Range hood

Abstract

The present invention provides a range hood, which relates to the technical field of oil fume exhaust, and aims to alleviate the technical problem that the range hood provided with multiple fans in the prior art leads to a large overall size. The range hood comprises a casing, wherein multiple fans are provided in the casing, and the air outlets of the multiple fans are arranged in parallel along the front-rear direction of the range hood; a check valve is provided at the air outlet, and the multiple air outlets arranged in parallel are all connected to the check valve.

Description

Technical Field

[0001] The invention relates to the technical field of oil fume exhaust, and in particular to a range hood. Background Art

[0002] One of the appliances currently on the market for extracting kitchen fumes is the range hood. Among them, traditional range hoods are mainly divided into upward suction range hoods and side suction range hoods. Traditional range hoods are generally installed above the stove. When cooking, the fumes flow upward into the negative pressure area formed by the range hood, and then are discharged to the outside through the range hood.

[0003] Among them, the traditional structure of the upward suction range hood is relatively far away from the cooker due to its installation height, which makes the oil fume extraction effect less than ideal and is easy to hit the head during use; and the negative pressure area of ​​the side suction range hood is closer to the cooker than the upward suction range hood, but the existing side suction range hood has a poor extraction effect.

[0004] In order to solve the problem of poor exhaust effect, some side-suction range hoods have multiple fans arranged side by side in the left and right directions, which obviously increases the overall size of the range hood. Summary of the invention

[0005] The object of the present invention is to provide a range hood to alleviate the technical problem in the prior art that a range hood is provided with a plurality of fans, resulting in a larger overall size.

[0006] The range hood provided by the present invention comprises: a casing, wherein a plurality of fans are arranged in the casing, and the air outlets of the plurality of fans are arranged in parallel along the front-rear direction of the range hood; a check valve is provided at the air outlet, and the plurality of air outlets arranged in parallel are all connected to the check valve.

[0007] Furthermore, the number of the fans is two, and the two fans are symmetrically arranged along the left-right direction of the range hood, and staggered along the front-back direction of the range hood.

[0008] The air outlets of the two fans are arranged adjacent to each other along the front-rear direction of the range hood, and the two air outlets share one check valve.

[0009] Furthermore, the air inlets of the two fans are arranged back to back, wherein the air inlet of one of the fans is opposite to the rear side surface of the casing, and there is a space between the air inlet and the front side surface.

[0010] The air inlet of the other fan is opposite to the front side of the casing, and there is a space between the air inlet and the rear side.

[0011] Furthermore, the range hood is a wall-mounted range hood.

[0012] Furthermore, the housing includes a body and a smoke collecting body which are integrally arranged, and an air duct for smoke flow is formed between the body and the smoke collecting body.

[0013] The fan is arranged in the main body of the machine.

[0014] The smoke collecting body comprises an air duct inlet, and the air duct inlet is communicated with the air duct, so that cooking smoke enters the air duct through the air duct inlet and is discharged through the fan.

[0015] Furthermore, the rear side of the smoke collecting body is coplanar with the rear side of the fuselage body, and the front side of the smoke collecting body is recessed rearward relative to the front side of the fuselage body, so that the accommodating space forms a space with an inverted "L"-shaped cross-section.

[0016] Furthermore, the thickness of the fuselage body ranges from 160 to 220 mm.

[0017] Furthermore, a smoke baffle is provided at the inlet of the air duct, and the smoke baffle is rotatably connected to the smoke collecting body to open or close the inlet of the air duct.

[0018] When the smoke baffle is in an open state, a smoke collecting area can be formed between the smoke baffle and the smoke collecting body.

[0019] Furthermore, a filter screen cover is provided in the accommodating space and near the air duct inlet, and the filter screen cover is tilted downward from front to back.

[0020] An oil cup is provided at the bottom of the smoke collecting body, and the oil on the filter screen cover can drip into the oil cup.

[0021] Furthermore, a smoke guide plate is provided in the air duct, and the smoke guide plate is located below the filter mesh cover. A smoke guide area is formed between the smoke guide plate, the filter mesh cover and the side wall of the smoke collecting body. The opening of the smoke guide area faces the air duct inlet and is gradually enlarged in the direction approaching the air duct inlet.

[0022] Beneficial effects:

[0023] When the range hood provided by the present invention is in operation, under the action of the multiple fans, the oil smoke generated by cooking enters the interior of the casing and is discharged through the check valve. Since the fans are provided in plurality, the range hood can relatively improve the suction effect compared with the prior art in which only one fan is provided. Furthermore, since the air outlets of the multiple fans of the range hood are provided in parallel along the front-rear direction of the range hood, it is possible to have overlapping parts between the multiple fans to a certain extent. This arrangement can make the layout inside the casing more compact and relatively reduce the lateral size of the casing. On the other hand, On the one hand, under this structure, the air outlets of multiple fans are all connected to the check valve, that is, the air outlets of multiple fans share one check valve. Compared with the prior art in which multiple fans are arranged side by side and the air outlets are arranged side by side, this arrangement can make the superposition of the areas of the air outlets of each fan consistent with the area at the check valve, so as to reduce or even avoid the resistance loss caused by the sudden change in area when the oil smoke flows through the check valve, thereby facilitating the discharge of the oil smoke; from the foregoing, it can be seen that the present range hood can achieve the use effect of large air volume and high air pressure, and further improve the smoke extraction effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a first structure of a range hood provided by an embodiment of the present invention, wherein the smoke baffle is in an open state;

[0026] Figure 2 A schematic diagram of a first structure of a range hood provided by an embodiment of the present invention, wherein part of the plate body is not shown;

[0027] Figure 3 for Figure 2 The main view;

[0028] Figure 4 A right side view showing the internal structure of the range hood provided by an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the range hood and the gas stove;

[0030] Figure 6 This is a second structural schematic diagram of a range hood provided in an embodiment of the present invention, wherein part of the plate is not shown.

[0031] icon:

[0032] 100-fuselage body;

[0033] 200-smoke collector body; 210-air duct inlet;

[0034] 300- fan; 400- check valve; 500- smoke baffle; 600- filter cover; 700- oil cup; 800- smoke guide plate; 900- gas stove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example

[0037] This embodiment provides a range hood, such as Figures 1 to 3 As shown, the range hood comprises: a casing, in which a plurality of fans 300 are arranged, and the air outlets of the plurality of fans 300 are arranged in parallel along the front-to-back direction of the range hood; a check valve 400 is provided at the air outlet, and the plurality of air outlets arranged in parallel are all connected to the check valve 400.

[0038] When the range hood provided in the present embodiment is in operation, under the action of the multiple fans 300, the oil smoke generated by cooking enters the interior of the casing and is discharged through the check valve 400. Since the fans 300 are provided in plurality, the range hood can relatively improve the suction effect compared with only one fan 300 in the prior art. Furthermore, since the air outlets of the multiple fans 300 of the range hood are provided in parallel along the front-rear direction of the range hood, there can be a cross-over and overlapped portion between the multiple fans 300 to a certain extent. This arrangement can make the layout inside the casing more compact and relatively reduce the lateral size of the casing. On the other hand, On the one hand, under this structure, the air outlets of multiple fans 300 are all connected to the check valve, that is, the air outlets of multiple fans 300 share one check valve 400. Compared with the prior art in which multiple fans 300 are arranged side by side and the air outlets are arranged side by side, this arrangement can make the superposition of the areas of the air outlets of each fan 300 consistent with the area of ​​the check valve 400, so as to reduce or even avoid the resistance loss caused by the sudden change in area when the oil smoke flows through the check valve 400, thereby facilitating the discharge of the oil smoke; from the foregoing, it can be seen that the present range hood can achieve the use effect of large air volume and high air pressure, and further improve the smoke extraction effect of the range hood.

[0039] Specifically, two fans 300 are provided, the two fans 300 are symmetrically arranged along the left and right directions of the range hood, and are staggered along the front and back directions of the range hood; the air outlets of the two fans 300 are adjacently arranged along the front and back directions of the range hood, and the two air outlets share a check valve 400.

[0040] In this embodiment, if Figure 2 or Figure 3 As shown, the air inlets of the two fans 300 are arranged opposite to each other, the air inlet of one fan 300 is opposite to the rear side of the housing, and there is a space between the air inlet and the front side; the air inlet of the other fan 300 is opposite to the front side of the housing, and there is a space between the air inlet and the rear side, that is, the air inlet of one fan 300 is at the front side of the range hood, and the air inlet of the other fan 300 is at the rear side of the range hood. The advantage of this arrangement is that the same two fans 300 can be used, and there is no need to distinguish the direction of rotation of the impeller and the motor in the fan 300.

[0041] It should be noted that, considering the overall size of the range hood and the fact that it is mostly used in home kitchens, it is preferred to set the number of fans 300 to two, and the two fans 300 are of the same type, that is, both are volute centrifugal fans. The advantage of this setting is that it can ensure that the output pressures of the two fans 300 are equal and the air volumes are the same. The final air volume of the range hood is the superposition of the two fans 300, avoiding interference due to different types of fans 300.

[0042] In this embodiment, if Figure 1 , Figure 2 or Figure 3 As shown, the range hood is a wall-mounted range hood.

[0043] The range hood provided in this embodiment may have the following structural forms.

[0044] (1) The first structural form of range hood

[0045] Combination Figure 1 and Figure 2 Specifically, the casing includes a body body 100 and a smoke collecting body 200 which are integrally arranged, and an air duct for smoke flow is formed in the body body 100 and the smoke collecting body 200; the fan 300 is arranged in the body body 100; the smoke collecting body 200 includes an air duct inlet 210, and the air duct inlet 210 is connected to the air duct, so that cooking smoke enters the air duct through the air duct inlet 210 and is discharged through the fan 300.

[0046] It should be noted that if Figure 1 As shown, the upper portion with a larger thickness dimension can be regarded as the fuselage body 100 , and the lower portion with a smaller thickness dimension can be regarded as the smoke collecting body 200 .

[0047] like Figure 1 or Figure 2 As shown, the thickness of the main body 100 is greater than the thickness of the smoke collecting body 200, so as to realize the side-by-side installation of multiple fans 300 on the basis of reducing the overall size of the range hood.

[0048] Specifically, Figure 1 , Figure 2 or Figure 4 As shown, the rear side of the smoke collecting body 200 is coplanar with the rear side of the fuselage body 100, and the front side of the smoke collecting body 200 is recessed backward relative to the front side of the fuselage body 100, so that the accommodating space forms a space with an inverted "L"-shaped cross-section.

[0049] It should be noted that the “front side” mentioned above refers to the side facing the stove or the user, and the rear side refers to the side facing away from the stove or the user.

[0050] In this embodiment, the thickness of the fuselage body 100 ranges from 160 to 220 mm. Figure 4 As shown in the dimension P, this arrangement can free up the space above the gas stove 900, maximizing the utilization of the kitchen space.

[0051] In this embodiment, if Figure 1 and Figure 4 As shown, a smoke baffle 500 is provided at the air duct inlet 210 , wherein the smoke baffle 500 is rotatably connected to the smoke collecting body 200 for opening or closing the air duct inlet 210 ; when the smoke baffle 500 is in an open state, a smoke collecting area can be formed between the smoke baffle 500 and the smoke collecting body 200 .

[0052] When the range hood is in operation, the oil smoke flows upward under the action of the fan 300 and reaches the smoke collecting area. At the same time, it enters the air duct inlet 210 under the smoke collecting and guiding action of the smoke baffle 500. This arrangement can prevent the oil smoke from rushing out of the negative pressure area and diffusing out when it is large, and plays a role in preventing the oil smoke from escaping when a large amount of oil smoke is generated. At the same time, closing the smoke baffle 500 after use can also ensure that the range hood has no odor contamination.

[0053] It should be noted that the smoke damper 500 can be set to an automatic opening and closing design, that is, after the range hood stops working, the smoke damper 500 automatically closes, and when the range hood starts working, the smoke damper 500 automatically opens. Among them, the design of the automatic opening or closing of the smoke damper 500 can refer to the design in the prior art, which is not difficult for technicians in this field to learn about this technology. Alternatively, the smoke damper 500 is set to a structure for manually controlling the opening and closing. Similarly, this structural setting can refer to the design in the prior art and will not be described in detail here.

[0054] like Figure 4As shown, a filter screen cover 600 is provided in the accommodation space and near the air duct inlet 210, and the filter screen cover 600 is tilted; an oil cup 700 is provided at the bottom of the smoke collector body 200, and the oil on the filter screen cover 600 can drip into the oil cup 700. The filter screen cover 600 plays a role in filtering oil smoke, and at the same time, the oil droplets on the filter screen cover 600 drip into the oil cup 700 under the action of gravity, which is used to collect the oil droplets in the oil smoke.

[0055] Please continue to refer to Figure 4 A smoke guide plate 800 is provided in the air duct, and the smoke guide plate 800 is located below the filter screen cover 600. A smoke guide area is formed between the smoke guide plate 800, the filter screen cover 600 and the side wall of the smoke collecting body 200. The opening of the smoke guide area faces the air duct inlet 210 and is gradually enlarged in the direction close to the air duct inlet 210.

[0056] Among them, the enlarged opening setting of the smoke guide area can facilitate the entry of more oil smoke; at the same time, after the oil smoke enters from the air duct inlet 210, the setting of the smoke guide plate 800 plays a role in guiding the oil smoke upward, so that the oil smoke moves upward faster, thereby improving the originally disordered movement direction of the oil smoke, and relatively improving the smoke extraction effect of the range hood.

[0057] The working process of the range hood is:

[0058] During operation, negative pressure is generated at the air duct inlet 210, and the oil smoke generated by cooking is sucked into the accommodation space. The originally disordered movement direction of the oil smoke is improved through the smoke guide plate 800, so that the oil smoke then moves upward, passes through the filter cover 600 to the multiple fans 300, and is accelerated by the multiple fans 300 connected in parallel, and is discharged after passing through the check valve 400.

[0059] In this embodiment, Figure 5 The diagram shows the structure of the range hood and the gas stove 900 in the installed state. Figure 5 It can be seen that in this range hood, the space above the gas stove 900 is relatively ample, so that the space above the gas stove 900 can be fully utilized; and, this structure makes the air duct inlet 210 closer to the countertop of the gas stove 900, and the negative pressure zone completely covers the area where oil smoke is generated during cooking, preventing the oil smoke from escaping, and having a good suction effect.

[0060] (2) The second structural form of the range hood

[0061] The range hood of this structural form is different from the range hood of the first structural form mentioned above in that the overall structures and the positions of the air inlets are different.

[0062] In the second structural form of the range hood, the Figure 1 and Figure 6The body 100 and the smoke collecting body 200 are integrated into one body, which is called the range hood body. The air duct inlet 210 is arranged on the front plate of the range hood body, and part of the air duct inlet 210 is located below the fan 300. The height dimension H of the range hood body is in the range of 300 to 700 mm.

[0063] This arrangement enables the range hood to omit the smoke hood part of the existing side-suction range hood, realizes the integration of the existing range hood part (the part for installing the fan) and the existing smoke hood part, and makes the overall structure of the side-suction range hood relatively compact; through the above structural arrangement, the height dimension H of the range hood body is controlled to the maximum extent between 300 and 700 mm, which greatly reduces the size of the range hood body, especially the height dimension H of the range hood body, thereby effectively reducing the overall volume of the range hood.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: include: A casing, wherein a plurality of fans (300) are arranged in the casing, and the air outlets of the plurality of fans are arranged in parallel along the front-rear direction of the range hood; A check valve (400) is provided at the air outlet, and the plurality of air outlets arranged in parallel are all in communication with the check valve (400); The number of the fans (300) is two, and the two fans (300) are symmetrically arranged along the left-right direction of the range hood, and staggered along the front-back direction of the range hood; The air outlets of the two fans (300) are arranged adjacent to each other along the front-rear direction of the range hood, and the two air outlets share one check valve (400), and the areas of the air outlets of the two fans (300) are combined to be consistent with the area of ​​the check valve (400); The air inlets of the two fans (300) are arranged back to back, wherein the air inlet of one of the fans (300) is opposite to the rear side of the casing, and there is a space between the air inlet and the front side; the air inlet of the other fan (300) is opposite to the front side of the casing, and there is a space between the air inlet and the rear side.

2. The range hood according to claim 1, characterized in that: The range hood is a wall-suction range hood.

3. The range hood according to claim 2, characterized in that: The housing comprises a body (100) and a smoke collecting body (200) which are arranged in one piece, and an air duct for smoke flow is formed in the body (100) and the smoke collecting body (200); The fan (300) is arranged in the fuselage body (100); The smoke collecting body (200) comprises an air duct inlet (210), and the air duct inlet (210) is connected to the air duct, so that cooking smoke enters the air duct through the air duct inlet (210) and is discharged through the fan (300).

4. The range hood according to claim 3, characterized in that: The rear side surface of the smoke collecting body (200) is coplanar with the rear side surface of the fuselage body (100), and the front side surface of the smoke collecting body (200) is recessed rearward relative to the front side surface of the fuselage body (100), so that the air duct forms a space with an inverted "L"-shaped cross section.

5. The range hood according to claim 4, characterized in that: The thickness of the fuselage body (100) ranges from 160 to 220 mm.

6. The range hood according to claim 3, characterized in that: A smoke baffle (500) is provided at the air duct inlet (210), and the smoke baffle (500) is rotatably connected to the smoke collecting body (200) and is used to open or close the air duct inlet (210); When the smoke baffle (500) is in an open state, a smoke collecting area can be formed between the smoke baffle (500) and the smoke collecting body (200).

7. The range hood according to claim 6, characterized in that: A filter screen cover (600) is provided in the air duct and near the air duct inlet (210), and the filter screen cover (600) is arranged to be tilted downward from front to back; An oil cup (700) is provided at the bottom of the smoke collecting body (200), and the oil on the filter screen cover (600) can drip into the oil cup (700).

8. The range hood according to claim 7, characterized in that: A smoke guide plate (800) is provided in the air duct, and the smoke guide plate (800) is located below the filter screen cover (600). A smoke guide area is formed between the smoke guide plate (800), the filter screen cover (600) and the side wall of the smoke collecting body (200). The opening of the smoke guide area faces the air duct inlet (210) and is gradually enlarged in a direction close to the air duct inlet (210).

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