CN216114244U - Supercharging device and range hood - Google Patents

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to a supercharging device and a range hood. The supercharging device comprises a supercharging component and an air flow channel; an air outlet cover is arranged at the air outlet of the range hood and is provided with an air outlet channel communicated with the air outlet; the pressure boost spare is provided with the spout, and the spout passes through airflow channel and air-out passageway intercommunication, and the spout can spout the air current into the collection petticoat pipe of lampblack absorber. This lampblack absorber includes above-mentioned supercharging device. The utility model aims to provide a supercharging device and a range hood so as to solve the technical problem that the range hood in the prior art is poor in smoke absorption effect.

Description

Supercharging device and range hood

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a supercharging device and a range hood.

Background

The range hood is also called as a range hood, and is a kitchen appliance used for purifying the kitchen environment. The lampblack absorber generally includes the organism that is equipped with the fan in and connects in the collection petticoat pipe of organism, and is provided with the collection smoke chamber with the culinary art environment intercommunication in the collection petticoat pipe. During cooking, a large amount of oil smoke is generated above the cooking bench, a negative pressure area is formed in the smoke collection cavity under the action of the fan, the oil smoke is firstly collected in the smoke collection cavity, and then the purified oil smoke is discharged to the external environment, so that the purpose of purifying the kitchen environment is achieved.

However, in the prior art, the range hood has a poor oil smoke absorption effect, oil smoke is easy to escape and cannot be pumped away by the range hood, the environment of a kitchen is easily affected, and the health of a user is also affected.

Therefore, the application provides a novel supercharging device and a range hood aiming at the problems.

SUMMERY OF THE UTILITY MODEL

The first purpose of the present invention is to provide a pressure boosting device to alleviate the technical problem of poor effect of oil smoke absorption of the range hood in the prior art.

The second purpose of the utility model is to provide a range hood to relieve the technical problem of poor effect of oil smoke absorption of the range hood in the prior art.

In view of the above first object, the present invention provides a supercharging apparatus including a supercharging member and an airflow passage;

an air outlet cover is arranged at the air outlet of the range hood, and an air outlet channel communicated with the air outlet is arranged on the air outlet cover;

the pressure boost spare is provided with the spout, the spout passes through airflow channel with air-out passageway intercommunication, just the spout can spout the air current into in the collection petticoat pipe of lampblack absorber.

Furthermore, the extending direction of the air outlet channel is consistent with the air outlet direction of the air outlet;

the air outlet cover is provided with a first port and a communicating channel, the communicating channel is communicated with the air outlet channel through the first port, and the airflow channel is communicated with the communicating channel.

Further, the first port is perpendicular to the extending direction of the air outlet channel.

Furthermore, the communication channel comprises a first channel communicated with the first port, a second port is further formed in the air outlet cover, and the first channel is communicated with the airflow channel through the second port;

wherein an extending direction of the first passage is changed reciprocally from the first port to the second port.

Further, the first ports are arranged in a plurality and are arranged at intervals along the circumferential direction of the air outlet channel;

the first channel and the second port are provided with a plurality of channels, and the first channels, the second ports and the first ports are in one-to-one correspondence respectively.

Further, the communicating channel further comprises a second channel, the second ports are communicated with the second channel, and the second channel is communicated with the airflow channel through a third port.

Furthermore, the fume collecting hood is provided with a fume collecting cavity and a fume inlet communicated with the fume collecting cavity, and the nozzle can spray airflow into the fume collecting cavity;

the pressure boost piece is close to advance the mouth setting, just the spout is located advance the mouth and keep away from one side in collection smoke chamber.

Furthermore, a filtering oil screen is arranged at the position of the smoke inlet, a plurality of filtering holes are formed in the filtering oil screen, and airflow sprayed from the nozzle can enter the smoke collection cavity after passing through the filtering holes.

Furthermore, a pressurizing channel communicated with the airflow channel is arranged in the pressurizing piece, and the nozzle is communicated with the pressurizing channel;

the plurality of nozzles are arranged and spaced along the extension direction of the pressurizing channel; alternatively, the nozzle is a long hole extending in the extending direction of the pressurizing passage.

Further, along the extending direction of the pressurizing channel, the pressurizing piece is an annular pipe extending along the circumferential direction of the smoke inlet, and the nozzle is arranged close to one side of the center line of the annular pipe.

Furthermore, the pressurizing part comprises a body with a first end and a second end which are arranged oppositely, the second end is bent towards the direction close to the first end to form the pressurizing channel in the body, the first end and the second end are arranged in a staggered mode to form the nozzle, and the first end is arranged close to the pressurizing channel relative to the second end.

Further, the first end is provided with a guide portion capable of guiding the airflow in the pressurizing passage to the nozzle.

Further, a drainage channel communicated with the nozzle is formed between one side of the body close to the second end and the guide part;

one surface of the guiding part, which is close to the drainage channel, is a smooth transition surface, and/or one surface of the body, which is close to the drainage channel, is a smooth transition surface.

Further, along the extending direction of the drainage channel, from the pressurizing channel to the nozzle, the cross section of the drainage channel is gradually reduced along the direction perpendicular to the extending direction of the drainage channel.

Furthermore, the supercharging device also comprises an elbow and a connecting pipe, and the air outlet is communicated with the supercharging channel through the elbow and the connecting pipe.

Furthermore, the range hood also comprises a machine body internally provided with a fan, and the fume collecting hood is arranged below the machine body;

the connecting pipe comprises a first pipe section penetrating through the machine body and a second pipe section arranged in the smoke collection cavity, the air outlet is communicated with the first pipe section, and the pressurizing channel is communicated with the second pipe section;

the first pipe section is a rectangular pipe, and along the extending direction perpendicular to the first pipe section, the smaller outer wall surface of the first pipe section projects on the fan.

Furthermore, two smoke inlet openings of the smoke collecting hood are arranged, two supercharging pieces are arranged, and the two supercharging pieces are respectively arranged corresponding to the two smoke inlet openings;

the supercharging device also comprises a three-way pipe, and the connecting pipe and the supercharging channels of the two supercharging parts are communicated through the three-way pipe.

By adopting the technical scheme, the supercharging device has the following beneficial effects:

among this supercharging device, because the air-out passageway communicates with the air outlet of lampblack absorber, and the spout passes through airflow channel and air-out passageway intercommunication, the air outlet intercommunication of spout and lampblack absorber has been realized, consequently the lampblack absorber can get into air-out passageway and airflow channel and spout from the spout through air outlet combustion gas flow partly, wherein, the spout can spout the air current into in the collection petticoat pipe, and simultaneously, spout spun air current can bring the surrounding air current into in the collection petticoat pipe, that is, can form the negative pressure near the spout, be favorable to the air to get into in the collection petticoat pipe, thereby the oil absorption cigarette effect of lampblack absorber has been improved, prevent to a certain extent the oil smoke escape, be favorable to guaranteeing kitchen environment and user's health.

Based on the second purpose, the utility model provides a range hood, which comprises a body, a smoke collecting hood and a supercharging device, wherein the body is internally provided with a fan;

the smoke collecting cover is provided with a smoke collecting cavity and a smoke inlet communicated with the smoke collecting cavity, the machine body is provided with an air outlet, and air can be discharged from the air outlet after passing through the smoke inlet and the smoke collecting cavity;

and the airflow channel of the supercharging device is communicated with the air outlet.

By adopting the technical scheme, the range hood disclosed by the utility model has the following beneficial effects:

through set up above-mentioned supercharging device in the lampblack absorber, corresponding, this lampblack absorber has above-mentioned supercharging device's all advantages, and no longer repeated here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is one of schematic structural diagrams of a range hood provided by an embodiment of the present invention;

fig. 2 is a second schematic structural diagram (not shown in the blower) of the range hood according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a partial structure of the range hood shown in FIG. 2;

fig. 4 is a sectional view of a plenum of a range hood provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a supercharging device and an air outlet housing of a range hood provided by the embodiment of the utility model;

FIG. 6 is a schematic view of a portion of the supercharging device and the outlet housing shown in FIG. 5;

FIG. 7 is an enlarged view of a portion of the supercharging device and the outlet housing shown in FIG. 6;

fig. 8 is one of schematic structural diagrams of an air outlet cover and an elbow of the range hood provided by the embodiment of the utility model;

fig. 9 is a second schematic structural diagram of an air outlet cover and an elbow of the range hood according to the embodiment of the present invention.

Reference numerals:

1-a supercharging device; 11-a plenum; 12-a nozzle; 13-a boost channel; 14-a second end; 15-a guide; 16-a drainage channel; 17-bend; 181-first tube section; 182-a second tube segment; 19-a tee pipe;

2-body; 21-a fan;

3-smoke collecting hood; 31-a smoke collection cavity;

4-filtering the oil screen; 41-filtration pore;

5-air outlet cover; 51-an air outlet channel; 52-first port; 53-first channel; 54-a second port; 55-a second channel; 56-third port.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 and fig. 2, the present embodiment provides a supercharging device 1, where the supercharging device 1 includes a supercharging component 11 and an air flow passage; an air outlet cover 5 is arranged at the air outlet of the range hood, and an air outlet channel 51 communicated with the air outlet is arranged on the air outlet cover 5; the pressurizing piece 11 is provided with a nozzle 12, the nozzle 12 is communicated with the air outlet channel 51 through an air flow channel, and the nozzle 12 can spray air flow into the fume collecting hood 3 of the range hood.

In the supercharging device, because the air outlet channel 51 is communicated with the air outlet of the range hood, and the nozzle 12 is communicated with the air outlet channel 51 through the airflow channel, the communication between the nozzle 12 and the air outlet of the range hood is realized, therefore, part of the airflow discharged through the air outlet can enter the air outlet channel 51 and the airflow channel and is sprayed out from the nozzle 12, wherein, the nozzle 12 can spray the airflow into the fume collecting hood 3, meanwhile, the airflow sprayed out from the nozzle 12 can bring the surrounding airflow into the fume collecting hood 3, namely, a negative pressure can be formed near the nozzle 12, which is beneficial to the air entering the fume collecting hood 3, thereby improving the fume suction effect of the range hood, preventing the oil fume from escaping to a certain extent, and being beneficial to ensuring the health of the kitchen environment and users.

Preferably, referring to fig. 3 and 4, in the present embodiment, the smoke collecting hood 3 is provided with a smoke collecting chamber 31 and a smoke inlet communicated with the smoke collecting chamber 31, and the nozzle 12 can inject airflow into the smoke collecting chamber 31. The pressurizing piece 11 is arranged close to the smoke inlet, and the nozzle 12 is positioned at one side of the smoke inlet far away from the smoke collecting cavity 31.

With the arrangement, the air flow at the air outlet can be sprayed into the smoke collection cavity 31 from one side of the smoke inlet far away from the smoke collection cavity 31 through the nozzle 12 after passing through the air flow channel, meanwhile, the air flow sprayed out of the nozzle 12 plays a role of ejecting flow, the air mixed with the oil smoke outside the smoke collection cavity 31 can be brought into the smoke collection cavity 31, and the oil smoke partially escaping in a back-carrying manner is realized. That is, the range hood sprays airflow into the smoke collection cavity 31 at a certain flow rate through the nozzle 12, and the larger the flow rate of the airflow is, the larger the negative pressure generated by the environment near the nozzle 12 is, which is more beneficial to bringing the air and the oil smoke outside the smoke collection cavity 31 into the smoke collection cavity 31.

Preferably, referring to fig. 2 and fig. 3, in this embodiment, a filtering oil screen 4 is disposed at the smoke inlet, a plurality of filtering holes 41 are disposed on the filtering oil screen 4, and the airflow ejected from the nozzle 12 can enter the smoke collection chamber 31 after passing through the filtering holes 41.

Wherein, the oil filtering net 4 is used for filtering impurities such as oil stains or particles in the air.

With the arrangement, before the outside air passes through the smoke inlet and enters the smoke collection cavity 31, the outside air is firstly filtered by the filter oil net 4, impurities are attached to the filter oil net 4, and the air passes through the filter holes 41 and enters the smoke collection cavity 31, so that the purification degree of the air is improved, and the air pollution of more impurities on the range hood is prevented.

Preferably, referring to fig. 3 and 4, a pressurizing channel 13 communicated with the air flow channel is arranged in the pressurizing piece 11, and the nozzle 12 is communicated with the pressurizing channel 13; the plurality of nozzles 12 are arranged, and the plurality of nozzles 12 are spaced along the extending direction of the pressurizing channel 13; alternatively, in the present embodiment, the nozzle 12 is a long hole extending in the extending direction of the pressurizing passage 13.

With the arrangement, the air flow at the air outlet can sequentially pass through the air flow channel and the pressurizing channel 13 and then is sprayed into the smoke collecting cavity 31 through the nozzle 12.

Wherein, a plurality of nozzles 12 are provided, and the plurality of nozzles 12 are spaced along the extending direction of the pressurizing channel 13; or, in this embodiment, the nozzle 12 is a long hole extending along the extending direction of the pressurizing channel 13, and the area of the nozzle 12 is increased, so that the air flow sprayed from the nozzle 12 is increased, and more external air is favorably brought into the smoke collection chamber 31.

Preferably, referring to fig. 2 and 5, in the present embodiment, along the extending direction of the pressurizing passage 13, the pressurizing member 11 is an annular tube extending along the circumferential direction of the smoke inlet, and the nozzle 12 is disposed near one side of the center line of the annular tube.

Wherein, the outside air can pass through the supercharging component 11 from one side of the supercharging component 11 close to the central line, and because the supercharging component 11 is arranged close to the smoke inlet, at the same time, the outside air also passes through the smoke inlet and enters the smoke collection cavity 31.

By the arrangement, negative pressure can be formed around the circumference of the smoke inlet, the area of a negative pressure area at the smoke inlet is increased, and the smoke suction effect of the range hood is further improved.

Preferably, referring to fig. 4, in the present embodiment, the pressure increasing member 11 includes a body having a first end and a second end 14 disposed opposite to each other, the second end 14 is bent toward the first end to form a pressure increasing channel 13 in the body, the first end and the second end 14 are disposed alternately to form the nozzle 12, and the first end is disposed close to the pressure increasing channel 13 opposite to the second end 14.

It should be noted that the gap formed between the first end and the second end 14 in a staggered manner is the nozzle 12, so that the air entering the pressurizing passage 13 can flow along the pressurizing passage 13 and be ejected from the nozzle 12.

With the arrangement, the pressurizing part 11 can be integrally formed and produced, so that the pressurizing part 11 is simpler and more convenient to produce, and the operation of additionally punching to form the nozzle 12 is not needed.

The nozzle 12 preferably extends from the bottom to the top and slantingly toward the filter hole 41, because the air is blown out toward the smoke collection chamber 31 by the nozzle 12, passes through the smoke inlet and the smoke collection chamber 31 in order from the outside environment, and is then discharged from the air outlet.

Preferably, with continued reference to fig. 4, in the present embodiment, the first end is provided with a guiding portion 15 capable of guiding the airflow in the pressurizing passage 13 to the nozzle 12.

In the process of flowing from the pressurizing channel 13 to the nozzle 12, when the airflow contacts the guide portion 15, the airflow can flow along the guide portion 15 under the coanda effect, and the original flow direction of the airflow changes from downward inclination to upward inclination. That is, the guide portion 15 is provided to guide the air flow in the pressurizing passage 13 to the nozzle 12, so that the air flow in the pressurizing passage 13 is rapidly ejected, thereby reducing the aerodynamic noise.

Preferably, referring to fig. 4, in the present embodiment, a drainage channel 16 communicating with the nozzle 12 is formed between the guide portion 15 and a side of the body near the second end 14.

Wherein, one surface of the guiding part 15 close to the drainage channel 16 is a smooth transition surface, or one surface of the body close to the drainage channel 16 is a smooth transition surface. Preferably, one surface of the guiding portion 15 close to the drainage channel 16 is a smooth transition surface, and the other surface of the body close to the drainage channel 16 is a smooth transition surface.

Due to the arrangement, noise generated by collision of the air flow and the guide part 15 and the surface of the body close to the drainage channel 16 is reduced, and the cooking experience of a user is improved.

Preferably, referring to fig. 4, in the present embodiment, along the extending direction of the flow guide channel 16, from the pressurizing channel 13 to the nozzle 12, the cross section of the flow guide channel 16 is gradually reduced along the direction perpendicular to the extending direction.

Such setting makes the velocity of flow that the air current passes through flow guide channel 16 increase gradually, knows by bernoulli's principle, and flow guide channel 16 is from pressure boost passageway 13 to spout 12, and pressure is littleer and littleer to pressure differential with external environment is bigger and bigger, makes flow guide channel 16 form the passageway with higher speed of air current, thereby is favorable to outside air current to spout 12 department along with spout 12 spun air current entering smoke collecting cavity 31, makes the oil absorption cigarette ability promotion of lampblack absorber, prevents to run the cigarette and appears.

Preferably, referring to fig. 2, fig. 5 and fig. 7, in the embodiment, the pressurization device 1 further includes an elbow 17 and a connecting pipe, and the air outlet is communicated with the pressurization channel 13 through the elbow 17 and the connecting pipe.

The elbow 17 is arranged so that the connecting pipe can be conveniently turned relative to the air outlet, and the connecting pipe can be reasonably distributed in the range hood.

The connecting pipe is arranged so as to facilitate the communication between the supercharging component 11 close to the smoke inlet and the elbow 17 close to the air outlet.

Preferably, referring to fig. 2 and 5, the range hood further includes a body 2 with a fan 21 disposed therein, and the smoke collecting hood 3 is disposed below the body 2; the connecting pipe comprises a first pipe section 181 penetrating through the machine body 2 and a second pipe section 182 arranged in the smoke collection cavity 31, the air outlet is communicated with the first pipe section 181, and the pressurizing channel 13 is communicated with the second pipe section 182; the first pipe section 181 is a rectangular pipe, and along the extending direction perpendicular to the first pipe section 181, a smaller outer wall surface of the first pipe section 181 projects on the blower 21.

In this arrangement, the first pipe section 181 penetrates the body 2, and the second pipe section 182 is disposed in the smoke collecting chamber 31 so as to facilitate the communication between the pressure increasing member 11 near the smoke inlet and the elbow 17 near the air outlet.

The first pipe section 181 is a rectangular pipe, and along the extending direction perpendicular to the first pipe section 181, the smaller outer wall surface of the first pipe section 181 projects on the fan 21, so as to reduce the projection of the first pipe section 181 on the fan 21, and reduce the influence of the first pipe section 181 on the air intake and exhaust of the fan 21.

Alternatively, the second tube segment 182 is a rectangular cross-sectional tube, a square cross-sectional tube, or a circular cross-sectional tube. Preferably, the second pipe section 182 is a pipe with a circular cross section, that is, the second pipe section 182 is a circular pipe, so that the collision of the air flow in the second pipe section 182 is reduced, thereby reducing noise.

Preferably, referring to fig. 2 and 5, in the present embodiment, two smoke inlets of the smoke collecting cover 3 are provided, two supercharging members 11 are provided, and the two supercharging members 11 are respectively arranged corresponding to the two smoke inlets; the supercharging device 1 further comprises a three-way pipe 19, and the three parts of the connecting pipe and the supercharging channels 13 of the two supercharging components 11 are communicated through the three-way pipe 19.

Due to the arrangement, the pressurizing parts 11 are arranged at the positions close to the two smoke inlets, so that the smoke suction effect of the range hood is further improved.

Preferably, please refer to fig. 1, fig. 5 and fig. 6, in this embodiment, the airflow channel is communicated with the air outlet of the range hood through the air outlet housing 5. It should be noted that the air outlet cover 5, i.e. the check valve, discharges the air discharged from the fan 21 after entering the air outlet channel 51.

Preferably, referring to fig. 6, in the present embodiment, the air outlet housing 5 is provided with an air outlet channel 51 communicated with the air outlet of the range hood, and the extending direction of the air outlet channel 51 is consistent with the air outlet direction of the air outlet; the air outlet cover 5 is provided with a first port 52 and a communication channel, the communication channel is communicated with the air outlet channel 51 through the first port 52, and the air flow channel is communicated with the communication channel.

Wherein, the extending direction of the air outlet channel 51 is consistent with the air outlet direction of the outlet, so that the air discharged by the fan 21 enters the air outlet channel 51, and the noise generated by the change of the air flowing direction is prevented.

After the air enters the air outlet channel 51, a part of the air can enter the airflow channel through the first port 52 and then enter the supercharging device 1, so as to be sprayed out from the nozzle 12.

Due to the arrangement, the air exhausted by the fan 21 is conveyed to the airflow channel and is used as the air source for injecting the jet flow of the supercharging device 1, and an additional power source or the air source is not needed, so that the structure of the range hood is simplified, and the cost of the range hood is reduced.

Preferably, referring to fig. 6, in the present embodiment, the first port 52 is perpendicular to the extending direction of the air outlet channel 51. With this arrangement, the influence of the first port 52 on the normal discharge of the air flow in the outlet passage 51 is reduced.

It should be noted that, during the process of exhausting the air flow through the air outlet channel 51, a part of the air flow can enter the air flow channel through the first port 52 to provide an air source for the pressure increasing member 11.

Preferably, referring to fig. 7, 8 and 9, in the present embodiment, the communicating channel includes a first channel 53 communicating with the first port 52, the wind outlet cover 5 further has a second port 54, and the first channel 53 communicates with the airflow channel through the second port 54; wherein the extending direction of the first passage 53 is changed reciprocally from the first port 52 to the second port 54.

For example, the first passage 53 has a rectangular spiral shape or a circular spiral shape along the extending direction of the first passage 53.

With the arrangement, the flowing direction of the air flow can be changed for multiple times in the process that the air flow flows from the first opening 52 to the second opening 54, so that the air flow can collide with the air outlet cover 5, the air flow can be conveniently separated from impurities such as oil stains and smoke, the impurities in the air flow are reduced, the probability that the impurities in the air flow block a pressurizing channel is reduced, and the service life of the pressurizing device 1 is prolonged.

Preferably, referring to fig. 6 and 7, in the present embodiment, the first port 52 is provided in plural, and the plural first ports 52 are arranged at intervals along the circumferential direction of the air outlet channel 51; the first passages 53 and the second ports 54 are provided in plural numbers, and the plural first passages 53, the plural second ports 54, and the plural first ports 52 are respectively in one-to-one correspondence.

Due to the arrangement, the entering area of the airflow of the air outlet channel 51 entering the booster 11 is increased, so that the airflow of the air outlet channel 51 can enter the booster 11 quickly and efficiently.

Preferably, the plurality of first ports 52 are uniformly arranged in the circumferential direction of the outlet air passage 51.

Preferably, referring to fig. 7 and 8, in the present embodiment, the airflow channel further includes a second channel 55, the plurality of second ports 54 are all communicated with the second channel 55, and the second channel 55 is communicated with the supercharging device 1 through a third port 56.

With this arrangement, the air flows of the plurality of first passages 53 are all merged with the second passage 55 through the second port 54 and uniformly enter the pressure booster device 1 from the third port 56, so that the air flow and the pressure are supplied to the pressure booster device 1 collectively.

Example two

The second embodiment provides a range hood, the range hood comprises the supercharging device 1 of the first embodiment, technical features of the supercharging device 1 disclosed in the first embodiment are also applicable to the first embodiment, and repeated description of the technical features of the supercharging device 1 disclosed in the first embodiment is omitted. The following describes embodiments of the range hood in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the range hood provided in this embodiment includes a body 2 with a fan 21 therein, a smoke collecting hood 3 connected below the body 2, and a supercharging device 1; the smoke collecting cover 3 is provided with a smoke collecting cavity 31 and a smoke inlet communicated with the smoke collecting cavity 31, the machine body 2 is provided with an air outlet, and air can be discharged from the air outlet after passing through the smoke inlet and the smoke collecting cavity 31; the airflow channel of the supercharging device 1 is communicated with the air outlet.

When the range hood is used, under the action of the fan 21, the negative pressure generated by the fan 21 acts on the smoke inlet, so that the air mixed with the oil smoke in the cooking environment is discharged from the air outlet after passing through the smoke inlet and the smoke collecting cavity 31, and the effect of discharging the oil smoke generated by cooking to purify the kitchen environment is achieved.

In conclusion, the fan 21 of the range hood can generate negative pressure and the supercharging device 1 further enables the negative pressure to be formed near the nozzle 12, namely, the negative pressure effects are superposed through the dual effects of the fan 21 and the supercharging device 1, the oil smoke absorption effect of the range hood is improved, the oil smoke is prevented from escaping to a certain extent, and the kitchen environment and the health of users are guaranteed.

The range hood of the present embodiment has the advantages of the supercharging device 1 of the first embodiment, which have been described in detail in the first embodiment, and will not be repeated here.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (18)

1. A supercharging arrangement, characterized by comprising a supercharger (11) and an airflow path;

an air outlet cover (5) is arranged at an air outlet of the range hood, and an air outlet channel (51) communicated with the air outlet is arranged on the air outlet cover (5);

pressure boost piece (11) are provided with spout (12), spout (12) pass through airflow channel with air-out passageway (51) intercommunication, just spout (12) can spout the air current into in the collection petticoat pipe (3) of lampblack absorber.

2. Supercharging device according to claim 1, characterized in that the outlet air channel (51) extends in the same direction as the outlet air of the outlet;

the air outlet cover (5) is provided with a first port (52) and a communication channel, the communication channel is communicated with the air outlet channel (51) through the first port (52), and the air flow channel is communicated with the communication channel.

3. Supercharging device according to claim 2, characterized in that the first port (52) extends perpendicularly to the direction of extension of the outlet channel (51).

4. Supercharging device according to claim 2, characterized in that the communication channel comprises a first channel (53) which communicates with the first opening (52), and a second opening (54) opens in the housing (5), and the first channel (53) communicates with the air flow channel via the second opening (54);

wherein the extending direction of the first passage (53) is changed reciprocally from the first port (52) to the second port (54).

5. Supercharging device according to claim 4, characterized in that the first port (52) is provided in plurality, and a plurality of the first ports (52) are provided at intervals in the circumferential direction of the outlet channel (51);

the first channel (53) and the second port (54) are provided in plurality, and the first channel (53), the second port (54) and the first port (52) are respectively in one-to-one correspondence.

6. The supercharging arrangement according to claim 5, characterized in that the communication passage further comprises a second passage (55), a plurality of the second ports (54) each communicate with the second passage (55), and the second passage (55) communicates with the gas flow passage through a third port (56).

7. Supercharging device according to any of claims 1 to 6, characterized in that the fume collecting hood (3) is provided with a fume collecting chamber (31) and a fume inlet communicating with the fume collecting chamber (31), the jet (12) being capable of injecting an air flow into the fume collecting chamber (31);

the pressurizing piece (11) is arranged close to the smoke inlet, and the nozzle (12) is positioned on one side of the smoke inlet, which is far away from the smoke collection cavity (31).

8. Supercharging device according to claim 7, characterized in that a filter screen (4) is arranged at the smoke inlet, a plurality of filter holes (41) are arranged on the filter screen (4), and the airflow ejected from the nozzle (12) can pass through the filter holes (41) and then enter the smoke collection chamber (31).

9. Supercharging device according to claim 7, characterized in that a supercharging channel (13) is provided in the supercharging member (11) in communication with the gas flow channel, the nozzle (12) being in communication with the supercharging channel (13);

the spray ports (12) are arranged in a plurality, and the spray ports (12) are spaced along the extension direction of the pressurizing channel (13); alternatively, the nozzle (12) is a long hole extending in the extending direction of the pressurizing passage (13).

10. Supercharging device according to claim 9, characterized in that, in the direction of extension of the supercharging channel (13), the supercharging member (11) is an annular tube extending in the circumferential direction of the smoke inlet, and the nozzle orifice (12) is arranged close to one side of the center line of the annular tube.

11. Supercharging device according to claim 9, characterized in that the supercharging element (11) comprises a body having a first end and a second end (14) which are arranged opposite to each other, the second end (14) being bent in a direction towards the first end so as to form the supercharging channel (13) in the body, the first end and the second end (14) being arranged alternately with respect to each other so as to form the nozzle (12), and the first end being arranged close to the supercharging channel (13) with respect to the second end (14).

12. Supercharging device according to claim 11, characterized in that the first end is provided with a guide (15) which can guide the air flow in the supercharging channel (13) to the nozzle (12).

13. Supercharging device according to claim 12, characterized in that a drainage channel (16) communicating with the nozzle (12) is formed between the side of the body close to the second end (14) and the guide (15);

one surface of the guiding part (15) close to the drainage channel (16) is a smooth transition surface, and/or one surface of the body close to the drainage channel (16) is a smooth transition surface.

14. Supercharging device according to claim 13, characterized in that, in the direction of extension of the flow-off channel (16), from the supercharging channel (13) to the nozzle (12), the flow-off channel (16) tapers in cross section perpendicular to its direction of extension.

15. Supercharging device according to claim 9, characterized in that the supercharging device (1) further comprises an elbow (17) and a connecting pipe, the outlet opening being connected to the supercharging channel (13) via the elbow (17) and the connecting pipe.

16. Supercharging device according to claim 15, characterized in that the range hood further comprises a body (2) in which a fan (21) is disposed, the fume collecting hood (3) being disposed below the body (2);

the connecting pipe comprises a first pipe section (181) penetrating through the machine body (2) and a second pipe section (182) arranged in the smoke collection cavity (31), the air outlet is communicated with the first pipe section (181), and the pressurizing channel (13) is communicated with the second pipe section (182);

the first pipe section (181) is a rectangular pipe, and along the extending direction perpendicular to the first pipe section (181), the smaller outer wall surface of the first pipe section (181) projects on the fan (21).

17. Supercharging device according to claim 16, characterized in that the fume-collecting hood (3) is provided with two fume inlets, the supercharging components (11) are provided with two, and two supercharging components (11) are provided respectively corresponding to the two fume inlets;

the supercharging device (1) further comprises a three-way pipe (19), and the connecting pipe and the supercharging channels (13) of the two supercharging parts (11) are communicated through the three-way pipe (19).

18. A range hood, characterized by comprising a body (2) provided with a fan (21) therein, a fume collecting hood (3) connected below the body (2), and a supercharging device (1) according to any one of claims 1 to 17;

the smoke collecting cover (3) is provided with a smoke collecting cavity (31) and a smoke inlet communicated with the smoke collecting cavity (31), the machine body (2) is provided with an air outlet, and air can pass through the smoke inlet and the smoke collecting cavity (31) and then is discharged from the air outlet;

and the airflow channel of the supercharging device (1) is communicated with the air outlet.

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