Condensate water treatment system and control method for a refrigerated extractor hood

Abstract

A condensate water treatment system and control method of a refrigeration type range hood, a first three-way valve inlet is communicated with a condensate water outlet, a first three-way valve first outlet is communicated with a clean water inlet pipe water inlet end, a first three-way valve second outlet is communicated with a sewage inlet pipe water inlet end, a second three-way valve inlet is communicated with a condensate water return port, a second three-way valve first outlet is communicated with a clean water return pipe water inlet end, a second three-way valve second outlet is communicated with a sewage return pipe water inlet end, the clean water inlet pipe water outlet end and the clean water return pipe water outlet end are both communicated with a clean water area, the sewage inlet pipe and the sewage return pipe are communicated with a sewage area, and water in the clean water area is transported to a condenser through a water outlet pipe. The condensate water treatment system of the refrigeration type range hood can clean the evaporator, clean the condenser and clean separately, the cleaned sewage can overflow and be directly discharged into an oil cup after flowing into the sewage area, the water pump is not blocked and damaged, and the sewage is not accumulated in the water storage box.

Description

Technical Field

[0001] This invention relates to a refrigerated range hood, and more particularly to a condensate treatment system and control method for a refrigerated range hood. Background Technology

[0002] Various cooling-type range hoods are disclosed in the prior art, which add an air conditioning component to the base of a range hood platform, thus realizing both the functions of a range hood and an air conditioner. The air conditioning component includes an indoor unit module and an outdoor unit module. The indoor unit module includes an evaporator and an indoor fan, while the outdoor unit module includes a condenser and an outdoor fan. Some cooling-type range hoods install the condenser of the air conditioning component inside the exhaust duct. The condenser is susceptible to grease and smoke contamination and requires timely cleaning. Failure to clean it promptly will significantly reduce heat exchange efficiency, thus affecting air conditioning energy efficiency and increasing energy consumption. Furthermore, when operating in cooling mode, the condenser also needs to be cooled by the exhaust fan. While some cooling-type range hoods install the condenser outside the exhaust duct, dirt still accumulates on the condenser's surface after prolonged use, requiring cleaning to ensure effective heat exchange. In addition, since the range hood is installed in the kitchen's oily fume environment, and the return air of the indoor unit module usually uses indoor return air, dust and grease will remain on the surface of the evaporator after long-term use, requiring timely cleaning. For example, the Chinese utility model patent No. 202220040537.0 (authorized public number CN 217685714U) discloses a "Water Pump Flow Control System and Air Conditioning Range Hood," in which, when operating in air conditioning mode (cooling mode), the condensate condensed on the evaporator flows into a water collection tray. The condensate in the tray flows into a water box through the inlet pipe. Under the action of the water pump, the condensate in the water box is transported to the distributor through the outlet pipe, and then flows from the distributor to the surface of the condenser. This cools the condenser, further improving its heat exchange effect and achieving effective utilization of the condensate. Furthermore, the condensate is heated and evaporated by the condenser and discharged from the first exhaust channel. The unevaporated condensate flows into the water collection box and then returns to the water box through the return pipe for reuse. This air-conditioning type range hood can only perform self-cleaning of the condenser, and the wastewater after cleaning is not discharged separately but accumulates in the water storage box. When the water pump operates again, the wastewater will clog the pump, causing damage. Furthermore, the wastewater accumulation in the water storage box will also cause unpleasant odors. In conclusion, the condensate treatment system of the existing refrigeration type range hood needs further improvement. 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 refrigerated range hood that can clean the evaporator and condenser, in light of the above-mentioned existing technology.

[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 current state of the prior art.

[0005] The technical solution adopted by this invention to solve the first technical problem mentioned above is as follows: a condensate treatment system for a refrigerated range hood, comprising a compressor, an indoor unit module, an outdoor unit module, and a water storage box. The indoor unit module includes an indoor unit housing, an evaporator, and an indoor unit fan. The outdoor unit module includes an outdoor unit housing, a condenser, and a cooling fan. The compressor, condenser, and evaporator are connected via refrigerant piping. A condensate outlet is located at the bottom of the indoor unit housing, and a condensate return outlet is located at the bottom of the outdoor unit housing. The system is characterized by further including a clean water inlet pipe, a wastewater inlet pipe, a first three-way valve, an outlet pipe, a clean water return pipe, a wastewater return pipe, and a second three-way valve. The inlet of the first three-way valve is connected to the refrigerant... The condensate outlet is connected to the condensate return port. The first outlet of the first three-way valve is connected to the inlet of the clean water inlet pipe, and the second outlet of the first three-way valve is connected to the inlet of the sewage inlet pipe. The inlet of the second three-way valve is connected to the condensate return port, the first outlet of the second three-way valve is connected to the inlet of the clean water return pipe, and the second outlet of the second three-way valve is connected to the inlet of the sewage return pipe. The water storage box is divided into a clean water area and a sewage area. The outlets of the clean water inlet pipe and the clean water return pipe are both connected to the clean water area. The outlets of the sewage inlet pipe and the sewage return pipe are both connected to the sewage area. The water in the clean water area is transported to the condenser through the outlet pipe.

[0006] To prevent clean water and wastewater from mixing, the clean water area and the wastewater area are separated by a dam. The wastewater area is equipped with an overflow outlet. The height of the dam is higher than the height of the overflow outlet and lower than the edge height of the water storage box.

[0007] To facilitate the flow of water overflowing from the clean water area to the sewage area, the depth of the clean water area is less than the depth of the sewage area.

[0008] In order to transport the condensate in the water purification zone to the condenser, a water pump is also included. The water in the water purification zone is transported to the condenser through the water pump and the outlet pipe.

[0009] In order to distribute the condensate evenly on the condenser, a liquid distributor is installed on the top of the condenser to distribute the liquid to the condenser, and the outlet of the water outlet pipe is connected to the inlet of the liquid distributor.

[0010] The indoor unit module and the outdoor unit module can be installed in various ways. Preferably, the indoor unit module and the outdoor unit module are arranged adjacent to each other along the air flow direction. The indoor unit fan is located downstream of the evaporator, and the cooling fan is located downstream of the condenser.

[0011] A control method for a condensate treatment system of a refrigerated range hood includes the following steps:

[0012] S1, Power on;

[0013] S2. Turn on the cooling system;

[0014] S3, the first three-way valve opens the clean water channel;

[0015] S4. The evaporator produces condensate.

[0016] S5. Condensate flows into the clean water inlet pipe and then into the clean water area of ​​the water storage box;

[0017] S6. Turn on the water pump to draw the condensate in the water purification area to the condenser through the outlet pipe for evaporative heat dissipation.

[0018] S7. The second three-way valve opens the clean water channel, and the condensate that cannot be evaporated by the condenser flows back to the clean water area of ​​the water storage box through the clean water return pipe.

[0019] In a further preferred embodiment, the water overflowing from the clean water zone flows over the dam into the sewage zone, and then into the oil cup of the range hood through the overflow outlet. With this configuration, if the amount of untreated condensate increases, the water will overflow the dam, flow from the clean water zone to the sewage zone, and then into the oil cup through the overflow outlet.

[0020] The technical solution adopted by the present invention to solve the second technical problem mentioned above is that the control method of the condensate treatment system of the refrigeration range hood includes the following steps:

[0021] A1. Power is on;

[0022] A2. Activate the evaporator self-cleaning function;

[0023] A3. The first three-way valve opens the sewage channel;

[0024] A4. When the indoor unit fan is turned off, the evaporator begins to condense and defrost, performing self-cleaning of the evaporator and producing wastewater after cleaning.

[0025] A5. Wastewater from cleaning the evaporator flows into the wastewater area of ​​the water storage box through the wastewater inlet pipe, and then flows into the oil cup through the overflow outlet.

[0026] A6. Prompt the user to pour oil from the cup.

[0027] To achieve condenser self-cleaning, the control method for the condensate treatment system of this refrigeration range hood includes installing a level sensor in the water storage box to detect the water level. The control method includes the following steps:

[0028] B1. Power is on;

[0029] B2. Activate the condenser self-cleaning function;

[0030] B3. Turn on the cooling system;

[0031] B4. The first three-way valve opens the clean water channel;

[0032] B5. The evaporator produces condensate;

[0033] B6. Water flows into the clean water inlet pipe from the condenser, then into the clean water area of ​​the water storage box, and the water pump is turned off.

[0034] B7. The level sensor detects whether the water level in the water tank has reached the cleanable level.

[0035] If the water level in the water tank has not reached the level where it can be cleaned, return to step B6;

[0036] If the water level in the water tank reaches the washable level, proceed to step B8;

[0037] B8. The water pump is turned on to pump water;

[0038] B9. The water pump draws water from the clean water area of ​​the water storage box through the water outlet pipe to the condenser for heating and cleaning.

[0039] B10. The second three-way valve opens the sewage channel. The sewage after cleaning the condenser flows through the sewage return pipe to the sewage area of ​​the water storage box, and then flows through the overflow port to the oil cup.

[0040] B11. Prompt the user to pour oil from the cup.

[0041] To improve the cleaning effect of the condenser, a temperature sensor that can detect the condenser temperature is installed on the condenser. In step B7, it is detected whether the condenser temperature has reached the cleaning temperature. If the condenser temperature has not reached the cleaning temperature, the speed of the cooling fan is reduced and the process returns to step B6. If the condenser temperature has reached the cleaning temperature, the process proceeds to step B8.

[0042] Compared with the prior art, the advantages of the present invention are as follows: the condensate treatment system of the refrigeration range hood can clean both the evaporator and the condenser, and can clean them separately. The water storage box has a clean water area and a wastewater area. The clean water inlet pipe, clean water return pipe and water outlet pipe all lead to the clean water area of ​​the water storage box, and the wastewater inlet pipe and wastewater return pipe all lead to the wastewater area. After the wastewater from cleaning flows into the wastewater area, it overflows and can be directly discharged into the oil cup instead of being pumped out by the water pump. This will not clog the water pump and cause damage to the water pump. In addition, wastewater will not accumulate in the water storage box and will not produce odors. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the condensate treatment system of a refrigerated range hood according to an embodiment of the present invention;

[0044] Figure 2 for Figure 1 A schematic diagram of the condensate treatment system from another angle;

[0045] Figure 3 for Figure 1 The diagram shows a condensate treatment system from another different angle.

[0046] Figure 4 This is a schematic diagram of the water storage box according to an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of the normal operating water circulation system of the condensate treatment system according to an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the process when the evaporator self-cleaning system of the condensate treatment system of this invention is activated according to an embodiment of the invention.

[0049] Figure 7 This is a schematic diagram of the process when the condensate treatment system of this invention starts the condenser self-cleaning function. Detailed Implementation

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0051] like Figures 1 to 4 As shown, the condensate treatment system of the refrigerated range hood in this embodiment includes main components such as compressor 1, indoor unit module 2, outdoor unit module 3, water storage box 4, clean water inlet pipe 51, sewage inlet pipe 52, first three-way valve 53, water outlet pipe 54, clean water return pipe 55, sewage return pipe 56, second three-way valve 57, water pump 58, and liquid distributor 6.

[0052] The indoor unit module 2 includes an indoor unit housing 21, an evaporator 22, and an indoor unit fan 23. The outdoor unit module 3 includes an outdoor unit housing 31, a condenser 32, and a cooling fan 33. The indoor unit module 2 and the outdoor unit module 3 are arranged adjacent to each other. Along the airflow direction, the indoor unit fan 23 is located downstream of the evaporator 22, and the cooling fan 33 is located downstream of the condenser 32. The compressor 1, condenser 32, and evaporator 22 are connected by refrigerant piping 7. The compressor 1, condenser 32, and evaporator 22 constitute an air conditioning assembly. After the compressor 1 starts, condensate will condense on the surface of the evaporator 22, producing condensate. Its working principle is the same as that of existing air conditioning systems and will not be described in detail here.

[0053] In this embodiment, the bottom of the inner unit housing 21 has a condensate outlet, and the bottom of the outer unit housing 31 has a condensate return outlet. The inlet of the first three-way valve 53 is connected to the condensate outlet, the first outlet of the first three-way valve 53 is connected to the inlet of the purified water inlet pipe 51, the second outlet of the first three-way valve 53 is connected to the inlet of the sewage inlet pipe 52, the inlet of the second three-way valve 57 is connected to the condensate return outlet, the first outlet of the second three-way valve 57 is connected to the inlet of the purified water return pipe 55, and the second outlet of the second three-way valve 57 is connected to the inlet of the sewage return pipe 56.

[0054] The water storage box 4 is divided into a clean water zone 41 and a wastewater zone 42. The depth of the clean water zone 41 is less than the depth of the wastewater zone 42. The clean water zone 41 and the wastewater zone 42 are separated by a dam 43. The wastewater zone 42 is equipped with an overflow outlet 44. The height of the dam 43 is higher than the height of the overflow outlet 44 and lower than the edge height of the water storage box 4, effectively preventing the clean water and wastewater from mixing and facilitating the smooth flow of wastewater. The outlet ends of the clean water inlet pipe 51 and the clean water return pipe 55 are both connected to the clean water zone 41. The outlet ends of the wastewater inlet pipe 52 and the wastewater return pipe 56 are both connected to the wastewater zone 42. The water in the clean water zone 41 is transported to the condenser 32 through the outlet pipe 54 and the water pump 58. In order to achieve uniform liquid distribution, a liquid distributor 6 is installed on the top of the condenser 32 to distribute liquid to the condenser 32, and the outlet of the water outlet pipe 54 is connected to the inlet of the liquid distributor 6.

[0055] like Figure 5 As shown, the control method for the condensate treatment system of this refrigerated range hood includes the following steps:

[0056] S1, Power on;

[0057] S2. Turn on the cooling system;

[0058] S3, the first three-way valve 53 opens the clean water channel;

[0059] S4, Evaporator 22 produces condensate;

[0060] S5. Condensate flows into the clean water inlet pipe 51 and then into the clean water area 41 of the water storage box 4.

[0061] S6. Turn on the water pump 58 and pump the condensate in the clean water zone 41 to the condenser 32 through the water outlet pipe 54 for evaporative heat dissipation.

[0062] S7. The second three-way valve 57 opens the clean water channel, and the condensate that cannot be evaporated by the condenser 32 flows back to the clean water area 41 of the water storage box 4 through the clean water return pipe.

[0063] Furthermore, the water overflowing from the clean water zone 41 flows over the dam 43 into the sewage zone 42, and then flows into the oil cup of the range hood through the overflow outlet 44.

[0064] The above process describes the condensate circulation process during normal operation of the refrigeration system.

[0065] like Figure 6 As shown, when the system activates the evaporator self-cleaning function, the control method for the condensate treatment system of this refrigeration range hood includes the following steps:

[0066] A1. Power is on;

[0067] A2. Turn on the evaporator 22 self-cleaning function;

[0068] A3. The first three-way valve 53 opens the sewage channel;

[0069] A4. When the indoor unit fan 23 is turned off, the evaporator 22 begins to condense and defrost, performing self-cleaning of the evaporator 22 and generating clean wastewater.

[0070] A5. Wastewater after cleaning evaporator 22 flows into wastewater area 42 of water storage box 4 through wastewater inlet pipe 52, and then into oil cup through overflow outlet 44.

[0071] A6. Prompt the user to pour oil from the cup.

[0072] like Figure 7 As shown, a level sensor (not shown) is installed in the water storage box 4 to detect the water level. When the system activates the condenser self-cleaning function, the control method of the condensate treatment system of this refrigeration range hood includes the following steps:

[0073] B1. Power is on;

[0074] B2. Activate condenser 32 self-cleaning function;

[0075] B3. Turn on the cooling system;

[0076] B4. The first three-way valve 53 opens the clean water channel;

[0077] B5. Evaporator 22 produces condensate;

[0078] B6. The water from the condenser 32 flows into the clean water inlet pipe 51, and then into the clean water area 41 of the water storage box 4. The water pump 58 is turned off.

[0079] B7. The level sensor detects whether the water level in the water tank has reached the cleanable level.

[0080] If the water level in the water tank has not reached the level where it can be cleaned, return to step B6;

[0081] If the water level in the water tank reaches the washable level, proceed to step B8;

[0082] B8, Water pump 58 is turned on to pump water;

[0083] B9. Water pump 58 draws water from water storage box 4 and clean water area 41 through water outlet pipe 54 to condenser 32 for heating and cleaning.

[0084] B10, the second three-way valve 57 opens the sewage channel, and the sewage after cleaning the condenser 32 flows through the sewage return pipe 56 to the sewage area 42 of the water storage box 4, and then flows through the overflow port 44 to the oil cup;

[0085] B11. Prompt the user to pour oil from the cup.

[0086] In addition, a temperature sensor (not shown in the figure) that can detect the temperature of the condenser 32 is installed on the condenser 32. In step B7, it is detected whether the temperature of the condenser 32 has reached the cleaning temperature. If the temperature of the condenser 32 has not reached the cleaning temperature, the speed of the cooling fan 33 is reduced and the process returns to step B6. If the temperature of the condenser 32 has reached the cleaning temperature, the process proceeds to step B8.

[0087] As can be seen from the above control method, the condensate treatment system of this embodiment can clean the evaporator 22 alone, or the condenser 32 alone, or the evaporator 22 and the condenser 32 can be cleaned at the same time. When the wastewater generated after cleaning flows back to the water storage box 4, it will not mix with the clean water in the water storage box 4. On the one hand, it will not clog the water pump 58 and cause damage to the water pump 58, and on the other hand, it will also prevent the water storage box 4 from producing odors.

[0088] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A condensate treatment system for a refrigerated range hood, comprising a compressor (1), an indoor unit module (2), an outdoor unit module (3), and a water storage box (4), wherein the indoor unit module (2) comprises an indoor unit housing (21), an evaporator (22), and an indoor unit fan (23), and the outdoor unit module (3) comprises an outdoor unit housing (31), a condenser (32), and a cooling fan (33), wherein the compressor (1), the condenser (32), and the evaporator (22) are connected by a refrigerant pipeline (7), wherein a condensate outlet is provided at the bottom of the indoor unit housing (21), and a condensate return outlet is provided at the bottom of the outdoor unit housing (31), characterized in that: It also includes a clean water inlet pipe (51), a sewage inlet pipe (52), a first three-way valve (53), an outlet pipe (54), a clean water return pipe (55), a sewage return pipe (56), and a second three-way valve (57). The inlet of the first three-way valve (53) is connected to the condensate outlet, the first outlet of the first three-way valve (53) is connected to the inlet of the clean water inlet pipe (51), the second outlet of the first three-way valve (53) is connected to the inlet of the sewage inlet pipe (52), the inlet of the second three-way valve (57) is connected to the condensate return outlet, the first outlet of the second three-way valve (57) is connected to the inlet of the clean water return pipe (55), and the second outlet of the second three-way valve (57) is connected to the inlet of the sewage return pipe (56). The water storage box (4) is divided into a clean water area (41) and a sewage area (42). The outlet of the clean water inlet pipe (51) and the outlet of the clean water return pipe (55) are both connected to the clean water area (41). The outlet of the sewage inlet pipe (52) and the outlet of the sewage return pipe (56) are both connected to the sewage area (42). The water in the clean water area (41) is transported to the condenser (32) through the outlet pipe (54). The clean water area (41) and the sewage area (42) are separated by a water barrier (43). The sewage area (42) is provided with an overflow outlet (44). The height of the water barrier (43) is higher than the height of the overflow outlet (44). The height of the water barrier (43) is lower than the edge height of the water storage box (4).

2. The condensate treatment system of the refrigerated range hood according to claim 1, characterized in that: The depth of the clean water zone (41) is less than the depth of the sewage zone (42).

3. The condensate treatment system of the refrigerated range hood according to claim 1, characterized in that: It also includes a water pump (58), through which water in the clean water area (41) is pumped to the condenser (32) via the water pump (58) and the outlet pipe (54).

4. The condensate treatment system of the refrigerated range hood according to claim 1, characterized in that: A liquid distributor (6) capable of distributing liquid to the condenser (32) is installed on the top of the condenser (32), and the outlet of the water outlet pipe (54) is connected to the inlet of the liquid distributor (6).

5. The condensate treatment system of the refrigerated range hood according to claim 1, characterized in that: The indoor unit module (2) and the outdoor unit module (3) are arranged adjacent to each other. Along the air flow direction, the indoor unit fan (23) is located downstream of the evaporator (22), and the cooling fan (33) is located downstream of the condenser (32).

6. A control method for a condensate treatment system of a refrigerated range hood, characterized in that... The control method, applied to the condensate treatment system of claim 3, includes the following steps: S1, Power on; S2. Turn on the cooling system; S3, the first three-way valve (53) opens the clean water channel; S4, Evaporator (22) produces condensate; S5. Condensate flows into the clean water inlet pipe (51) and then into the clean water area (41) of the water storage box (4); S6. Turn on the water pump (58) and pump the condensate in the clean water area (41) to the condenser (32) through the water outlet pipe (54) for evaporative heat dissipation. S7. The second three-way valve (57) opens the clean water channel, and the condensate that cannot be evaporated by the condenser (32) flows back to the clean water area (41) of the water storage box (4) through the clean water return pipe.

7. The control method for the condensate treatment system of the refrigerated range hood according to claim 6, characterized in that: The water overflowing from the clean water area (41) flows over the dam (43) into the sewage area (42), and then flows into the oil cup of the range hood through the overflow outlet (44).

8. A control method for a condensate treatment system of a refrigerated range hood, characterized in that... This control method is applied to the condensate treatment system according to claim 1, and the control method includes the following steps: A1. Power is on; A2. Turn on the evaporator (22) self-cleaning function; A3. The first three-way valve (53) opens the sewage channel; A4. When the indoor unit fan (23) is turned off, the evaporator (22) begins to condense and defrost, and performs self-cleaning of the evaporator (22), producing clean wastewater. A5. Wastewater after cleaning the evaporator (22) flows into the wastewater area (42) of the water storage box (4) through the wastewater inlet pipe (52), and then flows into the oil cup through the overflow outlet (44). A6. Prompt the user to pour oil from the cup.

9. A control method for a condensate treatment system of a refrigerated range hood, characterized in that... The control method is applied to the condensate treatment system of claim 3, wherein a level sensor for detecting the water level in the water storage box (4) is installed in the water storage box (4), and the control method includes the following steps: B1. Power is on; B2. Turn on the condenser (32) self-cleaning function; B3. Turn on the cooling system; B4. The first three-way valve (53) opens the clean water channel; B5. The evaporator (22) produces condensate; B6. Condensate flows into the clean water inlet pipe (51) and then into the clean water area (41) of the water storage box (4), and the water pump (58) is turned off. B7. The level sensor detects whether the water level in the water tank has reached the cleanable level. If the water level in the water tank has not reached the level where it can be cleaned, return to step B6; If the water level in the water tank reaches the washable level, proceed to step B8; B8. Water pump (58) is turned on to pump water; B9. The water pump (58) draws the water in the water storage box (4) and the clean water area (41) through the water outlet pipe (54) to the condenser (32) for heating and cleaning. B10. The second three-way valve (57) opens the sewage channel. The sewage after cleaning the condenser (32) flows through the sewage return pipe (56) to the sewage area (42) of the water storage box (4), and then flows through the overflow port (44) to the oil cup. B11. Prompt the user to pour oil into the cup.

10. The control method for the condensate treatment system of the refrigerated range hood according to claim 9, characterized in that: A temperature sensor capable of detecting the temperature of the condenser (32) is installed on the condenser (32). In step B7, it is detected whether the temperature of the condenser (32) has reached the cleaning temperature. If the temperature of the condenser (32) has not reached the cleaning temperature, the speed of the cooling fan (33) is reduced and the process returns to step B6. If the temperature of the condenser (32) has reached the cleaning temperature, the process proceeds to step B8.

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