Refrigeration type range hood and control method thereof

Abstract

The invention relates to a refrigeration type range hood and a control method thereof, the refrigeration type range hood comprises a fan frame, an oil smoke suction fan is arranged in the fan frame, an air conditioning assembly is arranged outside the fan frame, a refrigerant pipeline between a compressor and a condenser forms an exhaust pipe, and a heating water tank and a heat dissipation fan are arranged outside the fan frame. Condensed water on the surface of the evaporator flows into the heating water tank after being heated by the condenser, the outlet end of an air spraying pipe externally connected with the heating water tank is divided into two air outlets, one air outlet is communicated with a condensed water discharging pipe, the other air outlet is communicated with a cleaning pipe for cleaning the oil smoke suction fan, and the cooling fan cools the condenser. High-temperature and high-pressure water vapor of the heating water tank of the refrigeration type range hood can be discharged through the condensate water discharging pipe, the oil smoke suction fan can be cleaned through the cleaning pipe, on one hand, effective utilization of condensate water is achieved, and on the other hand, the energy efficiency of an air conditioner is improved; according to the control method, the air volume of the cooling fan can be intelligently controlled according to different water temperatures, water levels and exhaust pipe temperatures of the heating water tank, and the intelligent degree is high.

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 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 range hood can realize all the functions of the range hood and the function of the air conditioner. The condensed water of the refrigeration range hoods currently on the market is often discharged externally, by drilling holes in the wall for external discharge or introducing the condensed water into the sewer pipe through a pipe for external discharge. The condensed water is not capable of being processed separately, thereby increasing the installation cost. In addition, traditional range hoods on the market often do not have a cleaning function. Even if a cleaning function is added, it is only a simple addition of a water pump and a heating rod to heat and spray the water added from the outside for cleaning. It is necessary to add additional parts to heat the water to achieve the effect of vaporization spraying, thereby reducing the reliability of the whole machine. In addition, when cleaning the fan of the range hood, it is necessary to add an additional water source from the outside, which is inconvenient. In summary, the existing refrigeration range hoods need to be further improved. 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 condensed water in view of 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 with a high degree of intelligence and effective utilization of condensed water 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 comprises a fan frame, a range hood fan is installed inside the fan frame, and an air conditioning component is installed outside the fan frame, the air conditioning component comprises a compressor, a condenser and an evaporator, the compressor, condenser and evaporator are connected by a refrigerant pipeline, and the refrigerant pipeline between the compressor and the condenser forms an exhaust pipe, which is characterized in that: a heating water tank and a heat dissipation fan are arranged outside the fan frame, the condensed water condensed on the surface of the evaporator flows through the condenser and then flows into the heating water tank after being heated, the heating water tank is externally connected to an injection pipe, and the outlet end of the injection pipe is divided into two air outlets, one of which is connected to the condensed water discharge pipe, and the other is connected to the cleaning pipe used to clean the range hood fan, and the heat dissipation fan is used to dissipate heat from the condenser.

[0006] In order to allow the heat of the condenser to be taken away by the range fumes exhaust fan, a heat dissipation hole is opened on the fan frame, and the air outlet of the heat dissipation fan is connected with the air inlet of the range fumes exhaust fan through the heat dissipation hole.

[0007] In order to ensure that the high-temperature and high-pressure gas ejected from the jet pipe can be smoothly divided into two, a three-way valve is installed at the outlet end of the jet pipe, the first port of the three-way valve is connected to the water outlet end of the jet pipe, the second port of the three-way valve is connected to the condensate discharge pipe, and the third port of the three-way valve is connected to the cleaning pipe.

[0008] In order to heat the water in the heating water tank, the exhaust pipe is arranged in the heating water tank. Since the temperature of the exhaust pipe is relatively high, when the temperature of the exhaust pipe is maintained above 100°C, the condensed water in the heating water tank can be heated continuously and stably. This ensures that the heated condensed water can continuously and stably form high-temperature and high-pressure gas. In addition, the condensed water is fully utilized to cool the exhaust pipe, which is beneficial to improving the cooling power of the unit.

[0009] In order to transport the condensed water to the condenser, a water receiving pan is installed under the evaporator, and the condensed water in the water receiving pan is transported to the surface of the condenser through a water pipe. In this way, on the one hand, the condensed water dissipates heat from the condenser to improve its heat exchange efficiency, and on the other hand, the condensed water in the condenser is heated, and the heated hot water flows into the heating water tank.

[0010] In order to detect the water level of the heating water tank, a water level sensor is installed in the heating water tank.

[0011] In order to detect the water temperature in the heating water tank, a water tank temperature sensing package is installed in the heating water tank.

[0012] In order to detect the temperature of the exhaust pipe, an exhaust pipe temperature sensing package is installed on the exhaust pipe.

[0013] In order to clean the volute and the impeller of the range fumes exhaust fan, the cleaning pipe extends into the volute of the range fumes exhaust fan.

[0014] The technical solution adopted by the present invention to solve the second technical problem is: a control method of the refrigeration range hood, characterized in that the control method comprises the following steps:

[0015] S1, the range hood turns on the cooling mode;

[0016] S2: Determine whether the water level in the heating water tank is lower than the minimum requirement.

[0017] If yes, the three-way valve is closed and the process proceeds to step S3;

[0018] If not, proceed to step S4;

[0019] S3: Determine whether the exhaust pipe temperature is greater than 100°C.

[0020] If yes, the air volume of the cooling fan is increased, the water level of the heating water tank rises, and the process returns to step S2;

[0021] If not, the air volume of the cooling fan is maintained, the water level of the heating water tank is raised, and the process returns to step S2;

[0022] S4, determining whether to start the range hood cleaning mode;

[0023] If yes, the three-way valve leads to the cleaning pipe, and then proceeds to step S5;

[0024] If not, the three-way valve leads to the condensate discharge pipe, and then enters step S5;

[0025] S5: Determine whether the exhaust pipe temperature is greater than 100°C.

[0026] If yes, the air volume of the cooling fan is maintained and the process proceeds to step S6;

[0027] If not, the air volume of the cooling fan is reduced, and then the process goes to step S6;

[0028] S6, high temperature and high pressure gas ejection;

[0029] S7, cooker hood shut down

[0030] Compared with the prior art, the advantages of the present invention are: a heating water tank and a heat dissipation fan are arranged outside the fan frame of the refrigeration type range hood, and the condensed water condensed on the surface of the evaporator flows through the condenser for heating and then flows into the heating water tank. When the water temperature of the heating water tank is higher than 100°C, the high-temperature and high-pressure water vapor can be discharged through the condensed water discharge pipe, and the range hood fan can also be cleaned through the cleaning pipe. Self-cleaning of the fan and the flue is achieved without the need for external assistance. On the one hand, effective utilization of condensed water is achieved without the need to add additional drain pipes. On the other hand, the energy efficiency of the air conditioner is improved by dissipating the heat of the condenser. The control method can intelligently control the air volume of the heat dissipation fan according to the water temperature, water level and exhaust pipe temperature of the heating water tank. It has a high degree of intelligence and is very energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0032] Figure 2 A connection diagram of an air conditioning assembly according to an embodiment of the present invention;

[0033] Figure 3 This is a logic control diagram of the control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, the refrigeration type range hood of this embodiment includes a fan frame 1, and a range hood fan 2 is installed inside the fan frame 1. An air conditioning component is installed outside the fan frame 1, and the air conditioning component includes a compressor 3, a condenser 4 and an evaporator 5. The compressor 3, the condenser 4 and the evaporator 5 are connected through a refrigerant pipeline, and the refrigerant pipeline between the compressor 3 and the condenser 4 forms an exhaust pipe 6. The working principle of the air conditioning component is the same as that of the existing air conditioner, and will not be described in detail here.

[0036] A heating water tank 7 exhaust pipe 6 is also installed outside the fan frame 1, and a portion of the exhaust pipe 6 is buried in the heating water tank 7. A water level sensor 15 and a water tank temperature sensing package 16 are installed in the heating water tank 7. The water level sensor 15 is used to detect the water level of the heating water tank 7, and the water tank temperature sensing package 16 is used to detect the water temperature of the heating water tank 7. In addition, an exhaust pipe temperature sensing package 17 is installed on the exhaust pipe 6 outside the heating water tank 7 to detect the temperature of the exhaust pipe 6 outside the heating water tank 7.

[0037] A water receiving pan 13 is installed under the evaporator 5. The condensed water in the water receiving pan 13 is transported to the surface of the condenser 4 through the water pipe 14. The condensed water condensed on the surface of the evaporator 5 flows through the condenser 4 and is heated before flowing into the heating water tank 7. While the condensed water is being heated, the condenser 4 also effectively dissipates heat, which is beneficial to improving the energy efficiency of the air conditioner. Usually, the surface temperature of the condenser is relatively high, which can reach above 70°C. The temperature of the exhaust pipe 6 connected to the compressor 3 can reach above 100°C. During cooling, the evaporator 5 will produce enough condensed water. The exhaust pipe 6 in the heating water tank 7 can perform secondary heating on the condensed water. On the other hand, the condensed water cools down the exhaust pipe 6, which is beneficial to improving the cooling efficiency.

[0038] In order to further dissipate the heat of the condenser 4, a heat dissipation fan 8 is also installed outside the fan frame 1, and the heat dissipation fan 8 dissipates the heat of the condenser 4. There are many ways to dissipate the heat of the condenser 4. The heat of the condenser 4 can be directly discharged by the heat dissipation fan 8, such as discharged to the smoke pipe, or a heat dissipation hole can be opened on the fan frame 1. The air outlet of the heat dissipation fan 8 is connected to the air inlet of the range hood fan 2 through the heat dissipation hole, that is, the heat of the condenser 4 is finally discharged to the outside through the range hood fan 2. The cold energy of the evaporator 5 is blown out through the air outlet fan 18, and the cold air is blown to the cook, improving the cooking experience.

[0039] In this embodiment, the heating water tank 7 is externally connected to an air jet pipe 9, and a three-way valve 10 is installed at the outlet end of the air jet pipe 9. The first port of the three-way valve 10 is connected to the water outlet end of the air jet pipe 9, the second port of the three-way valve 10 is connected to the condensed water discharge pipe 11, and the third port of the three-way valve 10 is connected to the cleaning pipe 12. The cleaning pipe 12 extends into the volute of the range hood fan 2, that is, the outlet end of the air jet pipe 9 is divided into two paths, and the gas can be discharged in two ways, one directly discharged, and the other cleaning the fan volute and impeller. The air jet pipe 9 can use a capillary tube, which can play a pressurizing role, thereby spraying high-temperature and high-pressure gas.

[0040] like Figure 3 As shown, the control method of the refrigeration type range hood of this embodiment includes the following steps:

[0041] S1, the range hood turns on the cooling mode;

[0042] S2, determine whether the water level of the heating water tank 7 is lower than the minimum requirement,

[0043] If yes, the three-way valve 10 is closed, and then the process goes to step S3;

[0044] If not, proceed to step S4;

[0045] S3, determine whether the temperature of the exhaust pipe 6 is greater than 100°C,

[0046] If yes, the air volume of the cooling fan 8 is increased, the water level of the heating water tank 7 rises, and the process returns to step S2;

[0047] If not, the air volume of the cooling fan 8 is maintained, the water level of the heating water tank 7 is raised, and the process returns to step S2;

[0048] S4, determining whether to start the range hood cleaning mode;

[0049] If yes, the three-way valve 10 leads to the cleaning pipe 12, and then the process goes to step S5;

[0050] If not, the three-way valve 10 is connected to the condensate discharge pipe 11, and then the process goes to step S5;

[0051] S5: Determine whether the temperature of the exhaust pipe 6 is greater than 100°C.

[0052] If yes, the air volume of the cooling fan 8 is maintained and the process proceeds to step S6;

[0053] If not, the air volume of the cooling fan 8 is reduced, and then the process goes to step S6;

[0054] S6, high temperature and high pressure gas ejection;

[0055] S7. Turn off the range hood.

[0056] From the above control method, we can know that

[0057] Since the surface temperatures of the exhaust pipe 6 and the condenser 4 will change under different working conditions, it is difficult for the exhaust pipe 6 to maintain a high temperature above 100°C. By arranging the exhaust pipe temperature sensing package 17 on the surface of the exhaust pipe 6 and adjusting the air volume of the heat dissipation fan 8, the temperature of the exhaust pipe 6 is adjusted so that the temperature of the exhaust pipe 6 is always maintained above 100°C, and the condensed water in the heating water tank 7 can be heated continuously and stably, thereby ensuring that the heated condensed water can continuously and stably form high-temperature and high-pressure gas, so as to discharge the condensed water and clean the volute impeller.

[0058] When it is necessary to start the fan cleaning mode, the water tank temperature sensor 16 detects the temperature in the heating water tank 7. When the temperature in the water tank reaches above 100°C, the three-way valve 10 adjusts the jet pipe 9 to the cleaning pipe 12. At this time, the condensed water after preheating by the condenser 4 and doubly heated by the exhaust pipe will form high-temperature gas, which will be pressurized through the jet capillary 9 to form high-temperature and high-pressure gas, and then pass through the three-way valve 10 to the cleaning pipe 12 to clean the fan volute.

[0059] When the fan cleaning mode does not need to be turned on, the three-way valve 10 will always be connected to the condensed water discharge pipe 11, and the condensed water generated by the evaporator 5 will be directly discharged from the range hood outlet through the condensed water discharge pipe 11.

[0060] In addition, when the liquid level in the heating water tank 7 is lower than the minimum water volume required for fan cleaning, the three-way valve 10 is closed. At the same time, the exhaust pipe temperature sensing package 17 monitors and feedbacks, and the air volume of the cooling fan 8 is adjusted to make the temperature of the exhaust pipe lower than 100°C, so that the water volume in the heating water tank will not decrease, thereby ensuring that the fan cleaning mode is turned on.

Claims

1. A refrigeration type range hood, comprising a fan frame (1), a range hood fan (2) is installed inside the fan frame (1), an air conditioning component is installed outside the fan frame (1), the air conditioning component comprises a compressor (3), a condenser (4) and an evaporator (5), the compressor (3), the condenser (4) and the evaporator (5) are connected through a refrigerant pipeline, and the refrigerant pipeline between the compressor (3) and the condenser (4) forms an exhaust pipe (6), characterized in that: A heating water tank (7) and a heat dissipation fan (8) are provided outside the fan frame (1). Condensed water condensed on the surface of the evaporator (5) flows through the condenser (4) for heating and then flows into the heating water tank (7). The heating water tank (7) is externally connected to an injection pipe (9). The outlet end of the injection pipe (9) is divided into two air outlets, one of which is connected to a condensed water discharge pipe (11) and the other is connected to a cleaning pipe (12) used for cleaning the range hood fan (2). The heat dissipation fan (8) is used to dissipate heat from the condenser (4).

2. The refrigeration type range hood according to claim 1, characterized in that: The fan frame (1) is provided with heat dissipation holes, and the air outlet of the heat dissipation fan (8) is connected to the air inlet of the range fumes suction fan (2) through the heat dissipation holes.

3. The refrigeration type range hood according to claim 1, characterized in that: A three-way valve (10) is installed at the outlet end of the jet pipe (9), a first port of the three-way valve (10) is connected to the water outlet end of the jet pipe (9), a second port of the three-way valve (10) is connected to the condensate discharge pipe (11), and a third port of the three-way valve (10) is connected to the cleaning pipe (12).

4. The refrigeration type range hood according to claim 1, characterized in that: The exhaust pipe (6) is arranged in the heating water tank (7).

5. The refrigeration type range hood according to claim 1, characterized in that: A water receiving tray (13) is installed below the evaporator (5), and condensed water in the water receiving tray (13) is transported to the surface of the condenser (4) through a water pipe (14).

6. The refrigeration type range hood according to claim 1, characterized in that: A water level sensor (15) is installed in the heating water tank (7).

7. The refrigeration type range hood according to claim 1, characterized in that: A water tank temperature sensing package (16) is installed in the heating water tank (7).

8. The refrigeration type range hood according to claim 1, characterized in that: An exhaust pipe temperature sensing package (17) is installed on the exhaust pipe (6).

9. The refrigeration type range hood according to claim 1, characterized in that: The cleaning pipe (12) extends into the interior of the volute of the range fumes exhaust fan (2).

10. A control method for a refrigeration range hood, characterized in that The control method is applied to the refrigeration range hood according to claim 3, and comprises the following steps: S1, the range hood turns on the cooling mode; S2, judging whether the water level of the heating water tank (7) is lower than the minimum requirement, If yes, the three-way valve (10) is closed and the process proceeds to step S3; If not, proceed to step S4; S3, judging whether the temperature of the exhaust pipe (6) is greater than 100°C, If so, the air volume of the cooling fan (8) is increased, the water level of the heating water tank (7) is raised, and the process returns to step S2; if not, the air volume of the cooling fan (8) is maintained, the water level of the heating water tank (7) is raised, and the process returns to step S2; S4, determining whether to start the range hood cleaning mode; If yes, the three-way valve (10) is connected to the cleaning pipe (12), and then the process proceeds to step S5; If not, the three-way valve (10) is connected to the condensate discharge pipe (11), and then the process goes to step S5; S5, judging whether the temperature of the exhaust pipe (6) is greater than 100°C, If yes, the air volume of the cooling fan (8) is maintained and the process proceeds to step S6; If not, the air volume of the cooling fan (8) is reduced, and then the process proceeds to step S6; S6, high temperature and high pressure gas ejection; S7. Turn off the range hood.

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