Cooking fume purification processor and fume suction and exhaust device for range hood

Abstract

The utility model belongs to the technical field of range hoods, and relates to an oil fume purification processor and a fume suction and exhaust device for a range hood. Comprising an air inlet shell and an air outlet shell; the air inlet filter screen and the air outlet filter screen are respectively mounted on the air inlet shell and the air outlet shell; the plasma generator is installed in the shell and located on the air outlet side of the air inlet filter screen; the filter element is installed in the shell and located on the air inlet side of the air outlet filter screen; wherein the filter element is obliquely arranged in the shell, and lampblack enters from the air inlet filter screen, is decomposed by the plasma generator, is filtered by the filter element and is discharged from the air outlet filter screen. When the range hood is used for sucking oil fume, pollutant molecules of the oil fume are bombarded by plasmas and then filtered by the filter element, so that the oil fume can be primarily filtered by the range hood and then secondarily purified and filtered by the purification processor, the oil fume finally discharged into the atmosphere can be fully purified, and the pollution is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hoods, and relates to an oil fume purification processor and a smoke exhaust device for a range hood. Background Art

[0002] A range hood is a commonly used household kitchen appliance, and has a smoke exhaust device arranged towards a cooking stove. The smoke exhaust device usually includes a smoke inlet, a volute, a smoke exhaust pipe and a final smoke outlet. Oil fume enters through the smoke inlet, passes through the volute and the smoke exhaust pipe, and finally is discharged into the atmosphere from the smoke outlet.

[0003] At present, general range hoods only simply separate grease and then directly discharge it outdoors. The range hoods on the market do not have the function of completely filtering oil fume. The oil fume discharged outdoors still contains certain grease and various harmful substances, which cause great damage to the air environment and human health. Especially in some countries or regions, kitchen oil fume cannot be discharged outdoors, and the oil fume needs to circulate in the kitchen, which is more harmful to human health. Therefore, in order to reduce the pollution of oil fume to the air environment, protect human health and meet the oil fume discharge requirements of different countries or regions, there is an urgent need for a processing device to assist the range hood in processing oil fume. Summary of the Invention

[0004] To solve the above problems, the utility model provides an oil fume purification processor and a smoke exhaust device for a range hood, which are installed in the range hood and can perform secondary purification and filtration on oil fume, greatly reducing the harm to the environment and human body.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides an oil fume purification processor, which has the following technical features: including a housing, which has an air inlet housing and an air outlet housing; an air inlet filter screen and an air outlet filter screen, which are respectively installed on the air inlet housing and the air outlet housing; a plasma generator, which is installed inside the housing and is located on the air outlet side of the air inlet filter screen; and a filter element, which is installed inside the housing and is located on the air inlet side of the air outlet filter screen; wherein, the filter element is obliquely arranged inside the housing, and oil fume enters from the air inlet filter screen, is decomposed by the plasma generator and then filtered by the filter element, and then is discharged from the air outlet filter screen.

[0007] The oil fume purification processor provided by the utility model may also have the following technical features: the filter element is fixed inside the housing through a mounting bracket, the mounting bracket includes symmetrically arranged first and second frames, the first frame and the second frame are buckled with each other, and a cavity for installing the filter element is formed inside, and the edges of the first frame and the second frame are fixed to the housing through fixing parts.

[0008] The oil fume purification processor provided by the present utility model may further have the following technical feature: The housing further has a connecting shell connecting the air inlet shell and the air outlet shell. Concave platforms are respectively formed at one ends of the air inlet shell and the air outlet shell facing the connecting shell, and both ends of the connecting shell are respectively fixed on the two concave platforms.

[0009] The oil fume purification processor provided by the present utility model may further have the following technical feature: The first frame has a first fixed edge, and the second frame has a second fixed edge. The first fixed edge and the second fixed edge are arranged diagonally. The first fixed edge is fixed to the air inlet shell or / and the connecting shell, and the second fixed edge is fixed to the air outlet shell.

[0010] The oil fume purification processor provided by the present utility model may further have the following technical feature: The plasma generator includes a generator body and an electric field element. A power cord is provided on the generator body, and a through hole for the power cord to pass through is formed on the air inlet shell. The electric field element is installed on a side of the generator body close to the filter element.

[0011] The oil fume purification processor provided by the present utility model may further have the following technical feature: An installation groove is formed on the inner wall of the air inlet shell, and the edge of the air inlet filter is clamped in the installation groove; a clamping groove is formed on the inner wall of the air outlet shell, and the edge of the air outlet filter is clamped in the clamping groove.

[0012] The present utility model further provides an air suction and exhaust device for a range hood, which is installed in the body of the range hood and has the following technical feature, including: a suction port and an exhaust port, a volute installed on the air outlet side of the suction port and having an air outlet; an exhaust duct communicated with the exhaust port; and an oil fume purification processor installed between the air outlet and the exhaust duct; wherein, the oil fume purification processor is the oil fume purification processor as described above.

[0013] The air suction and exhaust device for a range hood provided by the present utility model may further have the following technical feature: An air duct connector is provided between the air outlet and the oil fume purification processor. The air duct connector includes a connector and an air duct. The connector is installed at the air outlet, and the air duct connects the connector and the air inlet shell.

[0014] The smoke exhaust and suction device for a range hood provided by the present utility model may further have the following technical features. The connector has: a connection part for connecting with the air duct; a mounting part for fixing to the air outlet; and a guiding part, with a slot for inserting the air duct provided between the guiding part and the connection part. Among them, the connection part has: a main body part for inserting into the air duct, and an abutting part containing an abutting surface protruding from the main body part, and the abutting surface is used for abutting against the end surface of the air duct. A limiting protrusion for limiting the air duct is provided on the guiding part.

[0015] The present utility model also provides a smoke exhaust and suction device for a range hood, which is installed in the body of the range hood and has the following technical features. It includes: a smoke inlet and a smoke outlet, a volute installed on the air outlet side of the smoke inlet and having an air outlet; a smoke exhaust pipe installed at the air outlet; and an oil fume purification processor installed between the smoke exhaust pipe and the smoke outlet. Among them, the oil fume purification processor is the oil fume purification processor as described above.

[0016] Functions and effects of the utility model

[0017] According to the oil fume purification processor and the smoke exhaust and suction device for a range hood of the present utility model, due to the setting of the plasma generator and the filter element, the oil fume sucked in by the range hood can sequentially pass through the plasma generator and the filter element. In this process, the oil fume is first bombarded by plasma to break down pollutant molecules, and then filtered by the filter element, so that the oil fume can be first filtered by the range hood and then secondarily purified and filtered by the purification processor, enabling the oil fume finally discharged into the atmosphere to be fully purified and greatly reducing pollution. Description of the drawings

[0018] Figure 1 It is a structural schematic diagram of the smoke exhaust and suction device for a range hood in Embodiment 1 of the present utility model.

[0019] Figure 2 It is a structural schematic diagram of the oil fume purification processor of the present utility model.

[0020] Figure 3 It is a structural schematic diagram of the oil fume purification processor of the present utility model with part of the housing removed.

[0021] Figure 4 It is an installation structure diagram of the filter element of the present utility model.

[0022] Figure 5 It is a structural diagram of the mounting bracket of the present utility model.

[0023] Figure 6 It is a cross-sectional view of the oil fume purification processor of the present utility model.

[0024] Figure 7It is a schematic diagram of the installation structure of the volute and the air duct connector of the present utility model.

[0025] Figure 8 It is an exploded view of the structure of the air duct connector of the present utility model.

[0026] Figure 9 It is the front view of the connector of the present utility model.

[0027] Figure 10 It is the perspective view of the connector of the present utility model.

[0028] Figure 11 It is a schematic diagram of the structure of the smoke exhaust and suction device for a range hood according to Embodiment 2 of the present utility model.

[0029] Reference numerals: smoke exhaust and suction device for a range hood 10, smoke suction port 11, smoke exhaust port 12, volute 2, air outlet 21, smoke exhaust pipe 3, oil fume purification processor 4, housing 40, air inlet filter 41, air outlet filter 42, plasma generator 43, generator body 431, electric field element 432, power cord 433, filter element 44, air inlet housing 45, recessed platform 451, installation groove 452, air outlet housing 46, card slot 461, connecting housing 47, first frame 481, first fixed edge 4811, second frame 482, second fixed edge 4821, air duct connector 5, connector 51, air duct 52, sealing ring 53, connecting part 54, main body part 541, abutting part 542, abutting surface 543, installation part 55, guiding part 56, limiting projection 561, slot 57. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the following specifically describes the panel mounting assembly and the induction cooker of the present utility model in combination with embodiments and drawings.

[0031] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have any technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the functions that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model.

[0032] It should also be noted that when an element is referred to as "fixed" or "set" on another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or it can also be indirectly connected to the other element through an intermediate element.

[0033] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0034] <Example 1>

[0035] This embodiment provides a smoke exhaust and suction device 10 for a range hood, which is installed on the range hood. As Figure 1 shown, the smoke exhaust and suction device 10 includes a smoke suction port 11, a smoke exhaust port 12, a volute 2, a smoke exhaust pipe 3, and an oil fume purification processor 4. The smoke suction port 11 and the smoke exhaust port 12 are arranged on the body, serving as the initial inlet and the final outlet of the oil fume respectively. Filter plates are installed at both the smoke suction port 11 and the smoke exhaust port 12. The volute 2 is installed inside the range hood body and is located on the air outlet side of the smoke suction port 11. The tail end of the volute 2 has an air outlet 21. The air outlet 21 is connected to the oil fume purification processor 4 through an air duct connector 5. The tail end of the oil fume purification processor 4 is connected to the smoke exhaust pipe 3, and the tail end of the smoke exhaust pipe 3 communicates with the smoke exhaust port 12. When the smoke exhaust and suction device 10 works, the oil fume enters from the smoke suction port 11, passes through the volute 2, the air outlet 21, the air duct connector 5, the oil fume purification processor 4, and the smoke exhaust pipe 3 in sequence, and finally is discharged from the smoke exhaust port 12.

[0036] Among them, as Figure 2 and Figure 3 shown, the oil fume purification processor 4 includes a housing 40, an air inlet filter 41, an air outlet filter 42, a plasma generator 43, and a filter element 44. The housing 40 has an air inlet housing 45, an air outlet housing 46, and a connecting housing 47. The air inlet filter 41 is installed at the inlet of the air inlet housing 45, and the air outlet filter 42 is installed at the outlet of the air outlet housing 46. As Figure 6 shown, an installation groove 452 is formed on the inner wall of the air inlet housing 45, and the edge of the air inlet filter 41 is clamped in the installation groove 452; a clamping groove 461 is formed on the inner wall of the air outlet housing 46, and the edge of the air outlet filter 42 is clamped in the clamping groove 461. The air inlet housing 45, the air outlet housing 46, and the connecting housing 47 are all formed by covering two symmetric housings up and down and are fixed by screws or buckles.

[0037] The plasma generator 43 has a generator body 431 and an electric field element 432, which are installed inside the air inlet housing 45 and located on the air outlet side of the air inlet filter screen 41. The generator body 431 is provided with a power cord 433. A through hole for the power cord 433 to pass through is formed in the air inlet housing, and the power cord 433 passes through the through hole and is connected to an external socket. The electric field element 432 is installed on one side of the generator body 431 close to the filter element 44. Under the action of the electric field element 432, dielectric discharge will generate a large number of energy-carrying electrons to bombard pollutant molecules. These electrons collide inelastically with molecules and atoms in the gas, and their kinetic energy is converted into the internal energy of ground-state molecules (atoms), triggering processes such as super-excitation, dissociation, and ionization to form plasma. The plasma is rich in electrons, ions, free radicals, and excited-state molecules (atoms) inside, and has extremely strong molecular activation ability. The formed low-temperature plasma is electrically neutral as a whole, but there are a large number of positive and negative charges inside, which can generate a huge electric field effect. This electric field can seriously break through and damage the bacterial cell membrane, further enhancing the sterilization effect.

[0038] The filter element 44 is inclined and installed inside the housing 40 and located on the air inlet side of the air outlet filter screen 42; the oil fume enters from the air inlet filter screen 41, is decomposed by the plasma generator 43, then is filtered again by the filter element 44, and then is discharged from the air outlet filter screen 42.

[0039] In this embodiment, the filter element 44 is an active particle filter element, which is rectangular parallelepiped-shaped and is fixed in the housing 40 through a mounting bracket 48, as Figure 5 shown. The mounting bracket 4 includes a symmetrically arranged first frame 481 and a second frame 482. The two wide sides of the first frame 481 and the second frame 482 along the length direction are buckled with each other, and a cavity for installing the filter element 44 is formed inside. The edges of the first frame 481 and the second frame 482 are fixed to the housing 40 through fixing members. As Figure 6As shown, the connecting shell 47 connects the air inlet shell 45 and the air outlet shell 46. At one end of the air inlet shell 45 and the air outlet shell 46 facing the connecting shell 47, sunken platforms 451 are respectively formed, and both ends of the connecting shell 47 are respectively fixed on the two sunken platforms. The first frame 481 has a first fixed edge 4811, and the second frame 482 has a second fixed edge 4821. The first fixed edge 4811 and the second fixed edge 4821 are diagonally arranged. The first fixed edge 4811 is fixed to the bottom of the air inlet shell 45 or / and the connecting shell 47, and the second fixed edge 4821 is fixed to the top of the air outlet shell 46, so that the filter element 44 is installed obliquely upward in the oil fume flow direction. Such an installation method can maximize the contact area between the oil fume and the filter element 44 and fully filter the oil fume. The active particles such as high-energy electrons and free radicals generated by the filter element 44 act on the pollutants in the waste gas, causing the pollutant molecules to decompose in a very short time and subsequent various reactions to achieve the purpose of degrading the pollutants. For example, the active particles can break the gas molecular bonds to generate some single-atom molecules, negative oxygen ions, OH ions, free oxygen atoms, etc. These all have strong oxidation ability and high chemical activity and can react with microorganisms such as bacteria and viruses to destroy their structures, thus achieving the effect of sterilization and disinfection.

[0040] As Figure 1 and Figure 7 shown, a duct connector 5 is installed at the air outlet 21 of the volute 2. The duct connector 5 is used to install the oil fume purification processor 4. Specifically, as Figure 8 shown, the duct connector 5 includes a connector 51 and a duct 52. The connector 51 is installed at the air outlet 21, and the duct 52 is used to connect the connector 51 and the air inlet shell 45. A sealing ring 53 is also pressed between the connector 51 and the duct 52.

[0041] As Figure 9 shown, the connector 51 has a connecting portion 54, a mounting portion 55, and a guiding portion 56. The connecting portion 54 is used to connect with the duct 52; the mounting portion 55 is used to be fixed to the air outlet 21; the guiding portion 56 is located on the side of the connecting portion 54, and a slot 57 for inserting the duct 52 is provided between the guiding portion 56 and the connecting portion 54. Among them, as Figure 10As shown, the installation part 55 has a rectangular plate-like structure with smooth corners at the four corners, and has a pair of mutually parallel long sides and a pair of mutually parallel short sides. Installation holes are provided at the four corners of the installation part 55 for fixing to the volute 2 through bolts or screws. A connecting part 54 is formed to protrude towards one side in the middle of the installation part 55, and guiding parts 56 are formed on both sides of the connecting part 54. The connecting part 11 as a whole also has a rectangular ring shape with smooth corners at the four corners, and has a main body part 541 and an abutting part 542. The main body part 541 is used to be inserted into the air duct 52, and the abutting part 542 includes an abutting surface 543 protruding from the main body part 541. This abutting surface 543 is also the bottom of the slot 57. The abutting surface 543 is used to abut against the end surface of the air duct 52, so that when the air duct 52 is installed, it can be directly snapped into the slot 57, and then the end surface is abutted against the abutting surface 543.

[0042] There are two guiding parts 56, which are respectively located on the short sides of the installation part 55, that is, on the left and right sides (width direction of the rectangle) of the connecting part 54 in the figure. A limiting protrusion 561 for limiting the air duct 52 is provided on the guiding part 56. When installing the air duct 52, it can be directly inserted along the slot 57 beside the guiding part 56, which is very convenient and fast. After the end surface of the air duct 52 is attached to the abutting surface 543, the limiting protrusion 561 can abut against the air duct 52. The limiting protrusion 561 and the abutting surface 543 limit the front and rear ends of the air duct 52, so as to limit the air duct 52 between the limiting protrusion 561 and the abutting surface 543, preventing the air duct 52 from detaching from the connector 51 and ensuring the stability of the connection structure.

[0043] <Embodiment 2>

[0044] This embodiment also proposes an air suction and exhaust device 10' for a range hood, which is basically the same as the above Embodiment 1, except that in the above Embodiment 1, it is installed between the air outlet 21 of the volute 2 and the exhaust pipe 3, while in this embodiment, the oil fume purification processor 4 is installed between the exhaust pipe 3 and the exhaust port. Specifically, as Figure 11 shown, it includes a smoke suction port 11, an exhaust port, a volute 2, an exhaust pipe 3, and an oil fume purification processor 4. The smoke suction port 11 and the exhaust port 12 serve as the initial inlet and the final outlet of the oil fume respectively. Filter plates are installed at the smoke suction port 11. The volute 2 is installed inside the range hood body and is located on the air outlet side of the smoke suction port 11. The tail end of the volute 2 has an air outlet, and an exhaust pipe 3 is connected to the air outlet through an air duct connector 5. The tail end of the exhaust pipe 3 is connected to the oil fume purification processor 4 through a connecting piece. The air outlet shell 46 of the oil fume purification processor 4 is installed at the exhaust port, and the air outlet filter screen 42 at the air outlet shell 46 is the final outlet filter screen at the exhaust port. When the air suction and exhaust device 10' works, the oil fume enters from the smoke suction port 11, and successively passes through the volute 2, the air duct connector 5, the exhaust pipe 3, and the oil fume purification processor 4 and finally is discharged from the exhaust port.

[0045] The specific structures of the air duct connector 5, the smoke exhaust pipe 3, the volute 2, and the fume purification processor 4 in this embodiment are the same as those in Embodiment 1, except that the installation position of the fume purification processor 4 is changed, that is, the fume purification processor 4 is installed between the smoke exhaust pipe 3 and the smoke outlet to adapt to the requirements of different installation environments.

[0046] In the above embodiment, in the low-temperature plasma generated by the plasma generator in the fume purification processor 4, the electron energy is high, and it can act on almost all malodorous gas molecules. Moreover, the reaction is fast, not limited by the gas velocity, and can thoroughly purify the fume, with a purification rate of up to more than 98%; it can also meet the requirements of fume internal circulation emission.

[0047] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. Oil fume purification processor, characterized in that: include: A housing having an air inlet housing and an air outlet housing; An air inlet filter and an air outlet filter are respectively installed on the air inlet housing and the air outlet housing; A plasma generator is installed inside the housing and located on the air outlet side of the air inlet filter; as well as A filter element is installed inside the housing and located at the air inlet side of the air outlet filter; The filter element is arranged obliquely inside the housing, and oil smoke enters from the air inlet filter, is decomposed by the plasma generator, is filtered through the filter element, and is discharged from the air outlet filter.

2. The oil fume purification processor according to claim 1, characterized in that: The filter element is an active particle filter element, which is fixed in the shell by a mounting bracket. The mounting bracket includes a first frame and a second frame that are symmetrically arranged. The first frame and the second frame are interlocked with each other to form a cavity for installing the filter element. The edges of the first frame and the second frame are fixed to the shell by fixing parts.

3. The oil fume purification processor according to claim 2, characterized in that: The outer shell also has a connecting shell connecting the air inlet shell and the air outlet shell, and the air inlet shell and the air outlet shell are respectively formed with concave platforms at one end facing the connecting shell, and the two ends of the connecting shell are respectively fixed on the two concave platforms.

4. The oil fume purification processor according to claim 3, characterized in that: The first frame has a first fixed edge, the second frame has a second fixed edge, the first fixed edge and the second fixed edge are arranged diagonally, the first fixed edge is fixed to the air inlet shell and / or the connecting shell, and the second fixed edge is fixed to the air outlet shell.

5. The oil fume purification processor according to claim 1, characterized in that: The plasma generator comprises: a generator body and an electric field element. The generator body is provided with a power line. The air inlet shell is provided with a through hole for the power line to pass through. The electric field element is installed on a side of the generator body close to the filter element.

6. The oil fume purification processor according to any one of claims 1 to 5, characterized in that: The inner wall of the air inlet housing is provided with an installation groove, and the edge of the air inlet filter is clamped in the installation groove; the inner wall of the air outlet housing is provided with a clamping groove, and the edge of the air outlet filter is clamped in the clamping groove.

7. A smoke exhaust device for a range hood, characterized in that: include: Smoke outlet and exhaust vent, A volute, installed on the air outlet side of the smoking port, having an air outlet; A smoke exhaust duct connected to the smoke exhaust port; as well as A fume purification processor is installed between the air outlet and the fume exhaust pipe; Wherein, the oil fume purification processor is the oil fume purification processor as described in any one of claims 1-6.

8. The smoke exhaust device for a range hood according to claim 7, characterized in that: An air duct connector is provided between the air outlet and the oil fume purification processor, and the air duct connector comprises a connector and an air duct. The connector is installed at the air outlet, and the air duct connects the connector and the air inlet shell.

9. The smoke exhaust device for a range hood according to claim 8, characterized in that: The connector has: A connecting portion, used to be connected to the air duct; A mounting portion, used to be fixed to the air outlet; and A slot for inserting the air duct is provided between the guide portion and the connecting portion; Wherein, the connecting portion has: The main body is used to be inserted into the air duct. The abutting portion comprises an abutting surface protruding from the main body portion, wherein the abutting surface is used to abut against the end surface of the air duct. The guide portion is provided with a limiting protrusion for limiting the position of the air duct.

10. A smoke exhaust device for a range hood, characterized in that: include: Smoke outlet and exhaust vent, A volute, installed on the air outlet side of the smoking port, having an air outlet; A smoke exhaust duct is installed at the air outlet; as well as A fume purification processor is installed between the exhaust pipe and the exhaust port; Wherein, the oil fume purification processor is the oil fume purification processor as described in any one of claims 1-6.

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