Water removal method for oil cup of range hood and range hood

Abstract

The application discloses an oil cup water removal method of an oil smoke extractor and the oil smoke extractor and relates to the technical field of oil smoke purification. The oil cup water removal method of the oil smoke extractor specifically comprises the following steps: first, the volume of the medium in the oil cup is obtained, that is, the total volume of the oil-water mixture in the oil cup is obtained; then, the volume of the medium in the oil cup is compared with a first preset volume; if the volume of the medium in the oil cup is greater than the first preset volume, the oil cup is heated, so that the water in the oil cup continuously evaporates in the heating process, and the boiling point of oil is higher than that of water, so that only oil is left in the oil cup after the water evaporates. Through the method, when the user causes the oil cup to have accumulated water during cooking or cleaning, only the water can be evaporated through heating, so that resources are saved, the frequency of cleaning the oil cup by the user is reduced, and the use experience of the user is improved.

Description

Technical Field

[0001] This invention relates to the field of oil fume purification technology, and particularly to a method for removing water from the oil cup of a range hood and the range hood itself. Background Technology

[0002] As an appliance that purifies the kitchen environment, the range hood has become an indispensable kitchen facility in modern homes. Range hoods are generally installed directly above the stove. During cooking, cooking fumes rise upwards, and the range hood draws these fumes in from above and exhausts them outdoors. The grease cup of the range hood is typically used to store waste oil, which is emptied by the user when it is full.

[0003] However, during normal cooking, especially steaming, boiling, and stewing, the range hood absorbs a large amount of water vapor. This condensation on the hood's casing inevitably accumulates and flows into the oil cup. Furthermore, with the increasing prevalence of self-cleaning range hoods, which often use water to clean the impeller and volute, this wastewater can also flow into the oil cup. For all these reasons, the water content in the oil cup increases, requiring more frequent cleaning and reducing the user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the oil cup of the range hood is prone to water ingress due to various reasons, which increases the frequency of daily cleaning of the oil cup by users. The present invention provides a method for removing water from the oil cup of the range hood and a range hood.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A method for removing water from the oil cup of a range hood, characterized in that the method includes: step S1.1, obtaining the volume of the medium inside the oil cup; step S1.2, comparing the volume of the medium inside the oil cup with a first preset volume, and if the volume of the medium inside the oil cup is greater than the first preset volume, then heating the oil cup.

[0007] In this solution, the volume of the medium inside the oil cup of the range hood is first obtained, i.e., the total volume of the oil-water mixture inside the oil cup. This volume is then compared with a first preset volume. When the volume of the medium inside the oil cup is greater than the first preset volume, the oil cup is heated. During the heating process, the water inside the oil cup continuously evaporates. Since oil has a higher boiling point than water, only oil remains in the oil cup after the water evaporates. This method allows for the evaporation of water from the oil cup during cooking or cleaning, saving resources and reducing the frequency of cleaning, thus improving the user experience.

[0008] Furthermore, the temperature range for heating the oil cup in step 1.2 is 50°C to 100°C.

[0009] In this scheme, the oil cup is heated to a temperature range of 50°C to 100°C. On the one hand, water can continuously evaporate at this temperature, and on the other hand, this temperature does not reach the boiling point of water. This prevents water from boiling in the oil cup, which would affect the accuracy of obtaining the volume of the medium in the oil cup, and also prevents the medium from overflowing from the oil cup due to boiling.

[0010] Furthermore, step S1.2 also includes: if the volume of the medium in the oil cup is less than the first preset volume, then it is further determined whether the temperature of the medium in the oil cup is less than 0°C; if so, step S1.1 is repeated.

[0011] In this solution, when the volume of the medium inside the oil cup is less than the first preset volume, it is unclear whether the medium inside the oil cup is an oil-water mixture or an oil-ice mixture. Therefore, the temperature inside the oil cup is measured. If the temperature is greater than 0°C, it indicates that the oil cup contains an oil-water mixture. However, since water expands when it freezes, if the temperature drops below 0°C, the volume of the medium inside the oil cup may exceed the first preset volume. If the temperature is less than 0°C, it indicates that the oil cup contains an oil-ice mixture. If the volume of the oil-ice mixture does not exceed the first preset volume, it means that the oil cup does not need to be heated or the oil poured out. The volume of the medium inside the oil cup can then be measured again.

[0012] Furthermore, step S1.1 further includes: obtaining the volume of water in the oil cup; the oil cup dewatering method further includes step S1.3: comparing the volume of water in the oil cup with a second preset volume; if the volume of water in the oil cup is less than the second preset volume, then further comparing the volume of the medium in the heated oil cup with the first preset volume; if the volume of the medium in the oil cup is greater than the first preset volume, then issuing a signal to clean the oil cup; if the volume of the medium in the oil cup is less than the first preset volume, then repeating step S1.1.

[0013] In this solution, the volume of the medium and the volume of water in the oil cup are obtained. When the volume of the medium in the oil cup is greater than a first preset volume, the oil cup is heated. The volume of water in the oil cup is then compared with a second preset volume. If it is less than the second preset volume, it means that some of the water in the oil cup has evaporated, but the oil in the oil cup has not yet evaporated. At this time, the volume of the medium in the heated oil cup is compared with the first preset volume. If it is still greater than the first preset volume, it means that there is too much oil in the oil cup, and the user needs to be reminded to clean the oil cup in time. If it is less than the first preset volume, it means that the water in the oil cup has evaporated, and the volume of the medium in the oil cup has reached the ideal value. At this time, the volume of the medium in the oil cup is obtained again.

[0014] Furthermore, the step of obtaining the volume of water in the oil cup specifically includes: obtaining the weight of the medium in the oil cup, and calculating the volume of water in the oil cup based on the weight and volume of the medium in the oil cup.

[0015] In this scheme, by obtaining the weight of the medium inside the oil cup, the total weight of water and oil inside the oil cup can be known. By obtaining the volume of the medium inside the oil cup, the total volume of water and oil inside the oil cup can be known. Given that the densities of water and oil are known, the individual volumes of water and oil can be calculated. The calculation is simple and feasible.

[0016] Furthermore, between steps S1.1 and S1.2, there is also step S1.1.1: obtaining the weight of the medium inside the oil cup, and determining whether there is liquid outside the oil cup based on the volume and weight of the medium inside the oil cup; if there is liquid outside the oil cup, then heating the oil cup.

[0017] In this solution, the volume of the medium inside the oil cup is obtained first, followed by its weight. The volume and weight of the medium are then used to determine if there is liquid outside the oil cup. If there is liquid outside the oil cup, and that liquid is water, the oil cup can be heated first to evaporate the water. This design not only prevents water from condensing and dripping from the outside of the oil cup, thus avoiding interference with cooking, but also allows for a more accurate determination of the volume of water and oil inside the oil cup.

[0018] Furthermore, step S1.1.1 also includes: if there is no liquid outside the oil cup, then step S1.2 is executed.

[0019] In this solution, after determining whether there is liquid outside the oil cup, and confirming that there is no liquid outside the oil cup, the volume of the medium inside the oil cup is compared with a first preset volume, and corresponding operations are performed. This setting makes the comparison between the volume of the medium inside the oil cup and the first preset volume more accurate, thus allowing for more precise subsequent operations based on the comparison result.

[0020] Furthermore, step S1.1.1 includes: comparing the weight of the medium inside the oil cup with the weight of water of the same volume inside the oil cup, and determining whether there is liquid outside the oil cup based on the difference after comparison.

[0021] In this method, after obtaining the weight and volume of the medium inside the oil cup, the volume of the medium is converted into an equal volume of water. The weight of this equal volume of water is then compared with the obtained weight. Since the medium inside the oil cup is an oil-water mixture, and water has a higher density than oil, the weight of the same volume of medium must be less than the weight of the same volume of water. Therefore, if the obtained weight of the medium is greater than the weight of the same volume of water, or exceeds the weight of the same volume of water by a certain value, it indicates that there is liquid suspended outside or on the side wall of the oil cup; otherwise, there is not.

[0022] Furthermore, step S1.1.1 is followed by step S1.1.2: obtaining the temperature inside the oil cup and comparing it with a first preset temperature; if the temperature inside the oil cup is greater than the first preset temperature, a signal to clean the oil cup is issued; if the temperature inside the oil cup is less than the first preset temperature, step S1.1.1 is repeated.

[0023] In this solution, after determining that there is liquid outside the oil cup and heating the oil cup, the temperature inside the oil cup is continuously acquired and compared with a first preset temperature. If the temperature inside the oil cup has not yet exceeded the first preset temperature, it means that the temperature of the oil cup has not reached the requirement. At this time, it is determined again whether there is liquid outside the oil cup. If there is still liquid, heating continues. If the temperature inside the oil cup has exceeded the first preset temperature, it means that the temperature of the oil cup has reached the requirement. At this time, it is determined again whether there is liquid outside the oil cup. If there is still liquid, it means that the liquid is oil, and a signal is sent to the user to clean the oil cup.

[0024] Furthermore, step S1.2 also includes: if the volume of the medium in the oil cup is less than the first preset volume, then further determine whether the temperature of the medium in the oil cup is greater than 0°C; if the temperature of the medium in the oil cup is greater than 0°C, then further determine whether the temperature of the medium in the oil cup continues to decrease and has a trend of falling below 0°C; if the temperature of the medium in the oil cup continues to decrease and has a trend of falling below 0°C, then after converting the water in the oil cup into ice, determine whether the total volume of the medium in the oil cup is less than the first preset volume; if the total volume of the medium in the oil cup is greater than the first preset volume, then issue a signal to clean the oil cup.

[0025] In this solution, when the volume of the medium inside the oil cup is less than a first preset volume, it is further determined whether the temperature of the medium inside the oil cup is greater than 0℃. If it is greater than 0℃, it indicates that the water inside the oil cup is in a liquid state. At this point, it is further determined whether the temperature of the medium inside the oil cup continues to drop and has a trend of falling below 0℃. If so, it is assumed that the water inside the oil cup will turn into ice, and then the total volume of the medium inside the oil cup is greater than the first preset volume. If it is greater than the first preset volume, a signal to clean the oil cup is issued. This setting can prevent the temperature of the medium inside the oil cup from dropping below 0℃, causing the water inside the oil cup to freeze and increase in volume, resulting in oil overflowing from the oil cup and affecting the user's cooking experience.

[0026] Furthermore, step S1.2 also includes: if the temperature of the medium in the oil cup is less than 0°C, or if the temperature of the medium in the oil cup does not continue to decrease and has a trend of being lower than 0°C, or if the total volume of the medium in the oil cup is less than the first preset volume, then step S1.1 is repeated.

[0027] In this scheme, if the temperature of the medium inside the oil cup is less than 0℃, it means that the water inside the oil cup has frozen. At this time, if the volume of the medium inside the oil cup is still less than the first preset volume, there will be no risk of overflow. Alternatively, if the temperature of the medium inside the oil cup does not continue to drop and has a trend of falling below 0℃, or if the water inside the oil cup is converted into ice and the total volume of the medium inside the oil cup is still less than the first preset volume, there will be no risk of overflow. In this case, the volume of the medium inside the oil cup can be repeatedly obtained.

[0028] A range hood is characterized in that it employs the oil cup water removal method described above.

[0029] In this solution, the above-described method for removing water from the oil cup of a range hood is used to effectively solve the problem of water entering the oil cup of a range hood for various reasons, which leads to an increased frequency of daily cleaning of the oil cup by the user.

[0030] The positive and progressive effects of this invention are as follows:

[0031] The oil cup dewatering method of this range hood first determines the volume of the medium inside the oil cup, i.e., the total volume of the oil-water mixture. This volume is then compared to a first preset volume. If the volume of the medium exceeds the preset volume, the oil cup is heated. During heating, the water in the oil cup evaporates continuously. Since oil has a higher boiling point than water, only oil remains in the oil cup after the water evaporates. This method allows users to evaporate only the water in the oil cup during cooking or cleaning, saving resources and reducing the frequency of cleaning, thus improving the user experience. Attached Figure Description

[0032] Figure 1 This is a flowchart (I) of the oil cup dewatering method of the range hood in Embodiment 1 of the present invention.

[0033] Figure 2 This is a schematic flowchart (II) of the oil cup dewatering method of the range hood in Embodiment 1 of the present invention.

[0034] Figure 3 This is a flowchart (III) of the oil cup dewatering method of the range hood in Embodiment 1 of the present invention.

[0035] Figure 4 This is a schematic flowchart (IV) of the oil cup dewatering method of the range hood in Embodiment 1 of the present invention.

[0036] Figure 5 This is a flowchart (V) illustrating the method for removing water from the oil cup of a range hood in Embodiment 1 of the present invention.

[0037] Figure 6 This is a schematic diagram of the overall process of the oil cup dewatering method of the range hood in Embodiment 1 of the present invention.

[0038] Figure 7 This is a schematic diagram of the range hood according to Embodiment 2 of the present invention.

[0039] Figure 8 This is a schematic diagram of the oil cup structure in Embodiment 2 of the present invention (I).

[0040] Figure 9 This is a schematic diagram (II) of the oil cup structure in Embodiment 2 of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] Range hood body 1

[0043] Oil cup 2

[0044] Hook 21

[0045] Liquid level sensor 3

[0046] Heating element 4

[0047] Temperature sensor 5 Detailed Implementation

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] Example 1

[0052] During the use of a range hood, it absorbs a large amount of water vapor, and the water vapor condensing on the hood's casing inevitably accumulates and flows into the grease cup. In particular, with the increasing number of range hoods featuring self-cleaning functions, these models often use water to clean components such as the impeller and volute, and the wastewater from this cleaning process may also flow into the grease cup. To overcome the drawback of increased frequency of daily grease cup cleaning due to water entering the grease cup for various reasons, this embodiment provides a method for removing water from the grease cup of a range hood.

[0053] The method for removing water from an oil cup includes: step S1.1, obtaining the volume of the medium inside the oil cup;

[0054] Step S1.2: Compare the volume of the medium in the oil cup with the first preset volume. If the volume of the medium in the oil cup is greater than the first preset volume, then heat the oil cup.

[0055] Specifically, such as Figure 1As shown, this method for removing water from an oil cup first involves obtaining the volume of the medium inside the oil cup, specifically the total volume of the oil-water mixture. For example, when the oil cup is a rectangular container, the volume can be calculated based on the length and width of the cuboid and the height of the medium inside the container. Alternatively, any other existing method can be used to obtain the volume. After obtaining the volume, it is compared with a preset first volume. If the volume is greater than the first preset volume, the medium volume is considered large. In this case, the oil cup is heated, causing the water inside to evaporate. Since oil has a higher boiling point than water, only oil remains after the water evaporates. This method allows users to evaporate water from the oil cup during cooking or cleaning, saving resources and reducing the frequency of cleaning, thus improving the user experience.

[0056] Furthermore, in step 1.2, the heating temperature range for the oil cup is 50 to 100 degrees Celsius. This allows water to continuously evaporate at this temperature, while also preventing the water from reaching its boiling point. This prevents the water from boiling in the oil cup, which could affect the accuracy of the medium volume measurement or cause the medium to overflow. Preferably, the heating temperature range for the oil cup is 50 to 80 degrees Celsius. By limiting the temperature to below 80 degrees Celsius, a larger temperature margin is provided to completely prevent the medium from overflowing from the oil cup due to boiling water.

[0057] Furthermore, step S1.2 also includes: if the volume of the medium in the oil cup is less than the first preset volume, then it is further determined whether the temperature of the medium in the oil cup is less than 0°C; if so, step S1.1 is repeated.

[0058] Specifically, such as Figure 2 As shown, when the volume of the medium in the oil cup is less than the first preset volume, it is unclear whether the medium in the oil cup is an oil-water mixture or an oil-ice mixture. Therefore, the temperature inside the oil cup is measured. For example, a temperature sensor is installed in the oil cup. If the temperature is greater than 0°C, it indicates that the oil cup contains an oil-water mixture. However, since water expands when it freezes, if the temperature drops below 0°C, the volume of the medium inside the oil cup may exceed the first preset volume. If the temperature is less than 0°C, it indicates that the oil cup contains an oil-ice mixture. If the volume of the oil-ice mixture does not exceed the first preset volume, it means that the oil cup does not need to be heated or the oil poured out. The volume of the medium inside the oil cup can then be measured again.

[0059] Furthermore, step S1.1 also includes: obtaining the volume of water in the oil cup; the oil cup dewatering method also includes step S1.3: comparing the volume of water in the oil cup with a second preset volume; if the volume of water in the oil cup is less than the second preset volume, then further comparing the volume of the medium in the heated oil cup with a first preset volume; if the volume of the medium in the oil cup is greater than the first preset volume, then issuing a signal to clean the oil cup; if the volume of the medium in the oil cup is less than the first preset volume, then repeating step S1.1.

[0060] Specifically, such as Figure 3 As shown, in step S1.1, the volume of the medium in the oil cup is obtained, including the volume of water in the oil cup. The volume of the medium in the oil cup includes the volume of water and the volume of oil. When the volume of the medium in the oil cup is greater than a first preset volume, the oil cup is heated. During the heating process, step S1.3 is performed, comparing the volume of water in the oil cup with a second preset volume. If it is less than the second preset volume, it means that the water in the oil cup has been partially evaporated, while the oil in the oil cup has not been evaporated. At this time, the volume of the medium in the heated oil cup is compared with the first preset volume. If it is still greater than the first preset volume, it means that there is too much oil in the oil cup, and the user needs to be reminded to clean the oil cup in time. If it is less than the first preset volume, it means that the volume of the medium in the oil cup has reached the ideal value after the water in the oil cup has evaporated. At this time, the volume of the medium in the oil cup is obtained again.

[0061] Furthermore, the step of obtaining the volume of water in the oil cup specifically includes: the weight of the medium in the oil cup, and calculating the volume of water in the oil cup based on the weight and volume of the medium in the oil cup.

[0062] Specifically, by obtaining the weight of the medium inside the oil cup, the total weight of water and oil inside the oil cup can be determined. For example, a gravity sensor can be installed in the oil cup to measure the weight of the oil cup and the medium inside. Before use, the weight of the oil cup in an empty state is measured. During use, the weight of the oil cup in a real-time state is measured again. Subtracting the weight of the empty state from the real-time weight of the oil cup yields the weight of the medium inside the oil cup. By obtaining the volume of the medium inside the oil cup, the total volume of water and oil inside the oil cup can be determined. Given that the densities of water and oil are known, the individual volumes of water and oil can be calculated, which is simple and feasible. Of course, in other embodiments, any other measurement method existing in the prior art can be used to measure the volume of water inside the oil cup.

[0063] Furthermore, between steps S1.1 and S1.2, the process includes: step S1.1.1, obtaining the weight of the medium inside the oil cup, and determining whether there is liquid outside the oil cup based on the volume and weight of the medium inside the oil cup. If there is liquid outside the oil cup, the oil cup is heated. If there is no liquid outside the oil cup, step S1.2 is executed.

[0064] Specifically, such as Figure 4 As shown, after obtaining the volume of the medium inside the oil cup, its weight is also obtained. The volume and weight of the medium are used to determine whether there is liquid outside the oil cup. If there is liquid outside the oil cup, the oil cup is first heated to evaporate the water outside. Once it is determined that there is no liquid outside the oil cup, the volume of the medium inside the oil cup is compared with a first preset volume, and appropriate actions are taken. This setting not only prevents water from condensing and dripping from outside the oil cup, thus affecting the user's cooking, but also allows for more accurate determination of the volume of water and oil inside the oil cup, enabling more precise subsequent actions based on the comparison results.

[0065] Furthermore, step S1.1.1 includes: comparing the weight of the medium inside the oil cup with the weight of water of the same volume inside the oil cup, and determining whether there is liquid outside the oil cup based on the difference after comparison.

[0066] Specifically, after obtaining the weight and volume of the medium inside the oil cup, the volume of the medium is converted into an equal volume of water, and the weight of this equal volume of water is compared with the obtained weight. Since the medium inside the oil cup is an oil-water mixture, and water has a higher density than oil, the weight of the same volume of medium must be less than the weight of the same volume of water. Therefore, if the obtained weight of the medium is greater than the weight of the same volume of water, or exceeds the weight of the same volume of water by a certain value, it indicates that there is liquid hanging outside or on the side wall of the oil cup; otherwise, there is not. Of course, in other embodiments, any other method existing in the prior art can be used to determine whether there is liquid outside the oil cup.

[0067] Furthermore, step S1.1.1 is followed by step S1.1.2: obtaining the temperature inside the oil cup and comparing it with the first preset temperature. If the temperature inside the oil cup is greater than the first preset temperature, a signal to clean the oil cup is issued; if the temperature inside the oil cup is less than the first preset temperature, step S1.1.1 is repeated.

[0068] Specifically, after determining that there is liquid outside the oil cup and heating the oil cup, the temperature inside the oil cup is continuously measured and compared with a first preset temperature. If the temperature inside the oil cup has not yet exceeded the first preset temperature, it means that the temperature of the oil cup has not reached the requirement. At this time, it is checked again whether there is liquid outside the oil cup. If there is still liquid, heating continues. If the temperature inside the oil cup has exceeded the first preset temperature, it means that the temperature of the oil cup has reached the requirement. At this time, it is checked again whether there is liquid outside the oil cup. If there is still liquid, it means that the liquid is oil, and a signal is sent to the user to clean the oil cup.

[0069] Furthermore, step S1.2 also includes: if the volume of the medium in the oil cup is less than the first preset volume, then further determine whether the temperature of the medium in the oil cup is greater than 0℃; if the temperature of the medium in the oil cup is greater than 0℃, then further determine whether the temperature of the medium in the oil cup continues to decrease and has a trend of falling below 0℃; if the temperature of the medium in the oil cup continues to decrease and has a trend of falling below 0℃, then after converting the water in the oil cup into ice, determine whether the total volume of the medium in the oil cup is less than the first preset volume; if the total volume of the medium in the oil cup is greater than the first preset volume, then issue a signal to clean the oil cup.

[0070] Specifically, such as Figure 5 As shown, when the volume of the medium inside the oil cup is less than the first preset volume, it is further determined whether the temperature of the medium inside the oil cup is greater than 0℃. If it is greater than 0℃, it indicates that the water inside the oil cup is in a liquid state. At this time, it is further determined whether the temperature of the medium inside the oil cup continues to drop and has a trend of falling below 0℃. If so, by assuming that the water inside the oil cup has turned into ice, the total volume of the medium inside the oil cup after the transformation is compared with the first preset volume. If the total volume of the medium inside the oil cup after the transformation is greater than the first preset volume, a signal to clean the oil cup is issued. Through this setting, the temperature of the medium inside the oil cup can be prevented from dropping below 0℃, causing the water inside the oil cup to freeze and increase in volume, resulting in oil overflowing from the oil cup and affecting the user's cooking experience.

[0071] Furthermore, step S1.2 also includes: if the temperature of the medium in the oil cup is less than 0°C, or if the temperature of the medium in the oil cup does not continue to decrease and has a trend of being lower than 0°C, or if the total volume of the medium in the oil cup is less than the first preset volume, then step S1.1 is repeated.

[0072] Specifically, if the temperature of the medium inside the oil cup is less than 0°C, it means that the water inside the oil cup has frozen. At this time, if the volume of the medium inside the oil cup is still less than the first preset volume, there will be no risk of overflow. Alternatively, if the temperature of the medium inside the oil cup does not continue to drop and has a trend of falling below 0°C, or if the water inside the oil cup is converted into ice and the total volume of the medium inside the oil cup is still less than the first preset volume, there will be no risk of overflow. In this case, the volume of the medium inside the oil cup can be repeatedly measured.

[0073] This embodiment also provides a range hood that uses the oil cup water removal method described above, which can effectively solve the problem of water entering the oil cup of the range hood for various reasons, thus increasing the frequency of daily oil cup cleaning for users.

[0074] The following is combined with Figure 6 A comprehensive and overall explanation of the oil cup dehydration method in this embodiment is provided:

[0075] like Figure 6As shown, before the range hood is used for the first time, the weight G0 of the oil cup in the empty state is detected and obtained by the gravity sensor. After the range hood is working normally, the weight G1 of the oil cup in the use state is detected and obtained by the gravity sensor. The difference between the two weights (G1-G0) can be calculated to obtain the weight of the medium in the oil cup in the use state of the range hood, that is, the sum of the weights of water and oil in the oil cup.

[0076] The temperature T of the medium inside the oil cup is obtained by a temperature sensor. When the temperature of the medium is greater than 0℃ (T>0℃), it indicates that the water inside the oil cup is in a liquid state. When the temperature of the medium is less than 0℃ (T<0℃), it indicates that the water inside the oil cup is in a solid state.

[0077] When the water in the oil cup is in a solid state, the volume V0 of the medium in the oil cup is obtained by measuring the liquid level H. Then, the volume V of the ice in the oil cup can be calculated based on G0, G1, and V0. 冰 The volume V of oil 油 If the volume V0 of the medium in the oil cup is less than the first preset volume V... m1 (V0<V m1 This indicates that when water is in a solid state, the volume of the medium inside the oil cup has not exceeded the preset value. Therefore, the liquid level H inside the oil cup is continuously monitored to continuously obtain the volume V0 of the medium inside the oil cup.

[0078] However, if the volume V0 of the medium inside the oil cup is greater than the first preset volume V... m1 (V0>V m1 The oil cup is heated by energizing the heating element. During the heating process, the ice in the oil cup melts into water (according to the formula G1-G0=ρ). 水 V 水 +ρ 油 V 油 and V0 = V 水 +V 油 V can be derived 水 and V 油 ), the volume V of water in the oil cup 水 With the second preset volume V m2 For comparison, if the volume V of water in the oil cup is... 水 Less than the second preset volume V m2 (V 水 <V m2 Then, it is further determined whether the volume V2 of the medium in the oil cup after heating is less than the first preset volume V. m1 If less than (V2 < V) m1If the water level in the oil cup has reached a safe level after being heated until the water evaporates, then heating should be stopped. The liquid level H in the oil cup should be continuously monitored to continuously obtain the volume V0 of the medium. However, if the volume V of the water in the oil cup is too high... 水 Greater than the second preset volume V m2 (V 水 >V m2 If the water level in the oil cup does not completely evaporate, then continue to power the heating element to heat the oil cup, thereby increasing the volume V of water in the oil cup. 水 Heated to a volume smaller than the second preset volume V m2 When the volume of water in the oil cup is less than the second preset volume V m2 Afterwards, if the volume V2 of the medium in the oil cup after heating is still greater than the first preset volume V... m1 (V2>V m1 If the oil level is too high, it indicates that there is too much oil in the oil cup, and a signal will be sent to remind the user to pour out the oil.

[0079] As described above, the temperature T of the medium inside the oil cup is obtained through a temperature sensor. When the temperature T is greater than 0℃ (T>0℃), it indicates that the water inside the oil cup is in a liquid state. Similarly, the volume V0 of the medium inside the oil cup is obtained based on the liquid level H. Then, based on G0, G1, and V0, the volume V of the water inside the oil cup can be calculated. 水 The volume V of oil 油 At this point, first determine if there is liquid outside the oil cup. If there is liquid, then power on the heating element to heat the oil cup. If there is no liquid, then compare the volume of the medium inside the oil cup with the first preset volume. Specifically, the method for determining if there is liquid outside the oil cup is as follows: Assume the medium inside the oil cup is all water, i.e., the volume of water is V0. Since the medium inside the oil cup is an oil-water mixture, the density of water is greater than the density of oil, so the weight of the same volume of medium must be less than the weight of the same volume of water. If the obtained weight of the medium (G1-G0) minus the weight of the same volume of water is greater than the set value (according to the formula (G1-G0)-ρ...), then... 水 V0>G C (This can be calculated) indicates that there is liquid hanging outside or on the side wall of the oil cup; otherwise, there is not.

[0080] When there is liquid outside the oil cup, further determine whether the current temperature T is lower than the preset temperature T. M If it is less than the preset temperature (T < T) M If the oil cup is still filled with liquid, then check again whether there is liquid outside the oil cup. If there is still liquid, continue heating the oil cup; if the current temperature is greater than the preset temperature (T > T), then check again whether there is liquid outside the oil cup. MIf the temperature has been reached and there is still liquid outside the oil cup, it indicates that the liquid is oil. At this point, a signal is sent to the user to remind them to clean the bottom of the oil cup.

[0081] When there is no liquid outside the oil cup, the volume V0 of the medium inside the oil cup is compared with the first preset volume. m1 If it is greater than V m1 (V0>V m1 The oil cup is heated by energizing the heating element. Similarly, during the heating process, the volume V of water in the oil cup is affected. 水 With the second preset volume V m2 Compare them.

[0082] If the volume V0 of the medium inside the oil cup is less than V m1 (V0<V m1 If the current temperature T is less than the preset value T, then determine whether the current temperature T is less than the preset value T. C T C The current temperature T is less than the preset value T, which is a fixed value close to 0 degrees. C (T < T) C If the temperature is read at regular intervals, and multiple subsequent temperatures are lower than the preceding temperatures (T), then... i+1 -T i <0) indicates that the current temperature has a downward trend and will approach T. C This means that the water in the oil cup may have a tendency to freeze, and the volume of the water will increase after freezing. If, assuming the water in the oil cup freezes, the sum of the volume of the ice and the volume of the oil exceeds a first preset volume V, then... m1 If the oil cup is frozen, it indicates that the medium inside is in a dangerous state, meaning that the oil will overflow after the water freezes. In this case, a signal will be sent to the user to remind them to empty the oil.

[0083] If the current temperature T is determined to be greater than the preset value T C Time (T>T) C ), or in a series of temperature readings, there are no multiple later temperatures that are lower than earlier temperatures (T). i+1 -T i >0), or after the water in the oil cup turns into ice, the sum of the volume of the ice and the volume of the oil is less than the first preset volume V. m1 If the volume of the medium in the oil cup is within a safe range, it will not overflow after the water freezes into ice. At this point, you can continue to measure the volume V0 of the medium in the oil cup.

[0084] Example 2

[0085] This embodiment provides a range hood that uses the oil cup water removal method provided in Embodiment 1 to remove water from the oil cup.

[0086] like Figure 7 As shown, the oil cup 2 is located at the bottom of the range hood, and is connected to the range hood body 1 by hooks 21 located on the left and right sides of the oil cup 2.

[0087] like Figure 8 and Figure 9 As shown, gravity sensors (not shown in the figure) are respectively installed on the hooks 21 on both sides of the oil cup 2 to detect the force between the hooks 21 and the range hood body 1, thereby obtaining the weight of the oil cup 2 and the medium inside the oil cup 2.

[0088] A liquid level sensor 3 is installed above the oil cup 2, with its bottom probe facing the oil cup 2 to detect the liquid level of the medium inside the oil cup 2. In this embodiment, the liquid level sensor 3 is fixed to the range hood body 1 and is not removed from the range hood body 1 along with the oil cup 2.

[0089] like Figure 9 As shown, a U-shaped heating tube 4 is installed at the bottom of the oil cup 2. The heat generated by the heating tube 4 evaporates the water in the medium inside the oil cup 2. The U-shaped heating tube 4 increases the contact area between the heating tube 4 and the medium inside the oil cup 2, improving heating efficiency and uniformity. In addition, a temperature sensor 5 is installed at the bottom of the oil cup 2 to detect the temperature of the medium inside the oil cup. The temperature sensor 5 is positioned relatively far from the U-shaped heating tube 4 to prevent heat from the heating tube 4 from being directly transferred to the temperature sensor 5, thus affecting the accurate determination of the medium temperature by the temperature sensor 5.

[0090] Of course, this embodiment only provides a preferred structural arrangement of the range hood to achieve the oil cup water removal method of the range hood in Embodiment 1. Other structural arrangements or specific sensor selections also exist in the prior art to achieve the same oil cup water removal method of the range hood in Embodiment 1.

[0091] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method for removing water from the oil cup of a range hood, characterized in that, The oil cup dehydration method includes: Step S1.1: Obtain the volume of the medium inside the oil cup; Step S1.2: Compare the volume of the medium in the oil cup with the first preset volume. If the volume of the medium in the oil cup is greater than the first preset volume, heat the oil cup. If the volume of the medium in the oil cup is less than the first preset volume, further determine whether the temperature of the medium in the oil cup is less than 0°C. If so, repeat step S1.

1.

2. The method for removing water from the oil cup of a range hood as described in claim 1, characterized in that, The temperature range for heating the oil cup in step S1.2 is 50°C to 100°C.

3. The method for removing water from the oil cup of a range hood as described in claim 1, characterized in that, Step S1.1 further includes: obtaining the volume of water in the oil cup; The method for removing water from the oil cup further includes step S1.3: comparing the volume of water in the oil cup with a second preset volume; if the volume of water in the oil cup is less than the second preset volume, then further comparing the volume of the medium in the heated oil cup with the first preset volume; if the volume of the medium in the oil cup is greater than the first preset volume, then issuing a signal to clean the oil cup; if the volume of the medium in the oil cup is less than the first preset volume, then repeating step S1.

1.

4. The method for removing water from the oil cup of a range hood as described in claim 3, characterized in that, The step of obtaining the volume of water in the oil cup specifically includes: obtaining the weight of the medium in the oil cup, and calculating the volume of water in the oil cup based on the weight and volume of the medium in the oil cup.

5. The method for removing water from the oil cup of a range hood as described in claim 1, characterized in that, Between step S1.1 and step S1.2, the following is also included: Step S1.1.1: Obtain the weight of the medium inside the oil cup, and determine whether there is liquid outside the oil cup based on the volume and weight of the medium inside the oil cup. If there is liquid outside the oil cup, heat the oil cup.

6. The method for removing water from the oil cup of a range hood as described in claim 5, characterized in that, Step S1.1.1 further includes: if there is no liquid outside the oil cup, then proceed to step S1.

2.

7. The method for removing water from the oil cup of a range hood as described in claim 5, characterized in that, Step S1.1.1 includes: The weight of the medium inside the oil cup is compared with the weight of water of the same volume inside the oil cup, and the difference is used to determine whether there is liquid outside the oil cup.

8. The method for removing water from the oil cup of a range hood as described in claim 5, characterized in that, The step S1.1.1 is followed by step S1.1.2: obtaining the temperature inside the oil cup and comparing it with a first preset temperature; if the temperature inside the oil cup is greater than the first preset temperature, then a signal to clean the oil cup is issued; if the temperature inside the oil cup is less than the first preset temperature, then step S1.1.1 is repeated.

9. The method for removing water from the oil cup of a range hood as described in claim 1, characterized in that, Step S1.2 further includes: if the volume of the medium in the oil cup is less than the first preset volume, then it is further determined whether the temperature of the medium in the oil cup is greater than 0℃; If the temperature of the medium inside the oil cup is greater than 0°C, then it is further determined whether the temperature of the medium inside the oil cup continues to decrease and has a trend of falling below 0°C; If the temperature of the medium in the oil cup continues to drop and tends to be below 0°C, the water in the oil cup is converted into ice, and then it is determined whether the total volume of the medium in the oil cup is less than the first preset volume; if the total volume of the medium in the oil cup is greater than the first preset volume, a signal to clean the oil cup is issued.

10. The method for removing water from the oil cup of a range hood as described in claim 9, characterized in that, Step S1.2 further includes: if the temperature of the medium in the oil cup is less than 0°C, or if the temperature of the medium in the oil cup does not continue to decrease and has a trend of being lower than 0°C, or if the total volume of the medium in the oil cup is less than the first preset volume, then step S1.1 is repeated.

11. A range hood, characterized in that, The range hood uses the oil cup water removal method as described in any one of claims 1-10.

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