Condensate water treatment system of refrigeration type range hood and control method

Abstract

The condensate water treatment system comprises a compressor, an indoor unit module, an outdoor unit module and a water storage box, the indoor unit module comprises an evaporator and an indoor unit fan, the indoor unit fan is provided with a volute and an impeller, an indoor unit water pan is arranged below the evaporator, a water outlet is formed in the bottom of the indoor unit water pan, and a water outlet is formed in the water outlet. An inlet of the three-way valve is communicated with the water outlet, a first outlet of the three-way valve is communicated with the water inlet end of the purified water inlet pipe, a second outlet of the three-way valve is communicated with the water inlet end of the sewage inlet pipe, and the water storage box is divided into a purified water area and a sewage area. The water outlet end of the purified water inlet pipe is communicated with the purified water area, and the water outlet end of the sewage inlet pipe is communicated with the sewage area. According to the condensate water treatment system of the refrigeration type range hood, self-cleaning of the evaporator and cleaning of the fan impeller of the inner machine can be conducted, and sewage generated after self-cleaning flows into the sewage area of the water storage box through the sewage pipe and is prevented from being mixed with clean condensate water in the clean water area.

Description

Technical Field

[0001] The invention relates to a refrigeration type range hood, and in particular to a condensed water processing system and a control method of the refrigeration type range hood. Background Art

[0002] Various refrigeration-type range hoods are disclosed in the prior art. An air conditioning component is added to the range hood platform, which can realize all the functions of the range hood and the function of the air conditioner. The air conditioning component includes an internal module and an external module, wherein the internal module includes an evaporator and an internal fan, and the external module includes a condenser and an external fan. Since the refrigeration hood is installed in a kitchen fume environment, and the return air of the internal module usually uses indoor return air, dust and oil will remain on the surface of the evaporator and the impeller of the internal fan after long-term use, and they need to be cleaned in time. If they are not cleaned in time, the air quality of the air outlet of the air conditioner will be reduced, affecting the user experience and affecting the normal operation of the refrigeration system. Existing air-conditioning-type range hoods can only perform self-cleaning of the condenser. For example, in the Chinese utility model patent No. 202220040537.0 (authorization public number CN 217685714 U), "A water pump flow control system and an air-conditioning range hood", when working in the air-conditioning mode (cooling mode), the condensed water condensed on the evaporator flows into the water receiving tray, and the condensed water in the water receiving tray flows into the water box through the water inlet pipe. Under the action of the water pump, the condensed water in the water box is transported to the liquid distributor through the water outlet pipe, and then flows from the liquid distributor to the surface of the condenser. On the one hand, the condenser is cooled, further improving its heat exchange effect and realizing the effective utilization of the condensed water. On the other hand, the condensed water is heated and evaporated by the condenser and discharged from the first smoke exhaust channel. The condensed water that has not been evaporated flows into the water receiving box, and then flows back to the water box through the return pipe for repeated utilization. The air-conditioning range hood can only perform self-cleaning of the condenser alone, and the sewage after cleaning is not discharged separately, but accumulated in the water storage box. When the water pump is operated again, the sewage will block the water pump, causing damage to the water pump. In addition, the sewage accumulated in the water storage box will also cause odor. In summary, the existing condensate treatment system of the refrigeration range hood needs to be further improved. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a condensate treatment system for a refrigeration range hood capable of achieving self-cleaning of an evaporator and an internal fan in view of the above-mentioned prior art status.

[0004] The second technical problem to be solved by the present invention is to provide a control method for the above-mentioned condensate treatment system in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a condensate treatment system for a refrigeration type range hood, comprising a compressor, an internal unit module, an external unit module and a water storage box, the internal unit module comprising an evaporator and an internal unit fan, the internal unit fan having a volute and an impeller installed inside the volute, characterized in that an internal unit water receiving pan is arranged below the evaporator, a drain outlet is arranged at the bottom of the internal unit water receiving pan, a water through hole is arranged at the bottom of the volute, the volute is connected with the internal unit water receiving pan through the water through hole, and also comprises a clean water inlet pipe, a sewage inlet pipe and a three-way valve, the inlet of the three-way valve is connected with the drain outlet, the first outlet of the three-way valve is connected with the water inlet end of the clean water inlet pipe, the second outlet of the three-way valve is connected with the water inlet end of the sewage inlet pipe, the water storage box is divided into a clean water area and a sewage area, the water outlet end of the clean water inlet pipe is connected with the clean water area, and the water outlet end of the sewage inlet pipe is connected with the sewage area.

[0006] In order to detect whether the water level in the water receiving tray of the internal machine has reached a washable water level, a water level sensor is installed in the water receiving tray of the internal machine.

[0007] In order to ensure that the sewage after cleaning the impeller of the indoor fan can be discharged smoothly from the drain port, the drain port is lower than the water through hole.

[0008] Preferably, the internal machine water receiving pan is sealedly connected to the volute, or the internal machine water receiving pan and the volute are an integral part.

[0009] In order to avoid mixing of clean water and sewage, the clean water area and the sewage area are separated by a dam, and the sewage area is provided with an overflow outlet. The height of the dam is higher than the height of the overflow outlet, and the height of the dam is lower than the edge height of the water storage box.

[0010] In order to facilitate the overflow of water from the clean water area to flow to the sewage area, the depth of the clean water area is smaller than that of the sewage area.

[0011] The internal machine module can have a variety of assembly structures. Preferably, the internal machine module includes an internal machine housing, the evaporator is installed inside the internal machine housing, the internal machine water receiving tray is installed at the bottom of the internal machine housing, and the internal machine fan is installed on the side of the internal machine housing.

[0012] In order to return the unconsumed condensed water of the condenser to the water storage box, the external unit module includes an external unit housing, a condenser and a heat dissipation fan installed on the external unit housing. The bottom of the external unit housing is provided with a condensed water return port, and also includes an outlet pipe and a return pipe. The condensed water in the clean water area is transported to the condenser through the outlet pipe, and the condensed water flowing out of the condensed water return port flows into the water storage box through the return pipe. If the condensed water is used to dissipate heat for the condenser, it will flow back to the clean water area. If the condensed water is used to clean the condenser, it will flow back to the sewage area.

[0013] In order to evenly distribute the condensed water in the clean water area on the condenser, a water pump is installed in the water storage box, and a liquid distributor capable of distributing liquid to the condenser is installed on the top of the condenser. The water outlet of the water outlet pipe is connected with the water inlet of the liquid distributor, and the condensed water in the clean water area is transported to the condenser through the water pump, the water outlet pipe and the liquid distributor.

[0014] The technical solution adopted by the present invention to solve the second technical problem is: a control method for the condensate treatment system of the refrigeration range hood, characterized by comprising the following steps:

[0015] S1, power on;

[0016] S2, start the evaporator self-cleaning;

[0017] S3, three-way valve opens the sewage channel;

[0018] S4, the indoor fan is turned off, and the evaporator starts to condense and defrost to perform self-cleaning of the evaporator, generating cleaned sewage;

[0019] S5. The sewage after cleaning the evaporator flows into the sewage area of ​​the water storage box through the sewage inlet pipe, and then flows into the oil cup through the overflow port;

[0020] S6, the three-way valve is fully closed, and the clean water channel and the sewage channel are both closed;

[0021] S7, the indoor fan starts to run at the lowest speed, the evaporator produces condensed water, and the water begins to be stored in the indoor water receiving pan;

[0022] S8, determining whether the water level in the water tray of the internal unit has reached a washable water level;

[0023] If yes, the refrigeration system is turned off, the indoor fan continues to run at a low speed, and then enters step S9;

[0024] If not, return to step S7;

[0025] S9: The indoor fan continues to run at the lowest speed and cleans the indoor fan impeller;

[0026] S10, after the impeller of the indoor fan is cleaned, the three-way valve opens the sewage channel;

[0027] S11, the sewage after cleaning the impeller of the internal machine flows into the sewage area of ​​the water storage box through the sewage inlet pipe, and then flows into the oil cup through the overflow port;

[0028] S12, prompting the user to pour the oil cup.

[0029] Further preferably, the control method of the condensate treatment system of the refrigeration range hood is characterized by comprising the following steps:

[0030] S1, power on;

[0031] S2, start the evaporator self-cleaning;

[0032] S3, three-way valve opens the sewage channel;

[0033] S4, the indoor fan is turned off, and the evaporator starts to condense and defrost to perform self-cleaning of the evaporator, generating cleaned sewage;

[0034] S5. The sewage after cleaning the evaporator flows into the sewage area of ​​the water storage box through the sewage inlet pipe, and then flows into the oil cup through the overflow port;

[0035] S6, the three-way valve is fully closed, and the clean water channel and the sewage channel are both closed;

[0036] S7, the fan of the indoor unit is turned off, the evaporator starts to condense and defrost to produce condensed water, and water begins to be stored in the water receiving pan of the indoor unit;

[0037] S8, determining whether the water level in the water tray of the internal unit has reached a washable water level;

[0038] If yes, the refrigeration system is turned off and the process proceeds to step S9;

[0039] If not, return to step S7;

[0040] S9, the indoor fan is turned on and runs at the lowest speed, and the indoor fan impeller is cleaned;

[0041] S10, after the impeller of the indoor fan is cleaned, the three-way valve opens the sewage channel;

[0042] S11, the sewage after cleaning the impeller of the internal machine flows into the sewage area of ​​the water storage box through the sewage inlet pipe, and then flows into the oil cup through the overflow port;

[0043] S12, prompting the user to pour the oil cup.

[0044] Compared with the prior art, the advantages of the present invention are: the condensate treatment system of the refrigeration type range hood can not only perform self-cleaning of the evaporator, but also the volute of the indoor fan is connected with the indoor water receiving pan below the evaporator through the water hole. When the water level sensor detects that the washable water level is reached, the impeller of the indoor fan can also be cleaned with condensate. By switching the three-way valve, the sewage generated after self-cleaning of the evaporator and the sewage generated after self-cleaning of the fan both flow into the sewage area of ​​the water storage box through the sewage pipe to avoid mixing with the clean condensate in the clean water area. The condensate in the clean water area is transported to the condenser by a water pump, and the sewage will not block the water pump and cause damage to the water pump. Moreover, the sewage in the water storage box can be discharged in time to avoid odor in the water storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1It is a structural schematic diagram of a condensate water treatment system of a refrigeration-type range hood according to an embodiment of the present invention;

[0046] Figure 2 for Figure 1 A schematic structural diagram of the condensate treatment system from another angle is shown;

[0047] Figure 3 for Figure 1 A schematic diagram of the structure of the condensate treatment system from another different angle is shown;

[0048] Figure 4 It is a structural schematic diagram of a water storage box according to an embodiment of the present invention;

[0049] Figure 5 A structural cross-sectional view of an internal machine module according to an embodiment of the present invention;

[0050] Figure 6 A schematic flow chart of a normal working water circulation system of a condensate water treatment system according to an embodiment of the present invention;

[0051] Figure 7 It is a schematic diagram of the process of starting the evaporator self-cleaning of the condensate water treatment system according to an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of the process of starting condenser self-cleaning in the condensate treatment system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below with reference to the accompanying drawings.

[0054] like Figures 1 to 5 As shown, the condensate treatment system of the refrigeration type range hood of this embodiment includes main components such as a compressor 1, an indoor unit module 2, an outdoor unit module 3, a water storage box 4, a clean water inlet pipe 51, a sewage inlet pipe 52, a three-way valve 53, a water outlet pipe 54, a return pipe 55, a water pump 56 and a liquid distributor 6.

[0055] Among them, the indoor module 2 includes an indoor housing 21, an evaporator 22 and an indoor fan 23, and the outdoor module 3 includes an outdoor housing 31, a condenser 32 and a heat dissipation fan 33. The indoor module 2 and the outdoor module 3 are arranged adjacent to each other. Along the air flow direction, the indoor fan 23 is arranged downstream of the evaporator 22, and the heat dissipation fan 33 is arranged downstream of the condenser 32. The compressor 1, the condenser 32 and the evaporator 22 are connected through a refrigerant pipeline. The compressor 1, the condenser 32 and the evaporator 22 constitute an air conditioning component. After the compressor 1 is started, condensed water will condense on the surface of the evaporator 22. Its working principle is the same as that of the existing air conditioner, and will not be described in detail here.

[0056] The evaporator 22 is installed inside the inner machine housing 21. The inner machine water receiving pan 24 is installed at the bottom of the inner machine housing 21. The inner machine water receiving pan 24 is located below the evaporator 22. The condensed water condensed on the surface of the evaporator 22 can flow into the inner machine water receiving pan 24. A water level sensor 25 is installed in the inner machine water receiving pan 24 to detect the water level. A drain port 241 is opened at the bottom of the inner machine water receiving pan 24. The inner machine fan 23 is arranged at the side of the inner machine housing 21. The inner machine fan 23 is a centrifugal fan. The inner machine fan 23 has a volute 231 and an impeller 232 installed inside the volute 231. A water hole 233 is opened at the bottom of the volute 231. The volute 231 is connected to the inner machine water receiving pan 24 through the water hole 233, and the drain port 241 is lower than the water hole 233. The inner machine water receiving pan 24 can be sealed and connected to the volute 231, or it can be an integral part with the volute 231.

[0057] The water storage box 4 is divided into a clean water area 41 and a sewage area 42. The depth of the clean water area 41 is less than that of the sewage area 42. The clean water area 41 and the sewage area 42 are separated by a dam 43. The sewage area 42 is provided with an overflow port 44. The height of the dam 43 is higher than that of the overflow port 44. The height of the dam 43 is lower than the edge height of the water storage box 4, which effectively prevents the clean water and the sewage from mixing with each other and facilitates the smooth outflow of the sewage.

[0058] The inlet of the three-way valve 53 is connected to the drain outlet 241, the first outlet of the three-way valve 53 is connected to the water inlet end of the clean water inlet pipe 51, the second outlet of the three-way valve 53 is connected to the water inlet end of the sewage inlet pipe 52, the water outlet end of the clean water inlet pipe 51 is connected to the clean water area 41, and the water outlet end of the sewage inlet pipe 52 is connected to the sewage area 42.

[0059] The external unit module 3 includes an external unit housing 31, a condenser 32 and a heat dissipation fan 33 installed on the external unit housing 31, and a condensate return port 311 is provided at the bottom of the external unit housing 31. A water pump 56 is installed in the water storage box 4, and a liquid distributor 6 capable of distributing liquid to the condenser 32 is installed on the top of the condenser 32. The outlet of the water outlet pipe 54 is connected with the water inlet of the liquid distributor 6, and the condensate in the clean water area is transported to the condenser 32 through the water pump 56, the water outlet pipe 54 and the liquid distributor. The condensate that is not consumed by the condenser 32 flows back from the condensate return port 311 and flows into the water storage box 4 through the return pipe 55. In this embodiment, the return pipe 55 is connected with the clean water area of ​​the water storage box 4, and the condensate part of the heat dissipated by the condenser 32 flows back to the clean water area 41 for recycling. In addition, the return pipe 55 may also be connected to the sewage area 42 of the water storage box 4 , and when the condenser 32 is cleaned, the returned sewage may flow into the sewage area 42 .

[0060] like Figure 6 As shown, the control method of the condensate treatment system of the refrigeration type range hood includes the following steps:

[0061] A1. Turn on the power.

[0062] A2. Turn on the refrigeration system;

[0063] A3, three-way valve 53 opens the water purification channel;

[0064] A4, evaporator 22 produces condensed water;

[0065] A5, condensed water flows into the clean water inlet pipe 51, and then flows into the clean water area 41 of the water storage box 4;

[0066] A6. Turn on the water pump 56 to pump the condensed water in the water purification area 41 to the condenser 32 through the water outlet pipe 54 for evaporation and heat dissipation;

[0067] A7. The condensed water that cannot be evaporated by the condenser 32 flows back to the clean water area 41 of the water storage box 4 through the return pipe for recycling.

[0068] The above process is the condensed water circulation process when the refrigeration system works normally.

[0069] like Figure 7 As shown, when the system starts the evaporator self-cleaning and the internal machine impeller self-cleaning, a control method of the condensate treatment system of the refrigeration type range hood includes the following steps:

[0070] S1, power on;

[0071] S2, start the evaporator 22 for self-cleaning;

[0072] S3, three-way valve 53 opens the sewage channel;

[0073] S4, the indoor fan 23 is turned off, and the evaporator 22 starts to condense and defrost to perform self-cleaning of the evaporator 22, generating cleaned sewage;

[0074] S5, the sewage after cleaning the evaporator 22 flows into the sewage area 42 of the water storage box 4 through the sewage inlet pipe 52, and then flows into the oil cup through the overflow port 44;

[0075] S6, the three-way valve 53 is fully closed, and the clean water channel and the sewage channel are both closed;

[0076] S7, the indoor fan 23 is turned on at the lowest speed, the evaporator 22 produces condensed water, and the water begins to be stored in the indoor water receiving tray 24;

[0077] S8, determining whether the water level of the internal machine water receiving tray 24 has reached the washable water level;

[0078] If yes, the refrigeration system is turned off, the indoor fan 23 continues to run at a low speed, and then the process goes to step S9;

[0079] If not, return to step S7;

[0080] S9, the indoor fan 23 continues to run at the lowest speed, and the impeller 232 of the indoor fan 23 is cleaned;

[0081] S10, after the impeller 232 of the indoor fan 23 is cleaned, the three-way valve 53 opens the sewage channel;

[0082] S11, the sewage after cleaning the inner machine impeller 232 flows into the sewage area 42 of the water storage box 4 through the sewage inlet pipe 52, and then flows into the oil cup through the overflow port 44;

[0083] S12, prompting the user to pour the oil cup.

[0084] In this control method, before detecting whether the water level in the indoor water receiving tray 24 reaches the cleaning water level, the indoor fan 23 runs at the lowest speed, and the evaporator 22 produces condensed water until the impeller of the indoor fan 23 is cleaned. The indoor fan 23 always maintains the lowest speed.

[0085] like Figure 8 As shown, when the system starts the evaporator self-cleaning and the internal machine impeller self-cleaning, another control method of the condensate treatment system of the refrigeration type range hood includes the following steps:

[0086] S1, power on;

[0087] S2, start the evaporator 22 for self-cleaning;

[0088] S3, three-way valve 53 opens the sewage channel;

[0089] S4, the indoor fan 23 is turned off, and the evaporator 22 starts to condense and defrost to perform self-cleaning of the evaporator 22, generating cleaned sewage;

[0090] S5, the sewage after cleaning the evaporator 22 flows into the sewage area 42 of the water storage box 4 through the sewage inlet pipe 52, and then flows into the oil cup through the overflow port 44;

[0091] S6, the three-way valve 53 is fully closed, and the clean water channel and the sewage channel are both closed;

[0092] S7, the indoor fan 23 is turned off, the evaporator 22 starts to condense and defrost to produce condensed water, and water begins to be stored in the indoor water receiving tray 24;

[0093] S8, determining whether the water level of the internal machine water receiving tray 24 has reached the washable water level;

[0094] If yes, the refrigeration system is turned off and the process proceeds to step S9;

[0095] If not, return to step S7;

[0096] S9, the indoor fan 23 is turned on and runs at the lowest speed, and the impeller 232 of the indoor fan 23 is cleaned;

[0097] S10, after the impeller 232 of the indoor fan 23 is cleaned, the three-way valve 53 opens the sewage channel;

[0098] S11, the sewage after cleaning the inner machine impeller 232 flows into the sewage area 42 of the water storage box 4 through the sewage inlet pipe 52, and then flows into the oil cup through the overflow port 44;

[0099] S12, prompting the user to pour the oil cup.

[0100] In this control method, before detecting whether the water level in the indoor water receiving tray 24 reaches the cleaning water level, the indoor fan 23 is turned off and the evaporator 22 starts to condense and defrost to produce condensed water. The indoor fan 23 is not started to run at the lowest speed until the impeller of the indoor fan 23 is cleaned.

[0101] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A condensate treatment system for a refrigeration range hood, comprising a compressor (1), an internal module (2), an external module (3) and a water storage box (4), wherein the internal module (2) comprises an evaporator (22) and an internal fan (23), wherein the internal fan (23) comprises a volute (231) and an impeller (232) installed inside the volute (231), and wherein: An internal machine water receiving pan (24) is provided below the evaporator (22), a drain port (241) is provided at the bottom of the internal machine water receiving pan (24), a water through hole (233) is provided at the bottom of the volute (231), the volute (231) is connected to the internal machine water receiving pan (24) through the water through hole (233), and further comprises a clean water inlet pipe (51), a sewage inlet pipe (52) and a three-way valve (53), the inlet of the three-way valve being connected to the drain port (241). ), a first outlet of the three-way valve (53) is connected to the water inlet end of the clean water inlet pipe (51), a second outlet of the three-way valve (53) is connected to the water inlet end of the sewage inlet pipe (52), the water storage box (4) is divided into a clean water area (41) and a sewage area (42), the water outlet end of the clean water inlet pipe (51) is connected to the clean water area (41), and the water outlet end of the sewage inlet pipe (52) is connected to the sewage area (42).

2. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: A water level sensor (25) is installed in the internal machine water receiving tray (24).

3. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The drainage port (241) is lower than the water through hole (233).

4. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The internal machine water receiving tray (24) is sealedly connected to the volute (231), or the internal machine water receiving tray (24) and the volute (231) are an integral part.

5. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The clean water area (41) and the sewage area (42) are separated by a water retaining dam (43); the sewage area (42) is provided with an overflow port (44); the height of the water retaining dam (43) is higher than the height of the overflow port (44); and the height of the water retaining dam (43) is lower than the edge height of the water storage box (4).

6. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The indoor unit module (2) comprises an indoor unit casing (21), the evaporator (22) is installed inside the indoor unit casing (21), the indoor unit water receiving tray (24) is installed at the bottom of the indoor unit casing (21), and the indoor unit fan (23) is installed on the side of the indoor unit casing (21).

7. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The external unit module (3) comprises an external unit housing (31) and a condenser (32) and a heat dissipation fan (33) mounted on the external unit housing (31); a condensate return port (311) is provided at the bottom of the external unit housing (31), and the external unit housing (31) further comprises a water outlet pipe (54) and a water return pipe (55); the condensate in the water purification area is transported to the condenser (32) through the water outlet pipe (54), and the condensate flowing out of the condensate return port (311) flows into the water storage box (4) through the water return pipe (55).

8. The condensate treatment system for a refrigeration range hood according to claim 7, characterized in that: A water pump (56) is installed in the water storage box (4), and a liquid distributor (6) capable of distributing liquid to the condenser (32) is installed on the top of the condenser (32). The water outlet of the water outlet pipe (54) is connected to the water inlet of the liquid distributor (6), and the condensed water in the clean water area is transported to the condenser (32) through the water pump (56), the water outlet pipe (54) and the liquid distributor.

9. A control method for a condensate treatment system of a refrigeration range hood, characterized in that The steps include: S1, power on; S2, start the evaporator (22) for self-cleaning; S3, three-way valve (53) opens the sewage channel; S4, the indoor fan (23) is turned off, and the evaporator (22) starts to condense and defrost to perform self-cleaning of the evaporator (22), thereby generating cleaned sewage; S5, the sewage after cleaning the evaporator (22) flows into the sewage area (42) of the water storage box (4) through the sewage inlet pipe (52), and then flows into the oil cup through the overflow port (44); S6, the three-way valve (53) is in the fully closed state, and both the clean water channel and the sewage channel are closed; S7, the indoor fan (23) is turned on at the lowest speed, the evaporator (22) produces condensed water, and the water begins to be stored in the indoor water receiving tray (24); S8, determining whether the water level of the water receiving tray (24) of the internal machine has reached a washable water level; If yes, the refrigeration system is turned off, the indoor fan (23) continues to run at a low speed, and then the process goes to step S9; If not, return to step S7; S9, the indoor fan (23) continues to run at the lowest speed, and the impeller (232) of the indoor fan (23) is cleaned; S10, after the impeller (232) of the indoor fan (23) is cleaned, the three-way valve (53) opens the sewage channel; S11, the sewage after cleaning the impeller (232) of the internal machine flows into the sewage area (42) of the water storage box (4) through the sewage inlet pipe (52), and then flows into the oil cup through the overflow port (44); S12, prompting the user to pour the oil cup.

10. A control method for a condensate treatment system of a refrigeration range hood, characterized in that The steps include: S1, power on; S2, start the evaporator (22) for self-cleaning; S3, three-way valve (53) opens the sewage channel; S4, the indoor fan (23) is turned off, and the evaporator (22) starts to condense and defrost to perform self-cleaning of the evaporator (22), thereby generating cleaned sewage; S5, the sewage after cleaning the evaporator (22) flows into the sewage area (42) of the water storage box (4) through the sewage inlet pipe (52), and then flows into the oil cup through the overflow port (44); S6, the three-way valve (53) is in the fully closed state, and both the clean water channel and the sewage channel are closed; S7, the indoor fan (23) is turned off, the evaporator (22) starts to condense and defrost to produce condensed water, and water begins to be stored in the indoor water receiving tray (24); S8, determining whether the water level of the water receiving tray (24) of the internal machine has reached a washable water level; If yes, the refrigeration system is turned off and the process proceeds to step S9; If not, return to step S7; S9, the indoor fan (23) is turned on and runs at the lowest speed, and the impeller (232) of the indoor fan (23) is cleaned; S10, after the impeller (232) of the indoor fan (23) is cleaned, the three-way valve (53) opens the sewage channel; S11, the sewage after cleaning the impeller (232) of the internal machine flows into the sewage area (42) of the water storage box (4) through the sewage inlet pipe (52), and then flows into the oil cup through the overflow port (44); S12, prompting the user to pour the oil cup.

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