CN220648377U - Fume exhaust fan - Google Patents

Abstract

The application discloses range hood, range hood include casing, fan and fender cistern, and the casing has the back plate, and the fan has the spiral case, and in the casing was located to the spiral case, the below of spiral case was located to the fender cistern and open up, is suitable for accepting the liquid that the spiral case flowed out, encloses between fender cistern and the back plate and establishes the overflow mouth. The liquid flowing out of the volute flows into the liquid blocking groove, an overflow port is formed between the rear plate and the liquid blocking groove in a surrounding mode, the liquid flows along the rear plate when flowing out of the liquid blocking groove through the overflow port, the liquid is prevented from being scattered by airflow and scattered, noise is reduced, and liquid is better collected.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a range hood.

Background

The range hood can produce liquid (greasy dirt, water and the like) in the oil suction process and the cleaning process by utilizing steam, the liquid flows downwards from the volute and drops into the oil collecting tank, the dropping direction of the liquid is opposite to the flowing direction of the air flow, the collection of the liquid is not facilitated, and even the air flow can lead the liquid to splash, so that noise is generated.

Disclosure of Invention

The present application aims to solve, at least to some extent, one of the technical problems in the related art. For this purpose, the application provides a range hood.

To achieve the above object, the present application discloses a range hood, the range hood includes:

a housing having a rear plate;

the fan is provided with a volute, and the volute is arranged in the shell;

and the liquid blocking groove is arranged below the volute and is opened upwards and is suitable for receiving liquid flowing out of the volute, and an overflow port is arranged between the liquid blocking groove and the rear plate in a surrounding manner.

In some embodiments of the present application, the liquid blocking groove comprises a first plate and a second plate, the first plate and the second plate are intersected to be V-shaped, the first plate is attached to the rear plate, and the second plate is longer than the first plate and is in clearance fit with the rear plate so as to enclose the overflow port.

In some embodiments of the present application, the range hood includes a safety net disposed upstream of the blower, and the liquid blocking tank is disposed on the safety net.

In some embodiments of the present application, the safety net includes a cross bar provided on an inner side of the first plate to press the first plate against the rear plate.

In some embodiments of the present application, the liquid blocking groove and the safety network interface are connected and/or welded.

In some embodiments of the present application, the range hood includes a guide cone, the guide cone is disposed below the liquid blocking groove, and the liquid blocking groove extends to the left and right sides of the guide cone.

In some embodiments of the present application, the casing has a baffle, the baffle is located the place ahead of back plate, the baffle with be equipped with the water conservancy diversion chamber between the back plate, the water conservancy diversion awl is located the water conservancy diversion chamber just will the water conservancy diversion chamber separates into first water conservancy diversion chamber and second water conservancy diversion chamber, the baffle is equipped with first air intake and second air intake, first air intake with first water conservancy diversion chamber corresponds the intercommunication, the second air intake with the second water conservancy diversion chamber corresponds the intercommunication.

In some embodiments of the present application, the range hood further includes a liquid guiding groove, where the liquid guiding groove is disposed on the volute and is adapted to receive the liquid flowing out of the volute, and the liquid blocking groove is adapted to receive the liquid flowing out of the liquid guiding groove.

In some embodiments of the present application, the liquid guiding groove is disposed at the bottom of the volute and is disposed obliquely.

In some embodiments of the present application, the back plate includes a first back plate and locates the second back plate of first back plate below, first back plate with the second back plate passes through the turn-ups structure and connects, the part of turn-ups structure extends down and is located just over the liquid blocking groove, the end of liquid guiding groove is located just over the turn-ups structure.

In some embodiments of the present application, a notch facing away from the flange structure is provided at an end of the liquid guiding groove.

In this technical scheme, in the liquid flow direction that the spiral case flowed out keeps off the cistern, enclose between through back plate and the cistern and establish the overflow mouth, liquid can flow along the back plate when flowing out through the overflow mouth from the cistern, prevent to be blown away by the air current and mixed and disorderly splash, noise reduction realizes better the collection to liquid.

Additional advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other designs can be obtained according to the structures shown in these drawings without the need of creative efforts for a person skilled in the art.

Fig. 1 is a schematic view of a range hood according to some embodiments;

fig. 2 is a schematic view of a range hood in an operating state according to some embodiments;

FIG. 3 is a partial schematic view of a range hood according to some embodiments;

FIG. 4 is an enlarged view of the mark A in FIG. 3;

FIG. 5 is a partial schematic view of a range hood according to some embodiments;

FIG. 6 is an enlarged view of the mark B in FIG. 5;

fig. 7 is a cross-sectional view of a range hood in some embodiments;

FIG. 8 is an enlarged view of the mark C in FIG. 7;

FIG. 9 is an enlarged view of the mark D in FIG. 8;

FIG. 10 is a schematic diagram of an assembled safety net and a liquid baffle in some embodiments;

FIG. 11 is a schematic diagram of a liquid baffle in some embodiments;

FIG. 12 is a schematic diagram of a liquid baffle in some embodiments.

Reference numerals illustrate:

the device comprises a shell 1000, a rear plate 1100, a flanging structure 1101, a first rear plate 1110, a first flanging 1111, a second rear plate 1120, a second flanging 1121, a flow guide plate 1200, an air inlet 1210, a first air inlet 1211, a second air inlet 1212, a flow guide cavity 1300, a first flow guide cavity 1310 and a second flow guide cavity 1320;

blower 2000, volute 2100;

the liquid guide groove 3100, the notch 3110, the liquid blocking groove 3200, the first plate 3210, the second plate 3220, the overflow port 3330, the safety net 3300, the cross rod 3310 and the flow guide cone 3400.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided 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 in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The application provides a range hood, combine fig. 1, fig. 7, fig. 8 and fig. 9 to show, range hood includes casing 1000, fan 2000 and liquid blocking groove 3200, casing 1000 is including back plate 1100, fan 2000 is including setting up the spiral case 2100 in the casing 1000, liquid blocking groove 3200 sets up in the below of spiral case 2100, and liquid blocking groove 3200 is opened in the top orientation, liquid blocking groove 3200 is used for accepting the liquid that flows out from spiral case 2100, and carry out the water conservancy diversion to the liquid that flows out from spiral case 2100, enclose between back plate 1100 and the liquid blocking groove 3200 and establish overflow mouth 3330, liquid in the liquid blocking groove 3200 flows out liquid blocking groove 3200 from overflow mouth 3330. The liquid flowing out of the spiral case 2100 flows to the liquid blocking groove 3200, passes through the overflow port 3330 surrounded between the rear plate 1100 and the liquid blocking groove 3200, flows along the rear plate 1100 when flowing out of the liquid blocking groove 3200 through the overflow port 3330, prevents from being scattered by airflow, reduces noise, and better realizes collection of the liquid.

Specifically, the casing 1000 may be understood as a structure for covering the interior of the range hood, and in general, the casing 1000 is made of a sheet metal part, and of course, the casing 1000 may be made of other materials. Referring to fig. 7, in this embodiment, the casing 1000 includes a rear plate 1100, the rear plate 1100 is referred to as a kitchen, a side of the kitchen facing the user is a front side of the kitchen, a side facing away from the user is a rear side of the kitchen, a left side corresponds to a left hand of the user, a right side corresponds to a right hand of the user, and generally, the rear plate 1100 is attached to a wall. The rear plate 1100 may be a complete plate or may be formed by connecting a plurality of plates (two or more plates).

The blower 2000 is disposed inside the casing 1000, and it is understood that the blower 2000 is disposed inside the casing 1000 as long as a portion of the blower 2000 is located inside the casing 1000, for example, the scroll 2100 of the blower 2000 is disposed inside the casing 1000. The fan 2000 is a fluid machine, and increases the pressure of gas and discharges the gas by means of the input mechanical energy, in general, the fan 2000 includes a scroll 2100, an impeller (not shown in the figure) and a motor (not shown in the figure), the motor is connected to the impeller, the motor drives the impeller to rotate in the scroll 2100, the impeller forces the blade gas to rotate so as to apply work to the gas, the speed energy of the gas is converted into pressure energy by the effect of the scroll 2100, and after the gas is discharged from the impeller, the pressure in the impeller is reduced, so that new gas can be sucked into the scroll 2100, and continuous suction and discharge of the gas are realized.

In the cooking process, a user can generate more oil smoke, the gas pumped by the fan 2000 is mainly oil smoke, oil mist particles in the oil smoke can be attached to the impeller and the volute 2100 to form oil stains, the oil stains are separated from the impeller under the action of gravity and drop onto the volute 2100, and then flow downwards under the action of gravity and are separated from the volute 2100. In addition, after the range hood is used for a certain time, the oil stains adhere to the impeller and the volute 2100 to adversely affect the pumping and exhausting of the oil stains, so that the impeller and the volute 2100 need to be cleaned, steam is adopted to clean in the related art, the cleaning effect is improved under the action of high-temperature cleaning, the oil stains are effectively separated from the surfaces of the volute 2100 and the impeller, certain sewage is formed in the cleaning process by using the steam, and the sewage flows under the action of gravity and leaves the fan 2000. Hereinafter, the aforementioned liquid substances such as oil stains, sewage and the like will be described in terms of liquid.

In general, a sump (not shown) is disposed at a lower position of the range hood, and liquid needs to flow downward under the action of gravity to flow into the sump to be collected, so that a user can clean the range hood conveniently, and the fan 2000 is disposed at an upper position, so as to avoid occupying a space for cooking operation of the user. The liquid flows downwards, and the air current driven by the fan 2000 flows upwards, when the liquid drops off the volute 2100, the air current may blow away the liquid, so that the liquid is scattered randomly, and is unfavorable for the liquid to flow downwards, and the liquid hits the internal structure when scattered randomly, so that noise is generated. For this embodiment, by providing the liquid blocking groove 3200, the liquid blocking groove 3200 is disposed below the volute 2100, the liquid blocking groove 3200 is opened towards the upper direction, the liquid blocking groove 3200 receives the liquid flowing out of the volute 2100, that is, the liquid flowing out of the volute 2100 can fall into the liquid blocking groove 3200 from top to bottom, it is understood that the liquid blocking groove 3200 receives the liquid flowing out of the volute 2100, so long as the liquid flowing out of the volute 2100 enters the liquid blocking groove 3200, and the liquid may directly enter the liquid blocking groove 3200 or indirectly enter the liquid blocking groove 3200.

An overflow port 3330 is arranged between the liquid baffle tank 3200 and the rear plate 1100 in a surrounding manner, when the liquid entering the liquid baffle tank 3200 reaches a certain capacity, the liquid in the liquid baffle tank 3200 can be discharged from the overflow port 3330, and because the overflow port 3330 is formed by the rear plate 1100 and the liquid baffle tank 3200 in a surrounding manner, that is to say, the rear plate 1100 is adjacent to the overflow port 3330, when the liquid overflows from the overflow port 3330, the liquid can flow downwards along the rear plate 1100, the air flow driven by the fan 2000 has less influence on the liquid flowing along the rear plate 1100, so that the blowing-off of the liquid by the air flow can be avoided, the liquid can flow downwards along the rear plate 1100 to realize collection, and the noise is reduced.

In some embodiments of the present application, as shown in fig. 11 and 12, the liquid blocking groove 3200 includes a second plate 3220 and a first plate 3210, the second plate 3220 is disposed on the first plate 3210, the second plate 3220 is intersected with the first plate 3210 to form a V shape, the first plate 3210 needs to be attached to the rear plate 1100, and the second plate 3220 is set longer than the first plate 3210, so that clearance fit with the rear plate 1100 is achieved, and therefore, an overflow port 3330 is defined between the second plate 3220 and the rear plate 1100.

Specifically, the first plate 3210 and the second plate 3220 are manufactured in multiple manners, for example, the first plate 3210 and the second plate 3220 are two separate components connected together by a connecting means, or the first plate 3210 and the second plate 3220 may be integrally formed and formed by bending a whole plate, which is more convenient and quick. The first plate 3210 and the second plate 3220 form a V-shaped structure and are open towards the upper side, and the liquid can fall into the liquid baffle tank 3200 from top to bottom under the action of gravity. When the liquid blocking groove 3200 is installed, the first plate member 3210 needs to be attached to the rear plate 1100, and the first plate member 3210 may be directly connected to the rear plate 1100, or the first plate member 3210 may be abutted to the rear plate 1100 under the action of other components, so that the first plate member 3210 is tightly combined with the rear plate 1100, and since the second plate member 3220 is longer than the first plate member 3210, for example, in the left-right direction, the second plate member 3220 is longer than the first plate member 3210, the left end of the second plate member 3220 is far to the left than the left end of the first plate member 3210, the right end of the second plate member 3220 is far to the right than the right end of the first plate member 3210, or, the left end of the second plate member 3220 is far to the right than the right end of the first plate member 3210, and the right end of the second plate member 3220 is far to the left than the left end of the first plate member 3210. As shown in fig. 3 to 9, since the first plate member 3210 is attached to the rear plate 1100, the portion of the second plate member 3220 that is longer than the first plate member 3210 forms a clearance fit with the rear plate 1100, so that the overflow port 3330 is defined between the second plate member 3220 and the rear plate 1100, when the liquid enters the liquid blocking tank 3200, the equal portions of the first plate member 3210 and the second plate member 3220 together receive the liquid, and the liquid flows towards the left and right sides of the liquid blocking tank 3200 under the action of gravity, so that the liquid can leave through the overflow port 3330, and since the first plate member 3210 is attached to the rear plate 1100, the overflow port 3330 formed between the second plate member 3220 and the rear plate 1100 forms a small gap, so that the liquid can flow downward along the rear plate 1100 through the overflow port 3330.

In some embodiments of the present application, as shown in fig. 3, 5, 7, 8 and 10, the range hood further includes a safety net 3300, the safety net 3300 is disposed at an upstream position of the blower 2000, and the liquid blocking groove 3200 is disposed on the safety net 3300 and is combined with the safety net 3300 into a whole, so that after the safety net 3300 is mounted in place, the mounting of the liquid blocking groove 3200 can be achieved.

Specifically, the so-called safety net 3300 is a net structure for preventing foreign matters from entering the fan 2000, the fan 2000 needs to suck the cooking fume, along with the flow of the air flow, the foreign matters possibly enter the fan 2000 along with the air flow, such as paper, plastic packaging bags, etc., if the foreign matters possibly cause the fan 2000 to be blocked when entering the fan 2000 along with the air flow, the fan 2000 cannot rotate normally, therefore, by arranging the safety net 3300, the safety net 3300 is arranged at the upstream of the fan 2000, such as the safety net 3300 is arranged below the fan 2000, and the liquid blocking groove 3200 is arranged on the safety net 3300, after the safety net 3300 is arranged in place, the liquid blocking groove 3200 is also arranged in a position, so that the liquid blocking groove 3200 is arranged below the volute 2100, the structure of the safety net 3300 is fully utilized, the structure of arranging the liquid blocking groove 3200 at other positions is not needed, and the installation is realized more conveniently and rapidly in cooperation with the safety net 3300.

In some embodiments of the present application, as shown in connection with fig. 8 and 10, the safety net 3300 includes a cross bar 3310, and after the liquid baffle 3200 is disposed on the safety net 3300, the cross bar 3310 of the safety net 3300 is disposed on the inner side of the first plate member 3210, so that the first plate member 3210 ensures the fitting with the rear plate 1100, so that the liquid flows better along the rear plate 1100 when overflows from the overflow port 3330.

Specifically, because the first plate member 3210 needs to be attached to the back plate 1100 such that the gap between the second plate member 3220 and the back plate 1100 is as small as possible, ensuring that the liquid flows downward along the back plate 1100 when leaving the overflow port 3330, and because the liquid retaining groove 3200 is disposed on the safety net 3300, the tight fit between the liquid retaining groove 3200 and the back plate 1100 needs to be achieved by the force applied after the safety net 3300 is installed in place, in this embodiment, when the liquid retaining groove 3200 is installed on the safety net 3300, the cross bar 3310 on the safety net 3300 is disposed on the inner side of the first plate member 3210, that is, on the opposite side of the second plate member 3220, so that when the safety net 3300 is installed in place, the cross bar 3310 presses the first plate member 3210 against the back plate 1100, so that the first plate member 3210 forms a tight fit with the back plate 1100, ensuring that the liquid flows downward along the back plate 1100 when leaving the overflow port 3330.

Further, there are various connection modes between the liquid blocking groove 3200 and the safety net 3300, so long as the liquid blocking groove 3200 can be fixed on the safety net 3300, and because the safety net 3300 is of a net structure, the liquid blocking groove 3200 and the safety net 3300 can be fixed with each other in a clamping and/or welding mode for facilitating the mutual fixation between the liquid blocking groove 3200 and the safety net 3300.

In some embodiments of the present application, as shown in fig. 2, 3 and 5, the range hood further includes a guide cone 3400, where the guide cone 3400 is disposed below the liquid baffle groove 3200, and the liquid baffle groove 3200 extends to the left and right sides of the guide cone 3400, where the arrangement of the guide cone 3400 plays a role in guiding the airflow, so that the airflow is more stable, and the suction effect is effectively improved.

Specifically, the so-called flow guide cone 3400 is in a conical structure, the space where the flow guide cone 3400 is located is divided by the arrangement of the flow guide cone 3400, air flows from two sides of the flow guide cone 3400, and opposite impact of the air flow is avoided, so that the flow of the air flow can be accelerated, and the rapid suction of oil smoke is realized. And, the guiding cone 3400 mainly plays a role in guiding the air flow, so that the guiding cone 3400 extends approximately along the vertical direction, when the air flow enters a space where the guiding cone 3400 is located, the air flow can flow upwards under the guiding effect of the guiding cone 3400, invalid flow is avoided, energy loss is reduced, and the oil smoke sucking effect can be improved through the arrangement of the guiding cone 3400.

It is also possible to arrange the flow guiding cone 3400 by arranging the liquid blocking groove 3200, for example, as shown in fig. 3 and 5, the liquid blocking groove 3200 extends a certain length along the left-right direction, and in the left-right direction, the liquid blocking groove 3200 extends to two sides of the flow guiding cone 3400, that is, the overflow port 3330 of the liquid blocking groove 3200 on the left side is far to the left relative to the flow guiding cone 3400, while the overflow port 3330 of the liquid blocking groove 3200 on the right side is far to the right relative to the flow guiding cone 3400, when liquid flows out from the overflow port 3330 on the left side and the overflow port 3330 on the right side, the liquid flows downwards under the action of gravity and can be staggered with the flow guiding cone 3400 without encountering the flow guiding cone 3400, thereby avoiding the blocking of the flow guiding cone 3400, that is, the splashing under the action of the air flow guided by the flow guiding cone 3400 is avoided.

For example, as shown in fig. 2 and 7, the casing 1000 has a baffle 1200, the baffle 1200 is disposed in front of the rear plate 1100, a guide cavity 1300 is formed between the rear plate 1100 and the baffle 1200, the baffle 1200 is provided with an air inlet 1210, the air inlet 1210 communicates with the guide cavity 1300, and a guide cone 3400 is disposed in the guide cavity 1300. When the range hood works, oil smoke enters the flow guide cavity 1300 through the air inlet 1210, and the flow guide cone 3400 is arranged in the flow guide cavity 1300, so that air flow is guided to flow upwards rapidly under the action of the flow guide cone 3400.

In a further development, the air inlets 1210 include two air inlets 1210, one air inlet 1210 is a first air inlet 1211, the other air inlet 1210 is a second air inlet 1212, the first air inlet 1211 and the second air inlet 1212 are divided into left and right sides along the left and right direction, the diversion cavity 1300 is divided into left and right sides by the diversion cone 3400, the first diversion cavity 1310 corresponds to and is communicated with the first air inlet 1211 and the second diversion cavity 1320 corresponds to and is communicated with the second air inlet 1212, and the air flow entering the first diversion cavity 1310 from the first inlet and the air flow entering the second diversion cavity 1320 from the second air inlet 1212 are prevented from collision with each other under the diversion effect of the diversion cone 3400, so that the loss of energy is avoided, the suction of lampblack is facilitated, and the wind noise can be reduced.

In some embodiments of the present application, as shown in fig. 3, 5, 7 and 8, the range hood further includes a liquid guiding groove 3100, the liquid guiding groove 3100 is used for receiving the liquid flowing out of the volute 2100 and guiding the liquid flowing out of the volute 2100, the liquid blocking groove 3200 is used for receiving the liquid flowing out of the volute 2100 through the liquid guiding groove 3100, that is, the liquid flowing out of the volute 2100 flows to the liquid blocking groove 3100, and then flows to the liquid blocking groove 3200 under the guiding of the liquid guiding groove 3100, and by setting the cooperation of the liquid guiding groove 3100 and the liquid blocking groove 3200, the liquid guiding is more convenient. For example, the end of the liquid guiding tank 3100 is located above the liquid blocking tank 3200, and the liquid leaving the end of the liquid guiding tank 3100 directly flows into the liquid blocking tank 3200, or some intermediate members may be provided between the liquid guiding tank 3100 and the liquid blocking tank 3200, and the liquid discharged from the liquid guiding tank 3100 indirectly flows into the liquid blocking tank 3200.

In some embodiments of the present application, the sump 3100 is disposed at the bottom of the volute 2100, so as to better receive liquid flowing from the volute 2100, and the sump 3100 is disposed obliquely downward from the volute 2100, so that liquid better flows downward under the force of gravity, which in turn directs the liquid to the sump 3200.

In some embodiments of the present application, as shown in fig. 7 and 8, the back plate 1100 includes at least two back plates 1110 and 1120, respectively, the first back plate 1110 is disposed above the second back plate 1120, the second back plate 1120 is connected with the first back plate 1110 through a flanging structure 1101, the end of the liquid guiding groove 3100 is disposed directly above the flanging structure 1101, and a portion of the flanging structure 1101 extends downward to be disposed directly above the liquid blocking groove 3200.

Specifically, the rear plate 1100 includes at least two pieces of the rear plate 1100 that are connected to each other, so as to reduce the difficulty in manufacturing the rear plate 1100, especially, for some range hoods, the rear plate 1100 includes an upper half and a lower half, the upper half is mainly used for installing the blower 2000, and the lower half is mainly used for gathering smoke, so that the dimensions of the upper half are different from those of the lower half, and in order to facilitate the processing of the rear plate 1100, the first rear plate 1110 and the second rear plate 1120 are connected to each other to adapt to the structure of the upper half and the structure of the lower half.

In order to enhance the connection strength between the first back plate 1110 and the second back plate 1120, in this embodiment, the first back plate 1110 and the second back plate 1120 are connected to each other through the flanging structure 1101, that is, the first back plate 1110 has a first flanging 1111, the second back plate 1120 has a second flanging 1121, the first flanging 1111 and the second flanging 1121 are overlapped to form the flanging structure 1101, and the flanging structure 1101 can be welded, screwed, etc. to fix the first back plate 1110 and the second back plate 1120.

With the flange structure 1101, the liquid guiding groove 3100 needs to extend from the volute 2100 towards the flange structure 1101 until the end of the liquid guiding groove 3100 is located directly above the liquid blocking groove 3200, namely, directly above the liquid guiding groove 3100, that is, along the direction from top to bottom, the end of the liquid guiding groove 3100 coincides with the flange structure 1101, and part of the flange structure 1101 extends downwards and is located directly above the liquid blocking groove 3200, so that liquid can flow to the flange structure 1101 when leaving the liquid guiding groove 3100, and because the flange structure 1101 is close to the rear plate 1100, the liquid flows to the flange structure 1101 and then is less influenced by air flow when flowing downwards from the flange structure 1101, and the liquid can fall into the liquid guiding groove 3100 after leaving the flange structure 1101.

Optionally, the end of the liquid guiding groove 3100 may be abutted with the flanging structure 1101 to enhance the stability of the liquid guiding groove 3100, and since the liquid guiding groove 3100 is disposed on the volute 2100, when the end of the liquid guiding groove 3100 is abutted with the flanging structure 1101, the cantilever structure of the liquid guiding groove 3100 is avoided, so that the liquid guiding groove 3100 can be inhibited from vibrating under the action of air flow.

Further, as shown in connection with fig. 8, in some embodiments of the present application, the end of the liquid guiding groove 3100 is provided with a notch 3110, the notch 3110 faces away from the flanging structure 1101, and accumulation of liquid between the end of the liquid guiding groove 3100 and the flanging structure 1101 is avoided, so that the liquid is more quickly separated from the liquid guiding groove 3100.

Specifically, when the liquid is separated from the liquid guiding groove 3100 and flows to the flanging structure 1101, the liquid needs to flow from the flanging structure 1101 to the liquid blocking groove 3200, and the liquid may have a certain viscosity, so that the liquid is easy to accumulate at the tail end of the liquid guiding groove 3100 and the flanging structure 1101, and the liquid can be separated from the liquid guiding groove 3100 under the action of gravity through the notch 3110 in the process of flowing to the flanging structure 1101 by arranging the notch 3110 at the tail end of the liquid guiding groove 3100, so that the accumulation between the tail end of the liquid guiding groove 3100 and the flanging structure 1101 can be avoided. The opening 3110 faces away from the flange 1101, i.e. in a top-down direction, and the baffle recess 3200 is directly visible through the opening 3110.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structural changes made in the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims (11)

1. A range hood, comprising:

a housing having a rear plate;

the fan is provided with a volute, and the volute is arranged in the shell;

and the liquid blocking groove is arranged below the volute and is opened upwards and is suitable for receiving liquid flowing out of the volute, and an overflow port is arranged between the liquid blocking groove and the rear plate in a surrounding manner.

2. The range hood of claim 1 wherein the liquid baffle includes a first plate and a second plate, the first plate and the second plate intersecting to form a V-shape, the first plate being attached to the rear plate, the second plate being longer than the first plate and in clearance fit with the rear plate to enclose the overflow port.

3. The range hood of claim 1 or 2, wherein the range hood comprises a safety net disposed upstream of the blower, and the liquid blocking tank is disposed on the safety net.

4. The range hood of claim 3 wherein the safety net includes a cross bar disposed on an inner side of the first plate member to press the first plate member against the rear plate.

5. A range hood according to claim 3, wherein the liquid baffle and the safety network are joined and/or welded.

6. The range hood of claim 1, wherein the range hood comprises a guide cone, the guide cone is arranged below the liquid blocking groove, and the liquid blocking groove extends to the left side and the right side of the guide cone.

7. The range hood according to claim 6, wherein the casing has a baffle, the baffle is disposed in front of the rear plate, a flow guiding cavity is disposed between the baffle and the rear plate, the flow guiding cone is disposed in the flow guiding cavity and divides the flow guiding cavity into a first flow guiding cavity and a second flow guiding cavity, the baffle is provided with a first air inlet and a second air inlet, the first air inlet and the first flow guiding cavity are correspondingly communicated, and the second air inlet and the second flow guiding cavity are correspondingly communicated.

8. The range hood of claim 1 further comprising a liquid sump disposed in the volute and adapted to receive liquid from the volute, the liquid sump being adapted to receive liquid from the liquid sump.

9. The range hood of claim 8, wherein the liquid guide groove is provided at the bottom of the scroll case and is inclined.

10. The range hood of claim 8 wherein the back plate comprises a first back plate and a second back plate disposed below the first back plate, the first back plate and the second back plate being connected by a flange structure, a portion of the flange structure extending downward and being located directly above the liquid baffle slot, and a distal end of the liquid guide slot being located directly above the flange structure.

11. The range hood of claim 10 wherein the end of the liquid guide slot is provided with a notch facing away from the flange structure.