CN220793487U - Condenser and range hood using same - Google Patents

Abstract

The utility model discloses a condenser and a range hood using the same, wherein the condenser comprises fins, the condenser also comprises a water locking structure arranged on the side walls of the fins, and the side walls of the fins and the water locking structure jointly form a concave water storage tank capable of storing water. Compared with the prior art, the utility model has the advantages that: by arranging the water storage tank, part of condensed water can be stored in the water storage tank, the water storage tank is in contact with the fins, the retention time is long, the heat of the condenser is better radiated by utilizing the heat exchange characteristic of the condensed water, and the heat exchange efficiency of the condenser is improved, so that the refrigerating device has better refrigerating effect; in addition, the water locking structure also improves the evaporation capacity of the condensed water, and is beneficial to better realizing the drainage-free of the condensed water.

Description

Condenser and range hood using same

Technical Field

The utility model relates to an oil fume purifying device, in particular to a condenser and a range hood using the same.

Background

The kitchen is the main place that people cook, and the cooking experience is directly influenced by the kitchen air environment. In order to provide cold air for a kitchen in summer and warm air in winter, various air-conditioning type range hoods are invented, namely, an air-conditioning component and the range hood are integrated into a whole, and an air-conditioning air outlet is formed in a shell of the range hood. The air conditioner smoke machine can work in a plurality of different modes, and as long as the mode with the air conditioner is opened, cold air or hot air can be blown out from the air outlet of the air conditioner, and the air conditioner smoke machine can be directly blown to a cooker or can be blown into a kitchen, so that the cooking experience of the cooker is effectively improved.

The refrigerating and oil-fume sucking device disclosed in China patent application No. 201920460790.X comprises: the oil smoke absorbing system, the refrigerating system and the shell are arranged in the cavity, the refrigerating system is provided with a cold air channel and an exhaust channel, the oil smoke absorbing system is provided with a smoke discharging channel, the refrigerating system is connected with an air outlet device, and the cold air channel is communicated with the air outlet device.

The refrigerating range hood has the advantages that the condenser is arranged in the oil smoke channel, the condenser is radiated by utilizing the oil smoke air flow, the condenser is easy to be polluted for a long time, and the radiating efficiency of the condenser is reduced; in addition, the condensed water is not effectively utilized, and is usually directly discharged into an oil cup, the oil cup is easy to be full, and the cleaning frequency of the oil cup is high.

For this purpose, chinese patent application No. 202222533236.4 of the applicant discloses a refrigerating range hood, in which a condenser is disposed outside a range hood passage, a water box having condensed water condensed on the surface of an evaporator is received, and the condensed water is pumped to the condenser to dissipate heat. The following problems still remain: 1) When the condensed water flows through the surface of the condenser, the condensed water is not easy to lock on the surface of the condenser, so that the evaporation capacity is reduced, and the heat exchange effect of the condenser is further affected; 2) The refrigeration module can not independently operate, and needs to be started to work simultaneously with the range hood, so that the application scene of the refrigeration function is limited.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a condenser aiming at the defects existing in the prior art, so that condensed water stays on the surface of the condenser for a longer time, and the heat exchange efficiency of the condenser is improved.

The second technical problem to be solved by the utility model is to provide a range hood with the condenser aiming at the defects of the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a condenser comprising fins, characterized in that: the condenser also comprises a water locking structure arranged on the side wall of the fin, and the side wall of the fin and the water locking structure jointly form a concave water storage tank capable of storing water.

By arranging the water storage tank, part of condensed water (also can be other water or heat dissipation medium used for heat dissipation) is stored in the water storage tank, the water storage is in contact with the fins and has longer retention time, the heat dissipation of the condenser is better by utilizing the heat exchange characteristic of the condensed water, and the heat exchange efficiency of the condenser is improved, so that the refrigerating device has better refrigerating effect; in addition, the water locking structure also improves the evaporation capacity of the condensed water, and is beneficial to better realizing the drainage-free of the condensed water.

The utility model solves the second technical problem by adopting the technical proposal that: the utility model provides a range hood, includes range hood body and refrigerating plant, its characterized in that: the refrigeration device includes a condenser as described above.

Further, the refrigerating device further comprises a compressor, an evaporator and a condensed water treatment structure capable of using condensed water generated by the evaporator for heat dissipation of the condenser, so that the condenser can dissipate heat better.

Further, the condensed water treatment structure comprises a first water receiving disc arranged at the bottom of the evaporator and a second water receiving disc arranged below the first water receiving disc, the condenser is positioned below the second water receiving disc, and the second water receiving disc receives condensed water flowing down from the first water receiving disc and can be poured onto the condenser, so that heat dissipation is carried out on the condenser.

Further, the bottom of first water collector has been seted up and has been leaked the hole, the upper surface of second water collector is provided with the water conservancy diversion strip, the water conservancy diversion strip has two at least, and the one end of each water conservancy diversion strip corresponds the below of leaking the hole and the other end then extends to the condenser top to pour the comdenstion water on the condenser, accessible water conservancy diversion strip guide comdenstion water flows, need not to set up great or more holes that leak, can have great scope of drenching.

Further, the bottom of second water collector is provided with and atomizes the radiating atomizing device of condenser behind the partial condensate water that comes first water collector, through atomizing device with the water smoke that forms behind the condensate water atomizing, can dispel the heat to the condenser high efficiency.

Further, the condensed water treatment structure further comprises a third water receiving disc arranged below the second water receiving disc, the third water receiving disc is positioned below the condenser, and a concave water storage tank is formed in the third water receiving disc; the condensed water treatment structure also comprises a water pump for pumping water in the water storage tank into the second water receiving disc, so that the water which is not evaporated around the condenser can be collected again for recycling.

Further, the refrigerating device further comprises a box body, wherein the compressor, the condenser and the evaporator are arranged in the box body, and an air outlet and an air inlet for room temperature air to enter are formed in the box body;

the refrigerating device also comprises an air cooler which blows out the cold air around the evaporator after heat exchange from the air outlet. Therefore, cool air can be blown out into the indoor environment, so that the environment refrigerating effect is realized.

Further, in order to avoid that the sucked air has more impurities, a filter screen is arranged at the air inlet. The high-efficiency purified air is introduced to realize heat dissipation of the condenser, the service life of the condenser is prolonged, the cleanliness of cold air is guaranteed, and the air quality of a kitchen is further guaranteed.

Further, in order to improve the quality and comfort of the cold air, the air outlet is provided with a negative ion generator.

Further, the range hood body comprises a fan assembly, the refrigerating device further comprises a compressor and an evaporator, the compressor, the condenser and the evaporator are arranged in a box body, an air outlet and an air inlet for room temperature air to enter are formed in the box body, and the box body and the fan assembly are in fluid communication, so that hot air around the condenser is discharged through the fan assembly. Because the fan component of the range hood body usually adopts a centrifugal fan, the heat dissipation effect of the condenser is guaranteed due to the large air volume and air pressure of the fan component, and meanwhile, a special condenser heat dissipation fan in the traditional refrigeration air conditioner is omitted, so that the cost can be lower.

Further, the range hood is internally provided with a lampblack channel, and the range hood further comprises a three-way valve, wherein the three-way valve is arranged in the lampblack channel and can be in the following three states:

first state: the oil smoke channel is opened, and the fan assembly is disconnected from the box body;

second state: the oil smoke channel is opened, and the fan assembly is communicated with the box body;

third state: the oil smoke channel is closed and the fan assembly is communicated with the box body.

The range hood body further comprises an air inlet assembly and a connecting pipeline connected between the air inlet assembly and the fan assembly, the oil smoke channel is formed in the air inlet assembly, the connecting pipeline and the fan assembly, the three-way valve is arranged in the connecting pipeline, and the box body is arranged adjacent to the connecting pipeline. Therefore, the range hood body and the refrigerating device can work simultaneously or independently.

Further, in order to achieve the three working states, the three-way valve comprises a valve body and a valve plate, wherein the valve body comprises a first side wall and a second side wall which are oppositely arranged, the first side wall is close to the condenser, the second side wall is far away from the condenser, a valve hole is formed in the first side wall, a hole matched with the valve hole is formed in the side wall corresponding to the connecting pipeline, one end of the valve plate is arranged on the first side wall and can rotate relative to the first side wall, and the other end of the valve plate is a free end;

in the first state, the valve plate closes the valve hole;

in the second state, the valve plate rotates towards the second side wall by a certain angle;

in the third state, the angle of rotation of the valve plate towards the second side wall is larger than that of the second state, and the free end of the valve plate is abutted with the second side wall to close the oil smoke channel.

The range hood body comprises an air inlet assembly, a fan assembly and a connecting pipeline connected between the air inlet assembly and the fan assembly, wherein the fan assembly is used for being arranged on a suspended ceiling, and the refrigerating device is arranged on the front side of the connecting pipeline.

Compared with the prior art, the utility model has the advantages that:

1) By arranging the water storage tank, part of condensed water (also can be other water or heat dissipation medium used for heat dissipation) is stored in the water storage tank, the water storage is in contact with the fins, the retention time is long, the heat dissipation of the condenser is better by utilizing the heat exchange characteristic of the condensed water, the heat exchange efficiency of the condenser is improved, so that the refrigerating device has better refrigerating effect, in addition, the water locking structure also improves the evaporation capacity of the condensed water, and the water drainage free of the condensed water is better realized;

2) The efficient condensate water treatment system with cyclic pouring and atomizing effects that condensate water is free from draining, so that better user experience is brought;

3) Because the fan component of the range hood body usually adopts a centrifugal fan, the heat dissipation effect of the condenser is ensured due to the large air volume and wind pressure of the fan component, and meanwhile, a special condenser heat dissipation fan in the traditional refrigeration air conditioner is omitted, so the cost can be lower;

4) The design of the three-way valve ensures that the refrigerating device can work independently and can work simultaneously with the range hood body, improves the applicable scene of the refrigerating function, and a user can start the refrigerating function before or during cooking according to personal preference;

5) And due to the modularized design, the ceiling smoke machine is highly integrated, the front space of the air duct of the ceiling smoke machine is utilized, and the utilization rate of kitchen space is improved.

Drawings

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

fig. 2 is a sectional view of a range hood according to an embodiment of the present utility model;

fig. 3 is a schematic view (hidden box) of a refrigerating device of a range hood according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a refrigerating device and a three-way valve of a range hood according to an embodiment of the present utility model;

fig. 5 is a schematic view of a part of condensate water treatment structure of a refrigerating device of a range hood according to an embodiment of the present utility model;

fig. 6 is a partial schematic view of a part of condensate water treatment structure of a refrigerating apparatus of a range hood according to an embodiment of the present utility model;

fig. 7 is a sectional view showing a second state of the three-way valve of the range hood according to the embodiment of the present utility model;

fig. 8 is a sectional view showing a third state of a three-way valve of a range hood according to an embodiment of the present utility model;

fig. 9 is a schematic view of a condenser of a refrigerating apparatus of a range hood according to an embodiment of the present utility model;

fig. 10 is an enlarged schematic view of the portion i of fig. 9.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Referring to fig. 1 to 4, a range hood comprises a range hood body 1 and a refrigerating device 2, wherein a range hood channel 11 is formed in the range hood body 1. The refrigerating device 2 is provided outside the range hood body 1 and can be in fluid communication with the oil smoke channel 11.

In this embodiment, the range hood body 1 is a ceiling fan, and includes an air intake assembly 12, a fan assembly 13 disposed above a kitchen ceiling, and a connection pipe 14 connected between the air intake assembly 12 and the fan assembly 13, where the oil smoke channel 11 is formed in the air intake assembly 12, the connection pipe 14, and the fan assembly 13. The refrigerating device 2 is arranged at the front side of the connecting pipeline 14 of the range hood body 1, is integrated with the range hood body 1, can perfectly utilize the space in front of the connecting pipeline 14 in the kitchen hanging cabinet, and improves the space utilization rate of a kitchen.

The refrigerating apparatus 2 includes a compressor 21, a condenser 22, an evaporator 23, a cooling fan 24, and a casing 25, wherein the compressor 21, the condenser 22, the evaporator 23, and the cooling fan 24 are disposed in the casing 25, and a refrigerant circulation path is formed between the compressor 21, the condenser 22, and the evaporator 23, so that cooling is performed in the same manner as in the prior art. The box 25 is provided with an air inlet 251 and an air outlet 252, wherein the air inlet 251 is preferably arranged at the left side, the right side and the top of the box 25, indoor room temperature air can enter the box 25 through the air inlet 251, and the positions of the air inlet 251 correspond to the condenser 22 and the evaporator 23 respectively. In order to avoid that the sucked air has more impurities, a filter screen 253, preferably a HEPA filter screen, is arranged at the air inlet 251 to filter the air inlet, so that the air introduced by the refrigerating device 2 is clean air after being efficiently filtered, and the service life of the refrigerating device 2 is prolonged, and the air quality of a kitchen is guaranteed. The introduced clean air can be pumped and discharged by the fan assembly 13 of the range hood body 1 to radiate the heat of the condenser 22, and the fan assembly 13 of the range hood body 1 usually adopts a centrifugal fan, so that the heat radiation effect of the condenser 22 is ensured due to the large air quantity and wind pressure of the fan assembly. Meanwhile, a special condenser heat radiation fan in the traditional refrigeration air conditioner is omitted, so that the cost can be lower.

The air outlet 252 is preferably formed at the front side of the box 25 and may be close to the top, the air dispersing fan 24 is a centrifugal fan, the air inlet of which faces the evaporator 22, and the air outlet is communicated with the air outlet 252 of the box 25, so that cold air after heat exchange between the normal temperature air sucked from the air inlet 251 and the evaporator 22 can be blown into the kitchen indoor environment through the air outlet 252. The negative ion generator 26 can be arranged at the air outlet 252, so that negative ions generated by the negative ion generator 26 are blown out together with cold air, dedusting and deodorizing are realized, and healthy factor negative ions are added, so that clean and comfortable fresh air is brought.

Referring to fig. 3 to 6, in the present embodiment, the evaporator 23 is located above the condenser 22, and the refrigeration apparatus 2 further includes a condensate water treatment structure including a first water receiving tray 271 provided at the bottom of the evaporator 23, a second water receiving tray 272 provided below the first water receiving tray 271, and a third water receiving tray 273 provided below the second water receiving tray 272, preferably, the third water receiving tray 273 may be provided at the bottom inside the tank 25. The condensed water generated by the evaporator 23 flows onto the first water receiving tray 271 by gravity, and the water leakage hole 2711 is formed in the first water receiving tray 271, so that the water on the first water receiving tray 271 flows into the second water receiving tray 272 by gravity through the water leakage hole 2711.

The upper surface of second water collector 272 is provided with guide bar 274, and guide bar 274 has at least two, and the one end of each guide bar 274 corresponds to the below of leaking hole 2711, and the other end then extends to the rear side tip of second water collector 272, and each guide bar 274 is radial distribution, and condenser 22 is located the rear side tip below of second water collector 272, and the passageway flow direction condenser 22 that from this the partly comdenstion water that evaporator 23 produced between through adjacent guide bar 274 is direct to condenser 22 drenches the heat dissipation.

The bottom of second water collector 272 is provided with atomizer 275, is located the top of condenser 22, and partial condensate water flows to atomizer 275, atomizes the comdenstion water under atomizer 275's effect, further realizes the heat dissipation to condenser 22. The condensed water which is not evaporated completely around the condenser 22 will continue to flow to the third water receiving tray 273 at the bottom, and a concave water storage tank 2731 is formed in the third water receiving tray 273. The condensed water treatment structure further comprises a water pump 276, and the water pump 276 can pump water in the water storage tank 2731 into the second water receiving disc 272 and the atomization device 275 for heat dissipation of the condenser 22. The water in the second water receiving tray 272 is poured on the condenser 22 to radiate the heat of the condenser 22, and meanwhile, the atomized water mist is matched to realize the efficient heat radiation of the condenser 22. The water mist which completes heat exchange with the condenser 22 can be brought into a common flue by the fan assembly 13 of the range hood body 1, so that the condensate water of the refrigerating device 2 is free from draining.

Referring to fig. 9 and 10, the condenser 22 includes a fin 221 and a water locking structure 222 disposed on the fin 221, the water locking structure 222 may be disposed on a side surface of the fin 221 in a shape of a plate recessed downward, and a sidewall of the fin 221 and the water locking structure 222 together form a recessed water storage tank 223. Part of the condensed water can be stored in the water storage groove 223, the stored water is in contact with the fins 221, the retention time is long, and the heat exchange characteristic of the condensed water is utilized to better dissipate heat of the condenser 22. When the refrigerating device 2 stops working, the fan assembly 13 of the range hood body 1 continues to work for a certain time, and continuous air flow is utilized to radiate heat for the condenser 22 and dry condensed water in the condenser water locking structure 222 so as to ensure the drying of the whole system.

Referring again to fig. 3, a support bracket 28 may be provided within the housing 25 such that the compressor 21, condenser 22, and water pump 276 described above may be provided on the support bracket 28.

Referring to fig. 2, 7 and 8, the range hood further includes a three-way valve 3 disposed in the connection pipe 14, the three-way valve 3 includes a valve body 31 and a valve plate 32, the valve body 31 is a hollow cuboid, and the shape and size of the valve body are adapted to those of the connection pipe 14, and include a first side wall 311 and a second side wall 312 which are disposed opposite to each other. In the present embodiment, the condenser 22 is located at the front side of the three-way valve 3, the first side wall 311 is close to the condenser 22, and the second side wall 312 is far from the condenser 22. The first side wall 311 is provided with a valve hole 313, and the side wall corresponding to the connecting pipeline 14 is also provided with a matched hole. One end of the valve plate 32 is disposed on the first sidewall 311 and is rotatable with respect to the first sidewall 311, and the other end of the valve plate 32 is a free end, thereby opening or closing the valve hole 313 such that the inside of the case 25 of the refrigerating apparatus 2 communicates with or closes the oil smoke passage 11. The valve body 31 is opened at both upper and lower ends thereof to supply smoke and/or air therethrough. The three-way valve 3 further includes a driving mechanism 33 for driving the valve plate 32 to rotate, in this embodiment, a gear motor is used to control the opening and closing of the valve plate 32 and the opening and closing angle, the rotation axis of the valve plate 32 moves in the left-right direction, the lower end of the valve plate 32 is connected with the first sidewall 311, and the upper end is a free end.

Referring to fig. 2, in the first state of the three-way valve 3, the corresponding operating state is that the range hood body 1 is opened and the refrigerating device 2 is not operated, at this time, the valve plate 32 closes the valve hole 313, opens the oil smoke channel 11, closes the passage between the valve body 31 and the inside of the casing 25 of the refrigerating device 2, and thereby disconnects the blower assembly 13 from the casing 25, and cannot suck air in the casing 25 (mainly around the condenser 22). Grooves cooperating with the valve plate 32 may be provided on the first sidewall 311 to ensure tightness when the valve plate 32 is closed.

Referring to fig. 7, in the second state of the three-way valve 3, the corresponding working state is that the range hood body 1 and the refrigerating device 2 work simultaneously, at this time, the valve plate 32 of the three-way valve 3 is opened at a certain angle, and the oil smoke channel 11 and the passage between the valve body 31 and the interior of the box 25 of the refrigerating device 2 are opened, so that the fan assembly 13 and the box 25 are communicated, at this time, the range hood fan assembly 13 is used for exhausting oil smoke and radiating the condenser 22 (the air around the condenser 22 is sucked into the valve body 31 through the valve hole 313 and then enters the fan assembly 13 upwards), and the valve plate 32 is opened at a certain angle and has the effect of guiding the oil smoke and the air.

Referring to fig. 8, in the third state of the three-way valve 3, the corresponding working state is that the refrigerating device 2 works independently, at this time, the valve plate 32 of the three-way valve 3 is opened by a certain angle, the opening angle is larger than that of the second state, the free end is preferably abutted against the second side wall 312, so that the fan assembly 13 is communicated with the box 25, the air inlet assembly 12 is closed, the oil smoke channel 11 is closed, at this time, the condenser 22 is cooled by the fan assembly 13 of the range hood, and the valve plate 32 has the function of guiding air.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims (15)

1. A condenser comprising fins (221), characterized in that: the condenser further comprises a water locking structure (222) arranged on the side wall of the fin (221), and the side wall of the fin (221) and the water locking structure (222) jointly form a concave water storage tank (223) capable of storing water.

2. The utility model provides a range hood, includes range hood body (1) and refrigerating plant (2), its characterized in that: the refrigeration device (2) comprises a condenser according to claim 1.

3. The range hood of claim 2, wherein: the refrigerating device (2) further comprises a compressor (21), an evaporator (23) and a condensed water treatment structure capable of using condensed water generated by the evaporator (23) for heat dissipation of the condenser.

4. A range hood according to claim 3, wherein: the condensed water treatment structure comprises a first water receiving disc (271) arranged at the bottom of the evaporator (23) and a second water receiving disc (272) arranged below the first water receiving disc (271), the condenser is positioned below the second water receiving disc (272), and the second water receiving disc (272) receives condensed water flowing down from the first water receiving disc (271) and can be poured onto the condenser.

5. The range hood of claim 4, wherein: the bottom of first water collector (271) has seted up hole (2711) that leaks, the upper surface of second water collector (272) is provided with water conservancy diversion strip (274), water conservancy diversion strip (274) have at least two, and one end of each water conservancy diversion strip (274) corresponds the below of hole (2711) and the other end then extends to the condenser top to pour the comdenstion water on the condenser.

6. The range hood of claim 4, wherein: the bottom of the second water receiving disc (272) is provided with an atomization device (275) for radiating heat of the condenser after atomizing part of condensed water from the first water receiving disc (271).

7. The range hood of claim 4, wherein: the condensed water treatment structure further comprises a third water receiving disc (273) arranged below the second water receiving disc (272), the third water receiving disc (273) is positioned below the condenser, and a concave water storage tank (2731) is formed in the third water receiving disc (273); the condensate water treatment structure further includes a water pump (276) for pumping water from the water storage tank (2731) into the second water receiving tray (272).

8. A range hood according to claim 3, wherein: the refrigerating device (2) further comprises a box body (25), the compressor (21), the condenser and the evaporator (23) are arranged in the box body (25), and the box body (25) is provided with an air outlet (252) and an air inlet (251) for room temperature air to enter;

the refrigerating device (2) further comprises an air cooler (24) for blowing out the cold air around the evaporator (23) after heat exchange from the air outlet (252).

9. The range hood of claim 8, wherein: a filter screen (253) is arranged at the air inlet (251).

10. The range hood of claim 8, wherein: the air outlet (252) is provided with a negative ion generator (26).

11. The range hood of claim 2, wherein: the range hood body (1) comprises a fan assembly (13), the refrigerating device (2) further comprises a compressor (21) and an evaporator (23), the compressor (21), the condenser and the evaporator (23) are arranged in a box body (25), an air outlet (252) and an air inlet (251) for room temperature air to enter are formed in the box body (25), and the fan assembly (13) in the box body (25) can be in fluid communication, so that hot air around the condenser is discharged through the fan assembly (13).

12. The range hood of claim 11, wherein: the range hood is characterized in that a lampblack channel (11) is formed in the range hood body (1), the range hood further comprises a three-way valve (3), and the three-way valve (3) is arranged in the lampblack channel (11) and can be in the following three states:

first state: the oil smoke channel (11) is opened, and the fan assembly (13) is disconnected from the box body (25);

second state: the oil smoke channel (11) is opened, and the fan assembly (13) is communicated with the box body (25);

third state: the oil smoke channel (11) is closed and the fan assembly (13) is communicated with the box body (25).

13. The range hood of claim 12, wherein: the range hood body (1) further comprises an air inlet assembly (12) and a connecting pipeline (14) connected between the air inlet assembly (12) and the fan assembly (13), the oil smoke channel (11) is formed in the air inlet assembly (12), the connecting pipeline (14) and the fan assembly (13), the three-way valve (3) is arranged in the connecting pipeline (14), and the box body (25) is arranged adjacent to the connecting pipeline (14).

14. The range hood of claim 13, wherein: the three-way valve (3) comprises a valve body (31) and a valve plate (32), wherein the valve body (31) comprises a first side wall (311) and a second side wall (312) which are oppositely arranged, the first side wall (311) is close to the condenser, the second side wall (312) is far away from the condenser, a valve hole (313) is formed in the first side wall (311), a hole matched with the valve hole (313) is formed in the side wall corresponding to the connecting pipeline (14), one end of the valve plate (32) is arranged on the first side wall (311) and can rotate relative to the first side wall (311), and the other end of the valve plate (32) is a free end;

in a first state, the valve plate (32) closes the valve hole (313);

in a second state, the valve plate (32) is rotated by a certain angle towards the second side wall (312);

in the third state, the valve plate (32) rotates towards the second side wall (312) by a larger angle than in the second state, and the free end of the valve plate (32) is abutted with the second side wall (312) to close the oil smoke channel (11).

15. The range hood of claim 2, wherein: the range hood body (1) comprises an air inlet assembly (12), a fan assembly (13) and a connecting pipeline (14) connected between the air inlet assembly (12) and the fan assembly (13), wherein the fan assembly (13) is used for being arranged on a suspended ceiling, and the refrigerating device (2) is arranged on the front side of the connecting pipeline (14).