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

Abstract

According to the condensate water treatment system of the refrigeration type range hood and the control method, in a condensate water receiving box on an evaporator, water in the water receiving box is conveyed to a condenser, water flowing back from the condenser flows back to the water receiving box through a water return pipe, and the condensate water treatment system further comprises a cooling fan, a steam generator and a spraying pipe. The condenser is arranged on the upstream portion of the cooling fan, the spraying pipe is arranged in an air channel between the air outlet side of the condenser and an air inlet of the cooling fan, a steam outlet of the steam generator is communicated with an inlet of the spraying pipe, and a shutter grating with blades adjustable in opening angle is installed on the air inlet side of the condenser. According to the condensate water treatment system of the refrigeration type range hood, air conditioner condensate water is adopted to clean the condenser, external water can be heated through the steam generator to generate high-temperature steam, the high-temperature steam is sprayed out of the spraying pipe to clean the condenser, and according to different working modes, the condensate water treatment efficiency is improved. And the opening angle of the blades of the shutter grille can be adjusted, and the intelligent degree is high.

Description

Technical Field

[0001] The invention relates to an oil fume purification device, and in particular to a condensed water processing system and a control method for a 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. Some refrigeration-type range hoods install the condenser of the air conditioning component in the smoke exhaust channel. The condenser will be contaminated by oil smoke and needs to be cleaned in time. If the cleaning is not timely, the heat exchange effect will be greatly reduced, thereby affecting the energy efficiency of the air conditioner and increasing energy consumption. In addition, when working in the refrigeration mode, the condenser also needs to be cooled by the range fume fan. Although some refrigeration range hoods install the condenser outside the exhaust channel, dirt will remain on the surface of the condenser after long-term operation. In order to ensure the heat exchange effect, the condenser needs to be cleaned. At present, air conditioning condensate water is usually used to clean and dissipate heat, such as patent number 202220040537.0 (authorization public number CN 217685714 U) disclosed in the Chinese utility model patent "A water pump flow control system and air-conditioning range hood", when working in 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 use of 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 use. This air-conditioning range hood can only use air-conditioning condensed water to clean and dissipate heat for the condenser, and it cannot be cleaned when the amount of condensed water is small, which 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 refrigeration range hood with two cleaning modes, namely, self-cleaning by adding water and self-cleaning without adding water, in view of the above-mentioned existing technical 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 water treatment system of a refrigeration-type range hood, including a condenser, an evaporator and a water receiving box, the condensate condensed on the evaporator can flow into the water receiving box, the water in the water receiving box can be transported to the condenser, and the unconsumed water from the condenser can flow back to the water receiving box, characterized in that: it also includes a heat dissipation fan, a steam generator and a spray pipe, along the air flow direction, the condenser is arranged upstream of the heat dissipation fan, the spray pipe is arranged in the air duct between the air outlet side of the condenser and the air inlet of the heat dissipation fan, the steam outlet of the steam generator is connected to the inlet of the spray pipe, and the air inlet side of the condenser is installed with a louver grille with adjustable blade angle. .

[0006] In order to smoothly install the condenser, the cooling fan and the steam generator, a cooling shell is included, on which the condenser and the cooling fan are mounted, and the steam generator is mounted outside the cooling shell, and the water inlet of the steam generator is connected to an external water tank.

[0007] The condenser can be arranged in a variety of ways. Preferably, the condenser is arranged vertically. Correspondingly, the louver grille is set vertically, and the blades of the louver grille can swing to a horizontal position or a vertical position or any angle between the horizontal position and the vertical position.

[0008] In order to realize automatic control of the swing angle of the blades, preferably, a controller is also included, the louver grille is an electric louver grille, when the refrigeration range hood is turned off, the controller controls the blades of the louver grille to swing to a vertical position, when the refrigeration range hood is working, the controller controls the blades of the louver grille to swing to a horizontal position, and when the spray pipe is working, the controller controls the blades of the louver grille to swing to an angle between the horizontal position and the vertical position. In this way, when the refrigeration range hood is not working, the electric louver grille is 90° to block dust and organisms from entering the condenser; when the refrigeration range hood is working, the electric louver grille is 180° to not obstruct the air duct and increase the air intake; when an external water source is used for steam cleaning, some high-temperature steam ejected from the steam generator will pass through the condenser, and at this time, the electric louver grille is at an angle of about 70° to intercept these high-temperature steam.

[0009] Further preferably, the controller can also control the working status of the steam generator and the heat dissipation fan.

[0010] In order to quickly increase the water temperature in the water receiving box, an auxiliary heating device for heating the water in the water receiving box is installed in the water receiving box.

[0011] In order to realize the recycling of condensed water, the condensed water condensed on the evaporator flows into the water receiving box through the water inlet pipe, the water in the water receiving box is transported to the condenser through the water pump and the water outlet pipe, and the unconsumed water in the condenser flows back to the water receiving box through the return pipe.

[0012] In order to evenly distribute the condensed water on the condenser to improve its heat exchange and cleaning effects, a liquid distributor capable of distributing liquid to the condenser is installed on the top of the condenser, and the water outlet of the water outlet pipe is connected to the water inlet of the liquid distributor.

[0013] In order to smoothly discharge the heat of the condenser and part of the high-temperature steam generated during steam cleaning with an external water source, the refrigeration type range hood includes a range hood fan, and the air outlet of the heat dissipation fan is fluidly connected to the air inlet of the range hood fan.

[0014] Further preferably, the refrigeration type range hood comprises a compressor, an evaporator fan and an air outlet module, the compressor, condenser and evaporator are connected via a refrigerant pipeline, and the air outlet of the evaporator fan is fluidically connected to the air inlet of the air outlet module.

[0015] The technical solution adopted by the present invention to solve the above second technical problem is: the control method is applied to the condensate treatment system according to claim 6, and the control method comprises the following steps:

[0016] S1. Turn on the power supply, and select to start the water-adding self-cleaning module or the non-water-adding self-cleaning mode. In the water-adding self-cleaning mode, proceed to step S2, and in the non-water-adding self-cleaning mode, proceed to step S3;

[0017] S2, turn on the steam generator, open the shutter grille at an angle α, where 50°<α<80°, and turn off the steam generator after running for t1 time. Then, turn off the cooling fan after running for t2 time. Self-cleaning is completed, and the shutter grille opening angle is adjusted to 90°. Then enter step S8;

[0018] S3, first determine whether the water level in the water receiving box has reached the washable water level;

[0019] If yes, the condenser self-cleaning is started, the shutter grille opening angle is adjusted to 180°, and then the process goes to step S4;

[0020] If not, the compressor starts, the evaporator produces condensed water, and then re-judges whether the water level for cleaning has been reached;

[0021] S4, detecting whether the water temperature T in the water receiving box is within the set washable temperature range [T1, T2],

[0022] If T1≤T≤T2, proceed to step S5;

[0023] If T>T2, go to step S6;

[0024] If T<T1, go to step S7;

[0025] S5, the speed of the cooling fan remains unchanged, the auxiliary heating of the water box is turned off, the self-cleaning is completed, and the opening angle of the louver grille is adjusted to 90°; then proceed to step S8;

[0026] S6, increase the speed of the cooling fan, turn off the auxiliary heating of the water box, and then return to step S4;

[0027] S7, reduce the speed of the cooling fan, turn on the auxiliary heating of the water box, and then return to step S4;

[0028] S8. Power off.

[0029] More preferably, in step S2, t1=3-8s, t2=3-8s, and before the end of self-cleaning, one opening and closing of the steam generator and one opening and closing of the cooling fan are regarded as one cycle, and a total of 3-10 cycles are performed.

[0030] Compared with the prior art, the advantages of the present invention are: in addition to using air-conditioning condensate to clean the condenser, the condensate treatment system of the refrigeration type range hood can also heat external water through a steam generator to generate high-temperature water vapor. After the high-temperature water vapor is sprayed out from the spray pipe, the condenser is cleaned. In addition, according to different working modes, the blade angle of the louver grille on the air inlet side of the condenser can be adjusted. When the refrigeration range hood is not working, the blades of the louver grille are swung to a vertical position to block dust and organisms from entering the condenser. When the refrigeration range hood is working, the blades are swung to a horizontal position so as not to obstruct the air duct and increase the air intake. When high-temperature steam is used for cleaning, part of the high-temperature steam sprayed by the steam generator passes through the condenser. The blades are swung to an inclined position to intercept the high-temperature steam and reduce the amount of high-temperature steam discharged to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of a refrigeration type range hood according to an embodiment of the present invention;

[0032] Figure 2 It is a structural schematic diagram of a condensate water treatment system according to an embodiment of the present invention;

[0033] Figure 3 It is a structural schematic diagram of a heat dissipation module according to an embodiment of the present invention;

[0034] Figure 4 for Figure 3 Schematic diagram of the structure in the middle AA direction (the blades are opened to the 90° position);

[0035] Figure 5for Figure 3 The schematic diagram of the structure of the heat dissipation module shown (the blades are opened to the 70° position);

[0036] Figure 6 for Figure 3 The schematic diagram of the structure of the heat dissipation module shown (the blades are opened to the 180° position);

[0037] Figure 7 A schematic diagram of the structure of a spray pipe according to an embodiment of the present invention;

[0038] Figure 8 Flow chart of a control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below with reference to the accompanying drawings.

[0040] like Figures 1 to 6 As shown, the condensate treatment system of the refrigeration range hood of this embodiment includes a condenser 1, an evaporator 2 and a water receiving box 3. The condensate condensed on the evaporator 2 flows into the water receiving box 3 through the water inlet pipe 10. The water in the water receiving box 3 is transported to the condenser 1 through the water pump 11 and the water outlet pipe 12. A liquid distributor 14 capable of distributing liquid to the condenser 1 is installed on the top of the condenser 1. The water outlet of the water outlet pipe 12 is connected to the water inlet of the liquid distributor 14. The unconsumed water of the condenser 1 flows back to the water receiving box 3 through the return pipe 13 to realize the recycling of the condensate.

[0041] The condenser 1 and the heat dissipation fan 4 are installed on the heat dissipation housing 9. Along the air flow direction, the condenser 1 is arranged upstream of the heat dissipation fan 4. The heat dissipation fan 4 adopts a centrifugal fan. A steam generator 5 is installed outside the heat dissipation housing 9. The water inlet of the steam generator 5 is connected to a water tank. The steam generator 5 is used to generate steam. A spray pipe 6 is installed in the air duct 7 between the air outlet side of the condenser 1 and the air inlet of the heat dissipation fan 4. The spray pipe 6 is installed on the heat dissipation housing 9 through a mounting bracket 60. Figure 7As shown, spray ports 61 are spaced apart on the wall of the spray pipe 6, and the spraying direction of the spray ports 61 is toward the condenser 1. The steam outlet of the steam generator 5 is connected to the inlet of the spray pipe 6, and the high-temperature steam generated by the steam generator 5 enters the spray pipe 6 and sprays the condenser 1 through the spray ports 61 to clean the condenser 1. It should be noted that the working state of the steam generator 5 and the heat dissipation fan 4 needs to be controlled by the controller. When cleaning with steam, the steam generator 5 is turned on for a few seconds and then turned off, and then the heat dissipation fan 4 is turned on for a few seconds and then turned off. In this way, the condenser 1 is cleaned with steam first to prevent the steam from being sucked away by the heat dissipation fan 4. After the steam generator 5 is turned off for a few seconds, the heat dissipation fan 4 is turned on at this time, and the heat dissipation fan 4 can take away the dirt after cleaning. This cycle is repeated many times to achieve the purpose of cleaning the condenser 1. In addition, since the air outlet of the heat dissipation fan 4 is fluidly connected with the air inlet of the fume suction fan 15, the dirt after cleaning can be discharged outward through the fume suction fan 15.

[0042] The condenser 1 of this embodiment is arranged vertically, and a louver grille 8 is installed on the air inlet side of the condenser 1. The louver grille 8 is also arranged vertically. The louver grille 8 is an electric louver grille, and the opening angle of its blades 81 is controlled by a controller, and can be swung to a horizontal position or a vertical position or any angle between the horizontal position and the vertical position. Figure 4 As shown, when the refrigeration range hood is turned off, the blade 81 swings to a vertical position, i.e., 90°, at which time, dust and organisms can be blocked from entering the condenser 1. Figure 5 As shown, when the refrigeration range hood is in operation, the controller controls the blades 81 of the louver grille 8 to swing to a horizontal position, i.e., 180°. Figure 6 As shown, when the spray pipe 6 is in working state, the controller controls the blades 81 of the louver grille 8 to swing to an angle between the horizontal position and the vertical position, such as in the present embodiment, to 50°<α<80°, preferably 70°. At this time, the blades 81 can intercept the high-temperature steam to prevent part of the high-temperature steam from escaping out through the condenser 1 and affecting the cleaning effect.

[0043] Since the temperature of the condensed water in the water receiving box 3 is relatively low, in order to improve the cleaning effect, an auxiliary heating device is installed in the water receiving box 3 to heat the water in the water receiving box 3. When cleaning in the internal circulation mode, the condenser 1 can be cleaned after the water temperature in the water receiving box 3 reaches a certain value. If the water temperature reaches the set value, the auxiliary heating device can be turned off and the speed of the cooling fan 4 can be increased. If the water temperature does not reach the set value, the auxiliary heating device is turned on and the speed of the cooling fan 4 is reduced.

[0044] In addition, the refrigeration range hood of this embodiment includes a compressor 16, an evaporator fan 17 and an air outlet module 18. The compressor 16, the condenser 1 and the evaporator 2 are connected through a refrigerant pipeline 19. The compressor 16, the condenser 1 and the evaporator 2 constitute an air conditioning component. After the compressor 16 is started, condensed water will condense on the surface of the evaporator 2. Its working principle is the existing conventional design and will not be described in detail. The air outlet of the evaporator fan 17 is fluidly connected to the air inlet of the air outlet module 18. When working in the refrigeration mode, cold air is blown out through the starting module 18.

[0045] like Figure 8 As shown, the control method of the condensate treatment system includes the following steps:

[0046] S1. Turn on the power supply, and select to start the water-adding self-cleaning module or the non-water-adding self-cleaning mode. In the water-adding self-cleaning mode, proceed to step S2, and in the non-water-adding self-cleaning mode, proceed to step S3;

[0047] S2, turn on the steam generator 5, the electric louver grille 8 opens at an angle α, where 50°<α<80°, the steam generator 5 runs for t1 time and then turns off, then the cooling fan 4 runs for t2 time and then turns off, the self-cleaning ends, and the opening angle of the electric louver grille 8 is adjusted to 90°; then enter step S8;

[0048] S3, first determine whether the water level of the water receiving box 3 reaches the washable water level;

[0049] If yes, the condenser 1 is turned on for self-cleaning, the electric shutter grille 8 is opened at an angle of 180°, and then the process proceeds to step S4;

[0050] If not, the compressor 16 is started, the evaporator 2 produces condensed water, and then it is re-determined whether the washable water level is reached;

[0051] S4, detecting whether the water temperature T in the water receiving box 3 is within the set washable temperature range [T1, T2],

[0052] If T1≤T≤T2, proceed to step S5;

[0053] If T>T2, go to step S6;

[0054] If T<T1, go to step S7;

[0055] S5, the speed of the cooling fan 4 remains unchanged, the auxiliary heating of the water box is turned off, the self-cleaning is completed, and the opening angle of the electric shutter grille 8 is adjusted to 90°; then enter step S8;

[0056] S6, increase the speed of the cooling fan 4, turn off the auxiliary heating of the water box, and then return to step S4;

[0057] S7, reduce the speed of the cooling fan 4, turn on the auxiliary heating of the water box, and then return to step S4;

[0058] S8. Power off.

[0059] In step S2, in step S2, t1=3-8s, t2=3-8s, and before the end of self-cleaning, one opening and closing of the steam generator 5 and one opening and closing of the heat dissipation fan 4 are regarded as one cycle, and a total of 3-10 cycles are performed. Preferably, t1 can be set to about 5 seconds, t2 can also be set to about 5 seconds, and the number of cycles can be set to about 6 times to achieve the purpose of cleaning the condenser 1. The specific principle has been described in detail above and will not be described here.

[0060] 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.

[0061] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts, which are collectively referred to as the first part and the second part respectively below, that is, fluid gas, liquid or a mixture of the two can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A condensate water treatment system for a refrigeration-type range hood, comprising a condenser (1), an evaporator (2) and a water receiving box (3), wherein condensate water condensed on the evaporator (2) can flow into the water receiving box (3), water in the water receiving box (3) can be transported to the condenser (1), and unconsumed water from the condenser (1) can flow back into the water receiving box (3), characterized in that: The invention also comprises a heat dissipation fan (4), a steam generator (5) and a spray pipe (6); the condenser (1) is arranged upstream of the heat dissipation fan (4) along the air flow direction; the spray pipe (6) is arranged in an air duct (7) between the air outlet side of the condenser (1) and the air inlet of the heat dissipation fan (4); the steam outlet of the steam generator (5) is connected to the inlet of the spray pipe (6); and a louver grille (8) capable of adjusting the opening angle of blades (81) is installed on the air inlet side of the condenser (1).

2. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: It comprises a heat dissipation shell (9), the condenser (1) and the heat dissipation fan (4) are mounted on the heat dissipation shell (9), the steam generator (5) is mounted outside the heat dissipation shell (9), and the water inlet of the steam generator (5) is connected to an external water tank.

3. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The condenser (1) is arranged vertically, and correspondingly, the louver grille (8) is arranged vertically, and the blades (81) of the louver grille (8) can swing to a horizontal position or a vertical position or any angle between the horizontal position and the vertical position.

4. The condensate treatment system for a refrigeration range hood according to claim 3, characterized in that: The invention also comprises a controller, wherein the louver grille (8) is a louver grille (8), and when the refrigeration range hood is turned off, the controller controls the blades (81) of the louver grille (8) to swing to a vertical position, and when the refrigeration range hood is in operation, the controller controls the blades (81) of the louver grille (8) to swing to a horizontal position, and when the spray pipe (6) is in operation, the controller controls the blades (81) of the louver grille (8) to swing to an angle between the horizontal position and the vertical position.

5. The condensate treatment system for a refrigeration range hood according to claim 4, characterized in that: The controller can also control the working states of the steam generator (5) and the heat dissipation fan (4).

6. The condensate treatment system for a refrigeration range hood according to claim 5, characterized in that: An auxiliary heating device for heating the water in the water receiving box (3) is installed in the water receiving box (3).

7. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: Condensed water condensed on the evaporator (2) flows into the water receiving box (3) through the water inlet pipe (10), the water in the water receiving box (3) is transported to the condenser (1) through the water pump (11) and the water outlet pipe (12), and the unconsumed water in the condenser (1) flows back to the water receiving box (3) through the return pipe (13).

8. The condensate treatment system for a refrigeration range hood according to claim 7, characterized in that: A liquid distributor (14) capable of distributing liquid to the condenser (1) is installed on the top of the condenser (1), and the water outlet of the water outlet pipe (12) is connected to the water inlet of the liquid distributor (14).

9. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The refrigeration-type range hood comprises a range hood exhaust fan (15), and the air outlet of the heat dissipation fan (4) is fluidically connected to the air inlet of the range hood exhaust fan (15).

10. The condensate treatment system for a refrigeration range hood according to claim 1, characterized in that: The refrigeration-type range hood comprises a compressor (16), an evaporator fan (17) and an air outlet module (18); the compressor (16), the condenser (1) and the evaporator (2) are connected via a refrigerant pipeline (19); the air outlet of the evaporator fan (17) is fluidically connected to the air inlet of the air outlet module (18).

11. A control method for a condensate treatment system of a refrigeration range hood, characterized in that: The control method is applied to the condensate treatment system according to claim 6, and the control method comprises the following steps: S1. Turn on the power supply, and select to start the water-adding self-cleaning module or the non-water-adding self-cleaning mode. In the water-adding self-cleaning mode, proceed to step S2, and in the non-water-adding self-cleaning mode, proceed to step S3; S2, the steam generator (5) is turned on, the shutter grille (8) is opened to an angle α, where 50°<α<80°, the steam generator (5) is turned off after running for a time t1, then the cooling fan (4) is turned off after running for a time t2, the self-cleaning is finished, and the shutter grille (8) is opened at an angle of 90°; then the process proceeds to step S8; S3, first determine whether the water level in the water receiving box (3) has reached a washable water level; If yes, the condenser (1) is turned on for self-cleaning, the shutter grille (8) is opened at an angle of 180°, and then the process proceeds to step S4; If not, the compressor (16) is started, the evaporator (2) produces condensed water, and then it is re-determined whether the water level for washing is reached; S4, detecting whether the water temperature T in the water receiving box (3) is within the set washable temperature range [T1, T2], If T1≤T≤T2, proceed to step S5; If T>T2, go to step S6; If T<T1, go to step S7; S5, the speed of the cooling fan (4) remains unchanged, the auxiliary heating of the water box is turned off, the self-cleaning is completed, and the opening angle of the louver grille (8) is adjusted to 90°; then the process proceeds to step S8; S6, increasing the speed of the cooling fan (4), turning off the auxiliary heating of the water box, and then returning to step S4; S7, reducing the speed of the cooling fan (4), turning on the auxiliary heating of the water box, and then returning to step S4; S8. Power off.

12. The control method of the condensate treatment system according to claim 11, characterized in that: In step S2, t1 = 3 to 8 s, t2 = 3 to 8 s, and before the end of self-cleaning, one opening and closing of the steam generator (5) and one opening and closing of the heat dissipation fan (4) are regarded as one cycle, and a total of 3 to 10 cycles are performed.

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