Oil smoke purifying and filtering device and oil smoke purifying and filtering system

Abstract

The utility model discloses an oil fume purifying and filtering device which comprises a shell, a primary filtering layer group and a secondary filter, wherein an ascending oil fume channel is limited by the shell; the primary filtering layer group and the secondary filter are positioned in the shell; the primary filter layer group comprises a lower filter layer and an upper filter layer which are spaced from each other, and a lower oil smoke hole of the lower filter layer is provided with a hole edge formed by a plurality of straight edges. The utility model further discloses an oil fume purifying and filtering system with the oil fume purifying and filtering device. The utility model has the beneficial effect that the cleaning difficulty and the potential safety hazard caused by the downward dripping of oil drops are avoided.

Description

Technical Field

[0001] The invention relates to an oil fume purification and filtering device and an oil fume purification and filtering system, belonging to the technical field of kitchen appliances. Background Art

[0002] The oil fume purification filter device is a device widely used in kitchen oil fume purification. It mainly filters and purifies the oil fume through the primary filter layer group (or filter net) and the secondary filter (such as electrostatic filter), so as to separate the oil in the oil fume. The specific working principle is: the oil fume first passes through the primary filter layer group (or filter net), so that the large particles of oil droplets are intercepted, and after being deposited to a certain extent, they drip due to gravity. After the initial purification, the oil fume passes through the secondary filter (such as electrostatic filter), and after being deposited to a certain extent, it drips due to gravity, and finally the oil droplets are collected in the oil collection box below.

[0003] At present, in the prior art, the oil fume purification filter device is usually placed horizontally, that is, the oil fume channel inside the oil fume purification filter device is a horizontal oil fume channel. Since the oil fume flows in and out horizontally, it is convenient to set an oil collection box at the bottom of the oil fume purification filter device. However, in some application scenarios, due to limited space layout, the oil fume purification filter device can only be set vertically, so that the internal oil fume channel is an ascending oil fume channel, and the oil droplets of the primary filter layer group and the secondary filter will drip down without obstruction, and even drip into the inlet air duct flue, which is not only difficult to clean, but also causes safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an oil fume purification and filtering device and an oil fume purification and filtering system to avoid the difficulty in cleaning and safety hazards caused by oil droplets dripping downwards.

[0005] The utility model is realized through the following technical solutions.

[0006] A fume purification and filtering device comprises a housing defining an ascending fume passage, a primary filter layer group and a secondary filter located in the housing;

[0007] The primary filter layer group comprises a lower filter layer and an upper filter layer spaced apart from each other, and the lower fume holes of the lower filter layer have hole edges formed by a plurality of straight edges.

[0008] As a further improvement of the utility model, the primary filter layer group is rotatably connected to the shell and can be rotated and adjusted from a horizontal state to an inclined state. The shell is provided with an oil drainage mechanism, and the oil drainage mechanism is used to discharge oil droplets on the primary filter layer group out of the shell when the primary filter layer group is in an inclined state.

[0009] As a further improvement of the utility model, the width of the lower oil fume holes along the flow direction of the oil droplets in the lower filter layer is greater than the width along the lower filter layer along the direction of the rotation axis.

[0010] As a further improvement of the utility model, the lower layer oil fume hole has a diamond-shaped hole edge.

[0011] As a further improvement of the utility model, the lower oil fume holes of the lower filter layer and the upper oil fume holes of the upper filter layer are staggered in the vertical direction, so that the oil dripping from the secondary filter falls on the top surface of the lower filter layer.

[0012] As a further improvement of the present invention, the oil discharge mechanism includes an oil discharge structure connected to the outer wall of the shell and an oil receiving structure connected to the inner wall of the shell. The oil receiving structure is used to receive the oil droplets dripping from the primary filter layer group when it is rotated to an inclined state, so that the oil droplets on the oil receiving structure are discharged outside the shell by the oil discharge structure.

[0013] As a further improvement of the present invention, the oil receiving structure may abut against one side of the primary filtering layer group to limit its maximum rotation angle.

[0014] As a further improvement of the present invention, the primary filter layer group is surrounded by a frame, and the frame of the primary filter layer group corresponding to the oil receiving structure is provided with an oil drainage hole, so that the oil droplets on the primary filter layer group flow to the oil receiving structure through the oil drainage hole, and then are discharged outside the shell by the oil drainage structure.

[0015] As a further improvement of the present invention, rotating shafts are respectively provided on the corresponding two sides of the primary filtering layer group, and the rotating shafts are rotatably connected to the shell. A driver is provided outside the shell for driving the rotating shafts to rotate.

[0016] A fume purification and filtering system comprises the fume purification and filtering device, an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is connected to the bottom end of the shell and is used to input the fume from the kitchen into the fume purification and filtering device, and the air outlet pipe is connected to the top end of the shell and is used to discharge the gas purified by the fume purification and filtering device into the atmosphere.

[0017] Beneficial effects of the utility model:

[0018] 1. The lower oil fume hole has a hole edge formed by multiple straight edges, which has a smaller circumference than the circular hole, making it more difficult for the oil droplets on the top surface of the lower filter layer to drip from the lower oil fume hole. Since there are multiple straight edges at the hole edge, the angle formed by the intersection will form a slightly different surface tension effect on the oil droplets than the straight edges, which will also play a role in preventing the oil droplets from dripping from the lower oil fume hole; in addition, the oil droplets on the top surface of the lower filter layer are more likely to flow along the straight edges toward the oil discharge mechanism, thereby improving the oil discharge efficiency;

[0019] 2. Since the upper and lower oil fume holes are staggered, it is possible to prevent oil droplets from directly passing through the lower oil fume holes and dripping out of the shell, and then dripping onto the air inlet flue or other equipment connected to the shell, thereby avoiding the inconvenience of cleaning or even safety hazards. When the oil fume passes through the lower oil fume holes and flows upward, it will directly hit the bottom surface of the upper filter layer, thereby forming an oil layer or oil droplets on the bottom surface of the upper filter layer, which plays a preliminary purification and filtering role for the oil fume;

[0020] 3. The primary filter layer group can be adjusted by rotation to change from a horizontal state to an inclined state, so that the oil droplets on the primary filter layer group can flow along the inclined direction, and the oil droplets can be discharged out of the shell through the oil discharge mechanism, which plays the function of oil discharge and further reduces the risk of oil droplets dripping downwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0022] Figure 1 is a schematic diagram of the oil fume purification and filtering device of Example 1;

[0023] Figure 2 This is an internal structure diagram of the oil fume purification and filtering device of Example 1;

[0024] Figure 3 is a schematic diagram of the primary filtration layer group of Example 1;

[0025] Figure 4 It is a partial schematic diagram of the primary filtering layer group of Example 1;

[0026] Figure 5 This is a schematic diagram of the oil fume purification and filtration system of Example 2. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below based on the drawings and embodiments.

[0028] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0029] Embodiment 1:

[0030] A fume purification and filtering device, referring to Figure 1-4 , used for purifying oil smoke, comprising a shell 1, a primary filter layer group 2, and a secondary filter 3, wherein the shell 1 is provided with openings at its top and bottom ends, and its internal space defines an ascending oil smoke channel p, that is, the oil smoke flows from bottom to top along the ascending oil smoke channel p, the primary filter layer group 2 and the secondary filter 3 are arranged in the shell 1, and the primary filter layer group 2 is located below the secondary filter 3, so that in the process of the oil smoke flowing from bottom to top, the primary filter layer group 2 and the secondary filter 3 sequentially purify and filter the oil smoke to remove the oil component in the oil smoke.

[0031] The primary filter layer group 2 includes a lower filter layer 21 and an upper filter layer 22 spaced apart from each other. The lower filter layer 21 and the upper filter layer 22 can be set as a plate structure. In this embodiment, the upper filter layer 22 is set as one, that is, the primary filter layer group 2 in this embodiment is a double-layer plate structure. Multiple upper filter layers 22 can also be set, so that the primary filter layer group 2 is a multi-layer plate structure. Multiple lower oil fume holes h1 are set on the lower filter layer 21, and multiple upper oil fume holes h2 are set on the upper filter layer 22.

[0032] Oil will accumulate on the top surface of the lower filter layer 21. These oil droplets will flow on the lower filter layer 21 under the wind force of the oil smoke, and easily drip down from the lower oil smoke hole h1. The lower oil smoke hole h1 on the lower filter layer 21 has a hole edge formed by multiple straight edges h11, that is, the lower oil smoke hole h1 becomes a polygonal hole shape. Compared with circular holes, elliptical holes or other circular holes, under the premise of the same area of ​​the lower oil smoke hole h1 (without affecting the oil smoke flow), the hole edge of the lower oil smoke hole h1 has a smaller circumference, making it more difficult for the oil droplets on the top surface of the lower filter layer 21 to drip from the lower oil smoke hole h1. In addition, it should be noted that compared with circular holes and other circular holes, the polygonal hole shape will form a slightly different surface tension effect on the oil droplets than the straight edges h11 due to the intersection of multiple straight edges h11 on the hole edge, which will also play a role in preventing the oil droplets from dripping from the lower oil smoke hole h1.

[0033] In this embodiment, the primary filter layer group 2 is rotatably connected to the shell 1 and can be rotated and adjusted from a horizontal state to an inclined state. The shell 1 is provided with an oil discharge mechanism, which is used to discharge the oil droplets on the primary filter layer group 2 out of the shell when the primary filter layer group 2 is in an inclined state, thereby realizing the discharge of the oil purified and filtered by the oil smoke.

[0034] In this embodiment, the width of the lower oil fume hole h1 along the flow direction of the oil droplets in the lower filter layer 21 is greater than the width along the lower filter layer 21 along the rotation axis direction. Therefore, when the lower filter layer 21 is adjusted to an inclined state, the oil droplets on the top surface of the lower filter layer 21 are more likely to flow along the straight edge h11 toward the oil discharge mechanism, thereby improving the oil discharge efficiency.

[0035] More specifically, the lower oil fume hole h1 of the present embodiment has a diamond-shaped hole edge to match the relationship between the two widths of the lower oil fume hole h1, and the diamond-shaped hole is simpler in processing technology.

[0036] In this embodiment, the upper oil fume holes h2 and the lower oil fume holes h1 are arranged staggered in the vertical direction. When the oil fume passes through the primary filter layer group 2 and the secondary filter 3, the oil will be filtered out respectively. Since the secondary filter 3 is located above the primary filter layer group 2, the oil droplets formed on the secondary filter 3 will fall onto the primary filter layer group 2. Since the upper oil fume holes h2 and the lower oil fume holes h1 are staggered, it is possible to prevent the oil droplets from directly passing through the lower oil fume holes h1 and dripping out of the housing 1, and then dripping onto the air inlet flue or other equipment connected to the housing 1, thereby avoiding the situation where cleaning is inconvenient or even causes safety hazards. Since the lower oil fume holes h1 and the upper oil fume holes h2 are arranged staggered, when the oil fume passes through the lower oil fume holes h1 and flows upward, it will directly hit the bottom surface of the upper filter layer 22, thereby forming an oil layer or oil droplets on the bottom surface of the upper filter layer 22, which plays a preliminary purification and filtering role for the oil fume.

[0037] As for the oil discharge mechanism, in the present embodiment, it includes an oil discharge structure 41 and an oil receiving structure 42. The oil discharge structure 41 is connected to the outer wall of the shell 1. The oil discharge structure 41 can be set as an oil discharge pipe, or it can be set as other structures that can discharge the oil outside the shell 1. The number of settings of the oil discharge structure 41 is set according to the actual application requirements. The oil receiving structure 42 is connected to the inner wall of the shell 1. The oil receiving structure 42 is used to receive the dripping oil droplets when the primary filter layer group 2 is rotated to an inclined state, so that the oil droplets on the oil receiving structure 42 are discharged from the shell 1 by the oil discharge structure 41. The oil receiving structure 42 can be set as an oil receiving plate, or it can be set as an oil receiving groove or an oil receiving shell. The oil receiving structure 42 is set slightly tilted, so that the oil droplets on the oil receiving structure 42 can be prevented from falling into the shell 1, and the oil droplets can also flow to the oil discharge structure 41.

[0038] In addition, the oil receiving structure 42 can abut against the downwardly inclined side of the primary filter layer group 2 , thereby limiting the maximum rotation angle of the primary filter layer group 2 .

[0039] In this embodiment, the primary filter layer group 2 has a frame 23 around it, and the frame 23 of the primary filter layer group 2 corresponding to the oil receiving structure 42 is provided with an oil discharge hole 24, so that the oil droplets on the primary filter layer group 2 flow to the oil receiving structure 42 through the oil discharge hole 24, and then are discharged outside the shell 1 by the oil discharge structure 41.

[0040] In this embodiment, the primary filter layer group 2 has two corresponding sides with rotating shafts 51, the rotating shafts 51 are arranged near the middle, the two rotating shafts 51 are rotatably connected to the housing 1, and a driver 52 is arranged outside the housing 1 to drive the rotating shafts 51 to rotate. The driver 52 can be specifically set as a motor, and one can be set to drive one of the rotating shafts 51, or two can be set to drive the two rotating shafts 51 simultaneously.

[0041] In this embodiment, the secondary filter 3 is configured as an electrostatic filter, and its working principle is to use a high-voltage electrostatic field to ionize the oil fume, so that the oil fume particles carry positive or negative charges, so that these charged oil fume particles are subsequently adsorbed under the action of the electric field force, thereby achieving efficient oil fume filtration and purification.

[0042] Embodiment 2:

[0043] A fume purification and filtration system, referring to Figure 5 , comprising an oil fume purification filter device 101, an air inlet pipe 102, and an air outlet pipe 103, wherein the oil fume purification filter device 101 is as shown in Example 1. The air inlet pipe 102 is connected to the bottom end of the housing 1, and is used to input oil fume from the kitchen to the oil fume purification filter device 101, for example, the air inlet pipe 102 can be connected to the exhaust pipe of the kitchen hood or the range hood, and the air outlet pipe 103 is connected to the top end of the housing 1, and is used to discharge the gas purified by the oil fume purification filter device 101 into the atmosphere.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A fume purification and filtering device, characterized in that: It comprises a shell (1) defining an ascending oil smoke passage (p), a primary filter layer group (2) and a secondary filter (3) located in the shell (1); The primary filter layer group (2) comprises a lower filter layer (21) and an upper filter layer (22) which are spaced apart from each other, and the lower fume holes (h1) of the lower filter layer (21) have hole edges formed by a plurality of straight edges (h11).

2. The oil fume purification and filtering device according to claim 1, characterized in that: The primary filter layer group (2) is rotatably connected to the shell (1) and can be rotatably adjusted from a horizontal state to an inclined state. The shell (1) is provided with an oil discharge mechanism. The oil discharge mechanism is used to discharge oil droplets on the primary filter layer group (2) out of the shell (1) when the primary filter layer group (2) is in the inclined state.

3. The oil fume purification and filtering device according to claim 2, characterized in that: The width of the lower oil smoke hole (h1) along the flow direction of the oil droplets in the lower filter layer (21) is greater than the width of the lower filter layer (21) along the direction of the rotation axis.

4. The oil fume purification and filtering device according to claim 3, characterized in that: The lower oil smoke hole (h1) has a diamond-shaped hole edge.

5. The oil fume purification and filtering device according to claim 2, characterized in that: The lower oil fume holes (h1) of the lower filter layer (21) and the upper oil fume holes (h2) of the upper filter layer (22) are arranged staggered with each other in the vertical direction, so that the oil dripping from the secondary filter (3) falls on the top surface of the lower filter layer (21).

6. The oil fume purification and filtering device according to any one of claims 2 to 5, characterized in that: The oil discharge mechanism comprises an oil discharge structure (41) connected to the outer wall of the shell (1) and an oil receiving structure (42) connected to the inner wall of the shell (1); the oil receiving structure (42) is used to receive oil drops dripping from the primary filtering layer group (2) when the primary filtering layer group (2) is rotated to an inclined state, so that the oil drops on the oil receiving structure (42) are discharged from the shell (1) by the oil discharge structure (41).

7. The oil fume purification and filtering device according to claim 6, characterized in that: The oil receiving structure (42) can abut against one side of the primary filtering layer group (2) to limit its maximum rotation angle.

8. The oil fume purification and filtering device according to claim 6, characterized in that: The primary filter layer group (2) has a frame (23) around its periphery, and the frame (23) of the primary filter layer group (2) corresponding to the oil receiving structure (42) is provided with an oil discharge hole (24), so that oil droplets on the primary filter layer group (2) flow through the oil discharge hole (24) to the oil receiving structure (42), and then are discharged from the housing (1) by the oil discharge structure (41).

9. The oil fume purification and filtering device according to any one of claims 2 to 5, characterized in that: Rotating shafts (51) are respectively provided on the corresponding two sides of the primary filtering layer group (2); the rotating shafts (51) are rotatably connected to the shell (1); and a driver (52) is provided outside the shell (1) for driving the rotating shaft (51) to rotate.

10. A fume purification and filtration system, characterized in that: The oil fume purification filter device (101) comprises an oil fume purification filter device (101) as claimed in any one of claims 1 to 9, an air inlet pipe (102), and an air outlet pipe (103), wherein the air inlet pipe (102) is connected to the bottom end of the shell (1) and is used to input oil fume from the kitchen into the oil fume purification filter device (101), and the air outlet pipe (103) is connected to the top end of the shell (1) and is used to discharge the gas purified by the oil fume purification filter device (101) into the atmosphere.

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