Refrigeration range hood

Abstract

The invention relates to the technical field of household appliances, and discloses a refrigeration range hood which comprises an air conditioner assembly, a refrigeration assembly and a control assembly. The range hood assembly is arranged below the air conditioner assembly and comprises an air cabinet and a range hood fan, a condensation air opening is formed in the air cabinet, and the condensation fan is connected with the condensation air opening; the range hood fan is arranged in the air cabinet; the flow guide partition plate is arranged in the air cabinet, the flow guide partition plate is matched with the inner wall of the air cabinet to form a flow guide cavity, the air inlet end of the flow guide cavity is communicated with the condensate air opening, the air outlet end of the flow guide cavity is communicated with an air inlet of the range hood fan, and the flow guide partition plate comprises an extension section and an air guide section which are sequentially arranged from top to bottom; the air guide section extends to the side wall of the air cabinet from the bottom edge of the extension section. According to the refrigeration range hood, wind resistance can be reduced, the air volume can be increased, and noise reduction is facilitated.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a refrigerated range hood. Background Technology

[0002] A refrigerated range hood refers to a range hood with a refrigeration function, such as... Figures 1 to 3 As shown, the existing refrigeration range hood includes a compressor, a condenser, a condenser fan 101', an evaporator, an evaporator fan 102', and a range hood assembly 2'. The hot air generated by the condenser is discharged into the air handling unit 201' of the range hood, and the hot air and oily fumes are discharged to the outside through the exhaust pipe 203' by the range hood fan 202'.

[0003] In the prior art, in order to avoid the hot airflow discharged into the air handling unit 201' from colliding with the oil fumes sucked in by the range hood fan 202', which would lead to a decrease in the oil fume extraction effect, some refrigeration range hoods have installed a baffle 3' inside the air handling unit 201'. The baffle is separated between the condenser air outlet 2011' of the air handling unit 201' and the air inlet 2021' of the range hood fan 202' to avoid the hot air and oil fumes colliding. However, the baffle 3' blocks the condenser air outlet 2011', which can easily increase the hot air resistance, reduce the air volume, and also cause noise. Summary of the Invention

[0004] In view of this, the present invention provides a refrigerated range hood to solve the defects in the prior art, where the baffle of the refrigerated range hood easily increases the hot air resistance, reduces the air volume, and also causes noise.

[0005] This invention provides a refrigerated range hood, comprising:

[0006] Air conditioning components, including condenser fans;

[0007] The range hood assembly, located below the air conditioning assembly, includes a fan cabinet and a range hood fan. The fan cabinet is equipped with a condenser air outlet, and the condenser fan is connected to the condenser air outlet. The range hood fan is located inside the fan cabinet.

[0008] A baffle plate is installed inside the air handling unit. The baffle plate and the inner wall of the air handling unit cooperate to form a baffle cavity. The air inlet end of the baffle cavity is connected to the condenser air outlet, and the air outlet end of the baffle cavity is connected to the air inlet of the range hood fan. The baffle plate includes an extension section and a guide section arranged sequentially from top to bottom. The extension section extends downward from the top wall of the air handling unit, and the guide section extends from the bottom edge of the extension section to the side wall of the air handling unit.

[0009] Beneficial effects: In the use of the refrigeration range hood of the present invention, when the air conditioning component and the range hood component are running simultaneously, the condenser fan can exhaust hot air into the air cabinet through the condenser air outlet. The hot air can enter the guide cavity, and then flow from the air outlet of the guide cavity to the air inlet of the range hood fan. The range hood fan then exhausts the hot air through the exhaust pipe, thereby preventing the hot air and oil fumes from clashing. While reducing the hot air exhaust resistance, the smoke extraction effect of the range hood component is guaranteed.

[0010] Based on this, the extension section of the baffle plate extends downward, which can increase the distance between the condenser air outlet and the air guide section. This avoids the high-speed air outlet area of ​​the condenser fan being too close to the air guide section, which would cause excessive airflow impact loss, increased wind resistance, and reduced air volume. The ideal cooling effect can be achieved without increasing the air volume, thus avoiding increased noise.

[0011] In one alternative implementation, the bottom edge of the extension is a horizontal edge.

[0012] In one alternative embodiment, the axis of the range hood fan forms an angle with the horizontal direction, and the bottom edge of the extension section is inclined in the same direction as the axis of the range hood fan.

[0013] Beneficial effects: In this embodiment, the bottom edge of the extension section is inclined in the same direction as the axis of the range hood fan, which makes full use of the space between the range hood fan and the air handling unit, thereby further reducing wind resistance, increasing air volume, and helping to reduce noise.

[0014] In one optional embodiment, the extension section includes a first side and a second side connected to the bottom edge of the extension section. The first side and the second side are arranged sequentially along the direction from the installation side to the operation side of the refrigeration range hood. The length of the first side is d1, the length of the second side is d2, and the dimension of the baffle along the depth direction of the air handling unit is L1.

[0015] Along the direction from the installation side to the operation side of the refrigeration range hood, the axis of the range hood fan is inclined upwards, and the acute angle formed between the axis of the range hood fan and the vertical direction is θ1, d2<d1≤d2+L1cotθ1; and / or,

[0016] Along the direction from the installation side to the operation side of the refrigeration range hood, the axis of the range hood fan is inclined downward, and the obtuse angle formed between the axis of the range hood fan and the vertical direction is θ1, d1<d2≤d1+L1cot(180°-θ1).

[0017] Beneficial effects: This configuration allows for maximum utilization of the gap between the range hood fan and the top wall of the air handling unit without increasing the distance between them. This reduces wind resistance, increases air volume, and helps reduce the noise generated by the refrigeration range hood during operation.

[0018] In one optional embodiment, the line connecting the top and bottom of the section of the extension segment perpendicular to the depth of the air handling unit is the first connecting line. The angle between the first connecting line and the horizontal plane in the direction from the installation side of the refrigeration range hood to the operation side is θ2, where 70°≤θ2≤150°.

[0019] Beneficial effects: When θ2 is within the above range, the extension section can effectively increase the distance between the air guide section and the condenser air outlet, reduce the resistance of the air guide section to the exhaust of the condenser fan, so that the speed of the condenser fan decreases under the same exhaust volume, thereby reducing the noise of the condenser fan.

[0020] In one alternative implementation, the air guide section includes:

[0021] The first guide section extends to the bottom edge of the extension section and is arranged around the outer periphery of the smoke fan. The second end of the first guide section extends to one side of the air inlet of the smoke fan.

[0022] The second guide section extends from the second end of the first guide section to the side wall of the blower.

[0023] Beneficial effects: The first guide section guides the hot air downwards to the air inlet of the range hood fan without interfering with the flue gas. The second guide section seals the lower end of the first guide section from the side wall of the air handling unit, allowing the hot air to exit from the outlet of the guide cavity and enter the air inlet of the range hood fan under the guidance of the second guide section.

[0024] In one optional embodiment, the second guide section is inclined, and the inclination direction of the second guide section is the same as the inclination direction of the axis of the smoke fan.

[0025] Beneficial effect: This setting helps to reduce the resistance of the smoke inlet duct of the range hood components.

[0026] In one alternative implementation, the second guide section is a flat plate structure, and the second guide section is parallel to the axial direction of the smoke hood fan.

[0027] Beneficial effect: This setting helps to reduce the resistance of the smoke inlet duct of the range hood components.

[0028] In one alternative implementation, the second guide section is a flat plate structure and is parallel to the horizontal plane.

[0029] In one alternative embodiment, the air inlet of the smoke hood fan includes a main air inlet and a secondary air inlet, with the main air inlet facing the first wall of the air handling unit, and one side edge of the baffle plate extending to the first wall of the air handling unit.

[0030] Beneficial effects: With this configuration, hot air can flow downwards along the guide cavity and be output at the outlet of the guide cavity, and then enter the auxiliary air inlet of the range hood fan. In this way, the hot air is discharged through the auxiliary air inlet of the range hood fan, and the flow direction of hot air and oil fumes entering the main air inlet of the range hood fan is staggered, which helps to improve the smoke extraction effect of the range hood.

[0031] In one optional embodiment, the first guide plate and the second guide section are separate structures, and the second guide section includes a rotating edge that is connected to the first wall of the blower.

[0032] The smoke hood assembly also includes a rotation source, which is located inside the air handling unit and has its power output end connected to the second guide section, enabling the second guide section to rotate around the rotating edge.

[0033] Beneficial effects: When the second guide section is inclined upward along the direction from the installation side to the operation side of the refrigeration range hood, it can help reduce the resistance of the refrigeration range hood's smoke inlet duct and increase the smoke intake of the range hood, but it will reduce the heat exhaust volume of the air conditioning components.

[0034] When the second guide section is tilted downwards along the direction from the installation side to the operation side of the refrigeration range hood, it can help increase the exhaust air volume of the air conditioning components, but it will affect the smoke extraction volume of the range hood components.

[0035] In this embodiment of the invention, the second guide section of the refrigerated range hood is rotatably connected to the first wall of the air handling unit via a rotating source. This allows the second guide section to be adjusted to tilt upwards along the direction from the installation side to the operation side of the refrigerated range hood when the range hood fan is in single smoke mode or smoke-cooling combination mode, thereby avoiding affecting the smoke intake of the range hood components.

[0036] When the range hood fan is in single cooling mode, the second guide section can be adjusted to tilt downwards along the direction from the installation side to the operation side of the cooling range hood, thereby ensuring the exhaust air volume of the air conditioning components.

[0037] Therefore, the cooling range hood of the present invention can ensure the heat exhaust volume of the air conditioning component without affecting the smoke extraction volume of the range hood component.

[0038] In one alternative implementation, the first guide section includes at least two guide plates connected sequentially from top to bottom, the at least two guide plates being arranged at an included angle.

[0039] Beneficial effects: This configuration allows the first flow guide section to surround the outer periphery of the smoke hood fan, thereby increasing the space of the flow guide cavity formed between the flow guide baffle and the air handling unit, and thus reducing the flow resistance of the hot air in the flow guide cavity.

[0040] In one alternative embodiment, the range hood assembly further includes a volute enclosure, the range hood fan is disposed within the volute enclosure, the bottom end of the extension section extends to the volute enclosure, and the first guide section is at least partially formed by the volute enclosure.

[0041] Beneficial effects: By using this configuration, the part of the first guide section that overlaps with the volute enclosure is replaced by the volute enclosure, which reduces the number of parts in the refrigeration range hood. It can also further expand the space of the guide cavity, reduce wind resistance, increase the exhaust air volume, and thus enhance the cooling effect of the refrigeration range hood.

[0042] In one optional embodiment, the air inlet of the flue fan includes a main air inlet and a secondary air inlet, with the main air inlet facing the first wall of the air handling unit, and the first guide section of the fan further includes:

[0043] A sealing plate is installed between the volute enclosure and the first wall of the air handling unit. One edge of the sealing plate extends to the first wall, and the other edge of the sealing plate extends to the volute enclosure.

[0044] Beneficial effects: The sealing plate can be placed between the volute enclosure and the first wall of the blower, thereby preventing hot air and fumes from colliding at the gap between the volute enclosure and the first wall, thus reducing the hot air exhaust resistance while ensuring the smoke extraction effect of the smoke hood components.

[0045] In one optional embodiment, the first guide section is connected to the second guide section, the second guide section is a flat plate structure, and the maximum height difference between the top edge of the extension section and the lower side plate surface of the second guide section is H, where 40mm ≤ H ≤ 450mm; and / or,

[0046] The first and second guide sections are separate structures. The second guide section includes a rotating edge that is connected to the first wall of the air handling unit. The smoke hood assembly also includes a rotation source located inside the air handling unit, with its power output end connected to the second guide section. This source can drive the second guide section to rotate around the rotating edge. The maximum height difference between the top edge of the extension section and the rotating edge of the second guide section is H, where 40mm ≤ H ≤ 450mm.

[0047] In one alternative implementation, the dimension of the baffle along the depth direction of the blower is L1;

[0048] The maximum depth of the inner cavity of the blower is L2, 0.5≤L1 / L2≤0.99.

[0049] Beneficial effects: The blower unit includes a second wall opposite to the first wall. When the ratio of L1 to L2 is within the aforementioned range, it increases the distance between the guide baffle and the second wall of the blower unit. This facilitates the downward movement of hot air from the guide cavity along the guide baffle and through the gap between the guide baffle and the second wall into the auxiliary air inlet of the range hood fan. The hot air is then absorbed by the cooling range hood, thereby reducing the resistance to hot air exhaust and improving the cooling effect of the cooling range hood.

[0050] In one alternative implementation, the flow guide baffle is provided with flow holes.

[0051] Beneficial effects: With this configuration, some of the hot air in the guide cavity can flow out through the flow hole and enter the air inlet of the smoke fan, thereby improving the counterflow of smoke and heat, reducing the resistance of the exhaust air, helping to reduce energy consumption and noise, and enhancing exhaust efficiency. Attached Figure Description

[0052] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0053] Figure 1 This is a front view of a refrigerated range hood in the prior art;

[0054] Figure 2 This is a side view of a refrigerated range hood in the prior art;

[0055] Figure 3 A flow guide baffle for a refrigerated range hood in the prior art;

[0056] Figure 4 This is a front view of a refrigerated range hood according to an embodiment of the present invention;

[0057] Figure 5 for Figure 4 An enlarged schematic diagram of point A on the refrigerated range hood shown;

[0058] Figure 6 This is a side view of a refrigerated range hood according to an embodiment of the present invention;

[0059] Figure 7 This is a perspective view of a flow guide baffle of a refrigerated range hood according to an embodiment of the present invention, viewed from one angle.

[0060] Figure 8 This is a perspective view of a flow guide baffle of a refrigerated range hood according to an embodiment of the present invention from another angle;

[0061] Figure 9 This is a side sectional view of a refrigerated range hood according to an embodiment of the present invention. In the figure, the second guide section is inclined upward in the direction from the installation side to the operation side of the refrigerated range hood.

[0062] Figure 10 This is a side sectional view of a refrigerated range hood according to an embodiment of the present invention. In the figure, the second guide section is inclined downward in the direction from the installation side to the operation side of the refrigerated range hood.

[0063] Figure 11 This is a schematic diagram of another type of refrigerated range hood according to an embodiment of the present invention;

[0064] Figure 12 for Figure 11 The side sectional view of the refrigerated range hood shown;

[0065] Figure 13 This is another example of a flow guide baffle for a refrigerated range hood according to an embodiment of the present invention;

[0066] Figure 14 This is a pressure cloud diagram of the flow guide baffle of a refrigerated range hood in the prior art;

[0067] Figure 15 This is a pressure cloud diagram of the flow guide baffle of a refrigerated range hood according to an embodiment of the present invention.

[0068] Explanation of reference numerals in the attached figures:

[0069] 1. Air conditioning components; 101. Condenser fan; 102. Evaporator fan;

[0070] 2. Range hood assembly; 201. Air handling unit; 2011. Condensate vent; 2012. First wall; 2013. Second wall;

[0071] 202. Smoke hood fan; 2021. Air inlet; 20211. Main air inlet; 20212. Secondary air inlet;

[0072] 203. Exhaust duct; 204. Main smoke inlet; 205. Secondary smoke inlet;

[0073] 3. Flow guide baffle; 301. Extension section; 3011. Bottom edge; 3012. First side; 3013. Second side; 302. Air guide section; 3021. First flow guide section; 30211. Flow guide plate; 30212. Volute casing plate; 30213. Sealing plate; 303. Flow passage hole;

[0074] 4. Flow guiding cavity;

[0075] 3022, Second guide section; 30221, Rotating edge;

[0076] 101' Condensing fan;

[0077] 2', Smoke hood assembly; 201', Air handling unit; 2011', Condensate vent; 202', Smoke hood fan; 2021', Air inlet; 203', Exhaust duct;

[0078] 3', flow guide baffle; 301', first flow guide section; 302', second flow guide section; 303', third flow guide section. Detailed Implementation

[0079] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0080] like Figures 1 to 3 As shown, in the prior art, the flow guide baffle 3' includes a first flow guide section 301', a second flow guide section 302', and a third flow guide section 303' connected sequentially from top to bottom. The angle between the plane of the first flow guide section 301' and the plane of the top wall of the air handling unit 201' is θ1', where 35°≤θ1'≤45°. The second flow guide section 302' is arranged around the smoke hood fan 202', and the plane of the third flow guide section 303' is parallel to the horizontal plane. The dimension of the flow guide baffle 3' along the depth direction of the air handling unit 201' is L2', and the maximum depth of the air handling unit 201' is L2', where 0.83≤L1' / L2'≤0.9.

[0081] The following is combined with Figures 4 to 15 The following describes embodiments of the present invention.

[0082] According to an embodiment of the present invention, a refrigerated range hood is provided, including an air conditioning component 1, a range hood component 2, and a flow guide baffle 3.

[0083] The air conditioning component 1 includes a condenser fan 101. The range hood component 2 is located below the air conditioning component 1. It includes an air handling unit 201 and a range hood fan 202. The air handling unit 201 has a condenser air outlet 2011, and the condenser fan 101 is connected to the condenser air outlet 2011. The range hood fan 202 is located inside the air handling unit 201. A baffle 3 is located inside the air handling unit 201. The baffle 3 and the inner wall of the air handling unit 201 cooperate to form a baffle cavity 4. The air inlet of the baffle cavity 4 is connected to the condenser air outlet 2011, and the air outlet of the baffle cavity 4 is connected to the air inlet 2021 of the range hood fan 202. The baffle 3 includes an extension section 301 and a guide section 302 arranged sequentially from top to bottom. The extension section 301 extends downward from the top wall of the air handling unit 201, and the guide section 302 extends from the bottom edge 3011 of the extension section 301 to the side wall of the air handling unit 201.

[0084] In the use of the refrigeration range hood of this embodiment, when the air conditioning component 1 and the range hood component 2 are running simultaneously, the condenser fan 101 can exhaust hot air into the air handling unit 201 through the condenser air outlet 2011. The hot air can enter the guide cavity 4, and then flow from the air outlet of the guide cavity 4 to the air inlet 2021 of the range hood fan 202. The range hood fan 202 then exhausts the hot air through the exhaust pipe 203, thereby preventing the hot air and oil fumes from clashing. While reducing the hot air exhaust resistance, the smoke extraction effect of the range hood component 2 is guaranteed.

[0085] Based on this, such as Figure 4 and Figure 5 As shown, the extension section 301 of the baffle plate 3 extends downward, which can increase the distance between the condenser air outlet 2011 and the air guide section 302. This avoids the high-speed air outlet area of ​​the condenser fan 101 being too close to the air guide section 302, which would cause excessive airflow impact loss, increased wind resistance, and reduced air volume. The ideal cooling effect can be achieved without increasing the air volume, thus avoiding increased noise.

[0086] In the embodiments of this application, it should be noted that the extension section 301 extends downward from the top wall of the air handling unit 201, which means that the top edge of the extension section 301 is connected to or close to the top wall of the air handling unit 201. The positional relationship between the two includes, but is not limited to, a sealed connection, a partial area connection, abutment, or the presence of some gaps.

[0087] In one embodiment, the top edge of the extension 301 is sealed to the top wall of the air handling unit 201.

[0088] As an alternative implementation, in an embodiment not shown in the accompanying drawings, there may also be some gaps at the connection between the top edge of the extension 301 and the top wall of the air handling unit 201.

[0089] In one embodiment, the bottom edge 3011 of the extension 301 is a horizontal edge.

[0090] In one embodiment, the axis of the range hood fan 202 forms an angle with the horizontal direction, and the bottom edge 3011 of the extension section 301 is inclined and in the same direction as the axis of the range hood fan 202.

[0091] In this embodiment, the bottom edge 3011 of the extension section 301 is inclined in the same direction as the axis of the range hood fan 202, thereby making full use of the space between the range hood fan 202 and the air handling unit 201, thereby further reducing wind resistance, increasing air volume, and helping to reduce noise.

[0092] like Figure 14 and Figure 15As shown, in this embodiment of the application, the baffle 3, by setting an extension section 301, increases the distance between the air guide section 302 and the condenser air outlet 2011, effectively reducing the surface pressure of the baffle 3, that is, reducing the impact of the airflow at the condenser air outlet 2011 on the baffle 3, reducing the impact loss of hot air, and thus reducing the exhaust resistance of hot air, ensuring the smoke extraction effect of the range hood assembly 2.

[0093] In one embodiment, the extension section 301 includes a first side 3012 and a second side 3013 connected to the bottom edge 3011 of the extension section 301. The first side 3012 and the second side 3013 are arranged sequentially along the direction from the installation side to the operation side of the refrigeration range hood. The length of the first side 3012 is d1, the length of the second side 3013 is d2, and the dimension of the baffle plate 3 along the depth direction of the air handling unit 201 is L1.

[0094] Along the direction from the installation side to the operation side of the refrigeration fan, the axis of the fan 202 is inclined upward, and the acute angle formed between the axis of the fan 202 and the vertical direction is θ1, d2<d1≤d2+L1cotθ1; and / or,

[0095] Along the direction from the installation side to the operation side of the refrigeration range hood, the axis of the range hood fan 202 is inclined downward, and the obtuse angle formed between the axis of the range hood fan 202 and the vertical direction is θ1, d1<d2≤d1+L1cot(180°-θ1).

[0096] With this configuration, the gap between the range hood fan 202 and the top wall of the air handling unit 201 can be fully utilized to the maximum extent without increasing the distance between them. This reduces wind resistance, increases air volume, and helps reduce the noise generated by the refrigeration range hood during operation.

[0097] The bottom edge 3011 of the extension section 301 is inclined in the same direction as the axis of the range hood fan 202. This means that when the axis of the range hood fan 202 is inclined upward along the direction from the installation side to the operation side of the refrigeration range hood, the bottom edge 3011 of the extension section 301 is also inclined upward.

[0098] When the axis of the fan 202 of the refrigeration range hood tilts downward along the direction from the installation side to the operation side, the bottom edge 3011 of the extension section 301 also tilts downward.

[0099] In one embodiment, along the direction from the installation side to the operation side of the refrigeration fan, the angle between the axis of the fan 202 and the horizontal direction is θ3, -45°≤θ3≤45°.

[0100] Specifically, when θ3 is negative, the axis of the smoke hood fan 202 tilts downward from the horizontal position, and when θ3 is positive, the axis of the smoke hood fan 202 tilts upward from the horizontal position.

[0101] In one embodiment, θ3 = 10°.

[0102] In one embodiment, the first side 3012 and the second side 3013 are straight sides. As a variation, in an embodiment not shown in the accompanying drawings, the first side 3012 and the second side 3013 are curved sides, where d1 is the length of the line connecting the two ends of the first side 3012 and d2 is the length of the line connecting the two ends of the second side 3013.

[0103] In one embodiment, the bottom edge 3011 of the extension 301 is a straight edge, and the bottom edge 3011 of the extension 301 is parallel to the axis of the smoke hood fan 202.

[0104] As an alternative implementation, in an embodiment not shown in the accompanying drawings, the bottom edge 3011 of the extension 301 is an arc-shaped edge, and the line connecting the two ends of the extension 301 along the depth direction of the air handling unit 201 is parallel to the axis of the smoke hood fan 202.

[0105] In one embodiment, such as Figure 4 and Figure 5 As shown, the line connecting the top and bottom of the section of the extension segment 301 along the direction perpendicular to the depth of the air handling unit 201 is the first connecting line. In the direction from the installation side of the refrigeration range hood to the operation side, the angle between the first connecting line and the horizontal plane is θ2, where 70°≤θ2≤150°.

[0106] When θ2 is within the above range, the extension section 301 can effectively increase the distance between the air guide section 302 and the condenser air outlet 2011, reduce the resistance of the air guide section 302 to the exhaust of the condenser fan 101, so that the speed of the condenser fan 101 decreases under the same exhaust volume, thereby reducing the noise of the condenser fan 101.

[0107] In one embodiment, θ2 = 90°.

[0108] In one embodiment, such as Figure 7 and Figure 8 As shown, the air guide section 302 includes a first guide section 3021 and a second guide section 3022.

[0109] The first guide section 3021 extends from its first end to the bottom edge 3011 of the extension section 301, and is arranged around the outer periphery of the flue fan 202. The second end of the first guide section 3021 extends to one side of the air inlet 2021 of the flue fan 202. The second guide section 3022 extends from the second end of the first guide section 3021 to the side wall of the air handling unit 201.

[0110] The first guide section 3021 guides the hot air downwards to the air inlet 2021 of the flue fan 202 without interfering with the flue gas. The second guide section 3022 closes the lower end of the first guide section 3021 to the side wall of the air handling unit 201, allowing the hot air to exit from the outlet of the guide cavity 4 and enter the air inlet 2021 of the flue fan 202 under the guidance of the second guide section 3022.

[0111] In the description of the embodiments of this application, it should be noted that "extending to" means that two components are in contact or close to each other, and the positional relationship between the two includes or is not limited to a sealed connection, a partial area connection, abutment, or the presence of some gaps.

[0112] In one embodiment, the bottom edge 3011 of the first end extension 301 of the first guide section 3021.

[0113] In one embodiment, such as Figure 9 As shown, the angle between the axis of the smoke fan 202 and the horizontal plane is θ1, and the angle between the plane where the second guide section 3022 is located and the horizontal plane is θ3, θ1=θ3.

[0114] In one embodiment, the second guide section 3022 is inclined, and the inclination direction of the second guide section 3022 is the same as the inclination direction of the axis of the smoke fan 202.

[0115] This configuration helps to reduce the resistance of the smoke inlet duct of the range hood assembly 2.

[0116] In one embodiment, the second guide section 3022 is a flat plate structure, and the second guide section 3022 is parallel to the axial direction of the smoke fan 202.

[0117] As a possible implementation, in one embodiment not shown in the accompanying drawings, the second guide section 3022 is an arc-shaped plate. The line connecting the two ends of the second guide section 3022 along the depth direction of the air handling unit 201 is parallel to the axial direction of the smoke hood fan 202.

[0118] As a possible implementation, in another embodiment not shown in the accompanying drawings, the second guide section 3022 is a flat plate structure, and the plane on which the second guide section 3022 is located is parallel to the horizontal plane.

[0119] In one embodiment, such as Figure 6 As shown, the air inlet 2021 of the smoke hood fan 202 includes a main air inlet 20211 and a secondary air inlet 20212. The main air inlet 20211 is disposed facing the first wall 2012 of the air handling unit 201, and one side edge of the baffle plate 3 extends to the first wall 2012 of the air handling unit 201.

[0120] With this configuration, hot air can flow downwards along the guide cavity 4 and be output at the outlet of the guide cavity 4, and then enter the auxiliary air inlet 20212 of the range hood fan 202. Thus, the hot air is discharged through the auxiliary air inlet 20212 of the range hood fan 202, and the flow direction of the hot air and the oil fumes entering the main air inlet 20211 of the range hood fan 202 is staggered, which helps to improve the smoke extraction effect of the range hood.

[0121] In one embodiment, the flow guide baffle 3 is connected to the first wall 2012 of the air handling unit 201.

[0122] In one embodiment, the cooling range hood is a top-side dual-suction range hood, and the range hood assembly 2 further includes a smoke collection hood. The smoke collection hood includes a first air duct cavity, a second air duct cavity, a main smoke inlet, and a secondary smoke inlet. A secondary smoke inlet 205 is provided on the lower side of the smoke collection hood, and the first air duct cavity connects the secondary smoke inlet 205 and the secondary air inlet 20212 of the range hood fan 202.

[0123] The second air duct cavity is located on the installation side of the refrigeration range hood and is at least partially located below the first air duct cavity. The second air duct cavity connects the auxiliary smoke inlet and the auxiliary air inlet 20212 of the range hood.

[0124] In one embodiment, the main air inlet 20211 of the range hood fan 202 is disposed facing the rear wall of the air handling unit 201, and the baffle plate 3 is connected to the rear wall of the air handling unit 201.

[0125] As an alternative implementation, in an embodiment not shown in the accompanying drawings, the main air inlet 20211 of the smoke hood fan 202 is disposed facing the front wall of the air handling unit 201, and the baffle plate 3 is connected to the front wall of the air handling unit 201.

[0126] In one embodiment, the first guide section 3021 and the second guide section 3022 are separate structures. The second guide section 3022 includes a rotating edge 30221, which is connected to the first wall 2012 of the air handling unit 201.

[0127] The rotation source is located inside the air handling unit 201, and the power output end is connected to the second guide section 3022, which can drive the second guide section 3022 to rotate around the rotating edge 30221.

[0128] When the second guide section 3022 is inclined upward along the direction from the installation side to the operation side of the refrigeration range hood, it can help reduce the resistance of the refrigeration range hood's smoke inlet duct and increase the smoke intake of the range hood, but it will reduce the exhaust air volume of the air conditioning component 1.

[0129] like Figure 10 As shown, when the second guide section 3022 is inclined downward along the direction from the installation side to the operation side of the refrigeration range hood, it can help increase the exhaust air volume of the air conditioning component 1, but it has an impact on the smoke extraction volume of the range hood component 2.

[0130] In this embodiment of the invention, the second guide section 3022 of the refrigerated range hood is rotatably connected to the first wall 2012 of the air handling unit 201 via a rotating source. This allows the second guide section 3022 to be adjusted to tilt upwards along the direction from the installation side to the operation side of the refrigerated range hood when the range hood fan 202 is in single smoke extraction mode or smoke extraction and refrigeration combined mode, thereby avoiding affecting the smoke extraction volume of the range hood assembly 2. When the range hood fan 202 is in single refrigeration mode, the second guide section 3022 can be adjusted to tilt downwards along the direction from the installation side to the operation side of the refrigerated range hood, thereby ensuring the heat exhaust volume of the air conditioning assembly 1.

[0131] Therefore, the cooling range hood of the present invention can ensure the heat exhaust volume of the air conditioning component 1 without affecting the smoke extraction volume of the range hood component 2.

[0132] In one embodiment, the first wall 2012 of the blower 201 is provided with a hinge, the rotating edge 30221 is rotatably connected to the hinge, the power output end of the rotation source is connected to the rotating edge 30221, and can drive the second guide section 3022 to rotate around the rotating edge 30221.

[0133] The rotation source can be a device capable of outputting rotation, such as an electric motor, engine, hydraulic motor, or a combination of one of these with a speed reducer.

[0134] In one embodiment, the first guide section 3021 includes at least two guide plates 30211 connected sequentially from top to bottom, and the at least two guide plates 30211 are arranged at an included angle.

[0135] With this arrangement, the first guide section 3021 can be arranged around the outer periphery of the smoke fan 202, thereby increasing the space of the guide cavity 4 formed between the guide baffle 3 and the air handling unit 201, and thus reducing the flow resistance of the hot air in the guide cavity 4.

[0136] It should be noted that, in this embodiment of the invention, there is a gap between the first guide section 3021 and the outer periphery of the range hood fan 202. The width of the gap is not limited, as long as it does not interfere with the range hood fan 202.

[0137] It should be noted that in the description of the embodiments of this application, "connection" can refer to a sealed connection or a partial connection.

[0138] In one embodiment, the first guide section 3021 includes three guide vanes 30211 arranged at an angle.

[0139] As a possible implementation, in one embodiment not shown in the accompanying drawings, the second guide section 3022 is an arc-shaped section arranged around the outer periphery of the smoke fan 202.

[0140] As a variable implementation method, such as Figure 11 and Figure 12 As shown, the range hood assembly 2 also includes a volute enclosure 30212, the range hood fan 202 is disposed inside the volute enclosure 30212, the bottom end of the extension section 301 extends to the volute enclosure 30212, and the first guide section 3021 is at least partially composed of the volute enclosure 30212.

[0141] By setting it up in this way, the part of the first guide section 3021 that overlaps with the volute enclosure 30212 is replaced by the volute enclosure 30212. This reduces the number of parts in the refrigeration range hood and can further expand the space of the guide cavity 4, reduce wind resistance, increase the exhaust air volume, and thus enhance the cooling effect of the refrigeration range hood.

[0142] In one embodiment, the air inlet 2021 of the range hood fan 202 includes a main air inlet 20211 and a secondary air inlet 20212. The main air inlet 20211 is disposed toward the first wall 2012 of the air handling unit 201, and the first guide section 3021 of the fan also includes a blocking plate 30213.

[0143] The sealing plate 30213 is disposed between the volute enclosure plate 30212 and the first wall 2012 of the air handling unit 201. One edge of the sealing plate 30213 extends to the first wall 2012, and the other edge of the sealing plate 30213 extends to the volute enclosure plate 30212.

[0144] The sealing plate 30213 can be installed between the volute enclosure plate 30212 and the first wall 2012 of the air handling unit 201, thereby preventing hot air and fumes from colliding at the gap between the volute enclosure plate 30212 and the first wall 2012, thus reducing the hot air exhaust resistance while ensuring the smoke extraction effect of the smoke hood assembly 2.

[0145] In one embodiment, the second guide section 3022 is connected to the first guide section 3021. The second guide section 3022 is a flat plate structure. The maximum height difference between the top edge of the extension section 301 and the lower side plate of the second guide section 3022 is H, where 40mm≤H≤450mm.

[0146] In one embodiment, the first guide section 3021 and the second guide section 3022 are separate structures. The second guide section 3022 includes a rotating edge 30221. The rotating edge 30221 is connected to the first wall 2012 of the air handling unit 201. The smoke hood assembly 2 also includes a rotation source, which is located inside the air handling unit 201 and has its power output end connected to the second guide section 3022, enabling it to drive the second guide section 3022 to rotate around the rotating edge 30221. The maximum height difference between the top edge of the extension section 301 and the rotating edge 30221 of the second guide section 3022 is H, where 40mm ≤ H ≤ 450mm.

[0147] In one embodiment, such as Figure 9 and Figure 10 As shown, the dimension of the baffle plate 3 along the depth direction of the air handling unit 201 is L1. The maximum depth of the inner cavity of the air handling unit 201 is L2, 0.5≤L1 / L2≤0.99.

[0148] The air handling unit 201 includes a second wall 2013 disposed opposite to the first wall 2012. When the ratio of L1 to L2 is within the aforementioned range, the distance between the guide baffle 3 and the second wall 2013 of the air handling unit 201 can be increased. This allows the hot air in the guide cavity 4 to move downward along the guide baffle 3 and enter the secondary air inlet 20212 of the range hood fan 202 through the gap between the guide baffle 3 and the second wall 2013. The hot air is then absorbed by the cooling range hood, thereby reducing the resistance to hot air exhaust and improving the cooling effect of the cooling range hood.

[0149] In one embodiment, such as Figure 13 As shown, the flow guide baffle 3 is provided with flow holes 303.

[0150] With this configuration, some of the hot air in the guide cavity 4 can flow out through the flow hole 303 and enter the air inlet 2021 of the smoke fan 202, thereby improving the flushing of smoke and heat, reducing the resistance of the exhaust air, helping to reduce energy consumption and noise, and enhancing exhaust efficiency.

[0151] In one embodiment, the edge of the flow guide baffle 3 near the second wall 2013 is a straight edge.

[0152] As a variable implementation, when the edge of the flow guide baffle 3 near the second wall 2013 is curved or irregular in shape, L1 is the equivalent width of the flow guide baffle 3.

[0153] The calculation formula is as follows:

[0154] L1 = A 有效 / L;

[0155] In the formula, A 有效 The effective projected area of ​​the baffle plate 3 in the width direction of the air handling unit 201 is expressed in mm. 2L is the average length of the guide baffle 3 along the airflow direction, in mm.

[0156] Although the cooling range hood in this application embodiment is a top-side dual-suction range hood, the cooling range hood in this application embodiment is not limited to this. In some embodiments not shown in the accompanying drawings, the cooling range hood may also be a side-suction range hood, a European-style range hood, or a cross-border range hood platform, etc.

[0157] The applicant simulated the condensate exhaust volume of the refrigerated range hood in the refrigeration mode of the embodiment of this application and the refrigerated range hood in the prior art, and recorded the data as follows:

[0158]

[0159]

[0160] The applicant simulated the condensate exhaust volume and smoke extraction volume of the refrigerated range hood in the embodiment of this application and the refrigerated range hood in the prior art under the combined smoke extraction and refrigeration mode, and recorded the data as follows:

[0161]

[0162] As can be seen from the comparison, the baffle plate 3 of the present invention can improve the exhaust volume of the condenser fan 101 in different modes. In the single cooling mode, since there is no interference from oil fumes, the improvement effect on exhaust volume is better, and the air volume is increased by 4%.

[0163] In single-cooling mode, the main smoke inlet 204 and auxiliary smoke inlet 205 of the cooling range hood are closed. The condenser fan 101 and the range hood fan 202 are turned on, and the hot air discharged by the condenser fan 101 is discharged to the outside through the exhaust pipe 203 of the range hood assembly 2.

[0164] In the combined smoke extraction and cooling mode, the condenser fan 101 and the range hood fan 202 are turned on simultaneously, and the main smoke extraction port 204 and the auxiliary smoke extraction port 205 of the range hood component 2 are turned on, so the cooling and smoke extraction functions of the cooling range hood are running at the same time.

[0165] In one embodiment, the cooling range hood also includes an evaporator fan 102, which can draw hot air from the kitchen onto the surface of the evaporator and blow the cooled air back into the room to achieve localized cooling.

[0166] In summary, the refrigeration range hood of this embodiment can make full use of the space between the range hood fan 202 and the air handling unit 201, thereby further reducing wind resistance, increasing air volume, and helping to reduce noise.

[0167] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope of protection claimed by the present invention.

Claims

1. A refrigerated range hood, characterized in that, include: An air conditioning assembly (1) includes a condenser fan (101); A range hood assembly (2) is located below the air conditioning assembly (1) and includes a fan cabinet (201) and a range hood fan (202). The fan cabinet (201) is provided with a condenser air outlet (2011), and the condenser fan (101) is connected to the condenser air outlet (2011). The range hood fan (202) is located inside the fan cabinet (201). A flow guide baffle (3) is disposed inside the air handling unit (201). The flow guide baffle (3) and the inner wall of the air handling unit (201) cooperate to form a flow guide cavity (4). The air inlet end of the flow guide cavity (4) is connected to the condenser air outlet (2011). The air outlet end of the flow guide cavity (4) is connected to the air inlet (2021) of the smoke hood fan (202). The flow guide baffle (3) includes an extension section (301) and a guide section (302) arranged sequentially from top to bottom. The extension section (301) extends downward from the top wall of the air handling unit (201). The guide section (302) extends from the bottom edge (3011) of the extension section (301) to the side wall of the air handling unit (201).

2. The refrigerated range hood according to claim 1, characterized in that, The bottom edge (3011) of the extension segment (301) is a horizontal edge.

3. The refrigerated range hood according to claim 1, characterized in that, The axis of the smoke hood fan (202) forms an angle with the horizontal direction, and the bottom edge (3011) of the extension section (301) is inclined and in the same direction as the axis of the smoke hood fan (202).

4. The refrigerated range hood according to claim 3, characterized in that, The extension section (301) includes a first side (3012) and a second side (3013) connected to the bottom edge (3011) of the extension section (301). The first side (3012) and the second side (3013) are arranged sequentially along the direction from the installation side to the operation side of the refrigeration range hood. The length of the first side (3012) is d1, the length of the second side (3013) is d2, and the dimension of the flow guide baffle (3) along the depth direction of the air handling unit (201) is L1. Along the direction from the installation side to the operation side of the refrigeration range hood, the axis of the range hood fan (202) is inclined upward, and the acute angle formed between the axis of the range hood fan (202) and the vertical direction is θ1, d2<d1≤d2+L1cotθ1; and / or, Along the direction from the installation side to the operation side of the refrigeration range hood, the axis of the range hood fan (202) is inclined downward, and the obtuse angle formed between the axis of the range hood fan (202) and the vertical direction is θ1, d1<d2≤d1+L1cot(180°-θ1).

5. The refrigerated range hood according to claim 1, characterized in that, The first connecting line between the top and bottom of the section of the extension segment (301) perpendicular to the depth direction of the air handling unit (201) is the first connecting line. The angle between the first connecting line and the horizontal plane in the direction from the installation side to the operation side of the refrigeration fan is θ2, where 70°≤θ2≤150°.

6. The refrigerated range hood according to any one of claims 1 to 5, characterized in that, The air guide section (302) includes: The first guide section (3021) extends to the bottom edge (3011) of the extension section (301) at its first end. The first guide section (3021) is arranged around the outer periphery of the smoke hood fan (202). The second end of the first guide section (3021) extends to one side of the air inlet (2021) of the smoke hood fan (202). The second guide section (3022) extends from the second end of the first guide section (3021) to the side wall of the air handling unit (201).

7. The refrigerated range hood according to claim 6, characterized in that, The second guide section (3022) is inclined, and the inclination direction of the second guide section (3022) is the same as the inclination direction of the axis of the smoke fan (202).

8. The refrigerated range hood according to claim 6, characterized in that, The second guide section (3022) is a flat plate structure, and the second guide section (3022) is parallel to the axial direction of the smoke fan (202).

9. The refrigerated range hood according to claim 6, characterized in that, The second guide section (3022) is a flat plate structure and is parallel to the horizontal plane.

10. The refrigerated range hood according to claim 6, characterized in that, The air inlet (2021) of the smoke hood fan (202) includes a main air inlet (20211) and a secondary air inlet (20212). The main air inlet (20211) is disposed facing the first wall (2012) of the air handling unit (201), and one side edge of the guide baffle (3) extends to the first wall (2012) of the air handling unit (201).

11. The refrigerated range hood according to claim 10, characterized in that, The first guide section (3021) and the second guide section (3022) are split structures. The second guide section (3022) includes a rotating edge (30221), which is connected to the first wall (2012) of the air handling unit (201). The smoke hood assembly (2) also includes a rotation source, which is located inside the air handling unit (201) and has its power output end connected to the second guide section (3022), which can drive the second guide section (3022) to rotate around the rotating edge (30221).

12. The refrigerated range hood according to claim 6, characterized in that, The first guide section (3021) includes at least two guide plates (30211) connected sequentially from top to bottom, and the at least two guide plates (30211) are arranged at an included angle.

13. The refrigerated range hood according to claim 6, characterized in that, The range hood assembly (2) further includes a volute enclosure (30212), the range hood fan (202) is disposed inside the volute enclosure (30212), the bottom end of the extension section (301) extends to the volute enclosure (30212), and the first guide section (3021) is at least partially formed by the volute enclosure (30212).

14. The refrigerated range hood according to claim 13, characterized in that, The air inlet (2021) of the flue fan (202) includes a main air inlet (20211) and a secondary air inlet (20212). The main air inlet (20211) is disposed facing the first wall (2012) of the air handling unit (201). The first guide section (3021) of the fan further includes: A sealing plate (30213) is disposed between the volute enclosure plate (30212) and the first wall (2012) of the air handling unit (201). One edge of the sealing plate (30213) extends to the first wall (2012), and the other edge of the sealing plate (30213) extends to the volute enclosure plate (30212).

15. The refrigerated range hood according to claim 6, characterized in that, The second guide section (3022) is connected to the first guide section (3021). The second guide section (3022) is a flat plate structure. The maximum height difference between the top edge of the extension section (301) and the lower side plate of the second guide section (3022) is H, where 40mm ≤ H ≤ 450mm; and / or, The first guide section (3021) and the second guide section (3022) are separate structures. The second guide section (3022) includes a rotating edge (30221), which is connected to the first wall (2012) of the air handling unit (201). The smoke hood assembly (2) also includes a rotation source, which is located inside the air handling unit (201) and its power output end is connected to the second guide section (3022), which can drive the second guide section (3022) to rotate around the rotating edge (30221). The maximum height difference between the top edge of the extension section (301) and the rotating edge (30221) of the second guide section (3022) is H, where 40mm≤H≤450mm.

16. The refrigerated range hood according to any one of claims 1 to 5, characterized in that, The dimension of the flow guide baffle (3) along the depth direction of the air handling unit (201) is L1; The maximum depth of the inner cavity of the air handling unit (201) is L2, 0.5≤L1 / L2≤0.

99.

17. The refrigerated range hood according to any one of claims 1 to 5, characterized in that, The flow guide baffle (3) is provided with flow holes (303).

Images