A fresh air range hood

Abstract

A fresh air range hood includes a cavity and a fresh air component. The cavity is provided with a smoke inlet and a smoke outlet. A smoke exhaust fan is arranged in the cavity to convey oil fumes from the smoke inlet to the smoke outlet. The cavity is further provided with an installation opening, and the fresh air component is detachably arranged in the cavity through the installation opening. The fresh air component includes a fresh air fan and an installation frame. The fresh air fan is located outside the installation frame, and the air outlet of the fresh air fan is communicated with the installation frame. A partition plate for isolating the fresh air fan from the oil fumes is further arranged in the cavity, and the partition plate is joined to the inner wall of the cavity and / or the outer wall of the installation frame. Compared with the prior art according to the technical solution provided by the present invention, the following advantages are achieved: convenient for assembly and maintenance, high utilization rate of internal space, compact structure, low material cost, rapid provision of fresh air, good filtering effect, and high degree of product miniaturization.

Description

Technical Field

[0001] The invention relates to the field of range hoods, and in particular to a fresh air range hood. Background Art

[0002] As a fume exhaust device in the kitchen, the range hood plays an important role in the respiratory health of users. However, due to the relatively closed kitchen environment, once the indoor air is polluted by fume, the range hood needs to work for a long time to completely exhaust the fume, which causes the fume to stay in the kitchen environment for a long time and cannot be quickly renewed with fresh air, posing a threat to the respiratory health of users; and for kitchens that can be ventilated by opening windows, although the problem of quickly renewing fresh air is solved, it still cannot avoid the problems of crosswind affecting firepower, large heat loss in the kitchen, and poor outside air quality.

[0003] Many manufacturers have discovered the above problems and actively sought improvement solutions, thus developing range hoods with fresh air systems. For example, the Chinese utility model patent with authorization announcement number CN213777848U, entitled Range Hood, discloses: a range hood, comprising: Smoke collecting hood (100) and fresh air purification component (200) provided on the smoke collecting hood (100) ; The fresh air purification component (200) including a box body (210), a fresh air fan (220) both provided in the box body (210), and a filter element The box body (210) is provided with a first air inlet (211) and a second air inlet (212); the filter element is arranged near the first air inlet (211) and the second air inlet (212) and is used to filter the airflow entering through the first air inlet (211) and / or the second air inlet (212); the box body (210) and / or the smoke hood (100) are provided with an air outlet. Furthermore, Box body 210 is installed above the smoke collecting hood 100 However, the technical solution of the utility model has the following deficiencies: the box (210) is installed above the smoke hood 100, and the internal space of the range hood itself is not fully utilized; the fresh air fan (220) is arranged in the box (210), resulting in the box (210) being too large, which is likely to increase the material cost; the fresh air fan (220) and the filter element are both arranged in the box (210), which is also likely to result in a "straight line" arrangement structure, resulting in a single air flow direction, and failing to achieve the purpose of fully filtering the air.

[0004] For another example, the Chinese utility model patent with the authorization announcement number CN214791318U and the title of "A New Type of Range Hood" discloses: A new type of range hood, including a box body (1), an electronic control main board, an inner shell (2), an oil fume filter element (3), a flue gas shunt plate part (4), and a fan (5) arranged in the box body (1). The upper end of the box body (1) is provided with a main smoke exhaust port (11) for exhausting air to the outside and a secondary smoke exhaust port (12) for exhausting air to the room. The inner shell (2) is detachably arranged at the top inside the box body (1). A flue gas shunt cavity (21) is arranged inside the inner shell (2). The lower end of the inner shell (2) is provided with a first opening (22) for communicating the flue gas shunt cavity (21) with the fan (5). The upper end of the inner shell (2) is provided with a second opening (23) and a third opening (24). The second opening (23) corresponds to the main smoke exhaust port (11). A connecting pipe for communicating with the outside is arranged at the second opening (23). The third opening (24) is arranged corresponding to the secondary smoke exhaust port (12). A sealing arrangement is provided between the third opening (24) and the secondary smoke exhaust port (12). The oil fume filter element (3) is arranged on the third opening (24). The flue gas shunt plate part (4) is arranged inside the inner shell (2) and the flue gas shunt plate part (4) can removably close the third opening (4). The smoke exhaust port of the fan (5) is communicated with the first opening (22). Both the fan (5) and the flue gas shunt plate part (4) are connected to the electronic control main board. The technical solution of this utility model has the following deficiencies: The fan (5) cannot be isolated from the oil fume, and the inner shell is mainly used to control the direction of flue gas discharge to overcome the problem of inability to exhaust smoke due to excessive back pressure, and cannot function as a fresh air component. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a fresh air range hood that is convenient for assembly and maintenance, has high internal space utilization rate, is structurally compact, has low material cost, can quickly provide fresh air, has good filtering effect, and has a high degree of miniaturization of the product.

[0006] The present invention mainly adopts the following technical solutions:

[0007] A fresh air range hood, including a cavity and a fresh air component. The cavity is provided with a smoke inlet and a smoke outlet. A smoke exhaust fan is arranged in the cavity to convey oil fume from the smoke inlet to the smoke outlet. The cavity is also provided with an installation opening. The fresh air component is detachably arranged in the cavity through the installation opening. The fresh air component includes a fresh air fan and an installation frame. The fresh air fan is located outside the installation frame and the air outlet of the fresh air fan is communicated with the installation frame. A partition plate for isolating the fresh air fan from the oil fume is also arranged in the cavity. The partition plate is joined to the inner wall of the cavity and / or the outer wall of the installation frame.

[0008] Among them, the cavity includes a casing cavity, and the partition plate is located in the casing cavity.

[0009] Among them, the cavity further includes a smoke collecting cavity, and the partition plate is at least partially inclined and arranged in the smoke collecting cavity.

[0010] Among them, it further includes a cover plate for closing the installation opening. The installation frame adopts a frame structure with one side open, and the cover plate covers the open side of the frame structure.

[0011] Among them, the installation frame is provided with a fresh air outlet, an air filter is arranged in the installation frame, and the fresh air fan discharges the filtered air through the fresh air outlet.

[0012] Among them, the cover plate is further provided with an air inlet at a position corresponding to the installation frame. The space enclosed by the cover plate and the installation frame is separated into at least two chambers by an intermediate plate. The air inlet and the fresh air outlet are respectively located on the side walls of different chambers. The installation frame is further provided with a ventilation hole, and the ventilation hole and the air inlet are located on the side wall of the same chamber. The air entering from the air inlet is transported to the fresh air outlet by the fresh air fan through the ventilation hole.

[0013] Among them, the air filter is located in the chamber where the air inlet and / or the fresh air outlet is located.

[0014] Among them, when the air filter is located in the chamber where the air inlet is located, the air inlet and the ventilation hole are respectively arranged on both sides of the air filter.

[0015] Among them, a slot is further arranged in the installation frame, and the air filter is installed in the installation frame through the slot.

[0016] Among them, the cover plate is further provided with a replacement opening at a position corresponding to the air filter, and a replacement cover is provided on the replacement opening.

[0017] Among them, a bracket is further arranged in the cavity, and the installation frame is detachably arranged on the bracket.

[0018] Among them, a baffle is further arranged in the space on one side of the partition plate where the fresh air fan is located, and the baffle guides the air entering from the ventilation hole to the fresh air fan.

[0019] According to the above technical solution, the following beneficial effects are achieved: The fresh air component is detachably arranged in the cavity, which is beneficial to assembly and maintenance; placing the fresh air component in the cavity is more conducive to making full use of the internal structure of the range hood itself, which plays a positive role in reducing the overall volume of the "miniaturized" range hood. Moreover, the fresh air fan is located outside the installation frame. On the one hand, it can reduce the volume of the installation frame and save material costs. On the other hand, it can also change the air flow direction to make the filtration more thorough; the partition plate is at least partially inclined in the smoke collection cavity, which not only plays a role in isolating the oil fume but also can guide the oil fume. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic diagram of the overall structure of the range hood of the present invention.

[0021] Figure 2 FIG. is a schematic cross-sectional view of the interior of the cavity of the range hood of the present invention.

[0022] Figure 3 FIG. is a schematic top view looking inward from the installation opening when the fresh air component is not installed in the range hood.

[0023] Figure 4 FIG. is a schematic diagram of the fresh air component structure.

[0024] 1 Cavity, 10 Installation opening, 11 Smoke inlet, 12 Smoke outlet, 14 Partition plate, 15 Housing cavity, 16 Smoke exhaust fan, 17 Smoke collection cavity, 19 Air outlet through hole, 2 Cover plate, 27 Replacement cover, 28 Air inlet, 3 Fresh air component, 31 Installation frame, 32 Intermediate plate, 33 Slot, 34 Air filter element, 35 Ventilation hole, 36 Fresh air fan, 38 Fresh air outlet, 4 Bracket, 5 Baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] See Figures 1 to 4As shown, a fresh air range hood comprises a cavity 1 and a fresh air component 3. The cavity 1 is provided with a smoke inlet 11 and a smoke exhaust port 12. A smoke exhaust fan 16 is arranged in the cavity 1 to transport the oil smoke from the smoke inlet 11 to the smoke exhaust port 12. The cavity 1 is also provided with a mounting port 10. The fresh air component 3 is detachably arranged in the cavity 1 through the mounting port 10. The fresh air component 3 comprises a fresh air fan 36 and a mounting frame 31. The fresh air fan 36 is located outside the mounting frame 31 and the air outlet of the fresh air fan 36 is connected to the mounting frame 31. A partition plate 14 is also arranged in the cavity 1 to isolate the fresh air fan 36 from the oil smoke. The partition plate 14 is engaged with the inner wall of the cavity 1 and / or the outer wall of the mounting frame 31. In the present application, the fresh air component is detachably arranged in the cavity, which is convenient for assembly and maintenance; the fresh air component is located in the cavity, which is more conducive to making full use of the internal structure of the range hood itself, and plays a positive role in the "miniaturization" of the overall volume of the range hood, reducing the overall space occupied by the range hood. Moreover, placing the fresh air fan outside the installation frame can, on the one hand, reduce the volume of the installation frame and save material costs, and on the other hand, it can also change the "linear" flow direction of the air, so that the air can more fully contact the filter element and the filtering effect is better. Preferably, the partition plate 14 can adopt a flat plate structure that is bent or not bent, or other special-shaped structures that are conducive to the spatial layout of the cavity 1. Since one side of the partition plate 14 is clean air and the other side is oil smoke, in order to prevent leakage at the connection between the partition plate 14 and the inner wall of the cavity 1 and / or the outer wall of the installation frame 31, a sealing treatment can be performed along the connection when the fresh air component 3 is not installed.

[0027] Furthermore, the cavity 1 includes a housing cavity 15, and the partition plate 14 is located in the housing cavity 15. In some other embodiments of the present application, the range hood adopts a top suction structure, and the partition plate 14 is located in the housing cavity 15 where the smoke exhaust fan 16 is placed.

[0028] See also Figure 2 As shown, the chamber 1 also includes a smoke collecting chamber 17, and the partition plate 14 is at least partially tilted in the smoke collecting chamber 17. In the present application, the partition plate 14 is at least partially tilted, which can guide the oil smoke entering the smoke collecting chamber 17, and the oil smoke is quickly collected at the smoke exhaust fan and discharged through the smoke exhaust port. In some other embodiments of the present application, the range hood adopts a side suction structure, and the partition plate 14 is located in the housing chamber 15 and / or the smoke collecting chamber 17.

[0029] See also Figure 1 , 2, as shown in FIGS. 4, it further includes a cover plate 2 for closing the installation opening 10. The installation frame 31 has a frame structure with one side open, and the cover plate 2 is covered on the open side of the frame structure. Preferably, the size of the installation opening 10 can be smaller than or not smaller than the size of the installation frame 31 on the side facing the cover plate 2. The size of the installation opening 10 only needs to be suitable for installing the fresh air assembly 3 into the cavity 1. More preferably, the size of the installation opening 10 is not smaller than the size of the installation frame 31 on the side facing the cover plate 2.

[0030] See Figure 2 , 4 As shown, the installation frame 31 is provided with a fresh air outlet 38, and an air filter element 34 is arranged inside the installation frame 31. The fresh air fan 36 discharges the filtered air through the fresh air outlet 38. Preferably, an air outlet through hole 19 is formed on the side wall of the cavity 1, and the air outlet through hole 19 is arranged opposite to the fresh air outlet 38. The filtered air is discharged from the fresh air outlet 38 and then through the air outlet through hole 19 into the indoor environment. More preferably, in order to save material costs, a part of the side wall of the installation frame 31 can be formed as the side wall of the cavity 1. At this time, the fresh air outlet 38 is the air outlet through hole 19.

[0031] See Figure 1 , 2 As shown, the cover plate 2 is further provided with an air inlet 28 at a position corresponding to the installation frame 31. The space enclosed by the cover plate 2 and the installation frame 31 is divided into at least two chambers by a partition plate 32. The air inlet 28 and the fresh air outlet 38 are respectively located on the side walls of different chambers. The installation frame 31 is further provided with a ventilation hole 35, and the ventilation hole 35 and the air inlet 28 are located on the side wall of the same chamber. The air entering from the air inlet 28 is transported to the fresh air outlet 38 by the fresh air fan 36 through the ventilation hole 35. In this application, the ventilation hole and the air inlet are located in the same chamber and the fresh air fan is located outside the installation frame. The structural feature that the ventilation hole and the air inlet are located on the same straight line can be changed, so that the air flow direction is turned to slow down the air flow rate, and the air can fully contact with the air filter element to improve the filtering effect.

[0032] See Figure 2 , 4 As shown, the air filter element 34 is located in the chamber where the air inlet 28 and / or the fresh air outlet 38 are located.

[0033] See Figure 2 , 4 As shown, when the air filter element 34 is located in the chamber where the air inlet 28 is located, the air inlet 28 and the ventilation hole 35 are respectively arranged on both sides of the air filter element 34.

[0034] See Figure 2 , 4 As shown, a slot 33 is further arranged inside the installation frame 31, and the air filter element 34 is installed into the installation frame 31 through the slot 33.

[0035] See Figure 2 and 4 As shown, a replacement opening is also provided in the cover plate 2 at a position corresponding to the air filter element 34, and a replacement cover 27 is provided on the replacement opening.

[0036] See Figure 2 and 3 As shown, a bracket 4 is further provided in the cavity 1, and the mounting frame 31 is detachably provided on the bracket 4. Preferably, the mounting frame 31 is detachably provided on the bracket 4 through fasteners. In the present application, when the partition plate is directly joined to the outer wall of the mounting frame or the partition plate is closely adjacent to the outer wall of the mounting frame, the partition plate can be bent to adapt to the shape of the outer wall of the mounting frame. At this time, the mounting frame is also detachably provided on the support structure of the partition plate so as to support the mounting frame together with the bracket. When assembling the fresh air assembly, the assembly operation with the bracket and / or the support structure of the partition plate can be conveniently completed by using the structural feature of the opening on one side of the mounting frame.

[0037] See Figure 2 and 3 As shown, a baffle 5 is further provided in the space on one side of the partition plate 14 where the fresh air fan 36 is located. The baffle 5 guides the air entering from the ventilation hole 35 to the fresh air fan 36. In the present application, in order to prevent the air from entering through the ventilation hole and diffusing and losing before flowing to the fresh air fan, especially when the cavity further includes a smoke collecting cavity and the partition plate also extends into the smoke collecting cavity resulting in a large space span of the partition plate space, a baffle can be provided to reduce the space so that as much air as possible entering from the ventilation hole flows to the fresh air fan. Preferably, the baffle 5 can adopt a flat plate structure or other special-shaped structures that are beneficial to the spatial layout in the cavity 1. Preferably, the ratio range of the space where the fresh air fan 36 is located separated by the baffle 5 to the space where the fresh air fan 36 is located separated only by the partition plate 14 is 0.3 - 0.75.

[0038] It should be further elaborated that in order for the fresh air assembly to quickly obtain fresh air, the air inlet 28 can be connected to the air outside the kitchen or can be connected to the indoor air away from the oil fume generation area; the fresh air outlet 38 (or the air outlet through hole 19) can be close to the oil fume generation area and be set facing the user to quickly supplement fresh air and create a good breathing environment for the user.

[0039] Although the specific embodiments of the present invention have been described above, those of ordinary skill in the art can make changes thereto without departing from the spirit and principle of the present invention. The protection scope of the present invention is defined by its claims and their equivalents.

Claims

1. A fresh air range hood, comprising a cavity and a fresh air component, wherein the cavity is provided with a smoke inlet and a smoke outlet, and a smoke exhaust fan is arranged in the cavity to convey oil fumes from the smoke inlet to the smoke outlet, and is characterized in that: The cavity is also provided with an installation opening, and the fresh air assembly is detachably arranged in the cavity through the installation opening. The fresh air assembly includes a fresh air fan and an installation frame. The fresh air fan is located outside the installation frame, and the air outlet of the fresh air fan is communicated with the installation frame. A partition plate for isolating the fresh air fan from the cooking fume is also arranged in the cavity, and the partition plate is engaged with the inner wall of the cavity and / or the outer wall of the installation frame; a cover plate is further included, and the cover plate is used to close the installation opening. The installation frame adopts a frame structure with one side open, and the cover plate covers the open side of the frame structure; the installation frame is provided with a fresh air outlet, and an air filter element is arranged in the installation frame. The fresh air fan discharges the filtered air through the fresh air outlet; the cover plate is also provided with an air inlet at a position corresponding to the installation frame. The space enclosed by the cover plate and the installation frame is divided into at least two chambers by an intermediate plate. The air inlet and the fresh air outlet are respectively located on the side walls of different chambers. The installation frame is also provided with a ventilation hole, and the ventilation hole and the air inlet are located on the side wall of the same chamber. The air entering from the air inlet is conveyed to the fresh air outlet by the fresh air fan through the ventilation hole.

2. The fresh air range hood according to claim 1, characterized in that: The cavity includes a machine shell cavity, and the partition plate is located in the machine shell cavity.

3. The fresh air range hood according to claim 2, wherein: The cavity further includes a smoke collecting cavity, and the partition plate is at least partially inclined and arranged in the smoke collecting cavity.

4. The fresh air range hood according to claim 1, characterized in that: The air filter element is located in the chamber where the air inlet and / or the fresh air outlet is located.

5. The fresh air range hood according to claim 4, wherein: When the air filter element is located in the chamber where the air inlet is located, the air inlet and the ventilation hole are respectively arranged on both sides of the air filter element.

6. The fresh air range hood according to claim 1, wherein: A slot is further arranged in the installation frame, and the air filter element is installed in the installation frame through the slot.

7. The fresh air range hood according to claim 6, wherein: The cover plate is also provided with a replacement opening at a position corresponding to the air filter element, and a replacement cover is covered on the replacement opening.

8. The fresh air range hood according to claim 1, wherein: A bracket is also arranged in the cavity, and the installation frame is detachably arranged on the bracket.

9. The fresh air range hood according to claim 1, characterized in that: A baffle is also arranged in the space on one side of the partition plate where the fresh air fan is located, and the baffle guides the air entering from the ventilation hole to the fresh air fan.

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