and the water inlet pipe 34 is connected to the external water; the steam generator 31 passes steam into the shell 1 through a cleaning pipe 32, and the cleaning pipe 32 surrounds the circumference of the fan 22; and a plurality of nozzles are opened on the cleaning pipe 32.

[0048] The control device is used to sense that the steam introduced into the housing 1 reaches a preset pressure or a preset time, so as to control the operation of the fan 22; when the steam reaches the preset pressure or the preset time, the control device controls the operation of the fan 22.

[0049] The smoke collecting hood 4 is located below the housing 1 and communicates with the air inlet. It collects cooking fumes and directs them to the air inlet. The hood 4 includes a primary collecting area 41 at the front and an auxiliary collecting area 42 at the rear. The primary collecting area 41 collects more smoke than the auxiliary collecting area 42. The range hood is installed between the wall cabinet 90 and the wall 91, so any cooking fumes that have accumulated in the auxiliary collecting area 42 and haven't been drawn away have nowhere to escape. While the cooking fumes in the primary collecting area 41 are being drawn away, some of the cooking fumes in the auxiliary collecting area 42 are also drawn away directly from the auxiliary collecting area 42, while the remaining portion is transferred from the auxiliary collecting area 42 to the primary collecting area 41 and then drawn away.

[0050] The air guide tube 5 is connected to the air outlet to control the connection and closing of the air outlet with the outside world; the air guide tube 5 includes a wind tube 51 and two fan blades 52, the wind tube 51 is connected to the air outlet, and the two fan blades 52 are hinged in the wind tube 51 by pins; specifically, the wind tube 51 includes a circular opening at the top and a square opening at the bottom, and the square opening is connected to the air outlet; the two fan blades 52 are divided into left and right halves, forming a whole circle, which are blocked in the circular opening at the top of the wind tube 51. When the fan 22 is not started, the fan blades 52 are in a state of blocking the circular opening due to their own weight; and due to the one-way self-locking of the fan blades 52, the fan blades 52 cannot be opened from top to bottom, which can prevent small animals from entering the range hood through the air outlet duct. When the fan 22 is running, the two blades 52 open from bottom to top; preferably, limit blocks 53 are provided on the two blades 52 to prevent the two blades 52 from being sucked together when opening, resulting in the blades 52 being unable to return to their original position when the fan 22 is turned off.

[0051] The rectifier 6 controls the amount of oil smoke entering the suction device 2. It comprises a rectifier plate 61 and a push plate assembly 62. The rectifier plate 61 is located below the air inlet, near the auxiliary gathering area 42, and is recessed to form an oil collection chamber 611. The push plate assembly 62 is attached to the rectifier plate 61. The side of the rectifier plate 61 near the oil collection chamber 611 is removably connected to the push plate assembly 62 via a hook; the side away from the oil collection chamber 611 is removably connected via a latch 612. The push plate assembly 62 controls the opening between the rectifier plate 61 and the air inlet. The push plate assembly 62 includes a rotating frame 621, a push rod 622, a support rod 623 and a power piece 624; the support rod 623 is fixed on the smoke hood 4, the middle part of the rotating frame 621 is hinged on the support rod 623, the power piece 624 is hinged on the head of the rotating frame 621, one end of the push rod 622 is hinged on the tail of the rotating frame 621, and the other end is connected to the rectifier plate 6; the power piece 624 is a cylinder or an oil cylinder.

[0052] Preferably, a safety net is installed at the air inlet, located above the rectifier plate 61, to prevent large objects from being drawn into the range hood and to prevent the chef's hands or hair from entering the range hood. The cleaning pipe 32 is mounted around the fan 22 via multiple clamps 33. When the fan 22 is running, the cleaning pipe 32 is not affected by the vibration of the fan 22.

[0053] During operation, when the cleaning function is not needed, the power part 624 drives the rotating frame 621, driving the push rod 622, and the push rod 622 pushes the rectifier plate 61 to open the air inlet. During stir-frying, the main oil smoke is concentrated in the main gathering area 41 of the smoke hood 4. The opening of the rectifier plate 61 below the main gathering area 41 is greater than the opening below the auxiliary gathering area 42. The oil smoke is drawn away from the main gathering area 41 and the auxiliary gathering area 42 through the air inlet by the fan 22; the fan 22 blows open the fan blades 52 in the air guide tube 5, and the air outlet is connected to the outside world, and the oil smoke is discharged from the air outlet; since the oil smoke discharge volume in the main gathering area 41 is large, the oil smoke gathered in the auxiliary gathering area 42 also gradually flows to the main gathering area 41 and is drawn out by the fan 22.

[0054] When the cleaning function is turned on, the fan 22 is in a stationary state, the power part 624 drives the rotating frame 621, driving the push rod 622, and the push rod 622 pulls the rectifier plate 61 to close the air inlet. Since the fan 22 is in a stationary state, the fan blades 52 in the air guide tube 5 close the air outlet and are in a closed state; the steam generator 31 sprays steam from the nozzle through the cleaning pipe 32, and the steam reaches the inner wall of the shell 1 and the inner wall of the volute 21. The water vapor encounters the oil attached to the hydrophilic coating, forming an emulsion and separating, and flows into the oil collecting box 8, and a small part flows into the oil collecting chamber 611 of the rectifier plate 61; after the steam is introduced for 3-5 minutes, the fan 22 automatically starts to operate, and the oil remaining on the impeller of the fan 22 is thrown off, and the fan 22 blows open the fan blades 52 in the air guide tube 5, the air outlet is opened, and the excess steam is discharged from the air outlet; the steam does not stop running until the fan 22 stops running and the cleaning process is completed.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A range hood with a cleaning function, characterized in that: Includes: a housing having an air outlet and an air inlet that can be opened or closed; A suction device is provided in the housing and includes a volute and a fan, wherein the fan is installed in the volute; an inner wall of the volute and / or an inner wall of the housing is provided with a hydrophilic coating; The cleaning device includes a steam generator, wherein the steam generator passes steam into the housing; A control device for controlling the operation of the fan when the steam introduced into the shell reaches a preset pressure or a preset time; A smoke collecting hood is provided below the housing and is in communication with the air inlet; the smoke collecting hood comprises a main collecting area at the front and an auxiliary collecting area at the rear; A rectifier device is used to control the amount of oil smoke entering the suction device; the rectifier device includes a rectifier plate and a push plate assembly; the rectifier plate is located below the air inlet, and the push plate assembly is connected to the rectifier plate to control the opening between the rectifier plate and the air inlet; The air guide tube is connected to the air outlet to control the connection and closing of the air outlet with the outside world; The push plate assembly includes a rotating frame, a push rod, a support rod and a power piece; the support rod is fixed to the smoke hood, the middle part of the rotating frame is hinged to the support rod, the power piece is hinged to the head of the rotating frame, one end of the push rod is hinged to the tail of the rotating frame, and the other end is connected to the rectifier plate; During stir-frying, the power component can drive the rectifier plate to open wider below the main gathering area than in the auxiliary gathering area, so that the oil smoke can be drawn away from the main gathering area and the auxiliary gathering area through the air inlet by the fan, and the oil smoke gathered in the auxiliary gathering area can gradually flow to the main gathering area and be drawn out by the fan.

2. The range hood with cleaning function according to claim 1, characterized in that: The air guide tube comprises a wind tube and two fan blades. The wind tube is connected to the air outlet, and the two fan blades are hinged in the wind tube through pins.

3. The range hood with cleaning function according to claim 1, characterized in that: An inclined oil collecting plate is formed at the lower part of the volute, and an oil collecting box is arranged below the oil collecting plate. The oil collecting box is detachably mounted on the smoke hood.

4. A method for cleaning a range hood with a cleaning function, applied to the range hood with a cleaning function as claimed in any one of claims 1 to 3, characterized in that: include: S1, close both the air inlet and outlet; S2, continuously introduce steam into the shell until the steam fills the entire shell; The oil stains attached to the hydrophilic coating on the inner wall of the shell and the inner wall of the volute form an emulsion and fall off; S3. After the preset time is reached, the fan automatically starts to operate and the air outlet opens; the oil residue on the impeller is thrown out and the excess steam is discharged from the air outlet.

5. The method for cleaning a range hood with a cleaning function according to claim 4, characterized in that: The air inlet is closed in S1 by pushing the push plate assembly to pull the rectifier plate below the air inlet to block the air inlet.

6. The method for cleaning a range hood with a cleaning function according to claim 4, characterized in that: The preset time in S3 is 3-5 minutes after the steam is introduced into the shell.

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