CN110617515A - Cleaning method and cleaning structure of range hood - Google Patents
Cleaning method and cleaning structure of range hood Download PDFInfo
- Publication number
- CN110617515A CN110617515A CN201810631814.3A CN201810631814A CN110617515A CN 110617515 A CN110617515 A CN 110617515A CN 201810631814 A CN201810631814 A CN 201810631814A CN 110617515 A CN110617515 A CN 110617515A
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- impeller
- cleaning
- foam
- speed
- volute
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2057—Removing cooking fumes using a cleaning liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention relates to a cleaning method and a cleaning structure of a range hood, aiming at the characteristics of foam cleaning, firstly, a large amount of foam is uniformly covered on an impeller under the low-speed state of the impeller, and the low-speed cleaning is kept for a certain time, the foam soaks and decomposes oil stains on the impeller in the time, and a part of the foam is consumed; then, the rotating speed of the impeller is stepped to ensure that the foam on the impeller is gradually and uniformly distributed on the inner wall of the volute, so that the inner wall of the volute is soaked and decomposed; and then, the impeller and the inner wall of the volute are washed at low speed by using less water, residual detergent is absorbed, and finally the impeller is rotated and dried at high speed, so that the impeller is prevented from being corroded by water. The foam is always kept in a flowing state and completely covers the impeller in the cleaning process, so that the oil stain is fully infiltrated and decomposed, the foam is also kept to be infiltrated into each area of the inner wall of the volute in the cleaning process of the inner wall of the volute, the oil stain is fully decomposed by utilizing the foam tension, and the foam is washed by water to remove the oil stain, so that the cleaning effect is effectively improved.
Description
Technical Field
The invention relates to the technical field of cleaning of range hoods, in particular to a cleaning method and a cleaning structure of a range hood.
Background
The range hood is a household appliance for pumping away oil smoke generated by cooking on a cooking bench, but for most range hoods, a big problem lies in that: the volatile oil smoke can take place the condensation in range hood's inside, and oil can form thick and difficult abluent greasy dirt in the organism after mixing with impurity such as dust, granule, and after the greasy dirt accumulation reached the certain degree, can form the solid layer of compactness in range hood's inside, further increaseed the clean degree of difficulty.
The prior range hoods are generally required to be disassembled for cleaning, some range hoods in the prior art have a self-cleaning function, for example, the range hoods in the chinese patent application No. CN201280039582.3 with the publication number CN103732994B and the range hoods in the chinese patent application No. CN200780027956.9 with the publication number CN101495814B have a self-cleaning function, and these range hoods are provided with cleaning agent containers, pumps, spray nozzles and other parts inside the device for spraying the cleaning agent on the blades, the flow passages, the filter screen and other parts and removing the residual liquid after cleaning. In the structure in the prior art, the cleaning medium is generally a single cleaning medium such as steam (or water mist) and water, and when water is used as the cleaning medium, the water consumption is large, and the cleaning is difficult due to the fact that the water temperature is generally low; if steam is used as a cleaning medium, the steam can be attached to the surface of the oil stain to easily dissolve the oil stain, but the steam dissolved with the oil stain is difficult to flow down from the cleaned object, and a good cleaning effect is difficult to achieve.
In the prior art, the impeller and the volute are cleaned by adopting foam, but the properties of the foam, such as tension and the like of liquid such as water and the like are different, and the soaking of the foam on oil stains is often influenced by adopting the conventional cleaning method because the rotating speed of the impeller is too high, or the cleaning effect is influenced because the impeller cannot be in full contact with the foam.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a cleaning method of a range hood, which can improve the cleaning effect by reasonably controlling the contact time and flow rate of foam and oil stain.
The invention aims to solve another technical problem of providing a cleaning structure of a range hood, which can generate foam and is convenient to control the contact time and flow rate of the foam and oil stains, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a cleaning method of a range hood is characterized in that: comprises the following steps
(1) Enabling the impeller to run at a low speed, uniformly covering the washing liquid on the impeller in a foam form, rotating at the low speed along with the impeller, and stopping supplying after continuously supplying the foam for 20-60 s;
(2) the impeller keeps running at a low speed for 10-15 minutes, and oil stains dissolved in the process flow into the oil receiving groove along a flow channel of the smoke machine;
(3) carrying out stepped speed increase on the impeller, wherein the highest rotating speed is not more than 300 revolutions per minute, the whole speed increase process is completed within 1-4 minutes, and in the process, foam on the impeller is thrown onto the inner wall of the volute and/or the filter screen through gradually increasing centrifugal force, so that the inner wall of the volute and/or the filter screen is soaked and cleaned;
(4) the impeller is adjusted to a low speed and keeps running at the low speed, water is sprayed on the impeller, the water washes the washing liquid and the decomposed oil dirt on the inner wall of the impeller and the volute and/or the filter screen, and the dirt flows back to the oil receiving groove through the flow channel;
(5) regulating the impeller to high speed and keeping the high speed running, keeping the rotating speed above 1550 rpm, and spin-drying residual solvent and water on the impeller, and stopping running the impeller.
Preferably, the rotation speed of the low-speed operation in the step (1) is 20-30 rpm, and more preferably 25 rpm. With this rotation, the foam is mainly continuously covered on the impeller without falling from the impeller to the inner bottom wall of the volute.
Preferably, the washing liquid in the step (1) contains a weakly basic solvent and/or an emulsifier and/or a melting agent and/or a surfactant. The weak basic solvent and/or emulsifier and/or melting agent and/or surfactant are common substances in the prior art, and are mainly used for accelerating the dissolution of the foam into the oil stains.
As an improvement, the step-type speed increasing in the step (3) at least comprises the process of 20-30 turns/minute → 50-70 turns/minute → 100-140 turns/minute → 200-280 turns/minute. Preferably, the stepped speed increase in the step (3) is a process of 25 turns/minute → 60 turns/minute → 120 turns/minute → 240 turns/minute. If the stage-type speed increasing is not adopted, the foam is easy to be intensively thrown to a certain area of the inner wall of the volute, and the process of the invention mainly aims to ensure that the foam on the impeller is gradually and uniformly thrown to the inner wall of the volute under the action of centrifugal force, thereby fully infiltrating and decomposing the oil stain on the inner wall of the volute.
Preferably, the rotation speed of the low-speed operation in the step (4) is 20-30 revolutions per minute. The step is mainly to clean the washing liquid remained on the impeller and the inner wall of the volute by using less water sources.
A cleaning structure applied to the cleaning method of the range hood comprises a volute, an impeller, a motor and a cleaning assembly, wherein the impeller can be rotatably arranged in the volute, the motor is used for driving the impeller to rotate, and the cleaning structure is characterized in that: the cleaning assembly includes a spray head that extends into the volute and has an output end disposed toward the impeller.
In order to facilitate control, the cleaning assembly further comprises a water supply structure, a cleaning solution supply structure and a power structure, the water supply structure and the cleaning solution supply structure are connected with the spray head through a three-way valve, and the power structure is arranged on a connecting pipeline of the three-way valve and the spray head and provides power for conveying water/cleaning solution.
Preferably, the cleaning assembly further comprises a self-excited vibration generator capable of homogenizing the concentration of the fluid in the conduit, the self-excited vibration generator being provided on the conduit downstream of the power structure and arranged adjacent to the power structure. Because the washing liquid is easy to precipitate after being placed for a period of time, the structure can ensure that the concentration of the output washing liquid is uniform and the phase impeller can convey a stable amount of foam.
In order to facilitate control, the cleaning assembly further comprises a first valve and a second valve, the first valve is arranged on a pipeline between the water supply structure and the three-way valve and used for controlling whether water is supplied or not, and the second valve is arranged on a pipeline between the cleaning liquid supply structure and the three-way valve and used for controlling whether cleaning liquid is supplied or not.
In above-mentioned each preferred scheme, the shower nozzle includes feed liquor section and diffuser, the output of feed liquor section is connected with the input of diffuser, the internal diameter of diffuser is crescent from input to output, the junction of feed liquor section output and diffuser input is provided with a baffle, and open at the middle part of this baffle has the impact mouth that supplies liquid to pass through and improve the liquid velocity of flow, thereby the output department of diffuser is provided with and can carry out the filter screen that strikes and smugglies the bubble secretly in making the output liquid to the output liquid. Adopt such structure, when liquid through the baffle, because the liquid outlet sharply dwindles for liquid velocity of flow increases rapidly, and liquid impacts on the filter screen with great velocity of flow, because the filter screen outside is the air, can make liquid produce cavitation, forms a large amount of bubbles in liquid, to the detergent, can produce a large amount of foams, and to water, can increase the bubble volume that aquatic carried, improves the degree of peeling off of water to the greasy dirt.
Preferably, the inner diameter of the front section of the impact port is consistent in front and back, and the inner diameter of the rear section of the impact port is gradually enlarged along the liquid output direction. The impact port on the partition board enables the liquid outlet flow rate to be increased sharply, liquid turbulence is easily caused, and by adopting the structure, the output direction of the fluid is guided to a certain degree, liquid turbulence can be avoided, and the stability of liquid output is improved.
As an improvement, the output end of the diffusion section is provided with a contraction section which extends along the axial direction of the diffusion section and gradually reduces the inner diameter. Preferably, an included angle between the peripheral wall of the contraction section and the filter screen is 40-50 degrees, and the length of the contraction section in the axial direction is 5-10 mm. If not set up above-mentioned shrink section, the oil flue gas stream of flue can lead to the shower nozzle to block up along the shower nozzle outer wall entering diffusion zone easily, and adopts above-mentioned structure, and oil flue gas stream forms the vortex in the outer wall department of shrink section after the diffusion zone and leaves, has avoided the shower nozzle to block up.
Compared with the prior art, the invention has the advantages that: aiming at the characteristics of foam cleaning, firstly, a large amount of foam is uniformly covered on an impeller in a low-speed state of the impeller, and the low-speed cleaning is kept for a certain time, the foam soaks and decomposes oil stains on the impeller in the time, and a part of the foam is consumed; then, the rotating speed of the impeller is stepped to ensure that the foam on the impeller is gradually and uniformly distributed on the inner wall of the volute, so that the inner wall of the volute is soaked and decomposed; and then, the impeller and the inner wall of the volute are washed at low speed by using less water, residual detergent is absorbed, and finally the impeller is rotated and dried at high speed, so that the impeller is prevented from being corroded by water. The invention ensures that the foam is always in a flowing state and completely covers the impeller in the whole cleaning process of the impeller, thereby fully infiltrating and decomposing the oil stain, and the cleaning of the inner wall of the volute also keeps the foam to infiltrate into each area of the inner wall of the volute, thus being beneficial to fully decomposing the oil stain by utilizing the foam tension, further flushing and removing the oil stain by water and effectively improving the cleaning effect.
Drawings
FIG. 1 is a schematic view of a cleaning assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the showerhead of FIG. 1;
fig. 3 is a schematic view of a matching structure of a blower and a nozzle in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
the cleaning method of the range hood of the embodiment comprises the following steps:
(1) making the impeller rotate at a low speed of 25 revolutions per minute, uniformly covering the washing liquid on the impeller in a foam form, rotating the washing liquid along with the impeller at the low speed of 25 revolutions per minute, and stopping supplying the foam after continuously supplying the foam for 30 s; the washing liquid contains a weakly alkaline solvent, an emulsifier, a melting agent and a surfactant;
(2) the impeller is kept to run at a low speed of 25 revolutions per minute for 10-15 minutes, and the oil stain dissolved in the process flows into the oil receiving groove along the flow channel of the smoke machine;
(3) the impeller is subjected to stepped speed increase, so that the rotating speed of the impeller is gradually transited from 25 turns/minute → 60 turns/minute → 120 turns/minute → 240 turns/minute, and the whole speed increase process is completed within 2 minutes, in the process, foam on the impeller is thrown onto the inner wall of the volute and the filter screen through gradually increasing centrifugal force, and further the inner wall of the volute and the filter screen are soaked and cleaned;
(4) the impeller is adjusted to the low speed of 25 revolutions per minute and keeps running at the low speed, water is sprayed on the impeller, the water washes the impeller, the inner wall of the volute, washing liquid on the filter screen and decomposed oil dirt, the dirt flows back to the oil receiving groove through the flow channel, and the washing process of the water lasts for 2 minutes;
(5) and (3) regulating the impeller to a high speed and keeping the high speed to operate, keeping the rotating speed at 1700 rpm, and stopping the operation of the impeller after the residual solvent and water on the impeller are dried.
As shown in fig. 1 to 3, the cleaning structure applied to the cleaning method of the range hood in the embodiment includes a volute 1, an impeller 2, a motor and a cleaning assembly 3, wherein the impeller 2 is rotatably disposed in the volute 1, and the motor is used for driving the impeller 2 to rotate.
The cleaning assembly 3 comprises a spray head 31, a water supply structure 32, a washing liquid supply structure 33, a power structure 34, a self-excited vibration sound generator 35, a first valve 36 and a second valve 37, wherein the spray head 31 extends into the volute 1 and the output end is arranged towards the impeller 2. The water supply structure 32 and the cleaning solution supply structure 33 are both tanks capable of storing liquid, the water supply structure 32 and the cleaning solution supply structure 33 are connected with the spray head 31 through a three-way valve 38, and the power structure is a water pump, is arranged on a connecting pipeline of the three-way valve 38 and the spray head 31 and provides power for conveying water and cleaning solution. A self-excited vibration sound generator 35 is used to homogenize the fluid concentration in the piping, and the self-excited vibration sound generator 35 is provided on the piping downstream of the power structure 34 and disposed adjacent to the power structure 34. Because the washing liquid is easy to precipitate after being placed for a period of time, the structure can ensure that the concentration of the output washing liquid is uniform and the phase impeller can convey a stable amount of foam. The first valve 36 is provided on a pipe between the water supply structure 32 and the three-way valve 38 and controls whether water is supplied, and the second valve 37 is provided on a pipe between the washing liquid supply structure 33 and the three-way valve 38 and controls whether washing liquid is supplied.
The spray head 31 of the embodiment includes a liquid inlet section 311 and a diffusion section 312, an output end of the liquid inlet section 311 is connected with an input end of the diffusion section 312, an inner diameter of the diffusion section 312 is gradually increased from the input end to the output end, a partition 313 is arranged at a connection position of the output end of the liquid inlet section 311 and the input end of the diffusion section 312, an impact port 314 for liquid to pass through and improving a liquid flow rate is formed in the middle of the partition 313, the inner diameter of a front section of the impact port 314 is consistent, and the inner diameter of a rear section of the impact port 314 is gradually enlarged along a. The output end of the diffuser section 312 is provided with a screen 315 that impinges on the output fluid to entrain air bubbles in the output fluid. When liquid passes through the partition 313, the liquid flow rate is rapidly increased due to the sharp reduction of the liquid outlet, the liquid impacts the filter screen 315 at a high flow rate, the outside of the filter screen 315 is air, so that the liquid generates cavitation, a large amount of bubbles are formed in the liquid, a large amount of foams are generated for a detergent, the amount of bubbles carried in water is increased for water, and the stripping degree of the oil stain by the water is improved. The impact port on the partition 313 sharply increases the outflow velocity, which easily causes liquid turbulence, and the impact port 314 guides the output direction of the fluid to a certain extent, thereby avoiding liquid turbulence and improving the stability of liquid output.
The output end of the diffuser section 312 is provided with a contraction section 316 extending in the axial direction of the diffuser section 312 and having an inner diameter gradually decreasing. The included angle a between the peripheral wall of the contraction section 316 and the filter screen 315 is 40-50 degrees, and the length of the contraction section 316 in the axial direction is 5-10 mm. If the contraction section 316 is not arranged, the oil fume flow of the flue can enter the diffusion section 312 along the outer wall of the spray head 31, so that the spray head 31 is easily blocked, and by adopting the structure, the oil fume flow forms vortex separation at the outer wall of the contraction section 316 after passing through the diffusion section 312, so that the blockage of the spray head 31 is avoided.
Example 2:
the cleaning method of the range hood of the embodiment comprises the following steps:
(1) making the impeller run at a low speed of 20 revolutions per minute, uniformly covering the washing liquid on the impeller in the form of foam, rotating the washing liquid along with the impeller at the low speed of 20 revolutions per minute, and stopping the supply of the foam after continuously supplying the foam for 20 seconds; the washing liquid contains a weakly alkaline solvent, an emulsifier, a melting agent and a surfactant;
(2) the impeller is kept to run at a low speed of 20 revolutions per minute for 10-15 minutes, and the oil stain dissolved in the process flows into the oil receiving groove along the flow channel of the smoke machine;
(3) the impeller is subjected to stepped speed increase, so that the rotating speed of the impeller is gradually transited from 20 turns/minute → 50 turns/minute → 100 turns/minute → 200 turns/minute, and the whole speed increase process is completed within 4 minutes, in the process, foam on the impeller is thrown onto the inner wall of the volute and the filter screen through gradually increasing centrifugal force, and further the inner wall of the volute and the filter screen are soaked and cleaned;
(4) the impeller is adjusted to a low speed of 20 revolutions per minute and keeps running at the low speed, water is sprayed on the impeller, the water washes the impeller, the inner wall of the volute, washing liquid on the filter screen and decomposed oil dirt, the dirt flows back to the oil receiving groove through the flow channel, and the washing process of the water lasts for 3 minutes;
(5) and regulating the impeller to high speed and keeping the high speed to operate, keeping the rotating speed at 1550 rpm, and spin-drying residual solvent and water on the impeller to stop the operation of the impeller.
Example 3:
the cleaning method of the range hood of the embodiment comprises the following steps:
(1) making the impeller run at low speed of 30 r/min, uniformly covering the washing liquid on the impeller in the form of foam, rotating the washing liquid along with the impeller at low speed of 30 r/min, and stopping supplying the foam after continuously supplying for 20 s; the washing liquid contains a weakly alkaline solvent, an emulsifier, a melting agent and a surfactant;
(2) the impeller is kept to run at a low speed of 30 revolutions per minute for 10-15 minutes, and the oil stain dissolved in the process flows into the oil receiving groove along the flow channel of the smoke machine;
(3) the impeller is subjected to stepped speed increase, so that the rotating speed of the impeller is gradually transited from 30 turns/minute → 70 turns/minute → 140 turns/minute → 280 turns/minute, and the whole speed increase process is completed within 1 minute, and in the process, foam on the impeller is thrown onto the inner wall of the volute and the filter screen through gradually increasing centrifugal force, so that the inner wall of the volute and the filter screen are soaked and cleaned;
(4) the impeller is adjusted to a low speed of 30 revolutions per minute and keeps running at the low speed, water is sprayed on the impeller, the water washes the impeller, the inner wall of the volute, washing liquid on the filter screen and decomposed oil stains, the dirt flows back to the oil receiving groove through the flow channel, and the washing process of the water lasts for 2 minutes;
(5) and (3) regulating the impeller to a high speed and keeping the high speed to operate, keeping the rotating speed at 1700 rpm, and stopping the operation of the impeller after the residual solvent and water on the impeller are dried.
Claims (15)
1. A cleaning method of a range hood is characterized in that: comprises the following steps
(1) Enabling the impeller to run at a low speed, uniformly covering the washing liquid on the impeller in a foam form, rotating at the low speed along with the impeller, and stopping supplying after continuously supplying the foam for 20-60 s;
(2) the impeller keeps running at a low speed for 10-15 minutes, and oil stains dissolved in the process flow into the oil receiving groove along a flow channel of the smoke machine;
(3) carrying out stepped speed increase on the impeller, wherein the highest rotating speed is not more than 300 revolutions per minute, the whole speed increase process is completed within 1-4 minutes, and in the process, foam on the impeller is thrown onto the inner wall of the volute and/or the filter screen through gradually increasing centrifugal force, so that the inner wall of the volute and/or the filter screen is soaked and cleaned;
(4) the impeller is adjusted to a low speed and keeps running at the low speed, water is sprayed on the impeller, the water washes the washing liquid and the decomposed oil dirt on the inner wall of the impeller and the volute and/or the filter screen, and the dirt flows back to the oil receiving groove through the flow channel;
(5) regulating the impeller to high speed and keeping the high speed running, keeping the rotating speed above 1550 rpm, and spin-drying residual solvent and water on the impeller, and stopping running the impeller.
2. The method of cleaning a range hood as defined in claim 1, wherein: the rotating speed of the low-speed operation in the step (1) is 20-30 revolutions per minute.
3. The method of cleaning a range hood as defined in claim 1, wherein: the rotating speed of the low-speed operation in the step (1) is 25 revolutions per minute.
4. The method of cleaning a range hood as defined in claim 1, wherein: the washing liquid in the step (1) contains a weak alkaline solvent and/or an emulsifier and/or a melting agent and/or a surfactant.
5. The method of cleaning a range hood as defined in claim 1, wherein: the step-type speed increasing in the step (3) at least comprises the process of 20-30 turns/min → 50-70 turns/min → 100-140 turns/min → 200-280 turns/min.
6. The method of cleaning a range hood according to claim 5, wherein: the step-type speed increasing in the step (3) is a process of 25 turns/minute → 60 turns/minute → 120 turns/minute → 240 turns/minute.
7. The method of cleaning a range hood as defined in claim 1, wherein: and (4) the rotating speed of the low-speed operation in the step (4) is 20-30 revolutions per minute.
8. A cleaning structure applied to the cleaning method of the range hood recited in any one of claims 1 to 7, comprising a volute (1), an impeller (2), a motor and a cleaning component (3), wherein the impeller (2) is rotatably disposed in the volute (1), and the motor is used for driving the impeller (2) to rotate, characterized in that: the cleaning assembly (3) comprises a spray head (31) which can extend into the volute (1) and the output end of which is arranged towards the impeller (2).
9. The cleaning structure of claim 8, wherein: the cleaning assembly (3) further comprises a water supply structure (32), a cleaning solution supply structure (33) and a power structure (34), the water supply structure (32) and the cleaning solution supply structure (33) are connected with the spray head (31) through a three-way valve (38), and the power structure (32) is arranged on a connecting pipeline of the three-way valve (38) and the spray head (31) and provides power for conveying water/cleaning solution.
10. The cleaning structure of claim 9, wherein: the cleaning assembly (3) further comprises a self-excited vibration sound generator (35) capable of homogenizing the concentration of the fluid in the conduit, the self-excited vibration sound generator (35) being provided on the conduit downstream of the power structure (34) and arranged adjacent to the power structure (34).
11. The cleaning structure of claim 9, wherein: the cleaning assembly (3) further comprises a first valve (36) and a second valve (37), the first valve (36) is arranged on a pipeline between the water supply structure (32) and the three-way valve (38) and used for controlling the supply of water, and the second valve (37) is arranged on a pipeline between the washing liquid supply structure (33) and the three-way valve (38) and used for controlling the supply of washing liquid.
12. The cleaning structure of any one of claims 8 to 11, wherein: shower nozzle (31) are including feed liquor section (311) and diffuser (312), the output of feed liquor section (311) is connected with the input of diffuser (312), the internal diameter of diffuser (312) is crescent from input to output, the junction of feed liquor section (311) output and diffuser (312) input is provided with a baffle (313), and open at the middle part of this baffle (313) has impact mouth (314) that supply liquid to pass through and improve the liquid flow rate, thereby the output department of diffuser (312) is provided with filter screen (315) that can strike and make smuggleing the bubble secretly in the output liquid to the output liquid.
13. The cleaning structure of claim 12, wherein: the inner diameter of the front section of the impact port (314) is consistent front and back, and the inner diameter of the rear section of the impact port (314) is gradually enlarged along the liquid output direction.
14. The cleaning structure of claim 12, wherein: the output end of the diffusion section (312) is provided with a contraction section (316) which extends along the axial direction of the diffusion section (312) and has gradually reduced inner diameter.
15. The cleaning structure of claim 14, wherein: the included angle between the peripheral wall of the contraction section (316) and the filter screen (315) is 40-50 degrees, and the length of the contraction section (316) in the axial direction is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631814.3A CN110617515A (en) | 2018-06-19 | 2018-06-19 | Cleaning method and cleaning structure of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631814.3A CN110617515A (en) | 2018-06-19 | 2018-06-19 | Cleaning method and cleaning structure of range hood |
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| Publication Number | Publication Date |
|---|---|
| CN110617515A true CN110617515A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810631814.3A Pending CN110617515A (en) | 2018-06-19 | 2018-06-19 | Cleaning method and cleaning structure of range hood |
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| CN (1) | CN110617515A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351093A (en) * | 2020-04-28 | 2020-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, cleaning method and device thereof, and storage medium |
| CN114110693A (en) * | 2021-12-01 | 2022-03-01 | 广东万家乐燃气具有限公司 | Range hood cleaning system and automatic cleaning method |
| CN114353151A (en) * | 2022-02-18 | 2022-04-15 | 广东万家乐燃气具有限公司 | Range hood cleaning control method and range hood |
-
2018
- 2018-06-19 CN CN201810631814.3A patent/CN110617515A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351093A (en) * | 2020-04-28 | 2020-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, cleaning method and device thereof, and storage medium |
| CN114110693A (en) * | 2021-12-01 | 2022-03-01 | 广东万家乐燃气具有限公司 | Range hood cleaning system and automatic cleaning method |
| CN114110693B (en) * | 2021-12-01 | 2023-11-21 | 广东万家乐燃气具有限公司 | Range hood cleaning system and automatic cleaning method |
| CN114353151A (en) * | 2022-02-18 | 2022-04-15 | 广东万家乐燃气具有限公司 | Range hood cleaning control method and range hood |
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