Impeller spraying cleaning device and self-cleaning range hood

Abstract

The utility model provides a kind of impeller spray cleaning device and self-cleaning range hood, it is related to kitchen appliance technical field, the utility model provides the impeller spray cleaning device including liquid supply mechanism and spray pipe group, spray pipe group includes the inner spray pipe of being arranged in the one side of impeller and the outer spray pipe of being arranged in the other side of impeller, inner spray pipe and outer spray pipe are all communicated with liquid supply mechanism.The utility model provides the impeller spray cleaning device can realize the bilateral cleaning of impeller, effectively removes the oil dirt of the inside and outside of impeller, so that impeller rotates more stably, guarantee the overall performance of range hood, prolong the service life of range hood, improve the use effect of range hood.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an impeller spray cleaning device and a self-cleaning range hood. Background Technology

[0002] As an indispensable appliance in modern kitchens, range hoods primarily function to draw in and exhaust cooking fumes generated during cooking by creating negative pressure through the high-speed rotation of an impeller, thus maintaining fresh air in the kitchen. Over time, grease tends to accumulate on the inner and outer surfaces of the impeller, affecting the range hood's airflow and efficiency.

[0003] Currently, the self-cleaning technology of range hoods can only clean one side of the impeller, and it is difficult to effectively remove the oil stains on the other side of the impeller. As the oil stains continue to accumulate, the dynamic balance of the impeller is disrupted, which leads to a sharp decline in the overall performance of the range hood, affecting its service life and performance. Utility Model Content

[0004] The purpose of this invention is to provide an impeller spray cleaning device that can clean both sides of the impeller, effectively removing oil stains from both the inner and outer sides of the impeller, ensuring the overall performance of the range hood, and improving the range hood's usability. Additionally, a self-cleaning range hood incorporating the aforementioned impeller spray cleaning device is also provided.

[0005] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, the present invention provides an impeller spray cleaning device, including a liquid supply mechanism and a spray pipe assembly. The spray pipe assembly includes an inner spray pipe disposed on one side of the impeller and an outer spray pipe disposed on the other side of the impeller. Both the inner spray pipe and the outer spray pipe are connected to the liquid supply mechanism.

[0006] In an optional embodiment, the inner spray pipe and the outer spray pipe are respectively arranged on the same axial section of the impeller.

[0007] In an optional embodiment, the spray pipe assembly further includes a liquid supply pipe and a diverting pipe; the outer spray pipe is connected to the liquid supply mechanism through the liquid supply pipe, and the inner spray pipe is connected to the outer spray pipe through the diverting pipe; or, the inner spray pipe is connected to the liquid supply mechanism, and the outer spray pipe is connected to the inner spray pipe through the diverting pipe.

[0008] In an optional embodiment, the outer spray pipe, the diverting pipe, and the inner spray pipe are connected in sequence in a "U" shape.

[0009] In an optional embodiment, the inner spray pipe is provided with a plurality of first nozzles along its own axial direction, and along the flow direction of the medium in the inner spray pipe, the nozzle diameter of the first nozzle located downstream is larger than the nozzle diameter of the first nozzle located upstream. And / or, the external spray pipe is provided with a plurality of second nozzles along its own axial direction, and along the flow direction of the medium in the external spray pipe, the nozzle diameter of the second nozzle located downstream is larger than the nozzle diameter of the second nozzle located upstream.

[0010] In an optional embodiment, the liquid supply mechanism includes a first liquid supply component, a second liquid supply component, and a cleaning medium processing component. The first liquid supply component and the second liquid supply component are both connected to the inlet of the cleaning medium processing component, and the outlet of the cleaning medium processing component is connected to the spray pipe assembly.

[0011] In an optional embodiment, both the first liquid supply assembly and the second liquid supply assembly include a first housing, a second housing, and an inlet pipe. The second housing is located below the first housing and is detachably connected to the first housing. The second housing has a vent hole, and the inlet pipe connects the second housing and the cleaning medium processing assembly.

[0012] In an optional embodiment, the first box in the first liquid supply assembly and the first box in the second liquid supply assembly are respectively used to hold different cleaning media, and the outer walls of both first boxes are provided with visible portions.

[0013] Secondly, this utility model provides a self-cleaning range hood, including an impeller, a top plate, and an impeller spray cleaning device as described in any of the foregoing embodiments, wherein the outer spray pipe is located on the outside of the impeller, and the inner spray pipe is located on the inside of the impeller. The liquid supply mechanism includes a first box for storing cleaning medium and a second box communicating with the first box. The first box is located on the outside of the top plate, and the second box is located on the inside of the top plate.

[0014] In an optional embodiment, the self-cleaning range hood further includes a volute housing covering the outside of the impeller, the volute housing having a recessed groove facing the impeller, the groove having an opening, the external spray pipe extending into the groove, and a second nozzle on the external spray pipe penetrating through the opening.

[0015] In an optional embodiment, the orientation of the opening has an angle with the direction of oil splashing at the opening of the opening.

[0016] The impeller spray cleaning device and self-cleaning range hood provided by this utility model can produce the following beneficial effects: Compared with the prior art, the impeller spray cleaning device provided by the first aspect of this utility model can achieve double-sided cleaning of the impeller, effectively remove oil stains from both the inner and outer sides of the impeller, make the impeller rotate more smoothly, ensure the overall performance of the range hood, extend the service life of the range hood, and improve the performance of the range hood.

[0017] In the self-cleaning range hood provided by the second aspect of this utility model, the first box can be set on the outside of the top plate, which makes it convenient for users to add cleaning medium into the first box and observe the remaining amount of cleaning medium, making it easy for users to use. It also has the advantages of good oil stain cleaning effect on the inner and outer sides of the impeller and more stable overall performance. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of the impeller spray cleaning device provided in an embodiment of this utility model from a first-view perspective; Figure 2 A three-dimensional structural schematic diagram of the impeller spray cleaning device provided in an embodiment of this utility model from a second perspective; Figure 3 A three-dimensional structural diagram of a self-cleaning range hood provided in an embodiment of this utility model from a first-view perspective; Figure 4 A three-dimensional structural diagram of a self-cleaning range hood component provided in an embodiment of this utility model from a first-view perspective. Figure 5 A three-dimensional structural diagram of a self-cleaning range hood component provided in an embodiment of this utility model, viewed from a second perspective. Figure 6 for Figure 5 A magnified view of part A; Figure 7 A three-dimensional structural diagram of the self-cleaning range hood provided in the embodiment of this utility model from a second perspective.

[0020] Icons: 1-Liquid supply mechanism; 11-First liquid supply component; 111-First housing; 112-Second housing; 113-Liquid inlet pipe; 12-Second liquid supply component; 13-Cleaning media treatment component; 2-Spray pipe assembly; 21-Inner spray pipe; 211-First nozzle; 22-Outer spray pipe; 221-Second nozzle; 23-Liquid supply pipe; 24-Diverting pipe; 3-Impeller; 4-Top plate; 5-Vortex; 51-Groove; 6-Fume concentration module; 7-Fume hood. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] The first aspect of this utility model provides an impeller spray cleaning device, such as... Figure 1 and Figure 2As shown, it includes a liquid supply mechanism 1 and a spray pipe assembly 2. The spray pipe assembly 2 includes an inner spray pipe 21 disposed on one side of the impeller 3 and an outer spray pipe 22 disposed on the other side of the impeller. Both the inner spray pipe 21 and the outer spray pipe 22 are connected to the liquid supply mechanism 1.

[0026] During use, the liquid supply mechanism 1 can provide cleaning medium to the spray pipe assembly 2. The outer spray pipe 22 in the spray pipe assembly 2 can spray cleaning medium onto the impeller 3 from one side of the impeller 3, and the inner spray pipe 21 in the spray pipe assembly 2 can spray cleaning medium onto the impeller 3 from the other side of the impeller 3, thereby realizing double-sided cleaning of the impeller 3, effectively removing oil stains from both the inner and outer sides of the impeller 3, making the impeller 3 rotate more smoothly, ensuring the overall performance of the range hood, extending the service life of the range hood, and improving the use effect of the range hood.

[0027] The following section will use the example of the inner spray pipe 21 being located inside the impeller 3 and the outer spray pipe 22 being located outside the impeller 3 for a detailed explanation.

[0028] In alternative implementations, such as Figure 6 As shown, the inner spray pipe 21 and the outer spray pipe 22 are respectively arranged on the same axial section of the impeller 3.

[0029] The above configuration allows the inner spray pipe 21 and the outer spray pipe 22 to simultaneously spray and clean the inner and outer surfaces of the impeller 3 within the same axial section during impeller 3 rotation. That is, the parts of each blade in impeller 3 that are positioned opposite each other can be cleaned at the same time. The outward thrust of the cleaning fluid sprayed from the inner spray pipe 21 on the blade can basically balance the inward thrust of the cleaning fluid sprayed from the outer spray pipe 22 on the blade. This avoids blade vibration, bending, or fatigue damage caused by using a single-sided spraying method or a staggered spraying method on the axial section. It ensures that the impact force of the cleaning fluid will not cause impact damage to the blade, helps maintain the dynamic balance of impeller 3, reduces vibration and noise, and improves the operational stability of the equipment.

[0030] Of course, the inner spray pipe 21 and the outer spray pipe 22 are not limited to being set on the same axial section of the impeller 3, and they can also be set on different axial sections of the impeller 3.

[0031] Specifically, the cleaning medium in the liquid supply mechanism 1 can enter the inner spray pipe 21 and the outer spray pipe 22 through two independent pipes, or through a main pipe. In other words, there is no restriction on whether the inner spray pipe 21 and the outer spray pipe 22 are directly or indirectly connected to the liquid supply mechanism 1.

[0032] In alternative implementations, such as Figure 1 and Figure 2As shown, the spray pipe assembly 2 also includes a liquid supply pipe 23 and a diverting pipe 24; the outer spray pipe 22 is connected to the liquid supply mechanism 1 through the liquid supply pipe 23, and the inner spray pipe 21 is connected to the outer spray pipe 22 through the diverting pipe 24; or, the inner spray pipe 21 is connected to the liquid supply mechanism 1, and the outer spray pipe 22 is connected to the inner spray pipe 21 through the diverting pipe 24.

[0033] Since the outer spray pipe 22 is more convenient to connect to the liquid supply mechanism 1 outside the impeller 3 through the liquid supply pipe 23, in order to simplify the pipeline structure, preferably, the outer spray pipe 22 is connected to the liquid supply mechanism 1 through the liquid supply pipe 23, and the inner spray pipe 21 is connected to the outer spray pipe 22 through the diverting pipe 24.

[0034] During use, the cleaning medium in the liquid supply mechanism 1 preferentially enters the liquid supply pipe 23 and then enters the outer spray pipe 22 through the liquid supply pipe 23. At the same time, the cleaning medium in the liquid supply pipe 23 enters the inner spray pipe 21 through the outer spray pipe 22 and the diverting pipe 24, thereby realizing the transfer of the cleaning medium to the outer spray pipe 22 and the inner spray pipe 21.

[0035] In the above embodiment, by setting up a liquid supply pipe 23 to transfer the cleaning medium in the liquid supply mechanism 1 to the end where spraying is achieved, compared with the outer spray pipe 22 and the inner spray pipe 21 being independently connected to the liquid supply mechanism 1, the pipeline design of the spray pipe group 2 can be more compact and occupy less space.

[0036] In alternative implementations, such as Figure 1 As shown, the outer spray pipe 22, the diverting pipe 24, and the inner spray pipe 21 are connected in sequence in a "U" shape.

[0037] The above embodiment allows the outer spray pipe 22 to extend to the outside of the impeller 3 while the inner spray pipe 21 extends to the inside of the impeller 3. The deflecting pipe 24 can be located outside the impeller 3, serving to connect the outer spray pipe 22 and the inner spray pipe 21.

[0038] Specifically, the outer spray pipe 22 extends in a straight line, and the inner spray pipe 21 also extends in a straight line; the turning pipe 24 is bent into an "L" shape, one end of the turning pipe 24 is connected to the outer spray pipe 22, and the extension direction of this end is parallel to the outer spray pipe 22; the other end of the turning pipe 24 is connected to the inner spray pipe 21, and the extension direction of this end is perpendicular to the inner spray pipe 21.

[0039] In alternative implementations, such as Figure 1 As shown, the inner spray pipe 21 is provided with a plurality of first nozzles 211 along its own axial direction, and each first nozzle 211 can spray the cleaning medium toward the inner side of the impeller 3.

[0040] Specifically, the distribution area of ​​the multiple first nozzles 211 can be aligned with and cover the axial range of the inner side of the blades in the impeller 3, so that the cleaning medium sprayed by the first nozzles 211 can cover the entire axial range of the blades.

[0041] The first nozzle 211 can be configured to be two, three, four, five, six, seven, or more.

[0042] Preferably, the first nozzle 211 can be configured to have six to nine nozzles.

[0043] In an optional embodiment, along the flow direction of the medium inside the inner spray pipe 21, the nozzle diameter of the downstream first nozzle 211 is larger than the nozzle diameter of the upstream first nozzle 211.

[0044] When the cleaning medium first enters the inner spray pipe 21, its velocity and pressure are relatively high. A smaller nozzle can better control the spray intensity in the initial stage, avoiding energy waste or excessive local impact caused by excessive spraying. As the medium flows forward in the inner spray pipe 21, the pressure gradually decreases and the velocity slows down. At this time, using a larger nozzle can increase the flow rate while maintaining a certain spray momentum, realizing the distribution of water volume in the inner spray pipe 21 from near to far, optimizing the energy distribution during the spraying process, and ensuring that the water volume and pressure of each first nozzle 211 are as balanced as possible.

[0045] In alternative implementations, such as Figure 1 As shown, the external spray pipe 22 is provided with a plurality of second nozzles 221 along its own axial direction, and each second nozzle 221 can spray the cleaning medium toward the outside of the impeller 3.

[0046] Specifically, the distribution area of ​​multiple second nozzles 221 can be aligned with and cover the axial range of the outer side of the blades in the impeller 3, so that the cleaning medium sprayed by the second nozzles 221 can cover the entire axial range of the blades.

[0047] The second nozzle 221 can be configured to be two, three, four, five, six, seven, or more.

[0048] Preferably, the second nozzle 221 can be configured to have six to nine nozzles.

[0049] In an optional embodiment, similarly, along the flow direction of the medium inside the outer spray pipe 22, the nozzle diameter of the downstream second nozzle 221 is larger than that of the upstream second nozzle 221. This arrangement ensures that the water volume and pressure of each second nozzle 221 are as comparable as possible.

[0050] Additionally, one end of the external spray pipe 22 is a closed end, and the other end is connected to the diverting pipe 24. The external spray pipe 22 may include two sections: a first section located between the closed end and the liquid supply pipe 23, and a second section located between the liquid supply pipe 23 and the diverting pipe 24. The second nozzles 221 in the external spray pipe 22 may be distributed in the first section.

[0051] The advantage of the above configuration is that when the liquid supply pipe 23 enters the cleaning medium in the outer spray pipe 22, one stream can enter the first section and be sprayed out through each of the second nozzles 221, and the other stream can directly enter the inner spray pipe 21 through the diverting pipe 24. The cleaning medium will not pass through the second nozzles 221 in the path of entering the inner spray pipe 21, ensuring that there is a sufficiently large water pressure at each of the first nozzles 211 on the inner spray pipe 21.

[0052] In alternative implementations, such as Figure 1 As shown, the liquid supply mechanism 1 includes a first liquid supply component 11, a second liquid supply component 12, and a cleaning medium processing component 13. The first liquid supply component 11 and the second liquid supply component 12 are both connected to the inlet of the cleaning medium processing component 13, and the outlet of the cleaning medium processing component 13 is connected to the spray pipe assembly 2.

[0053] In use, both the first liquid supply component 11 and the second liquid supply component 12 can supply cleaning medium to the cleaning medium processing component 13. After the cleaning medium is processed in the cleaning medium processing component 13, it is discharged to the liquid supply pipe 23. Alternatively, the cleaning medium processing component 13 may not process the cleaning medium and directly discharge the cleaning medium to the liquid supply pipe 23.

[0054] In an optional embodiment, both the first liquid supply assembly 11 and the second liquid supply assembly 12 include a first housing 111, a second housing 112 and an inlet pipe 113. The second housing 112 is located below the first housing 111 and is detachably connected to the first housing 111. The second housing 112 has a vent hole, and the inlet pipe 113 connects the second housing 112 and the cleaning medium processing assembly 13.

[0055] During use, the first housing 111 can be detached from the second housing 112, allowing the user to easily fill the first housing 111 with cleaning medium. After filling, the first housing 111 can be inserted into the interface of the second housing 112 for liquid injection. During use, the cleaning medium in the first housing 111 enters the second housing 112, and the gas in the second housing 112 can be discharged through the vent. The liquid inlet pipe 113 can guide the cleaning medium to the cleaning medium treatment component 13.

[0056] There are several ways to achieve a detachable connection between the first box 111 and the second box 112, such as snap-fitting the first box 111 and the second box 112, or threaded connection between the first box 111 and the second box 112.

[0057] In an optional embodiment, the first housing 111 in the first liquid supply assembly 11 and the first housing 111 in the second liquid supply assembly 12 are respectively used to hold different cleaning media, such as water or detergent.

[0058] In the above embodiments, the traditional method of cleaning the impeller 3 using a single cleaning medium is eliminated. By alternating and mixing two cleaning media to clean the impeller 3, the cleaning effect of the impeller 3 can be improved.

[0059] Specifically, the outer walls of both first boxes 111 are provided with visible parts.

[0060] The above method allows users to observe the remaining state of the cleaning medium in the first box 111 so that it can be replenished in a timely manner.

[0061] In a preferred embodiment, the outer wall of the first box 111 can be made of a transparent material, such as glass or transparent plastic.

[0062] In addition, the first box 111 can be a square box, a round box, etc., and the first box 111 can be set on the upper side of the top plate 4 in the range hood for easy disassembly and assembly. The second box 112 can be an irregularly shaped box, which can be set on the lower side of the top plate 4, located in the inner cavity of the smoke collection hood, and not sharing a cavity with the oil fumes.

[0063] In an optional embodiment, the cleaning medium processing assembly 13 may include a first pump body, a second pump body, and a steam generator; the first pump body is connected between the second housing 112 in the first liquid supply assembly 11 and the steam generator, and pressurizes the cleaning medium discharged from the second housing 112 before discharging it to the steam generator; the second pump body is connected between the second housing 112 in the second liquid supply assembly 12 and the steam generator, and pressurizes the cleaning medium discharged from the second housing 112 before discharging it to the steam generator.

[0064] The steam generator can heat water into hot water or steam. Therefore, one of the first liquid supply assembly 11 and the second liquid supply assembly 12 is used to supply water to the steam generator, while the other can supply cleaning liquid such as detergent to the steam generator.

[0065] The cleaning medium treatment assembly 13 may also include a housing that covers the outside of a pump body, a second pump body and a steam generator. The housing has a first inlet for the inlet pipe 113 of the first liquid supply assembly 11 to enter, a second inlet for the inlet pipe 113 of the second liquid supply assembly 12 to enter, and an outlet for the liquid supply pipe 23 to extend out.

[0066] A second aspect of this utility model provides a self-cleaning range hood, such as... Figures 3 to 6As shown, the self-cleaning range hood provided in the second aspect of this utility model includes an impeller 3, a top plate 4, and the aforementioned impeller spray cleaning device. The outer spray pipe 22 is located on the outer side of the impeller 3, and the inner spray pipe 21 is located on the inner side of the impeller 3. The first box 111 in the liquid supply mechanism 1 is located on the outer side of the top plate 4, and the second box 112 in the liquid supply mechanism 1 is located on the inner side of the top plate 4.

[0067] In the above embodiment, the first box 111 can be located on the outer side of the top plate 4, making it convenient for the user to add cleaning medium into the first box 111 and observe the remaining amount of cleaning medium, thus facilitating user operation. The second box 112 is located on the inner side of the top plate 4, allowing the second box 112 to be hidden inside the range hood and not exposed to the outside, ensuring the aesthetics of the range hood.

[0068] Meanwhile, since the above-mentioned self-cleaning range hood includes the impeller spray cleaning device provided in the first aspect of this utility model, it also has the advantages of good oil stain cleaning effect on the inner and outer sides of the impeller 3 and more stable overall performance.

[0069] In an optional embodiment, the top plate 4 has two openings to connect the first housing 111 on the upper side of the top plate 4 with the second housing 112 on the lower side of the top plate 4. The inner side of the top plate 4 has an elastic sleeve that fits into the two openings, preventing oil, dust and other impurities from entering the second housing 112 when the first housing 111 does not inject cleaning medium into the second housing 112.

[0070] The material of the aforementioned elastic sleeve can be rubber, soft plastic, etc.

[0071] In alternative implementations, such as Figure 6 As shown, the self-cleaning range hood also includes a volute 5 covering the outside of the impeller 3. The volute 5 has a recessed groove 51 facing the impeller 3. The groove 51 has an opening. The external spray pipe 22 extends into the groove 51 and the second nozzle 221 on the external spray pipe 22 passes through the opening.

[0072] During assembly, the outer spray pipe 22 can extend into the groove 51 from the outside of the volute 5, and the second nozzle 221 on the outer spray pipe 22 extends into the volute 5 through the opening and is aligned with the outside of the impeller 3.

[0073] The groove 51 provided above allows the outer spray pipe 22 to get closer to the impeller 3 along the radial direction of the impeller 3, resulting in a better cleaning effect on the outside of the impeller 3 when the spray pressure of the second nozzle 221 is constant.

[0074] In an optional embodiment, there is an angle between the orientation of the opening and the direction of oil splashing at the opening of the opening.

[0075] The purpose of the above settings is to prevent the oil spilled out by the impeller 3 from directly entering the opening through the opening of the hole when the impeller 3 is working, and to facilitate the separation of the second nozzle 221 from the volute 5 during disassembly.

[0076] Preferably, the opening is oriented perpendicular to the direction of oil splashing at its opening, which more effectively prevents oil from entering the opening.

[0077] Similarly, the orientation of the second nozzle 221 is at an angle to the direction of the oil splash at its own nozzle, so as to prevent the oil splashed out by the impeller 3 from directly entering the second nozzle 221, clogging the second nozzle 221, and extending the cleaning cycle of the second nozzle 221.

[0078] Preferably, the orientation of the second nozzle 221 is perpendicular to the splashing direction of the oil at its own nozzle, which more effectively prevents oil from entering the second nozzle 221.

[0079] In alternative implementations, such as Figure 7 As shown, the self-cleaning range hood described above may also include an oil fume concentration module 6. The oil fume concentration module 6 includes an oil fume concentration sensor, which is located inside the smoke collection hood 7 next to the right-side filter. The smoke inlet is on the surface of the smoke collection hood 7, following the user's habit of using the right-side stove. The oil fume concentration sensor is used to detect the oil fume concentration each time cooking, and to feed it back to the control system. This allows the control system to control the impeller spray cleaning device to clean the impeller 3 based on the oil fume concentration and other parameters.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An impeller spray cleaning device, comprising a liquid supply mechanism (1) and a spray pipe assembly (2), characterized in that, The spray pipe assembly (2) includes an inner spray pipe (21) disposed on one side of the impeller (3) and an outer spray pipe (22) disposed on the other side of the impeller (3). Both the inner spray pipe (21) and the outer spray pipe (22) are connected to the liquid supply mechanism (1).

2. The impeller spray cleaning device according to claim 1, characterized in that, The inner spray pipe (21) and the outer spray pipe (22) are respectively arranged on the same axial section of the impeller (3).

3. The impeller spray cleaning device according to claim 1, characterized in that, The spray pipe assembly (2) further includes a liquid supply pipe (23) and a diverting pipe (24); the outer spray pipe (22) is connected to the liquid supply mechanism (1) through the liquid supply pipe (23), and the inner spray pipe (21) is connected to the outer spray pipe (22) through the diverting pipe (24); or, the inner spray pipe (21) is connected to the liquid supply mechanism (1), and the outer spray pipe (22) is connected to the inner spray pipe (21) through the diverting pipe (24).

4. The impeller spray cleaning device according to claim 3, characterized in that, The outer spray pipe (22), the turning pipe (24), and the inner spray pipe (21) are connected in sequence in a "U" shape.

5. The impeller spray cleaning device according to claim 1, characterized in that, The inner spray pipe (21) is provided with a plurality of first nozzles (211) along its own axial direction. Along the flow direction of the medium in the inner spray pipe (21), the nozzle diameter of the first nozzle (211) located downstream is larger than the nozzle diameter of the first nozzle (211) located upstream. And / or, the external spray pipe (22) is provided with a plurality of second nozzles (221) along its own axial direction, and along the flow direction of the medium in the external spray pipe (22), the nozzle diameter of the second nozzle (221) located downstream is greater than the nozzle diameter of the second nozzle (221) located upstream.

6. The impeller spray cleaning device according to any one of claims 1-5, characterized in that, The liquid supply mechanism (1) includes a first liquid supply component (11), a second liquid supply component (12) and a cleaning medium processing component (13). The first liquid supply component (11) and the second liquid supply component (12) are both connected to the inlet of the cleaning medium processing component (13), and the outlet of the cleaning medium processing component (13) is connected to the spray pipe assembly (2).

7. The impeller spray cleaning device according to claim 6, characterized in that, The first liquid supply assembly (11) and the second liquid supply assembly (12) each include a first housing (111), a second housing (112) and an inlet pipe (113). The second housing (112) is located below the first housing (111) and is detachably connected to the first housing (111). The second housing (112) has a vent hole. The inlet pipe (113) is connected between the second housing (112) and the cleaning medium processing assembly (13).

8. The impeller spray cleaning device according to claim 7, characterized in that, The first box (111) in the first liquid supply assembly (11) and the first box (111) in the second liquid supply assembly (12) are respectively used to hold different cleaning media, and the outer walls of the two first boxes (111) are provided with visible parts.

9. A self-cleaning range hood, characterized in that, Includes an impeller (3), a top plate (4), and an impeller spray cleaning device as described in any one of claims 1-8, wherein the outer spray pipe (22) is located on the outside of the impeller (3), and the inner spray pipe (21) is located on the inside of the impeller (3); The liquid supply mechanism (1) includes a first box (111) for storing cleaning medium and a second box (112) communicating with the first box (111). The first box (111) is located outside the top plate (4), and the second box (112) is located inside the top plate (4).

10. The self-cleaning range hood according to claim 9, characterized in that, The self-cleaning range hood also includes a volute (5) covering the outside of the impeller (3). The volute (5) has a recess (51) facing the impeller (3). The recess (51) has an opening. The external spray pipe (22) extends into the recess (51) and the second nozzle (221) on the external spray pipe (22) passes through the opening.

11. The self-cleaning range hood according to claim 9, characterized in that, There is an angle between the orientation of the opening and the direction of oil splashing at the opening of the opening.

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