CN216619950U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood which comprises a range hood body, an oil screen, a fan and a cleaning assembly, wherein the oil screen is arranged in the range hood body, the fan comprises a volute and an impeller, the volute is provided with an air suction port, an air exhaust port and an air blowing port, the impeller is arranged at the position of the air suction port in the volute, the cleaning assembly comprises an air blowing component, the air blowing component is provided with a first end and a second end, the first end of the air blowing component is communicated with the air blowing port, and the second end of the air blowing component blows air towards at least one of the inner wall of the volute, the impeller and the oil screen to blow oil stains on the at least one. The range hood provided by the embodiment of the utility model can automatically clean the fan, and has the advantages of simple structure and good practicability.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of household appliances, in particular to a range hood.

Background

After the range hood in the current market is used, a large amount of oil dirt is accumulated on the surfaces of an oil screen, the inner wall of a volute and an impeller, the range hood is difficult to clean, the air quantity of the range hood is easy to reduce, the noise is increased, and the service life of the range hood is shortened.

Among the correlation technique, when the greasy dirt on the oil net of user's needs to the lampblack absorber and the fan cleans, need open quick-witted case, dismantle oil net and fan in order to wash it to the user's of not being convenient for use and later maintenance lead to user's use to experience and feel not good enough, and the practicality is relatively poor. In addition, the cleaning device of the range hood in the related art is complex in structure and unreasonable in structural layout, so that the use and production costs of the range hood are high, and the cleaning efficiency is low.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the range hood provided by the utility model can be used for conveniently cleaning oil stains in the range hood and is good in practicability.

According to the embodiment of the utility model, the range hood comprises: a cigarette machine body; the oil screen is arranged in the range hood body; the fan is arranged in the range hood body and comprises a volute and an impeller, the volute is provided with an air suction port, an air outlet and an air blowing port, the air blowing port is closer to the air outlet than the air suction port, the air suction port is approximately circular, and the impeller is arranged at the position of the air suction port in the volute; the cleaning assembly comprises a blowing component, the blowing component is provided with a first end and a second end, the first end of the blowing component is communicated with the blowing opening, and the second end of the blowing component blows air towards at least one of the inner wall of the volute, the impeller and the oil net to blow oil stains on the at least one.

According to the range hood provided by the embodiment of the utility model, the exhaust port and the blowing port are arranged on the volute, and when the fan is in a smoke exhaust mode, the exhaust port can be communicated with the exhaust port so as to exhaust the oil smoke in the fan. When the fan is in a cleaning mode, the air suction opening can be communicated with the air blowing opening, so that the range hood disclosed by the utility model can blow air towards at least one of the inner wall of the volute, the impeller and the oil net through the air blowing pipe connected with the air blowing opening to clean oil stains on at least one of the inner wall of the volute, the impeller and the oil net, and the range hood disclosed by the utility model shares the same fan as a power source in a smoke exhaust mode and a cleaning mode, and is compact in structure and small in size. In addition, compared with an exhaust opening, the blowing opening of the range hood is closer to the exhaust opening, so that the blowing effect of the blowing opening of the fan can be improved, the cleaning efficiency of the range hood is further improved, and the distance between the blowing opening and the exhaust opening is closer, so that the processing and manufacturing of the volute can be facilitated. The inlet scoop is circular roughly to the air current when can making the fan induced draft is more even, and then makes blowing and the effect of airing exhaust of fan better. Therefore, the range hood disclosed by the utility model has the advantages of high cleaning efficiency, good user experience, high practicability and the like.

Optionally, the second end of the blowing part blows towards the oil screen, the impeller and the inner wall part of the volute opposite to the outer peripheral surface of the impeller, so that the second end of the blowing part of the range hood blows towards the oil screen, the impeller and the inner wall part of the volute opposite to the outer peripheral surface of the impeller, the cleaning efficiency of oil stains on the range hood can be further improved, the operating efficiency of the range hood can be improved, the operating time of the range hood is shortened, and the user experience is further improved.

Optionally, the blowing component is arranged in the cigarette making machine body, the blowing port is arranged on the front wall surface of the volute and at least part of the blowing component is positioned in front of the fan. According to the range hood, at least part of the blowing part is arranged between the oil screen and the volute, so that the blowing part can fully utilize the gap between the fan and the oil screen, the arrangement of parts in the range hood is facilitated, the space utilization rate of the interior of the range hood is improved, and the range hood disclosed by the utility model is compact in structure and reasonable in layout.

Optionally, the blowing component includes an air supercharger and a blowpipe, the air supercharger communicates with the blowhole and is located in front of the fan, a first end of the blowpipe communicates with the air supercharger, and a second end of the blowpipe blows air toward at least one of the inner wall of the scroll casing, the impeller, and the oil mesh. The range hood provided by the utility model can improve the speed of the airflow sprayed by the blowing pipe by arranging the air supercharger, so that the impact force of the airflow on oil stains is increased, and the cleaning efficiency of the range hood is further improved.

Optionally, the blowing part further comprises a fan nozzle, the fan nozzle is communicated with the second end of the blowpipe and extends into the volute, and the fan nozzle is used for blowing air to at least one of the inner wall of the volute and the impeller.

Optionally, the blowing part further comprises a blowing box, the blowing box is connected with the spiral case, the blowing box is provided with an air inlet communicated with the blowing port and an air outlet connected with the air supercharger, and a filter screen is arranged at the air inlet.

Optionally, the blowing part further comprises an oil screen nozzle, the oil screen nozzle is communicated with the second end of the blowpipe, and the oil screen nozzle is provided with a jet orifice which is opposite to the oil screen and used for blowing towards the oil screen.

Optionally, the blower further includes a valve component, the valve component includes a flap, the flap is rotatably installed on the volute and has a first position and a second position, in the first position, the flap closes the air blowing opening and opens the air outlet, in the second position, the flap opens the air blowing opening and closes the air outlet. The range hood can selectively open and close the air outlet and the air blowing port by controlling the turning plate, so that the range hood can efficiently work in different modes, and the flexibility of the range hood in use is improved.

Optionally, the flap further has a third position in which the flap opens the air blowing opening and the air exhaust opening simultaneously. According to the range hood, the turnover plate is arranged at the third position, the air blowing port and the air exhaust port can be simultaneously communicated with the air suction port, so that part of oil smoke can be exhausted through the air exhaust port in the cleaning process, the cleaning efficiency of the range hood is improved, and the flexibility in time is high.

Optionally, the valve part further comprises a driving motor, and the driving motor is connected with the turning plate to drive the turning plate to rotate, so that the automation degree of the range hood can be improved, and the reliability is high.

Optionally, the spiral case includes spiral case body and changeover portion, the inlet scoop is located on the spiral case body, the air exit with the mouth of blowing is located on the changeover portion, the changeover portion with spiral case body detachably connects, can make spiral case body and changeover portion separately processing respectively, then splices it as an organic whole again to be convenient for the manufacturing of spiral case, and make the structural design of spiral case more reasonable, the practicality is strong.

Optionally, the range hood according to the present invention further includes a first heating member provided on at least one of the scroll casing and the impeller. According to the range hood, the first heating element is arranged on the volute or the impeller, so that oil stain on the volute or the impeller can be quickly dissolved, the air flow sprayed by the blowing pipe can more easily clean the oil stain on the volute or the impeller, and the efficiency of cleaning the oil stain by the range hood is improved.

Optionally, the first heating element is arranged on the peripheral wall of the volute, and the range hood provided by the utility model has the advantages that the first heating element is arranged on the peripheral wall of the volute, so that the first heating element can be conveniently mounted and dismounted, and the practicability is better.

Optionally, the range hood according to the embodiment of the present invention further includes a second heating member, and the second heating member is disposed on the oil net. According to the range hood disclosed by the utility model, the second heating element is arranged on the oil screen, so that the oil stain on the oil screen can be quickly dissolved, the oil stain on the oil screen can be more easily cleaned by the air flow sprayed by the oil screen nozzle, and the efficiency of cleaning the oil stain by the range hood is further improved.

Optionally, the cleaning assembly further comprises an atomizing component, the atomizing component comprises an atomizer and a liquid storage container connected with the atomizer, the atomizer is communicated with the blowing component, and the atomizer is used for atomizing the cleaning liquid in the liquid storage container and delivering the cleaning liquid into the blowing component so as to spray the atomized cleaning liquid onto the at least one cleaning component. The oil fume exhauster provided by the utility model has the advantages that the atomization component is arranged, and the cleaning liquid can be atomized and conveyed into the air blowing pipe, so that the speed of separating oil stains from the fan is further increased, and the cleaning effect of the oil fume exhauster is further improved.

Optionally, the atomizer and the liquid storage container are detachably connected, so that the atomizer and the liquid storage container which are failed can be replaced quickly, and the practicability is high.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention.

Fig. 2 is a partial schematic view of a range hood according to an embodiment of the present invention.

Fig. 3 is a schematic connection diagram of a cleaning assembly of a range hood according to an embodiment of the present invention.

Fig. 4 is a schematic view of a fan of a range hood according to an embodiment of the present invention.

Fig. 5 is a schematic connection diagram of an oil screen and an oil screen nozzle of the range hood according to the embodiment of the present invention.

Fig. 6 is a schematic view of the range hood according to the embodiment of the present invention during smoke evacuation.

Fig. 7 is a schematic diagram of the range hood according to the embodiment of the present invention during cleaning.

Reference numerals:

1. a cigarette machine body; 11. a panel;

2. an oil screen;

3. a fan; 31. an impeller; 32. a volute; 321. a volute body; 322. a transition section; 3221. an air outlet; 3222. an air blowing port; 3223. an air suction opening; 33. a valve member; 331. turning over a plate; 332. a drive motor;

4. a cleaning assembly; 41. a blowing part; 411. a blowpipe; 412. a fan nozzle; 413. an oil screen nozzle; 4131. an ejection port; 414. an air supercharger; 415. a blow box; 4151. a filter screen; 42. an atomizing member; 421. an atomizer; 422. a reservoir; 423. a connecting pipe;

5. a first heating member;

6. a second heating member.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

A range hood according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 7, the range hood according to the embodiment of the utility model comprises a range hood body 1, an oil net 2, a fan 3 and a cleaning assembly 4. The oil screen 2 is arranged in the cigarette machine body 1, the fan 3 comprises a volute 32 and an impeller 31, the volute 32 is provided with an air suction opening 3223, an air exhaust opening 3221 and an air blowing opening 3222, the air blowing opening 3222 is closer to the air exhaust opening 3221 than the air suction opening 3223, the air suction opening 3223 is generally circular, the impeller 31 is arranged at the position of the air suction opening 3223 in the volute 32, the cleaning component 4 comprises an air blowing component 41, the air blowing component 41 is provided with a first end and a second end, the first end of the air blowing component 41 is communicated with the air blowing opening 3222, and the second end of the air blowing component 41 blows towards at least one of the inner wall of the volute 32, the impeller 31 and the oil screen 2 to blow oil stains on the at least one.

According to the range hood of the embodiment of the utility model, the air exhaust port 3221 and the air blowing port 3222 are arranged on the volute 32, when the fan 3 is in a smoke exhaust mode, the air suction port 3223 can be communicated with the air exhaust port 3221 to exhaust oil smoke in the fan 3. When the fan 3 is in the cleaning mode, the air suction port 3223 is communicated with the air blowing port 3222, so that the range hood of the embodiment of the utility model blows air towards at least one of the inner wall of the volute 32, the impeller 31 and the oil net 2 through the air blowing part 41 connected with the air blowing port 3222 to clean oil stains on at least one of the inner wall of the volute 32, the impeller 31 and the oil net 2, and the smoke exhausting mode and the cleaning mode of the range hood of the embodiment of the utility model utilize the same fan 3 as a power source, and have a compact structure and a small volume.

In addition, the air blowing port 3222 of the range hood according to the embodiment of the present invention is closer to the air exhaust port 3221 than the air suction port 3223, so that the air blowing effect of the air blowing port 3222 of the fan 3 can be improved, the cleaning efficiency of the range hood is further improved, and the processing and manufacturing of the volute 32 can be facilitated due to the closer distance between the air blowing port 3222 and the air exhaust port 3221. Further, the air suction opening 3223 is substantially circular, in other words, the outer circumference of the cross section of the air suction opening 3223 is circular, so that the air flow of the fan 3 during air suction can be more uniform, and the blowing and exhausting effects of the fan 3 are better.

It is understood that, as shown in fig. 3 to 5, the second end of the blowing part 41 may only blow toward the impeller 31 to purge the oil stains on the impeller 31, may only blow toward the inner wall of the volute 32 to purge the oil stains on the inner wall of the volute 32, and may only blow toward the oil screen 2 to purge the oil stains on the oil screen 2. For another example, the second end of the blowing part 41 may simultaneously blow air toward the impeller 31, the inner wall of the volute 32 opposite to the outer circumference of the impeller 31, and the oil screen 2 to simultaneously remove oil stains on the inner wall of the volute 32, the impeller 31, and the oil screen 2.

Therefore, the range hood provided by the embodiment of the utility model has the advantages of high cleaning efficiency, good user experience, high practicability and the like.

In addition, when the fan 3 is started, oil stains on the impeller 31 are easily thrown onto the inner wall of the volute 32, and the second end of the blowing part 41 of the range hood according to the embodiment of the utility model simultaneously blows towards the oil screen 2, the impeller 31 and the inner wall part of the volute 32 opposite to the outer peripheral surface of the impeller 31, so that the cleaning efficiency of the oil stains can be further improved, the operating efficiency of the range hood can be improved, the operating time of the range hood is shortened, and the user experience is further improved.

For convenience of description, the up-down direction, the left-right direction, and the front-rear direction in fig. 1 are hereinafter referred to as the up-down direction, the left-right direction, and the front-rear direction of the range hood.

The range hood body 1 comprises a panel 11, the panel 11 is arranged in front of the range hood body 1, the oil screen 2 is installed on the inner side of the panel 11, and the rear surface of the range hood is fixed on the wall of a kitchen. For convenience of description, the impeller 31, the inner wall of the scroll 32, or the oil screen 2 will be collectively referred to as an area to be cleaned hereinafter. The range hood has a smoke evacuation mode and a cleaning mode. When the range hood is in a smoke exhaust mode, the air exhaust port 3223 is communicated with the air exhaust port 3221 to exhaust oil smoke in a kitchen. When the range hood is in a cleaning mode, the air suction port 3223 is communicated with the air blowing port 3222, and the range hood according to the embodiment of the utility model utilizes the air blowing part 41 to guide air flow of the air blowing port 3222 to an area to be cleaned, so that oil stains in the area to be cleaned are swept, user experience is good, and cleaning efficiency is high.

In some embodiments, as shown in figures 3 and 4, the blowing component 41 is disposed within the cigarette maker body 1, the blowing port 3222 is disposed on the front wall surface of the volute 32 and at least a portion of the blowing component 41 is located in front of the blower 3.

As shown in fig. 1 to 5, the front wall surface of the scroll casing 32 is a surface of the scroll casing 32 opposite to the oil screen 2, and the air blowing port 3222 is provided on the front wall surface of the scroll casing 32, that is, the air blowing port 3222 is provided toward the oil screen 2. The blowing part 41 is at least partially provided in front of the scroll case 32 means that a part of the blowing part 41 is provided in front of the scroll case 32 or the blowing part 41 is entirely provided in front of the scroll case 31. According to the range hood disclosed by the embodiment of the utility model, at least part of the blowing part 41 is arranged between the oil screen 2 and the volute 32, so that the blowing part 41 can fully utilize the gap between the fan 3 and the oil screen 2, the arrangement of parts in the range hood is facilitated, the internal space utilization rate of the range hood is improved, and the range hood disclosed by the embodiment of the utility model is compact in structure and reasonable in layout.

In some embodiments, as shown in fig. 3, the blowing part 41 includes an air supercharger 414 and a blowpipe 411, the air supercharger 414 communicates with the blowport 3222 and is located in front of the blower 3, a first end of the blowpipe 411 communicates with the air supercharger 414, and a second end of the blowpipe 411 blows air toward at least one of the inner wall of the scroll case 32, the impeller 31, and the oil mesh 2. For example, the air booster 414 may be an air booster pump or an air compressor. The range hood of the embodiment of the utility model can enable the flow velocity of the air flow sprayed by the blowing pipe 411 to be higher by arranging the air supercharger 414, thereby increasing the impact force on oil stains and further improving the oil stain cleaning efficiency of the range hood.

In some embodiments, as shown in fig. 3, the blowing part 41 further includes a blowing box 415, the blowing box 415 is connected to the spiral case 32, the blowing box 415 has an air inlet communicated with the blowing port 3222 and an air outlet connected to the air supercharger 414, and the air inlet is provided with a filter screen 4151 to filter the air flow guided from the fan 3 to the air supercharger 414, so as to improve the cleanliness of the scavenging air, and thus the range hood of the embodiment of the present invention has a better purging effect.

In some embodiments, as shown in fig. 3 and 4, the blowing part 41 further includes a blower nozzle 412, the blower nozzle 412 is communicated with the second end of the blowing pipe 411 and extends into the scroll casing 32, and the blower nozzle 412 is used for blowing air to at least one of the inner wall of the scroll casing 32 and the impeller 31. Optionally, there are a plurality of blowing pipes 411 and a plurality of fan nozzles 412, the plurality of fan nozzles 412 correspond to the plurality of blowing pipes 411 one by one, and the plurality of fan nozzles 412 are arranged at intervals along the circumferential direction of the air suction opening 3223. The range hood of the embodiment of the utility model can enlarge the range of the air flow sprayed by the blowing pipe 411 by arranging the fan nozzles 412, and improve the uniformity of the air flow sprayed by the blowing pipe 411, so that the range hood of the embodiment of the utility model has better cleaning effect.

Optionally, the fan nozzle 412 is a fan-shaped nozzle, and the fan nozzle 412 faces the inner wall of the volute 32, so that the range of the airflow sprayed by the fan nozzle 412 can be further expanded, the cleaning efficiency of the range hood according to the embodiment of the utility model is further improved, and the user experience is improved.

Further, the blowing part 41 further includes an oil mesh nozzle 413, the oil mesh nozzle 413 communicating with a second end of the blowing pipe 411, the oil mesh nozzle 413 having a jet port 4131 opposite to the oil mesh 2 to blow air toward the oil mesh 2. Alternatively, the oil screen nozzle 413 is detachably installed inside the panel 11. For example, the oil mesh nozzle 413 may be clamped on the panel 11, or the oil mesh nozzle 413 and the panel 11 are connected by bolts, so that the oil mesh nozzle 413 of the range hood according to the embodiment of the present invention is quickly installed, and the range hood is simple to operate and has strong practicability.

In order to make the technical solution of the present invention easier to understand, the technical solution of the present invention will be described below in a manner that the length direction of the oil mesh nozzle 413 coincides with the left-right direction, the width direction of the oil mesh nozzle 413 coincides with the up-down direction as shown in fig. 2, the front-back direction as shown in fig. 2 to 4, and the thickness direction of the oil mesh nozzle 413 coincides with the front-back direction as shown in fig. 2 and 5.

For example, as shown in fig. 2 and 5, the oil screen nozzle 413 is provided above the oil screen 2, the longitudinal direction of the oil screen nozzle 413 coincides with the longitudinal direction of the oil screen 2, and the length of the air flow ejected from the ejection port 4131 is longer than the length of the oil screen 2. When the oil stain on the oil screen 2 is purged, the injection port 4131 downwards injects the purge gas to enable the oil stain on the oil screen 2 to rapidly flow down the oil screen 2 under the impact force of the purge gas and the gravity action of the oil stain, so as to improve the decontamination efficiency of the oil screen 2.

In some embodiments, as shown in fig. 3, the blower 3 further includes a valve component 33, the valve component 33 includes a flap 331, the flap 331 is rotatably mounted on the scroll casing 32 and has a first position in which the flap 331 closes the air blowing port 3222 and opens the air discharging port 3221, and a second position in which the flap 331 opens the air blowing port 3222 and closes the air discharging port 3221. The valve part 33 serves to selectively open and close the air exhaust port 3221 and the air blowing port 3222. The range hood of the embodiment of the utility model can selectively open and close the air outlet 3221 and the air blowing port 3222 by controlling the turning plate 331, so that the range hood can efficiently work in different modes, and the flexibility of the range hood of the embodiment of the utility model in use is improved.

For example, as shown in fig. 6, in the smoke discharging mode, the flap 331 moves to the first position to open the air outlet 3221 and close the air blowing port 3222, so that the oil smoke sucked by the air suction port 3223 is discharged through the air outlet 3221, thereby preventing the oil smoke from entering the air blowing port 3222 to cause oil smoke backflow, and improving the reliability of smoke discharging of the range hood. As shown in fig. 7, in the cleaning mode, the flap 331 moves to the second position, the flap 331 opens the air blowing port 3222 and closes the air exhaust port 3221, so that the air flow sucked by the air exhaust port 3221 is completely exhausted from the air blowing port 3222, and the problem of insufficient purge air flow caused by the air flow exhausted from the air exhaust port 3221 is solved.

Optionally, as shown in fig. 4, the flap 331 further has a third position in which the flap 331 opens the air blowing port 3222 and the air discharging port 3221 simultaneously. According to the range hood provided by the embodiment of the utility model, the flap 331 is arranged at the third position, so that the air blowing port 3222 and the air exhaust port 3221 can be simultaneously communicated with the air suction port 3223, and further, a part of oil smoke can be exhausted through the air exhaust port 3221 in the cleaning process, the cleaning efficiency of the range hood is improved, and the flexibility in time is higher.

Further, as shown in fig. 4, the valve member 33 further includes a driving motor 332, and the driving motor 332 is connected to the flap 331 to drive the flap 331 to rotate. According to the range hood disclosed by the embodiment of the utility model, the turnover plate 331 is controlled by arranging the driving motor 332, so that the automation degree of the range hood can be improved, and the reliability is higher. Specifically, the driving motor 332 is located outside the volute 32, the turning plate 331 is located inside the volute 32, and the driving motor 332 controls the turning plate 331 to axially rotate through the connecting shaft, so that the range hood provided by the embodiment of the utility model can prolong the service life of the valve part 33, is convenient for subsequent maintenance and replacement, and has good practicability.

In some embodiments, as shown in fig. 4, the volute 32 includes a volute body 321 and a transition section 322, the air suction port 3223 is disposed on the volute body 321, the air exhaust port 3221 and the air blowing port 3222 are disposed on the transition section 322, and the transition section 322 is detachably connected to the volute body 321. For example, the transition section 322 and the volute body 321 may be bolted. The upper part of the volute 32 is a transition section 322, the lower part of the volute 32 is a volute body 321, the lower end of the transition section 322 is connected with the volute body 321, and the transition section 322 is provided with an upper wall surface, a front wall surface, a rear wall surface, a left wall surface and a right wall surface.

In the present embodiment, the air outlet 3221 is disposed on the upper wall surface of the transition section 322, and the air outlet 3222 is disposed on the front wall surface of the transition section 322. It is understood that the air outlet 3221 and the air blowing port 3222 may be disposed on any two of the upper wall, the front wall, the rear wall, the left wall, and the right wall, for example, or the air outlet 3221 may be disposed on the upper wall of the transition section 322 and the air blowing port 3222 may be disposed on the front wall of the transition section 322.

Because the transition section 322 of the range hood provided by the embodiment of the utility model is detachably connected with the volute body 321, the volute body 321 and the transition section 322 can be separately processed and manufactured respectively and then are spliced into a whole, so that the volute 32 is convenient to produce and manufacture, the structural design is reasonable, and the practicability is high.

In some embodiments, as shown in fig. 4, the range hood further includes a first heating member 5, the first heating member 5 being provided on at least one of the scroll casing 32 and the impeller 31. According to the range hood disclosed by the embodiment of the utility model, the first heating element 5 is arranged on the volute 32 or the impeller 31, so that oil stains on the volute 32 or the impeller 31 can be quickly dissolved, the oil stains on the volute 32 or the impeller 31 can be more easily cleaned by the airflow sprayed by the blowing pipe 411, and the efficiency of cleaning the oil stains by the range hood is further improved, as shown in fig. 4, the first heating element 5 is arranged on the outer peripheral wall of the volute 32. According to the range hood, the first heating member 5 is arranged on the outer peripheral wall of the volute, so that the first heating member 5 can be conveniently mounted and dismounted, and the range hood is good in practicability. For example, the first heating member 5 may be a heating sheet or a heating wire.

Further, as shown in fig. 4, the range hood further comprises a second heating member 6, and the second heating member 6 is arranged on the oil net 2. According to the range hood disclosed by the embodiment of the utility model, the second heating element 6 is arranged on the oil screen 2, so that the oil stain on the oil screen 2 can be molten more quickly, the oil stain on the oil screen 2 can be cleaned more easily by the air flow sprayed by the oil screen nozzle 413, and the oil stain cleaning efficiency of the range hood disclosed by the embodiment of the utility model is further improved. For example, the second heating member 6 may be a heating sheet or a heating wire.

In some embodiments, the cleaning assembly 4 further comprises an atomizing component 42, the atomizing component 42 comprises an atomizer 421 and a liquid storage tank 422 connected to the atomizer 421, the atomizer 421 is communicated with the blowing component 41, and the atomizer 421 is used for atomizing the cleaning liquid in the liquid storage tank 422 and delivering the cleaning liquid to the blowing component 41 to spray the atomized cleaning liquid onto at least one of the cleaning liquid and the cleaning liquid. In other words, one end of the blowpipe 411 communicates with the blowhole 3222, and the other end of the blowpipe 411 is directed toward one of the impeller 31, the inner wall of the scroll case 32, and the oil mesh 2, or the other end of the blowpipe 411 is branched into two lines which are directed toward any two of the impeller 31, the inner wall of the scroll case 32, and the oil mesh 2, respectively, or the other end of the blowpipe 411 is branched into three lines which are opposed to the impeller 31, the inner wall of the scroll case 32, and the oil mesh 2, respectively. According to the range hood disclosed by the embodiment of the utility model, the atomization component 42 is arranged, so that the cleaning liquid can be atomized and conveyed into the blowing pipe 411, the speed of separating oil stains from the fan 3 is further increased, and the cleaning effect of the range hood is further improved.

Further, the atomizer 421 and the liquid storage container 422 are detachably connected, and when the atomizer 421 and the liquid storage container 422 need to be replaced in the use process, the range hood provided by the embodiment of the utility model can be used for quickly replacing the atomizer 421 and the liquid storage container 422 which have faults, so that the practicability is high.

For example, as shown in fig. 3, a connection pipe 423 is provided between the atomizer 421 and the reservoir 422, the atomizer 421 is detachably connected to the connection pipe 423, and the reservoir 422 is detachably connected to the connection pipe 423. According to the range hood provided by the embodiment of the utility model, the atomizer 421 and the liquid storage container 422 are detachably connected together, so that the atomizer 421 and the liquid storage container 422 are convenient to disassemble and assemble. When atomizer 421 damages or the cleaning solution in the stock solution container 422 exhausts, conveniently change atomizer 421 or stock solution container 422 alone, and then promote user experience.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "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 utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (16)

1. A range hood, comprising:

a cigarette machine body (1);

the oil screen (2) is arranged in the range hood body (1);

the fan (3) is arranged in the cigarette machine body (1), the fan (3) comprises a volute (32) and an impeller (31), an air suction opening (3223), an air exhaust opening (3221) and an air blowing opening (3222) are formed in the volute (32), the air blowing opening (3222) is closer to the air exhaust opening (3221) than the air suction opening (3223), the air suction opening (3223) is approximately circular, and the impeller (31) is installed at the position of the air suction opening (3223) in the volute (32);

a cleaning assembly (4), the cleaning assembly (4) comprising a blowing component (41), the blowing component (41) having a first end and a second end, the first end of the blowing component (41) being in communication with the blowing port (3222), the second end of the blowing component (41) blowing towards at least one of the inner wall of the volute (32), the impeller (31) and the oil screen (2) to sweep oil contamination thereon.

2. A hood according to claim 1, characterized in that the second end of the blowing part (41) blows air simultaneously towards the oil screen (2), the impeller (31) and an inner wall portion of the volute (32) opposite to the outer circumferential surface of the impeller (31).

3. A range hood according to claim 1, characterized in that the blowing part (41) is arranged in the body (1) of the range hood, the blowing port (3222) is arranged on the front wall surface of the volute (32) and at least part of the blowing part (41) is positioned in front of the fan (3).

4. A hood according to claim 3, characterized in that said blowing part (41) comprises an air booster (414) and a blowpipe (411), said air booster (414) communicating with said blowport (3222) and being located in front of said fan (3), a first end of said blowpipe (411) communicating with said air booster (414), a second end of said blowpipe (411) blowing air towards at least one of the inner wall of said volute (32), said impeller (31) and said oil net (2).

5. A range hood according to claim 4, characterized in that the blowing part (41) further comprises a fan nozzle (412), the fan nozzle (412) communicating with the second end of the blowing pipe (411) and protruding into the volute (32), the fan nozzle (412) being adapted to blow air to at least one of the inner wall of the volute (32) and the impeller (31).

6. A range hood according to claim 4, characterized in that the blowing part (41) further comprises a blowing box (415), the blowing box (415) being connected to the volute (32), the blowing box (415) having an air inlet communicating with the blowing opening (3222) and an air outlet connected to the air booster (414), the air inlet being provided with a filter screen (4151).

7. A hood according to claim 4, characterized in that said blowing part (41) further comprises an oil net nozzle (413), said oil net nozzle (413) communicating with a second end of said blowing pipe (411), said oil net nozzle (413) having a jet port (4131) opposite to said oil net (2) to blow air toward said oil net (2).

8. A range hood according to claim 1, characterized in that the fan (3) further comprises a valve member (33), the valve member (33) comprising a flap (331), the flap (331) being rotatably mounted on the volute (32) and having a first position in which the flap (331) closes the air blowing opening (3222) and opens the air exhaust opening (3221) and a second position in which the flap (331) opens the air blowing opening (3222) and closes the air exhaust opening (3221).

9. A hood as claimed in claim 8, characterized in that said flap (331) also has a third position in which said flap (331) opens simultaneously said blowing opening (3222) and air outlet (3221).

10. A hood fan according to claim 9, characterized in that the valve member (33) further comprises a drive motor (332), said drive motor (332) being connected to the flap (331) for driving the flap (331) in rotation.

11. A range hood according to claim 1, characterized in that the volute (32) comprises a volute body (321) and a transition section (322), the air suction opening (3223) is arranged on the volute body (321), the air exhaust opening (3221) and the air blowing opening (3222) are arranged on the transition section (322), and the transition section (322) is detachably connected with the volute body (321).

12. A hood according to claim 1, characterized in that it further comprises a first heating element (5), said first heating element (5) being provided on at least one of said volute (32) and said impeller (31).

13. A hood according to claim 12, characterized in that the first heating element (5) is provided on the peripheral wall of the volute (32).

14. A range hood as claimed in claim 1, characterized by further comprising a second heating element (6), said second heating element (6) being arranged on said oil network (2).

15. A hood according to any of the claims 1-14, characterized in that the cleaning assembly (4) further comprises an atomizing means (42), said atomizing means (42) comprising an atomizer (421) and a reservoir (422) connected to said atomizer (421), said atomizer (421) being in communication with said blowing means (41), said atomizer (421) being adapted to atomize cleaning liquid in said reservoir (422) and to feed it into said blowing means (41) for spraying atomized cleaning liquid onto said at least one.

16. A range hood according to claim 15, characterized in that the atomizer (421) and the reservoir (422) are detachably connected.

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