Refrigeration type range hood and control method thereof

Abstract

According to the refrigeration type extractor hood and the control method thereof, an oil smoke suction module of the refrigeration type extractor hood comprises an oil smoke suction fan, a heat dissipation module comprises a condenser and a heat dissipation fan, an inner unit module comprises an evaporator, an air outlet fan and a water receiving box, condensate water on the surface of the evaporator flows into the water receiving box, and a ventilation opening is formed in the volute annular wall of the oil smoke suction fan; an air outlet of the cooling fan is in fluid communication with the ventilation opening, a first water outlet pipe is connected to the water receiving box, and the water outlet end of the first water outlet pipe extends into the volute of the oil smoke suction fan. In the working process, condensate water flowing into the water receiving box enters the volute of the oil smoke suction fan through the first water outlet pipe, the volute impeller is cleaned through the high-temperature condensate water, the volute impeller is blown and washed through high-temperature air blown out of the air outlet of the cooling fan, and the oil accumulation rate of the volute impeller is reduced. According to the control method of the range hood, the working states of the water pump, the heater, the oil smoke suction fan, the cooling fan and other assemblies are correspondingly controlled according to the received signals of the temperature sensor, and then the cleaning effect and the intelligent degree of the fans are improved.

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. After the air conditioning condensate is evaporated by the steam generator, it enters the range hood fan. The high-temperature water vapor passes through the fan impeller to clean the impeller. Although the air conditioning range hood uses condensate to clean the fan impeller, it needs to use the steam generator inside the casing to heat the condensate, which is not only complex in structure, but also increases the cost. The heat generated by the condenser when the air conditioner is working is not effectively utilized. In summary, the existing refrigeration range hood needs to be further improved. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a refrigeration range hood which can utilize condensed water to clean the range hood fan and has a better cleaning effect in view of the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a cleaning method for a refrigeration range hood with good range hood cleaning effect and high intelligence in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: the refrigeration type range hood includes a range hood module, a compressor, a heat dissipation module and an indoor module, the range hood module includes a range hood fan, the heat dissipation module includes a condenser and a heat dissipation fan for dissipating heat from the condenser, the indoor module includes an evaporator and an air outlet fan, the compressor, condenser and evaporator are connected by a refrigerant pipeline, and also includes a water receiving box, condensed water on the surface of the evaporator can flow into the water receiving box, it is characterized in that: a vent is opened on the volute ring wall of the range hood fan, the air outlet of the heat dissipation fan is fluidly connected to the vent, a first water outlet pipe is connected to the water receiving box, and the water outlet end of the first water outlet pipe extends into the volute of the range hood fan.

[0007] Preferably, along the air flow direction, the heat dissipation fan is arranged downstream of the condenser.

[0008] As a preferred solution, a three-way valve and a water pump are installed on the water receiving box, the water inlet of the three-way valve is connected to the water outlet of the water pump, the first water outlet of the three-way valve is connected to the water inlet end of the first water outlet pipe, the second water outlet of the three-way valve is connected to the water inlet end of the second water outlet pipe, and the water outlet end of the second water outlet pipe is arranged on the condenser. In this arrangement, in addition to being transported to the inside of the fan, the condensed water can also be transported to the condenser to cool the condenser to improve its heat exchange efficiency.

[0009] As another preferred solution, the condenser is arranged below the evaporator, and the condensed water condensed on the surface of the evaporator flows to the condenser through the water pipe. In this way, the condensed water on the surface of the evaporator can directly flow to the condenser to cool the condenser.

[0010] In order to recycle the condensed water that is not consumed by the condenser, the condenser is arranged above the water receiving box, and a return pipe is installed at the bottom of the condenser, and the condensed water that is not consumed by the condenser flows into the water receiving box through the return pipe. In this arrangement, after the condensed water is heated by the condenser, the water temperature rises, and after the high-temperature condensed water enters the volute, it is more conducive to improving the cleaning effect of the volute and the impeller.

[0011] In order to smoothly transport the condensed water in the water receiving box to the inside of the fan volute, a water pump is installed in the water receiving box, and the water outlet of the water pump is connected to the water inlet end of the first water outlet pipe.

[0012] In order to realize intelligent cleaning of the range fumes fan and improve the cleaning effect, a heater is installed in the water receiving box, a first temperature sensor for detecting the water temperature of the water receiving box is installed in the water receiving box, a second temperature sensor for detecting the condenser is installed on the condenser, and a controller is also included. The controller can receive the output signal of the first temperature sensor and control the working state of the water pump, heater and range fumes fan according to the output signal, and the controller can receive the output signal of the second temperature sensor and control the working state of the heat dissipation fan according to the output signal. With such a configuration, the controller can control the working state of components such as the water pump, heater, range fumes fan and heat dissipation fan according to the received signal of the temperature sensor, thereby improving the cleaning effect and intelligence of the fan.

[0013] In order to smoothly guide the hot air blown out by the heat dissipation fan into the fan, an air guide plate is installed at the vent to guide the hot air blown out by the heat dissipation fan into the volute. In this way, the hot air entering the volute cooperates with the high-temperature condensed water entering the volute, which can slow down the oil accumulation rate inside the volute and further improve the cleaning effect.

[0014] The air guide plate can be installed in a plurality of different positions. Preferably, the air guide plate is close to the root of the volute tongue of the range fumes exhaust fan.

[0015] Further preferably, the oil fume extraction module comprises a fan frame and an air inlet body arranged at the bottom of the fan frame, the oil fume extraction fan is installed inside the fan frame, and the compressor, the heat dissipation module and the internal unit module are installed outside the fan frame.

[0016] The heat dissipation module, the internal unit module and the compressor can be installed in multiple different positions. Preferably, the heat dissipation fan of the heat dissipation module is arranged on the top of the fan rack, the internal unit module and the heat dissipation fan are arranged adjacent to each other on the left and right, and the compressor is arranged below the internal unit module.

[0017] Further preferably, the range fumes exhaust fan is a centrifugal fan.

[0018] The technical solution adopted by the present invention to solve the second technical problem is: the control method of the refrigeration type range hood comprises the following steps:

[0019] S1, start;

[0020] S2, air conditioning mode operates normally;

[0021] Determine whether to start self-cleaning of the range hood fan;

[0022] If yes, proceed to step S3;

[0023] If not, return to step S2;

[0024] S3, the range fumes exhaust fan stops running;

[0025] S4, judging whether the middle temperature of the condenser reaches the set value;

[0026] If yes, proceed to step S6;

[0027] If not, the speed of the cooling fan is reduced and the process returns to step S4;

[0028] S5: Whether the cooling fan has run for the set time;

[0029] If yes, proceed to step S6;

[0030] If not, return to step S5;

[0031] S6, judging whether the water temperature of the water box reaches the set value;

[0032] If yes, the water pump is turned on, the range fumes exhaust fan starts running, and then the process goes to step S7;

[0033] If not, the heater is operated and the process returns to step S6;

[0034] S7, judging whether the operation time of the range hood fan has reached the set time;

[0035] If yes, proceed to step S8;

[0036] If not, return to step S7;

[0037] S8. End.

[0038] 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 flows into the water receiving box, and the condensed water in the water receiving box enters the interior of the volute of the range hood fan through the first water outlet pipe, and the volute impeller is cleaned by the higher temperature condensed water. At the same time, the high temperature air blown out from the air outlet of the heat dissipation fan blows the volute impeller, and the high temperature air and high temperature condensed water enter the interior of the volute at the same time, which can slow down its oil accumulation rate, thereby increasing the effective use time of the range hood. The controller of the range hood can control the working states of components such as the water pump, heater, range hood fan and heat dissipation fan according to the signal received from the temperature sensor, thereby improving the fan cleaning effect and intelligence level. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic structural diagram of a range hood according to Embodiment 1 of the present invention;

[0040] Figure 2 for Figure 1 A side view of the range hood shown;

[0041] Figure 3 for Figure 1 A schematic diagram of a partial structure of a range hood shown;

[0042] Figure 4 This is a connection diagram of an air conditioning assembly according to Embodiment 1 of the present invention;

[0043] Figure 5 This is a schematic structural diagram of a range hood according to a second embodiment of the present invention;

[0044] Figure 6 This is a schematic structural diagram of a range hood according to a third embodiment of the present invention;

[0045] Figure 7 This is a schematic structural diagram of a range hood according to a fourth embodiment of the present invention;

[0046] Figure 8 This is a schematic structural diagram of a range hood according to a fifth embodiment of the present invention;

[0047] Fig. 9 4 is a control logic diagram of a control method for a range hood according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below with reference to the accompanying drawings.

[0049] Embodiment 1:

[0050] like Figures 1 to 4 As shown, the range hood of this embodiment includes a range hood module 1, a compressor 2, a heat dissipation module 3 and an internal unit module 4. The range hood module 1 includes a range hood fan 11, a fan frame 12 and an air inlet body 13. The range hood fan 11 is a centrifugal fan and is installed in the fan frame 12. The air inlet body 13 is arranged at the bottom of the fan frame 12. The compressor 2, the heat dissipation module 3 and the internal unit module 4 are installed outside the fan frame 12.

[0051] The heat dissipation module 3 of this embodiment is arranged on the top of the fan frame 12. The heat dissipation module 3 includes a condenser 31 and a heat dissipation fan 32 for dissipating heat from the condenser 31. The heat dissipation fan 32 is arranged downstream of the condenser 31 along the air flow direction. The indoor module 4 is arranged on the upper part of the range hood body and on the right side of the heat dissipation module 3. The indoor module 4 includes an evaporator 41 and an air outlet fan 42. The air outlet fan 42 is arranged downstream of the evaporator 41 along the air flow direction. The compressor 2 is arranged below the indoor module 4. The compressor 2, the condenser 31 and the evaporator 41 are connected through the refrigerant pipeline 5. The compressor 2, the condenser 31 and the evaporator 41 constitute an air conditioning component, and its working principle is the same as that of the existing air conditioner, which will not be described in detail here.

[0052] A vent 112 is formed on the ring wall of the volute 111 of the range fumes extracting fan 11, and the air outlet of the heat dissipating fan 32 is in fluid communication with the vent 112. An air guide plate 113 is installed at the vent 112. In this embodiment, the air guide plate 113 is close to the root of the volute tongue 114 of the range fumes extracting fan 11, and the air guide plate 113 is used to guide the hot air blown out by the heat dissipating fan 32 into the interior of the volute 111.

[0053] The water receiving box 6 is installed outside the fan frame 12, and is used to collect condensed water condensed on the surface of the evaporator 41. A three-way valve 8 and a water pump 9 are installed on the water receiving box 6. The water inlet of the three-way valve 8 is connected to the water outlet of the water pump 9. The first water outlet of the three-way valve 8 is connected to the water inlet end of the first water outlet pipe 71, and the second water outlet of the three-way valve 8 is connected to the water inlet end of the second water outlet pipe 72. The water outlet end of the first water outlet pipe 71 extends into the volute 111 of the range hood fan 11, and the water outlet end of the second water outlet pipe 72 is arranged on the condenser 31.

[0054] The condenser 31 of this embodiment is arranged above the water receiving box 6, and a return pipe 73 is installed at the bottom of the condenser 31, and the condensed water that is not consumed by the condenser 31 flows into the water receiving box 6 through the return pipe 73. In the process of the condensed water flowing through the surface of the condenser 31, due to the high temperature of the condenser 31, part of the condensed water is consumed by the condenser 31, and the temperature of the unconsumed condensed water increases and flows into the water receiving box 6, so that the temperature of the condensed water in the water receiving box 6 increases.

[0055] During operation, the condensed water in the water receiving box 6 can be output in two ways under the action of the water pump 9. By switching the three-way valve 8, water can be discharged from the first water outlet pipe 71 and then enter the volute 111 to clean the volute and the impeller. Water can also be discharged from the second water outlet pipe 72 and flow to the condenser 31 to cool the condenser 31. At the same time, the high-temperature air blown by the heat dissipation fan 32 enters the volute 111 through the vent 112 to wash the volute impeller. The high-temperature air and high-temperature condensed water enter the volute at the same time, which can slow down the oil accumulation rate.

[0056] When the system starts the self-cleaning mode, the range hood fan 11 stops rotating, and the heat dissipation fan 32 blows the hot air passing through the condenser 31 to the volute impeller of the range hood fan 11. When the temperature in the middle of the condenser 31 is detected to be not high enough, the speed of the heat dissipation fan 32 is reduced to maintain the temperature of the air blown out. Then the three-way valve 8 turns, and the high-temperature water heated by the condenser 31 is sprayed to the volute impeller through the first water outlet pipe 71. At this time, the impeller of the range hood fan 11 starts to rotate and maintains for a certain period of time to achieve the purpose of cleaning.

[0057] Embodiment 2:

[0058] like Figure 5As shown, the condenser 31 of this embodiment is arranged below the evaporator 41, and the condensed water condensed on the surface of the evaporator 41 flows to the condenser 31 through the water pipe. The rest of the structure and working principle of this embodiment are the same as those of the first embodiment, and will not be described in detail here.

[0059] Embodiment three:

[0060] like Figure 6 As shown, in this embodiment, a water pump 9 is installed in the water receiving box 6, and the water outlet of the water pump 9 is connected to the water inlet end of the first water outlet pipe 71. Compared with the first embodiment, the three-way valve is omitted. The condensed water in the water receiving box 6 is directly transported to the volute of the range fumes exhaust fan 11 through the water pump 9 and the first water outlet pipe 71 to clean the volute and the impeller. The rest of the structure and working principle of this embodiment are the same as those of the first embodiment, and will not be described in detail here.

[0061] Embodiment 4:

[0062] like Figure 7 As shown, compared with the third embodiment, the condenser 31 of this embodiment is arranged below the evaporator 41, and the condensed water condensed on the surface of the evaporator 41 flows to the condenser 31 through the water pipe. The remaining structure is the same as that of the third embodiment and will not be described in detail here.

[0063] Embodiment five:

[0064] like Figure 8 As shown, compared with the fourth embodiment, the refrigeration range hood of this embodiment is based on the third embodiment, and a heater 10 is installed in the water receiving box 6, a first temperature sensor (not shown in the figure) for detecting the water temperature of the water receiving box is installed in the water receiving box 6, a second temperature sensor (not shown in the figure) for detecting the condenser 31 is installed on the condenser 31, and a controller (not shown in the figure) is also included. The controller can receive the output signal of the first temperature sensor and control the working states of the water pump 9, the heater 10 and the range hood fan 11 accordingly according to the output signal, and the controller can receive the output signal of the second temperature sensor and control the working state of the heat dissipation fan 32 accordingly according to the output signal.

[0065] like Fig. 9 As shown, the control method of the refrigeration type range hood of this embodiment includes the following steps:

[0066] S1, start;

[0067] S2, air conditioning mode operates normally;

[0068] Determine whether to start self-cleaning of the range hood fan;

[0069] If yes, proceed to step S3;

[0070] If not, return to step S2;

[0071] S3, the range fumes exhaust fan stops running;

[0072] S4, judging whether the middle temperature of the condenser reaches the set value;

[0073] If yes, proceed to step S6;

[0074] If not, the speed of the cooling fan is reduced and the process returns to step S4;

[0075] S5: Whether the cooling fan has run for the set time;

[0076] If yes, proceed to step S6;

[0077] If not, return to step S5;

[0078] S6, judging whether the water temperature of the water box reaches the set value;

[0079] If yes, the water pump is turned on, the range fumes exhaust fan starts running, and then the process goes to step S7;

[0080] If not, the heater is operated and the process returns to step S6;

[0081] S7, judging whether the operation time of the range hood fan has reached the set time;

[0082] If yes, proceed to step S8;

[0083] If not, return to step S7;

[0084] S8. End.

[0085] It can be seen from the above control logic that when the system starts the self-cleaning mode, the range hood fan 11 stops rotating, and the heat dissipation fan 32 blows the hot air passing through the condenser 31 to the volute impeller of the range hood fan 11. When the second temperature sensor detects that the temperature in the middle of the condenser 31 is not high enough, the controller controls the speed of the heat dissipation fan 32 to reduce to maintain the temperature of the air blown out. When the second temperature sensor detects that the temperature in the middle of the condenser reaches the set value, after the heat dissipation fan 32 runs for the set time, and the first temperature sensor detects that the water temperature in the water receiving box 6 reaches the set value, the water pump is turned on, and the range hood fan 11 starts running, and the volute impeller is cleaned with high-temperature condensed water. When the water temperature in the water receiving box 6 does not reach the set value, the heater 10 runs to heat the condensed water in the water receiving box 6 to ensure that the high-temperature condensed water is sprayed to the volute impeller. At this time, the range hood fan 11 starts running and maintains for a certain period of time to achieve the purpose of cleaning.

Claims

1. A refrigeration type range hood, comprising a range hood module (1), a compressor (2), a heat dissipation module (3) and an internal unit module (4), wherein the range hood module (1) comprises a range hood fan (11), the heat dissipation module (3) comprises a condenser (31) and a heat dissipation fan (32) for dissipating heat from the condenser (31), the internal unit module (4) comprises an evaporator (41) and an air outlet fan (42), the compressor (2), the condenser (31) and the evaporator (41) are connected via a refrigerant pipeline (5), and further comprising a water receiving box (6), condensed water on the surface of the evaporator (41) can flow into the water receiving box (6), characterized in that: A vent (112) is provided on the annular wall of the volute (111) of the fume extractor fan (11); an air outlet of the heat dissipation fan (32) is fluidically connected to the vent (112); a first water outlet pipe (71) is connected to the water receiving box (6); a water outlet end of the first water outlet pipe (71) extends into the interior of the volute (111) of the fume extractor fan (11).

2. The refrigeration type range hood according to claim 1, characterized in that: Along the air flow direction, the heat dissipation fan (32) is arranged downstream of the condenser (31).

3. The refrigeration type range hood according to claim 1, characterized in that: A three-way valve (8) and a water pump (9) are installed on the water receiving box (6); the water inlet of the three-way valve (8) is connected to the water outlet of the water pump (9); the first water outlet of the three-way valve (8) is connected to the water inlet end of the first water outlet pipe (71); the second water outlet of the three-way valve (8) is connected to the water inlet end of the second water outlet pipe (72); and the water outlet end of the second water outlet pipe (72) is arranged on the condenser (31).

4. The refrigeration type range hood according to claim 1, characterized in that: The condenser (31) is arranged below the evaporator (41), and condensed water condensed on the surface of the evaporator (41) flows to the condenser (31) through the water pipe.

5. The refrigeration type range hood according to claim 3 or 4, characterized in that: The condenser (31) is arranged above the water receiving box (6), and a return pipe (73) is installed at the bottom of the condenser (31). Condensed water that is not consumed by the condenser (31) flows into the water receiving box (6) through the return pipe (73).

6. The refrigeration type range hood according to claim 1, characterized in that: A water pump (9) is installed in the water receiving box (6), and the water outlet of the water pump (9) is connected to the water inlet end of the first water outlet pipe (71).

7. The refrigeration type range hood according to claim 6, characterized in that: A heater (10) is installed in the water receiving box (6), a first temperature sensor for detecting the water temperature of the water receiving box is installed in the water receiving box (6), a second temperature sensor for detecting the condenser is installed on the condenser (31), and a controller is also included. The controller can receive an output signal from the first temperature sensor and control the working states of the water pump (9), the heater (10) and the range fumes exhaust fan (11) according to the output signal, and the controller can receive an output signal from the second temperature sensor and control the working state of the heat dissipation fan (32) according to the output signal.

8. The refrigeration type range hood according to claim 1, characterized in that: An air guide plate (113) is installed at the vent (112) to guide the hot air blown out by the heat dissipation fan (32) into the interior of the volute (111).

9. The refrigeration type range hood according to claim 8, characterized in that: The air guide plate (113) is close to the root of the volute tongue (114) of the range fumes exhaust fan (11).

10. The refrigeration type range hood according to any one of claims 1 to 9, characterized in that: The oil fume extraction module (1) comprises a fan frame (12) and an air inlet body (13) arranged at the bottom of the fan frame (12); the oil fume extraction fan (11) is installed inside the fan frame (12); and the compressor (2), the heat dissipation module (3) and the internal unit module (4) are installed outside the fan frame (12).

11. The refrigeration type range hood according to claim 10, characterized in that: The heat dissipation fan (32) of the heat dissipation module (3) is arranged on the top of the fan frame (12), the internal unit module (4) is arranged adjacent to the heat dissipation fan (32) on the left and right, and the compressor (2) is arranged below the internal unit module (4).

12. The refrigeration type range hood according to claim 1, characterized in that: The oil fume suction fan (11) is a centrifugal fan.

13. A control method for a refrigeration range hood, characterized in that: The control method is applied to the refrigeration range hood according to claim 7, and the control method comprises the following steps: S1, start; S2, air conditioning mode operates normally; Determine whether to start self-cleaning of the range hood fan; If yes, proceed to step S3; If not, return to step S2; S3, the range fumes exhaust fan stops running; S4, judging whether the middle temperature of the condenser reaches the set value; If yes, proceed to step S6; If not, the speed of the cooling fan is reduced and the process returns to step S4; S5: Whether the cooling fan has run for the set time; If yes, proceed to step S6; If not, return to step S5; S6, judging whether the water temperature of the water box reaches the set value; If yes, the water pump is turned on, the range fumes exhaust fan starts running, and then the process goes to step S7; If not, the heater is operated and the process returns to step S6; S7, judging whether the range hood fan has reached the set time; If yes, proceed to step S8; If not, return to step S7; S8. End.

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