A refrigeration type range hood and a control method thereof

Abstract

A kind of refrigeration type range hood and its control method, including fan frame, fan frame inside is equipped with range hood fan, air conditioning component is installed outside fan frame, exhaust pipe is formed between the refrigerant pipeline of compressor and condenser, heating water tank and heat dissipation fan are equipped outside fan frame, condensate water on the surface of evaporator flows into heating water tank after being heated by condenser, the outlet end of air injection pipe connected to heating water tank is divided into two paths, one path is connected to condensate water discharge pipe, another path is connected to cleaning pipe for cleaning range hood fan, heat dissipation fan dissipates heat for condenser.The high-temperature and high-pressure steam in heating water tank of the refrigeration type range hood can be discharged through condensate water discharge pipe, and can also be used to clean range hood fan through cleaning pipe, on the one hand, it realizes effective use of condensate water, on the other hand, it improves air conditioning efficiency, and the control method can intelligently control the air volume of heat dissipation fan according to the water temperature, water level and exhaust pipe temperature of heating water tank, with high degree of intelligence.

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 increase air conditioning components on the basis of range hood platform, and the compressor, condenser and evaporator are connected through refrigerant pipelines, so that the refrigeration type range hood can realize all functions of the range hood and the air conditioner. The condensate water of the refrigeration range hood on the market is often discharged externally, which is discharged externally by punching a hole in the wall or introduced into the sewer pipe through the pipeline, and does not have the ability to treat the condensate water alone, thereby increasing the installation cost. And the traditional range hood on the market often does not have a cleaning function, even if the cleaning function is increased, it only simply increases the water pump and heating rod to heat and spray the water added from the outside, which needs to increase additional parts to heat the water, so as to achieve the effect of vaporization and spraying, thereby reducing the reliability of the whole machine. In addition, when cleaning the fan of the range hood, an additional water source needs to be added from the outside, which is relatively inconvenient. In view of the above, the existing refrigeration 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 capable of effectively utilizing condensate water in view of the above-mentioned prior art status.

[0004] The second technical problem to be solved by the present application is to provide a control method of a refrigeration type range hood with high intelligence and capable of effectively utilizing condensate water in view of the above-mentioned prior art status.

[0005] The technical solution adopted by the present application to solve the above-mentioned first technical problem is: the refrigeration type range hood comprises a fan frame, an oil fume fan is installed inside the fan frame, an air conditioning component is installed outside the fan frame, the air conditioning component comprises a compressor, a condenser and an evaporator, the compressor, the condenser and the evaporator are connected through refrigerant pipelines, and the refrigerant pipeline between the compressor and the condenser forms an exhaust pipe, characterized in that: a heating water tank and a heat dissipation fan are arranged outside the fan frame, the condensate water condensed on the surface of the evaporator flows into the heating water tank after being heated by the condenser, the heating water tank is externally connected with a jet pipe, the outlet end of the jet pipe is divided into two paths, one of which is connected with a condensate water discharge pipe, and the other of which is connected with a cleaning pipe for cleaning the oil fume fan, and the heat dissipation fan is used to dissipate heat of the condenser.

[0006] In order to make the heat of the condenser can be taken away by the range hood fan, the fan frame is provided with heat dissipation holes, and the outlet of the heat dissipation fan is communicated with the inlet of the range hood through the heat dissipation holes.

[0007] In order to make the high-temperature and high-pressure gas sprayed by the jet pipe be smoothly divided into two parts, a three-way valve is installed at the outlet end of the jet pipe, the first port of the three-way valve is communicated with the outlet end of the jet pipe, the second port of the three-way valve is communicated with the condensate water discharge pipe, and the third port of the three-way valve is communicated with 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 high, when the temperature of the exhaust pipe is maintained at 100 DEG C or above, the condensate water in the heating water tank can be continuously and stably heated. Thus, it is ensured that the heated condensate water can continuously and stably form high-temperature and high-pressure gas. Moreover, the condensate water is also used to cool the exhaust pipe, which is beneficial to improving the refrigeration power of the unit.

[0009] In order to transport the condensate water to the condenser, a water collecting tray is installed below the evaporator, and the condensate water in the water collecting tray is transported to the surface of the condenser through the water pipe. In this way, on the one hand, the condensate water can cool the condenser to improve the heat exchange efficiency thereof, and on the other hand, the condensate water can be 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 bag is installed in the heating water tank.

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

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

[0014] The technical scheme adopted by the present application to solve the second technical problem is that the control method of the refrigeration type range hood comprises the following steps:

[0015] S1, the range hood is started in the refrigeration mode;

[0016] S2, it is judged whether the water level of the heating water tank is lower than the minimum requirement,

[0017] If yes, the three-way valve is closed, and then step S3 is entered;

[0018] If no, step S4 is entered;

[0019] S3, judge whether the exhaust pipe temperature is greater than 100 DEG C,

[0020] If yes, increase the heat dissipation fan air volume, the heating water tank water level rises, and return to step S2;

[0021] If no, maintain the heat dissipation fan air volume, the heating water tank water level rises, and return to step S2;

[0022] S4, judge whether the cleaning mode of the range hood is started;

[0023] If yes, the three-way valve is connected to the cleaning pipe, and then step S5 is entered;

[0024] If no, the three-way valve is connected to the condensate water discharge pipe, and then step S5 is entered;

[0025] S5, judge whether the exhaust pipe temperature is greater than 100 DEG C,

[0026] If yes, maintain the heat dissipation fan air volume, and then step S6 is entered;

[0027] If no, reduce the heat dissipation fan air volume, and then step S6 is entered;

[0028] S6, high-temperature and high-pressure gas is sprayed out;

[0029] S7, the range hood is turned off

[0030] Compared with the prior art, the advantages of the present application are that the fan frame of the refrigeration type range hood is externally provided with a heating water tank and a heat dissipation fan, the condensate water condensed on the surface of the evaporator flows into the heating water tank after being heated by the condenser, when the water temperature of the heating water tank is higher than 100 DEG C, the high-temperature and high-pressure water vapor can be discharged through the condensate water discharge pipe and can also clean the range hood through the cleaning pipe, the fan and the flue are self-cleaned without external assistance, on the one hand, the effective utilization of the condensate water is realized without the need to increase an additional drain pipe, on the other hand, the heat dissipation of the condenser is used to improve the energy efficiency of the air conditioner, the control method can intelligently control the heat dissipation fan air volume according to the water temperature, water level and exhaust pipe temperature of the heating water tank, the degree of intelligence is high and the energy saving and environmental protection are very good. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structure schematic view of the range hood of the embodiment of the present application;

[0032] Figure 2 It is a connection schematic view of the air conditioning assembly of the embodiment of the present application;

[0033] Figure 3 It is a logic control diagram of the control method of the embodiment of the present application. DETAILED DESCRIPTION

[0034] The application will be further described in detail below with reference to the embodiments of the drawings.

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

[0036] Part of the exhaust pipe 6 outside the fan frame 1 is buried in the heating water tank 7. A water level sensor 15 and a water tank temperature sensing bag 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 bag 16 is used to detect the water temperature of the heating water tank 7. In addition, an exhaust pipe temperature sensing bag 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 pan 13 is installed below the evaporator 5, and the condensed water in the water pan 13 is transported to the surface of the condenser 4 through a water pipe 14, and the condensed water condensed on the surface of the evaporator 5 flows into the heating water tank 7 after being heated by the condenser 4. While the condensed water is heated, the condenser 4 is also effectively cooled, thereby improving the energy efficiency of the air conditioner. Generally, the surface temperature of the condenser can reach above 70℃, and the temperature of the exhaust pipe 6 connected to the compressor 3 can reach above 100℃. During refrigeration, the evaporator 5 will generate sufficient condensed water, and the exhaust pipe 6 in the heating water tank 7 can heat the condensed water twice, on the other hand, the condensed water cools the exhaust pipe 6, which helps to improve the refrigeration efficiency.

[0038] In order to further cool the condenser 4, a cooling fan 8 is installed outside the fan frame 1, which cools the condenser 4. The condenser 4 can be cooled in many ways, and the heat of the condenser 4 can be directly discharged to the exhaust fan 8, such as to the flue pipe, or a cooling hole can be opened on the fan frame 1, and the outlet of the cooling fan 8 is connected to the inlet of the range hood fan 2 through the cooling hole, that is, the heat of the condenser 4 is finally discharged outward through the range hood fan 2. The cold energy of the evaporator 5 is blown out by the outlet fan 18, and the cold air blows towards the cook, improving the cooking experience.

[0039] In this embodiment, the heating water tank 7 is connected with a jet pipe 9, the outlet end of the jet pipe 9 is provided with a three-way valve 10, the first port of the three-way valve 10 is connected with the outlet end of the jet pipe 9, the second port of the three-way valve 10 is connected with a condensate water discharge pipe 11, the third port of the three-way valve 10 is connected with a cleaning pipe 12, the cleaning pipe 12 extends into the volute of the range hood 2, that is, the outlet end of the jet pipe 9 is divided into two paths, the gas can be discharged in two paths, one path is directly discharged, and the other path is used for cleaning the fan volute and impeller. The jet pipe 9 can be a capillary tube, which can pressurize the gas to be high-temperature and high-pressure.

[0040] As shown in Figure 3 the control method of the refrigeration range hood, comprising the following steps:

[0041] S1, the range hood is started in the refrigeration mode;

[0042] S2, it is judged 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 step S3 is entered;

[0044] if no, step S4 is entered;

[0045] S3, it is judged whether the temperature of the exhaust pipe 6 is greater than 100℃,

[0046] if yes, 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;

[0047] if no, 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, it is judged whether the range hood cleaning mode is started;

[0049] if yes, the three-way valve 10 is connected to the cleaning pipe 12, and then step S5 is entered;

[0050] if no, the three-way valve 10 is connected to the condensate water discharge pipe 11, and then step S5 is entered;

[0051] S5, it is judged whether the temperature of the exhaust pipe 6 is greater than 100℃,

[0052] if yes, the air volume of the cooling fan 8 is maintained, and then step S6 is entered;

[0053] if no, the air volume of the cooling fan 8 is reduced, and then step S6 is entered;

[0054] S6, high-temperature and high-pressure gas is sprayed;

[0055] S7, the range hood is turned off.

[0056] From the above control method can be known,

[0057] Because the surface temperature of the exhaust pipe 6 and the condenser 4 will change in different working conditions, the exhaust pipe 6 is difficult to maintain a high temperature above 100℃. By arranging the exhaust pipe temperature sensing bag 17 on the surface of the exhaust pipe 6, the temperature of the exhaust pipe 6 is adjusted by adjusting the air volume of the cooling fan 8, so that the temperature of the exhaust pipe 6 is always maintained above 100℃, which can continuously and stably heat the condensate water in the heating water tank 7, so as to ensure that the heated condensate water can continuously and stably form high-temperature and high-pressure gas, thereby discharging the condensate water and cleaning the volute impeller.

[0058] When the fan cleaning mode needs to be started, the water tank temperature sensing bag 16 detects the temperature in the heating water tank 7, and when the temperature in the water tank is above 100℃, the three-way valve 10 will adjust the jet pipe 9 to the cleaning pipe 12. At this time, the condensate water after being preheated by the condenser 4 and double-heated by the exhaust pipe will form high-temperature gas, which is pressurized by the jet pipe 9 to form high-temperature and high-pressure gas, and then enters the cleaning pipe 12 through the three-way valve 10 to clean the fan volute.

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

[0060] In addition, when the liquid level of the heating water tank 7 is lower than the minimum water amount required for fan cleaning, the three-way valve 10 is closed, and at the same time, the exhaust pipe temperature sensing bag 17 is monitored and fed back, and the air volume of the cooling fan 8 is adjusted to make the temperature of the exhaust pipe lower than 100℃, so that the amount of water in the heating water tank will not be reduced, thereby ensuring that the fan cleaning mode is started.

Claims

1. A refrigerated range hood, comprising a fan frame (1), wherein a range hood fan (2) is installed inside the fan frame (1), and an air conditioning assembly is installed outside the fan frame (1), wherein the air conditioning assembly comprises a compressor (3), a condenser (4), and an evaporator (5), wherein the compressor (3), the condenser (4), and the evaporator (5) are connected by a refrigerant pipeline, and the refrigerant pipeline between the compressor (3) and the condenser (4) forms an exhaust pipe (6), characterized in that: The fan frame (1) is externally provided with a heating water tank (7) and a heat dissipation fan (8), the condensed water condensed on the surface of the evaporator (5) flows into the heating water tank (7) after being heated by the condenser (4), the heating water tank (7) is externally connected with an air injection pipe (9), the outlet end of the air injection pipe (9) is divided into two air outlet paths, one of which is connected with a condensed water discharge pipe (11), and the other of which is connected with a cleaning pipe (12) used for cleaning the oil fume fan (2), the heat dissipation fan (8) is used for dissipating heat of the condenser (4), the exhaust pipe (6) is arranged in the heating water tank (7), a water level sensor (15) is installed in the heating water tank (7), and an exhaust pipe temperature sensing bag (17) is installed on the exhaust pipe (6).

2. The refrigerated extractor hood according to claim 1, characterized in that: The fan frame (1) is externally provided with a heating water tank (7) and a heat dissipation fan (8), the condensed water condensed on the surface of the evaporator (5) flows into the heating water tank (7) after being heated by the condenser (4), the heating water tank (7) is externally connected with an air injection pipe (9), the outlet end of the air injection pipe (9) is divided into two air outlet paths, one of which is connected with a condensed water discharge pipe (11), and the other of which is connected with a cleaning pipe (12) used for cleaning the oil fume fan (2), the heat dissipation fan (8) is used for dissipating heat of the condenser (4), the exhaust pipe (6) is arranged in the heating water tank (7), a water level sensor (15) is installed in the heating water tank (7), and an exhaust pipe temperature sensing bag (17) is installed on the exhaust pipe (6).

3. The refrigerated extractor hood according to claim 1, characterized in that: The outlet end of the air injection pipe (9) is provided with a three-way valve (10), the first port of the three-way valve (10) is connected with the water outlet end of the air injection pipe (9), the second port of the three-way valve (10) is connected with the condensed water discharge pipe (11), and the third port of the three-way valve (10) is connected with the cleaning pipe (12).

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

5. The refrigerated extractor hood according to claim 1, characterized in that: A water tank temperature sensing bag (16) is installed in the heating water tank (7).

6. The refrigerated extractor hood according to claim 1, characterized in that: The cleaning pipe (12) extends into the volute of the oil fume fan (2).

7. A control method of a refrigerating range hood, characterized by The control method is applied to the refrigeration type oil fume fan of claim 3, and comprises the following steps: S1, the oil fume fan is started in the refrigeration mode; S2, whether the water level of the heating water tank (7) is lower than the minimum requirement is judged, if yes, the three-way valve (10) is closed, and then step S3 is entered; if no, step S4 is entered; S3, whether the temperature of the exhaust pipe (6) is greater than 100 DEG C is judged, if yes, the air volume of the heat dissipation fan (8) is increased, the water level of the heating water tank (7) is increased, and then step S2 is returned to; if no, the air volume of the heat dissipation fan (8) is maintained, the water level of the heating water tank (7) is increased, and then step S2 is returned to; S4, whether the oil fume fan cleaning mode is started is judged; if yes, the three-way valve (10) is connected with the cleaning pipe (12), and then step S5 is entered; if no, the three-way valve (10) is connected with the condensed water discharge pipe (11), and then step S5 is entered; S5, whether the temperature of the exhaust pipe (6) is greater than 100 DEG C is judged, if yes, the air volume of the heat dissipation fan (8) is maintained, and then step S6 is entered; if no, the air volume of the heat dissipation fan (8) is reduced, and then step S6 is entered; S6, high temperature and high pressure gas is injected; S7, the oil fume fan is turned off.

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