Refrigeration extractor hood and control method thereof

Abstract

The invention discloses a refrigeration extractor hood and a control method thereof.The refrigeration extractor hood comprises an oil smoke suction assembly and a refrigeration assembly, the refrigeration assembly comprises an evaporator and a condenser, and a first water pan used for receiving condensate water generated by the evaporator is arranged below the evaporator; the condenser is provided with a fluid passage, the fluid passage comprises a refrigerant passage and a cooling passage, and the cooling passage is provided with a cold water inlet and a cold water outlet; the refrigeration assembly further comprises a second water pan arranged below the first water pan, and the second water pan is in fluid communication with the cold water inlet and the cold water outlet. The range hood further comprises a control module used for controlling the first water pan to drain water to the second water pan, controlling the second water pan to supply water to the cooling channel and controlling the second water pan to drain water.

Description

Technical Field

[0001] The present invention relates to an oil fume purification device, in particular to a refrigerating range hood and a control method for the refrigerating range hood. Background Art

[0002] With the improvement of the material living standard, people have higher and higher requirements for the kitchen environment. When people cook, they need to use cooking utensils, etc., and a large amount of heat will be generated in the kitchen, resulting in an increase in the temperature of the entire space and a decrease in the environmental comfort. At present, most families use temporary addition of fans to solve this problem. However, this method is not only inconvenient but also occupies the kitchen area.

[0003] For this reason, there has been a range hood with a refrigerating function disclosed in the prior art, which can blow cold air from the casing of the range hood to cool the kitchen interior. For example, an air-conditioning range hood disclosed in a Chinese patent with the application number 201810525673.7, the oil fume component of the air-conditioning range hood includes an oil fume passage; the air-conditioning component includes a condenser component, and the condenser component includes a condensation air inlet and a condensation air outlet. The condensation air outlet is communicated with the oil fume passage, and the condensation air inlet is independent of the oil fume passage. However, with this arrangement of the condenser, its heat dissipation is carried out by using the main fan for sucking oil fume, resulting in a reduction in the amount of oil fume sucked and discharged, affecting the oil fume suction effect. And the condenser is usually a fin-tube type or parallel-flow type condenser, with a large wind resistance, resulting in a decrease in the smoking effect and an increase in the working noise.

[0004] There is also a kitchen air conditioner disclosed in a Chinese patent with the application number 202110029969.1, which includes an air-conditioning component and a range hood component. The air-conditioning component includes a compressor, a condenser, a throttling element, and an evaporator. The range hood component includes an exhaust pipe and an exhaust fan in the exhaust pipe, and the condenser is arranged around the outer peripheral wall of the exhaust pipe.

[0005] For this kind of kitchen air conditioner, it can utilize the oil fume to dissipate heat from the condenser without additional power, but only through the heat-conducting smoke pipe can the oil fume exchange heat with the pipe wall of the condenser. The heat exchange path is long and the heat dissipation fluid is single, so the heat exchange efficiency is low and still needs further improvement. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a refrigerating range hood aiming at the deficiencies of the above-mentioned prior art, improve the heat dissipation efficiency of the condenser of the refrigerating component, and improve the refrigerating effect.

[0007] The second technical problem to be solved by the present invention is to provide a control method for the above-mentioned refrigerating range hood.

[0008] The technical solution adopted by the present invention to solve the above first technical problem is as follows: A refrigerating range hood, comprising an oil fume suction assembly and a refrigerating assembly, the refrigerating assembly includes an evaporator and a condenser, and a first water receiving tray for receiving the condensed water generated by the evaporator is arranged below the evaporator; characterized in that:

[0009] The condenser has a fluid passage, the fluid passage includes a refrigerant passage and a cooling passage, and the cooling passage has a cold water inlet and a cold water outlet;

[0010] The refrigerating assembly further includes a second water receiving tray arranged below the first water receiving tray, and the second water receiving tray is in fluid communication with the cold water inlet and the cold water outlet respectively;

[0011] The range hood further includes a control module for controlling the drainage of the first water receiving tray to the second water receiving tray, the water supply of the second water receiving tray to the cooling passage, and the drainage of the second water receiving tray.

[0012] By forming a cooling passage in the condenser, the condensed water generated by the refrigeration of the refrigerating assembly is fully utilized, and the condenser is further heat-exchanged and cooled by the latent cold of the condensed water, thereby improving the heat dissipation efficiency of the condenser and further improving the refrigeration effect of the refrigerating assembly.

[0013] Further, the first water receiving tray and the second water receiving tray are in fluid communication through a first conduit, and a water inlet solenoid valve is arranged on the first conduit, and the water inlet solenoid valve is electrically connected to the control module, whereby the drainage of the first water receiving tray to the second water receiving tray can be controlled by controlling the water inlet solenoid valve.

[0014] Further, the second water receiving tray and the cold water inlet of the condenser are in fluid communication through a second conduit, and a water pump is arranged on the second conduit, and the water pump and the control module are electrically connected, whereby the water supply of the second water receiving tray to the condenser can be controlled by controlling the water pump.

[0015] Further, the second water receiving tray is further connected with a drain pipe, and a drain solenoid valve is arranged on the drain pipe, and the drain solenoid valve is electrically connected to the control module, whereby the drainage of the second water receiving tray can be controlled by controlling the drain solenoid valve.

[0016] Further, the refrigerating assembly is located above the oil fume suction assembly, and the refrigerating assembly further includes a third water receiving tray arranged at the bottom of the oil fume suction assembly, and the drain pipe is connected to the third water receiving tray, thereby facilitating the dumping of waste water.

[0017] Further, a first water level sensor is arranged in the first water receiving tray, and a second water level sensor is arranged in the second water receiving tray, and each water level sensor is electrically connected to the control module so that the control module controls the drainage of the first water receiving tray and the second water receiving tray according to the detection values of each water level sensor.

[0018] Furthermore, a water temperature sensor is also provided in the second water receiving tray, and the water temperature sensor is electrically connected to the control module so that the control module controls the second water receiving tray to supply water to the cooling channel according to the detected value of the water temperature sensor.

[0019] Furthermore, to reduce the water temperature in the second water tray and improve the heat dissipation effect of the condenser, the second water receiving tray is made of a heat-conducting material, and a radiator is provided at the bottom of the second water receiving tray;

[0020] The oil fume suction assembly includes a main fan, and the radiator is placed in the space where the main fan is located.

[0021] Furthermore, the oil fume suction assembly includes a main fan, and on the oil fume flow path, the condenser is arranged downstream of the main fan;

[0022] The condenser includes a heat-conducting main body, the main body is in the shape of a pipe for oil fume to pass through, and the refrigerant channel and the cooling channel are formed inside the wall of the main body. By making the condenser as a whole in the shape of a pipe, the inside of it can be cooled by the oil fume passing through the inside of the pipe, and the outside can be cooled by the air in the external environment. Moreover, the heat transfer path between the refrigerant channel and the heat-dissipating oil fume or air is short. Thus, the refrigerant flowing inside the condenser tube wall can be fully cooled, improving the overall heat exchange efficiency, and further improving the refrigeration effect of the refrigeration component.

[0023] Preferably, to ensure a short refrigerant heat transfer path, the wall of the main body includes two heat-conducting plates, and the refrigerant channel and the cooling channel are respectively formed between the two heat-conducting plates.

[0024] Preferably, the refrigerant channel has a refrigerant inlet and a refrigerant outlet;

[0025] The refrigerant inlet and the cold water inlet are arranged adjacent to each other, and the refrigerant outlet and the cold water outlet are arranged adjacent to each other;

[0026] Or, the refrigerant inlet and the cold water outlet are arranged adjacent to each other, and the refrigerant outlet and the cold water inlet are arranged adjacent to each other.

[0027] The technical solution adopted by the present invention to solve the above second technical problem is: a control method for an oil fume extractor as described above, characterized in that it includes the following steps:

[0028] 1) When the refrigeration function is turned on, the refrigeration component starts to operate;

[0029] 2) Determine whether the water level in the second water receiving tray reaches the water level set value. If so, control the first water receiving tray to replenish water to the second water receiving tray until the water level in the second water receiving tray reaches the water level set value;

[0030] 3) Control the second water receiving tray to supply water to the cooling channel, so as to assist in dissipating heat from the condenser;

[0031] 4) Detect the water temperature T1 in the second water receiving tray in real time, and judge whether the water temperature reaches the set water temperature value T0. If T1 < T0, the second water receiving tray continuously supplies water to the cooling channel. If T1 ≥ T0, drain the water in the second water receiving tray;

[0032] 5) When the water level in the second water receiving tray reaches the set minimum water level, stop draining;

[0033] 6) Control the first water receiving tray to replenish water into the second water receiving tray until the set water level value is reached, and then return to step 3).

[0034] Compared with the prior art, the advantages of the present invention are as follows: By forming a cooling channel in the condenser, the condensed water generated by the refrigeration of the refrigeration component is fully utilized, and the latent cold of the condensed water is used to further exchange heat and cool the condenser, thereby improving the heat dissipation efficiency of the condenser and further improving the refrigeration effect of the refrigeration component; By making the condenser as a whole in a pipe shape, the inside can be cooled by the oil fume passing through the inside of the pipe, and the outside can be cooled by the air in the external environment. Moreover, the heat transfer path between the refrigerant channel and the cooling oil fume or air is short, so that the refrigerant flowing inside the condenser tube wall can be fully cooled, improving the overall heat exchange efficiency and further improving the refrigeration effect of the refrigeration component; Using the radiator to transfer the cooling water, and discharging the heat with the main fan of the oil fume suction component can reduce the temperature of the cooling water entering the cooling channel and further improve the heat dissipation efficiency; Controlling the water supply and drainage according to the water level and water temperature of each water receiving tray to ensure a sufficient amount of cooling water and cooling water at a lower temperature. Brief Description of the Drawings

[0035] Figure 1 It is a front view cross-sectional view of the range hood according to the embodiment of the present invention;

[0036] Figure 2 It is a side view cross-sectional view of the range hood according to the embodiment of the present invention;

[0037] Figure 3 It is a top view of the range hood according to the embodiment of the present invention (hiding the exhaust duct);

[0038] Figure 4 It is a schematic diagram of the condenser of the refrigeration component of the range hood according to the embodiment of the present invention;

[0039] Figure 5 It is a cross-sectional view of the condenser of the refrigeration component of the range hood according to the embodiment of the present invention;

[0040] Figure 6 It is Figure 5 partial enlarged schematic view of I;

[0041] Figure 7 It is an exploded view of the condenser of the refrigeration component of the range hood according to an embodiment of the present invention;

[0042] Figure 8 It is an exploded view of the condenser of an alternative embodiment of the refrigeration component of the range hood of the present invention;

[0043] Figure 9 It is a flowchart of the control method of the range hood according to an embodiment of the present invention. Detailed implementation manners

[0044] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the disclosed embodiments of the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0046] See Figures 1 to 6 , a refrigerating range hood, comprising an oil fume suction component and a refrigerating component. Among them, the oil fume suction component includes a first housing 11 and a main fan 12 arranged in the first housing 11. In this embodiment, the shown oil fume suction component is in the form of a commonly used side suction range hood. Optionally, it can be in any form such as an existing top suction type, low suction type, ceiling-mounted type, etc. The first housing 11 can be a combination of one or more housings.

[0047] The oil fume extraction component and the refrigeration component respectively form independent modules. During installation, the refrigeration component is mounted on top of the oil fume extraction component. Thus, the refrigeration component does not occupy the space on the left and right sides of the first housing 11 of the oil fume extraction component, which can avoid the offset of the fan frame (a part of the first housing 11) for setting the main fan 12 from affecting the oil fume extraction effect itself. Moreover, the two modules are installed independently, which can meet the needs of newly decorated users as well as users who want to replace the old components.

[0048] The refrigeration component includes a second housing 21, a compressor 22, an evaporator 23, a condenser 24, and a cooling fan 25. The second housing 21 is arranged on top of the first housing 11. The compressor 22, the evaporator 23, the condenser 24, and the cooling fan 25 can be arranged inside the second housing 21, and a refrigerant passage is formed among the compressor 22, the evaporator 23, and the condenser 24. The working principle of the refrigeration component is the same as that of the prior art.

[0049] At the front side of the second housing 21, such as near the top, a cold air outlet 211 is provided. The evaporator 23 can be arranged near the cold air outlet 211. The cold air after heat exchange through the evaporator 23 is blown into the kitchen from the cold air outlet 211 by the cooling fan 25 to provide a comfortable cooking environment temperature for the user. A swingable air deflector 29 can be arranged at the cold air outlet 211 to change the air supply angle and distance. Refer to Figure 2 , and the swing axis of the air deflector 29 is in the direction perpendicular to the paper surface. On other sides of the second housing 21, such as the left and right sides, air inlets 212 are provided to supplement air (room temperature air) into the second housing 21. When the cooling fan 25 operates, the room temperature air outside the second housing 21 can be sucked into the second housing 21, and after heat exchange with the evaporator 23, it is blown into the kitchen from the cold air outlet 211. To avoid impurities and the like from being sucked into the refrigeration component, a filter screen 213 can be arranged at the air inlets 212 so that the filtered clean cold air is blown into the second housing 21, preventing particulate matter in the air from adhering to the evaporator 23 and thus affecting the refrigeration efficiency.

[0050] The condenser 24 includes a main body 241 and fluid passages. The main body 241 is in the shape of a hollow pipe, preferably cylindrical, and the fluid passages are formed inside the wall of the main body 241. In this embodiment, the main body 241 is arranged longitudinally, especially vertically, and the opposite ends of the main body 241 (the upper and lower ends in this embodiment) are open. The wall of the main body 241 includes two layers of heat-conducting plates 2411, and the fluid passages are formed between the two layers of heat-conducting plates 2411. The two layers of heat-conducting plates 2411 have gaps only at the positions where the fluid passages are formed, and are in contact with each other in other parts (the gaps existing in the non-fluid passages due to process problems are regarded as gapless situations). Optionally, the heat-conducting plates 2411 are metal plates, such as preferably aluminum plates. Two aluminum plates are hot-rolled and shaped, and the fluid passages are formed by blowing between the two aluminum plates, and then the whole is rolled into the required shape. The refrigerant in the fluid passages after hot rolling can withstand a pressure of up to 2.3 MPa, and there is zero-gap contact between the refrigerant and the heat-conducting material, so the heat exchange efficiency is extremely high. Therefore, the surface temperature of the condenser under natural environment is not higher than 50 °C. In the existing fin type commonly used in air conditioners or the winding type described in the background art, there cannot be a completely gapless fit between the refrigerant and the heat-conducting material, so the heat transfer is not smooth, resulting in a high temperature of the condenser itself, which in turn affects the overall refrigeration effect of the refrigeration components.

[0051] There are at least two fluid passages, and at least one of them is a refrigerant passage 242 for the refrigerant to pass through. The refrigerant passage 242 has a refrigerant inlet 2421 and a refrigerant outlet 2422.

[0052] On the oil fume flow path, the condenser 24 is arranged downstream of the main fan 12. It can be directly connected to the air outlet of the main fan 12, or connected to the main fan 12 through the air outlet hood 13, or can be connected to the exhaust pipe (not shown) as a part of the exhaust pipe. That is, the space surrounded by the inner heat-conducting plate 2411 of the main body 241 constitutes an exhaust passage 2412 for the oil fume discharged by the main fan 12 to pass through before reaching the common flue or being discharged into the room. The inner side wall surface of the inner heat-conducting plate 2411 (i.e., the inner side wall surface 2413 of the main body 241) and the outer side wall surface of the outer heat-conducting plate 411 (i.e., the outer side wall surface 2414 of the main body 241) both constitute heat dissipation surfaces. The inner heat dissipation surface is cooled by the oil fume passing through the exhaust passage 2412, and the outer heat dissipation surface contacts the room temperature air entering the second housing 21 from the kitchen indoor environment during operation, and can also achieve a certain degree of heat dissipation. This room temperature air constitutes the heat dissipation fluid.

[0053] To further improve the heat exchange efficiency, at least one of the fluid passages is a cooling passage 243 for the cooling liquid to pass through, and it is independent of the refrigerant passage 242. See Figure 7, to clearly show the relationship between the refrigerant channel 242 and the cooling channel 243, it is schematically shown in the unfolded state of the condenser 24. The cooling channel 243 has a cold water inlet 2431 and a cold water outlet 2432. A cooling liquid, such as condensed water, can be passed through the cooling channel 243, or external tap water, etc. can also be connected. The flow directions of the refrigerant in the refrigerant channel 242 and the cooling liquid in the cooling channel 243 can be the same. Both channels are arranged in a spiral shape, and both inlets are located at the upper end. The arrows indicate the flow directions of the refrigerant and the cooling liquid. Alternatively, the cold water inlet 2431 can also be at the lower end, see Figure 8 . That is to say, the refrigerant inlet 2421 and the cold water inlet 2431 are arranged adjacent to each other, and the refrigerant outlet 2422 and the cold water outlet 2432 are arranged adjacent to each other. Or, the refrigerant inlet 2421 and the cold water outlet 2432 are arranged adjacent to each other, and the refrigerant outlet 2422 and the cold water inlet 2431 are arranged adjacent to each other.

[0054] In the above Figure 7 and Figure 8 , one refrigerant channel 242 and one cooling channel 243 are arranged at uniform intervals. Alternatively, it can also be arranged with two refrigerant channels 242 and one cooling channel 243 at intervals, or other numbers of channel arrangement methods can also be used.

[0055] In addition, to prevent too much grease from adhering to the inner wall of the condenser 24, an oil-repellent coating can be sprayed on the inner wall surface.

[0056] The refrigeration assembly further includes a first water receiving tray 261 and a second water receiving tray 262. The first water receiving tray 261 is arranged below the evaporator 23 and is used to receive the condensed water generated by the evaporator 23. The second water receiving tray 262 can preferably be arranged below the first water receiving tray 261 and is used to receive the condensed water in the first water receiving tray 261. The first water receiving tray 261 and the second water receiving tray 262 are in fluid communication through a first conduit 263. An inlet solenoid valve 264 is arranged on the first conduit 263 to control the on-off of the flow path between the first water receiving tray 261 and the second water receiving tray 262.

[0057] A first water level sensor 265 is arranged in the first water receiving tray 261 to monitor the water level in the first water receiving tray 261. A second water level sensor 266 is arranged in the second water receiving tray 262 to monitor the water level in the second water receiving tray 262. The water level sensor can adopt a liquid level sensor in the prior art. A water temperature sensor 267 is also arranged in the second water receiving tray 262 to monitor the water temperature of the condensed water in the second water receiving tray 262.

[0058] There is fluid communication between the inside of the second water receiving tray 262 and the cold water inlet 2431 of the condenser 24 through a second conduit 268. A water pump 269 is provided on the second conduit 268 for pumping the condensed water in the second water receiving tray 262 into the condenser 24 to provide power for the circulation of the condensed water. The cold water outlet 2432 of the condenser 24 is also in fluid communication with the second water receiving tray 262, such as by means of a conduit connection as well.

[0059] The second water receiving tray 262 can be made of metal or other materials with good heat conduction performance. A radiator 27 is provided at the bottom of the second water receiving tray 262. The radiator 27 can be a metal heat dissipation device, for example. Thus, the heat of the second water receiving tray 262 can be conducted to the radiator 27 for heat dissipation and temperature reduction to lower the water temperature in the second water receiving tray 262. The radiator 27 is placed in the space where the main fan 12 is located inside the first housing 11. Thus, when the main fan 12 operates, the heat around the radiator 27 can be taken away.

[0060] To facilitate the drainage of the water in the second water receiving tray 262, the refrigeration assembly further includes a third water receiving tray 28, which can be provided at the bottom of the oil fume extraction assembly. The second water receiving tray 262 and the third water receiving tray 28 are connected by a drain pipe 281. A drain solenoid valve 282 is provided on the drain pipe 281 for controlling the drainage of the second water receiving tray 262 into the third water receiving tray 28. A third water level sensor 283 is provided in the third water receiving tray 28 for monitoring the water level in the third water receiving tray 28. This water level sensor can also be a liquid level sensor in the prior art. Alternatively, a separate third water receiving tray 28 may not be provided, but instead, the oil cup 14 at the bottom of the first housing 11 of the oil fume extraction assembly is used to receive the water drained from the second water receiving tray 26.

[0061] The range hood further includes a control module 3 for controlling the oil fume extraction assembly and the refrigeration assembly. The main fan 12 of the above-mentioned oil fume extraction assembly, each solenoid valve, sensor, and water pump 269 of the refrigeration assembly are all electrically connected to the control module 3 and thus controlled by the control module 3.

[0062] The range hood further includes an exhaust duct 4 connected to the condenser 24. The connection between them can be achieved through an adapter 41. The diameter of the exhaust duct 4 and the diameter of the condenser 24 are preferably adapted. When the oil fume extraction assembly operates, when the oil fume passes through the condenser 24, the airflow flushes the inner surface to take away most of the heat, while the inner surface of the condenser 24 transfers the heat to the second water receiving tray 262 through the condensed water circulation. Through the contact between the second water receiving tray 262 and the radiator 27, the heat is conducted to the radiator 27, and then the main fan 12 discharges the heat.

[0063] See Figure 9 , the control method of the range hood of the present invention includes the following steps:

[0064] 1) The refrigeration function is turned on, and the refrigeration component starts to operate;

[0065] 2) Determine whether the water level detected by the second water level sensor 266 reaches the water level set value. If so, the water inlet solenoid valve 264 remains closed. If not, the water inlet solenoid valve 264 is opened to replenish water to the second water receiving tray 262 until the water level in the second water receiving tray 262 reaches the set value;

[0066] 3) The water pump 269 is started to turn on the cooling water circulation function, supply water to the cooling channel 243, and thus assist in dissipating heat from the condenser 24;

[0067] 4) The water temperature sensor 267 continuously detects the water temperature T1 in the second water receiving tray 262 and determines whether the water temperature reaches the set water temperature value T0. If T1 < T0, the water pump 269 continues to circulate the cooling water. If T1 ≥ T0, the drain solenoid valve 282 is opened to drain the hot water in the second water receiving tray 262. This is because if the water temperature is too high, the heat dissipation effect of the cooling water becomes poor. Therefore, after the cooling water circulates for a certain period of time, the water temperature rises and the heat dissipation effect becomes poor. The drain solenoid valve 282 is opened to drain the high-temperature water and then replenish low-temperature condensed water to ensure a stable heat dissipation effect;

[0068] 5) When the water level in the second water receiving tray 262 reaches the set minimum water level, the drain solenoid valve 282 is closed;

[0069] 6) Open the water inlet solenoid valve 264 to replenish low-temperature condensed water into the first water receiving tray 261 until the water level reaches the set value, then close the water inlet solenoid valve 264, and then return to step 3).

[0070] As used in the present invention, "fluid communication" refers to the spatial position relationship between two components or parts (hereinafter uniformly referred to as the first part and the second part respectively), that is, a fluid (gas, liquid or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing the fluid to flow through, or a combination of the above.

Claims

1. A refrigerating range hood, comprising an oil fume suction assembly and a refrigerating assembly. The refrigerating assembly includes an evaporator (23) and a condenser (24). A first water receiving tray (261) for receiving the condensed water generated by the evaporator (23) is arranged below the evaporator (23); and it is characterized in that: The condenser (24) has a fluid passage, and the fluid passage includes a refrigerant channel (242) and a cooling channel (243). The cooling channel (243) has a cold water inlet (2431) and a cold water outlet (2432); The refrigerating assembly further includes a second water receiving tray (262) arranged below the first water receiving tray (261). The second water receiving tray (262) is in fluid communication with the cold water inlet (2431) and the cold water outlet (2432) respectively; The range hood further includes a control module (3) for controlling the drainage from the first water receiving tray (261) to the second water receiving tray (262), the water supply from the second water receiving tray (262) to the cooling channel (243), and the drainage of the second water receiving tray (262).

2. The refrigerating range hood according to claim 1, wherein: Fluid communication between the first water receiving tray (261) and the second water receiving tray (262) is achieved through a first conduit (263). An inlet solenoid valve (264) is arranged on the first conduit (263), and the inlet solenoid valve (264) is electrically connected to the control module (3).

3. The refrigerating range hood according to claim 1, characterized in that: Fluid communication between the second water receiving tray (262) and the cold water inlet (2431) of the condenser (24) is achieved through a second conduit (268). A water pump (269) is arranged on the second conduit (268), and the water pump (269) is electrically connected to the control module (3).

4. The refrigerating range hood according to claim 1, wherein: The second water receiving tray (262) is further connected to a drain pipe (281). A drain solenoid valve (282) is arranged on the drain pipe (281), and the drain solenoid valve (282) is electrically connected to the control module (3).

5. The refrigerating range hood according to claim 4, characterized in that: The refrigerating assembly is located above the oil fume suction assembly. The refrigerating assembly further includes a third water receiving tray (28) arranged at the bottom of the oil fume suction assembly, and the drain pipe (281) is connected to the third water receiving tray (28).

6. The refrigerating range hood according to claim 1, wherein: A first water level sensor (265) is arranged in the first water receiving tray (261), and a second water level sensor (266) is arranged in the second water receiving tray (262). Each water level sensor is electrically connected to the control module (3) so that the control module (3) controls the drainage of the first water receiving tray (261) and the second water receiving tray (262) according to the detection values of the water level sensors.

7. The refrigerating range hood according to claim 1, wherein: A water temperature sensor (267) is further arranged in the second water receiving tray (262). The water temperature sensor (267) is electrically connected to the control module (3) so that the control module (3) controls the water supply from the second water receiving tray (262) to the cooling channel (243) according to the detection value of the water temperature sensor (267).

8. The refrigerating range hood according to claim 1, characterized in that: The second water receiving tray (262) is made of a heat-conducting material, and a radiator (27) is arranged at the bottom of the second water receiving tray (262); The oil fume suction assembly includes a main fan (12), and the radiator (27) is placed in the space where the main fan (12) is located.

9. The refrigerating range hood according to claim 1, wherein: The oil fume extraction component includes a main fan (12), and in the oil fume flow path, the condenser (24) is arranged downstream of the main fan (12). The condenser (24) includes a heat-conducting main body (241), the main body (241) is in the shape of a pipe for oil fume to pass through, and the refrigerant channel (242) and the cooling channel (243) are formed inside the wall of the main body (241).

10. The refrigerating range hood according to claim 9, wherein: The wall of the main body (241) includes two heat-conducting plates (2411), and the refrigerant channel (242) and the cooling channel (243) are respectively formed between the two heat-conducting plates (2411).

11. The refrigerating range hood according to claim 10, wherein: The refrigerant channel (242) has a refrigerant inlet (2421) and a refrigerant outlet (2422). The refrigerant inlet (2421) and the cold water inlet (2431) are arranged adjacent to each other, and the refrigerant outlet (2422) and the cold water outlet (2432) are arranged adjacent to each other. Alternatively, the refrigerant inlet (2421) and the cold water outlet (2432) are arranged adjacent to each other, and the refrigerant outlet (2422) and the cold water inlet (2431) are arranged adjacent to each other.

12. A control method for a range hood according to any one of claims 1 to 11, characterized in that: It includes the following steps: 1) When the refrigeration function is turned on, the refrigeration component starts to operate. 2) Judge whether the water level in the second water receiving tray (262) reaches the set water level value. If so, control the first water receiving tray (261) to supply water to the second water receiving tray (262) until the water level in the second water receiving tray (262) reaches the set water level value. 3) Control the second water receiving tray (262) to supply water to the cooling channel (243), so as to assist in dissipating heat from the condenser (24). 4) Detect the water temperature T1 in the second water receiving tray (262) in real time, and judge whether the water temperature reaches the set water temperature value T0. If T1 < T0, the second water receiving tray (262) continues to supply water to the cooling channel (243). If T1 ≥ T0, drain the water in the second water receiving tray (262). 5) When the water level in the second water receiving tray (262) reaches the set minimum water level, stop draining. 6) Control the first water receiving tray (261) to supply water to the second water receiving tray (262) until the set water level value is reached, and then return to step 3).

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