Refrigeration type range hood and control method thereof

Abstract

According to the refrigeration type range hood and the control method thereof, a compressor, a condenser, an evaporator and a cooling fan are installed outside a fan frame of the refrigeration type range hood, the cooling fan conducts cooling on the condenser, and an air outlet of the cooling fan is in fluid communication with the interior of a volute of an oil smoke suction fan; condensate water condensed on the evaporator is collected, conveyed to the cooling fan through a first water way and conveyed to the condenser through a second water way, a first flow regulating valve is installed on the first water way, and a second flow regulating valve is installed on the second water way. When the refrigeration type range hood works in a refrigeration mode, condensed water is output in two ways, one way is conveyed to the condenser to dissipate heat of the condenser and improve the energy efficiency of an air conditioner, the other way is conveyed to the heat dissipation fan, the heat dissipation fan atomizes the condensed water and then blows the condensed water into the oil smoke suction fan to clean a volute and an impeller, and therefore the heat dissipation efficiency of the oil smoke suction fan is improved. And the flow distribution of the condensate water is realized by adjusting the first flow adjusting valve and the second flow adjusting valve.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a refrigeration range hood and a control method thereof. Background Art

[0002] Various refrigeration-type range hoods are disclosed in the prior art. On the basis of the range hood platform, an air conditioning component is added. The compressor, condenser and evaporator are connected through a refrigerant pipeline. The refrigeration-type range hood can realize all the functions of the range hood and the function of the air conditioner. At present, the condensed water of the refrigeration range hoods on the market is often discharged externally by drilling holes in the wall or introducing the condensed water into the sewer pipe through a pipe for external discharge. The condensed water does not have the ability to process the condensed water independently and cannot consume the condensed water generated during refrigeration. In addition, during the daily use of the refrigeration range hood, a large amount of grease will remain on the volute and impeller. After a long period of air drying and solidification, the grease will form a hard grease layer on the volute and impeller, which is very difficult to clean.

[0003] At present, traditional range hoods on the market often do not have a cleaning function. Even if a cleaning function is added, it is only to simply add a water pump and a heating rod to heat and spray the water added from the outside for cleaning. Additional parts need to be added, which reduces the reliability of the whole machine. At the same time, it is necessary to add a water source from the outside, which increases the complexity. Although, the prior art also discloses a range hood that uses controlled condensed water to clean the volute, such as the "A Kind of Air-conditioning Range Hood" disclosed in the Chinese Utility Model Patent No. 202220018984.6 (Authorization Announcement No. CN 217004584 U), the range hood has a water collection box for collecting condensed water condensed on the surface of the evaporator in the casing, and a steam generator is installed inside the casing. The water collection box is connected to the water inlet of the steam generator through a water outlet pipe, and the steam outlet of the steam generator is connected to the air duct inside the range hood fan. The condensed water from the air conditioner evaporates through the steam generator and enters the interior of the range hood fan. The high-temperature steam passes through the fan impeller to clean the impeller. Although the air-conditioned range hood uses the condensed water to clean the fan impeller, the condensed water needs to be heated by the steam generator inside the casing. This not only has a complex structure but also increases the cost. The heat generated by the condenser when the air conditioner is working is not effectively utilized. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a refrigeration range hood that can utilize the heat and condensed water of the condenser to clean the fan and utilize the condensed water to cool the condenser, and can realize the condensed water flow distribution, in response to the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a control method for a refrigeration range hood with a high degree of intelligence, which can realize condensed water flow distribution in different working modes, in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the refrigeration type range hood comprises a casing and a fan frame installed inside the casing, a range hood fan is installed inside the fan frame, a compressor, a condenser and an evaporator are installed outside the fan frame, the compressor, condenser and evaporator are connected through a refrigerant pipeline, and is characterized in that: a heat dissipation fan for dissipating heat from the condenser is installed outside the fan frame, and an air outlet of the heat dissipation fan is fluidly connected with the inside of the volute of the range hood fan, condensed water condensed on the evaporator is collected and transported to the heat dissipation fan through a first water channel, and then transported to the condenser through a second water channel, a first flow regulating valve is installed on the first water channel, and a second flow regulating valve is installed on the second water channel.

[0007] In order to allow the hot air blown out by the heat dissipation fan to enter the interior of the volute, a ventilation hole is opened on the volute ring wall of the range fumes exhaust fan, and the air outlet of the heat dissipation fan faces the ventilation hole.

[0008] Further preferably, an air guide plate for guiding hot air blown out by the heat dissipation fan into the interior of the volute is installed at the ventilation hole.

[0009] In order to transport condensed water to the first waterway and the second waterway, a water receiving box for collecting condensed water is installed outside the fan frame, and a water outlet pipe is connected to the water receiving box, and the outlet end of the water outlet pipe is connected to the first waterway and the second waterway.

[0010] In order to detect the water level in the water receiving box, a water level sensor is installed in the water receiving box.

[0011] In order to smoothly transport the condensed water to the condenser and the heat dissipation fan, a water pump is installed in the water receiving box, and the condensed water in the water receiving box can be transported to the condenser and the inside of the heat dissipation fan through the water pump.

[0012] In order to allow the unconsumed condensed water of the condenser to flow back into the water receiving box, a return water box is installed at the bottom of the condenser, and the outlet of the return water box is connected to the water receiving box through a return water pipe.

[0013] In order to blow cold air out of the casing, an internal fan matched with the evaporator is installed outside the fan frame, an air-conditioning outlet is opened on the casing, and the air outlet of the internal fan is fluidically connected with the air-conditioning outlet.

[0014] The compressor can be installed in a plurality of different positions. Preferably, the compressor is arranged below the evaporator and the indoor fan.

[0015] Further preferably, the range fumes exhaust fan is a centrifugal fan.

[0016] The technical solution adopted by the present invention to solve the above second technical problem is that the control method of the refrigeration type range hood first turns on the power, then determines the working mode, enters the first branch A when the range hood is turned on and the refrigeration mode is turned off, enters the second branch B when the range hood is turned on and the refrigeration mode is turned on, and enters the third branch C when the range hood is turned off and the refrigeration mode is turned on;

[0017] The first branch A comprises the following steps:

[0018] A1. The water pump remains closed;

[0019] A2, power off;

[0020] The second branch B comprises the following steps:

[0021] B1. Determine whether to turn on the cleaning function;

[0022] If the cleaning function is turned on, go to step B2;

[0023] If the cleaning function is turned off, go to step B3;

[0024] B2, the first flow regulating valve is adjusted to a fully open state, the second flow regulating valve remains closed, and then the power is turned off;

[0025] B3, the second flow regulating valve is adjusted to a fully open state, the first flow regulating valve remains closed, and then proceeds to step B4;

[0026] B4. Check whether the water level in the water collection box exceeds the warning water level;

[0027] If the water level exceeds the warning level, the first flow regulating valve is adjusted to a partially open state, and then the process returns to step B4 to continue water level determination;

[0028] If the water level does not exceed the warning level, return to step B3;

[0029] The third branch C comprises the following steps:

[0030] C1. The impeller of the range fumes exhaust fan rotates at a low speed;

[0031] C2, determine whether to turn on the cleaning function;

[0032] If the cleaning function is turned on, go to step C3;

[0033] If the cleaning function is turned off, go to step C4;

[0034] C3. The impeller of the range hood fan is adjusted to rotate at high speed, the first flow regulating valve is adjusted to be fully open, the second flow regulating valve remains closed, and then the power is turned off;

[0035] C4. The impeller of the range fumes exhaust fan keeps rotating at a low speed;

[0036] C5, the second flow regulating valve is adjusted to a fully open state, the first flow regulating valve remains closed, and then enters step C6;

[0037] C6. Check whether the water level in the water collection box exceeds the warning water level;

[0038] If the water level exceeds the warning level, the first flow regulating valve is adjusted to a partially open state, and then the process returns to step C6 to continue water level determination;

[0039] If the water level does not exceed the warning level, the process returns to step C4.

[0040] Compared with the prior art, the advantages of the present invention are: when the refrigeration type range hood works in the refrigeration mode, the generated condensed water is output in two ways, one way is transported to the condenser to dissipate the heat of the condenser, thereby improving the air conditioning energy efficiency and saving energy and being environmentally friendly, and the other way is transported to the heat dissipation fan. The heat dissipation fan atomizes the condensed water and blows it into the interior of the range hood fan to clean the volute and impeller. Without the need for external assistance, the volute and impeller cleaning process can be completed independently, and the condensed water can be discharged externally without the need to add additional drain pipes, etc. Moreover, in different working modes, the flow distribution of condensed water can be achieved by adjusting the first flow regulating valve and the second flow regulating valve, with a high degree of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0042] Figure 2 is a side view of a range hood according to an embodiment of the present invention;

[0043] Figure 3 A connection diagram of an air conditioning assembly according to an embodiment of the present invention;

[0044] Figure 4 This is a logic control diagram of the control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings.

[0046] like Figures 1 to 3As shown, the refrigeration-type range hood of this embodiment includes a housing 1 and a fan frame 2 installed inside the housing 1, and a range hood fan 3 is installed inside the fan frame 2. The range hood fan 3 is a centrifugal fan. A compressor 4, a condenser 5 and an evaporator 6 are installed outside the fan frame 2. The compressor 4, the condenser 5 and the evaporator 6 are connected through a refrigerant pipeline 7. The compressor 4, the condenser 5 and the evaporator 6 constitute an air conditioning component, and its specific working principle is the same as that of the existing air conditioner, which will not be described in detail here.

[0047] A heat dissipation fan 8 and an indoor fan 18 are also installed outside the fan frame 2. The heat dissipation fan 8 is used to dissipate heat from the condenser 5. The heat dissipation fan 8 and the condenser 5 constitute a heat dissipation module. A ventilation hole 31 is opened on the volute ring wall of the range hood fan 3. The ventilation hole 31 is close to the volute tongue 33 of the fan. The air outlet of the heat dissipation fan 8 faces the ventilation hole 31. A wind guide plate 32 is installed at the ventilation hole 31 to guide the hot air blown by the heat dissipation fan 8 into the inside of the volute, that is, the air outlet of the heat dissipation fan 8 is fluidly connected with the inside of the volute of the range hood fan 3. The indoor fan 18 cooperates with the evaporator 6. The indoor fan 18 and the evaporator 6 constitute an indoor module. The indoor fan 18 that cooperates with the evaporator 6 is installed outside the fan frame 2. An air conditioning outlet is opened on the casing 1. The air outlet of the indoor fan 18 is fluidly connected with the air conditioning outlet. The heat dissipation module of this embodiment is installed on the top of the fan frame 2, the indoor unit module is installed on the right side of the heat dissipation module, and the compressor 4 is installed below the indoor unit module.

[0048] A water receiving box 13 is installed below the internal unit module. The water receiving box 13 is used to collect condensed water condensed on the surface of the evaporator 6. A water level sensor (not shown), a water outlet pipe 14, and a water pump 15 are installed in the water receiving box 13. The water level sensor is used to detect the water level of the water receiving box 13. The outlet end of the water outlet pipe 14 is connected to the first water path 91 and the second water path 92. The water pump 15 is used to transport the condensed water in the water receiving box 13 to the first water path 91 and the second water path 92. The condensed water is transported to the heat dissipation fan 8 through the first water path 91 and to the condenser 5 through the second water path 92. A first flow regulating valve 11 is installed in the first water path 91, and a second flow regulating valve 12 is installed in the second water path 92. By adjusting the first flow regulating valve 11, the amount of condensed water entering the heat dissipation fan 8 can be adjusted, and by adjusting the second flow regulating valve 12, the amount of condensed water flowing to the condenser 5 can be adjusted. In order to recycle the condensed water, in this embodiment, a return water box 16 is installed at the bottom of the condenser 5, and the outlet of the return water box 16 is connected to the water receiving box 13 through a return water pipe 17. In this way, the consumed condensed water of the condenser 5 can flow back to the water receiving box 13 for repeated use.

[0049] like Figure 4 As shown, the control method of the refrigeration type range hood of this embodiment includes the following steps:

[0050] First, turn on the power, then determine the working mode. When the range hood is turned on and the cooling mode is turned off, enter the first branch A; when the range hood is turned on and the cooling mode is turned on, enter the second branch B; when the range hood is turned off and the cooling mode is turned on, enter the third branch C;

[0051] The first branch A comprises the following steps:

[0052] A1, water pump 15 remains closed;

[0053] A2, power off;

[0054] The second branch B comprises the following steps:

[0055] B1. Determine whether to turn on the cleaning function;

[0056] If the cleaning function is turned on, go to step B2;

[0057] If the cleaning function is turned off, go to step B3;

[0058] B2, the first flow regulating valve 11 is adjusted to a fully open state, the second flow regulating valve 12 remains closed, and then the power is turned off;

[0059] B3, the second flow regulating valve 12 is adjusted to a fully open state, the first flow regulating valve 11 remains closed, and then proceeds to step B4;

[0060] B4, check whether the water level of the water receiving box 13 exceeds the warning water level;

[0061] If the water level exceeds the warning level, the first flow regulating valve 11 is adjusted to a partially open state, and then the process returns to step B4 to continue water level determination;

[0062] If the water level does not exceed the warning level, return to step B3;

[0063] The third branch C includes the following steps:

[0064] C1, the impeller of the range fumes exhaust fan 3 rotates at a low speed;

[0065] C2, determine whether to turn on the cleaning function;

[0066] If the cleaning function is turned on, go to step C3;

[0067] If the cleaning function is turned off, go to step C4;

[0068] C3. The impeller of the range hood fan 3 is adjusted to rotate at a high speed, the first flow regulating valve 11 is adjusted to a fully open state, the second flow regulating valve 12 remains closed, and then the power is turned off;

[0069] C4, the impeller of the range hood fan 3 keeps rotating at a low speed;

[0070] C5, the second flow regulating valve 12 is adjusted to a fully open state, the first flow regulating valve 11 remains closed, and then enters step C6;

[0071] C6, detect whether the water level of the water receiving box 13 exceeds the warning water level;

[0072] If the water level exceeds the warning level, the first flow regulating valve 11 is adjusted to a partially open state, and then the process returns to step C6 to continue water level determination;

[0073] If the water level does not exceed the warning level, the process returns to step C4.

[0074] In the above steps, the partially open state of the first flow regulating valve 11 usually refers to a 25% to 50% open state.

[0075] During operation, the condensed water generated by the evaporator 6 flows into the water receiving box 13, and is pumped into the heat dissipation fan 8 and the surface of the condenser 5 by the water pump 15 through the flow regulating valve in two water paths. The first flow regulating valve 11 controls the water path of the heat dissipation fan 8, and the condensed water is dispersed and atomized by the impeller of the heat dissipation fan 8. The remaining small water droplets that have not been atomized will flow into the range hood fan 3, and are dispersed and atomized again by the impeller of the range hood fan 3, and finally discharged with the oil smoke. The second flow regulating valve 12 controls the water path of the condenser 5, and heat exchange and evaporation occur with it during the process of flowing through the surface of the condenser 5, and finally discharged outdoors. In addition, the first flow regulating valve 11 and the second flow regulating valve 12 will be adjusted in time according to the usage status to realize the flow distribution of condensed water, with a high degree of intelligence.

Claims

1. A refrigeration-type range hood, comprising a housing (1) and a fan frame (2) installed inside the housing (1), a range hood fan (3) installed inside the fan frame (2), a compressor (4), a condenser (5) and an evaporator (6) installed outside the fan frame (2), the compressor (4), the condenser (5) and the evaporator (6) being connected via a refrigerant pipeline (7), characterized in that: A heat dissipation fan (8) for dissipating heat from the condenser (5) is installed on the outside of the fan frame (2), and an air outlet of the heat dissipation fan (8) is fluidically connected to the inside of the volute of the range hood exhaust fan (3). Condensate condensed on the evaporator (6) is collected and transported to the heat dissipation fan (8) through a first water path (91), and then transported to the condenser (5) through a second water path (92). A first flow regulating valve (11) is installed on the first water path (91), and a second flow regulating valve (12) is installed on the second water path (92).

2. The refrigeration type range hood according to claim 1, characterized in that: A ventilation hole (31) is provided on the volute ring wall of the fume extraction fan (3), and the air outlet of the heat dissipation fan (8) faces the ventilation hole (31).

3. The refrigeration type range hood according to claim 2, characterized in that: An air guide plate (32) is installed at the ventilation hole (31) to guide the hot air blown out by the heat dissipation fan (8) into the interior of the volute.

4. The refrigeration type range hood according to claim 1, characterized in that: A water receiving box (13) for collecting condensed water is installed outside the fan frame (2), and a water outlet pipe (14) is connected to the water receiving box (13), and the outlet end of the water outlet pipe (14) is connected to the first water channel (91) and the second water channel (92).

5. The refrigeration type range hood according to claim 4, characterized in that: A water level sensor is installed in the water receiving box (13).

6. The refrigeration type range hood according to claim 5, characterized in that: A water pump (15) is installed in the water receiving box (13), and the condensed water in the water receiving box (13) is transported to the condenser (5) and the inside of the heat dissipation fan (8) through the water pump (15).

7. The refrigeration type range hood according to claim 4, characterized in that: A water return box (16) is installed at the bottom of the condenser (5), and the outlet of the water return box (16) is connected to the water receiving box (13) through a water return pipe (17).

8. The refrigeration type range hood according to any one of claims 1 to 7, characterized in that: An internal fan (18) matched with the evaporator (6) is installed outside the fan frame (2), an air-conditioning outlet (10) is provided on the casing (1), and the air outlet of the internal fan (18) is fluidically connected to the air-conditioning outlet (10).

9. The refrigeration type range hood according to claim 8, characterized in that: The compressor (4) is arranged below the evaporator (6) and the indoor fan (18).

10. The refrigeration type range hood according to claim 1, characterized in that: The oil fume exhaust fan (3) is a centrifugal fan.

11. A control method for a refrigeration range hood, characterized in that: The control method is applied to the refrigeration type range hood according to claim 6. The control method first turns on the power supply, then determines the working mode, enters the first branch A when the range hood is turned on and the refrigeration mode is turned off, enters the second branch B when the range hood is turned on and the refrigeration mode is turned on, and enters the third branch C when the range hood is turned off and the refrigeration mode is turned on; The first branch A comprises the following steps: A1, water pump (15) remains closed; A2, power off; The second branch B comprises the following steps: B1. Determine whether to turn on the cleaning function; If the cleaning function is turned on, go to step B2; If the cleaning function is turned off, go to step B3; B2, the first flow regulating valve (11) is adjusted to a fully open state, the second flow regulating valve (12) remains closed, and then the power is turned off; B3, the second flow regulating valve (12) is adjusted to a fully open state, the first flow regulating valve (11) remains closed, and then proceeds to step B4; B4, detecting whether the water level in the water receiving box (13) exceeds the warning water level; If the water level exceeds the warning level, the first flow regulating valve (11) is adjusted to a partially open state, and then the process returns to step B4 to continue water level determination; If the water level does not exceed the warning level, return to step B3; The third branch C comprises the following steps: C1, the impeller of the range fumes exhaust fan (3) rotates at a low speed; C2, determine whether to turn on the cleaning function; If the cleaning function is turned on, go to step C3; If the cleaning function is turned off, go to step C4; C3. The impeller of the range fumes exhaust fan (3) is adjusted to rotate at a high speed, the first flow regulating valve (11) is adjusted to a fully open state, the second flow regulating valve (12) remains in a closed state, and then the power is turned off; C4, the impeller of the range fumes exhaust fan (3) keeps rotating at a low speed; C5, the second flow regulating valve (12) is adjusted to a fully open state, the first flow regulating valve (11) remains closed, and then proceeds to step C6; C6. Detect whether the water level in the water receiving box (13) exceeds the warning water level; If the water level exceeds the warning level, the first flow regulating valve (11) is adjusted to a partially open state, and then the process returns to step C6 to continue water level determination; If the water level does not exceed the warning level, the process returns to step C4.

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