Oil screen assembly for oil smoke suction device and range hood

Abstract

The utility model relates to an oil screen assembly for a cooking fume suction device and a range hood, the oil screen assembly comprises an oil screen main body, and air inlet holes which are sequentially distributed along the length direction of the oil screen main body are distributed on the oil screen main body; the guide vane assembly comprises a plurality of guide vanes corresponding to the air inlet holes of the oil screen main body, and each guide vane is rotationally arranged on the back surface of the oil screen main body and has an opening state for opening the corresponding air inlet hole and a closing state for closing the air inlet hole along with the change of the rotating position of the guide vane; the guide vanes are connected through a linkage mechanism and can synchronously open or close the corresponding air inlet holes; the back face of the oil screen body is further provided with a first maintaining component used for maintaining at least one guide vane in the state that the air inlet holes are closed and a second maintaining component used for maintaining at least one guide vane in the state that the air inlet holes are opened. The utility model has the advantage that the guide vane can be stably kept in an open state and a closed state.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil net device technical field especially, relates to an oil net subassembly and range hood for oil fume suction device. BACKGROUND

[0002] Range hood device, such as range hood and integrated cooker with oil fume suction function, is the kitchen appliance that is commonly used to purify kitchen environment. Such as range hood, it works by using the principle of fluid dynamics, through the centrifugal fan installed in the range hood to generate negative pressure suction, the oil fume below the range hood is filtered by the oil net installed at the air inlet and sucked into the centrifugal fan, after the fan acceleration, it is guided to discharge outdoor, thereby purifying the kitchen environment.

[0003] In order to realize the suction control of unilateral oil fume and improve the oil fume suction effect, the Chinese utility model patent with the patent number ZL202120678159.4 (the authorized announcement number is CN215570673U) "an air inlet assembly and a range hood applying the air inlet assembly" discloses an air inlet assembly, including a panel, the panel is provided with an air inlet, the first oil net is arranged at the air inlet, the first oil net has two, one end of each of the two first oil nets is close to each other, the other end of each of the two first oil nets is away from each other, the air inlet assembly further includes a second oil net, each first oil net corresponds to a second oil net, the second oil net is detachably connected with the corresponding first oil net and can move relative to the first oil net, each second oil net can be respectively in a first position and a second position, when in the first position, the second oil net cooperates with the first oil net and is in the air inlet state that makes the air inlet completely open, when in the second position, the second oil net cooperates with the first oil net and is in the state that partially opens the air inlet or closes the air inlet. The air inlet assembly of the range hood moves the movable oil net relative to the fixed oil net to make the through holes on the double-layer oil net staggered, thereby realizing the adjustment of the flow area of the left and right sides of the range hood. This oil net assembly cannot effectively guide the oil fume, and the driving mechanism for driving the movement of the movable oil net needs to have enough driving force to ensure the smooth movement of the movable oil net, and its production cost is higher.

[0004] For example, the application number CN202222809147.8 (the authorized announcement number is CN218864275U) is an oil screen assembly and a range hood, which includes a filter plate with a plurality of filter holes. The filter plate is provided with a rotatable guide vane at least partially in the filter hole, and the rotation axis of each guide vane is substantially parallel to the plate surface of the filter plate. The filter plate is provided with a linkage mechanism for driving at least partially linked guide vanes. The guide vanes can adjust the flow area of the fluid on both sides of the inlet, thereby distributing the flow on both sides of the inlet, and can also guide the flow of oil smoke. However, the deflection of the guide vanes in the patent application is driven by a motor, and in the open and closed states, it is also maintained in the corresponding state by the self-locking action of the driving motor, which is easily affected by the disturbance of oil smoke, that is, the guide vanes swing back and forth under the impact of air flow.

[0005] Therefore, the oil screen assembly of the existing oil smoke suction device needs to be further improved. Utility model content

[0006] The first technical problem to be solved by the utility model is to provide an oil screen assembly for an oil smoke suction device which can be stably maintained in an open state and a closed state in view of the status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a range hood applying the above-mentioned oil screen assembly in view of the status of the prior art.

[0008] The technical scheme adopted by the utility model to solve the first technical problem is: an oil screen assembly for an oil smoke suction device, comprising:

[0009] An oil screen main body, which is provided with air inlet holes arranged in sequence along the length direction of the oil screen main body;

[0010] A guide vane assembly, which comprises a plurality of guide vanes corresponding to the air inlet holes of the oil screen main body, each guide vane is rotatably arranged on the back surface of the oil screen main body and has an open state of opening the corresponding air inlet hole and a closed state of closing the air inlet hole with the change of the rotating position;

[0011] Each guide vane is connected by a linkage mechanism and can synchronously open or close the corresponding air inlet hole. The back surface of the oil screen main body is also provided with a first retaining member for retaining at least one guide vane in the closed air inlet hole state and a second retaining member for retaining at least one guide vane in the open air inlet hole state.

[0012] In order to enable the guide vanes to be as close as possible to the air inlet holes of the oil screen main body in the closed state, and to avoid air leakage, each guide vane has a first side edge and a second side edge opposite in the width direction, and the two ends of the first side edge of each guide vane are rotatably connected to the oil screen main body.

[0013] In order to facilitate the installation of the guide vanes, the outer peripheral edge of the oil screen main body has a folded edge folded towards the back side of the oil screen main body, and the two ends of the first side edge of each guide vane are rotatably connected to the two opposite folded edges of the oil screen main body.

[0014] In order to simplify the linkage mechanism for synchronously rotating the guide vanes, each guide vane has a first end and a second end opposite in the length direction, and two adjacent guide vanes are referred to as a first vane and a second vane, the first end or the second end of the first vane is rotatably connected to the first end or the second end of the second vane by a connecting rod, and each connecting rod constitutes the linkage mechanism.

[0015] In order to avoid interference between the guide vanes and the connecting rods during deflection, the first end or the second end of each guide vane has a clearance notch, and a connecting plate perpendicular to the main body of the guide vane is arranged at the clearance notch, the first end of the connecting rod is rotatably connected to the connecting plate of the first vane, and the second end is rotatably connected to the connecting plate of the second vane.

[0016] As an improvement, when each guide vane is in an open state corresponding to the air inlet hole, each connecting rod passes through the clearance notch of the corresponding guide vane and is perpendicular to the corresponding guide vane.

[0017] In order to simplify the installation structure of the connecting rods, the ends of the two connecting rods connected to the connecting plate of the same guide vane are located on opposite sides of the connecting plate and are connected by the same pin shaft. It is conceivable that the ends of the two connecting rods connected to the connecting plate of the same guide vane can also be rotatably connected to different positions of the connecting plate.

[0018] Generally, the first end of the first vane is rotatably connected to the first end of the second vane by a first connecting rod, each first connecting rod constitutes a first connecting rod assembly, the second end of the second vane is rotatably connected to the second end of the second vane by a second connecting rod, and each second connecting rod constitutes a second connecting rod assembly, and the first connecting rod assembly and the second connecting rod assembly constitute the linkage mechanism.

[0019] The first retaining member can be a damping member that is always in contact with the deflection of the guide vane, or can be a stop rod, a stop plate or the like structure that can block the swing of the guide vane in the closed state, preferably, in order to simplify the structure of the first retaining member and adapt to the manual operation process of the guide vane, the back surface of the oil screen body is provided with a first limiting rod extending inward and perpendicular to the oil screen body at a position corresponding to at least one guide vane, the end of the first limiting rod is provided with a first buckle, and the guide vane is provided with a first buckle hole corresponding to the first limiting rod, the first buckle hole being capable of allowing the first buckle to pass through and be pulled out, in the state that the guide vane closes the air inlet hole, the first buckle passes through the first buckle hole and is limited on the outer peripheral edge of the side of the first buckle hole away from the oil screen body, and the first limiting rod constitutes the first retaining member.

[0020] The second retaining member can be a damping member that is always in contact with the deflection of the guide vane, or can be a stop rod, a stop plate or the like structure that can block the swing of the guide vane in the closed state, preferably, in order to simplify the structure of the first retaining member and adapt to the manual operation process of the guide vane, the back surface of the oil screen body is provided with a first limiting rod extending inward and perpendicular to the oil screen body at a position corresponding to at least one guide vane, the end of the first limiting rod is provided with a first buckle, and the guide vane is provided with a first buckle hole corresponding to the first limiting rod, the first buckle hole being capable of allowing the first buckle to pass through and be pulled out, in the state that the guide vane closes the air inlet hole, the first buckle passes through the first buckle hole and is limited on the outer peripheral edge of the side of the first buckle hole away from the oil screen body, and the first limiting rod constitutes the first retaining member.

[0021] The technical scheme adopted by the utility model to solve the second technical problem is: a range hood, including the casing that sets up the air inlet and the oil screen that sets up at the air inlet, the oil screen adopts the oil screen assembly of the range hood of the utility model.

[0022] Compared with the prior art, the oil screen assembly of the utility model makes the guide vane in the open state and the closed state can be kept in a stable state, and will not be disturbed by the oil fume (i.e. the stop plate swings back and forth caused by airflow), which ensures that the guide vane can be in a stable guide state when opening, and will not shake and leak air when closing, improving the user's experience. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the range hood of the utility model embodiment;

[0024] Figure 2A three-dimensional structural schematic view of the back of the oil screen assembly of the embodiment of the present application;

[0025] Figure 3 A three-dimensional structural schematic view of the front of the oil screen assembly of the embodiment of the present application;

[0026] Figure 4 A three-dimensional structural schematic view of one of the guide vanes of the embodiment of the present application;

[0027] Figure 5 A three-dimensional structural schematic view of another guide vane of the embodiment of the present application. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] In the description and claims of the present application, terms are used to describe various example structures and elements of the present application. These terms are used only to facilitate description of the example embodiments of the present application, and are in no way intended to limit or restrict the scope of the present application. For example, the terms "front," "back," "top," "bottom," "up," "down," "side," "top," "bottom," etc., are used only to identify various example structures and elements of the present application, and are in no way intended to limit or restrict the scope of the present application. Since the embodiments disclosed in the present application can be arranged in different directions, these terms indicating directions are only for the purpose of description and should not be considered as limiting, such as "up" and "down" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0030] Figures 1-5 A preferred embodiment of an oil screen assembly for an oil smoke extractor and an oil smoke extractor of the present application is shown. The oil smoke extractor refers to a device with the function of extracting and discharging oil smoke, such as an oil smoke extractor product, or an integrated cooker product with an oil smoke extraction module. The present embodiment takes the oil smoke extractor as an example to describe the oil screen assembly for the oil smoke extractor.

[0031] The range hood comprises a casing 1 and a centrifugal fan (not shown) arranged in the casing 1, and the casing 1 generally comprises a fan frame 11 and a smoke collecting cover 12 arranged at the bottom of the fan frame 11, and the inner cavity of the fan frame 11 is communicated with the inner cavity of the smoke collecting cover 12. The front side wall of the smoke collecting cover 12 is provided with an air inlet, and external smoke can enter the smoke collecting cover 12 through the air inlet. The centrifugal fan is arranged in the fan frame 11, and the centrifugal fan generates negative pressure when operating, and external oil fume can be sucked into the smoke collecting cover 12 through the air inlet. The air inlet of the smoke collecting cover 12 is also provided with an oil screen for filtering oil fume. The bottom of the smoke collecting cover 12 is provided with an oil cup 13, which is a long strip extending left and right, and is used for receiving oil stains flowing down from the smoke collecting cover 12. The front part of the smoke collecting cover 12 is also provided with a smoke baffle (not shown) which can deflect forward and backward relative to the smoke collecting cover 12, and the smoke baffle is connected to the main body of the smoke collecting cover 12 through a hinge movement mechanism, and can specifically deflect forward to open the above-mentioned air inlet and deflect backward to block and close the above-mentioned air inlet. The hinge movement mechanism for driving the smoke baffle to deflect can adopt a conventional hinge movement mechanism in the prior art, and will not be described here.

[0032] The air inlet of the smoke collecting cover 12 of the embodiment is a long strip-shaped port extending left and right, and the oil screen assembly can be divided into two which are arranged in sequence left and right. The two oil screen assemblies are respectively arranged at the left side air inlet area and the right side air inlet area of the air inlet.

[0033] Referring to Figure 2 , the oil screen assembly comprises an oil screen main body 2 and a guide vane assembly arranged at the back of the oil screen main body 2. The oil screen main body 2 is provided with a plurality of air inlet holes 20, and each air inlet hole 20 is arranged in sequence and spaced apart along the length direction (i.e. the left-right direction in Figure 1 The guide vane assembly comprises a plurality of guide vanes 3 corresponding to each air inlet hole 20 of the oil screen main body 2, and the guide vanes 3 are long strip vanes matched with the air inlet holes 20, and the length and width dimensions of the guide vanes 3 are slightly larger than those of the air inlet holes 20, so that the guide vanes 3 can effectively block the air inlet holes 20 when closed. Each guide vane 3 is rotatably arranged at the back of the oil screen main body 2, and has an opening state of opening the corresponding air inlet hole 20 and a closing state of closing the air inlet hole 20 by changing the rotating position. Generally, the number of guide vanes 3 is consistent with the number of air inlet holes 20, and when there is a specific need for the air inlet flow or air inlet position of the oil screen, the number of guide vanes 3 can also be less than the number of air inlet holes 20.

[0034] Each guide vane 3 has a first side edge 311 and a second side edge 312 opposite to each other in the width direction of the guide vane 3, and the two end portions of the first side edge 311 of each guide vane 3 are rotatably connected to the oil screen body 2. Specifically, the outer peripheral edge of the oil screen body 2 has a flange 21 folded toward the back side of the oil screen body 2, and the first side edge 311 of the guide vane 3 has a hole formed along the length direction of the guide vane 3, and a connecting shaft 34 is arranged in the hole, and the two end portions of the connecting shaft 34 are exposed at the two ends of the guide vane 3 in the length direction and are connected to the two flanges 21 of the oil screen body 2 opposite to each other. The connecting shaft 34 is arranged adjacent to the first side edge 311 of the guide vane 3, so that the guide vane 3 can be as close as possible to the air inlet hole 20 of the oil screen body 2 in the closed state, thereby avoiding the problem of air leakage.

[0035] The guide vanes 3 of the embodiment are connected by a linkage mechanism and can be opened or closed synchronously. Specifically, each guide vane 3 has a first end portion 313 and a second end portion 314 opposite to each other in the length direction, and two adjacent guide vanes 3 are respectively referred to as a first vane 3a and a second vane 3b, and the first end portion 313 or the second end portion 314 of the first vane 3a is rotatably connected to the first end portion 313 or the second end portion 314 of the second vane 3b by a connecting rod. More specifically, the first end portion 313 of the first vane 3a is rotatably connected to the first end portion 313 of the second vane 3b by a first connecting rod 41, and each first connecting rod 41 constitutes a first connecting rod assembly, and the second end portion 314 of the second vane 3b is rotatably connected to the second end portion 314 of the second vane 3b by a second connecting rod 42, and each second connecting rod 42 constitutes a second connecting rod assembly, and the first connecting rod assembly and the second connecting rod assembly constitute the linkage mechanism of the embodiment. The two end portions of the guide vane 3 are provided with the connecting rod assembly, which can ensure the consistency of the movement of the two sides of the guide vane assembly.

[0036] The first end 313 or the second end 314 of each guide vane 3 has a clearance gap 32, and a connecting plate perpendicular to the main body of the guide vane 3 is arranged at the clearance gap 32, and the first end of the connecting rod (the first connecting rod 41 or the second connecting rod 42) is rotatably connected to the connecting plate of the first vane 3a, and the second end is rotatably connected to the connecting plate of the second vane 3b. The ends of the two connecting rods connected to the connecting plate of the same guide vane 3 are located on opposite sides of the connecting plate, respectively, and are connected by the same pin shaft. The staggered arrangement of the connecting rods makes the structure of the connecting rod assembly more compact and reduces the occupied space. The space utilization can be effectively improved, and the benefits brought by the saved space are that more guide vanes 3 can be placed in a limited space, that is, more air inlets can be provided on the oil screen main body 2, and more air inlets mean better oil fume extraction effect (in the single opening but not working state). The design of the clearance gap 32 on the guide vane 3 can avoid the interference problem between the guide vane 3 and the connecting rod during deflection. Specifically, when each guide vane 3 is in the state of opening the corresponding air inlet 20, each connecting rod passes through the clearance gap 32 of the corresponding guide vane 3 and is perpendicular to the corresponding guide vane 3.

[0037] The back of the oil screen main body 2 also has a first retaining member for retaining at least one guide vane 3 in the closed air inlet 20 state and a second retaining member for retaining at least one guide vane 3 in the open air inlet 20 state. The first retaining member can be a damping member that always contacts the guide vane 3 during deflection, or a structure such as a stop rod or a stop plate that can block the swinging of the guide vane 3 in the closed state. In this embodiment, in order to simplify the structure of the first retaining member and adapt to the manual operation process of the guide vane 3, the back of the oil screen main body 2 is provided with a first limiting rod 22 extending inward and perpendicular to the oil screen main body 2 at a position corresponding to at least one guide vane 3. The end of the first limiting rod 22 is provided with a first buckle 221. A first buckle 221 is provided on the guide vane 3 at a position corresponding to the first limiting rod 22. The outer edge of the first buckle 221 is designed as a curved surface or a circular arc structure, so that the first buckle 221 can pass through the first buckle 221 and be limited to the outer peripheral edge of the first buckle 221 away from the oil screen main body 2 during deflection and closing, and the first buckle 221 can be removed from the first buckle 331 during deflection and opening (applying a certain force). The first limiting rod 22 described above constitutes the first retaining member of this embodiment. As shown in Figure 2 The first limiting rod 22 has three, which are arranged at the middle position of the length direction of the oil screen main body 2, and the corresponding first buckles 331 are arranged on the corresponding three guide vanes 3.

[0038] Likewise, the second retaining member can be a damping member that is always in contact during deflection of the guide vanes 3, or can be a structure such as a stop bar or stop plate that can block swinging of the guide vanes 3 in the open state. In the present embodiment, preferably, the back surface of the oil screen body 2 is provided with a second limiting rod 23 that is perpendicular to the guide vanes 3 in the open state at a position corresponding to the guide vanes 3 at the most edge side, and the end of the second limiting rod 23 is provided with a second buckle 231, and the guide vanes 3 are provided with a second buckle hole 332 at a position corresponding to the second limiting rod 23. The outer edge of the second buckle 231 is designed as a curved surface or a circular arc structure, so that the second buckle 231 can pass through the second buckle hole 332 and be limited at the outer peripheral edge of the second buckle hole 332 during deflection and opening of the guide vanes 3, and the second buckle 231 can be disengaged from the second buckle hole 332 during deflection and closing (application of a certain force) of the guide vanes 3. The second limiting rod 23 described above constitutes the second retaining member of the present embodiment. As shown in Figure 2 the second limiting rod 23 has two, which are arranged at the upper and lower sides of the lengthwise end of the oil screen body 2, and the two lengthwise ends of the guide vanes 3 at the most edge side corresponding to the second limiting rod 23 are each provided with a second buckle hole 332.

[0039] The oil screen assembly of the present embodiment can keep the guide vanes 3 in a stable state in the open state and the closed state through the first retaining member and the second retaining member, and will not be disturbed by oil fumes (i.e. swinging of the stop plate caused by air flow), ensuring that the guide vanes 3 can be in a stable guide state when opened, and will not sway and leak air when closed, improving the user's experience. In addition, the oil screen assembly adds the function of single opening and single suction, and only needs to add three materials of guide vanes 3, connecting rods and connecting shafts 343 to realize simultaneous closing and opening of the guide vanes 3, and the material generalization rate is high, reducing the cost.

Claims

1. An oil screen assembly for an oil fume extractor, comprising: an oil screen body (2) having air inlet holes (20) arranged along the length of the oil screen body (2); a vane assembly comprising a plurality of guide vanes (3) corresponding to the air inlet holes (20) of the oil screen body (2), each guide vane (3) being pivotally arranged on the back of the oil screen body (2) and having an open state in which the corresponding air inlet hole (20) is open and a closed state in which the air inlet hole (20) is closed; characterized in that each of the guide vanes (3) is connected by a linkage mechanism to synchronously open or close the corresponding air inlet hole (20), the back of the oil screen body (2) further having a first retaining member for retaining at least one guide vane (3) in the closed state of the air inlet hole (20) and a second retaining member for retaining at least one guide vane (3) in the open state of the air inlet hole (20). Each of the guide vanes (3) has a first side edge (311) and a second side edge (312) opposite to each other in the width direction of the guide vane (3), and both ends of the first side edge (311) of each guide vane (3) is pivotally connected to the oil screen body (2). The outer periphery of the oil screen body (2) has a flange (21) folded towards the back of the oil screen body (2), and both ends of the first side edge (311) of each guide vane (3) is pivotally connected to the two opposite flanges (21) of the oil screen body (2). Each of the guide vanes (3) has a first end (313) and a second end (314) opposite to each other in the length direction of the guide vane (3), and two adjacent guide vanes (3) are respectively referred to as a first vane (3a) and a second vane (3b), the first end (313) or the second end (314) of the first vane (3a) is pivotally connected to the first end (313) or the second end (314) of the second vane (3b) by a connecting rod, and each of the connecting rods constitutes the linkage mechanism.

2. The oil screen assembly for an exhaust hood according to claim 1, wherein: The first end (313) or the second end (314) of each guide vane (3) has a clearance notch (32), and a connecting plate perpendicular to the main body of the guide vane (3) is arranged at the clearance notch (32), the first end of the connecting rod is pivotally connected to the connecting plate of the first vane (3a), and the second end of the connecting rod is pivotally connected to the connecting plate of the second vane (3b).

3. The oil screen assembly for a range hood as defined in claim 2 wherein: When each of the guide vanes (3) is in the open state of the corresponding air inlet hole (20), each of the connecting rods passes through the clearance notch (32) of the corresponding guide vane (3) and is perpendicular to the corresponding guide vane (3).

4. The oil screen assembly for a range hood as defined in claim 1, wherein: The ends of the two connecting rods connected to the connecting plate of the same guide vane (3) are located on opposite sides of the connecting plate and are connected by the same pin shaft.

5. The oil screen assembly for a range hood as defined in claim 4 wherein: ​ 6. The oil screen assembly for a range hood as defined in claim 5, wherein: ​ 7. The oil screen assembly for a range hood as defined in claim 5 wherein: ​ 8. The oil screen assembly for a range hood as defined in claim 4 wherein: The first end (313) of the first blade (3a) is rotatably connected with the first end (313) of the second blade (3b) through a first connecting rod (41), and the first connecting rods (41) jointly form a first connecting rod assembly; the second end (314) of the second blade (3b) is rotatably connected with the second end (314) of the second blade (3b) through a second connecting rod (42), and the second connecting rods (42) jointly form a second connecting rod assembly; and the first connecting rod assembly and the second connecting rod assembly jointly form the linkage mechanism.

9. The oil screen assembly for a range hood according to any one of claims 1-8, wherein: The back surface of the oil screen body (2) is provided with a first limiting rod (22) extending inward and perpendicular to the oil screen body (2) at a position corresponding to at least one guide vane (3), and the end of the first limiting rod (22) is provided with a first buckle (221); the guide vane (3) is provided with a first buckle hole (331) corresponding to the first limiting rod (22) and through which the first buckle (221) can pass and be released, and when the guide vane (3) is in a state of closing the air inlet hole (20), the first buckle (221) passes through the first buckle hole (331) and is limited at the outer peripheral edge of the side of the first buckle hole (331) away from the oil screen body (2), and the first limiting rod (22) forms the first retaining member.

10. The oil screen assembly for a range hood according to any one of claims 1-8, wherein: The back surface of the oil screen body (2) is provided with a second limiting rod (23) perpendicular to the guide vane (3) in an open state at a position corresponding to the guide vane (3) located at the most edge side, and the end of the second limiting rod (23) is provided with a second buckle (231); the guide vane (3) is provided with a second buckle hole (332) corresponding to the second limiting rod (23) and through which the second buckle (231) can pass and be released, and when the guide vane (3) is in a state of opening the air inlet hole (20), the second buckle (231) passes through the second buckle hole (332) and is limited at the outer peripheral edge of the second buckle hole (332), and the second limiting rod (23) forms the second retaining member.

11. A cooker hood comprising a housing (1) provided with an air inlet opening and an oil screen arranged at the air inlet opening, characterized in that: The oil screen adopts the oil screen assembly of the cooking fume extractor according to any one of claims 1-10.

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