Auxiliary filter device for roll screen type range hoods

Abstract

An auxiliary filter device for a roll screen type range hood is disclosed. The disclosed auxiliary filter device for a roll screen type range hood is characterized by comprising: a coupling panel portion that is detachably coupled and attached to one side of the lower surface of the range hood; a main body portion consisting of a first rotating support portion and a second rotating support portion that are installed perpendicular to both sides of the coupling panel portion and are configured to face each other at a predetermined distance apart; a rotating drum portion that is rotatably installed between the first rotating support portion and the second rotating support portion; a replacement filter sheet roll that is replaceable and attachable to the rotating drum portion in a manner into which the rotating drum portion is inserted, and in which the filter sheet is unwound as it rotates with the rotation of the rotating drum portion, covering the hood filter installed on the lower surface of the range hood and filtering oil in the air that is drawn in before the hood filter; and a filter fixing portion that is detachably coupled to the other side of the lower surface of the range hood and fixes and supports the free end of the filter sheet so as to maintain the state in which the filter sheet covers the hood filter.

Description

Technical Field

[0001] The present invention relates to an auxiliary filter device for a range hood. More specifically, by being easily attached to a range hood and installed so as to cover the hood filter of the range hood by spreading a filter sheet in a roll screen type, the cleaning and replacement cycles for the hood filter of the range hood can be extended, and the range hood can be used more hygienically. The present invention relates to a roll screen type auxiliary filter device for a range hood.

Background Art

[0002] Generally, a range hood is a ventilation device that discharges air containing odors generated in the kitchen, such as odors generated when cooking, to the outside, and is installed above or around heating cooking appliances such as gas ranges and induction cooktops.

[0003] Such a range hood is configured such that an air inlet is formed on the lower surface, an exhaust port is formed on the upper part, and an exhaust fan is provided inside the hood body. By driving the exhaust fan, air containing odors is inhaled through the air inlet and discharged through the exhaust port. At the same time, when cooking, a lighting lamp is provided on the lower surface of the hood body to illuminate the cooking.

[0004] Also, a range hood is provided with a hood filter at the air inlet, and oil and contaminants contained in the air are filtered by the hood filter, and only the air filtered by the oil and contaminants is exhausted.

[0005] However, in such a conventional range hood, since oil and contaminants are constantly filtered by the hood filter, oil accumulates on the hood filter in a short period of time, the filter performance of the hood filter is reduced, and the oil gathers and falls on the sink countertop or the pan, causing a very unhygienic problem.

[0006] Furthermore, because the hood filter becomes contaminated in such a short time, the cleaning cycle for the hood filter is shortened, the hood filter deteriorates quickly, and the replacement cycle is also shortened, resulting in a reduced lifespan for the hood filter.

[0007] Furthermore, because contaminants such as oil accumulate quickly on the hood filter, the probability of a fire starting from the oil on the hood filter increases, significantly reducing the fire safety of the kitchen. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Korean Registered Patent Publication No. 10-1852796 [Patent Document 2] Korean Registered Utility Model Publication No. 20-0481659 [Patent Document 3] Korean Registered Patent Publication No. 10-1016244 [Overview of the project] [Problems that the invention aims to solve]

[0009] This invention was devised to solve the aforementioned problems of the conventional methods, and aims to provide a roll-screen type auxiliary filter device for range hoods that can be easily attached to a range hood and installed by unfolding a filter sheet in a roll-screen manner to cover the hood filter installed in the range hood itself, thereby extending the cleaning and replacement cycle of the range hood's hood filter and enabling more hygienic use of the range hood.

[0010] Furthermore, another objective of the present invention is to provide an auxiliary filter device for a roll screen type range hood that reduces the user's purchasing burden by making the filter sheet roll into a filter cartridge, allowing only the filter sheet roll to be easily replaced and installed. In addition, it improves ease of use by enabling even ordinary people who are not experts to easily replace and install the filter sheet roll on the main unit.

[0011] Furthermore, the present invention aims to provide an auxiliary filter device for a roll screen type range hood that not only allows for easy adjustment of the tension of the filter sheet roll, but also extends the lifespan of the filter sheet roll and reduces the replacement cycle, thereby reducing the inconvenience for the user of replacing the filter sheet roll, by allowing the filter sheet roll to be unraveled at predetermined intervals and easily cut for reuse.

[0012] However, the objectives of the present invention are not limited to these, and of course, they also include objectives and effects that can be understood from the means of solving the problem and the embodiments, even without explicit mention. [Means for solving the problem]

[0013] To achieve the above objectives, the present invention provides an auxiliary filter device for a roll screen type range hood, comprising: a main body consisting of a coupling panel portion detachably coupled and attached to one side of the lower surface of the range hood, and a first rotating support portion and a second rotating support portion installed perpendicular to both sides of the coupling panel portion and configured to face each other at a predetermined distance apart; a rotating drum portion rotatably installed between the first rotating support portion and the second rotating support portion; a replacement filter sheet roll that can be replaced and attached to the rotating drum portion in a manner into which the rotating drum portion is inserted, and which unwinds the filter sheet as it rotates along with the rotation of the rotating drum portion to cover the hood filter installed on the lower surface of the range hood and to filter out oil in the air that is drawn in before the hood filter; and a filter fixing portion detachably coupled to the other side of the lower surface of the range hood and fixing and supporting the free end of the filter sheet so as to maintain the state in which the filter sheet covers the hood filter.

[0014] The system may be further configured to include a tension adjustment unit located on one side of the main body, which rotates the rotating drum by the user's rotational operation to adjust the tension of the filter sheet.

[0015] Each of the main body, the rotating drum, and the filter fixing part can be configured to have its length adjustable according to the width of the filter sheet roll.

[0016] The main body portion may be configured with a first coupling means that can be detachably coupled to one side of the lower surface of the range hood, and the filter fixing portion may be configured with a second coupling means that can be detachably coupled to the other side of the lower surface of the range hood.

[0017] The filter sheet roll may be made of polycarbonate material and include a tubular roll shaft into which the rotating drum portion is inserted, and a filter sheet formed in a roll shape wound around the roll shaft and configured to be unwound from the roll shaft.

[0018] The rotating drum section may be configured to include: a drum body made of metal, formed in a tubular shape, and inserted and coupled to the roll shaft; a rotating shaft section coupled to one side of the drum body and installed to be connected to the first rotating support section; and a variable-length shaft module coupled to the other side of the drum body and installed to be connected to the second rotating support section, and configured to change its length so as to easily separate and connect the rotating drum section.

[0019] The filter fixing portion may be configured to include: a filter fixing frame which is coupled and installed on the lower surface of the range hood, has a sheet slit hole through which the free end of the filter sheet passes, and has a filter fixing surface configured such that the filter sheet is fixed to the sheet slit hole; and a filter fixing member which is installed to connect both ends of the filter fixing frame and has pressure wings for pressurizing and fixing the filter sheet to the filter fixing surface while the filter sheet passes through the sheet slit hole.

[0020] The pressure vane is configured to be inclined toward the sheet withdrawal direction in which the filter sheet is unwound and passes through the sheet slit hole, allowing the filter sheet to move in the sheet withdrawal direction, but restricting its movement in the opposite direction.

[0021] The filter fixing portion may be installed on the filter fixing frame and may further include a cutting means for cutting the filter sheet.

[0022] The cutting means can be configured to include a sliding member configured to be slidable along a rail configured along the length direction at the lower end of the filter fixing frame, and a cutter blade configured on the sliding member to cut the filter sheet while moving together with the sliding member.

[0023] A cutter guide portion can be configured in the sheet slit hole to guide the movement of the cutter blade so that the filter sheet is cut.

Advantages of the Invention

[0024] According to the above, the present invention can be mounted and installed to cover the hood filter of the range hood, so that contaminants such as oil generated during cooking are first filtered by the filter sheet of the present invention and then filtered by the hood filter, and the replacement cycle and cleaning cycle of the hood filter can be significantly extended compared to the existing ones, thereby enabling the user to more easily manage the hood filter.

[0025] In addition, the present invention is configured in a roll screen installation method in which the filter sheet is unrolled with a filter sheet roll and installed to cover the hood filter of the range hood. Therefore, regardless of the size of various hood filters, it can be applied and used for all types of range hoods, thus achieving the effect of greatly improving the compatibility.

[0026] Particularly, the present invention can be easily attached to and used on the range hood, and can also be easily purchased only the filter sheet roll in the concept of a filter cartridge, and the remaining components can be reused and continuously replaced for use. Therefore, while greatly reducing the burden on the purchaser, the user can use the auxiliary filter device more economically.

[0027] Furthermore, since the filter sheet can be unwound several times from the filter sheet roll and fixed to the filter fixing part, even if only one filter sheet roll is replaced, when the filter sheet reaches the end of its lifespan, additional filter sheets can be unwound from the filter sheet roll and used to cover the hood filter. Moreover, the ends of the filter sheet can be easily fixed to the filter fixing part, and the used filter sheet portion can be easily cut and disposed of, thus greatly improving the convenience of use.

[0028] Furthermore, the present invention includes a tension adjustment unit that allows the user to appropriately adjust the tension of the filter sheet unwound from the filter sheet roll. By holding the filter sheet in a taut state and positioning and attaching it to the bottom of the hood filter, the filtering effect is improved. The filter sheet can be kept firmly attached without flapping or moving when the range hood is in operation or stopped. Additionally, it prevents damage to the rotating part of the rotating drum from occurring due to unwinding the filter sheet several times, thus preventing malfunctions. [Brief explanation of the drawing]

[0029] [Figure 1] This is a separated perspective view of an auxiliary filter device for a roll screen type range hood according to one embodiment of the present invention. [Figure 2] Figure 1 is a perspective view of the separated main body. [Figure 3] This is a separated perspective view of the rotating drum section shown in Figure 1. [Figure 4] This is a cross-sectional view of an auxiliary filter device for a roll screen type range hood according to one embodiment of the present invention, with the rotating drum attached to the main body. [Figure 5] This is a side cross-sectional view of the main body of the tension adjustment unit of the present invention, illustrating its configuration. [Figure 6] This is a cross-sectional view showing the joint between the rotating drum section and the filter sheet roll of the present invention. [Figure 7]Figure 1 is a separated perspective view of the filter fixing section. [Figure 8] This is a longitudinal cross-sectional view of the filter fixing part of the present invention. [Figure 9] This is a drawing showing the side portion of the filter fixing frame of the filter fixing part of the present invention. [Figure 10] This is a cross-sectional view of the filter fixing part of the present invention. [Figure 11] This is an illustrative diagram of the use of the auxiliary filter device for a roll screen type range hood according to the present invention. [Modes for carrying out the invention]

[0030] The aforementioned objectives, other objectives, features, and advantages of the present invention should be readily apparent from the following preferred embodiments relating to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments presented herein are provided so that the disclosed content may be thorough and complete, and so that the idea of ​​the present invention may be fully conveyed to those skilled in the art.

[0031] In this specification, when one component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component can be interposed between them. Furthermore, in the drawings, the thickness of components is exaggerated for the sake of effective illustration of the technical content.

[0032] The embodiments described herein are explained with reference to cross-sectional and / or plan views, which are ideal illustrative diagrams of the invention. In the drawings, the thickness of films and regions is exaggerated for the effective explanation of the technical content. Therefore, the morphology of the illustrative diagrams may be altered by manufacturing techniques and / or tolerances. Thus, embodiments of the invention are not limited to the specific morphologies shown, but also include variations in morphology produced by the manufacturing process. For example, an etched region shown at a right angle may be rounded or have a predetermined curvature. Therefore, the regions illustrated in the drawings have attributes, and the patterns of the regions illustrated in the drawings are for illustrating specific morphologies of regions of the element, and are not intended to limit the scope of the invention. In the various embodiments herein, terms such as "first," "second," etc., are used to describe various components, but these components are not limited by such terms. These terms are used merely to distinguish one component from another. The embodiments described and illustrated herein also include complementary embodiments thereof.

[0033] The terms used herein are for illustrative purposes only and do not limit the invention. In this specification, singular terms include plural terms unless otherwise specified in the document. The terms “comprises” and / or “comprising” used in the specification do not exclude the presence or addition of one or more other components of the components mentioned.

[0034] In describing the following specific embodiments, various specific details have been added to more concretely explain the invention and aid in understanding. However, readers with sufficient knowledge of the art to understand the invention may recognize that it can be used without these various specific details. In some cases, when describing the invention, it should be noted that parts that are well known but not significantly related to the invention have been omitted to avoid causing unnecessary confusion when explaining the invention.

[0035] The following describes an auxiliary filter device for a roll screen type range hood according to one embodiment of the present invention, with reference to Figures 1 to 11.

[0036] The auxiliary filter device 100 for a screen-type range hood of the present invention is configured to include a main body 110, a rotating drum 120, a filter sheet roll 130, and a filter fixing part 200.

[0037] The main body 110 is configured to include a hood coupling panel 111 attached to one side of the lower surface of the range hood h to attach the auxiliary filter device 100 to the range hood h, and a first rotation support part 113 and a second rotation support part 114 which are coupled to and installed perpendicular to both ends of the hood coupling panel 111 and are configured to face each other.

[0038] In the present invention, the hood coupling panel 111 may be a single unit or may be configured to be adjustable in length.

[0039] The hood coupling panel 111 consists of a "┐" shaped panel with a right-angle cross-section, and coupling means 119 for coupling to the lower surface of the range hood h are provided on the upper surface.

[0040] The coupling means 119 is configured to include a clip 119a into which the upper end of the hood coupling panel 111 is fitted, and an adhesive member 119b which is coupled to the upper end of the clip 119a and fixes the clip 119a to the lower surface of the range hood h.

[0041] The adhesive member 119b may be composed of various adhesive means such as magnets or double-sided tape. Furthermore, in the present invention, the coupling means 119 may be further configured as a locking member 119c which is bent at a right angle to the upper part of the rear end of the clip 119a and locked to one side of the range hood h to prevent the hood coupling panel 111 from being separated from the range hood h.

[0042] The coupling means 119 of the present invention is not limited to consisting of a clip 119a, an adhesive member 119b, and a locking member 119c, but is applicable as long as it is configured in the main body 110 and the main body 110 can be detachably coupled to the range hood.

[0043] Although not shown in the diagram, if the main body 110 is made of a synthetic resin material such as plastic, when the main body 110 is manufactured by plastic molding such as injection molding, a metal plate that adheres to a magnet can be inserted and injected so that the metal plate is integrated with the main body 110. In this way, the insert metal plate inserted into the main body 110 can be configured as the bonding means, and an attachment member such as a magnet can be attached to this metal plate by magnetic force, thereby bonding the main body 110 to the range hood by magnetic force.

[0044] Furthermore, the coupling means 119 can be composed solely of adhesive members such as double-sided tape or magnets, and the adhesive members can be configured to directly connect the hood coupling panel 11 and the range hood h. Of course, it can also be composed of various other coupling means, such as pieces (screws) or bolts, that can connect the hood coupling panel 111 to the range hood h.

[0045] Furthermore, the hood coupling panel 111 can be configured such that when its upper surface is attached to the rear lower surface of the range hood h, its back surface is in close contact with the kitchen wall on which the lens hood h is installed. By also providing coupling means on the back surface of the hood coupling panel 111, the back surface of the hood coupling panel 111 can be attached to the kitchen wall, thereby more firmly fixing the main body 110 to the range hood h.

[0046] In this invention, the hood coupling panel 111 may consist of a single panel with a fixed length, or it may be configured in a way that allows its length to be adjusted according to the width and length of the filter sheet roll 120.

[0047] As shown in Figures 1 and 2, the hood coupling panels 111 can consist of a pair on both the left and right sides, and can be configured to be connected between them by a coupling panel 112 that is length-adjustable.

[0048] Each hood coupling panel 111 is fitted with a connecting panel 112, and a panel coupling groove 111a is formed so that the length of the hood coupling panel 111 can be adjusted depending on the degree to which it is inserted.

[0049] After adjusting the depth to which the connecting panel 112 is inserted into the panel coupling groove 111a, the overlapping portions of the connecting panel 112 and the hood coupling panel 111 can be joined together with a piece or the like to fix the adjusted length.

[0050] The first rotation support portion 113 is located at one end of the hood coupling panel 111, and an axial hole 113a is provided on its inner surface.

[0051] The second rotation support portion 114 is located at the other end of the hood coupling panel 111. A wheel housing groove 115 is formed on the inner surface of the second rotation support portion 114, a wheel shaft groove 115a is formed in the central inner part of the wheel housing groove 115, and a button movement hole 115b is formed in the left-right direction at the lower end of the wheel housing groove 115.

[0052] Furthermore, the second rotation support section 114 is configured with a cover plate 116 that is coupled and installed to cover the wheel housing groove 115, and an axle insertion opening 116a is formed in this cover plate 116.

[0053] The rotating drum section 120 is installed between the first rotating support section 113 and the second rotating support section 114, and is configured to be rotatable relative to the first rotating support section 113 and the second rotating support section 114. A replacement filter sheet roll 130 is fitted into it, and the configuration allows the filter sheet roll 130 to be unrolled in a roll screen manner.

[0054] The rotating drum section 120 is made of a metal material such as aluminum, is formed in a tubular shape, and includes a drum body 121, a rotating shaft section 124 which is coupled to one side of the drum body 121 and installed to connect to the first rotating support section 113, and a variable-length shaft module 125 which is coupled to the other side of the drum body 121 and installed to connect to the second rotating support section 114, and is configured to change in length so as to easily separate and connect the rotating drum section 120.

[0055] The drum body 121 may consist of a single drum body with a fixed length, or it may be configured in a way that allows for length adjustment.

[0056] Referring to Figure 3, the drum bodies 121 of the present invention can be installed in pairs on both the left and right sides, and can be configured to be connected by connecting rods 122 that are connected between them to adjust the length. The drum bodies 121 and the connecting rods 122 are configured to be connected to each other by connecting brackets 123.

[0057] The connecting bracket 123 can be configured with fitting portions 123a and 123b on both sides, with one side being inserted into and fitted into the drum body 121, and the other side being inserted into and fitted into the connecting rod 121.

[0058] In this invention, the drum body 121, connecting rod 122, and connecting bracket 123 are configured with rotation-restricting projections and rotation-restricting grooves to prevent relative rotation of each other. At the connecting portion, the rotation-restricting projections are inserted into the rotation-restricting grooves to connect them so that they do not rotate relative to each other.

[0059] Specifically, rotation-restricting protrusions 121a and 122a are formed along the length direction on the inner circumferential surfaces of the drum body 121 and the connecting rod 122, and rotation-restricting grooves 123c are formed on the outer circumferential surfaces of the connecting bracket 123 in the fitting portions 123 and 123b formed on both sides, into which the rotation-restricting protrusions 121a and 122a are inserted.

[0060] On the other hand, to prevent the drum body 121 from rotating relative to the filter sheet roll 130 while it is inserted, first anti-rotation grooves 121b and 122b are formed in the longitudinal direction on the outer circumferential surfaces of the drum body 121 and the connecting rod 122, respectively, and a second anti-rotation groove 123d is formed in the middle portion of the connecting bracket 123, which is connected to the first anti-rotation grooves 121b and 122b formed on the drum body 121 and the connecting rod 122.

[0061] The rotating shaft portion 124 is inserted and coupled to one side of the drum body 121, and is configured to form a rotating shaft on the side of the drum body 121. The inner part has a coupling projection 124a that is inserted and coupled to the drum body 121, and the shaft 123b protrudes outwards.

[0062] A second rotation restricting groove 124c is also formed on the outer circumferential surface of the connecting projection 124a, into which a rotation restricting projection 121a formed on the inner circumferential surface of the drum body 121 is inserted, so that relative rotation does not occur when the rotating shaft portion 124 and the drum body 121 are connected.

[0063] By inserting the shaft 123b into the shaft hole 113a, one side of the drum body 121, to which the filter sheet roll 130 is attached, is configured to rotate relative to the first rotation support part 113.

[0064] The variable-length shaft module 125 is attached to the other side (right end) of the drum body 121 and is configured so that the length of the shaft can be increased or decreased. After shortening the length of the shaft and connecting it to the second rotation support part 114, the rotation shaft member 124 attached to one side of the drum body 121 can be inserted and connected to the shaft hole 113a formed in the first rotation support part 113.

[0065] Referring to Figures 3 and 4, the variable axis module 125 includes an axis guide 126, a movable axis 127, and an elastic member 128.

[0066] The shaft guide 126 consists of a tubular body with a guide hole 126a formed inside along its length to guide the linear movement and rotation of the movable shaft 127. The intermediate portion has a forced-fitting section 126b that is forcibly fitted into the open other side (right end) of the drum body 121. An extension tube section 126c is formed at the inner end of this forced-fitting section 126b, which is inserted into the elastic member 128, allowing for more stable linear movement and rotation of the movable shaft 127.

[0067] A third rotation restricting groove 126d is provided at the outer end of the forced fitting portion 126b. When the forced fitting portion 126b is fitted into the drum body 121, a rotation restricting projection 121a is inserted to restrict the forced fitting portion 126b from rotating relative to the drum body 121.

[0068] The movable shaft 127 is inserted into the shaft guide 126, i.e., into the guide hole 126a, and is configured to slide linearly along the guide hole 126a or to rotate relative to the guide hole 126a. A spring fixing groove 127a is formed at the inner end into which the inner end of the elastic means 128 is inserted to fix its position, and a key portion 127b is formed at the outer end.

[0069] The elastic member 128 is made of a coil spring, with a movable shaft 127 inserted inside and an extension tube portion 126c inserted into its outer part. One end of the elastic member 128 is inserted into and fixed in a spring fixing groove 127a, and the other end of the elastic member 128 is fixed to the outer end of the extension tube portion 126c.

[0070] The variable-length shaft module 140 allows the overall length of the rotating drum section 120 to be shortened as the elastic member 128 extends while the movable shaft 127 penetrates deeper into the drum body 121 when the movable shaft 127 is pushed. When the external force pushing the movable shaft 127 is removed, the elastic restoring force of the elastic member 128 returns it to its original position, allowing the rotating drum section 120 to be easily attached to the first rotation support section 113 and the second rotation support section 114.

[0071] The variable-length shaft module 125 can be installed by fitting the forced-fitting portion 126b into the right end of the drum body 121, and the key portion 127b is connected to the second rotation support portion 114, but it can be configured to be connected by a key coupling. Specifically, the key portion 127b is configured to be key-coupled to the tension adjustment portion 140 provided on the second rotation support portion 114.

[0072] Furthermore, when the movable shaft 127 rotates relative to the drum body 121, the elastic member 128 is configured to twist, generating an elastic force that attempts to cause the movable shaft 127 to rotate back to its original position.

[0073] In other words, when the rotating drum section 120 is mounted between the first rotating support section 113 and the second rotating support section 114, and the filter sheet roll 130 mounted on the rotating drum section 120 is unwound, the drum body 121 rotates relative to the movable shaft 127, and the elastic member 127 twists, providing elasticity that causes the filter sheet roll 120 to rotate back to its original state. At this time, when the free end of the filter sheet 133 unwound by the filter sheet roll 130 is fixed to the filter fixing section 200 which is fixed to the other end of the lower surface of the range hood, tension is generated in the filter sheet 133.

[0074] The filter sheet roll 130 is configured to include a roll shaft 131 and a roll of filter sheet 133 wound around the roll shaft 131.

[0075] Referring to Figures 3 and 6, the roll shaft 131 is made of polycarbonate material and is formed in a tubular shape so that the drum body 121 is inserted and connected to it. The inner circumferential surface is configured with anti-rotation projections 132 that are inserted into first anti-rotation grooves 121b and 122b formed in the drum body 121 and the connecting rod 122, and into a second anti-rotation groove 123d formed in the connecting bracket 123, so as to rotate relative to the drum body 121 along the longitudinal direction.

[0076] The filter sheet 133 is configured to be unwound by the rotation of the roll shaft 131.

[0077] As shown in Figure 11, the present invention involves attaching a rotating drum section 120, on which a filter sheet roll 130 is mounted, to a main body section 110, then attaching and fixing the main body section 110 to one side (rear side) of the lower surface of the range hood h, and attaching and fixing the filter fixing section 200 to the other side (front side) of the lower surface of the range hood h. In this state, after pulling and unwinding the filter sheet 133 from the filter sheet roll 130, the free end of the filter sheet 133 is fixed to the filter fixing section 200. This allows the filter sheet 133 to cover the hood filter f of the range hood from below, so that gas containing contaminants such as oil generated during cooking is first filtered by the filter sheet 133 before being supplied to the hood filter f.

[0078] On the other hand, the present invention can also be used by first fixing the main body 110 to one side of the lower surface of the range hood h, and fixing the filter fixing part 200 to the other side of the lower surface of the range hood h, then attaching the rotating drum part 120 to which the filter sheet roll 130 is attached to the main body 110, and then pulling the filter sheet 133 to fix the end (free end) of the filter sheet 133 to the filter fixing part 200.

[0079] In this invention, by replacing and attaching only the filter sheet roll 130 to the rotating drum section 120, the remaining main body section 110, rotating drum section 120, and filter fixing section 200 can be reused semi-permanently.

[0080] In the present invention, the filter sheet 133 configured on the filter sheet roll 130 may be configured to be long enough to cover the food filter f once, but it may also be configured to be long enough to cover the food filter f multiple times. In this case, if the filter sheet 133 is unfolded several times to cover the food filter f while the filter sheet roll 130 is mounted on the rotating drum section 120, the elastic member 128 configured on the length variable shaft module 125 may twist excessively, causing damage to the connected components and potentially leading to a malfunction of the device.

[0081] Therefore, the present invention is configured such that the tension of the filter sheet 133 can be adjusted by rotating the rotating drum 120 through the user's operation, by providing a tension adjustment unit 140 in the main body 110.

[0082] The tension adjustment section 140 is located on the second rotation support section 114 of the main body section 110 and is configured to include a tension adjustment wheel 141, a ratchet gear 142, an axial coupling hole 143, a sliding button 145, an elastic means 146, and a stopper 147.

[0083] The tension adjustment wheel 141 is housed in a wheel housing groove 115 formed on the inner surface of the second rotation support portion 114 and is configured to be rotatable. At this time, a wheel shaft 141a is formed at the outer center of the tension adjustment wheel 141, and this wheel shaft 141 is inserted into a wheel shaft groove 115a formed in the wheel housing groove 115, so that the tension adjustment wheel 141 can rotate within the wheel housing groove 115.

[0084] Furthermore, the surrounding portion of the tension adjustment wheel 141 is exposed to the outside by a wheel exposure portion 114a, which is configured to be connected to the wheel housing groove 115 on one surface of the second rotation support portion 114, so that the user can rotate the tension adjustment wheel 141 which is exposed to the outside via the wheel exposure portion 114a.

[0085] The ratchet gear 142 is configured to be integrally formed with the side of the tension adjustment wheel 141.

[0086] The shaft coupling hole 163 is formed through the center of the tension adjustment wheel 141 and is configured so that the key portion 127b is inserted and the shaft is coupled to it.

[0087] At this time, the movable shaft 127 of the length-adjustable module 125 is inserted through the shaft insertion opening 116a formed in the cover plate 116, and the key portion 127b is inserted into the shaft coupling hole 163 to key-couple it. As a result, when the tension adjustment wheel 141 is rotated, the movable shaft 127 of the length-adjustable module 125 rotates together with it.

[0088] The sliding button 145 is configured to slide left and right along a button movement hole 115b that is connected to the wheel housing groove 115 on the lower side of the second rotation support portion 114.

[0089] The stopper 147 is located at the upper end of the sliding button 145 and is connected to the sliding button 145 so as to move up and down relative to it. An elastic means 146 consisting of a coil spring is located between the sliding button 145 and the stopper 147, so that the stopper 147 is elastically supported on the upper side of the sliding button 145 by the elastic means 146.

[0090] The latch 147 is configured to engage with the ratchet gear 142, preventing the ratchet gear 142 from rotating in any other direction. Referring to Figure 5, when the user pushes the tension adjustment wheel 141 in one direction, i.e., upward, to rotate it, the ratchet gear 142 also rotates. As a result, the latch 147 is pushed downward by the teeth of the ratchet gear 142 and then sequentially inserted into the teeth of the ratchet gear 142 by the elastic force of the elastic means 146. This process is repeated as the wheel rotates, and the teeth of the ratchet gear 142 engage with the latch 147, preventing the tension adjustment wheel 141 from rotating downward. The operation of the ratchet gear 142 and the latch 147 in this manner is identical to that of a freewheel mechanism.

[0091] In this invention, when the sliding button 145 is moved to the right side of the button movement hole 116b, the retaining clip 147 is also moved to the right side and disengaged from the ratchet gear 142, so that the tension adjustment wheel 141 can rotate freely in one direction (upwards) or the other direction (downwards). When the sliding button 145 is moved to the left side of the button movement hole 116b, the retaining clip 147 is also moved to the left side and gear-connected to the teeth of the ratchet gear 142, so that it can rotate only in one direction (upwards).

[0092] When the part of the filter sheet 133 that is installed to cover the hood filter f has reached the end of its lifespan and the filter sheet 133 needs to be pulled out, the user first moves the sliding button 145 to the right of the button movement hole 116b to disengage the stopper 147 from the ratchet gear 142. Once the gear connection is released, the elastic restoring force of the twisted elastic member 128 causes the movable shaft 127 to rotate relative to the rotation shaft guide 126 together with the tension adjustment wheel 141, releasing the twist of the elastic member 128 and releasing the tension of the filter sheet 133.

[0093] In this state, the sliding button 145 is moved to the left so that the stopper 147 is reconnected to the ratchet gear 142. Then, the filter sheet 133 can be pulled out and unwound using the filter sheet roll 130 and fixed to the filter fixing part 200. In this state, the tension adjustment wheel 141 is rotated to rotate the movable shaft 127, thereby adjusting the degree of twist of the elastic member 128 and thus adjusting the tension of the filter sheet 133.

[0094] The filter fixing part 200 is detachably connected to the other side of the lower surface of the range hood and is configured to fix and support the free end of the filter sheet 133 so as to maintain the state in which the filter sheet 133 covers the hood filter f.

[0095] Referring to Figures 7 to 10, the filter fixing section 200 is configured to include a filter fixing frame 210 fixed to the other side of the lower surface of the range hood h, a filter fixing member 220 configured along the length of the filter fixing frame 210 for fixing the filter sheet 133, and a cutting means 230 installed on the filter fixing frame 210 for cutting the filter sheet 133.

[0096] In the present invention, the filter fixing frame 210 may consist of a single filter fixing frame with a fixed length, or, as shown in the figure, it may consist of a plurality of filter fixing frames 211, 212, and be configured in a way that allows the length to be adjusted according to the width and length of the filter sheet roll 120.

[0097] A connecting means 213 can be provided at the opposing ends of the filter fixing frames 211 and 212, allowing multiple filter fixing frames 211 and 212 to be connected and joined to each other. This connecting means 213 can consist of a connecting projection and a connecting groove, and a connecting projection can be provided on one side of the opposing ends of multiple filter fixing frames 211 and 212, while a connecting groove can be provided on the other side, allowing them to be connected to each other.

[0098] The length of the filter fixing frame can be adjusted by changing the number of filter fixing frames 211 and 212 connected together. For example, filter fixing frames of various lengths can be constructed by directly connecting the filter fixing frames 211 on both sides, or by connecting the first filter fixing frames 211 on both sides with the second filter fixing frame 212 in between.

[0099] The filter fixing frame 210 has fitting fixing holes 211a on both sides of its upper part, and coupling means 217 for connecting the filter fixing frame 210 to the range hood h can be provided in these fitting fixing holes 211a. These coupling means 217 can be fitted into the fitting fixing holes 211a and have an adhesive member (not shown) such as double-sided tape or a magnet on one side to connect the filter fixing frame 210 to the range hood h.

[0100] The filter fixing frame 210 is formed to extend from front to back along its length from left to right, and has a sheet slit hole 215 through which the filter sheet 133 passes. At the upper end of this sheet slit hole 215, a filter fixing surface 215a and a cutter guide portion 215b are formed so as to be separated by a predetermined distance in the front-to-back direction. Each of these filter fixing surface 215a and cutter guide portion 215b is formed to extend along the left-to-right length direction at the upper end (ceiling surface) of the sheet slit hole 215.

[0101] Furthermore, the filter fixing frame 210 has a rail portion 214 located below the sheet slit hole 215 that guides the movement of the cutting means 230.

[0102] The filter fixing member 220 is configured such that both ends connect both sides of the sheet slit hole 215, and a pressure vane 224 is formed to pressurize and fix the filter sheet 133 that has passed through the sheet slit hole 215 to the filter fixing surface 215a.

[0103] As shown in Figure 10, the pressure vane 224 is configured to be inclined toward the sheet withdrawal direction in which the filter sheet 220 is unwound and passes through the sheet slit hole 215. This configuration allows the filter sheet 220 to move in the sheet withdrawal direction, but restricts its movement in the opposite direction, i.e., toward the side of the main body 110.

[0104] The filter fixing member 220, like the filter fixing frame 210, may consist of a single unit with a fixed length, or, as shown in the drawings, may be composed of multiple filter fixing members 221 and 222, and configured in a length-adjustable form. For this purpose, multiple filter fixing members 221 and 222 may also be configured to be connected to each other by connecting means 223 at adjacent ends. These connecting means 223 may consist of connecting protrusions and connecting grooves, and on the opposing ends of the multiple filter fixing members 221 and 222, one side may have connecting protrusions and the other side may have connecting grooves, allowing them to be connected to each other. For example, the length may be shortened by directly connecting the first filter fixing members 221 on both sides, or it may be made longer by connecting the first filter fixing members 221 on both sides and the second filter fixing member 222 interposed between them in a line.

[0105] The cutting means 230 is installed on the filter fixing frame 210 and is configured for cutting the filter sheet 133. The cutting means 230 consists of a rail insertion groove 231a which is inserted into a rail portion 214 which is configured along the length of the lower end of the filter fixing frame 210, and a sliding member 231 which is configured to be movable left and right along the rail portion 214, and a cutter blade 232 which is configured at the upper end of the sliding member 231 and moves left and right together with the sliding member 231, and cuts the filter sheet 133 housed in the cutter guide portion 215 while moving along the cutter guide portion 215 while being inserted inside the cutter guide portion 215.

[0106] On the other hand, in the invention, the filter fixing portion 200 is configured to be connected to one end of the filter fixing member 220, and further comprises a blade elastic portion 240 that provides a predetermined pressing force for the pressurizing blade 224 to pressurize the filter fixing surface 215a.

[0107] Referring to Figures 8 and 9, the wing elastic section 240 is configured to include an axial connector 214 and a spiral spring 243.

[0108] The shaft connector 214 is configured to be rotatable by being inserted into a connector housing hole 216a formed through one side of the filter fixing frame 210, and has a keyhole 241a at its inner end which is axially coupled to a key shaft 221a formed at the end of the filter fixing member 220, and consists of a spiral spring 243, which is fixed so as to surround the shaft connector 241, with its outer end 243a fitted into a spring fitting groove 216b formed on the inner circumferential surface of the connector housing hole 216a, and which provides an elastic force that rotates the shaft connector 214 coupled to the filter fixing member 220 in one direction so as to pressurize the filter fixing surface 215a.

[0109] In this configuration, the elastic force of the spiral spring 243 generates a force that causes the shaft connector 214 to rotate in the connector housing groove 216a. This rotational force also occurs in the filter fixing member 220 connected to the shaft connector 214, causing the pressure vane 224 to pressurize the filter fixing surface 215a. As a result, the filter sheet 133 is pressed and fixed to the filter fixing surface 215a by the pressure vane 224.

[0110] Unexplained reference numeral 213 is a cover plate that is coupled to the side of the filter fixing frame 110 so as to cover the connector housing groove 216a, preventing the shaft connector 214 from coming out of the connector housing groove 216a.

[0111] Although the present invention has been illustrated and described above in relation to preferred embodiments illustrating the principles of the present invention, the present invention is not limited to the configuration and operation as illustrated and described therein. Those skilled in the art should understand that a variety of changes and modifications can be made to the present invention without departing from the spirit and scope of the claims. Accordingly, all appropriate changes and modifications and equivalents should also be considered to fall within the scope of the present invention. [Industrial applicability]

[0112] As described above, the present invention can be widely used in the range hood filter-related industrial field. [Explanation of Symbols]

[0113] 110 Main body 111 Hood coupling panel 111a Bonding slit 112 Connecting Panel 113 First Rotation Support Section 113a Shaft hole 114 Second Rotating Support Section 114a Exposed part of the wheel 115 Wheel housing groove 115a Wheel axle groove 115b Button relocation hole 116 Lid plate 116a Shaft insertion port 119 First coupling means 119a Clip 119b Adhesion Member 119c Locking member 120 RPM drum section 121 Drum Body 122 Connecting rod 123 Connecting Bracket 124 Rotating shaft section 125 Variable Length Module 126 Axis Guide 126a Guide hole 126b Forced fitting part 126c extension pipe section 126d Rotation regulating groove 127 Movable axis 127a Spring fixing groove 127b Key section 128 Elastic members 130 filter sheet rolls 131 Roll Shaft 133 filter sheets 140 Tension adjustment section 141 Tension Adjustment Wheel 141a Wheel axle 142 Ratchet Gear 143 Axial connection hole 145 Sliding Button 146 Elastic means 147 Clasp 200 Filter fixing part 210 Filter fixing frame section 213 Connection means 214 Rail section 215 Sheet slit holes 215a Filter mounting surface 215b Cutter guide section 216 Connector housing 216a Connector housing hole 216b Spring mounting groove 217 Second coupling means 218 Lid plate 220 Filter fixing member 224 Pressurized wing 230 Cutting means 231 Sliding member 231a Rail insertion groove 232 Cutter blades 240 Wing elastic part 241 Axis Connector 243 Spiral Spring

Claims

1. A main body consisting of a coupling panel that is detachably attached to one side of the underside of the range hood, and a first rotation support part and a second rotation support part that are installed perpendicular to both sides of the coupling panel part and are configured to face each other at a predetermined distance apart; A rotating drum section rotatably installed between the first rotating support section and the second rotating support section; A replacement filter sheet roll that can be replaced and attached to the rotating drum in a manner into which the rotating drum is inserted, and in which the filter sheet is unwound as it rotates along with the rotation of the rotating drum, covering the hood filter installed on the underside of the range hood, and filtering out oil from the air that is drawn in before the hood filter; and A filter fixing part that is detachably connected to the other side of the underside of the range hood and fixes and supports the free end of the filter sheet so as to maintain the state in which the filter sheet covers the hood filter; An auxiliary filter device for a roll screen type range hood, characterized by including the following:

2. The auxiliary filter device for a roll screen type range hood according to claim 1, further comprising a tension adjustment unit configured on one side of the main body, which rotates the rotating drum by the user's rotational operation to adjust the tension of the filter sheet.

3. The auxiliary filter device for a roll screen type range hood according to claim 1, characterized in that the main body, the rotating drum, and the filter fixing part are each configured to be adjustable in length according to the width of the filter sheet roll.

4. The main body is provided with a first coupling means that is detachably coupled to one side of the lower surface of the range hood. The auxiliary filter device for a roll screen type range hood according to claim 1, characterized in that the filter fixing portion is provided with a second coupling means that is detachably coupled to the other side of the lower surface of the range hood.

5. The aforementioned filter sheet roll is A tubular roll shaft made of polycarbonate material into which the rotating drum portion is inserted; and A filter sheet formed in a roll shape wound around the aforementioned roll shaft and configured to be unwound from the aforementioned roll shaft; The auxiliary filter device for a roll screen type range hood according to claim 1, characterized by including the following:

6. The aforementioned rotating drum section is A drum body made of metal, formed in a tubular shape, and inserted and coupled to the roll shaft; A rotating shaft portion that is coupled to one side of the drum body and installed so as to be connected to the first rotating support portion; and A variable-length shaft module is installed so as to be coupled to the other side of the drum body and connected to the second rotating support, and is configured to be of variable length so as to allow the rotating drum to be easily separated and connected; The auxiliary filter device for a roll screen type range hood according to claim 5, characterized by including the following:

7. The aforementioned filter fixing part is A filter fixing frame is attached to the lower surface of the range hood, and has a sheet slit hole through which the free end of the filter sheet passes, with a filter fixing surface configured in the sheet slit hole for fixing the filter sheet; and A filter fixing member is installed to connect both ends of the filter fixing frame and is equipped with pressure vanes that pressurize and fix the filter sheet to the filter fixing surface while the filter sheet passes through the sheet slit holes; The auxiliary filter device for a roll screen type range hood according to claim 1, characterized by including the following:

8. The auxiliary filter device for a roll screen type range hood according to claim 7, characterized in that the pressure vane is configured to be inclined toward the sheet pulling direction toward which the filter sheet is unwound and passes through the sheet slit hole, allowing the filter sheet to move in the sheet pulling direction, but restricting the movement of the filter sheet in the opposite direction to the sheet pulling direction.

9. The auxiliary filter device for a roll screen type range hood according to claim 7, characterized in that the filter fixing part is installed on the filter fixing frame and further comprises a cutting means for cutting the filter sheet.

10. The cutting means is A sliding member configured to slide along a rail formed along the length of the lower end of the filter fixing frame; and A cutter blade configured on the sliding member, which cuts the filter sheet while moving together with the sliding member; The auxiliary filter device for a roll screen type range hood according to claim 9, characterized by including the following:

11. The auxiliary filter device for a roll screen type range hood according to claim 10, characterized in that a cutter guide portion is provided in the sheet slit hole to guide the movement of the cutter blade so that the filter sheet is cut.

Images