A refrigeration type range hood and a control method thereof

Abstract

A kind of refrigeration range hood and its control method, the oil fume suction module of the refrigeration range hood includes oil fume fan, the vent is opened in the volute ring wall of oil fume fan, the heat dissipation module has heat dissipation fan, the air outlet of heat dissipation fan is in fluid communication with vent, first temperature sensor is installed at vent, second temperature sensor is installed at the air outlet of oil fume fan, controller can receive the output signal of first temperature sensor and second temperature sensor, and according to the signal received, the rotating speed of oil fume fan and / or heat dissipation fan is controlled accordingly.The refrigeration range hood introduces the high-temperature airflow of heat dissipation into the volute inside oil fume fan by heat dissipation fan, and the volute and impeller are cleaned, while improving the heat exchange efficiency of condenser, in addition, the rotating speed of heat dissipation fan and oil fume fan is automatically adjusted according to the temperature at vent and the air outlet of fan, so as to ensure that the volute and impeller are deeply and efficiently cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to a range hood, in particular to a refrigeration type range hood and a control method thereof. BACKGROUND

[0002] There are various refrigeration type range hoods in the prior art, which add air conditioning components to the range hood platform, and the compressor, condenser and evaporator are connected through refrigerant pipelines. The refrigeration type range hood can realize all the functions of the range hood and the functions of the air conditioner. In the daily use process of the refrigeration type range hood on the market, a large amount of oil dirt will be left on the volute and impeller. After a long time of air drying and solidification, a hard grease layer will be formed on the volute and impeller, which is very difficult to clean. The existing volute cleaning technology is to heat the water in the steam generator by adding water from the outside, form high-temperature water vapor, and then spray it on the volute and impeller for cleaning. Since it needs to add an additional water source from the outside for range hood cleaning, it is more troublesome to use. For example, the Chinese utility model patent with the patent number CN202220678174.3 (the authorized announcement number is CN 217271065 U) discloses a "fan cleaning device and application of the range hood with the fan cleaning device", which discloses that a hole is opened on the volute ring wall, and cleaning liquid is sprayed into the volute through the hole to clean the volute and impeller. Although there are also range hoods in the prior art that use condensed water to clean the volute, such as the Chinese utility model patent with the patent number 202220018984.6 (the authorized announcement number is CN 217004584 U) discloses an "air conditioner type range hood". The range hood has a water collecting box for collecting condensed water on the surface of the evaporator. A steam generator is installed inside the machine shell. The water collecting box is connected to the water inlet of the steam generator through the water outlet pipe. The steam outlet of the steam generator is connected to the air duct inside the range hood. The air conditioner condensed water is evaporated by the steam generator and enters the inside of the range hood. The high-temperature water vapor passes through the fan impeller to clean the impeller. Although the air conditioner type range hood uses air conditioner condensed water to clean the fan impeller, it needs to use the steam generator inside the machine shell to heat the condensed water, which not only has a complex structure, but also increases the cost. The heat generated by the condenser during the operation of the air conditioner is not effectively utilized. In view of the above, the existing air conditioner type range hood needs to be further improved. SUMMARY

[0003] The first technical problem to be solved by the present application 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.

[0004] The second technical problem to be solved by the present application is to provide a control method of a refrigeration type range hood capable of intelligently adjusting the air volume of an oil fume fan and a heat dissipation fan and realizing efficient cleaning of a volute and an impeller.

[0005] The technical solution adopted by the present application to solve the first technical problem is as follows: the refrigeration type range hood comprises an oil fume suction module, a compressor, a heat dissipation module and an indoor unit module, the oil fume suction module comprises an oil fume fan, the compressor, the heat dissipation module and the indoor unit module are connected in communication through a refrigerant pipeline, and the oil fume fan is characterized in that a ventilation opening is formed in the ring wall of the volute of the oil fume fan, the heat dissipation module is provided with a heat dissipation fan, the air outlet of the heat dissipation fan is in fluid communication with the ventilation opening, a first temperature sensor is installed at the ventilation opening, a second temperature sensor is installed at the air outlet of the oil fume fan, and a controller is further included, which can receive the output signals of the first temperature sensor and the second temperature sensor and control the rotation speed of the oil fume fan and / or the heat dissipation fan according to the received signals.

[0006] In order to smoothly guide the hot air blown by the heat dissipation fan into the volute, a wind deflector is installed at the ventilation opening to guide the hot air blown by the heat dissipation fan into the volute.

[0007] In order to effectively clean the volute and the impeller by the hot air blown by the heat dissipation fan, the wind deflector guides the hot air blown by the heat dissipation fan into the gap between the impeller and the ring wall of the volute, and the air outlet direction of the heat dissipation fan is consistent with the flow direction of the oil fume gas flow at the gap.

[0008] Further preferably, a volute tongue is installed on the volute of the oil fume fan, and the wind deflector is close to the root of the volute tongue.

[0009] Further preferably, the oil fume fan is a centrifugal fan.

[0010] Preferably, the oil fume suction module comprises an upper cabinet and an air inlet body arranged at the bottom of the upper cabinet, the oil fume fan is installed inside the upper cabinet, and an oil inlet is formed in the air inlet body and in communication with the air inlet of the oil fume fan.

[0011] The compressor and the indoor unit module can be arranged at multiple different positions, preferably, the compressor is arranged above the air inlet body and at the left side or the right side of the upper cabinet, and the indoor unit module is arranged above the compressor.

[0012] In order to make the hot air blown by the heat dissipation fan quickly flow to the ventilation opening, the heat dissipation module is arranged at the top of the upper cabinet, the heat dissipation fan is arranged above the oil fume fan, the air outlet of the heat dissipation fan faces downward and is directed toward the ventilation opening.

[0013] The heat dissipation module and the inner machine module can have multiple installation positions, preferably, the heat dissipation module comprises a condenser and a heat dissipation fan, the inner machine module comprises an evaporator and an inner machine fan, the heat dissipation module and the inner machine module are arranged adjacently, and the heat dissipation module and the inner machine module share an air inlet.

[0014] In order to enable cold air to be blown out of the shell of the range hood, an inner machine air outlet is formed on the upper cabinet or the air inlet body, and the air outlet of the inner machine fan is in fluid communication with the inner machine air outlet through a wind guide channel.

[0015] The technical scheme adopted by the present application to solve the second technical problem is that the control method is applied to the refrigeration range hood of claim 4, and the control method comprises the following steps:

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

[0017] S2, it is judged whether the refrigeration mode is turned on;

[0018] If yes, step S3 is entered;

[0019] If no, step S4 is entered;

[0020] S3, it is judged whether the cleaning mode is turned on;

[0021] If yes, step S5 is entered;

[0022] If no, the temperature is adjusted according to the user's demand, and the power is turned off after use;

[0023] S4, it is judged whether the cleaning mode is turned on;

[0024] If yes, the compressor is started, the heat dissipation fan is turned on, and then step S5 is entered;

[0025] If no, the gear of the range hood is adjusted according to the user's demand, and the power is turned off after use;

[0026] S5, it is judged whether the sensing temperature T1 of the first temperature sensor is greater than or equal to TL;

[0027] If yes, step S6 is entered;

[0028] If no, the air volume of the heat dissipation fan is reduced, and step S5 is returned to;

[0029] S6, it is judged whether T1 is less than TH;

[0030] If yes, the impeller of the range hood is started to rotate, and then step S7 is entered;

[0031] If no, the air volume of the heat dissipation fan is increased, and step S5 is returned to

[0032] S7, judging whether the sensed temperature T2 of the second temperature sensor is greater than or equal to TL;

[0033] If yes, the impeller of the range hood drives the hot air to heat the volute, and after use, the power is turned off.

[0034] If no, the rotation speed of the impeller of the range hood is reduced, and the step S7 is returned.

[0035] Further preferably, the TL is 50 DEG C, and the TH is 90 DEG C.

[0036] Further preferably, the optimal value of TL is 70 DEG C, and the optimal value of TH is 75 DEG C.

[0037] Compared with the prior art, the advantages of the present application are that the vent is opened on the volute ring wall of the range hood, the outlet of the cooling fan of the heat dissipation module is in fluid communication with the vent, so that the high-temperature cooling air can be introduced into the volute of the range hood and taken away by the range hood, on the one hand, the heat of the condenser is effectively utilized to clean the volute and the impeller, which is beneficial to prolong the service life of the range hood, on the other hand, the heat of the condenser is discharged outward by the range hood, which can improve the heat exchange efficiency of the condenser and further 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 cooling fan and the range hood according to the temperature at the vent and the outlet of the fan, so that the wind temperature inside the range hood is maintained in a temperature range 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 DRAWINGS

[0038] Figure 1 Fig. 1 is a structural schematic diagram of the range hood of the embodiment of the present application;

[0039] Figure 2 Fig. 2 is a schematic diagram of the internal structure of the range hood of the embodiment of the present application;

[0040] Figure 3 Fig. 3 is a connection schematic diagram of the air conditioning assembly of the embodiment of the present application;

[0041] Figure 4 Fig. 4 is a logic control diagram of the control method of the embodiment of the present application. DETAILED DESCRIPTION

[0042] The present application will be further described in detail below in combination with the embodiment of the drawings.

[0043] As Figures 1 to 3As shown, the refrigeration type range hood of the embodiment comprises a range hood module 1, a compressor 2, a heat dissipation module 3 and an indoor unit module 4. The range hood module 1 comprises an upper cabinet 12 and an air inlet body 13 arranged at the bottom of the upper cabinet 12. A range hood fan 11 is arranged inside the upper cabinet 12. The air inlet body 13 is provided with a smoke inlet which is in communication with the air inlet of the range hood fan 11. An oil cup 7 is arranged at the bottom of the air inlet body 13.

[0044] In the embodiment, the compressor 2 is arranged above the air inlet body 13 and at the right side of the upper cabinet 12. The indoor unit module 4 is arranged above the compressor 2. The heat dissipation module 3 is arranged at the top of the upper cabinet 12 and at the left side of the indoor unit module 4.

[0045] The heat dissipation module 3 comprises a condenser 32 and a heat dissipation fan 31. 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 adjacently and share the air inlet. Figure 3 As shown, the compressor 2, the condenser 32 and the evaporator 42 constitute an air conditioning assembly and are in communication through a refrigerant pipeline 5.

[0046] The range hood fan 11 is a centrifugal fan. The range hood fan 11 is provided with a ventilation opening 112 on the volute ring wall 111. The heat dissipation fan 31 is arranged above the range hood fan 11. The air outlet of the heat dissipation fan 31 faces downward and toward the ventilation opening 112. A deflector 113 is arranged at the ventilation opening 112 and close to the root of the volute tongue 115. The deflector 113 guides the hot air blown by the heat dissipation fan 31 into the volute. Specifically, the deflector 113 guides the hot air blown by the heat dissipation fan 31 into the gap 114 between the impeller of the range hood fan 11 and the volute ring wall. The air outlet direction of the heat dissipation fan 31 is consistent with the flow direction of the oil smoke at the gap 114. A first temperature sensor 61 is arranged at the ventilation opening 112. A second temperature sensor 62 is arranged at the air outlet of the range hood fan 11. A controller (not shown in the figure) can receive the output signals of the first temperature sensor 61 and the second temperature sensor 62 and control the rotating speed of the range hood fan 11 and / or the heat dissipation fan 31 according to the received signals.

[0047] As shown in Figure 1 and Figure 2 The indoor unit module 4 is arranged above the air inlet body 13. The indoor unit module 4 is arranged at the left side of the heat dissipation module 3. The indoor unit module 4 is arranged at the right side of the compressor 2. The indoor unit module 4 is arranged at the left side of the upper cabinet 12.

[0048] In the normal refrigeration mode, the temperature of the condenser 32 can reach 70℃, and the heat dissipated by the condenser 32 is discharged into the public flue together with the oil smoke fan 11, thereby improving the heat exchange efficiency of the condenser and the energy efficiency of the air conditioner. At the same time, the heat of the condenser 32 is blown into the volute of the oil smoke fan 11 by the cooling fan 31, which heats the volute and impeller, so that the oil dirt on the volute and impeller melts and flows into the oil cup 7, thereby cleaning the volute and impeller by hot air, and the heat of the condenser 32 is effectively utilized.

[0049] As shown in Figure 4 , the control method of the refrigeration type oil smoke fan of the embodiment comprises the following steps:

[0050] S1, the power of the smoke fan is turned on;

[0051] S2, it is judged whether the refrigeration mode is turned on;

[0052] If yes, step S3 is entered;

[0053] If no, step S4 is entered;

[0054] S3, it is judged whether the cleaning mode is turned on;

[0055] If yes, step S5 is entered;

[0056] If no, the temperature is adjusted according to the user's demand, and the power is turned off after use;

[0057] S4, it is judged whether the cleaning mode is turned on;

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

[0059] If no, the gear of the oil smoke fan 11 is adjusted according to the user's demand, and the power is turned off after use;

[0060] S5, it is judged whether the sensing temperature T1 of the first temperature sensor 61 is greater than or equal to TL;

[0061] If yes, step S6 is entered;

[0062] If no, the air volume of the cooling fan 31 is reduced, and the step S5 is returned to;

[0063] S6, it is judged whether T1 is less than TH;

[0064] If yes, the impeller of the oil smoke fan 11 is started to rotate, and then step S7 is entered;

[0065] If no, the air volume of the cooling fan 31 is increased, and the step S5 is returned to

[0066] S7, judging whether the sensed temperature T2 of the second temperature sensor 62 is greater than or equal to TL;

[0067] If yes, the impeller of the range hood 11 drives the hot air to heat the volute, and after use, the power is turned off.

[0068] If no, the rotation speed of the impeller of the range hood 11 is reduced, and the process returns to step S7.

[0069] wherein TL=50℃ and TH=90℃.

[0070] The optimal value of TL is 70℃, and the optimal value of TH is 75℃.

[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 cooling fan 31, and when the air conditioner is normally operated in the cooling mode, the TL temperature reached by the condenser 32 is continuously introduced into the volute to heat the volute and the impeller. When the temperature detected by the first temperature sensor 61 is lower than 50℃, the rotation speed of the cooling fan 31 is reduced to increase the temperature of the cooling air, thereby effectively cleaning the volute and the impeller. In addition, the heat of the cooling needs to be discharged to the outside through the range hood 11. Since the impeller of the range hood 11 is started to rotate, the high-temperature air is disturbed and cooled, so that the wind temperature is reduced, thereby reducing the cleaning effect of the volute. Therefore, the temperature of the air inside the range hood 11 needs to be controlled. When the second temperature sensor 62 at the air outlet of the range hood 11 detects that the temperature is lower than 50℃, the rotation speed of the range hood 11 is reduced to increase the temperature of the cooling air, 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 module (4), the range hood module (1) comprising a range hood fan (11), the compressor (2), the heat dissipation module (3) and the indoor module (4) being connected through a refrigerant pipeline (5), characterized in that: The oil smoke fan (11) has a vent (112) on the volute ring wall (111), the heat dissipation module (3) has a heat dissipation fan (31), the outlet of the heat dissipation fan (31) is in fluid communication with the vent (112), a first temperature sensor (61) is installed at the vent (112), a second temperature sensor (62) is installed at the outlet of the oil smoke fan (11), and a controller is further included, which can receive the output signals of the first and second temperature sensors (61) and (62) and control the rotation speed of the oil smoke fan (11) and / or the heat dissipation fan (31) according to the received signals.

2. The refrigerated extractor hood according to claim 1, characterized in that: A guide vane (113) is installed at the vent (112) to guide the hot air blown by the heat dissipation fan (31) into the volute.

3. The refrigerated extractor hood according to claim 2, characterized in that: The guide vane (113) guides the hot air blown by the heat dissipation fan (31) into the gap (114) between the impeller and the volute ring wall of the oil smoke fan (11), and the outlet direction of the heat dissipation fan (31) is consistent with the flow direction of the oil smoke gas flow at the gap (114).

4. The refrigerated extractor hood according to claim 2, characterized in that: A volute tongue (115) is installed on the volute of the oil smoke fan (11), and the guide vane (113) is close to the root of the volute tongue (115).

5. The refrigerated extractor hood according to any of claims 1 to 4, characterized in that: The oil smoke module (1) includes an upper cabinet (12) and an air inlet body (13) arranged at the bottom of the upper cabinet (12), the oil smoke fan (11) is installed inside the upper cabinet (12), and the air inlet body (13) has an oil smoke inlet opening that is in communication with the air inlet opening of the oil smoke fan (11).

6. The refrigerated extractor hood according to claim 5, characterized in that: The compressor (2) is installed above the air inlet body (13) and on the left side or the right side of the upper cabinet (12), and the indoor unit module (4) is arranged above the compressor (2).

7. The refrigerated extractor hood according to claim 5, characterized in that: The heat dissipation module (3) is arranged on the top of the upper cabinet (12), the heat dissipation fan (31) is arranged above the oil smoke fan (11), and the outlet of the heat dissipation fan (31) faces downward and toward the vent (112).

8. The refrigerated extractor hood according to claim 5, characterized in that: The heat dissipation module (3) includes a condenser (32) and the heat dissipation fan (31), 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 adjacently, and the heat dissipation module (3) and the indoor unit module (4) share the air inlet opening.

9. The refrigerated extractor hood according to claim 8, characterized in that: An indoor unit air outlet (43) is formed on the upper cabinet (12) or the air inlet body (13), and the outlet of the indoor unit fan (41) is in fluid communication with the indoor unit air outlet (43) through a guide channel (44).

10. A control method of a refrigerating range hood, characterized by: The control method is applied to the oil smoke fan with refrigeration function as claimed in any one of claims 1 to 9, and includes the following steps: S1, turning on the power supply of the oil smoke fan; S2, determining whether the refrigeration mode is turned on; If yes, entering step S3; If no, entering step S4; S3, determining whether the cleaning mode is turned on; If yes, entering step S5; If no, adjusting the temperature according to the user's demand, and turning off the power supply after use. S4, judging whether to start the cleaning mode; If yes, the compressor (2) starts, the heat dissipation fan (31) starts, and then enters step S5; If no, adjusting the gear of the oil fume fan (11) according to the user's demand, using up, and shutting down the power supply; S5, judging whether the sensing temperature T1 of the first temperature sensor (61) is greater than or equal to TL; If yes, entering step S6; If no, reducing the air volume of the heat dissipation fan (31), and returning to step S5; S6, judging whether T1 is less than TH; If yes, the impeller of the oil fume fan (11) starts to rotate, and then enters step S7; If no, increasing the air volume of the heat dissipation fan (31), and returning to step S5 S7, judging whether the sensing temperature T2 of the second temperature sensor (62) is greater than or equal to TL; If yes, the hot air drives the impeller of the oil fume fan (11) to heat the volute, using up, and shutting down the power supply; If no, reducing the rotating speed of the impeller of the oil fume fan (11), and returning to step S7.

11. The control method of the refrigerating range hood according to claim 10, characterized in that: The TL is 50℃, and the TH is 90℃.

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