Range hood

Abstract

The utility model discloses a range hood which comprises a smoke collecting hood, an air inlet is formed in the smoke collecting hood, the range hood further comprises a smoke barrier capable of turning over to open or close the air inlet, and when the smoke barrier is in an open state, a gap is formed between the upper end of the smoke barrier and the smoke collecting hood. The range hood further comprises an air outlet piece arranged on the inner side of the exhaust fume collecting hood, the air outlet piece comprises an outlet capable of blowing air to the gap and the end of the front side of the air inlet to form an air curtain, and an opening corresponding to the outlet is formed in the bottom of the exhaust fume collecting hood. Compared with the prior art, the range hood has the advantages that the air outlet piece is arranged, and an air curtain is formed between the end part of the front side of the air inlet and the gap of the smoke barrier, so that the diffusion direction of uprush oil smoke is changed, the buffer time is prolonged, the oil smoke is favorably diffused and sucked into the range hood from one side of the air inlet, and the problem of smoke leakage of the gap of the smoke barrier of the range hood is solved.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to an oil fume extractor. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly remove waste from stove combustion and fumes generated during cooking and discharge them outdoors, reduce pollution, and purify the air. In order to better absorb fumes and prevent them from escaping, a deflectable smoke shield is usually provided at the air inlet position of the air inlet panel of an existing range hood. When the smoke shield is closed, it can completely cover the air inlet of the air inlet panel. When the smoke shield is opened at a certain angle, a triangular smoke-collecting area is formed between the bottom of the smoke shield and the air inlet panel.

[0003] For example, a range hood disclosed in Chinese utility model patent application number 202322368650.9 includes a casing and a smoke baffle, the casing is provided with a first air inlet, the smoke baffle is connected to the casing in a rotational and / or translational manner relative to the casing, and can open and close the first air inlet.

[0004] The smoke baffle of the above patent needs to be opened or closed flexibly, so a certain gap is generally left between the upper end of the smoke baffle and the smoke hood during design. Otherwise, the smoke baffle is easy to collide with the smoke hood when it is opened or closed, causing malfunctions. When food is put into the pot, especially when food with water comes into contact with high-temperature oil, a large amount of oil smoke is concentrated and rises instantly. The suction force of the range hood is not enough to instantly suck the oil smoke into the range hood. At this time, some oil smoke will overflow from the gap between the smoke baffle and the smoke hood, causing smoke leakage and affecting user experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood for the above-mentioned deficiencies in the prior art, which can effectively block the gap between the smoke shield and the smoke collecting hood after the smoke shield is opened, thereby preventing smoke from escaping from the gap.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a range hood, including a smoke hood, an air inlet is opened on the smoke hood, and the range hood also includes a smoke baffle that can be flipped to open or close the air inlet, when the smoke baffle is in an open state, a gap is formed between the upper end of the smoke baffle and the smoke hood, and the gap is located in front of the front end of the air inlet, and it is characterized in that: the range hood also includes an air outlet member arranged on the inner side of the smoke hood, the air outlet member includes an outlet that can blow air between the gap and the front end of the air inlet to form a wind curtain, and the bottom of the smoke hood is formed with an opening corresponding to the outlet.

[0007] By arranging an air outlet piece, an air curtain is formed between the front end of the air inlet and the gap of the smoke shield, so that the upward-rushing oil smoke changes its diffusion direction, increases the buffer time, and is conducive to diffusing and sucking the oil smoke into the range hood from one side of the air inlet, thereby solving the problem of smoke leakage from the gap of the smoke shield of the range hood.

[0008] Furthermore, the air outlet member includes a hollow shell, a guide cavity is formed in the shell, the outlet is formed on the bottom surface of the rear end of the shell, and an inlet for air flow is also formed on the front end of the shell. The width of the shell gradually increases from front to back to expand the air outlet range.

[0009] Further, the outlets have at least two evenly spaced apart arrangements along the left-right direction so as to cover the length of the gap.

[0010] Furthermore, a partition is provided in the shell, and the partition has at least two partitions arranged at intervals on the left and right, and the distance between two adjacent partitions gradually increases from front to back, so that the partition can play a role in guiding the airflow entering the inlet to the outlet area evenly, avoiding no wind or weak wind on the left and right sides of the outlet.

[0011] Preferably, there are two partitions, and the two partitions extend obliquely from front to back in directions gradually away from each other, with the rear end of the partition on the left side close to the left end of the rear end of the shell, and the rear end of the partition on the right side close to the right end of the rear end of the shell.

[0012] Furthermore, at least a portion of the upper side wall of the housing is formed with a guide wall, and the guide wall gradually slopes downward from front to back, thereby guiding the airflow at the inlet to the outlet at the bottom, reducing wind pressure loss.

[0013] Furthermore, the air outlet piece also includes an inlet for air flow to flow in, and the range hood also includes a fan system and an air outlet hood arranged at the air outlet of the fan system. The air outlet hood and the inlet of the air outlet piece are directly or indirectly connected via a duct to achieve fluid communication, thereby utilizing the waste exhaust air of the range hood itself, and there is no need to additionally set up an air supply mechanism. When the range hood produces a lot of oily smoke during operation, as the gear of the range hood fan increases (adjusted to a strong gear or a higher gear by the user), the air volume passing through the air outlet hood increases accordingly, thereby achieving the function of automatically adjusting the blowing air volume.

[0014] Furthermore, the range hood also includes a diverter hood that penetrates into the air outlet hood, the bottom of the diverter hood located inside the air outlet hood is open to form a diverter port, and the part of the diverter hood located outside the air outlet hood is formed with an air outlet, the duct is connected between the air outlet and the inlet of the air outlet member, and the diverter hood is provided to divert the air volume so as to obtain the airflow of the air outlet hood, and it is also convenient to change the wind pressure through the design of the diverter hood.

[0015] Furthermore, a pressurized chamber is formed inside the part of the diverter hood located outside the air outlet hood, and the pressurized chamber is conical. The diameter of the pressurized chamber gradually decreases from the wall surface of the air outlet hood toward the direction away from the air outlet hood. The air outlet is located at the most downstream of the pressurized chamber, thereby enabling the air outlet of the diverter hood to discharge an airflow with a certain wind pressure so that the air outlet piece can blow air better.

[0016] Furthermore, the range hood also includes a fan rack arranged on the smoke collecting hood, the fan system is arranged in the fan rack, the air outlet hood is located on the top of the fan rack, an electrical box body is arranged on the top of the fan rack, a notch is opened in the electrical box body, a fan cover is arranged on the front side of the fan rack, a groove is formed between the fan rack and the fan cover, the duct passes through the notch of the electrical box body, the electrical box body, and the groove at the connection with the air outlet hood and enters the smoke collecting hood to be connected with the air outlet part, thereby the duct utilizes the original groove between the fan rack and the fan cover to accommodate the arrangement, is located outside the oil circuit of the range hood, and ensures reliability.

[0017] Compared with the prior art, the advantages of the utility model are: by setting an air outlet piece, an air curtain is formed between the front end of the air inlet and the gap of the smoke shield, so that the upward-rushing oil smoke changes its diffusion direction, increases the buffer time, and is conducive to diffusing and sucking the oil smoke from one side of the air inlet into the range hood, thereby solving the problem of smoke escaping from the gap of the smoke shield of the range hood; the air outlet hood and the air outlet piece are connected, thereby utilizing the waste exhaust air volume of the range hood itself, and there is no need to additionally set up an air supply mechanism. When the oil smoke of the range hood is large, as the gear of the range hood fan increases (the user adjusts it to a strong gear or a higher gear), the air volume passing through the air outlet hood increases accordingly, thereby realizing the function of automatically adjusting the blowing air volume; a diverter hood is set to divert the air volume so as to obtain the airflow of the air outlet hood, and it is also convenient to change the wind pressure through the design of the diverter hood; the duct connecting the air outlet pipe and the air outlet piece utilizes the original groove between the fan frame and the fan cover to accommodate the arrangement, and is located outside the oil circuit of the range hood to ensure reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a range hood according to an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of a range hood according to an embodiment of the utility model (with Figure 1 different perspectives);

[0020] Figure 3 A schematic diagram of a range hood according to an embodiment of the utility model (with Figure 1 different perspectives);

[0021] Figure 4 A schematic diagram of a hidden electrical box of a range hood according to an embodiment of the utility model;

[0022] Figure 5 A side view of a range hood according to an embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional side view of a range hood according to an embodiment of the utility model;

[0024] Figure 7 for Figure 6 An enlarged view of a local part I;

[0025] Figure 8 A schematic diagram of an air outlet strip of a range hood according to an embodiment of the utility model;

[0026] Fig. 9 A cross-sectional view of an air outlet strip of a range hood according to an embodiment of the utility model;

[0027] Fig.10 A top view of the air outlet cover of the range hood according to an embodiment of the utility model;

[0028] Fig.11 A cross-sectional view of an air outlet cover of a range hood according to an embodiment of the utility model;

[0029] Fig.12 It is a schematic diagram of a panel assembly of a range hood according to an embodiment of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] See also Figure 1 to Figure 3 , Figure 5A range hood includes a smoke collecting hood 1, the bottom of which may be gradually inclined downward from front to back or not inclined, an air inlet 11 is provided at the bottom of the smoke collecting hood 1, and a filter 12 is provided at the air inlet 11. The range hood also includes a smoke baffle 2 that can be flipped to open or close the air inlet 11.

[0033] The range hood can be in the form of side suction, top suction, top suction and side suction integrated, etc., and there is no limitation on the form, as long as a smoke baffle 2 can be provided to open and close the air inlet 11. In this embodiment, it is a top suction and side suction integrated type, a fan frame 3 is provided on the smoke hood 1, a fan system 4 is provided in the fan frame 3, and an air outlet hood 5 is provided at the air outlet of the fan system 4, and the air outlet hood 5 is located on the top of the fan frame 3.

[0034] When the smoke baffle 2 is opened, a gap Q is formed between its upper end and the bottom of the smoke hood 1. In the present embodiment, a panel assembly 6 is further provided at the bottom of the smoke hood 1. The panel assembly 6 includes a panel 61 and a panel bracket 62 provided on the side of the panel 61 facing the inside of the smoke hood 1. The air inlet 11 is located on the rear side of the panel assembly 6. The gap Q is formed between the panel 61 and the smoke baffle 2.

[0035] The bottom of the smoke hood 1 is located in front of the air inlet 11 and is formed with an opening 13. In this embodiment, there are at least two openings 13 arranged at intervals in the left-right direction, and preferably arranged evenly. When the smoke baffle 2 is opened, the opening 13 is located behind the above-mentioned gap Q. Fig.12 The opening 13 may preferably be opened on the panel bracket 62 , and the opening 13 is located at the rear side of the rear end portion of the panel 61 so that the opening 13 is exposed from the panel 61 .

[0036] See also Figure 6 , Figure 7 to Figure 9An air outlet member 7 is arranged on the inner side of the smoke hood 1. The air outlet member 7 is a hollow structure, and the overall shape can be a shape in which the width gradually decreases from the back to the front. Here, the width refers to the size in the left-right direction. The air outlet member 7 is roughly placed on the back of the panel assembly 6, and the panel assembly 6 is exposed at least at the rear end. The air outlet member 7 includes a hollow shell 71, and the shell 71 is in a shape in which the width gradually increases from the front to the back. An inlet 72 is formed at the front end of the shell 71, and an outlet 73 is formed on the bottom surface of the rear end of the shell 71. The outlet 73 is opposite to the above-mentioned opening 13, and has at least two arranged at intervals in the left-right direction, and is preferably evenly arranged, so that the air outlet of the air outlet member 7 is as uniform and dense as possible along the length direction of the gap Q. The part of the shell 71 located between the inlet 72 and the outlet 73 constitutes a guide cavity 74, and the airflow entering from the inlet 72 is obliquely guided to the outlet 73 along the left and right sides. A partition 75 is provided in the outer shell 71, and there are at least two partitions 75 arranged at intervals on the left and right. The distance between two adjacent partitions 75 gradually increases from front to back. In the present embodiment, there are two partitions 75, and the two partitions 75 extend obliquely from front to back in a direction gradually away from each other. Preferably, the rear end of the partition 75 on the left is close to the left end of the rear end of the outer shell 71, and the rear end of the partition 75 on the right is close to the right end of the rear end of the outer shell 71. Thus, the partition 75 can play a role in guiding the airflow entering the inlet 72, so that the airflow entering the inlet 72 is evenly guided to the outlet 73 area, avoiding no wind or weak wind on the left and right sides of the outlet 73.

[0037] At least a portion of the upper side wall of the housing 71 gradually slopes downward from front to rear to form a guide wall 711. Figure 6 and Figure 7 As shown, the guide wall 711 is formed on the upper side wall of the housing 71 near the rear end, and is located above the outlet 73. Thus, the airflow of the inlet 72 can be guided to the outlet 73 at the bottom, reducing the wind pressure loss.

[0038] The housing 71 may be convex at the position where the outlet 73 is provided, and protrude from the panel bracket 62 through the opening 13 on the panel bracket 62. The outlet 73 is located at the front side of the filter 12 and at the rear side of the panel 61, so it will not affect the daily disassembly and assembly of the filter 12 and the appearance of the whole machine.

[0039] The airflow of the air outlet 7 can be blown in by an independent fan, or the oil smoke sucked in by the range hood itself can be used as the airflow source as shown in this embodiment. Figure 3 , Figure 4 , Fig.10 , Fig.11The range hood further comprises a flow divider 8, which penetrates into the air outlet hood 5 from the side of the air outlet hood 5. The bottom of the portion of the flow divider 8 located in the air outlet hood 5 is open to form a flow divider 81, so that part of the airflow entering the air outlet hood 5 can enter the inside of the flow divider 8 through the flow divider 81. The length of the portion of the flow divider 8 located in the air outlet hood 5 is L (the dimension in the front-to-back direction), and L should be as large as possible, so as to facilitate more airflow to enter the flow divider 8.

[0040] A pressurized chamber 82 is formed in the portion of the diverter hood 8 located outside the air outlet hood 5. The pressurized chamber 82 is conical, and its diameter gradually decreases from the wall surface of the air outlet hood 5 toward the direction away from the air outlet hood 5. The diverter hood 8 forms an air outlet 83 at the end farthest from the air outlet hood 5. The air outlet 83 is located at the downstream of the pressurized chamber 82, so that the airflow entering the large-opening diverter hood 8 becomes smaller as the taper of the pressurized chamber 82 decreases, and the air volume reaching the air outlet 83 has a certain wind pressure.

[0041] See also Figure 3 and Figure 4 A control panel 91 is provided on the top of the fan rack 3, and an electrical box body 92 is provided outside the control panel 91 to ensure electrical safety. A notch 921 is provided on the front side of the electrical box body 92. A fan cover 10 is provided on the front side of the fan rack 3, and a bend is provided at the position adjacent to the fan rack 3 and the electrical box body 92, so as to form a groove 101 between the bend position and the fan cover 10 (the fan cover 10 usually has flanges on the left and right sides for easy fixation with the fan rack 3, and the groove 101 is formed between the flanges of the fan rack 3 and the fan cover 10, which is the prior art) to accommodate wires to electrically connect the lighting device, switch, motion mechanism, etc. provided on the smoke hood 1 to the control panel 91. In the present embodiment, a duct 100 (only in Figure 3 and Figure 4 The part shown in Figure 4 The blocked part is shown by dotted lines), one end of the duct 100 is connected to the air outlet 83 of the splitter hood 8, and then enters the electrical box body 92 from the notch 921 of the electrical box body 92, and passes through the electrical box body 92 again (in the same way as the existing wires) and enters the groove 101, until it extends downward into the smoke hood 1, and is connected to the inlet 72 of the air outlet member 7, so that the air outlet hood 5 and the air outlet member 7 are fluidically connected. Alternatively, the air outlet hood 5 and the air outlet member 7 can also be directly connected through the duct 100.

[0042] When the range hood is turned on, the airflow from the air hood 5 enters the air outlet 7 through the duct 100, and the outlet 73 of the air outlet 7 continues to blow air outward. When food is just put into the pot or fried, oil smoke rushes upward. Figure 7As shown by the arrow B in the figure, the upward-rushing oil smoke hits the wind blown out of the outlet 73 of the air outlet member 7, and diffuses to the rear side after encountering resistance. The rear side is the air inlet 11 of the range hood, and the negative pressure is relatively large. The upward-rushing oil smoke will be sucked into the air inlet 11, and the wind blown out of the air outlet member 73 is diagonally downward, see Figure 7 As shown by arrow A in the figure, the oil smoke contained in the blown wind is also sucked back into the range hood.

[0043] In this way, by utilizing the air volume that is wasted by the range hood itself and connecting it to the air outlet 7 through the duct 100, the outlet 73 of the air outlet 7 is evenly arranged on the rear side of the gap Q of the smoke baffle 2. By discharging the air obliquely downward, the upward-rushing oil smoke changes its diffusion direction and diffuses toward the side that is convenient for the air inlet 11 of the range hood to inhale, thereby solving the problem of smoke leakage from the gap of the smoke baffle of the range hood. The air blowing only needs to cover the gap Q, and the required wind force is small, and the energy consumption is low. In addition, this method does not require the setting of a new fan to supply air to the air outlet and an independently set control method, but utilizes the exhaust gas discharged by the range hood itself, which is low in cost. When the amount of oil smoke is large, as the gear of the range hood fan increases, the air volume passing through the air outlet hood 5 increases accordingly, and the air volume that enters the diversion hood 8 and is finally blown out naturally increases, realizing the function of automatically adjusting the air volume.

[0044] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A range hood, comprising a smoke collecting hood (1), wherein the smoke collecting hood (1) is provided with an air inlet (11), and the range hood further comprises a smoke baffle (2) capable of flipping over to open or close the air inlet (11), wherein when the smoke baffle (2) is in an open state, a gap (Q) is formed between the upper end of the smoke baffle (2) and the smoke collecting hood (1), and the gap (Q) is located in front of the front end of the air inlet (11), and wherein: The range hood further comprises an air outlet (7) arranged on the inner side of the smoke collecting hood (1), the air outlet (7) comprising an outlet (73) capable of blowing air between the gap (Q) and the front end of the air inlet (11) to form an air curtain, and an opening (13) corresponding to the outlet (73) is formed at the bottom of the smoke collecting hood (1).

2. The range hood according to claim 1, characterized in that: The air outlet member (7) comprises a hollow outer shell (71), a flow guide cavity (74) is formed in the outer shell (71), the outlet (73) is formed on the bottom surface of the rear end of the outer shell (71), and an inlet (72) for air flow is also formed on the front end of the outer shell (71), and the width of the outer shell (71) gradually increases from front to back.

3. The range hood according to claim 2, characterized in that: The outlets (73) have at least two outlets arranged evenly spaced apart in the left-right direction.

4. The range hood according to claim 2, characterized in that: A partition (75) is arranged in the housing (71), and at least two partitions (75) are arranged at intervals on the left and right, and the distance between two adjacent partitions (75) gradually increases from the front to the back.

5. The range hood according to claim 4, characterized in that: There are two partitions (75), and the two partitions (75) extend obliquely from front to back in a direction gradually moving away from each other. The rear end of the partition (75) on the left side is close to the left end of the rear end of the shell (71), and the rear end of the partition (75) on the right side is close to the right end of the rear end of the shell (71).

6. The range hood according to claim 2, characterized in that: A guide wall (711) is at least partially formed on the upper side wall of the housing (71), and the guide wall (711) gradually slopes downward from front to back.

7. The range hood according to claim 1, characterized in that: The air outlet member (7) further comprises an inlet (72) for air flow to flow in, and the range hood further comprises a fan system (4) and an air outlet hood (5) arranged at the air outlet of the fan system (4), wherein the air outlet hood (5) and the inlet (72) of the air outlet member (7) are directly or indirectly connected via a conduit (100) to achieve fluid communication.

8. The range hood according to claim 7, characterized in that: The range hood further comprises a flow divider (8) inserted into the air outlet hood (5); the bottom of the portion of the flow divider (8) located inside the air outlet hood (5) is open to form a flow divider port (81); the portion of the flow divider (8) located outside the air outlet hood (5) is formed with an air outlet (83); and the duct (100) is connected between the air outlet (83) and the inlet (72) of the air outlet member (7).

9. The range hood according to claim 8, characterized in that: A pressurized chamber (82) is formed inside the portion of the splitter hood (8) located outside the air outlet hood (5); the pressurized chamber (82) is conical, and the diameter of the pressurized chamber (82) gradually decreases from the wall surface of the air outlet hood (5) toward a direction away from the air outlet hood (5); and the air outlet (83) is located at the most downstream of the pressurized chamber (82).

10. The range hood according to claim 7, characterized in that: The range hood further comprises a fan frame (3) arranged on the smoke collecting hood (1), the fan system (4) being arranged in the fan frame (3), the air outlet hood (5) being located on the top of the fan frame (3), an electrical box body (92) being arranged on the top of the fan frame (3), a notch (921) being provided on the electrical box body (92), a fan cover (10) being arranged on the front side of the fan frame (3), a groove (101) being formed between the fan frame (3) and the fan cover (10), and the duct (100) passing through the notch (921) of the electrical box body (92), the electrical box body (92) and the groove (101) from the connection with the air outlet hood (5) to enter the smoke collecting hood (1) and be connected with the air outlet member (7).

Images