CN111895472A

CN111895472A - Integrated air conditioner type range hood

Info

Publication number: CN111895472A
Application number: CN202010917319.6A
Authority: CN
Inventors: 艾穗江; 罗权龙; 冼道昌; 刘兵
Original assignee: Guangdong Macro Gas Appliance Co Ltd; Guangdong Wanjiale Kitchen Technology Co Ltd
Current assignee: Guangdong Macro Gas Appliance Co Ltd; Guangdong Wanjiale Kitchen Technology Co Ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-11-06

Abstract

The invention discloses an integrated air-conditioning type range hood, which comprises a range hood main body and a refrigeration assembly, wherein the range hood main body is provided with a smoke collection cavity, a cold air channel and a hot air channel, the refrigeration assembly comprises an air conditioner shell, a compressor, a first heat exchanger and a second heat exchanger, the air conditioner shell is fixed on the top surface of the range hood main body, the interior of the air conditioner shell is provided with a hot air cavity, a cold air cavity and an air inlet cavity which are mutually communicated, the air inlet cavity is provided with an air inlet, the hot air cavity is communicated with the smoke collection cavity through the hot air channel, the cold air cavity is communicated with the exterior of the range hood main body through the cold air channel, the first heat exchanger is arranged in the hot air cavity, the second heat exchanger is arranged in the cold air cavity, the hot air cavity and the cold air cavity in the air conditioner shell, thereby greatly improving the integration level of the cigarette machine and reducing the volume of the cigarette machine.

Description

Integrated air conditioner type range hood

Technical Field

The invention relates to the field of kitchen appliances, in particular to an integrated air-conditioning type range hood.

Background

Along with the improvement of living standard of materials, people have higher and higher requirements on kitchen environment, people need to use stoves and the like in the cooking process, a large amount of heat can be generated in a kitchen, the temperature of the whole space is increased, and the comfort of the environment is reduced. Most homes use temporary fans to solve this problem, however, this method is not only inconvenient, but also occupies kitchen area. To this problem, through add the refrigeration module on smoke ventilator among the prior art, realize carrying cold wind to the kitchen, improve the purpose of environmental comfort.

At present, most of the proposals adopted by the range hood with the refrigeration function are semiconductor chip refrigeration, such as patent numbers CN105222 105222193B, CN 105987464 a, etc., but the semiconductor chip has low refrigeration efficiency and small refrigeration power, and is difficult to achieve good refrigeration effect. Therefore, a compressor is adopted in part of schemes for refrigerating, such as patent numbers CN 111288545A, CN 205402845U and the like, but the scheme causes the whole volume of the cigarette machine to be overlarge, occupies more kitchen space, and causes the whole decoration of the kitchen to be uncoordinated; and most of range hoods with refrigeration function have air inlets arranged on the left and right side surfaces of the range hood, such as patent numbers CN 111288525A. This will make the cigarette machine installation requirement higher, and kitchen fitment must reserve sufficient space for the cigarette machine left and right sides in order to guarantee that the cigarette machine left and right sides admits air unobstructed, can't accomplish cupboard integration.

Disclosure of Invention

The invention aims to provide an integrated air-conditioning type range hood, which solves one or more technical problems in the prior art and at least provides a beneficial choice or creation condition.

The technical scheme adopted for solving the technical problems is as follows:

an integrated air-conditioning type range hood comprises a range hood body and a refrigerating assembly, wherein the range hood body is provided with a smoke collection cavity, a cold air channel and a hot air channel, the cold air channel is provided with a first cold air inlet and a first cold air outlet, the hot air channel is provided with a first hot air inlet and a first hot air outlet, the first cold air inlet and the first hot air inlet are arranged on the top surface of the range hood body, the first hot air outlet is communicated with the smoke collection cavity, and the first cold air outlet is communicated with the outside of the range hood body; the refrigerating assembly comprises an air conditioner shell, a compressor, a first heat exchanger and a second heat exchanger, a hot air cavity, a cold air cavity and an air inlet cavity are arranged in the air conditioner shell, the air inlet cavity is communicated with the hot air cavity and the cold air cavity, the air inlet cavity is provided with an air inlet communicated with the outside of the air conditioner shell, the air conditioner shell is fixed on the top surface of the cigarette machine main body, the hot air cavity is provided with a second hot air outlet butted with the first hot air inlet, the cold air cavity is provided with a second cold air outlet butted with the first cold air inlet, the first heat exchanger is installed in the hot air cavity, the second heat exchanger is installed in the cold air cavity, and the compressor, the first heat exchanger and the second heat exchanger are connected through refrigerant pipelines.

The invention has the beneficial effects that: when the air conditioner is used, under the operation of the compressor, air entering from the air inlet and passing through the cold air cavity exchanges heat with the second heat exchanger, and cooled cold air passes through the second cold air outlet, the first hot air inlet and the cold air channel in sequence and is discharged from the first cold air outlet, so that the purpose of cooling the air conditioner is achieved; air entering from the air inlet and passing through the hot air cavity exchanges heat with the second heat exchanger, heated hot air sequentially passes through the second hot air outlet, the first hot air inlet and the hot air channel and then enters the smoke collection cavity, and the hot air and smoke in the smoke collection cavity are discharged outdoors to achieve the purpose of heat dissipation; compared with the prior art, the refrigeration assembly adopts the compressor for refrigeration, the refrigeration efficiency is improved, meanwhile, because the air conditioner shell is fixed on the top surface of the smoke machine main body, the hot air cavity and the cold air cavity in the air conditioner shell share one air inlet (namely, hot air and cold air share the air inlet), and hot air exhausted by the refrigeration assembly enters the smoke collection cavity through the hot air channel, the heat dissipation is realized while the smoke exhaust ventilator discharges smoke, the integration level of the smoke machine is greatly improved, and the volume of the smoke machine is reduced.

As a further improvement of the above technical solution, an installation cavity is further arranged in the air conditioner casing, the air inlet cavity is connected with the hot air cavity through the installation cavity, and the compressor is installed in the installation cavity.

The compressor is arranged in the installation cavity, and the air inlet cavity in the scheme is connected with the hot air cavity through the installation cavity, so that air before entering the hot air cavity passes through the installation cavity, the air can cool the outside of the compressor, and the phenomenon of overheating of the compressor in the operation process can be avoided; meanwhile, the hidden installation of the compressor can be realized, so that the appearance of the range hood is cleaner and tidier, and the phenomenon that the compressor is exposed to cause oil accumulation outside and short circuit is caused is avoided.

It should be noted that: the temperature of the air after heat exchange with the compressor is far lower than the temperature of the first heat exchanger during working, and then the air entering the hot air cavity further exchanges heat with the first heat exchanger.

As a further improvement of the above technical solution, the air inlet is disposed at the front side of the upper portion of the air conditioner casing, and an air inlet separation net is disposed at an inlet of the air inlet.

The distance between the air inlet and the first cold air outlet and the distance between the air inlet and the oil smoke can be prolonged, and the oil smoke gas is prevented from being disturbed or sucked; the air inlet separation net can play a certain role in filtering air entering from the air inlet, and prevents foreign matters from entering the refrigeration assembly to cause the blockage of a channel.

As a further improvement of the technical scheme, the refrigeration assembly further comprises a decorative coaming, wherein the decorative coaming is arranged around the periphery of the refrigeration assembly, and a notch for air inlet air inflow is reserved on the decorative coaming.

The decoration coaming can wrap the periphery of the refrigeration assembly, so that the refrigeration assembly is integrated with the cigarette machine main body, the appearance is improved, and the effect of blocking oil smoke is achieved.

As a further improvement of the technical proposal, an air filter element is arranged in the air inlet. The air filter element can completely filter air entering the refrigeration assembly, can filter oil smoke in the air, and improves the heat exchange effect of the first heat exchanger and the second heat exchanger.

As a further improvement of the technical scheme, an air cooler is arranged on the cold air channel, and a heat radiation fan is arranged on the hot air channel.

Under the effect of air-cooler and cooling fan, can improve the power that cold wind blew off to and improve hot-blast exhaust power, improve the refrigeration efficiency of refrigeration subassembly. Meanwhile, the integral integration level of the cigarette machine can be further improved, and the integral size of the cigarette machine is reduced.

As a further improvement of the technical scheme, the number of the first cold air outlets is provided with a plurality of the first cold air outlets which are arranged on the front side of the cigarette machine main body at left and right intervals.

The cooled cold air is blown out from the first cold air outlet, a plurality of first cold air outlets can be arranged according to different requirements, and meanwhile, the first cold air outlet is arranged on the front side of the range hood body and can blow air towards the front side, so that people can directly feel cool in the process of cooking; the cabinet integrated design is also convenient for a user to install the smoke machine, only the first cold air outlet in front needs to be exposed, and the smoke machine can be attached to the cabinet wall tightly at the left and right sides, so that the kitchen is more attractive.

As a further improvement of the above technical scheme, the first cold air outlet is provided with a rotatable air guide grid blade, and the number of the air guide grid blades is at least one.

When the cold air blower is used, the blowing direction can be adjusted according to different requirements of people, and particularly, the angle of the air guide grid leaf is poked, so that cold air can be blown out from the first cold air outlet in the set direction.

As a further improvement of the technical scheme, the cigarette machine main body further comprises an air outlet shell, the air outlet shell is installed in the cigarette machine main body, a part or all of the cold air channel is arranged in the air outlet shell, the first cold air outlet is arranged on the air outlet shell, and a condensed water outlet is formed in the bottom of the air outlet shell.

In the refrigerating process of the refrigerating assembly, as the condensed water can be generated in the cold air cavity, the condensed water can flow into the air outlet shell along the cold air channel and is led out from the condensed water outlet, and the phenomenon of water dripping at the first cold air outlet is avoided.

Wherein can have the multiple to cold wind passageway and hot-blast main part form, in some other schemes, the cold wind passageway can be the tubular, the panel beating forms through the punching press, also can with cigarette machine main part integrated into one piece, the mode of installation also can have the multiple, cold wind passageway and hot-blast main part can set up on the surface of cigarette machine main part, also can set up the inside in cigarette machine main part, and cold wind passageway and hot-blast main part in this scheme all set up in the inside of cigarette machine main part, this can make air-cooler and cooling blower hide to install in the cigarette machine main part, make the outside of cigarette machine main part cleaner and tidier.

As a further improvement of the technical scheme, the cigarette machine main body further comprises an oil smoke fan, the smoke collection cavity is provided with a smoke suction port and a smoke exhaust port, the oil smoke fan is arranged in the smoke collection cavity between the smoke suction port and the smoke exhaust port, and the first hot air outlet is arranged on the negative pressure side of the oil smoke fan.

The oil smoke fan is mainly used for absorbing oil smoke, and meanwhile, the negative pressure generated in the oil smoke absorbing process can discharge the extracted hot air out of a room through the flue.

Drawings

The invention is further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural diagram of an integrated air-conditioning range hood according to an embodiment of the present invention;

FIG. 2 is an exploded view of an integrated air conditioning range hood in accordance with an embodiment of the present invention;

FIG. 3 is a front view of an integrated air conditioning range hood in accordance with an embodiment of the present invention;

figure 4 is a top plan view of one embodiment of a cigarette maker body provided by the present invention;

FIG. 5 is a schematic view of an embodiment of an air conditioner casing according to the present invention;

FIG. 6 is a bottom view of an embodiment of the air conditioner housing of the present invention;

fig. 7 is a schematic structural diagram of an embodiment of the air outlet case provided in the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 7, the integrated air-conditioning range hood of the present invention is made as follows:

the integrated air-conditioning range hood in the embodiment comprises a range hood main body 100 and a refrigerating assembly 200.

A smoke collection cavity 110, a cold air channel and a hot air channel are arranged in the cigarette machine main body 100, the cold air channel is provided with a first cold air inlet 120 and a first cold air outlet 130, the hot air channel is provided with a first hot air inlet 140 and a first hot air outlet 150, as shown in fig. 4, the first cold air inlet 120 and the first hot air inlet 140 are arranged on the top surface of the cigarette machine main body 100, the first hot air outlet 150 is communicated with the smoke collection cavity 110, the first cold air outlet 130 is communicated with the outside of the cigarette machine main body 100, the first cold air outlet 130 is arranged on the front side of the cigarette machine main body 100, the first cold air outlet 130 in the embodiment is provided with two first cold air outlets 130, the two first cold air outlets 130 are arranged at intervals from left to right, the smoke collection cavity 110 is provided with a smoke suction port 111 and a smoke exhaust port 112, and a smoke exhaust fan 600 is arranged in the smoke collection cavity 110, the first hot air outlet 150 is disposed on the negative pressure side of the soot blower 600.

As shown in fig. 5, the refrigeration assembly 200 includes an air conditioner casing 210, a compressor 220, a first heat exchanger 230, and a second heat exchanger 240, a hot air cavity 211, a cold air cavity 212, and an air inlet cavity 213 are disposed inside the air conditioner casing 210, the air inlet cavity 213 is simultaneously communicated with the hot air cavity 211 and the cold air cavity 212, the air inlet cavity 213 is provided with an air inlet 217 communicated with the outside of the air conditioner casing 210, the air inlet 217 is disposed at the front side of the upper portion of the air conditioner casing 210, and an air inlet partition 218 is disposed at the inlet of the air inlet 217, which can extend the distance between the air inlet 217 and the first cold air outlet 130 and the cooking fumes, and prevent the dirty cooking fumes from being disturbed flow or sucked; the air inlet separation net 218 can play a certain role in filtering air entering from the air inlet 217, so that the phenomenon that foreign matters enter the refrigeration assembly 200 to cause the blockage of a channel is avoided; the air conditioner case 210 is fixed to the top surface of the cigarette maker main body 100, as shown in fig. 6, the hot air cavity 211 is provided with a second hot air outlet 214 butted with the first hot air inlet 140, and the cold air cavity 212 is provided with a second cold air outlet 215 butted with the first cold air inlet 120, as shown in fig. 5, the first heat exchanger 230 is installed in the hot air cavity 211, and the second heat exchanger 240 is installed in the cold air cavity 212.

The compressor 220, the first heat exchanger 230 and the second heat exchanger 240 in this embodiment are connected by a refrigerant pipeline, wherein the first heat exchanger 230 transfers heat to the air passing through the hot air cavity 211, and the second heat exchanger 240 cools the air passing through the cold air cavity 212, which is a prior art of an air conditioner and will not be described herein.

Meanwhile, as shown in fig. 1 and 2, an air cooler 300 is installed on the cold air channel, and a heat dissipation fan 400 is installed on the hot air channel.

When the air conditioner is in use, under the operation of the air cooler 300, the heat dissipation fan 400, the oil smoke fan 600 and the compressor 220, air entering from the air inlet 217 and passing through the cold air cavity 212 exchanges heat with the second heat exchanger 240, and cooled cold air passes through the second cold air outlet 215, the first hot air inlet 140 and the cold air channel in sequence and is discharged from the first cold air outlet 130, so that the purpose of air conditioning and cooling is achieved; the air entering from the air inlet 217 and passing through the hot air cavity 211 exchanges heat with the second heat exchanger 240, the heated hot air passes through the second hot air outlet 214, the first hot air inlet 140 and the hot air channel in sequence and then enters the smoke collection cavity 110, and the hot air and the smoke in the smoke collection cavity 110 are discharged out of the room together, so that the heat dissipation purpose is achieved.

The refrigeration assembly 200 of this embodiment adopts the compressor 220 refrigeration, can improve refrigeration efficiency height, simultaneously because the air conditioner casing 210 is fixed in the top surface of cigarette machine main part 100, the hot-blast cavity 211 and the cold wind cavity 212 in the air conditioner casing 210 share an air intake be hot-blast and cold wind share air inlet 217 together promptly, and the hot-blast that refrigeration assembly 200 discharged passes through hot air channel and gets into in the smoke collecting cavity 110, also realize the heat dissipation when range hood discharges fume, and then improved the integrated level of cigarette machine greatly, reduce the cigarette machine volume.

Further, in order to avoid the overheating phenomenon of the compressor 220 during the operation process and the short circuit phenomenon caused by the oil accumulation outside the compressor 220 due to the exposure of the compressor 220, an installation cavity 216 is further arranged in the air conditioner casing 210, the air inlet cavity 213 is connected with the hot air cavity 211 through the installation cavity 216, the compressor 220 is installed in the installation cavity 216, the compressor 220 generates certain heat during the operation process, once the overheating phenomenon occurs due to poor heat dissipation, the performance of the compressor 220 is greatly affected, the compressor 220 is arranged in the installation cavity 216, the air inlet cavity 213 is connected with the hot air cavity 211 through the installation cavity 216, so that the air before entering the hot air cavity 211 firstly passes through the installation cavity 216, the air can cool the outside of the compressor 220, and the overheating phenomenon of the compressor 220 during the operation process can be avoided, meanwhile, the attractiveness of the range hood is improved. Since the temperature of the air after heat exchange with the compressor 220 is much lower than the temperature of the first heat exchanger 230 during operation, the air entering the hot air cavity 211 can further exchange heat with the first heat exchanger 230.

Further, an air filter (not shown) is installed inside the air inlet 217. The air filter element can completely filter the air entering the refrigeration assembly 200, can filter oil smoke in the air, and improves the heat exchange effect of the first heat exchanger 230 and the second heat exchanger 240.

In order to further improve the aesthetic property of the appearance, the refrigeration assembly 200 further comprises a decorative coaming 250, the decorative coaming 250 surrounds the periphery of the refrigeration assembly 200, a notch for air inlet 217 is reserved on the decorative coaming 250, and the decorative coaming 250 can wrap the periphery of the refrigeration assembly 200, so that the refrigeration assembly 200 is integrated with the cigarette machine main body 100, the aesthetic property is improved, and the effect of blocking oil smoke is achieved.

Further, as shown in fig. 1 and 3, the first cold-air outlet 130 is provided with at least one rotatable air-guiding grid blade 131, and the number of the air-guiding grid blades 131 is at least one, so that when the air-guiding grid blade is used, the blowing direction can be adjusted according to different requirements of people, specifically, the angle of the air-guiding grid blade 131 is shifted, so that cold air can be blown out from the first cold-air outlet 130 in a set direction. As shown in fig. 7, at the same time, the cigarette maker main body 100 further includes an air outlet shell 500, the air outlet shell 500 is installed in the cigarette maker main body 100, a part or all of the cold air channel is disposed in the air outlet shell 500, the first cold air outlet 130 is disposed on the air outlet shell 500, a condensed water outlet 510 is disposed at the bottom of the air outlet shell 500, and in the refrigerating process of the refrigeration assembly 200, since condensed water is generated in the cold air cavity 212, at this time, the condensed water can flow into the air outlet shell 500 along the cold air channel and is led out from the condensed water outlet 510, so that a phenomenon that water drops at the first cold air outlet 130 is avoided.

In some embodiments, there may be a plurality of to cold air channel and hot air channel form, in some other schemes, the cold air channel may be the tubular, the panel beating is formed through the punching press, also can with cigarette machine main part 100 integrated into one piece, the mode of installation also may have a plurality ofly, cold air channel and hot air channel can set up on the surface of cigarette machine main part 100, also can set up in the inside of cigarette machine main part 100, and cold air channel and hot air channel in this embodiment all set up in the inside of cigarette machine main part 100, this can make air-cooler 300 and cooling fan 400 hide and install in cigarette machine main part 100, make the outside of cigarette machine main part 100 neater.

In some embodiments, the installation positions of the air cooler 300 and the heat dissipation fan 400 may be various, and the air cooler 300 may be installed in the cold air cavity 212 and connected to the second cold air outlet 215; the heat dissipation fan 400 may be installed in the hot air cavity 211 and connected to the second hot air outlet 214; alternatively, the air cooler 300 and the heat dissipation fan 400 are integrated into one fan, which is installed in the air intake cavity 213.

There are various installation positions for the smoke ventilator 600, which can be installed outside the smoke ventilator main body 100 or on the smoke exhaust port 112.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.

Claims

1. An integrated air-conditioning type range hood is characterized in that: it includes:

the cigarette machine main body (100) is provided with a cigarette collecting cavity (110), a cold air channel and a hot air channel, the cold air channel is provided with a first cold air inlet (120) and a first cold air outlet (130), the hot air channel is provided with a first hot air inlet (140) and a first hot air outlet (150), the first cold air inlet (120) and the first hot air inlet (140) are arranged on the top surface of the cigarette machine main body (100), the first hot air outlet (150) is communicated with the cigarette collecting cavity (110), and the first cold air outlet (130) is communicated with the outside of the cigarette machine main body (100);

the refrigerating assembly (200) comprises an air conditioner shell (210), a compressor (220), a first heat exchanger (230) and a second heat exchanger (240), wherein a hot air cavity (211), a cold air cavity (212) and an air inlet cavity (213) are arranged in the air conditioner shell (210), the air inlet cavity (213) is simultaneously communicated with the hot air cavity (211) and the cold air cavity (212), the air inlet cavity (213) is provided with an air inlet (217) communicated with the outside of the air conditioner shell (210), the air conditioner shell (210) is fixed on the top surface of a range hood main body (100), the hot air cavity (211) is provided with a second hot air outlet (214) butted with the first hot air inlet (140), the cold air cavity (212) is provided with a second cold air outlet (215) butted with the first cold air inlet (120), and the first heat exchanger (230) is arranged in the hot air cavity (211), the second heat exchanger (240) is arranged in the cold air cavity (212), and the compressor (220), the first heat exchanger (230) and the second heat exchanger (240) are connected through a refrigerant pipeline.

2. An integrated air-conditioning type range hood according to claim 1, wherein:

an installation cavity (216) is further arranged in the air conditioner shell (210), the air inlet cavity (213) is connected with the hot air cavity (211) through the installation cavity (216), and the compressor (220) is installed in the installation cavity (216).

3. An integrated air-conditioning type range hood according to claim 1, wherein:

the air inlet (217) is arranged on the front side of the upper part of the air conditioner shell (210), and an air inlet separation net (218) is arranged at the inlet of the air inlet (217).

4. An integrated air-conditioning type range hood according to claim 3, wherein:

refrigeration subassembly (200) still include decorate bounding wall (250), decorate bounding wall (250) around set up in refrigeration subassembly (200) periphery, decorate bounding wall (250) reserve the breach that has for air inlet (217) admit air.

5. An integrated air-conditioning type range hood according to claim 3, wherein:

an air filter element is arranged in the air inlet (217).

6. An integrated air-conditioning type range hood according to claim 1, wherein:

an air cooler (300) is installed on the cold air channel, and a heat radiation fan (400) is installed on the hot air channel.

7. An integrated air-conditioning type range hood according to claim 1, wherein:

the number of the first cold air outlets (130) is provided with a plurality of, and the first cold air outlets (130) are arranged on the front side of the cigarette machine main body (100) at left and right intervals.

8. An integrated air-conditioning type range hood according to claim 1, wherein:

the first cold air outlet (130) is provided with rotatable wind guide grid blades (131), and the number of the wind guide grid blades (131) is at least one.

9. An integrated air-conditioning type range hood according to claim 1, wherein:

still include air-out shell (500), air-out shell (500) are installed in cigarette machine main part (100), some or all of cold wind passageway set up in air-out shell (500), first cold wind air outlet (130) set up on air-out shell (500) the bottom of air-out shell (500) is provided with comdenstion water discharge port (510).

10. An integrated air-conditioning type range hood according to claim 1, wherein:

still include oil smoke fan (600), collection smoke chamber (110) are provided with smoking mouth (111) and exhaust port (112), oil smoke fan (600) set up in collection smoke chamber (110) between smoking mouth (111) and exhaust port (112), first hot-blast air outlet (150) set up in the negative pressure side of oil smoke fan (600).