Range hood

Abstract

The invention relates to a range hood, and relates to the technical field of dehumidification. The range hood comprises a shell, an air conditioner assembly and a fan, a smoke exhaust channel and a cold air channel are arranged in the shell, and the smoke exhaust channel and the cold air channel can be communicated or blocked under the control of a valve; the air conditioner assembly is installed in the shell and can dehumidify circulating gas in the cold air channel. The draught fan is installed on the smoke exhaust channel and can suck oil smoke. The range hood has a first operation mode, a smoke exhaust port communicated with the smoke exhaust channel and a ventilation opening communicated with the cold air channel are formed in the outer side of the shell, when the range hood is in the first operation mode, the smoke exhaust channel is communicated with the cold air channel, the draught fan sucks air through the ventilation opening, and when the range hood is in the second operation mode, the smoke exhaust channel is communicated with the cold air channel. And the air is dehumidified by the air conditioning assembly and then is exhausted through the smoke exhaust channel and the smoke exhaust port in sequence. According to the range hood, indoor dehumidification can be carried out while oil smoke is sucked.

Description

Technical Field

[0001] The present application relates to the technical field of dehumidification, and in particular to a range hood. Background Art

[0002] In the related art, a refrigeration component is added to the range hood, which can realize all the functions of the range hood and the refrigeration function of the air conditioner at the same time. However, most refrigeration range hoods only have the refrigeration function, and rarely have a separate dehumidification function. In seasons with high humidity and low temperature, users can only turn on the refrigeration function to dehumidify and blow out cold air, which is a poor user experience. Summary of the invention

[0003] Based on this, it is necessary to provide a range hood to address the problem that the range hood cannot dehumidify alone.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a range hood, comprising:

[0006] A shell, in which a smoke exhaust passage and a cold air passage are arranged; the smoke exhaust passage and the cold air passage can be controllably connected or blocked;

[0007] an air conditioning assembly mounted in the housing; and

[0008] A fan installed in the smoke exhaust passage;

[0009] Among them, a smoke exhaust port connected to the smoke exhaust channel and a ventilation port connected to the cold air channel are opened on the outside of the shell; when the range hood is in the first operating mode, the smoke exhaust channel and the cold air channel are connected, the fan inhales air through the ventilation port, and the air is dehumidified by the air-conditioning component and then discharged through the smoke exhaust channel and the smoke exhaust port in sequence.

[0010] Through the above design, the smoke extraction and dehumidification functions of the range hood are realized, meeting the dehumidification needs of the range hood in an environment with high humidity and low temperature.

[0011] In one of the embodiments, the range hood further includes a purification component, which is installed in the shell and is provided with an air inlet, the air inlet is connected to the smoke exhaust channel, and the purification component is used to absorb oil smoke particles in the airflow.

[0012] Through the above design, the particles in the oil smoke are adsorbed and purified, which prevents the air flow from flowing into the air-conditioning component, thereby increasing the service life of the air-conditioning component.

[0013] In one embodiment, a first air valve is provided at the connection between the air inlet and the smoke exhaust channel, and a second air valve is provided at one end of the smoke exhaust channel close to the air conditioning component. The first air valve is used to control the connection or blocking between the purification component and the smoke exhaust channel, and the second air valve is used to control the connection or blocking between the cold air channel and the smoke exhaust channel.

[0014] Through the above design, the upstream of the smoke exhaust passage is closed without operating the air conditioning component, thereby blocking the cold air passage and the smoke exhaust passage.

[0015] In one embodiment, the range hood has a second operating mode. When the range hood is in the second operating mode:

[0016] The first air valve blocks the purification component and the smoke exhaust channel, the second air valve blocks the cold air channel and the smoke exhaust channel, and the fan draws oil smoke and discharges it through the smoke exhaust channel and the smoke exhaust port in sequence.

[0017] Through the above design, in the second operation mode, the oil smoke sucked by the fan can only be discharged through the smoke exhaust channel and the smoke exhaust port, thereby satisfying the single smoke extraction function of the range hood.

[0018] In one embodiment, the air conditioning component includes an evaporator and a condenser, the evaporator is located on the side of the shell where the vent is provided, the condenser is located at the connection between the cold air channel and the smoke exhaust channel, and the purification component is provided with an air outlet on the side close to the evaporator and the condenser, and the air outlet is used to transport the airflow filtered by the purification component to the evaporator and the condenser.

[0019] Through the above design, the moisture in the air flow can condense on the surface of the evaporator, thereby realizing the dehumidification and refrigeration functions of the range hood.

[0020] In one embodiment, the range hood has a third operating mode. When the range hood is in the third operating mode:

[0021] The first air valve connects the purification component with the smoke exhaust passage, the second air valve connects the cold air passage with the smoke exhaust passage, a part of the oil smoke sucked by the fan is discharged through the smoke exhaust passage and the smoke exhaust port in sequence, another part of the oil smoke enters the purification component through the air inlet for filtration to form purified air, a part of the purified air is transported to the evaporator through the air outlet, is cooled by the evaporator to form cold air and is discharged from the vent, and another part of the purified air is transported to the condenser through the air outlet, is discharged from the smoke exhaust passage after heat exchange by the condenser.

[0022] Through the above design, when the airflow contacts the components of the air conditioning assembly, no oil smoke particles adhere to the surface of the evaporator and the condenser, thereby improving the service life of the air conditioning assembly while satisfying the cooling effect of the fume extractor.

[0023] In one of the embodiments, the range hood further includes a first flow guide member, which is disposed at a connection between the smoke exhaust passage and the air inlet to control an air flow ratio between the smoke exhaust passage and the air inlet.

[0024] Through the above design, the opening angle of the first air guide is adjusted, the purification pressure of the purification component or the cooling pressure of the evaporator is appropriately reduced, and the output rate of the cold air is controlled.

[0025] In one of the embodiments, the range hood further includes a second air guide member, which is disposed at the air outlet to control the air flow ratio of the evaporator and the condenser.

[0026] Through the above design, the air flow rates of the air outlets respectively flowing to the evaporator and the condenser are adjusted, and the supply rate of cold air is further adjusted.

[0027] In one of the embodiments, the range hood further comprises a water receiving box, and the water receiving box is arranged below the evaporator in the gravity direction to receive condensed water on the surface of the evaporator.

[0028] Through the above design, the airflow is cooled and condensed into water droplets on the surface of the evaporator, which prevents the condensed water from flowing into the internal circuit system of the range hood and causing related circuit failures.

[0029] In one of the embodiments, a heating element is provided in the water receiving box and is connected to a pipeline of the purification device, so that the condensed water in the water receiving box is heated by the heating element, and the purification device is cleaned by the heated condensed water.

[0030] Through the above design, the purification component is kept clean, and the working efficiency and service life of the purification component are increased.

[0031] In one of the embodiments, the water receiving box is located at the downwind port of the condenser so that the condensed water in the water receiving box is heated by the heat of the condenser.

[0032] Through the above design, hot air is formed by the heat of the condenser to heat the condensed water in the water receiving box, thereby reducing energy loss.

[0033] In one of the embodiments, the range hood further comprises a water tank, which is connected to the water receiving box pipeline and is detachably installed in the shell.

[0034] Through the above design, the excess condensed water inside the range hood is collected and cleaned regularly.

[0035] Compared with the related art, the beneficial effects of the present application are as follows: the present application provides a range hood, comprising a shell, an air conditioning assembly and a fan. A smoke exhaust passage and a cold air passage are provided in the shell, and the smoke exhaust passage and the cold air passage are connected or blocked under the control of a valve. The air conditioning assembly is installed in the shell, and dehumidifies the circulating gas in the cold air passage. The fan is installed in the smoke exhaust passage and can extract oil smoke. In this way, during the operation, by connecting the smoke exhaust passage and the cold air passage, the fan located in the smoke exhaust passage performs a suction operation, and the indoor air is sucked into the cold air passage through the vent and dehumidified by the air conditioning assembly, and then discharged through the smoke exhaust passage together with the oil smoke, thereby satisfying the purpose of extracting oil smoke while dehumidifying the indoor air. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of the first operation mode of the range hood in some embodiments of the present application;

[0038] Figure 2 This is a schematic diagram of the structure of the air conditioning assembly in some embodiments of the present application;

[0039] Figure 3 This is a schematic diagram of the second operation mode structure of the range hood in some embodiments of the present application;

[0040] Figure 4 This is a schematic structural diagram of the third operation mode of the range hood in some embodiments of the present application;

[0041] Figure 5 This is a schematic diagram of the control logic structure of the range hood in some embodiments of the present application.

[0042] Description of reference numerals:

[0043] 100. Range hood; 110. Shell; 111. Smoke exhaust passage; 112. Cold air passage; 113. Smoke exhaust port; 114. Ventilation port; 120. Air conditioning component; 121. Evaporator; 122. Condenser; 123. Compressor; 124. Refrigerant pipeline; 130. Fan; 140. Purification component; 141. Air inlet; 142. Air outlet; 150. First air valve; 160. Second air valve; 170. First flow guide member; 180. Second flow guide member; 190. Water receiving box; 1100. Water tank. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 application.

[0046] In addition, if the term "and / or" appears, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0050] See also Figure 1 As shown, the embodiment of the present application provides a range hood 100, which can dehumidify the room while satisfying the purpose of extracting oil smoke. The range hood 100 includes a housing 110, an air conditioning assembly 120 and a fan 130, and the air conditioning assembly 120 and the fan 130 are both installed in the housing 110. The air conditioning assembly 120 is used for cooling and air dehumidification, and the fan 130 is used for extracting oil smoke.

[0051] Specifically, a smoke exhaust passage 111 and a cold air passage 112 are provided in the housing 110, and the smoke exhaust passage 111 and the cold air passage 112 can be connected or blocked under the control of a valve. It can be understood that the housing 110 is a sealed structure formed by splicing a plurality of metal plates, and the interior thereof can be defined by a pipeline arrangement or a plurality of partitions to form the smoke exhaust passage 111 and the cold air passage 112. The smoke exhaust passage 111 is used to exhaust the oil smoke sucked by the fan 130, and the cold air passage 112 is used to exhaust cold air or absorb indoor air that needs to be dehumidified.

[0052] Exemplarily, the fan 130 is installed in the exhaust passage 111, and it can be understood that the side of the fan 130 close to the stove is the oil suction port of the fan 130, and the fan 130 is located upstream of the exhaust passage 111 to exhaust the oil smoke to the exhaust passage 111 and then exhaust it. The outer side of the housing 110 is provided with an exhaust port 113 and a vent 114, wherein the exhaust port 113 is connected to the exhaust passage 111, and the vent 114 is connected to the cold air passage 112. The range hood 100 has a first operating mode, when the range hood 100 is in the first operating mode. Under the control of the valve, the exhaust passage 111 and the cold air passage 112 are in a connected state, and the fan 130 drives the fan blades through the motor to form suction to suck the oil smoke. At the same time, due to the connection between the exhaust passage 111 and the cold air passage 112, the suction force formed by the fan 130 sucks the indoor air into the cold air passage 112 through the vent 114. The indoor air is transported to the air conditioning assembly 120 through the cold air duct 112 and dehumidified by the air conditioning assembly 120, and then the dry air is discharged through the smoke exhaust duct 111, realizing the smoke extraction and dehumidification functions of the range hood 100, and meeting the dehumidification needs of the range hood 100 in an environment with high humidity and low temperature.

[0053] In some embodiments, the range hood 100 further includes a purification component 140 , which is installed in the housing 110 and is provided with an air inlet 141 , the air inlet 141 is connected to the smoke exhaust channel 111 , and the purification component 140 is used to absorb oil smoke particles in the airflow.

[0054] Specifically, through the air inlet 141 and the smoke exhaust channel 111, part of the oil smoke sucked by the fan 130 can flow into the purification component 140 through the air inlet 141, so that the particles in the oil smoke are adsorbed and purified by the purification component 140, avoiding the airflow from flowing into the air-conditioning component 120, causing the oil smoke particles to adhere to the air-conditioning component 120, thereby improving the service life of the air-conditioning component 120.

[0055] Furthermore, the purification component 140 includes a grid mesh structure, so that the oil smoke filtered by the grid mesh will adhere to the grid mesh and block the mesh holes.

[0056] Furthermore, the purification component 140 may also be provided with a heating device to melt the grease adhered to the grille mesh by means of hot melt oil through the heating device, so as to facilitate the cleaning of the purification component 140 .

[0057] Exemplarily, the heating device may be a heating wire. When oil smoke is attached to the grille, the heating device is used to heat the grille, so that the solid oil attached to the grille is melted into liquid and flows down from the grille. The liquid oil is discharged through the guide pipe, so that the purification device is cleaned regularly.

[0058] Continue reading Figure 4 As shown, further, the air conditioning component 120 includes an evaporator 121 and a condenser 122. The evaporator 121 is located on the side of the housing 110 where the vent 114 is provided, and the condenser 122 is located at the connection between the cold air channel 112 and the smoke exhaust channel 111. The purification component 140 is provided with an air outlet 142 on one side close to the evaporator 121 and the condenser 122. The air outlet 142 is used to transport the airflow filtered by the purification component 140 to the evaporator 121 and the condenser 122.

[0059] It should be noted that the evaporator 121 can evaporate the refrigerant flowing through it in a low-pressure and low-temperature environment, thereby absorbing heat from the surrounding environment. Therefore, during the dehumidification or refrigeration process, the airflow passing through the evaporator 121 is cooled, and the water vapor in the airflow condenses and adheres to the surface of the evaporator 121, thereby achieving dehumidification of the airflow. The structure of the evaporator 121 may include pipes, fins and other parts, and these parts work together to improve the heat exchange efficiency.

[0060] The condenser 122 can cool the gaseous refrigerant refluxed from the evaporator 121 and turn it into liquid again, and then transport it to the evaporator 121 again to realize the recycling of the refrigerant. The condenser 122 may include structures such as a radiator and a pipeline to improve the condensation efficiency.

[0061] Furthermore, the air conditioning assembly 120 further includes a compressor 123 and a refrigerant pipeline 124. The compressor 123 is used to pressurize the refrigerant. The compressor 123, the evaporator 121 and the condenser 122 are all connected through the refrigerant pipeline 124 to realize the circulation of the refrigerant.

[0062] In some embodiments, a first air valve 150 is provided at the connection between the air inlet 141 and the smoke exhaust channel 111, and a second air valve 160 is provided at one end of the smoke exhaust channel 111 close to the air conditioning component 120. The first air valve 150 is used to control the connection or blockage between the purification component 140 and the smoke exhaust channel 111, and the second air valve 160 is used to control the connection or blockage between the cold air channel 112 and the smoke exhaust channel 111.

[0063] Specifically, the first air valve 150 is a three-way valve structure to control the communication state between the air inlet 141, the upstream of the smoke exhaust channel 111, and the downstream of the smoke exhaust channel 111. The second air valve 160 is arranged on the side of the fan 130 close to the air conditioning component 120 to close the upstream of the smoke exhaust channel 111 and block the cold air channel 112 and the smoke exhaust channel 111 when the air conditioning component 120 does not need to be operated.

[0064] It can be understood that the “upstream” in the embodiment of the present application refers to the suction end direction of the airflow during the operation of the range hood 100. The “downstream” in the embodiment of the present application refers to the discharge end direction of the airflow during the operation of the range hood 100.

[0065] Continue reading Figure 3 As shown, in some embodiments, the range hood 100 has a second operation mode. When the range hood 100 is in the second operation mode, the first air valve 150 blocks the purification component 140 and the smoke exhaust passage 111, the second air valve 160 blocks the cold air passage 112 and the smoke exhaust passage 111, and the fan 130 draws the oil smoke and discharges it through the smoke exhaust passage 111 and the smoke exhaust port 113 in sequence.

[0066] Specifically, the second operation mode is that the range hood 100 performs only the oil fume extraction operation, and at this time, the ventilation port 114 is closed to prevent the oil fume from entering the cold air passage 112. By closing the first air valve 150 and the second air valve 160, the exhaust passage 111 is isolated from the purification device and the cold air passage 112, so that the oil fume sucked by the fan 130 can only be discharged through the exhaust passage 111 and the exhaust port 113, thereby satisfying the single extraction function of the range hood 100.

[0067] Continue reading Figure 4 As shown, in some embodiments, the range hood 100 has a third operation mode. When the range hood 100 is in the third operation mode, the first air valve 150 connects the purification component 140 with the smoke exhaust channel 111, the second air valve 160 connects the cold air channel 112 with the smoke exhaust channel 111, and the fan 130 sucks the oil smoke. A part of the oil smoke is discharged through the smoke exhaust channel 111 and the smoke exhaust port 113 in sequence, and another part of the oil smoke enters the purification component 140 through the air inlet 141 and is filtered to form purified air. A part of the purified air is transported to the evaporator 121 through the air outlet 142, and is discharged from the vent 114 after being cooled by the evaporator 121 to form cold air, and another part of the purified air is transported to the condenser 122 through the air outlet 142, and is discharged from the smoke exhaust channel 111 after heat exchange in the condenser 122.

[0068] Specifically, the third operation mode is that the range hood 100 performs both oil fume extraction and cooling operations at the same time, so as to provide a comfortable cooking environment for the user under high temperature cooking conditions. During the operation, the first air valve 150 and the second air valve 160 are both in the open state, at which time the fan 130 draws oil fume into the exhaust passage 111. A portion of the oil fume is discharged through the exhaust port 113, while the other portion enters the purification component 140 through the air inlet 141, and the oil fume particles in the air flow are adsorbed by the purification component 140 to form purified air. Then the purified air is discharged to the evaporator 121 and the condenser 122 through the air outlet 142 at the same time, thereby reducing the cooling burden of the evaporator 121. The purified air in contact with the evaporator 121 is cooled by absorbing heat, and the water vapor in the air flow is attached to the surface of the evaporator 121, thereby delivering cold air to the room. The purified air in contact with the condenser 122 can exchange heat with the condenser 122, take away the high temperature of the condenser 122, and enter the smoke exhaust channel 111 under the suction of the fan 130 to be discharged, thereby cooling the condenser 122 and improving the service life of the condenser 122. Through the above operation mode, when the airflow contacts the various components of the air conditioning assembly 120, no oil smoke particles adhere to the surface of the evaporator 121 and the condenser 122, thereby improving the service life of the air conditioning assembly 120 while satisfying the cooling effect of the range hood 100.

[0069] Furthermore, the range hood 100 further includes a first air guide 170 , which is disposed at a connection between the smoke exhaust passage 111 and the air inlet 141 to control an air flow ratio between the smoke exhaust passage 111 and the air inlet 141 .

[0070] Specifically, the first guide 170 is an arc-shaped sheet structure, and its concave side is located on the side close to the air inlet 141, so that when the first guide 170 is in the open state, the oil smoke is guided into the air inlet 141. One end of the first guide 170 is rotatably installed at the connection between the smoke exhaust channel 111 and the air inlet 141, so that the air flow ratio of the oil smoke discharged through the smoke exhaust port 113 and flowing into the purification component 140 is achieved through the rotation of the first guide 170 in the smoke exhaust channel 111. It can be understood that when the first guide 170 moves in the direction close to the air inlet 141, the angle between the air inlet 141 and the first guide 170 decreases, thereby reducing the air flow rate flowing into the purification component 140 and increasing the air flow rate discharged from the smoke exhaust port 113. When the first guide 170 moves toward the direction of the original air inlet 141, the angle between the air inlet 141 and the first guide 170 increases, thereby increasing the airflow rate flowing into the purification component 140 and reducing the airflow rate discharged from the smoke exhaust port 113. In this way, the flow rate of oil smoke in the smoke exhaust channel 111 and the purification component 140 is adjusted by adjusting the position of the first guide 170, and the opening angle of the first guide 170 is reasonably adjusted according to demand, and the purification pressure of the purification component 140 or the cooling pressure of the evaporator 121 is appropriately reduced to control the output rate of the cold air.

[0071] Furthermore, the range hood 100 further includes a second air guide 180 , which is disposed at the air outlet 142 to control the air flow ratio of the evaporator 121 and the condenser 122 .

[0072] Specifically, one end of the second guide 180 is rotatably installed in the housing 110, and the other end points to the air outlet 142 of the purification component 140. The air outlet 142 is located between the evaporator 121 and the condenser 122, which are arranged vertically. Therefore, by rotating the second guide 180, the air flow rate of the air outlet 142 to the evaporator 121 and the condenser 122 is adjusted, and the supply rate of the cold air is further adjusted. At the same time, during the dehumidification operation of the first operation mode, the second guide 180 rotates in the direction close to the condenser 122, thereby increasing the suction rate of the indoor air and improving the dehumidification effect.

[0073] In some embodiments, the range hood 100 further includes a water receiving box 190 , which is disposed below the evaporator 121 in the direction of gravity to receive condensed water on the surface of the evaporator 121 .

[0074] Specifically, the water collecting box 190 is installed under the evaporator 121 to receive water droplets condensed on the surface of the evaporator 121 due to cooling of the airflow during refrigeration and dehumidification operations, thereby preventing condensed water from flowing into the internal circuit system of the range hood 100 and causing related circuit failures.

[0075] In one embodiment, a heating element is provided in the water receiving box 190 and is connected to a pipeline of the purification device so that the condensed water in the water receiving box 190 is heated by the heating element, and the purification device is cleaned by the heated condensed water.

[0076] For example, the heating element may be an electric heating wire, which can heat the condensed water collected in the water receiving box 190 when powered on. When the condensed water collected in the water receiving box 190 exceeds 90% of its capacity and the range hood 100 stops working, the heating wire will automatically heat the condensed water in the water receiving box 190 to 100°C, and pass the drainage pipe to the purification component 140 to spray and clean the grille, so as to keep the purification component 140 clean and increase the working efficiency and service life of the purification component 140.

[0077] In another embodiment, the water receiving box 190 is located at the downwind port of the condenser 122 so that the condensed water in the water receiving box 190 is heated by the heat of the condenser 122 .

[0078] Specifically, the water receiving box 190 can receive the condensed water attached to the surface of the evaporator 121 and is located at the downwind port of the condenser 122. Since the surface temperature of the condenser 122 is relatively high, the airflow can take away part of the heat of the condenser 122 and heat the condensed water in the water receiving box 190, and then transport the heated condensed water to the purification component 140 for cleaning.

[0079] In some embodiments, the range hood 100 further includes a water tank 1100 , which is connected to the water receiving box 190 through a pipeline and is detachably installed in the housing 110 .

[0080] Specifically, the water tank 1100 is placed on the bottom side of the housing 110 and connected to the water box 190 by a pipeline, so as to receive excess condensed water, and the water tank 1100 is removed regularly for cleaning. Exemplarily, during the cleaning process of the purification component 140, the waste liquid after cleaning can flow to the detachable water tank 1100 through the drainage pipe. And when the automatic cleaning function is turned off, when the condensed water collected in the water box 190 exceeds 90% of its capacity, the excess condensed water flows to the detachable water tank 1100 through the drainage pipe to achieve the water discharge inside the range hood 100 and ensure its normal use.

[0081] Continue reading Figure 5 As shown, the range hood 100 provided in the present application can select corresponding operating modes according to user needs to provide three operating states: oil fume extraction, oil fume extraction and dehumidification, and oil fume extraction and refrigeration, so as to meet the diverse needs of users and enhance user experience.

[0082] In the first operating mode, the first air valve 150 and the first guide member 170 are both in a closed state, the vent 114 and the second air valve 160 are both in an open state, the fan 130 can simultaneously suck oil smoke from the oil suction port and indoor air from the vent 114, and all the oil and smoke are discharged through the exhaust passage 111. The air flowing into the vent 114 is dehumidified by the evaporator 121, and then discharged through the condenser 122 and the exhaust passage 111 in sequence.

[0083] In the second operation mode, the first air valve 150 , the first air guide 170 , the vent 114 and the second air valve 160 are all in a closed state, and the fan 130 draws oil smoke from the oil suction port and exhausts it all through the exhaust passage 111 .

[0084] In the third operation mode, the first air valve 150, the first air guide 170, the vent 114 and the second air valve 160 are all in an open state, the fan 130 draws the oil smoke from the oil suction port into the exhaust passage 111, and under the guidance of the first air guide 170, part of the oil smoke enters the purification component 140, and is filtered by the purification component 140 to form clean air, and the clean air exchanges heat with the evaporator 121 to form cold air, and at this time the vent 114 is in an air outlet state, and the cold air is discharged through the vent 114. At the same time, part of the clean air flows through the condenser 122, takes away part of the heat of the condenser 122, and is discharged from the exhaust passage 111.

[0085] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0086] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A range hood, characterized in that: include: A shell body, in which a smoke exhaust passage and a cold air passage are arranged; The smoke exhaust passage and the cold air passage can be controllably connected or blocked; an air conditioning assembly mounted in the housing; and A fan installed in the smoke exhaust passage; Wherein, a smoke exhaust port connected to the smoke exhaust channel and a vent connected to the cold air channel are provided on the outer side of the shell; When the range hood is in the first operating mode, the smoke exhaust passage and the cold air passage are connected, the fan inhales air through the vent, and the air is dehumidified by the air conditioning component and then discharged through the smoke exhaust passage and the smoke exhaust port in sequence.

2. The range hood according to claim 1, characterized in that: The range hood further comprises a purification component, which is installed in the shell and is provided with an air inlet, the air inlet is communicated with the smoke exhaust channel, and the purification component is used for absorbing oil smoke particles in the airflow.

3. The range hood according to claim 2, characterized in that: A first air valve is provided at the connection between the air inlet and the smoke exhaust channel, and a second air valve is provided at one end of the smoke exhaust channel close to the air conditioning component. The first air valve is used to control the connection or blockage between the purification component and the smoke exhaust channel, and the second air valve is used to control the connection or blockage between the cold air channel and the smoke exhaust channel.

4. The range hood according to claim 3, characterized in that: The range hood has a second operating mode. When the range hood is in the second operating mode: The first air valve blocks the purification component and the smoke exhaust channel, the second air valve blocks the cold air channel and the smoke exhaust channel, and the fan draws oil smoke and discharges it through the smoke exhaust channel and the smoke exhaust port in sequence.

5. The range hood according to claim 3, characterized in that: The air conditioning component includes an evaporator and a condenser. The evaporator is located on a side of the shell where a vent is provided. The condenser is located at the connection between the cold air channel and the smoke exhaust channel. The purification component is provided with an air outlet on a side close to the evaporator and the condenser. The air outlet is used to transport the airflow filtered by the purification component to the evaporator and the condenser.

6. The range hood according to claim 5, characterized in that: The range hood has a third operating mode. When the range hood is in the third operating mode: The first air valve connects the purification component with the smoke exhaust passage, the second air valve connects the cold air passage with the smoke exhaust passage, a part of the oil smoke sucked by the fan is discharged through the smoke exhaust passage and the smoke exhaust port in sequence, another part of the oil smoke enters the purification component through the air inlet for filtration to form purified air, a part of the purified air is transported to the evaporator through the air outlet, is cooled by the evaporator to form cold air and is discharged from the vent, and another part of the purified air is transported to the condenser through the air outlet, is discharged from the smoke exhaust passage after heat exchange by the condenser.

7. The range hood according to claim 5, characterized in that: The range hood further comprises a first flow guide, which is arranged at the connection between the smoke exhaust passage and the air inlet to control the air flow ratio between the smoke exhaust passage and the air inlet.

8. The range hood according to claim 5, characterized in that: The range hood further comprises a second air guide member, which is arranged at the air outlet to control the air flow ratio of the evaporator and the condenser.

9. The range hood according to claim 5, characterized in that: The range hood further comprises a water receiving box, which is arranged below the evaporator in the gravity direction to receive condensed water on the surface of the evaporator.

10. The range hood according to claim 9, characterized in that: A heating element is provided in the water receiving box and is connected to the pipeline of the purification device, so that the condensed water in the water receiving box is heated by the heating element, and the purification device is cleaned by the heated condensed water.

11. The range hood according to claim 9, characterized in that: The water receiving box is located at the downwind port of the condenser so that the condensed water in the water receiving box is heated by the heat of the condenser.

12. The range hood according to any one of claims 9 to 11, characterized in that: The range hood further comprises a water tank, which is connected to the water receiving box pipeline and is detachably installed in the shell.

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