Range hood

Abstract

The range hood comprises a range hood module, a refrigeration module and an air guide module, the range hood module is provided with a ventilation opening, a heat dissipation opening of the refrigeration module is in fluid communication with the ventilation opening, the air guide module is arranged at the ventilation opening, the range hood module is used for absorbing oil fume in a target area and discharging the oil fume, and the refrigeration module is used for refrigerating the target area. The target area is an action area of the range hood, and the air guide module is a movable air guide module and is used for changing the form of the ventilation opening during movement. Therefore, heat generated by the refrigeration module can be discharged through the range hood module to reduce the temperature of the refrigeration module, the form of the ventilation opening can be adjusted in different use scenes, the use flexibility is high, and the working reliability of the range hood is improved.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a range hood. Background Technology

[0002] A range hood is a kitchen appliance that purifies the kitchen environment and is widely used in people's daily lives. It is installed above the kitchen stove and can exhaust the waste from stove combustion and the harmful fumes produced during cooking to the outside, while collecting the condensed oil droplets in an oil cup.

[0003] During cooking, the temperature in the kitchen is high, so a cooling module can be installed in the range hood to cool it down. However, the cooling module itself also generates heat when it is working. If the heat cannot be dissipated in time, the accumulated heat will cause the temperature of the cooling module to rise, affecting its heat exchange efficiency. Therefore, the reliability of integrating a cooling module into a range hood is low. Utility Model Content

[0004] Therefore, it is necessary to provide a more reliable range hood to address the issue of low reliability in refrigerated range hoods.

[0005] A range hood includes a range hood module, a cooling module, and an air guide module. The range hood module has a ventilation opening, the cooling module has a heat dissipation vent that is fluidly connected to the ventilation opening, and the air guide module is disposed at the ventilation opening.

[0006] The range hood module is used to absorb and exhaust cooking fumes from the target area; the cooling module is used to cool the target area, which is the effective area of ​​the range hood.

[0007] The air guide module is a movable air guide module, which is used to change the shape of the vent when it moves.

[0008] In one embodiment, the air guiding module includes a driving component and an air guiding plate. The driving component is connected to the air guiding plate, the air guiding plate is disposed at the vent, and the driving component is used to drive the air guiding plate to move.

[0009] In one embodiment, the drive assembly includes a push rod motor, the air guide plate includes a first air guide plate and a second air guide plate, the push rod motor is disposed on the first air guide plate and connected to the second air guide plate;

[0010] The driving component is used to drive the second air guide plate to move on the first air guide plate, so as to adjust the length of the second air guide plate extending out of the first air guide plate.

[0011] In one embodiment, the drive assembly further includes a rotary motor connected to the first air guide plate;

[0012] The rotary motor is used to drive the first air guide plate to rotate.

[0013] In one embodiment, the rotary motor includes a motor body, a rotating shaft, and motor wires. The motor wires are connected to the motor body, the rotating shaft is located at the center of the motor body, and the rotating shaft is connected to the first air guide plate.

[0014] In one embodiment, a controller is also included, which is connected to the air guide module and is used to control the movement of the air guide module.

[0015] In one embodiment, the refrigeration module includes a compressor, a heat dissipation module, and an indoor unit module, wherein the compressor, the heat dissipation module, and the indoor unit module are connected in series, and the heat dissipation port of the heat dissipation module serves as the heat dissipation port of the refrigeration module.

[0016] In one embodiment, the heat dissipation module includes a condenser and a cooling fan, the condenser, the compressor and the indoor unit module are connected in series, and the cooling fan is used to dissipate the heat emitted by the condenser.

[0017] In one embodiment, the indoor unit module includes an evaporator that is connected in communication with the condenser.

[0018] In one embodiment, the smoke hood module includes a centrifugal fan and a housing, the centrifugal fan being disposed inside the housing, and the ventilation opening being provided inside the housing.

[0019] The aforementioned range hood includes a range hood module, a cooling module, and an air guide module. The range hood module has a ventilation opening, and the cooling module's heat dissipation vent is fluidly connected to the ventilation opening. The air guide module is located at the ventilation opening. The range hood module absorbs and exhausts cooking fumes from the target area, while the cooling module cools the target area, which is the range hood's effective operating area. The air guide module is movable and changes the shape of the ventilation opening during movement. Thus, the heat generated by the cooling module can reach the range hood module through the heat dissipation vent and the ventilation opening, and then be exhausted through the range hood module, thereby lowering the temperature of the cooling module. Furthermore, by incorporating a movable air guide module at the ventilation opening, the shape of the ventilation opening can be adjusted for different usage scenarios. This facilitates better heat dissipation from the cooling module into the range hood module for exhaust, and effectively reduces the possibility of cooking fumes drawn into the range hood module flowing back into the cooling module, causing contamination and reduced performance. This high flexibility improves the reliability of the range hood. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structural block of a range hood in one embodiment;

[0022] Figure 2 This is a schematic diagram of the air guide module in one embodiment;

[0023] Figure 3 This is a schematic diagram of the air guide module in another embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of a range hood in one embodiment. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0027] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0028] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0029] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0030] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0031] In one embodiment, such as Figure 1 As shown, a range hood is provided, including a range hood module, a cooling module, and an air guide module. The range hood module has a ventilation opening, and the heat dissipation vent of the cooling module is fluidly connected to the ventilation opening. The air guide module is located at the ventilation opening. The range hood module is used to absorb and exhaust cooking fumes from a target area. The cooling module is used to cool the target area, which is the effective area of ​​the range hood. The air guide module is a movable air guide module, used to change the shape of the ventilation opening when moving. Thus, the heat generated by the cooling module can reach the range hood module through the heat dissipation vent and the ventilation opening, and then be exhausted through the range hood module, thereby reducing the temperature of the cooling module. Furthermore, by setting a movable air guide module at the ventilation opening, the shape of the ventilation opening can be adjusted in different usage scenarios. This facilitates better heat dissipation from the cooling module to be introduced into the range hood module for exhaust, and effectively reduces the occurrence of cooking fumes drawn into the range hood module flowing back into the cooling module, causing contamination and reduced performance. This provides high flexibility and improves the reliability of the range hood.

[0032] The target area is the area of ​​operation of the range hood. For example, when the range hood is used in the kitchen, the area of ​​operation for absorbing fumes is the kitchen, and it can absorb the fumes in the kitchen, so the target area is the kitchen.

[0033] When the range hood module is working, it can create negative pressure, so that the oil fumes in the target area can be sucked in through the oil fume inlet and discharged through the oil fume outlet, such as to a public flue or outdoors, thereby reducing the oil fumes in the target area.

[0034] The refrigeration module is used to cool a target area. The type of refrigeration module is not limited, as long as it can achieve the cooling function. For example, the refrigeration module may include a compressor, a heat dissipation module, and an indoor unit module, which are connected to form a refrigeration cycle loop. The refrigeration cycle takes place within this loop, including a compression process in the compressor, a condensation process in the heat dissipation module, an expansion process in the connecting pipes, and an evaporation process in the indoor unit module. Using a limited amount of refrigerant in a closed refrigeration system, the refrigerant is repeatedly compressed, condensed, expanded, and evaporated, continuously absorbing heat and vaporizing at the indoor unit module, thus achieving the cooling effect. The condensation process in the heat dissipation module generates heat, which can be discharged through the heat dissipation vents of the heat dissipation module. These vents also serve as heat dissipation vents for the refrigeration module and are fluidly connected to the ventilation openings. Therefore, the heat generated during condensation can reach the range hood module through the heat dissipation vents and ventilation openings, and be discharged through the range hood module. When the refrigeration module includes a compressor, a heat dissipation module, and an indoor unit module, the cooling effect is good and the cooling effect is significant.

[0035] Expandably, the cooling module can also have other structures, such as a fan module. The fan module is used to deliver air to a target area, circulating air within the target area to cool it down. For example, the fan module can deliver air to a cook in a kitchen to accelerate the airflow speed and lower the temperature of the area being blown by the air. The structure of the fan module is not unique. Exemplarily, in one embodiment, the fan module includes an air inlet, an air outlet, and a fan wheel, with the fan wheel disposed between the air inlet and the air outlet, which are connected to the target area. The fan module absorbs air from the target area through the air inlet and delivers air to the target area through the air outlet. When the fan wheel rotates, the air in the target area can pass through the air inlet, the fan wheel, and the air outlet in sequence, completing air circulation, accelerating the airflow speed within the target area, and thus achieving a cooling effect. When the cooling module includes a fan module, the heat dissipation vent of the cooling module can be located near the components that generate heat during operation in the fan module, such as near the fan wheel.

[0036] An air guide module is installed at the vent to alter the path of airflow, thus guiding the airflow. Furthermore, the air guide module is movable, meaning it can move within the vent. Additionally, the air guide module can change the shape of the vent during its movement. For example, when the air guide module moves to different positions or shapes, it forms different structures within the vent, altering the vent's shape and consequently affecting its air guiding effect. As a movable air guide module, its position and state are highly flexible, allowing it to assume different forms in different scenarios and improve the ventilation performance of the vent.

[0037] In this embodiment, the range hood includes a range hood module, a cooling module, and an air guide module. The range hood module has a ventilation opening, and the cooling module's heat dissipation vent is fluidly connected to the ventilation opening. The air guide module is located at the ventilation opening. The range hood module is used to absorb and exhaust cooking fumes from the target area, while the cooling module is used to cool the target area, which is the range hood's operating area. The air guide module is movable and changes the shape of the ventilation opening during movement. Thus, the heat generated by the cooling module can reach the range hood module through the heat dissipation vent and the ventilation opening, and then be exhausted through the range hood module, thereby reducing the temperature of the cooling module. Furthermore, by setting a movable air guide module at the ventilation opening, the shape of the ventilation opening can be adjusted in different usage scenarios. This facilitates better heat dissipation from the cooling module to be discharged through the range hood module, and effectively reduces the occurrence of cooking fumes drawn into the range hood module flowing back into the cooling module, causing contamination and reduced performance. This provides high flexibility and improves the reliability of the range hood.

[0038] The structure of the air guide module is not unique; for example, in one embodiment, such as... Figure 2 As shown, the air guide module includes a drive component 34 and an air guide plate 33. The drive component 34 is connected to the air guide plate 33, and the air guide plate 33 is disposed at the ventilation opening. The drive component 34 is used to drive the air guide plate 33 to move.

[0039] The drive component 34 provides power for the movement of the air guide plate 33. The drive component 34 is connected to the air guide plate 33, and when it moves, it drives the air guide plate 33 to move, thus achieving the function of driving the air guide plate 33 to move. The type of drive component 34 is not unique; it only needs to be able to drive the air guide plate 33 to move. For example, the drive component 34 can be a motor. The motor is connected to the air guide plate 33, and when the motor moves, it drives the air guide plate 33 to move.

[0040] The air guide plate 33 moves under the drive of the drive assembly 34. The air guide plate 33 is disposed at the air vent, and its movement can change the shape of the air vent. The shape of the air guide plate 33 is not unique. For example, the air guide plate 33 can be a plate-like structure, such as a plate-like structure with a small thickness, which can change the shape of the air vent over a large area. Alternatively, the air guide plate 33 can also be a long strip structure, which allows for changing the size of the air vent by changing its length; the specific shape can be determined according to actual needs.

[0041] When the air guide plate 33 moves to different positions, it can make the vent have different shapes. For example, when the air guide plate 33 moves to different angles, it can make the path of the airflow passing through the vent form a corresponding angle to adapt to different scenario requirements. When the air guide angle moves to completely close the vent, the vent is closed and ventilation cannot be achieved.

[0042] In this embodiment, the air guiding module includes a driving component 34 and an air guiding plate 33. The driving component 34 is connected to the air guiding plate 33, and the air guiding plate 33 is disposed at the ventilation opening. The driving component 34 is used to drive the air guiding plate 33 to move so that the air guiding plate 33 moves at the ventilation opening, thereby changing the shape of the ventilation opening and enriching the air guiding state.

[0043] In one exemplary embodiment, such as Figure 3 As shown, the drive assembly includes a push rod motor 6, and the air guide plate includes a first air guide plate 331 and a second air guide plate 332. The push rod motor 6 is disposed on the first air guide plate 331 and connected to the second air guide plate 332. The drive assembly is used to drive the second air guide plate 332 to move on the first air guide plate 331 to adjust the length of the second air guide plate 332 extending out of the first air guide plate 331.

[0044] The push rod motor 6 is mounted on the first air guide plate 331. The first air guide plate 331 can fix the position of the push rod motor 6 relatively, thereby helping the push rod motor 6 to work normally.

[0045] The push rod motor 6 is connected to the second air guide plate 332 and is used to drive the second air guide plate 332 to move. After the push rod motor 6 is energized, the magnetic material in the stator generates a magnetic field, and the conductive material in the rotor generates an electromagnetic torque after being energized. Since the rotor speed is higher than the stator speed, the electromagnetic torque on the rotor transmits torque to the reducer. The reducer reduces the speed and increases the torque, and finally outputs mechanical energy through the push rod to drive the second air guide plate 332 to perform the push rod action.

[0046] When the push rod motor 6 pushes the second air guide plate 332 to perform a push rod action, the second air guide plate 332 moves on the first air guide plate 331. It can be understood that the first air guide plate 331 and the second air guide plate 332 are arranged in parallel. The movement of the second air guide plate 332 on the first air guide plate 331 allows adjustment of the length of the second air guide plate 332 extending beyond the first air guide plate 331 by changing the overlap length of the first air guide plate 331 and the second air guide plate 332. Let the length of the air guide plate be the sum of the lengths of the first air guide plate 331 and the second air guide plate 332 minus the overlap length of the first air guide plate 331 and the second air guide plate 332. Then, by driving the second air guide plate 332 to move on the first air guide plate 331, the push rod motor 6 can adjust the length of the second air guide plate 332 extending beyond the first air guide plate 331, thereby adjusting the total length of the air guide plate.

[0047] Taking a scenario where both the first air guide plate 331 and the second air guide plate 332 are horizontally positioned, the second air guide plate 332 can move to the left or right, resulting in different lengths of the second air guide plate 332 extending beyond the first air guide plate 331. It is understandable that, depending on the different length relationships between the first air guide plate 331 and the second air guide plate 332, there may be a situation where the second air guide plate 332 does not extend beyond the first air guide plate 331. In this case, the length of the air guide plate can be considered to be the shortest.

[0048] In this embodiment, the driving component includes a push rod motor 6, and the air guide plate includes a first air guide plate 331 and a second air guide plate 332. The push rod motor 6 is disposed on the first air guide plate 331 and connected to the second air guide plate 332. The driving component is used to drive the second air guide plate 332 to move on the first air guide plate 331 to adjust the length of the second air guide plate 332 extending out of the first air guide plate 331, thereby changing the size of the ventilation opening and adjusting the flow rate and speed of the airflow through the ventilation opening.

[0049] Furthermore, in one embodiment, such as Figure 3 As shown, the drive assembly also includes a rotary motor 5, which is connected to the first air guide plate 331 and is used to drive the first air guide plate 331 to rotate.

[0050] The rotary motor 5 is connected to the first air guide plate 331. When the rotary motor 5 is energized, the current generates a magnetic field, which interacts with the conductor to produce a force, thereby causing the rotary motor 5 to rotate. The rotary motor 5 drives the first air guide plate 331 to rotate when it rotates. The first air guide plate 331 can rotate to different angles, thereby changing the path of the airflow through the vent.

[0051] It is understandable that when the rotary motor 5 drives the first air guide plate 331 to rotate, it can simultaneously cause the second air guide plate 332 set on the first air guide plate 331 to rotate, thereby changing the angle of the overall structure formed by the first air guide plate 331 and the second air guide plate 332.

[0052] In this embodiment, the driving assembly further includes a rotary motor 5, which is connected to the first air guide plate 331. The rotary motor 5 drives the first air guide plate 331 to rotate. Thus, the rotary motor 5 can control the angle of the first air guide plate 331, and simultaneously control the angle of the overall structure formed by the first air guide plate 331 and the second air guide plate 332, so as to adjust the air guiding angle of the air guide plate and the shape of the ventilation opening.

[0053] Furthermore, the structure of the rotary motor 5 is not unique. In one exemplary embodiment, such as... Figure 3As shown, the rotary motor 5 includes a motor body, a rotating shaft 51, and a motor wire 52. The motor wire 52 is connected to the motor body, the rotating shaft 51 is located at the center of the motor body, and the rotating shaft 51 is connected to the first air guide plate 331.

[0054] The motor wire 52 connects to the motor body and is used to connect external current to the motor body. When the motor body is energized, it generates a magnetic field, causing the rotating shaft 51 to rotate. The rotating shaft 51 is connected to the first air guide plate 331. When the rotating shaft 51 rotates, it drives the first air guide plate 331 to rotate, and simultaneously drives the second air guide plate 332 mounted on the first air guide plate 331 and the push rod motor 6 to rotate, thereby changing the angle between the first air guide plate 331 and the second air guide plate 332, and thus changing the shape of the ventilation opening. It is understood that in other embodiments, the rotating motor 5 may also include other structures, which are not limited here.

[0055] In this embodiment, the rotary motor 5 includes a motor body, a rotating shaft 51, and a motor wire 52. The motor wire 52 is connected to the motor body, and the rotating shaft 51 is located at the center of the motor body. The rotating shaft 51 is connected to the first air guide plate 331. After current is applied through the motor wire 52, the rotating shaft 51 can rotate, thereby driving the first air guide plate 331 to rotate, and driving the second air guide plate 332 and the push rod motor 6, which are mounted on the first air guide plate 331, to rotate synchronously, so as to change the angle of the first air guide plate 331 and the second air guide plate 332, thereby changing the shape of the ventilation opening.

[0056] In an exemplary embodiment, the range hood may further include a controller connected to the air guide module for controlling the movement of the air guide module.

[0057] The controller can act as a central control device to control the movement of the air guide module, so that the air guide module is in a specific position and the ventilation state of the vent meets the requirements.

[0058] For example, the controller can control the operating state of the air guide module based on the received signals. For instance, when the controller receives a signal indicating that the cooling mode of the range hood is not activated, it can control the air guide module to move to a state where the vent can be closed. When the cooling mode of the range hood is not activated, the cooling module will not work and will not generate heat. Therefore, there is no need to introduce the generated heat into the range hood module. Controlling the air guide module to move to a state where the vent can be closed also prevents the fumes drawn into the range hood module from entering the cooling module and affecting its performance. It is understood that in other embodiments, the controller's functions may also include other features, which can be adapted according to actual needs and will not be elaborated here.

[0059] Furthermore, the structure of the cooling module is not unique; in one exemplary embodiment, such as... Figure 4 As shown, the refrigeration module includes a compressor 2, a heat dissipation module 3, and an indoor unit module 4. The compressor 2, the heat dissipation module 3, and the indoor unit module 4 are connected together, and the heat dissipation port of the heat dissipation module 3 serves as the heat dissipation port of the refrigeration module.

[0060] Compressor 2, heat dissipation module 3, and indoor unit module 4 are interconnected to form a refrigeration cycle loop. The refrigeration cycle takes place within this loop, including compression in compressor 2, condensation in heat dissipation module 3, expansion in connecting pipes, and evaporation in indoor unit module 4. Utilizing a limited amount of refrigerant in a closed refrigeration system, the refrigerant undergoes repeated compression, condensation, expansion, and evaporation, continuously absorbing heat and vaporizing at indoor unit module 4, thus achieving cooling. The condensation process in heat dissipation module 3 generates heat, which can be dissipated through its heat dissipation vents. These vents, which also serve as heat dissipation vents for the refrigeration module, are fluidly connected to the ventilation openings. Therefore, the heat generated during condensation can reach the range hood module through the heat dissipation vents and ventilation openings, and is then discharged through the range hood module.

[0061] In this embodiment, the refrigeration module includes a compressor 2, a heat dissipation module 3, and an indoor unit module 4, which has a good refrigeration effect and a significant cooling effect.

[0062] Furthermore, the structure of the heat dissipation module 3 is not unique. In one exemplary embodiment, such as... Figure 4 As shown, the heat dissipation module 3 includes a condenser 32 and a heat dissipation fan 31. The condenser 32, the compressor 2 and the indoor unit module 4 are connected and arranged in a manner. The heat dissipation fan 31 is used to dissipate the heat emitted by the condenser 32.

[0063] The condenser 32, compressor 2, and indoor unit module 4 are interconnected to form a refrigeration cycle loop. The refrigeration cycle takes place within this loop, including the compression process in compressor 2, the condensation process in condenser 32, and the evaporation process in indoor unit module 4. Inside condenser 32, high-temperature, high-pressure gaseous refrigerant exchanges heat with the outside air through narrow pipes and heat sinks. During this heat exchange, the heat emitted by condenser 32 is dissipated to the external environment by cooling fan 31. Subsequently, the heat from the external environment reaches the range hood module through heat dissipation vents and ventilation openings, and is then discharged through the range hood module.

[0064] As heat dissipates, the gaseous refrigerant gradually cools and transforms into a liquid. Although the pressure decreases, it remains at a relatively high level. The liquid refrigerant then enters the expansion valve, reducing its pressure and temperature, and then continues into indoor unit module 4, beginning a new refrigeration cycle.

[0065] In this embodiment, the heat dissipation module 3 includes a condenser 32 and a cooling fan 31. The condenser 32, compressor 2, and indoor unit module 4 are interconnected. The cooling fan 31 is used to dissipate the heat emitted by the condenser 32. The condenser 32, compressor 2, and indoor unit module 4 form a refrigeration cycle loop for cooling. The cooling fan 31 dissipates the heat emitted by the condenser 32, releasing it into the external environment. The heat from the external environment then reaches the range hood module through the heat dissipation vents and ventilation openings, and is discharged through the range hood module, thus improving the heat exchange efficiency of the condenser 32.

[0066] In one exemplary embodiment, such as Figure 4 As shown, the indoor unit module 4 includes an evaporator 42, which is connected to the condenser 32.

[0067] The compressor 2, condenser 32, and evaporator 42 are connected to form a refrigeration cycle. During the evaporation process in evaporator 42, the refrigerant absorbs heat and vaporizes at evaporator 42, thus achieving the effect of cooling.

[0068] Evaporator 42 includes a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation to the liquid, causing the liquid to boil and vaporize. The evaporation chamber completely separates the gas and liquid phases. The vapor is discharged from evaporator 42, and the concentrated liquid is discharged from the corresponding outlet, thus completing the evaporation process.

[0069] In this embodiment, the indoor unit module 4 includes an evaporator 42, which is connected to the condenser 32 and can form a refrigeration cycle loop with the condenser 32 and the compressor 2 to achieve refrigeration. The evaporator 42 is energy-efficient, has a wide range of applications, and is flexible in operation.

[0070] The structure of the range hood module is not unique; for example, in one embodiment, such as... Figure 4 As shown, the fume hood module includes a centrifugal fan 11 and a housing 111. The centrifugal fan 11 is disposed inside the housing 111. When the centrifugal fan 11 rotates, it generates negative pressure to absorb oil fumes. The housing 111 protects the centrifugal fan 11 and confines the absorbed oil fumes within a certain range, reducing their impact on other components. A ventilation opening is provided inside the housing 111, which is fluidly connected to the heat dissipation port of the refrigeration module. This allows the heat generated by the refrigeration module to reach the fume hood module through the heat dissipation port and the ventilation opening, and then be discharged through the fume hood module. It is understood that in other embodiments, the fume hood module may also include other components, such as filter components, etc., which are not limited here.

[0071] Extendedly, the structure of the centrifugal fan 11 is not unique; for example, it may include a volute, an impeller 112, and a volute tongue 113, with the volute tongue 113 mounted on the housing 111 and close to the vent. It is understood that in other embodiments, the structure of the centrifugal fan 11 may also be different, and this is not limited thereto.

[0072] In this embodiment, the fume extraction module includes a centrifugal fan 11 and a housing 111. The centrifugal fan 11 is disposed inside the housing 111, and the housing 111 has ventilation openings. The centrifugal fan 11 can absorb oil fumes, and the housing 111 can protect the centrifugal fan 11 and limit the absorbed oil fumes to a certain range, reducing the impact on other components. In addition, the ventilation openings inside the housing 111 are fluidly connected to the heat dissipation vents of the refrigeration module, allowing the heat generated by the refrigeration module to reach the fume extraction module through the heat dissipation vents and ventilation openings, and then be discharged through the fume extraction module, which helps to ensure the working performance of the refrigeration module.

[0073] To better understand the above embodiments, a detailed explanation is provided below with reference to a specific embodiment. In one embodiment, as follows... Figure 1-4 As shown, the range hood includes a range hood module 1, a cooling module, and an air guide module. The air guide module includes a drive assembly and air guide plates. The drive assembly includes a push rod motor 6 and a rotary motor 5. The air guide plates include a first air guide plate 331 and a second air guide plate 332. The first air guide plate is a rotating air guide plate, and the second air guide plate 332 is an ejector air guide plate. The rotary motor 5 includes a motor body, a rotating shaft 51, and motor wires 52.

[0074] The refrigeration module includes a compressor 2, a heat dissipation module 3, and an indoor unit module 4. The indoor unit module 4 includes an evaporator 42 and an indoor unit fan 41. The range hood module 1 includes a centrifugal fan 11, an upper casing 12, an air inlet 13, and a casing 111. The centrifugal fan 11 is installed inside the upper casing 12, and the air inlet 13 is installed at the bottom of the upper casing 12, with an oil fume inlet connected to the air inlet of the centrifugal fan 11. The centrifugal fan 11 includes an impeller 112 and a volute 113, which is installed on the outer casing ring wall 115 near the fan outlet. The compressor 2 is installed above the air inlet 13 and located on the right side of the upper casing 12, and the indoor unit module 4 is located above the compressor 2. The heat dissipation module 3 is located at the top of the upper casing 12, and the heat dissipation module 3 and the indoor unit module 4 are arranged adjacent to each other, sharing an air inlet.

[0075] The compressor 2, condenser 32, and evaporator 42 constitute the air conditioning assembly, and their specific working principle is the same as that of an air conditioner, so it will not be described in detail here. An indoor unit air outlet 43 is opened at the top of the air inlet 13. The air outlet of the indoor unit fan 41 is fluidly connected to the indoor unit air outlet 43 through an air guide channel. When working in cooling mode, cold air is blown out from the indoor unit air outlet 43 to improve the user's cooking experience.

[0076] In this embodiment, the cooling fan 31 is a centrifugal fan, and the impeller central axis of the cooling fan 31 is parallel to the impeller central axis of the centrifugal fan 11. A vent 114 is provided on the volute annular wall 115 of the centrifugal fan 11. The cooling fan 31 is positioned above the centrifugal fan 11, with its outlet facing downwards and towards the vent 114. The outlet of the cooling fan 31 and the vent 114 are in fluid communication. A movable air guide module 33 is provided in the vent 114. By rotating to a suitable angle and blocking the vent 114 by a suitable length, the air guide module 33 allows the hot air blown out by the cooling fan 31 to overcome the air pressure inside the centrifugal fan 11 and smoothly enter the housing 111, while also preventing air from overflowing from the housing 111 through the vent 114.

[0077] like Figure 3 As shown, the air guide plate 33 includes an air guide rotating plate and an air guide extending plate. The air guide rotating plate is connected to the rotating shaft 51 of the rotary motor 5. One end of the air guide rotating plate has an elliptical groove, which is fixedly connected to the rotating shaft 51 of the rotary motor 5. After receiving a rotation command, the rotary motor 5 rotates its shaft 51, thereby driving the air guide rotating plate to rotate. The optimal rotation angle determined for each gear position is input to the controller to control the rotary motor 5 to rotate by the corresponding angle at different gear positions. When the rotary motor wire 52 is energized, the air guide plate 331 can rotate. The push rod motor 6 is fixed on the air guide rotating plate, and the air guide extending plate is connected to the push rod motor 6. The push rod motor 6 can control the extension length of the air guide extending plate, thereby controlling the length of the air guide plate 33. The length of the air guide plate 33 is the sum of the lengths of the air guide rotating plate and the air guide extending plate minus the overlap length of the air guide rotating plate and the air guide extending plate.

[0078] This embodiment features a rotatable and retractable air guide plate at the ventilation opening, which allows for adjustment of the air guide plate's position, resulting in smoother airflow and preventing oil fumes from flowing back into the heat dissipation chamber.

[0079] Furthermore, the working process of the range hood in this application embodiment includes the following steps:

[0080] S1. The range hood is powered on;

[0081] S2. Determine if the range hood is in cooling mode;

[0082] If not, proceed to step S3;

[0083] If so, proceed to step S4;

[0084] S3. Control the air guide plate to close the ventilation opening; the range hood module is only used to absorb and exhaust oil fumes.

[0085] S4. Detect the speed of the centrifugal fan of the range hood module; then find the optimal fixed position of the air guide plate at the speed of the centrifugal fan so that the hot air blown out by the cooling fan does not backflow and the exhaust is smooth.

[0086] The specific process of finding the optimal fixed position of the air guide plate at the centrifugal fan speed to ensure that the hot air blown out by the cooling fan does not backflow and that the exhaust is smooth includes:

[0087] S40. After the air guide plate retracts to the preset length (opening the vent), the air guide plate begins to rotate within a certain range, while the fan speed at different angles is recorded. The preset length is obtained through pre-shipment testing. Since the air guide plate has a relatively large retractable length range, the air guide plate length range corresponding to the minimum fan speed is reduced beforehand through testing. The median value within this reduced air guide plate length range is used as the preset length, allowing users to quickly determine the optimal length. When determining the rotation angle, the median value of the tested length range is first used as the preset length. Once the optimal rotation angle is determined, it remains unchanged when determining the optimal length subsequently.

[0088] S41. Detect the angle value corresponding to the minimum speed of the cooling fan within this angle range;

[0089] S42. Control the air guide plate 33 to rotate to this angle and then stop rotating;

[0090] S43. Control the extension and retraction of the air guide plate within a certain length range, and record the rotational speed of the cooling fan at different lengths;

[0091] S44. Detect the length value corresponding to the minimum speed of the cooling fan within this length range;

[0092] S45. Control the air guide plate to extend to this length and then stop extending and retracting;

[0093] The fixed position of the air guide plate determined by steps S40-S45 is the optimal exhaust position.

[0094] In the above embodiment, by providing a movable air guide module at the vent 114, the air guide plate can extend to close the vent when the range hood is in smoke extraction mode only. In cooling mode, the heat from the condenser needs to be drawn into the fan cavity through the vent and then dissipated. Therefore, in cooling mode, the air guide plate retracts to a preset length and then begins to rotate within its working range, where the preset length ranges from 0.4L to 0.6L. Taking the angle at which the air guide plate closes the vent as 0°, the rotation angle range of the air guide plate is ±45°. Simultaneously, the rotational speed of the cooling fan is recorded at different angles. Within this rotational angle range, the air guide plate is rotated to the angle corresponding to the minimum detected cooling fan speed and then stops rotating. At this angle, the air guide plate begins to extend and retract within its working range. The rotational speed of the cooling fan is recorded at different lengths. Taking the total length of the air guide plate closing the vent as L, the extension and retraction length range of the air guide plate is 0.3L. Based on the length value corresponding to the minimum detected cooling fan speed, the air guide plate is fixed at this length and then stops extending and retracting. The optimal exhaust position for the cooling fan is when the air guide plate is fixed at this angle and extended to this length.

[0095] If the rotational speed of the cooling fan were measured and recorded individually at different angles and lengths of the air guide plate, the large amount of data collected would result in a long operating time. The reason for adopting the above control process is that, after analysis, the inlet angle of the cooling fan into the centrifugal fan is a significant influencing factor. There is an angle 'a' between the airflow from the cooling fan and the airflow inside the flue gas duct. Theoretically, the airflows should be in the same direction, and the smaller the angle 'a', the less impact there is on the airflow from the cooling fan and the airflow inside the fan, resulting in less resistance to exhaust. Therefore, the angle of the air guide plate directly affects the smoothness of the cooling fan's exhaust and is a major factor influencing exhaust performance. The length of the air guide plate affects both the exhaust direction and the airflow volume of the cooling fan. A smaller air guide plate results in a poorer airflow guidance effect but a larger airflow volume; a longer air guide plate results in a better airflow guidance effect but a smaller airflow volume. Therefore, it is necessary to find a suitable length that minimizes exhaust resistance and the required cooling fan speed.

[0096] To address the technical problem of oil fumes backflowing into the condenser's heat dissipation cavity during hot air exhaust, this application employs a retractable and rotatable air guide plate. In oil fume extraction mode only, the air guide plate extends to cover the vents. In cooling mode, the air guide plate first rotates within its working range, recording the fan speed at different angles. The angle with the lowest speed is the optimal angle, and the optimal exhaust position is when the air guide plate is fixed at the optimal angle. Subsequently, the air guide plate retracts within its working range, while simultaneously recording the fan speed at different lengths. The length with the lowest speed is the optimal length, and the optimal exhaust position is when the air guide plate is fixed at the optimal length. When the air guide plate is fixed at the optimal angle and length, the hot air from the condenser is drawn into the range hood module through the vents and then exhausted. This ensures that the pressure of the hot air blown out of the condenser's heat dissipation cavity is greater than the air pressure inside the range hood's fan cavity, thus preventing oil fumes from backflowing into the condenser's hot air cavity and contaminating the condenser. Meanwhile, this solution can adjust the fixed position of the air guide plate to the optimal exhaust position in real time according to the usage environment during the driving process, making it more flexible to deal with actual usage conditions and ensuring that there is no backflow of oil fumes during each use. It is more user-friendly and intelligent, improves the overall efficiency of the machine, and extends the service life of the machine.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A range hood, characterized in that, It includes a controller, a range hood module, a refrigeration module, and an air guide module. The range hood module has a ventilation opening, the heat dissipation port of the refrigeration module is fluidly connected to the ventilation opening, and the air guide module is disposed at the ventilation opening. The range hood module is used to absorb and exhaust cooking fumes from the target area; the cooling module is used to cool the target area, which is the effective area of ​​the range hood. The air guide module is a movable air guide module, and the controller is connected to the air guide module. The controller is used to control the movement of the air guide module; the air guide module is used to change the shape of the vent when it moves.

2. The range hood according to claim 1, characterized in that, The air guiding module includes a driving component and an air guiding plate. The driving component is connected to the air guiding plate, and the air guiding plate is disposed at the ventilation opening. The driving component is used to drive the air guiding plate to move.

3. The range hood according to claim 2, characterized in that, The drive assembly includes a push rod motor, and the air guide plate includes a first air guide plate and a second air guide plate. The push rod motor is disposed on the first air guide plate and connected to the second air guide plate. The driving component is used to drive the second air guide plate to move on the first air guide plate, so as to adjust the length of the second air guide plate extending out of the first air guide plate.

4. The range hood according to claim 3, characterized in that, The drive assembly also includes a rotary motor connected to the first air guide plate; The rotary motor is used to drive the first air guide plate to rotate.

5. The range hood according to claim 4, characterized in that, The rotary motor includes a motor body, a rotating shaft, and motor wires. The motor wires are connected to the motor body, and the rotating shaft is located at the center of the motor body. The rotating shaft is connected to the first air guide plate.

6. The range hood according to claim 1, characterized in that, The refrigeration module includes a compressor, a heat dissipation module, and an indoor unit module. The compressor, the heat dissipation module, and the indoor unit module are connected together, and the heat dissipation port of the heat dissipation module serves as the heat dissipation port of the refrigeration module.

7. The range hood according to claim 6, characterized in that, The heat dissipation module includes a condenser and a cooling fan. The condenser, the compressor, and the indoor unit module are connected together. The cooling fan is used to dissipate the heat emitted by the condenser.

8. The range hood according to claim 7, characterized in that, The indoor unit module includes an evaporator, which is connected to the condenser.

9. The range hood according to claim 1, characterized in that, The smoke hood module includes a centrifugal fan and a housing. The centrifugal fan is disposed inside the housing, and the housing has ventilation openings.

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