Oil screen device for range hood and range hood

Abstract

The invention relates to an oil screen device for a range hood and the range hood, the oil screen device comprises a guide locking module arranged on the back surface of a first oil screen, the guide locking module comprises a first positioning seat with a first slide way and a sliding piece arranged in the first slide way in a sliding manner; the sliding direction of the sliding part relative to the first positioning seat is parallel to the first direction, the sliding part is provided with a first connecting end which extends out of the first positioning seat and is used for being connected with a second oil screen, and a pressing type elastic self-locking structure is arranged between the sliding part and the first positioning seat; the pressing type elastic self-locking structure is configured in the mode that the sliding piece is pressed by external force and can move between a locking position and an unlocking position relative to the first positioning base in the first direction, and the locking position and the unlocking position are spaced by a certain distance. Operators do not need to additionally apply force laterally acting on the second oil screen, so that the second oil screen can be rapidly separated relative to the first oil screen, the disassembly and assembly efficiency is improved, and a user can conveniently and independently clean all parts of the oil screen device.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to an oil net device for a range hood and the range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. The oil net of a traditional range hood is mostly a fixed integrated net. When the user cooks on one side, the air volume of the range hood cannot be effectively used to effectively extract the oil fume, resulting in the range hood being prone to smoke leakage when cooking on one side at a low gear, and the range hood being too noisy at a high gear, and unable to achieve efficient and quiet extraction. For example, the Chinese invention patent application with application number 202010058463.9 discloses such a range hood.

[0003] In order to reasonably distribute the air intake volume of the air intake area of ​​the range hood and effectively utilize the air volume of the range hood to effectively extract oil smoke, a Chinese utility model patent application with application number CN202120687387.8 (authorization announcement number: CN215570676U) discloses an air intake component and a range hood using the air intake component, the air intake component includes a panel, and a first oil net is arranged at the air inlet of the panel, the first oil net has two, one end of each of the two first oil nets is close to each other, and the other end of each of the two first oil nets is far away from each other, the air intake component also includes a second oil net, each first oil net corresponds to a second oil net, the second oil net can move in a direction away from or close to another second oil net, and each second oil net can be in a first position and a second position respectively. In the first position, the second oil net cooperates with the first oil net and is in an air intake state that makes the air inlet fully open as a whole. In the second position, the second oil net cooperates with the first oil net and is in a state of partially opening the air inlet as a whole. The adjustment of the oil net position is also reset by the compression spring assembly. The body of each compression spring assembly is fixed on the side of the first oil net facing the inner side of the shell, and the pressure head of each compression spring assembly is respectively in contact with the ends of the two second oil nets that are far away from each other. When the transmission rod drives the cam to rotate in a certain direction, the second oil net at the corresponding position slides toward the corresponding elastic member, so that the elastic member is compressed. When the transmission rod rotates in the opposite direction, the force of the cam on the block on the second oil net disappears, and the second oil net slides to the middle and resets under the action of the restoring force of the elastic member. A limit guide rail is set on the flange of the first oil net, and the upper and lower ends of the second oil net are respectively formed with inserts that slide with the limit guide rail, which play a role of sliding guidance and limiting the second oil net. A limit guide groove extending left and right is formed on the limit guide rail, and the limit guide groove passes through one end of the limit guide rail of the corresponding first oil net away from the other first oil net, and the end that passes through constitutes the entrance of the limit guide groove.

[0004] However, the air inlet assembly in the above patent application still has certain shortcomings. The compression spring assembly and the limit guide rail in the above patent application are fixed on the first oil net. When installing and disassembling the inner oil net, the inner oil net can only be moved laterally to the extreme position. In addition, during the process of disassembling and installing the inner oil net, the operator needs to always apply lateral force to the inner oil net, which makes the installation and disassembly of the inner oil net very laborious and the disassembly efficiency is low.

[0005] Therefore, the oil net device of the existing range hood needs to be further improved. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide an oil net device for a range hood that can make the disassembly and assembly process of the oil net components more labor-saving and easy to operate in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a range hood using the above-mentioned oil net device in view of the current status of the prior art.

[0008] The technical solution adopted by the present invention to solve the first technical problem is:

[0009] An oil net device for a range hood, arranged at the air inlet of the range hood, comprising a first oil net and a second oil net arranged in sequence along the air flow direction at the air inlet, wherein the first oil net is provided with a first air inlet hole, and the second oil net is provided with a second air inlet hole, and the second oil net is driven by a driving mechanism to move linearly along a first direction relative to the first oil net, thereby changing the relative position of the second air inlet hole on the second oil net and the first air inlet hole on the first oil net;

[0010] It also includes a guide locking module arranged on the back side of the first oil net, the guide locking module includes a first positioning seat with a first slide and a sliding member slidably arranged in the first slide, the sliding direction of the sliding member relative to the first positioning seat is parallel to the first direction, the sliding member has a first connecting end extending out of the first positioning seat and used to be connected to the second oil net, and a press-type elastic self-locking structure is provided between the sliding member and the first positioning seat, and the press-type elastic self-locking structure is configured as follows: the sliding member can be pressed by an external force and can move between a locked position and an unlocked position spaced a certain distance apart in the first direction relative to the first positioning seat.

[0011] As an improvement, in the moving direction of the second oil net, the second oil net has a first side and a second side relative to each other, and the driving mechanism is arranged adjacent to the first side. When the sliding member moves to the locked position, the sliding member moves away from the driving mechanism, and when the sliding member moves to the unlocked position, the sliding member moves closer to the driving mechanism.

[0012] In order to achieve generally, the press-type elastic self-locking structure can adopt the existing cantilever press buckle, ball head-slot press buckle, bilateral symmetrical press buckle, etc., but in order to adapt to the movement process of the second oil net, preferably, the guide locking module also includes a pull rod and an elastic reset member, the sliding member includes a slider body and a first guide rod connected to the slider body, the slider body is slidably limited in the first slideway, the extension direction of the first guide rod is parallel to the first direction, the first guide rod exposes the first positioning seat, and the end of the part exposed from the first positioning seat is connected to the second oil net, the slider body is provided with an annular track groove, the The track groove is provided with a stop portion, the first end of the pull rod is swingably connected to the first positioning seat, and the second end of the pull rod is provided with a limiting protrusion. During the movement of the sliding member relative to the first positioning seat, the limiting protrusion is unidirectionally slidably constrained in the track groove, and the elastic reset member acts on the sliding member and makes the sliding member always have a tendency to move along the second direction. The above-mentioned second direction is opposite to the first direction. When the sliding member is in the locked position, the second end of the pull rod abuts against the stop portion of the sliding member, and when the sliding member is in the unlocked position, the second end of the pull rod disengages from the stop portion of the sliding member.

[0013] As an improvement, a side portion of the track groove adjacent to the driving mechanism has an inner recessed portion of the track groove as the stop portion.

[0014] In order to realize the unidirectional movement of the limiting protrusion of the pull rod along the track groove, the track groove includes a first guide section, a second guide section, a third guide section and a fourth guide section which are connected in a circular manner in sequence. The first guide section and the fourth guide section also have a first limiting step in the joint position for blocking the limiting protrusion of the pull rod from the first guide section to return to the fourth guide section. The first guide section and the second guide section have a second limiting step in the combined position for blocking the limiting protrusion of the pull rod from the second guide section to return to the first guide section. The joint position of the second guide section and the third guide section is arranged at an angle to define the stop portion. The second guide section and the third guide section also have a third limiting step in the joint position for blocking the limiting protrusion of the pull rod from the third guide section to return to the second guide section. The joint position between the third guide section and the second guide section has a fourth limiting step in the third guide section for blocking the limiting protrusion of the pull rod from the fourth guide section to return to the third guide section.

[0015] In order to achieve air volume adjustment of the oil screen device based on the second oil screen pressing movement path, the sliding member also has an intermediate position where the movement direction changes during the movement of the sliding member from the unlocking position to the locking position or from the locking position to the unlocking position;

[0016] When the sliding member is in the unlocking position, the second air inlet hole of the second oil net is misaligned with the first air inlet hole of the first oil net, so that the oil net device is in a closed state;

[0017] When the sliding member is in the locked position, the wall of the first oil net covers a part of the second air inlet holes of the second oil net, and the wall of the second oil net covers a part of the first air inlet holes of the first oil net;

[0018] When the sliding member is in the middle position, the first air inlet holes of the first oil net are opposite to the second air inlet holes of the second oil net, so that the oil net device is in a maximum open state.

[0019] The "change in moving direction" in the above-mentioned "intermediate position of change in moving direction" can be understood as the position where the sliding member first moves along the first direction and then changes to move along the second direction, or the position where the sliding member first moves along the second direction and then changes to move along the first direction.

[0020] The above-mentioned elastic return member can adopt various existing technologies and may include various elastic elements such as compression springs, torsion springs, and spring leaves. However, in order to better cooperate with the above-mentioned sliding member, the elastic return member is a compression spring, which is arranged in the first slide channel and rests between the sliding member and the inner wall of the first slide channel of the first positioning seat.

[0021] In order to facilitate the disassembly of the second oil net, a first arm extending outward is provided at a side of the second oil net parallel to the moving direction of the second oil net, and the first arm is detachably connected to the first guide rod.

[0022] In order to further facilitate the installation and disassembly of the second oil cup and the first guide rod, a first rolled flange is formed at the end of the first support arm, and a first sleeve is provided in the first rolled flange for the end of the first guide rod to pass through. The outer peripheral wall of the first guide rod also has a first limiting step for abutting against the end of the first sleeve.

[0023] In order to realize the connection between the first sleeve and the first rolled flange, the first sleeve includes a first sleeve body and at least two first elastic arms which are arranged in sequence and spaced apart along the circumference of the first sleeve body and extend axially. Each of the first elastic arms has a first positioning protrusion protruding radially outward at an end away from the first sleeve body, and the end of the first sleeve body has a first limiting stop edge protruding radially outward. The end of the first rolled flange is also provided with a first limiting recess. When the first sleeve is installed in place in the first rolled flange, the first limiting stop edge abuts against the end of the first rolled flange, and the first positioning protrusion of each first elastic arm is inserted into the first limiting recess.

[0024] In order to ensure the stability of the movement of the second oil net, the second oil net has a relative third side and a fourth side, and the extension directions of the third side and the fourth side are parallel to the movement direction of the second oil net. The third side and the fourth side are provided with two first arms extending outward, and there are two guide locking modules. The two first arms are respectively connected to the first connecting ends of the sliding parts of the two guide locking modules.

[0025] In order to realize rapid disassembly and assembly of the guide locking module relative to the first oil net, the first oil net has a third flange and a fourth flange folded toward the side where the second oil net is located at positions corresponding to the third side and the fourth side of the second oil net, respectively. The third flange and the fourth flange are both provided with a detachable first mounting frame, and the guide locking module is abutted against the back side of the first oil net and is fixed by the first mounting frame.

[0026] In order to further ensure the stability of the second oil net in movement relative to the first oil net, it also includes a guide module detachably connected to the back side of the first oil net, the guide module includes a second positioning seat, a second guide rod and a second elastic member, the second positioning seat has a second slide extending along the moving direction of the second oil net, the second guide rod axially slides and is limited in the second slide, and one end is exposed outside the second slide as a second connecting end connected to the second oil net, the second elastic member is arranged in the second slide, and acts on the second guide rod, so that the second guide rod always has a tendency to move in a direction opposite to the first direction.

[0027] As an improvement, the second oil net further has a second arm extending outward at the side parallel to the moving direction of the second oil net, and the second arm is detachably connected to the second guide rod.

[0028] As a further improvement, a second rolled flange is formed at the end of the second arm, a second sleeve is provided inside the second rolled flange for the end of the second guide rod to pass through, and the outer peripheral wall of the second guide rod also has a second stop step for abutting against the end of the second sleeve.

[0029] Further improvement, the second oil net has a third side and a fourth side opposite to each other, the extension direction of the third side and the fourth side are parallel to the movement direction of the second oil net, the third side and the fourth side are provided with two second support arms extending outward, there are two guide modules, and the two second support arms are respectively connected to the second guide rods of the two guide modules.

[0030] Further improvement, the first oil net has a third flange and a fourth flange folded toward the side where the second oil net is located at positions corresponding to the third side and the fourth side of the second oil net, and the third flange and the fourth flange are provided with a detachable second mounting frame, and the guide module is abutted against the back side of the first oil net and fixed by the second mounting frame.

[0031] In order to match the left and right stoves at the bottom of the range hood and facilitate targeted air volume adjustment according to the cooking conditions on the left and right sides, the first oil net has a first air inlet area and a second air inlet area arranged in sequence along the first direction and both distributed with first air inlet holes, and there are two second oil nets arranged in sequence along the first direction, one of the second oil nets is opposite to the first air inlet area of ​​the first oil net, and the other second oil net is opposite to the second air inlet area of ​​the first oil net, and the two second oil nets are driven by the same driving mechanism and can move relative to the first oil net, thereby changing the air intake state of the air inlet area on the side where the second oil net is located. The two air inlet areas on the first oil net (i.e., the first air inlet area and the second air inlet area) can be two areas on an integrated oil net, or they can be air inlet areas corresponding to two independent sub-oil nets.

[0032] The technical solution adopted by the present invention to solve the second technical problem is:

[0033] A range hood comprises a casing, an air inlet is provided on the casing, an oil net is arranged at the air inlet, and the oil net adopts the above-mentioned oil net device for range hood.

[0034] Compared with the prior art, the advantages of the present invention are as follows: the second oil net of the oil net device is slidably connected to the first oil cup through a guide locking module. During the movement of the second oil net, not only can the flow distribution of the range hood be realized, but the user's cooking experience is optimized according to the actual cooking situation. On this basis, a press-type elastic locking structure is also arranged between the second oil net and the first oil net, so that the second oil net can stay in a locked state. In this way, the operator does not need to apply additional lateral force to the second oil net, so that the second oil net can be quickly separated from the first oil net, thereby improving the disassembly and assembly efficiency and facilitating the user to clean each part of the oil net device separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the oil screen device according to an embodiment of the present invention from the front view;

[0036] Figure 2 A rear view of the oil screen device according to an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the three-dimensional structure of the right part of the oil net device according to an embodiment of the present invention;

[0038] Figure 4 An exploded view of the right side of the oil screen device according to an embodiment of the present invention;

[0039] Figure 5 It is a rear view of the partial structure of the right side of the oil screen device according to the embodiment of the present invention (the sliding member is in the unlocked position);

[0040] Figure 6 It is a rear view of the partial structure of the right part of the oil screen device according to the embodiment of the present invention (the sliding member is in the middle position);

[0041] Figure 7 It is a rear view of the partial structure of the right side of the oil screen device according to the embodiment of the present invention (the sliding member is in the locked position);

[0042] Figure 8 is an exploded view of a guide locking module according to an embodiment of the present invention;

[0043] Fig. 9 It is a schematic diagram of the three-dimensional structure of the sliding member of the guide locking module according to an embodiment of the present invention;

[0044] Fig.10 It is an exploded view of the guide module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings.

[0046] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations 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.

[0047] Figure 1-Figure 10The oil net device for a range hood and a preferred embodiment of the range hood of the present invention are shown. The range hood includes a casing and a centrifugal fan arranged in the casing. The casing generally includes a fan frame and a smoke hood arranged at the bottom of the fan frame. The inner cavity of the fan frame is connected to the inner cavity of the smoke hood. An air inlet is provided on the front side wall of the smoke hood, and external smoke can enter the smoke hood through the air inlet. The centrifugal fan is arranged in the fan frame. When the centrifugal fan is in operation, negative pressure is generated, and external oil smoke can be sucked into the smoke hood through the air inlet. An oil net device is also provided at the air inlet of the smoke hood for filtering oil smoke. An oil cup is provided at the bottom of the smoke hood. The oil cup is in the shape of a long strip extending left and right, and is used to receive oil stains flowing down from the smoke hood.

[0048] Figure 1 and Figure 2 The schematic diagrams of the structure of the oil net device of the present embodiment at the front and back angles are shown respectively. The oil net device comprises a first oil net 10 and a second oil net 20 arranged at the back of the first oil net 10, that is, the first oil net 10 and the second oil net 20 are arranged in sequence along the air flow direction at the air inlet. The first oil net 10 is arranged with a first air inlet hole 100, and the second oil net 20 is arranged with a second air inlet hole 200, wherein the first air inlet hole 100 and the second air inlet hole 200 are both strip holes extending in the same direction. The first oil net 10 has a first air inlet area 101 and a second air inlet area 102 which are sequentially arranged along the first direction A1 and are evenly distributed with first air inlet holes 100. There are two second oil nets 20 which are sequentially arranged along the first direction A1, one of the second oil nets 20 is opposite to the first air inlet area 101 of the first oil net 10, and the other second oil net 20 is opposite to the second air inlet area 102 of the first oil net 10. More specifically, the first oil net 10 includes two sub-oil nets 11 sequentially arranged along the first direction A1, and the two sub-oil nets 11 constitute the first air inlet area 101 and the second air inlet area 102 of the first oil net 10. The second oil net 20 can be driven by a driving mechanism to move linearly relative to the first oil net 10 along the first direction A1, wherein the first direction A1 is parallel to the extension direction of the first oil net 10. When the second oil net 20 moves relative to the first oil net 10, the relative position of the second air inlet hole 200 on the second oil net 20 and the first air inlet hole 100 on the first oil net 10 changes. In this way, the overlapping area of ​​the first air inlet hole 100 and the second air inlet hole 200 in the flow direction of the air inlet changes, thereby achieving the purpose of adjusting the air intake volume.

[0049] One of the sub-oil nets 11 of the first oil net 10 and the corresponding second oil net 20 constitute an oil net unit. The oil net device of this embodiment includes two oil net units spliced ​​in sequence, and the two oil net units are arranged symmetrically. The movement of the second oil nets 20 of the two oil net units is independent of each other, and the adjustment of the air intake volume is also independent of each other, so that it can adapt to the cooking conditions on the left and right sides of the range hood. The two second oil nets 20 of this embodiment are driven by the same driving mechanism (not shown) and can move relative to the first oil net 10 (corresponding sub-oil net 11), thereby changing the air intake state of the air intake area on the side where the second oil net 20 is located. The driving mechanism is generally arranged in the area where the two oil net units are connected. The driving mechanism used to drive the second oil net 20 to move can adopt various motion mechanisms formed by the existing technology of the driving motor and the swing arm or cam transmission, such as the motion mechanism of the Chinese utility model patent application with application number CN202120687387.8 (authorization announcement number: CN215570676U).

[0050] See also Figure 3 and Figure 4 , taking an oil net unit formed by the cooperation of one of the sub-oil nets 11 of the first oil net 10 and the corresponding second oil net 20 as an example, the first oil net 10 (sub-oil net 11) has two opposite side edges in the first direction, and both of the two side edges have flanges folded and extended toward the side where the second oil net 20 is located, and the two flanges are respectively the first flange 12 and the second flange 13. The extension direction of the first flange 12 and the second flange 13 is perpendicular to the first direction A1. The first oil net 10 also has two opposite side edges in the direction perpendicular to the first direction A1, and both of the two side edges of the first oil net 10 have flanges folded and extended toward the side where the second oil net 20 is located, and the two flanges are respectively recorded as the third flange 14 and the fourth flange 15, and the extension direction of the third flange 14 and the fourth flange 15 is parallel to the first direction. The sides of the second oil net corresponding to the four flanges of the first oil net are respectively recorded as the first side 201, the second side 202, the third side 203 and the fourth side 204, wherein the extension directions of the first side 201 and the second side 202 are perpendicular to the first direction, and the extension directions of the third side 203 and the fourth side 204 are parallel to the first direction.

[0051] Guide modules and guide locking modules are correspondingly provided at the four corner positions or positions adjacent to the four corners on the back side of the first oil screen 10, wherein two guide modules 40 are respectively provided at the two corner area positions away from the driving mechanism, and two guide locking modules 30 are respectively provided at the two corner area positions adjacent to the driving mechanism.

[0052] The guide module 40 and the guide locking module 30 are both detachably connected to the back of the first oil net 10. The third side 203 and the fourth side 204 of the second oil net 20 are both provided with a first arm 21 and a second arm 22 which are arranged at intervals along the moving direction of the second oil net 20 and extend outward from the side. The two first arms 21 on the second oil net 20 are respectively connected to the two guide locking modules 30, and the two second arms 22 are respectively connected to the two guide modules 40.

[0053] The guide locking module 30 includes a first positioning seat 31, a sliding member 33, an elastic reset member 333 and a pull rod 334. The first positioning seat 31 is a long square structure as a whole, which includes a first seat body 314 and a first cover body 313. The first cover body 313 is connected to the first seat body 314 through a plurality of extended elastic buckles 3130. The first cover body 313 cooperates with the first seat body 314 to define a first slideway 310 extending along the first direction A1. The sliding member 33 includes a slider body 331 and a first guide rod 32 extending from the slider body 331 along the first direction. The slider body 331 of the sliding member 33 is axially slidably limited in the above-mentioned first slideway 310, and one end of the first guide rod 32 of the sliding member 33 is exposed outside the first slideway 310 and serves as a first connection end connected to the first arm 21 of the second oil net 20. The elastic return member 333 is preferably a first return spring, which is disposed in the first slideway 310, specifically between the slider body 331 and the inner wall of the limiting slideway 310 of the first positioning seat 31. Under the action of the first return spring, the first guide rod 32 (that is, the slide member 33) always has a tendency to move along the second direction A2, which is opposite to the first direction A1 and parallel to the extension direction of the second oil net 20.

[0054] See also Figure 5-Figure 9In this embodiment, a push-type elastic self-locking structure is provided between the sliding member 33 of the guide locking module 30 and the first positioning seat 31. The push-type elastic self-locking structure is configured as follows: the sliding member 33 can be pressed by an external force to move between a locking position and an unlocking position at a certain distance relative to the first positioning seat 31 in the first direction A1. The driving mechanism for driving the second oil net 20 to move is arranged adjacent to the first side edge 201. Specifically, the inner side of the first side edge 201 of the second oil net 20 has a pressing plate 26 that is folded inward and extends. The power output end of the driving mechanism can act on the pressing plate 26, thereby driving the second oil net 20 to move along the first direction A1. In particular, when the sliding member 33 moves to the locking position, the sliding member 33 (which can also be understood as the first side edge 201 of the second oil cup) is away from the driving mechanism, and when the sliding member 33 moves to the unlocking position, the sliding member 33 is close to the driving mechanism. More specifically, when the sliding member 33 is in the locked position, the distance between the end of the first guide rod 32 and the first flange 12 of the first oil net 10 is large enough to allow the first sleeve 23 of the second oil net 20 to be installed on the end of the first guide rod 32. That is, in this state, the distance L1 between the end of the first guide rod 32 and the first flange 12 of the first oil net 10 is greater than the distance L2 from the end of the first sleeve 23 of the second oil net 20 away from the first flange 12 to the first flange 12. It can also be understood that when the first side edge 201 of the second oil net 20 is abutted against the first flange 12 of the first oil net 10, the end of the first sleeve 23 of the second oil net 20 away from the first flange 12 is located on the left side of the end of the first guide rod 32 (that is, the side close to the first flange 12).

[0055] The slider body 331 of the sliding member 33 is provided with an annular track groove 332, and the track groove 332 has a stopper 3320. The first end and the second end of the pull rod 334 both have bent hooks, and the hook at the first end of the pull rod 334 is swingably connected to the insertion hole of the first positioning seat 31, and the hook at the second end of the pull rod 334 is a limiting convex part 3340. When the sliding member 33 moves relative to the first positioning seat 31, the limiting convex part 3340 is unidirectionally slidably constrained in the track groove 332. One side of the track groove 332 adjacent to the driving mechanism has a concave part inside the track groove 332 as a stopper 3320. In order to realize the unidirectional movement of the limiting protrusion 3340 of the pull rod 334 along the track groove 332, the track groove 332 includes a first guide section 3321, a second guide section 3322, a third guide section 3323 and a fourth guide section 3324 which are cyclically connected in sequence. The first guide section 3321 and the fourth guide section 3324 also have a first limiting step 3325 at the joint position for blocking the limiting protrusion 3340 of the pull rod from the first guide section 3321 to return to the fourth guide section 3324. The first guide section 3321 and the second guide section 3322 have a first limiting step 3325 at the joint position for blocking the limiting protrusion 3340 of the pull rod from the second guide section 3322 to return to the first The second limiting step 3326 in the guide section 3321 and the engaging position of the second guide section 3322 and the third guide section 3323 are arranged at an angle to define the above-mentioned stop portion 3320, and the second guide section 3322 and the third guide section 3323 also have a limiting protrusion 3340 at the engaging position for blocking the pull rod from the third guide section 3323 returning to the third limiting step 3327 in the second guide section 3322, and the engaging position between the third guide section 3323 and the second guide section 3322 has a limiting protrusion 3340 for blocking the pull rod from the fourth guide section 3324 returning to the fourth limiting step 3328 in the third guide section 3323. When the sliding member 33 is in the locked position, the second end of the pull rod 334 abuts against the stop portion 3320 of the sliding member 33 . When the sliding member 33 is in the unlocked position, the second end of the pull rod 334 disengages from the stop portion 3320 of the sliding member 33 . More specifically, in the process of the sliding member 33 moving from the unlocked position to the locked position or from the locked position to the unlocked position, there is also an intermediate position where the moving direction changes; when the sliding member 33 is in the unlocked position, the second air inlet hole 200 of the second oil net 20 is misaligned with the first air inlet hole 100 on the first oil net 10, so that the oil net device is in a closed state; when the sliding member 33 is in the locked position, the wall of the first oil net 10 blocks a portion of the second air inlet holes of the second oil net 20, and the wall of the second oil net 20 blocks a portion of the first air inlet holes 100 of the first oil net 10; when the sliding member 33 is in the intermediate position, the first air inlet holes 100 of the first oil net 10 are opposite to the second air inlet holes 200 of the second oil net 20, so that the oil net device is in a maximum open state.The above-mentioned structural design can not only realize the function of range hood flow distribution during the movement of the second oil net 20, but also optimize the user's cooking experience according to the actual cooking situation. On this basis, a push-type elastic locking structure is also arranged between the second oil net 20 and the first oil net 10, so that the second oil net 20 can stay in the locked state, so that the operator does not need to apply additional lateral force to the second oil net 20, so that the second oil net 20 can be quickly separated from the first oil net 10, thereby improving the disassembly and assembly efficiency and facilitating the user to clean each part of the oil net device separately.

[0056] The first oil net 10 is provided with a detachable first mounting frame 161 at positions corresponding to the two guide locking modules 30 of the second oil net 20, and the two first mounting frames 161 are respectively connected to the inner sides of the third flange 14 and the fourth flange 15 of the first oil net 10 by fasteners. The two guide locking modules 30 are attached to the back of the first oil net 10 and fixed by the above-mentioned first mounting frame 161. The first oil net 10 is provided with a detachable second mounting frame 162 at positions corresponding to the two guide modules 40 of the second oil net 20, one of the second mounting frames 162 is connected to the inner sides of the third flange 14 and the second flange 13 of the first oil net 10 by fasteners, and the other second mounting frame 162 is connected to the inner sides of the fourth flange 15 and the second flange 13 of the first oil net 10 by fasteners. The two guide modules 40 are attached to the back of the first oil net 10 and fixed by the above-mentioned first mounting frame 161.

[0057] Taking the right oil screen unit of the oil screen device as an example, the installation process is as follows:

[0058] 1. Place the guide locking module 30 at the corresponding position on the left side of the first oil screen 10 and position and install it through the first mounting frame 161. The guide module 40 on the right side is similarly installed through the second mounting frame 162.

[0059] 2. Press the end of the first guide rod 32 of the guide locking module 30 to push the sliding member 33 of the guide locking module 30 to the right, and the pull rod 334 moves along the track groove 332 of the sliding member 33 until it hooks the stopper 3320 of the track groove 332. At this time, the end of the first guide rod 32 of the guide locking module 30 is at a relatively large distance from the first flange 12 of the first oil net 10, which can facilitate the installation of the second oil net 20;

[0060] 3. Insert the second rolled flange 221 on the second arm 22 on the right side of the second oil net 20 into the second guide rod 42 of the corresponding guide module 40, and push the oil net to the right; then insert the first rolled flange 211 on the left side of the second oil net 20 into the first guide rod 32 of the corresponding locking guide module 40, and push the oil net to the right and then release it. The locking rod 334 moves along the track groove 332 and disengages from the stopper 3320. Then the sliding member 33 moves to the left under the action of the elastic reset member 333 until the second ventilation hole of the second oil net 20 and the first ventilation hole of the first oil net 10 are completely misaligned or completely overlapped. At this point, the right oil net unit of the oil net device is installed.

[0061] The user can choose to remove only the second oil screen 20 each time cleaning, that is, clean the second oil screen 20 and the first oil screen 10 with each guide module 40 and the guide locking module 30 separately. If the user wants to deeply clean the oil screen device and each guide module 40 and the guide locking module 30, he only needs to remove the corresponding first mounting frame 161 and the second mounting frame 162.

[0062] The guide module 40 includes a second positioning seat 41, a second guide rod 42 and a second elastic member 43. The second positioning seat 41 is a long square structure as a whole, which includes a second seat body 412 and a second cover body 411. The second cover body 411 is connected to the second seat body 412 through a plurality of extended elastic buckles. The second cover body 411 and the second seat body 412 cooperate to define a second slideway 410 extending along the first direction, wherein the second slideway 410 is a stepped channel structure (with two steps) with a large diameter in the middle and small diameters on the left and right sides. The second guide rod 42 is axially slidably limited in the above-mentioned second slideway 410, and one end is exposed outside the second slideway 410 and serves as a second connection end connected to the second arm 22 of the second oil net 20. The second elastic member 43 is preferably a second reset spring, which is arranged in the middle section of the second slideway 410 and is specifically sleeved outside the second guide rod 42. The second guide rod 42 has a second limit stopper protruding radially outward. The second return spring abuts between the second limit stop 420 of the second guide rod 42 and the inner wall of the second slideway 410 . Under the action of the second return spring, the second guide rod 42 always tends to move along the second direction.

[0063] The first support arm 21 of the second oil net 20 is detachably connected to the first connecting ends of the two first guide rods 32 , and the two second support arms 22 of the second oil net 20 are detachably connected to the second connecting ends of the two second guide rods 42 .

[0064] The end of the first arm 21 is formed with a first rolled flange 211, and the end of the first rolled flange 211 is also provided with a first limiting notch 2110. Due to the limitation of processing accuracy, the first rolled flange 211 cannot be directly inserted and matched with the end of the first guide rod 32, otherwise there is a problem of shaking. For this reason, a first sleeve 23 (preferably a plastic part) is provided in the first rolled flange 211 for the first connecting end of the first guide rod 32 to pass through. The first sleeve 23 includes a first sleeve body 231 and at least two first elastic arms 232 arranged in sequence along the circumference of the first sleeve body 231 and extending in the axial direction. Since the first elastic arms 232 can swing along, the internal space surrounded by each first elastic arm 232 can also shrink or expand radially. Each first elastic arm 232 also has a first convex portion 2320 protruding radially outward at a section away from the first sleeve body 231. The end of the first sleeve body 231 has a first limit stop edge 233 protruding radially outward. When the first sleeve 23 is installed in place in the first rolled flange 211, the first limit stop edge 233 abuts against the end of the first rolled flange 211, and the first protrusion 2320 of each first elastic arm 232 is correspondingly inserted into each first limit recess 2110 of the first rolled flange 211, thereby realizing the first rolled flange 211 to limit the first sleeve 23 in the axial and circumferential directions. When installing the guide locking module 30, the first connecting end of the first guide rod 32 can be directly inserted into the first sleeve 23. Similarly, the end of the second arm 22 is formed with a second rolled flange 221, and the end of the second rolled flange 221 is also provided with a second limit recess 2210. A second sleeve 25 (preferably a plastic part) is provided in the second round flange 221 for the second connecting end of the second guide rod 42 to pass through. The second sleeve 25 includes a second sleeve body 251 and at least two second elastic arms 252 which are arranged in sequence along the circumference of the second sleeve body 251 and extend in the axial direction. Since the second elastic arms 252 can swing, the internal space surrounded by the second elastic arms 252 can also shrink or expand in the radial direction. Each second elastic arm 252 also has a second positioning protrusion 2520 protruding radially outward at a section away from the second sleeve body 251. The end of the second sleeve body 241 has a second limit stop edge 253 protruding radially outward. When the second sleeve 25 is installed in place in the second rolled flange 221, the second limit stop 253 abuts against the end of the second rolled flange 221, and the second protrusions 2520 of each second elastic arm 252 are correspondingly inserted into each second limit notch 2210 of the second rolled flange 221, thereby realizing the axial and circumferential limit of the second sleeve 25 by the second rolled flange 221. When installing the guide module 40, the second connecting end of the second guide rod 42 can be directly inserted into the second sleeve 25.

[0065] On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the relevant technical features. For example, the above-mentioned guide module can also be replaced by a guide locking module, that is, the four corners of the first oil net are provided with guide locking modules. Of course, one of the above-mentioned two guide locking modules can also be replaced by a guide module, that is, one guide locking module and three guide modules are provided on the four corners of the first oil net.

Claims

1. An oil net device for a range hood, arranged at the air inlet of the range hood, comprising a first oil net (10) and a second oil net (20) arranged in sequence along the air flow direction at the air inlet, wherein the first oil net (10) is provided with a first air inlet hole (100), and the second oil net (20) is provided with a second air inlet hole (200), and the second oil net (20) is driven by a driving mechanism to move linearly along a first direction (A1) relative to the first oil net (10), thereby changing the relative position of the second air inlet hole (200) on the second oil net (20) and the first air inlet hole (100) on the first oil net (10); Features: The invention also includes a guide locking module (30) arranged on the back side of the first oil net (10), the guide locking module (30) including a first positioning seat (31) having a first slideway (310) and a sliding member (33) slidably arranged in the first slideway (310), the sliding direction of the sliding member (33) relative to the first positioning seat (31) is parallel to the first direction (A1), the sliding member (33) has a first connecting end extending out of the first positioning seat (31) and used to be connected to the second oil net (20), a press-type elastic self-locking structure is provided between the sliding member (33) and the first positioning seat (31), and the press-type elastic self-locking structure is configured as follows: the sliding member (33) can be pressed by an external force to move between a locked position and an unlocked position spaced a certain distance apart in the first direction (A1) relative to the first positioning seat (31).

2. The oil screen device for a range hood according to claim 1, characterized in that: In the moving direction of the second oil net (20), the second oil net (20) has a first side edge (201) and a second side edge (202) opposite to each other, and the driving mechanism is arranged adjacent to the first side edge (201). When the sliding member (33) moves to the locked position, the sliding member (33) moves away from the driving mechanism, and when the sliding member (33) moves to the unlocked position, the sliding member (33) moves closer to the driving mechanism.

3. The oil screen device for a range hood according to claim 2, characterized in that: The guide locking module (30) further comprises a pull rod (334) and an elastic reset member (333), the sliding member (33) comprises a slider body (331) and a first guide rod connected to the slider body (331), the slider body is slidably limited in the first slideway (310), the extension direction of the first guide rod (32) is parallel to the first direction (A1), the first guide rod (32) is exposed from the first positioning seat (31), and the end of the portion exposed from the first positioning seat (31) is connected to the second oil net (20), the slider body (331) is provided with an annular track groove (332), the track groove (332) has a stopper (3320), the first end of the pull rod (334) is swingably connected to the first positioning seat (31), the pull rod (33 4) has a second end with a limiting protrusion (3340). During the movement of the sliding member (33) relative to the first positioning seat (31), the limiting protrusion (3340) is constrained in the track groove (332) by unidirectional sliding. The elastic reset member (333) acts on the sliding member (33) and makes the sliding member (33) always have a tendency to move along the second direction (A2). The above-mentioned second direction (A2) is opposite to the first direction (A1). When the sliding member (33) is in the locked position, the second end of the pull rod (334) abuts against the stop portion (3320) of the sliding member (33). When the sliding member (33) is in the unlocked position, the second end of the pull rod (334) is disengaged from the stop portion (3320) of the sliding member (33).

4. The oil screen device for a range hood according to claim 3, characterized in that: A side portion of the track groove (332) adjacent to the driving mechanism has an inner recessed portion of the track groove (332) as the stopper (3320).

5. The oil screen device for a range hood according to claim 4, characterized in that: The track groove (332) comprises a first guide section (3321), a second guide section (3322), a third guide section (3323) and a fourth guide section (3324) which are cyclically connected in sequence. The first guide section (3321) and the fourth guide section (3324) also have a first limiting step (3325) at the joint position for blocking a limiting protrusion (3340) of the pull rod from returning from the first guide section (3321) to the fourth guide section (3324). The first guide section (3321) and the second guide section (3322) have a second limiting step (3325) at the joint position for blocking a limiting protrusion (3340) of the pull rod from returning from the second guide section (3322) to the first guide section (3321). 26), the engaging position of the second guide section (3322) and the third guide section (3323) is arranged at an angle to define the stop portion (3320), and the second guide section (3322) and the third guide section (3323) also have a third limiting step (3327) in the engaging position for blocking the pull rod from returning from the third guide section (3323) to the second guide section (3322), and the engaging position between the third guide section (3323) and the second guide section (3322) has a fourth limiting step (3328) in the third guide section (3323) for blocking the pull rod from returning from the fourth guide section (3324) to the third guide section (3323).

6. The oil screen device for a range hood according to claim 5, characterized in that: In the process of the sliding member (33) moving from the unlocking position to the locking position or from the locking position to the unlocking position, there is also an intermediate position where the moving direction changes; When the sliding member (33) is in the unlocking position, the second air inlet hole (200) of the second oil net (20) is misaligned with the first air inlet hole (100) on the first oil net (10), so that the oil net device is in a closed state; When the sliding member (33) is in the locked position, the wall of the first oil net (10) blocks a portion of each second air inlet hole of the second oil net (20), and the wall of the second oil net (20) blocks a portion of the first air inlet hole (100) of the first oil net (10); When the sliding member (33) is in the middle position, the first air inlet holes (100) of the first oil net (10) are opposite to the second air inlet holes (200) of the second oil net (20), so that the oil net device is in a maximum open state.

7. The oil screen device for a range hood according to claim 3, characterized in that: The elastic return member (333) is a compression spring, which is arranged in the first slideway (310) and abuts between the sliding member (33) and the inner wall of the first slideway (310) of the first positioning seat (31).

8. The oil screen device for a range hood according to claim 3, characterized in that: A first support arm (21) extending outward is provided on the side of the second oil net (20) parallel to the moving direction of the second oil net (20), and the first support arm (21) is detachably connected to the first guide rod.

9. The oil screen device for a range hood according to claim 8, characterized in that: A first rolled flange (211) is formed at the end of the first support arm (21), and a first sleeve (23) is arranged inside the first rolled flange (211) for the end of the first guide rod to pass through, and a first stop step (320) is also provided on the outer peripheral wall of the first guide rod for abutting against the end of the first sleeve (23).

10. The oil screen device for a range hood according to claim 9, characterized in that: The first sleeve (23) comprises a first sleeve body (231) and at least two first elastic arms (232) which are arranged in sequence along the circumference of the first sleeve body (231) and extend in the axial direction. Each of the first elastic arms (232) has a first positioning protrusion (2320) protruding radially outward at an end away from the first sleeve body (231). The end of the first sleeve body (231) has a first limiting stop edge (233) protruding radially outward. The end of the first rolled flange (211) is also provided with a first limiting recess (2110). When the first sleeve (23) is installed in place in the first rolled flange (211), the first limiting stop edge (233) abuts against the end of the first rolled flange (211), and the first positioning protrusion (2320) of each of the first elastic arms (232) is inserted into the first limiting recess (2110).

11. The oil screen device for a range hood according to claim 8, characterized in that: The second oil net (20) has a third side (203) and a fourth side (204) opposite to each other, and the extension directions of the third side (203) and the fourth side (204) are parallel to the moving direction of the second oil net (20), and the third side (203) and the fourth side (204) are both provided with two first arms (21) extending outwardly, and there are two guide locking modules (30), and the two first arms (21) are respectively connected to the first connecting ends of the sliding members (33) of the two guide locking modules (30).

12. The oil screen device for a range hood according to claim 11, characterized in that: The first oil net (10) has a third flange (14) and a fourth flange (15) folded toward the side where the second oil net (20) is located at positions corresponding to the third side (203) and the fourth side (204) of the second oil net (20), respectively. The third flange (14) and the fourth flange (15) are both provided with a detachable first mounting frame (161). The guide locking module (30) is attached to the back side of the first oil net (10) and is fixed by the first mounting frame (161).

13. The oil screen device for a range hood according to claim 1, characterized in that: The invention also includes a guide module (40) detachably connected to the back side of the first oil net (10), the guide module (40) including a second positioning seat (41), a second guide rod (42) and a second elastic member (43), the second positioning seat (41) having a second slideway (410) extending along the moving direction of the second oil net (20), the second guide rod (42) axially slidingly limited in the second slideway (410), and one end thereof is exposed outside the second slideway (410) and serves as a second connection end connected to the second oil net (20), the second elastic member (43) is arranged in the second slideway (410) and acts on the second guide rod (42), so that the second guide rod (42) always has a tendency to move in a direction opposite to the first direction (A1).

14. The oil screen device for a range hood according to claim 13, characterized in that: The second oil net (20) also has a second arm (22) extending outwards at a side edge parallel to the moving direction of the second oil net (20), and the second arm (22) is detachably connected to the second guide rod.

15. The oil screen device for a range hood according to claim 14, characterized in that: A second rolled flange (221) is formed at the end of the second support arm (22), and a second sleeve (25) is arranged inside the second rolled flange (221) for the end of the second guide rod to pass through, and a second stop step (420) is also provided on the outer peripheral wall of the second guide rod for abutting against the end of the second sleeve (25).

16. The oil screen device for a range hood according to claim 14, characterized in that: The second oil net (20) has a third side (203) and a fourth side (204) opposite to each other, and the extension directions of the third side (203) and the fourth side (204) are parallel to the movement direction of the second oil net (20), and the third side (203) and the fourth side (204) are both provided with two second support arms (22) extending outwards, and the guide modules (40) have two, and the two second support arms (22) are respectively connected to the second guide rods of the two guide modules (40).

17. The oil screen device for a range hood according to claim 16, characterized in that: The first oil net (10) has a third flange (14) and a fourth flange (15) folded toward the side where the second oil net (20) is located at positions corresponding to the third side (203) and the fourth side (204) of the second oil net (20), and a detachable second mounting frame (162) is provided on the third flange (14) and the fourth flange (15). The guide module (40) is attached to the back side of the first oil net (10) and is fixed by the second mounting frame (162).

18. The oil screen device for a range hood according to any one of claims 1 to 17, characterized in that: The first oil net (10) has a first air inlet area (101) and a second air inlet area (102) which are arranged in sequence along a first direction (A1) and are evenly distributed with first air inlet holes (100). There are two second oil nets (20) which are arranged in sequence along the first direction (A1), one of the second oil nets (20) is opposite to the first air inlet area (101) of the first oil net (10), and the other second oil net (20) is opposite to the second air inlet area (102) of the first oil net (10). The two second oil nets (20) are driven by the same driving mechanism and can move relative to the first oil net (10), thereby changing the air inlet state of the air inlet area on the side where the second oil net (20) is located.

19. A range hood, comprising a housing, an air inlet is provided on the housing, an oil net is provided at the air inlet, and the features are: The oil net adopts the oil net device for range hood according to any one of claims 1 to 18.

Images