CN114542524B

CN114542524B - Cleaning mechanism, fan cleaning device and range hood

Info

Publication number: CN114542524B
Application number: CN202111282421.4A
Authority: CN
Inventors: 王发银; 张岩; 韩国强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2023-04-14
Anticipated expiration: 2041-11-01
Also published as: CN114542524A

Abstract

The invention discloses a cleaning mechanism, a fan cleaning device and a range hood, wherein the cleaning mechanism comprises a cleaning medium supply pipe and a nozzle arranged on the cleaning medium supply pipe, the nozzle comprises a nozzle body, a jet flow channel communicated with the cleaning medium supply pipe in a fluid mode is formed in the nozzle body, the jet flow channel penetrates through one end, far away from the cleaning medium supply pipe, of the nozzle body so that an outlet is formed in the penetrating position, the nozzle further comprises a flexible linear component, and when the nozzle is in a working state, at least part of the linear component is located outside the outlet and swings under the pushing of a cleaning medium. Compared with the prior art, the invention has the advantages that: the linear member is driven by the cleaning medium to swing, so that dirt, especially the dirt such as grease softened by the cleaning medium, can be peeled off from the cleaning object, thereby improving the cleaning effect.

Description

Cleaning mechanism, fan cleaning device and range hood

Technical Field

The invention relates to a cleaning device, in particular to a cleaning mechanism, a fan cleaning device applying the cleaning mechanism and a range hood applying the fan cleaning device.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

With the continuous progress of the self-cleaning technology of the range hood, steam cleaning or water cleaning is widely applied to the field of self-cleaning of the range hood, the basic principle is that a steam generator generates steam, the steam or the water is conveyed to a nozzle at the tail end of a spray pipe, the steam is quickly sprayed out from the nozzle to wash an impeller for cleaning, and the impeller rotates to throw oil by centrifugal force to finish self-cleaning.

According to the self-cleaning technology, no force acts on softened grease after steam is softened, and oil is not removed enough by simply using centrifugal force to spin oil, so that the softened grease is hardened again, and the self-cleaning effect is not achieved.

There is also technology of combining steam cleaning with a brush, for example, a steam cleaning brush disclosed in chinese patent application No. 201720441103.0, which includes a cleaning brush body and a connecting member connected to the cleaning brush body, the cleaning brush body is a hollow housing structure, a partition plate is provided in the housing structure, the partition plate divides the hollow portion into a steam injection portion and a cleaning portion, a plurality of bristles are provided in the cleaning portion, a steam injection inlet is provided on the connecting member, and the steam injection inlet is communicated to the steam injection portion to inject steam into the steam injection portion.

However, because the position of the impeller of the range hood, which needs to be cleaned, is the pressure surface of the blade, the pressure surface is located in the middle area of the two blades, the position is long and narrow, and the curve from the inlet to the outlet is narrowed, the traditional brush cleaning cannot clean the area, even if the cleaning mode is adjusted, the problem that the brush cannot be cleaned automatically after being polluted exists, and the brush is polluted by the oil smoke when being placed in the oil smoke, and becomes a pollution source of the impeller instead.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a cleaning mechanism, which can apply an acting force to the dirt by swinging, so as to be easily peeled off from the cleaning object, and can realize self-cleaning by using the cleaning medium.

The second technical problem to be solved by the invention is to provide a fan cleaning device applying the cleaning mechanism.

The third technical problem to be solved by the invention is to provide a range hood with the fan cleaning device.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a cleaning mechanism comprising a cleaning medium supply pipe and a nozzle provided on the cleaning medium supply pipe, the nozzle comprising a nozzle body in which a spray flow passage is formed in fluid communication with the cleaning medium supply pipe, the spray flow passage extending through an end of the nozzle body remote from the cleaning medium supply pipe so as to constitute an outlet at the location of the penetration, characterized in that: the nozzle also comprises a flexible linear component, and when the nozzle is in a working state, at least part of the linear component is positioned outside the outlet and swings under the pushing of the cleaning medium to act on the dirt on the cleaning object.

Preferably, the linear member is a non-metallic wire of metal wire, polytetrafluoroethylene, or glass fiber. The metal wire has the advantages that the metal wire is good in heat conductivity, grease adhered to the metal wire can be timely separated under the action of heat after the metal wire collides and scrapes the blade, and the polytetrafluoroethylene wire has the property of being not stained with oil, so that self-cleaning can be achieved.

Preferably, the diameter of the linear member is in the range of 0.3 to 0.4mm in order to ensure that the cleaning medium pushes the linear member to oscillate.

To protect the linear member, the linear member is retracted within the jet flow path of the nozzle body and maintains this tendency when the nozzle is in a non-operating state.

Preferably, the nozzle further comprises an elastic member connected between an inner side wall of the cleaning medium supply pipe and an end of the linear member, thereby maintaining the tendency of the linear member to retract within the nozzle body.

To facilitate the cleaning medium pushing the linear member out of the jet channel, the linear member extends in the same direction as the jet channel.

Preferably, in order to increase the spraying pressure and speed of the cleaning medium, the spraying flow passage is conical, and the size of the spraying flow passage is gradually reduced from the position close to the cleaning medium supply pipe to the direction far away from the cleaning medium supply pipe.

The technical solution adopted by the present invention to solve the second technical problem is as follows: a fan belt cleaning device, includes fan system (1), its characterized in that: a cleaning mechanism as described above is applied.

Preferably, the fan system comprises a volute and an impeller arranged in the volute, the impeller comprises at least two blades, and the cleaning mechanism is used for cleaning the blades of the impeller.

To facilitate cleaning of heavily soiled areas of the blade, the blade has a pressure side and a suction side, the outlet being directed towards the pressure side of the blade.

The technical scheme adopted by the invention for solving the third technical problem is as follows: a range hood, its characterized in that: the fan cleaning device as described above is applied.

Compared with the prior art, the invention has the advantages that: the linear component is driven by the cleaning medium to swing, so that dirt, especially the dirt such as grease softened by the cleaning medium can be peeled off from the cleaning object, the cleaning effect is improved, the linear component is particularly suitable for cleaning in a narrow space, and self-cleaning can be completed by the cleaning medium; the linear component is set to extend out in the working state and retract in the non-working state, so that the linear component can be protected.

Drawings

FIG. 1 is a schematic view of a fan cleaning apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view (non-operational) of a fan cleaning apparatus according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion I of FIG. 2;

fig. 4 is a schematic view (non-operating state) of a cleaning mechanism of the fan cleaning apparatus according to the embodiment of the present invention;

fig. 5 is a sectional view (non-operating state) of a cleaning mechanism of the fan cleaning apparatus according to the embodiment of the present invention;

FIG. 6 is an enlarged view of portion II of FIG. 5;

FIG. 7 is a schematic view of the elastic member and the linear member of the cleaning mechanism of the fan cleaning apparatus according to the embodiment of the present invention;

fig. 8 is a sectional view (working state) of the fan cleaning apparatus according to the embodiment of the present invention;

FIG. 9 is an enlarged view of a portion III of FIG. 8;

fig. 10 is a schematic view (operating state) of a cleaning mechanism of the fan cleaning apparatus according to the embodiment of the present invention;

fig. 11 is a sectional view (working state) of a cleaning mechanism of the fan cleaning apparatus according to the embodiment of the present invention;

fig. 12 is an enlarged view of a part iv of fig. 11.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and simplicity in description, but do not indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are illustrative only and are not to be construed as limiting since the disclosed embodiments of the invention can be positioned in different orientations, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 7, a fan cleaning device includes a fan system 1 and a cleaning mechanism 2, where the fan system 1 is a centrifugal fan and is applied to a range hood in this embodiment, alternatively, the fan system 1 may also be applied to any other occasions requiring such a power device.

The fan system 1 includes a volute 11 and an impeller 12 disposed in the volute 11, the volute 11 includes two cover plates 111 arranged at intervals and a circumferential wall 112 located between the two cover plates 111, and the cover plate 111 is provided with an air inlet 113, which may be a single air inlet or a double air inlet. The impeller 12 includes at least two circumferentially spaced blades 121, each blade 121 having a pressure surface 1211 and a suction surface 1212. The structure of the fan system 1 is the same as that of the prior art, and is not described herein again.

The cleaning mechanism 2 may be used to clean any location within the fan system 1, and in this embodiment is particularly suitable for cleaning the pressure surface 1211 of the blade 121. The cleaning mechanism 2 comprises a cleaning medium supply pipe 21 and a nozzle 22 arranged on the cleaning medium supply pipe 21, such as the end part, wherein one end of the cleaning medium supply pipe 21 far away from the nozzle 22 is used for being communicated with an external cleaning medium source, and the cleaning medium is high-temperature steam. The nozzle 22 comprises a hollow nozzle body 221, and the nozzle body 221 may be angled, e.g. perpendicular, to the cleaning medium supply conduit 21. A spray flow path 222 is formed in the nozzle body 221, and the spray flow path 222 penetrates through one end of the nozzle body 221, which is far from the cleaning medium supply pipe 21, thereby forming an outlet 223 at the penetration. The injection flow path 222 (nozzle body 221) is formed in a conical shape whose dimension gradually decreases from the position close to the cleaning medium supply pipe 21 toward the direction away from the cleaning medium supply pipe 21, and thereby the cleaning medium is gradually pressurized and accelerated and then injected. The jet flow path 222 is in fluid communication with the cleaning medium supply pipe 21. The outlet 223 of the nozzle body 221 faces the pressure surface 1211 of the vane 121.

The nozzle 22 further includes a linear member 224 and an elastic member 225, one or at least two linear members 224 may be provided in the injection flow path 222 of the nozzle body 221, one end of each linear member 224 may extend partially into the cleaning medium supply pipe 21 or only in the injection flow path 222 into the cleaning medium supply pipe 21, the other end of each linear member 224 is close to the outlet 223 of the nozzle body 221, and the linear member 224 extends in the same direction as the injection flow path 222. The elastic member 225 is connected between the inner side wall of the cleaning medium supply pipe 21 and the end of the linear member 224, thereby causing the linear member 224 to maintain a tendency to retract within the nozzle body 221. The elastic member 225 is preferably a spring.

The linear member 224 is a flexible member and may be a metal wire such as copper wire, or a non-metallic wire of polytetrafluoroethylene or fiberglass. The metal wire has the advantages that the metal wire is good in heat conductivity, grease adhered to the metal wire after the metal wire collides and scrapes the blades 121 can be timely separated under the action of heat, and the polytetrafluoroethylene wire has the property of being not stained with oil, so that self-cleaning can be achieved. The diameter of the outlet 223 is usually 1mm, and if it is a single metal wire or polytetrafluoroethylene wire, the diameter range is 0.2-0.4 mm. Because the steam pressure at the outlet 223 reaches at least 0.3MPa, the speed reaches 3-4 m/s, even the metal wire or non-metal wire with the diameter of 0.3-0.4 mm can swing due to the uneven steam speed, and the scraping of the grease can be realized by the collision with the blade 121. It is known from the whip popping phenomenon that the object is shaken at a high tip speed, so that the tip can effectively pump out the oil stain when the wire member 224 is shaken.

Referring to fig. 8 to 12, when the steam is sprayed, at least a portion of the linear member 224 is pushed out of the nozzle body 221 by the steam, and contacts the pressure surface 1211 of the blade 121 of the impeller 12 along with the steam, and the elastic member 225 is stretched. Since the linear member 224 is unstable in the steam, it may swing up and down, left and right, thereby achieving a wide range of "whipping" of the pressure surface 1211 of the blade 1211, which facilitates the removal of the oil stain softened by the steam.

When the cleaning is finished, the linear component 224 retracts into the nozzle body 221 under the action of the elastic piece 225, so that the linear component 224 is protected; even if oil stains are adhered to the linear component 224 in the beating process, the linear component can be quickly cleaned under the action of steam, and long-term use is guaranteed.

The nozzle 22 can be used in conjunction with a moving cleaning medium supply pipe 21, and in combination with the reversal of the impeller 12 during cleaning, a wide range of cleaning can be achieved.

In the above embodiment, the linear member 224 is retracted by the elastic member 225, and alternatively, the linear member 224 itself may be processed into a spring shape, and the elongation and contraction may be achieved by the elasticity of itself. In addition, the linear member 225 may be extended and retracted by a mechanical structure such as a link mechanism, a screw mechanism, or a gear mechanism.

In the above embodiment, the cleaning mechanism 2 is mainly used for cleaning the fan system 1, alternatively, the cleaning mechanism 2 may also be used for cleaning other cleaning objects which are too soft and have stains that cannot be peeled off, such as other parts of the range hood, surfaces of other objects in a long-term oil smoke environment, and the like.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims

1. A fan cleaning device comprises a fan system (1) and a cleaning mechanism for cleaning the fan system (1), wherein the cleaning mechanism comprises a cleaning medium supply pipe (21) and a nozzle (22) arranged on the cleaning medium supply pipe (21), the nozzle (22) comprises a nozzle body (221), a spray flow channel (222) communicated with the cleaning medium supply pipe (21) is formed in the nozzle body (221), the spray flow channel (222) penetrates through one end, far away from the cleaning medium supply pipe (21), of the nozzle body (221) so as to form an outlet (223) at the penetrating position, and the fan cleaning device is characterized in that: the nozzle (22) further comprises a flexible linear component (224), when the nozzle (22) is in an operating state, at least part of the linear component (224) is positioned outside the outlet (223) and swings under the pushing of the cleaning medium to act on the grease softened by the cleaning medium on the cleaning object;

when the nozzle (22) is in a non-working state, the linear component (224) is retracted in the injection flow channel (222) of the nozzle body (221), the nozzle (22) further comprises an elastic piece (225), and the elastic piece (225) is connected between the inner side wall of the cleaning medium supply pipe (21) and the end part of the linear component (224), so that the linear component (224) keeps the tendency of retracting in the nozzle body (221).

2. The fan cleaning apparatus according to claim 1, wherein: the linear member (224) is a non-metallic wire of metal wire, polytetrafluoroethylene, or glass fiber.

3. The fan cleaning apparatus according to claim 2, wherein: the diameter range of the linear component (224) is 0.3-0.4 mm.

4. The fan cleaning device of any one of claims 1~3, wherein: the linear member (224) extends in the same direction as the injection flow path (222).

5. A fan cleaning device according to any one of claims 1~3 wherein: the injection flow channel (222) is in a conical shape, and the size of the injection flow channel is gradually reduced from the position close to the cleaning medium supply pipe (21) to the direction far away from the cleaning medium supply pipe (21).

6. The fan cleaning apparatus according to claim 1, wherein: the fan system (1) comprises a volute (11) and an impeller (12) arranged in the volute (11), the impeller (12) comprises at least two blades (121), and the cleaning object is the blade (121).

7. The fan cleaning apparatus according to claim 6, wherein: the blade (121) has a pressure surface (1211) and a suction surface (1212), the outlet (223) being directed towards the pressure surface of the blade (121).

8. A range hood, its characterized in that: use of a fan cleaning apparatus according to any one of claims 1~7.