A wind deflector and a cooling range hood

Abstract

An air guide plate and a cooling range hood are disclosed. The air guide plate has an outer air guide plate and an inner air guide plate installed on its air outlet frame. The outer air guide plate swings up and down under the drive of a first driving component, and the inner air guide plate swings up and down under the drive of a second driving component. The inner air guide plate has mesh-like air outlet holes. When both the outer and inner air guide plates are closed, the inner air guide plate is hidden inside the outer air guide plate. The outer and inner air guide plates swing independently under their respective driving components. The coordinated swinging of the two air guide plates optimizes the airflow path, achieving concentrated air delivery and preventing cold air from being blown directly onto the cook's head. When the outer air guide plate is open and the inner air guide plate is closed, air is delivered through the air outlet holes on the inner air guide plate, achieving windless air delivery and improving comfort. The range hood control method distinguishes between high-temperature cooking and normal cooling scenarios by dual judgment of the stove status and ambient temperature, achieving intelligent switching between dynamic air delivery mode and windless mode.

Description

Technical Field

[0001] This utility model relates to a range hood, and more particularly to a wind deflector and a cooling range hood. Background Technology

[0002] To lower the ambient temperature in the kitchen and provide a better user experience, increasingly more cooling-type range hoods are emerging. These add an air conditioning module to the basic range hood platform. The air conditioning module includes a compressor, a heat dissipation module, and an indoor unit module. In cooling mode, the indoor unit module blows out cool air towards the cook, enhancing the cooking experience. The performance and structural design of cooling-type range hoods have a significant impact on the user experience. Currently, most cooling-type range hoods use a single air guide plate structure for their air outlet panel, and the air conditioning guide plate is generally composed of an aluminum alloy lining and a plastic outer surface. This structural design has several drawbacks: First, when the aluminum alloy lining directly contacts the cold air, condensation easily occurs due to the high thermal conductivity of the metal. Meanwhile, the plastic exterior surface, due to its insufficient rigidity, is prone to deformation during use. Both factors combined severely affect the airflow accuracy. Second, the exposed installation of the air guide plate connecting to the swing arm creates a risk of air leakage at the seams, further increasing the risk of condensation. Third, the existing airflow structure is ineffective in guiding airflow. The single air delivery method cannot meet the diverse needs of users. At a constant indoor temperature, the cold air from the air conditioner tends to blow directly onto the user's head, significantly reducing comfort, especially when stir-frying. The closer the user is to the stove, the more likely the cold air will blow on their head. Furthermore, existing air guide plates typically use a single structure, failing to address both directional airflow and the need for a draft-free experience, resulting in a poor user experience. In conclusion, as users' demands for the user experience of kitchen appliances continue to increase, there is an urgent need to improve and optimize the air guide plate structure of existing refrigeration range hoods. Utility Model Content

[0003] The first technical problem to be solved by this utility model is to provide an air guide plate that can optimize the airflow guidance path and achieve windless air delivery, in light of the above-mentioned existing technology.

[0004] The second technical problem to be solved by this utility model is to provide a cooling range hood that can flexibly switch between windless air supply and centralized air supply, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: an air guide plate, including an air outlet frame, characterized in that: an outer air guide plate, an inner air guide plate, a first driving member and a second driving member are installed on the air outlet frame; the outer air guide plate swings up and down relative to the air outlet frame under the drive of the first driving member; the inner air guide plate swings up and down relative to the air outlet frame under the drive of the second driving member; the inner air guide plate is provided with mesh-like air outlet holes; when both the outer air guide plate and the inner air guide plate are closed, the inner air guide plate is hidden inside the outer air guide plate.

[0006] To prevent condensation from forming on the inner surface of the outer air guide plate due to contact with cold air, the outer air guide plate includes an outer layer and an inner layer that are fixed together. The inner layer is made of plastic, and the outer layer is made of plastic or metal. Preferably, the outer layer of the outer air guide plate can be made of aerospace-grade aluminum alloy, with a surface finish that can be brushed, sandblasted, or matte, providing both high rigidity and diverse decorative appeal.

[0007] In order to guide the airflow to adhere to the inner surface of the outer guide plate and reduce turbulence, longitudinally distributed guide grooves are formed on the inner surface of the inner layer.

[0008] The outer and inner air guide plates can have various rotating structures. Preferably, a first swing arm joint is fixed on the inner layer, the first driving component is a first motor, and the output shaft of the first motor is drivenly connected to the first swing arm joint. A second swing arm joint is fixed on the back of the inner air guide plate, the second driving component is a second motor, and the output shaft of the second motor is drivenly connected to the second swing arm joint. With this configuration, the swing arm joints of the outer and inner air guide plates are located on the inner side of the air guide plates, which can make the air guide plates appear seamlessly integrated, reduce the risk of condensation, and reduce the straightness error of the air guide plates.

[0009] To reduce heat transfer, a gap is left between the outer layer and the inner layer.

[0010] More preferably, the gap is at least greater than 3 mm.

[0011] Further preferably, the inner air guide plate is a curved plate with a radius of curvature R of 80–140 mm, and the diameter of the air outlet is 0.8–1.2 mm. This configuration guides the airflow to adhere to the surface and blow downwards at an angle, ensuring that the airflow covers the user's chest and abdomen area.

[0012] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: a refrigerated range hood, comprising an upper housing and an air inlet body located at the bottom of the upper housing, wherein a range hood fan, a compressor, a heat dissipation module and an indoor unit module are installed inside the upper housing, and the compressor, heat dissipation module and indoor unit module are connected through a refrigerant pipeline, characterized in that: the air guide plate is installed on the front of the upper housing or the front of the air inlet body, the air outlet channel of the indoor unit module is fluidly connected to the internal air duct of the air guide plate, and a temperature sensor for detecting the ambient temperature is installed on the upper housing or the air inlet body.

[0013] Preferably, the air guide plate is arranged horizontally and embedded in the upper housing or air inlet. This configuration allows cool air to be blown towards the user in a horizontal or near-horizontal direction without adversely affecting the fume extraction effect.

[0014] Compared with the prior art, the advantages of this utility model are as follows: the outer air guide plate and the inner air guide plate of the cooling range hood swing independently under the drive of their respective driving components. The swing of the two air guide plates can optimize the airflow guidance path, realize concentrated air supply and avoid cold air blowing directly onto the cook's head. When the outer air guide plate is open and the inner air guide plate is closed, air can be discharged through the air outlet on the inner air guide plate to achieve windless air supply and improve comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the air guide plate according to an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the air guide plate from another angle;

[0017] Figure 3 This is a schematic diagram of the structure of the outer air guide plate in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the inner air guide plate in an embodiment of the present utility model;

[0019] Figure 5 This is a cross-sectional view of the external air guide plate according to an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the air guide plate in its initial open state according to an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the air guide plate in the centralized air supply mode according to an embodiment of the present utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the air guide plate in the windless modular form according to an embodiment of the present utility model;

[0023] Figure 9 This is a schematic diagram of the installation scenario for a refrigerated range hood according to an embodiment of the present utility model;

[0024] Figure 10 This is a flowchart illustrating the control method for a refrigerated range hood according to an embodiment of the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 6 As shown, the air guide plate in this embodiment includes an air outlet frame 1. An outer air guide plate 2, an inner air guide plate 3, a first driving component, and a second driving component are mounted on the air outlet frame 1. The outer air guide plate 2 swings up and down relative to the air outlet frame 1 under the drive of the first driving component, and the inner air guide plate 3 swings up and down relative to the air outlet frame 1 under the drive of the second driving component. In this embodiment, the first driving component is a first motor 4, and the second driving component is a second motor. When both the outer air guide plate 2 and the inner air guide plate 3 are closed, the inner air guide plate 3 is hidden inside the outer air guide plate 2.

[0027] In this embodiment, the outer air guide plate 2 adopts a double-layer structure, comprising an outer layer 21 and an inner layer 22, which are fixed together as a single unit. A gap 25 is left between the outer layer 21 and the inner layer 22. The gap 25 reduces air heat transfer, and in this embodiment, the gap is at least 3mm. The outer layer is made of metal, preferably aerospace-grade aluminum alloy, with a surface finish that can be brushed, sandblasted, or matte, providing both high rigidity and diverse decorative appeal. The inner layer 22 is made of plastic and is injection molded to fit the outer layer 21 of the outer air guide plate 2, preventing condensation from forming on the inner surface of the outer air guide plate 2 when exposed to cold air. The inner surface of the inner layer 22 has longitudinally distributed guide grooves 23, which guide the airflow to adhere to the inner surface of the outer air guide plate 2, reducing turbulence, preventing cold air from directly contacting the metal surface, and significantly reducing condensation.

[0028] The inner layer 22 of the outer air guide plate 2 is fixed with a first swing arm joint 24. There are two first motors 4, which are respectively installed on the left and right sides of the air outlet frame 1. The output shaft of the first motor 4 is driven by the first swing arm joint 24. Under the drive of the first motor 4, the outer air guide plate 2 swings up and down.

[0029] A second swing arm connector 32 is fixed to the back of the inner air guide plate 3, and the output shaft of the second motor 5 is driven by the second swing arm connector 32. Under the drive of the second motor 5, the inner air guide plate 3 swings up and down.

[0030] In this embodiment, the inner air guide plate 3 is a curved plate with an involute curved surface. The radius of curvature R of the inner air guide plate 3 is 80-140mm, which guides the airflow to adhere to the surface and blow it out obliquely downwards. CFD simulation shows that the airflow covers 50% of the chest and abdomen area of ​​a user 8 with a height of 1.6m (25cm away from the stove) (compared to only 10% in traditional designs).

[0031] The inner air guide plate 3 has mesh-like air outlet holes 31 distributed on it. The diameter of the air outlet holes 31 is 0.8-1.2 mm (density 20-30 holes / cm). 2 This reduces wind speed by splitting the airflow. In actual testing, the perceived wind speed in the windless mode was ≤0.3m / s, resulting in a 40% improvement in comfort rating.

[0032] like Figure 7 As shown, the opening angle α of the outer air guide plate is in Figure 6 Based on the above, the opening angle β of the inner air guide plate is increased. Figure 6 Reduced from the base shown. For example... Figure 8 As shown, the opening angle α of the outer air guide plate is in Figure 6 Based on the above, the opening angle β of the inner air guide plate remains unchanged. Figure 7 The value is further reduced from the shown value, at which point β = -5°, and the inner air guide plate 3 is in the closed state.

[0033] like Figure 9 As shown, the refrigerated range hood of this embodiment includes an upper housing 6 and an air inlet 7 located at the bottom of the upper housing 6. The upper housing 6 houses a range hood fan, a compressor, a heat dissipation module, and an indoor unit module. The compressor, heat dissipation module, and indoor unit module are connected via refrigerant piping. The compressor, heat dissipation module, and indoor unit module constitute an air conditioning assembly, the working principle of which is conventional technology and will not be described in detail here. In this embodiment, the air guide plate is arranged horizontally and embedded in the upper part of the front of the upper housing 6. The air outlet channel of the indoor unit module is fluidly connected to the internal air duct of the air guide plate. When the refrigerated range hood operates in air conditioning mode, both the range hood fan and the compressor are activated. Cold air is sent into the internal air duct of the air guide plate through the air outlet channel of the indoor unit module and finally blown outwards. Alternatively, the air guide plate can also be arranged horizontally on the air inlet 7.

[0034] In this embodiment, a temperature sensor for detecting ambient temperature is installed on the upper housing 6 or the air inlet 7. By detecting the ambient temperature through the temperature sensor, the system can adjust the opening and closing angle of the air guide plate accordingly to improve the user experience.

[0035] As shown in Figure 10, the control method of the refrigerated range hood in this embodiment includes the following steps:

[0036] S1. The system receives a windless command;

[0037] S2. System initialization and read the following parameters:

[0038] The cool air setting on a refrigerated range hood;

[0039] The operating settings of the range hood;

[0040] The on / off status of the stove;

[0041] The current angle α of the outer air guide plate 2 and the current angle β of the inner air guide plate 3;

[0042] The ambient temperature t is obtained through a temperature sensor;

[0043] S3. Loop through and check the stove's on / off status; the system re-checks the parameters every 10 minutes and executes branch logic based on the stove's status.

[0044] If the stove is turned on, it is determined that the user is cooking, and the user's level of discomfort is determined based on the ambient temperature t, and then the process proceeds to step S4.

[0045] If the stove is turned off, it is determined that the user is not cooking. With the goal of global cooling, the opening angles of the outer air guide plate 2 and the inner air guide plate 3 are adjusted. At this time, the outer air guide plate 2 is adjusted to the maximum opening angle to expand the air supply coverage area, and the inner air guide plate is adjusted to the medium opening angle to balance the wind speed and coverage area. After a set time, the process returns to step S2.

[0046] S4. Determine if the ambient temperature is greater than the set temperature value;

[0047] If so, it is preferable to reduce the intensity of the direct cold air blowing and proceed to step S5;

[0048] If not, determine that the ambient temperature is suitable, adjust the opening angle of the outer air guide plate 2 to reduce the air supply range, and close the inner air guide plate 3. Use the air outlet 31 of the inner air guide plate 3 to supply air, and then return to step S2.

[0049] S5. Determine if the air conditioning setting is at the high level;

[0050] If so, the cold air setting will be reduced to medium, the opening angle α of the outer air guide 2 will remain at the current value, and the opening angle β of the inner air guide 3 will swing within the range of 45° to 100°; the swinging of the inner air guide within this range can avoid direct airflow at a fixed angle;

[0051] If the user still feels uncomfortable even when the cold air setting is at a medium or low level, adjust the opening angle of the outer air guide plate 2 to reduce the air supply range, close the inner air guide plate 3, and use the air outlet 31 of the inner air guide plate 3 to exhaust air, then return to step S2.

[0052] In step S3, the opening angle of the outer air guide plate 2 is α = 55°~65°, and the opening angle of the inner air guide plate 3 is β = 40°~50°; in step S4, when the ambient temperature is not greater than the set temperature value, the opening angle of the outer air guide plate 2 after adjustment is α = 40°~50°; in step S5, when the cold air setting is at the medium-low setting, the opening angle of the outer air guide plate 2 after adjustment is α = 40°~50°.

Claims

1. A wind deflector comprising an air outlet frame (1), characterized in that: The air outlet frame (1) is equipped with an outer air guide plate (2), an inner air guide plate (3), a first driving member, and a second driving member. The outer air guide plate (2) swings up and down relative to the air outlet frame (1) under the drive of the first driving member, and the inner air guide plate (3) swings up and down relative to the air outlet frame (1) under the drive of the second driving member. The inner air guide plate (3) has mesh-like air outlet holes (31) distributed on it. When both the outer air guide plate (2) and the inner air guide plate (3) are closed, the inner air guide plate (3) is hidden inside the outer air guide plate (2).

2. The wind deflector of claim 1, wherein: The outer air guide plate (2) includes an outer layer (21) and an inner layer (22) that are fixed together. The inner layer (22) is made of plastic, and the outer layer (21) is made of plastic or metal.

3. The wind deflector of claim 2, wherein: The inner surface of the inner layer (22) is formed with longitudinally distributed guide grooves (23).

4. The wind deflector of claim 2, wherein: The inner layer (22) is fixed with a first swing arm connector (24), the first driving component is a first motor (4), the output shaft of the first motor (4) is driven to connect with the first swing arm connector (24), the back of the inner air guide plate (3) is fixed with a second swing arm connector (32), the second driving component is a second motor (5), the output shaft of the second motor (5) is driven to connect with the second swing arm connector (32).

5. The wind deflector of claim 2, wherein: A gap (25) is left between the outer layer (21) and the inner layer (22).

6. The wind deflector of claim 1, wherein: The inner air guide plate (3) is a curved plate with a curvature radius R of 80-140 mm and an air outlet (31) with a diameter of 0.8-1.2 mm.

7. A refrigerated range hood, comprising an upper housing (6) and an air inlet (7) disposed at the bottom of the upper housing (6), wherein a range hood fan, a compressor, a heat dissipation module, and an indoor unit module are installed inside the upper housing (6), and the compressor, the heat dissipation module, and the indoor unit module are connected by a refrigerant pipeline, characterized in that: An air guide plate as described in any one of claims 1 to 6 is installed on the front of the upper housing (6) or the front of the air inlet (7). The air outlet channel of the indoor unit module is in fluid communication with the internal air duct of the air guide plate. A temperature sensor for detecting the ambient temperature is installed on the upper housing (6) or the air inlet (7).

8. The refrigerated extractor hood according to claim 7, characterized in that: The air guide plate is arranged horizontally and embedded in the upper box (6) or the air inlet (7).

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