CN221122340U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a shell provided with a containing space and a heat exchange device arranged in the containing space, wherein the heat exchange device comprises a water collecting disc, a heat exchange component and a heat radiation fan. The water collecting tray is positioned in the accommodating space. The heat exchange assembly comprises an evaporator, a condenser and a compressor, wherein the evaporator is arranged on a water collecting disc, the evaporator is configured to form condensed water, and the water collecting disc collects the condensed water; the condenser is connected with the evaporator, the condenser is arranged on one side of the evaporator and is arranged on the water collecting disc, the compressor is arranged between the evaporator and the compressor and is connected with the evaporator and the condenser. The heat radiation fan is arranged on the water collecting disc and is opposite to the condenser. Outside air can form the comdenstion water at the surface of evaporimeter with the contact of evaporimeter, and the comdenstion water drip to the water catch tray, and when the cooling fan was operated, can bring the condensate water of water catch tray to the condenser surface. The high temperature condenser can evaporate the condensed water, and the condensed water is consumed to reduce the temperature of the condenser.

Description

Fume exhaust fan

Technical Field

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

Background

The range hood is mainly used for exhausting harmful gases and peculiar smell such as oil smoke, smog, steam and the like generated in the cooking process. The method pumps away the polluted air generated in the kitchen in the modes of air suction, filtration and discharge, and keeps the indoor air fresh and clean.

At present, an air conditioner is arranged in a part of range hoods, and the discharge of oil smoke, the purification of air and the control of temperature are realized through one device. This combination saves space and also helps to promote overall comfort in the indoor environment. In the related art, the condenser temperature of the air conditioner of the range hood is too high to be lowered.

Disclosure of utility model

In order to solve at least one problem in the prior art, at least one embodiment of the application provides a range hood, which comprises a shell provided with a containing space and a heat exchange device arranged in the containing space, wherein the heat exchange device comprises a water collecting disc, a heat exchange component and a heat dissipation fan. The water collecting disc is positioned in the accommodating space. The heat exchange assembly comprises an evaporator, a condenser and a compressor, wherein the evaporator is arranged on the water collecting disc and is configured to form condensed water, and the water collecting disc is used for collecting the condensed water; the condenser is connected with the evaporator, the condenser is arranged on the water collecting disc and is positioned on one side of the evaporator, the compressor is arranged on the water collecting disc and is positioned between the evaporator and the compressor, and the compressor is connected with the evaporator and the condenser. The heat dissipation fan is arranged on the water collecting disc and is opposite to the condenser, and the heat dissipation fan is used for guiding airflow to pass through the condenser and bringing condensed water in the water collecting disc to the condenser.

In the range hood, the temperature of the evaporator is low, condensed water can be formed on the surface of the evaporator by contacting external air with the evaporator, the condensed water drops to the water collecting disc, and when the cooling fan operates, the condensed water of the water collecting disc can be brought to the surface of the condenser. The high-temperature condenser can evaporate condensed water, so that the temperature of the condenser can be reduced, and the condensed water can be consumed.

In some embodiments, the heat dissipation fan comprises a bracket, a driving piece and a plurality of fan blades. The support is arranged on the water collecting disc and is opposite to the condenser. The driving piece is connected with the bracket. The fan blades are arranged around the driving piece at intervals in the circumferential direction and used for driving the fan blades to rotate.

In some embodiments, the water collecting tray is provided with a water tank for collecting the condensed water, the water tank being configured to be able to guide the condensed water to the heat radiation fan.

In some embodiments, the heat exchange device further comprises a conduit located in the flow-guiding groove of the water-collecting tray and having opposite first and second ends, the first end being adjacent to the evaporator and the second end being adjacent to the heat-dissipating fan, for guiding condensed water in the water-collecting tray near the evaporator to near the heat-dissipating fan.

In some embodiments, a water collecting tank is arranged at the bottom of the diversion trench, and the water collecting tank is positioned below the heat dissipation fan.

In some embodiments, the conduit is disposed through the heat dissipating fan and is connected to the heat dissipating fan such that the second end is adjacent to the heat dissipating fan.

In some embodiments, the range hood further comprises a cold air blower disposed at the water collection tray adjacent to the evaporator. The housing includes an outer housing and an inner housing. The side of shell is equipped with first hot-blast air intake, first cold wind air intake and first cold wind air outlet, the bottom surface of shell is equipped with first hot-blast air outlet. The inner shell is positioned in the outer shell, the accommodating space is positioned in the inner shell, a second hot air inlet, a second cold air inlet and a second cold air outlet which are all communicated with the accommodating space are formed in the upper end of the inner shell, and a second hot air outlet is formed in the bottom of the inner shell. The first hot air inlet is communicated with the second hot air inlet, and external air sequentially passes through the first hot air inlet, the second hot air inlet, the heat radiation fan, the condenser, the second hot air outlet and the first hot air outlet. The first cold air inlet, the second cold air outlet and the first cold air outlet are communicated, and external air sequentially passes through the first cold air inlet, the second cold air inlet, the evaporator, the cold air blower, the second cold air outlet and the first cold air outlet.

In some embodiments, the first hot air inlet, the first cold air inlet, and the first cold air outlet are the same in height and all located on the same side of the housing; the shell is movably connected with a baffle plate, and the baffle plate is configured to move relative to the shell so as to close or expose the first hot air inlet, the first cold air inlet and the first cold air outlet.

In some embodiments, a first partition plate and a second partition plate are arranged at the upper end of the inner shell, the first partition plate is located between the second hot air inlet and the second cold air outlet, and the second partition plate is located between the second cold air outlet and the second cold air inlet.

In some embodiments, a filter is connected to the first cold air inlet, and external air passes through the filter from the first cold air inlet to the second cold air inlet.

Compared with the prior art, the range hood provided by the embodiment of the utility model has the beneficial effects that:

The range hood can adjust the temperature through the refrigerating device of the range hood. The condensed water generated by the refrigerating device can be brought to the condenser through the heat radiation fan, the condenser evaporates the condensed water so as to reduce the discharge of the condensed water, and the condenser is cooled through the condensed water so as to improve the cooling effect of the condenser.

Drawings

Fig. 1 is a perspective view of a range hood according to an embodiment of the present application.

Fig. 2 is a perspective view of a heat exchange device and an exhaust device according to an embodiment of the present application.

Fig. 3 is a top view of the range hood of fig. 1.

Fig. 4 is a perspective view of the heat dissipating fan and the duct of fig. 2.

Fig. 5 is a perspective view of the housing of fig. 1.

Fig. 6 is a perspective view of the range hood of fig. 1 at another angle.

Wherein the reference numerals have the following meanings:

100. A range hood;

10. A housing; 11. a housing; 111. a first hot air inlet; 112. a first cold air inlet; 113. a first cold air outlet; 114. a first hot air outlet; 12. an inner case; 121. a second hot air inlet; 122. a second cold air inlet; 123. a second cold air outlet; 124. a second hot air outlet; 13. a baffle; 141. a first separator; 142. a second separator; 15. an accommodating space;

20. A heat exchange device; 21. a water collecting tray; 211. a water collection tank; 212. a diversion trench; 22. a heat exchange assembly; 221. an evaporator; 222. a condenser; 223. a compressor; 23. a heat radiation fan; 231. a bracket; 232. a driving member; 233. a fan blade; 24. a cold air blower; 25. a conduit; 251. a first end; 252. a second end;

30. a filter;

40. An air draft device;

X, a first direction; y, second direction; z, third direction.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

It should be noted that, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an azimuth or a positional relationship based on that shown in the drawings, or that the inventive product is commonly put in place when used, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The invention is described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, for the sake of clarity, a coordinate system is established in the figure, and the range hood of the present application will be illustrated by using the coordinate system, wherein the X-axis is the length of the range hood, the Y-axis is the width of the range hood, and the Y-axis is perpendicular to the X-axis. The Z axis is perpendicular to a plane formed by the X axis and the Y axis, the Z axis is the height of the range hood, and the description of the upper position, the lower position and the like of the range hood is based on the Z axis.

Referring to fig. 1, 2 and 3, a range hood 100 is disclosed in an embodiment of the application, wherein the range hood 100 includes a housing 10 and a heat exchange device 20. The shell 10 is provided with a containing space 15, the heat exchange device 20 is positioned in the containing space 15, and the heat exchange device 20 can blow out cold air or hot air to adjust the temperature. Optionally, the range hood 100 further includes an air extracting device 40, where the air extracting device 40 is connected to the housing 10, and the air extracting device 40 is used for exhausting oil smoke and smog.

The heat exchange device 20 comprises a water collecting disc 21, a heat exchange assembly 22 and a heat radiation fan 23. The water collecting tray 21 is located the accommodation space 15, the heat transfer device 20 includes heat transfer component 22 and radiator fan 23, and heat transfer device 20 and radiator fan all are located the water collecting tray 21, are equipped with the refrigerant in the heat transfer device 20, and the refrigerant flows and produces the phase transition in heat transfer device 20 to make heat transfer component 22 can exchange heat with outside air. The heat dissipation fan 23 is used for controlling the airflow to flow to the heat exchange assembly 22 so as to cool the heat exchange assembly 22.

Optionally, the heat exchange device 20 further includes a cold air blower 24, the cold air blower 24 is disposed on the water collecting tray 21, and the cold air blower 24 is used for guiding the air flow to cool and then output cold air through the heat exchange device 20.

The heat exchange assembly 22 includes an evaporator 221 and a condenser 222, the evaporator 221 is disposed on the water collecting tray 21, the evaporator 221 is configured to form condensed water, the condensed water is collected by the water collecting tray 21, the condenser 222 is connected with the evaporator 221, the condenser 222 is disposed on the water collecting tray 21 and located at one side of the evaporator 221, and the condenser 222 and the evaporator 221 are sequentially disposed along the X-axis direction.

The heat radiation fan 23 is opposite to the condenser 222 along the Y axis, and the heat radiation fan 23 is used for guiding air flow to pass through the condenser 222 and guiding condensed water in the water collecting tray 21 to the condenser 222. The condenser 222 can evaporate condensed water, and the condensed water can cool down the condenser 222. The cold air blower 24 is opposite to the evaporator 221 along the X-axis to guide the air flow to pass through the evaporator 221 to form cold air, and the cold air is blown out of the range hood 100.

The temperature of the evaporator 221 is low, the external air contacts with the evaporator 221 to form condensed water on the surface of the evaporator 221, the condensed water drops to the water collecting tray 21, and when the heat radiation fan 23 operates, the condensed water of the water collecting tray 21 can be brought to the surface of the condenser 222. The condenser 222 with a high temperature can evaporate condensed water, so that the condensed water can be consumed while the temperature of the condenser 222 is reduced.

The heat exchange assembly 22 is capable of cooling and heating, when the heat exchange assembly 22 is switched from the cooling mode to the heating mode, the refrigerant flows in the opposite direction, the original evaporator 221 becomes the condenser 222, and the original condenser 222 becomes the evaporator 221, and for convenience of understanding, the evaporator 221 and the condenser 222 of the heat exchange assembly 22 of the present application are exemplified by the evaporator 221 and the condenser 222 when the heat exchange assembly 22 is in the cooling mode.

The heat exchange assembly 22 further includes a compressor 223 and an expansion valve (not shown), wherein the compressor 223 and the expansion valve are positioned between the evaporator 221 and the condenser 222, and are connected to the condenser 222 and the compressor 223, and the refrigerant sequentially passes through the evaporator 221, the compressor 223, the condenser 222 and the expansion valve and then flows back to the condenser 222.

The refrigerant flows in the heat exchange unit 22, absorbs or releases heat by the phase change, and thereby increases the temperature of the condenser 222 and decreases the temperature of the evaporator 221. The condenser 222 is cooled by the cooling fan 23, and the air flow passes through the evaporator 221 by the cold air fan 24 to form cold air to blow out of the range hood 100.

Alternatively, the cool air blower 24 is a centrifugal fan. Air can be sucked into the centrifugal fan and then discharged from the air outlet at an angle of 90 degrees to the air inlet, so that the position of the cold air outlet can be adjusted.

Referring to fig. 2 and 4, in some embodiments, the heat dissipation fan 23 includes a bracket 231, a driving member 232, and a plurality of fan blades 233, and the bracket 231 is disposed on the water collecting tray 21 and faces the condenser 222. The driving member 232 is connected to the bracket 231. The fan blades 233 are disposed at intervals along the circumference of the driving member 232.

The driving piece 232 and the fan blades 233 are supported by the support 231, the driving piece 232 drives the fan blades 233 to rotate, the fan blades 233 guide air flow to pass through the condenser 222, so that the condenser 222 is cooled, and the fan blades 233 can also guide condensed water in the water collecting disc 21 to the condenser 222, so that the condenser 222 is cooled further.

Alternatively, the driving member 232 is a motor, and a rotating shaft (not shown) of the motor is connected to the fan 233 to drive the fan 233 to rotate. The motor is provided with a mounting case (not shown) outside, and is connected to the bracket 231 through the mounting case so that the motor is mounted to the bracket.

In some embodiments, the heat dissipation fan 23 is an axial flow fan that is capable of effectively drawing air flow and condensed water into the condenser 222 to cool the condenser 222. Optionally, an axial fan blows air down the condenser 222 along the Y-axis.

In some embodiments, the water collecting tray 21 is provided with a diversion trench 212, and the condensed water generated by the evaporator 221 flows into the diversion trench 212, and the diversion trench 212 can guide the condensed water to the position of the cooling fan 23, so that the cooling fan 23 can guide the condensed water to the condenser 222.

In some embodiments, the heat exchange device 20 further includes a conduit 25, where the conduit 25 is located in the flow channel 212 of the water collecting tray 21 and has a first end 251 and a second end 252 opposite to each other, the first end 251 being adjacent to the evaporator 221, and the second end 252 being adjacent to the heat dissipation fan 23, for guiding condensed water in the water collecting tray 21 near the evaporator 221 to near the heat dissipation fan 23.

Condensed water can be guided to the cooling fan 23 through the guide pipe 25, and is brought to the condenser 222 through the fan blades 233 of the cooling fan 23 to cool the condenser 222.

In some embodiments, the conduit 25 extends through the cooling fan 23 and is coupled to the bracket 231 of the cooling fan 23 such that the second end 252 is adjacent to the cooling fan 23. It should be understood that the connection manner of the catheter 25 and the bracket 231 is not limited, for example, the bracket 231 is provided with a buckle, and the catheter 25 is detachably connected to the buckle.

The second end 252 is fixed by the bracket 231, so that the guide pipe 25 can be kept stable, and the condensed water can be guided to the cooling fan 23.

In some embodiments, the heat exchange device 20 further includes a water pump (not shown) disposed on the water collecting tray 21 and connected to the first end 251 or the second end 252 of the conduit 25, and the water pump is configured to pump condensed water at the first end 251 to the heat dissipating fan 23. The efficiency of the pipe 25 for transporting the condensed water can be improved by providing a water pump.

In some embodiments, the water collection tray 21 is provided with a water collection tank 211 at the bottom of the diversion trench 212, the water collection tank 211 is positioned below the heat dissipation fan 23, and the first end 251 is positioned on the water collection tray 21.

The condensed water can be more concentrated on the cooling fan 23 by arranging the water collecting tank 211, and the depth of the condensed water is increased, so that the cooling fan 23 can bring the condensed water to the condenser 222.

In order to enable the heat dissipation fan 23 and the cool air fan 24 to stably operate, the housing 10 is provided with a hot air inlet channel, a hot air outlet channel, a cool air inlet channel and a hot air inlet channel. The external air passes through the hot air inlet channel, the heat dissipation fan 23, the condenser 222 and the hot air outlet channel in sequence under the action of the heat dissipation fan 23. The external air sequentially passes through the cold air inlet channel, the evaporator 221, the cold air blower 24 and the cold air outlet channel under the action of the cold air blower 24.

Referring to fig. 3, 5 and 6, in some embodiments, the housing 10 includes an outer housing 11 and an inner housing 12, a first hot air inlet 111, a first cold air inlet 112 and a first cold air outlet 113 are disposed on a side surface of the outer housing 11, which is vertical and perpendicular to the Y axis, and the first hot air inlet 111, the first cold air outlet 113 and the first cold air inlet 112 are sequentially disposed along the X axis and are all located at an upper end of the side surface of the outer housing 11. The housing 11 is further provided with a first hot air outlet 114, and the first hot air outlet 114 is located at the lower end of the housing 11.

The inner shell 12 is located in the outer shell 11, the accommodating space 15 is located in the inner shell 12, and a second hot air inlet 121, a second cold air inlet 122 and a second cold air outlet 123 which are all communicated with the accommodating space 15 are arranged at the upper end of the inner shell 12. Along the X-axis direction, the second hot air inlet 121, the second cold air outlet 123, and the second cold air inlet 122 are sequentially disposed. The bottom of the inner casing 12 is provided with a second hot air outlet 124.

The first hot air inlet 111 is communicated with the second hot air inlet 121 and forms a hot air inlet channel, the first hot air outlet 114 and the second hot air outlet 124 form a hot air outlet channel, and external air sequentially passes through the first hot air inlet 111, the second hot air inlet 121, the heat dissipation fan 23, the condenser 222 and the second hot air outlet 124 and is discharged from the first hot air outlet 114.

The first cold air inlet 112, the second cold air inlet 122, the second cold air outlet 123 and the first cold air outlet 113 are communicated, and external air sequentially passes through the first cold air inlet 112, the second cold air inlet 122, the evaporator 221, the cold air blower 24, the second cold air outlet 123 and the first cold air outlet 113.

The overall strength of the range hood 100 can be increased by arranging the outer shell 11 and the inner shell 12, and the external air sequentially passes through the first hot air inlet 111, the second hot air inlet 121, the heat dissipation fan 23, the condenser 222 and the second hot air outlet 124 and is discharged from the first hot air outlet 114, so that the temperature of the condenser 222 is reduced stably. The external air sequentially passes through the first cool air inlet 112, the second cool air inlet 122, the evaporator 221, the second cool air outlet 123 and the first cool air outlet 113, so as to be discharged.

It should be understood that the positions of the first hot air inlet 111, the first cold air inlet 112, and the first cold air outlet 113 are not limited to the side surface of the housing 11 perpendicular to the Y axis, and in other embodiments, the positions may be set according to practical situations, for example, the first hot air inlet 111 is set on the opposite side surface of the housing 11, or set on the side surface perpendicular to the X axis.

In some embodiments, a first partition 141 and a second partition 142 are disposed at the upper end of the inner casing 12, the first partition 141 and the second partition 142 are disposed along the X-axis at intervals, the first partition 141 is located between the second hot air inlet 121 and the second cold air outlet 123, and the second partition 142 is located between the second cold air outlet 123 and the second cold air inlet 122.

The first and second partition plates 141 and 142 can block the air flow, so that the air flow can stably pass through the hot air inlet channel, the cold air inlet channel and the cold air outlet channel.

In some embodiments, the first hot air inlet 111, the first cold air inlet 112, and the first cold air outlet 113 are the same in height and all located on the same side of the housing 11. The housing 11 is movably connected with a baffle 13, and the baffle 13 is configured to be movable relative to the housing 11 to close or expose the first hot air inlet 111, the first cold air inlet 112, and the first cold air outlet 113.

The baffle 13 moves relative to the housing 11, so that the first hot air inlet 111, the first cold air inlet 112 and the first cold air outlet 113 are exposed when the range hood 100 operates, and air flow is facilitated. When the range hood 100 stops operating, the first hot air inlet 111, the first cold air inlet 112 and the first cold air outlet 113 are closed to reduce dust and the like from entering the range hood 100. Alternatively, the shutter 13 is rotatably connected to the housing 11, and the rotation axis of the shutter 13 is parallel to the X axis.

In some embodiments, the filter 30 is connected to the first cool air inlet 112, and the external air passes through the filter 30 from the first cool air inlet 112 to the second cool air inlet 122. Optionally, the filter 30 is a screen.

The air is purified through the filter 30 into the first cool air inlet 112 so as to improve the quality of the discharged cool air.

The range hood 100 discharges the oil smoke through the air extraction device 40 in addition to the temperature adjustment through the heat exchange device 20. The air extracting device 40 is located in the housing 11, penetrates the water collecting tray 21 from bottom to top and extends out of the housing 11, and the lower end of the air extracting device 40 can extract external air and discharge the external air from the upper section through the air extracting device 40.

In summary, the present application provides a range hood 100, and the temperature of the range hood 100 can be adjusted by the heat exchange device 20. The condensed water generated by the heat exchange device 20 can be brought to the condenser 222 through the heat radiation fan 23, the condenser 222 evaporates the condensed water to reduce the discharge of the condensed water, and the condensed water is used for cooling the condenser 222 to improve the cooling effect of the condenser 222.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a lampblack absorber, including the casing that is equipped with accommodation space and set up in heat transfer device in accommodation space, its characterized in that, heat transfer device includes:

The water collecting disc is positioned in the accommodating space;

The heat exchange assembly comprises an evaporator, a condenser and a compressor, wherein the evaporator is arranged on the water collecting disc and is configured to form condensed water, and the water collecting disc is used for collecting the condensed water; the condenser is connected with the evaporator, the condenser is arranged on the water collecting disc and is positioned on one side of the evaporator, the compressor is arranged on the water collecting disc and is positioned between the evaporator and the compressor, and the compressor is connected with the evaporator and the condenser;

The heat dissipation fan is arranged on the water collecting disc and is opposite to the condenser, and the heat dissipation fan is used for guiding airflow to pass through the condenser and leading condensed water in the water collecting disc to the condenser.

2. The range hood of claim 1, wherein the heat dissipation fan comprises:

the bracket is arranged on the water collecting disc and is opposite to the condenser;

The driving piece is connected with the bracket;

The fan blades are arranged around the circumference of the driving piece at intervals and used for driving the fan blades to rotate.

3. The range hood according to claim 1, wherein the water collection tray is provided with a flow guide groove for collecting the condensed water, the flow guide groove being configured to guide the condensed water to the heat radiation fan.

4. A range hood according to claim 3, wherein the heat exchange means further comprises a conduit located in the flow channel of the water collection tray and having opposite first and second ends, the first end being adjacent the evaporator and the second end being adjacent the heat sink fan for directing condensate water in the water collection tray adjacent the evaporator to adjacent the heat sink fan.

5. A range hood according to claim 3, wherein the bottom of the diversion trench is provided with a water collection trench, and the water collection trench is positioned below the heat radiation fan.

6. The range hood of claim 4, wherein the conduit extends through the heat dissipating fan and is connected to the heat dissipating fan such that the second end is adjacent to the heat dissipating fan.

7. The range hood of any one of claims 1 to 6 further comprising a cold air blower disposed in the water collection tray adjacent to the evaporator, the housing comprising:

The shell is provided with a first hot air inlet, a first cold air inlet and a first cold air outlet on the side face, and a first hot air outlet is arranged on the bottom face of the shell;

The inner shell is positioned in the outer shell, the accommodating space is positioned in the inner shell, a second hot air inlet, a second cold air inlet and a second cold air outlet which are all communicated with the accommodating space are formed in the upper end of the inner shell, and a second hot air outlet is formed in the bottom of the inner shell;

The first hot air inlet is communicated with the second hot air inlet, and external air sequentially passes through the first hot air inlet, the second hot air inlet, the heat radiation fan, the condenser, the second hot air outlet and the first hot air outlet;

the first cold air inlet, the second cold air outlet and the first cold air outlet are communicated, and external air sequentially passes through the first cold air inlet, the second cold air inlet, the evaporator, the cold air blower, the second cold air outlet and the first cold air outlet.

8. The range hood of claim 7, wherein the first hot air inlet, the first cold air inlet, and the first cold air outlet are the same in height and are all located on the same side of the housing; the shell is movably connected with a baffle plate, and the baffle plate is configured to move relative to the shell so as to close or expose the first hot air inlet, the first cold air inlet and the first cold air outlet.

9. The range hood of claim 7, wherein a first partition and a second partition are disposed at the upper end of the inner housing, the first partition is located between the second hot air inlet and the second cold air outlet, and the second partition is located between the second cold air outlet and the second cold air inlet.

10. The range hood of claim 7, wherein a filter is connected to the first cold air inlet, and external air passes through the filter from the first cold air inlet to the second cold air inlet.