Cleaning device and cleaning method for range hood

Abstract

The invention discloses a cleaning device and method for a range hood, and the cleaning device comprises a water cup which is arranged at the lower end of a range hood body, and the interior of the water cup is divided into a clean water cavity, a cleaning agent cavity and a sewage cavity which are arranged at intervals; the water pump is arranged on the range hood body, and the water inlet end of the water pump is communicated with the water purification cavity; a suction nozzle piece communicated with the water outlet end of the water pump is arranged at one end of the jet device, a jet outlet is formed in the other end of the jet device, and an injection opening communicated with the cleaning agent cavity is formed in the position between the suction nozzle piece and the jet outlet; the bubbler is arranged at the jet flow outlet; and the cleaning nozzle is arranged on the volute, and the cleaning nozzle communicates with the jet flow outlet so as to clean the volute and / or the fan. The cleaning module is simple in structure, the cleaning cleanliness of the range hood can be effectively improved, and meanwhile the size of the cleaning module can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a cleaning device and a cleaning method of an extractor hood. BACKGROUND

[0002] After being used for a period of time, the inner surface of the wind wheel and the volute of the extractor hood will adsorb a lot of oil stains. If not cleaned for a long time, a large amount of oil stains will accumulate, affecting the performance of the extractor hood. Since the oil stains are flammable, serious cases may even cause a fire.

[0003] The traditional cleaning method is generally to have professional extractor hood maintenance personnel clean at home. The extractor hood needs to be disassembled, and each part needs to be cleaned separately. This cleaning method is time-consuming and laborious, and the cleaning cost is very high. In recent years, various extractor hoods with automatic cleaning functions have appeared on the market, including extractor hoods with hot water direct washing, hot steam direct softening, and heating wire heating melting. These technologies have some defects:

[0004] 1. The hot water or steam cleaning assembly is large in size and occupies space, causing congestion at the top of the box, which is not conducive to the expansion of other functions. Moreover, water stains are easy to accumulate inside, causing pipe blockage and affecting cleaning function. The power is generally large, the energy consumption is high, and there is a certain safety hazard.

[0005] 2. The heating wire oil melting cleaning method generally fixes the heating wire on the outside of the volute surrounding plate, which can only heat and melt the oil stains on the surface of the volute. The cleaning area is extremely limited. SUMMARY

[0006] The present application aims to at least solve one of the problems existing in the prior art to some extent. For this purpose, the present application provides a cleaning device for an extractor hood, which has a simple structure and can effectively improve the cleaning cleanliness of the extractor hood, while effectively reducing the size of the cleaning module.

[0007] In addition, the present application also provides a cleaning method for an extractor hood, which is simple and feasible, and can effectively improve the cleaning effect and user experience.

[0008] The first object is achieved by the following technical solutions:

[0009] A cleaning device for an extractor hood, the extractor hood comprising a hood body, a volute is arranged in the hood body, and a fan is arranged in the volute. The automatic cleaning device comprises:

[0010] A water cup is arranged at the lower end position of the hood body, and three interval arranged clean water cavities, cleaning agent cavities and sewage cavities are divided in the water cup;

[0011] A water pump is arranged on the smoke machine body, and a water inlet end of the water pump is communicated with the clean water cavity;

[0012] A suction nozzle is arranged at one end of the ejector and communicated with the water outlet end of the water pump, and a jet outlet is arranged at the other end of the ejector, and a suction port communicated with the cleaning agent cavity is arranged at a position between the suction nozzle and the jet outlet;

[0013] A bubbler is arranged at the position of the jet outlet;

[0014] A cleaning nozzle is arranged on the volute and communicated with the jet outlet to clean the volute and / or the fan.

[0015] In some embodiments, the suction nozzle has a suction nozzle channel, and a suction nozzle inlet and a suction nozzle outlet are arranged at two ends of the suction nozzle channel respectively, the suction nozzle inlet is communicated with the water outlet end of the water pump, and the suction nozzle outlet extends after penetrating through the outer side wall of the ejector.

[0016] In some embodiments, a water suction section, a variable diameter section, a connecting section and a pressure expansion section are arranged in the suction nozzle channel in sequence from the suction nozzle inlet to the suction nozzle outlet, the pipe diameter of the water suction section is smaller than that of the connecting section, the pipe diameter of the variable diameter section gradually increases in the water outlet direction, the pipe diameter of the pressure expansion section gradually decreases in the water outlet direction, and the pipe diameter of the suction nozzle inlet is larger than that of the suction nozzle outlet.

[0017] In some embodiments, in the vertical direction, the edge line of the suction nozzle outlet is arranged in a flush manner with the central axis of the suction port.

[0018] In some embodiments, a jet cavity is defined in the ejector, and a water inlet section, a guide section, a throat section, a mounting section and a water outlet section are arranged in the jet cavity in sequence from the suction nozzle to the jet outlet, the suction nozzle at least partially extends into the water inlet section, the pipe diameter of the guide section gradually decreases in the water outlet direction, the pipe diameter of the throat section is smaller than that of the water inlet section, the bubbler is arranged in the mounting section, the pipe diameter of the mounting section is larger than that of the water inlet section, a diffusion section is arranged at a position between the mounting section and the throat section, the pipe diameter of the diffusion section gradually increases in the water outlet direction, and the pipe diameter of the water outlet section is smaller than that of the throat section.

[0019] In some embodiments, the upper and lower end walls of the cross section of the guide section are arranged in an inclined manner along the water outlet direction and towards the central axis of the guide section, and the inclination angle is 13° to 15°.

[0020] In some embodiments, the volume of the cleaning agent cavity is smaller than that of the clean water cavity.

[0021] In some embodiments, the bubbler is made of a porous medium material.

[0022] In some embodiments, a sealing ring is further included, which is arranged at a position between the nozzle piece and the jetifier.

[0023] The second object is achieved by the following technical solutions:

[0024] A cleaning method of an extractor hood, characterized by being applied to the cleaning device according to any one of the above embodiments, and comprising the following steps:

[0025] Starting the extractor hood to make the extractor hood enter a cleaning mode;

[0026] Starting the water pump to pump clean water in the clean water cavity;

[0027] Under the action of low pressure, the cleaning agent in the cleaning agent cavity is sucked into the jetifier, and the cleaning agent and the clean water are mixed together to generate washing water;

[0028] The washing water generates foam when flowing through the bubbler;

[0029] The foam is subjected to foam cleaning to the volute and the fan through the jet outlet;

[0030] Until the cleaning agent in the cleaning agent cavity is exhausted;

[0031] Under the action of low pressure, external air is sucked into the jetifier through the cleaning agent cavity, and the air and the clean water are mixed together to generate gas mixed water;

[0032] The gas mixed water generates bubble water when flowing through the bubbler;

[0033] The bubble water is subjected to bubble water cleaning to the volute and the fan through the jet outlet.

[0034] Compared with the prior art, the present application at least includes the following beneficial effects:

[0035] 1、The cleaning device of the extractor hood has simple structure, can effectively improve the cleaning cleanliness of the extractor hood, and can effectively reduce the volume of the cleaning module.

[0036] 2、The cleaning method of the extractor hood is simple and feasible, and can effectively improve the cleaning effect and the use experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0038] Figure 1 is a structural schematic diagram of the cleaning device in the first embodiment of the present application;

[0039] Figure 2 is a structural schematic diagram of part of the cleaning device in the first embodiment of the present application;

[0040] Figure 3 is a sectional view of part of the cleaning device in the first embodiment of the present application;

[0041] Figure 4 is an exploded schematic diagram of part of the cleaning device in the first embodiment of the present application;

[0042] Figure 5 is a structural schematic diagram of the water cup in the first embodiment of the present application;

[0043] Figure 6 is a flow chart of the automatic cleaning method in the second embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the technical solutions claimed by the present application.

[0046] Embodiment I:

[0047] As shown in Figures 1 to 5 , the present embodiment provides a cleaning device of a range hood, the range hood comprising a range hood body 1, a volute 11 arranged in the range hood body 1, and a fan 12 arranged in the volute 11, the automatic cleaning device comprising:

[0048] The water cup 2 is arranged at the lower end of the smoke machine body 1, and three water purifying cavities 21, cleaning agent cavities 22 and sewage cavities 23 are arranged in the water cup 2;

[0049] The water pump 3 is arranged on the smoke machine body 1, and the water inlet end of the water pump 3 is communicated with the water purifying cavity 21;

[0050] The jet device 4 is arranged with a suction nozzle 5 communicated with the water outlet end of the water pump 3 at one end, and a jet outlet 41 at the other end, and a suction port 42 communicated with the cleaning agent cavity 22 is arranged between the suction nozzle 5 and the jet outlet 41;

[0051] The bubbler 6 is arranged at the position of the jet outlet 41;

[0052] The cleaning nozzle 7 is arranged on the volute 11, and the cleaning nozzle 7 is communicated with the jet outlet 41 to clean the volute 11 and / or the fan 12.

[0053] In the embodiment, the water cup 2 is arranged at the lower end of the smoke machine body 1, and three water purifying cavities 21, cleaning agent cavities 22 and sewage cavities 23 are arranged in the water cup 2, so that clean water is stored in the water purifying cavities 21, cleaning agent is stored in the cleaning agent cavities 22, and the sewage after cleaning is collected in the sewage cavities 23. The water inlet end of the water pump 3 is communicated with the water purifying cavity 21, and the water outlet end is communicated with the jet device 4 through the suction nozzle 5 to deliver the clean water in the water purifying cavity 21 to the jet device 4 through the suction nozzle 5, so that low pressure is formed in the cavity of the jet device 4. Under the action of the low pressure, the cleaning agent in the cleaning agent cavity 22 is synchronously sucked into the jet device 4 through the suction port 42, and then the cleaning agent and the clean water are mixed and enter the bubbler 6 at the rear end of the jet device 4, so that the cleaning agent and the water form fine foam through the action of the bubbler 6, and finally the foam is sprayed to the inner wall of the fan 12 and / or the volute 11 through the cleaning nozzle 7, so that the oil stains are decomposed by the reaction of the cleaning agent to achieve the cleaning purpose. Then, after the cleaning agent is consumed, the clean water in the water purifying cavity 21 is continuously sprayed to the inner wall of the fan 12 and / or the volute 11, and at the same time, since the cleaning agent in the cleaning agent cavity 22 has been consumed, the external air enters the jet device 4 through the cleaning agent cavity 22 and the suction port 42 in sequence to mix the air with the clean water, and then the air and the clean water produce bubble water through the action of the bubbler 6, and then the bubble water is sprayed to the inner wall of the fan 12 and / or the volute 11. The impact force is generated by the explosion of the bubbles on the contact surface of the smoke machine. When the bubbles burst, a large amount of energy is released, and the water flow together with the bubbles washes the oil stains powerfully to improve the cleaning effect. Then, the sewage after cleaning is collected in the sewage cavity 23 to complete the cleaning work of the smoke machine, and the structure is simple, which can effectively improve the cleaning degree of the smoke machine and reduce the size of the cleaning module.

[0054] Furthermore, the suction nozzle 5 has a suction nozzle channel 51, with a suction nozzle inlet 52 and a suction nozzle outlet 53 respectively at both ends of the suction nozzle channel 51. The suction nozzle inlet 52 is connected to the water outlet of the water pump 3, and the suction nozzle outlet 53 extends through the outer wall of the ejector 4.

[0055] Preferably, within the suction channel 51, a suction section 511, a reducing section 512, a connecting section 513, and a diffuser section 514 are sequentially arranged from the suction inlet 52 to the suction outlet 53. The diameter of the suction section 511 is smaller than that of the connecting section 513, the diameter of the reducing section 512 gradually increases along the water outlet direction, the diameter of the diffuser section 514 gradually decreases along the water outlet direction, and the diameter of the suction inlet 52 is larger than that of the suction outlet 53.

[0056] Preferably, the diameter of the suction section 511 is 4mm to 6mm, the diameter of the suction nozzle outlet 53 is 2mm to 3mm, and the diameter of the ejector port 42 is 4mm to 6mm.

[0057] Specifically, in the vertical direction, the edge line of the suction nozzle outlet 53 is aligned with the central axis of the ejector port 42.

[0058] In this embodiment, since the ejector 4 is open at the end away from the ejector outlet 41, a suction channel 51 is defined in the suction nozzle 5. A suction inlet 52 and a suction outlet 53 are respectively provided at both ends of the suction channel 51. The suction inlet 52 is connected to the water outlet of the water pump 3, and the suction outlet 53 extends after passing through the open end of the ejector 4. In this way, at least a part of the suction nozzle 5 can be inserted into the ejector 4, thereby detachably setting the suction nozzle 5 on the open end of the ejector 4. More preferably, the suction nozzle 5 and the open end of the ejector 4 are connected by a thread (not shown in the figure), and a sealing ring 8 can be added at the middle position of the two to prevent water from overflowing from the interface between the two. Furthermore, within the suction channel 51, from the suction inlet 52 to the suction outlet 53, there are sequentially arranged a water suction section 511, a reducing section 512, a connecting section 513, and a diffuser section 514. The water suction section 511 is connected to the water outlet of the water pump 3 through the suction inlet 52, and its diffuser section 514 is connected to the internal space of the ejector 4. Moreover, the pipe diameter of the water suction section 511 is smaller than the pipe diameter of the connecting section 513. In this way, the clean water in the clean water chamber 21 can be pumped to the suction inlet 52 by the water pump 3, so that the clean water passes through the suction inlet 52, the water suction section 511, the reducing section 512, the connecting section 513, the diffuser section 514, and the suction outlet 53 in sequence and is ejected at high speed into the ejector 4, thereby facilitating the formation of low pressure within the ejector 4.

[0059] Preferably, a jet chamber 43 is defined within the jet ejector 4. Within the jet chamber 43, an inlet section 431, a guide section 432, a throat section 433, an installation section 434, and an outlet section 435 are sequentially arranged from the nozzle 5 toward the jet outlet 41. The nozzle 5 extends at least partially into the inlet section 431. The diameter of the guide section 432 gradually decreases along the outlet direction. The diameter of the throat section 433 is smaller than the diameter of the inlet section 431. The aerator 6 is disposed within the installation section 434, and the diameter of the installation section 434 is larger than the diameter of the inlet section 431. A diffuser section 436 is disposed between the installation section 434 and the throat section 433. The diameter of the diffuser section 436 gradually increases along the outlet direction, and the diameter of the outlet section 435 is smaller than the diameter of the throat section 433.

[0060] Furthermore, the diameter of the inlet section 431 is 9mm to 11mm, and the distance between the guide section 432 and the outlet end of the suction nozzle 5 is 7mm to 9mm.

[0061] Specifically, the upper and lower end walls of the cross-section of the guide section 432 are inclined along the water outlet direction and toward the central axis of the guide section 432, and the inclination angle is 13° to 15°.

[0062] Preferably, the volume of the detergent chamber 22 is smaller than the volume of the water purification chamber 21.

[0063] In this embodiment, since a jet cavity 43 with one side open is defined within the jet injector 4, the suction nozzle 5 is installed on the open end of the jet cavity 43 so that the suction nozzle outlet 53 communicates with the inside of the jet cavity 43. Within the jet cavity 43, from the suction nozzle 5 towards the jet outlet 41, a water inlet section 431, a guide section 432, a throat section 433, an installation section 434, and a water outlet section 435 are sequentially arranged. The water inlet section 431 has an open end at the end furthest from the guide section 432. The suction nozzle 5 extends at least partially into the water inlet section 431 so that the suction nozzle 5 is installed at the open end of the water inlet section 431, thereby setting the suction nozzle outlet 53 of the suction nozzle 5 within the water inlet section 431. Simultaneously, within the water inlet section 431... An ejector port 42 is provided at the lower end of the ejector 4 so that the ejector port 42 is located between the nozzle 5 and the jet outlet 41, so that the nozzle 5 extends into the ejector 4 after passing through the open end of the ejector 4. In this way, the edge line of the nozzle outlet 53 is aligned with the central axis of the ejector port 42. The diameter of the guide section 432 gradually decreases along the water outlet direction at the end away from the water inlet section 431. The aerator 6 is located in the installation section 434, and a diffuser section 436 is provided along the water outlet direction between the installation section 434 and the throat section 433. The diffuser section 436 facilitates the rapid diffusion of the water flow from the throat section 433 onto the aerator 6, thereby improving the bubble effect of the aerator 6.

[0064] More preferably, in order to achieve a better jet suction effect, the pipe diameter of the suction inlet 52 and the water suction section 511 of the suction nozzle 5 is preferably 4mm to 6mm, the pipe diameter of the suction outlet 53 of the suction nozzle 5 is preferably 2mm to 3mm, the pipe diameter of the ejector port 42 of the ejector 4 is preferably 4mm to 6mm, and the pipe diameter of the water inlet section 431 of the ejector 4 is preferably 9mm to 11mm. When the suction nozzle 5 and the ejector 4 are assembled together, the distance between the suction outlet 53 of the suction nozzle 5 and the guide section 432 at the end near the throat section 433 is preferably 7mm to 9mm. Since the pipe diameter of the guide section 432 gradually decreases along the water outlet direction at the end away from the water inlet section 431, the upper and lower end walls of the cross-section of the guide section 432 are inclined along the water outlet direction and toward the central axis of the guide section 432. That is, the guide section 432 is inclined to the central axis of the ejector 4, and its inclination angle is preferably 13° to 15°.

[0065] Furthermore, the bubbler 6 is made of a porous medium material, and its reasonable design can effectively improve the foaming effect of the bubbler 6.

[0066] Specifically, it also includes a sealing ring 8, which is located between the nozzle 5 and the jet injector 4.

[0067] Specifically, it also includes a first suction pipe and a second suction pipe, wherein the first suction pipe connects the water pump 3 inlet to the water purification chamber 21, and the second suction pipe connects the detergent chamber 22 to the injection port 42.

[0068] In this embodiment, the inner cavity of the water cup 2 is divided into three independently spaced cavities along the horizontal direction: a sewage cavity 23, a cleaning agent cavity 22, and a clean water cavity 21. Two suction tubes are designed in the cleaning agent cavity 22 and the clean water cavity 21, respectively. The first suction tube connects the water inlet of the water pump 3 to the clean water cavity 21, and the second suction tube connects the cleaning agent cavity 22 to the ejector port 42. In addition, the volume of the cleaning agent cavity 22 is smaller than that of the sewage cavity 23 and the clean water cavity 21, and the volume of the sewage cavity 23 is the same as that of the clean water cavity 21. By controlling the size of the clean water cavity 21 and the cleaning agent cavity 22, the entire cleaning process of the range hood can be divided into two stages: foam cleaning and bubble water cleaning.

[0069] More preferably, a through hole is provided in the enclosure of the volute 11, and the cleaning nozzle 7 is installed at the through hole so that the cleaning nozzle 7 cleans the volute 11 and / or the fan 12. At the same time, the water pump 3 and the jet injector 4 are fixed to the top plate of the range hood. In this way, the volume of the range hood cleaning module can be reduced, thereby avoiding the problem of insufficient installation space on the top plate of the range hood.

[0070] Example 2:

[0071] like Figure 6As shown, this embodiment provides a cleaning method for a range hood, applied to any cleaning device described in Embodiment 1. The water cup 2 is divided into three spaced chambers: a clean water chamber 21, a cleaning agent chamber 22, and a wastewater chamber 23. The inlet of the water pump 3 is connected to the clean water chamber 21, and the outlet of the water pump 3 is connected to the ejector 4 via a suction nozzle 5. This allows clean water from the clean water chamber 21 to be transported to the ejector 4 through the suction nozzle 5. This creates a low pressure within the ejector 4. Simultaneously, under this low pressure, the cleaning agent in the cleaning agent chamber 22 is drawn into the ejector 4 through the injection port 42, mixing with the clean water to produce washing water. This washing water then enters the aerator 6 at the rear end of the ejector 4 to form fine foam. Finally, it is sprayed through the cleaning nozzle 7 onto the inner wall of the fan 12 and / or the volute 11, thereby decomposing the grease through the reaction of the cleaning agent. To achieve the purpose of cleaning, after the cleaning agent is consumed, the clean water in the clean water chamber 21 continues to be pumped into the ejector 4. At the same time, since the cleaning agent in the cleaning agent chamber 22 has been consumed, external air enters the ejector 4 through the cleaning agent chamber 22 and the ejector port 42 in sequence. The air and clean water mix together to produce gas-water mixture. The gas-water mixture is aerated by the aerator 6 to produce bubble water. The bubble water is then sprayed onto the inner wall of the fan 12 and / or the volute 11. The bursting of the bubbles on the contact surface of the range hood generates an impact force. When these bubbles burst, they release a huge amount of energy, which, together with the water flow, powerfully washes away the grease, thereby improving the cleaning effect. Then, the wastewater after cleaning is collected in the wastewater chamber 23 to complete the cleaning of the range hood. The method is simple and feasible, and can effectively improve the cleaning effect and the user experience.

[0072] The cleaning method in this embodiment includes the following steps:

[0073] Step S101: Turn on the range hood to put it into cleaning mode.

[0074] Step S102: Start water pump 3 to pump clean water into the clean water chamber 21.

[0075] In step S103, under low pressure, the detergent in the detergent chamber 22 is drawn into the jet injector 4, and the detergent is mixed with clean water to produce washing water.

[0076] In this embodiment, the water pump 3 pumps the clean water in the clean water chamber 21 to the cleaning nozzle 7. After the clean water enters the ejector 4 through the suction nozzle 5, a low pressure is generated in the ejector 4. Under the action of the low pressure, the detergent in the detergent chamber 22 is sucked into the ejector 4, and the detergent and clean water are mixed together to produce washing water.

[0077] In step S104, the washing water generates foam as it flows through the aerator 6.

[0078] In step S105, foam is sprayed through jet outlet 41 to the volute 11 and blower 12 for foam cleaning.

[0079] In this embodiment, since the aerator 6 is made of porous media material, the washing water will generate fine foam when it flows through the aerator 6. Finally, it will be sprayed onto the inner wall of the blower 12 and the volute 11 through the cleaning nozzle 7. The oil stains will be decomposed by the reaction of the detergent, thereby achieving the purpose of foam cleaning.

[0080] Step S106, until the cleaning agent in the cleaning agent chamber 22 is exhausted.

[0081] In step S107, under low pressure, external air is drawn into the jet injector 4 through the cleaning agent chamber 22, and the air and water are mixed together to produce a gas-water mixture.

[0082] In this embodiment, since the volume of the water purification chamber 21 is larger than that of the detergent chamber 22, when the detergent in the detergent chamber 22 has been completely consumed, but the water in the water purification chamber 21 has not yet been exhausted, the water in the water purification chamber 21 will continue to be pumped to the cleaning nozzle 7. The water enters the ejector 4 through the suction nozzle 5 to generate low pressure in the ejector 4. Since there is no detergent in the detergent chamber 22, under the action of low pressure, the external air enters the ejector 4 through the detergent chamber 22 and the ejector port 42 in sequence. In this way, a large amount of air can be drawn in through the ejector port 42, so that the air and water are mixed together to produce gas-water mixture.

[0083] In step S108, the gas-water mixture generates bubble water as it flows through the bubbler 6.

[0084] In step S109, the bubble water is sprayed through the jet outlet 41 to the volute 11 and the blower 12 for bubble water cleaning.

[0085] In this embodiment, the gas-water mixture generates a large number of microbubbles through the aerator 6, i.e., bubble water is generated by the aerator 6. The bubble water is then sprayed through the jet outlet 41 to the volute 11 and the fan 12 for bubble water cleaning. In this way, gas is injected into the liquid stream to form bubble water. The impact force generated by the bursting of the bubbles on the contact surface is utilized. When these bubbles burst, they release a huge amount of energy, which, together with the water flow, powerfully washes away the oil stains, thereby improving the cleanliness. By controlling the volume of the water purification chamber 21 and the detergent chamber 22, the entire cleaning process of the range hood can be divided into two stages: foam cleaning and bubble water cleaning, thereby effectively improving the cleaning effect and the user experience.

[0086] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A cleaning device for a range hood, the range hood comprising a range hood body (1), a volute (11) disposed within the range hood body (1), and a fan (12) disposed within the volute (11), characterized in that, The cleaning device includes: A water cup (2) is located at the lower end of the main body (1) of the range hood. The water cup (2) is divided into three spaced-apart clean water chambers (21), detergent chambers (22) and wastewater chambers (23). A water pump (3) is installed on the main body (1) of the smoke machine, and the water inlet of the water pump (3) is connected to the water purification chamber (21); The jet ejector (4) has a suction nozzle (5) at one end that is connected to the water outlet of the water pump (3) and a jet outlet (41) at the other end. An ejector port (42) connected to the detergent chamber (22) is provided between the suction nozzle (5) and the jet outlet (41). A bubbler (6) is provided at the jet outlet (41); A cleaning nozzle (7) is disposed on the volute (11) and the cleaning nozzle (7) is connected to the jet outlet (41) to clean the volute (11) and / or the blower (12).

2. The cleaning device for a range hood according to claim 1, characterized in that, The suction nozzle (5) has a suction nozzle channel (51), and a suction nozzle inlet (52) and a suction nozzle outlet (53) are respectively provided at both ends of the suction nozzle channel (51). The suction nozzle inlet (52) is connected to the water outlet of the water pump (3), and the suction nozzle outlet (53) extends through the outer side wall of the jet injector (4).

3. The cleaning device for a range hood according to claim 2, characterized in that, Within the suction channel (51), from the suction inlet (52) to the suction outlet (53), there are sequentially arranged a water suction section (511), a variable diameter section (512), a connecting section (513), and a diffuser section (514). The diameter of the water suction section (511) is smaller than that of the connecting section (513). The diameter of the variable diameter section (512) gradually increases along the water outlet direction, and the diameter of the diffuser section (514) gradually decreases along the water outlet direction. Furthermore, the diameter of the suction inlet (52) is larger than that of the suction outlet (53).

4. A cleaning device for a range hood according to claim 2, characterized in that, In the vertical direction, the edge line of the suction nozzle outlet (53) is aligned with the central axis of the ejector port (42).

5. A cleaning device for a range hood according to claim 1, characterized in that, A jet chamber (43) is defined within the jet ejector (4). Within the jet chamber (43), from the nozzle (5) towards the jet outlet (41), a water inlet section (431), a guide section (432), a throat section (433), an installation section (434), and a water outlet section (435) are arranged sequentially. The nozzle (5) extends at least partially into the water inlet section (431). The diameter of the guide section (432) gradually decreases along the water outlet direction. The throat section (433)... The diameter of the pipe is smaller than that of the inlet section (431). The aerator (6) is installed in the installation section (434). The diameter of the installation section (434) is larger than that of the inlet section (431). A diffuser section (436) is provided between the installation section (434) and the throat section (433). The diameter of the diffuser section (436) gradually increases along the water outlet direction. The diameter of the outlet section (435) is smaller than that of the throat section (433).

6. A cleaning device for a range hood according to claim 5, characterized in that, The upper and lower end walls of the cross section of the guide section (432) are inclined along the water outlet direction and toward the central axis of the guide section (432), and the inclination angle is 13° to 15°.

7. A cleaning device for a range hood according to claim 1, characterized in that, The volume of the cleaning agent chamber (22) is smaller than the volume of the water purification chamber (21).

8. A cleaning device for a range hood according to claim 1, characterized in that, The bubbler (6) is made of a porous medium material.

9. A cleaning device for a range hood according to claim 1, characterized in that, It also includes a sealing ring (8), which is disposed between the nozzle (5) and the jet injector (4).

10. A method for cleaning a range hood, characterized in that, Applied to the cleaning apparatus as described in any one of claims 1 to 11, the cleaning method comprises the following steps: Turn on the range hood to put it into cleaning mode; Start the water pump to pump clean water into the water purification chamber; Under low pressure, the detergent in the detergent chamber is drawn into the jet injector, and the detergent is mixed with the clean water to produce washing water; The washing water produces foam as it flows through the aerator; The foam is directed through the jet outlet to the volute and the blower for foam cleaning. Until the cleaning agent in the cleaning agent chamber is exhausted; Under low pressure, outside air is drawn into the ejector after passing through the cleaning agent chamber, and the air mixes with the water to produce a gas-water mixture. The gas-water mixture produces bubbly water as it flows through the bubbler; The bubble water is directed through the jet outlet to the volute and the blower for bubble water cleaning.

Images