Refrigeration type range hood and control method thereof

Abstract

According to the refrigeration type range hood and the control method thereof, an oil smoke suction module of the refrigeration type range hood comprises an oil smoke suction fan, a ventilation opening is formed in the volute annular wall of the oil smoke suction fan, a heat dissipation module is provided with a heat dissipation fan, an air outlet of the heat dissipation fan is in fluid communication with the ventilation opening, and a first temperature sensor is installed at the ventilation opening; a second temperature sensor is installed at an air outlet of the oil smoke suction fan, and the controller can receive output signals of the first temperature sensor and the second temperature sensor and correspondingly control the rotating speed of the oil smoke suction fan and / or the cooling fan according to the received signals. According to the refrigeration type range hood, heat dissipation high-temperature airflow is introduced into the volute of the oil smoke suction fan through the heat dissipation fan, the volute and the impeller are cleaned, meanwhile, the heat exchange efficiency of the condenser is improved, in addition, the rotating speeds of the heat dissipation fan and the oil smoke suction fan are automatically adjusted according to the temperature of the ventilation opening and the temperature of the air outlet of the fan, and the heat dissipation efficiency is improved. Therefore, deep and efficient cleaning of the volute and the impeller is ensured.

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. An air conditioning component is added to the range hood platform. The compressor, condenser and evaporator are connected through a refrigerant pipeline. The refrigeration-type range hood can realize all the functions of a range hood and the function of an air conditioner. During daily use of refrigeration range hoods currently on the market, a large amount of grease will remain on the volute and impeller. After a long period of air-drying and solidification, these grease will form a hard grease layer on the volute and impeller, which is very difficult to clean. The existing volute cleaning technology often uses a steam generator to heat water added to the steam generator from the outside to form high-temperature water vapor, which is then sprayed onto the volute and impeller for cleaning. Since it requires an additional water source from the outside to clean the range hood, it is more troublesome to use. For example, the Chinese utility model patent with patent number CN202220678174.3 (authorization announcement number CN 217271065 U) discloses "A fan cleaning device and a range hood using the fan cleaning device", which discloses opening a hole in the volute ring wall, and spraying a cleaning liquid into the volute through the hole to clean the volute and the impeller. Although there are also range hoods in the prior art that use controlled condensed water to clean the volute, such as the "A Kind of Air-conditioning Range Hood" disclosed in the Chinese utility model patent with patent number 202220018984.6 (authorization announcement number CN 217004584 U), the range hood has a water collection box for collecting condensed water condensed on the surface of the evaporator, and a steam generator is installed inside the housing. 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 condensed water is evaporated by the steam generator, it enters the range hood fan, and the high-temperature water vapor passes through the fan impeller to clean the impeller. Although the air-conditioning range hood uses air-conditioning condensed water to clean the fan impeller, it is necessary to use the steam generator inside the housing to heat the condensed water, which is not only complicated in structure, but also increases the cost, and the heat generated by the condenser when the air conditioner is working is not effectively utilized. In summary, there is a need to further improve the existing air-conditioning type range hood. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a refrigeration-type range hood that can effectively utilize the heat of the condenser to heat and clean the fan volute and impeller in response to 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 a refrigeration range hood that can intelligently adjust the air volume of the range hood exhaust fan and the heat dissipation fan to achieve efficient cleaning of the volute and the impeller in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: the refrigeration type range hood includes a fume suction module, a compressor, a heat dissipation module and an indoor module, the fume suction module includes a fume suction fan, the compressor, the heat dissipation module and the indoor module are connected through a refrigerant pipeline, and is characterized in that: a vent is opened on the volute ring wall of the fume suction fan, the heat dissipation module has a heat dissipation fan, the air outlet of the heat dissipation fan is fluidly connected with the vent, a first temperature sensor is installed at the vent, and a second temperature sensor is installed at the air outlet of the fume suction fan, and a controller is also included, the controller can receive output signals of the first temperature sensor and the second temperature sensor, and control the rotation speed of the fume suction fan and / or the heat dissipation fan accordingly according to the received signals.

[0006] In order to smoothly guide the hot air blown out by the heat dissipation fan into the interior of the volute, an air guide plate for guiding the hot air blown out by the heat dissipation fan into the interior of the volute is installed at the vent.

[0007] In order to ensure that the hot air blown out by the heat dissipation fan can effectively clean the volute and impeller, the air guide plate guides the hot air blown out by the heat dissipation fan into the gap between the impeller of the range fume suction fan and the volute ring wall, and the air outlet direction of the heat dissipation fan is consistent with the flow direction of the oil fume airflow in the gap.

[0008] Further preferably, a volute tongue is installed on the volute casing of the range fumes exhaust fan, and the air guide plate is close to the root of the volute tongue.

[0009] Further preferably, the range fumes exhaust fan is a centrifugal fan.

[0010] Preferably, the fume extraction module comprises an upper box body and an air inlet body arranged at the bottom of the upper box body, the fume extraction fan is installed inside the upper box body, and the air inlet body is provided with a fume inlet connected to the air inlet of the fume extraction fan.

[0011] The compressor and the internal unit module can be arranged in a plurality of different positions. Preferably, the compressor is installed above the air inlet body and located on the left or right side of the upper box body, and the internal unit module is arranged above the compressor.

[0012] In order to enable the hot air blown out by the cooling fan to flow quickly to the vent, the cooling module is arranged on the top of the upper box body, the cooling fan is arranged above the range fumes exhaust fan, and the air outlet of the cooling fan faces downward and toward the vent.

[0013] The heat dissipation module and the indoor unit module can have multiple installation positions. Preferably, the heat dissipation module includes a condenser and the heat dissipation fan, and the indoor unit module includes an evaporator and an indoor unit fan. The heat dissipation module and the indoor unit module are arranged adjacent to each other, and the heat dissipation module and the indoor unit module share an air inlet.

[0014] In order to blow cold air out of the shell of the range hood, an internal unit air outlet is opened on the upper box body or the air inlet body, and the air outlet of the internal unit fan is fluidly connected with the internal unit air outlet through an air guide channel.

[0015] The technical solution adopted by the present invention to solve the second technical problem is: the control method is applied to the refrigeration type range hood according to claim 4, and the control method comprises the following steps:

[0016] S1, the range hood power is turned on;

[0017] S2, determining whether to turn on the cooling mode;

[0018] If yes, proceed to step S3;

[0019] If not, proceed to step S4;

[0020] S3, determining whether to start the cleaning mode;

[0021] If yes, go to step S5;

[0022] If not, adjust the temperature according to user needs and turn off the power after use;

[0023] S4, determining whether to start the cleaning mode;

[0024] If yes, the compressor is started, the cooling fan is turned on, and then the process goes to step S5;

[0025] If not, adjust the gear of the range hood fan according to user needs, and turn off the power after use;

[0026] S5: Determine whether the sensing temperature T1 of the first temperature sensor is greater than or equal to T L ;

[0027] If yes, proceed to step S6;

[0028] If not, reduce the air volume of the cooling fan and return to step S5;

[0029] S6, determine whether T1 is less than T H ;

[0030] If yes, the impeller of the range fumes exhaust fan starts to rotate, and then the process goes to step S7;

[0031] If not, increase the air volume of the cooling fan and return to step S5.

[0032] S7: Determine whether the sensing temperature T2 of the second temperature sensor is greater than or equal to T L ;

[0033] If so, the impeller of the range fumes exhaust fan drives the hot air to heat the volute, and when it is finished, turn off the power;

[0034] If not, the impeller speed of the range fumes exhaust fan is reduced, and the process returns to step S7.

[0035] More preferably, the T L is 50°C, the T H is 90℃.

[0036] Further preferably, T L The optimum value is 70℃, T H The optimum value is 75°C.

[0037] Compared with the prior art, the advantages of the present invention are as follows: the refrigeration-type range hood has a vent on the volute ring wall of the range fume fan, and the air outlet of the heat dissipation fan of the heat dissipation module is fluidly connected with the vent, so that the heat dissipation high-temperature airflow can be introduced into the volute of the range fume fan and taken away by the range fume fan. On the one hand, the volute and the impeller are cleaned by hot air, so that the heat of the condenser is effectively utilized and the service life of the range fume fan is extended. On the other hand, the heat of the condenser is discharged to the outside through the range fume fan, which can improve the heat exchange efficiency of the condenser and thus improve the energy efficiency of the air conditioner. In addition, the control method of the range hood can automatically adjust the rotation speed of the heat dissipation fan and the range fume fan according to the temperature at the vent and the fan outlet, so that the wind temperature inside the range fume fan is maintained within a temperature range that is conducive to cleaning, thereby ensuring that the volute and the impeller can be deeply and efficiently cleaned, and the intelligent degree is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the internal structure of a range hood according to an embodiment of the present invention;

[0040] Figure 3 A connection diagram of an air conditioning assembly according to an embodiment of the present invention;

[0041] Figure 4 This is a logic control diagram of the control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below with reference to the accompanying drawings.

[0043] like Figures 1 to 3 As shown, the refrigeration range hood of this embodiment includes a range hood module 1, a compressor 2, a heat dissipation module 3 and an indoor module 4. The range hood module 1 includes an upper box body 12 and an air inlet body 13 arranged at the bottom of the upper box body 12. The range hood fan 11 is installed inside the upper box body 12. The air inlet body 13 is provided with a smoke inlet connected to the air inlet of the range hood fan 11. An oil cup 7 is installed at the bottom of the air inlet body 13.

[0044] In this embodiment, the compressor 2 is installed above the air inlet body 16 and located on the right side of the upper box body 15, the indoor unit module 4 is arranged above the compressor 2, the heat dissipation module 3 is arranged on the top of the upper box body 15, and the heat dissipation module 3 is located on the left side of the indoor unit module 4.

[0045] The heat dissipation module 3 includes a condenser 32 and a heat dissipation fan 31, and the indoor unit module 4 includes an evaporator 42 and an indoor unit fan 41. The heat dissipation module 3 and the indoor unit module 4 are arranged adjacent to each other and share an air inlet. Figure 3 As shown, the compressor 2 , the condenser 32 and the evaporator 42 constitute an air conditioning component and are connected via a refrigerant pipeline 5 .

[0046] The range hood fan 11 is a centrifugal fan, and a vent 112 is provided on the volute ring wall 111 of the range hood fan 11. The heat dissipation fan 31 is arranged above the range hood fan 11, and the air outlet of the heat dissipation fan 31 faces downward and toward the vent 12. An air guide plate 3 is installed at the vent 12, and the air guide plate 3 is close to the root of the volute tongue 115. The air guide plate 13 guides the hot air blown out by the heat dissipation fan 31 into the interior of the volute. Specifically, the air guide plate 13 guides the hot air blown out by the heat dissipation fan 31 into the gap 14 between the impeller of the range hood fan 11 and the volute ring wall, and the air outlet direction of the heat dissipation fan 31 is consistent with the flow direction of the oil fume airflow at the gap 14. A first temperature sensor 61 is installed at the vent 12, and a second temperature sensor 62 is installed at the air outlet of the fume extractor fan 11. A controller (not shown) can receive output signals of the first temperature sensor 61 and the second temperature sensor 62, and control the rotation speed of the fume extractor fan 11 and / or the heat dissipation fan 31 accordingly according to the received signals.

[0047] like Figure 1 and Figure 2 As shown, an indoor air outlet 43 is provided on the front of the air inlet body 13, and the air outlet of the indoor fan 41 is fluidly connected to the indoor air outlet 43 through the air guide channel. In addition, the indoor air outlet 43 can also be arranged on the upper box body 12.

[0048] In normal cooling mode, the temperature of the condenser 32 can reach 70°C, and the heat dissipated by the condenser 32 is discharged into the common flue together with the fume extractor fan 11, thereby improving the heat exchange efficiency of the condenser and further improving the energy efficiency of the air conditioner. At the same time, the heat dissipation fan 31 blows the heat of the condenser 32 into the volute of the fume extractor fan 11, heats the volute and the impeller, and makes the grease on the volute and the impeller fuse and flow into the oil cup 7, and cleans the volute and the impeller with hot air, so that the heat of the condenser 32 is effectively utilized.

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

[0050] S1, the range hood power is turned on;

[0051] S2, determining whether to turn on the cooling mode;

[0052] If yes, proceed to step S3;

[0053] If not, proceed to step S4;

[0054] S3, determining whether to start the cleaning mode;

[0055] If yes, go to step S5;

[0056] If not, adjust the temperature according to user needs and turn off the power after use;

[0057] S4, determining whether to start the cleaning mode;

[0058] If yes, the compressor 2 is started, the cooling fan 31 is turned on, and then the process goes to step S5;

[0059] If not, adjust the gear position of the range fumes exhaust fan 11 according to user needs, and turn off the power supply after use;

[0060] S5: Determine whether the sensing temperature T1 of the first temperature sensor 61 is greater than or equal to T L ;

[0061] If yes, proceed to step S6;

[0062] If not, the air volume of the cooling fan 31 is reduced, and the process returns to step S5;

[0063] S6, determine whether T1 is less than T H ;

[0064] If yes, the impeller of the range fumes exhaust fan 11 is turned on and the process then proceeds to step S7;

[0065] If not, increase the air volume of the cooling fan 31 and return to step S5.

[0066] S7: Determine whether the sensing temperature T2 of the second temperature sensor 62 is greater than or equal to T L ;

[0067] If so, the impeller of the range fumes exhaust fan 11 drives the hot air to heat the volute, and after use, the power is turned off;

[0068] If not, the impeller speed of the range fumes exhaust fan 11 is reduced, and the process returns to step S7.

[0069] Among them, T L =50℃, T H =90℃.

[0070] T L The optimum value is 70℃, T H The optimum value is 75°C.

[0071] As can be seen from the above control method, the first temperature sensor 61 detects the temperature of the hot air blown out from the heat dissipation fan 31. When the air conditioner is in normal operation in the cooling mode, the temperature T of the condenser 32 is L The heat dissipation wind with high temperature continuously enters the volute to heat the volute and the impeller. When the temperature detected by the first temperature sensor 61 is lower than 50°C, the temperature of the heat dissipation wind is increased by reducing the rotation speed of the heat dissipation fan 31, thereby effectively cleaning the volute and the impeller. In addition, the heat dissipated needs to be discharged to the outside through the range hood fan 11. When the impeller of the range hood fan 11 starts to rotate, it will disturb and dissipate the high-temperature air, causing the wind temperature to decrease, thereby making the heating and cleaning effect of the volute worse. Therefore, it is necessary to control the wind temperature inside the range hood fan 11. When the temperature detected by the second temperature sensor 62 at the air outlet of the range hood fan 11 is lower than 50°C, the temperature of the heat dissipation wind can be increased by reducing the rotation speed of the range hood fan 11, thereby deeply and efficiently cleaning the volute and the impeller.

Claims

1. A refrigeration-type range hood, comprising a range hood module (1), a compressor (2), a heat dissipation module (3) and an indoor unit module (4), wherein the range hood module (1) comprises a range hood fan (11), and the compressor (2), the heat dissipation module (3) and the indoor unit module (4) are connected via a refrigerant pipeline (5), characterized in that: A vent (112) is provided on the volute ring wall (111) of the fume extractor fan (11); the heat dissipation module (3) comprises a heat dissipation fan (31); the air outlet of the heat dissipation fan (31) is fluidically connected to the vent (112); a first temperature sensor (61) is installed at the vent (112); a second temperature sensor (62) is installed at the air outlet of the fume extractor fan (11); and a controller is also included, the controller being capable of receiving output signals of the first temperature sensor (61) and the second temperature sensor (62), and controlling the rotation speed of the fume extractor fan (11) and / or the heat dissipation fan (31) accordingly according to the received signals.

2. 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 (31) into the interior of the volute.

3. The refrigeration type range hood according to claim 2, characterized in that: The air guide plate (113) guides the hot air blown out by the heat dissipation fan (31) into the gap (114) between the impeller of the oil fume suction fan (11) and the volute ring wall, and the air outlet direction of the heat dissipation fan (31) is consistent with the flow direction of the oil fume airflow in the gap (114).

4. The refrigeration type range hood according to claim 2, characterized in that: A volute tongue (115) is installed on the volute casing of the fume extraction fan (11), and the air guide plate (113) is close to the root of the volute tongue (115).

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

6. The refrigeration type range hood according to any one of claims 1 to 5, characterized in that: The oil fume extraction module (1) comprises an upper box body (12) and an air inlet body (13) arranged at the bottom of the upper box body (12); the oil fume extraction fan (11) is installed inside the upper box body (12); and the air inlet body (13) is provided with an air inlet port connected to the air inlet port of the oil fume extraction fan (11).

7. The refrigeration type range hood according to claim 6, characterized in that: The compressor (2) is installed above the air inlet body (13) and is located on the left or right side of the upper box body (12), and the internal unit module (4) is arranged above the compressor (2).

8. The refrigeration type range hood according to claim 6, characterized in that: The heat dissipation module (3) is arranged on the top of the upper box body (12), the heat dissipation fan (31) is arranged above the range fumes exhaust fan (11), and the air outlet of the heat dissipation fan (31) faces downward and toward the ventilation port (112).

9. The refrigeration type range hood according to claim 6, characterized in that: The heat dissipation module (3) comprises a condenser (32) and a heat dissipation fan (31), and the indoor unit module (4) comprises an evaporator (42) and an indoor unit fan (41). The heat dissipation module (3) and the indoor unit module (4) are arranged adjacent to each other, and the heat dissipation module (3) and the indoor unit module (4) share an air inlet.

10. The refrigeration type range hood according to claim 9, characterized in that: An indoor air outlet (43) is provided on the upper box body (12) or the air inlet body (13), and an air outlet of the indoor fan (41) is fluidically connected to the indoor air outlet (43) via an air guide channel (44).

11. A control method for a refrigeration range hood, characterized in that: The control method is applied to the refrigeration range hood according to any one of claims 1 to 10, and the control method comprises the following steps: S1, the range hood power is turned on; S2, determining whether to turn on the cooling mode; If yes, proceed to step S3; If not, proceed to step S4; S3, determining whether to start the cleaning mode; If yes, go to step S5; If not, adjust the temperature according to user needs and turn off the power after use; S4, determining whether to start the cleaning mode; If yes, the compressor (2) is started, the cooling fan (31) is turned on, and then the process proceeds to step S5; If not, adjust the gear position of the range fumes exhaust fan (11) according to user needs, and turn off the power supply after use; S5. Determine whether the sensing temperature T1 of the first temperature sensor (61) is greater than or equal to T L ; If yes, proceed to step S6; If not, the air volume of the cooling fan (31) is reduced and the process returns to step S5; S6, determine whether T1 is less than T H ; If yes, the impeller of the range fumes exhaust fan (11) is turned on and the process then proceeds to step S7; If not, increase the air volume of the cooling fan (31) and return to step S5. S7, judging whether the sensing temperature T2 of the second temperature sensor (62) is greater than or equal to T L ; If so, the impeller of the range fumes exhaust fan (11) drives the hot air to heat the volute, and after use, the power is turned off; If not, the impeller speed of the range fumes exhaust fan (11) is reduced and the process returns to step S7.

12. The control method of the refrigeration type range hood according to claim 11, characterized in that: The T L is 50°C, the T H is 90℃.

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