Range hood and control method thereof

Abstract

The invention discloses a range hood and a control method thereof, relates to the field of kitchen appliances, and aims to solve the problems of heavy cleaning burden and long waiting time of a user. The range hood comprises a box body, an oil cup and a heating piece, an installation cavity and an oil discharge hole communicated with the installation cavity are formed in the box body, the oil cup is arranged below the box body and connected with the box body, an opening of the oil cup is located below the oil discharge hole and faces the oil discharge hole, the heating piece is connected to the lower portion of the box body, an opening is located below the heating piece and faces the heating piece, and the heating piece is used for radiating heat into the oil cup. And oil stains in the oil cup are heated. And the oil discharge hole and the heating piece are arranged at an interval in the horizontal direction, so that oil dirt in the mounting cavity flows into the oil cup through the oil discharge hole. The heating piece does not make contact with oil dirt, so that a user does not need to clean the heating piece, the heating piece transfers heat in a radiation mode, the heating efficiency is high, and the oil dirt temperature rising speed is high. Therefore, the problems of heavy cleaning burden and long waiting time of the user can be solved.

Description

Technical Field

[0001] The present invention relates to the field of kitchen appliances, and in particular to a range hood and a control method thereof. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. A complete oil circuit structure is set inside the range hood. After a part of the oil smoke passes through the centrifugal action of the volute component, it forms oil droplets on the inner wall, slides down the inner wall of the volute, and flows into the oil cup through the oil leakage holes on the volute; the other part is the condensed oil on the inner wall of the box body, which will eventually gather in the oil cup. Users generally clean the oil cup once in a while.

[0003] In winter, the oil will condense into lumps, making it impossible to clean thoroughly. Long-term accumulation of oil will cause mold and blackening, seriously affecting the user experience.

[0004] In the related art, a heating plate is set in the oil cup to melt the oil, which is convenient for cleaning. However, the oil will contaminate the heating plate, increasing the cleaning burden of the user. In addition, the oil melts slowly when heated by the heating plate, and the user needs to wait for a long time. Summary of the invention

[0005] The embodiments of the present invention provide a range hood and a control method thereof, which solve the problems of heavy cleaning burden and long waiting time for users.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a range hood, comprising a housing, an oil cup, and a heating element. The housing is formed with a mounting cavity and an oil drain hole connected to the mounting cavity, the oil cup is arranged below the housing and connected to the housing, the opening of the oil cup is located below the oil drain hole and faces the oil drain hole, the heating element is connected below the housing, the opening is located below the heating element and faces the heating element, and the heating element is used to radiate heat into the oil cup to heat the oil in the oil cup. The oil drain hole and the heating element are arranged at intervals in the horizontal direction so that the oil in the mounting cavity flows into the oil cup through the oil drain hole.

[0008] The range hood provided in the embodiment of the present application heats the oil in the oil cup by radiating heat from the heating element to the oil cup, so that the heating element does not come into contact with the oil. At the same time, the oil drain hole and the heating element are arranged horizontally at intervals, so that the oil in the installation cavity can flow into the oil cup through the oil drain hole and avoid the heating element. In this way, through the above arrangement, the user can easily clean the oil cup, and the user only needs to clean the oil cup without cleaning the heating element.

[0009] In addition, the related art uses a heating plate to transfer heat, and the heating plate itself requires a certain amount of time to heat up, and the heat also needs to be transferred to the oil in the oil cup through conduction. The present application uses radiation to transfer heat, which can directly transfer heat to the oil in the oil cup, thereby improving the heating efficiency, and the oil heats up quickly, and the user needs to wait for a shorter time.

[0010] Therefore, the range hood provided in the embodiment of the present application can solve the problems of heavy cleaning burden and long waiting time for users.

[0011] In some embodiments, the range hood further comprises a temperature detector and a controller. The temperature detector is used to detect the temperature of the oil stain in the oil cup, and the controller is connected to the temperature detector and to the heating element. The controller is configured to determine the heating power of the heating element according to the temperature.

[0012] In some embodiments, the controller determines the heating power of the heating element according to the temperature, and is specifically configured to: determine the temperature range to which the temperature belongs, and determine the heating power corresponding to the temperature range according to a preset correspondence relationship. The preset correspondence relationship includes multiple temperature ranges and the heating power corresponding to each temperature range.

[0013] In some embodiments, the controller is further configured to: turn on the heating element when the temperature is less than a first preset temperature; and turn off the heating element when the temperature is greater than a second preset temperature, wherein the second preset temperature is greater than the first preset temperature.

[0014] In some embodiments, the range hood further comprises a liquid level detector, which is used to detect the liquid level value of the oil stain in the oil cup, and the liquid level detector is connected to the controller. The controller executes turning on the heating element when the temperature is less than the first preset temperature, and is specifically configured to turn on the heating element when the liquid level value is greater than the preset liquid level value and the temperature is less than the first preset temperature.

[0015] In some embodiments, the box body includes a bottom plate, the bottom plate includes a recessed portion, and the recessed portion is formed by a portion of the bottom plate being recessed toward the installation cavity. The recessed portion forms an accommodating cavity, the heating element is accommodated in the accommodating cavity and connected to the recessed portion, and / or the oil drain hole is provided on the bottom plate and is located on at least one side of the recessed portion.

[0016] The embodiment of the present application also provides a range hood, comprising a housing, an oil cup and a heating element. The housing is formed with a mounting cavity and an oil drain hole connected to the mounting cavity, the oil cup is arranged below the housing and connected to the housing, the opening of the oil cup is located below the oil drain hole and faces the oil drain hole, the heating element is connected below the housing, the opening is located below the heating element and faces the heating element, and the heating element is used to radiate heat into the oil cup to heat the oil in the oil cup. The oil in the mounting cavity can flow into the oil cup through the oil drain hole to avoid the heating element.

[0017] The range hood provided in the embodiment of the present application heats the oil in the oil cup by radiating heat from the heating element to the oil cup, so that the heating element does not come into contact with the oil, and at the same time, the oil in the installation cavity can flow into the oil cup through the oil drain hole and avoid the heating element. Thus, through the above arrangement, the user can easily clean the oil cup, and the user only needs to clean the oil cup without cleaning the heating element.

[0018] In addition, the related art uses a heating plate to transfer heat, and the heating plate itself requires a certain amount of time to heat up, and the heat also needs to be transferred to the oil in the oil cup through conduction. The present application uses radiation to transfer heat, which can directly transfer heat to the oil in the oil cup, thereby improving the heating efficiency, and the oil heats up quickly, and the user needs to wait for a shorter time.

[0019] Therefore, the range hood provided in the embodiment of the present application can solve the problems of heavy cleaning burden and long waiting time for users.

[0020] In a second aspect, an embodiment of the present application provides a method for controlling a range hood, the method comprising:

[0021] Get the temperature of the oil in the oil cup;

[0022] Determine the temperature range to which the temperature belongs, and determine the heating power of the heating element according to a preset corresponding relationship, the heating power corresponds to the temperature range, and the preset corresponding relationship includes multiple temperature ranges and the heating power corresponding to each temperature range.

[0023] The control method of the range hood provided in the embodiment of the present application establishes a corresponding relationship between the temperature range and the heating power. When the initial temperature of the oil cup is low, the heating power of the heating element will be higher, thereby shortening the melting time of the oil stains in the oil cup and improving the user experience.

[0024] The present application also provides a control method for a range hood, the method comprising:

[0025] Get the temperature of the oil in the oil cup;

[0026] When the temperature is lower than the first preset temperature, turning on the heating element;

[0027] When the temperature is greater than the second preset temperature, the heating element is turned off.

[0028] The second preset temperature is greater than the first preset temperature.

[0029] The control method of the range hood provided in the embodiment of the present application ensures that the oil stains in the oil cup can be melted by setting the first preset temperature and the second preset temperature, thereby facilitating cleaning by the user.

[0030] In some embodiments, when the temperature is less than a first preset temperature, turning on the heating element includes:

[0031] Get the liquid level value of the oil in the oil cup;

[0032] When the liquid level value is greater than the preset liquid level value and the temperature is less than the first preset temperature, the heating element is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a range hood provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of a range hood provided in an embodiment of the present application with part of the decorative panel removed;

[0035] Figure 3 for Figure 1 Middle AA section view;

[0036] Figure 4 A schematic diagram of the structure of a fan provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of the structure of the cooperation between a part of the box and the oil cup provided in the embodiment of the present application;

[0038] Figure 6 An exploded schematic diagram of a range hood provided in an embodiment of the present application;

[0039] Figure 7 A schematic diagram of the structure of a range hood without an oil cup provided in an embodiment of the present application;

[0040] Figure 8 One of the structural schematic diagrams of the bottom plate, the oil drain hole and the heating element provided in the embodiment of the present application;

[0041] Fig. 9 The second structural schematic diagram of the bottom plate, the oil drain hole and the heating element provided in the embodiment of the present application;

[0042] Fig.10 for Figure 5 Middle BB section view;

[0043] Fig.11 The third structural diagram of the bottom plate, the oil drain hole and the heating element provided in the embodiment of the present application;

[0044] Fig.12 One of the working flow diagrams of the range hood provided in the embodiment of the present application;

[0045] Fig.13 The second working flow diagram of the range hood provided in the embodiment of the present application;

[0046] Fig.14 One of the flow charts of the control method of the range hood provided in the embodiment of the present application;

[0047] Fig.15 A second flowchart of the control method of the range hood provided in the embodiment of the present application;

[0048] Fig.16 This is a third flowchart of the range hood control method provided in an embodiment of the present application.

[0049] Figure numerals: 1, range hood; 10, housing; 101, installation cavity; 11, bottom plate; 111, oil drain hole; 112, recessed portion; 1121, accommodating cavity; 20, oil cup; 30, heating element; 31, connecting piece; 40, temperature detector; 50, liquid level detector; 60, fan; 601, oil leakage hole; 70, oil net; 80, decorative panel; 90, magnetic element. DETAILED DESCRIPTION

[0050] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0054] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0055] A range hood is a kitchen appliance that purifies the kitchen environment. A complete oil circuit structure is set inside the range hood. After a part of the oil smoke passes through the centrifugal action of the volute component, it forms oil droplets on the inner wall, slides down the inner wall of the volute, and flows into the oil cup through the oil leakage holes on the volute; the other part is the condensed oil on the inner wall of the box body, which will eventually gather in the oil cup. Users generally clean the oil cup once in a while.

[0056] In winter, the oil in the oil cup will condense into lumps, making it impossible to clean it thoroughly. Long-term accumulation of oil will cause mold and blackening, seriously affecting the user experience.

[0057] In the related art, a heating plate is set in the oil cup to melt the oil, which is convenient for cleaning. However, the oil will contaminate the heating plate, increasing the cleaning burden of the user. In addition, the oil melts slowly when heated by the heating plate, and the user needs to wait for a long time.

[0058] refer to Figure 1 The embodiment of the present application provides a range hood 1, which can be a side suction range hood, a top suction range hood, etc. The range hood 1 includes a housing 10, a decorative panel 80, and an oil cup 20. The housing is mounted on a wall, the decorative panel is located at the front side of the housing 10, and the front side refers to the side of the housing away from the wall, and the oil cup 20 is located below the housing 10 and the decorative panel 80.

[0059] refer to Figure 2 and Figure 3 The range hood 1 also includes a fan 60 and an oil net 70. The housing 10 is formed with a mounting cavity 101, and the fan 60 is mounted in the mounting cavity 101. The oil smoke enters the mounting cavity 101 through the mesh of the oil net 70, and then forms oil stains after being separated by the fan 60. The bottom of the fan 60 is provided with an oil leakage hole 601 (see Figure 4 ), the oil inside the fan 60 can flow out through the oil leakage hole 601, and the oil on the cavity wall of the installation cavity 101 can flow downward along the cavity wall.

[0060] refer to Figure 5 , and combined with Figure 3The housing 10 is also formed with an oil drain hole 111 connected to the installation cavity 101. The oil drain hole 111 is located at the bottom of the housing 10. The oil inside the fan 60 and the oil on the wall of the installation cavity 101 can flow to the oil drain hole 111. The oil cup 20 is arranged below the housing 10 and connected to the housing 10. The opening of the oil cup 20 is located below the oil drain hole 111 and faces the oil drain hole 111. In this way, through the above arrangement, the oil inside the fan 60 and the oil on the wall of the installation cavity 101 can flow into the oil cup 20 through the oil drain hole 111, thereby realizing the collection of the oil.

[0061] Exemplarily, the oil cup 20 may be connected to the housing 10 by means of threaded connection, snap connection, magnetic connection, or the like.

[0062] In some possible embodiments, the box body 10 is provided with a first recessed portion, and the oil cup 20 is provided with a first clamping portion, and the first clamping portion can be clamped into the first recessed portion to connect the oil cup 20 with the box body 10. Under the action of an external force, for example, a pulling force is provided to the oil cup 20 in a direction away from the box body 10, so that the first clamping portion can be disengaged from the first recessed portion, thereby separating the oil cup 20 from the box body 10, and then the user can clean the oil cup 20. After the user finishes cleaning, the oil cup 20 is reconnected to the box body 10 by clamping the first clamping portion into the first recessed portion again.

[0063] Of course, a first clamping portion may be provided on the box body 10 , and a first recessed portion may be provided on the oil cup 20 .

[0064] In some other possible embodiments, the box body 10 is provided with a first magnetic attraction portion, and the oil cup 20 is provided with a second magnetic attraction portion, and the first magnetic attraction portion and the second magnetic attraction portion can be magnetically attracted to each other to magnetically connect the oil cup 20 to the box body 10. Under the action of an external force, for example, a pulling force is provided to the oil cup 20 in a direction away from the box body 10, so that the first magnetic attraction portion and the second magnetic attraction portion can be disconnected from the magnetic connection, thereby separating the oil cup 20 from the box body 10, and then the user can clean the oil cup 20. After the user finishes cleaning, the oil cup 20 is reconnected to the box body 10 by magnetically connecting the first magnetic attraction portion and the second magnetic attraction portion again.

[0065] Continue to refer Figure 3 The range hood 1 further includes a heating element 30. The heating element 30 is connected to the bottom of the housing 10. The opening of the oil cup 20 is located below the heating element 30 and faces the heating element 30. The heating element 30 is used to radiate heat into the oil cup 20 to heat the oil in the oil cup 20, thereby melting the condensed oil for easy cleaning by the user.

[0066] In this way, the oil stains in the oil cup 20 are heated by radiating heat from the heating element 30 to the oil cup 20 , so that the heating element 30 will not contact the oil stains, and the oil stains will not contaminate the heating element 30 .

[0067] The oil in the installation cavity 101 can flow into the oil cup 20 through the oil drain hole 111 to avoid the heating element 30. Thus, through the above arrangement, the user can easily clean the oil cup 20, and the user only needs to clean the oil cup 20 without cleaning the heating element 30, thereby reducing the cleaning burden of the user.

[0068] In addition, in the related art, a heating plate is used to transfer heat, and the heating plate itself needs a certain amount of time to heat up, and the heat also needs to be transferred to the oil in the oil cup by conduction. In the present application, radiation is used to transfer heat, which can directly transfer heat to the oil in the oil cup 20, thereby improving the heating efficiency, and the oil heats up quickly, and the user needs to wait for a shorter time.

[0069] Therefore, the range hood provided in the embodiment of the present application can solve the problems of heavy cleaning burden and long waiting time for users.

[0070] Exemplarily, the heating element 30 may be a laser heating device, an infrared heating device, etc. The laser heating device may be a laser thermal processor, etc., and the infrared heating device may be an infrared heating lamp, an infrared heater, etc.

[0071] Exemplarily, the heating element 30 can be connected to the housing 10 by means of threaded connection, snap connection, magnetic connection, etc.

[0072] In some possible embodiments, a second recessed portion is provided at the bottom of the housing 10, and a second clamping portion is provided on the heating element 30, and the second clamping portion can be clamped into the second recessed portion to connect the heating element 30 to the housing 10. Under the action of an external force, for example, a pulling force in a direction away from the housing 10 is provided to the heating element 30, so that the second clamping portion can be disengaged from the second recessed portion, thereby separating the heating element 30 from the housing 10.

[0073] In some other possible embodiments, a third magnetic attraction portion is provided at the bottom of the housing 10, and a fourth magnetic attraction portion is provided on the heating element 30, and the third magnetic attraction portion can be magnetically attracted to the fourth magnetic attraction portion to connect the heating element 30 to the housing 10. Under the action of an external force, for example, a pulling force is provided to the heating element 30 in a direction away from the housing 10, so that the third magnetic attraction portion and the fourth magnetic attraction portion can be disconnected from the magnetic connection, thereby separating the heating element 30 from the housing 10.

[0074] refer to Figure 6 It can be understood that the material of the box body 10 is stainless steel, and a connecting piece 31 is added to the heating element 30. The material of the connecting piece is iron, stainless steel or other materials that can be magnetically attracted. The box body 10 can be magnetically connected to the connecting piece 31 through the magnetic attraction piece 90, so that the box body 10 and the heating element 30 are magnetically connected.

[0075] refer to Figure 7In some embodiments, the oil drain hole 111 and the heating element 30 are arranged horizontally at intervals, so that the oil in the installation cavity 101 flows into the oil cup 20 through the oil drain hole 111 and avoids the heating element 30. In this way, through the above arrangement, the user can easily clean the oil cup 20, and the user only needs to clean the oil cup 20 without cleaning the heating element 30, thereby reducing the cleaning burden of the user.

[0076] refer to Figure 8 For example, the heating element 30 and the oil drain hole 111 are arranged along Figure 8 The left and right spacing settings shown in .

[0077] refer to Fig. 9 Of course, the heating element 30 and the oil drain hole 111 can also be arranged along Fig. 9 The front-to-back spacing settings shown in .

[0078] refer to Fig.10 , and combined with Figure 6 In some other embodiments, the box body 10 includes a bottom plate 11, and the bottom plate 11 includes a recessed portion 112, which is formed by a portion of the bottom plate 11 being recessed toward the installation cavity 101. The recessed portion 112 forms an accommodating cavity 1121, and the heating element 30 is accommodated in the accommodating cavity 1121 and connected to the recessed portion 112.

[0079] In this way, by providing the recessed portion 112, the internal space of the box body 10 can be fully utilized, so that the distance between the bottom plate 11 of the box body 10 and the oil cup 20 is small, and the heating element 30 and the oil cup 20 have a certain distance, which improves the compactness of the structure and hides the heating element 30 in the recessed portion 112, which is also beneficial to improving the appearance of the range hood 1, thereby enhancing the user experience.

[0080] Continue to refer Figure 6 and Fig.10 In some other embodiments, the oil drain hole 111 is provided on the bottom plate 11 and is located on at least one side of the recessed portion 112. That is, the oil drain hole 111 and the heating element 30 are arranged horizontally at intervals, and the recessed portion 112 forms an escape space, so that the oil in the installation cavity 101 can flow into the oil cup 20 through the oil drain hole 111 and avoid the heating element 30. In this way, the heating element 30 will not come into contact with the oil, and the user only needs to clean the oil cup 20, without cleaning the heating element 30, thereby reducing the cleaning burden of the user.

[0081] For example, the number and shape of the oil drain holes 111 can be set as needed. The number of the oil drain holes 111 can be one or more, and the shape of the oil drain holes 111 can be circular, elliptical, etc., which is not specifically limited in this embodiment.

[0082] When only one oil drain hole 111 is provided, the oil drain hole 111 may be provided at any position around the recessed portion 112 .

[0083] refer to Figure 8 , Fig.10 and Fig.11 When there are multiple oil drainage holes 111, the multiple oil drainage holes 111 can be set on the same side of the recessed portion 112, or some of the oil drainage holes 111 are set on one side of the recessed portion 112, and another part of the oil drainage holes 111 are set on the other side of the recessed portion 112.

[0084] Continue to refer Figure 6 and Figure 7 In some embodiments, the range hood 1 further includes a temperature detector 40 and a controller (not shown). The temperature detector 40 is used to detect the temperature of the oil stain in the oil cup 20, and the controller is connected to the temperature detector 40 and the heating element 30. The temperature detector 40 can transmit the measured temperature to the controller, and the controller is configured to determine the heating power of the heating element 30 according to the temperature, that is, the controller can determine the starting heating power of the heating element 30 according to the input temperature, and transmit the heating power to the heating element 30.

[0085] In this way, the heating power of the heating element 30 is determined according to the initial temperature of the oil stain, so as to ensure that the heating time is always maintained at a certain time. In this embodiment, the time is 5 minutes. In this way, no matter what the initial temperature of the oil stain in the oil cup 20 is, the constant heating time can be maintained, avoiding long waiting time for users and improving the user experience.

[0086] Exemplarily, the temperature detector 40 may be a contact thermometer, a non-contact infrared thermometer, etc. It is understandable that when the temperature detector 40 is a contact thermometer, the head of the thermometer needs to be placed in the oil stain so that the temperature of the oil stain can be detected even when the thickness of the oil stain is relatively thin.

[0087] Continue to refer Figure 6 and Figure 7 For example, the temperature detector 40 may be disposed on the bottom plate 11 and located on one side of the recessed portion 112 in the left-right direction. A through hole may be provided on the bottom plate 11, and the temperature detector 40 may be fastened to the bottom plate 11 using a fastener.

[0088] Exemplarily, the controller is a power board chip of the range hood 1 .

[0089] The range hood 1 further includes a control panel, an electrical box and a power board. The control panel is a display and operation panel, which is usually arranged on the front of the range hood 1, so that the user can view information and perform operations. The control panel includes a switch board, through which the heating element 30 is electrically connected to the power board, and the outlet terminals on the heating element 30 are connected to the electric control connection line, which is plugged into the switch board, so as to electrically connect the heating element 30 to the switch board, and the switch board is used to turn on or off the heating element 30.

[0090] The power board is arranged in the electrical box, and the temperature detector 40 is electrically connected to the power board through a wire. For example, the wire can be fixed on the cavity wall of the installation cavity 101 by a wire clamping sucker, and plugged into the power board along the cavity wall of the installation cavity 101 through the electrical box sealing channel structure.

[0091] The power board is provided with a chip that can store and process data. After the signals of the heating element 30 and the temperature detector 40 are transmitted to the power board, the power board chip will output an electrical signal to the switch board to turn on the heating element 30 with a certain heating power. The temperature detector 40 detects the temperature of the oil stain in real time. When the temperature of the oil stain rises to a certain temperature, that is, when the temperature measured by the temperature detector 40 is a certain temperature, it is determined that the oil stain has melted. At this time, the power board will also output an electrical signal to the switch board to turn off the heating element 30.

[0092] In some embodiments, the controller determines the heating power of the heating element 30 according to the temperature, and is specifically configured to: determine the temperature range to which the temperature belongs, and determine the heating power corresponding to the temperature range according to a preset correspondence, wherein the preset correspondence includes multiple temperature ranges and the heating power corresponding to each temperature range.

[0093] Under the condition of ensuring that the heating time is constant, a corresponding relationship between the temperature range to which the initial temperature of the oil stain belongs and the heating power of the heating element 30 is established, as shown in the following Table 1:

[0094] Table 1

[0095]

[0096] It can be seen from Table 1 above that when the temperature range to which the initial temperature of the oil stain belongs is low, the heating power of the heating element 30 is relatively high; when the temperature range to which the initial temperature of the oil stain belongs is high, the heating power of the heating element 30 is relatively low. In this way, a constant heating time can be maintained, avoiding a long waiting time for the user, and improving the user's experience.

[0097] It can be understood that the specific values ​​in the corresponding relationship between the temperature range to which the initial temperature of the oil stain belongs and the heating power of the heating element 30 can be set as needed, and this embodiment does not make any specific limitation to this.

[0098] Of course, a corresponding relationship between the initial temperature of the oil stain and the heating power of the heating element 30 can also be established. When the initial temperature of the oil stain is low, the corresponding heating power is high, and when the initial temperature of the oil stain is high, the corresponding heating power is low.

[0099] In some embodiments, the controller is further configured to: when the temperature is less than the first preset temperature, determine that the oil stain is condensed and turn on the heating element 30; when the temperature is greater than the second preset temperature, determine that the oil stain is melted and turn off the heating element 30. The second preset temperature is greater than the first preset temperature. In this embodiment, the second preset temperature is set to 70°C.

[0100] refer to Fig.12 In some embodiments, a heating key is provided on the control panel of the range hood 1, and the user can heat the oil stains in the oil cup 20 by controlling the opening and closing of the heating key. Fig.12 This is a flow chart of the operation of the heating element 30 of the range hood 1 from the start to the end.

[0101] First, the range hood 1 is turned on, the power board and the display panel are powered on, and the user activates the heating button. The temperature detector 40 detects the temperature of the oil stain in the oil cup 20 in real time, which is the initial temperature of the oil stain, and outputs the initial temperature to the power board chip. Next, the temperature range to which the initial temperature belongs is determined. According to the corresponding relationship between the temperature range to which the initial temperature of the oil stain belongs and the heating power of the heating element 30, the power board chip determines the heating power of the heating element 30 and controls the switch board to turn on the heating element 30 with the heating power.

[0102] During the heating process of the heating element 30, the temperature detector 40 detects the temperature of the oil stain in real time. When the temperature of the oil stain is higher than a certain temperature, for example, when the temperature of the oil stain is higher than 70°C, the power board chip controls the switch board to turn off the heating element 30, and the heating work ends. At this time, the heating key will keep flashing, accompanied by a sound, reminding the user that the oil stain has completely melted and can start cleaning. When the temperature of the oil stain is not higher than 70°C, the heating element 30 continues to heat until the temperature of the oil stain is higher than 70°C.

[0103] Continue to refer Figure 6 and Figure 7 In some embodiments, the range hood 1 further comprises a liquid level detector 50, which is used to detect the liquid level value of the oil stain in the oil cup 20, and the liquid level detector 50 is connected to the controller. The controller executes turning on the heating element 30 when the temperature is less than the first preset temperature, and is specifically configured as: turning on the heating element 30 when the liquid level value is greater than the preset liquid level value and the temperature is less than the first preset temperature.

[0104] Exemplarily, the controller is a power board chip, and the liquid level detector 50 is connected to the power board through a wire, that is, the liquid level detector 50 can be connected to the power board chip, and the liquid level value of the oil stain in the oil cup 20 measured by the liquid level detector 50 can be transmitted to the power board chip for storage.

[0105] For example, the liquid level detector 50 is a non-contact liquid level detector, which can monitor the liquid level value of the oil stain without contacting the oil stain. In this way, the liquid level detector 50 is prevented from being wrapped by the oil stain during use, which not only ensures the accuracy of the detection of the liquid level detector 50 but also does not need to regularly clean the dirt on the liquid level detector 50, and is easy to use.

[0106] Continue to refer Figure 6 and Figure 7 For example, the liquid level detector 50 can be disposed on the bottom plate 11 and located on one side of the recessed portion 112 in the left-right direction. A through hole can be opened on the bottom plate 11, and the liquid level detector 50 can be fastened to the bottom plate 11 using a fastener.

[0107] In some embodiments, the range hood 1 can automatically heat the oil in the oil cup 20. The specific heating process is as follows: Fig.13 shown.

[0108] First, the range hood 1 is turned on, the power board and the display panel are powered on, and the liquid level detector 50 detects the liquid level value of the oil stain in the oil cup 20 in real time, and determines the difference between the liquid level value and the preset liquid level value, which is the value at which the oil stain in the oil cup 20 reaches the cleaning amount. When the liquid level value is less than or equal to the preset liquid level value, it indicates that the oil stain in the oil cup 20 does not need to be cleaned, and the heating element 30 does not work at this time, and the range hood 1 works normally.

[0109] When the liquid level value is greater than the preset liquid level value, it indicates that the oil stains in the oil cup 20 need to be cleaned. At this time, the temperature detector 40 starts to work. The temperature detector 40 detects the temperature of the oil stains in the oil cup 20 in real time. The temperature is the initial temperature of the oil stains, and outputs the initial temperature to the power board chip. Next, the temperature range to which the initial temperature belongs is judged. According to the corresponding relationship between the temperature range to which the initial temperature of the oil stains belongs and the heating power of the heating element 30, the power board chip determines the heating power of the heating element 30, and controls the switch board to turn on the heating element 30 with the heating power.

[0110] During the heating process of the heating element 30, the temperature detector 40 detects the temperature of the oil stain in real time. When the temperature of the oil stain is higher than a certain temperature, for example, when the temperature of the oil stain is higher than 70°C, the power board chip controls the switch board to turn off the heating element 30, and the heating work ends. At this time, the heating key will keep flashing, accompanied by a sound, reminding the user that the oil stain has completely melted and can start cleaning. When the temperature of the oil stain is not higher than 70°C, the heating element 30 continues to heat until the temperature of the oil stain is higher than 70°C.

[0111] refer to Fig.14 In some embodiments, the present application further provides a control method for a range hood, which is applied to the above range hood, and the method includes:

[0112] Step S100: obtaining the temperature of the oil stain in the oil cup;

[0113] Step S200: determine the temperature range to which the temperature belongs, and determine the heating power of the heating element according to a preset corresponding relationship, the heating power corresponds to the temperature range, and the preset corresponding relationship includes multiple temperature ranges and the heating power corresponding to each temperature range.

[0114] Combining Table 1 and Figures 1 to 13 When the temperature range to which the initial temperature of the oil stain belongs is low, the heating power of the heating element 30 is relatively high; when the temperature range to which the initial temperature of the oil stain belongs is high, the heating power of the heating element 30 is relatively low.

[0115] By establishing a corresponding relationship between the temperature range and the heating power, when the initial temperature of the oil cup 20 is low, the heating power of the heating element 30 will be higher, thereby shortening the melting time of the oil stains in the oil cup 20. Regardless of the initial temperature of the oil stains in the oil cup 20, a constant heating time can be maintained, thereby avoiding long waiting time for users and improving user experience.

[0116] Of course, a corresponding relationship between the initial temperature of the oil stain and the heating power of the heating element 30 can also be established. When the initial temperature of the oil stain is low, the corresponding heating power is high, and when the initial temperature of the oil stain is high, the corresponding heating power is low.

[0117] Specifically, the temperature detector 40 detects the temperature of the oil stain in the oil cup 20 in real time, which is the initial temperature of the oil stain, and outputs the initial temperature to the power board chip. Next, the temperature range to which the initial temperature belongs is determined. According to the correspondence between the temperature range to which the initial temperature of the oil stain belongs and the heating power of the heating element 30, the power board chip determines the heating power of the heating element 30 and controls the switch board to turn on the heating element 30 with the heating power.

[0118] refer to Fig.15In some embodiments, the present application further provides a control method for a range hood, which is applied to the above range hood, and the method includes:

[0119] Step S100: obtaining the temperature of the oil stain in the oil cup;

[0120] Step S300: when the temperature is lower than the first preset temperature, turning on the heating element;

[0121] Step S400: when the temperature is greater than the second preset temperature, turning off the heating element.

[0122] The second preset temperature is greater than the first preset temperature.

[0123] Combination Figures 1 to 13 When the temperature is lower than the first preset temperature, the oil stain is determined to be condensed, and the heating element 30 is turned on; when the temperature is higher than the second preset temperature, the oil stain is determined to be melted, and the heating element 30 is turned off. The second preset temperature is higher than the first preset temperature. In this embodiment, the second preset temperature is set to 70°C.

[0124] In this way, by setting the first preset temperature and the second preset temperature, it is ensured that the oil stains in the oil cup 20 can be melted, thereby facilitating cleaning by the user.

[0125] Specifically, the temperature detector 40 detects the temperature of the oil stain in the oil cup 20 in real time, which is the initial temperature of the oil stain, and outputs the initial temperature to the power board chip, and then compares the initial temperature with the first preset temperature and the second preset temperature. When the initial temperature of the oil stain is lower than the first preset temperature, the power board chip controls the switch board to turn on the heating element 30. When the initial temperature of the oil stain is higher than the second preset temperature, the power board chip controls the switch board to turn off the heating element 30.

[0126] It is understandable that when the initial temperature of the oil stain is less than the first preset temperature, the power board chip controls the switch board to turn on the heating element 30. During the heating process of the heating element 30, the temperature detector 40 detects the temperature of the oil stain in real time. When the temperature of the oil stain is higher than the second preset temperature, for example, when the temperature of the oil stain is higher than 70°C, the power board chip controls the switch board to turn off the heating element 30, and the heating work ends. At this time, the heating button will keep flashing, accompanied by a sound, reminding the user that the oil stain has completely melted and can start cleaning. When the temperature of the oil stain is not higher than 70°C, the heating element 30 continues to heat until the temperature of the oil stain is higher than 70°C.

[0127] refer to Fig.16 In some embodiments, when the temperature is less than a first preset temperature, turning on the heating element includes:

[0128] Step S310: obtaining the liquid level value of the oil stain in the oil cup;

[0129] Step S320: When the liquid level value is greater than the preset liquid level value and the temperature is less than the first preset temperature, turn on the heating element.

[0130] By comparing the liquid level value of the oil stain in the oil cup 20 detected in real time by the liquid level detector 50 with the preset liquid level value, it is determined whether the oil stain needs to be cleaned. When the oil stain is determined to need to be cleaned, it is determined whether the oil stain needs to be heated in combination with the initial temperature of the oil stain detected in real time by the temperature detector 40. When the initial temperature of the oil stain is lower than the first preset temperature, it is determined that the oil stain needs to be heated, and the heating element 30 starts to work.

[0131] In this way, through the cooperation of the liquid level detector 50, the temperature detector 40 and the heating element 30, the range hood 1 can automatically heat the oil stains in the oil cup 20 without the user activating the heating button for heating, thereby improving the intelligence of the range hood 1 and enhancing the user experience.

[0132] Specifically, the liquid level detector 50 detects the liquid level value of the oil stain in the oil cup 20 in real time, and determines the size of the liquid level value and the preset liquid level value. When the liquid level value is greater than the preset liquid level value, it indicates that the oil stain in the oil cup 20 needs to be cleaned, and at this time the temperature detector 40 starts working.

[0133] The temperature detector 40 detects the temperature of the oil stain in the oil cup 20 in real time, which is the initial temperature of the oil stain, and outputs the initial temperature to the power board chip. When the initial temperature of the oil stain is lower than the first preset temperature, the temperature range to which the initial temperature belongs is determined. According to the corresponding relationship between the temperature range to which the initial temperature of the oil stain belongs and the heating power of the heating element 30, the power board chip determines the heating power of the heating element 30 and controls the switch board to turn on the heating element 30 with the heating power.

[0134] During the heating process of the heating element 30, the temperature detector 40 detects the temperature of the oil stain in real time. When the temperature of the oil stain is higher than the second preset temperature, for example, when the temperature of the oil stain is higher than 70°C, the power board chip controls the switch board to turn off the heating element 30, and the heating work ends. At this time, the heating key will keep flashing, accompanied by a sound, reminding the user that the oil stain has completely melted and can start cleaning. When the temperature of the oil stain is not higher than 70°C, the heating element 30 continues to heat until the temperature of the oil stain is higher than 70°C.

[0135] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0136] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0137] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A range hood, characterized in that: The range hood comprises: A box body, wherein the box body is formed with a mounting cavity and an oil drain hole communicated with the mounting cavity; An oil cup is disposed below the box body and connected to the box body, wherein the opening of the oil cup is located below the oil drain hole and faces the oil drain hole; A heating element is connected to the bottom of the box body, the opening is located below the heating element and faces the heating element, and the heating element is used to radiate heat into the oil cup to heat the oil stains in the oil cup; The oil drain hole and the heating element are arranged at intervals in the horizontal direction, so that the oil in the installation cavity flows into the oil cup through the oil drain hole.

2. The range hood according to claim 1, characterized in that: The range hood further comprises: A temperature detector, the temperature detector is used to detect the temperature of the oil stain in the oil cup; A controller, the controller is connected to the temperature detector and the heating element, and the controller is configured as follows: The heating power of the heating element is determined according to the temperature.

3. The range hood according to claim 2, characterized in that: The controller performs the step of determining the heating power of the heating element according to the temperature, and is specifically configured as follows: Determine the temperature range to which the temperature belongs, and determine the heating power corresponding to the temperature range according to a preset corresponding relationship; the preset corresponding relationship includes multiple temperature ranges and the heating power corresponding to each temperature range.

4. The range hood according to claim 2, characterized in that: The controller is also configured to: When the temperature is lower than a first preset temperature, turning on the heating element; When the temperature is greater than a second preset temperature, turning off the heating element; The second preset temperature is greater than the first preset temperature.

5. The range hood according to claim 4, characterized in that: The range hood further comprises a liquid level detector, which is used to detect the liquid level value of the oil stain in the oil cup, and the liquid level detector is connected to the controller; the controller executes the operation of turning on the heating element when the temperature is less than the first preset temperature, and is specifically configured as follows: When the liquid level value is greater than a preset liquid level value and the temperature is less than a first preset temperature, the heating element is turned on.

6. The range hood according to claim 1, characterized in that: The box body includes a bottom plate, the bottom plate includes a recessed portion, and the recessed portion is formed by a portion of the bottom plate being recessed toward the installation cavity; The recessed portion is formed with a receiving cavity, the heating element is received in the receiving cavity and connected to the recessed portion, and / or, The oil drain hole is arranged on the bottom plate and is located on at least one side of the recessed portion.

7. A range hood, characterized in that: The range hood comprises: A box body, wherein the box body is formed with a mounting cavity and an oil drain hole communicated with the mounting cavity; An oil cup is disposed below the box body and connected to the box body, wherein the opening of the oil cup is located below the oil drain hole and faces the oil drain hole; A heating element is connected to the bottom of the box body, the opening is located below the heating element and faces the heating element, and the heating element is used to radiate heat into the oil cup to heat the oil stains in the oil cup; The oil in the installation cavity can flow into the oil cup through the oil drain hole, avoiding the heating element.

8. A control method for a range hood, characterized in that: The method comprises: Get the temperature of the oil in the oil cup; Determine the temperature range to which the temperature belongs, and determine the heating power of the heating element according to a preset corresponding relationship, wherein the heating power corresponds to the temperature range; the preset corresponding relationship includes multiple temperature ranges and the heating power corresponding to each temperature range.

9. A control method for a range hood, characterized in that: The method comprises: Get the temperature of the oil in the oil cup; When the temperature is lower than the first preset temperature, turning on the heating element; When the temperature is greater than a second preset temperature, the heating element is turned off; the second preset temperature is greater than the first preset temperature.

10. The control method of the range hood according to claim 9, characterized in that: When the temperature is lower than the first preset temperature, turning on the heating element comprises: Get the liquid level value of the oil in the oil cup; When the liquid level value is greater than a preset liquid level value and the temperature is less than a first preset temperature, the heating element is turned on.

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