A refrigeration type range hood and a control method thereof

Abstract

A kind of refrigeration range hood and its control method, its oil fume suction module includes range hood, heat dissipation module includes condenser and heat dissipation fan, inner machine module includes evaporator and air outlet fan, also include water receiving box, the condensate of evaporator surface flows into water receiving box, the volute ring wall of range hood fan is opened with vent, heat dissipation fan outlet and vent are in fluid communication, water receiving box is connected with first water outlet pipe, first water outlet pipe water outlet end extends to the inside of range hood volute.The working time, the condensate flowing into water receiving box enters the inside of range hood volute by first water outlet pipe, using high temperature condensate to clean volute impeller, high temperature air blown by heat dissipation fan outlet washes volute impeller, slows down its oil accumulation rate.The range hood control method according to the signal received by temperature sensor correspondingly controls the working state of water pump, heater, range hood and heat dissipation fan and other components, and then improves fan cleaning effect and intelligent degree.

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] Various refrigeration type range hoods are disclosed in the prior art, which increase air conditioning components on the basis of the range hood platform, and the compressor, condenser and evaporator are connected through refrigerant pipelines. The refrigeration type range hood can realize all functions of the range hood and the function of the air conditioner. At present, the condensate water of the refrigeration range hood on the market is often discharged in an external way, which is discharged externally by punching a hole in the wall or introduced into the sewer through a pipeline, and does not have the ability to treat the condensate water alone and cannot consume the condensate water generated during refrigeration. In addition, during daily use, a large amount of oil stains will be left on the volute and impeller of the refrigeration range hood, and after a long time of air drying and solidification, a layer of hard grease will be formed on the volute and impeller, which is very difficult to clean.

[0003] The conventional range hood on the market often does not have a cleaning function, and even if the cleaning function is added, it only simply adds a water pump and a heating rod to heat and spray the added water for cleaning, which requires additional components and reduces the reliability of the whole machine. At the same time, it needs to add a water source from the outside, which increases the degree of complexity. Although the prior art also discloses a range hood that uses control condensate 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) which discloses an air conditioning type range hood. The machine shell is provided with a water collecting box for collecting condensate water condensed on the surface of the evaporator. A steam generator is installed in the machine shell. The water collecting box is connected to the water inlet of the steam generator through a water outlet pipe. The steam outlet of the steam generator is connected to the air duct inside the range hood. The air conditioning condensate water is evaporated by the steam generator and enters the inside of the range hood. The high-temperature water vapor passes through the impeller to clean the impeller. Although the air conditioning type range hood uses condensate water to clean the impeller, it needs to use the steam generator inside the machine shell to heat the condensate 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 refrigeration type range hood needs to be further improved. SUMMARY

[0004] The first technical problem to be solved by the present application is to provide a refrigeration type range hood that can use condensate water to clean the range hood and has good cleaning effect.

[0005] The second technical problem to be solved by the present application is to provide a cleaning method for a refrigeration type range hood with good cleaning effect and high intelligence level in view of the prior art.

[0006] The technical solution for solving 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 module, the oil fume suction module comprises an oil fume suction fan, the heat dissipation module comprises a condenser and a heat dissipation fan for dissipating heat of the condenser, the indoor module comprises an evaporator and an air outlet fan, the compressor, the condenser and the evaporator are connected through a refrigerant pipeline, and the refrigeration type range hood further comprises a water collecting box, condensed water on the surface of the evaporator can flow into the water collecting box, and the oil fume suction fan is characterized in that a vent is formed in the ring wall of the volute of the oil fume suction fan, the air outlet of the heat dissipation fan is in fluid communication with the vent, a first water outlet pipe is connected to the water collecting box, and the water outlet end of the first water outlet pipe extends into the volute of the oil fume suction fan.

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

[0008] As a preferred solution, a three-way valve and a water pump are mounted on the water collecting box, the water inlet of the three-way valve is in communication with 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 a second water outlet pipe, and the water outlet end of the second water outlet pipe is arranged on the condenser. In this way, the condensed water can be delivered to the condenser in addition to being delivered to the inside of the fan, so that the condenser can be cooled to improve the heat exchange efficiency.

[0009] As another preferred solution, the condenser is arranged below the evaporator, and the condensed water 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 collecting box, and a backwater pipe is mounted on the bottom of the condenser, so that the condensed water that is not consumed by the condenser flows into the water collecting box through the backwater pipe. In this way, the condensed water is heated by the condenser, so that the temperature of the condensed water is increased, and the high-temperature condensed water entering the volute is more conducive to improving the cleaning effect of the volute and the impeller.

[0011] In order to smoothly deliver the condensed water in the water collecting box to the inside of the fan volute, a water pump is mounted in the water collecting box, and the water outlet of the water pump is in communication with the water inlet end of the first water outlet pipe.

[0012] In order to realize intelligent cleaning and improve the cleaning effect of the oil fume fan, a heater is installed in the water collecting box, a first temperature sensor for detecting the water temperature of the water collecting box is installed in the water collecting box, a second temperature sensor for detecting the condenser is installed on the condenser, and a controller is further included, which can receive the output signal of the first temperature sensor and control the working state of the water pump, the heater and the oil fume fan according to the output signal, and can receive the output signal of the second temperature sensor and control the working state of the cooling fan according to the output signal. In this way, the controller can control the working state of the water pump, the heater, the oil fume fan and the cooling fan according to the received temperature sensor signal, thereby improving the cleaning effect and the intelligent degree of the fan.

[0013] In order to smoothly guide the hot air blown by the cooling fan into the fan, a guide plate for guiding the hot air blown by the cooling fan into the volute is installed at the air vent. In this way, the hot air entering the volute and the high-temperature condensed water entering the volute cooperate to slow down the oil accumulation rate in the volute, further improving the cleaning effect.

[0014] The guide plate can be installed at multiple different positions, preferably, the guide plate is close to the volute root of the oil fume fan.

[0015] Further preferably, the oil fume module has a fan frame and an air inlet body arranged at the bottom of the fan frame, the oil fume fan is installed in the fan frame, and the compressor, the cooling module and the indoor unit module are installed outside the fan frame.

[0016] The cooling module, the indoor unit module and the compressor can be installed at multiple different positions, preferably, the cooling fan of the cooling module is arranged at the top of the fan frame, the indoor unit module is arranged adjacent to the left and right of the cooling fan, and the compressor is arranged below the indoor unit module.

[0017] Further preferably, the oil fume fan is a centrifugal fan.

[0018] The technical solution adopted by the present application to solve the above-mentioned second technical problem is that the control method of the refrigeration type oil fume extractor includes the following steps:

[0019] S1, start;

[0020] S2, normal operation of the air conditioning mode;

[0021] determine whether to start the oil fume fan self-cleaning;

[0022] if yes, go to step S3;

[0023] if no, return to step S2;

[0024] S3, the oil smoke fan stops running;

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

[0026] If yes, enter step S6;

[0027] If no, the cooling fan speed is reduced, and returns to step S4;

[0028] S5, whether the cooling fan running reaches the set time;

[0029] If yes, enter step S6;

[0030] If no, return to step S5;

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

[0032] If yes, the water pump is started, the oil smoke fan starts running, and then enters step S7;

[0033] If no, the heater runs, and returns to step S6;

[0034] S7, whether the oil smoke fan running reaches the set time;

[0035] If yes, enter step S8;

[0036] If no, return to step S7;

[0037] S8, end.

[0038] Compared with the prior art, the advantages of the present application are that: the refrigeration type oil smoke extractor works in the refrigeration mode, the condensate water generated flows into the water receiving box, the condensate water in the water receiving box enters the volute inside the oil smoke fan through the first water outlet pipe, the volute impeller is cleaned by the high-temperature condensate water, at the same time, the high-temperature air blown out by the cooling fan air outlet blows the volute impeller, the high-temperature air and the high-temperature condensate water enter the volute inside at the same time, which can slow down the oil accumulation rate, thereby improving the effective use time of the oil smoke extractor, the controller of the oil smoke extractor can control the working state of the water pump, the heater, the oil smoke fan and the cooling fan and the like according to the signals received by the temperature sensor, thereby improving the fan cleaning effect and the intelligent degree. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a structure schematic view of the oil smoke extractor of the first embodiment of the present application;

[0040] Figure 2 It is a side view of the oil smoke extractor shown in the figure; Figure 1

[0041] Figure 3 It is​Figure 1 A partial structural diagram of the range hood shown;

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

[0043] Figure 5 This is a schematic diagram of the structure of the range hood according to Embodiment 2 of the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of the range hood according to Embodiment 3 of the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of the range hood according to Embodiment 4 of the present invention;

[0046] Figure 8 This is a schematic diagram of the structure of the range hood according to Embodiment 5 of the present invention;

[0047] Figure 9 This is a control logic diagram of the control method for a range hood according to an embodiment of the present invention. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0049] Example 1:

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

[0051] In this embodiment, the heat dissipation module 3 is located at 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. Along the airflow direction, the heat dissipation fan 32 is located downstream of the condenser 31. The indoor unit module 4 is located at the upper part of the range hood body and to the right of the heat dissipation module 3. The indoor unit module 4 includes an evaporator 41 and an outlet fan 42. Along the airflow direction, the outlet fan 42 is located downstream of the evaporator 41. The compressor 2 is located below the indoor unit module 4. The compressor 2, condenser 31, and evaporator 41 are connected by a refrigerant pipe 5. The compressor 2, condenser 31, and evaporator 41 constitute an air conditioning assembly, and its working principle is the same as that of existing air conditioners, which will not be described in detail here.

[0052] The volute 111 of the range hood 11 is provided with a vent 112, and the outlet of the cooling fan 32 is in fluid communication with the vent 112. A baffle 113 is installed at the vent 112, and in this embodiment, the baffle 113 is located close to the root of the volute tongue 114 of the range hood 11. The baffle 113 is used to guide the hot air blown by the cooling fan 32 into the volute 111.

[0053] A water collecting box 6 is installed outside the fan frame 12, and the water collecting box 6 is used to collect the condensed water condensed on the surface of the evaporator 41. The water collecting box 6 is provided with a three-way valve 8 and a water pump 9. The inlet of the three-way valve 8 is in communication with the outlet of the water pump 9. The first outlet of the three-way valve 8 is connected with the inlet of the first water outlet pipe 71, and the second outlet of the three-way valve 8 is connected with the inlet of the second water outlet pipe 72. The outlet of the first water outlet pipe 71 extends into the volute 111 of the range hood 11, and the outlet 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 collecting box 6, and the bottom of the condenser 31 is provided with a backwater pipe 73. The condensed water that is not consumed by the condenser 31 flows into the water collecting box 6 through the backwater pipe 73. During the process of flowing through the surface of the condenser 31, part of the condensed water is consumed by the condenser 31 due to the high temperature of the condenser 31. The condensed water that is not consumed is heated and flows into the water collecting box 6, thereby increasing the temperature of the condensed water in the water collecting box 6.

[0055] During operation, the condensed water in the water collecting box 6 can be output in two ways under the action of the water pump 9. By switching the three-way valve 8, the water can be selected to be output from the first water outlet pipe 71 and then into the volute 111, thereby cleaning the volute and the impeller. The water can also be selected to be output from the second water outlet pipe 72 and then flow to the condenser 31, thereby cooling the condenser 31. At the same time, the high-temperature air blown by the cooling fan 32 enters the volute 111 through the vent 112, thereby blowing and cleaning the volute and the impeller. The high-temperature air and the high-temperature condensed water enter the volute at the same time, thereby slowing down the oil accumulation rate.

[0056] When the system is started in the self-cleaning mode, the range hood 11 stops rotating, and the cooling fan 32 blows the hot air passing through the condenser 31 to the volute impeller of the range hood 11. When the temperature detected at the middle part of the condenser 31 is not high enough, the rotating speed of the cooling fan 32 is reduced to maintain the temperature of the blown air. Then, the three-way valve 8 is switched, 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 11 starts to rotate and maintains a certain time, thereby achieving the purpose of cleaning.

[0057] Embodiment Two:

[0058] As Figure 5As shown, in this embodiment, the condenser 31 is located below the evaporator 41, and the condensate water condensed on the surface of the evaporator 41 flows to the condenser 31 through a water pipe. The remaining structure and working principle of this embodiment are the same as those of Embodiment 1, and will not be described in detail here.

[0059] Example 3:

[0060] like Figure 6 As shown, in this embodiment, a water pump 9 is installed inside the water receiving box 6, and the outlet of the water pump 9 is connected to the inlet of the first outlet pipe 71. Compared with Embodiment 1, the three-way valve is omitted. The condensate in the water receiving box 6 is directly transported to the volute of the range hood 11 through the water pump 9 and the first outlet pipe 71 to clean the volute and impeller. The remaining structure and working principle of this embodiment are the same as those of Embodiment 1, and will not be described further here.

[0061] Example 4:

[0062] like Figure 7 As shown, compared with Embodiment 3, the condenser 31 in this embodiment is located below the evaporator 41. The condensate water condensed on the surface of the evaporator 41 flows to the condenser 31 through a water pipe. The rest of the structure is the same as that in Embodiment 3, and will not be described in detail here.

[0063] Example 5:

[0064] like Figure 8 As shown, compared with Embodiment 4, the cooling range hood of this embodiment, based on Embodiment 3, has a heater 10 installed in the water receiving box 6, a first temperature sensor (not shown) for detecting the water temperature in the water receiving box 6, a second temperature sensor (not shown) for detecting the temperature of the condenser 31 installed on the condenser 31, and a controller (not shown). The controller can receive the output signal of the first temperature sensor and control the working state of the water pump 9, the heater 10 and the range hood fan 11 accordingly based on the output signal. The controller can also receive the output signal of the second temperature sensor and control the working state of the cooling fan 32 accordingly based on the output signal.

[0065] like Figure 9 As shown, the control method for the refrigerated range hood in this embodiment includes the following steps:

[0066] S1, Begin;

[0067] S2, Air conditioning mode is operating normally;

[0068] Determine if the range hood's self-cleaning function has started;

[0069] If so, proceed to step S3;

[0070] If not, return to step S2;

[0071] S3, the oil smoke fan stops running;

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

[0073] If yes, go to step S6;

[0074] If no, the cooling fan speed is reduced, and return to step S4;

[0075] S5, whether the cooling fan running reaches the set time;

[0076] If yes, go to step S6;

[0077] If no, return to step S5;

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

[0079] If yes, the water pump is started, the oil smoke fan starts running, and then go to step S7;

[0080] If no, the heater runs, and return to step S6;

[0081] S7, whether the oil smoke fan running reaches the set time;

[0082] If yes, go to step S8;

[0083] If no, return to step S7;

[0084] S8, end.

[0085] From the above control logic, when the system starts the self-cleaning mode, the oil smoke fan 11 stops rotating, the cooling fan 32 blows the hot air through the condenser 31 to the volute impeller of the oil smoke fan 11. When the second temperature sensor detects that the middle temperature of the condenser 31 is not high enough, the controller controls the cooling fan 32 to reduce the speed to maintain the temperature of the blown air. When the second temperature sensor detects that the middle temperature of the condenser reaches the set value, the cooling fan 32 runs for a set time, and when the first temperature sensor detects that the water temperature of the water receiving box 6 reaches the set value, the water pump is started, the oil smoke fan 11 starts running, and the high-temperature condensed water is used to clean the volute impeller. When the water temperature of 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, ensuring that the high-temperature condensed water is sprayed to the volute impeller. At this time, the oil smoke fan 11 starts running and maintains for a certain time to achieve the purpose of cleaning.

Claims

1. A refrigerated range hood, comprising a fume extraction module (1), a compressor (2), a heat dissipation module (3), and an indoor unit module (4), wherein the fume extraction module (1) includes a fume extraction fan (11), the heat dissipation module (3) includes a condenser (31) and a heat dissipation fan (32) for dissipating heat from the condenser (31), and the indoor unit module (4) includes an evaporator (41) and an exhaust fan (42), wherein the compressor (2), the condenser (31), and the evaporator (41) are connected by a refrigerant pipeline (5), and further includes a water collection box (6) into which condensate on the surface of the evaporator (41) can flow into the water collection box (6), characterized in that: The oil fume suction fan (11) is a centrifugal fan, a vent (112) is formed in the ring wall of the volute (111) of the oil fume suction fan (11), the air outlet of the heat dissipation fan (32) is in fluid communication with the vent (112), the water receiving box (6) is connected with a first water outlet pipe (71), the water outlet end of the first water outlet pipe (71) extends into the volute (111) of the oil fume suction fan (11), a water pump (9) is installed in the water receiving box (6), the water outlet of the water pump (9) is in communication with the water inlet end of the first water outlet pipe (71), 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 further provided, which can receive the output signal of the first temperature sensor and control the working state of the water pump (9), the heater (10) and the oil fume suction fan (11) according to the output signal, and can receive the output signal of the second temperature sensor and control the working state of the heat dissipation fan (32) according to the output signal.

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

3. The refrigerated extractor 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 in communication with the water outlet of the water pump (9), the first water outlet of the three-way valve (8) is connected with the water inlet end of the first water outlet pipe (71), the second water outlet of the three-way valve (8) is connected with the water inlet end of a 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 refrigerated extractor hood according to claim 1, characterized in that: The condenser (31) 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.

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

6. 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 out by the heat dissipation fan (32) into the volute (111).

7. The refrigerated extractor hood according to claim 6, characterized in that: The guide vane (113) is close to the root of the volute tongue (114) of the oil fume suction fan (11).

8. The refrigerated extractor hood according to any of claims 1 to 7, characterized in that: The oil fume suction module (1) has a fan frame (12) and an air inlet body (13) arranged at the bottom of the fan frame (12), the oil fume suction fan (11) is installed in the fan frame (12), the compressor (2), the heat dissipation module (3) and the indoor unit module (4) are installed outside the fan frame (12).

9. The refrigerated extractor hood according to claim 8, characterized in that: The heat dissipation fan (32) of the heat dissipation module (3) is arranged at the top of the fan frame (12), the indoor unit module (4) is arranged adjacent to the left and right of the heat dissipation fan (32), and the compressor (2) is arranged below the indoor unit module (4).

10. A control method of a refrigerating range hood, characterized by: The control method is applied to the refrigeration type range hood of claim 1, and comprises the following steps: S1, starting; S2, normal operation of the air conditioning mode; judging whether to start the self-cleaning of the range hood; if yes, entering step S3; if no, returning to step S2; S3, stopping operation of the range hood; S4, judging whether the middle temperature of the condenser reaches a set value; if yes, entering step S6; if no, reducing the rotating speed of the cooling fan and returning to step S4; S5, judging whether the operation of the cooling fan reaches a set time; if yes, entering step S6; if no, returning to step S5; S6, judging whether the water temperature of the water box reaches a set value; if yes, starting the water pump and the operation of the range hood, and then entering step S7; if no, operating the heater and returning to step S6; S7, judging whether the operation of the range hood reaches a set time; if yes, entering step S8; if no, returning to step S7; S8, ending.

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